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Articles 6991 - 7020 of 8681
Full-Text Articles in Entire DC Network
Recent Developments In Common Intention: Lee Chez Kee V Pp [2008] 3 Slr 447 [Case Note], Nathaniel Yong Ern Khng, Siyuan Chen
Recent Developments In Common Intention: Lee Chez Kee V Pp [2008] 3 Slr 447 [Case Note], Nathaniel Yong Ern Khng, Siyuan Chen
Research Collection Yong Pung How School Of Law
The Court of Appeal recently delivered an important judgment on liability for common intention. This criminal law doctrine has demanded clarification for some time, especially in regards to what is commonly known as “twin crime” situations, ie, situations where there is a primary criminal act as well as a collateral criminal act incidental to the main goal of the participants to the primary crime. In the “twin crime” situation, the participants would have intended to commit the primary criminal act but not all would have shared in the intention of one or more unidentified members of the group to also …
‘Void Contracts And The Applicability Of Choice Of Law Clauses To Consequential Restitutionary Claims: Cimb V Dresdner Kleinwort Ltd [2008] 4 Slr 543, Swee Ling Adeline Chong
‘Void Contracts And The Applicability Of Choice Of Law Clauses To Consequential Restitutionary Claims: Cimb V Dresdner Kleinwort Ltd [2008] 4 Slr 543, Swee Ling Adeline Chong
Research Collection Yong Pung How School Of Law
This note examines the Singapore Court of Appeal’s judgment in CIMB Bank Bhd v Dresdner Kleinwort Ltd, focusing specifically on what role, if any, should be played by a choice of law clause contained in a void contract in relation to the restitutionary aftermath of voidness.
The Geography Of Hedge Funds, Melvyn Teo
The Geography Of Hedge Funds, Melvyn Teo
Research Collection Lee Kong Chian School Of Business
This article analyzes the relationship between the risk-adjusted performance of hedge funds and their proximity to investments using data on Asia-focused hedge funds. I find, relative to an augmented Fung and Hsieh (2004) factor model, that hedge funds with a physical presence (head or research office) in their investment region outperform other hedge funds by 3.72% per year. The local information advantage is pervasive across all major geographical regions, but is strongest for emerging market funds and funds holding illiquid securities. These results are robust to adjustments for fund fees, serial correlation, backfill bias, and incubation bias. I show also …
Crisis Leadership: When Should The Ceo Step Up?, Marela Lucero, Alywin Teng Kwang Tan, Augustine Pang
Crisis Leadership: When Should The Ceo Step Up?, Marela Lucero, Alywin Teng Kwang Tan, Augustine Pang
Research Collection Lee Kong Chian School Of Business
Purpose – One explicit leadership role the chief executive officer (CEO) can play during crisis is to assume the role of being the organization's spokesperson. What remains unclear is at what point of the crisis should the CEO step up and how does that impact crisis communication? The purpose of this paper is to examine this question. Design/methodology/approach – The meta-analysis method is used to combine different data in various studies of one topic into one comprehensive study. More than 30 crises are meta-analyzed. Findings – The CEO needs to step up to revise earlier statements or when the integrity …
Are Male And Female Avatars Perceived Equally In 3-D Virtual Worlds?, David Dewester, Fiona Fui-Hoon Nah, Sarah Gervais, Keng Siau
Are Male And Female Avatars Perceived Equally In 3-D Virtual Worlds?, David Dewester, Fiona Fui-Hoon Nah, Sarah Gervais, Keng Siau
Research Collection School Of Computing and Information Systems
Virtual worlds are three-dimensional, computer-generated worlds in which users take the form of avatars and use those avatars to interact with objects and other avatars in the virtual world. Virtual worlds are growing in importance in both educational institutions and businesses. Educational institutions have adopted virtual worlds as a medium for instructional delivery whereas businesses are using virtual worlds for recruitment, training, collaboration, and marketing. Given these emerging phenomena, a better understanding of behavioral and perceptual issues in virtual worlds is warranted. We propose a research model to study the interaction effects of gender stereotypicality of male and female avatars …
Data Mining For Software Engineering, Tao Xie, Suresh Thummalapenta, David Lo, Chao Liu
Data Mining For Software Engineering, Tao Xie, Suresh Thummalapenta, David Lo, Chao Liu
Research Collection School Of Computing and Information Systems
To improve software productivity and quality, software engineers are increasingly applying data mining algorithms to various software engineering tasks. However, mining SE data poses several challenges. The authors present various algorithms to effectively mine sequences, graphs, and text from such data.
