You searched for subject:(rate control).
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1.
Fields, Travis D.
A Descent Rate Control Approach to Developing an Autonomous Descent Vehicle.
Degree: 2013, University of Nevada – Reno
URL: http://hdl.handle.net/11714/3068 
► Circular parachutes have been used for aerial payload/personnel deliveries for over 100 years. In the past two decades, significant work has been done to improve…
(more)
▼ Circular parachutes have been used for aerial payload/personnel deliveries for over 100 years. In the past two decades, significant work has been done to improve the landing accuracies of cargo deliveries for humanitarian and military applications. This dissertation discusses the approach developed in which a circular parachute is used in conjunction with an electro-mechanical reefing system to manipulate the landing location. Rather than attempt to steer the autonomous descent vehicle directly,
control of the landing location is accomplished by modifying the amount of time spent in a particular wind layer. Descent
rate control is performed by reversibly reefing the parachute canopy.The first stage of the research investigated the use of a single actuation during descent (with periodic updates), in conjunction with a curvilinear target. Simulation results using real-world wind data are presented, illustrating the utility of the methodology developed. Additionally, hardware development and flight-testing of the single actuation autonomous descent vehicle are presented.The next phase of the research focuses on expanding the single actuation descent
rate control methodology to incorporate a multi-actuation path-planning system. By modifying the parachute size throughout the descent, the controllability of the system greatly increases. The trajectory planning methodology developed provides a robust approach to accurately manipulate the landing location of the vehicle. The primary benefits of this system are the inherent robustness to release location errors and the ability to overcome vehicle uncertainties (mass, parachute size, etc.).A separate application of the path-planning methodology is also presented. An in-flight path-prediction system was developed for use in high-altitude ballooning by utilizing the path-planning methodology developed for descent vehicles. The developed onboard system improves landing location predictions in-flight using collected flight information during the ascent and descent. Simulation and real-world flight tests (using the developed low-cost hardware) demonstrate the significance of the improvements achievable when flying the developed system.
Advisors/Committee Members: Wang, Eric L. (advisor), LaCombe, Jeffrey C. (committee member), Geiger, Emil J. (committee member), Slegers, Nathan J. (committee member), Fu, Henry (committee member).
Subjects/Keywords: Descent Rate Control; Parachute; Path Planning
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APA (6th Edition):
Fields, T. D. (2013). A Descent Rate Control Approach to Developing an Autonomous Descent Vehicle. (Thesis). University of Nevada – Reno. Retrieved from http://hdl.handle.net/11714/3068
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fields, Travis D. “A Descent Rate Control Approach to Developing an Autonomous Descent Vehicle.” 2013. Thesis, University of Nevada – Reno. Accessed March 08, 2021.
http://hdl.handle.net/11714/3068.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fields, Travis D. “A Descent Rate Control Approach to Developing an Autonomous Descent Vehicle.” 2013. Web. 08 Mar 2021.
Vancouver:
Fields TD. A Descent Rate Control Approach to Developing an Autonomous Descent Vehicle. [Internet] [Thesis]. University of Nevada – Reno; 2013. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11714/3068.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fields TD. A Descent Rate Control Approach to Developing an Autonomous Descent Vehicle. [Thesis]. University of Nevada – Reno; 2013. Available from: http://hdl.handle.net/11714/3068
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Otago
2.
Hasan, Syed Faisal.
Protocol Support for Adaptive Streaming Media
.
Degree: 2011, University of Otago
URL: http://hdl.handle.net/10523/619
► The Internet has already become a platform for multimedia rich communication, collaboration and entertaining applications. A majority of these applications are based on a technology…
(more)
▼ The Internet has already become a platform for multimedia rich communication, collaboration and entertaining applications. A majority of these applications are based on a technology known as audio-video streaming. Streaming conceals the effect of inherent file transmission delay by starting playback before the file transmission is complete. However, the user experience of streaming is not always satisfactory. This is because of the fact that good quality streaming requires adequate and steady end-to-end bandwidth which is often unavailable in many parts of the Internet. Adaptation is one of the means by which streaming applications try to overcome the inherent limitations of the Internet. Not only the Internet lacks mechanisms for minimum bandwidth, delay and loss guarantees, but also the available transport protocols on the Internet provides little support to adaptive streaming applications. In this dissertation, the effect of the available transport protocols on the performance of adaptive streaming media has been illustrated and mechanisms has been proposed to address these limitations. A new framework called the Dynamic Buffer Active Tuning (DBAT) has been proposed to support the adaptability of streaming applications by providing fine grained feedback, preferential packet drop, smooth
rate control and automatic buffer tuning. This dissertation also introduces another framework named Clear Water Streaming (CWS) to support Variable Bit
Rate (VBR) streaming flows. CWS incorporates router mechanisms to overcome the barrier of the conservative nature of TCP's congestion
control, a major obstacle for VBR streaming. Finally, this dissertation proposes New Slow Start (NSS) which is a modification to slow start for providing an improved start up phase by reducing packet losses and buffering delay.
Advisors/Committee Members: Huang, Zhiyi (advisor).
Subjects/Keywords: Adaptive Streaming;
Rate Control;
Congestion Control;
New slow start
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APA (6th Edition):
Hasan, S. F. (2011). Protocol Support for Adaptive Streaming Media
. (Doctoral Dissertation). University of Otago. Retrieved from http://hdl.handle.net/10523/619
Chicago Manual of Style (16th Edition):
Hasan, Syed Faisal. “Protocol Support for Adaptive Streaming Media
.” 2011. Doctoral Dissertation, University of Otago. Accessed March 08, 2021.
http://hdl.handle.net/10523/619.
MLA Handbook (7th Edition):
Hasan, Syed Faisal. “Protocol Support for Adaptive Streaming Media
.” 2011. Web. 08 Mar 2021.
Vancouver:
Hasan SF. Protocol Support for Adaptive Streaming Media
. [Internet] [Doctoral dissertation]. University of Otago; 2011. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10523/619.
Council of Science Editors:
Hasan SF. Protocol Support for Adaptive Streaming Media
. [Doctoral Dissertation]. University of Otago; 2011. Available from: http://hdl.handle.net/10523/619
NSYSU
3.
Lin, Yi-tsung.
A study on adaptive cutting for scrolls.
Degree: Master, Mechanical and Electro-Mechanical Engineering, 2016, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101116-160818
► The scroll, which is used to compress the air, was invented by Léon Creux in 1905. When it was commercialized and generally used on sized…
(more)
▼ The scroll, which is used to compress the air, was invented by Léon Creux in 1905. When it was commercialized and generally used on sized refrigeration and air-conditioning systems in 1980s, the market demand increase to millions per year. The key components include fixed scroll and orbiting scroll, with the requirements of high precision and rapid material removal. Furthermore, industrial circles used to take âtry and errorâ to choose the machining parameters more commonly. It causes less effective and higher cost.
In order to meet market demand and overcome the requirements listed above. This paper takes fixed scroll as a model, and applies different adaptive manufacturing separately conformed with rough manufacturing and final manufacturing. Adaptive manufacturing gives back the feedback through the sensor measuring and simulated computing results, changing the machining parameters immediately, in order to save time and cost.
That is, in rough manufacturing, the purpose is to increase Material Removal
Rate (MRR). By simulating the cutting area and setting fixed chip load, the feed
rate should be increased, machining time should be shortened, and the loading should be stabilized. Next, in semi and final manufacturing, the focus is on the reduction of chatter. The chatter frequency will be detected via microphone with the connection between a self-developed software and controller, which could change spindle speed automatically for enhancing machining precision and longer endurance of tool.
Advisors/Committee Members: Jao-Hwa Kuang (chair), Der-Min Tsay (committee member), Bor-Jeng Lin (chair), Hsin-Pao Chen (chair), Guan-Syong Huang (chair).
Subjects/Keywords: Scroll manufacturing; Adaptive cutting; Adaptive feed rate changing; Fixed material removal rate; Chatter control
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APA ·
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Manager
APA (6th Edition):
Lin, Y. (2016). A study on adaptive cutting for scrolls. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101116-160818
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lin, Yi-tsung. “A study on adaptive cutting for scrolls.” 2016. Thesis, NSYSU. Accessed March 08, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101116-160818.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lin, Yi-tsung. “A study on adaptive cutting for scrolls.” 2016. Web. 08 Mar 2021.
Vancouver:
Lin Y. A study on adaptive cutting for scrolls. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Mar 08].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101116-160818.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lin Y. A study on adaptive cutting for scrolls. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0101116-160818
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Clemson University
4.
Gaad, Swadeel Deepak.
Intermittent Estimation of Volumetric Mass Transfer Coefficient Using Offgas Sensor Data for Continuous OUR Estimation for CHO Cell Culture.
Degree: MS, Electrical and Computer Engineering (Holcomb Dept. of), 2018, Clemson University
URL: https://tigerprints.clemson.edu/all_theses/2984
► For the last several years drugs based on monoclonal antibodies have been manufactured using Chinese Hamster Ovaries (CHO) cells by the bio-pharmaceutical industries to treat…
(more)
▼ For the last several years drugs based on monoclonal antibodies have been manufactured using Chinese Hamster Ovaries (CHO) cells by the bio-pharmaceutical industries to treat cancer and other autoimmune diseases. Several
control strategies are used to increase the productivity and efficiency in bio-pharmaceutical manufacturing. Cell growth can be controlled by adjusting the feed
rate based on oxygen uptake
rate of the cells in the bioreactor. Determining the volumetric mass transfer coefficient and oxygen saturation concentration is vital in correctly estimating oxygen uptake
rate. Thus, a robust and efficient method to determine volumetric mass transfer coefficient and oxygen saturation concentration, which uses common industrial sensors, is desired.
In this thesis, a new method to determine volumetric mass transfer coefficient is proposed and implemented on simulated and laboratory experiments. Using this method, volumetric mass transfer coefficient can be calculated independently of oxygen saturation concentration. The fitting parameters required to estimate volumetric mass transfer coefficients are estimated using only the estimated oxygen mole ratio of input gas, the measured oxygen mole ratio of the off-gas and the dissolved oxygen concentration in the bioreactor. A modified version of Savitzky-Golay filtering is used to determine the change in oxygen concentration in the bioreactor liquid. Another algorithm is used to reduce the variations between estimated OUR (<i> OUR </i>) and <i>OUR
linfit</i> signal to estimate the oxygen saturation concentration in the liquid. Finally, both these signals are used to estimate final OUR signal.
The performance of these algorithms were validated by simulated experiments and lab experiments. A Simulink model was used to simulate bioreactor experiments and the values obtained after implementing the algorithm on simulated experiment data were compared with known values from the Simulink model to verify algorithm accuracy. High accuracy was obtained in all the simulated experiments even in presence of noise. The variation and noise in estimated OUR was significantly reduced when these algorithms were employed. The algorithm could also be used in cases when there were sudden gas mix changes by estimating OUR using parameters estimated just prior to the gas mix change. The algorithm was applied to laboratory experiments and it showed consistent results over short periods of time. Since the oxygen saturation concentration is important information required to estimate OUR and
control the growth
rate of cells, these algorithms have the potential of proving useful in implementing robust controller to increase the productivity and efficiency of the monoclonal antibody manufacturing process using CHO cells.
Advisors/Committee Members: Dr. Richard Groff, Committee Chair, Dr. Sarah Harcum, Dr. Rod Harrell.
Subjects/Keywords: CHO cells; Control systems; KLA; Oxygen Saturation Concentration; Oxygen transfer rate; Oxygen uptake rate
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APA ·
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Manager
APA (6th Edition):
Gaad, S. D. (2018). Intermittent Estimation of Volumetric Mass Transfer Coefficient Using Offgas Sensor Data for Continuous OUR Estimation for CHO Cell Culture. (Masters Thesis). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_theses/2984
Chicago Manual of Style (16th Edition):
Gaad, Swadeel Deepak. “Intermittent Estimation of Volumetric Mass Transfer Coefficient Using Offgas Sensor Data for Continuous OUR Estimation for CHO Cell Culture.” 2018. Masters Thesis, Clemson University. Accessed March 08, 2021.
https://tigerprints.clemson.edu/all_theses/2984.
MLA Handbook (7th Edition):
Gaad, Swadeel Deepak. “Intermittent Estimation of Volumetric Mass Transfer Coefficient Using Offgas Sensor Data for Continuous OUR Estimation for CHO Cell Culture.” 2018. Web. 08 Mar 2021.
Vancouver:
Gaad SD. Intermittent Estimation of Volumetric Mass Transfer Coefficient Using Offgas Sensor Data for Continuous OUR Estimation for CHO Cell Culture. [Internet] [Masters thesis]. Clemson University; 2018. [cited 2021 Mar 08].
Available from: https://tigerprints.clemson.edu/all_theses/2984.
Council of Science Editors:
Gaad SD. Intermittent Estimation of Volumetric Mass Transfer Coefficient Using Offgas Sensor Data for Continuous OUR Estimation for CHO Cell Culture. [Masters Thesis]. Clemson University; 2018. Available from: https://tigerprints.clemson.edu/all_theses/2984
Anna University
5.
Anand B.
Load frequency control of interconnected thermal and
hydro thermal system with fuzzy logic controller;.
