You searched for subject:(Ozark Off Road Cyclists).
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University of Arkansas
1.
Edmondson, Alan James.
Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas.
Degree: MA, 2019, University of Arkansas
URL: https://scholarworks.uark.edu/etd/3296 
► Kessler Mountain in Fayetteville Arkansas has long been recognized for its beauty and natural resources. Parts of Kessler Mountain have been homesteaded and developed…
(more)
▼ Kessler Mountain in Fayetteville Arkansas has long been recognized for its beauty and natural resources. Parts of Kessler Mountain have been homesteaded and developed in the past, but most of the mountain has remained relatively undisturbed. The planned development of over 4,000 housing units to cover Kessler Mountain stimulated controversy and consideration of other management alternatives. A twist of fate involving an economic recession, a dedicated group of outdoor recreation enthusiasts, and environmental conservationists led to the permanent protection of 384 acres in the Kessler Mountain Regional Park. To help evaluate the natural resources at Kessler Mountain, forest composition, structure, and tree age were measured at two old growth forest parcels on Kessler Mountain. Forest understory and overstory were surveyed and increment cores were collected from select overstory trees. The overstory of the post oak (Quercus stellata) site (Site A) was dominated by post oak and northern red oak (Quercus rubra). The understory was dominated by northern red oak and black locust (Robnia pseudoacacia). The oldest post oak trees at the post oak site were in the 250 to 300-year-old age class based on dendrochronological analysis of core samples. The overstory of the chinkapin oak (Quercus muehlenbergii) site (Site B) was dominated by sugar maple (Acer saccharum var. saccharum) and chinkapin oak. The understory was dominated by eastern red cedar (Juniperous virginiana) and northern red oak. The oldest chinkapin oak trees at Site B were in the 200 to 250-year-old age class. The data suggest that chinkapin oak and post oak are currently not regenerating at rates necessary to maintain long term dominance in the canopy at these particular study sites on Kessler Mountain. As more land is conserved in the region significant planning and funding need to be dedicated to proper management of these lands to maintain biodiversity and healthy forests.
Advisors/Committee Members: David W. Stahle, Fred L. Paillet, Malcom K. Cleaveland.
Subjects/Keywords: Dendrochronology; Kessler Mountain Arkansas; Old Growth Forest; Ozark Off Road Cyclists; Fayetteville Natural Heritage Association; Forest Management; Natural Resources and Conservation; Nature and Society Relations; Physical and Environmental Geography
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APA (6th Edition):
Edmondson, A. J. (2019). Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas. (Masters Thesis). University of Arkansas. Retrieved from https://scholarworks.uark.edu/etd/3296
Chicago Manual of Style (16th Edition):
Edmondson, Alan James. “Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas.” 2019. Masters Thesis, University of Arkansas. Accessed December 11, 2019.
https://scholarworks.uark.edu/etd/3296.
MLA Handbook (7th Edition):
Edmondson, Alan James. “Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas.” 2019. Web. 11 Dec 2019.
Vancouver:
Edmondson AJ. Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas. [Internet] [Masters thesis]. University of Arkansas; 2019. [cited 2019 Dec 11].
Available from: https://scholarworks.uark.edu/etd/3296.
Council of Science Editors:
Edmondson AJ. Analysis and Conservation of Native Forests at Kessler Mountain Fayetteville, Arkansas. [Masters Thesis]. University of Arkansas; 2019. Available from: https://scholarworks.uark.edu/etd/3296
2.
Clark, Bradley.
The physiology of road cycling : New testing and training methodologies for competitive cyclists.
Degree: PhD, 2014, Federation University Australia
URL: http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/81592
► Objective: The objective of this project is to describe and test the efficacy of new testing and training techniques for competitive cyclists. Methods: Physiological variables…
(more)
▼ Objective: The objective of this project is to describe and test the efficacy of new testing and training techniques for competitive cyclists. Methods: Physiological variables and cycling performance were measured during a graded exercise test (GXT) and a novel, computer-simulated, variable gradient 20-km cycling time-trial. Initially, data collected from the time-trial and GXT were used to establish the reliability of the time-trial, determine the laboratory correlates of hilly cycling performance and examine the pacing pattern during hilly cycling performance. Then, results from a series of GXT’s and time-trials were used to establish the effects of a brief period of overload training on the physiology and performance of competitive cyclists. Results: Power output and performance time measured during a computer simulated 20-km variable gradient cycling test were reliable, however reliability diminished with increasing time between trials. Performance in variable gradient time-trial correlated strongly with absolute measures of physiological variables; however the strength of correlations increased when variables were measured relative to body mass. Power output was highest during the first four and last two kilometres of a variable gradient time-trial. Additionally, there were large differences in power output between consecutive one kilometre segments throughout the trial, particularly when the difference in gradient between segments was greater. Performance in the variable gradient time-trial improved substantially following a brief period of overload training. Performance improvement corresponded with adaptation in important physiological determinants of cycling performance, namely maximal oxygen uptake, lactate threshold and gross efficiency. Conclusions: Variable gradient, cycling time-trial tests can be used to detect meaningful changes in performance, evoke dynamic distribution of power output and are best suited to cyclists who produce high power outputs relative to body mass. The current project also determined that a brief period of overload training induces physiological adaptation and substantial improvement in cycling performance in competitive cyclists. Sport scientists, coaches and cyclists can use this information to determine the testing and training techniques used in preparation for competition.
Doctor of Philosophy
Subjects/Keywords: Road cycling; Training techniques; Competitive cyclists; Physiological variables; Cycling performance
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APA (6th Edition):
Clark, B. (2014). The physiology of road cycling : New testing and training methodologies for competitive cyclists. (Doctoral Dissertation). Federation University Australia. Retrieved from http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/81592
Chicago Manual of Style (16th Edition):
Clark, Bradley. “The physiology of road cycling : New testing and training methodologies for competitive cyclists.” 2014. Doctoral Dissertation, Federation University Australia. Accessed December 11, 2019.
http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/81592.
MLA Handbook (7th Edition):
Clark, Bradley. “The physiology of road cycling : New testing and training methodologies for competitive cyclists.” 2014. Web. 11 Dec 2019.
Vancouver:
Clark B. The physiology of road cycling : New testing and training methodologies for competitive cyclists. [Internet] [Doctoral dissertation]. Federation University Australia; 2014. [cited 2019 Dec 11].
Available from: http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/81592.
Council of Science Editors:
Clark B. The physiology of road cycling : New testing and training methodologies for competitive cyclists. [Doctoral Dissertation]. Federation University Australia; 2014. Available from: http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/81592
University of Pretoria
3.
Botha, Theunis R.
High speed
autonomous off-road vehicle steering.
Degree: Mechanical and Aeronautical
Engineering, 2011, University of Pretoria
URL: http://hdl.handle.net/2263/29665
► High speed cornering of an off-road vehicle poses considerable challenges to the development of an autonomous vehicle due to the non-linear dynamics of the tyre…
(more)
▼ High speed cornering of an
off-
road vehicle poses
considerable challenges to the development of an autonomous vehicle
due to the non-linear dynamics of the tyre
road interface as well
as those of the vehicle as a whole during high lateral
accelerations. Most driver models are developed for low speed
applications using linear control methods under the assumption of
linear vehicle dy- namics. The dynamics of a vehicle however become
highly non-linear as the lateral acceleration increases, thus
rendering these linear models unusable during high speed
manoeuvres. In this study, two robust driver models for use in an
autonomous vehicle capable of path following at both low and high
speeds are presented. Both models make use of the relationship
between the yaw acceleration and steering rate to control the yaw
angle of the vehicle. The first driver model is derived from the
simulation of a full non-linear vehicle model in ADAMS. The Magic
Tyre Formula is used to model the relationship between the
vehicle's yaw acceleration and steer rate as a function of vehicle
speed. The second driver model is a mathematical model which
incorporates a form of sliding control. The model includes the
lateral tyre dynamics as modelled by the Pacejka '89 tyre model.
Both driver models are coupled with a gain scheduling proportional
derivative controller to reduce the cross-track error. The two
driver models were implemented on a Land Rover Defender and
experimentally validated by performing a double lane change
manoeuvre at speeds up to 80km/h. The vehicle remained stable even
though the lateral accelerations experienced were 80% of the
vehicle limits. The result is a robust controller capable of path
following at various speeds and at high lateral accelerations.
Copyright
Advisors/Committee Members: Els, P.S. (Pieter Schalk) (advisor).
Subjects/Keywords: High
speed; Off-road
vehicle steering;
UCTD
Record Details
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Botha, T. R. (2011). High speed
autonomous off-road vehicle steering. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/29665
Chicago Manual of Style (16th Edition):
Botha, Theunis R. “High speed
autonomous off-road vehicle steering.” 2011. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://hdl.handle.net/2263/29665.
MLA Handbook (7th Edition):
Botha, Theunis R. “High speed
autonomous off-road vehicle steering.” 2011. Web. 11 Dec 2019.
Vancouver:
Botha TR. High speed
autonomous off-road vehicle steering. [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/2263/29665.
Council of Science Editors:
Botha TR. High speed
autonomous off-road vehicle steering. [Masters Thesis]. University of Pretoria; 2011. Available from: http://hdl.handle.net/2263/29665
University of Pretoria
4.
Els,
P.S. (Pieter Schalk).
The ride comfort
vs. handling compromise for off-road vehicles.
Degree: Mechanical and Aeronautical
Engineering, 2011, University of Pretoria
URL: http://hdl.handle.net/2263/26302
► This thesis examines the classic ride comfort vs. handling compromise when designing a vehicle suspension system. A controllable suspension system, that can, through the use…
(more)
▼ This thesis examines the classic ride comfort vs.
handling compromise when designing a vehicle suspension system. A
controllable suspension system, that can, through the use of
suitable control algorithms, eliminate this compromise, is proposed
and implemented. It is a well known fact that if a vehicle
suspension system is designed for best ride comfort, then handling
performance will suffer and vice versa. This is especially true for
the class of vehicle that need to perform well both on- and
off-
road such as Sports Utility Vehicles (SUV’s) and wheeled
military vehicles. These vehicles form the focus of this
investigation. The ride comfort and handling of a Land Rover
Defender 110 Sports Utility Vehicle is investigated using
mathematical modelling and field tests. The full vehicle,
non-linear mathematical model, built in MSC ADAMS software, is
verified against test data, with favourable correlation between
modelled and measured results. The model is subsequently modified
to incorporate hydropneumatic springs and used to obtain optimised
spring and damper characteristics for ride comfort and handling
respectively. Ride comfort is optimised by minimising vertical
acceleration when driving in a straight line over a rough,
off-
road
terrain profile. Handling is optimised by minimising the body roll
angle through a double lane change manoeuvre. It is found that
these optimised results are at opposite corners of the design
space, i.e. ride comfort requires a soft suspension while handling
requires a stiff suspension. It is shown that the ride comfort vs.
handling compromise can only be eliminated by having an active
suspension system, or a controllable suspension system that can
switch between a soft and a stiff spring, as well as low and high
damping. This switching must occur rapidly and automatically
without driver intervention. A prototype 4 State Semi-active
Suspension System (4S4) is designed, manufactured, tested and
modelled mathematically. This system enables switching between low
and high damping, as well as between soft and stiff springs in less
than 100 milliseconds. A control strategy to switch the suspension
system between the “ride” mode and the “handling” mode is proposed,
implemented on a test vehicle and evaluated during vehicle tests
over various on- and
off-
road terrains and for various handling
manoeuvres. The control strategy is found to be simple and cost
effective to implement and works extremely well. Improvements of
the order of 50% can be achieved for both ride comfort and
handling. AFRIKAANS : In hierdie proefskrif word die klassieke
kompromie wat getref moet word tussen ritgemak en hantering, tydens
die ontwerp van ‘n voertuig suspensiestelsel ondersoek. ‘n
Beheerbare suspensiestelsel, wat die kompromie kan elimineer deur
gebruik te maak van toepaslike beheeralgoritmes, word voorgestel en
geïmplementeer. Dit is ‘n bekende feit dat, wanneer die
karakteristieke van ‘n voertuigsuspensiestelsel ontwerp word vir
die beste moontlike ritgemak, die hantering nie na wense is nie, en
ook omgekeerd. Dit…
Advisors/Committee Members: Theron, Nicolaas J. (advisor).
