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Cryptanalysis Of A Digital Signature Scheme On Id-Based Key-Sharing Infrastructures, Hongjun Wu, Feng Bao, Robert H. Deng Feb 2001

Cryptanalysis Of A Digital Signature Scheme On Id-Based Key-Sharing Infrastructures, Hongjun Wu, Feng Bao, Robert H. Deng

Research Collection School Of Computing and Information Systems

At ISW’99, Nishioka, Hanaoka and Imai proposed a digital signature scheme on ID-based key-sharing infrastructures. That signature scheme is claimed to be secure if the discrete logarithm problem is hard to solve. Two schemes (the ID-type and the random-type schemes) based on the linear scheme for the Key Predistribution Systems (KPS) and the discrete logarithm problem (DLP) were given. In this paper we show that those two schemes fail to meet the nonrepudiation requirement: with negligible amount of computation, a signature could be forged. For the ID-type signature scheme, any verifier could forge a signature to raise repudiation between that …

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Cryptanalysis Of Two Sparse Polynomial Based Public Key Cryptosystems, Feng Bao, Robert H. Deng, Willi Geiselmann, Claus Schnorr, Rainer Steinwandt, Hongjun Wu Feb 2001

Cryptanalysis Of Two Sparse Polynomial Based Public Key Cryptosystems, Feng Bao, Robert H. Deng, Willi Geiselmann, Claus Schnorr, Rainer Steinwandt, Hongjun Wu

Research Collection School Of Computing and Information Systems

The application of sparse polynomials in cryptography has been studied recently. A public key encryption scheme EnRoot [4] and an identification scheme SPIFI [1] based on sparse polynomials were proposed. In this paper, we show that both of them are insecure. The designers of SPIFI proposed the modified SPIFI [2] after Schnorr pointed out some weakness in its initial version. Unfortunately, the modified SPIFI is still insecure. The same holds for the generalization of EnRoot proposed in [2].

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Examining The Impact Of Destructive Acts In Marketing Channel Relationships, Jonathan D. Hibbard, Nirmalya Kumar, Lisa W. Stern Feb 2001

Examining The Impact Of Destructive Acts In Marketing Channel Relationships, Jonathan D. Hibbard, Nirmalya Kumar, Lisa W. Stern

Research Collection Lee Kong Chian School Of Business

In virtually all marketing channel relationships, one of the parties eventually will engage in an action that another channel member considers potentially destructive for the relationship. How a particular channel member reacts to such an act has implications for the long-term viability and success of the relationship. On the basis of a large data set collected from both a focal supplier and its independent dealers, the authors classify dealers' responses to a supplier's destructive acts by extending the response 'typology of exit, voice, and loyalty, which is based on Hirschman's seminal writings on responses to decline in organizations and states. …

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A Note On The Paper “Resource-Constrained Project Scheduling: Notation, Classification, Models And Methods” By Brucker Et Al., Willy Herroelen, Erik Demeulemeester, Bert De Reyck Feb 2001

A Note On The Paper “Resource-Constrained Project Scheduling: Notation, Classification, Models And Methods” By Brucker Et Al., Willy Herroelen, Erik Demeulemeester, Bert De Reyck

Research Collection Lee Kong Chian School Of Business

The great variety of project scheduling problems studied in the ever growing literature motivated the recent development of classification schemes. In a recent paper (European Journal of Operational Research 112 (1999) 3–41), Brucker et al. make the claim that, so far, no classification scheme exists which is compatible with what is commonly accepted in machine scheduling and introduce a new classification. In this note, we critically review major shortcomings of the suggested scheme which place heavy limitations on its potential use.

