Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (9338)
- Social and Behavioral Sciences (9166)
- Computer Sciences (9030)
- Business (6904)
- International and Area Studies (3679)
-
- Asian Studies (3587)
- Databases and Information Systems (3562)
- Economics (2446)
- Law (2305)
- Software Engineering (2215)
- Artificial Intelligence and Robotics (1906)
- Finance and Financial Management (1290)
- Public Affairs, Public Policy and Public Administration (1143)
- Information Security (1108)
- Sociology (1108)
- Engineering (1100)
- Psychology (1081)
- Organizational Behavior and Theory (1064)
- Numerical Analysis and Scientific Computing (1059)
- Graphics and Human Computer Interfaces (952)
- Accounting (916)
- Education (900)
- Econometrics (824)
- Technology and Innovation (817)
- Communication (811)
- Strategic Management Policy (732)
- Arts and Humanities (689)
- Corporate Finance (665)
- Political Science (665)
- Higher Education (598)
- Keyword
-
- Singapore (1056)
- China (354)
- Singapore Management University (275)
- Innovation (206)
- COVID-19 (177)
-
- Machine learning (175)
- Artificial intelligence (144)
- Social media (137)
- Deep learning (135)
- Sustainability (130)
- Higher education (129)
- Corporate governance (117)
- Culture (113)
- Asia (110)
- Technology (109)
- Trust (97)
- Pandemic (92)
- Creativity (85)
- Performance (84)
- Leadership (83)
- Well-being (82)
- Education (81)
- Climate change (77)
- Data mining (77)
- Privacy (74)
- Reinforcement learning (74)
- Collaboration (72)
- India (71)
- Marketing (71)
- Southeast Asia (70)
- Publication Year
- Publication
-
- Research Collection School Of Computing and Information Systems (8692)
- Research Collection Lee Kong Chian School Of Business (3273)
- Research Collection School of Social Sciences (2262)
- Research Collection Yong Pung How School Of Law (2076)
- Research Collection School Of Economics (1760)
-
- Dissertations and Theses Collection (Open Access) (891)
- Research Collection School Of Accountancy (815)
- Perspectives@SMU (663)
- Research Collection College of Integrative Studies (534)
- Knowledge@SMU (403)
- Asian Management Insights (317)
- SMU Press Releases and News (243)
- Research Collection Library (221)
- Social Space (210)
- Research Collection Institute of Service Excellence (2007-2024) (85)
- Sim Kee Boon Institute for Financial Economics (62)
- Oral History Collection (50)
- Singapore Law Journal (Lexicon) (50)
- Digital Narratives of Asia (46)
- Dissertations and Theses Collection (45)
- Research@SMU: Connecting the Dots (45)
- Research Collection BNP Paribas Hedge Fund Centre (37)
- ROSA Research Briefs (31)
- Report to Stakeholders (25)
- Lien Centre for Social Innovation: Research (22)
- Research Collection Lee Kong Chian School of Business (22)
- CCX Research (20)
- Friends of the Museum Collection (20)
- SMU Corporate Reports (19)
- Student Publications (18)
- Publication Type
- File Type
Articles 21481 - 21510 of 23193
Full-Text Articles in Entire DC Network
On The Security Of The Lee-Hwang Group-Oriented Undeniable Signature Schemes, Guilin Wang, Jianying Zhou, Robert H. Deng
On The Security Of The Lee-Hwang Group-Oriented Undeniable Signature Schemes, Guilin Wang, Jianying Zhou, Robert H. Deng
Research Collection School Of Computing and Information Systems
Undeniable signature is an intriguing concept introduced by Chaum and van Antwerpen at Crypto89. In 1999, Lee and Hwang presented two group-oriented undeniable signature schemes with a trusted center. Their schemes are natural generalizations of Chaums zero knowledge undeniable signature scheme proposed in 1990. However, we find that the Lee-Hwang schemes are insecure. In this paper, we demonstrate five effective attacks on their schemes: four of them are insider universal forgeries, in which one dishonest member (maybe colluding with a verifier) can get a valid signature on any chosen massage, and another attack allows a dishonest member to prevent honest …
The Metacurriculum: Guarding The Golden Apples Of University Culture, Dawn Jeanine Dekle
The Metacurriculum: Guarding The Golden Apples Of University Culture, Dawn Jeanine Dekle
Research Collection School of Social Sciences
Presents information on the emergence of the metacurriculum from the interaction of the official curriculum and the hidden curriculum in higher education. Impact of the metacurriculum on the culture of a university; Difference between the official and the hidden curriculum; Importance of hidden curriculum on metacurriculum.