Degree: Load Frequency Controll, 2013, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/10248
► Load Frequency Control (LFC) is an important issue in power system control. Frequency consistency is needed to operate all electrical apparatus in good condition. The…
(more)
▼ Load Frequency Control (LFC) is an important issue
in power system control. Frequency consistency is needed to operate
all electrical apparatus in good condition. The aim of this
research work is to design a suitable fuzzy logic based load
frequency controller for two area interconnected thermal and
hydro-thermal power system including nonlinearities such as,
Governor Dead Band (GDB), Generation Rate Constraint (GRC) and
Boiler Dynamics (BD), to suppress the frequency oscillation when
there is a change in load because connected loads are not seldom
constant. This thesis presents a model of two area interconnected
thermal and hydro-thermal system with non-linearities and boiler
dynamics. Additionally, when the number of interconnection
increases and the system is simulated by external disturbance, the
control of various time domain specifications within the stipulated
time are quite difficult. Area Control Error (ACE) and change in
Area Control Error (ACE) are taken as its input. This ACE
determines the amount of frequency deviation plus tie-line power
deviation in any area. If the ACE parameter response settles down
faster with FLC than the conventional controller, then it is said
that the proposed controller has more significance and good control
performance than existing one. This validation is incorporated in
this thesis. There is no established technique available at resent
to control the frequency oscillation for multi area LFC with
non-linearities and boiler dynamics on both the areas. Those
controllers are identified and incorporated in this thesis.
Simulation results conclude that the proposed controller has better
control performance than conventional PI controller in the presence
of GDB, GRC and BD in both the areas, for interconnected thermal
and hydro-thermal system separately. The validity of these new
techniques is confirmed to its repeatability and is in good
agreement with the results published in the literature.
newline
Appendix 1; pp. 76-78
Advisors/Committee Members: Ebenezer Jeyakumar, A..
Subjects/Keywords: Load frequency control; Governor Dead Band; Generation
Rate Constraint; Boiler Dynamics; Area Control Error.
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Manager
APA (6th Edition):
B, A. (2013). Load frequency control of interconnected thermal and
hydro thermal system with fuzzy logic controller;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/10248
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
B, Anand. “Load frequency control of interconnected thermal and
hydro thermal system with fuzzy logic controller;.” 2013. Thesis, Anna University. Accessed March 08, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/10248.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
B, Anand. “Load frequency control of interconnected thermal and
hydro thermal system with fuzzy logic controller;.” 2013. Web. 08 Mar 2021.
Vancouver:
B A. Load frequency control of interconnected thermal and
hydro thermal system with fuzzy logic controller;. [Internet] [Thesis]. Anna University; 2013. [cited 2021 Mar 08].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10248.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
B A. Load frequency control of interconnected thermal and
hydro thermal system with fuzzy logic controller;. [Thesis]. Anna University; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/10248
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
NSYSU
6.
Chang, Chia-Chi.
Dynamic Rate Control Mechanism for Real-time Video Multicasting on Mobile Communication Networks.
Degree: Master, Electrical Engineering, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730114-114813
► Multicast is an effective scheme to save network bandwidth when real-time multimedia streams are transmitted over a mobile communication network. Current researches lack of a…
(more)
▼ Multicast is an effective scheme to save network bandwidth when real-time multimedia streams are transmitted over a mobile communication network. Current researches lack of a comprehensive
rate control mechanism for a mobile environment, where signal interference and network congestion occur very easily. It is well known that packet loss due to signal interference, network congestion, or even user mobility, may bring about a critical deterioration in video quality. In this thesis, we propose a dynamic
rate control mechanism (DRCM), with which severe packet loss due to interference or congestion in a mobile network can be reduced. In DRCM, a mobile station (MS) can distinguish between interference and congestion via measured block error
rate (BLER) and congestion loss
rate (CLR). To effectively decrease packet loss
rate (PLR), a base station (BS) can adjust its sending
rate by measuring round trip time (RTT) and the returned BLER from MS. Two mathematical equations are derived to reduce PLR when interference and congestion occurs individually. Furthermore, we combine the equations together for deriving a minimum data
rate when interference and congestion occur simultaneously. To evaluate the performance of the proposed DRCM, we perform NS-3 simulation. In the simulation, we discuss the impact of interference, user mobility, and buffer size on PLR while an adequate sending
rate is determined. Simulation results have shown that the proposed DRCM can decrease PLR significantly in a mobile communication network.
Advisors/Committee Members: Zi-Tsan Chou (chair), Chungnan Lee (chair), Tsang-Ling Sheu (committee member), Tsung-Chuan Huang (chair).
Subjects/Keywords: Multicast; Real-time Video; NS-3; Mobile Communication Networks; Rate Control
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APA (6th Edition):
Chang, C. (2014). Dynamic Rate Control Mechanism for Real-time Video Multicasting on Mobile Communication Networks. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730114-114813
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Chang, Chia-Chi. “Dynamic Rate Control Mechanism for Real-time Video Multicasting on Mobile Communication Networks.” 2014. Thesis, NSYSU. Accessed March 08, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730114-114813.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chang, Chia-Chi. “Dynamic Rate Control Mechanism for Real-time Video Multicasting on Mobile Communication Networks.” 2014. Web. 08 Mar 2021.
Vancouver:
Chang C. Dynamic Rate Control Mechanism for Real-time Video Multicasting on Mobile Communication Networks. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Mar 08].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730114-114813.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chang C. Dynamic Rate Control Mechanism for Real-time Video Multicasting on Mobile Communication Networks. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730114-114813
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Pretoria
7.
[No author].
The effect of intensive physical training on cardiac
autonomic variability - factors that may influence the
results
.
Degree: 2012, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-04262012-091507/
► The study dealt with the influence of exercise on the autonomic nervous system (ANS) and with factors that may influence the results. ANS function was…
(more)
▼ The study dealt with the influence of exercise on
the autonomic nervous system (ANS) and with factors that may
influence the results. ANS function was measured in 183 young,
healthy participants, before and after a twelve week standardised,
medium-to-high volume physical training programme, in a controlled
environment. The effects of the training programme were assessed on
resting ANS functioning, during standing and on the response to an
orthostatic challenge. ANS function was assessed by means of heart
rate variability (HRV) determination. HRV was quantified by three
different analytical techniques, i.e., time domain analysis (RR,
STDRR, RMSSD and pNN50), frequency domain analysis (LF,LFnu, HF,
HFnu and LF/HF) and Poincaré plot analysis (SD1 and SD2). The
influence of technical variations, such as variations in tachogram
length and period of recording, as well as the influence of
pre-intervention values of physiological variables, such as blood
pressure, BMI, VO2 max and ANS functioning, on the response to the
exercise intervention, were assessed. Results on the exercise
intervention showed: Increased supine, as well
as standing, parasympathetic cardiac
control as indicated by time
domain, frequency domain and Poincaré analyses.
Decreased sympathetic
control in the supine
position and increased sympathetic
control during rising and
standing. Increased vagal withdrawal, as well
as increased sympathetic
control during the first phase of the
orthostatic response to rising from the supine position.
Only an exercise-induced increase in
sympathetic
control when the orthostatic response was measured as
the difference between standing and supine.
Results on exercise-induced changes in sympathetic and
parasympathetic ANS
control differ, depending on posture. It is
suggested that the effects of an exercise intervention on
sympathetic and parasympathetic ANS
control of the heart should be
assessed from measurements in the supine, in the standing, and in
response to an orthostatic stressor. It is further suggested that
information obtained during rising will give additional information
on the response of the ANS. This study showed that technical as
well as physiological variations may lead to differences in the
outcome of HRV studies. Results from the technique evaluation
showed that the length and period of tachogram recordings should be
standardised, especially during an orthostatic challenge. Starting
the recording too late will miss out on the initial response to a
change in body position. Longer recording times will represent the
mean of HRV values obtained during the orthostatic response and
that obtained after stabilisation in the standing position.
Investigations into the influence of pre-intervention physiological
status on exercise-induced changes showed:
Baseline ANS functioning is a significant contributor to variations
in the ANS response to an exercise intervention.
Pre-intervention values for physiological
variables, such as blood pressure, BMI…
Advisors/Committee Members: Prof M Viljoen (advisor).
Subjects/Keywords: Autonomic nervous system;
Exercise effects;
Cardiac control;
Heart rate variability;
UCTD
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
author], [. (2012). The effect of intensive physical training on cardiac
autonomic variability - factors that may influence the
results
. (Doctoral Dissertation). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-04262012-091507/
Chicago Manual of Style (16th Edition):
author], [No. “The effect of intensive physical training on cardiac
autonomic variability - factors that may influence the
results
.” 2012. Doctoral Dissertation, University of Pretoria. Accessed March 08, 2021.
http://upetd.up.ac.za/thesis/available/etd-04262012-091507/.
MLA Handbook (7th Edition):
author], [No. “The effect of intensive physical training on cardiac
autonomic variability - factors that may influence the
results
.” 2012. Web. 08 Mar 2021.
Vancouver:
author] [. The effect of intensive physical training on cardiac
autonomic variability - factors that may influence the
results
. [Internet] [Doctoral dissertation]. University of Pretoria; 2012. [cited 2021 Mar 08].
Available from: http://upetd.up.ac.za/thesis/available/etd-04262012-091507/.
Council of Science Editors:
author] [. The effect of intensive physical training on cardiac
autonomic variability - factors that may influence the
results
. [Doctoral Dissertation]. University of Pretoria; 2012. Available from: http://upetd.up.ac.za/thesis/available/etd-04262012-091507/
University of California – Berkeley
8.
Zhang, Fu.
Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs).
Degree: Mechanical Engineering, 2015, University of California – Berkeley
URL: http://www.escholarship.org/uc/item/42c4x70m
► This dissertation investigates the design of control algorithms and calibration methods forMicroscale Rate Integrating Gyroscopes (MRIGs). As its name implies, a MRIG operatesin rate integrating…
(more)
▼ This dissertation investigates the design of control algorithms and calibration methods forMicroscale Rate Integrating Gyroscopes (MRIGs). As its name implies, a MRIG operatesin rate integrating mode and can directly measure the rotation angle of the base where itis mounted. However, the MRIG mechanical system does not spontaneously operate in arate integrating mode, but requires an active controller. Such a controller enables the MRIG to oscillate in a specific pattern that is related to the input rotation angle in a measurable way.Conventional micro-machined gyroscopes (i.e. MEMS gyroscopes) operate in rate mode (as apposed to rate integrating mode). That is, the gyroscope directly measures the rotation rate of the base. The measured rotation rate is then numerically integrated over time to obtain the input rotation angle. The main drawback of this measuring mechanism is that, by integrating, the rate measurement error will propagate over time, causing the angle measurement to drift from the real input angle. MRIG, by its operating principle, can directly measure the input rotation angle; hence it suffers from no such error propagation.A well-known control scheme for rate integrating gyroscopes was proposed by Lynch in 1995 [51]. This control scheme has demonstrated its efficacy on precisely fabricated rate integrating gyroscopes such as Hemispherical Resonance Gyroscopes (HRGs). However, for MRIGs fabricated by micro-fabrication technology, fabrication imperfections significantly degrade the gyro performance. In addition, the Lynch-proposed-scheme is essentially nonlinear. As a consequence, the controller performance is hard to predict and analyze prior to real tests.In this dissertation, a novel demodulation method is developed to transform the original nonlinear control problem into a linear time invariant controller design problem. This technique is based on the averaging method proposed by Lynch [50] but enables the use of well studied linear system theory for MRIG controller design and analysis. The resulting controller design for MRIGs is much more tractable and the performance is rather predictable. This fundamental improvement also opens up new opportunities for implementing and analyzing control systems based on linear control theory.Two schemes are proposed in this dissertation to compensate for the parameter mismatches caused by fabrication imperfections. The first one is based on electrostatic spring softening and tuning. The basic operation principle is first introduced. Then a full derivation of this method on a real MRIG configuration is conducted. Experimental results confirm that this compensation scheme can significantly attenuate the parameter mismatch.The other compensation scheme considered in this dissertation is an adaptive compensation scheme consisting of three feedforward controllers. Each of them runs on top of the corresponding feedback control loop and estimates and compensates parameter mismatches in real time. We also present a stability and convergence analysis that shows such…
Subjects/Keywords: Mechanical engineering; Calibration; Control; Microscale; Rate Integrating Gyroscopes
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APA (6th Edition):
Zhang, F. (2015). Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs). (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/42c4x70m
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zhang, Fu. “Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs).” 2015. Thesis, University of California – Berkeley. Accessed March 08, 2021.
http://www.escholarship.org/uc/item/42c4x70m.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhang, Fu. “Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs).” 2015. Web. 08 Mar 2021.
Vancouver:
Zhang F. Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs). [Internet] [Thesis]. University of California – Berkeley; 2015. [cited 2021 Mar 08].
Available from: http://www.escholarship.org/uc/item/42c4x70m.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhang F. Control and Self-Calibration of Microscale Rate Integrating Gyroscopes (MRIGs). [Thesis]. University of California – Berkeley; 2015. Available from: http://www.escholarship.org/uc/item/42c4x70m
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
9.
Muniz, Adriano Albert Lima de Area Leao.
Studies on Techniques for Improving End-to-End TCP Performance over PLC withWired and Wireless Networks : 有線/無線ネットワークと電力線搬送通信環境におけるエンド―エンド間のTCP通信性能の向上技術に関する研究.
