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Articles 8251 - 8280 of 8668
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How Does Spousal Education Matter? Some Evidence From Cambodia, Tomoki Fujii, Sophal Ear
How Does Spousal Education Matter? Some Evidence From Cambodia, Tomoki Fujii, Sophal Ear
Research Collection School Of Economics
An econometric analysis of the World Food Programme Civil Insecurity Baseline Survey (1998) and Cambodia Socio-Economic Survey (1999) data is undertaken to examine the role of education and literacy in explaining household expenditure, as hypothesized in human capital theory where education is an investment with returns in the form of income. Explanatory variables were selected from a large set of observed variables by a systematic procedure to avoid the bias arising from arbitrary model selection. Spousal education and literacy are found to be significant explanatory variables in the determination of household expenditure, exceeding even the coefficients attached to the head …
Estimation Of The Stochastic Volatility Model By The Empirical Characteristic Function Method, J. Knight, S. Satchell, Jun Yu
Estimation Of The Stochastic Volatility Model By The Empirical Characteristic Function Method, J. Knight, S. Satchell, Jun Yu
Research Collection School Of Economics
The stochastic volatility model has no closed form for its likelihood and hence the maximum likelihood estimation method is difficult to implement. However, it can be shown that the model has a known characteristic function. As a consequence, the model is estimable via the empirical characteristic function. In this paper, the characteristic function of the model is derived and the estimation procedure is discussed. An application is considered for daily returns of Australian/New Zealand dollar exchange rate. Model checking suggests that the stochastic volatility model together with the empirical characteristic function estimates fit the data well.
Anatomy Of A Coupling Query In A Web Warehouse, Sourav S. Bhowmick, Sanjay Kumar Madria, Wee-Keong Ng, Ee Peng Lim
Anatomy Of A Coupling Query In A Web Warehouse, Sourav S. Bhowmick, Sanjay Kumar Madria, Wee-Keong Ng, Ee Peng Lim
Research Collection School Of Computing and Information Systems
To populate a data warehouse specifically designed for Web data, i.e. web warehouse, it is imperative to harness relevant documents from the Web. In this paper, we describe a query mechanism called coupling query to glean relevant Web data in the context of our web warehousing system called Warehouse Of Web Data (WHOWEDA). Coupling query may be used for querying both HTML and XML documents. Some of the important features of our query mechanism are ability to query metadata, content, internal and external (hyperlink) structure of Web documents based on partial knowledge, ability to express constraints on tag attributes and …
Component-Based Development Using Uml, L. Zhao, Keng Siau
Component-Based Development Using Uml, L. Zhao, Keng Siau
Research Collection School Of Computing and Information Systems
Component-based software development (CBD) is a potential breakthrough for software engineering. Unified Modeling Language (UML) can potentially facilitate CBD design and modeling. Although many research projects concentrate on the conceptual interrelation of UML and CBD, few incorporate actual component frameworks into the discussion, which is critical for real-world software system design and modeling. This paper reviews component-based development, including the use of UML for modeling CBD. The paper then discusses the means by which UML extension mechanisms can be used to better support the popular component framework -- CORBA. Two other important component frameworks, DCOM and Web Services, are also …
Using Real Options Analysis For Evaluating Uncertain Investments In Information Technology: Insights From The Icis 2001 Debate, Paul P. Tallon, Robert J. Kauffman, Henry C. Lucas, Andrew B. Whinston, Kevin Zhu
Using Real Options Analysis For Evaluating Uncertain Investments In Information Technology: Insights From The Icis 2001 Debate, Paul P. Tallon, Robert J. Kauffman, Henry C. Lucas, Andrew B. Whinston, Kevin Zhu
Research Collection School Of Computing and Information Systems
