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Articles 22741 - 22770 of 23176
Full-Text Articles in Entire DC Network
Search For Cp Violation In The Decay Z → B B̄ G, Buskulic, D.; Et Al., M. Thulasidas
Search For Cp Violation In The Decay Z → B B̄ G, Buskulic, D.; Et Al., M. Thulasidas
Research Collection School Of Computing and Information Systems
About three million hadronic decays of the Z collected by ALEPH in the years 1991 to 1994 are used to search for anomalous CP violation beyond the Standard Model in the decay Z → bb̄g. The study is performed by analyzing angular correlations between the two quarks and the gluon in three-jet events and by measuring the differential two-jet rate. No signal of CP violation is found. For the combinations of anomalous CP violating couplings, ĥb = ĥAbgVh - ĥVbgAb and hb* = √ĥVb2 + ĥAb2, limits of | ĥb | b*
Mass Limit For The Standard Model Higgs Boson With The Full Lep I Aleph Data Sample, Buskulic, D.; Et Al., M. Thulasidas
Mass Limit For The Standard Model Higgs Boson With The Full Lep I Aleph Data Sample, Buskulic, D.; Et Al., M. Thulasidas
Research Collection School Of Computing and Information Systems
The reaction e+e− → HZ∗ is used to search for the standard model Higgs boson in the Hνν and the Hℓ+ℓ− channels. The data sample corresponds to about 4.5 million hadronic Z decays collected by the ALEPH experiment at LEP from 1989 to 1995 at centre-of-mass energies at and around the Z peak. Three candidate events are found in the Hμ+μ− channel, in agreement with the expected background from the electroweak process e+e− ℓ+ℓ−qq. This search results in a 95% C.L. lower limit on the Higgs boson mass of 63.9 GeV/c2.
On Integrating Existing Bibliographic Databases And Structured Databases, Ying Lu, Ee Peng Lim
On Integrating Existing Bibliographic Databases And Structured Databases, Ying Lu, Ee Peng Lim
Research Collection School Of Computing and Information Systems
It is widely accepted that future digital library applications have to be built upon different kinds of database servers to draw different forms of data from them. These data include bibliographic data, text data, multimedia data, and structured data. We address the problem of integrating existing bibliographic and structured databases which reside at different locations in the network. To integrate bibliographic data and structured data, we extended the well-known SQL model to represent bibliographic related attributes and queries. In particular, we have added a new data type to model attributes in the bibliographic database. We have also designed specialized predicates …
The New Law On Infringement Of Registered Trade Marks In The United Kingdom: Early Developments, David Llewelyn
The New Law On Infringement Of Registered Trade Marks In The United Kingdom: Early Developments, David Llewelyn
Research Collection Yong Pung How School Of Law
In this article the author considers the infringement provisions of the Trade Marks Act 1994 (UK) and a number of recent decisions in which they have been considered.
Measurement Of The Mass Of The Λb Baryon, Buskulic, D.; Et Al., M. Thulasidas
Measurement Of The Mass Of The Λb Baryon, Buskulic, D.; Et Al., M. Thulasidas
Research Collection School Of Computing and Information Systems
No abstract provided.
Challenges Of Global Economic Competition: The Singapore Response, Caroline Yeoh
Challenges Of Global Economic Competition: The Singapore Response, Caroline Yeoh
Research Collection Lee Kong Chian School Of Business
No abstract provided.