Degree: 博士（情報工学）, 2017, Kyushu Institute of Technology / 九州工業大学
URL: http://hdl.handle.net/10228/5453
► 九州工業大学博士学位論文 学位記番号:情工博甲第300号 学位授与年月日:平成27年3月25日
1 Introduction|2 IEEE 1901 (PLC) and IEEE 802.11 (Wireless LAN) Technologies|3 TCP: Transmission Control Protocol|4 Network-Supported TCP Rate Control for the Coexistence…
(more)
▼ 九州工業大学博士学位論文 学位記番号:情工博甲第300号 学位授与年月日:平成27年3月25日
1 Introduction|2 IEEE 1901 (PLC) and IEEE 802.11 (Wireless LAN) Technologies|3 TCP: Transmission Control Protocol|4 Network-Supported TCP Rate Control for the Coexistence of Multiple and Different Types of Flows on IP over PLC|5 Cooperative Transmission Scheme Between PLC andWLANto Improve TCP Performance|6 Concluding Remarks
平成26年度
Advisors/Committee Members: 川原, 憲治.
Subjects/Keywords: PLC; TCP Rate Control; Unfairness Problem; WLAN; Co Operative Scheme; Robustness
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APA (6th Edition):
Muniz, A. A. L. d. A. L. (2017). Studies on Techniques for Improving End-to-End TCP Performance over PLC withWired and Wireless Networks : 有線/無線ネットワークと電力線搬送通信環境におけるエンド―エンド間のTCP通信性能の向上技術に関する研究. (Thesis). Kyushu Institute of Technology / 九州工業大学. Retrieved from http://hdl.handle.net/10228/5453
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Muniz, Adriano Albert Lima de Area Leao. “Studies on Techniques for Improving End-to-End TCP Performance over PLC withWired and Wireless Networks : 有線/無線ネットワークと電力線搬送通信環境におけるエンド―エンド間のTCP通信性能の向上技術に関する研究.” 2017. Thesis, Kyushu Institute of Technology / 九州工業大学. Accessed March 08, 2021.
http://hdl.handle.net/10228/5453.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Muniz, Adriano Albert Lima de Area Leao. “Studies on Techniques for Improving End-to-End TCP Performance over PLC withWired and Wireless Networks : 有線/無線ネットワークと電力線搬送通信環境におけるエンド―エンド間のTCP通信性能の向上技術に関する研究.” 2017. Web. 08 Mar 2021.
Vancouver:
Muniz AALdAL. Studies on Techniques for Improving End-to-End TCP Performance over PLC withWired and Wireless Networks : 有線/無線ネットワークと電力線搬送通信環境におけるエンド―エンド間のTCP通信性能の向上技術に関する研究. [Internet] [Thesis]. Kyushu Institute of Technology / 九州工業大学; 2017. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10228/5453.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Muniz AALdAL. Studies on Techniques for Improving End-to-End TCP Performance over PLC withWired and Wireless Networks : 有線/無線ネットワークと電力線搬送通信環境におけるエンド―エンド間のTCP通信性能の向上技術に関する研究. [Thesis]. Kyushu Institute of Technology / 九州工業大学; 2017. Available from: http://hdl.handle.net/10228/5453
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Tulane University
10.
Gossmann, Alexej.
Regaining control of false findings in feature selection, classification, and prediction on neuroimaging and genomics data.
Degree: 2018, Tulane University
URL: https://digitallibrary.tulane.edu/islandora/object/tulane:80099
► The technological advances of past decades have led to the accumulation of large amounts of genomic and neuroimaging data, enabling novel strategies in precision medicine.…
(more)
▼ The technological advances of past decades have led to the accumulation of large amounts of genomic and neuroimaging data, enabling novel strategies in precision medicine. These largely rely on machine learning algorithms and modern statistical methods for big biological datasets, which are data-driven rather than hypothesis-driven. These methods often lack guarantees on the validity of the research findings. Because it can be a matter of life and death, when computational methods are deployed in clinical practice in medicine, establishing guarantees on the validity of the results is essential for the advancement of precision medicine. This thesis proposes several novel sparse regression and sparse canonical correlation analysis techniques, which by design include guarantees on the false discovery rate in variable selection. Variable selection on biomedical data is essential for many areas of healthcare, including precision medicine, population stratification, drug development, and predictive modeling of disease phenotypes. Predictive machine learning models can directly affect the patient when used to aid diagnosis, and therefore they need to be thoroughly evaluated before deployment. We present a novel approach to validly reuse the test data for performance evaluation of predictive models. The proposed methods are validated in the application on large genomic and neuroimaging datasets, where they confirm results from previous studies and also lead to new biological insights. In addition, this work puts a focus on making the proposed methods widely available to the scientific community though the release of free and open-source scientific software.
1
Alexej Gossmann
Advisors/Committee Members: Wang, Yu-Ping (Thesis advisor), School of Science & Engineering Biomedical Engineering (Degree granting institution).
Subjects/Keywords: Sparse models; False discovery rate control; Data reuse
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APA (6th Edition):
Gossmann, A. (2018). Regaining control of false findings in feature selection, classification, and prediction on neuroimaging and genomics data. (Thesis). Tulane University. Retrieved from https://digitallibrary.tulane.edu/islandora/object/tulane:80099
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gossmann, Alexej. “Regaining control of false findings in feature selection, classification, and prediction on neuroimaging and genomics data.” 2018. Thesis, Tulane University. Accessed March 08, 2021.
https://digitallibrary.tulane.edu/islandora/object/tulane:80099.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gossmann, Alexej. “Regaining control of false findings in feature selection, classification, and prediction on neuroimaging and genomics data.” 2018. Web. 08 Mar 2021.
Vancouver:
Gossmann A. Regaining control of false findings in feature selection, classification, and prediction on neuroimaging and genomics data. [Internet] [Thesis]. Tulane University; 2018. [cited 2021 Mar 08].
Available from: https://digitallibrary.tulane.edu/islandora/object/tulane:80099.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gossmann A. Regaining control of false findings in feature selection, classification, and prediction on neuroimaging and genomics data. [Thesis]. Tulane University; 2018. Available from: https://digitallibrary.tulane.edu/islandora/object/tulane:80099
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Cornell University
11.
Kumar, Ravi.
Dynamic Resource Management For Systems With Controllable Service Capacity.
Degree: PhD, Operations Research, 2015, Cornell University
URL: http://hdl.handle.net/1813/41011
► The rise in the Internet traffic volumes has led to a growing interest in reducing energy costs of IT infrastructure. Resource management policies for such…
(more)
▼ The rise in the Internet traffic volumes has led to a growing interest in reducing energy costs of IT infrastructure. Resource management policies for such systems, known as power aware policies, are becoming increasingly important. We propose a dynamic capacity management framework for such systems to save energy costs without sacrificing quality of service. The system incurs two types of costs; a holding cost which reflects the Quality of Service (QoS) experienced by the users, and a cost of effort (Utilization/Energy cost) based on the amount of resources being used. The key challenge for the service provider is balancing these two objectives, as using more resources improves the system performance but also leads to higher utilization costs. This tension between delivering good performance and reducing energy costs is the central feature of the models considered in this work. In order to make good capacity allocation decisions for such scenarios, we formulate two queueing
control problems using the Markov Decision Process framework. We first consider the problem of service
rate control of a single-server queueing system with a finite-state Markov-modulated Poisson arrival process. We show that the optimal service
rate is non-decreasing in the number of jobs in the system; higher congestion levels warrant higher service rates. On the contrary, however, we show that the optimal service
rate is not necessarily monotone in the current arrival
rate. If the modulating process satisfies a stochastic mono- tonicity property, the monotonicity is recovered. We examine several heuristics and show where heuristics are reasonable substitutes for the optimal
control. In the next model we consider the problem of dynamic resource allocation in the presence of different job classes. In this case, the service provider has to make two decisions; how many resources to utilize and how to allocate these resources among various job classes. These decisions, made dynamically based on the congestion levels of job classes, minimize a weighted sum of utilization and QoS related costs. We show that a priority policy is optimal for scheduling the jobs of different classes. We further show that the optimal resource utilization levels are non-decreasing in the number of jobs of each type. We extend this model to the case when server reallocations incur a switching penalty. In this case, we show that the optimal policy is hard to characterize and computing the optimal solution using the Dynamic Programming framework becomes intractable. Instead, we develop several heuristics and perform numerical studies to compare their performance.
Advisors/Committee Members: Lewis,Mark E. (chair), Henderson,Shane G. (committee member), Topaloglu,Huseyin (committee member).
Subjects/Keywords: Markov Decision Process; Service Rate Control; Dynamic Power Management
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APA (6th Edition):
Kumar, R. (2015). Dynamic Resource Management For Systems With Controllable Service Capacity. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/41011
Chicago Manual of Style (16th Edition):
Kumar, Ravi. “Dynamic Resource Management For Systems With Controllable Service Capacity.” 2015. Doctoral Dissertation, Cornell University. Accessed March 08, 2021.
http://hdl.handle.net/1813/41011.
MLA Handbook (7th Edition):
Kumar, Ravi. “Dynamic Resource Management For Systems With Controllable Service Capacity.” 2015. Web. 08 Mar 2021.
Vancouver:
Kumar R. Dynamic Resource Management For Systems With Controllable Service Capacity. [Internet] [Doctoral dissertation]. Cornell University; 2015. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1813/41011.
Council of Science Editors:
Kumar R. Dynamic Resource Management For Systems With Controllable Service Capacity. [Doctoral Dissertation]. Cornell University; 2015. Available from: http://hdl.handle.net/1813/41011
12.
Kalaiarasan C.
A new approach for receiver driven Layered multicast
congestion Control with improved round trip Time
estimation;.
Degree: A new approach for receiver driven Layered multicast
congestion Control with improved round trip Time
estimation, 2014, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/30211
► This research introduces an efficient and new multicast congestion newlinecontrol algorithm for asymmetric paths with improved Round Trip Time newline RTT calculation In the current…
(more)
▼ This research introduces an efficient and new
multicast congestion newlinecontrol algorithm for asymmetric paths
with improved Round Trip Time newline RTT calculation In the
current Internet scenario streaming applications newlinebecome
popular and which use multicast approach Congestion control in
newlinemulticast protocol is a difficult task and lot of research
is going on in this area newlineTo enhance the bandwidth
utilization instead of symmetric path an newlineasymmetric path is
a viable alternative But the existing algorithms are not
newlinedirectly applicable for such application In this thesis we
propose a new newlineprotocol in which the receiver explicitly
adjusts its reception rate according to newlinethe network
conditions using TCP throughput equation and Packet Pair probe
newlineIts effectiveness has been checked by using simulation
techniques The most newlinepopular network simulator ns 2 is used
in this analysis newlineCongestion is the major problem in the
Internet multicast There is newlinea growing set of non TCP
applications such as Internet audio players IP newlinetelephony
video conferencing and bulk file transfer which are generally
newlinecalled as multicast applications So far there have been
three directions of newlinemulticast congestion control proposed
namely sender driven router based newlineand receiver driven Out of
these receiver driven with multi rate is more newlinesuitable for
today s Internet called Multi Rate Multicast Congestion Control
newline MR MCC Internet is having a very large number of computers
with newlinedifferent capacities newline newline
appendix p134-141, reference
p142-149.
Advisors/Committee Members: Selvan S.
Subjects/Keywords: Internet audio players; Multi Rate Multicast Congestion Control; Round Trip Time
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Manager
APA (6th Edition):
C, K. (2014). A new approach for receiver driven Layered multicast
congestion Control with improved round trip Time
estimation;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/30211
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
C, Kalaiarasan. “A new approach for receiver driven Layered multicast
congestion Control with improved round trip Time
estimation;.” 2014. Thesis, Anna University. Accessed March 08, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/30211.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
C, Kalaiarasan. “A new approach for receiver driven Layered multicast
congestion Control with improved round trip Time
estimation;.” 2014. Web. 08 Mar 2021.
Vancouver:
C K. A new approach for receiver driven Layered multicast
congestion Control with improved round trip Time
estimation;. [Internet] [Thesis]. Anna University; 2014. [cited 2021 Mar 08].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/30211.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
C K. A new approach for receiver driven Layered multicast
congestion Control with improved round trip Time
estimation;. [Thesis]. Anna University; 2014. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/30211
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
13.
Tao, Qing.
A Comparison of Waterflood Management Using Arrival Time Optimization and NPV Optimization.
Degree: MS, Petroleum Engineering, 2011, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7238
► Waterflooding is currently the most commonly used method to improve oil recovery after primary depletion. The reservoir heterogeneity such as permeability distribution could negatively affect…
(more)
▼ Waterflooding is currently the most commonly used method to improve oil recovery
after primary depletion. The reservoir heterogeneity such as permeability distribution
could negatively affect the performance of waterflooding. The presence of high
permeability streaks could lead to an early water breakthrough at the producers and thus
reduce the sweep efficiency in the field. One approach to counteract the impact of
heterogeneity and to improve waterflood sweep efficiency is through optimal
rate
allocation to the injectors and producers. Through optimal
rate control, we can manage
the propagation of the flood front, delay water breakthrough at the producers and also
increase the sweep and hence, the recovery efficiency. The arrival time optimization
method uses a streamline-based method to calculate water arrival time sensitivities with
respect to production and injection rates. It can also optimize sweep efficiency on
multiple realizations to account for geological uncertainty. To extend the scope of this
optimization method for more general conditions, this work utilized a finite difference
simulator and streamline tracing software to conduct the optimization.