Subjects/Keywords: Vehicle
suspension system; Off-road
vehicles;
UCTD
Record Details
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Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Schalk), E
P.S.. (. (2011). The ride comfort
vs. handling compromise for off-road vehicles. (Doctoral Dissertation). University of Pretoria. Retrieved from http://hdl.handle.net/2263/26302
Chicago Manual of Style (16th Edition):
Schalk), Els,
P.S. (Pieter. “The ride comfort
vs. handling compromise for off-road vehicles.” 2011. Doctoral Dissertation, University of Pretoria. Accessed December 11, 2019.
http://hdl.handle.net/2263/26302.
MLA Handbook (7th Edition):
Schalk), Els,
P.S. (Pieter. “The ride comfort
vs. handling compromise for off-road vehicles.” 2011. Web. 11 Dec 2019.
Vancouver:
Schalk) E
P.S.(. The ride comfort
vs. handling compromise for off-road vehicles. [Internet] [Doctoral dissertation]. University of Pretoria; 2011. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/2263/26302.
Council of Science Editors:
Schalk) E
P.S.(. The ride comfort
vs. handling compromise for off-road vehicles. [Doctoral Dissertation]. University of Pretoria; 2011. Available from: http://hdl.handle.net/2263/26302
University of Pretoria
5.
Els, P.S. (Pieter Schalk).
The ride comfort vs. handling compromise for off-road
vehicles
.
Degree: 2011, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-07152008-102911/
► This thesis examines the classic ride comfort vs. handling compromise when designing a vehicle suspension system. A controllable suspension system, that can, through the use…
(more)
▼ This thesis examines the classic ride comfort vs.
handling compromise when designing a vehicle suspension system. A
controllable suspension system, that can, through the use of
suitable control algorithms, eliminate this compromise, is proposed
and implemented. It is a well known fact that if a vehicle
suspension system is designed for best ride comfort, then handling
performance will suffer and vice versa. This is especially true for
the class of vehicle that need to perform well both on- and
off-
road such as Sports Utility Vehicles (SUV’s) and wheeled
military vehicles. These vehicles form the focus of this
investigation. The ride comfort and handling of a Land Rover
Defender 110 Sports Utility Vehicle is investigated using
mathematical modelling and field tests. The full vehicle,
non-linear mathematical model, built in MSC ADAMS software, is
verified against test data, with favourable correlation between
modelled and measured results. The model is subsequently modified
to incorporate hydropneumatic springs and used to obtain optimised
spring and damper characteristics for ride comfort and handling
respectively. Ride comfort is optimised by minimising vertical
acceleration when driving in a straight line over a rough,
off-
road
terrain profile. Handling is optimised by minimising the body roll
angle through a double lane change manoeuvre. It is found that
these optimised results are at opposite corners of the design
space, i.e. ride comfort requires a soft suspension while handling
requires a stiff suspension. It is shown that the ride comfort vs.
handling compromise can only be eliminated by having an active
suspension system, or a controllable suspension system that can
switch between a soft and a stiff spring, as well as low and high
damping. This switching must occur rapidly and automatically
without driver intervention. A prototype 4 State Semi-active
Suspension System (4S4) is designed, manufactured, tested and
modelled mathematically. This system enables switching between low
and high damping, as well as between soft and stiff springs in less
than 100 milliseconds. A control strategy to switch the suspension
system between the “ride” mode and the “handling” mode is proposed,
implemented on a test vehicle and evaluated during vehicle tests
over various on- and
off-
road terrains and for various handling
manoeuvres. The control strategy is found to be simple and cost
effective to implement and works extremely well. Improvements of
the order of 50% can be achieved for both ride comfort and
handling. AFRIKAANS : In hierdie proefskrif word die klassieke
kompromie wat getref moet word tussen ritgemak en hantering, tydens
die ontwerp van ‘n voertuig suspensiestelsel ondersoek. ‘n
Beheerbare suspensiestelsel, wat die kompromie kan elimineer deur
gebruik te maak van toepaslike beheeralgoritmes, word voorgestel en
geïmplementeer. Dit is ‘n bekende feit dat, wanneer die
karakteristieke van ‘n voertuigsuspensiestelsel ontwerp word vir
die beste moontlike ritgemak, die hantering nie na wense is nie, en
ook omgekeerd. Dit…
Advisors/Committee Members: Theron, Nicolaas J (advisor).
Subjects/Keywords: Vehicle suspension system;
Off-road vehicles;
UCTD
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Els, P. S. (. S. (2011). The ride comfort vs. handling compromise for off-road
vehicles
. (Doctoral Dissertation). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-07152008-102911/
Chicago Manual of Style (16th Edition):
Els, P S (Pieter Schalk). “The ride comfort vs. handling compromise for off-road
vehicles
.” 2011. Doctoral Dissertation, University of Pretoria. Accessed December 11, 2019.
http://upetd.up.ac.za/thesis/available/etd-07152008-102911/.
MLA Handbook (7th Edition):
Els, P S (Pieter Schalk). “The ride comfort vs. handling compromise for off-road
vehicles
.” 2011. Web. 11 Dec 2019.
Vancouver:
Els PS(S. The ride comfort vs. handling compromise for off-road
vehicles
. [Internet] [Doctoral dissertation]. University of Pretoria; 2011. [cited 2019 Dec 11].
Available from: http://upetd.up.ac.za/thesis/available/etd-07152008-102911/.
Council of Science Editors:
Els PS(S. The ride comfort vs. handling compromise for off-road
vehicles
. [Doctoral Dissertation]. University of Pretoria; 2011. Available from: http://upetd.up.ac.za/thesis/available/etd-07152008-102911/
University of Pretoria
6.
Botha, Theunis R.
High speed autonomous off-road vehicle
steering
.
Degree: 2011, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-11212011-125411/
► High speed cornering of an off-road vehicle poses considerable challenges to the development of an autonomous vehicle due to the non-linear dynamics of the tyre…
(more)
▼ High speed cornering of an
off-
road vehicle poses
considerable challenges to the development of an autonomous vehicle
due to the non-linear dynamics of the tyre
road interface as well
as those of the vehicle as a whole during high lateral
accelerations. Most driver models are developed for low speed
applications using linear control methods under the assumption of
linear vehicle dy- namics. The dynamics of a vehicle however become
highly non-linear as the lateral acceleration increases, thus
rendering these linear models unusable during high speed
manoeuvres. In this study, two robust driver models for use in an
autonomous vehicle capable of path following at both low and high
speeds are presented. Both models make use of the relationship
between the yaw acceleration and steering rate to control the yaw
angle of the vehicle. The first driver model is derived from the
simulation of a full non-linear vehicle model in ADAMS. The Magic
Tyre Formula is used to model the relationship between the
vehicle's yaw acceleration and steer rate as a function of vehicle
speed. The second driver model is a mathematical model which
incorporates a form of sliding control. The model includes the
lateral tyre dynamics as modelled by the Pacejka '89 tyre model.
Both driver models are coupled with a gain scheduling proportional
derivative controller to reduce the cross-track error. The two
driver models were implemented on a Land Rover Defender and
experimentally validated by performing a double lane change
manoeuvre at speeds up to 80km/h. The vehicle remained stable even
though the lateral accelerations experienced were 80% of the
vehicle limits. The result is a robust controller capable of path
following at various speeds and at high lateral accelerations.
Copyright
Advisors/Committee Members: Els, P.S. (Pieter Schalk) (advisor).
Subjects/Keywords: High speed;
Off-road vehicle steering;
UCTD
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Botha, T. R. (2011). High speed autonomous off-road vehicle
steering
. (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-11212011-125411/
Chicago Manual of Style (16th Edition):
Botha, Theunis R. “High speed autonomous off-road vehicle
steering
.” 2011. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://upetd.up.ac.za/thesis/available/etd-11212011-125411/.
MLA Handbook (7th Edition):
Botha, Theunis R. “High speed autonomous off-road vehicle
steering
.” 2011. Web. 11 Dec 2019.
Vancouver:
Botha TR. High speed autonomous off-road vehicle
steering
. [Internet] [Masters thesis]. University of Pretoria; 2011. [cited 2019 Dec 11].
Available from: http://upetd.up.ac.za/thesis/available/etd-11212011-125411/.
Council of Science Editors:
Botha TR. High speed autonomous off-road vehicle
steering
. [Masters Thesis]. University of Pretoria; 2011. Available from: http://upetd.up.ac.za/thesis/available/etd-11212011-125411/
Rochester Institute of Technology
7.
He, Limin.
Cyclist Safety in Urban Areas.
Degree: MFA, School of Design (CAD), 2018, Rochester Institute of Technology
URL: https://scholarworks.rit.edu/theses/9928
► Cycling as an alternative means of transport is encouraged in urban areas because of the societal and environmental benefits it brings to most cities.…
(more)
▼ Cycling as an alternative means of transport is encouraged in urban areas because of the societal and environmental benefits it brings to most cities. However, the conflicts between
cyclists and motorists become more obvious in complex urban areas, which places
cyclists in a dangerous situation- a higher chance to get involved in serious injuries. To analyze how the problem happens, this paper talks about the user research, environment and collisions analysis. Then, this paper presents survey procedure and results related to user demands for cycling safety. The visibility limitation was found to be the main reason for the conflicts. In terms of solutions, this paper introduces theoretical methods and existing products suggested to enhance cyclists’ visibility, and it proposes a visibility system which is designed with the consideration of Maslow's hierarchy of needs. The whole system makes
cyclists conspicuous so as to reduce the collisions between
cyclists and motorists.
Advisors/Committee Members: Mindy Magyar, Alex Lobos.
Subjects/Keywords: Bicycle safety; Collisions on the road; Cyclists; Motorists; Urban areas; Visibility system
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
He, L. (2018). Cyclist Safety in Urban Areas. (Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/9928
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):
He, Limin. “Cyclist Safety in Urban Areas.” 2018. Thesis, Rochester Institute of Technology. Accessed December 11, 2019.
https://scholarworks.rit.edu/theses/9928.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
He, Limin. “Cyclist Safety in Urban Areas.” 2018. Web. 11 Dec 2019.
Vancouver:
He L. Cyclist Safety in Urban Areas. [Internet] [Thesis]. Rochester Institute of Technology; 2018. [cited 2019 Dec 11].
Available from: https://scholarworks.rit.edu/theses/9928.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
He L. Cyclist Safety in Urban Areas. [Thesis]. Rochester Institute of Technology; 2018. Available from: https://scholarworks.rit.edu/theses/9928
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Tennessee – Knoxville
8.
Mussah, Abdul Rashid.
What Effect Does Driver Maneuvers Have on The Safety of Pedestrians and Cyclists? An In-Depth Descriptive Analysis of Vulnerable User Crashes and Near-Misses.
Degree: MS, Civil Engineering, 2017, University of Tennessee – Knoxville
URL: https://trace.tennessee.edu/utk_gradthes/4996
► Vulnerable Road user safety is a leading issue in the effort to create safer driving environment and reduce the instances of crashes on the roadways.…
(more)
▼ Vulnerable
Road user safety is a leading issue in the effort to create safer driving environment and reduce the instances of crashes on the roadways. The research approach here is to conduct an in-depth descriptive analysis of pedestrian and bicyclist pre-incident behaviors and evasive maneuvers in near-miss or crash-like situations and to seek an understanding of how different driving behaviors put these
road users at risk. By analysing naturalistic driving data from the 2nd Strategic Highway Research Program (SHRP-2), the pre-incident maneuvers of both drivers are analysed to determine the risk factors of each maneuver to other
road users, in comparison to a baseline situation where no crashes were involved. Regarding the analysis, two event scenarios of vehicle-to-vehicle situations and, pedestrians and
cyclists involved situations, were identified as main categories of interest to create a more in-depth representation of the risk factors of specific driving maneuvers. These two categories were compared to a baseline scenario where no crashes or near-misses occurred. From the observed descriptive statistics, it can be inferred that unsafe and/or illegal maneuvers increase the instance of crash like events, these values increased from a baseline proportion, of a combined total of 7%, to making-up 17% of PedBike involved events, and 26% of vehicle-to-vehicle events. The proportions can further be broken down for the baseline as 2% safe but illegal, 4% unsafe and illegal, and 1% unsafe but legal. For PedBike involved events we have a breakdown of 1% safe but illegal, 11% unsafe and illegal, and 5% unsafe but legal. Finally, in the instance of vehicle only involved events the breakdown of the proportions is represented as 1% safe but illegal, 16% unsafe and illegal, and 9% unsafe but legal. What the findings suggests is that each driving maneuver requires a certain level of awareness in response to many environmental factors to ensure a safe outcome at the end of the maneuver. This study therefore stresses the importance of driver awareness in successfully initiating and executing all driving maneuvers for the safest possible outcome for pedestrians,
cyclists and other drivers.