Business and information systems (IS) executives continue to grapple with issues of risk and uncertainty in evaluating investments in information technology (IT). Despite the use of net present value (NPV) and other investment appraisal techniques, executives are often forced to rely on instinct when finalizing IT investment decisions. Recognizing the shortcomings of NPV, real options analysis has been suggested as an alternative approach, one that considers the risks associated with an investment while recognizing the ability of corporations to defer an investment until a later period or to make a partial investment instead. Responding to a growing interest in real …
Market Power In Chinese Taipei: Laws, Policies And Treatments, Kung-Chung Liu, Yun-Peng Chu
Market Power In Chinese Taipei: Laws, Policies And Treatments, Kung-Chung Liu, Yun-Peng Chu
Research Collection Yong Pung How School Of Law
The experience of Chinese Taipei shows that opening up a previously protected market to new entrants can be a more effective and reliable way to enhance competition than regulating the behavior of dominant or monopolistic firms. Moreover, when opening up the market, the liberalizing measures adopted by government should be market-structure-neutral. That is, it should not try to dictate the direction and results of market competition. A more pressure-resistant mechanism should be designed to deal with market power, taking the form of a regime that is cross-sector, independent and collective in its decision-making, such as has been the case with …
On Justificiation And Method In Law Reform: The Contracts (Rights Of Third Parties) Act 1999, Andrew Phang
On Justificiation And Method In Law Reform: The Contracts (Rights Of Third Parties) Act 1999, Andrew Phang
Research Collection Yong Pung How School Of Law
The present article, whilst focusing on the English Contracts (Rights of Third Parties) Act 1999, does not canvass the more specific details of that Act which have been dealt with quite comprehensively elsewhere. The focus of this article is broader and is dual in nature. It will examine, first, the justification for the 1999 Act and, in particular, attempts to respond to the critique that the Act is wholly anathema to the underlying justification of the doctrine of privity itself. It will also consider whether or not the 1999 Act is an effective improvement over the existing (as well as …
Characteristics Of Erp Software Maintenance: A Multiple Case Study, Fiona Fui-Hoon Nah, Silvana Faja, Teuta Cata
Characteristics Of Erp Software Maintenance: A Multiple Case Study, Fiona Fui-Hoon Nah, Silvana Faja, Teuta Cata
Research Collection School Of Computing and Information Systems
A multiple case study approach was employed to identify maintenance activities pertaining to enterprise resource planning (ERP) implementation, classify them into maintenance categories, and assess their relative frequency at various stages of the ERP maintenance lifecycle. Five maintenance categories (corrective, adaptive, perfective, preventive, user support) were identified from a review of the literature on software maintenance. A new category pertaining to ‘communication, coordination and knowledge exchange with external parties’ and herein labeled ‘external parties’ is introduced to highlight the supporting role of external parties in ERP maintenance. This category includes reporting problems to vendors and consultants, tracking their progress towards …
From Common Law To Civil Law Jurisdictions: Court Adr On The Move In Germany, Nadja Alexander
From Common Law To Civil Law Jurisdictions: Court Adr On The Move In Germany, Nadja Alexander
Research Collection Yong Pung How School Of Law
In Australia today, ADR processes are recognised not only as a distinct system of dispute resolution, but also as a system that interacts interdependently with the legal system. This is most clearly demonstrated in the context of court-related mediation, which is increasingly seen as an effective way to increase access to, participation in, and satisfaction with the way legal disputes are resolved. Cappelletti categorises ADR as the third wave in the worldwide access-to-justice movement. ADR provides a different approach and a different sort of justice for solving disputes — what Cappelletti labels ‘co-existential justice’.
