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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.
141

An Embedded Multi-Resolution AXI Bus Tracer for SOC Development

Chiang, Cheng-lung 21 July 2010 (has links)
Debugging in the System-on-a-Chip (SoC) environment is a challenge since it was hard to observe their signals on a chip. How to obtain the chip internal signals to help chip designers effective to verify and debug has become an important issue.It is impractical to observe their signals on output pins due to pin number limitation. The conventional solution is to embed a monitor within the hardware for capturing the signals in real time and storing them in a on-chip trace memory. This thesis shows how the embedded multi-resolution AXI Bus Tracer can enable users to achieve the SoC debugging and performance evaluation efficiently, and it can trace the AXI Signals on the AMBA 3.0 AXI environment. Users can dynamically adjust the tracking resolution during the program execution, and we also provide an effective encoding algorithm for compressing the trace data. With our trace analysis software, we provide the detail information ranging from detail signal waveforms to transaction level waveforms, and transfer the trace signals into Value Change Dump (VCD) file. We also show several pie charts to analyze the portion of transfer types. In our work, we provide a synthesizable hardware to embed SOC for capturing signals. Then traced information through decompress and analysis can make users analyze system debugging and performance evaluation.
142

SoC Integration and Verification of a 3D Graphics SoC

Huang, Tzu-Ming 26 July 2011 (has links)
While consumer demand for electronic equipment and more mature systems integration capabilities, it makes the system complexity of chip design increasing significantly. Also accompany an issue is how to efficiently and accurately verify that such a large-scale chip. In this thesis, we make 3D graphics SoC as a case study, investigate the various aspect, i.e. architecture design, system integration, verification methods and verification platform. This thesis proposes a verification methodology with unified test pattern from system modeling level to test chip level, and via increase of the abstraction level of test patterns, that avoided the way through the manual to generate the test patterns. Not only eliminate manual editing effort and reduce the possibility of error, but also allows developers to more focus on algorithm design and functional verification. In addition, through the pre-described of test scenario (Test-bench) which automated verification and comparison methodology. The efficiency of regression test will be increased. And it's much easier to meet the constraint of time to market. However, In order to demonstrate our chip on new prototyping based board. We not only modified the channel of 3DG chip, but also develop a high-performance bus bridge to keep the efficient of exchange data between two system buses which in platform board and our SoC. And shorten the longest path of the overall system so that system clock rate could be enhanced from 82.6MHz to 120.4 MHz system clock rate.
143

Integration of an Ethernet MAC on System-on-a-Programmable- Chip

Lin, Guang-bao 15 September 2006 (has links)
This research aims to discuss the integration of an 10/100 Ethernet MAC on a System-on-a-Programmble-Chip. SOPC is a chip combined with ¡§ASIC¡¨(Application Specific IC) and ¡§PLD¡¨(Programmable Logic Device). Due to the lower Complexity, SOPC is suitable for SOC study in academic. In this research, Altera ARM-based ExcaliburTM SOPC is used and an Opencore 10/100 Ethernet MAC is integrated onto it. The topic of SOPC architecture, SOPC development flow, bus interface design of the hardware, driver development and verification strategy of SOPC are discussed. This work is hopeful to be referable material for school SOPC teaching.
144

String Superprimitivity test and LCS on the Reconfigurable Bus Model

Chang, Jenn-Dar 24 July 2000 (has links)
Problems of some regularities in strings, such as repetition, period, seed, square, etc., have been studied extensively recently. Many algorithms have been proposed to solve these problems in O(1) time complexity on an n imes n reconfigurable bus model, where $n$ is the length of the given string. In this paper, we concentrate to solve problems of another form of regularity, the string superprimitivity test problem and the LCS (longest common subsequence) problem in strings on the reconfigurable bus model. And we propose a O(log n) time parallel algorithm to solve the string superprimitivity test problem. We also review some algorithms for the LCS problem. Further research is also given in this paper.
145

A Quantitative Study on Service Quality and Passenger Satisfaction of Transportation-A Case Study of Kaohsiung Transportation Co., Ltd

cheng, Kuo-chin 04 September 2007 (has links)
Over the year, Kaohsiung Bus Companies has not been very successful in providing the kind of service the passengers need, as a result, today, more people are not using bus transportation, nor satisfied with the bus company¡¦s service quality. How to enhance quality services to meet customers¡¦ needs; how to reach the goal to improve metropolitan¡¦s commute environment and how to re-create business opportunity and make profit are the main concerns of Kaohsiung Bus Companies. Versus bus companies, customers are expecting metro transportation system to provide economical, rapid, secure and safe services while paying the fare. This research is based on customer¡¦s expectation (demands) and bus company¡¦s service (supplies) to build up the model. This model also explains the co-relationship of customer satisfaction degree and bus company quality service. To provide the evidence of presumption, this research goes through public opinion survey. This research has the following results 1). The co-relationship is low between (a) image of Kaohsiung Bus Company, and passenger expectation of quality service ; and (b) passengers¡¦ past experiences, knowledge of bus company and personal needs. 2). The co-relationship between (a) customer¡¦s over all comments; and (b) riding frequency is relative. 3). Bus service schedule (service time) does affect the sensation of passenger. 4). The satisfaction degree of customer from high to low of bus service schedule is as (a) off-peak, (b) afternoon peak, (c) morning peak. 5). For over all satisfaction degree of bus service, non-commuters are higher than commuters. 6). The better the quality service, the higher the sensation of satisfaction degree.
146

Bus stops and crime do bus stops increase crime opportunities in local neighborhoods? /

Yu, Sung-suk Violet, January 2009 (has links)
Thesis (Ph. D.)--Rutgers University, 2009. / "Graduate Program in Criminal Justice." Includes bibliographical references (p. 186-194).
147