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China And The Globalization Of Ir Theory: Discussion Of 'Building International Relations Theory With Chinese Characteristics', William A. Callahan Feb 2001

China And The Globalization Of Ir Theory: Discussion Of 'Building International Relations Theory With Chinese Characteristics', William A. Callahan

Research Collection School of Social Sciences

This essay examines current developments in International Relations theory in China. First it comments on Song Xinning's essay, agreeing that IR theory in China is limited by ideology, the dominance of policy-oriented research, and the state. But rather than seeing culture ('IR theory with Chinese characteristics') as a problem that can be solved by a more scientific approach to IR theory, the essay argues that the scientism of realism and IPE has similar problems. Thus the essay switches from the universals of science to the contingency of interpretation to understand global politics, drawing on recent books which combine IPE with …

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Forecasting Volatility: Evidence From The German Stock Market, Hagen H. W. Bluhm, Jun Yu Feb 2001

Forecasting Volatility: Evidence From The German Stock Market, Hagen H. W. Bluhm, Jun Yu

Research Collection School Of Economics

In this paper we compare two basic approaches to forecast volatility in the German stock market. The first approach uses various univariate time series techniques while the second approach makes use of volatility implied in option prices. The time series models include the historical mean model, the exponentially weighted moving average (EWMA) model, four ARCH-type models and a stochastic volatility (SV) model. Based on the utilization of volatility forecasts in option pricing and Value-at-Risk (VaR), various forecast horizons and forecast error measurements are used to assess the ability of volatility forecasts. We show that the mode lrankings are sensitive to …

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Singapore Management University Report To Stakeholders 2001 - 2002, Singapore Management University Jan 2001

Singapore Management University Report To Stakeholders 2001 - 2002, Singapore Management University

Report to Stakeholders

If the first year of incorporation was the paving of the foundation for SMU, the second year was one of laying the first building blocks. For the university, this was a year for surging ahead – of exploration and adventure. With a sizeable student population, a faculty of international repute and two schools going on three, SMU is growing from strength to strength at an unbelievable rate. But beyond sheer numbers, I sense and see a spirit of fervour and adventure in the work of students, faculty and staff in every corner of this institution that we have founded. Our …

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Singapore Management University First Patron's Day -- President Sr Nathan Attends Lectures At Evans Road Campus, Singapore Management University Jan 2001

Singapore Management University First Patron's Day -- President Sr Nathan Attends Lectures At Evans Road Campus, Singapore Management University

SMU Press Releases and News

No abstract provided.

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Linguistic Gender Is Related To Psychological Gender: The Case Of Chinese Characters, Yuk-Yue Tong, Chi-Yue Chiu, Ho-Ying Fu Jan 2001

Linguistic Gender Is Related To Psychological Gender: The Case Of Chinese Characters, Yuk-Yue Tong, Chi-Yue Chiu, Ho-Ying Fu

Research Collection School of Social Sciences

Past research (Ervin, 1972; Konishi, 1993) suggests that a noun's linguistic gender is not just an arbitrary, semantically-empty linguistic category. Rather it may connote masculine or feminine properties, and thus can subtly influence responses to the noun and its referent. The present study extended this research by exploring how gendered radicals of nonsense Chinese characters might affect the characters' connotations. The results showed that when an unfamiliar Chinese character is encountered, meaning interpretation can be affected by the meaning of the radicals. Moreover, since gendered Chinese radicals are linked to share representations of psychological gender, such as representation may then …

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International Studies In The 21st Century: Civilization, Ethics And Transnational Relations, William A. Callahan Jan 2001

International Studies In The 21st Century: Civilization, Ethics And Transnational Relations, William A. Callahan

Research Collection School of Social Sciences

No abstract provided.

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Social Logic As Business Logic: Guanxi, Trustworthiness And The Embeddedness Of Chinese Business Practices, Wai Keung Chung, Gary Hamilton Jan 2001

Social Logic As Business Logic: Guanxi, Trustworthiness And The Embeddedness Of Chinese Business Practices, Wai Keung Chung, Gary Hamilton

Research Collection School of Social Sciences

This chapter explores the nature of Chinese business practices by looking at their social foundations. We argue that the use of an inter-subjective logic based on the norms of social relationships provides an institutional foundation for economic transactions in Chinese business settings. The logic of social relationships-or what we call guanxi logic-is embedded in daily practices of the Chinese business community. Rather than making economic decisions less "economic", relational rules embedded in guanxi places interpersonal business transactions within a prescriptive framework, thereby increasing the calculability of economic outcomes. Guanxi logic is, therefore, a socially meaningful way to enhance economic rationality. …

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Mentors Or Friends: Confucius And Aristotle On Equality And Ethical Development In Friendship, Sor-Hoon Tan Jan 2001

