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1.
Divakarla, Kavya Prabha.
A Cognitive Advanced Driver Assistance Systems (ADAS) Architecture for Autonomous-capable Electrified Vehicles.
Degree: PhD, 2019, McMaster University
URL: http://hdl.handle.net/11375/23832 
► The automotive industry is seen to be making a monumental paradigm shift from manual to semi-autonomous to fully Autonomous Vehicles. An Advanced Driver Assistance System…
(more)
▼ The automotive industry is seen to be making a monumental paradigm shift from manual to semi-autonomous to fully Autonomous Vehicles. An Advanced Driver Assistance System (ADAS) forms a major building block for realizing these next generation of highly Autonomous-capable Vehicles. Although the general ADAS architecture is widely discussed, limited details are available about the functionality of the modules and their interactions, backed up by scientific justification. This limits the utilization of such an architecture for pragmatic implementation. A Cognitive ADAS Architecture for level 4 Autonomous-capable Electrified Vehicles (EV) is proposed in this thesis. Variations for levels 3 and 3.5 (combination of levels 3 and 4, with the primary fallback through a human driver and the secondary through an Automated Driving System) are also presented.
A validated simulation framework is built for highway driving based on the proposed level 4 architecture for an enhanced Tesla Model S. It was concluded that the autonomous control provided a 28% energy economy increase, on average, compared to human driver control. Through a quantitative sensitivity analysis, the optimal Mission/Motion Planning and energy management are seen in addition to a positive impact on the EV battery, motor, and dynamics, realized from the minimized instantaneous fluctuations. These factors are considered to contribute to this significant increase in the energy economy of an autonomous-controlled EV. Furthermore, this impact was seen to be relatively higher for autonomous longitudinal vehicle control compared to lateral. This difference in the improved operation of the Autonomous-capable EV components between the Automated Driving System and the human driver control was seen to be the highest for the battery current.
In overall, an increase in vehicle autonomy, resulted in an improvement in the EV performance, dynamics and operation of the battery and motor, compared to a human driver control.
Thesis
Doctor of Philosophy (PhD)
Advisors/Committee Members: Emadi, Ali, Razavi, Saiedeh, Electrical and Computer Engineering.
Subjects/Keywords: Autonomous Vehicles; Electrified Vehicles; Architecture
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APA (6th Edition):
Divakarla, K. P. (2019). A Cognitive Advanced Driver Assistance Systems (ADAS) Architecture for Autonomous-capable Electrified Vehicles. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/23832
Chicago Manual of Style (16th Edition):
Divakarla, Kavya Prabha. “A Cognitive Advanced Driver Assistance Systems (ADAS) Architecture for Autonomous-capable Electrified Vehicles.” 2019. Doctoral Dissertation, McMaster University. Accessed February 27, 2021.
http://hdl.handle.net/11375/23832.
MLA Handbook (7th Edition):
Divakarla, Kavya Prabha. “A Cognitive Advanced Driver Assistance Systems (ADAS) Architecture for Autonomous-capable Electrified Vehicles.” 2019. Web. 27 Feb 2021.
Vancouver:
Divakarla KP. A Cognitive Advanced Driver Assistance Systems (ADAS) Architecture for Autonomous-capable Electrified Vehicles. [Internet] [Doctoral dissertation]. McMaster University; 2019. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/11375/23832.
Council of Science Editors:
Divakarla KP. A Cognitive Advanced Driver Assistance Systems (ADAS) Architecture for Autonomous-capable Electrified Vehicles. [Doctoral Dissertation]. McMaster University; 2019. Available from: http://hdl.handle.net/11375/23832
Embry-Riddle Aeronautical University
2.
Kaur, Jasleen.
Behavioral Motivation of Prospective Mars’ Crewmembers.
Degree: MSin Aeronautics, College of Aviation, 2018, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/437
► Living in extreme climatic conditions is challenging on planet Earth which encourages researchers hoping to find life on other planets such as Mars. This…
(more)
▼ Living in extreme climatic conditions is challenging on planet Earth which encourages researchers hoping to find life on other planets such as Mars. This research was conducted to explore the effects on human behavior and willingness to go to Mars when individuals were informed about all the possible risks. Two studies were conducted to examine the participants. First, through an online survey and second through observation study on the participants who participated in a habitat study in the LUNARES facility in Poland.
As per reviewed literature, there are thousands of people who have already shown their interest to go to Mars. Since the technology is under development to send humans to Mars, researchers are making sure of the safest journey for the astronauts. It is imperative to select the right candidates among all these thousands of interested people. This study was helpful to review the physiological effects that crew face in isolation, to find out the solutions before any long-duration space mission, and to satisfy the hypothesis. There were 157 participants who participated in the survey, and 36 participated in the habitat observation study. Researcher expected that most of the participants are not fully aware of the risks they may encounter in space. Once participants are aware, many are likely to decline the mission. The results from the daily diary questionnaire study convey that even though the participants stayed in isolation for a short period, participants still showed some symptoms of isolation such as loneliness, boredom, fatigue. Results also show that different age groups have a different mindset and motivation for the Mars mission. Results show some significant difference in the comparison study of participants < 30 and 30+ age group, such as < 30 age group participants show more interest in the mission to Mars with no return to Earth, both the < 30 and 30+ age groups responded that their decisions are affected due to delay in communication, effect of extreme temperature, and receiving information solely from automation. Results from cognitive tests illustrate that participants took more time to solve the simple math problems with audio in the background as compared to the math problems with no audio in the background. Even though they took more time to solve the math problems, their recall answers were still wrong 40% in total.
Subjects/Keywords: Aeronautical Vehicles; Aviation; Space Vehicles
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APA (6th Edition):
Kaur, J. (2018). Behavioral Motivation of Prospective Mars’ Crewmembers. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/437
Chicago Manual of Style (16th Edition):
Kaur, Jasleen. “Behavioral Motivation of Prospective Mars’ Crewmembers.” 2018. Masters Thesis, Embry-Riddle Aeronautical University. Accessed February 27, 2021.
https://commons.erau.edu/edt/437.
MLA Handbook (7th Edition):
Kaur, Jasleen. “Behavioral Motivation of Prospective Mars’ Crewmembers.” 2018. Web. 27 Feb 2021.
Vancouver:
Kaur J. Behavioral Motivation of Prospective Mars’ Crewmembers. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2018. [cited 2021 Feb 27].
Available from: https://commons.erau.edu/edt/437.
Council of Science Editors:
Kaur J. Behavioral Motivation of Prospective Mars’ Crewmembers. [Masters Thesis]. Embry-Riddle Aeronautical University; 2018. Available from: https://commons.erau.edu/edt/437
University of Johannesburg
3.
Van Niekerk, Hendrik Rudolph.
Electric vehicles as energy processing and conversion systems.
Degree: 2014, University of Johannesburg
URL: http://hdl.handle.net/10210/12182
► D.Ing. (Electrical & Electronic Engineering Science)
In the light of a history of more than a century, and reviving interest over the last three decades,…
(more)
▼ D.Ing. (Electrical & Electronic Engineering Science)
In the light of a history of more than a century, and reviving interest over the last three decades, battery powered electric vehicles are seen as one of the contributing technologies to alleviate transport problems in the future. This thesis is concerned with the use of energy in road transport. In particular, some selected aspects of the application of battery powered road vehicles are addressed. The thesis gives a brief background history and reviews the forces and factors which presently play a role in the developments and future application of battery electric vehicles. The main contribution, however, lies in the field of technical clarification of some aspects of electric vehicle theoretical analysis, which have not been addressed before. The first of these technical subjects is the analysis of energy consumption of vehicles when operating under non-steady driving conditions. The analysis results in simple but relevant expressions for the energy consumption of any moving vehicle during start-stop driving, as well as driving over a hilly route. The potential benefit of kinetic energy recovery can be quantitatively determined. The theory is then applied to battery electric vehicles and the results are compared to actual recorded energy consumption figures. The second technical investigation concerns the optimisation of electric vehicle drive systems with respect to mass. It is shown that optimized drive systems should be designed to suit both the energy density characteristics of the batteries used, as well as the particular characteristics of the drive cycle to which the vehicles will be applied.
Subjects/Keywords: Electric vehicles
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APA (6th Edition):
Van Niekerk, H. R. (2014). Electric vehicles as energy processing and conversion systems. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/12182
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):
Van Niekerk, Hendrik Rudolph. “Electric vehicles as energy processing and conversion systems.” 2014. Thesis, University of Johannesburg. Accessed February 27, 2021.
http://hdl.handle.net/10210/12182.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Van Niekerk, Hendrik Rudolph. “Electric vehicles as energy processing and conversion systems.” 2014. Web. 27 Feb 2021.
Vancouver:
Van Niekerk HR. Electric vehicles as energy processing and conversion systems. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10210/12182.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Van Niekerk HR. Electric vehicles as energy processing and conversion systems. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/12182
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Johannesburg
4.
Loots, Gerhard Waldemar.
'n Ondersoek na draaiveldmasjiene met elektroniese kommutators vir aandrywing van elektriese voertuie.
Degree: 2014, University of Johannesburg
URL: http://hdl.handle.net/10210/12178
► M.Sc. (Electrical & Electronic Engineering)
The behaviour of alternating current machines being fed from an electronic commutator is investigated. The performance of compound power switches…
(more)
▼ M.Sc. (Electrical & Electronic Engineering)
The behaviour of alternating current machines being fed from an electronic commutator is investigated. The performance of compound power switches for use in electric vehicle drives are examined. A detailed study on switching losses and base current characteristics based upon experimental measurements was carried out. With further reference to power switches the merit, development and functioning of an electronic commutator is discussed. Because of the close association between this study and electric vehicle drives, a comparative study of the performance of different rotor types within the same machine was executed. Attention is paid to torque and efficiency characteristics in particular. The influence of voltage and current harmonics was established by comparative testing of the machine with sinusoidal and electronic commutator excitation. The study shows that the highest specific power was attained with the alternating current machine with a wound rotor (synchronous machine) while there seems to be merit in the use of permanent magnet rotors for electric drives as well. On the average the use of electronic commutator excitation resulted in an efficiency decrease of approximately 15% for the a.c. machine with different rotor types. Efficiency and torque for an induction machine with solid rotor were disappointing so that there seems to be little application for solid steel rotors. A simple model for the synchronous machine with wound rotor was developed to explain the dependence of torque and efficiency upon speed of rotation and commutation angle. To conclude, guidelines are given for future studies on electric vehicle drives and machine types as primary drive.
Subjects/Keywords: Electric vehicles
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APA (6th Edition):
Loots, G. W. (2014). 'n Ondersoek na draaiveldmasjiene met elektroniese kommutators vir aandrywing van elektriese voertuie. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/12178
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):
Loots, Gerhard Waldemar. “'n Ondersoek na draaiveldmasjiene met elektroniese kommutators vir aandrywing van elektriese voertuie.” 2014. Thesis, University of Johannesburg. Accessed February 27, 2021.
http://hdl.handle.net/10210/12178.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Loots, Gerhard Waldemar. “'n Ondersoek na draaiveldmasjiene met elektroniese kommutators vir aandrywing van elektriese voertuie.” 2014. Web. 27 Feb 2021.
Vancouver:
Loots GW. 'n Ondersoek na draaiveldmasjiene met elektroniese kommutators vir aandrywing van elektriese voertuie. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10210/12178.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Loots GW. 'n Ondersoek na draaiveldmasjiene met elektroniese kommutators vir aandrywing van elektriese voertuie. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/12178
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Embry-Riddle Aeronautical University
5.
Memon, Muhammad Wasif.
Fuel Efficient Control Design and Constrained Motion Analysis for Spacecraft Coulomb Formation in Elliptic Chief Orbits.