Advisors/Committee Members: Asad J. Khattak, Christopher Cherry, Lee D. Han.
Subjects/Keywords: vulnerable road users; pedestrians; cyclists; naturalistic driving; multinomial logistic regression; pedbike; nds
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APA (6th Edition):
Mussah, A. R. (2017). What Effect Does Driver Maneuvers Have on The Safety of Pedestrians and Cyclists? An In-Depth Descriptive Analysis of Vulnerable User Crashes and Near-Misses. (Thesis). University of Tennessee – Knoxville. Retrieved from https://trace.tennessee.edu/utk_gradthes/4996
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):
Mussah, Abdul Rashid. “What Effect Does Driver Maneuvers Have on The Safety of Pedestrians and Cyclists? An In-Depth Descriptive Analysis of Vulnerable User Crashes and Near-Misses.” 2017. Thesis, University of Tennessee – Knoxville. Accessed December 11, 2019.
https://trace.tennessee.edu/utk_gradthes/4996.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mussah, Abdul Rashid. “What Effect Does Driver Maneuvers Have on The Safety of Pedestrians and Cyclists? An In-Depth Descriptive Analysis of Vulnerable User Crashes and Near-Misses.” 2017. Web. 11 Dec 2019.
Vancouver:
Mussah AR. What Effect Does Driver Maneuvers Have on The Safety of Pedestrians and Cyclists? An In-Depth Descriptive Analysis of Vulnerable User Crashes and Near-Misses. [Internet] [Thesis]. University of Tennessee – Knoxville; 2017. [cited 2019 Dec 11].
Available from: https://trace.tennessee.edu/utk_gradthes/4996.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mussah AR. What Effect Does Driver Maneuvers Have on The Safety of Pedestrians and Cyclists? An In-Depth Descriptive Analysis of Vulnerable User Crashes and Near-Misses. [Thesis]. University of Tennessee – Knoxville; 2017. Available from: https://trace.tennessee.edu/utk_gradthes/4996
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Concordia University
9.
Afghari, Amir Pooyan.
Incorporation of road safety into road management systems.
Degree: 2012, Concordia University
URL: http://eprints.qut.edu.au/79838/
► Road collisions negatively affect the lives of hundreds of Canadians per year. Unfortunately, safety has been typically neglected from management systems. It is common to…
(more)
▼ Road collisions negatively affect the lives of hundreds of Canadians per year.
Unfortunately, safety has been typically neglected from management systems. It is
common to find that a great deal of effort has been devoted to develop and implement
systems capable of achieving and sustaining good levels of condition. It is relatively
recent that road safety has become an important objective. Managing a network of roads
is not an easy task; it requires long, medium and short term plans to maintain, rehabilitate
and upgrade aging assets, reduce and mitigate accident exposure, likelihood and severity.
This thesis presents a basis for incorporating road safety into road management systems;
two case studies were developed; one limited by available data and another from
sufficient information. A long term analysis was used to allocate improvements for
condition and safety of roads and bridges, at the network level. It was confirmed that a
safety index could be used to obtain a first cut model; meanwhile potential for
improvement which is a difference between observed and predicted number of accidents
was capable of capturing the degree of safety of individual segments. It was found that
the completeness of the system resulted in savings because of the economies obtained
from trade-off optimization. It was observed that safety improvements were allocated at
the beginning of the analysis in order to reduce the extent of issues, which translated into
a systematic reduction of potential for improvement up to a point of near constant levels,
which were hypothesized to relate to those unavoidable collisions from human error or
vehicle failure.
Subjects/Keywords: Road Management Systems; Road Safety; trade-off analysis; optimization; management
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APA (6th Edition):
Afghari, A. P. (2012). Incorporation of road safety into road management systems. (Thesis). Concordia University. Retrieved from http://eprints.qut.edu.au/79838/
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):
Afghari, Amir Pooyan. “Incorporation of road safety into road management systems.” 2012. Thesis, Concordia University. Accessed December 11, 2019.
http://eprints.qut.edu.au/79838/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Afghari, Amir Pooyan. “Incorporation of road safety into road management systems.” 2012. Web. 11 Dec 2019.
Vancouver:
Afghari AP. Incorporation of road safety into road management systems. [Internet] [Thesis]. Concordia University; 2012. [cited 2019 Dec 11].
Available from: http://eprints.qut.edu.au/79838/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Afghari AP. Incorporation of road safety into road management systems. [Thesis]. Concordia University; 2012. Available from: http://eprints.qut.edu.au/79838/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Canberra
10.
Lee, Hamilton.
Competitive mountain bike and road cycling: physiological
characteristics of athletes and demands of competition.
Degree: 2003, University of Canberra
URL: http://erl.canberra.edu.au./public/adt-AUC20050523.110406
► Despite many studies describing the physiological characteristics of professional road
cyclists and recent work describing the demands of competition, there is a paucity of
similar information regarding…
(more)
▼ Despite many studies describing the physiological characteristics of professional road
cyclists and recent work describing the demands of competition, there is a paucity of
similar information regarding elite mountain bike (MTB) cyclists. The aim of the
present work was to describe the physiological characteristics and the demands of
competition for successful MTB cyclists relative to successful road cyclists.
Internationally competitive cyclists from both disciplines (seven MTB and seven road)
completed the following laboratory tests: anthropometric measurements, an incremental
cycle ergometer test and a 30 minute laboratory time trial. In addition, the power output
profile obtained in the field from a world-class MTB cyclist riding a simulated race
were compared to successful road cycling performances (placing top 3) in flat (FLAT),
semi-mountainous (SEMO), high-mountainous (HIMO), individual time trial (ITT) and
criterium (CRIT) road races.
Due to conversion problems, 6 sentences have been omitted. For full abstract, see 01front.pdf.
These results indicate that success in international MTB racing
requires high power-to-weight characteristics complemented by a light and lean
physique. MTB racing is associated with greater torque at the pedal crank, a more
constant effort with less time at lower power outputs and a higher frequency of highintensity
surges than road racing. Therefore coaches should take into account these
unique MTB racing characteristics when devising training programs for elite athletes.
Subjects/Keywords: MTB cyclists; cyclists; anthropometric measurements; road races; competition demands on athletes; mountain bikes
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APA (6th Edition):
Lee, H. (2003). Competitive mountain bike and road cycling: physiological
characteristics of athletes and demands of competition. (Thesis). University of Canberra. Retrieved from http://erl.canberra.edu.au./public/adt-AUC20050523.110406
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):
Lee, Hamilton. “Competitive mountain bike and road cycling: physiological
characteristics of athletes and demands of competition.” 2003. Thesis, University of Canberra. Accessed December 11, 2019.
http://erl.canberra.edu.au./public/adt-AUC20050523.110406.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lee, Hamilton. “Competitive mountain bike and road cycling: physiological
characteristics of athletes and demands of competition.” 2003. Web. 11 Dec 2019.
Vancouver:
Lee H. Competitive mountain bike and road cycling: physiological
characteristics of athletes and demands of competition. [Internet] [Thesis]. University of Canberra; 2003. [cited 2019 Dec 11].
Available from: http://erl.canberra.edu.au./public/adt-AUC20050523.110406.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lee H. Competitive mountain bike and road cycling: physiological
characteristics of athletes and demands of competition. [Thesis]. University of Canberra; 2003. Available from: http://erl.canberra.edu.au./public/adt-AUC20050523.110406
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade do Rio Grande do Sul
11.
Teixeira, Lucas Augusto Costa.
Caracterização de payloads via telemetria.
Degree: 2016, Universidade do Rio Grande do Sul
URL: http://hdl.handle.net/10183/157749
► O preço atual do minério de ferro obrigou as empresas a reduzirem os custos operacionais na fase mina. O carregamento e transporte de materiais com…
(more)
▼ O preço atual do minério de ferro obrigou as empresas a reduzirem os custos operacionais na fase mina. O carregamento e transporte de materiais com utilização de escavadeiras e caminhões grande porte representam grande parcela do custo total, particularmente com pneus, diesel, manutenção e mão de obra. Metas de movimentação anual são divididas durante os meses e as condições climáticas podem influenciar na produtividade e desempenho dos equipamentos. O banco de dados da movimentação mensal está condicionado com a capacidade de cada caminhão. Cada frota possui o payload característico e este representa a capacidade de transporte, sendo o valor da massa transportada o único parâmetro extraído em cada ciclo, sem considerar o posicionamento do material sobre a caçamba dos equipamentos. Forças de cisalhamento e torção são aplicadas constantemente no chassi e pneus dos caminhões e, quando as cargas estão descentralizadas, potencializam estes eventos. O transporte de cargas descentralizadas agride os pneus diminuindo a vida útil causando danos como deslocamento da banda de rodagem e separação do flanco. Este trabalho teve como objetivo diminuir as ocorrências de cargas descentralizadas e os custos operacionais. Para incrementar o posicionamento do material sobre as caçambas, a telemetria foi a ferramenta utilizada. Análises de pressões de suspensões indicam o posicionamento das cargas e através desses valores foi criado um banco de dados. Este banco de dados pode indicar qual operador de carga precisa de reciclagem, contribuindo para a redução de cargas descentralizadas e custos, uma vez que cargas deste perfil sucateiam precocemente pneus e suspensões. O estudo foi realizado em Itabira, em uma mina de minério de ferro a céu aberto. A metodologia comprovou ser capaz diminuir as ocorrências de cargas descentralizadas assim como aumentar a vida útil de pneus. Uma possível economia foi apresentada para ano de 2014, período em que a média das horas trabalhadas de pneus ficou abaixo da meta aumentando os custos fase mina.
The actual iron ore price forces the companies to reduce costs in all production steps of the mining operation. Loading and hauling materials using shovel-truck system represents the highest mining costs, particularly tires, diesel, maintenance and workforce. Annual goals of materials movement are split by months were weather conditions can affect productivity and performance of the fleet. The data file of the monthly material movement is based on the scale of each truck. Every fleet has a payload and it represents the capacity of hauling, being the value of loading a unique input extracted in each duty cycle, without taking into account the position of the material over the truck’s dump. Shear forces and torsion are applied all time at the frames trucks and, when the truckloads are unbalanced, increases the forces over the frame and tires. Transport unbalanced truckloads into long distances attack the tires and decrease its end of life, causing damages like displacement of tread and flank separation. The…
Advisors/Committee Members: Koppe, Jair Carlos.
Subjects/Keywords: Load and haul; Transporte de minérios; Custos; Off road trucks; Unbalanced truckloads; Mining costs; Off road tires
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Manager
APA (6th Edition):
Teixeira, L. A. C. (2016). Caracterização de payloads via telemetria. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/157749
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):
Teixeira, Lucas Augusto Costa. “Caracterização de payloads via telemetria.” 2016. Thesis, Universidade do Rio Grande do Sul. Accessed December 11, 2019.
http://hdl.handle.net/10183/157749.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Teixeira, Lucas Augusto Costa. “Caracterização de payloads via telemetria.” 2016. Web. 11 Dec 2019.
Vancouver:
Teixeira LAC. Caracterização de payloads via telemetria. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2016. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/10183/157749.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Teixeira LAC. Caracterização de payloads via telemetria. [Thesis]. Universidade do Rio Grande do Sul; 2016. Available from: http://hdl.handle.net/10183/157749
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Luleå University of Technology
12.
Danielsson, Anton.
Development of an Off-Road Electric Wheelchair : A Study of the Vehicle-to-Ground Interface.