Concept Hierarchy Memory Model: A Neural Architecture For Conceptual Knowledge Representation, Learning, And Commonsense Reasoning, Ah-Hwee Tan, Hui-Shin Vivien Soon
Concept Hierarchy Memory Model: A Neural Architecture For Conceptual Knowledge Representation, Learning, And Commonsense Reasoning, Ah-Hwee Tan, Hui-Shin Vivien Soon
Research Collection School Of Computing and Information Systems
This article introduces a neural network based cognitive architecture termed Concept Hierarchy Memory Model (CHMM) for conceptual knowledge representation and commonsense reasoning. CHMM is composed of two subnetworks: a Concept Formation Network (CFN), that acquires concepts based on their sensory representations; and a Concept Hierarchy Network (CHN), that encodes hierarchical relationships between concepts. Based on Adaptive Resonance Associative Map (ARAM), a supervised Adaptive Resonance Theory (ART) model, CHMM provides a systematic treatment for concept formation and organization of a concept hierarchy. Specifically, a concept can be learned by sampling activities across multiple sensory fields. By chunking relations between concepts as …
Libsearch: A Window-Based Frontend To Remote Bibliographic Databases On The Internet, Ee Peng Lim, Soo-Yin Cheng
Libsearch: A Window-Based Frontend To Remote Bibliographic Databases On The Internet, Ee Peng Lim, Soo-Yin Cheng
Research Collection School Of Computing and Information Systems
Over the past several years, a number of wide-area information navigation and discovery tools have been introduced, including WAIS[1], Gopher[2], World-Wide Web[3], etc. In this paper, we describe a graphical query interface to remote bibliographic databases that can be found on the internet. A library query client, called LibSearch, has been designed and implemented using a set of APIs based on Z39.50 protocol standard[4]. Z39.50 is an application-layer protocol within the OSI reference model designed to allow library users to remotely access the bibliographic records in the library systems. As increasing number of OPAC systems are being established as Z39.50 …
Measurement Of Hadron And Lepton-Pair Production From E+E- Annihilation At Centre-Of-Mass Energies Of 130 And 136 Gev, Buskulic, D.; Et Al., M. Thulasidas
Measurement Of Hadron And Lepton-Pair Production From E+E- Annihilation At Centre-Of-Mass Energies Of 130 And 136 Gev, Buskulic, D.; Et Al., M. Thulasidas
Research Collection School Of Computing and Information Systems
No abstract provided.
The Notion Of Place In The Construction Of History, Nostalgia And Heritage In Singapore, Brenda S. A. Yeoh, Lily Kong
The Notion Of Place In The Construction Of History, Nostalgia And Heritage In Singapore, Brenda S. A. Yeoh, Lily Kong
Research Collection School of Social Sciences
In this paper, we investigate the links between place and time, and the intersections between the geographical imagination and the historical mind. These issues are explored in the context of Singapore by looking at the links between place and three concepts usually associated with the temporal sense - history, nostalgia and heritage. We argue that the two imaginations can be simultaneously engaged by means of a focus on the concept of place. The making of a place is closely intertwined with individual biographies and collective histories; at the same time, place does not record history in an unproblematic way. We …
Ideology, Social Commentary And Resistance In Popular Music: A Case Study Of Singapore, Phua Siew Chye, Lily Kong
Ideology, Social Commentary And Resistance In Popular Music: A Case Study Of Singapore, Phua Siew Chye, Lily Kong
Research Collection School of Social Sciences
Popular music as a site of struggles over meaning is focused upon, where the social and political relations between different groups in Singapore society are mirrored. How ruling elites and everyday people make use of the same cultural form--popular music--for different purposes is examined.
Specifying Object-Oriented Federated Database From Existing Databases, Ee Peng Lim, M. L. Lim, J. Srivastava
Specifying Object-Oriented Federated Database From Existing Databases, Ee Peng Lim, M. L. Lim, J. Srivastava
Research Collection School Of Computing and Information Systems
In this paper, we present a mapping strategy that is based on a proposed set of DB integration operations. We first define an OO federated DB as a virtual view on multiple OO export DBs. Our DB mapping strategy systematically derives each of the class extents, deep class extents and relationships of the federated DB using an operator tree consisting of the integration operations. This mapping approach differs from the other existing approaches in that it is algebraic based, and is therefore very suitable for implementing federated query processing.