Apart from sweep efficiency, another most widely used optimization method is
to maximize the net present value (NPV) within a given time period. Previous efforts on
optimization of waterflooding used optimal
control theorem to allocate
injection/production rates for fixed well configurations. The streamline-based approach
gives the optimization result in a much more computationally efficient manner.
In the present study, we compare the arrival time optimization and NPV
optimization results to show their strengths and limitations. The NPV optimization uses
a perturbation method to calculate the gradients. The comparison is conducted on a 4-
spot synthetic case. Then we introduce the accelerated arrival time optimization which
has an acceleration term in the objective function to speed up the oil production in the
field. The proposed new approach has the advantage of considering both the sweep
efficiency and net present value in the field.
Advisors/Committee Members: Datta-Gupta, Akhil (advisor), Jafarpour, Behnam (committee member), Mallick, Bani (committee member).
Subjects/Keywords: waterflood management; arrival time optimization; NPV optimization; rate control; sweep efficiency
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Manager
APA (6th Edition):
Tao, Q. (2011). A Comparison of Waterflood Management Using Arrival Time Optimization and NPV Optimization. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7238
Chicago Manual of Style (16th Edition):
Tao, Qing. “A Comparison of Waterflood Management Using Arrival Time Optimization and NPV Optimization.” 2011. Masters Thesis, Texas A&M University. Accessed March 08, 2021.
http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7238.
MLA Handbook (7th Edition):
Tao, Qing. “A Comparison of Waterflood Management Using Arrival Time Optimization and NPV Optimization.” 2011. Web. 08 Mar 2021.
Vancouver:
Tao Q. A Comparison of Waterflood Management Using Arrival Time Optimization and NPV Optimization. [Internet] [Masters thesis]. Texas A&M University; 2011. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7238.
Council of Science Editors:
Tao Q. A Comparison of Waterflood Management Using Arrival Time Optimization and NPV Optimization. [Masters Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-12-7238
University of Pretoria
14.
Grant, C.C. (Catharina
Cornelia).
The effect of
intensive physical training on cardiac autonomic variability -
factors that may influence the results.
Degree: Physiology, 2011, University of Pretoria
URL: http://hdl.handle.net/2263/24161
► The study dealt with the influence of exercise on the autonomic nervous system (ANS) and with factors that may influence the results. ANS function was…
(more)
▼ The study dealt with the influence of exercise on the
autonomic nervous system (ANS) and with factors that may influence
the results. ANS function was measured in 183 young, healthy
participants, before and after a twelve week standardised,
medium-to-high volume physical training programme, in a controlled
environment. The effects of the training programme were assessed on
resting ANS functioning, during standing and on the response to an
orthostatic challenge. ANS function was assessed by means of heart
rate variability (HRV) determination. HRV was quantified by three
different analytical techniques, i.e., time domain analysis (RR,
STDRR, RMSSD and pNN50), frequency domain analysis (LF,LFnu, HF,
HFnu and LF/HF) and Poincaré plot analysis (SD1 and SD2). The
influence of technical variations, such as variations in tachogram
length and period of recording, as well as the influence of
pre-intervention values of physiological variables, such as blood
pressure, BMI, VO2 max and ANS functioning, on the response to the
exercise intervention, were assessed. Results on the exercise
intervention showed: Increased supine, as well
as standing, parasympathetic cardiac
control as indicated by time
domain, frequency domain and Poincaré analyses.
Decreased sympathetic
control in the supine
position and increased sympathetic
control during rising and
standing. Increased vagal withdrawal, as well
as increased sympathetic
control during the first phase of the
orthostatic response to rising from the supine position.
Only an exercise-induced increase in
sympathetic
control when the orthostatic response was measured as
the difference between standing and supine.
Results on exercise-induced changes in sympathetic and
parasympathetic ANS
control differ, depending on posture. It is
suggested that the effects of an exercise intervention on
sympathetic and parasympathetic ANS
control of the heart should be
assessed from measurements in the supine, in the standing, and in
response to an orthostatic stressor. It is further suggested that
information obtained during rising will give additional information
on the response of the ANS. This study showed that technical as
well as physiological variations may lead to differences in the
outcome of HRV studies. Results from the technique evaluation
showed that the length and period of tachogram recordings should be
standardised, especially during an orthostatic challenge. Starting
the recording too late will miss out on the initial response to a
change in body position. Longer recording times will represent the
mean of HRV values obtained during the orthostatic response and
that obtained after stabilisation in the standing position.
Investigations into the influence of pre-intervention physiological
status on exercise-induced changes showed:
Baseline ANS functioning is a significant contributor to variations
in the ANS response to an exercise intervention.
Pre-intervention values for physiological
variables, such as blood pressure, BMI…
Advisors/Committee Members: Viljoen, Margaretha (advisor).
Subjects/Keywords: Autonomic
nervous system; Exercise
effects; Cardiac
control; Heart rate
variability;
UCTD
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Manager
APA (6th Edition):
Grant, C. C. (. (2011). The effect of
intensive physical training on cardiac autonomic variability -
factors that may influence the results. (Doctoral Dissertation). University of Pretoria. Retrieved from http://hdl.handle.net/2263/24161
Chicago Manual of Style (16th Edition):
Grant, C C (Catharina. “The effect of
intensive physical training on cardiac autonomic variability -
factors that may influence the results.” 2011. Doctoral Dissertation, University of Pretoria. Accessed March 08, 2021.
http://hdl.handle.net/2263/24161.
MLA Handbook (7th Edition):
Grant, C C (Catharina. “The effect of
intensive physical training on cardiac autonomic variability -
factors that may influence the results.” 2011. Web. 08 Mar 2021.
Vancouver:
Grant CC(. The effect of
intensive physical training on cardiac autonomic variability -
factors that may influence the results. [Internet] [Doctoral dissertation]. University of Pretoria; 2011. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2263/24161.
Council of Science Editors:
Grant CC(. The effect of
intensive physical training on cardiac autonomic variability -
factors that may influence the results. [Doctoral Dissertation]. University of Pretoria; 2011. Available from: http://hdl.handle.net/2263/24161
Brigham Young University
15.
Wang, Lei.
Modeling and Designing Fair Rate Control for Wireless Mesh Networks with Partial Interference.
Degree: PhD, 2011, Brigham Young University
URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3906&context=etd
► Internet rate control protocols, such as TCP, encounter severe performance problems in wireless mesh networks. Because wireless networks use shared communication channels, contention and interference…
(more)
▼ Internet rate control protocols, such as TCP, encounter severe performance problems in wireless mesh networks. Because wireless networks use shared communication channels, contention and interference can significantly degrade flow throughput and fairness. Existing research takes either an engineering-based or optimization-based approach to solve the performance problems. The engineering-based approach usually solves a specific observed problem, but does not necessarily optimize the overall performance. The optimization-based approach mathematically models the network to find the optimal resource allocation among competing flows. The model can lead to a distributed rate control algorithm with performance guarantees, but relatively little work has been done to verify that the algorithm leads to good performance in real networks. This dissertation develops a more accurate network optimization model, implements the derived distributed rate control algorithm in a mesh testbed, and discusses observations in the extensive experiments. We first synthesize models used for optimizing fair rate control for wireless mesh networks, and discuss their tradeoffs. We then propose a partial interference model which uses more accurate objective functions and constraints as compared to the binary interference model. Numerical results show that the partial interference model outperforms the binary interference model in all scenarios tested, and the results also suggest that partial interference should be modeled separately from contention. Our experimental results confirm the prevalence of partial interference in our mesh testbed, and show that the partial interference model results in significantly improved performance in a typical interference topology. We also observe a significant deviation between theory and practice, whereby, the assumption of a linear relationship between interfering links breaks in our experiments. We discuss several directions to further investigate this issue.
Subjects/Keywords: Wireless mesh networks; fair rate control; Computer Sciences
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APA (6th Edition):
Wang, L. (2011). Modeling and Designing Fair Rate Control for Wireless Mesh Networks with Partial Interference. (Doctoral Dissertation). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3906&context=etd
Chicago Manual of Style (16th Edition):
Wang, Lei. “Modeling and Designing Fair Rate Control for Wireless Mesh Networks with Partial Interference.” 2011. Doctoral Dissertation, Brigham Young University. Accessed March 08, 2021.
https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3906&context=etd.
MLA Handbook (7th Edition):
Wang, Lei. “Modeling and Designing Fair Rate Control for Wireless Mesh Networks with Partial Interference.” 2011. Web. 08 Mar 2021.
Vancouver:
Wang L. Modeling and Designing Fair Rate Control for Wireless Mesh Networks with Partial Interference. [Internet] [Doctoral dissertation]. Brigham Young University; 2011. [cited 2021 Mar 08].
Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3906&context=etd.
Council of Science Editors:
Wang L. Modeling and Designing Fair Rate Control for Wireless Mesh Networks with Partial Interference. [Doctoral Dissertation]. Brigham Young University; 2011. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=3906&context=etd
16.
Feilen, Harry Martin.
Attrition Rate Of Oxygen Carriers In Chemical Looping Combustion Systems.
Degree: MS, Mechanical Engineering, 2015, University of North Dakota
URL: https://commons.und.edu/theses/1894
► ABSTRACT This project developed an evaluation methodology for determining, accurately and rapidly, the attrition resistance of oxygen carrier materials used in chemical looping technologies.…
(more)
▼ ABSTRACT
This project developed an evaluation methodology for determining, accurately and rapidly, the attrition resistance of oxygen carrier materials used in chemical looping technologies. Existing test protocols, to evaluate attrition resistance of granular materials, are conducted under non-reactive and ambient temperature conditions. They do not accurately reflect the actual behavior under the unique process conditions of chemical looping, including high temperatures and cyclic operation between oxidizing and reducing atmospheres. This project developed a test method and equipment that represented a significant improvement over existing protocols.
Experimental results obtained from this project have shown that hematite exhibits different modes of attrition, including both due to mechanical stresses and due to structural changes in the particles due to chemical reaction at high temperature. The test methodology has also proven effective in providing reactivity changes of the material with continued use, a property, which in addition to attrition, determines material life. Consumption/replacement cost due to attrition or loss of reactivity is a critical factor in the economic application of the chemical looping technology.
This test method will allow rapid evaluation of a wide range of materials that are best suited for this this technology. The most important anticipated public benefit of this project is the acceleration of the development of chemical looping technology for lowering greenhouse gas emissions from fossil fuel combustion.
Advisors/Committee Members: Nanak S. Grewal.
Subjects/Keywords: Attrition rate; Chemical Looping; CO2 control; Coal Combustion; Oxygen Carriers
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APA (6th Edition):
Feilen, H. M. (2015). Attrition Rate Of Oxygen Carriers In Chemical Looping Combustion Systems. (Masters Thesis). University of North Dakota. Retrieved from https://commons.und.edu/theses/1894
Chicago Manual of Style (16th Edition):
Feilen, Harry Martin. “Attrition Rate Of Oxygen Carriers In Chemical Looping Combustion Systems.” 2015. Masters Thesis, University of North Dakota. Accessed March 08, 2021.
https://commons.und.edu/theses/1894.
MLA Handbook (7th Edition):
Feilen, Harry Martin. “Attrition Rate Of Oxygen Carriers In Chemical Looping Combustion Systems.” 2015. Web. 08 Mar 2021.
Vancouver:
Feilen HM. Attrition Rate Of Oxygen Carriers In Chemical Looping Combustion Systems. [Internet] [Masters thesis]. University of North Dakota; 2015. [cited 2021 Mar 08].
Available from: https://commons.und.edu/theses/1894.
Council of Science Editors:
Feilen HM. Attrition Rate Of Oxygen Carriers In Chemical Looping Combustion Systems. [Masters Thesis]. University of North Dakota; 2015. Available from: https://commons.und.edu/theses/1894
University of Ontario Institute of Technology
17.
Nanner, Harmeet.
The impact of assisted dying on suicidality: a synthetic control analysis of population suicide rates.
Degree: 2019, University of Ontario Institute of Technology
URL: http://hdl.handle.net/10155/1062
► Adoption of assisted dying is growing, but one argument against these policies is that they cause a suicide contagion, thus increasing suicides. Evidence for the…
(more)
▼ Adoption of assisted dying is growing, but one argument against these policies is that they cause a suicide contagion, thus increasing suicides. Evidence for the assisted dying-suicide link does not currently exist, and in general, research is scarce. I add to this body of literature to help stakeholders understand the consequences of such policies. I performed a time series study to determine how suicide rates changed in Belgium after assisted dying was introduced in 2002. The synthetic
control method was chosen for the analysis, and additional European nations were included as placebos. The results show no change in suicide rates following the assisted dying policy change. A comparison of MSPE ratios with placebo countries also suggest statistical insignificance (p = 0.29). I conclude that there is no evidence that Belgium???s assisted dying policy is associated with a change in suicide rates or a suicide contagion.
Advisors/Committee Members: Gamble, Brenda, Rudoler, David.
Subjects/Keywords: Assisted dying; Synthetic control method; Suicide rate; Suicide contagion; Belgium
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APA (6th Edition):
Nanner, H. (2019). The impact of assisted dying on suicidality: a synthetic control analysis of population suicide rates. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/1062
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nanner, Harmeet. “The impact of assisted dying on suicidality: a synthetic control analysis of population suicide rates.” 2019. Thesis, University of Ontario Institute of Technology. Accessed March 08, 2021.
http://hdl.handle.net/10155/1062.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nanner, Harmeet. “The impact of assisted dying on suicidality: a synthetic control analysis of population suicide rates.” 2019. Web. 08 Mar 2021.
