You searched for subject:(GLOBAL POSITIONING SYSTEM GPS INDOOR GPS GEOD SIE ).
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Oregon State University
1.
Weaver, Brian Jerald.
Hybrid Survey Networks : Combining Real-time and Static GNSS Observations for Optimizing Height Modernization.
Degree: MS, Civil Engineering, 2017, Oregon State University
URL: http://hdl.handle.net/1957/60332 
► To derive ellipsoid heights on passive marks with cm-level accuracy, many current specifications require the collection and adjustment of long-duration, static Global Navigation Satellite System…
(more)
▼ To derive ellipsoid heights on passive marks with cm-level accuracy, many current specifications require the collection and adjustment of long-duration, static
Global Navigation Satellite
System (GNSS) sessions. To increase efficiency, a survey procedure that includes real-time kinematic vectors from a real-time GNSS network (RTN) was evaluated. Thirty different “hybrid” networks involving three to nine Network RTK (NRTK) vectors per mark and some static GNSS vectors were developed from surveys completed in Oregon and South Carolina. The variance-covariance matrices of the static and kinematic vectors were scaled by variance component estimation procedures to produce realistic error estimates for stochastic modeling. After least squares adjustment and formal random error propagation of the networks, the resulting ellipsoid heights on the passive marks had network accuracies ranging from 0.6 to 3.6 cm (95% confidence). These network accuracies reduced to 2 cm when using six or more NRTK observations per mark. Further, the use of NRTK vectors obtained from both
GPS and GLONASS observables were, on average, 19.2% more accurate vertically than vectors obtained solely from
GPS observables.
Advisors/Committee Members: Gillins, Daniel T. (advisor), Olsen, Michael J. (committee member).
Subjects/Keywords: GPS leveling; Global Positioning System
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APA (6th Edition):
Weaver, B. J. (2017). Hybrid Survey Networks : Combining Real-time and Static GNSS Observations for Optimizing Height Modernization. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/60332
Chicago Manual of Style (16th Edition):
Weaver, Brian Jerald. “Hybrid Survey Networks : Combining Real-time and Static GNSS Observations for Optimizing Height Modernization.” 2017. Masters Thesis, Oregon State University. Accessed January 23, 2021.
http://hdl.handle.net/1957/60332.
MLA Handbook (7th Edition):
Weaver, Brian Jerald. “Hybrid Survey Networks : Combining Real-time and Static GNSS Observations for Optimizing Height Modernization.” 2017. Web. 23 Jan 2021.
Vancouver:
Weaver BJ. Hybrid Survey Networks : Combining Real-time and Static GNSS Observations for Optimizing Height Modernization. [Internet] [Masters thesis]. Oregon State University; 2017. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1957/60332.
Council of Science Editors:
Weaver BJ. Hybrid Survey Networks : Combining Real-time and Static GNSS Observations for Optimizing Height Modernization. [Masters Thesis]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/60332
2.
Azimi, Mehdi 1974-.
Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones.
Degree: 2012, Texas Digital Library
URL: http://hdl.handle.net/1969;
http://hdl.handle.net/2249.1/66510
► Rural two-lane highways constitute the majority of the road system in the United States. Over 62 percent of the Texas Department of Transportation (TxDOT) center…
(more)
▼ Rural two-lane highways constitute the majority of the road
system in the United States. Over 62 percent of the Texas Department of Transportation (TxDOT) center line highway miles are two-lane highways. No-passing zones, which are indicated by solid lines separating the traffic moving in opposite directions, tell drivers where there are segments of two-lane highways that do not have sufficient sight distance to safely perform passing maneuvers.
This study describes a method for automating the process for locating no-passing zones using
global positioning system (
GPS) data. The author developed a new analytical algorithm to evaluate three-dimensional passing sight distances that will work for any arbitrary alignment of two-lane highway. The algorithm was incorporated into a computer model that uses
GPS data as the input and results in the locations for no-passing zones. The steps involved in the process include collecting the
GPS data, converting it to a form that models the roadway center line, evaluating the availability of passing sight distance, and determining the locations where no-passing zone markings should be placed. The resulting automated
system processes
GPS coordinates and converts them into easting and northing values, smoothes
GPS data and evaluates roadway alignments for possible sight restrictions that indicate where no-passing zones should be located. The automated
system was tested on three highway segments using two different
GPS receivers, and the results obtained were in general agreement with the existing locations of no-passing zone markings. The verification results indicate that the algorithm and the computer program developed in this dissertation can be used to determine the availability of passing sight distance and locate no-passing zones.
Advisors/Committee Members: Hawkins, H. Gene (advisor).
Subjects/Keywords: Global Positioning System (GPS)
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APA (6th Edition):
Azimi, M. 1. (2012). Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66510
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):
Azimi, Mehdi 1974-. “Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones.” 2012. Thesis, Texas Digital Library. Accessed January 23, 2021.
http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Azimi, Mehdi 1974-. “Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones.” 2012. Web. 23 Jan 2021.
Vancouver:
Azimi M1. Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones. [Internet] [Thesis]. Texas Digital Library; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66510.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Azimi M1. Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones. [Thesis]. Texas Digital Library; 2012. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66510
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Illinois – Urbana-Champaign
3.
Chen, Derek.
Graphical SLAM for urban UAV navigation.
Degree: MS, Aerospace Engineering, 2017, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/99287
► In recent years, there has been rising interest in commercial applications of Unmanned Air Vehicles (UAVs). Examples of their usage include aerial photography, infrastructure inspection…
(more)
▼ In recent years, there has been rising interest in commercial applications of Unmanned Air Vehicles (UAVs). Examples of their usage include aerial photography, infrastructure inspection and emergency first response. For widespread commercial adoption of these applications to occur, UAV navigation must be made safe and reliable. In open-sky environments,
Global Positioning System (
GPS) receivers are most commonly used to provide accurate and globally referenced
positioning for UAVs. However, many applications, such as consumer product delivery, require UAVs to operate in densely populated urban environments. In these environments, buildings and structures reflect and block
GPS signals, leading to multipath and low satellite visibility. These factors create
GPS-challenged environments that result in large errors in UAV
positioning or make
GPS unavailable. To improve urban
GPS, one approach uses environment modeling such as 3D city models to mitigate the effects of multipath and NLOS errors. Others pair
GPS with odometry measurements from relative
positioning sensors, such as Light Detection and Ranging (LiDAR) sensors. LiDAR-based odometry provides an accurate relative navigation solution in
GPS-challenged environments, but requires distinguishable features in the surrounding environment and is susceptible to drift and biases. As a result, there is a need for sensor fusion techniques that can provide reliable and robust
positioning in urban environments.
In this thesis, we apply a Simultaneous Localization and Mapping (SLAM) approach to fuse
GPS pseudorange measurements with LiDAR point clouds and 3D building footprint data of the existing region, for UAV trajectory estimation and environment mapping. Our approach consists of three main aspects: graphical modeling, map-based processing, and inference.
First, we use a probabilistic graph, specifically a directed acyclic graph, to model the trajectory of a UAV. Nodes in the graph represent states of the UAV or
GPS satellites; while edges represent relations between states created by sensor measurements. We then use the graph to structure our environment maps. We represent our environment in two mapping formats: a point cloud map and an urban building map. The point cloud map is formulated by anchoring each collected LiDAR point cloud with their respective state. The result is a large point cloud collected throughout the trajectory of the UAV. The urban building map is a geometric representation of the large scale structures in the environment. It is first initialized with available sources of 3D building model data for the navigating region. In this work, we use Champaign building footprint data from the State of Illinois data portal. We then run plane fitting algorithms on the collected point clouds at each state to update the urban building map. As the UAV navigates, the graph is populated by additional nodes and corresponding LiDAR measurements, allowing for SLAM of the environment.
Next, we apply the formulated maps in two ways: mitigation of errors…
Advisors/Committee Members: Gao, Grace X (advisor).
Subjects/Keywords: Navigation; Global Positioning System (GPS)
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APA (6th Edition):
Chen, D. (2017). Graphical SLAM for urban UAV navigation. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/99287
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):
Chen, Derek. “Graphical SLAM for urban UAV navigation.” 2017. Thesis, University of Illinois – Urbana-Champaign. Accessed January 23, 2021.
http://hdl.handle.net/2142/99287.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chen, Derek. “Graphical SLAM for urban UAV navigation.” 2017. Web. 23 Jan 2021.
Vancouver:
Chen D. Graphical SLAM for urban UAV navigation. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2142/99287.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chen D. Graphical SLAM for urban UAV navigation. [Thesis]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/99287
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Cape Peninsula University of Technology
4.
Bayendang, Nganyang Paul.
Nano-satellite GPS receiver design and Implementation : a software-to-firmware approach
.
Degree: 2015, Cape Peninsula University of Technology
URL: http://etd.cput.ac.za/handle/20.500.11838/1176
► Space-borne GPS receivers designed for nano-satellites are faced with various challenges. This research is undertaken to address the problems of inefficiency and high-costs associated with…
(more)
▼ Space-borne GPS receivers designed for nano-satellites are faced with various challenges. This research is undertaken to address the problems of inefficiency and high-costs associated with space-borne GPS receivers. The problem of inefficiency relates to poor performances of the GPS receiver in terms of the algorithmic models, execution speed, memory usage and errors proness. The problem of high-costs relates to the spacegrade hardware cost, implementation complexity, development time, as well as the manufacturing, production and the testing processes involved.
The research objectives are to i) establish an efficient high-dynamics software-defined GPS receiver, ii) demonstrate a firmware approach and then iii) postulate a low-cost hardware implementation roadmap. The research methodology employed to address the problems and to attain the objectives is based-on using Matlab computing platform to i) implement a software-defined GPS receiver using free open-source GPS receiver algorithms, ii) further develop the software GPS receiver and lastly iii) convert the improved GPS receiver algorithms to firmware.
The GPS receiver was successfully implemented in Matlab floating-point algorithms with a ±100kHz Doppler search bins and was used to post-process a pre-captured real GPS L1 C/A signal dataset. The pre-captured GPS signal was acquired, tracked, decoded and post-processed to extract the navigation message; use to compute the GPS receiver position, UTC date and time.
Attempt to convert the entire Matlab floating-point GPS receiver algorithms to equivalent VHDL implementations failed; however, three of the Matlab floating-point algorithms (check_t.m, deg2dms.m and findUtmZone.m), were successfully converted to equivalent fixed-point formats in Matlab, Simulink and finally VHDL. These three algorithms, now created and optimised to fixed-point formats (efficient and enable implementation unto a low-cost microcontroller), set the basis for the firmware implementation. They were simulated and verified in Matlab, Simulink and VHDL using the Matlab HDL Coder workflow. Altera Quartus II software was then used to compile (synthesise, place & route and generate programming files) the three converted generic VHDL algorithms to embedded firmware, suitable for a FPGA programming.
The Matlab HDL Coder workflow used in this research is feasible and can be used to accurately design and implement an improved GPS receiver and furthermore achieve it in three equivalent algorithms. This conclusion was drawn and the proposed recommendations are to address the conversion issues in the other Matlab floating-point GPS receiver algorithms that failed in the conversion process and to further develop and implement the GPS receiver as a fully functional unit, based-on the Xilinx space-grade, radiation hardened and low-cost Virtex 5QV FPGA.