On The Use Of The Complexity Index As A Measure Of Complexity In Activity Networks, Bert De Reyck, Willy Herroelen
On The Use Of The Complexity Index As A Measure Of Complexity In Activity Networks, Bert De Reyck, Willy Herroelen
Research Collection Lee Kong Chian School Of Business
A large number of optimal and suboptimal procedures have been developed for solving combinatorial problems modeled as activity networks. The need to differentiate between easy and hard problem instances and the interest in isolating the fundamental factors that determine the computing effort required by these procedures, inspired a number of researchers to develop various complexity measures. In this paper we investigate the relation between the hardness of a problem instance and the topological structure of its underlying network, as measured by the complexity index. We demonstrate through a series of experiments that the complexity index, defined as the minimum number …
Supporting Search For Reusable Software Objects, T. Isakowitz, Robert J. Kauffman
Supporting Search For Reusable Software Objects, T. Isakowitz, Robert J. Kauffman
Research Collection School Of Computing and Information Systems
Prior research has shown that achieving high levels of software reuse in the presence of repository and object-based computer-aided software engineering (CASE) development methods presents interesting human, managerial and technical challenges. This article presents research that seeks to enhanced software development performance through reuse. We propose automated support for developers who search large repositories for the appropriate reusable software objects. We characterize search for repository objects in terms of a multistage model involving screening, identification, and the subsequent choice between new object construction or reusable object implementation. We propose automated support tools, including ORCA, a software Object Reuse Classification Analyzer, …
Study Of The B0sb0s Oscillation Frequency Using D-S ℓ+ Combinations In Z Decays, Buskulic, D.; Et Al., M. Thulasidas
Study Of The B0sb0s Oscillation Frequency Using D-S ℓ+ Combinations In Z Decays, Buskulic, D.; Et Al., M. Thulasidas
Research Collection School Of Computing and Information Systems
A lower limit on the oscillation frequency of the B s 0 B s 0 system is obtained from approximately four million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1995. Leptons are combined with opposite sign D s − candidates reconstructed in seven different decay modes as evidence of semileptonic B s 0 decays. Criteria designed to ensure precise proper time reconstruction select 277D s − ℓ + combinations. The initial state of these B s 0 candidates is determined using an algorithm optimized to efficiently utilise the tagging information available for each event. …
Trading Networks Of Chinese Entrepreneurs In Singapore, Thomas Menkhoff, Chalmers E. Labig
Trading Networks Of Chinese Entrepreneurs In Singapore, Thomas Menkhoff, Chalmers E. Labig
Research Collection Lee Kong Chian School Of Business
The entrenchment of entrepreneurs in local, regional, or global business networks based on kinship, clanship, territorial, or ethnic ties has often been cited as characteristic of Chinese business communities in Southeast Asia. Qualitative interviews with Singaporean Chinese merchant-exporters were conducted in order to examine this thesis. The findings reveal that there is a strong tendency among Chinese entrepreneurs in Singapore to rely on external commercial relationships with ‘outsiders’ and ‘friends’ rather with those related by blood or marriage. It is suggested that kinship reciprocity may under some circumstances curb the autonomy and freedom of the transacting actors, thus limiting their …
Against The Communitarian Republic, Chandran Kukathas
Against The Communitarian Republic, Chandran Kukathas
Research Collection School of Social Sciences
Communitarianism has risen to prominence in recent debates in political philosophy largely on the strength of its criticisms of liberalism. Among its more important criticisms is the charge that liberal political thinking does not properly appreciate the value of community. At a deeper level, communitarian ism asserts that liberalism is infected by confusions about the nature of community, thinking?mistakenly?that it is no more than an associa tion of separate, isolated, 'atomistic' individuals. Communitarians thus advance not only certain claims about value but also other claims about how the human world should be understood.