Towards Personalised Web Intelligence, Ah-Hwee Tan, Hwee-Leng Ong, Hong Pan, Jamie Ng, Qiu-Xiang Li
Towards Personalised Web Intelligence, Ah-Hwee Tan, Hwee-Leng Ong, Hong Pan, Jamie Ng, Qiu-Xiang Li
Research Collection School Of Computing and Information Systems
The Flexible Organizer for Competitive Intelligence (FOCI) is a personalised web intelligence system that provides an integrated platform for gathering, organising, tracking, and disseminating competitive information on the web. FOCI builds personalised information portfolios through a novel method called User-Configurable Clustering, which allows a user to personalise his/her portfolios in terms of the content as well as the organisational structure. This paper outlines the key challenges we face in personalised information management and gives a detailed account of FOCI’s underlying personalisation mechanism. For a quantitative evaluation of the system’s performance, we propose a set of performance indices based on information …
Proxy Signature Scheme With Multiple Original Signers For Wireless E-Commerce Applications, Guilin Wang, Feng Bao, Jianying Zhou, Robert H. Deng
Proxy Signature Scheme With Multiple Original Signers For Wireless E-Commerce Applications, Guilin Wang, Feng Bao, Jianying Zhou, Robert H. Deng
Research Collection School Of Computing and Information Systems
In a proxy signature scheme, a user delegates his/her signing capability to another user in such a way that the latter can sign messages on behalf of the former. We propose an efficient and secure proxy signature scheme with multiple original signers. Our scheme is suitable for wireless electronic commerce applications, since the overheads of computation and communication are low. As an example, we present an electronic air ticket booking scheme for wireless customers.
A Var Analysis Of Singapore's Monetary Transmission Mechanism, Hwee Kwan Chow
A Var Analysis Of Singapore's Monetary Transmission Mechanism, Hwee Kwan Chow
Research Collection School Of Economics
The Singapore economy has experienced greater business cycle fluctuations in recent years, being subject to recurrent shocks from the external environment. Given the extreme openness of the economy—Singapore’s export share of GDP is approximately 180%—it is not surprising that the main cause of the increase in economic volatility is a rise in the frequency and magnitude of exogenous shocks. These include the downswing in the global electronics industry in 1996–97, the Asian financial crisis in 1997–98, the burst of the information technology bubble in 2001, and the outbreak of the SARS respiratory disease in 2003. Such a close sequence of …
Future Fiscal And Budgetary Shocks, Hian Teck Hoon, Edmund S. Phelps
Future Fiscal And Budgetary Shocks, Hian Teck Hoon, Edmund S. Phelps
Research Collection School Of Economics
We study here the effects of future tax and budgetary shocks on present levels of economic activity and real interest rates in a nonmonetary and possibly non-Ricardian economy. The paper first takes up an (unanticipated) temporary tax cut to be effective on a given future date—a delayed debt bomb. The sudden prospect of this future-dated shock causes at once a drop in the (unit) value placed on the firms’ business asset, the customer, and accordingly on the price of shares—with the result that the hourly wage, hours worked and GDP drop in tandem. This paradox of reduced activity through announcement …
Tests Of Transformation In Nonlinear Regression, Zhenlin Yang, Gemai Chen
Tests Of Transformation In Nonlinear Regression, Zhenlin Yang, Gemai Chen
Research Collection School Of Economics
This paper presents three versions of the Lagrange multiplier (LM) tests of transformation in nonlinear regression: (i) LM test based on expected information, (ii) LM test based on Hessian, and (iii) the LM test based on gradient. All three tests can be easily implemented through a nonlinear least squares procedure. Simulation results show that, in terms of finite sample performance, the LM test based on expected information is the best, followed by the LM test based on Hessian and then the LM test based on gradient. The LM test based on gradient can perform rather poorly. An example is given …
Optimizing Proportionally Fair Prices, Laura Wynter
Optimizing Proportionally Fair Prices, Laura Wynter
Research Collection School Of Computing and Information Systems
We demonstrate the non-uniqueness of proportional fairness prices, and show that the model of Kelly et al. [9] falls into the category of models that can be generalized to allow optimization of the link prices, with a view toward profit maximization. However, through this framework, we also show that the total revenue that can be obtained through proportional fairness pricing on a network is unique.