Subjects/Keywords: GPS receivers – Design;
Global Positioning System
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APA (6th Edition):
Bayendang, N. P. (2015). Nano-satellite GPS receiver design and Implementation : a software-to-firmware approach
. (Thesis). Cape Peninsula University of Technology. Retrieved from http://etd.cput.ac.za/handle/20.500.11838/1176
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):
Bayendang, Nganyang Paul. “Nano-satellite GPS receiver design and Implementation : a software-to-firmware approach
.” 2015. Thesis, Cape Peninsula University of Technology. Accessed January 23, 2021.
http://etd.cput.ac.za/handle/20.500.11838/1176.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bayendang, Nganyang Paul. “Nano-satellite GPS receiver design and Implementation : a software-to-firmware approach
.” 2015. Web. 23 Jan 2021.
Vancouver:
Bayendang NP. Nano-satellite GPS receiver design and Implementation : a software-to-firmware approach
. [Internet] [Thesis]. Cape Peninsula University of Technology; 2015. [cited 2021 Jan 23].
Available from: http://etd.cput.ac.za/handle/20.500.11838/1176.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bayendang NP. Nano-satellite GPS receiver design and Implementation : a software-to-firmware approach
. [Thesis]. Cape Peninsula University of Technology; 2015. Available from: http://etd.cput.ac.za/handle/20.500.11838/1176
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Ryerson University
5.
Joshi, Amit.
Performance evaluation of low-cost GPS systems for static and kinematic applications.
Degree: 2010, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A1695
► This thesis looks at improving positional accuracy of low-cost systems by investigating a method to isolate the multipath error based on wavelet analysis. Several sets…
(more)
▼ This thesis looks at improving positional accuracy of low-cost systems by investigating a method to isolate the multipath error based on wavelet analysis. Several sets of static and kinematic data were collected in different types of environment using a single-frequency
GPS receiver. The code minus carrier combination of the
GPS observables was exploited. After accounting for certain errors and resolving the ionospheric delay using ionospheric maps, the remaining terms were essentially multipath and noise. Wavelet analysis was then used to extract the multipath error. These approximations were utilized to identify and remove those satellites that were severely contaminated with multipath. Another approach investigated the subtraction of multipath approximations obtained by wavelet analysis from the corresponding code measurements. The
positioning results of these two approaches were compared with those of the original data and assessed. For the static data sets, eliminating satellites contaminated with multipath proved to be most effective. For the kinematic sessions, neither of the two approaches displayed any improvement.
Advisors/Committee Members: El-Rabbany, Ahmed (Thesis advisor), Ryerson University (Degree grantor).
Subjects/Keywords: GPS receivers; Global Positioning System; Wavelets (Mathematics)
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APA (6th Edition):
Joshi, A. (2010). Performance evaluation of low-cost GPS systems for static and kinematic applications. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A1695
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):
Joshi, Amit. “Performance evaluation of low-cost GPS systems for static and kinematic applications.” 2010. Thesis, Ryerson University. Accessed January 23, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A1695.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Joshi, Amit. “Performance evaluation of low-cost GPS systems for static and kinematic applications.” 2010. Web. 23 Jan 2021.
Vancouver:
Joshi A. Performance evaluation of low-cost GPS systems for static and kinematic applications. [Internet] [Thesis]. Ryerson University; 2010. [cited 2021 Jan 23].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1695.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Joshi A. Performance evaluation of low-cost GPS systems for static and kinematic applications. [Thesis]. Ryerson University; 2010. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A1695
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Illinois – Urbana-Champaign
6.
Pan, Chenji.
A smartphone-based energy saving navigation system.
Degree: MS, 0112, 2014, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/49752
► This thesis describes a smartphone-based vehicular GPS navigator by using an energy saving lo- cation sensing mode and it reduces navigation energy needs by more…
(more)
▼ This thesis describes a smartphone-based vehicular
GPS navigator by using an energy saving lo- cation sensing mode and it reduces navigation energy needs by more than an order of magnitude. The thesis will go over the theory and mode behind it and focus on the implementation details and the survey and user study we did during the research. Besides, the extensive work on combination between eNav and GreenGPS will also be covered in the thesis. Navigation applications be- comes the killer application with the popolarization of smartphone. However, navigation could be one of most energy consumption tasks in our smartphone since smartphone based
GPS navigation applications available in the markets set the highest
GPS sampling while working to guarantee the best quality of navigation. Nowadays, USB charging interface is available in most of cars and the drivers usually will keep the phone plugged-in during navigation to keep the phone have enough battery for other usages. But a charging cable may not be always available during trips, especially in hire cars or cars borrowed from friends. And according to a survey we conducted based on 500 respondents, more than 90% would like to have a energy-saving navigation application. So here we propose our eNav, a novel smartphone navigation application, which exploits phones’ local low-energy sensors like accelerometer and gyroscope to estimate the approximate location and only samples
GPS data when close to the way-points in the route. Our eNav
system has been implemented from scratch on Android and 33 drivers have tried it in our user study. Our evaluation shows that this approach increases battery life during navigation by more than 80%.
Advisors/Committee Members: Abdelzaher, Tarek F. (advisor).
Subjects/Keywords: Smartphone; Global Positioning System (GPS); Energy-saving
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APA (6th Edition):
Pan, C. (2014). A smartphone-based energy saving navigation system. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/49752
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):
Pan, Chenji. “A smartphone-based energy saving navigation system.” 2014. Thesis, University of Illinois – Urbana-Champaign. Accessed January 23, 2021.
http://hdl.handle.net/2142/49752.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pan, Chenji. “A smartphone-based energy saving navigation system.” 2014. Web. 23 Jan 2021.
Vancouver:
Pan C. A smartphone-based energy saving navigation system. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2014. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2142/49752.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pan C. A smartphone-based energy saving navigation system. [Thesis]. University of Illinois – Urbana-Champaign; 2014. Available from: http://hdl.handle.net/2142/49752
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Victoria University of Wellington
7.
Olds, Jonathan Paul Simon.
Small batteryless wireless solar powered GPS receivers for subcentimeter land deformation monitoring.
Degree: 2015, Victoria University of Wellington
URL: http://hdl.handle.net/10063/9073
► We design, implement, and validate a unique permanently deployed land deformation monitoring system using small (brick sized), cheap (approximately $100 USD), batteryless, solar powered singleband…
(more)
▼ We design, implement, and validate a unique permanently deployed land deformation monitoring
system using small (brick sized), cheap (approximately $100 USD), batteryless, solar powered singleband
GPS wireless sensor nodes. Both hardware and software were designed, implemented, and validated by us. Constraints by our hardware and application prompted us to design a unique distributed relative static
positioning algorithm designed for intermittent poor quality phase observable measurements, for sites with high multipath and high node densities requiring good solution accuracies; the static solutions were calculated on a daily basis. Our algorithm used a quarter of the bandwidth that would typically be required for an RF link used for a comparable application.
GPS on time was observed to vary greatly from as little as 0.5 hours a day in winter to over 8 hours a day and summer in one of our tests. Typical solution precision was 4 mm 2DRMS. Simulations predicted an undesirable slowly changing solution bias that would repeat every year.
Advisors/Committee Members: Seah, Winston.
Subjects/Keywords: GPS; Global Positioning System; Land deformation; Batteryless
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Manager
APA (6th Edition):
Olds, J. P. S. (2015). Small batteryless wireless solar powered GPS receivers for subcentimeter land deformation monitoring. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/9073
Chicago Manual of Style (16th Edition):
Olds, Jonathan Paul Simon. “Small batteryless wireless solar powered GPS receivers for subcentimeter land deformation monitoring.” 2015. Masters Thesis, Victoria University of Wellington. Accessed January 23, 2021.
http://hdl.handle.net/10063/9073.
MLA Handbook (7th Edition):
Olds, Jonathan Paul Simon. “Small batteryless wireless solar powered GPS receivers for subcentimeter land deformation monitoring.” 2015. Web. 23 Jan 2021.
Vancouver:
Olds JPS. Small batteryless wireless solar powered GPS receivers for subcentimeter land deformation monitoring. [Internet] [Masters thesis]. Victoria University of Wellington; 2015. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/10063/9073.
Council of Science Editors:
Olds JPS. Small batteryless wireless solar powered GPS receivers for subcentimeter land deformation monitoring. [Masters Thesis]. Victoria University of Wellington; 2015. Available from: http://hdl.handle.net/10063/9073
Reykjavík University
8.
Agnar Sveinsson 1972-.
INS/GPS Error Analysis and Integration
.
Degree: 2012, Reykjavík University
URL: http://hdl.handle.net/1946/12683
► Inertial navigation systems have been used in aviation for many years. These systems are independent and use acceleration and angular velocity measurements to calculate position.…
(more)
▼ Inertial navigation systems have been used in aviation for many years. These systems are independent and use acceleration and angular velocity measurements to calculate position. Due to the integrations of the navigation equations for the position and velocity the errors grow over time. To limit the growth of errors the GPS and INS can be used in an integrated solution, using Kalman filtering, to minimize the errors.
An INS and integrated INS/GPS error models are developed and implemented as well as a system solution from ADSE engineering and consulting firm, that is based on using GPS only for the navigation positions part. All the solutions are tested and compared in order to evaluate the difference in performance and find out which solution delivers the highest accuracy, or lowest errors.
Results show, both in stationary and navigation modes, that the integrated INS/GPS solution delivers a better accuracy than can be achieved from individual systems (INS or GPS). The ADSE system solution only reduces the GPS error mean value (about 5m). The response time is longer compared with INS. Based on this analysis the integrated INS/GPS solution is a better choice, regardless of implementation difficulty and cost.
Subjects/Keywords: Rafmagnsverkfræði;
GPS-mælingar;
Flugleiðsaga;
Hugbúnaður;
Staðsetningarkerfi;
Navigation;
INS (Inertial Navigation System);
GPS (Global positioning system)
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APA (6th Edition):
1972-, A. S. (2012). INS/GPS Error Analysis and Integration
. (Thesis). Reykjavík University. Retrieved from http://hdl.handle.net/1946/12683
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):
1972-, Agnar Sveinsson. “INS/GPS Error Analysis and Integration
.” 2012. Thesis, Reykjavík University. Accessed January 23, 2021.
http://hdl.handle.net/1946/12683.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
1972-, Agnar Sveinsson. “INS/GPS Error Analysis and Integration
.” 2012. Web. 23 Jan 2021.
Vancouver:
1972- AS. INS/GPS Error Analysis and Integration
. [Internet] [Thesis]. Reykjavík University; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1946/12683.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
1972- AS. INS/GPS Error Analysis and Integration
. [Thesis]. Reykjavík University; 2012. Available from: http://hdl.handle.net/1946/12683
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Addis Ababa University
9.
Teklebrhan, Aregawi.
GSM-R Network Design for ATP System of Addis Ababa-Djibouti route
.
Degree: 2015, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/7451
► Railway transport system hauls huge commodities and passengers from one location to another. Thereby, protection of the freight, passenger and the train itself from collisions…
(more)
▼ Railway transport
system hauls huge commodities and passengers from one location to another.
Thereby, protection of the freight, passenger and the train itself from collisions and hazards is the
pillar of railway
system. There have been plenty of methods created to solve train protection problem
all over the world so far. This thesis is also focused on solving protection problem in the route from
Addis Ababa to Djibouti border (Dewele).
Addis Ababa-Djibouti route has both single and double tracks, serves to both freight and passenger
trains. Moving Trains at this track have different speeds, passenger trains are relatively run at high
speed. Another problem within this track is head-on conflict of outward and inward running trains at
the single track. This situation needs an effective train control and protection
system in order to
protect train collision, increase route capacity and supply proper power distribution.
This thesis deals with designing proper, efficient and cost effective GSM-R radio coverage network
for automatic train protection (ATP)
system. Train detection mechanism is within
GPS system. This
work inspected the geographical and morphological nature of Addis Ababa-Djibouti (Dewele) route
in detail.