Degree: MSin Aerospace Engineering, Aerospace Engineering, 2019, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/490
► The use of Coulomb force has been analyzed in recent years to provide propulsion in space for various applications. Coulomb formation can also be…
(more)
▼ The use of Coulomb force has been analyzed in recent years to provide propulsion in space for various applications. Coulomb formation can also be utilized to make close formation spacecraft missions fuel efficient. In this study, the Coulomb formation of two craft is studied in elliptic chief orbits for two formation geometries. The first formation requires both spacecraft to be aligned along the nadir (radial) direction and the second formation requires both spacecraft to maintain a constant separation distance relative to each other while each spacecraft rotates freely on the surface of a sphere with the ratio of the radii being inversely proportional to the ratio of the masses. Two nonlinear optimal feedback control techniques are implemented to stabilize the dynamics of the Coulomb formation and maintain the desired formation while minimizing the energy costs. The control accelerations are compared to the analytical constraint accelerations obtained using the Udwadia-Kalaba equations for constrained motion. Due to the effects of plasma shielding, a Debye length model is incorporated in the nonlinear dynamics as a linear function of altitude of the formation's center of mass. The integrated thruster efforts are calculated for both optimal and analytical techniques and the fuel costs are determined and compared for both formations. The results demonstrated that the use of Coulomb force increases fuel efficiency for formation achievement and maintenance. The numerical analysis is performed on a) the highly eccentric Molniya orbit and b) the near-circular near-GEO orbit of the ERS-21.
Subjects/Keywords: Aeronautical Vehicles
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Manager
APA (6th Edition):
Memon, M. W. (2019). Fuel Efficient Control Design and Constrained Motion Analysis for Spacecraft Coulomb Formation in Elliptic Chief Orbits. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/490
Chicago Manual of Style (16th Edition):
Memon, Muhammad Wasif. “Fuel Efficient Control Design and Constrained Motion Analysis for Spacecraft Coulomb Formation in Elliptic Chief Orbits.” 2019. Masters Thesis, Embry-Riddle Aeronautical University. Accessed February 27, 2021.
https://commons.erau.edu/edt/490.
MLA Handbook (7th Edition):
Memon, Muhammad Wasif. “Fuel Efficient Control Design and Constrained Motion Analysis for Spacecraft Coulomb Formation in Elliptic Chief Orbits.” 2019. Web. 27 Feb 2021.
Vancouver:
Memon MW. Fuel Efficient Control Design and Constrained Motion Analysis for Spacecraft Coulomb Formation in Elliptic Chief Orbits. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2019. [cited 2021 Feb 27].
Available from: https://commons.erau.edu/edt/490.
Council of Science Editors:
Memon MW. Fuel Efficient Control Design and Constrained Motion Analysis for Spacecraft Coulomb Formation in Elliptic Chief Orbits. [Masters Thesis]. Embry-Riddle Aeronautical University; 2019. Available from: https://commons.erau.edu/edt/490
Embry-Riddle Aeronautical University
6.
Hamada, Said S.
Development of a Small Unmanned Aerial Vehicle Longitudinal Model for Future Flutter Testing.
Degree: MSin Aerospace Engineering, Graduate Studies, 2018, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/395
► This thesis presents the system identification of the longitudinal motion of a small unmanned aerial vehicle with flexible characteristics. The unmanned aerial vehicle of…
(more)
▼ This thesis presents the system identification of the longitudinal motion of a small unmanned aerial vehicle with flexible characteristics. The unmanned aerial vehicle of study is an off-the-shelf aircraft with limited knowledge about the dynamic model. The first task in obtaining a model for flutter testing is determining the rigid body model. Specifically, this thesis will focus in the development of the aircraft and obtaining the longitudinal rigid body model. This involves the assembly and configuration of the avionics and sensors, performing experiments to determine mass and inertia properties and using software tools for aerodynamic analysis to get preliminary values for the static and dynamic stability derivatives. The next step was to design flight experiments for the purpose of system identification. The system identification focused on obtaining the longitudinal model and available software tools were used to get comparative results. The best model was identified using the parameter identification library which gave a 65% match in the pitch rate and 70% match in the vertical acceleration flight data from a doublet response. The short period mode was identified to have a frequency of 6.01 rad/s and a damping ratio of 0.977.
Subjects/Keywords: Aeronautical Vehicles
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APA ·
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Export
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Manager
APA (6th Edition):
Hamada, S. S. (2018). Development of a Small Unmanned Aerial Vehicle Longitudinal Model for Future Flutter Testing. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/395
Chicago Manual of Style (16th Edition):
Hamada, Said S. “Development of a Small Unmanned Aerial Vehicle Longitudinal Model for Future Flutter Testing.” 2018. Masters Thesis, Embry-Riddle Aeronautical University. Accessed February 27, 2021.
https://commons.erau.edu/edt/395.
MLA Handbook (7th Edition):
Hamada, Said S. “Development of a Small Unmanned Aerial Vehicle Longitudinal Model for Future Flutter Testing.” 2018. Web. 27 Feb 2021.
Vancouver:
Hamada SS. Development of a Small Unmanned Aerial Vehicle Longitudinal Model for Future Flutter Testing. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2018. [cited 2021 Feb 27].
Available from: https://commons.erau.edu/edt/395.
Council of Science Editors:
Hamada SS. Development of a Small Unmanned Aerial Vehicle Longitudinal Model for Future Flutter Testing. [Masters Thesis]. Embry-Riddle Aeronautical University; 2018. Available from: https://commons.erau.edu/edt/395
Embry-Riddle Aeronautical University
7.
Pedroza, Natalie Ramos.
Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators.
Degree: PhD, Doctoral Studies, 2018, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/403
► Limit cycle oscillations (LCO), also known as utter, cause significant challenges in flight control of small unmanned aerial vehicles (SUAVs), and could potentially lead…
(more)
▼ Limit cycle oscillations (LCO), also known as utter, cause significant challenges in flight control of small unmanned aerial vehicles (SUAVs), and could potentially lead to structural damage and catastrophic failures. LCO can be described as vibrational motions in the rocking, pitching and plunging displacements of an aircraft wing. To address this, the use of synthetic jet actuators (SJAs) in UAV flight control systems is becoming popular as a practical alternative and to mechanical deflection surfaces.
Synthetic jet actuators are promising tools for LCO suppression systems in small UAVs due to their small size, ease of operation, and low cost. Uncertainties inherent in the dynamics of the synthetic jet actuators present significant challenges in the synthetic jet actuator-based control design. Specifically, the input-output characteristic (voltage-virtual deflection angle relationship) of the synthetic jet actuators is nonlinear and contains parametric uncertainty. Further control design challenges exist in situations where multiple actuators lose effectiveness.
This dissertation focuses on the suppression of limit cycle oscillations on small unmanned air vehicles using synthetic jet actuators. A brief description on how wind gust affects aircraft tracking control is presented. It shows an extension to a paper by adding the wind gust model to the system while also varying the uncertain synthetic jet actuator parameters using a Monte Carlo method. Next, a robust nonlinear control method is presented, which achieves simultaneous aircraft tracking control and limit cycle oscillation suppression using these synthetic jet actuators and a robust controller. Following that, a nonlinear LCO regulation method is presented, which uses a bank of dynamic filters to eliminate the need for pitching and plunging LCO rate measurements. Finally, an alternative method of LCO regulation control is presented, which utilizes a sliding mode observer in lieu of a bank of filters to estimate the pitching and plunging LCO rates.
Subjects/Keywords: Aeronautical Vehicles
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APA ·
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Manager
APA (6th Edition):
Pedroza, N. R. (2018). Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators. (Doctoral Dissertation). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/403
Chicago Manual of Style (16th Edition):
Pedroza, Natalie Ramos. “Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators.” 2018. Doctoral Dissertation, Embry-Riddle Aeronautical University. Accessed February 27, 2021.
https://commons.erau.edu/edt/403.
MLA Handbook (7th Edition):
Pedroza, Natalie Ramos. “Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators.” 2018. Web. 27 Feb 2021.
Vancouver:
Pedroza NR. Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators. [Internet] [Doctoral dissertation]. Embry-Riddle Aeronautical University; 2018. [cited 2021 Feb 27].
Available from: https://commons.erau.edu/edt/403.
Council of Science Editors:
Pedroza NR. Robust Nonlinear Estimation and Control Applications using Synthetic Jet Actuators. [Doctoral Dissertation]. Embry-Riddle Aeronautical University; 2018. Available from: https://commons.erau.edu/edt/403
North-West University
8.
Senokwane, Otsile Clutricia.
Effectiveness of managing the North West motor vehicles licencing revenue systems / Otsile Clutchia Senokwane
.
Degree: 2012, North-West University
URL: http://hdl.handle.net/10394/15832
► The study intended to evaluate the effectiveness of managing the North West motor vehicles licensing revenue system in case of Department of Safety, Public Works…
(more)
▼ The study intended to evaluate the effectiveness of managing the North West motor
vehicles licensing revenue system in case of Department of Safety, Public Works in
the North West Province with office in Mmabatho. Data was collected through
telephone and e-mail questionnaire administered to the revenue section in the
Department of Roads Safety and Public Works. A Sample size of 42 to which 44
copies of the questionnaire were dispatched returned all the questionnaires. The main
findings revealed that the more knowledgeable the public the more they comply
with policies. Tax incentives could be used to reduce health risk caused by car
pollution.
Subjects/Keywords: Motor vehicles
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Manager
APA (6th Edition):
Senokwane, O. C. (2012). Effectiveness of managing the North West motor vehicles licencing revenue systems / Otsile Clutchia Senokwane
. (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/15832
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):
Senokwane, Otsile Clutricia. “Effectiveness of managing the North West motor vehicles licencing revenue systems / Otsile Clutchia Senokwane
.” 2012. Thesis, North-West University. Accessed February 27, 2021.
http://hdl.handle.net/10394/15832.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Senokwane, Otsile Clutricia. “Effectiveness of managing the North West motor vehicles licencing revenue systems / Otsile Clutchia Senokwane
.” 2012. Web. 27 Feb 2021.
Vancouver:
Senokwane OC. Effectiveness of managing the North West motor vehicles licencing revenue systems / Otsile Clutchia Senokwane
. [Internet] [Thesis]. North-West University; 2012. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10394/15832.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Senokwane OC. Effectiveness of managing the North West motor vehicles licencing revenue systems / Otsile Clutchia Senokwane
. [Thesis]. North-West University; 2012. Available from: http://hdl.handle.net/10394/15832
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Central Florida
9.
Morelle, Dylan.
Live Versus Virtual: Cost Benefit Analysis for Applying Simulation Towards Army Aviator Flight Minimums.
Degree: 2016, University of Central Florida
URL: https://stars.library.ucf.edu/etd/5328
► The Longbow Crew Trainer (LCT) is a cost effective, safe alternative to live training in the AH-64D/E Apache helicopter. Current Army doctrine and regulations have…
(more)
▼ The Longbow Crew Trainer (LCT) is a cost effective, safe alternative to live training in the AH-64D/E Apache helicopter. Current Army doctrine and regulations have provisions for the limited use of simulator in lieu of aircraft hours toward semiannual minimum flight hour requirements. With the defense budget in decline, the Army must find innovative, cost effective methods to conduct realistic, relevant training to sustain proficiency in their warfighting capabilities. The LCT fully replicates the cockpit environment through training scenarios for requisite crew tasks and missions in a realistic, modular, and transportable solution. An attack helicopter crew can safely train in customizable scenarios ranging from basic aviation tasks to crew-level missions and gunneries. The Army is currently aligning one LCT per attack battalion under the Aviation Restructure Initiative. There are 20 Armed Reconnaissance Battalions/Squadrons in the active component with approximately 35 aircrews per battalion. The premise of this study was to review cost benefits of training in a virtual environment over a live environment while exploring the effects on proficiency. The difference in cost per hour between an AH-64D and the LCT is approximately 3,998. Using this figure and the semiannual flight hour requirements from the current Aircrew Training Manual in a weighted average between Flight Activity Category (FAC) 1 and FAC 2 pilot's flight minimum requirements formed the basis for four models: Low, Status Quo (baseline), Moderate, and High Virtual Simulation Models. This study found that while the High Virtual Simulation Model resulted in the greatest cost savings, the current budget and previous literature does not require such drastic measures. The Low Virtual Simulation Model resulted in higher costs. Therefore, the Moderate Virtual Simulation Model, proved most relevant to budget analysts, aviation unit commanders, and pilots by decreasing annual costs by an estimated 76.2 million without degrading proficiency.