Pluralism, Multiculturalism And Group Rights, Chandran Kukathas
Pluralism, Multiculturalism And Group Rights, Chandran Kukathas
Research Collection School of Social Sciences
However prevalent may have been the longing for homogeneity, or at least social unity, in political thinking, the fundamental point which must be recognized is that cultural diversity or pluralism has been the most notable feature of society in the history of human set tlement. "Marginality and pluralism were and are the norm of civi lized existence."1 There are several reasons why this is the pattern revealed by history.2 The first has to do with the ubiquity of military conflict. Even among barbarians ethnic political unity was fragile because military conquests resulted in the mixing of peoples. But throughout history …
Vote-Buying In The Thai Northeast: The July 1995 General Election, William A. Callahan
Vote-Buying In The Thai Northeast: The July 1995 General Election, William A. Callahan
Research Collection School of Social Sciences
The argument that Thailand was a bureaucratic polity characterized by limited popular participation has been challenged in recent years by the manifest rise of civil society. At the same time, business interests have assumed growing political importance, challenging the traditional pre-eminence of government officials and military officers. In particular, politics in provincial areas have come to be strongly influenced by a rising business elite. One effect of this changing landscape has been growing commercialization of the electoral process, as was clearly seen in the July 2, 1995, general election. Vote-buying and other abuses were widespread, especially in provincial areas. This …
Semiparametric Exploration Of Long Memory In Stock Prices, David K. C. Lee, Peter M. Robinson
Semiparametric Exploration Of Long Memory In Stock Prices, David K. C. Lee, Peter M. Robinson
Research Collection Lee Kong Chian School Of Business
New or modified methods for semiparametric analysis of fractional long memory in time series are described and applied to twenty-six stock prices and two stock indices. Evidence is found that some, but not all, of the stocks have long memory, while one of the indices exhibits mean reversion.
Reducing Cycle Time At An Ibm Wafer Fabrication Facility, Lieven Demeester, Christopher S. Tang
Reducing Cycle Time At An Ibm Wafer Fabrication Facility, Lieven Demeester, Christopher S. Tang
Research Collection Lee Kong Chian School Of Business
In 1991, IBM San Jose decided to produce and sell magnetic heads for computer disk drives on the open market to original equipment manufacturers. However, as IBM's wafer fabrication facility increased the number of products it manufactured, its manufacturing cycle time lengthened. Since cycle time is important in competing in the open market, IBM San Jose formed a study team (in cooperation with UCLA) to examine the wafer fab and to develop ways to reduce cycle time. The team designed a new production control system and proposed new performance measures for operators and engineers. IBM implemented the new production control …
Moorean Absurdities And The Nature Of Assertion, John N. Williams
Moorean Absurdities And The Nature Of Assertion, John N. Williams
Research Collection School of Social Sciences
I argue that Moore's propositions, for example, 'I went to the pictures last Tuesday but I don't believe that I did' cannot be rationally believed. Their assertors either cannot be rationally believed or cannot be believed to be rational. This analysis is extended to Moorean propositions such as God knows that I am an atheist and I believe that this proposition is false. I then defend the following definition of assertion: anyone asserts that p iff that person expresses a belief that p with the intention of causing relevant epistemic change in the cognition of an actual or potential audience.
Policies Of Secrecy And Denial: Barriers To Jury Reform, Mark Findlay
Policies Of Secrecy And Denial: Barriers To Jury Reform, Mark Findlay
Research Collection Yong Pung How School Of Law
The jury is that institution of justice most highly regarded in the communities in which it features. However, it remains little understood. The difficulties associated with researching the jury are well known. The barriers raised against an actual appreciation of the "jury" and juries, are diverse and formidable in all their operational contexts. Yet debates about jury reform are a common feature of criminal justice administration.