In this thesis the appropriate radio coverage is done depending on the real geographical nature of the
route. The data rate load and dimension of each train, whole line and other communication services
are calculated. This thesis has been using an appropriate path loss model to estimate the link budget
of the network. The appropriate path loss model is selected with MATLAB software simulation.
GSM-R radio network design parameters and appropriate algorithms are selected. Required
mathematical calculations and analysis are defined on this thesis work. Then, lastly the network
optimized with Atoll software.
Keywords: ,
Advisors/Committee Members: Dr. Yalemzewd Negash (advisor).
Subjects/Keywords: Automatic train protection (ATP);
GSM-R;
Global Positioning system (GPS)
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APA (6th Edition):
Teklebrhan, A. (2015). GSM-R Network Design for ATP System of Addis Ababa-Djibouti route
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/7451
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):
Teklebrhan, Aregawi. “GSM-R Network Design for ATP System of Addis Ababa-Djibouti route
.” 2015. Thesis, Addis Ababa University. Accessed January 23, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/7451.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Teklebrhan, Aregawi. “GSM-R Network Design for ATP System of Addis Ababa-Djibouti route
.” 2015. Web. 23 Jan 2021.
Vancouver:
Teklebrhan A. GSM-R Network Design for ATP System of Addis Ababa-Djibouti route
. [Internet] [Thesis]. Addis Ababa University; 2015. [cited 2021 Jan 23].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/7451.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Teklebrhan A. GSM-R Network Design for ATP System of Addis Ababa-Djibouti route
. [Thesis]. Addis Ababa University; 2015. Available from: http://etd.aau.edu.et/dspace/handle/123456789/7451
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Illinois – Urbana-Champaign
10.
Herting, Brian.
Analysis and design of electrically small, circularly polarized cylindrical microstrip antennas.
Degree: PhD, 1200, 2014, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/49783
► Small unmanned aerial system (UAS) and smart missile and munitions platforms rely on GPS for accurate position, velocity and time (PVT) information. These platforms have…
(more)
▼ Small unmanned aerial
system (UAS) and smart missile and munitions platforms rely on
GPS for accurate position, velocity and time (PVT) information. These platforms have significant aerodynamic and space constraints that require innovative conformal
GPS antenna solutions. Microstrip antennas are well suited for this type of application due to their inherently low profile package and ability to conform to the shape of a given platform. Since their inception over four decades ago, a significant body of literature has been compiled on the analysis of microstrip antennas. However, most of that research has focused on the development of analytical models and techniques for reducing the size, extending the bandwidth and achieving circular polarization for planar embodiments. Conformal microstrip antennas, on the other hand, have a much more limited body of literature spanning the last three decades. The conformal microstrip antenna literature has focused on the efficient analysis of the singly curved conformal microstrip antenna (SC-CMA), with most published results for single linear polarization and microstrip antennas that conform to cylinders with electrically large radii (i.e., kb > 1, where k is the free space propagation constant and b is the bend radius of the patch metal). This research expands the knowledge of the SC-CMA by investigating the use of a cylindrical rectangular microstrip antenna (CRMA) mounted on an electrically small radius (i.e., kb < 1) cylinder for the purpose of radiating a circularly polarized field.
A full-wave 3D analysis of the CRMA TM01 (axial) and TM10 (circumferential) modes was conducted in Ansys HFSS. It was discovered that the input impedance bandwidth of the CRMA TM01 mode more than doubled, while that of the TM10 mode remained virtually unchanged, as the cylinder radius was decreased from infinite, planar, to approximately 0.15 free space wavelengths. In addition, the resonant frequency of the CRMA TM10 mode steadily increased by 3 to 5 percent, while that of the TM01 mode remained virtually unchanged, as the cylinder radius was decreased to 0.15 free space wavelengths. The performance trends of the CRMA as a function of patch metal bend radius were incorporated into the planar microstrip transmission line model (TLM) through modification of the radiating slot normalized length and width.
The newly developed CRMA TLM and Ansys HFSS models were validated via measurement of a microstrip line edge fed CRMA. The input impedance bandwidth and resonant frequency of the models differed by less than 0.25% and 3.0%, respectively, from the measured results. The validated CRMA TLM and Ansys HFSS models were used to successfully design a circularly polarized CRMA
GPS antenna that met most of the requirements for a small munitions application.
Advisors/Committee Members: Bernhard, Jennifer T. (advisor), Bernhard, Jennifer T. (Committee Chair), Cangellaris, Andreas C. (committee member), Franke, Steven J. (committee member), Gong, Songbin (committee member).
Subjects/Keywords: Microstrip; Antennas; Conformal; Cylindrical; Global Positioning System (GPS)
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Export
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Manager
APA (6th Edition):
Herting, B. (2014). Analysis and design of electrically small, circularly polarized cylindrical microstrip antennas. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/49783
Chicago Manual of Style (16th Edition):
Herting, Brian. “Analysis and design of electrically small, circularly polarized cylindrical microstrip antennas.” 2014. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 23, 2021.
http://hdl.handle.net/2142/49783.
MLA Handbook (7th Edition):
Herting, Brian. “Analysis and design of electrically small, circularly polarized cylindrical microstrip antennas.” 2014. Web. 23 Jan 2021.
Vancouver:
Herting B. Analysis and design of electrically small, circularly polarized cylindrical microstrip antennas. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2014. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2142/49783.
Council of Science Editors:
Herting B. Analysis and design of electrically small, circularly polarized cylindrical microstrip antennas. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2014. Available from: http://hdl.handle.net/2142/49783
De Montfort University
11.
Binjammaz, Tareq.
Context-aware GPS integrity monitoring for Intelligent Transport Systems (ITS).
Degree: PhD, 2015, De Montfort University
URL: http://hdl.handle.net/2086/11397
► The integrity of positioning systems has become an increasingly important requirement for location-based Intelligent Transports Systems (ITS). The navigation systems, such as Global Positioning System…
(more)
▼ The integrity of positioning systems has become an increasingly important requirement for location-based Intelligent Transports Systems (ITS). The navigation systems, such as Global Positioning System (GPS), used in ITS cannot provide the high quality positioning information required by most services, due to the various type of errors from GPS sensor, such as signal outage, and atmospheric effects, all of which are difficult to measure, or from the map matching process. Consequently, an error in the positioning information or map matching process may lead to inaccurate determination of a vehicle’s location. Thus, the integrity is require when measuring both vehicle’s positioning and other related information such as speed, to locate the vehicle in the correct road segment, and avoid errors. The integrity algorithm for the navigation system should include a guarantee that the systems do not produce misleading or faulty information; as this may lead to a significant error arising in the ITS services. Hence, to achieve the integrity requirement a navigation system should have a robust mechanism, to notify the user of any potential errors in the navigation information. The main aim of this research is to develop a robust and reliable mechanism to support the positioning requirement of ITS services. This can be achieved by developing a high integrity GPS monitoring algorithm with the consideration of speed, based on the concept of context-awareness which can be applied with real time ITS services to adapt changes in the integrity status of the navigation system. Context-aware architecture is designed to collect contextual information about the vehicle, including location, speed and heading, reasoning about its integrity and reactions based on the information acquired. In this research, three phases of integrity checks are developed. These are, (i) positioning integrity, (ii) speed integrity, and (iii) map matching integrity. Each phase uses different techniques to examine the consistency of the GPS information. A receiver autonomous integrity monitoring (RAIM) algorithm is used to measure the quality of the GPS positioning data. GPS Doppler information is used to check the integrity of vehicle’s speed, adding a new layer of integrity and improving the performance of the map matching process. The final phase in the integrity algorithm is intended to verify the integrity of the map matching process. In this phase, fuzzy logic is also used to measure the integrity level, which guarantees the validity and integrity of the map matching results. This algorithm is implemented successfully, examined using real field data. In addition, a true reference vehicle is used to determine the reliability and validity of the output. The results show that the new integrity algorithm has the capability to support a various types of location-based ITS services.
Subjects/Keywords: 005.1; Global Positioning System (GPS); Intelligent Transports Systems (ITS); integrity
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APA (6th Edition):
Binjammaz, T. (2015). Context-aware GPS integrity monitoring for Intelligent Transport Systems (ITS). (Doctoral Dissertation). De Montfort University. Retrieved from http://hdl.handle.net/2086/11397
Chicago Manual of Style (16th Edition):
Binjammaz, Tareq. “Context-aware GPS integrity monitoring for Intelligent Transport Systems (ITS).” 2015. Doctoral Dissertation, De Montfort University. Accessed January 23, 2021.
http://hdl.handle.net/2086/11397.
MLA Handbook (7th Edition):
Binjammaz, Tareq. “Context-aware GPS integrity monitoring for Intelligent Transport Systems (ITS).” 2015. Web. 23 Jan 2021.
Vancouver:
Binjammaz T. Context-aware GPS integrity monitoring for Intelligent Transport Systems (ITS). [Internet] [Doctoral dissertation]. De Montfort University; 2015. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2086/11397.
Council of Science Editors:
Binjammaz T. Context-aware GPS integrity monitoring for Intelligent Transport Systems (ITS). [Doctoral Dissertation]. De Montfort University; 2015. Available from: http://hdl.handle.net/2086/11397
University of Sydney
12.
Cummins, Cloe Janine.
The Application Of Global Positioning Systems (GPS) and Microtechnology Sensors within Elite Rugby League
.
Degree: 2016, University of Sydney
URL: http://hdl.handle.net/2123/15244
► The application of microtechnology devices (Global Positioning Systems (GPS) and integrated triaxial accelerometers) has become common practice in team sports due to the ability to…
(more)
▼ The application of microtechnology devices (Global Positioning Systems (GPS) and integrated triaxial accelerometers) has become common practice in team sports due to the ability to provide objective information on the physiological requirements of match-play and training. The aims of this thesis were to review the literature examining the application of GPS technology in team sports; and utilise novel applications of GPS and integrated accelerometer technology in rugby league to quantify pre-season training loads, match collision forces and the energetic demands of match-play; as well as to examine positional group differences. GPS was used to measure training demands, video and accelerometer data were utilised to quantify collision forces, and energetic demands were estimated via a time-motion model from accelerometer data. The systematic review highlighted inconsistencies in movement demand classifications and the difficulties encountered in quantifying collisions/impacts. The four studies identified marked differences in positional specific demands throughout training and match-play. Pre-season training differences in various external load parameters were observed in drills where players trained within specific positions, whereas minimal differences were evident between positional groups within conditioning, generic skill and speed/agility drills. Outside backs as full-match players expended the most energy per match from increased running demands, but experienced the lowest collision demands, the majority of which arose from attacking play. Adjustables, also full-match players (apart from hookers who interchange), experienced elevated energy expenditure from increased anaerobic demands, however sustained reduced collision demands. As interchange players, hit-up and wide-running forwards expended the least energy (due to decreased running demands), but endured increased collision demands. Indeed, hit-up forwards performed five times more tackles per minute than outside backs and twice as many hit-ups per minute as adjustables. However, despite differences in total energy expenditure, the anaerobic work performed by the outside backs and wide-running forwards at high speed equates to a similar load on the metabolic system as the accelerated running patterns of adjustables and hit-up forwards. The differential positional demands identified indicate that position-specific conditioning drills are required to replicate the energetic and collision demands of match-play.
Subjects/Keywords: rugby league;
Global positioning system (GPS);
microtechnology;
collisions;
energetics;
metabolic power
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Manager
APA (6th Edition):
Cummins, C. J. (2016). The Application Of Global Positioning Systems (GPS) and Microtechnology Sensors within Elite Rugby League
. (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/15244
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):
Cummins, Cloe Janine. “The Application Of Global Positioning Systems (GPS) and Microtechnology Sensors within Elite Rugby League
.” 2016. Thesis, University of Sydney. Accessed January 23, 2021.
http://hdl.handle.net/2123/15244.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cummins, Cloe Janine. “The Application Of Global Positioning Systems (GPS) and Microtechnology Sensors within Elite Rugby League
.” 2016. Web. 23 Jan 2021.