Scripted Thought: Processing Korean Hancha And Hangul In A Multimedia Context, Nader T. Tavassoli, Jin K. Han
Scripted Thought: Processing Korean Hancha And Hangul In A Multimedia Context, Nader T. Tavassoli, Jin K. Han
Research Collection Lee Kong Chian School Of Business
We compare the cognitive processing of words written in alphabetic scripts with the cognitive processing of words written in logographic scripts. We suggest that the processing of words written in alphabetic scripts relies more heavily on the storage of--and the serial rehearsal properties of--short-term memory's phonological loop. In contrast, the processing of words written in logographic scripts relies more on the storage of--and the spatial-relational rehearsal properties of--visual short-term memory. A series of three experiments investigates implications of these processing differences within a single language, Korean, where words can be written in the alphabetic Hangul or in the logographic Han-cha. …
Assessors' Use Of Personality Traits In Descriptions Of Assessment Centre Candidates: A Five-Factor Model Perspective, Filip Lievens, Filip De Fruyt, Karen Van Dam
Assessors' Use Of Personality Traits In Descriptions Of Assessment Centre Candidates: A Five-Factor Model Perspective, Filip Lievens, Filip De Fruyt, Karen Van Dam
Research Collection Lee Kong Chian School Of Business
In assessment centres assessors are typically taught to note down behavioural observations. However, previous studies have shown that about 20% of assessor notes contain trait descriptors. Instead of regarding these descriptors as errors, this study examines their position in a personality descriptive taxonomy (i.e. the AB5C taxonomy, see Hofstee, De Raad, & Goldberg, 1992) and relates them to employment recommendations. To this end, assessor notes of 403 assessees (214 men, 189 women; mean age 33 years) were scrutinized for personality descriptors. Results show that assessors, as a group, use descriptors referring to all five personality domains with a preference for …
I Know What You Know: Assumptions About Others' Knowledge And Their Effects On Message Construction, Ivy Yee-Man Lau, Chi-Yue Chiu, Ying-Yi Hong
I Know What You Know: Assumptions About Others' Knowledge And Their Effects On Message Construction, Ivy Yee-Man Lau, Chi-Yue Chiu, Ying-Yi Hong
Research Collection School of Social Sciences
Current models of interpersonal communication assume that estimation of listener's knowledge is a basis for message formulation. By introducing methodological modifications to the Fussell and Krauss paradigm, the present study provides more definitive evidence for the use of knowledge estimation in message productions.
Automated Online News Classification With Personalization, Chee-Hong Chan, Aixin Sun, Ee Peng Lim
Automated Online News Classification With Personalization, Chee-Hong Chan, Aixin Sun, Ee Peng Lim
Research Collection School Of Computing and Information Systems
Classification of online news, in the past, has often been done manually. In our proposed Categorizor system, we have experimented an automated approach to classify online news using the Support Vector Machine (SVM). SVM has been shown to deliver good classification results when ample training documents are given. In our research, we have applied SVM to personalized classification of online news.
Hierarchical Text Classification And Evaluation, Aixin Sun, Ee Peng Lim
Hierarchical Text Classification And Evaluation, Aixin Sun, Ee Peng Lim
Research Collection School Of Computing and Information Systems
Hierarchical Classification refers to assigning of one or more suitable categories from a hierarchical category space to a document. While previous work in hierarchical classification focused on virtual category trees where documents are assigned only to the leaf categories, we propose atop-down level-based classification method that can classify documents to both leaf and internal categories. As the standard performance measures assume independence between categories, they have not considered the documents incorrectly classified into categories that are similar or not far from the correct ones in the category tree. We therefore propose the Category-Similarity Measures and Distance-Based Measures to consider the …
Pickup And Delivery Problem With Time Windows: Algorithms And Test Case Generation, Hoong Chuin Lau, Zhe Liang
Pickup And Delivery Problem With Time Windows: Algorithms And Test Case Generation, Hoong Chuin Lau, Zhe Liang
Research Collection School Of Computing and Information Systems
In the pickup and delivery problem with time windows (PDPTW), vehicles have to transport loads from origins to destinations respecting capacity and time constraints. In this paper, we present a two-phase method to solve the PDPTW. In the first phase, we apply a novel construction heuristics to generate an initial solution. In the second phase, a tabu search method is proposed to improve the solution. Another contribution of this paper is a strategy to generate good problem instances and benchmarking solutions for PDPTW, based on Solomon's benchmark test cases for VRPTW. Experimental results show that our approach yields very good …
Modeling And Simulation Of Steady State And Transient Behaviors For Emergent Socs, Joann M. Paul, Arne Suppe, Donald E. Thomas
Modeling And Simulation Of Steady State And Transient Behaviors For Emergent Socs, Joann M. Paul, Arne Suppe, Donald E. Thomas