Degree: 2015, Luleå University of Technology
URL: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-58890
► This Master of Science thesis report describes the development process which aims to create a concept for a new off-road electric wheelchair for Permobil,…
(more)
▼ This Master of Science thesis report describes the development process which aims to create a concept for a new off-road electric wheelchair for Permobil, with a focus on the vehicle-to-ground interface. It was performed between January and July 2015 as part of the Master Degree program, Industrial Design Engineering at Luleå University of Technology.Everyone does not have the ability to walk or transport themselves by their own means at trails or rough terrain due to injuries or other kinds of disabilities. The project aims to investigate how a solution should be designed in order to suffice the needs of these kinds of users. In order to achieve the goals, a series of research questions was determined, one of which read: How does the vehicle-to-ground interface affect the traction of the vehicle and the comfort of the user?The theoretical framework presents research findings necessary to reach the aim of this project and focuses on topics such as modularity, terrain types, off-road capability, vehicle dynamics and comfort. The overall development process in this project used a method called Pulse Model. The first stage of the project was market research with a primary focus on Permobil’s X850 model, which was put through several tests. The main problems found were that its lack of lateral stability, low ground clearance, and overall harsh and bumpy ride comfort.The idea generation included both the use of LEGO® Technic bricks, the catalogue method and function prototypes, which resulted in a multitude of different suspension systems. A concept with front and rear trailing arms were chosen for further development and a full-scale prototype was fabricated and tested, which provided important feedback for the final concept.The prototype enabled a set of key aspects that should be considered when designing an off-road wheelchair. These were a ground clearance of at least 200 mm, four wheel drive, 50/50 weight distribution, 360 degree rear wheel steering, a front pivot bar suspension system and active lateral stability system in the rear which makes it able to maintain a level seat while traversing side slopes.In this project it was demonstrated that it is possible to design an off-road electric wheelchair which enables people with disabilities to move around more freely and independently in tough terrain. It is also possible achieve this on Permobil’s new modular chassis, which will reduce both manufacturing, stock and production costs for the products overall life cycle.
Validerat; 20150616 (global_studentproject_submitter)
Subjects/Keywords: Technology; off-road; electric wheelchair; Permobil; suspension; terrain; personal mobility; Teknik; off-road; electric wheelchair; Permobil; suspension; terrain; personal mobility
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APA (6th Edition):
Danielsson, A. (2015). Development of an Off-Road Electric Wheelchair : A Study of the Vehicle-to-Ground Interface. (Thesis). Luleå University of Technology. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-58890
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):
Danielsson, Anton. “Development of an Off-Road Electric Wheelchair : A Study of the Vehicle-to-Ground Interface.” 2015. Thesis, Luleå University of Technology. Accessed December 11, 2019.
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-58890.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Danielsson, Anton. “Development of an Off-Road Electric Wheelchair : A Study of the Vehicle-to-Ground Interface.” 2015. Web. 11 Dec 2019.
Vancouver:
Danielsson A. Development of an Off-Road Electric Wheelchair : A Study of the Vehicle-to-Ground Interface. [Internet] [Thesis]. Luleå University of Technology; 2015. [cited 2019 Dec 11].
Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-58890.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Danielsson A. Development of an Off-Road Electric Wheelchair : A Study of the Vehicle-to-Ground Interface. [Thesis]. Luleå University of Technology; 2015. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-58890
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
13.
Komárková, Kristina.
Design obytného přívěsu
.
Degree: 2017, Brno University of Technology
URL: http://hdl.handle.net/11012/66711
► Diplomová práce popisuje vznik designu obytného přívěsu. Hlavním cílem práce bylo vytvořit návrh skládacího přívěsu v off-roadové konfiguraci. Výsledný návrh přináší nový pohled na řešení…
(more)
▼ Diplomová práce popisuje vznik designu obytného přívěsu. Hlavním cílem práce bylo vytvořit návrh skládacího přívěsu v
off-roadové konfiguraci. Výsledný návrh přináší nový pohled na řešení skládacích karavanů a přívěsů, především ve využití nafukovací technologie pro konstrukci rozkládací stanové vložky. Jsou redukovány základní parametry a tvarové řešení v cestovním stavu je provedeno minimalisticky s ohledem na využití rozkládacího systému.; This master’s thesis describes the design of the travel trailer. The main aim of the work was to create a draft of a folding trailer in
off-
road configuration. The final design brings a new look at the solution of folding caravans and trailers, especially in the use of inflatable technology for the construction of a folding tent liner. The basic parameters are reduced and the shape solution in the travel state is minimalistic with regard to the use of the folding system.
Advisors/Committee Members: Sládek, Josef (advisor).
Subjects/Keywords: Obytný přívěs;
karavan;
off-road;
terénní;
skládací;
nafukovací;
konstrukce;
design;
Travel trailer;
caravan;
off-road;
terrain;
collapsible;
inflatable;
structure;
design
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APA ·
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Manager
APA (6th Edition):
Komárková, K. (2017). Design obytného přívěsu
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/66711
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):
Komárková, Kristina. “Design obytného přívěsu
.” 2017. Thesis, Brno University of Technology. Accessed December 11, 2019.
http://hdl.handle.net/11012/66711.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Komárková, Kristina. “Design obytného přívěsu
.” 2017. Web. 11 Dec 2019.
Vancouver:
Komárková K. Design obytného přívěsu
. [Internet] [Thesis]. Brno University of Technology; 2017. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/11012/66711.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Komárková K. Design obytného přívěsu
. [Thesis]. Brno University of Technology; 2017. Available from: http://hdl.handle.net/11012/66711
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
14.
Horák, Martin.
Design terénního vozidla
.
Degree: 2015, Brno University of Technology
URL: http://hdl.handle.net/11012/39790
► Hlavním cílem diplomové práce je vytvoření designu terénního automobilu. Vůz se stal koncepční vizí ekologického off-roadu budoucnosti poháněného vodíkovými pa- livovými články. Další cíle práce…
(more)
▼ Hlavním cílem diplomové práce je vytvoření designu terénního automobilu. Vůz se stal koncepční vizí ekologického
off-roadu budoucnosti poháněného vodíkovými pa- livovými články. Další cíle práce jsou: vnést prvky tvarové inovace mezi konveční ře- šení designu terénních automobilů a upozornit na otázky spojené s ekologií, ochranou životního prostředí a omezených zdrojů fosilních paliv.; The main goal of this diploma thesis is to create a design of an
off-
road vehicle. The vehicle has become a concept vision of an ecological
off-
road of the future fueled by hydrogen fuel cells. The secondary goal is: to bring new innovative form elements into conventional design solution of
off-
road vehicles and to highlight the problem with ecology, environmental protection and limited resources of fossil fuels.
Advisors/Committee Members: Křenek, Ladislav (advisor).
Subjects/Keywords: Design;
off-road;
terénní automobil;
vodík;
palivový článek;
elektromobil;
Design;
Off-road;
terrain vehicle;
hydrogen;
fuel cell;
electromobile
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Horák, M. (2015). Design terénního vozidla
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/39790
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):
Horák, Martin. “Design terénního vozidla
.” 2015. Thesis, Brno University of Technology. Accessed December 11, 2019.
http://hdl.handle.net/11012/39790.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Horák, Martin. “Design terénního vozidla
.” 2015. Web. 11 Dec 2019.
Vancouver:
Horák M. Design terénního vozidla
. [Internet] [Thesis]. Brno University of Technology; 2015. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/11012/39790.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Horák M. Design terénního vozidla
. [Thesis]. Brno University of Technology; 2015. Available from: http://hdl.handle.net/11012/39790
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Queensland University of Technology
15.
Griffin, Wanda M.
Male and female, cyclist and driver perceptions of crash risk in critical road situations.
Degree: 2015, Queensland University of Technology
URL: https://eprints.qut.edu.au/81817/
► Male and Female, Cyclist and Driver Perceptions of Crash Risk in Critical Road Situations. Governments are promoting cycling but many Australians, particularly women, do not…
(more)
▼ Male and Female, Cyclist and Driver Perceptions of Crash Risk in Critical Road Situations.
Governments are promoting cycling but many Australians, particularly women, do not ride because they perceive it to be too risky. This research compared the risks perceived by female and male, cyclists and drivers in specific on-road situations, accounting for factors such as travel patterns and experience, perceived skill, and risk taking behaviours. Compared to their male counterparts, female cyclists and drivers gave similarly elevated perceptions of risk. These differences are not completely accounted for by cycling patterns or perceptions of skill. Thus, these gender differences are not specific to cycling, but may reflect wider differences in risk perception.
Subjects/Keywords: Bicycling; cyclists; drivers; gender; Australia; France; Perceived risk; Objective risk; road safety; Male and female percieved risk
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APA (6th Edition):
Griffin, W. M. (2015). Male and female, cyclist and driver perceptions of crash risk in critical road situations. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/81817/
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):
Griffin, Wanda M. “Male and female, cyclist and driver perceptions of crash risk in critical road situations.” 2015. Thesis, Queensland University of Technology. Accessed December 11, 2019.
https://eprints.qut.edu.au/81817/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Griffin, Wanda M. “Male and female, cyclist and driver perceptions of crash risk in critical road situations.” 2015. Web. 11 Dec 2019.
Vancouver:
Griffin WM. Male and female, cyclist and driver perceptions of crash risk in critical road situations. [Internet] [Thesis]. Queensland University of Technology; 2015. [cited 2019 Dec 11].
Available from: https://eprints.qut.edu.au/81817/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Griffin WM. Male and female, cyclist and driver perceptions of crash risk in critical road situations. [Thesis]. Queensland University of Technology; 2015. Available from: https://eprints.qut.edu.au/81817/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Pretoria
16.
Cronje, Paul Hendrik.
Improving
off-road vehicle handling using an active anti-roll bar.
Degree: Mechanical and Aeronautical
Engineering, 2009, University of Pretoria
URL: http://hdl.handle.net/2263/29832
► This thesis investigates the use of an active anti-roll bar as a means of improving the handling of an off-road vehicle. The active anti-roll bar…
(more)
▼ This thesis investigates the use of an active anti-roll
bar as a means of improving the handling of an
off-
road vehicle.
The active anti-roll bar consists of a stiff anti-roll bar and a
hydraulic actuator at the one end between the anti-roll bar and the
rear axle of the vehicle. The system is designed so that the
anti-roll bar can be preloaded in both directions by the actuator.
The displacement of the hydraulic actuator is close loop controlled
to be a function of the lateral acceleration of the vehicle, which
is measured by an accelerometer. For this study, full vehicle
simulations were done in ADAMS/View to predict the response of the
proposed solutions. A Land Rover Defender 110 was used as the test
vehicle to verify the results of the simulations. Constant radius
tests and the severe double-lane-change manoeuvre, which are
standard handling tests, were used to determine the vehicle’s
handling performance. Handling performance was quantified by
measuring the body roll angle during the manoeuvre and noting the
maximum roll angle. The effect of the active anti-roll bar on ride
comfort was measured by driving over Belgian paving at a constant
speed. The results show that the proposed system reduces the body
roll angle to zero up to a lateral acceleration of 0.4 g during
steady state handling and provided a 74% improvement in maximum
body roll angle during a double-lane-change-manoeuvre at 70 km/h.
The system has no detrimental effect on the ride comfort of the
vehicle.
Advisors/Committee Members: Prof P S Els (advisor).
Subjects/Keywords: Active
anti-roll bar; Off-road
vehicle handling;
UCTD
Record Details
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Record Details
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Cronje, P. H. (2009). Improving
off-road vehicle handling using an active anti-roll bar. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/29832
Chicago Manual of Style (16th Edition):
Cronje, Paul Hendrik. “Improving
off-road vehicle handling using an active anti-roll bar.” 2009. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://hdl.handle.net/2263/29832.
MLA Handbook (7th Edition):
Cronje, Paul Hendrik. “Improving
off-road vehicle handling using an active anti-roll bar.” 2009. Web. 11 Dec 2019.
Vancouver:
Cronje PH. Improving
off-road vehicle handling using an active anti-roll bar. [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/2263/29832.
Council of Science Editors:
Cronje PH. Improving
off-road vehicle handling using an active anti-roll bar. [Masters Thesis]. University of Pretoria; 2009. Available from: http://hdl.handle.net/2263/29832
University of Pretoria
17.
Stallmann, M.J. (Martin Joachim).
Tyre model
verification over off-road terrain.
Degree: Mechanical and Aeronautical
Engineering, 2014, University of Pretoria
URL: http://hdl.handle.net/2263/41012
► Vehicle dynamic simulations form a significant part of the design and development process of vehicles. These simulations are used to study and improve the vehicle’s…
(more)
▼ Vehicle dynamic simulations form a significant part of
the design and development process of vehicles. These simulations
are used to study and improve the vehicle’s durability, ride
comfort and handling capabilities. All forces acting on the vehicle
are either generated in the tyre-
road interface or are due to
aerodynamic effects, where at low speeds the latter one can be
ignored. The accuracy of the tyre model describing the forces on
the tyre-
road interface is thus of exceptional importance. It
ensures that the simulation model is an accurate representation of
the actual vehicle.