Vancouver:
Cummins CJ. The Application Of Global Positioning Systems (GPS) and Microtechnology Sensors within Elite Rugby League
. [Internet] [Thesis]. University of Sydney; 2016. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2123/15244.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cummins CJ. The Application Of Global Positioning Systems (GPS) and Microtechnology Sensors within Elite Rugby League
. [Thesis]. University of Sydney; 2016. Available from: http://hdl.handle.net/2123/15244
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Texas – Austin
13.
Dahlke, Scott Raymond, 1965-.
Accuracy limitations of GPS surveying using mixed receiver types.
Degree: MSin Engineering, Aerospace Engineering, 1990, University of Texas – Austin
URL: http://dx.doi.org/10.26153/tsw/843
Subjects/Keywords: Global Positioning System; GPS receivers
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APA (6th Edition):
Dahlke, Scott Raymond, 1. (1990). Accuracy limitations of GPS surveying using mixed receiver types. (Masters Thesis). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/843
Chicago Manual of Style (16th Edition):
Dahlke, Scott Raymond, 1965-. “Accuracy limitations of GPS surveying using mixed receiver types.” 1990. Masters Thesis, University of Texas – Austin. Accessed January 23, 2021.
http://dx.doi.org/10.26153/tsw/843.
MLA Handbook (7th Edition):
Dahlke, Scott Raymond, 1965-. “Accuracy limitations of GPS surveying using mixed receiver types.” 1990. Web. 23 Jan 2021.
Vancouver:
Dahlke, Scott Raymond 1. Accuracy limitations of GPS surveying using mixed receiver types. [Internet] [Masters thesis]. University of Texas – Austin; 1990. [cited 2021 Jan 23].
Available from: http://dx.doi.org/10.26153/tsw/843.
Council of Science Editors:
Dahlke, Scott Raymond 1. Accuracy limitations of GPS surveying using mixed receiver types. [Masters Thesis]. University of Texas – Austin; 1990. Available from: http://dx.doi.org/10.26153/tsw/843
Curtin University of Technology
14.
Arora, Balwinder Singh.
Evaluation of ambiguity success rates based on multi-frequency GPS and Galileo
.
Degree: 2012, Curtin University of Technology
URL: http://hdl.handle.net/20.500.11937/500
► The precise positioning applications have long been carried out using dual frequency carrier phase and code observables from the Global Positioning System (GPS). The carrier…
(more)
▼ The precise positioning applications have long been carried out using dual frequency carrier phase and code observables from the Global Positioning System (GPS). The carrier phase observables are very precise in comparison to the code ones, the reason phase observables play an important role in precise geodetic applications. The carrier phase observables can have precision of about 3 millimeters. However the precision of the estimated parameter of interest, say the receiver position, depends upon the correct resolution of integer ambiguities present in the carrier phase observables. Significant contributions have been made in the last couple of decades towards integer ambiguity estimation to make precise positioning applications possible, using GPS carrier phase and code data from geodetic receivers.Precise positioning applications have been successful in the past, but at the cost of time taken to correctly resolve the integer ambiguities. This delay in integer ambiguity estimation is caused due to the presence of various propagation and hardware related effects present in the observables of GPS or in that case, any other Global Navigation System. The propagation errors related to the atmosphere are significant for medium to long baseline lengths. Among the atmospheric errors, the ionosphere is found to have profound effect on the process of integer ambiguity estimation. With the aid of permanent reference networks, corrections for ionosphere could be interpolated and further transferred to the user with an aim to enhance users ambiguity resolution and fulfill the aim of an efficient and reliable precise positioning.With the advancement of Global Navigation Satellite Systems (GNSS) several of the limiting factors which degrade users ambiguity resolution are seen to be met. The relatively poor precision of the code data in comparison to the phase data, is foreseen to improve for third GPS frequency, also called as GPS L5. Also most of the frequencies on Galileo system would have improved code precision.The ionosphere which has been a major blockade in fast integer ambiguity resolution, for long baseline lengths, would also benefit in a multi-frequency, multi-GNSS scenario. Since a GNSS model, in which the ionosphere is considered unknown and estimated, gains strength with addition of a frequency. The addition of L5 on GPS and availability of up to four frequencies on Galileo system would strengthen the GNSS model which would be beneficial when ionosphere is parameterized for estimation. This study aims at understanding the above mentioned and other possible benefits of the future GPS and Galileo system.The benefits that the future GPS and Galileo can bring to precise applications can be evaluated in terms of correct resolution of integer ambiguities present in the carrier phase data and further by understanding the contribution of the ambiguity resolution towards improvement of fixed-precision of the parameters of interest. The correct resolution of ambiguities was judged by computing the probability of correct…
Subjects/Keywords: multi-frequency;
Galileo system;
Global Navigation System;
Global Positioning System (GPS);
ambiguity success rates
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Arora, B. S. (2012). Evaluation of ambiguity success rates based on multi-frequency GPS and Galileo
. (Thesis). Curtin University of Technology. Retrieved from http://hdl.handle.net/20.500.11937/500
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):
Arora, Balwinder Singh. “Evaluation of ambiguity success rates based on multi-frequency GPS and Galileo
.” 2012. Thesis, Curtin University of Technology. Accessed January 23, 2021.
http://hdl.handle.net/20.500.11937/500.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Arora, Balwinder Singh. “Evaluation of ambiguity success rates based on multi-frequency GPS and Galileo
.” 2012. Web. 23 Jan 2021.
Vancouver:
Arora BS. Evaluation of ambiguity success rates based on multi-frequency GPS and Galileo
. [Internet] [Thesis]. Curtin University of Technology; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/20.500.11937/500.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Arora BS. Evaluation of ambiguity success rates based on multi-frequency GPS and Galileo
. [Thesis]. Curtin University of Technology; 2012. Available from: http://hdl.handle.net/20.500.11937/500
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
15.
Rafael Evangelista Pedro.
Respostas fisiológicas agudas e características cinemáticas de deslocamento em jogos com campo reduzido em futebol : efeito da inclusão planejada de sprints.
Degree: 2012, Universidade Estadual de Londrina
URL: http://www.bibliotecadigital.uel.br/document/?code=vtls000173228
► As respostas fisiológicas dos jogos com campo reduzido (JCRs) têm sido amplamente demonstradas. Em relação às características cinemáticas de deslocamento, os estudos têm demonstrado que…
(more)
▼ As respostas fisiológicas dos jogos com campo reduzido (JCRs) têm sido amplamente demonstradas. Em relação às características cinemáticas de deslocamento, os estudos têm demonstrado que os JCRs não simulam as demandas de esforço em alta intensidade e em sprints exigidas durante partidas de futebol. Dessa forma, existe a necessidade de propor alternativas para aumentar a demanda física durante JCRs. Sendo assim, os objetivos do estudo foram comparar as respostas fisiológicas agudas e as características cinemáticas de deslocamento entre dois modelos de JCRs (JCR convencional [JCRcon] e JCR modificado [JCRmod]) com as respostas registradas durante um jogo de futebol de campo e relacioná-las com a capacidade física e com o nível maturacional dos atletas. Métodos: A amostra foi composta por 15 jogadores de futebol da categoria sub-15 (14,3 ± 0,5 anos; 55,6 ± 7,1 kg; 1,66 ± 0,1 m). Os atletas realizaram Yo-Yo Intermittent Recovery Test Level 1 (YYIRTL1) e o teste de Repeated Sprint Ability (RSATeste), além de quatro sessões de JCRs (2 JCRcon e 2 JCRmod) e um jogo coletivo. Os JCRs foram realizados em dois formatos 3 vs 3 com mini gol e 7 vs 7 com gol com dimensões oficiais e com goleiros. Ambos os formatos foram realizados em 4 séries com duração de 4 min cada, com 3 min de recuperação passiva entre as séries. Durante os JCRmod os atletas realizaram quatro sprints em cada série, os quais foram escolhidos através de sorteio, com o intervalo entre cada sprint superior a 20 s. Frequência cardíaca (FC), concentração sanguínea de lactato ([La]) e percepção subjetiva de esforço (PSE) foram monitoradas em todas as sessões de treinamento. As características cinemáticas de deslocamento foram analisadas através de um
Global Positioning System (
GPS) com frequência de amostragem de 15 Hz. Resultados: A distância total percorrida e a distância percorrida em alta intensidade e em sprints foram significantemente superiores (P <0,05) nos JCRs 3 vs 3sp e 7 vs 7sp em relação aos JCRs 3 vs 3 e 7 vs 7. A distância percorrida em alta intensidade e o tempo despendido em sprint foram significantemente maiores (P <0,05) nos JCRmod e no jogo em relação ao JCRcon em ambos os formatos (3 vs 3 e 7 vs 7). Não houve diferença significante nas respostas fisiológicas entre os JCRs 3 vs 3 e 3 vs 3sp. Entretanto, a intensidade durante o JCR 7 vs 7sp foi significativamente superior (P <0,05) ao JCR 7 vs 7. Não houve correlações significantes (P >0,05) entre os testes de desempenho e as características cinemáticas durante as sessões de treinamento, no entanto, houve correlação positiva (P <0,05) entre a razão da idade esquelética pela idade cronológica (IE/IC) e a distância percorrida em sprint (>18,1 km.h-1) durante os JCRs 3 vs 3sp, 7 vs 7 e durante o jogo (r = 0,596; r = 0,605; r = 0,686, respectivamente) e correlação com a distância percorrida em alta intensidade (>13,1 km.h-1) no JCR 3 vs 3sp (r = 0,620). Dessa forma, conclui-se que a modificação na estrutura dos JCRs (JCRmod) ocasionou em uma maior demanda física nos atletas durante os JCRs (3 vs 3sp e…
Advisors/Committee Members: Fábio Yuzo Nakamura ., Fabiana Andrade Machado, Valmor Alberto Augusto Tricoli.
Subjects/Keywords: Futebol; Movimento (Fisiologia); Sistema de Posicionamento Global (GPS); Educação física; Football; Movement (Physiology); Global Positioning System (GPS); Physical education
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pedro, R. E. (2012). Respostas fisiológicas agudas e características cinemáticas de deslocamento em jogos com campo reduzido em futebol : efeito da inclusão planejada de sprints. (Thesis). Universidade Estadual de Londrina. Retrieved from http://www.bibliotecadigital.uel.br/document/?code=vtls000173228
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):
Pedro, Rafael Evangelista. “Respostas fisiológicas agudas e características cinemáticas de deslocamento em jogos com campo reduzido em futebol : efeito da inclusão planejada de sprints.” 2012. Thesis, Universidade Estadual de Londrina. Accessed January 23, 2021.
http://www.bibliotecadigital.uel.br/document/?code=vtls000173228.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pedro, Rafael Evangelista. “Respostas fisiológicas agudas e características cinemáticas de deslocamento em jogos com campo reduzido em futebol : efeito da inclusão planejada de sprints.” 2012. Web. 23 Jan 2021.
Vancouver:
Pedro RE. Respostas fisiológicas agudas e características cinemáticas de deslocamento em jogos com campo reduzido em futebol : efeito da inclusão planejada de sprints. [Internet] [Thesis]. Universidade Estadual de Londrina; 2012. [cited 2021 Jan 23].