Security Analysis Of Two Signcryption Schemes, Guilin Wang, Robert H. Deng, Dongjin Kwak, Sangjae Moon
Security Analysis Of Two Signcryption Schemes, Guilin Wang, Robert H. Deng, Dongjin Kwak, Sangjae Moon
Research Collection School Of Computing and Information Systems
Signcryption is a new cryptographic primitive that performs signing and encryption simultaneously, at a cost significantly lower than that required by the traditional signature-then-encryption approach. In this paper, we present a security analysis of two such schemes: the Huang-Chang convertible signcryption scheme, and the Kwak-Moon group signcryption scheme. Our results show that both schemes are insecure. Specifically, the Huang-Chang scheme fails to provide confidentiality, while the Kwak-Moon scheme does not satisfy the properties of unforgeability, coalition-resistance, and traceability.
Robust Classification Of Event-Related Potential For Brain-Computer Interface, Manoj Thulasidas
Robust Classification Of Event-Related Potential For Brain-Computer Interface, Manoj Thulasidas
Research Collection School Of Computing and Information Systems
We report the implementation of a text input application (speller) based on the P300 event related potential. We obtain high accuracies by using an SVM classifier and a novel feature. These techniques enable us to maintain fast performance without sacrificing the accuracy, thus making the speller usable in an online mode. In order to further improve the usability, we perform various studies on the data with a view to minimizing the training time required. We present data collected from nine healthy subjects, along with the high accuracies (of the order of 95% or more) measured online. We show that the …
Testing Market Efficiency Using Statistical Arbitrage With Applications To Momentum And Value Strategies, Steve Hogan, Robert Jarrow, Melvyn Teo, Mitchell Warachka
Testing Market Efficiency Using Statistical Arbitrage With Applications To Momentum And Value Strategies, Steve Hogan, Robert Jarrow, Melvyn Teo, Mitchell Warachka
Research Collection Lee Kong Chian School Of Business
This paper introduces the concept of statistical arbitrage, a long horizon trading opportunity that generates a riskless profit and is designed to exploit persistent anomalies. Statistical arbitrage circumvents the joint hypothesis dilemma of traditional market efficiency tests because its definition is independent of any equilibrium model and its existence is incompatible with market efficiency. We provide a methodology to test for statistical arbitrage and then empirically investigate whether momentum and value trading strategies constitute statistical arbitrage opportunities. Despite adjusting for transaction costs, the influence of small stocks, margin requirements, liquidity buffers for the marking-to-market of short-sales, and higher borrowing rates, …
Learning To Live A Life That's Full, Seow Hon Tan
Learning To Live A Life That's Full, Seow Hon Tan
Research Collection Yong Pung How School Of Law
No abstract provided.