Various approaches are adopted when developing
mathematical tyre models. Many of these models are developed to
study the handling capabilities of passenger cars over a smooth
road. Passenger car tyres are the focal point as larger tyres
introduce some difficulties due to their size and load rating.
Off-
road truck tyres also differ in their construction which will
influence force and moment generation of the tyre. Research efforts
are increasing to meet the need of tyre models that can describe
the behaviour of the tyre over uneven terrain with sufficient
accuracy. This thesis addresses the question of whether existing
mathematical tyre models can accurately describe the forces and
moments generated by a large
off-
road tyre while driving over rough
terrain.
The complexity of different mathematical tyre models
varies greatly, as does the parameterisation efforts required to
obtain the model parameters. The parameterization of most tyre
models relies on some experimental test data that is used to
extract the necessary information to fit model parameters. The
selection of a suitable tyre model for a simulation is often
dependent on the availability of such experimental data and the
effort to identify the required parameters. In this study the
parameterisation process for four different tyre models, are
discussed in detail to highlight the difficulties in acquiring the
test data and the effort to parameterize the model. The models
considered are the One Point Contact, 3D Equivalent Volume contact,
3D Enveloping Contact and FTire model.
Experimental measurements
are conducted on a 16.00R20 Michelin XZL tyre. Laboratory tests, as
well as field tests, over discrete obstacles and uneven hard
surfaces are used for parameterisation and validation purposes.
Simulation results are compared to experimental test data to
determine whether the models could be used to describe the tyre
road interactions with sufficient accuracy. Recommendations are
made for tyre model selection and model accuracy for simulations
over rough
off-
road surfaces.
Advisors/Committee Members: Els, P.S. (Pieter Schalk) (advisor).
Subjects/Keywords: Tyre
model; Off-road
terrain;
Vehicles;
Ride;
Durability;
UCTD
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Stallmann, M. J. (. J. (2014). Tyre model
verification over off-road terrain. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/41012
Chicago Manual of Style (16th Edition):
Stallmann, M J (Martin Joachim). “Tyre model
verification over off-road terrain.” 2014. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://hdl.handle.net/2263/41012.
MLA Handbook (7th Edition):
Stallmann, M J (Martin Joachim). “Tyre model
verification over off-road terrain.” 2014. Web. 11 Dec 2019.
Vancouver:
Stallmann MJ(J. Tyre model
verification over off-road terrain. [Internet] [Masters thesis]. University of Pretoria; 2014. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/2263/41012.
Council of Science Editors:
Stallmann MJ(J. Tyre model
verification over off-road terrain. [Masters Thesis]. University of Pretoria; 2014. Available from: http://hdl.handle.net/2263/41012
University of Pretoria
18.
Kapp, Michael.
Robust High
Speed Autonomous Steering of an Off-Road Vehicle.
Degree: Mechanical and Aeronautical
Engineering, 2015, University of Pretoria
URL: http://hdl.handle.net/2263/43784
► A ground vehicle is a dynamic system containing many non-linear components, ranging from the non-linear engine response to the tyre-road interface. In pursuit of developing…
(more)
▼ A ground vehicle is a dynamic system containing many
non-linear components, ranging from the non-linear engine response
to the tyre-
road interface. In pursuit of developing driver-assist
systems for accident avoidance, as well as fully autonomous
vehicles, the application of modern mechatronics systems to
vehicles are widely investigated. Extensive work has been done in
an attempt to model and control the lateral response of the vehicle
system utilising a wide variety of conventional control and
intelligent systems theory. The majority of driver models are
however intended for low speed applications where the vehicle
dynamics are fairly linear. This study proposes the use of adaptive
control strategies as robust driver models capable of steering the
vehicle without explicit knowledge of vehicle parameters. A Model
Predictive Controller (MPC), self-tuning regulator and Linear
Quadratic Self-Tuning Regulator (LQSTR) updated through the use of
an Auto Regression with eXogenous input (ARX) model that describes
the relation between the vehicle steering angle and yaw rate are
considered as solutions. The strategies are evaluated by performing
a double lane change in simulation using a validated full vehicle
model in MSC ADAMS and comparing the maximum stable speed and
lateral offset from the required path. It is found that all the
adaptive controllers are able to successfully steer the vehicle
through the manoeuvre with no prior knowledge of the vehicle
parameters. An LQSTR proves to be the best adaptive strategy for
driver model applications, delivering a stable response well into
the non-linear tyre force regime. This controller is implemented on
a fully instrumented Land Rover 110 of the Vehicle Dynamics Group
at the University of Pretoria fitted with a semi-active
spring-damper suspension that can be switched between two discrete
setting representing opposite extremes of the desired response
namely: ride mode (soft spring and low damping) and handling mode
(stiff spring and high damping). The controller yields a stable
response through a severe double lane change (DLC) up to the
handling limit of the vehicle, safely completing the DLC at a
maximum speed of 90 km/h all suspension configurations. The LQSTR
also proves to be robust by following the same path for all
suspension configurations through the manoeuvre for vehicle speeds
up to 75 km/h. Validation is continued by successfully navigating
the Gerotek dynamic handling track, as well as by performing a DLC
manoeuvre on an
off-
road terrain. The study successfully developed
and validated a driver model that is robust against variations in
vehicle parameters and friction coefficients.
Advisors/Committee Members: Els, P.S. (Pieter Schalk) (advisor).
Subjects/Keywords: Vehicle
Engineering; Autonomous
Vehicle; Optimal
Control; Off-road
vehicle dynamics; UCTD
Record Details
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Share »
Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kapp, M. (2015). Robust High
Speed Autonomous Steering of an Off-Road Vehicle. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/43784
Chicago Manual of Style (16th Edition):
Kapp, Michael. “Robust High
Speed Autonomous Steering of an Off-Road Vehicle.” 2015. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://hdl.handle.net/2263/43784.
MLA Handbook (7th Edition):
Kapp, Michael. “Robust High
Speed Autonomous Steering of an Off-Road Vehicle.” 2015. Web. 11 Dec 2019.
Vancouver:
Kapp M. Robust High
Speed Autonomous Steering of an Off-Road Vehicle. [Internet] [Masters thesis]. University of Pretoria; 2015. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/2263/43784.
Council of Science Editors:
Kapp M. Robust High
Speed Autonomous Steering of an Off-Road Vehicle. [Masters Thesis]. University of Pretoria; 2015. Available from: http://hdl.handle.net/2263/43784
University of Pretoria
19.
Breytenbach, Hendrik Gerhardus Abraham.
Optimal vehicle
suspension characteristics for increased structural fatigue
life.
Degree: Mechanical and Aeronautical
Engineering, 2010, University of Pretoria
URL: http://hdl.handle.net/2263/27991
► The designers of heavy, off-road vehicle suspension systems face unique challenges. The ride comfort versus handling compromise in these vehicles has been frequently investigated using…
(more)
▼ The designers of heavy,
off-
road vehicle suspension
systems face unique challenges. The ride comfort versus handling
compromise in these vehicles has been frequently investigated using
mathematical optimisation. Further challenges exist due to the
large variations in vehicle sprung mass. The suspension system must
provide adequate isolation from
road load inputs throughout its
payload operating range. This is imperative if good vehicle
structural life is to be ensured. A passive suspension system can
only provide optimal isolation at a single payload. The designer of
such a suspension system must therefore make a compromise between
designing for a fully-laden or unladen payload state. This work
deals with suspension optimisation for vehicle structural life. The
work mainly addresses two questions: 1) What are the suspension
characteristics required to ensure optimal isolation of the vehicle
structure from
road loads? and 2) If such optimal suspension
characteristics can be found, how sensitive are they to changes in
vehicle payload? The study aims to answer these questions by
examining a Land Rover Defender 110 as case study. An
experimentally validated mathematical model of the test vehicle is
constructed for the use in sensitivity studies. Mathematical
optimisation is performed using the model in order to find the
suspension characteristics for optimal structural life of the
vehicle under consideration. Sensitivity studies are conducted to
determine the robustness of the optimal characteristics and their
sensitivity to vehicle payload variation. Recommendations are made
for suspension characteristic selection for optimal structural
life. AFRIKAANS : Ontwerpers van swaar, veldvoertuig suspensie
stelsels staar unieke uitdagings in die gesig. Die ritgemak teenoor
hantering kompromie in hierdie voertuie is reeds telkemale
ondersoek, ook met wiskundige optimering. Verdere uitdagings
bestaan as gevolg van die groot veranderinge in geveerde massa by
hierdie voertuie. Die suspensiestelsel moet gepaste isolasie van
pad insette oor `n wye reeks van bedryfstoestande lewer. Dit is
veral belangrik indien daar verseker wil word dat die voertuig
goeie struktuurleeftyd het. `n Passiewe suspensiestelsel kan egter
slegs optimale isolasie by `n enkele vragtoestand lewer. Die
ontwerper van `n passiewe suspensie stelsel moet dus `n kompromie
aangaan tussen ontwerp vir `n vol of leë vragtoestand. Hierdie
studie handel oor suspensie optimering vir struktuur leeftyd. Die
werk spreek hoofsaaklik twee vraagstukke aan: 1) Watter suspensie
karakteristieke word benodig om die voertuig struktuur optimaal van
padinsette te isoleer? en 2) Indien sulke optimale karakteristieke
gevind kan word, wat is hulle sensitiwiteit vir veranderinge in
voertuig vrag? Die studie mik om hierdie vraagstukke aan te spreek
deur ondersoeke op `n Land Rover Defender 110 toetsvoertuig. `n
Eksperimenteel gevalideerde, wiskundige model van die toetsvoertuig
word saamgestel met die oog op sensitiwiteitstudies. Wiskundige
optimering word met die model uitgevoer om…
Advisors/Committee Members: Prof P S Els (advisor).
Subjects/Keywords: Structural
fatigue life; Off-road
vehicle suspension system; Vehicle
suspension;
UCTD
Record Details
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Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Breytenbach, H. G. A. (2010). Optimal vehicle
suspension characteristics for increased structural fatigue
life. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/27991
Chicago Manual of Style (16th Edition):
Breytenbach, Hendrik Gerhardus Abraham. “Optimal vehicle
suspension characteristics for increased structural fatigue
life.” 2010. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://hdl.handle.net/2263/27991.
MLA Handbook (7th Edition):
Breytenbach, Hendrik Gerhardus Abraham. “Optimal vehicle
suspension characteristics for increased structural fatigue
life.” 2010. Web. 11 Dec 2019.
Vancouver:
Breytenbach HGA. Optimal vehicle
suspension characteristics for increased structural fatigue
life. [Internet] [Masters thesis]. University of Pretoria; 2010. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/2263/27991.
Council of Science Editors:
Breytenbach HGA. Optimal vehicle
suspension characteristics for increased structural fatigue
life. [Masters Thesis]. University of Pretoria; 2010. Available from: http://hdl.handle.net/2263/27991
University of Pretoria
20.
[No author].
Improving off-road vehicle handling using an active
anti-roll bar
.
Degree: 2009, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-11262009-011206/
► This thesis investigates the use of an active anti-roll bar as a means of improving the handling of an off-road vehicle. The active anti-roll bar…
(more)
▼ This thesis investigates the use of an active
anti-roll bar as a means of improving the handling of an
off-
road
vehicle. The active anti-roll bar consists of a stiff anti-roll bar
and a hydraulic actuator at the one end between the anti-roll bar
and the rear axle of the vehicle. The system is designed so that
the anti-roll bar can be preloaded in both directions by the
actuator. The displacement of the hydraulic actuator is close loop
controlled to be a function of the lateral acceleration of the
vehicle, which is measured by an accelerometer. For this study,
full vehicle simulations were done in ADAMS/View to predict the
response of the proposed solutions. A Land Rover Defender 110 was
used as the test vehicle to verify the results of the simulations.
Constant radius tests and the severe double-lane-change manoeuvre,
which are standard handling tests, were used to determine the
vehicle’s handling performance. Handling performance was quantified
by measuring the body roll angle during the manoeuvre and noting
the maximum roll angle. The effect of the active anti-roll bar on
ride comfort was measured by driving over Belgian paving at a
constant speed. The results show that the proposed system reduces
the body roll angle to zero up to a lateral acceleration of 0.4 g
during steady state handling and provided a 74% improvement in
maximum body roll angle during a double-lane-change-manoeuvre at 70
km/h. The system has no detrimental effect on the ride comfort of
the vehicle.