Available from: http://www.bibliotecadigital.uel.br/document/?code=vtls000173228.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pedro RE. Respostas fisiológicas agudas e características cinemáticas de deslocamento em jogos com campo reduzido em futebol : efeito da inclusão planejada de sprints. [Thesis]. Universidade Estadual de Londrina; 2012. Available from: http://www.bibliotecadigital.uel.br/document/?code=vtls000173228
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
16.
Mahmud, Muhammad Umar.
Data quality assessment of nignet network.
Degree: 2012, RCAAP
URL: http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3423
► NIGNET is a network of Continuously Operating Reference Stations (CORS) of GNSS (Global Navigation Satellite Systems) stations established in 2009 by the Federal Government of…
(more)
▼ NIGNET is a network of Continuously Operating Reference Stations (CORS) of GNSS (
Global
Navigation Satellite Systems) stations established in 2009 by the Federal Government of Nigeria through the Office of the Surveyor General of the Federation (OSGoF), which is the office charged with the Surveying and Mapping in Nigeria. Presently, the network consists of twelve(12) stations established with a good geographic distribution.
The principal objective of this research project is to assess the data quality of NIGNET Network by processing the data and analysing the derived Time Series. This was done by evaluating the errors on the Time-Series and by computing the relative motions, using different plate tectonic models with respect to (w.r.t.) Nubia plate.
Advisors/Committee Members: Fernandes, Rui Manuel da Silva.
Subjects/Keywords: GPS (Global Positioning System); Sistemas de posicionamento global; Séries temporais – Modelos; Séries temporais – Aplicações
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APA (6th Edition):
Mahmud, M. U. (2012). Data quality assessment of nignet network. (Thesis). RCAAP. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3423
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):
Mahmud, Muhammad Umar. “Data quality assessment of nignet network.” 2012. Thesis, RCAAP. Accessed January 23, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3423.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mahmud, Muhammad Umar. “Data quality assessment of nignet network.” 2012. Web. 23 Jan 2021.
Vancouver:
Mahmud MU. Data quality assessment of nignet network. [Internet] [Thesis]. RCAAP; 2012. [cited 2021 Jan 23].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3423.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mahmud MU. Data quality assessment of nignet network. [Thesis]. RCAAP; 2012. Available from: http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3423
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
17.
Lima, Dário Manuel Bettencourt de.
Processamento GPS usando serviços online.
Degree: 2011, RCAAP
URL: http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3744
► Actualmente o sector de informações espaciais está a utilizar a Internet como uma ferramenta para ajudar as suas actividades. Devido aos custos elevados para adquirir…
(more)
▼ Actualmente o sector de informações espaciais está a utilizar a Internet como uma ferramenta para ajudar as suas actividades. Devido aos custos elevados para adquirir programas que sejam capazes de processar dados
GPS num curto espaço de tempo, utilizadores que estudam estes dados estão a utilizar ferramentas que existem na Internet e que são gratuitas para processar estes dados.
Com a procura de ferramentas na internet, organizações, seja no sector público ou
privado, estão a desenvolver, a promover e a prestar serviços e produtos que utilizam a
Internet como um meio. Estas páginas oferecem aos utilizadores informações sobre as
aplicações de
GPS, software e hardware de
GPS e serviços relacionados com
GPS. Por
esta razão, propõe-se então uma ferramenta capaz de utilizar estes serviços fornecidos
pela internet e tirar partido dos mesmos.
Advisors/Committee Members: Fernandes, Rui Manuel da Silva.
Subjects/Keywords: GPS (Global Positioning System); Coordenadas geodésicas; Coordenadas cartesianas; Sistemas de posicionamento global
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APA (6th Edition):
Lima, D. M. B. d. (2011). Processamento GPS usando serviços online. (Thesis). RCAAP. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3744
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):
Lima, Dário Manuel Bettencourt de. “Processamento GPS usando serviços online.” 2011. Thesis, RCAAP. Accessed January 23, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3744.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lima, Dário Manuel Bettencourt de. “Processamento GPS usando serviços online.” 2011. Web. 23 Jan 2021.
Vancouver:
Lima DMBd. Processamento GPS usando serviços online. [Internet] [Thesis]. RCAAP; 2011. [cited 2021 Jan 23].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3744.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lima DMBd. Processamento GPS usando serviços online. [Thesis]. RCAAP; 2011. Available from: http://www.rcaap.pt/detail.jsp?id=oai:ubibliorum.ubi.pt:10400.6/3744
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
ETH Zürich
18.
Montini, Lara.
Extraction of transportation information from combined position and accelerometer tracks.
Degree: 2016, ETH Zürich
URL: http://hdl.handle.net/20.500.11850/120639
► Travel surveys are increasingly taking advantage of global positioning system (GPS) data offering precise and objective route and time observations whilst potentially reducing response burden.…
(more)
▼ Travel surveys are increasingly taking advantage of
global positioning system (
GPS) data offering precise and objective route and time observations whilst potentially reducing response burden. However, there are still several open issues concerning the automated post-processing of these large datasets. Without a reliable post-processing,
GPS-based studies require either a considerable amount of manual analysis, leading to costly surveys or extensive prompted-recall interviews with the respondents. As part of this thesis a travel diary study was conducted in the Greater Zurich Area. 150 participants carried dedicated
GPS devices for up to one week and corrected their diaries in a web-based prompted recall tool. Using the resulting data set, the existing POSition DAta Processing framework was extended by a trip purpose module. Random forests, a machine learning technique, is used for classification. For trip purpose a share of correct predictions between 80 and 85 % is achieved for different setups. High variability in accuracy between persons is observed. Hence, personalisation strategies are tested. It is shown that the classifier is improved if it is learned on data that includes some of the participant?s annotations (median accuracy + 5.5 %). The updated processing tool, and also lessons learned from the
GPS survey in Zurich are tested in the PEACOX project, a joint project with many partners where a smartphone cross modal trip planner was developed that encourages ecological friendly behaviour.
GPS and accelerometer time series for 33 study participants in Vienna and Dublin are available for analysis; these were tracked simultaneously with smartphones and dedicated devices for 8 weeks. Therefore, further insight into the usefulness of smartphones and dedicated
GPS devices for collecting current travel survey data is gained. Meaningful diaries can be extracted from both data sources. However, if high resolution data is needed, results suggest that dedicated
GPS devices are still relevant; they have no battery issues, meaning that more data is recorded and that data quality is more stable. High resolution data is particularly interesting to observe taken routes. Two potential applications are shown here: route choice models are estimated for all travel modes (public transport, car, bicycle and walking) and parking search is shown to be hard to identify in our data.
Advisors/Committee Members: Bar-Gera, Hillel, Axhausen, Kay W., id_orcid0000-0003-3331-1318.
Subjects/Keywords: ZURICH, DISTRICT (CANTON OF ZURICH); FALLSTUDIEN (DOKUMENTENTYP); CASE STUDIES (DOCUMENT TYPE); TRANSPORT STATISTICS + TRAFFIC CENSUS (TRANSPORTATION AND TRAFFIC); GLOBAL POSITIONING SYSTEM, GPS + INDOOR GPS (GEODESY); GLOBAL POSITIONING SYSTEM, GPS + INDOOR GPS (GEODÄSIE); ZIELFÜHRUNG + WEGWEISUNG (VERKEHR UND TRANSPORT); ROUTE GUIDANCE (TRANSPORTATION AND TRAFFIC); VERKEHRSSTATISTIK + VERKEHRSZÄHLUNG (VERKEHR UND TRANSPORT); STATISTICAL DATA HANDLING (MATHEMATICAL STATISTICS); ZÜRICH, BEZIRK (KANTON ZÜRICH); VERARBEITUNG UND AUSWERTUNG STATISTISCHER DATEN (MATHEMATISCHE STATISTIK); info:eu-repo/classification/ddc/624; info:eu-repo/classification/ddc/380; Civil engineering; Commerce, communications, transport
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Manager
APA (6th Edition):
Montini, L. (2016). Extraction of transportation information from combined position and accelerometer tracks. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/120639
Chicago Manual of Style (16th Edition):
Montini, Lara. “Extraction of transportation information from combined position and accelerometer tracks.” 2016. Doctoral Dissertation, ETH Zürich. Accessed January 23, 2021.
http://hdl.handle.net/20.500.11850/120639.
MLA Handbook (7th Edition):
Montini, Lara. “Extraction of transportation information from combined position and accelerometer tracks.” 2016. Web. 23 Jan 2021.
Vancouver:
Montini L. Extraction of transportation information from combined position and accelerometer tracks. [Internet] [Doctoral dissertation]. ETH Zürich; 2016. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/20.500.11850/120639.
Council of Science Editors:
Montini L. Extraction of transportation information from combined position and accelerometer tracks. [Doctoral Dissertation]. ETH Zürich; 2016. Available from: http://hdl.handle.net/20.500.11850/120639
University of Minnesota
19.
Jackson, John.
Real-time Kinematic Positioning: Background, Assessment and Forecasting.
Degree: MS, Aerospace Engineering and Mechanics, 2018, University of Minnesota
URL: http://hdl.handle.net/11299/200136
► This thesis presents an introduction and work performed related to real-time kinematic (RTK) positioning. RTK positioning is a differential positioning method that uses signals from…
(more)
▼ This thesis presents an introduction and work performed related to real-time kinematic (RTK) positioning. RTK positioning is a differential positioning method that uses signals from global navigation satellite systems (GNSS). Position solutions using RTK methods have a nominal accuracy on the order of centimeters and are available in real-time, making them useful for such applications as autonomous vehicles and mobile robotics, driver-assist technologies, and precise geospatial data collection. First, a background on positioning using GNSS and RTK methods is presented. Next, an assessment of low-cost RTK receivers for the Minnesota Department of Transportation is described. Several low-cost RTK-capable receivers were assessed using metrics related to accuracy, availability, continuity and ini- tialization in different environments during static and dynamic tests. The low-cost mul- tifrequency receiver tested performed more consistently than the single-frequency low-cost receivers, especially for the dynamic tests. Of the low-cost single frequency receivers, there is a wide range in performance metrics. In addition, a multi-thousand dollar receiver was tested and outperformed all of the low-cost receivers in all environments. Finally, a fore- casting method using recurrent neural networks is explored to increase the robustness of RTK positioning. The methodology presented here was unable to create a reliable RTK solution, but suggestions are offered for future work. The goal of this thesis is to familiarize the reader with the basic premise of RTK positioning and educate them on the capabilities of low-cost receivers.
Subjects/Keywords: Global Navigation Satellite System (GNSS); Global Positioning System (GPS); Low-Cost RTK; Machine Learning; Navigation; Positioning
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Manager
APA (6th Edition):
Jackson, J. (2018). Real-time Kinematic Positioning: Background, Assessment and Forecasting. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/200136
Chicago Manual of Style (16th Edition):
Jackson, John. “Real-time Kinematic Positioning: Background, Assessment and Forecasting.” 2018. Masters Thesis, University of Minnesota. Accessed January 23, 2021.
http://hdl.handle.net/11299/200136.
MLA Handbook (7th Edition):
Jackson, John. “Real-time Kinematic Positioning: Background, Assessment and Forecasting.” 2018. Web. 23 Jan 2021.
Vancouver:
Jackson J. Real-time Kinematic Positioning: Background, Assessment and Forecasting. [Internet] [Masters thesis]. University of Minnesota; 2018. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/11299/200136.
Council of Science Editors:
Jackson J. Real-time Kinematic Positioning: Background, Assessment and Forecasting. [Masters Thesis]. University of Minnesota; 2018. Available from: http://hdl.handle.net/11299/200136
Brno University of Technology
20.
Zavadil, Miloš.
Monitorování polohy s pomocí GPS/GSM modemu: Position monitoring with the help of GPS/GSM modem.
