Dissertations / Theses on the topic 'Transportation applications'
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Borsari, Claudio. "Microsimulation of transportation systems - theory and applications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3711/.
Full textRyu, Seungkyu. "Modeling Transportation Planning Applications via Path Flow Estimator." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4225.
Full textSarlas, Georgios. "Processing low-frequency floating cardata for transportation applications." Thesis, KTH, Trafik och logistik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127712.
Full textChoudhry, Omar Hussain Carleton University Dissertation Engineering Civil and Environmental. "Intelligent transportation system applications for urban courier movements." Ottawa, 1996.
Find full textDoyle, Timothy Patton. "Multicriteria multistakeholder decision analysis : applications to transportation planning." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104116.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 227-231).
Due to their magnitude and longevity, transportation investments can determine the long term success or failure of a transportation system. Thus, it is vital for decision-makers to have deep understanding of the alternatives available before they chose to invest. In this thesis, we examine the current state of the practice for transportation investment decisions. We draw upon the literature and this existing state of the practice to develop a new decision aid which we believe is an improvement over existing aids. We then apply this new decision aid to a transportation investment decision facing the East Japan Railway Company (JR East) and draw conclusions about the usefulness of our new tool. Our decision aid, the CLIOSjre Process, is designed to help decision-makers compare multiple alternatives and make an informed transportation investment decision. The process examines the decision from multiple perspectives where each of these perspectives represents one of the priorities of the decision-maker. By considering each priority separately, the CLIOSjre Process provides a detailed understanding of each alternative. The CLIOSjre Process also combines these individual evaluations into a single overall evaluation of each alternative. This overall evaluation provides the decision-maker with an actionable ranking of the alternatives. In combination, these perspective-specific and overall evaluations of each alternative provide a detailed and holistic understanding of the decision facing the decision-maker. Unlike many other decision aids, the CLIOSjre Process accounts for both the multistakeholder nature of transportation investments and the uncertainty inherent to these decisions. The multifaceted nature of the CLIOSjre Process examines each alternative from multiple perspectives. This approach better facilitates negotiation between stakeholders. In addition, the CLIOSjre Process formally identifies and addresses uncertainty in the analysis - the primary source of risk in transportation investment decisions. Thus, the CLIOSjre Process is a unique multicriteria, multistakeholder decision aid which addresses uncertainty. We hope that this thesis provides the reader with a better understanding of the application, challenges, and opportunities of multicriteria multistakeholder decision aids.
by Timothy Patton Doyle.
S.M. in Transportation
Yenco, Aileen C. "Decision Tree for Ground Improvement in Transportation Applications." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384435786.
Full textJavadi, Mohammad Saleh. "Computer Vision Algorithms for Intelligent Transportation Systems Applications." Licentiate thesis, Blekinge Tekniska Högskola, Institutionen för matematik och naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-17166.
Full textFrackelton, Alexandra. "Pedestrian transportation project prioritization incorporating app-collected sidewalk data." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50334.
Full textGao, Jason Hao. "Distributed mobile platforms and applications for intelligent transportation systems." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79327.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (p. 70-75).