Vancouver:
Nanner H. The impact of assisted dying on suicidality: a synthetic control analysis of population suicide rates. [Internet] [Thesis]. University of Ontario Institute of Technology; 2019. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10155/1062.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nanner H. The impact of assisted dying on suicidality: a synthetic control analysis of population suicide rates. [Thesis]. University of Ontario Institute of Technology; 2019. Available from: http://hdl.handle.net/10155/1062
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Utah State University
18.
Montes, Juan J.
Modulation of the Nutritional Context and Early Experience as New Tools to Increase the Use of Medusahead (Taeniatherum caput-medusae ssp. asperum) by Grazing Sheep.
Degree: PhD, Wildland Resources, 2016, Utah State University
URL: https://digitalcommons.usu.edu/etd/4876
► The success of medusahead (Taeniatherum caput-medusae ssp. asperum) as an invasive exotic grass in the western US is attributed in part to its low…
(more)
▼ The success of medusahead (
Taeniatherum caput-medusae ssp. asperum) as an invasive exotic grass in the western US is attributed in part to its low palatability. The nutritional context where medusahead grows can be modulated by the use of supplements that increase herbivores’ preference for unpalatable feeds. Additionally, positive experiences early in life (with mother, with supplements) can have long-life influences on preference for unpalatable feeds. To test the influence of the nutritional context on medusahead intake, ewes grazed with their lambs during summer of 2013 on medusahead-infested rangeland with (Treatment) or without (
Control) the daily provision of an energy-rich supplement. To test for the effect of experience early in life at grazing medusahead on use of this weed later in life, lambs that grazed with their mothers during 2013 (Experienced) were exposed to medusahead (in pens and during grazing) as yearlings during summer of 2014 along with inexperienced (
Control) animals. To better understand the unpalatability of medusahead, the fermentation kinetics of medusahead at different phenological stages and particle sizes was assessed. Ewes grazing with their lambs showed low use of medusahead (5% of the grazing events recorded), even when supplemented. Nevertheless, medusahead use increased across the grazing period and utilization was similar to medusahead abundance in the plant community. Use of medusahead by nursing lambs was correlated with that observed by their mothers and lambs utilized medusahead to the same extent either before or after weaning. Yearlings in pens showed low intake of medusahead and a cyclic pattern of intake across days. However, experienced yearlings displayed a more even intake of medusahead across days and a greater gain-to-feed ratio than
Control yearlings. All yearlings showed low to nil use of medusahead during grazing. Medusahead had lower fermentation rates than alfalfa hay and fermentation rates declined with plant maturity. Organic matter digestibility for medusahead declined as particle size of the substrate increased, a relationship that explains the low palatability of the weed. These results provide the foundation for grazing treatments aimed at reducing the abundance of the weed or at preventing its spread in rangelands with different levels of medusahead infestations.
Advisors/Committee Members: Juan J. Villalba, ;.
Subjects/Keywords: energy supplementation; fermentation rate; grazing; preference; silica; weed control; Life Sciences
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APA (6th Edition):
Montes, J. J. (2016). Modulation of the Nutritional Context and Early Experience as New Tools to Increase the Use of Medusahead (Taeniatherum caput-medusae ssp. asperum) by Grazing Sheep. (Doctoral Dissertation). Utah State University. Retrieved from https://digitalcommons.usu.edu/etd/4876
Chicago Manual of Style (16th Edition):
Montes, Juan J. “Modulation of the Nutritional Context and Early Experience as New Tools to Increase the Use of Medusahead (Taeniatherum caput-medusae ssp. asperum) by Grazing Sheep.” 2016. Doctoral Dissertation, Utah State University. Accessed March 08, 2021.
https://digitalcommons.usu.edu/etd/4876.
MLA Handbook (7th Edition):
Montes, Juan J. “Modulation of the Nutritional Context and Early Experience as New Tools to Increase the Use of Medusahead (Taeniatherum caput-medusae ssp. asperum) by Grazing Sheep.” 2016. Web. 08 Mar 2021.
Vancouver:
Montes JJ. Modulation of the Nutritional Context and Early Experience as New Tools to Increase the Use of Medusahead (Taeniatherum caput-medusae ssp. asperum) by Grazing Sheep. [Internet] [Doctoral dissertation]. Utah State University; 2016. [cited 2021 Mar 08].
Available from: https://digitalcommons.usu.edu/etd/4876.
Council of Science Editors:
Montes JJ. Modulation of the Nutritional Context and Early Experience as New Tools to Increase the Use of Medusahead (Taeniatherum caput-medusae ssp. asperum) by Grazing Sheep. [Doctoral Dissertation]. Utah State University; 2016. Available from: https://digitalcommons.usu.edu/etd/4876
Colorado School of Mines
19.
Lambie, Patrick.
Concept implementation of small scale active control volumetric flow rate meter.
Degree: MS(M.S.), Petroleum Engineering, 2017, Colorado School of Mines
URL: http://hdl.handle.net/11124/171191
► Despite many shortcomings, methods claiming to measure volumetric flow rate (VFR) have been widely applied to delta flow integrated on land drilling operations. Sensors, paddles,…
(more)
▼ Despite many shortcomings, methods claiming to measure volumetric flow
rate (VFR) have been widely applied to delta flow integrated on land drilling operations. Sensors, paddles, and Coriolis meters appear scattered around location trying to detect an influx/loss before the bit makes hole. While this approach is interesting, the fact remains that the mud pump is the only equipment on location capable of truly identifying VFR (other than the efficiency loss). Current methods have failed to measure VFR at the return until now. The Active
Control VFR Meter operates off the mass continuity principle using a progressive cavity pump PCP to maintain a fluid level of returns in a cone bottom tank, filled from the return line. The lab tested small scale Active
Control VFR Meter demonstrates the ability to quickly identify changes in VFR before increasing or decreasing the pump output to measure the volumetric flow
rate of the return line. Fluid density is calculated at the Active
Control VFR Meter using tank sensor measurements. PCPs can pump a wide range of multiphase media typical to drilling operations, so the testing and implementation of this VFR meter has the potential to change how future drilling operations measure return flow
rate, early influx detection, and measure VFR with gpm accuracy.
Advisors/Committee Members: Sampaio, Jorge (advisor), Eustes, Alfred William (committee member), Abass, Hazim H. (committee member).
Subjects/Keywords: flow rate meter; volumetric flow meter; kick; active control
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APA (6th Edition):
Lambie, P. (2017). Concept implementation of small scale active control volumetric flow rate meter. (Masters Thesis). Colorado School of Mines. Retrieved from http://hdl.handle.net/11124/171191
Chicago Manual of Style (16th Edition):
Lambie, Patrick. “Concept implementation of small scale active control volumetric flow rate meter.” 2017. Masters Thesis, Colorado School of Mines. Accessed March 08, 2021.
http://hdl.handle.net/11124/171191.
MLA Handbook (7th Edition):
Lambie, Patrick. “Concept implementation of small scale active control volumetric flow rate meter.” 2017. Web. 08 Mar 2021.
Vancouver:
Lambie P. Concept implementation of small scale active control volumetric flow rate meter. [Internet] [Masters thesis]. Colorado School of Mines; 2017. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11124/171191.
Council of Science Editors:
Lambie P. Concept implementation of small scale active control volumetric flow rate meter. [Masters Thesis]. Colorado School of Mines; 2017. Available from: http://hdl.handle.net/11124/171191
20.
Mansano, Raul Katayama [UNESP].
Controle adaptativo multi-rate para eficiência energética em sistemas de controle via redes sem fio.
Degree: 2016, Universidade Estadual Paulista
URL: http://hdl.handle.net/11449/144597
► Com os recentes avanços das tecnologias sem fio e a proliferação de sensores sem fio, há um crescente interesse na implementação de Sistemas Controle via…
(more)
▼ Com os recentes avanços das tecnologias sem fio e a proliferação de sensores sem fio, há um crescente interesse na implementação de Sistemas Controle via Redes Sem Fio (WNCSs), que fornecem vantagens em relação às arquiteturas tradicionais ponto-a-ponto e às arquiteturas de redes cabeadas. Apesar das vantagens, a inserção de redes industriais na malha de controle impõe não-linearidades e restrições que afetam o desempenho e a estabilidade do WNCS. Além disto, uma questão fundamental para aplicações de WNCS é a vida útil da bateria de alimentação dos sensores sem fio, uma vez que é uma fonte limitada de energia. Como a transmissão da informação na rede sem fio requer um alto gasto energético pelo dispositivo, deve-se restringir a quantidade de comunicações para poupar bateria. Esta restrição inviabiliza o uso de sensores sem fio em diversas aplicações de WNCS. Neste contexto, este trabalho apresenta o desenvolvimento de um controlador adaptativo multi-rate para eficiência energética em aplicações industriais de WNCSs, através da diminuição da frequência de transmissão de dados na rede e, portanto, redução do consumo energético dos dispositivos sem fio. Um controlador adaptativo auto-ajustável foi implementado para identificar o modelo do WNCS, simular tal modelo e sintonizar os parâmetros do controlador a cada passo de controle, fornecendo robustez contra distúrbios e não-linearidades inerentes ao WNCS. O diferencial do controlador adaptativo é a incorporação das técnicas de identificação por pacote e de controle multi-rate. A técnica de identificação por pacote consiste em transmitir mensagens com vários dados (não somente o mais atual) coletados durante o período de amostragem do sensor sem fio, melhorando a identificação do modelo do WNCS e, consequentemente, o desempenho do controlador adaptativo. A técnica de controle multi-rate consiste em usar dados virtuais de realimentação, provenientes do modelo simulado do WNCS, para possibilitar uma atuação sobre o processo a uma frequência mais rápida que a amostragem dos sensores sem fio, permitindo a redução das transmissões sem fio do WNCS. Resultados experimentais mostram que o controlador adaptativo multi-rate é robusto e efetivo para aplicações de WNCS, permitindo poupar energia das baterias dos sensores sem fio sem prejudicar significativamente o desempenho de controle do WNCS. As análises do impacto do período de amostragem e do parâmetro Γ do controlador permitiram a obtenção de valores ótimos para a melhoria da eficiência energética do WNCS.
Recent advances in wireless technologies and the proliferation of wireless sensors led to an increasing interest in the implementation of Wireless Networked Control Systems (WNCS), which provide advantages over traditional peer-to-peer and cabled networks architectures. Despite these advantages, inserting a communication network in the control loop impose nonlinearities and constraints which affect stability and performance of the system. Furthermore, a major issue in wireless applications is the lifetime of the sensors…
Advisors/Committee Members: Godoy, Eduardo Paciencia [UNESP], Colón, Diego [UNESP], Universidade Estadual Paulista (UNESP).
Subjects/Keywords: Sistemas de Controle via Redes Sem Fio; Eficiência Energética; Controle Adaptativo Auto-Ajustável; Controle Multi-Rate; Wireless Networked Control Systems; Energy Efficiency; Self-Tuning Adaptive Control; Multi-Rate Control
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APA (6th Edition):
Mansano, R. K. [. (2016). Controle adaptativo multi-rate para eficiência energética em sistemas de controle via redes sem fio. (Thesis). Universidade Estadual Paulista. Retrieved from http://hdl.handle.net/11449/144597
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mansano, Raul Katayama [UNESP]. “Controle adaptativo multi-rate para eficiência energética em sistemas de controle via redes sem fio.” 2016. Thesis, Universidade Estadual Paulista. Accessed March 08, 2021.
http://hdl.handle.net/11449/144597.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mansano, Raul Katayama [UNESP]. “Controle adaptativo multi-rate para eficiência energética em sistemas de controle via redes sem fio.” 2016. Web. 08 Mar 2021.
Vancouver:
Mansano RK[. Controle adaptativo multi-rate para eficiência energética em sistemas de controle via redes sem fio. [Internet] [Thesis]. Universidade Estadual Paulista; 2016. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11449/144597.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mansano RK[. Controle adaptativo multi-rate para eficiência energética em sistemas de controle via redes sem fio. [Thesis]. Universidade Estadual Paulista; 2016. Available from: http://hdl.handle.net/11449/144597
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Delft University of Technology
21.
Kuiper, R.J. (author).
The effect of offering Natural Force Feedback and Haptic Shared Control on Rate and Force Control of a Deep Sea Mining Suspended Grab.
Degree: 2012, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:156434e6-1fd8-4bfb-916c-b7e7af040d1a
► Experimental research with human subjects on the effect of offering different types of haptic feedback to improve the human performance during a deep-sea mining task…
(more)
▼ Experimental research with human subjects on the effect of offering different types of haptic feedback to improve the human performance during a deep-sea mining task using a suspended grab.
BMD
BioMechanical Engineering
Mechanical, Maritime and Materials Engineering
Advisors/Committee Members: Van der Helm, F.C.T. (mentor), Abbink, D.A. (mentor).
Subjects/Keywords: deep-sea mining; haptic feedback; natural force feedback; haptic shared control; rate control; force control; suspended grab
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APA (6th Edition):
Kuiper, R. J. (. (2012). The effect of offering Natural Force Feedback and Haptic Shared Control on Rate and Force Control of a Deep Sea Mining Suspended Grab. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:156434e6-1fd8-4bfb-916c-b7e7af040d1a
Chicago Manual of Style (16th Edition):
Kuiper, R J (author). “The effect of offering Natural Force Feedback and Haptic Shared Control on Rate and Force Control of a Deep Sea Mining Suspended Grab.” 2012. Masters Thesis, Delft University of Technology. Accessed March 08, 2021.
http://resolver.tudelft.nl/uuid:156434e6-1fd8-4bfb-916c-b7e7af040d1a.