On Efficient Mutual Nearest Neighbor Query Processing In Spatial Databases, Yunjun Gao, Baihua Zheng, Gencai Chen, Qing Li
On Efficient Mutual Nearest Neighbor Query Processing In Spatial Databases, Yunjun Gao, Baihua Zheng, Gencai Chen, Qing Li
Research Collection School Of Computing and Information Systems
This paper studies a new form of nearest neighbor queries in spatial databases, namely, mutual nearest neighbour (MNN) search. Given a set D of objects and a query object q, an MNN query returns from D, the set of objects that are among the k1 (≥ 1) nearest neighbors (NNs) of q; meanwhile, have q as one of their k2(≥ 1) NNs. Although MNN queries are useful in many applications involving decision making, data mining, and pattern recognition, it cannot be efficiently handled by existing spatial query processing approaches. In this paper, we present …
A Fair Assignment Algorithm For Multiple Preference Queries, Leong Hou U, Nikos Mamoulis, Kyriakos Mouratidis
A Fair Assignment Algorithm For Multiple Preference Queries, Leong Hou U, Nikos Mamoulis, Kyriakos Mouratidis
Research Collection School Of Computing and Information Systems
Consider an internship assignment system, where at the end of each academic year, interested university students search and apply for available positions, based on their preferences (e.g., nature of the job, salary, office location, etc). In a variety of facility, task or position assignment contexts, users have personal preferences expressed by different weights on the attributes of the searched objects. Although individual preference queries can be evaluated by selecting the object in the database with the highest aggregate score, in the case of multiple simultaneous requests, a single object cannot be assigned to more than one users. The challenge is …
Plus Ça Change: Innovation And The Spirit Of Enterprise In Tocqueville’S America, Christine Dunn Henderson
Plus Ça Change: Innovation And The Spirit Of Enterprise In Tocqueville’S America, Christine Dunn Henderson
Research Collection School of Social Sciences
Tocqueville describes the spirit of enterprise—along with the taste for material well-being—as “the distinctive characteristic” of the American people. This paper explores the American spirit of innovation and enterprise, beginning with the centrality of this spirit for America's commercial greatness. Tocqueville observes that the taste for innovation is a part of American national character, and its roots can be traced to the equality of conditions which characterizes democratic life. But the same equality of conditions which promotes the spirit of innovation also can also threaten it, for equality of conditions paradoxically encourages individuals both to rely upon their own judgment …
Optimal-Location-Selection Query Processing In Spatial Databases, Yunjun Gao, Baihua Zheng, Gencai Chen, Qing Li
Optimal-Location-Selection Query Processing In Spatial Databases, Yunjun Gao, Baihua Zheng, Gencai Chen, Qing Li
Research Collection School Of Computing and Information Systems
This paper introduces and solves a novel type of spatial queries, namely, Optimal-Location-Selection (OLS) search, which has many applications in real life. Given a data object set D_A, a target object set D_B, a spatial region R, and a critical distance d_c in a multidimensional space, an OLS query retrieves those target objects in D_B that are outside R but have maximal optimality. Here, the optimality of a target object b \in D_B located outside R is defined as the number of the data objects from D_A that are inside R and meanwhile have their distances to b not exceeding …
Heterogeneity In Returns To Work Experience: A Dynamic Model Of Female Labor Force Participation, Ken Yamada
Heterogeneity In Returns To Work Experience: A Dynamic Model Of Female Labor Force Participation, Ken Yamada
Research Collection School Of Economics
This paper provides structural estimates of heterogeneous returns to work experience for Japanese married women. A dynamic model of labor force participation is used to account for dynamic selfselection into employment. Heterogeneity is incorporated into the model in a way that allows for the multidimensional skill heterogeneity in employment and home production and for the individual-specific slope and curvature of experience effect on earnings. The structural estimates and their comparison to the reduced-form estimates highlight the importance of dynamic self-selection into employment and heterogeneity in returns to work experience.