Degree: 2018, Brno University of Technology
URL: http://hdl.handle.net/11012/10480
► The first chapter of bachelor thesis is focused on theoretical explanation of the most important terms in Global Positioning System describing basic principles and position…
(more)
▼ The first chapter of bachelor thesis is focused on theoretical explanation of the most important terms in
Global Positioning System describing basic principles and position monitoring possibilities. The structure of the whole
GPS system and its position setting accuracy is described further. The NMEA protocol used for transferring
GPS information is shortly mentioned too. The second chapter deals with Open AT platform used for application development. It is a product of Wavecom company. The third thematic unit has already practical character. It shows the results of locating GenLoc25 modem by AT commands and decoding NMEA frame. Three variants of applications developed in Microsoft Visual C++ are described in the last chapter. All of them are used for position monitoring with
GPS/GSM modem. The first program has the same functionality as the modem locating by AT commands. It is only for visualization of
GPS information in Terminal window. The second application we can consider as the most important in this thesis. It contains all the items from the assignment. Actual data position is automatically sent to FTP server by GPRS transmission. The data are stored on this server. Received data are visualized in web browser by PHP script which is stored on server too. Final application is derived from the second one. The algorithm assumes that data are not sent to server regularly but transmission depends on human factor.
Advisors/Committee Members: Šilhavý, Pavel (advisor), Vyoral, Josef (referee).
Subjects/Keywords: Global Positioning system; GPS; Open AT; určení polohy; modem; Wavecom; AT příkaz; Global Positioning System; GPS; Open AT; position monitoring; modem; Wavecom; AT command
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Manager
APA (6th Edition):
Zavadil, M. (2018). Monitorování polohy s pomocí GPS/GSM modemu: Position monitoring with the help of GPS/GSM modem. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/10480
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):
Zavadil, Miloš. “Monitorování polohy s pomocí GPS/GSM modemu: Position monitoring with the help of GPS/GSM modem.” 2018. Thesis, Brno University of Technology. Accessed January 23, 2021.
http://hdl.handle.net/11012/10480.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zavadil, Miloš. “Monitorování polohy s pomocí GPS/GSM modemu: Position monitoring with the help of GPS/GSM modem.” 2018. Web. 23 Jan 2021.
Vancouver:
Zavadil M. Monitorování polohy s pomocí GPS/GSM modemu: Position monitoring with the help of GPS/GSM modem. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/11012/10480.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zavadil M. Monitorování polohy s pomocí GPS/GSM modemu: Position monitoring with the help of GPS/GSM modem. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/10480
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Ryerson University
21.
Yousif, Hamad.
Prediction of High Rate GPS Satellite Orbit Using Artificial Neural Networks.
Degree: 2007, Ryerson University
URL: https://digital.library.ryerson.ca/islandora/object/RULA%3A847
► Precise real-time GPS orbit at a high rate is required for a number of applications, including real-time Precise Point Positioning (PPP), long range RTK and…
(more)
▼ Precise real-time
GPS orbit at a high rate is required for a number of applications, including real-time Precise Point
Positioning (PPP), long range RTK and weather forecasts. To support these applications, the International GNSS Service (IGS) has developed a precise orbital service. At present, users may take advantage of the predicted part of the IGS ultra-rapid orbit for real-time and near real-time applications. Unfortunately, however the data rate of such precise orbits is usually limited to 15 minutes. In addition, the precision of the predicted part of the IGS ultrarapid orbit is limited to about 10 cm. for the 24-hour predicted part, which may not be sufficient for the above applications, This research proposes algorithms for interpolation and prediction methods that are intended to reduce the effect of such limitations.This research examines the performance of four interpolation methods for IGS precise
GPS orbits, nameley Lagrange, Newton Divided Difference, Bernese Polynomial, Cubic Spline and Trigonometric Interpolation. In addition, a comparison between this research and earlier studies were conducted. A new approach that utilizes the residuals between the broadcast and precise ephemeris to generate a high-density precise ephemeris is also introduced in this research.A three-step neural network-based model is then developed in this research to generate a 6-hour predicted orbital arc. First, an initial predicted orbit is generated by extrapolating a concentrated group of previous precise ephemeris for 5 days.
GPS observations for 35 globally distributed tracking stations, corresponding to the 24-hour period preceding the predicted part, are then utilized within the Bernese software to further enhance the predicted orbit. FInally, the predicted orbit is refined by implementing a modular - three-layer feed-forward back-propagation neural network. A comparison is made between our predicted orbit and the IGS ultra-rapid orbit to verify the efficiency of the newly developed neural network-based model. It is shown that the newly developed neural network-based model improved the orbit prediction by 47%, 22% and 37% for three randomly selected satellites from Blocks IIA, IIR and IIR-M respectively.
Advisors/Committee Members: El-Rabbany, Ahmed (Thesis advisor), Ryerson University (Degree grantor).
Subjects/Keywords: Neural networks; GPS; Global Positioning System
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APA (6th Edition):
Yousif, H. (2007). Prediction of High Rate GPS Satellite Orbit Using Artificial Neural Networks. (Thesis). Ryerson University. Retrieved from https://digital.library.ryerson.ca/islandora/object/RULA%3A847
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):
Yousif, Hamad. “Prediction of High Rate GPS Satellite Orbit Using Artificial Neural Networks.” 2007. Thesis, Ryerson University. Accessed January 23, 2021.
https://digital.library.ryerson.ca/islandora/object/RULA%3A847.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yousif, Hamad. “Prediction of High Rate GPS Satellite Orbit Using Artificial Neural Networks.” 2007. Web. 23 Jan 2021.
Vancouver:
Yousif H. Prediction of High Rate GPS Satellite Orbit Using Artificial Neural Networks. [Internet] [Thesis]. Ryerson University; 2007. [cited 2021 Jan 23].
Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A847.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yousif H. Prediction of High Rate GPS Satellite Orbit Using Artificial Neural Networks. [Thesis]. Ryerson University; 2007. Available from: https://digital.library.ryerson.ca/islandora/object/RULA%3A847
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Minnesota
22.
Carrion, Carlos.
Value of reliability: actual commute experience revealed
preference approach.
Degree: MS, Civil Engineering, 2010, University of Minnesota
URL: http://purl.umn.edu/93565
► University of Minnesota M.S. thesis. July 2010. Major: Civil Engineering. Advisor: David M. Levinson. 1 computer file (PDF); vi, 79 pages, appendix pages 71-79. Ill.…
(more)
▼ University of Minnesota M.S. thesis. July 2010.
Major: Civil Engineering. Advisor: David M. Levinson. 1 computer
file (PDF); vi, 79 pages, appendix pages 71-79. Ill. (some
col.)
This research investigates the value placed by
travelers on HOT lanes because of improve- ments in travel time
reliability. This value depends on how the travelers regard a route
with predictable travel times (or small travel time variability) in
comparison to another with unpredictable travel times (or high
travel time variability). For this purpose, com- muters were
recruited and equipped with Global Positioning System (GPS) devices
and instructed to commute for two weeks on each of three plausible
alternatives between their home in the western suburbs of
Minneapolis eastbound to work in downtown or the Univer- sity of
Minnesota: I-394 HOT lanes, I-394 General Purpose lanes (untolled),
and signalized arterials close to the I-394 corridor. They were
then given the opportunity to travel on their preferred route after
experiencing each alternative. This revealed preference data was
then analyzed using mixed logit route choice models. Three measures
of reliability were explored and incorporated in the estimation of
the models: standard deviation (a classical measure in the research
literature); shortened right range (typically found in departure
time choice models); and interquartile range (75th - 25th
percentile). Each of these measures repre- sents distinct ways
about how travelers deal with dierent sections of reliability. In
all the models, it was found that reliability was valued highly
(and statistically signicantly), but dierently according to how it
was dened. The estimated value of reliability in each of the models
indicates that commuters are willing to pay a fee for a reliable
route depending on how they value their reliability savings.
Furthermore, a meta-analysis is performed in order to explain the
dierences across valuation ratio estimates across studies. The
results indi- cate dierences are signicant across regions, choice
dimension (e.g. mode choice), travel time unit (e.g. data collected
at AM or PM), and year of study.
Advisors/Committee Members: David M. Levinson.
Subjects/Keywords: Travel time reliability; HOT lanes; Global Positioning System (GPS); Preferred route; Commuters; Civil Engineering
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Manager
APA (6th Edition):
Carrion, C. (2010). Value of reliability: actual commute experience revealed
preference approach. (Masters Thesis). University of Minnesota. Retrieved from http://purl.umn.edu/93565
Chicago Manual of Style (16th Edition):
Carrion, Carlos. “Value of reliability: actual commute experience revealed
preference approach.” 2010. Masters Thesis, University of Minnesota. Accessed January 23, 2021.
http://purl.umn.edu/93565.
MLA Handbook (7th Edition):
Carrion, Carlos. “Value of reliability: actual commute experience revealed
preference approach.” 2010. Web. 23 Jan 2021.
Vancouver:
Carrion C. Value of reliability: actual commute experience revealed
preference approach. [Internet] [Masters thesis]. University of Minnesota; 2010. [cited 2021 Jan 23].
Available from: http://purl.umn.edu/93565.
Council of Science Editors:
Carrion C. Value of reliability: actual commute experience revealed
preference approach. [Masters Thesis]. University of Minnesota; 2010. Available from: http://purl.umn.edu/93565
Universidade do Porto
23.
Cova, Miguel Jorge Pereira.
Global localization of vertical road signs using a car equipped with a stereo vision system and GPS.
Degree: 2011, Universidade do Porto
URL: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/62092
Subjects/Keywords: Sinais de trânsito; Deteção de sinais de trânsito; GPS - Global Positioning System
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Manager
APA (6th Edition):
Cova, M. J. P. (2011). Global localization of vertical road signs using a car equipped with a stereo vision system and GPS. (Thesis). Universidade do Porto. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/62092
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):
Cova, Miguel Jorge Pereira. “Global localization of vertical road signs using a car equipped with a stereo vision system and GPS.” 2011. Thesis, Universidade do Porto. Accessed January 23, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/62092.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Cova, Miguel Jorge Pereira. “Global localization of vertical road signs using a car equipped with a stereo vision system and GPS.” 2011. Web. 23 Jan 2021.
Vancouver:
Cova MJP. Global localization of vertical road signs using a car equipped with a stereo vision system and GPS. [Internet] [Thesis]. Universidade do Porto; 2011. [cited 2021 Jan 23].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/62092.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Cova MJP. Global localization of vertical road signs using a car equipped with a stereo vision system and GPS. [Thesis]. Universidade do Porto; 2011. Available from: http://www.rcaap.pt/detail.jsp?id=oai:repositorio-aberto.up.pt:10216/62092
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
24.
Azimi, Mehdi 1974-.
Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones.
Degree: PhD, Civil Engineering, 2012, Texas A&M University
URL: http://hdl.handle.net/1969.1/151617
► Rural two-lane highways constitute the majority of the road system in the United States. Over 62 percent of the Texas Department of Transportation (TxDOT) center…
(more)
▼ Rural two-lane highways constitute the majority of the road
system in the United States. Over 62 percent of the Texas Department of Transportation (TxDOT) center line highway miles are two-lane highways. No-passing zones, which are indicated by solid lines separating the traffic moving in opposite directions, tell drivers where there are segments of two-lane highways that do not have sufficient sight distance to safely perform passing maneuvers.