MLA Handbook (7th Edition):
Kuiper, R J (author). “The effect of offering Natural Force Feedback and Haptic Shared Control on Rate and Force Control of a Deep Sea Mining Suspended Grab.” 2012. Web. 08 Mar 2021.
Vancouver:
Kuiper RJ(. The effect of offering Natural Force Feedback and Haptic Shared Control on Rate and Force Control of a Deep Sea Mining Suspended Grab. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 08].
Available from: http://resolver.tudelft.nl/uuid:156434e6-1fd8-4bfb-916c-b7e7af040d1a.
Council of Science Editors:
Kuiper RJ(. The effect of offering Natural Force Feedback and Haptic Shared Control on Rate and Force Control of a Deep Sea Mining Suspended Grab. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:156434e6-1fd8-4bfb-916c-b7e7af040d1a
Universitat Politècnica de València
22.
Solanes Galbis, Juan Ernesto.
MULTI-RATE VISUAL FEEDBACK ROBOT CONTROL
.
Degree: 2015, Universitat Politècnica de València
URL: http://hdl.handle.net/10251/57951
► [EN] This thesis deals with two characteristic problems in visual feedback robot control: 1) sensor latency; 2) providing suitable trajectories for the robot and for…
(more)
▼ [EN] This thesis deals with two characteristic problems in visual feedback robot
control: 1) sensor latency; 2) providing suitable trajectories for the robot and for the measurement in the image. All the approaches presented in this work are analyzed and implemented on a 6 DOF industrial robot manipulator or/and a wheeled robot.
Focusing on the sensor latency problem, this thesis proposes the use of dual-
rate high order holds within the
control loop of robots. In this sense, the main contributions are:
- Dual-
rate high order holds based on primitive functions for robot
control (Chapter 3): analysis of the system performance with and without the use of this multi-
rate technique from non-conventional
control. In addition, as consequence of the use of dual-
rate holds, this work obtains and validates multi-
rate controllers, especially dual-
rate PIDs.
- Asynchronous dual-
rate high order holds based on primitive functions with time delay compensation (Chapter 3): generalization of asynchronous dual-
rate high order holds incorporating an input signal time delay compensation component, improving thus the inter-sampling estimations computed by the hold. It is provided an analysis of the properties of such dual-
rate holds with time delay compensation, comparing them with estimations obtained by the equivalent dual-
rate holds without this compensation, as well as their implementation and validation within the
control loop of a 6 DOF industrial robot manipulator.
- Multi-
rate nonlinear high order holds (Chapter 4): generalization of the concept of dual-
rate high order holds with nonlinear estimation models, which include information about the plant to be controlled, the controller(s) and sensor(s) used, obtained from machine learning techniques. Thus, in order to obtain such a nonlinear hold, it is described a methodology non dependent of the machine technique used, although validated using artificial neural networks. Finally, an analysis of the properties of these new holds is carried out, comparing them with their equivalents based on primitive functions, as well as their implementation and validation within the
control loop of an industrial robot manipulator and a wheeled robot.
With respect to the problem of providing suitable trajectories for the robot and for the measurement in the image, this thesis presents the novel reference features filtering
control strategy and its generalization from a multi-
rate point of view. The main contributions in this regard are:
- Reference features filtering
control strategy (Chapter 5): a new
control strategy is proposed to enlarge significantly the solution task reachability of robot visual feedback
control. The main idea is to use optimal trajectories proposed by a non-linear EKF predictor-smoother (ERTS), based on Rauch-Tung-Striebel (RTS) algorithm, as new feature references for an underlying visual feedback controller. In this work it is provided both the description of the implementation algorithm and its implementation and validation utilizing an industrial robot manipulator.
-…
Advisors/Committee Members: Armesto Ángel, Leopoldo (advisor), Tornero Montserrat, Josep (advisor).
Subjects/Keywords: Visual feedback control; visual servoing; multi-rate control; nonlinear control; industrial robot systems; wheeled robots; machine learning.
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APA (6th Edition):
Solanes Galbis, J. E. (2015). MULTI-RATE VISUAL FEEDBACK ROBOT CONTROL
. (Doctoral Dissertation). Universitat Politècnica de València. Retrieved from http://hdl.handle.net/10251/57951
Chicago Manual of Style (16th Edition):
Solanes Galbis, Juan Ernesto. “MULTI-RATE VISUAL FEEDBACK ROBOT CONTROL
.” 2015. Doctoral Dissertation, Universitat Politècnica de València. Accessed March 08, 2021.
http://hdl.handle.net/10251/57951.
MLA Handbook (7th Edition):
Solanes Galbis, Juan Ernesto. “MULTI-RATE VISUAL FEEDBACK ROBOT CONTROL
.” 2015. Web. 08 Mar 2021.
Vancouver:
Solanes Galbis JE. MULTI-RATE VISUAL FEEDBACK ROBOT CONTROL
. [Internet] [Doctoral dissertation]. Universitat Politècnica de València; 2015. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10251/57951.
Council of Science Editors:
Solanes Galbis JE. MULTI-RATE VISUAL FEEDBACK ROBOT CONTROL
. [Doctoral Dissertation]. Universitat Politècnica de València; 2015. Available from: http://hdl.handle.net/10251/57951
University of Pretoria
23.
Ngomane, L.N. (Lindokuhle Matrue).
The impact of indoor residual spraying (IRS) on malaria
prevalence between 2001 and 2009 in Mpumalanga province, South
Africa
.
Degree: 2012, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-05212012-153916/
► Background Malaria remains a serious epidemic threat in the Lowveld region of Mpumalanga Province. In order to appropriately target interventions to achieve substantial reductions in…
(more)
▼ Background Malaria remains a serious epidemic threat
in the Lowveld region of Mpumalanga Province. In order to
appropriately target interventions to achieve substantial
reductions in malaria morbidity and mortality, there is a need to
assess the impact of current
control interventions such as indoor
residual spraying (IRS) for vector
control. This study aimed to
assess long-term changes in the burden of malaria in Mpumalanga
Province during the past eight years (2001-2009) and whether IRS
and climate variability had an effect on these changes. Methods All
malaria cases and deaths notified to the Malaria
Control Programme,
Department of Health was reviewed for the period 2001 to 2009. Data
were retrieved from the provincial Integrated Malaria Information
System (IMIS) database. Climate and population data were obtained
from the South Africa Weather Service and Statistics South Africa,
respectively. Descriptive statistics were computed to determine any
temporal changes in malaria morbidity and mortality. Autoregressive
integrated moving average (ARIMA) models were developed to assess
the effect of climatic factors on malaria. Results Within the
eight-year period of the study, a total of 35,191 cases and 164
deaths-attributed to malaria were notified in Mpumalanga Province.
There was a significant decrease in the incidence of malaria in
Mpumalanga Province from 385 in 2001/02 to 50 cases per 100,000
population in 2008/09 (P < 0.005). The overall incidence and
case fatality rates were 134 cases per 100,000 and 0.54%,
respectively. Malaria incidence and case fatality
rate by gender
showed significant differences, higher in males than in L.M.
Ngomane University of Pretoria, 2012 iv females (166.9 versus
106.4; P < 0.001; CFR 0.41% versus 0.55%). The incidence of
malaria increased from age 5-14 years (70), reaching a peak at age
25-34 years (190), declining thereafter (50 in those >65 years).
Mortality due to malaria was higher in those >65 years, the mean
CFR reaching a 2.1% peak. Almost half (47.8%) of the notified cases
originated from Mozambique and Mpumalanga Province itself
constituted 50.1%. The distribution of malaria varied across the
districts, highest in Ehlanzeni district (96.5%), lowest in
Nkangala (<1%) and Gert Sibande (<1%). A notable decline in
malaria case notification was observed following the increased IRS
coverage from 2006/07 to 2008/09 malaria seasons. A distinct
seasonal transmission pattern was found to be significantly related
to changes in rainfall patterns (P = 0.007). Conclusion Decades of
continuous IRS with insecticides have proved to be successful in
reducing the burden of malaria morbidity and mortality in
Mpumalanga Province between 2001 and 2009. A decline of above 50%
in malaria morbidity and mortality was observed following expanded
IRS coverage. These results highlight the need to continue with IRS
together with other
control strategies until interruption in local
malaria transmission is completely achieved and alternative vector
control strategies implemented. Efforts need to be…
Advisors/Committee Members: De Jager, Christiaan (advisor).
Subjects/Keywords: Vector control;
Climate;
Indoor residual spraying;
Case fatality rate;
Incidence rate;
Mortality;
Prevalence;
Malaria;
Morbidity;
UCTD
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CSE |
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Manager
APA (6th Edition):
Ngomane, L. N. (. M. (2012). The impact of indoor residual spraying (IRS) on malaria
prevalence between 2001 and 2009 in Mpumalanga province, South
Africa
. (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-05212012-153916/
Chicago Manual of Style (16th Edition):
Ngomane, L N (Lindokuhle Matrue). “The impact of indoor residual spraying (IRS) on malaria
prevalence between 2001 and 2009 in Mpumalanga province, South
Africa
.” 2012. Masters Thesis, University of Pretoria. Accessed March 08, 2021.
http://upetd.up.ac.za/thesis/available/etd-05212012-153916/.
MLA Handbook (7th Edition):
Ngomane, L N (Lindokuhle Matrue). “The impact of indoor residual spraying (IRS) on malaria
prevalence between 2001 and 2009 in Mpumalanga province, South
Africa
.” 2012. Web. 08 Mar 2021.
Vancouver:
Ngomane LN(M. The impact of indoor residual spraying (IRS) on malaria
prevalence between 2001 and 2009 in Mpumalanga province, South
Africa
. [Internet] [Masters thesis]. University of Pretoria; 2012. [cited 2021 Mar 08].
Available from: http://upetd.up.ac.za/thesis/available/etd-05212012-153916/.
Council of Science Editors:
Ngomane LN(M. The impact of indoor residual spraying (IRS) on malaria
prevalence between 2001 and 2009 in Mpumalanga province, South
Africa
. [Masters Thesis]. University of Pretoria; 2012. Available from: http://upetd.up.ac.za/thesis/available/etd-05212012-153916/
Stellenbosch University
24.
Holness, Jennifer Lyn.
Glomerular filtration rate measurement and estimation : improvement and validation of existing methods.
Degree: PhD, Medical Imaging and Clinical Oncology, 2019, Stellenbosch University
URL: http://hdl.handle.net/10019.1/107242
► ENGLISH SUMMARY : Glomerular filtration rate (GFR) is regarded as the best measure of kidney function. It can either be measured or estimated. This dissertation…
(more)
▼ ENGLISH SUMMARY : Glomerular filtration
rate (GFR) is regarded as the best measure of kidney function. It can either be measured or estimated. This dissertation aims to provide a better understanding of GFR measurement in order to improve its performance and interpretation. It also aims to validate GFR estimation in local populations and to demonstrate the utility of simple adaptations of existing equations to improve estimation.
On completion of a GFR measurement, various quality
control (QC) checks are performed to ensure the accuracy of the result. However, this requires comparison with clearly defined reference ranges. In a study of healthy, potential kidney donors, reference data for two QC parameters were defined.
In a study analysing the effect of measurement errors on GFR, the single-sample method was found to be the most robust technique overall, although for all methods measurement error was generally insignificant compared to expected biological variation in GFR. However, at low GFR values measurement errors were shown to affect all methods significantly. Errors in measurement of the doses were found to have the greatest impact on accuracy.
Using nuclear medicine techniques 51Cr-ethylenediaminetetra-acetic acid (51Cr-EDTA) is the most commonly used and widely studied exogenous filtration marker. However, 99mTc-diethylenetriaminepenta-acetic acid (99mTc-DTPA) is gaining favour because of a few technical advantages it has over 51Cr-EDTA, its lower cost, and recent issues with the availability of 51Cr-EDTA. In response to a systematic review suggesting that GFR measurement from the plasma clearance of 99mTc-DTPA was inaccurate, a mini meta-analysis was performed that demonstrated excellent agreement between 51Cr-EDTA and 99mTc-DTPA clearance, thus supporting the use of 99mTc-DTPA as a reliable alternative.
Where GFR cannot be routinely measured, it is frequently estimated using a creatinine-based equation. The use of any equation first requires validation in the population in which it will be used. In a study evaluating the Modification of Diet in Renal Disease (MDRD) and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations in non-cancer, mixed ancestry adults, both equations were found to perform well. However, in a study that evaluated equations in adults with cancer, the GFR estimates were found to be biased and imprecise. This study highlighted the limitations of using estimated GFR for guiding management decisions in cancer patients. A further study evaluated 11 estimating equations in non-cancer and cancer populations of South African children. The accuracy of all estimates was poor, particularly in the cancer group. Given the extensive use of GFR estimates in South Africa, these findings have profound implications for their use in the management of children and adults with cancer in this country.
Developing new equations for a specific population requires large datasets and incurs costs that are impractical in most middle- or low-income countries. A simpler alternative is to adapt…
Advisors/Committee Members: Warwick, James Mathew, Davids, Mogamat Razeen, Stellenbosch University. Faculty of Medicine and Health Sciences. Dept. of Medical Imaging and Clinical Oncology. Nuclear Medicine..