Power Maximization And Size Control In Heteroskedasticity And Autocorrelation Robust Tests With Exponentiated Kernels, Yixiao Sun, Peter C. B. Phillips, Sainan Jin
Power Maximization And Size Control In Heteroskedasticity And Autocorrelation Robust Tests With Exponentiated Kernels, Yixiao Sun, Peter C. B. Phillips, Sainan Jin
Research Collection School Of Economics
Using the power kernels of Phillips, Sun and Jin (2006, 2007), we examine the large sample asymptotic properties of the t-test for different choices of power parameter (rho). We show that the nonstandard fixed-rho limit distributions of the t-statistic provide more accurate approximations to the finite sample distributions than the conventional large-rho limit distribution. We prove that the second-order corrected critical value based on an asymptotic expansion of the nonstandard limit distribution is also second-order correct under the large-rho asymptotics. As a further contribution, we propose a new practical procedure for selecting the test-optimal power parameter that addresses the central …
Subnational Credit Rating: A Comparative Review, Lili Liu, Kim Song Tan
Subnational Credit Rating: A Comparative Review, Lili Liu, Kim Song Tan
Research Collection School Of Economics
This paper surveys methodological issues in subnational credit ratings and highlights key challenges for developing countries. Subnational borrowing from capital markets has been on the rise owing to fiscal decentralization and demand for infrastructure investments. A prerequisite for accessing capital markets, subnational credit ratings have also emerged as a part of broader reform for fiscal sustainability. They facilitate a more transparent budgetary and financial management system. The global financial crisis makes subnational credit ratings more relevant, as they contribute to fiscal risk evaluations and fiscal adjustment. In addition to subnationals’ own credit strength, the creditworthiness of the sovereign and the …
Scalable Verification For Outsourced Dynamic Databases, Hwee Hwa Pang, Jilian Zhang, Kyriakos Mouratidis
Scalable Verification For Outsourced Dynamic Databases, Hwee Hwa Pang, Jilian Zhang, Kyriakos Mouratidis
Research Collection School Of Computing and Information Systems
Query answers from servers operated by third parties need to be verified, as the third parties may not be trusted or their servers may be compromised. Most of the existing authentication methods construct validity proofs based on the Merkle hash tree (MHT). The MHT, however, imposes severe concurrency constraints that slow down data updates. We introduce a protocol, built upon signature aggregation, for checking the authenticity, completeness and freshness of query answers. The protocol offers the important property of allowing new data to be disseminated immediately, while ensuring that outdated values beyond a pre-set age can be detected. We also …
Game Action Based Power Management For Multiplayer Online Game, Bhojan Anand, A. L. Ananda, Mun Choon Chan, Long Thanh Le, Rajesh Krishna Balan
Game Action Based Power Management For Multiplayer Online Game, Bhojan Anand, A. L. Ananda, Mun Choon Chan, Long Thanh Le, Rajesh Krishna Balan
Research Collection School Of Computing and Information Systems
Current mobile devices embrace a wide range of functionalities including high speed network support, hardware accelerated 3D graphics, and multimedia capabilities. These capabilities have boosted the interest for enabling multiplayer online games (MOG) support on such devices. However, the lack of similar growth in battery technology limits the usability of these devices for MOGs. In this paper, we present energy conservation techniques for highly interactive MOGs. These are games, such as first-person shooters, where crisp user interaction is paramount to the overall game experience. Hence, conserving energy while preserving crisp user interaction becomes a critical consideration in this domain. We …
The Influence Of Work Personality On Job Satisfaction: Incremental Validity And Mediation Effects, Daniel Heller, D. Lance Ferris, Douglas Brown, David Watson
The Influence Of Work Personality On Job Satisfaction: Incremental Validity And Mediation Effects, Daniel Heller, D. Lance Ferris, Douglas Brown, David Watson
Research Collection Lee Kong Chian School Of Business