Advisors/Committee Members: Prof P S Els (advisor).
Subjects/Keywords: Active anti-roll bar;
Off-road vehicle handling;
UCTD
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
author], [. (2009). Improving off-road vehicle handling using an active
anti-roll bar
. (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-11262009-011206/
Chicago Manual of Style (16th Edition):
author], [No. “Improving off-road vehicle handling using an active
anti-roll bar
.” 2009. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://upetd.up.ac.za/thesis/available/etd-11262009-011206/.
MLA Handbook (7th Edition):
author], [No. “Improving off-road vehicle handling using an active
anti-roll bar
.” 2009. Web. 11 Dec 2019.
Vancouver:
author] [. Improving off-road vehicle handling using an active
anti-roll bar
. [Internet] [Masters thesis]. University of Pretoria; 2009. [cited 2019 Dec 11].
Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-011206/.
Council of Science Editors:
author] [. Improving off-road vehicle handling using an active
anti-roll bar
. [Masters Thesis]. University of Pretoria; 2009. Available from: http://upetd.up.ac.za/thesis/available/etd-11262009-011206/
University of Pretoria
21.
Breytenbach, Hendrik Gerhardus
Abraham.
Optimal vehicle suspension characteristics for
increased structural fatigue life
.
Degree: 2010, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-09172010-190101/
► The designers of heavy, off-road vehicle suspension systems face unique challenges. The ride comfort versus handling compromise in these vehicles has been frequently investigated using…
(more)
▼ The designers of heavy,
off-
road vehicle suspension
systems face unique challenges. The ride comfort versus handling
compromise in these vehicles has been frequently investigated using
mathematical optimisation. Further challenges exist due to the
large variations in vehicle sprung mass. The suspension system must
provide adequate isolation from
road load inputs throughout its
payload operating range. This is imperative if good vehicle
structural life is to be ensured. A passive suspension system can
only provide optimal isolation at a single payload. The designer of
such a suspension system must therefore make a compromise between
designing for a fully-laden or unladen payload state. This work
deals with suspension optimisation for vehicle structural life. The
work mainly addresses two questions: 1) What are the suspension
characteristics required to ensure optimal isolation of the vehicle
structure from
road loads? and 2) If such optimal suspension
characteristics can be found, how sensitive are they to changes in
vehicle payload? The study aims to answer these questions by
examining a Land Rover Defender 110 as case study. An
experimentally validated mathematical model of the test vehicle is
constructed for the use in sensitivity studies. Mathematical
optimisation is performed using the model in order to find the
suspension characteristics for optimal structural life of the
vehicle under consideration. Sensitivity studies are conducted to
determine the robustness of the optimal characteristics and their
sensitivity to vehicle payload variation. Recommendations are made
for suspension characteristic selection for optimal structural
life. AFRIKAANS : Ontwerpers van swaar, veldvoertuig suspensie
stelsels staar unieke uitdagings in die gesig. Die ritgemak teenoor
hantering kompromie in hierdie voertuie is reeds telkemale
ondersoek, ook met wiskundige optimering. Verdere uitdagings
bestaan as gevolg van die groot veranderinge in geveerde massa by
hierdie voertuie. Die suspensiestelsel moet gepaste isolasie van
pad insette oor `n wye reeks van bedryfstoestande lewer. Dit is
veral belangrik indien daar verseker wil word dat die voertuig
goeie struktuurleeftyd het. `n Passiewe suspensiestelsel kan egter
slegs optimale isolasie by `n enkele vragtoestand lewer. Die
ontwerper van `n passiewe suspensie stelsel moet dus `n kompromie
aangaan tussen ontwerp vir `n vol of leë vragtoestand. Hierdie
studie handel oor suspensie optimering vir struktuur leeftyd. Die
werk spreek hoofsaaklik twee vraagstukke aan: 1) Watter suspensie
karakteristieke word benodig om die voertuig struktuur optimaal van
padinsette te isoleer? en 2) Indien sulke optimale karakteristieke
gevind kan word, wat is hulle sensitiwiteit vir veranderinge in
voertuig vrag? Die studie mik om hierdie vraagstukke aan te spreek
deur ondersoeke op `n Land Rover Defender 110 toetsvoertuig. `n
Eksperimenteel gevalideerde, wiskundige model van die toetsvoertuig
word saamgestel met die oog op sensitiwiteitstudies. Wiskundige
optimering word met die model uitgevoer om…
Advisors/Committee Members: Prof P S Els (advisor).
Subjects/Keywords: Structural fatigue life;
Off-road vehicle suspension system;
Vehicle suspension;
UCTD
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Breytenbach, H. G. (2010). Optimal vehicle suspension characteristics for
increased structural fatigue life
. (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-09172010-190101/
Chicago Manual of Style (16th Edition):
Breytenbach, Hendrik Gerhardus. “Optimal vehicle suspension characteristics for
increased structural fatigue life
.” 2010. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://upetd.up.ac.za/thesis/available/etd-09172010-190101/.
MLA Handbook (7th Edition):
Breytenbach, Hendrik Gerhardus. “Optimal vehicle suspension characteristics for
increased structural fatigue life
.” 2010. Web. 11 Dec 2019.
Vancouver:
Breytenbach HG. Optimal vehicle suspension characteristics for
increased structural fatigue life
. [Internet] [Masters thesis]. University of Pretoria; 2010. [cited 2019 Dec 11].
Available from: http://upetd.up.ac.za/thesis/available/etd-09172010-190101/.
Council of Science Editors:
Breytenbach HG. Optimal vehicle suspension characteristics for
increased structural fatigue life
. [Masters Thesis]. University of Pretoria; 2010. Available from: http://upetd.up.ac.za/thesis/available/etd-09172010-190101/
Ohio University
22.
Albright, Amy N.
An Analysis of Slope Erosion and Surface Changes on Off-Road
Vehicle Trails in Southeastern Ohio.
Degree: MA, Geography (Arts and Sciences), 2010, Ohio University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1276715617
► Few studies have researched the effects of off-road vehicles (ORVs) on trail surfaces in humid regions, particularly the ability of soil models to estimate…
(more)
▼ Few studies have researched the effects of
off-
road vehicles (ORVs) on trail surfaces in humid regions,
particularly the ability of soil models to estimate erosion, the
geomorphic change in the trail surface, or the effectiveness of
grade reversals in reducing erosion. This research examines
cross-trail profile measurements of 11 ORV trail segments in
southeastern Ohio over a six month period in order to calculate the
erosion occurring in both the ORV riding season and the
off season.
Field measurements are compared to the output of two soil erosion
models, WEPP and WEPP:
Road. Spatial patterns of erosion,
compaction, and soil texture, and the geomorphic change in the
trail surface are also analyzed. Results show
that both WEPP and WEPP:
Road models grossly underestimate the
amount of soil erosion measured on the studied trail segments. The
highest measured erosion rate totaled 116 kg/m2/yr. Significant
geomorphic changes in cross-trail profiles were not detected during
the six month study. Spatial patterns reveal the dominance of
erosion over the study period for upslope and mid-slope locations,
and a tendency for deposition at segment-bottom locations just
upslope from grade reversals, proving the effectiveness of some of
the grade reversals. Statistically significant higher compaction
values were found in the tire ruts and along the inside strip of
the trail, compared to the outside edges. Surface materials at the
slope bottoms were significantly sandier and contained clay than
surface materials at the midslopes or the top of the slopes.
Results of this study demonstrate spatial patterns of soil erosion
and compaction on the ORV trail surfaces and the need for improved
models for predicting soil erosion from ORV
trails.
Advisors/Committee Members: Sack, Dorothy (Committee Chair).
Subjects/Keywords: Geography; off-road vehicles; ORVs; soil erosion; compaction; trails
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APA (6th Edition):
Albright, A. N. (2010). An Analysis of Slope Erosion and Surface Changes on Off-Road
Vehicle Trails in Southeastern Ohio. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1276715617
Chicago Manual of Style (16th Edition):
Albright, Amy N. “An Analysis of Slope Erosion and Surface Changes on Off-Road
Vehicle Trails in Southeastern Ohio.” 2010. Masters Thesis, Ohio University. Accessed December 11, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1276715617.
MLA Handbook (7th Edition):
Albright, Amy N. “An Analysis of Slope Erosion and Surface Changes on Off-Road
Vehicle Trails in Southeastern Ohio.” 2010. Web. 11 Dec 2019.
Vancouver:
Albright AN. An Analysis of Slope Erosion and Surface Changes on Off-Road
Vehicle Trails in Southeastern Ohio. [Internet] [Masters thesis]. Ohio University; 2010. [cited 2019 Dec 11].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1276715617.
Council of Science Editors:
Albright AN. An Analysis of Slope Erosion and Surface Changes on Off-Road
Vehicle Trails in Southeastern Ohio. [Masters Thesis]. Ohio University; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1276715617
Virginia Tech
23.
Pinto, Eduardo Jose.
A Three Dimensional Discretized Tire Model For Soft Soil Applications.
Degree: MS, Mechanical Engineering, 2012, Virginia Tech
URL: http://hdl.handle.net/10919/41335
► A significant number of studies address various aspects related to tire modeling; most are dedicated to the development of tire models for on-road conditions. Such…
(more)
▼ A significant number of studies address various aspects related to tire modeling; most are dedicated to the development of tire models for on-
road conditions. Such models cover a wide range of resolutions and approaches, as required for specific applications. At one end of the spectrum are the very simple tire models, such as those employed in real-time vehicle dynamic simulations. At the other end of the spectrum are the very complex finite element models, such as those used in tire design. In between these extremes, various other models have been developed, at different levels of compromise between accuracy and computational efficiency. Existing tire models for
off-
road applications lag behind the on-
road models. The main reason is the complexity added to the modeling due to the interaction with the soft soil. In such situations, one must account for the soil dynamics and its impact on the tire forces, in addition to those aspects considered for an on-
road tire.
The goal of this project is to develop an accurate and comprehensive, while also efficient,
off-
road tire model for soft soil applications. The types of applications we target are traction, handling, and vehicle durability, as needed to support current army mobility goals. Thus, the proposed approach is to develop a detailed semi-analytical tire model for soft soil that utilizes the tire construction details and parallels existing commercially available on-
road tire models. The novelty of this project relies in developing a three-dimensional three-layer tire model employing discrete lumped masses and in improving the tire-soil interface model. This will be achieved by enhancing the resolution of the tire model at the contact patch and by accounting for effects and phenomena not considered in existing models.
Advisors/Committee Members: Sandu, Corina (committeechair), West, Robert L. Jr. (committee member), Ferris, John B. (committee member).
Subjects/Keywords: terramechanics; soft soil tire model; vehicle dynamics; off-road
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Manager
APA (6th Edition):
Pinto, E. J. (2012). A Three Dimensional Discretized Tire Model For Soft Soil Applications. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/41335
Chicago Manual of Style (16th Edition):
Pinto, Eduardo Jose. “A Three Dimensional Discretized Tire Model For Soft Soil Applications.” 2012. Masters Thesis, Virginia Tech. Accessed December 11, 2019.
http://hdl.handle.net/10919/41335.
MLA Handbook (7th Edition):
Pinto, Eduardo Jose. “A Three Dimensional Discretized Tire Model For Soft Soil Applications.” 2012. Web. 11 Dec 2019.
Vancouver:
Pinto EJ. A Three Dimensional Discretized Tire Model For Soft Soil Applications. [Internet] [Masters thesis]. Virginia Tech; 2012. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/10919/41335.
Council of Science Editors:
Pinto EJ. A Three Dimensional Discretized Tire Model For Soft Soil Applications. [Masters Thesis]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/41335
University of Manitoba
24.
Bistyak, Garry.
Development of an off-road EV research platform.
Degree: Electrical and Computer Engineering, 2019, University of Manitoba
URL: http://hdl.handle.net/1993/34192
► This thesis describes the design and construction of an off-road battery electric research vehicle. The vehicle is based on a one motor per wheel drivetrain…
(more)
▼ This thesis describes the design and construction of an
off-
road battery electric research vehicle. The vehicle is based on a one motor per wheel drivetrain topology. It has a flexible and powerful vehicle control module based on a field programmable gate array (FPGA). Vehicle performance and implementation requirements that form the basis of the vehicle design are presented. A model of the vehicle dynamics is developed, which is then used to simulate the vehicle behavior and validate that important performance specifications are met. The details of design and construction are described and illustrated. Vehicle performance results are presented and discussed. Finally a summary of the completed work is presented.