Advisors/Committee Members: Kincaid, J. Peter.
Subjects/Keywords: Military Vehicles
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APA ·
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Manager
APA (6th Edition):
Morelle, D. (2016). Live Versus Virtual: Cost Benefit Analysis for Applying Simulation Towards Army Aviator Flight Minimums. (Masters Thesis). University of Central Florida. Retrieved from https://stars.library.ucf.edu/etd/5328
Chicago Manual of Style (16th Edition):
Morelle, Dylan. “Live Versus Virtual: Cost Benefit Analysis for Applying Simulation Towards Army Aviator Flight Minimums.” 2016. Masters Thesis, University of Central Florida. Accessed February 27, 2021.
https://stars.library.ucf.edu/etd/5328.
MLA Handbook (7th Edition):
Morelle, Dylan. “Live Versus Virtual: Cost Benefit Analysis for Applying Simulation Towards Army Aviator Flight Minimums.” 2016. Web. 27 Feb 2021.
Vancouver:
Morelle D. Live Versus Virtual: Cost Benefit Analysis for Applying Simulation Towards Army Aviator Flight Minimums. [Internet] [Masters thesis]. University of Central Florida; 2016. [cited 2021 Feb 27].
Available from: https://stars.library.ucf.edu/etd/5328.
Council of Science Editors:
Morelle D. Live Versus Virtual: Cost Benefit Analysis for Applying Simulation Towards Army Aviator Flight Minimums. [Masters Thesis]. University of Central Florida; 2016. Available from: https://stars.library.ucf.edu/etd/5328
Rutgers University
10.
Powar, Gayatri, 1988-.
Calculation of collision probability for autonomous vehicles using trajectory prediction.
Degree: MS, Electrical and Computer Engineering, 2016, Rutgers University
URL: https://rucore.libraries.rutgers.edu/rutgers-lib/51437/
► The aim of this thesis is to create a decision making algorithm. The goal would be to check the feasibility of the current maneuver by…
(more)
▼ The aim of this thesis is to create a decision making algorithm. The goal would be to check the feasibility of the current maneuver by nding the probability of collision between the
subject and target
vehicles. These outputs can be used by other Advanced Driver Assistance System (ADAS) features including path planner, lateral control, longitudinal control, etc. We make use of some sensors like camera/radar (simulated data) and fuse these together for better estimation of measurements. With earlier experience with cameras, they are really poor at giving longitudinal distances whereas radars give more accurate measurements longitudinally. Using these measurements about targets ahead in the environment, we predict the trajectories of the obstacles/targets as well as the
subject vehicle (autonomous vehicle). The algorithm predicts if it is safe to continue with the current maneuver in the near future for several seconds ahead of time, and makes the decision if the maneuver is possible. The results are obtained using probabilistic approach whether the future trajectories are going to collide. The thesis primarily focuses on target tracking, e cient sensor data fusion and future collision estimation. With the lessons learnt using existing literature an e cient approach is employed. The simulation is performed in PreScan simulator and MATLAB. Enhancements in the sensor data fusion using standby measurements and quasi-decentralized approach to combine measurements to yield improved results and achieve better scalability are proposed and implemented.
Advisors/Committee Members: Gajic, Zoran (chair), Lindqvist, Janne (internal member), Baruh, Haim (internal member).
Subjects/Keywords: Autonomous vehicles
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APA (6th Edition):
Powar, Gayatri, 1. (2016). Calculation of collision probability for autonomous vehicles using trajectory prediction. (Masters Thesis). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/51437/
Chicago Manual of Style (16th Edition):
Powar, Gayatri, 1988-. “Calculation of collision probability for autonomous vehicles using trajectory prediction.” 2016. Masters Thesis, Rutgers University. Accessed February 27, 2021.
https://rucore.libraries.rutgers.edu/rutgers-lib/51437/.
MLA Handbook (7th Edition):
Powar, Gayatri, 1988-. “Calculation of collision probability for autonomous vehicles using trajectory prediction.” 2016. Web. 27 Feb 2021.
Vancouver:
Powar, Gayatri 1. Calculation of collision probability for autonomous vehicles using trajectory prediction. [Internet] [Masters thesis]. Rutgers University; 2016. [cited 2021 Feb 27].
Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/51437/.
Council of Science Editors:
Powar, Gayatri 1. Calculation of collision probability for autonomous vehicles using trajectory prediction. [Masters Thesis]. Rutgers University; 2016. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/51437/
University of KwaZulu-Natal
11.
Woods, Matthew Allan Ray.
Development of a comprehensive energy model to simulate the energy efficiency of a battery electric vehicle to allow for prototype design optimisation and validation.
Degree: 2017, University of KwaZulu-Natal
URL: https://researchspace.ukzn.ac.za/handle/10413/18387
► This dissertation describes the development of an energy model of a battery electric vehicle (BEV) to assist designers in evaluating the impact of overall energy…
(more)
▼ This dissertation describes the development of an energy model of a battery electric vehicle (BEV) to assist designers in evaluating the impact of overall energy efficiency on vehicle performance. Energy efficiency is a crucial metric for BEVs as it defines the driving range of the vehicle and optimises the limited amount of energy available from the on-board battery pack, typically the most expensive component of the vehicle. Energy modelling also provides other useful information to the designer, such as the range of the vehicle according to legislative drive cycles and the maximum torque required from the motor. An accurate, fast and efficient model is therefore required to simulate BEVs in the early stages of design and for prototype validation.
An extensive investigation into BEV modelling and the mechanisms of energy losses within BEVs was conducted. Existing literature was studied to characterise the effect of operating conditions on the efficiency of each mechanism, as well as investigating existing modelling techniques used to simulate each energy loss. A complete vehicle model was built by considering multiple domain modelling methods and the flow of energy between components in both mechanical and electrical domains.
Simscape™, a MathWorks MATLAB™ tool, was used to build a physics based, forward facing model comprising a combination of custom coded blocks representing the flow of energy from the battery pack to the wheels. The acceleration and speed response of the vehicle was determined over a selected drive cycle, based on vehicle parameters. The model is applicable to normal driving conditions where the power of the motor does not exceed its continuous rating. The model relies on datasheet or non-proprietary parameters. These parameters can be changed depending on the architecture of the BEV and the exact components used, providing model flexibility.
The primary model input is a drive cycle and the primary model output is range as well as the dynamic response of other metrics such as battery voltage and motor torque. The energy loss mechanisms are then assessed qualitatively and quantitatively to allow vehicle designers to determine effective strategies to increase the overall energy efficiency of the vehicle.
The Mamba BEV, a small, high-power, commercially viable electric vehicle with a 21 kWh lithium-ion battery was simulated using the developed model. As the author was involved in the design and development of the vehicle, required vehicle parameters were easily obtained from manufacturers. The range of the vehicle was determined using the World-Harmonised Light Duty
Vehicles Test Procedure and provided an estimated range of 285.3 km for the standard cycle and 420.8 km for the city cycle.
Advisors/Committee Members: Bemont, Clinton Pierre. (advisor), Brooks, Michael John. (advisor), Pitot de la Beaujardiere, Jean-Francois Philippe. (advisor).
Subjects/Keywords: Energy efficiency.; Prototype vehicles.; Electric vehicles.
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APA (6th Edition):
Woods, M. A. R. (2017). Development of a comprehensive energy model to simulate the energy efficiency of a battery electric vehicle to allow for prototype design optimisation and validation. (Thesis). University of KwaZulu-Natal. Retrieved from https://researchspace.ukzn.ac.za/handle/10413/18387
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):
Woods, Matthew Allan Ray. “Development of a comprehensive energy model to simulate the energy efficiency of a battery electric vehicle to allow for prototype design optimisation and validation.” 2017. Thesis, University of KwaZulu-Natal. Accessed February 27, 2021.
https://researchspace.ukzn.ac.za/handle/10413/18387.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Woods, Matthew Allan Ray. “Development of a comprehensive energy model to simulate the energy efficiency of a battery electric vehicle to allow for prototype design optimisation and validation.” 2017. Web. 27 Feb 2021.
Vancouver:
Woods MAR. Development of a comprehensive energy model to simulate the energy efficiency of a battery electric vehicle to allow for prototype design optimisation and validation. [Internet] [Thesis]. University of KwaZulu-Natal; 2017. [cited 2021 Feb 27].
Available from: https://researchspace.ukzn.ac.za/handle/10413/18387.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Woods MAR. Development of a comprehensive energy model to simulate the energy efficiency of a battery electric vehicle to allow for prototype design optimisation and validation. [Thesis]. University of KwaZulu-Natal; 2017. Available from: https://researchspace.ukzn.ac.za/handle/10413/18387
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
12.
Pütz, Fabian.
The impact of connected automated vehicles on the insurance sector: a comprehensive analysis of legal and risk factors.
Degree: 2019, Univeristy of Limerick
URL: http://hdl.handle.net/10344/8470
► The introduction of connected automated vehicles (CAV) offers significant societal benefits and economic opportunities while similarly posing major challenges to society, businesses, research, and regulatory…
(more)
▼ The introduction of connected automated
vehicles (CAV) offers significant societal benefits and economic opportunities while similarly posing major challenges to society, businesses, research, and regulatory bodies. In addition to directly affected markets, such as the automobile manufacturing and transportation sectors, insurance is one of the core downstream sectors acutely sensitive to the adoption of this emerging technology. In fact, the adoption of CAV technology has the potential to profoundly affect existing business models of insurers with key triggers arising from changes to liability frameworks, a changing risk landscape and changes of customer interfaces and market structure induced by a shift of societal mobility approaches.
Due to the facilitating role of insurers for the introduction of new technology, the strategic implications for this stakeholder have to be understood holistically and proactively to ensure a seamless introduction. Given that insurance as a
subject of academic research is interdisciplinary by character and since the strategic implications emerging with CAV technology originate from both legal and risk factors, this thesis provides a multidimensional research approach linking different research disciplines and research methods.
Using the current German liability and insurance framework as a case study, this thesis confirms that the methodology to allocate liability based on the strict liability of the vehicle owner is generally compatible with peculiarities of automated driving. However, adjustments to the existing framework are necessary to maintain an adequate level of claimant protection for accidents caused by automated
vehicles. In addition, this thesis highlights that an adequate ultimate allocation of liability costs is potentially inhibited because of several barriers that hinder the shift of liability costs to the manufacturer side. This is particularly because the ability and motivation of motor insurers to conduct subrogation claims is negatively affected by a lack of required technical and engineering know-how and because market-wide conduction of subrogation claims would erode the business volume of motor insurance.
In addition to legal challenges arising from existing liability and insurance frameworks, this thesis analyses data-driven use cases to present the access to in-vehicle data as another core CAV-related legal question from an insurance-perspective. Finding a status quo where OEMs begin to leverage their superior access to in-vehicle data for the expansion of their own business models, the analysis underlines that the increasing interconnection of modern automobile
vehicles will have a significant strategic impact on insurance-related service offerings. However, by analysing this status quo from a business ecosystem perspective, it becomes apparent that taking the role of a physical dominator to extract maximum short-term value might be an obvious but not necessarily successful approach for OEMs on long-term. This is because the shift from a goods-dominant…
Advisors/Committee Members: Murphy, Finbarr, Mullins, Martin.