Drawing from recent developments regarding the contextual nature of personality (e.g., D. Wood & B. W. Roberts, 2006), we conducted 2 studies (1 cross-sectional and 1 longitudinal over 1 year) to examine the validity of work personality in predicting job satisfaction and its mediation of the effect of global personality on job satisfaction. Study 1 showed that (a) individuals vary systematically in their personality between roles— they were significantly more conscientious and open to experience and less extraverted at work compared to at home; (b) work personality was a better predictor of job satisfaction than both global personality and home …
Formal Verification Of Scalable Nonzero Indicators, Jun Sun, Yang Liu, Jun Sun, Jin Song Dong, Wei Chen, Yanhong A. Liu
Formal Verification Of Scalable Nonzero Indicators, Jun Sun, Yang Liu, Jun Sun, Jin Song Dong, Wei Chen, Yanhong A. Liu
Research Collection School Of Computing and Information Systems
Concurrent algorithms are notoriously difficult to design correctly, and high performance algorithms that make little or no use of locks even more so. In this paper, we describe a formal verification of a recent concurrent data structure Scalable NonZero Indicators. The algorithm supports incrementing, decrementing, and querying the shared counter in an efficient and linearizable way without blocking. The algorithm is highly non-trivial and it is challenging to prove the correctness. We have proved that the algorithm satisfies linearizability, by showing a trace refinement relation from the concrete implementation to its abstract specification. These models are specified in CSP and …
Penny For Your Pint: The Tricky Art Of Buying Kindness, Knowledge@Smu
Penny For Your Pint: The Tricky Art Of Buying Kindness, Knowledge@Smu
Knowledge@SMU
Do material incentives influence blood donations? A commonly held view is that people donate their blood out of a pro-social motivation. But not everyone is willing to offer their blood for nothing. Material incentives might persuade some to step forward, yet they could very well alienate those who believe that such acts must not be motivated by selfish gains. Indeed, blood banks thread a fine line between motivating the ‘selfish’ and pandering to the ‘selfless’. Economist Alois Stutzer shares the results of a field experiment involving more than 10,000 potential blood donors with Singapore Management University.
Emperors And Their John Waynes: Business Strategy, Inspired By The Wild Wild West!, Knowledge@Smu
Emperors And Their John Waynes: Business Strategy, Inspired By The Wild Wild West!, Knowledge@Smu
Knowledge@SMU
Large swathes of the Southeast Asian economies have been dominated by some forty Overseas Chinese families. What makes them tick, what are their management philosophies, what are their strategies and how do they view and face up to the business challenges today and tomorrow? George Haley, Usha Haley and Tan Chin Tiong sets to answer these questions and more in their latest collaboration “New Asian Emperors: The Business Strategies of the Overseas Chinese.”
Large-Scale Near-Duplicate Web Video Search: Challenge And Opportunity, Wan-Lei Zhao, Song Tan, Chong-Wah Ngo
Large-Scale Near-Duplicate Web Video Search: Challenge And Opportunity, Wan-Lei Zhao, Song Tan, Chong-Wah Ngo
Research Collection School Of Computing and Information Systems
The massive amount of near-duplicate and duplicate web videos has presented both challenge and opportunity to multimedia computing. On one hand, browsing videos on Internet becomes highly inefficient for the need to repeatedly fast-forward videos of similar content. On the other hand, the tremendous amount of somewhat duplicate content also makes some traditionally difficult vision tasks become simple and easy. For example, annotating pictures can be as simple as recycling the tags of Internet images retrieved from image search engines. Such tasks, of either to eliminate or to recycle near-duplicates, can usually be achieved by the nearest neighbor search of …
Efficient Non-Interactive Range Proof, Tsz Hon Yuen, Qiong Huang, Yi Mu, Willy Susilo, Duncan S. Wong, Guomin Yang
Efficient Non-Interactive Range Proof, Tsz Hon Yuen, Qiong Huang, Yi Mu, Willy Susilo, Duncan S. Wong, Guomin Yang
Research Collection School Of Computing and Information Systems
We propose the first constant size non-interactive range proof which is not based on the heuristic Fiat-Shamir transformation and whose security does not rely on the random oracle assumption. The proof consists of a constant number of group elements. Compared with the most efficient constant-size range proof available in the literature, our scheme has significantly reduced the proof size. We showed that our scheme achieves perfect completeness, perfect soundness and composable zero-knowledge under a conventional number-theoretic assumption, namely the Subgroup Decision Problem.
