Evaluation of High-speed Train Communication Handover Models Based on DEA

Broadband communications for high speed train is becoming a main trend in high mobility communications. The main bottleneck of this communication network is handover, since the handover occurs so frequently and the delays are so long that broadband real-time communication cannot apply. Various handover models have been developed and studied recently. However, no comprehensive evaluation method for these models is employed. To this end, we borrow Data Envelopment Analysis (DEA) method to evaluate six typical handover system models. Handover models that to be evaluated are introduced. A brief presentation of DEA and its characters is provided. A specific procedure of the evaluation is proposed. Then the results of the evaluation are obtained by running the DEA. Finally, we give our comments and conclusions to all the handover models. We hope our work will supply a gap in the system evaluation area.Comment: 5 pages, accepted for publication, The IEEE 79th Vehicular Technology Conference (VTC 2014 Spring), May, 201

Implementation and outcomes of the Expanded Public Works Programme (EPWP) in Mabopane

Thesis presented in partial fulfilment for the degree of Master of Management (in the field of Public Sector Monitoring and Evaluation) to the Faculty of Commerce, Law, and Management, University of the Witwatersrand, 201622 years into the democracy, South Africa is still struggling with unemployment. Issues such as poor education outcomes, high disease burden, uneven public service performance, corruption and others have been listed amongst issues the country is facing however; poverty and inequality have been identified as the two main challenges facing the country (The National planning commission, 2012). This research attempted to understand unemployment and how the EPWP addresses the unemployment issues at a local level. The EPWP intends to provide temporary employment and provide training to its beneficiaries through skills programmes, learnership and artisan development. The skills and training provided intend to enhance the beneficiaries’ chances of being employable on other projects after exiting the EPWP (EPWP, 2016) Between 1994 and 2014 white labour force has increased with 9 percent, Indian/Asian labour force increased with 45 percent, 5 percent increase of coloured work force and a 95 percent hike of black African labour force (Stats SA, 2014). According to the National planning commission (2012) South Africa has made a remarkable transition from apartheid into democracy. The high growth experienced by the black African ethnic group has been attributed to the number of interventions implemented by the government to eradicate inequality such as Affirmative Action Act (AA). From the stats provided, one is able to deduce that the government has been able to make progress in terms of decreasing inequality and therefore needs to develop employment creation strategies to address unemployment. The literature review conducted in this study indicates a link between unemployment, economic growth, apartheid and skills development. Apartheid has not been pursued as an attribute as strategies to overcome it have become pre-eminent. This research utilised the qualitative strategy and cross-sectional research design. Semi-structured interviews were conducted with interview schedule as a guiding tool for basic questions, the researcher asked further questions when required to do so.XL201

Radio Communications

In the last decades the restless evolution of information and communication technologies (ICT) brought to a deep transformation of our habits. The growth of the Internet and the advances in hardware and software implementations modified our way to communicate and to share information. In this book, an overview of the major issues faced today by researchers in the field of radio communications is given through 35 high quality chapters written by specialists working in universities and research centers all over the world. Various aspects will be deeply discussed: channel modeling, beamforming, multiple antennas, cooperative networks, opportunistic scheduling, advanced admission control, handover management, systems performance assessment, routing issues in mobility conditions, localization, web security. Advanced techniques for the radio resource management will be discussed both in single and multiple radio technologies; either in infrastructure, mesh or ad hoc networks

An Energy-Efficient and Reliable Data Transmission Scheme for Transmitter-based Energy Harvesting Networks

Energy harvesting technology has been studied to overcome a limited power resource problem for a sensor network. This paper proposes a new data transmission period control and reliable data transmission algorithm for energy harvesting based sensor networks. Although previous studies proposed a communication protocol for energy harvesting based sensor networks, it still needs additional discussion. Proposed algorithm control a data transmission period and the number of data transmission dynamically based on environment information. Through this, energy consumption is reduced and transmission reliability is improved. The simulation result shows that the proposed algorithm is more efficient when compared with previous energy harvesting based communication standard, Enocean in terms of transmission success rate and residual energy.This research was supported by Basic Science Research Program through the National Research Foundation by Korea (NRF) funded by the Ministry of Education, Science and Technology(2012R1A1A3012227)

Energy Efficiency

This book is one of the most comprehensive and up-to-date books written on Energy Efficiency. The readers will learn about different technologies for energy efficiency policies and programs to reduce the amount of energy. The book provides some studies and specific sets of policies and programs that are implemented in order to maximize the potential for energy efficiency improvement. It contains unique insights from scientists with academic and industrial expertise in the field of energy efficiency collected in this multi-disciplinary forum

Streamlining Digital Modeling and Building Information Modelling (BIM) Uses for the Oil and Gas Projects

The oil and gas industry is a technology-driven industry. Over the last two decades, it has heavily made use of digital modeling and associated technologies (DMAT) to enhance its commercial capability. Meanwhile, the Building Information Modelling (BIM) has grown at an exponential rate in the built environment sector. It is not only a digital representation of physical and functional characteristics of a facility, but it has also made an impact on the management processes of building project lifecycle. It is apparent that there are many similarities between BIM and DMAT usability in the aspect of physical modeling and functionality. The aim of this study is to streamline the usage of both DMAT and BIM whilst discovering valuable practices for performance improvement in the oil and gas projects. To achieve this, 28 BIM guidelines, 83 DMAT academic publications and 101 DMAT vendor case studies were selected for review. The findings uncover (a) 38 BIM uses; (b) 32 DMAT uses and; (c) 36 both DMAT and BIM uses. The synergy between DMAT and BIM uses would render insightful references into managing efficient oil and gas’s projects. It also helps project stakeholders to recognise future investment or potential development areas of BIM and DMAT uses in their projects

New Technology and Automation in Freight Transport and Handling Systems

This is an evidence review that examines the trends in manufacturing and global supply chains, looking at the international trade, technology and users, and how these may change between now and 2040. The review has been commissioned by the Government Office for Science within the Foresight project. The Foresight Future of Mobility project is run from within the UK Government Office for Science (GO-Science). The Foresight project was launched to try to understand the broad question "What benefits/ opportunities could the transport system of the future provide and what are the implications for Government and society?

Higher education and political transition : the University of Macau in comparative perspective

EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Sea Container Terminals

Due to a rapid growth in world trade and a huge increase in containerized goods, sea container terminals play a vital role in globe-spanning supply chains. Container terminals should be able to handle large ships, with large call sizes within the shortest time possible, and at competitive rates. In response, terminal operators, shipping liners, and port authorities are investing in new technologies to improve container handling infrastructure and operational efficiency. Container terminals face challenging research problems which have received much attention from the academic community. The focus of this paper is to highlight the recent developments in the container terminals, which can be categorized into three areas: (1) innovative container terminal technologies, (2) new OR directions and models for existing research areas, and (3) emerging areas in container terminal research. By choosing this focus, we complement existing reviews on container terminal operations