Subjects/Keywords: automated vehicles; insurance; connected automated vehicles (CAV)
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APA (6th Edition):
Pütz, F. (2019). The impact of connected automated vehicles on the insurance sector: a comprehensive analysis of legal and risk factors. (Thesis). Univeristy of Limerick. Retrieved from http://hdl.handle.net/10344/8470
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):
Pütz, Fabian. “The impact of connected automated vehicles on the insurance sector: a comprehensive analysis of legal and risk factors.” 2019. Thesis, Univeristy of Limerick. Accessed February 27, 2021.
http://hdl.handle.net/10344/8470.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pütz, Fabian. “The impact of connected automated vehicles on the insurance sector: a comprehensive analysis of legal and risk factors.” 2019. Web. 27 Feb 2021.
Vancouver:
Pütz F. The impact of connected automated vehicles on the insurance sector: a comprehensive analysis of legal and risk factors. [Internet] [Thesis]. Univeristy of Limerick; 2019. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10344/8470.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pütz F. The impact of connected automated vehicles on the insurance sector: a comprehensive analysis of legal and risk factors. [Thesis]. Univeristy of Limerick; 2019. Available from: http://hdl.handle.net/10344/8470
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Embry-Riddle Aeronautical University
13.
Scheppa, Michael D.
Preliminary Design of an Asteroid Hopping Mission.
Degree: MSin Aerospace Engineering, Aerospace Engineering, 2011, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/122
► In 2010, NASA announced that its new vision is to support private space launch operations. It is anticipated that this new direction will create…
(more)
▼ In 2010, NASA announced that its new vision is to support private space launch operations. It is anticipated that this new direction will create the need for new and innovative ideas that push the current boundaries of space exploration and contain the promise of substantial gain, both in research and capital.
The purpose of the study is to plan and estimate the feasibility of a mission to visit a number of near Earth asteroids (NEAs). The mission would take place before the end of the 21st century, and would only use commercially available technology. Throughout the mission design process, while holding astronaut safety paramount, it was the goal to maximize the return while keeping the cost to a minimum. A mission of the nature would appeal to the private space industry because it could be easily adapted and set into motion.
The mission design was divided into three main parts; mission timeline, vehicle design and power sources, with emphasis on nuclear and solar electric power, were investigated. The timeline and associated trajectories were initially selected using a numerical estimation and then optimized using Satellite Tool Kit (STK) 9.s's Design Explorer Optimizer [1]. Next, the spacecraft was design using commercially available parts that would support the mission requirements. The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) was and instrumental piece in maximizing the number of NEAs visited. Once the spacecraft was designed, acceptable power supply options were investigated. The VASIMR VX-200 requires 200 kilowatts of power to maintain thrust. This creates the need for a substantial power supply that consists of either a nuclear reactor of massive solar arrays.
STK 9.1's Design Explorer Optimizer was able to create a mission time line that allowed for the exploration of seven NEAs in under two years, while keeping the total mission ΔV under 71 kilometers per second. Based on these initial findings, it is determined that a mission of this nature is feasible and would could greatly benefit the private space industry.
Subjects/Keywords: Aeronautical Vehicles; Aerospace Engineering; Space Vehicles
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Scheppa, M. D. (2011). Preliminary Design of an Asteroid Hopping Mission. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/122
Chicago Manual of Style (16th Edition):
Scheppa, Michael D. “Preliminary Design of an Asteroid Hopping Mission.” 2011. Masters Thesis, Embry-Riddle Aeronautical University. Accessed February 27, 2021.
https://commons.erau.edu/edt/122.
MLA Handbook (7th Edition):
Scheppa, Michael D. “Preliminary Design of an Asteroid Hopping Mission.” 2011. Web. 27 Feb 2021.
Vancouver:
Scheppa MD. Preliminary Design of an Asteroid Hopping Mission. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2011. [cited 2021 Feb 27].
Available from: https://commons.erau.edu/edt/122.
Council of Science Editors:
Scheppa MD. Preliminary Design of an Asteroid Hopping Mission. [Masters Thesis]. Embry-Riddle Aeronautical University; 2011. Available from: https://commons.erau.edu/edt/122
14.
Saputa, Alexander Richard.
From well to wheel: a comprehensive comparison of traditional and alternative vehicle-fuel systems.
Degree: 2011, University of Tennessee – Chattanooga
URL: https://scholar.utc.edu/theses/2
► The objective of this project is to determine the advantages of the modern alternative fueled vehicles over traditional vehicles on a well to wheel basis.…
(more)
▼ The objective of this project is to determine the advantages of the modern alternative fueled
vehicles over traditional
vehicles on a well to wheel basis. Alternative fueled
vehicles are often lauded for their advantages during vehicle operation. This project evaluates
vehicles according to their relative values on a broader scale.
This project compares traditional, alternative fuel, and hybrid
vehicles for use in the U.S. from the complete fuel cycle standpoint using points of comparison that include energy consumption, greenhouse gas emissions, and the emission of five principal pollutants. GREET software used in this study was developed at Argonne National Laboratory specifically for modeling these types of points. Financial considerations and social benefits outside the purview of GREET are also incorporated. The comparisons account for the attributes of each vehicle-fuel combination considering the feedstock, fuel production, and vehicle operation stages in order to provide a complete view of the fuel cycle. By comparing
vehicles in this way, this project highlights the advantages of each combination and provides insight into the overall effect of operating these vehicle technologies.
Advisors/Committee Members: Jones, Francis J., Alp, Neslihan, Thomas, Tricia A., College of Engineering and Computer Science.
Subjects/Keywords: Alternative fuel vehicles; Hybrid electric vehicles
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APA ·
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Export
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Manager
APA (6th Edition):
Saputa, A. R. (2011). From well to wheel: a comprehensive comparison of traditional and alternative vehicle-fuel systems. (Masters Thesis). University of Tennessee – Chattanooga. Retrieved from https://scholar.utc.edu/theses/2
Chicago Manual of Style (16th Edition):
Saputa, Alexander Richard. “From well to wheel: a comprehensive comparison of traditional and alternative vehicle-fuel systems.” 2011. Masters Thesis, University of Tennessee – Chattanooga. Accessed February 27, 2021.
https://scholar.utc.edu/theses/2.
MLA Handbook (7th Edition):
Saputa, Alexander Richard. “From well to wheel: a comprehensive comparison of traditional and alternative vehicle-fuel systems.” 2011. Web. 27 Feb 2021.
Vancouver:
Saputa AR. From well to wheel: a comprehensive comparison of traditional and alternative vehicle-fuel systems. [Internet] [Masters thesis]. University of Tennessee – Chattanooga; 2011. [cited 2021 Feb 27].
Available from: https://scholar.utc.edu/theses/2.
Council of Science Editors:
Saputa AR. From well to wheel: a comprehensive comparison of traditional and alternative vehicle-fuel systems. [Masters Thesis]. University of Tennessee – Chattanooga; 2011. Available from: https://scholar.utc.edu/theses/2
Anna University
15.
Mahalingam P.
Model for taxicab fares;.
Degree: Model for taxicab fares, 2015, Anna University
URL: http://shodhganga.inflibnet.ac.in/handle/10603/33699
► newlineIn Chennai auto rickshaws autos are the For Hire Vehicles newline FHV or taxis An estimated 50 000 plus autos move about 1 5 million…
(more)
▼ newlineIn Chennai auto rickshaws autos are the For
Hire Vehicles newline FHV or taxis An estimated 50 000 plus autos
move about 1 5 million newlinepeople a day as the to door transit
The behaviour of auto drivers newlinecontinues to be a subject for
the media There has been no academic newlineresearch addressing
this problem This thesis attempts to fill this gap newlineThe
problem has to be seen as of a system with all stake
newlineholdersand#151;drivers passengers owners manufacturers
public capital and newlineregulators While regulation and
enforcement are important the fare can newlinebe scientifically
designed to reward desired behavior and extinguish newlinedeviant
behaviour of any stake holder newlinePrice is used extensively to
influence behaviour of people in newlineProducts services and
utilities A and#145;fareand#146; is a price for the FHV service A
newlinegood fare structure can satisfy the needs of all stake
holders The more newlinethe visible the factors in a fare the
better it will influence the behaviour newlinethe stake holders
newline
appendix p166-170, reference
p172-176.
Advisors/Committee Members: Supriya M V.
Subjects/Keywords: For Hire Vehicles
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
P, M. (2015). Model for taxicab fares;. (Thesis). Anna University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/33699
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):
P, Mahalingam. “Model for taxicab fares;.” 2015. Thesis, Anna University. Accessed February 27, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/33699.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
P, Mahalingam. “Model for taxicab fares;.” 2015. Web. 27 Feb 2021.
Vancouver:
P M. Model for taxicab fares;. [Internet] [Thesis]. Anna University; 2015. [cited 2021 Feb 27].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/33699.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
P M. Model for taxicab fares;. [Thesis]. Anna University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/33699
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Embry-Riddle Aeronautical University
16.
Smith, Casey L.
The Effects of Familiarity and Persuasion on Risk Assessment.
Degree: MSin Human Factors & Systems, Human Factors and Systems, 2012, Embry-Riddle Aeronautical University
URL: https://commons.erau.edu/edt/131
► Cognitive biases influence decisions and the analyses of risk. They are often derived from two separate processes: bias based on familiarity (familiarity bias) and…
(more)
▼ Cognitive biases influence decisions and the analyses of risk. They are often derived from two separate processes: bias based on familiarity (familiarity bias) and bias as the result of influences from outside sources (persuasion bias). Research suggests that familiarity-based bias may lead to acceptance of an activity's drawbacks and a leniency of its risks.
In addition, research has tried to measure and analyze different types of biases individually, but few have compared the interactions of more than one bias at once. Because different biases may derive from different mental phenomena it is important to tease out the distinctions, and observe how they interact with each other. This study conducted an empirical test that attempted to answer the following questions: Does familiarity and affiliation of the topics of radiation, low-earth orbit, and space travel result in a lesser concern, and therefore leniency, of the risks involved? How effective is on-the-spot persuasion when discussing risk assessment? How well does increased familiarity of a high-risk activity protect against on-the-spot persuasion?
Surveys were distributed to 409 students from Embry-Riddle Aeronautical University. The surveys were meant to collect the familiarity and preference levels of the participants regarding commercial space travel; they were also meant to expose the participants to persuasion conditions in order to influence their perceptions of risk. Non-parametric tests were performed in order to test the interactions. Data show that no significant bias occurred as the result of persuasion; however significance was detected between participants with high familiarity and low familiarity when they were not intentionally persuaded. Implications of these results are included.
Subjects/Keywords: Psychology; Space Vehicles
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APA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Smith, C. L. (2012). The Effects of Familiarity and Persuasion on Risk Assessment. (Masters Thesis). Embry-Riddle Aeronautical University. Retrieved from https://commons.erau.edu/edt/131
Chicago Manual of Style (16th Edition):
Smith, Casey L. “The Effects of Familiarity and Persuasion on Risk Assessment.” 2012. Masters Thesis, Embry-Riddle Aeronautical University. Accessed February 27, 2021.
https://commons.erau.edu/edt/131.
MLA Handbook (7th Edition):
Smith, Casey L. “The Effects of Familiarity and Persuasion on Risk Assessment.” 2012. Web. 27 Feb 2021.
Vancouver:
Smith CL. The Effects of Familiarity and Persuasion on Risk Assessment. [Internet] [Masters thesis]. Embry-Riddle Aeronautical University; 2012. [cited 2021 Feb 27].
Available from: https://commons.erau.edu/edt/131.