The Management Guru As Organizational Witchdoctor, Timothy Adrian Robert Clark, Graeme Salaman
The Management Guru As Organizational Witchdoctor, Timothy Adrian Robert Clark, Graeme Salaman
Research Collection Lee Kong Chian School Of Business
This paper suggests that the work of management gurus resembles the performance of a witchdoctor. Central to the work of management gurus is the achievement of transformations of consciousness among their audiences of managers. The view of management gurus offered in this paper has three elements: (1) the key to understanding the power and impact of gurus is to see what they do as a performance; (2) that this performance is of a particular kind-that of a witchdoctor; (3) that management gurus act as the functional equivalents to witchdoctors in modern organizations. The paper argues that at the heart of …
Entity Identification In Database Integration, Ee Peng Lim, Jaideep Srivastava, Satya Prabhakar, James Richardson
Entity Identification In Database Integration, Ee Peng Lim, Jaideep Srivastava, Satya Prabhakar, James Richardson
Research Collection School Of Computing and Information Systems
The objective of entity identification is to determine the correspondence between objective instances from more than one database. This paper examines the problem at the instance level assuming that schema level heterogeneity has been resolved a priori. Soundness and completeness are defined as the desired properties of any entity-identification technique. To achieve soundness, a set of identity and distinctness rules have to be established for the entities in the integrated world. We then propose the use of extended key, which is the union of keys (and possibly other attributes) from the relations to be matched, and its corresponding identity rule …
A Precise Measurement Of The Average B Hadron Lifetime, D. Buskulic, M. Thulasidas
A Precise Measurement Of The Average B Hadron Lifetime, D. Buskulic, M. Thulasidas
Research Collection School Of Computing and Information Systems
An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991–1993 runs of ALEPH, with the silicon vertex detector fully operational. This uses the three-dimensional impact parameter distribution of lepton tracks coming from semileptonic b decays and yields an average b hadron lifetime of 1.533 ± 0.013 ± 0.022 ps.
Tau Hadronic Branching Ratios, D. Buskulic, M. Thulasidas
Tau Hadronic Branching Ratios, D. Buskulic, M. Thulasidas
Research Collection School Of Computing and Information Systems
From 64492 selected τ-pair events, produced at the Z0 resonance, the measurement of the tau decays into hadrons from a global analysis using 1991, 1992 and 1993 ALEPH data is presented. Special emphasis is given to the reconstruction of photons and π0s, and the removal of fake photons. A detailed study of the systematics entering the π0 reconstruction is also given. A complete and consistent set of tau hadronic branching ratios is presented for 18 exclusive modes. Most measurements are more precise than the present world average. The new level of precision reached allows a stringent test τ-μ, universality in …
The Commercial Face Of God: Exploring The Nexus Between The Religious And The Material, Lily Kong
The Commercial Face Of God: Exploring The Nexus Between The Religious And The Material, Lily Kong
Research Collection School of Social Sciences
This paper explores the nexus between the cultural and the material by examining the ways in which religion and the economy are integrated in the context of economy-driven Singapore. The mutually constitutive relationships between the cultural and the material are explored through a discussion of the role of the state, capital and religious institutions in pulling together the sacred and the secular. Specifically, the analysis focuses on how the state harnesses religion ideologically in its economic development strategies; how capital harnesses the potential of religion in commercial enterprises in practical terms; and how religious institutions themselves behave as financial institutions. …
Tau Leptonic Branching Ratios, D. Buskulic, M. Thulasidas
Tau Leptonic Branching Ratios, D. Buskulic, M. Thulasidas
Research Collection School Of Computing and Information Systems
A sample of 62249 τ-pair events is selected from data taken with the ALEPH detector in 1991, 1992 and 1993. The measurement of the branching fractions for τ decays into electrons and muons is presented with emphasis on the study of systematic effects from selection, particle identification and decay classification. The results obtained are: B e = 17.79±0.12(stat)±0.06(syst)(%) and Bμ = 17.31±0.11(stat)±0.05(syst)(%). Combined with the most recent ALEPH determination of the τ lifetime, these results provide a relative measurement of the leptonic couplings in the weak charged current for transverse W bosons: ${cal G}_{ώ}/{cal G}_{e}=1.0002pm 0.0051$ and ${cal G}_{∢u}/{cal G}_{u}=0.9943pm …
Popular Music And A Sense Of Place In Singapore, Lily Kong
Popular Music And A Sense Of Place In Singapore, Lily Kong
Research Collection School of Social Sciences
This paper illustrates how popular music written, produced, and performed by Singaporeans provides a means through which the culture and society of Singapore may be understood. Music with English language text conveys a sense of place and reflects a distinctively Singaporean spirit and identity. The paper examines four themes: the portrayal of Singapore's multiracial population which reflects a unique cultural synthesis; the Singaporeans' concept of urbanity, manifested as the simultaneous attraction and repulsion towards the city and the desire for nature and the rustic; the distinctive social engineering in Singapore; and the way in which global issues are imported into …