Regulatory regimes for public transport services in Hong Kong /

Su, Yau-on, Albert. January 2001 (has links)
Thesis (M.A.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 108-110).
148

Impact of bus franchise mode change in Macao on local residents' transportation mode choice

Lam, Tin-hon., 林天瀚. January 2012 (has links)
The new bus operation mode has been implemented in Macao from 1st August, 2011 onwards. In the new operation mode, Government becomes the operator of all bus routes while bus companies have switched their roles to service providers. The major objective of this new bus operation mode is to enhance bus ridership and minimize the uses of private vehicles. This objective has come to the main aim of this dissertation, which is to investigate whether the new bus operation mode has achieved the Government’s targets by analyzing the impacts on residents’ transportation mode choices after the change of bus operation mode. This study is essential to the Government because it can be a milestone for the Transport Bureau to evaluate the effectiveness of the new bus operation mode so as to arrange the public transportation system to fulfill the needs of the residents. If public transportation is considered as safe, convenient and efficient, local citizens will be more willing to ride on public transportation instead of private vehicles. Questionnaire survey and interview had been applied in this study. There were four main findings from the questionnaire. Firstly, the most influential factors affecting Macao residents to make mode choices are time and distance. Secondly, residents are less satisfied with the new bus operation mode compared to the old bus operation mode in terms of the satisfaction scores ranked by the respondents while significant differences in satisfaction scores towards different bus operators are recorded. Thirdly, the new bus operation mode is not effective for the time being from the perspective of the respondents. Fourthly, nearly none commuters driving their own cars or motorcycles to commute before the new bus operation mode are willing to change to buses after the commencement of the new bus operation mode. In other words, it can be concluded that the new bus operation mode does not increase ridership on buses, especially for commuters who drive their own vehicles to commute. The main reasons for the currently ineffectiveness of new bus operation mode are the high expectations for the new bus operation mode and the negative impacts caused by the increase of bus frequency. In order to change the public belief that the bus services are still not reliable and effective, the Transport Bureau in Macao has to apply measures to rebuild the confidence of bus passengers on bus services and to reduce the travel time on bus journeys. Once these suggested measures are implemented, passengers will be more willing to ride on buses and the targets of the new bus operation mode can be achieved. / published_or_final_version / Urban Planning and Design / Master / Master of Science in Urban Planning
149

An appraisal of community engagement in the planning of franchised bus services in Hong Kong

Wong, Chiu, 黃超 January 2012 (has links)
It has been noticed that the government and bus operators in Hong Kong has constantly failed to implement plans to reduce, cancel or re-organize franchised bus routes with low patronage, essentially due to objections from District Councils, no matter how beneficial to the environment and traffic conditions these plans are claimed to be. In view of such phenomenon, this study set off to investigate what really has taken place at the core of the problem, i.e. the consultation process of Route Development Plan (RDP) with District Councils. The theories of community engagement (CE), deemed necessary in all areas of public policy making, have been borrowed to conceptualize such process in this study in terms of adequacy and sufficiency. The objectives of this study are: to review the current CE practice for bus route planning; to investigate the views of the stakeholders, such as the government, bus operators, district councilors and passengers towards such practice; and to suggest improvement to it, if possible. This study has employed both qualitative as well as quantitative methods, i.e. questionnaire surveys for the passengers (114 surveyed) and district councilors (11 replied out of 71 questionnaires sent out); and in-depth interviews for Transport Department (TD) officials, bus operator representatives (from Citybus/ New World First Bus) and district councilors (totally four). Some key findings from the questionnaire surveys include: more than half of the passengers (54%) do not know of the proposed changes to the bus routes they are using; only 1% and 12% of them have expressed their views to the government and district councilors respectively concerning the proposed route change, and none to the bus operators; as for district councilors’ questionnaire survey, most of them (8 out of 11) stated that they have been continually communicating with the government; but still, most of them (8 out of 11) believed that the RDP items would be implemented even without reaching consensus. On the other hand, from the in-depth interviews, some details of the CE process for RDP not previously published are revealed, including; an annual cycle of RDP preparation and consultation; the interaction between TD, bus operators and district councilors, among bus operators, and among district councilors; the various bargaining tactics employed between the stakeholders during the process. Though TD officials see no room of improvements to the existing practice, bus operator representative request for more objective decision-making; whereas district councilors demand for more information to be shared and more communications to be held with TD and the bus operators. In conclusion, the existing CE practice for bus route planning has not been well received by most of its stakeholders. It should be given a higher recognition for its role in a comprehensive bus route planning that not only needs to balance the conflicting claims of community, but also between transport and other social benefits. / published_or_final_version / Transport Policy and Planning / Master / Master of Arts in Transport Policy and Planning
150

New Monitoring Paradigms for Modern Avionics Buses

Buckley, Dave 10 1900 (has links)
ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV / In modern aircraft there is a proliferation of avionics buses. Some of these buses use industry wide standards such as ARINC 429 or AFDX while others are based on proprietary protocols. For many of the newer bus types there can be thousands of parameters on each bus. In a distributed data acquisition system the flight test engineer needs to record all of the data from each bus and monitor selected parameters in real time. There are numerous different approaches to acquiring, transmitting and recording data from avionics buses. In modern FTI there is also a proliferation of standards for recording and transmission including IRIG 106 Chapter 10, iNET and IENA. In this paper some common approaches to bus monitoring are compared and contrasted for popular buses such as ARINC 429, AFDX and Time Triggered Protocol. For each bus type the best approach is selected for reliable acquisition, speed of configuration, low latency telemetry and compact recording which is optimized for playback.

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