Council of Science Editors:
Smith CL. The Effects of Familiarity and Persuasion on Risk Assessment. [Masters Thesis]. Embry-Riddle Aeronautical University; 2012. Available from: https://commons.erau.edu/edt/131
North-West University
17.
Zide, George Sonwabo.
An analysis of the demand for new passenger vehicles in South Africa (1995-2005) / Sonwabo Zide
.
Degree: 2012, North-West University
URL: http://hdl.handle.net/10394/10194
► This dissertation analyses the determinants of demand for new passenger vehicles in South Africa over a ten-year period, between 1995 and 2005. The following investigation…
(more)
▼ This dissertation analyses the determinants of demand for new passenger vehicles in South Africa over a ten-year period, between 1995 and 2005. The following investigation into the determinants of demand for new passenger cars, is based both on a statistical and empirical analysis of the performance of the South African new passenger car market. Firstly, in Chapter 2 a brief history of the South African motor in industry provides a background for the analysis which follows in this dissertation and gives some insight into the historical developments that created the structure of the industry during the period analysed by the study. The theoretical components of the thesis focus on the macro-economic theory of demand, which seeks to explain the influences which determine consumer demand when purchasing durable goods and more specifically new passenger cars. Chapter 3 explains how consumers trade off preferences and substitutes in their efforts to maximise their utility. When comparing the general theory of
demand to the theory of demand for durable goods and more specifically the theory of demand for new passenger cars, it is demonstrated that the theory of demand for new passenger cars is inherently different to that of non-durable goods. New passenger cars and other durable goods require a relatively higher investment, last longer than non-durable goods and literally retain some of their value, as they get older. Chapter 3 creates a theoretical foundation upon which the determinants of demand for passenger cars will be analysed in Chapter 4. Chapter 4 forms the base upon which the South African New Passenger Car Market will to be analysed. In Chapter 4 the study statistically and graphically analyses the primary economic determinants of demand for new passenger cars. The analyses first present the relationship between price and new passenger car demand. It was found that demand for new passenger cars was price elastic. It was also identified that price elasticity of demand changed over the ten-year period analysed. Next, the impact of population growth and personal disposable income on new passenger car demand was analysed. It was discovered that should the population grow faster than the economy; relative prices unchanged, personal disposable income will decline and thereby affect desired stocks of new passenger cars negatively. The effect of disposable income on the sale of new passenger cars was found to be income inelastic. Income elasticity also, however displayed signs of change over the analysed period. The effect of the rate of interest on the demand for the new passenger cars was also analysed. The analysis indicated that changes in interest rates resulted in changes of various proportions in all rates of interest in the economy; such an effect filtered through to the new passenger car market. After this, the effect of GDP on the demand for new passenger cars was examined. The examination found that changes in the new passenger car market correlated very closely with GDP growth changes, hence GDP changes…
Subjects/Keywords: Analysis;
Passenger vehicles
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Export
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Manager
APA (6th Edition):
Zide, G. S. (2012). An analysis of the demand for new passenger vehicles in South Africa (1995-2005) / Sonwabo Zide
. (Thesis). North-West University. Retrieved from http://hdl.handle.net/10394/10194
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):
Zide, George Sonwabo. “An analysis of the demand for new passenger vehicles in South Africa (1995-2005) / Sonwabo Zide
.” 2012. Thesis, North-West University. Accessed February 27, 2021.
http://hdl.handle.net/10394/10194.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zide, George Sonwabo. “An analysis of the demand for new passenger vehicles in South Africa (1995-2005) / Sonwabo Zide
.” 2012. Web. 27 Feb 2021.
Vancouver:
Zide GS. An analysis of the demand for new passenger vehicles in South Africa (1995-2005) / Sonwabo Zide
. [Internet] [Thesis]. North-West University; 2012. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10394/10194.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zide GS. An analysis of the demand for new passenger vehicles in South Africa (1995-2005) / Sonwabo Zide
. [Thesis]. North-West University; 2012. Available from: http://hdl.handle.net/10394/10194
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Colorado
18.
Howard, Micah A.
Finite Element Modeling and Optimization of High-Speed Aerothermoelastic Systems.
Degree: PhD, Aerospace Engineering Sciences, 2010, University of Colorado
URL: https://scholar.colorado.edu/asen_gradetds/9
► The design of supersonic and hypersonic aerospace vehicles is by nature a multi-disciplinary problem requiring the close integration of compressible fluid dynamics, heat transfer,…
(more)
▼ The design of supersonic and hypersonic aerospace
vehicles is by nature a multi-disciplinary problem requiring the close integration of compressible fluid dynamics, heat transfer, and structural dynamics. The transient flow around the body must be accurately characterized in order to assess its effect on the thermal and structural responses; conversely, the thermal and structural behavior may significantly alter the aerodynamic performance. The core of this dissertation effort is concerned with the development and demonstration of an analysis and design capability for the aerothermoelastic behavior of high-speed aerospace
vehicles. This nominally involves coupling of the compressible Navier-Stokes equations for the fluid dynamics, the transient heat equation for the thermal response, and the elastodynamic equations for the structural dynamics. The streamline upwind Petrov-Galerkin (SUPG) stabilized finite element method is used for solving the compressible flow problem. Both a standard Galerkin and stabilized Galerkin gradient least squares (GGLS) finite element method are utilized for solving the heat equation, and a standard Galerkin method is used for solving the elastodynamic equations. The transient and steady-state responses of a problem are determined via a single, simultaneously coupled nonlinear system, thus bypassing accuracy and stability issues of classical staggered multi-physics coupling strategies. A gradient-based optimization framework is developed for designing transient coupled aerothermoelastic systems via adjoint-based sensitivity analysis. This framework is used to optimize the design of a structure in regard to thermal and structural performance. The efforts of this thesis have yielded a state-of-the-art approach for coupled aerothermoelastic analysis and design optimization.
Advisors/Committee Members: Kurt Maute, Carlos Felippa, Brian Argrow.
Subjects/Keywords: aerospace vehicles; aerothermoelastic behavior; thermal and structural performance; Aeronautical Vehicles; Aerospace Engineering; Space Vehicles
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APA (6th Edition):
Howard, M. A. (2010). Finite Element Modeling and Optimization of High-Speed Aerothermoelastic Systems. (Doctoral Dissertation). University of Colorado. Retrieved from https://scholar.colorado.edu/asen_gradetds/9
Chicago Manual of Style (16th Edition):
Howard, Micah A. “Finite Element Modeling and Optimization of High-Speed Aerothermoelastic Systems.” 2010. Doctoral Dissertation, University of Colorado. Accessed February 27, 2021.
https://scholar.colorado.edu/asen_gradetds/9.
MLA Handbook (7th Edition):
Howard, Micah A. “Finite Element Modeling and Optimization of High-Speed Aerothermoelastic Systems.” 2010. Web. 27 Feb 2021.
Vancouver:
Howard MA. Finite Element Modeling and Optimization of High-Speed Aerothermoelastic Systems. [Internet] [Doctoral dissertation]. University of Colorado; 2010. [cited 2021 Feb 27].
Available from: https://scholar.colorado.edu/asen_gradetds/9.
Council of Science Editors:
Howard MA. Finite Element Modeling and Optimization of High-Speed Aerothermoelastic Systems. [Doctoral Dissertation]. University of Colorado; 2010. Available from: https://scholar.colorado.edu/asen_gradetds/9
Oregon State University
19.
Shepherd, Jack F. (Jack Finley).
A hierarchical neuro-evolutionary approach to small quadrotor control.
Degree: MS, Mechanical Engineering, 2010, Oregon State University
URL: http://hdl.handle.net/1957/14167
► Quadrotors are unique among Micro Aerial Vehicles in providing excellent maneuverability (as opposed to winged flight),while maintaing a simple mechanical construction (as opposed to helicopters).…
(more)
▼ Quadrotors are unique among Micro Aerial
Vehicles in providing excellent maneuverability (as opposed to winged flight),while maintaing a simple mechanical construction (as opposed to helicopters). This mechanical simplicity comes at a cost of increased controller complexity. Quadrotors are inherently unstable, in the sense that they are essentially unflyable by a human without stability assistance. Prior work has developed model-based controllers that successfully control quadrotors operating near hover conditions, but small quadrotor dynamics make such control more difficult.
In this thesis,we present a hierarchical neuro-controller for small (0.5 kg) quadrotor control. The first stage of control aims to stabilize the craft and outputs rotor speeds based on a requested attitude (pitch, roll, yaw, and vertical velocity). This controller is developed in four parts around each of the variables, initially training them to achieve results similar to a PID controller. The four parts are then combined and the controller is trained further to increase robustness. The second stage of control aims to achieve a requested(x,y,z) position by providing the first stage with the appropriate attitude.
The simulation results show that stable quadrotor control is achieved through this control architecture. In addition, the results show that the hierarchical control approach recovers from discrete angle disturbances over an order of magnitude faster than a basic PID controller, and can even recover from a disturbance that knocks the craft upside down. Finally, using the average volume used to maintain a stable hover, we show that the hierarchical controller provides stable flight in the presence of 5 times more sensor noise and 8 times more actuator noise as compared to the PID controller.
Advisors/Committee Members: Tumer, Kagan (advisor), Batten, Belinda (committee member).
Subjects/Keywords: Adaptive Control; Micro air vehicles
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APA (6th Edition):
Shepherd, J. F. (. F. (2010). A hierarchical neuro-evolutionary approach to small quadrotor control. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/14167
Chicago Manual of Style (16th Edition):
Shepherd, Jack F (Jack Finley). “A hierarchical neuro-evolutionary approach to small quadrotor control.” 2010. Masters Thesis, Oregon State University. Accessed February 27, 2021.
http://hdl.handle.net/1957/14167.
MLA Handbook (7th Edition):
Shepherd, Jack F (Jack Finley). “A hierarchical neuro-evolutionary approach to small quadrotor control.” 2010. Web. 27 Feb 2021.
Vancouver:
Shepherd JF(F. A hierarchical neuro-evolutionary approach to small quadrotor control. [Internet] [Masters thesis]. Oregon State University; 2010. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/1957/14167.
Council of Science Editors:
Shepherd JF(F. A hierarchical neuro-evolutionary approach to small quadrotor control. [Masters Thesis]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/14167
University of Utah
20.
Flinders, Roger Marc.
Microstructural control of silicon carbide for ballistic applications.
Degree: MS;, Materials Science & Engineering;, 2008, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/1001/rec/772
► Silicon carbide (SiC), due to its low areal density and ability to stop tungsten carbide-cored bullets, is the ceramic armor of choice against heavy threats.…
(more)
▼ Silicon carbide (SiC), due to its low areal density and ability to stop tungsten carbide-cored bullets, is the ceramic armor of choice against heavy threats. Prochazka showed that SiC could be densified without using a liquid phase at about 2100°C using boron and carbon as additives, resulting in clean grain boundaries which give the material high hardness and excellent corrosion resistance. Well known liquid phase additives, such as yttrium aluminum garnet (YAG), Al, and Al-B-C, while lacking corrosion resistance, are all candidates for SiC-based armor and are known to increase fracture toughness. There is a hardness-toughness trade-off in silicon carbide that is related to fracture mode. The hardness of solid state SiC is essentially independent of grain size since it fractures transgranularly. While microcrack toughening can increase the toughness of SiC without decreasing hardness, additives can be used to engineer the amount of intergranular fracture and thereby increase the long-crack fracture toughness. Materials with single-edge precracked beam (SEPB) fracture toughness ranging between 2.5 and 8.5 MPam1 / 2 were prepared. To achieve high toughness it was necessary to have both intergranular fracture and elongated grains. Hardness decreased with increasing fracture toughness, independent of grain size for all but the finest grain sizes. Vickers hardness values generally decreased from 24 to 18 GPa as the toughness increased. Ballistic performance was independent of quasi-static fracture toughness and this parameter should not be pursued in making improved ceramic armor, at least at threat levels comparable to those tested. It was also shown that depth of penetration (DOP) was not a meaningful parameter for predicting the V 5 0 performance of advanced armor. DOP tests correlated with hardness measurements, which are not predictive of ballistic performance. Al was a better additive than Al-B-C or YAG for making advanced armor due to the low hot pressing temperature, better control of the microstructure and excellent ballistic performance. It can be made with a high Weibull modulus and appears to be an excellent choice when densifying SiC with applied pressure. A rich interplay in mechanical properties is available by understanding the roles of different additives in the densification process.