A Missing Part In International Investment Law: The Effectiveness Of Investment Protection Of Taiwan's Bits Vis-À-Vis Asean States, Han-Wei Liu
Research Collection Yong Pung How School Of Law
Taiwan, classified as an “unrecognized state” or an “entity sui generis” by most international law scholars, has been excluded from most major international organizations and agreements for decades. This diplomatic isolation has had a negative influence on the protection of Taiwan’s overseas investments. This Article explores the six bilateral investment treaties (“BITs”) that the Taiwanese government has reached with the Association of Southeast Asian Nations (“ASEAN”) States and compares the weaknesses of the Taiwanese agreements with the investment frameworks established within ASEAN States. This Article concludes that Taiwan’s BITs with six ASEAN Member States fail to serve the very aim …
From Clampdown To Limited Empowerment: Hard And Soft Law In The Calibration And Regulation Of Religious Conduct In Singapore, Tan K. B. Eugene
From Clampdown To Limited Empowerment: Hard And Soft Law In The Calibration And Regulation Of Religious Conduct In Singapore, Tan K. B. Eugene
Research Collection Yong Pung How School Of Law
The focus of Singapore's response to terrorism post 9/11 has been to reach out to the “moderate, mainstream” Muslims as a bulwark against societal implosion. This article examines the broad-based endeavor toward “religious moderation.” While coercive draconian legislation remain the mainstay against extremists and radicals, the mobilization of soft law, aspirational norms, and values are consciously woven into the state's endeavors to enhance society's resilience and cohesion. They also seek to regulate religious conduct at a time when the state wishes to entrench secularism as a cornerstone of the governance of a multi-racial, multireligious society. Rights and regulation are not …
Verification Of Population Ring Protocols In Pat, Yang Liu, Jun Pang, Jun Sun, Jianhua Zhao
Verification Of Population Ring Protocols In Pat, Yang Liu, Jun Pang, Jun Sun, Jianhua Zhao
Research Collection School Of Computing and Information Systems
The population protocol model has emerged as an elegant paradigm for describing mobile ad hoc networks, consisting of a number of nodes that interact with each other to carry out a computation. One essential property of self-stabilizing population protocols is that all nodes must eventually converge to the correct output value, with respect to all possible initial configurations. It has been shown that fairness constraints play a crucial role in designing population protocols. The Process Analysis Toolkit (PAT) has been developed to perform verifications under different fairness constraints efficiently. In particular, it can handle global fairness, which is required for …
Active Learning For Causal Bayesian Network Structure With Non-Symmetrical Entropy, Li G., Tze-Yun Leong
Active Learning For Causal Bayesian Network Structure With Non-Symmetrical Entropy, Li G., Tze-Yun Leong
Research Collection School Of Computing and Information Systems
Causal knowledge is crucial for facilitating comprehension, diagnosis, prediction, and control in automated reasoning. Active learning in causal Bayesian networks involves interventions by manipulating specific variables, and observing the patterns of change over other variables to derive causal knowledge. In this paper, we propose a new active learning approach that supports interventions with node selection. Our method admits a node selection criterion based on non-symmetrical entropy from the current data and a stop criterion based on structure entropy of the resulting networks. We examine the technical challenges and practical issues involved. Experimental results on a set of benchmark Bayesian networks …
On The Effectiveness Of Software Diversity: A Systematic Study On Real-World Vulnerabilities, Jin Han, Debin Gao, Robert H. Deng
On The Effectiveness Of Software Diversity: A Systematic Study On Real-World Vulnerabilities, Jin Han, Debin Gao, Robert H. Deng
Research Collection School Of Computing and Information Systems