This study describes a method for automating the process for locating no-passing zones using
global positioning system (
GPS) data. The author developed a new analytical algorithm to evaluate three-dimensional passing sight distances that will work for any arbitrary alignment of two-lane highway. The algorithm was incorporated into a computer model that uses
GPS data as the input and results in the locations for no-passing zones. The steps involved in the process include collecting the
GPS data, converting it to a form that models the roadway center line, evaluating the availability of passing sight distance, and determining the locations where no-passing zone markings should be placed. The resulting automated
system processes
GPS coordinates and converts them into easting and northing values, smoothes
GPS data and evaluates roadway alignments for possible sight restrictions that indicate where no-passing zones should be located. The automated
system was tested on three highway segments using two different
GPS receivers, and the results obtained were in general agreement with the existing locations of no-passing zone markings. The verification results indicate that the algorithm and the computer program developed in this dissertation can be used to determine the availability of passing sight distance and locate no-passing zones.
Advisors/Committee Members: Hawkins, H. Gene (advisor), Lord, Dominique (committee member), Zhang, Yunlong (committee member), Feagin, Russell (committee member).
Subjects/Keywords: Global Positioning System (GPS); Two-lane highway; No-passing zone; Three-dimensional sight distance
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APA (6th Edition):
Azimi, M. 1. (2012). Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/151617
Chicago Manual of Style (16th Edition):
Azimi, Mehdi 1974-. “Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones.” 2012. Doctoral Dissertation, Texas A&M University. Accessed January 23, 2021.
http://hdl.handle.net/1969.1/151617.
MLA Handbook (7th Edition):
Azimi, Mehdi 1974-. “Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones.” 2012. Web. 23 Jan 2021.
Vancouver:
Azimi M1. Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones. [Internet] [Doctoral dissertation]. Texas A&M University; 2012. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/1969.1/151617.
Council of Science Editors:
Azimi M1. Theoretical Examination of Passing Sight Distance in Three Dimensions with Application to Marking No-Passing Zones. [Doctoral Dissertation]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/151617
Penn State University
25.
Boehmer, Tyler J.
Design and Verification of a Low-Power GPS-Disciplined Oscillator For Use In Distributed Sensor Arrays.
Degree: 2013, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/18742
► The geoPebble system being developed at The Pennsylvania State University is a distributed wireless sensor network that requires high timing accuracy with low power consumption.…
(more)
▼ The geoPebble
system being developed at The Pennsylvania State University is a distributed wireless sensor network that requires high timing accuracy with low power consumption. Although chip-scale atomic clocks have advanced significantly, cost continues to be prohibitive.
GPS signals are commonly used to discipline ovenized oscillators in order for the local oscillator to inherit the long term stability of
GPS timing; however, commercially available
GPS-disciplined oscillators (GPSDOs) use ovenized oscillators and take an extended period of time to reach their stated accuracy, resulting in a large power consumption of over a watt. This has limited their adoption in low-power applications, as well as low-cost applications. Modern temperature-compensated crystal oscillators have advanced to a stability that enables the possibility of duty cycling a
GPS receiver and intermittently correcting the oscillator for drift. A GPSDO is presented that achieves an accuracy of 5~μs~RMS in its operational environment, while consuming only 45~mW of average power.
Advisors/Committee Members: Sven G Bilen, Thesis Advisor/Co-Advisor.
Subjects/Keywords: GPS; disciplined; oscillator; global; positioning; system; clock; low; power; distributed; sensor; array; network; reflectometry
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Boehmer, T. J. (2013). Design and Verification of a Low-Power GPS-Disciplined Oscillator For Use In Distributed Sensor Arrays. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/18742
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):
Boehmer, Tyler J. “Design and Verification of a Low-Power GPS-Disciplined Oscillator For Use In Distributed Sensor Arrays.” 2013. Thesis, Penn State University. Accessed January 23, 2021.
https://submit-etda.libraries.psu.edu/catalog/18742.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Boehmer, Tyler J. “Design and Verification of a Low-Power GPS-Disciplined Oscillator For Use In Distributed Sensor Arrays.” 2013. Web. 23 Jan 2021.
Vancouver:
Boehmer TJ. Design and Verification of a Low-Power GPS-Disciplined Oscillator For Use In Distributed Sensor Arrays. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Jan 23].
Available from: https://submit-etda.libraries.psu.edu/catalog/18742.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Boehmer TJ. Design and Verification of a Low-Power GPS-Disciplined Oscillator For Use In Distributed Sensor Arrays. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/18742
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade Nova
26.
Gaspar, Catarina Rosa.
Geo-localização de viaturas na gestão de frotas.
Degree: 2011, Universidade Nova
URL: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7237
► Relatório de Estágio apresentado para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Gestão do Território especialização em Detecção Remota e Sistemas…
(more)
▼ Relatório de Estágio apresentado para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Gestão do Território especialização em Detecção Remota e Sistemas de Informação Geográfica
A organização do território está intimamente relacionada com a evolução dos transportes. O sector dos transportes é transversal a toda a economia.
No contexto de instabilidade política e económica, que se vive actualmente, é crucial para qualquer organização possuir meios e técnicas capazes de responder às exigências do mercado.
Nas últimas décadas ocorreram fortes alterações tecnológicas no sector dos transportes, que se deveram à crescente necessidade das empresas terem um maior controlo da sua actividade, não só agravada pelo aumento dos custos de combustível mas também pelo aumento da concorrência no sector.
Os sistemas de gestão de frotas, aliados às novas tecnologias de informação e comunicação, (GPS, GPRS e ligações de banda larga mais fiáveis), revelaram-se ferramentas de gestão indispensáveis no controlo da actividade das empresas.
Estas ferramentas de gestão permitem às empresas ter uma visão mais realista de todas as operações realizadas no terreno, na medida que podem acompanhar todos os acontecimentos em tempo real e ter acesso a todos os detalhes de cada viagem, percursos executados pelos operadores, bem como identificar os pontos críticos da actividade.
Deste modo, o responsável pela gestão de frotas de uma empresa consegue identificar se os operadores cumpriram ou não as tarefas que lhe foram atribuídas, se respeitaram as horas permitidas de condução, os limites de velocidade, etc.
No mercado existem sistemas que, além de permitirem identificar a localização do veículo ou carga, facultam informações adicionais, nomeadamente sobre as condições ou estado do veículo (cor, marca, chapa de matrícula, nível de combustível, data da inspecção, avarias, estado dos pneus, número de acidentes) e do condutor (carta de condução).
Por outro lado, os sistemas de gestão de frotas, não só permitem às empresas uma melhor gestão, controlo e planeamento das actividades, como também lhes garantem uma maior segurança, tanto para o condutor como para o próprio veículo.
As potencialidades associadas a estas ferramentas de gestão têm produzido grandes alterações nas áreas dos transportes, logística, actividades comerciais, assistência técnica, distribuição, construção civil, administração pública, entre outras.
O leque de oferta destes sistemas de gestão de frotas é vasto, sendo possível encontrar desde soluções simples e intuitivas até soluções mais complexas. Inosat, Masternault, Frotcom, TomTom, Guardasat, Trackind Diary, Comut, C-Track, Tellus, Cartrack, Tecmic, FrotaLink são exemplo de empresas que actuam nesta área de actividade.
Advisors/Committee Members: Ferreira, Jorge.
Subjects/Keywords: Global Positioning System (GPS).; Sistema de Informação Geográfica (SIG’s); Sistemas de Gestão de Frotas
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APA (6th Edition):
Gaspar, C. R. (2011). Geo-localização de viaturas na gestão de frotas. (Thesis). Universidade Nova. Retrieved from http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7237
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):
Gaspar, Catarina Rosa. “Geo-localização de viaturas na gestão de frotas.” 2011. Thesis, Universidade Nova. Accessed January 23, 2021.
http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7237.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gaspar, Catarina Rosa. “Geo-localização de viaturas na gestão de frotas.” 2011. Web. 23 Jan 2021.
Vancouver:
Gaspar CR. Geo-localização de viaturas na gestão de frotas. [Internet] [Thesis]. Universidade Nova; 2011. [cited 2021 Jan 23].
Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7237.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gaspar CR. Geo-localização de viaturas na gestão de frotas. [Thesis]. Universidade Nova; 2011. Available from: http://www.rcaap.pt/detail.jsp?id=oai:run.unl.pt:10362/7237
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Pretoria
27.
Pietersen, Darren William.
Behavioural
ecology and conservation biology of ground pangolins Smutsia
temminckii in the Kalahari Desert.
Degree: Zoology and
Entomology, 2013, University of Pretoria
URL: http://hdl.handle.net/2263/36779
► Ground pangolins Smutsia temminckii are inconspicuous, mainly nocturnal mammals that occur at low population densities. As a result, there is scant information available on the…
(more)
▼ Ground pangolins Smutsia temminckii are inconspicuous,
mainly nocturnal mammals
that occur at low population densities.
As a result, there is scant information available
on the ecology
and physiology of this species. To date the handful of studies
focussing on this species were centred in the mesic eastern regions
of its range, with
no attention being given to ecological and
biological traits in arid environments. To
address these data
shortfalls, a study was undertaken in the Kalahari Desert in
northwestern
South Africa. Very High Frequency (VHF) transmitters
or
Global Positioning
System (
GPS) loggers were fitted to 16
ground pangolins and their ecology and
physiology studied over a
period of three years.
Throughout its range the ground pangolin is
increasingly endangered, predominantly
due to anthropogenic
threats. Previous studies have identified threats facing this
species, but very few of these studies included quantitative data
as to the extent of
these threats. The present study suggests that
the main threats to ground pangolins
in southern Africa are
electrocution on electrified fences, the traditional medicine
trade, habitat loss, road mortalities and capture in gin traps.
Although accidental
poisoning has previously been viewed as a
threat, a review of the available literature
suggests that this is
not the case and that these views stemmed from two isolated
incidents of captive animals. Electrocutions probably pose the
greatest threat to
ground pangolins, with mortality rates of one
pangolin per 11 km of electrified fence
per year recorded during
this study.
Home range sizes of this arid-zone population are
comparable to the home range
sizes recorded in mesic populations.
Study animals in the Kalahari had Minimum
Convex Polygon (MCP)
home range values of 10.0 ± 8.9 km² SD for adults and 7.1 ±
1.1
km² SD for juveniles, in comparison to the 0.17 – 23.38 km² MCP in
Zimbabwe
and 1.3 – 7.9 km2 MCP in mesic north-eastern South
Africa. These results are
surprising as arid-zone animals usually
have larger home ranges than do their mesic
counterparts. It is
hypothesised that this discrepancy is due to the fact that ground
pangolins in the Kalahari are on average 25 – 30 % smaller than
their mesic
counterparts. This smaller body size means that
individuals require a smaller home
range to meet their dietary
requirements, which could be counteracting the trend of
arid-zone
individuals requiring larger home ranges.
This research also found
ground pangolins to be more active during the day in winter
and
nearly entirely nocturnal during summer. These changes in
photoperiodicity are
likely driven by adaptations to the extreme
climatic conditions present at the study
site rather than
predation pressure or changes in food resources, although the
latter
may be playing a role as well. By being diurnal in winter,
individuals avoid the
extremely cold night-time temperatures, thus
saving energy that would otherwise be
spent on maintaining their
body temperature. By contrast, becoming nocturnal in
…
Advisors/Committee Members: McKechnie, Andrew E. (advisor), Jansen, R. (coadvisor).
Subjects/Keywords: Kalahari
Desert; Ground
pangolins Smutsia temminckii; Nocturnal
mammals;
Species; Global
Positioning System (GPS);
UCTD
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pietersen, D. W. (2013). Behavioural
ecology and conservation biology of ground pangolins Smutsia
temminckii in the Kalahari Desert. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/36779
Chicago Manual of Style (16th Edition):
Pietersen, Darren William. “Behavioural
ecology and conservation biology of ground pangolins Smutsia
temminckii in the Kalahari Desert.” 2013. Masters Thesis, University of Pretoria. Accessed January 23, 2021.
http://hdl.handle.net/2263/36779.