Research Collection School Of Computing and Information Systems
We introduce a formal basis for viewing computer systems as mixed steady state and non-steady state (transient) behaviors to motivate novel design strategies resulting from simultaneous consideration of function, scheduling and architecture. We relate three design styles: Hierarchical decomposition, static mapping and directed platform that have traditionally been separate. By considering them together, we reason that once a steady state system is mapped to an architecture, the unused processing and communication power may be viewed as a platform for a transient system, ultimately resulting in more effective design approaches that ease the static mapping problem while still allowing for effective …
Jointly Coordinating Ecn And Tcp For Rapid Adaptation To Varying Bandwidth, Archan Misra, Teunis Ott
Jointly Coordinating Ecn And Tcp For Rapid Adaptation To Varying Bandwidth, Archan Misra, Teunis Ott
Research Collection School Of Computing and Information Systems
The introduction of service differentiation in the Internet implies that the residual bandwidth available to best-effort traffic becomes highly variable. We explore the design of a rapidly-reactive congestion control framework, where the ECN-aware best-effort flows aggressively go after any unused capacity. By making routers mark packets in a much more aggressive manner, we are able to achieve fast backoff in the network without resorting to the TCP's current drastic step of halving the congestion window. Simulations indicate that our ECN-mod protocol is better than ECN-NewReno in exploiting rapid variations in the available bandwidth. Moreover, the milder backoff policy of ECN-mod …
Hierarchical Mobility Management For Voip Traffic, Archan Misra, Subir Das, Anthony J. Mcauley
Hierarchical Mobility Management For Voip Traffic, Archan Misra, Subir Das, Anthony J. Mcauley
Research Collection School Of Computing and Information Systems
A hierarchical IP-based mobility management mechanism is proposed for VoIP applications. The suggested mechanism uses the DMA (dynamic mobility agent) architecture, based on IDMP (intra-domain mobility management protocol), for managing intra-domain mobility and the dynamic binding mechanism of SIP (session initiation protocol) for managing global mobility. This combination of network and application layer mobility management reduces the global signaling load, provides fast handoff for ongoing conversations, enables efficient global transport and supports IP-layer paging.
Mining Multi-Level Rules With Recurrent Items Using Fp'-Tree, Kok-Leong Ong, Wee-Keong Ng, Ee Peng Lim
Mining Multi-Level Rules With Recurrent Items Using Fp'-Tree, Kok-Leong Ong, Wee-Keong Ng, Ee Peng Lim
Research Collection School Of Computing and Information Systems
Association rule mining has received broad research in the academic and wide application in the real world. As a result, many variations exist and one such variant is the mining of multi-level rules. The mining of multi-level rules has proved to be useful in discovering important knowledge that conventional algorithms such as Apriori, SETM, DIC etc., miss. However, existing techniques for mining multi-level rules have failed to take into account the recurrence relationship that can occur in a transaction during the translation of an atomic item to a higher level representation. As a result, rules containing recurrent items go unnoticed. …
Autoconfiguration, Registration And Mobility Management For Pervasive Computing, Archan Misra, Subir Das, Anthony Mcauley, Sajal K. Das
Autoconfiguration, Registration And Mobility Management For Pervasive Computing, Archan Misra, Subir Das, Anthony Mcauley, Sajal K. Das
Research Collection School Of Computing and Information Systems
In the vision of pervasive computing, users will exchange information and control their environments from anywhere using various wireline/wireless networks and computing devices. We believe that current protocols, such as DHCP, PPP, and Mobile IP, must be enhanced to support pervasive network access. In particular, this article identifies three fundamental functions: autoconfiguration, registration, and mobility management, that need such enhancements. Realizing that the IP autoconfiguration capabilities must be extended to configure routers and large dynamic networks, we first describe our autoconfiguration solution based on the dynamic configuration and distribution protocol (DCDP). Second, we discuss why providing user-specific services over a …
Role Of Use Case Diagram In Requirement Analysis, Keng Siau, L. Lee
Role Of Use Case Diagram In Requirement Analysis, Keng Siau, L. Lee
Research Collection School Of Computing and Information Systems
Since its debut and acceptance as a de facto standard of the object-oriented paradigm, UML has receivedcontroversial reviews. The most controversial diagramming technique in UML is undoubtedly the Use Casediagrams. Some claim that Use Case diagrams do not play a valuable role in requirement analysis. Othersargue that Use Case diagrams captured neither the static nor the dynamic aspects of the systems. The objective of this study is to investigate the role and value of Use Case diagrams in requirement analysis. We will investigate the information content of Use Case diagram and its role in requirement analysis.