Subjects/Keywords: Glomerular filtration rate – Examinations – Interpretation; Glomerular filtration rate – Examinations – Validity; Kidney function tests – Quality control; UCTD
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Holness, J. L. (2019). Glomerular filtration rate measurement and estimation : improvement and validation of existing methods. (Doctoral Dissertation). Stellenbosch University. Retrieved from http://hdl.handle.net/10019.1/107242
Chicago Manual of Style (16th Edition):
Holness, Jennifer Lyn. “Glomerular filtration rate measurement and estimation : improvement and validation of existing methods.” 2019. Doctoral Dissertation, Stellenbosch University. Accessed March 08, 2021.
http://hdl.handle.net/10019.1/107242.
MLA Handbook (7th Edition):
Holness, Jennifer Lyn. “Glomerular filtration rate measurement and estimation : improvement and validation of existing methods.” 2019. Web. 08 Mar 2021.
Vancouver:
Holness JL. Glomerular filtration rate measurement and estimation : improvement and validation of existing methods. [Internet] [Doctoral dissertation]. Stellenbosch University; 2019. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10019.1/107242.
Council of Science Editors:
Holness JL. Glomerular filtration rate measurement and estimation : improvement and validation of existing methods. [Doctoral Dissertation]. Stellenbosch University; 2019. Available from: http://hdl.handle.net/10019.1/107242
University of Pretoria
25.
Ngomane, L.N. (Lindokuhle
Matrue).
The impact of
indoor residual spraying (IRS) on malaria prevalence between 2001
and 2009 in Mpumalanga province, South Africa.
Degree: School of Health Systems and
Public Health (SHSPH), 2012, University of Pretoria
URL: http://hdl.handle.net/2263/24853
► Background Malaria remains a serious epidemic threat in the Lowveld region of Mpumalanga Province. In order to appropriately target interventions to achieve substantial reductions in…
(more)
▼ Background Malaria remains a serious epidemic threat in
the Lowveld region of Mpumalanga Province. In order to
appropriately target interventions to achieve substantial
reductions in malaria morbidity and mortality, there is a need to
assess the impact of current
control interventions such as indoor
residual spraying (IRS) for vector
control. This study aimed to
assess long-term changes in the burden of malaria in Mpumalanga
Province during the past eight years (2001-2009) and whether IRS
and climate variability had an effect on these changes. Methods All
malaria cases and deaths notified to the Malaria
Control Programme,
Department of Health was reviewed for the period 2001 to 2009. Data
were retrieved from the provincial Integrated Malaria Information
System (IMIS) database. Climate and population data were obtained
from the South Africa Weather Service and Statistics South Africa,
respectively. Descriptive statistics were computed to determine any
temporal changes in malaria morbidity and mortality. Autoregressive
integrated moving average (ARIMA) models were developed to assess
the effect of climatic factors on malaria. Results Within the
eight-year period of the study, a total of 35,191 cases and 164
deaths-attributed to malaria were notified in Mpumalanga Province.
There was a significant decrease in the incidence of malaria in
Mpumalanga Province from 385 in 2001/02 to 50 cases per 100,000
population in 2008/09 (P < 0.005). The overall incidence and
case fatality rates were 134 cases per 100,000 and 0.54%,
respectively. Malaria incidence and case fatality
rate by gender
showed significant differences, higher in males than in L.M.
Ngomane University of Pretoria, 2012 iv females (166.9 versus
106.4; P < 0.001; CFR 0.41% versus 0.55%). The incidence of
malaria increased from age 5-14 years (70), reaching a peak at age
25-34 years (190), declining thereafter (50 in those >65 years).
Mortality due to malaria was higher in those >65 years, the mean
CFR reaching a 2.1% peak. Almost half (47.8%) of the notified cases
originated from Mozambique and Mpumalanga Province itself
constituted 50.1%. The distribution of malaria varied across the
districts, highest in Ehlanzeni district (96.5%), lowest in
Nkangala (<1%) and Gert Sibande (<1%). A notable decline in
malaria case notification was observed following the increased IRS
coverage from 2006/07 to 2008/09 malaria seasons. A distinct
seasonal transmission pattern was found to be significantly related
to changes in rainfall patterns (P = 0.007). Conclusion Decades of
continuous IRS with insecticides have proved to be successful in
reducing the burden of malaria morbidity and mortality in
Mpumalanga Province between 2001 and 2009. A decline of above 50%
in malaria morbidity and mortality was observed following expanded
IRS coverage. These results highlight the need to continue with IRS
together with other
control strategies until interruption in local
malaria transmission is completely achieved and alternative vector
control strategies implemented. Efforts need to be…
Advisors/Committee Members: De Jager, Christiaan (advisor).
Subjects/Keywords: Vector
control;
Climate; Indoor
residual spraying; Case fatality
rate; Incidence
rate;
Mortality;
Prevalence;
Malaria;
Morbidity;
UCTD
Record Details
Similar Records
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Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ngomane, L. N. (. (2012). The impact of
indoor residual spraying (IRS) on malaria prevalence between 2001
and 2009 in Mpumalanga province, South Africa. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/24853
Chicago Manual of Style (16th Edition):
Ngomane, L N (Lindokuhle. “The impact of
indoor residual spraying (IRS) on malaria prevalence between 2001
and 2009 in Mpumalanga province, South Africa.” 2012. Masters Thesis, University of Pretoria. Accessed March 08, 2021.
http://hdl.handle.net/2263/24853.
MLA Handbook (7th Edition):
Ngomane, L N (Lindokuhle. “The impact of
indoor residual spraying (IRS) on malaria prevalence between 2001
and 2009 in Mpumalanga province, South Africa.” 2012. Web. 08 Mar 2021.
Vancouver:
Ngomane LN(. The impact of
indoor residual spraying (IRS) on malaria prevalence between 2001
and 2009 in Mpumalanga province, South Africa. [Internet] [Masters thesis]. University of Pretoria; 2012. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2263/24853.
Council of Science Editors:
Ngomane LN(. The impact of
indoor residual spraying (IRS) on malaria prevalence between 2001
and 2009 in Mpumalanga province, South Africa. [Masters Thesis]. University of Pretoria; 2012. Available from: http://hdl.handle.net/2263/24853
University of Windsor
26.
Li, Jianjun.
Algorithms & implementation of advanced video coding standards.
Degree: PhD, Electrical and Computer Engineering, 2010, University of Windsor
URL: https://scholar.uwindsor.ca/etd/8125
► Advanced video coding standards have become widely deployed coding techniques used in numerous products, such as broadcast, video conference, mobile television and blu-ray disc,…
(more)
▼ Advanced video coding standards have become widely deployed coding techniques used in numerous products, such as broadcast, video conference, mobile television and blu-ray disc, etc. New compression techniques are gradually included in video coding standards so that a 50% compression
rate reduction is achievable every five years. However, the trend also has brought many problems, such as, dramatically increased computational complexity, co-existing multiple standards and gradually increased development time. To solve the above problems, this thesis intends to investigate efficient algorithms for the latest video coding standard, H.264/AVC. Two aspects of H.264/AVC standard are inspected in this thesis: (1) Speeding up intra4x4 prediction with parallel architecture. (2) Applying an efficient
rate control algorithm based on deviation measure to intra frame. Another aim of this thesis is to work on low-complexity algorithms for MPEG-2 to H.264/AVC transcoder. Three main mapping algorithms and a computational complexity reduction algorithm are focused by this thesis: motion vector mapping, block mapping, field-frame mapping and efficient modes ranking algorithms. Finally, a new video coding framework methodology to reduce development time is examined. This thesis explores the implementation of MPEG-4 simple profile with the RVC framework. A key technique of automatically generating variable length decoder table is solved in this thesis. Moreover, another important video coding standard, DV/DVCPRO, is further modeled by RVC framework. Consequently, besides the available MPEG-4 simple profile and China audio/video standard, a new member is therefore added into the RVC framework family. A part of the research work presented in this thesis is targeted algorithms and implementation of video coding standards. In the wide topic, three main problems are investigated. The results show that the methodologies presented in this thesis are efficient and encouraged
Advisors/Committee Members: Abdel-Raheem, Esam.
Subjects/Keywords: Applied sciences; Compression rate; Rate control; Video coding
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APA ·
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MLA ·
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Manager
APA (6th Edition):
Li, J. (2010). Algorithms & implementation of advanced video coding standards. (Doctoral Dissertation). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/8125
Chicago Manual of Style (16th Edition):
Li, Jianjun. “Algorithms & implementation of advanced video coding standards.” 2010. Doctoral Dissertation, University of Windsor. Accessed March 08, 2021.
https://scholar.uwindsor.ca/etd/8125.
MLA Handbook (7th Edition):
Li, Jianjun. “Algorithms & implementation of advanced video coding standards.” 2010. Web. 08 Mar 2021.
Vancouver:
Li J. Algorithms & implementation of advanced video coding standards. [Internet] [Doctoral dissertation]. University of Windsor; 2010. [cited 2021 Mar 08].
Available from: https://scholar.uwindsor.ca/etd/8125.
Council of Science Editors:
Li J. Algorithms & implementation of advanced video coding standards. [Doctoral Dissertation]. University of Windsor; 2010. Available from: https://scholar.uwindsor.ca/etd/8125
Humboldt State University
27.
Winczura, Cassandra Lynde.
The relationship between resting heart rate variability and heart rate recovery from exercise in college-aged men.
Degree: MS, Kinesiology, 2014, Humboldt State University
URL: http://hdl.handle.net/2148/1905
► The primary aim of this study was to examine the relationship between resting heart rate variability (HRV) and heart rate recovery (HRR) from exercise with…
(more)
▼ The primary aim of this study was to examine the relationship between resting heart
rate variability (HRV) and heart
rate recovery (HRR) from exercise with a focus on a previously unstudied vagal index of HRR, T30. Participants were males aged 18 to 25 years (N = 23) of varying fitness levels. It was hypothesized that resting HRV would be significantly correlated with HRR. Resting HRV was measured for 5 minutes in the supine and seated positions and was assessed in the time (i.e., SDNN) and frequency (i.e., HF power, normalized HF power [HFnu], LF power, normalized LF power [LFnu], and LF:HF ratio) domains. Two indices of HRR, T30 (i.e., the negative reciprocal of the slope of the regression line of natural log of the HR data for 30 seconds after exercise) and delta 60 (i.e., HR at the end of exercise minus HR at 1 minute of recovery), were each assessed during a passive recovery following submaximal exercise tests on a cycle ergometer. A logarithmic transformation was applied to variables that violated normality. Pearson product correlations were used to assess the relationship between HRV and HRR measures. With the exception of a significant negative correlation between LogT30 and LogLF (supine) (r = -.45, p = .032) no other significant relationships were found between indices of HRV and HRR. Therefore, resting HRV may not be related to HRR from exercise. It is possible that HRV and HRR assess different aspects of autonomic
control. It is also possible that there is a physiologic ceiling in HRV and/or HRR due to fitness and/or training.
Advisors/Committee Members: Manos, Tina M..
Subjects/Keywords: Autonomic; Vagal; Parasympathetic; Heart rate recover; Heart rate; Parasympathetic; Variability; Heart rate control; College aged males; College aged men; Physical fitness; Exercise test; Cardiovascular
Record Details
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Winczura, C. L. (2014). The relationship between resting heart rate variability and heart rate recovery from exercise in college-aged men. (Masters Thesis). Humboldt State University. Retrieved from http://hdl.handle.net/2148/1905
Chicago Manual of Style (16th Edition):
Winczura, Cassandra Lynde. “The relationship between resting heart rate variability and heart rate recovery from exercise in college-aged men.” 2014. Masters Thesis, Humboldt State University. Accessed March 08, 2021.
http://hdl.handle.net/2148/1905.
MLA Handbook (7th Edition):
Winczura, Cassandra Lynde. “The relationship between resting heart rate variability and heart rate recovery from exercise in college-aged men.” 2014. Web. 08 Mar 2021.
Vancouver:
Winczura CL. The relationship between resting heart rate variability and heart rate recovery from exercise in college-aged men. [Internet] [Masters thesis]. Humboldt State University; 2014. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2148/1905.
Council of Science Editors:
Winczura CL. The relationship between resting heart rate variability and heart rate recovery from exercise in college-aged men. [Masters Thesis]. Humboldt State University; 2014. Available from: http://hdl.handle.net/2148/1905
28.
Fakir, Felipe [UNESP].
Controle preditivo multi-rate para eficiência energética em sistema de controle via rede sem fio.