Smartphones are pervasive, and possess powerful processors, multi-faceted sensing, and multiple radios. However, networked mobile apps still typically use a client-server programming model, sending all shared data queries and uploads through the cellular network, incurring bandwidth consumption and unpredictable latencies. Leveraging the local compute power and device-to-device communications of modern smartphones can mitigate demand on cellular networks and improve response times. This thesis presents two systems towards this vision. First, we present DIPLOMA, which aids developers in achieving this vision by providing a programming layer to easily program a collection of smartphones connected over adhoc wireless. It presents a familiar shared data model to developers, while underneath, it implements a distributed shared memory system that provides coherent relaxed-consistency access to data across different smartphones and addresses the issues that device mobility and unreliable networking pose against consistency and coherence. We evaluated our prototype on 10 Android phones on both 3G (HSPA) and 4G (LTE) networks with a representative location-based photo-sharing service and a synthetic benchmark. We also simulated large scale scenarios up to 160 nodes on the ns-2 network simulator. Compared to a client-server baseline, our system shows response time improvements of 10x over 3G and 2x over 4G. We also observe cellular bandwidth reductions of 96%, comparable energy consumption, and a 95.3% request completion rate with coherent caching. With RoadRunner, we apply our vision to Intelligent Transportation Systems (ITS). RoadRunner implements vehicular congestion control as an in-vehicle smartphone app that judiciously harnesses onboard sensing, local computation, and short-range communications, enabling large-scale traffic congestion control without the need for physical infrastructure, at higher penetration across road networks, and at finer granularity. RoadRunner enforces a quota on the number of cars on a road by requiring vehicles to possess a token for entry. Tokens are circulated and reused among multiple vehicles as they move between regions. We implemented RoadRunner as an Android application, deployed it on 10 vehicles using 4G (LTE), 802.11p DSRC and 802.11n adhoc WiFi, and measured cellular access reductions up to 84%, response time improvements up to 80%, and effectiveness of the system in enforcing congestion control policies. We also simulated large-scale scenarios using actual traffic loop-detector counts from Singapore.
by Jason Hao Gao.
S.M.
Kim, Daeki. "Large scale transportation service network design : models, algorithms and applications." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10366.
Full textMiralinaghi, Seyedmohammad. "Multi-Period Tradable Credit Schemes for Transportation and Environmental Applications." Thesis, Purdue University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10690018.
Full textGreenhouse gas (GHG) emissions, known as a major cause of climate change, have been emitted by the combustion of fossil fuels over the past few decades. The transportation sector contributes significantly to global GHG emissions. Inspired by the successful implementation of tradable credit schemes (TCSs) in pollution control programs, this dissertation focuses on multi-period TCSs to minimize vehicular emissions. In this scheme, a central authority (CA) allocates travel credits to travelers (credit allocation scheme) and then, charges them to travel on each link (credit charging scheme). Travelers are able to trade credits amongst themselves in the market.
To address the long-term planning goals of the CA, the dissertation proposes the concept of a multi-period TCS framework. This framework enables the CA to achieve steady progress toward system-level goals, i.e., reducing traffic congestion and GHG emissions, over the long-term planning horizon. First, a TCS-based multi-period equilibrium modeling framework is developed to address the planning problem of a CA that seeks to achieve system-level goals by varying the credit supply and the link usage credit charging schemes across the various periods of the planning horizon. Further, the CA seeks stable credit prices across these periods to provide them as information to travelers in an operational context. Based on this information, bank interest rate and their travel needs, travelers determine their actions in terms of the consumption or sale of credits in the current period or the transfer of credits to future periods. It is proved that the credit price volatility is dampened by the ability to transfer credits. Since a TCS is subject to market manipulation and the artificial control of credit price, a transfer fee, which is shown to be an effective instrument to control hoarding among travelers, is proposed.
Using the proposed multi-period TCS framework, the dissertation develops different system optimal (SO) TCS designs, as bi-level models, to derive credit allocation and charging schemes to achieve system-level goals. In the first SO multi- period TCS design, the CA minimizes the vehicular emissions in the upper level over the long-term planning horizon. This enables the CA to plan the trajectory of vehicular emissions during the planning horizon. This trajectory can be used to predetermine the emissions standard for each period to use in the second SO multi-period TCS design, which aims to minimize total system travel time, in the upper level, over the planning horizon. These designs include bounds on increases in travel costs, allowing travelers to better adapt to the TCS implementation. The lower-level models are the equilibrium conditions in which travelers minimize their costs under the obtained multi-period TCS in the upper level.