Mentors Or Friends: Confucius And Aristotle On Equality And Ethical Development In Friendship, Sor-Hoon Tan

Research Collection School of Social Sciences

In Thinking from the Han, David Hall and Roger Ames compare Plato's - and Confucius's views of friendship in relation to the question of transcendence and arrive at the sad conclusion that Socrates and Confucius could not be friends. "Socratic irony would not allow the inequality Confucius requires as a means of self-betterment. Confucius would not permit he and Socrates to hold all things in common." Along the way, they articulate an understanding of Confucius’ view of friendship as "a one-directional relationship in which one extends oneself by association with one who has attained a higher level of realization." Hall …

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Psychological Mechanisms Underlying Individual Knowledge And Contribution In Learning Organizations, Bin Zhao, Hwee Hoon Tan Jan 2001

Psychological Mechanisms Underlying Individual Knowledge And Contribution In Learning Organizations, Bin Zhao, Hwee Hoon Tan

Research Collection Lee Kong Chian School Of Business

Although much has been written about how to set up learning organizations, there is a paucity of research on understanding employees’ willingness to learn or contribute knowledge in such activities, a key element in the success of organizational learning. This paper presents models for understanding individuals’ willingness to learn and individuals’ willingness to contribute in organizational settings. Through the examination of the psychological mechanisms underlying individuals’ willingness to learn and to contribute, we will further our understanding on the individual and contextual factors that affect employees’ decision to learn and contribute in organizational learning activities. Drawing from the literature, we …

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On The Interaction Of Alphabetic And Logographic Words With Sounds And Images, Nader T. Tavassoli, Jin K. Han Jan 2001

On The Interaction Of Alphabetic And Logographic Words With Sounds And Images, Nader T. Tavassoli, Jin K. Han

Research Collection Lee Kong Chian School Of Business

It is well established that reading alphabetic words is dominated by phonological (sound-based) processes, whereas phonological processes do not appear to dominate the processing of Chinese logographs, where visual processes are more pronounced (for reviews, see Tavassoli, in press; Zhou & Marslen-Wilson, 1999). Most previous demonstrations of these linguistic differences have relied on low-level processes that potentially do not involve short-term memory. For example, they have attempted to assess differences in the speed (measured in milliseconds) by which phonological and semantic information get activated in the brain. Our research adds to a growing stream of consumer behavior research that has …

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Kindness In Cyberspace? The Sharing Of Valuable Goods Online, Sheen S. Levine Jan 2001

Kindness In Cyberspace? The Sharing Of Valuable Goods Online, Sheen S. Levine

Research Collection Lee Kong Chian School Of Business

No abstract provided.

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Networking Strategy Of Boards: Correlates, Performance Effects, And Implications For Small And Medium-Sized Enterprises, Gerard George, D. Robley Wood, Raihan Khan Jan 2001

Networking Strategy Of Boards: Correlates, Performance Effects, And Implications For Small And Medium-Sized Enterprises, Gerard George, D. Robley Wood, Raihan Khan

Research Collection Lee Kong Chian School Of Business

Development of linkages with the external environment, e.g. interlocks, is a mechanism to access scarce resources. Creating and maintaining these linkages may be an organizational capability that creates a competitive advantage for small and medium-sized enterprises (SMEs). A partial model of networking strategy is proposed, which includes measures of board composition, interlocks, entrepreneurial orientation and environmental hostility. Analysis of 70 community bank Chief Executive Officer (CEO) responses (58% response rate) lends support to the proposition that firms with a networking strategy performed better (higher return on assets (ROA) and higher return on expenditure (ROE)) than those firms that did not …

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Organizational Attractiveness For Prospective Applicants: A Person-Organisation Fit Perspective, Filip Lievens, Christoph Decaesteker, Pol Coetsier, Jo Geimaert Jan 2001

Organizational Attractiveness For Prospective Applicants: A Person-Organisation Fit Perspective, Filip Lievens, Christoph Decaesteker, Pol Coetsier, Jo Geimaert