Treaties, Time Limits And Treasure Trove: The Legal Protection Of Cultural Objects In Singapore, Jack Tsen-Ta Lee
Treaties, Time Limits And Treasure Trove: The Legal Protection Of Cultural Objects In Singapore, Jack Tsen-Ta Lee
Research Collection Yong Pung How School Of Law
This article considers the extent to which civil and criminal law in Singapore deters the unlawful removal of cultural objects from the possession of private owners, art galleries and museums, or from archaeological sites, and provides redress to victims. Given Singapore's position as the crossroads of Asia, the law must be able to cope with the flow of objects in and out of the country. The law is currently deficient as it is not tailored to deal with issues concerning cultural heritage, and needs to be reformed in several respects. There are sound reasons for a modern State like Singapore …
The Impact Of Corporate Governance On Value Creation In Entrepreneurial Firms, Wee Liang Tan, Teck Meng Tan
The Impact Of Corporate Governance On Value Creation In Entrepreneurial Firms, Wee Liang Tan, Teck Meng Tan
Research Collection Lee Kong Chian School Of Business
The compliance with codes of corporate governance has become the norm for listed firms all over the world. In most countries, entrepreneurial firms do not have to comply with such codes but it has been argued that such codes should also apply to these small medium enterprises (SMEs). Since corporate governance forms the environment for the internal activities of a company and appropriate environmental conditions are crucial for corporate entrepreneurship to flourish in a company, it is apt that these two topics be discussed in relation with each other. Corporate governance mechanisms may dampen value creation in firms if appropriate …
How Do Institutional Investors Trade, Paul G. J. O'Connell, Melvyn Teo
How Do Institutional Investors Trade, Paul G. J. O'Connell, Melvyn Teo
Research Collection Lee Kong Chian School Of Business
Using a novel and detailed custody trades dataset, this paper analyzes the trading behavior of institutions. Extant studies have examined the effects of past performance on trading by retail investors, day traders, and futures floor traders. Yet very little work has been done on institutions. We find that unlike other investors, institutions take on more risk following an increase in net profit and loss. However, the responses to a gain and loss are highly asymmetric. Institutions aggressively reduce risk in the wake of losses, but only mildly increase risk in the wake of gains. This asymmetry is more pronounced for …
What Do Self And Peer Ratings Really Measure?, Gary J. Greguras, Chet Robie, Robert J. Koenigs, Marise Born
What Do Self And Peer Ratings Really Measure?, Gary J. Greguras, Chet Robie, Robert J. Koenigs, Marise Born
Research Collection Lee Kong Chian School Of Business
No abstract provided.
Packet-Loss Resilient Coding Scheme With Only Xor Operations, Gui Liang Feng, Robert H. Deng, Feng Bao
Packet-Loss Resilient Coding Scheme With Only Xor Operations, Gui Liang Feng, Robert H. Deng, Feng Bao
Research Collection School Of Computing and Information Systems
Application of forward error correction to recover lost packets in higher layers of communication networks is receiving increasing attention. Most of the previous proposals for packet loss recovery use symbol-oriented Reed-Solomon codes operating in symbol erasure-correction mode. A Reed-Solomon code is optimal in the sense that it is maximal distance separable; however, the decoding speed of a Reed-Solomon code is slow since it involves operations over GF(2m) using lookup tables. A packet-oriented (n, k)/(m, l) packet-loss resilient code based on an (n, k) Reed-Solomon code over GF(2m) is given. The code accepts k-packet information sequences and encodes them into n-packet …
A Simple Solution To The Surprise Exam Paradoxes, John N. Williams
A Simple Solution To The Surprise Exam Paradoxes, John N. Williams
Research Collection School of Social Sciences
No abstract provided.
Graph Based Image Matching, Hui Jiang, Chong-Wah Ngo
Graph Based Image Matching, Hui Jiang, Chong-Wah Ngo
Research Collection School Of Computing and Information Systems
Given two or more images, we can define different but related problems on pattern matching such as image registration, pattern detection and localization, and common pattern discovery. These problems have different levels of purpose and difficulties, as a result, often associate with different solutions. In this paper, we propose a novel approach to solve these problems under a unified framework based on graph matching. We first split the images into small blocks and represent each block as a node in a bipartite graph. A maximum weighted bipartite graph matching algorithm is then employed in an iterative way to find the …
Novel Seed Selection For Multiple Objects Detection And Tracking, Zailiang Pan, Chong-Wah Ngo
Novel Seed Selection For Multiple Objects Detection And Tracking, Zailiang Pan, Chong-Wah Ngo
Research Collection School Of Computing and Information Systems
This paper proposes a unified approach for initializing, detecting and tracking of multiple moving objects. Object initialization is achieved through novel seed selection which is adaptively activated, depending on the quality of tracking, to select the best possible frames along the temporal direction for object detection. EM algorithm is then employed to robustly segment and detect multiple objects in a selected frame. Each detected object is represented by an appearance-based model and mean shift tracking procedure is adopted to rapidly and effectively track the target objects.