To enhance realism in capturing the equilibrium conditions under the multi-period TCS, this dissertation factors different travelers’ characteristics and bank interest rates. In making route choices, travelers factor value of time (VOT) and tradeoff credit consumption and travel costs. Hence, travelers’ heterogeneity in terms of VOT is factored. It is shown that if the CA does not factor VOT in SO TCS design, it leads to a socially inequitable policy in practice. Further, the heterogeneity of travelers in terms of perceived future credit prices is factored. Travelers decide to consume or transfer credits in each period based on several factors, including future credit prices. However, due to the uncertainty in traffic network demand/supply forecasts over the long-term horizon, the CA cannot provide an accurate forecast of future credit prices a priori. It is shown that as the difference between travelers’ perceptions of future CPs and the actual CPs set by the CA for each period increases, the effectiveness of the SO TCS design in minimizing total system travel time decreases; this has implications for traffic congestion management.
Fourth, the dissertation investigates the robust design of multi-period TCS to account for travel demand uncertainty and achieve system-level goals. To minimize vehicular emissions, the CA leverages the TCS to promote zero-emissions vehicles (ZEVs), which circumvents the need for current subsidy-based incentive policies. The incentive to shift to ZEVs is fostered by allocating more credits and charging fewer credits to ZEV travelers compared to other travelers. To factor the uncertainty in travel demand forecasts, this research proposes a robust multi-period TCS design that minimizes the worst-case vehicular emissions, i.e. maximum vehicular emissions, under different traffic network demand scenarios. It is shown that the robust TCS design increases reliability in achieving system-level goals, compared to the SO TCS design that does not factor travel demand uncertainty.
Finally, the dissertation analyzes the ability of a TCS to manage morning commute congestion while factoring the market loss aversion of commuters. (Abstract shortened by ProQuest.)
Singleton, Patrick Allen. "A Theory of Travel Decision-Making with Applications for Modeling Active Travel Demand." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1494.
Full textHan, Kai. "Development of an interoperable Geographic Information System platform for transportation applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62747.pdf.
Full textMacNicholas, Michael J. "Systems analysis and modelling applications for some important transportation engineering problems." Thesis, University of Ulster, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.400839.
Full textLiu, Chen. "Real-time simulation of power electronic system for electrical transportation applications." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCA019.
Full textThe development of power electronic system in electrical transportation is being pursued in the form of high-efficiency power converters involving complex topology. Although analysis and control of such system is often a difficult task due to the high-voltage and high-current environment, the hardware-in-the-loop simulation (HILs) offers a time-saving and safe way to evaluate the control strategy by simulating the external environment of a controller in the embedded system.During the process, there are two requirements that we have to meet in the context of racing against real-time: (i) the computation process is necessary to the end before the next trigger impulse from the real-time clock arrives (ii) the latency in the simulator is small enough to ignore. The sampling and simulation period in today’s CPU-based HIL simulators can barely go under 1 us, it is hard to take into accounts the entire switch event from PWM (Pulse Width Modulation) in modern power drive systems. In contrast, Field Programmable Gate Arrays (FPGAs) provide not only an ultra-fast sampling speed but also a viable alternative for speeding up the real-time simulator. However, the implementing the complex power electronic system on FPGAs is one of the limitations in real time simulation. Thus, in this these, we will research the FPGA-based real-time simulation with the attempt to solve the following questions,1.How could we partition power electronic system and implement it in FPGA?2.How do we leverage FPGA features to accelerate circuit?3.How could we optimize the performance of FPGA?4.How do we express the nonlinear switch characteristic of power electronic system in the FPGA?The first question is about the hybrid characteristic inside the power electronic system. In the paper, we proposed a novel nodal method and a matrix solver based on Cholesky Decomposition trying to keep the circuit topology fixed and treat each switch and circuit element independently. The second question is one that how to obtain approximations for all kind of ordinary differential equations (ODEs). We utilized a series of parallel ODE solver to accelerate the solving process and deal with the stiff problem. The third question is to use high-level synthesis (HIL) tools to optimize the performance of FPGA. Such tools are employed for developing high-performance computing units, designated hereafter as hardware solvers (HS), for real-time simulation applications. At last, in order to research the impact of nonlinear switch characteristic on the power electronic system, we proposed an ultra-fast IGBT model with a calculation time in nanoseconds in the FPGA.Overall, the presented methods contribute to the development of FPGA-based real-time simulator in three ways: reducing the calculation time of matrix solving process, proposing parallel ODE solver in the FPGA and optimizing the performance of FPGA. Thus, with the FPGA solver we built, the model of power electronic system for electrical transportation can be solved within 50 nanoseconds in high accuracy
Wang, Ruxi. "High Power Density and High Temperature Converter Design for Transportation Applications." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/28264.
