1,721,328 research outputs found

    A Research Framework for Investigating Public Private Partnerships (PPP) in Hong Kong

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    \ud PPP is a general term covering all contracted relationships between the public and private sectors to produce a public asset or to deliver a public service. Its major advantage lies in utilising resources from the private sector to alleviate some of the financial burdens of the government.\ud The Asian financial turmoil in the late 1990s has imposed enormous pressure on the budget of the Hong Kong Special Administrative Region (HKSAR) Government. With a continuous outcry for better public services due to the rapid development of Hong Kong, alternative financing models need to be sought to ensure sustainability. Hong Kong has the advantage of being the international gateway to Mainland China, and with this benefit has attracted overseas enterprises to base their offices in Hong Kong for the Asian market. Obviously the private sector has much to contribute.\ud The HKSAR Government has realised the benefits of using PPP in Hong Kong as well as the success achieved overseas. But a more thorough research is needed to develop the most suitable practice of PPP in terms of project nature, project complexity, project type and project scale under which PPP is most appropriate for Hong Kong.\ud This paper provides an initial report of a research project being funded by the Research Grants Council (RGC) of the HKSAR. The project aims to evaluate the benefits and risks of PPP adopted in Australia and the United Kingdom, and from these previous experiences to develop a best practice framework for implementing PPP in Hong Kong. It firstly reports on the status of PPP development trend and the hands-on experiences which have been drawn in these countries. Qualitative and quantitative research methods applied in conducting the research are discussed. The likely impacts of the study are highlighted. It is believed that the construction industry and the government would benefit a lot as a result of this study, and further procurement and project financing options would be opened up for delivering better future public service

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Battery Energy Management Techniques for Electric Vehicle Traction System

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    A Master of Science thesis in Electrical Engineering by Ahmed Sayed AbdelAal AbdelAziz entitled, “Battery Energy Management Techniques for Electric Vehicle Traction System”, submitted in November 2019. Thesis advisor is Dr. Shayok Mukhopadhyay and thesis co-advisor is Dr. Habibur Rehman. Soft copy is available (Thesis, Approval Signatures, Completion Certificate, and AUS Archives Consent Form).Dependency of the modern society on fossil fuels has created significant levels of environmental pollution. Therefore, the automotive industry is moving towards a cleaner transportation system in the form of battery electric vehicles (BEV). A major issue with BEVs is the rapid decline in the battery runtime and lifetime represented by the State of Charge (SOC) and State of Health (SOH) respectively. Consequently, this work focuses on controlling the speed of an induction motor driven electric vehicle (EV) traction system while minimizing the SOC and SOH degradation of a Lithium-ion (Li-ion) battery bank. The first objective is designing a battery energy management (BEM) technique for an indirect field oriented (IFO) induction motor drive system using two cascaded fuzzy logic controllers (CSFLC). In this technique, the first fuzzy logic controller (FLC) generates the desired current to regulate the motor speed while the second FLC limits the current based on the battery SOC. In the second technique, a model predictive controller (MPC) regulates the motor speed while an FLC adjusts the input weight of the MPC (named FMPC), which takes the battery SOC into account when generating the current. The above mentioned controllers are implemented on an EV traction system with the New European Drive Cycle (NEDC) and the Supplemental Federal Test Procedure (US06). There is a decrease in SOC degradation of 8.1% and 5.88%, decrease in SOH degradation of 8.3% and 6.4%, and a reduction of 8.21% and 5.36% in energy consumption for the CSFLC with the NEDC and US06 drive cycles respectively. There is a decrease in SOC degradation of 4.29% and 6.57%, decrease in SOH degradation of 4.3% and 6%, and a reduction of 4.37% and 6.1% in energy consumption for the FMPC with the NEDC and US06 drive cycles respectively. The absolute average error in motor speed for the CSFLC is 3.7 RPM and 6.93 RPM as compared to the 1.28 RPM and 1.69 RPM for the FLC. While, the FMPC has 3.02 RPM and 3.13 RPM motor speed error as compared to 1.17 RPM and 1.19 RPM for the MPC with the NEDC and US06 drive cycles.College of EngineeringDepartment of Electrical EngineeringMaster of Science in Electrical Engineering (MSEE
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