Research Collection Lee Kong Chian School Of Business

This study investigates which of four objective organisational characteristics determine the attractiveness of organisations for prospective applicants and the degree to which the Big Five personality factors moderate the effects of some of these organisational attributes. To this end, 359 final-year students (engineering and business majors, 71% men, mean age = 22.4 years) read short descriptions of organisations. These descriptions varied on four organisational characteristics (i.e. organisation size, level of internationalisation, pay mix, and level of centralisation). The students had to indicate their attraction to the organisation. Additionally, they provided self-ratings on a personality inventory. The results show that prospective …

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Information And Communication Technology And Poverty: An Asian Perspective, M. G. Quibria, Feichin, Ted Tschang Jan 2001

Information And Communication Technology And Poverty: An Asian Perspective, M. G. Quibria, Feichin, Ted Tschang

Research Collection Lee Kong Chian School Of Business

Many commentators have extolled the virtues of new information and communication technologies (ICTs) in reducing poverty and improving the quality of life. While such arguments have been used before in relation to many predecessor technologies, including other earlier communications technologies, the promise has often floundered. This paper attempts to provide a more balanced analysis of the question, by exploring the linkages between the new ICTs and poverty reduction. It examines the linkages in two ways: the potential for direct impacts of ICTs on various areas of poverty and development, and the indirect impacts of ICTs on economic growth, exports and …

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Pricing Options Using Implied Trees, Kian Guan Lim, Da Zhi Jan 2001

Pricing Options Using Implied Trees, Kian Guan Lim, Da Zhi

Research Collection Lee Kong Chian School Of Business

No abstract provided.

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Probabilistic Principles In Unsupervised Learning Of Visual Structure: Human Data And A Model, Shimon Edelman, Benjamin P. Hiles, Hwajin Yang, Nathan Intrator Jan 2001

Probabilistic Principles In Unsupervised Learning Of Visual Structure: Human Data And A Model, Shimon Edelman, Benjamin P. Hiles, Hwajin Yang, Nathan Intrator

Research Collection School of Social Sciences

To find out how the representations of structured visual objects depend on the co-occurrence statistics of their constituents, we exposed subjects to a set of composite images with tight control exerted over (1) the conditional probabilities of the constituent fragments, and (2) the value of Barlow's criterion of "suspicious coincidence" (the ratio of joint probability to the product of marginals). We then compared the part verification response times for various probe/target combinations before and after the exposure. For composite probes, the speedup was much larger for targets that contained pairs of fragments perfectly predictive of each other, compared to those …

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Evaluating Hungary's Mixed-Member Electoral System, Kenneth Benoit Jan 2001

Evaluating Hungary's Mixed-Member Electoral System, Kenneth Benoit

Research Collection School of Social Sciences

The electoral system adopted by Hungary in 1989 represents a monument to the potential for institutional design through bargaining to produce complex yet stable institutions. The key compromise reached during this bargaining process was the decision to use a mixed-member system, electing a roughly even number of representatives from both majoritarian single-seat districts (SSDs) and from multi-seat, list proportional representation (PR) districts. This decision established Eastern Europe's first mixed-member electoral system, a format that was to become common in post-communist electoral systems. In its ten-year existence, Hungary's mixed-member system has operated in three elections and seen three different governments come …

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Simulation Methodologies For Political Scientists, Kenneth Benoit Jan 2001

Simulation Methodologies For Political Scientists, Kenneth Benoit

Research Collection School of Social Sciences

In this brief article I identify and characterize the variety of simulation methodologies relevant to political science research. Having identified them, I then recount a light-hearted tale of one successful application of a computer simulation to a real world problem of enormous significance. Extending the discussion to other examples, I discuss some of the main issues and benefits in simulation models for political science. Finally, I identify some software tools and additional resources for those who would like to learn more about using simulation methods for their own work.