Full textPh. D.
Park, Jaeyong. "Safe Controller Design for Intelligent Transportation System Applications using Reachability Analysis." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366201401.
Full textRoe, Matthew Stephen. "Development of a hardware-in-the-loop analysis framework for advanced ITS applications." Thesis, Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28260.
Full textAdanu, Emmanuel Kofi. "Exploratory Applications of Epidemiological Methods in Transport Safety and Mobility." Thesis, The University of Alabama, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10603643.
Full textEvident similarities and links between the outcomes of traffic crashes and stranded (or constrained) mobility have been identified and are reported in this research. Generally, a high level of travel activities is an indicator of high crash exposure. However, studies have shown that the highest rates of traffic fatalities occur in low- and middle-income regions, where many citizens experience relatively low levels of motorized travel. This ironic observation reveals serious challenges facing transport mobility systems in the less privileged regions of the world. Studies on traffic crashes and mobility constraints also reveal that they both have individual and regional variations in their occurrence, effects, and severities. Consequently, the outcomes of traffic crashes and constrained mobility are serious public health concerns worldwide.
As public health problems, their study is analogous to the study of diseases and other injuries and thus, suitable for the application of epidemiological techniques. This dissertation therefore explores the use of epidemiological techniques to analyze traffic crashes and mobility/accessibility constraints from a human-centered perspective. The dissertation therefore consists of two major focus areas. The first part of the study applies widely used epidemiology/public health – based statistical tools to analyze traffic crashes with the aim of gaining better understanding of the human-centered causes and factors that influence these causes, and how these ultimately affect the severity of crashes. This part is further divided into two sub-sections. The first sub-section used latent class analysis to identify homogeneous clusters of human-centered crash causal factors and then applied latent class logit and random parameters logit modeling techniques to investigate the effects of these factors on crash outcomes. The second sub-section of the first part of the dissertation applies multilevel regression analysis to understand the effects of driver residential factors on driver behaviors in an attempt to explain the area-based differences in the severity of road crashes across sub-regions. Both studies are necessary to develop potential human-centered mitigations and interventions and for the effective and targeted implementation of those countermeasures. The second part of the study provides an epidemiological framework for addressing mobility/accessibility constraints with a view to diagnosing symptoms, recommending treatment, and even discussing the idea of transmission of constrained mobility among city dwellers. The medical condition, hypomobility, has been used to connote constrained mobility and accessibility for people in urban areas. In transportation and urban studies, hypomobility can result in a diminished ability to engage in economic opportunities and social activities, hence deepening poverty and social exclusion and increasing transport costs, among other negative outcomes. The condition is especially pronounced in poor urban areas in developing countries. The framework proposed in this study is expected to help identify and address barriers to mobility and accessibility in the rapidly growing cities throughout the developing world, with particular applicability to the rapidly developing cities in Sub-Saharan Africa.
Ultimately, this dissertation explores the application of epidemiological techniques to two major transportation problems: traffic safety and constrained mobility. The techniques presented in this dissertation provide policy makers, agencies, and transport professionals with tools for evidence-based policies and effective implementation of appropriate countermeasures.