Video Partitioning By Temporal Slice Coherency, Chong-Wah Ngo, Ting-Chuen Pong, Roland T. Chin
Video Partitioning By Temporal Slice Coherency, Chong-Wah Ngo, Ting-Chuen Pong, Roland T. Chin
Research Collection School Of Computing and Information Systems
We present a novel approach for video partitioning by detecting three essential types of camera breaks, namely cuts, wipes, and dissolves. The approach is based on the analysis of temporal slices which are extracted from the video by slicing through the sequence of video frames and collecting temporal signatures. Each of these slices contains both spatial and temporal information from which coherent regions are indicative of uninterrupted video partitions separated by camera breaks. Properties could further be extracted from the slice for both the detection and classification of camera breaks. For example, cut and wipes are detected by color-texture properties, …
Application-Centric Analysis Of Ip-Based Mobility Management Techniques, Archan Misra, Subir Das, Prathima Agrawal
Application-Centric Analysis Of Ip-Based Mobility Management Techniques, Archan Misra, Subir Das, Prathima Agrawal
Research Collection School Of Computing and Information Systems
This paper considers three applications—VoIP, mobile Web access and mobile server-based data transfers—and evaluates the applicability of various IP-based mobility management mechanisms. We first survey the features and characteristics of various IP mobility protocols, such as MIPv4, MIPv6, MIP-RO, SIP, CIP, HAWAII, MIP-RR and IDMP, and then evaluate their utility on an application-specific basis. The diversity in the mobility-related requirements ensures that no single mobility solution is universally applicable. We recommend a hierarchical mobility architecture. The framework uses our Dynamic Mobility Agent (DMA) architecture for managing intra-domain mobility and multiple application-based binding protocols for supporting inter-domain mobility. Thus, we recommend …
Housing Policy, Wealth Formation And The Singapore Economy, Sock-Yong Phang
Housing Policy, Wealth Formation And The Singapore Economy, Sock-Yong Phang
Research Collection School Of Economics
This paper evaluates the contribution of housing policy in Singapore to financial sector development, housing wealth formation and macro-economic performance, both retrospectively and prospectively. It provides an overview of past housing policies and traces the linkages to the financial sector. Housing policy as effected through the Housing and Development Board and the Central Provident Fund (CPF) hampered the development of the commercial housing loans sector and domestic financial markets, but contributed to the overall growth and stability of the housing loans market and associated financial institutions. Housing policy and the trend of housing asset inflation contributed significantly to the formation …
The Effectiveness Of Institutional Activism, Gary L. Caton, Jeremy Goh, Jeffrey Donaldson
The Effectiveness Of Institutional Activism, Gary L. Caton, Jeremy Goh, Jeffrey Donaldson
Research Collection Lee Kong Chian School Of Business
Researchers examined earnings-forecast revisions and stock returns after release of the Focus List of poorly performing companies by the Council of Institutional Investors. Using Tobin's q as a measure of a company's ability to improve performance, researchers found significant and positive abnormal forecast revisions and post-release stock returns for companies with q greater than one. Findings support the proposition that institutional activism is effective for underperforming companies - but only those companies with the ability to respond to the challenge to improve performance.