MLA Handbook (7th Edition):
Pietersen, Darren William. “Behavioural
ecology and conservation biology of ground pangolins Smutsia
temminckii in the Kalahari Desert.” 2013. Web. 23 Jan 2021.
Vancouver:
Pietersen DW. Behavioural
ecology and conservation biology of ground pangolins Smutsia
temminckii in the Kalahari Desert. [Internet] [Masters thesis]. University of Pretoria; 2013. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2263/36779.
Council of Science Editors:
Pietersen DW. Behavioural
ecology and conservation biology of ground pangolins Smutsia
temminckii in the Kalahari Desert. [Masters Thesis]. University of Pretoria; 2013. Available from: http://hdl.handle.net/2263/36779
Iowa State University
28.
Duerfeldt, Kevin Richard.
Use of geographic information systems at Gifft Hill School, St. John, U.S. Virgin Islands.
Degree: 2011, Iowa State University
URL: https://lib.dr.iastate.edu/etd/10140
► Board members, administrators, and faculty at Gifft Hill School, St. John, U.S. Virgin Islands, required a method for recording, organizing, and communicating information about the…
(more)
▼ Board members, administrators, and faculty at Gifft Hill School, St. John, U.S. Virgin Islands, required a method for recording, organizing, and communicating information about the property and facilities on the school grounds. This information will be used while planning and managing facilities expansion. In addition to these physical attributes of the property and facilities Iowa State University desired a way of recording growing conditions to inform the design and manage of a school garden program. Geographic information systems (GIS) were evaluated as a possible solution to managing this spatially variable information. Using ArcGIS, Global Positioning System (GPS), data available from government agencies, and data collected on-site, we built a GIS for Gifft Hill School. In 2010, we collected and mapped environmental variation at candidate locations for school gardens. By mapping land cover and current and planned buildings, we determined the most suitable locations for initial school gardens using ArcGIS model builder and calculated site areas for budgeting purposes. We combined GIS and GPS to plan a trail through dense vegetation between the two Gifft Hill School campuses. The use of GIS to collect and manage information about the site and facilities has been successful in initial planning and construction activities.
Subjects/Keywords: geographic information systems; GIS; global positioning system; GPS; school gardens; sustainable horticulture; Horticulture
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Duerfeldt, K. R. (2011). Use of geographic information systems at Gifft Hill School, St. John, U.S. Virgin Islands. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/10140
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):
Duerfeldt, Kevin Richard. “Use of geographic information systems at Gifft Hill School, St. John, U.S. Virgin Islands.” 2011. Thesis, Iowa State University. Accessed January 23, 2021.
https://lib.dr.iastate.edu/etd/10140.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Duerfeldt, Kevin Richard. “Use of geographic information systems at Gifft Hill School, St. John, U.S. Virgin Islands.” 2011. Web. 23 Jan 2021.
Vancouver:
Duerfeldt KR. Use of geographic information systems at Gifft Hill School, St. John, U.S. Virgin Islands. [Internet] [Thesis]. Iowa State University; 2011. [cited 2021 Jan 23].
Available from: https://lib.dr.iastate.edu/etd/10140.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Duerfeldt KR. Use of geographic information systems at Gifft Hill School, St. John, U.S. Virgin Islands. [Thesis]. Iowa State University; 2011. Available from: https://lib.dr.iastate.edu/etd/10140
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Western Ontario
29.
Zhu, Lynn.
Measuring Community Mobility in Older Adults with Parkinson’s Disease Using A Wearable GPS Sensor And Self-report Assessment Tools.
Degree: 2017, University of Western Ontario
URL: https://ir.lib.uwo.ca/etd/4877
► Community mobility (CM) is an important instrumental activity of daily living associated with quality of life and independence. Measuring the CM of older adults, particularly…
(more)
▼ Community mobility (CM) is an important instrumental activity of daily living associated with quality of life and independence. Measuring the CM of older adults, particularly those with gait disorders such as Parkinson’s disease (PD), is an important way to understand how to help people maintain mobility in the real life setting. CM is measured using self-report measures and emergent technologies, such as wearable Global Positioning System (GPS) sensors. However, the measurement properties of most available assessments have not been compared within a PD population to determine their appropriateness and identify any feasibility issues.
The primary objective of this project was to compare a novel instrumented measure (Wireless Isoinertial Measurement unit with GPS; WIMU-GPS) with a self-report diary and the Life Space Assessment (LSA). To accomplish this aim, a review of literature was first conducted to show that the validity and reliability between mobility measures were seldom assessed in existing comparison studies. Then, seventy people with early to mid-stage PD (67.4 ± 6.5 years, 67.1% men) wore the WIMU-GPS and completed the self-report diaries and LSA for a 14 day period. Moderate agreements were observed between WIMuGPS and diary for trip frequency and duration (Intraclass correlation coefficient [ICC] = 0.71, 95% CI = 0.51 to 0.82; 0.67, 95% CI = 0.42 to 0.82, respectively). Disagreement between these two measures was higher for duration, particularly among individuals who regularly worked or volunteered. Convergent validity and good reliability was attained for trip frequency (Spearman correlation coefficient [rs] = 0.69, 95% CI = 0.52 to 0.81; ICC = 0.714, 95% CI = 0.51 to 0.82) and duration outside (rs = 0.43, 95% CI = 0.18 to 0.62; ICC = 0.674, 95% CI = 0.42 to 0.82) measured by the WIMU-GPS and diary. However, convergent validity was not observed between WIMU-GPS recordings and LSA reported life space size (rs = 0.39, 95% CI = 0.14 to 0.60). The LSA exhibited ceiling effects and discrimination issues. It should be avoided as a CM measure when it is feasible to use the WIMU-GPS and diary instead.
The secondary objective was to determine the utility and feasibly of using WIMU-GPS to quantify different dimensions of CM in people with PD (PwP). Using a subset of participants, it was first determined that sampling error was minimized in non-discrete continuous outcomes, such as “time outside” and “area size”, when daily WIMU-GPS recordings lasted at least 600 minutes. A shorter recording minimum of at least 500 minutes per day was also suitable for discrete outcomes, such as “trip count” and “hotspot count”. The sample size precluded the determination of the optimal number of days of recording. However, data from at least seven distinct days of recording is required to capture the natural fluctuations in CM between days of the week. From a practical standpoint, a minimum of seven distinct recording days were best attained if the WIMU-GPS was worn for at least eight days. Next, the new minimum GPS recording…
Subjects/Keywords: Measurement comparison; mobility assessment; WIMU-GPS; global positioning system; Parkinson's disease; community mobility; Epidemiology
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhu, L. (2017). Measuring Community Mobility in Older Adults with Parkinson’s Disease Using A Wearable GPS Sensor And Self-report Assessment Tools. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/4877
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):
Zhu, Lynn. “Measuring Community Mobility in Older Adults with Parkinson’s Disease Using A Wearable GPS Sensor And Self-report Assessment Tools.” 2017. Thesis, University of Western Ontario. Accessed January 23, 2021.
https://ir.lib.uwo.ca/etd/4877.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhu, Lynn. “Measuring Community Mobility in Older Adults with Parkinson’s Disease Using A Wearable GPS Sensor And Self-report Assessment Tools.” 2017. Web. 23 Jan 2021.
Vancouver:
Zhu L. Measuring Community Mobility in Older Adults with Parkinson’s Disease Using A Wearable GPS Sensor And Self-report Assessment Tools. [Internet] [Thesis]. University of Western Ontario; 2017. [cited 2021 Jan 23].
Available from: https://ir.lib.uwo.ca/etd/4877.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhu L. Measuring Community Mobility in Older Adults with Parkinson’s Disease Using A Wearable GPS Sensor And Self-report Assessment Tools. [Thesis]. University of Western Ontario; 2017. Available from: https://ir.lib.uwo.ca/etd/4877
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Illinois – Urbana-Champaign
30.
Doherty, Richard Joseph.
The alienation of humans from nature: media and environmental discourse.
Degree: PhD, Communications, 2015, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/78361
► Environmental problems are discouraging. Extensive and growing media consumption in the U.S. may be one of a few reasons. Communication constructs how people experience and…
(more)
▼ Environmental problems are discouraging. Extensive and growing media consumption in the U.S. may be one of a few reasons. Communication constructs how people experience and understand nature, and corporate ownership of media influences the content (Beder, 2004). What does this discouragement look like in the news? Nature is often made the culprit that impinges on people identified as consumers. Added environmental responsibility for the “green” consumer can overwhelm them, and negative connotations associated with environmentalist suggest people avoid that label. And the odds seem to be in nature’s favor, when the individual is pitted against such forces as El Niño, and
global warming. Technology, often the savior, produces additional conflict, problems, and cost. War metaphors and rhetoric in the fight over resources raises concerns over other uses. Polls show U.S. Americans becoming more fearful of environmental problems, but not changing their consumption patterns to help solve the problems. Environmental injustices can result from communication practices, even war and violence. All of these aspects point to power—who has authority, how they use it in dominant discourses, and what responses it produces. It is a social fact that people are discouraged about the environment.
Critical-cultural and media studies, provide ideas to address social and environmental problems through communication and provide three paths for understanding; critical theory addresses power and domination; symbolic interaction addresses meaning making from social interaction; and rhetoric, narrative and discourse address how ideas are used in stories to persuade people. These fields emerge from the work of the Chicago school on the interactions of society and mass media, and the Frankfurt school (with roots in Marxism) on the legitimacy which commercial media provide those in power that maintains inequalities and injustice. Critical analysis of media stories that relate to the environment, expose a bigger world than that described by those in power. Challenging that discourse can offer justice to those with little to no power or voice. It can also propose alternatives to alleviate inequality. The Chicago school’s sense of hope adds to this, in trying to make the world better by research on how the world is represented, and how power is used to dominate people and nature.
Theory of environmental communication (Milstein, 2009) bridges three areas: the material-symbolic of real problems communicated through language; the mediated human-nature relationship that represents nature in particular ways; and applied activist theory which exposes problematic representations and offers better alternatives. Nature and environment are defined as symbolically complex ideas; nature, most often as all of the earth and beyond, but not including humans and their creations; whereas environment is seen as the surroundings that usually includes the creations of humans. Humans not acting as part of nature are a key piece of the problem and points to…
Advisors/Committee Members: Denzin, Norman K. (advisor), Denzin, Norman K. (Committee Chair), Nerone, John C. (committee member), Christians, Clifford G. (committee member), Raphael, Chad (committee member).
Subjects/Keywords: Environmental Communication; TV Weather; Global Positioning System (GPS); discourse; alienation; critical discourse analysis
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APA (6th Edition):
Doherty, R. J. (2015). The alienation of humans from nature: media and environmental discourse. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/78361
Chicago Manual of Style (16th Edition):
Doherty, Richard Joseph. “The alienation of humans from nature: media and environmental discourse.” 2015. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 23, 2021.
http://hdl.handle.net/2142/78361.
MLA Handbook (7th Edition):
Doherty, Richard Joseph. “The alienation of humans from nature: media and environmental discourse.” 2015. Web. 23 Jan 2021.
Vancouver:
Doherty RJ. The alienation of humans from nature: media and environmental discourse. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2015. [cited 2021 Jan 23].
Available from: http://hdl.handle.net/2142/78361.
Council of Science Editors:
Doherty RJ. The alienation of humans from nature: media and environmental discourse. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2015. Available from: http://hdl.handle.net/2142/78361
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