Advisors/Committee Members: Filizadeh, Shaahin (Electrical and Computer Engineering) (supervisor), Shafai, Cyrus (Electrical and Computer Engineering).
Subjects/Keywords: electric vehicle; EV research platform; off-road traction
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bistyak, G. (2019). Development of an off-road EV research platform. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/34192
Chicago Manual of Style (16th Edition):
Bistyak, Garry. “Development of an off-road EV research platform.” 2019. Masters Thesis, University of Manitoba. Accessed December 11, 2019.
http://hdl.handle.net/1993/34192.
MLA Handbook (7th Edition):
Bistyak, Garry. “Development of an off-road EV research platform.” 2019. Web. 11 Dec 2019.
Vancouver:
Bistyak G. Development of an off-road EV research platform. [Internet] [Masters thesis]. University of Manitoba; 2019. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/1993/34192.
Council of Science Editors:
Bistyak G. Development of an off-road EV research platform. [Masters Thesis]. University of Manitoba; 2019. Available from: http://hdl.handle.net/1993/34192
University of Pretoria
25.
Hugo, Daniel.
Haul road defect
identification and condition assessment using measured truck
response.
Degree: MEng, Mechanical and Aeronautical
Engineering, 2008, University of Pretoria
URL: http://hdl.handle.net/2263/26341
► Mine haul road maintenance is traditionally done at scheduled intervals or after regular inspection. Both these methods can lead to unwarranted expenditure, either through over-maintaining…
(more)
▼ Mine haul
road maintenance is traditionally done at
scheduled intervals or after regular inspection. Both these methods
can lead to unwarranted expenditure, either through
over-maintaining the
road, or failure to recognise significant
deterioration, resulting in an increase in vehicle operating costs.
Predictive maintenance management models for unpaved roads have
been developed in recent years. These methods work well in a
trivial environment where variables such as traffic volume can be
predicted. However, many mining systems are too complex for such
models to be effective. This work investigates the possibility of
using haul truck response to aid haul
road maintenance management.
The approach adopted for the study was twofold: Firstly, can truck
response data be used to recognise specific
road defects, in terms
of location, type and size? This is important since different
defect types require different
road maintenance strategies.
Secondly, can
road roughness be measured on a qualitative basis?
With the emphasis on
road defect reconstruction, a mathematical
modelling approach was adopted. The truck was characterised in
terms of its suspension and tyre properties. Dynamic truck response
data was acquired during field measurements in which the vehicle
was driven over defects of known dimensions. With these data sets
available, mathematical modelling and simulation was possible.
Quarter vehicle and seven degree of freedom vehicle models played a
vital role in this work by laying a foundation in the use of haul
truck response for the purpose of
road defect reconstruction. A
modelling methodology that is based on dynamic equilibrium of an
independent front unsprung mass of the truck is proposed in which
the vertical dynamic tyre force and eventually the
road geometry is
calculated. It is shown that defects can be reconstructed from
measured truck response data with an accuracy sufficient to fulfil
the requirements of defect recognition for
road maintenance
management purposes. Secondly, a preliminary investigation into the
qualitative assessment of
road condition via truck response
measurements was conducted. The inherent response properties of the
truck pertaining to
road roughness measurement were studied and
some correlation between measured suspension motion and
road
roughness measured with a high speed profilometer was
found.
Advisors/Committee Members: Thompson, R.J. (advisor), Heyns, P.S. (Philippus Stephanus) (advisor).
Subjects/Keywords: Road roughness
assessment;
Hydro-pneumatic suspension struts; Mine haul road
maintenance management; Mine haul
trucks; Road defect
identification; Off-road
vehicles; Vehicle
modelling;
UCTD
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hugo, D. (2008). Haul road defect
identification and condition assessment using measured truck
response. (Masters Thesis). University of Pretoria. Retrieved from http://hdl.handle.net/2263/26341
Chicago Manual of Style (16th Edition):
Hugo, Daniel. “Haul road defect
identification and condition assessment using measured truck
response.” 2008. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://hdl.handle.net/2263/26341.
MLA Handbook (7th Edition):
Hugo, Daniel. “Haul road defect
identification and condition assessment using measured truck
response.” 2008. Web. 11 Dec 2019.
Vancouver:
Hugo D. Haul road defect
identification and condition assessment using measured truck
response. [Internet] [Masters thesis]. University of Pretoria; 2008. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/2263/26341.
Council of Science Editors:
Hugo D. Haul road defect
identification and condition assessment using measured truck
response. [Masters Thesis]. University of Pretoria; 2008. Available from: http://hdl.handle.net/2263/26341
University of Pretoria
26.
[No author].
Haul road defect identification and condition
assessment using measured truck response
.
Degree: 2008, University of Pretoria
URL: http://upetd.up.ac.za/thesis/available/etd-07162008-092104/
► Mine haul road maintenance is traditionally done at scheduled intervals or after regular inspection. Both these methods can lead to unwarranted expenditure, either through over-maintaining…
(more)
▼ Mine haul
road maintenance is traditionally done at
scheduled intervals or after regular inspection. Both these methods
can lead to unwarranted expenditure, either through
over-maintaining the
road, or failure to recognise significant
deterioration, resulting in an increase in vehicle operating costs.
Predictive maintenance management models for unpaved roads have
been developed in recent years. These methods work well in a
trivial environment where variables such as traffic volume can be
predicted. However, many mining systems are too complex for such
models to be effective. This work investigates the possibility of
using haul truck response to aid haul
road maintenance management.
The approach adopted for the study was twofold: Firstly, can truck
response data be used to recognise specific
road defects, in terms
of location, type and size? This is important since different
defect types require different
road maintenance strategies.
Secondly, can
road roughness be measured on a qualitative basis?
With the emphasis on
road defect reconstruction, a mathematical
modelling approach was adopted. The truck was characterised in
terms of its suspension and tyre properties. Dynamic truck response
data was acquired during field measurements in which the vehicle
was driven over defects of known dimensions. With these data sets
available, mathematical modelling and simulation was possible.
Quarter vehicle and seven degree of freedom vehicle models played a
vital role in this work by laying a foundation in the use of haul
truck response for the purpose of
road defect reconstruction. A
modelling methodology that is based on dynamic equilibrium of an
independent front unsprung mass of the truck is proposed in which
the vertical dynamic tyre force and eventually the
road geometry is
calculated. It is shown that defects can be reconstructed from
measured truck response data with an accuracy sufficient to fulfil
the requirements of defect recognition for
road maintenance
management purposes. Secondly, a preliminary investigation into the
qualitative assessment of
road condition via truck response
measurements was conducted. The inherent response properties of the
truck pertaining to
road roughness measurement were studied and
some correlation between measured suspension motion and
road
roughness measured with a high speed profilometer was
found.
Advisors/Committee Members: Thompson, R.J (advisor), Heyns, P.S. (Philippus Stephanus) (advisor).
Subjects/Keywords: Road roughness assessment;
Hydro-pneumatic suspension struts;
Mine haul road maintenance management;
Mine haul trucks;
Road defect identification;
Off-road vehicles;
Vehicle modelling;
UCTD
Record Details
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
author], [. (2008). Haul road defect identification and condition
assessment using measured truck response
. (Masters Thesis). University of Pretoria. Retrieved from http://upetd.up.ac.za/thesis/available/etd-07162008-092104/
Chicago Manual of Style (16th Edition):
author], [No. “Haul road defect identification and condition
assessment using measured truck response
.” 2008. Masters Thesis, University of Pretoria. Accessed December 11, 2019.
http://upetd.up.ac.za/thesis/available/etd-07162008-092104/.
MLA Handbook (7th Edition):
author], [No. “Haul road defect identification and condition
assessment using measured truck response
.” 2008. Web. 11 Dec 2019.
Vancouver:
author] [. Haul road defect identification and condition
assessment using measured truck response
. [Internet] [Masters thesis]. University of Pretoria; 2008. [cited 2019 Dec 11].
Available from: http://upetd.up.ac.za/thesis/available/etd-07162008-092104/.
Council of Science Editors:
author] [. Haul road defect identification and condition
assessment using measured truck response
. [Masters Thesis]. University of Pretoria; 2008. Available from: http://upetd.up.ac.za/thesis/available/etd-07162008-092104/
27.
Poredoš, Tea.
Analiza prometne varnosti kolesarjev v Sloveniji med letoma 2009 in 2018.
Degree: 2019, Univerza v Mariboru
URL: https://dk.um.si/IzpisGradiva.php?id=74716
;
https://dk.um.si/Dokument.php?id=137873&dn=
;
https://plus.si.cobiss.net/opac7/bib/22707222?lang=sl
► Tako v Evropi kot tudi v Sloveniji v zadnjih letih poudarjamo uporabo trajnostnih prevoznih sredstev in mednje spada tudi kolo. Kolesarji so poleg pešcev bolj…
(more)
▼ Tako v Evropi kot tudi v Sloveniji v zadnjih letih poudarjamo uporabo trajnostnih prevoznih sredstev in mednje spada tudi kolo. Kolesarji so poleg pešcev bolj izpostavljeni v prometu kot ostali udeleženci in zato spadajo med ranljivejše udeležence v prometu. V prometnih nesrečah velikokrat utrpijo hude telesne poškodbe ali celo smrt in prav zato je pomembno, da na tem področju zagotovimo dobro prometno varnost. V magistrskem delu je predstavljena prometna varnost kolesarjev v Sloveniji. Opravili smo analizo prometnih nesreč z udeležbo kolesarjev med letoma 2009 in 2018 in rezultati kažejo, da število prometnih nesreč z udeležbo kolesarjev z leti rahlo pada, pada pa tudi število smrtnih žrtev med kolesarji. Večina kolesarjev je v prometnih nesrečah utrpela lažje telesne poškodbe, najpogostejši vzroki prometnih nesreč, v katerih so umrli kolesarji, pa so neupoštevanje pravil o prednosti, neprilagojena hitrost in nepravilna smer/stran vožnje. Večina
prometnih nesreč z udeležbo kolesarjev se je zgodila podnevi, večina kolesarjev je bila brez varnostne zaščitne čelade in niso bili pod vplivom alkohola. Glede na rezultate analize prometnih nesreč so opisane možne rešitve s področja načrtovanja kolesarske infrastrukture, naprednih varnostnih sistemov v vozilih, pravilne opreme kolesa in kolesarja ter izvajanja izobraževanj in preventivnih akcij.
In recent years, the focus in Europe and in Slovenia has been on the use of sustainable means of transport including cycling. Together with pedestrians, cyclists are the most vulnerable traffic participants. Consequently, cycling accidents often result in serious injuries or even in death. This is the reason why it is important to ensure adequate road safety for them. The master's thesis deals with the safety of cyclists in Slovenia. We have analysed road accidents involving cyclists between 2009 and 2018. The results show that the number of cycling accidents and bicycle fatalities has
slightly decreased over the years. Most cyclists have suffered minor injuries in the road accidents. The most common causes of the accidents in which cyclists have died are non-compliance with priority rules, speeding or improper direction of travel. Most cycling accidents happen during the day, the majority of the cyclists have not been wearing a safety helmet and have not been under the influence of alcohol. According to the results of the analysis of the traffic accidents, we have proposed possible improvements in the field of cycling infrastructure planning and advanced vehicle safety systems, use of suitable bicycle and cyclist equipment together with trainings and campaigns in preventive measures.
Advisors/Committee Members: Renčelj, Marko.
Subjects/Keywords: prometno inženirstvo; prometna varnost kolesarjev; analiza prometnih nesreč; infrastruktura za varnost kolesarjev; varnostni sistemi v vozilih; traffic engineering; cyclists road traffic safety; analysis of traffic accidents; cyclists safety infrastructure; safety systems in vehicles; info:eu-repo/classification/udc/656.183.08(043.2)
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Poredoš, T. (2019). Analiza prometne varnosti kolesarjev v Sloveniji med letoma 2009 in 2018. (Masters Thesis). Univerza v Mariboru. Retrieved from https://dk.um.si/IzpisGradiva.php?id=74716 ; https://dk.um.si/Dokument.php?id=137873&dn= ; https://plus.si.cobiss.net/opac7/bib/22707222?lang=sl
Chicago Manual of Style (16th Edition):
Poredoš, Tea. “Analiza prometne varnosti kolesarjev v Sloveniji med letoma 2009 in 2018.” 2019. Masters Thesis, Univerza v Mariboru. Accessed December 11, 2019.
https://dk.um.si/IzpisGradiva.php?id=74716 ; https://dk.um.si/Dokument.php?id=137873&dn= ; https://plus.si.cobiss.net/opac7/bib/22707222?lang=sl.