Subjects/Keywords: Ceramic materials; Armored vehicles
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APA (6th Edition):
Flinders, R. M. (2008). Microstructural control of silicon carbide for ballistic applications. (Masters Thesis). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/1001/rec/772
Chicago Manual of Style (16th Edition):
Flinders, Roger Marc. “Microstructural control of silicon carbide for ballistic applications.” 2008. Masters Thesis, University of Utah. Accessed February 27, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/1001/rec/772.
MLA Handbook (7th Edition):
Flinders, Roger Marc. “Microstructural control of silicon carbide for ballistic applications.” 2008. Web. 27 Feb 2021.
Vancouver:
Flinders RM. Microstructural control of silicon carbide for ballistic applications. [Internet] [Masters thesis]. University of Utah; 2008. [cited 2021 Feb 27].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/1001/rec/772.
Council of Science Editors:
Flinders RM. Microstructural control of silicon carbide for ballistic applications. [Masters Thesis]. University of Utah; 2008. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd2/id/1001/rec/772
University of Huddersfield
21.
Stetsyuk, V.
Experimental study of combustion and scalar mixing in swirling jet flows.
Degree: 2014, University of Huddersfield
URL: http://eprints.hud.ac.uk/id/eprint/27250/1/Stetsyuk-V-2014-PhD-Thesis.pdf
► Turbulent mixing of passive scalar field and combustion of gaseous fuel were studied in the context of a non-premixed isothermal and reacting swirling jets discharged…
(more)
▼ Turbulent mixing of passive scalar field and combustion of gaseous fuel were studied in the context of a non-premixed isothermal and reacting swirling jets discharged from a swirl-stabilised burner, as a function of swirl number. The rate of molecular mixing, which was quantified by the scalar dissipation rate was computed from measured scalar fields that were recorded by using Planar Laser Induced Fluorescence (PLIF) of acetone. The influence of the swirl number on the scalar mixing, unconditional and conditional scalar dissipation rate statistics was investigated. Scalar fields were measured with an average error of 3%. Scalar dissipation rate was measured with an average error of 12% after de-nosing.
The influence of swirl number on combustion characteristics was examined by using Rayleigh scattering with accuracy of 90%. The flow fields in non-reacting and reacting swirling jets were investigated by using Particle Image Velocimetry (PIV). The effect of swirl number on a recirculation zone was shown and discussed. The flow structures were evaluated by using Proper Orthogonal Decomposition.
Experimental assessment of presumed filtered density function and subgrid scale (SGS) scalar variance models that are being developed in the context of Large Eddy Simulation (LES) was performed by using the data obtained from measured scalar fields.
Measurements were performed in a flow formed by discharging a central jet in the annular stream of swirling air. This is a typical geometry used in swirl-stabilised burners where the central jet is the flow. The measurements were performed at a constant Reynolds number of 28662, based on the area-averaged velocity of 8.46 (m/s) at the exit of the swirl-stabilised burner and the diameter of the annular swirling stream of 50.8(mm). Three swirl numbers S = {0.3, 0.58, 1.07} of the annular swirling stream were considered.
Subjects/Keywords: TL Motor vehicles. Aeronautics. Astronautics
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APA (6th Edition):
Stetsyuk, V. (2014). Experimental study of combustion and scalar mixing in swirling jet flows. (Thesis). University of Huddersfield. Retrieved from http://eprints.hud.ac.uk/id/eprint/27250/1/Stetsyuk-V-2014-PhD-Thesis.pdf
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):
Stetsyuk, V. “Experimental study of combustion and scalar mixing in swirling jet flows.” 2014. Thesis, University of Huddersfield. Accessed February 27, 2021.
http://eprints.hud.ac.uk/id/eprint/27250/1/Stetsyuk-V-2014-PhD-Thesis.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Stetsyuk, V. “Experimental study of combustion and scalar mixing in swirling jet flows.” 2014. Web. 27 Feb 2021.
Vancouver:
Stetsyuk V. Experimental study of combustion and scalar mixing in swirling jet flows. [Internet] [Thesis]. University of Huddersfield; 2014. [cited 2021 Feb 27].
Available from: http://eprints.hud.ac.uk/id/eprint/27250/1/Stetsyuk-V-2014-PhD-Thesis.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Stetsyuk V. Experimental study of combustion and scalar mixing in swirling jet flows. [Thesis]. University of Huddersfield; 2014. Available from: http://eprints.hud.ac.uk/id/eprint/27250/1/Stetsyuk-V-2014-PhD-Thesis.pdf
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
22.
Lemos, Joewander Fernandes.
Poluição veicular: Avaliação dos impactos e benefícios ambientais com a renovação da frota veicular leve na cidade de São Paulo.
Degree: Mestrado, Energia, 2010, University of São Paulo
URL: http://www.teses.usp.br/teses/disponiveis/86/86131/tde-20082010-200639/
;
► Este estudo faz uma análise dos níveis de emissões veiculares relacionados com os problemas de poluição na cidade de São Paulo. Utilizando a metodologia denominada…
(more)
▼ Este estudo faz uma análise dos níveis de emissões veiculares relacionados com os problemas de poluição na cidade de São Paulo. Utilizando a metodologia denominada bottom-up, avalia de forma teórica os índices de poluentes que saem pelo tubo de escapamento da maior frota de veículos leves do país. São abordados tópicos relacionados com o dia-a-dia da cidade como crescimento da frota, combustíveis, transporte público, poluição atmosférica e seus efeitos à saúde e ainda a influência atmosférica na região. Foram feitas diversas simulações no decorrer do estudo denominadas de cenários, que são baseadas na simples, porém eficiente, aplicação da metodologia bottom-up que utiliza, para os cálculos, os fatores de emissões de acordo com a evolução das fases do PROCONVE para obter a quantidade de determinados poluentes emitido por ano. Os cenários permitem a substituição dos veículos mais velhos por veículos novos e apresentam resultados positivos para o meio ambiente, dentre eles aqueles que podem ser considerados como alternativas ousadas e outros podem ser vistos como alternativas mais conservadoras, mas todos demostram melhorias significativas para a qualidade do ar na cidade de são Paulo. A evolução das fases citadas trouxeram muitos benefícios ao meio ambiente por meio das novas tecnologias desenvolvidas e embarcadas nos veículos novos e que não deixam de ser a solução para o futuro, onde melhorias nas condições atmosféricas devem ser alcançadas. Questões como políticas públicas e legislações específicas para a substituição dos veículos velhos da rua, não saem da teoria. Na prática o trânsito está cada vez mais caótico, em partes pela quantidade de carros em péssimas condições de uso que ainda circulam e quebram todos os dias, afetando diretamente a qualidade do ar na metrópole paulista.
This study presents an analysis of the levels of vehicles emissions related to the pollution problems in São Paulo City. Using a methodology called bottom-up, this thesis presents a theoretical evaluation on the rates of pollutants coming out the exhaust pipe of the largest light vehicles fleet in Brazil. Issues related to daily city activities such as the fleet growth, fuels, public transportation, air pollution and its effects on the population health and the atmospheric influence in the region as well are presented. Simulations for scenarios drawn were based on a simple but efficient, implementation of bottom-up approach that employs, for calculations, the emission factors according to the changing phases of PROCONVE (the Brazilian National Program for the Pollution Control of Vehicles) for the amount of pollutants emitted per year. The scenarios consider that replacement of older vehicles by new ones is positive for the environment. Some scenarios may be considered as non-conservative alternatives and others can be seen as conservative, but all demonstrate significant improvements to the quality of air in São Paulo City. The evolution of the phases mentioned have brought many benefits to the environment through new…
Advisors/Committee Members: Matai, Patricia Helena Lara dos Santos.
Subjects/Keywords: Emissões veiculares; vehicles emissions
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APA (6th Edition):
Lemos, J. F. (2010). Poluição veicular: Avaliação dos impactos e benefícios ambientais com a renovação da frota veicular leve na cidade de São Paulo. (Masters Thesis). University of São Paulo. Retrieved from http://www.teses.usp.br/teses/disponiveis/86/86131/tde-20082010-200639/ ;
Chicago Manual of Style (16th Edition):
Lemos, Joewander Fernandes. “Poluição veicular: Avaliação dos impactos e benefícios ambientais com a renovação da frota veicular leve na cidade de São Paulo.” 2010. Masters Thesis, University of São Paulo. Accessed February 27, 2021.
http://www.teses.usp.br/teses/disponiveis/86/86131/tde-20082010-200639/ ;.
MLA Handbook (7th Edition):
Lemos, Joewander Fernandes. “Poluição veicular: Avaliação dos impactos e benefícios ambientais com a renovação da frota veicular leve na cidade de São Paulo.” 2010. Web. 27 Feb 2021.
Vancouver:
Lemos JF. Poluição veicular: Avaliação dos impactos e benefícios ambientais com a renovação da frota veicular leve na cidade de São Paulo. [Internet] [Masters thesis]. University of São Paulo; 2010. [cited 2021 Feb 27].
Available from: http://www.teses.usp.br/teses/disponiveis/86/86131/tde-20082010-200639/ ;.
Council of Science Editors:
Lemos JF. Poluição veicular: Avaliação dos impactos e benefícios ambientais com a renovação da frota veicular leve na cidade de São Paulo. [Masters Thesis]. University of São Paulo; 2010. Available from: http://www.teses.usp.br/teses/disponiveis/86/86131/tde-20082010-200639/ ;
University of Alberta
23.
Xie, Hui.
Dynamic Visual Servoing of Rotary Wing Unmanned Aerial
Vehicles.
Degree: PhD, Department of Electrical and Computer
Engineering, 2016, University of Alberta
URL: https://era.library.ualberta.ca/files/c70795766m
► Visual servoing uses camera feedback to control a robot's motion. In particular, Image-based Visual Servoing (IBVS) laws minimize an error signal defined in the image…
(more)
▼ Visual servoing uses camera feedback to control a
robot's motion. In particular, Image-based Visual Servoing (IBVS)
laws minimize an error signal defined in the image space. This
thesis considers IBVS design for rotary-wing Unmanned Aerial
Vehicles (UAVs). This is a challenging problem due to the nonlinear
perspective projection of image formation and the underactuated
nonlinear dynamics of the UAV. Traditional IBVS approaches
calculate the six Degrees of Freedom (DoF) velocity reference and
feed it into an inner velocity tracking loop. This approach cannot
be directly applied to IBVS of an underactuated UAV. To address
this issue, all IBVS laws developed in this thesis consider the
vehicle's dynamics, and this approach is termed as Dynamic
Image-based Visual Servoing (DIBVS). As compared to traditional
position regulation or tracking of UAVs, the nonlinear image
kinematics leads to systems structure which makes the control
problem challenging. In this thesis a state transformation is
proposed to eliminate the time derivative of attitude in the image
kinematics. This leads to a simpler system structure for control
design. The state transformation is obtained by solving a system of
first-order homogeneous Partial Differential Equations (PDEs). The
existence of solutions is proven and the general solution provided.
Using the transformed state, image moment features for a planar
target with multiple points or parallel lines are proposed. The
state transformation approach requires an attitude measurement
which is commonly available for UAVs. However, this measurement
contains small bias which results in state-transformation error and
introduces a disturbance into the translational velocity dynamics.