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Education And Citizenship In Diverse Societies, Chandran Kukathas Jan 2001

Education And Citizenship In Diverse Societies, Chandran Kukathas

Research Collection School of Social Sciences

The question of the state's role in the control of sponsorship of education is addressed in the light of liberal political principles designed to keep peace and enforce toleration in culturally diverse societies. Some contemporary, self-described liberal philosophers argue for a much more substantial educational role for the state than liberal principles will really allow. Brian Barry's argument for that role assumes that the state can prescribe answers to controversial questions regarding the truth and the good life in which a truly liberal state would take no interest. Stephen Macedo is more accommodating to religious diversity than Barry, but his …

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Can A Liberal Society Tolerate Illiberal Elements?, Chandran Kukathas Jan 2001

Can A Liberal Society Tolerate Illiberal Elements?, Chandran Kukathas

Research Collection School of Social Sciences

Libertarians believe that all individuals are entitledto live as they choose, free from interference byother persons or by the state. They also believethat in the absence of such interference, whether bygovernment or other agents of the state intent ondesigning or planning for society as a whole, order willnonetheless prevail. Given the freedom to contract andexchange, markets will coordinate the production anddistribution of goods — and indeed do so better thanany other institution can.

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International Studies In The 21st Century: Civilization, Ethics And Transnational Relations, William A. Callahan Jan 2001

International Studies In The 21st Century: Civilization, Ethics And Transnational Relations, William A. Callahan

Research Collection School of Social Sciences

Since the end of the Cold War, the world has been reorganizing itself, moving away from the global issues to other forms of international politics. There has been a shift in the study of world politics as well. Some have tried to refashion Realism to again concentrate on nation-states in perpetual conflict.

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A Framework For Performance And Value Assessment Of E-Business Systems In Corporate Travel Distribution, A.M. Chircu, Robert J. Kauffman Jan 2001

A Framework For Performance And Value Assessment Of E-Business Systems In Corporate Travel Distribution, A.M. Chircu, Robert J. Kauffman

Research Collection School Of Computing and Information Systems

This chapter proposes and illustrates a framework that the authors call the value life cycle for e-commerce systems. Based on recent research results that relate to technology investments in the corporate travel industry and related theoretical and empirical perspectives, the authors lay out the corporate travel e-commerce system solutions value life cycle. The perspective involves estimating the maximum value that that an organization can obtain by implementing an e-commerce system in a specific industry and competitive environment. It also considers multiple factors that act as value contingencies for the implementation process. These create barriers to value accrual and to …

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Mediation In Practice: Common Law And Civil Law Perspectives Compared, Nadja Alexander Jan 2001

Mediation In Practice: Common Law And Civil Law Perspectives Compared, Nadja Alexander

Research Collection Yong Pung How School Of Law

Australian mediation practice is thriving. Effective forms of mediation are practised in court-connected schemes, in the public sector, in the community justice sector and in the private business sector. Indeed, no industry is excluded from the application of mediation. In contrast, Hoffmann-Riem laments that despite many years of discussions about ADR (alternative dispute resolution) in Germany, mediation plays a marginal role only. Further, Labes states that 'ADR mechanisms are relatively obscure methods in Germany.' The comparison between Australia and Germany is particularly interesting because it considers both a common law and a civil law tradition. This essay will discuss the …

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Synthesis In Trial Procedures? The Experience Of The International Criminal Tribunals, Mark Findlay Jan 2001

Synthesis In Trial Procedures? The Experience Of The International Criminal Tribunals, Mark Findlay

Research Collection Yong Pung How School Of Law

Critical to analysing the recent synthesis of criminal trialprocedures is an understanding of the internationalisation of criminal law andprocedure. As well as the creation of international tribunals to investigateand try crimes of world significance, there is emerging an internationaljurisprudence on criminal law (and procedural hybrids to support and developthis) which require integrated analysis.

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Regulation Of Religious Proselytism In The United States, Howard Hunter, Polly J. Price Jan 2001

Regulation Of Religious Proselytism In The United States, Howard Hunter, Polly J. Price

Research Collection Yong Pung How School Of Law

Howard Hunter and Polly Price examine the components of the US legal system that affect proselytism, focusing on the contradictions between the constitutional protection of religious freedom and legal constraints on proselytism. Hunter and Price comprehensively review the regulation of proselytism in both public and private spaces in the United States, analyze the justifications for these regulations, and suggest probable future issues of debate regarding religious freedom. Additionally, Hunter and Price argue that the regulation of proselytism has led to a failure to protect religious minorities, and in some cases contributed to their persecution.

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Gaming And Wagering Contracts, Boon Leong, Andrew Phang Jan 2001

Gaming And Wagering Contracts, Boon Leong, Andrew Phang

Research Collection Yong Pung How School Of Law

No abstract provided.

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