High Accuracy Classification Of Eeg Signal, Wenjie Xu, Cuitai Guan, Chng Eng Siong, S. Ranganatha, Manoj Thulasidas, Jiankang Wu
High Accuracy Classification Of Eeg Signal, Wenjie Xu, Cuitai Guan, Chng Eng Siong, S. Ranganatha, Manoj Thulasidas, Jiankang Wu
Research Collection School Of Computing and Information Systems
Improving classification accuracy is a key issue to advancing brain computer interface (BCI) research from laboratory to real world applications. This article presents a high accuracy EEC signal classification method using single trial EEC signal to detect left and right finger movement. We apply an optimal temporal filter to remove irrelevant signal and subsequently extract key features from spatial patterns of EEG signal to perform classification. Specifically, the proposed method transforms the original EEG signal into a spatial pattern and applies the RBF feature selection method to generate robust feature. Classification is performed by the SVM and our experimental result …
Investigating Deception In Cyberspace, Holtjona Galanxhi, Fiona Fui-Hoon Nah
Investigating Deception In Cyberspace, Holtjona Galanxhi, Fiona Fui-Hoon Nah
Research Collection School Of Computing and Information Systems
The use of anthropomorphic avatars provides Internet users the opportunity and freedom to present their desired identity. As cyberspace becomes a heaven for deceptive behavior, human-computer interaction research will need to be carried out to study and understand these deceptive behaviors. The objective of this research is to investigate the behavior of deceivers and truthtellers in the cyberspace environment and to examine how their intention to deceive may influence the choice of their avatars. The effect of using avatars to support communication will also be studied. This research provides insights on communication and trust issues in avatar environments.
Theoretical And Practical Complexity Of Uml, J. Erickson, Keng Siau
Theoretical And Practical Complexity Of Uml, J. Erickson, Keng Siau
Research Collection School Of Computing and Information Systems
Systems have become increasingly complex, and as a result development methods have become more complex as well. The unified modeling language (UML) has been criticized for the often cited and sometimes over-whelming complexity it presents to its users, and those seeking to learn to use it. Using Rossi and Brinkkemper’s (1996) complexity metrics, Siau and Cao (2001) completed a complexity analysis of UML and 36 other modeling techniques, finding that UML is indeed more complex than other techniques. Siau, Erickson and Lee (2002) proposed that Rossi and Brinkkemper’s metrics present the theoretical maximum complexity, known as theoretical complexity. This is …
Exploiting Information Theory For Adaptive Mobility And Resource Management In Future Cellular Networks, Abhishek Roy, Sajal K. Das, Archan Misra
Exploiting Information Theory For Adaptive Mobility And Resource Management In Future Cellular Networks, Abhishek Roy, Sajal K. Das, Archan Misra
Research Collection School Of Computing and Information Systems
We utilize tools from information theory to develop adaptive algorithms for two key problems in cellular networks: location tracking and resource management. The use of information theory is motivated by the fundamental observation that overheads in many aspects of mobile computing can be traced to the randomness or uncertainty in an individual user's movement behavior. We present a model-independent information-theoretic approach for estimating and managing this uncertainty, and relate it to the entropy or information content of the user's movement process. Information-theoretic mobility management algorithms are very simple, yet reduce overhead by ∼80 percent in simulated scenarios by optimally adapting …
Sa&D And Database: Should We Be Researching What We Are Teaching?, Jeffrey B. Parson, Akhilesh. Bajaj, Dinesh Batra, Alan Hevner, Keng Siau
Sa&D And Database: Should We Be Researching What We Are Teaching?, Jeffrey B. Parson, Akhilesh. Bajaj, Dinesh Batra, Alan Hevner, Keng Siau
Research Collection School Of Computing and Information Systems
The panel will examine the reasons for the mismatch between SA&D and database teaching and research. The implication of this mismatch on the MIS academic and practitioner communities will also be discussed and debated.