MLA Handbook (7th Edition):
Poredoš, Tea. “Analiza prometne varnosti kolesarjev v Sloveniji med letoma 2009 in 2018.” 2019. Web. 11 Dec 2019.
Vancouver:
Poredoš T. Analiza prometne varnosti kolesarjev v Sloveniji med letoma 2009 in 2018. [Internet] [Masters thesis]. Univerza v Mariboru; 2019. [cited 2019 Dec 11].
Available from: https://dk.um.si/IzpisGradiva.php?id=74716 ; https://dk.um.si/Dokument.php?id=137873&dn= ; https://plus.si.cobiss.net/opac7/bib/22707222?lang=sl.
Council of Science Editors:
Poredoš T. Analiza prometne varnosti kolesarjev v Sloveniji med letoma 2009 in 2018. [Masters Thesis]. Univerza v Mariboru; 2019. Available from: https://dk.um.si/IzpisGradiva.php?id=74716 ; https://dk.um.si/Dokument.php?id=137873&dn= ; https://plus.si.cobiss.net/opac7/bib/22707222?lang=sl
University of Canterbury
28.
Hoggarth, Petra Ann.
Prediction of Driving Ability in Healthy Older Adults and Adults with Alzheimer’s Dementia or Mild Cognitive Impairment.
Degree: Psychology, 2011, University of Canterbury
URL: http://hdl.handle.net/10092/5384
► Normal ageing is associated with decline in visual, cognitive, and physical functioning, with concurrent increases in the incidence of chronic medical conditions, including cognitive disorders.…
(more)
▼ Normal ageing is associated with decline in visual, cognitive, and physical functioning, with concurrent increases in the incidence of chronic medical conditions, including cognitive disorders. Determining when age-related changes have adversely affected a person’s ability to drive safely is a complex task, particularly when cognitive disorders such as mild cognitive impairment and dementia are present.
The aim of this research was to assess the utility of a number of off-road measures in predicting Pass and Fail outcomes for older drivers on a blinded on-road driving assessment with a driving specialist occupational therapist and a driving instructor, which is considered the ‘gold standard’ measure of driving ability. The off-road measures included standardized cognitive tests, computerized sensory-motor & cognitive tests, medical conditions, and
personality measures. The research project comprised three studies.
In Study 1 (Healthy Older Drivers study), 60 drivers with no diagnosed cognitive disorder (‘cognitively-unimpaired’), aged 70-84 years (mean age 76.7, 50% male), completed
standard cognitive tests, computerized sensory-motor and cognitive tests (SMCTests™), and measures of personality. Results were used to form classification models for on-road
assessment Pass and Fail outcome. Sixteen participants failed the on-road assessment. A backwards stepwise binary logistic regression model selected a measure of executive
function and a computerized measure of visuomotor planning and coordination as the best predictors. Following leave-one-out cross-validation, this model was estimated to correctly predict 60% of an independent group of cognitively-unimpaired older drivers into on-road Pass and Fail groups.
In Study 2 (Healthy Driver Follow-up study), 56 participants from the Healthy Older Drivers study were followed for 24 months using annual telephone interviews to assess driving behaviour, driving attitudes, medical conditions, and the occurrence of crashes and receipt of
traffic offences. Official data regarding crashes and traffic offences were also obtained. The aim was to determine whether either the on-road Pass/Fail classification or the off-road measures could predict subsequent crashes and offences. Failing the on-road assessment was not associated with higher crash or offence rates and there were only two baseline measures that predicted crashes or offences (i.e., distance driven at baseline testing and, paradoxically, a lower error score on a measure of visuomotor planning and coordination). However, drivers who reported more distress associated with their medical condition(s) were more likely to have had a crash or offence at 24 months. The outcomes of the Healthy Older Drivers and Healthy Driver Follow-up studies suggest that there is little value in off-road or on-road assessment of cognitively-unimpaired older drivers due to the weak relationship with future negative driving outcomes. However, distress associated with medical conditions may be a useful measure.
Study 3 (Dementia and…
Subjects/Keywords: older driver; dementia; Alzheimer's; mild cognitive impairment; prediction; off-road; on-road; ageing; aging; driving; neuropsychological; cognitive
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❌
APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Hoggarth, P. A. (2011). Prediction of Driving Ability in Healthy Older Adults and Adults with Alzheimer’s Dementia or Mild Cognitive Impairment. (Thesis). University of Canterbury. Retrieved from http://hdl.handle.net/10092/5384
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):
Hoggarth, Petra Ann. “Prediction of Driving Ability in Healthy Older Adults and Adults with Alzheimer’s Dementia or Mild Cognitive Impairment.” 2011. Thesis, University of Canterbury. Accessed December 11, 2019.
http://hdl.handle.net/10092/5384.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Hoggarth, Petra Ann. “Prediction of Driving Ability in Healthy Older Adults and Adults with Alzheimer’s Dementia or Mild Cognitive Impairment.” 2011. Web. 11 Dec 2019.
Vancouver:
Hoggarth PA. Prediction of Driving Ability in Healthy Older Adults and Adults with Alzheimer’s Dementia or Mild Cognitive Impairment. [Internet] [Thesis]. University of Canterbury; 2011. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/10092/5384.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Hoggarth PA. Prediction of Driving Ability in Healthy Older Adults and Adults with Alzheimer’s Dementia or Mild Cognitive Impairment. [Thesis]. University of Canterbury; 2011. Available from: http://hdl.handle.net/10092/5384
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Université de Montréal
29.
Morency, Patrick.
Potentiel d’une approche populationnelle orientée vers la reconfiguration des environnements urbains pour améliorer la sécurité des piétons
.
Degree: 2010, Université de Montréal
URL: http://hdl.handle.net/1866/4449
► INTRODUCTION : En milieu urbain, l’amélioration de la sécurité des piétons pose un défi de santé publique. Pour chaque décès attribuable aux collisions routières, il…
(more)
▼ INTRODUCTION : En milieu urbain, l’amélioration de la sécurité des piétons pose un défi de santé publique. Pour chaque décès attribuable aux collisions routières, il y a des centaines de personnes blessées et, dans les pays riches, la diminution du nombre annuel de piétons décédés s’expliquerait en partie par la diminution de la marche. Les stratégies préventives prédominantes n’interviennent pas sur le volume de circulation automobile, un facteur pourtant fondamental. De plus, les interventions environnementales pour améliorer la sécurité des infrastructures routières se limitent habituellement aux sites comptant le plus grand nombre de décès ou de blessés. Cette thèse vise à décrire la contribution des volumes de circulation automobile, des pratiques locales de marche et de la géométrie des routes au nombre et à la répartition des piétons blessés en milieu urbain, et d’ainsi établir le potentiel d’une approche populationnelle orientée vers la reconfiguration des environnements urbains pour améliorer la sécurité des piétons.
MÉTHODE : Le devis est de type descriptif et transversal. Les principales sources de données sont les registres des services ambulanciers d’Urgences-santé (blessés de la route), l’enquête Origine-Destination (volumes de circulation automobile), la Géobase du réseau routier montréalais (géométrie des routes) et le recensement canadien (pratiques locales de marche, position socioéconomique). Les analyses descriptives comprennent la localisation cartographique (coordonnées x,y) de l’ensemble des sites de collision. Des modèles de régression multi-niveaux nichent les intersections dans les secteurs de recensement et dans les arrondissements.
RÉSULTATS : Les analyses descriptives démontrent une grande dispersion des sites de collision au sein des quartiers. Les analyses multivariées démontrent les effets significatifs, indépendants du volume de circulation automobile, de la présence d’artère(s) et d’une quatrième branche aux intersections, ainsi que du volume de marche dans le secteur, sur le nombre de piétons blessés aux intersections. L’analyse multi-niveaux démontre une grande variation spatiale de l’effet du volume de circulation automobile. Les facteurs environnementaux expliquent une part substantielle de la variation spatiale du nombre de blessés et du gradient socioéconomique observé.
DISCUSSION : La grande dispersion des sites de collision confirme la pertinence d’une approche ne se limitant pas aux sites comptant le plus grand nombre de blessés. Les résultats suggèrent que des stratégies préventives basées sur des approches environnementales et populationnelle pourraient considérablement réduire le nombre de piétons blessés ainsi que les inégalités observées entre les quartiers.
Advisors/Committee Members: Gauvin, Lise (advisor).
Subjects/Keywords: Blessures;
Piétons;
Cyclistes;
Sécurité routière;
Collisions;
Véhicules à moteur;
Santé publique;
Inégalités sociales de santé;
Injuries;
Road safety;
Pedestrians;
Cyclists;
Collisions;
Motor vehicles;
Public health;
Social inequalities in health
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APA (6th Edition):
Morency, P. (2010). Potentiel d’une approche populationnelle orientée vers la reconfiguration des environnements urbains pour améliorer la sécurité des piétons
. (Thesis). Université de Montréal. Retrieved from http://hdl.handle.net/1866/4449
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):
Morency, Patrick. “Potentiel d’une approche populationnelle orientée vers la reconfiguration des environnements urbains pour améliorer la sécurité des piétons
.” 2010. Thesis, Université de Montréal. Accessed December 11, 2019.
http://hdl.handle.net/1866/4449.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Morency, Patrick. “Potentiel d’une approche populationnelle orientée vers la reconfiguration des environnements urbains pour améliorer la sécurité des piétons
.” 2010. Web. 11 Dec 2019.
Vancouver:
Morency P. Potentiel d’une approche populationnelle orientée vers la reconfiguration des environnements urbains pour améliorer la sécurité des piétons
. [Internet] [Thesis]. Université de Montréal; 2010. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/1866/4449.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Morency P. Potentiel d’une approche populationnelle orientée vers la reconfiguration des environnements urbains pour améliorer la sécurité des piétons
. [Thesis]. Université de Montréal; 2010. Available from: http://hdl.handle.net/1866/4449
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Brno University of Technology
30.
Ešpandrová, Bára.
Uhersky Ostroh průtah
.
Degree: 2019, Brno University of Technology
URL: http://hdl.handle.net/11012/137793
► Cílem diplomové práce je návrh řešení průtahu místní komunikací II/495 ve městě Uherský Ostroh. Práce se zabývá novým návrhem šířkového uspořádání komunikace, logickou návazností chodníků,…
(more)
▼ Cílem diplomové práce je návrh řešení průtahu místní komunikací II/495 ve městě Uherský Ostroh. Práce se zabývá novým návrhem šířkového uspořádání komunikace, logickou návazností chodníků, bezpečnějším propojením cyklotrasy, úpravou zálivu autobusové zastávky, řešení statické dopravy v okolí zimního stadionu, úpravou vjezdů k jednotlivým nemovitostem a přilehlou zeleň.; The aim of my diploma thesis is to design a local through
road in town Uherský Ostroh. The thesis focuses also on a new design of the width layout of the
road, consecutive of walkways, creation of a common track for pedestrians and cyclist, design of parking place intended for visitors of the local hockey arena, entrances to particular houses and urban vegetation.
Advisors/Committee Members: Smělý, Martin (advisor).
Subjects/Keywords: místní komunikace;
parkovací stání;
společný pás pro chodce a cyklisty;
autobusová zastávka;
chodníky pro chodce;
local road;
parking place;
common track for pedestrians and cyclists;
bus stop;
pavements
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ešpandrová, B. (2019). Uhersky Ostroh průtah
. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/137793
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):
Ešpandrová, Bára. “Uhersky Ostroh průtah
.” 2019. Thesis, Brno University of Technology. Accessed December 11, 2019.
http://hdl.handle.net/11012/137793.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ešpandrová, Bára. “Uhersky Ostroh průtah
.” 2019. Web. 11 Dec 2019.
Vancouver:
Ešpandrová B. Uhersky Ostroh průtah
. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2019 Dec 11].
Available from: http://hdl.handle.net/11012/137793.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ešpandrová B. Uhersky Ostroh průtah
. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/137793
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
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