Gopalakrishnan, Subramanian. "Prediction of short-term traffic volume for applications in intelligent transportation systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ54710.pdf.
Full textKanaan, Ziad Y. "A review of automatic vehicle location technologies and applications to commercial transportation." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36617.
Full textChowdhury, Samir Rafsan. "A Three-Phase Overlapping Winding Based Wireless Charging System for Transportation Applications." University of Akron / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=akron1619692324063471.
Full textTANG, LI. "Automatic Extraction of Number of Lanes from Aerial Images for Transportation Applications." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2200.
Full textLiu, Yiting. "Applications of wireless communication in traffic networks using a hierarchical hybrid system model." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1173283543.
Full textJiang, Yu, and 姜宇. "Reliability-based transit assignment : formulations, solution methods, and network design applications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/207991.
Full textBicici, Serkan. "Incorporating Uncertainty with Transportation Point Forecasts: Applications to Roadway Network and Transit Passenger Origin-Destination Flow Models." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1546567129433079.
Full textKrishnan, Niranjan 1973. "Design of large scale transportation service networks with consolidation : models, algorithms and applications." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47567.
Full textIncludes bibliographical references (leaves 94-103).
by Niranjan Krishnan.
S.M.
Yasarer, Hakan I. "Characterizing the permeability of concrete mixes used in transportation applications: a neuronet approach." Thesis, Kansas State University, 2010. http://hdl.handle.net/2097/4314.
Full textDepartment of Civil Engineering
Yacoub M. Najjar
Reliable and economical design of Portland Cement Concrete (PCC) pavement structural systems relies on various factors, among which is the proper characterization of the expected permeability response of the concrete mixes. Permeability is a highly important factor which strongly relates the durability of concrete structures and pavement systems to changing environmental conditions. One of the most common environmental attacks which cause the deterioration of concrete structures is the corrosion of reinforcing steel due to chloride penetration. On an annual basis, corrosion-related structural repairs typically cost millions of dollars. This durability problem has gotten widespread interest in recent years due to its incidence rate and the associated high repair costs. For this reason, material characterization is one of the best methods to reduce repair costs. To properly characterize the permeability response of PCC pavement structure, the Kansas Department of Transportation (KDOT) generally runs the Rapid Chloride Permeability test to determine the resistance of concrete to penetration of chloride ions as well as the Boil test to determine the percent voids in hardened concrete. Rapid Chloride test typically measures the number of coulombs passing through a concrete sample over a period of six hours at a concrete age of 7, 28, and 56 days. Boil Test measures the volume of permeable pore space of the concrete sample over a period of five hours at a concrete age of 7, 28, and 56 days. In this research, backpropagation Artificial Neural Network (ANN)-based and Regression-based permeability response prediction models for Rapid Chloride and Boil tests are developed by using the databases provided by KDOT in order to reduce or eliminate the duration of the testing period. Moreover, another set of ANN- and Regression-based permeability prediction models, based on mix-design parameters, are developed using datasets obtained from the literature. The backpropagation ANN learning technique proved to be an efficient methodology to produce a relatively accurate permeability response prediction models. Comparison of the prediction accuracy of the developed ANN models and regression models proved that ANN models have outperformed their counterpart regression-based models. Overall, it can be inferred that the developed ANN-Based permeability prediction models are effective and applicable in characterizing the permeability response of concrete mixes used in transportation applications.
Schafer, Sarah E. "Technology Systems and Practices in Transportation and Logistics:Exploring the Links Toward Competitive Advantage in Supply Chains." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1438864471.
Full textFredriksson, Henrik. "On the use of traffic flows for improved transportation systems : Mathematical modeling and applications." Licentiate thesis, Blekinge Tekniska Högskola, Institutionen för matematik och naturvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-22111.
Full textZhang, Chengliang. "Robust optimization with applications in maritime inventory routing." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54863.