Ltam: A Location-Temporal Authorization Model, Hai Yu, Ee Peng Lim
Ltam: A Location-Temporal Authorization Model, Hai Yu, Ee Peng Lim
Research Collection School Of Computing and Information Systems
This paper describes an authorization model for specifying access privileges of users who make requests to access a set of locations in a building or more generally a physical or virtual infrastructure. In the model, primitive locations can be grouped into composite locations and the connectivities among locations are represented in a multilevel location graph. Authorizations are defined with temporal constraints on the time to enter and leave a location and constraints on the number of times users can access a location. Access control enforcement is conducted by monitoring user movement and checking access requests against an authorization database. The …
Board Structure, Political Influence And Firm Performance - An Empirical Study On Publicly Listed Firms In China, Dongping Han, Fusheng Wang, Heng Yue
Board Structure, Political Influence And Firm Performance - An Empirical Study On Publicly Listed Firms In China, Dongping Han, Fusheng Wang, Heng Yue
Research Collection School Of Accountancy
The board of directors is the cornerstone of any effective corporate governance system. A well-structured board can effectively monitor and motivate management of a company for the benefit of the company's shareholders. This paper investigates the relationship between board structure and firm performance using a sample of 490 publicly listed firms in China. The characteristics of board structure we examined include: board size, inside/outside/independent directors, CEO/Chair duality, stock holdings of directors, the rewards to directors and aged directors. We find significant relationship between firm performance and three characteristics: the rewards to director, the stock holdings of directors and the existence …
The Optimal Design Of Fallible Organizations: Invariance Of Optimal Decision Criterion And Uniqueness Of Hierarchy And Polyarchy Structures, Winston T. H. Koh
The Optimal Design Of Fallible Organizations: Invariance Of Optimal Decision Criterion And Uniqueness Of Hierarchy And Polyarchy Structures, Winston T. H. Koh
Research Collection School Of Economics
We present a general framework to study the project selection problem in an organization of fallible decision-makers. We show that when the organizational size and the majority rule for project acceptance are optimized simultaneously, the optimal quality of decision-making, as determined by the decision criterion, is invariant, and depends only on the expertise of decision-makers. This result clarifies that the circumstances under which the decision-making quality varies with the organizational structure are situations where the organizational size or majority rule is restricted from reaching the optimal level. Moreover, in contrast to earlier findings in the literature that the hierarchy and …
The Politics Of Wto Enforcement Mechanism, Pao Li Chang
The Politics Of Wto Enforcement Mechanism, Pao Li Chang
Research Collection School Of Economics
This paper attempts to develop a formal economic framework to analyze the influences of domestic political considerations by democratic governments in shaping the WTO enforcement outcomes following a violation ruling against the defendant. Since a different mix of import and export sectors in the defendant and complainant country will benefit from the various potential enforcement outcomes, they become competing forces which steer the strategic interactions between the disputing governments. The results of the paper illustrate the complainant's strategy in selecting the retaliation list, and the likelihood of the defendant's compliance or compensation in response to the proposed or foreseeable retaliation, …
Values Of Mobile Technology In Education, Fiona Fui-Hoon Nah, Keng Siau, H. Sheng
Values Of Mobile Technology In Education, Fiona Fui-Hoon Nah, Keng Siau, H. Sheng
Research Collection School Of Computing and Information Systems
Mobile technology shows promise in supporting and improving education and its delivery. Coupled with the use of mobile devices and software/hardware solutions that make it possible to access educational content, students can be exposed to new educational experience. Applications of mobile technology in education can provide many benefits including greater flexibility, more available education resources, as well as greater convenience, accessibility and responsiveness. As a new phenomenon that will be widely used and adopted in the years to come, the values of mobile technology in education should be better understood and researched. This research outlines our empirical study to examine …