Degree: 2017, Universidade Estadual Paulista
URL: http://hdl.handle.net/11449/150992
► A tecnologia de comunicação wireless vem se tornando parte fundamental do cotidiano das indústrias de processos, onde o uso de transmissores wireless aplicados à monitoração…
(more)
▼ A tecnologia de comunicação wireless vem se tornando parte fundamental do cotidiano das indústrias de processos, onde o uso de transmissores wireless aplicados à monitoração e controle já é uma realidade. A arquitetura de Sistema de Controle via Rede Sem Fio (WNCS) possui vantagens em relação às arquiteturas tradicionais ponto-a-ponto e às arquiteturas de redes cabeadas devido à facilidade de instalação, configuração e manutenção. No entanto, a evolução desta tecnologia introduziu novos desafios para a implementação da malha de controle fechada por um instrumento wireless como as não linearidades, perda de pacote de dados e restrições da comunicação de dados nas redes sem fio. Outro fator crítico relacionado à implementação de WNCSs é a fonte de energia limitada destes transmissores, que possuem vida útil dependente da quantidade de acessos e dados transmitidos. Este trabalho apresenta o estudo e o desenvolvimento de um controlador preditivo multi-rate como alternativa para melhorar a eficiência energética em aplicações industriais de WNCSs. A estratégia proposta não necessita receber constantemente os valores reais das variáveis do processo transmitidos pelos transmissores wireless, pois o controlador preditivo baseado em modelo (MPC) se utiliza do submodelo interno das variáveis de processo para estimar os valores das variáveis quando estas não são transmitidas. Dessa forma, uma diminuição da frequência de transmissão de dados na rede sem fio pode ser obtida e, consequentemente uma redução do consumo energético dos dispositivos sem fio. Resultados de simulações em diferentes condições de operação de um WNCS multivariável de controle de tanques acoplados demonstram que o MPC multi-rate possui características de robustez e é efetivo para aplicações de WNCS, garantindo requisitos de controle e estabilidade mesmo com a diminuição da frequência de transmissão de dados de realimentação na rede sem fio. Adicionalmente, resultados do consumo energético dos dispositivos do WNCS mostraram que o MPC multi-rate proporciona uma economia de energia de até 20% das baterias dos transmissores wireless. Uma análise da eficiência energética do WNCS é apresentada através do estudo dos limites operacionais do controlador MPC multi-rate considerando a relação de compromisso entre o período de amostragem dos dispositivos sem fio e o desempenho de controle do WNCS.
Wireless communication technology has become a fundamental part of the everyday life of process industries, where the use of wireless transmitters for monitoring and control is already a reality. The architecture of Wireless Networked Control Systems (WNCSs) has advantages over point-to-point and wired networks architectures due to the ease of installation, configuration and maintenance. However, the evolution of this technology has introduced new challenges to the implementation of the closed loop control with a wireless instrument as nonlinearities, packet losses and data communication constraints in the wireless networks. Another critical factor related to implementation…
Advisors/Committee Members: Godoy, Eduardo Paciência [UNESP], Universidade Estadual Paulista (UNESP).
Subjects/Keywords: Sistemas de controle via redes sem fio; Otimização energética; Model predictive controller; Controle multi-rate; Wireless networked control systems; Power optimization; Multi-rate control
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Fakir, F. [. (2017). Controle preditivo multi-rate para eficiência energética em sistema de controle via rede sem fio. (Thesis). Universidade Estadual Paulista. Retrieved from http://hdl.handle.net/11449/150992
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fakir, Felipe [UNESP]. “Controle preditivo multi-rate para eficiência energética em sistema de controle via rede sem fio.” 2017. Thesis, Universidade Estadual Paulista. Accessed March 08, 2021.
http://hdl.handle.net/11449/150992.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fakir, Felipe [UNESP]. “Controle preditivo multi-rate para eficiência energética em sistema de controle via rede sem fio.” 2017. Web. 08 Mar 2021.
Vancouver:
Fakir F[. Controle preditivo multi-rate para eficiência energética em sistema de controle via rede sem fio. [Internet] [Thesis]. Universidade Estadual Paulista; 2017. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11449/150992.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fakir F[. Controle preditivo multi-rate para eficiência energética em sistema de controle via rede sem fio. [Thesis]. Universidade Estadual Paulista; 2017. Available from: http://hdl.handle.net/11449/150992
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Université de Grenoble
29.
Guzman Gutierrez, Oswaldo.
Chronologie et dynamique de la formation des terrasses fluviales dans des chaînes des montagnes avec une surrection modéré : l'exemple du Vénézuéla et de l'Albanie : Timing and dynamics of river terraces formation in moderate uplifted ranges : the example of Venezuela and Albania.
Degree: Docteur es, Sciences de l'univers, 2013, Université de Grenoble
URL: http://www.theses.fr/2013GRENU017
► Cette recherche porte sur les interactions entre la tectonique, le climat et les processus géomorphologiques de la surface de la Terre à travers l'étude des…
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▼ Cette recherche porte sur les interactions entre la tectonique, le climat et les processus géomorphologiques de la surface de la Terre à travers l'étude des terrasses fluviales au Venezuela et l’Albanie. Ces deux domaines ont été soumis à une surrection modérée, aux variations climatiques du Quaternaire et fournissent un large registre de terrasses fluviales. Ces contextes donnent l’opportunité d’étudier la dynamique de la formation des terrasses fluviales à l'échelle de temps 102-105 ans. Ainsi, une approche morpho-chronologique a été appliquée afin de parvenir à une meilleure compréhension de cette dynamique dans les rivières du Venezuela et de l’Albanie.Dans le système des rivières Pueblo Llano et Santo Domingo situé sur le flanc sud-est des Andes de Mérida au Venezuela, douze terrasses fluviales ont été identifiées pour les derniers 200 ka. Les mesures des concentrations du 10Be réalisées sur les dépôts fluviatiles et glaciaires ont permis d'estimer l'âge d’exposition de sept terrasses et d’un complexe de moraines frontales. Un modèle dynamique de terrasses soutenues par ces datations et des données géomorphologiques, stratigraphiques et sédimentologiques, indique que la formation de terrasses est principalement contrôlée par des variations climatiques de haute fréquence (103 à 104 ans) qui induisent un déséquilibre entre capacité de transport de l'eau et apport des sédiments. Néanmoins, le type de réponse a été très lié à l'altitude du site et l'influence des glaciers en amont. En effet, dans la partie supérieure du système, la succession des phases d'aggradation et d’incision a été synchronisée avec la succession des périodes froides-sèches et chaudes-humides, tandis que la partie inférieure du système montre une tendance opposée. Basé sur la restauration temporelle du taux d'incision de la partie inférieure du système, un taux de surrection de 1.1 mm/an au cours des dernières 70 ka a été estimé pour le flanc sud-est des Andes de Mérida. En outre, l'identification et la datation d'un complexe de moraines frontales situé à l'altitude de 2300 m au dessus du niveau de la mer met en évidence le fait que l'avancée glaciaire au cours du Dernier Maximum Glaciaire, dans d'autres domaines des Andes de Mérida, pourrait également avoir atteint des élévations inférieures à celles déjà signalés entre 2900 et 3500 m au dessus du niveau de la mer.En Albanie, les six principales rivières ont été analysées. De nouvelles données géomorphologiques et géochronologiques ont été intégrées aux données publiées afin de proposer un cadre stratigraphique et chronologique homogène à l’échelle régional pour les derniers 200 ka. Sur la base de ce cadre, l’âge de la formation de onze terrasses fluviales régionales a été établi. En Albanie, les processus de formation des terrasses ont également été principalement contrôlés par des variations climatiques de haute fréquence (103 à 104 ans). Néanmoins, les résultats montrent également que la réponse géomorphologique du système fluvial était probablement modulée par la taille des bassins…
Advisors/Committee Members: Mugnier, Jean-Louis (thesis director).
Subjects/Keywords: Terrasses fluviales; Taux d’incision; Control climatique; Taux de surrection; Vénézuéla; Albanie; 10Be datation; River terraces; Incision rate; Climatic control; Uplift rate; Venezuela; Albania; 10Be dating
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APA (6th Edition):
Guzman Gutierrez, O. (2013). Chronologie et dynamique de la formation des terrasses fluviales dans des chaînes des montagnes avec une surrection modéré : l'exemple du Vénézuéla et de l'Albanie : Timing and dynamics of river terraces formation in moderate uplifted ranges : the example of Venezuela and Albania. (Doctoral Dissertation). Université de Grenoble. Retrieved from http://www.theses.fr/2013GRENU017
Chicago Manual of Style (16th Edition):
Guzman Gutierrez, Oswaldo. “Chronologie et dynamique de la formation des terrasses fluviales dans des chaînes des montagnes avec une surrection modéré : l'exemple du Vénézuéla et de l'Albanie : Timing and dynamics of river terraces formation in moderate uplifted ranges : the example of Venezuela and Albania.” 2013. Doctoral Dissertation, Université de Grenoble. Accessed March 08, 2021.
http://www.theses.fr/2013GRENU017.
MLA Handbook (7th Edition):
Guzman Gutierrez, Oswaldo. “Chronologie et dynamique de la formation des terrasses fluviales dans des chaînes des montagnes avec une surrection modéré : l'exemple du Vénézuéla et de l'Albanie : Timing and dynamics of river terraces formation in moderate uplifted ranges : the example of Venezuela and Albania.” 2013. Web. 08 Mar 2021.
Vancouver:
Guzman Gutierrez O. Chronologie et dynamique de la formation des terrasses fluviales dans des chaînes des montagnes avec une surrection modéré : l'exemple du Vénézuéla et de l'Albanie : Timing and dynamics of river terraces formation in moderate uplifted ranges : the example of Venezuela and Albania. [Internet] [Doctoral dissertation]. Université de Grenoble; 2013. [cited 2021 Mar 08].
Available from: http://www.theses.fr/2013GRENU017.
Council of Science Editors:
Guzman Gutierrez O. Chronologie et dynamique de la formation des terrasses fluviales dans des chaînes des montagnes avec une surrection modéré : l'exemple du Vénézuéla et de l'Albanie : Timing and dynamics of river terraces formation in moderate uplifted ranges : the example of Venezuela and Albania. [Doctoral Dissertation]. Université de Grenoble; 2013. Available from: http://www.theses.fr/2013GRENU017
Universitat Autònoma de Barcelona
30.
Esmaeili, Ali.
Advanced control techniques for the heart rate during treadmill exercise.
Degree: Departament de Telecomunicació i Enginyeria de Sistemes, 2019, Universitat Autònoma de Barcelona
URL: http://hdl.handle.net/10803/669563
► The objective of this work is to design a heart rate (HR) controller for a treadmill so that the HR of an individual running on…
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▼ The objective of this work is to design a heart
rate (HR) controller for a treadmill so that the HR of an individual running on it tracks a pre-specied, potentially time-varying profile specified by doctors for the cardiac recovery of the person. Initially, we consider a mathematical model relating the relationship between the speed of the treadmill and HR of the person running on it. An important issue in this model is the determination of its parameters. Thus, we first tackle the parameter estimation problem in this model which is formulated as an optimization one, that is solved through a heuristic technique known as Particle Swarm Optimization. This is the first time that this technique is used for the estimation of cardiac models and is a contribution of the thesis. Afterward, a super- twisting sliding mode controller is designed to perform the robust
control of treadmill’s speed in the presence of potential unmodelled dynamics and parametric uncertainties. Numerical examples show that the estimation procedure is able to obtain accurate values for the system’s parameters while the proposed
control approach is able to obtain zero tracking error without chattering, definitely achieving the
control objectives. In both cases, the range of treadmill’s speed goesfrom 2 to 14 km\/h, range that is not usually employed in previous studies. Finally, in the last part of this work, the objective is to design a discrete-time robust controller. Initially, a feedback linearization-based controller is designed, but it has poor robustness properties. In order to solve this problem, we propose another method consisting in the Joint parameter-state estimation based-
control. However, this approach does not identify the parameters and it offers some oscillations. To solve all of these problems and regarding the previous Chapter, we used the discrete-time sliding mode controller method to complete our study. In the first part of this Section, as designing a nonlinear model directly is hard, we decided to linearize the model and then discretize it. Furthermore, the continuous
control is generated by a zero-order hold (ZOH). On the other hand, since the nonlinear relationship describes a better relation between HR and speed, a nonlinear model is used in the last part of this thesis. The final and best controller is a discrete-time super-twisting system that avoids chattering and achieves very good robustness and tracking in the system. The great systematic procedure to design of the controller, the perfect tracking and the avoidance of using an observer for this system are other advantages of this approach. The simulation results in this work that presented in the speed range of 2-14 km, a range that is not usually employed in previous studies to the
control of the heart
rate during treadmill exercise.
Advisors/Committee Members: [email protected] (authoremail), true (authoremailshow), Ibeas Hernández, Asier (director).
Subjects/Keywords: Control de la freqüència cardíaca; Control de la frecuencia cardíaca; Heart rate control; Control lliscant super-twisting; Control deslizante super-twisting; Super-twisting sliding mode control; Control a temps discret; Control en tiempo discreto; Discrete-time control; Tecnologies; 621.3
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Record Details
Similar Records
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Esmaeili, A. (2019). Advanced control techniques for the heart rate during treadmill exercise. (Thesis). Universitat Autònoma de Barcelona. Retrieved from http://hdl.handle.net/10803/669563
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Esmaeili, Ali. “Advanced control techniques for the heart rate during treadmill exercise.” 2019. Thesis, Universitat Autònoma de Barcelona. Accessed March 08, 2021.
http://hdl.handle.net/10803/669563.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Esmaeili, Ali. “Advanced control techniques for the heart rate during treadmill exercise.” 2019. Web. 08 Mar 2021.
Vancouver:
Esmaeili A. Advanced control techniques for the heart rate during treadmill exercise. [Internet] [Thesis]. Universitat Autònoma de Barcelona; 2019. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10803/669563.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Esmaeili A. Advanced control techniques for the heart rate during treadmill exercise. [Thesis]. Universitat Autònoma de Barcelona; 2019. Available from: http://hdl.handle.net/10803/669563
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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Open Access Theses and Dissertations