Full textSchafer, Guy M. "Identifying Bio-Diesel Production Facility Locations for Home Heating Fuel Applications Within the Midwest Region of the United States." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302263583.
Full textDonoughe, Kelly. "Applications of Connected Vehicle Technology to Address Issues of School Bus and School Bus Stop Safety." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/78732.
Full textPh. D.
Vanajakshi, Lelitha Devi. "Estimation and prediction of travel time from loop detector data for intelligent transportation systems applications." Texas A&M University, 2004. http://hdl.handle.net/1969.1/2667.
Full textYadappanavar, Vinay M. (Vinay Muralidhara) 1976. "Time-dependent networks : data representation techniques and shortest path algorithms with applications to transportation problems." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/8813.
Full textIncludes bibliographical references (leaves 139-141).
In this thesis, we develop methods for the following problems: the representation of discrete-time dynamic data, and the computation of fastest paths in continuous-time dynamic networks. We apply these methods for the following application problems: storage and communication of discrete-time dynamic transportation network data, and computation of fastest paths in traffic networks with signalized intersections. These problems are at the heart of realtime management of transportation networks equipped with information technologies. We propose a representation (called the bit-stream representation) method for nondecreasing discrete-time dynamic functions as a stream of 0 and 1 bits. We show that this representation is 12 times less memory consuming than the classical representation for such data, where the function value at each time-instant is stored as an L-bit integer. We exploit this representation to efficiently store and represent travel-time data in discrete-time dynamic transportation networks. Since the bit-stream representation requires lesser memory space, it also leads to lesser communication-time requirements for applications involving communication of such data. We adapt a classical dynamic one-to-all fastest path to work on bit-streams and show that this leads to savings of up to 16-times in over-all communication and computation times. This holds the potential to impact the development of efficient high performance computer implementations of dynamic shortest path algorithms in time-dependent networks. We model travel-times in dynamic networks using piece-wise linear functions. We consider the one-to-all fastest path problem in a class of continuous-time dynamic networks. We present two algorithms: Algorithm OR, that is based on a conceptual algorithm known in the literature; and Algorithm IOT-C, that is developed in this thesis. We implement the two algorithms, and show that Algorithm IOT-C outperforms Algorithm OR by a factor of two. We study the application problem of computing fastest paths in traffic networks with signalized intersections. We use a piece-wise linear link travel-time dynamic network model to address this problem, and demonstrate that this model is more accurate than discrete-time models proposed in the literature. Some of the implemented algorithms are applied to solve variants of the one-to-all fastest path problem in traffic networks with signalized intersections, and study the computational performance of these implementations.
by Vinay M. Yadappanavar.
S.M.
Virji, Maheboob B. V. "Modelling and optimisation of Solid Polymer Fuel Cell (SPFC) systems for transportation and stationary applications." Thesis, Loughborough University, 2002. https://dspace.lboro.ac.uk/2134/34632.
Full textSmith, Jonathan Cole. "Tight Discrete Formulations to Enhance Solvability with Applications to Production, Telecommunications, and Air Transportation Problems." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/26710.
Full textPh. D.
Nguyen-Minh, Huong. "Contribution to the Intelligent Transportation System : security of Safety Applications in Vehicle Ad hoc Networks." Thesis, Avignon, 2016. http://www.theses.fr/2016AVIG0212/document.