The state-transformation error is proven to be negligible. In this
thesis, a quadrotor is adopted as the UAV platform to validate the
proposed DIBVS schemes. The external force or torque is assumed to
be the product of an aerodynamic gain and the square of the Pulse
Width Modulation (PWM) signal to the Electronic Speed Controller
(ESC). This gain gradually decreases as battery voltage drops, and
the resulting reduction in thrust has a noticeable effect on UAV
motion in practise. The attitude bias, aerodynamic gain, and mass
of the UAV are treated as unknown constants. Both
Proportional-Integral-Derivative (PID) and adaptive DIBVS schemes
are proposed to stabilize image feature error and are robust to
this system uncertainty. Although in the transformed image state
the convergence appears to remain in the camera Field of View
(FoV), this may not be case for the actual camera image. To address
this issue, a visual servoing scheme based on a nested saturation
law is proposed to constrain the attitude of the
quadrotor.
Subjects/Keywords: Visual servoing; Unmanned aerial vehicles
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Manager
APA (6th Edition):
Xie, H. (2016). Dynamic Visual Servoing of Rotary Wing Unmanned Aerial
Vehicles. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/c70795766m
Chicago Manual of Style (16th Edition):
Xie, Hui. “Dynamic Visual Servoing of Rotary Wing Unmanned Aerial
Vehicles.” 2016. Doctoral Dissertation, University of Alberta. Accessed February 27, 2021.
https://era.library.ualberta.ca/files/c70795766m.
MLA Handbook (7th Edition):
Xie, Hui. “Dynamic Visual Servoing of Rotary Wing Unmanned Aerial
Vehicles.” 2016. Web. 27 Feb 2021.
Vancouver:
Xie H. Dynamic Visual Servoing of Rotary Wing Unmanned Aerial
Vehicles. [Internet] [Doctoral dissertation]. University of Alberta; 2016. [cited 2021 Feb 27].
Available from: https://era.library.ualberta.ca/files/c70795766m.
Council of Science Editors:
Xie H. Dynamic Visual Servoing of Rotary Wing Unmanned Aerial
Vehicles. [Doctoral Dissertation]. University of Alberta; 2016. Available from: https://era.library.ualberta.ca/files/c70795766m
University of Alberta
24.
Godbolt, Bryan M.
Experimental Nonlinear Control of a Helicopter Unmanned
Aerial Vehicle (UAV).
Degree: PhD, Department of Electrical and Computer
Engineering, 2013, University of Alberta
URL: https://era.library.ualberta.ca/files/vd66w1412
► Helicopter Unmanned Aerial Vehicles (UAVs) present a challenging control problem since their dynamics are nonlinear, underactuated and non-minimum phase. Although it is inherently an applied…
(more)
▼ Helicopter Unmanned Aerial Vehicles (UAVs) present a
challenging control problem since their dynamics are nonlinear,
underactuated and non-minimum phase. Although it is inherently an
applied research field, due to the difficulty of building and
maintaining an experimental platform relatively few experimental
results exist in the literature. The approach followed in this
thesis is to combine rigorous analysis with thorough experimental
testing. This testing ensures validity of the designs. We present
our experimental platform which is designed to be flexible so that
it can accommodate nonlinear control research. Existing accounts of
helicopter testbeds focus on hardware details. Since autopilot
software design and development also requires a significant
investment, we describe our implementation which has been released
as open source for the benefit of the community. Due to the
intractability of existing helicopter models, many control designs
use non-physical inputs. We propose simple, invertible expressions
relating the non-physical inputs to the physical inputs. In
particular, modelling of the main rotor typically results in
complicated expressions with extensive state dependence. While it
is unlikely that angular velocity has a significant influence on
the thrust, we show using experimental results that previous
attempts to simplify this expression using a hover assumption are
invalid during vertical flight. The platform is validated using a
model-based PID control law. This control is derived using
passivity to ignore nonlinear terms which do not affect stability.
Among the class of vehicles with similar flight capabilities,
helicopters possess a coupling between the rotational inputs and
translational dynamics which is unique. This coupling is sometimes
referred to as the Small Body Force (SBF) and is ignored in the
literature for controller synthesis. We derive an
experimentally-validated control design which accounts for the
effect of the tail rotor in the SBF. In addition, we show why the
contribution of the main rotor flapping in the SBF cannot be
compensated using the same approach, and give a robustness analysis
of their effect on the closed-loop. Finally, based on recent
results we propose a control design which accounts for state
constraints by enforcing bounds on translational velocity and
roll-pitch travel.
Subjects/Keywords: helicopter; control theory; unmanned vehicles
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Export
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Manager
APA (6th Edition):
Godbolt, B. M. (2013). Experimental Nonlinear Control of a Helicopter Unmanned
Aerial Vehicle (UAV). (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/vd66w1412
Chicago Manual of Style (16th Edition):
Godbolt, Bryan M. “Experimental Nonlinear Control of a Helicopter Unmanned
Aerial Vehicle (UAV).” 2013. Doctoral Dissertation, University of Alberta. Accessed February 27, 2021.
https://era.library.ualberta.ca/files/vd66w1412.
MLA Handbook (7th Edition):
Godbolt, Bryan M. “Experimental Nonlinear Control of a Helicopter Unmanned
Aerial Vehicle (UAV).” 2013. Web. 27 Feb 2021.
Vancouver:
Godbolt BM. Experimental Nonlinear Control of a Helicopter Unmanned
Aerial Vehicle (UAV). [Internet] [Doctoral dissertation]. University of Alberta; 2013. [cited 2021 Feb 27].
Available from: https://era.library.ualberta.ca/files/vd66w1412.
Council of Science Editors:
Godbolt BM. Experimental Nonlinear Control of a Helicopter Unmanned
Aerial Vehicle (UAV). [Doctoral Dissertation]. University of Alberta; 2013. Available from: https://era.library.ualberta.ca/files/vd66w1412
Universiteit Utrecht
25.
Boon, C.A.
The Transition Towards Electric Vehicles.
Degree: 2014, Universiteit Utrecht
URL: http://dspace.library.uu.nl:8080/handle/1874/289185
► In this study, the state of the transition towards electric vehicles in the Netherlands was assessed. It was shown that however electric vehicles are more…
(more)
▼ In this study, the state of the transition towards electric
vehicles in the Netherlands was assessed. It was shown that however electric
vehicles are more expensive to buy, the total cost of ownership of an electric vehicle is competitive for 20% of the consumers. This number is expected to increase in the future, since battery prices will decrease, and the cost of gasoline and diesel will increase. This results in a competitive TCO for the average consumer in between 2014 and 2018. Secondly, it was found the range of an average EV is 75% less compared to a conventional vehicle. The range however is expected to increase with 80% in 2020, due improved battery technology and decreased battery prices. It is hard to determine the minimal range consumers require, due to a difference in perception between what consumers think they need, and what they actually require. Therefore it is hard to predict at what point consumer will experience the range of an electric vehicle to be sufficient, however the outlook of an increased action radius will certainly contribute to that feeling.
The charging infrastructure in the Netherlands seems currently sufficient, with one charger for every two electric
vehicles. However, it was found that further increase of this charging network is biggest hurdle to take. The profitability of slow chargers is problematic due to a high level of rules and regulations, a lack of leadership, different point of interest and no consensus among stakeholders. Continuing this current path will withhold further development of the slow charge network, and can have disastrous consequences to the transition as a whole.
Advisors/Committee Members: Chu, Drs. R, Wempe, Prof Dr. J..
Subjects/Keywords: Electric vehicles; innovation; energy transition
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APA (6th Edition):
Boon, C. A. (2014). The Transition Towards Electric Vehicles. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/289185
Chicago Manual of Style (16th Edition):
Boon, C A. “The Transition Towards Electric Vehicles.” 2014. Masters Thesis, Universiteit Utrecht. Accessed February 27, 2021.
http://dspace.library.uu.nl:8080/handle/1874/289185.
MLA Handbook (7th Edition):
Boon, C A. “The Transition Towards Electric Vehicles.” 2014. Web. 27 Feb 2021.
Vancouver:
Boon CA. The Transition Towards Electric Vehicles. [Internet] [Masters thesis]. Universiteit Utrecht; 2014. [cited 2021 Feb 27].
Available from: http://dspace.library.uu.nl:8080/handle/1874/289185.
Council of Science Editors:
Boon CA. The Transition Towards Electric Vehicles. [Masters Thesis]. Universiteit Utrecht; 2014. Available from: http://dspace.library.uu.nl:8080/handle/1874/289185
Nelson Mandela Metropolitan University
26.
Chikosi, Gerald.
Autonomous guided vehicle for agricultural application.
Degree: Faculty of Engineering, the Built Environment and Information Technology, 2014, Nelson Mandela Metropolitan University
URL: http://hdl.handle.net/10948/d1016164
► With the world's population expected to reach nine billion by 2050, agricultural production will have to double to meet this growing demand. Hence, a need…
(more)
▼ With the world's population expected to reach nine billion by 2050, agricultural production will have to double to meet this growing demand. Hence, a need for better infrastructure to enhance farming efficiency becomes apparent. There are a number of solutions that have been developed to date that are commercially available. They range from genetically modified seeds and bio/green fertilizers to advanced farming machinery amongst others. However most of the farming equipment developed has drawbacks such as: heavy weight – this leads to reduced yields due to soil compacting; human dependency – constant monitoring and controlling is needed; light dependency – excludes usage during the night or when visibility is poor. Therefore, a possible solution will be researched to enhance the evolution of farming equipment. Furthermore, a model will be developed for testing and verifying the research.
Subjects/Keywords: Autonomous vehicles; Farm equipment
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APA (6th Edition):
Chikosi, G. (2014). Autonomous guided vehicle for agricultural application. (Thesis). Nelson Mandela Metropolitan University. Retrieved from http://hdl.handle.net/10948/d1016164
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):
Chikosi, Gerald. “Autonomous guided vehicle for agricultural application.” 2014. Thesis, Nelson Mandela Metropolitan University. Accessed February 27, 2021.
http://hdl.handle.net/10948/d1016164.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Chikosi, Gerald. “Autonomous guided vehicle for agricultural application.” 2014. Web. 27 Feb 2021.
Vancouver:
Chikosi G. Autonomous guided vehicle for agricultural application. [Internet] [Thesis]. Nelson Mandela Metropolitan University; 2014. [cited 2021 Feb 27].
Available from: http://hdl.handle.net/10948/d1016164.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Chikosi G. Autonomous guided vehicle for agricultural application. [Thesis]. Nelson Mandela Metropolitan University; 2014. Available from: http://hdl.handle.net/10948/d1016164
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
27.
Jajuli, Fatin Afiqah.
A comparative evaluation on the performance and emission characteristics of an internal combustion engine using ceramic and metallic catalytic converter.
Degree: Faculty of Engineering Technology, 2017, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/9918/
► Automobile exhaust emission control is one of trending issues in automotive research field. Ceramic and metallic catalytic converters are the most common types of catalytic…
(more)
▼ Automobile exhaust emission control is one of trending issues in automotive research
field. Ceramic and metallic catalytic converters are the most common types of catalytic
converters. Most current researches focus on the modeling and characterization of
catalytic converter and there is a lack of exhaust gas conversion data of different catalyst
types that correspond to real engine operating condition. This project focuses on
comparing and analyzing the performance of ceramic and metallic catalytic converter on
its conversion efficiency. Mitsubishi 4G93 1800cc gasoline engine was attached with a
dynamometer and Kane Auto 5-1 series exhaust gas analyzer were used for emission
measurements of carbon monoxide (CO), hydrocarbon (HC) and nitrogen oxide (NOx) in
different speed and constant load. The experimental results of the engine performance
and exhaust emission were used to compare the performance of ceramic and metallic
catalytic converters in reducing the concentration of the exhaust emission without
affecting the engine performance. Based on the result, metallic catalytic converter
showed a higher 97.9% reduction of CO concentration reduction emission as compared
to the ceramic catalytic converter. The ceramic catalytic converters on the other hands
showed better reduction of NOx and HC concentration of 87.2% and 85.4% percentage
of reduction. It can be concluded that metallic catalytic converters performs a better
exhaust gas conversion on high temperature condition at reducing CO emission while
ceramic catalytic converters reduced HC and NOx emission more effectively due to its
lower thermal conductivity.
