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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
481

Modeling and source apportionment of primary and secondary PṂ₂ in the atmosphere

Doraiswamy, Prakash, January 2004 (has links) (PDF)
Thesis (Ph. D.)--University of Tennessee, Knoxville, 2004. / Title from title page screen (viewed Feb. 16, 2005). Thesis advisor: Wayne T. Davis. Document formatted into pages (xvi, 157 p. : col. ill., col. maps). Vita. Includes bibliographical references (p. 137-141).
482

Effects of artificial neural network speed-based inputs on heavy-duty vehicle emissions prediction

Hashemi, Nastaran. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains xii, 96 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 82-87).
483

An experimental and computational investigation of microwave regeneration of diesel particulate traps

Popuri, Sriram, January 1999 (has links)
Thesis (Ph. D.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains xxvi, 293 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 252-263).
484

Modeling and control of an automotive fuel cell thermal system /

Nolan, John. January 2009 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2009. / Typescript. Includes bibliographical references (p. 93-95).
485

The effect of driving conditions and ambient temperature on particulate matter emission rates and size distributions from light duty gasoline-electric hybrid vehicles /

Christenson, Martha, January 1900 (has links)
Thesis (M.App.Sc.) - Carleton University, 2007. / Includes bibliographical references (p. 156-163). Also available in electronic format on the Internet.
486

Catalytic control of individual hydrocarbons from a small utility gasoline engine /

Giavis, Konstantinos C., January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 53-56). Also available via the Internet.
487

Computational analysis and optimisation of the inlet system of a high-performance rally engine

Makgata, Katlego Webster. January 2005 (has links)
Thesis (M. Eng.)(Mechanical)--University of Pretoria, 2005. / Title from opening screen (viewed Mar. 20, 2006). Includes summary. Mode of access: World Wide Web.
488

Modeling and simulation of wall-flow diesel particulate filter during loading and regeneration

Guo, Zhenhua. January 1900 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2006. / Title from title screen (site viewed May 16, 2007). PDF text: xii, 111 p. : ill. (some col.) ; 1.59Mb. UMI publication number: AAT 3236910. Includes bibliographical references. Also available in microfilm and microfiche formats.
489

Evaluating the effectiveness of the vehicle registration and licensing system of Botswana's Ministry of Transport and Communication using the Delone and McLean model

Laletsang-Mokokwe, Lebogang 04 1900 (has links)
Thesis (MPhil)--Stellenbosch University, 2015. / ENGLISH ABSTRACT: Information System Success Evaluation has been a concept of interest to many organizations for decades now. The main motivation for this activity is usually from the financial view of things, that is, the main interest of an organization carrying out IS success evaluation is mainly to find out whether investing in such a system was a good business decision. This question is often answered by the realization of the direct and indirect benefits realized by deployment of using such a system. Like many organizations the government of Botswana has invested millions of Pula’s in the past number of years in acquiring and implementing different Information Systems in the various Ministries and Departments. One such system is the Vehicle Registration and Licensing System, which was deployed by the Department of Roads Transport and Safety of the Ministry of Works, Transport and Communication. After the VRLS implementation there has not been any formal scientific research or investigation conducted to find out the success of this Information System, especially with regards to the stakeholders who use this system for their daily jobs. This study therefore engaged in a task, which evaluated the success of the Vehicle Registration and Licensing System and answered the question of how effective the system is from the user’s point of view. A well-known Information System success evaluation model, known as the Delone and McLean IS evaluation model, was applied to test the hypothesis of this research. A structured questionnaire was used to collect the research data. The results were analyzed using a common research tool, the SPSS, including cross tabulation and chisquare tests. The findings of this study will further enrich the IS success evaluation Body of Knowledge on the key factors which can contribute to a successful or unsuccessful Information System acquisition investment. Furthermore, the researchers who will further look into this subject may find these findings very useful and also stimulating to do further research on this subject to unveil further evidence of the ingredients of an effective Information System investment which has been accepted by and accredited by its users. / AFRIKAANSE OPSOMMING: Inligtingstelselsuksesevaluering is ‘n konsep wat baie organisasies nou al vir dekades interesseer. Die motivering hiervoor is hoofsaaklik geleë in finansiële redes. Organisasies wil hiermee vasstel of dit ‘n goeie besigheidsbesluit was. Hierdie vraag word dan dikwels beantwoord deur die verkryging van direkte en indirekte voordele deur gebruik te maak van so ‘n stelsel. Soos baie organisasies het die regering van Botswana miljoene pula belê in die implementering van inligtingstelsels in verskeie staatsdepartemente. Die Voertuigregistrasie en Lisensiestelsel is ‘n voorbeeld hiervan wat deur die Departement van Padvervoer en -Veiligheid van die Ministerie van Werke, Vervoer en Kommunikasie ontplooi is. Geen formele wetenskaplike navorsing is geloods na afloop van die implementering van die stelsel nie, veral nie sedert die gebruik deur motoriste nie. Hierdie studie poog juis om die effektiwiteit van die stelsel te meet, veral vanuit die verbruiker se perspektief. Die Delone en Mclean Inligtingstelselevalueringsmodel word gebruik om die hipotese van die navorsing te toets. ‘n Gestruktureerde vraelys is opgestel om data te versamel. Die SPSS as ‘n algemene navorsingsinstrument is gebruik vir analise, asook vir kruistabulasie en chikwadraattoetse. Die bevindinge van die studie sal die korpus van kennis van inligtingstelselsuksesevaluering verryk ten opsigte van die sleutelfaktore wat kan bydra tot die sukses of nie-sukses van inligtingstelselimplementering. Verdere studie in hierdie betrokke gebied word deur die navorsing gestimuleer, om veral die effektiwiteit van Inligtingstelselbeleggings te bepaal.
490

Using biosensors to measure and regulate the negative affect of drivers in simulated environments

Barnard, Megan Patricia January 2017 (has links)
Recent statistics have suggested that a proportion of drivers are killed or seriously injured on UK roads due to feeling nervous, uncertain or panicked whilst driving. The literature into negative emotions has primarily focused on the relationship between anger and driving. Not including the literature on driving phobias and fears after a motor vehicle accident, the literature on the relationship between anxiety and driving is limited and inconclusive. The aim of the thesis was to investigate the effects of both state and trait anxiety on driving behaviours and autonomic reactions using studies with varying methodologies. Chapter 2 describes a questionnaire study, which found that whilst driving anxiety can have a substantial impact on anxiety related thoughts, behaviours and active avoidance, trait anxiety had slightly differential effects regarding social concerns, aggressive reactions and anxiety and avoidance of specific driving situations. Chapter 3 established, in a laboratory study, that whilst trait anxiety predicted various self-reported driving reactions, it did not affect levels of behavioural or autonomic reactions to driving video stimuli. Chapter 4 expands on these findings with a study that demonstrated reductions in high frequency heart rate variability, indicating a potential lack of emotional regulation within this context. The research was then taken into a simulated environment, where state and trait anxiety were investigated. The studies reported in Chapters 6 and 7 found limited impacts of threatening instructional sets on levels of state anxiety, but demonstrated that increases in state anxiety could lead to changes in behaviour and skin conductance levels. Finally, a simulator study reported in Chapter 8 demonstrated that whilst trait anxiety did not affect driving behaviours, it did affect levels of attentional control and processing efficiency. This leads into a discussion of the theoretical and practical implications of these findings. Particular focus is given to the benefits of interventions and exposure therapies, and it is argued that different types of intervention would be more beneficial depending on levels of state or trait anxiety.

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