Full textThe development of transportation all over the world has been providing a lot of benefits for many aspects of human life. Intelligent Transportation Systems (ITS) are advanced applications that aim to make the transport networks safer, more convenient and smarter. According to their usages, they can be classified into two types of ITS applications, which are safety applications and non-safety applications. Vehicular ad hoc network (VANET) is a key component of ITS since it enables communications among transportation units. These communications support different ITS applications with various properties. Between two types of applications, we are interested in safety applications which have tighter quality and security constraints. Depending on an applied scenario of a given safety application, the exchanged information among vehicles must be broadcast locally within one-hop communication and/or also be notified to vehicles in large range. The main objective of this thesis is to improve the performance of safety applications in term of the quality of service and security, in both one-hop communication and multi-hop communication. We focus on reliability, connectivity and Denial of Services (DoS) attack. We study and propose technical solutions coming from lower layers (Physical, MAC and network layers) which play a fundamental role in mitigation to challenges created by the nature of the vehicular environment. Firstly, we introduce a reliable scheme to achieve the reliability for broadcasting. In our scheme, the safety messages are rebroadcast when the sender is solicited. This increases the percentage of vehicles receiving the messages while duplicated messages are limited. Secondly, with consideration of the fragmentation of the network, we study solutions that overcome the temporary disconnection in the network to bring the safety information to the recipients. Based on the social properties of vehicular networks, we propose a social-based forwarding protocol to support the communication between vehicles to points of interest that provide safety services with looser time constraints, such as search and rescue. Thirdly, we investigate jamming attack, a kind of DoS attacks, which is crucial for safety applications because of the adequate condition of the attack at the lower layers. We model jamming attack on broadcasting in order to study the degradation caused by the attack on network performance. The degradation at a certain level in network performance is an indication of a jamming attack presence in the network; therefore results from this analysis will allow us to determine network performance thresholds to distinguish between normal and attacked scenarios. However, according to our analysis, the method using the degradation as an indication to detect a jamming attack is not feasible for real-time applications. Hence, we propose methods to detect jamming attacks in real-time. Our methods allow real-time detection with high accuracy, not only at the central monitor but also at each vehicle. Therefore, vehicles are noticed about the attack soon enough to recover the communication and react to these attacks
Luk, Yiu-wah Everett, and 陸耀華. "Potential applications of intelligent transport systems in urban freight transport." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B29851397.
Full textKirschbaum, Andrew R. "The design and implementation of the Military Applications of Shiptracks experiment on Space Transportation System - 65." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA288488.
Full textThesis advisor(s): Philip A. Durkee. "September 1994." Bibliography: p. 52-53. Also available online.
Wong, Jimmy Tsz Kwan 1975. "The use of APTS to improve intermodal passenger transportation, with applications to ground access to airports." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47424.
Full textZiegler, Ute [Verfasser]. "Mathematical modelling, simulation and optimisation of dynamic transportation networks with applications in production and traffic / Ute Ziegler." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2013. http://d-nb.info/1033023841/34.
Full textDrozhzhin, Danil [Verfasser], Gerd [Akademischer Betreuer] Griepentrog, and Stephan [Akademischer Betreuer] Frei. "Consideration of Electromagnetic Noise During Design of Inverter for Transportation Applications / Danil Drozhzhin ; Gerd Griepentrog, Stephan Frei." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2020. http://d-nb.info/1215838808/34.
Full textThomas, Mathew. "Hydrogen applications for Lambert - St. Louis International Airport." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Thomas_Mathew_09007dcc805eac40.pdf.
Full textVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed January 22, 2009) Includes bibliographical references (p. 53-55).
Liu, Liang. "Probabilistic Assessment and Optimal Life-Cycle Management Considering Climate Change and Cost-Benefit Analysis: Applications to Bridge Networks and Ships." Thesis, Lehigh University, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=28156457.
Full textGuobaitis, Vincent Michael. "An analysis of state efforts on adaptation to climate change in the transportation sector with applications to Georgia." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42905.
Full textLu, Qifeng. "Bivariate Best First Searches to Process Category Based Queries in a Graph for Trip Planning Applications in Transportation." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/26444.
Full textPh. D.
Bathula, Manohar. "A Sensor Network System for Monitoring Short-Term Construction Work Zones." Cleveland State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1231357323.
Full textWong, Chi-tak Keith, and 黃志德. "Applications of vehicle location and communication technology in fleetmanagement systems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31945612.
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