Many systems have been introduced to detect software intrusions by comparing the outputs and behavior of diverse replicas when they are processing the same, potentially malicious, input. When these replicas are constructed using off-the-shelf software products, it is assumed that they are diverse and not compromised simultaneously under the same attack. In this paper, we analyze vulnerabilities published in 2007 to evaluate the extent to which this assumption is valid. We focus on vulnerabilities in application software, and show that the majority of these software products --- including those providing the same service (and therefore multiple software substitutes can be …
Leak-Free Mediated Group Signatures, Xuhua Ding, Gene Tsudik, Shouhuai Xu
Leak-Free Mediated Group Signatures, Xuhua Ding, Gene Tsudik, Shouhuai Xu
Research Collection School Of Computing and Information Systems
Group signatures are a useful cryptographic construct for privacy-preserving non-repudiable authentication, and there have been many group signature schemes. In this paper, we introduce a variant of group signatures that offers two new security properties called leak-freedom and immediate-revocation. Intuitively, the former ensures that an insider (i.e., an authorized but malicious signer) be unable to convince an outsider (e.g., a signature receiver) that she indeed signed a certain message; whereas the latter ensures that the authorization for a user to issue group signatures can be immediately revoked whenever the need arises (temporarily or permanently). These properties are not offered in …
An Agent-Based Commodity Trading Simulation, Shih-Fen Cheng, Yee Pin Lim
An Agent-Based Commodity Trading Simulation, Shih-Fen Cheng, Yee Pin Lim
Research Collection School Of Computing and Information Systems
In this paper, an event-centric commodity trading simulation powered by the multiagent framework is presented. The purpose of this simulation platform is for training novice traders. The simulation is progressed by announcing news events that affect various aspects of the commodity supply chain. Upon receiving these events, market agents that play the roles of producers, consumers, and speculators would adjust their views on the market and act accordingly. Their actions would be based on their roles and also their private information, and collectively they shape the market dynamics. This simulation has been effectively deployed for several training sessions. We will …
From Crisis To Opportunity: Environmental Jolt, Corporate Acquisitions, And Firm Performance, William P. Wan, Daphne W. Yiu
From Crisis To Opportunity: Environmental Jolt, Corporate Acquisitions, And Firm Performance, William P. Wan, Daphne W. Yiu
Research Collection Lee Kong Chian School Of Business
This study incorporates the external environmental context into the study of corporate acquisitions by examining the performance implications of corporate acquisitions during an environmental jolt that alters the levels of environmental munificence. We posit that compared to the periods before and after an environmental jolt, corporate acquisitions during a jolt would be positively related to firm performance. Furthermore, we suggest that organizational slack would improve firm performance and accentuate the positive relationship between corporate acquisitions and firm performance during an environmental jolt; however, it would have negative impact on firm performance and make the acquisition-performance relationship more negative before and …
Identifying Bug Signatures Using Discriminative Graph Mining, Hong Cheng, David Lo, Yang Zhou, Xiaoyin Wang, Xifeng Yan
Identifying Bug Signatures Using Discriminative Graph Mining, Hong Cheng, David Lo, Yang Zhou, Xiaoyin Wang, Xifeng Yan
Research Collection School Of Computing and Information Systems
Bug localization has attracted a lot of attention recently. Most existing methods focus on pinpointing a single statement or function call which is very likely to contain bugs. Although such methods could be very accurate, it is usually very hard for developers to understand the context of the bug, given each bug location in isolation. In this study, we propose to model software executions with graphs at two levels of granularity: methods and basic blocks. An individual node represents a method or basic block and an edge represents a method call, method return or transition (at the method or basic …