Mobile Commerce: Promises, Challenges And Research Agenda, Keng Siau, Ee Peng Lim
Mobile Commerce: Promises, Challenges And Research Agenda, Keng Siau, Ee Peng Lim
Research Collection School Of Computing and Information Systems
Advances in wireless technology increase the number of mobile device users and give pace to the rapid development of e-commerce using these devices. The new type of e-commerce, conducting transactions via mobile terminals, is called mobile commerce. Due to its inherent characteristics such as ubiquity, personalization, flexibility, and dissemination, mobile commerce promises businesses unprecedented market potential, great productivity, and high profitability. This paper presents an overview of mobile commerce development by examining the enabling technologies, the impact of mobile commerce on the business world, and the implications to mobile commerce providers. The paper also provides an agenda for future research …
Secure And Private Distribution Of Online Video And Some Related Cryptographic Issues, Feng Bao, Robert H. Deng, Peirong Bao, Yan Guo, Hongjun Wu
Secure And Private Distribution Of Online Video And Some Related Cryptographic Issues, Feng Bao, Robert H. Deng, Peirong Bao, Yan Guo, Hongjun Wu
Research Collection School Of Computing and Information Systems
With the rapid growth of broadband infrastructure, it is thought that the bottleneck for video-on-demand service through Internet is being cleared. However, digital video content protection and consumers privacy protection emerge as new major obstacles. In this paper we propose an online video distribution system with strong content security and privacy protection. We mainly focus on the study of security and privacy problems related to the system. Besides presenting the new system, we intensively discuss some relevant cryptographic issues, such as content protection, private information retrieval, super-speed encryption/decryption for video, and PKC with fast decryption etc. The paper can be …
Recent Advances In Content-Based Video Analysis, Chong-Wah Ngo, Ting-Chuen Pong, Hong-Jiang Zhang
Recent Advances In Content-Based Video Analysis, Chong-Wah Ngo, Ting-Chuen Pong, Hong-Jiang Zhang
Research Collection School Of Computing and Information Systems
In this paper, we present major issues in video parsing, abstraction, retrieval and semantic analysis. We discuss the success, the difficulties and the expectations in these areas. In addition, we identify important opened problems that can lead to more sophisticated ways of video content analysis. For video parsing, we discuss topics in video partitioning, motion characterization and object segmentation. The success in video parsing, in general, will have a great impact on video representation and retrieval. We present three levels of abstracting video content by scene, keyframe and key object representations. These representation schemes in overall serve as a good …
Coping With Growth Transitions: The Case Of Chinese Family Businesses In Singapore, Wee-Liang Tan, Siew Tong Fock
Coping With Growth Transitions: The Case Of Chinese Family Businesses In Singapore, Wee-Liang Tan, Siew Tong Fock
Research Collection Lee Kong Chian School Of Business
Families control more than half of the corporations in East Asia. The contribution of family businesses to Asia's economic growth is predicated upon successfully growing their businesses. Many family businesses in East Asia, spanning countries such as Taiwan, Hong Kong, Indonesia, Singapore, and Malaysia, are Chinese owned and managed. Some claim that these businesses will never develop into full-fledged multinational enterprises because of their cultural heritage (Redding, 1990). However, some Chinese family businesses have successfully made the transition.This paper presents an in-depth study of five Chinese family businesses in Singapore that have successfully made the transition in growth and size …
Neyman's Smooth Test And Its Use In Econometrics, Anil K. Bera, Aurobindo Ghosh
Neyman's Smooth Test And Its Use In Econometrics, Anil K. Bera, Aurobindo Ghosh
Research Collection School Of Economics
The following essay is a reappraisal of the role of the smooth test proposed by Neyman (1937) in the context of current applications in econometrics. We revisit the derivation of the smooth test and put it into the perspective of the existing literature on tests based on probability integral transforms suggested by early pioneers such as R.A.Fisher (1930, 1932) and Karl Pearson (1933, 1934) and the other tests for goodness-of-fit. Our discussion touches data-driven and other methods of testing and inference on the order of the smooth test and the motivation and choice of orthogonal polynomials used by Neyman and …