Subjects/Keywords: TL1-484 Motor vehicles. Cycles
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APA (6th Edition):
Jajuli, F. A. (2017). A comparative evaluation on the performance and emission characteristics of an internal combustion engine using ceramic and metallic catalytic converter. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/9918/
Chicago Manual of Style (16th Edition):
Jajuli, Fatin Afiqah. “A comparative evaluation on the performance and emission characteristics of an internal combustion engine using ceramic and metallic catalytic converter.” 2017. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed February 27, 2021.
http://eprints.uthm.edu.my/id/eprint/9918/.
MLA Handbook (7th Edition):
Jajuli, Fatin Afiqah. “A comparative evaluation on the performance and emission characteristics of an internal combustion engine using ceramic and metallic catalytic converter.” 2017. Web. 27 Feb 2021.
Vancouver:
Jajuli FA. A comparative evaluation on the performance and emission characteristics of an internal combustion engine using ceramic and metallic catalytic converter. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2017. [cited 2021 Feb 27].
Available from: http://eprints.uthm.edu.my/id/eprint/9918/.
Council of Science Editors:
Jajuli FA. A comparative evaluation on the performance and emission characteristics of an internal combustion engine using ceramic and metallic catalytic converter. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2017. Available from: http://eprints.uthm.edu.my/id/eprint/9918/
28.
Rosli, Naida.
An intervention for motorcycle helmet usage based on technology acceptance model.
Degree: Faculty of Civil and Environmental Engineering, 2017, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/9924/
► Motorcycle is a major personal transport mode in Malaysia. However, majority of road accidents fatalities involve motorcyclist. Royal Malaysian Police reported that head is the…
(more)
▼ Motorcycle is a major personal transport mode in Malaysia. However, majority of road
accidents fatalities involve motorcyclist. Royal Malaysian Police reported that head is the
most part of body casualties and fatalities in year 2014. One of the strategies to mitigate
this problem is through proper usage of safety helmet. Thus, this study was introduce a
new approach on motorcyclist safety using Technology Acceptance Model (TAM) with
additional variables. TAM is a theory model used by researcher to examine the factor of
acceptance of new technologies among users. To test the hypothesized model, 319 of
respondents among motorcyclist was chosen as a sample size. The Structural Equation
Modelling (SEM) approach was performed to test full structural model. The result shows
that the goodness of fit indices are excellent fit and all variables (perceived usefulness,
perceived ease of use, descriptive norm, subjective norm and perceived safety) were
statistically significant towards behavioral intention to use Safety Helmet Reminder
System (SHR). It demonstrates that SHR is significantly improve the helmet use among
motorcyclist. R2 value of .77 shows that 77% change in the criterion variables is caused
due to the change taking place by a combination five predictor variables. Perceived Safety
was found the most dominant variables towards behavioral intention to use Safety Helmet
Reminder system. Therefore, TAM model with extended variables are suitable to predict
the behavioral intention to use SHR system among motorcyclist. The conceptual of SHR
system is proposed to function effectively and directly will increase safety helmet usage.
Subjects/Keywords: TL1-484 Motor vehicles. Cycles
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APA ·
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to Zotero / EndNote / Reference
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APA (6th Edition):
Rosli, N. (2017). An intervention for motorcycle helmet usage based on technology acceptance model. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/9924/
Chicago Manual of Style (16th Edition):
Rosli, Naida. “An intervention for motorcycle helmet usage based on technology acceptance model.” 2017. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed February 27, 2021.
http://eprints.uthm.edu.my/id/eprint/9924/.
MLA Handbook (7th Edition):
Rosli, Naida. “An intervention for motorcycle helmet usage based on technology acceptance model.” 2017. Web. 27 Feb 2021.
Vancouver:
Rosli N. An intervention for motorcycle helmet usage based on technology acceptance model. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2017. [cited 2021 Feb 27].
Available from: http://eprints.uthm.edu.my/id/eprint/9924/.
Council of Science Editors:
Rosli N. An intervention for motorcycle helmet usage based on technology acceptance model. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2017. Available from: http://eprints.uthm.edu.my/id/eprint/9924/
29.
Mohd Noor, Ahmad Fuad.
A correlation between whole body vibration and low back pain on lorry drivers.
Degree: Faculty of Mechanical and Manufacturing Engineering, 2017, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/9985/
► High daily exposure of Whole body vibration (WBV) increases Low back pain (LBP) which identified as the cause of early permanent disability (PT). In Malaysia,…
(more)
▼ High daily exposure of Whole body vibration (WBV) increases Low back pain (LBP) which identified as the cause of early permanent disability (PT). In Malaysia, accidents on vertebral column cases are reported to have increased since 2009 with 5 cases to 2014 with 13 cases. Due to companies' confidentiality and high risk industry reinforce the importance of this research. Thus, a prediction model based on WBV towards LBP was developed using vibration and statistical analysis. The 34 drivers with two (2) types of lorry, HINO and FUSO at off-road and 32 drivers with four (4) types of lorry, NISSAN, HINO, FUSO and ISUZU at on-road were involved. The drivers were able to travel at 20 km/h due to poorly maintained off-road roadway. Besides, at on-road roadway, drivers were able to travel at speed of 110 km/h on good surface. The vibration results found that, higher value of static compression dose (Sed) was captured by HINO (1.619 MPa) then FUSO (1.462 MPa) drivers. At the on-road, the higher value of Sed was captured by drivers of NISSAN (1.13 MPa), FUSO (1.06 MPa), HINO (1.00 MPa) and ISUZU (0.86 MPa). According to ISO 2631-5 (2004), drivers was already adverse LBP. Travelling at high speed along irregularities at the roadway without any good vibration insulation seat also has strong relationship towards LBP. Statistical results proved that, all drivers have suffered LBP at off-road; correlation coefficient, r is 0.0774, number of sample, N is 34, significant value, p is 0.001 and at on-road r of 0.536, N of 32, p of 0.001 with long-term effect of year's exposure at off-road r of 0.425, N of 34, p of 0.001 and at on-road r of 0.542, N of 32, p of 0.001. As a result, predicted R factor= (0.055) years exposure + 0.638 was developed with 3.1 x 10^-2 of Mean square error (MSE). This prediction model can be used to identify the WBV exposure level assessment in an easy and efficient way.
Subjects/Keywords: TL1-484 Motor vehicles. Cycles
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mohd Noor, A. F. (2017). A correlation between whole body vibration and low back pain on lorry drivers. (Masters Thesis). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/9985/
Chicago Manual of Style (16th Edition):
Mohd Noor, Ahmad Fuad. “A correlation between whole body vibration and low back pain on lorry drivers.” 2017. Masters Thesis, Universiti Tun Hussein Onn Malaysia. Accessed February 27, 2021.
http://eprints.uthm.edu.my/id/eprint/9985/.
MLA Handbook (7th Edition):
Mohd Noor, Ahmad Fuad. “A correlation between whole body vibration and low back pain on lorry drivers.” 2017. Web. 27 Feb 2021.
Vancouver:
Mohd Noor AF. A correlation between whole body vibration and low back pain on lorry drivers. [Internet] [Masters thesis]. Universiti Tun Hussein Onn Malaysia; 2017. [cited 2021 Feb 27].
Available from: http://eprints.uthm.edu.my/id/eprint/9985/.
Council of Science Editors:
Mohd Noor AF. A correlation between whole body vibration and low back pain on lorry drivers. [Masters Thesis]. Universiti Tun Hussein Onn Malaysia; 2017. Available from: http://eprints.uthm.edu.my/id/eprint/9985/
30.
Jamali, Qadir Bakhsh.
Characterization of whole-body vibration for monorail passenger ride comfortanalysis.
Degree: phd, Faculty of Mechanical and Manufacturing Engineering, 2018, Universiti Tun Hussein Onn Malaysia
URL: http://eprints.uthm.edu.my/id/eprint/12235/
► Train travel has always been a major mode of public transport in developed countries. In the inner cities monorails are often used, which are operated…
(more)
▼ Train travel has always been a major mode of public transport in developed countries.
In the inner cities monorails are often used, which are operated at elevated rail or beam,
the main advantage being traffic interactions can be minimized while maintaining its
original landscape. Ride comfort is the basic requirement for every passenger in all
kind of public transports. In monorail, vibration is considered as major factor of
discomfort, it transmitted to human body, which contribute many health issues. The
aim of this study was to evaluate the whole-body vibration transmission and the effects
to the monorail passengers. There were total of twenty-four experiments conducted in
a two-car train monorail on its complete line from Kuala Lumpur Sentral to Titiwangsa
stations. Human vibration meter (HVM-100) with tri-axial accelerometer pad was used
to measure the WBV of passengers and International Standards Organization (ISO)
2631-1: 1997 was used for analysis. The experimental results show that the daily
vibration exposure 0.81 m/s2 was higher than the action value 0.5 m/s2 of the standard
during peak operation and 0.82 m/s2 during off-peak operation. The health effect was
measured 9.90 m/s1.75 during peak operation and 9.94 m/s1.75 during off-peak
operation; both values are observed in moderate health effect zone as per standard (8.5
m/s1.75 to 17 m/s1.75). Moreover, the passenger ride comfort was measured, it was found
to be fairly-uncomfortable at rear bogie and not-uncomfortable at center of car. The
statistical analysis has proven the significance of orientation, location and operating
hours by significant value p = 0.000 (i.e. p < α) with 29.5% of the variance has been
accounted between groups. This provides justification to standardization of proper
priority seating zone. The findings of this study can assist in the standard specification
for seating design of monorail. The statistical analysis shows that all results are
statistically significant for orientations, locations as well as operations.
Subjects/Keywords: TL1-484 Motor vehicles. Cycles
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Export
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APA (6th Edition):
Jamali, Q. B. (2018). Characterization of whole-body vibration for monorail passenger ride comfortanalysis. (Doctoral Dissertation). Universiti Tun Hussein Onn Malaysia. Retrieved from http://eprints.uthm.edu.my/id/eprint/12235/
Chicago Manual of Style (16th Edition):
Jamali, Qadir Bakhsh. “Characterization of whole-body vibration for monorail passenger ride comfortanalysis.” 2018. Doctoral Dissertation, Universiti Tun Hussein Onn Malaysia. Accessed February 27, 2021.
http://eprints.uthm.edu.my/id/eprint/12235/.
MLA Handbook (7th Edition):
Jamali, Qadir Bakhsh. “Characterization of whole-body vibration for monorail passenger ride comfortanalysis.” 2018. Web. 27 Feb 2021.
Vancouver:
Jamali QB. Characterization of whole-body vibration for monorail passenger ride comfortanalysis. [Internet] [Doctoral dissertation]. Universiti Tun Hussein Onn Malaysia; 2018. [cited 2021 Feb 27].
Available from: http://eprints.uthm.edu.my/id/eprint/12235/.
Council of Science Editors:
Jamali QB. Characterization of whole-body vibration for monorail passenger ride comfortanalysis. [Doctoral Dissertation]. Universiti Tun Hussein Onn Malaysia; 2018. Available from: http://eprints.uthm.edu.my/id/eprint/12235/
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Open Access Theses and Dissertations
