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Articles 11671 - 11700 of 13123
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Cyber-Trespass And 'Unauthorized Access' As Legal Mechanisms Of Access Control: Lessons From The Us Experience, Mary W. S. Wong
Cyber-Trespass And 'Unauthorized Access' As Legal Mechanisms Of Access Control: Lessons From The Us Experience, Mary W. S. Wong
Research Collection Yong Pung How School Of Law
The common law doctrine of trespass to chattels has recently been revived and applied by courts in the United States (US) to cover intrusions (in the form of electronic signals) to computer systems connected to the Internet. These cases represent judicial recognition of the need to protect certain unwanted intrusions in cyberspace, though the principles developed therewith are remarkably expansive. As such, they overlap with the concept of ‘unauthorized access’ under computer misuse legislation in the US and elsewhere. This overlap has yet to be judicially acknowledged. Since the US, the United Kingdom and other common law countries not only …
Giving The Learners Control Of Navigation: Cognitive Gains And Losses, Tamas Makany, Paula C. Engelbrecht, Katie Meadmore, Richard Dudley, Edward S. Redhead, Itiel E. Dror
Giving The Learners Control Of Navigation: Cognitive Gains And Losses, Tamas Makany, Paula C. Engelbrecht, Katie Meadmore, Richard Dudley, Edward S. Redhead, Itiel E. Dror
Research Collection Lee Kong Chian School Of Business
E-learning often involves exploration of the information space that is somewhat similar to the exploration of space in the real world. Initial paths taken in any environment (be it a physical, virtual, or any other type) will not only guide the discoveries of what the environment contains, but also formulate the underlying organising principles. The suggested route in an art gallery frequently presents artworks that are either chronological or conceptually tied together. Deviating from this –and taking a route of our own, if at all possible– might be either confusing or insightful. The structure of the information, and the control …
Employer Branding In The Belgian Army: The Importance Of Instrumental And Symbolic Beliefs For Potential Applicants, Actual Applicants, And Military Employees, Filip Lievens
Research Collection Lee Kong Chian School Of Business
This study conceptualizes employer brand as a package of instrumental and symbolic attributes. Using a sample of 955 individuals (429 potential applicants, 392 actual applicants, and 134 military employees), we examine the relative importance of instrumental and symbolic employer brand beliefs across different groups of individuals: potential applicants, actual applicants, and military employees (with less than three years of tenure). Results show that instrumental attributes explain greater variance in the Army's attractiveness as an employer among actual applicants compared to potential applicants or employees. In all three groups, symbolic trait inferences explain a similar portion of the variance. In addition, …
Experiences With Tracking The Effects Of Changing Requirements On Morphbank: A Web-Based Bioinformatics Application, Subhajit Datta, Robert Van Engelen, David Gaitros, Neelima Jammigumpula
Experiences With Tracking The Effects Of Changing Requirements On Morphbank: A Web-Based Bioinformatics Application, Subhajit Datta, Robert Van Engelen, David Gaitros, Neelima Jammigumpula
Research Collection School Of Computing and Information Systems
In this paper, we present a case study of applying the metrics Mutation Index, Component Set, Dependency Index on Morphbank- a web based bioinformatics application - to track the effects of changing requirements on a software system and suggest design modifications to mitigate such impact. Morphbank is "an open web repository of biological images documenting specimen-based research in comparative anatomy, morphological phylogenetics, taxonomy and related fields focused on increasing our knowledge about biodiversity". This paper discusses the context of the case study, analyzes the results, highlights observations and learning, and mentions directions of future work.
Percentage-Based Hybrid Pattern Training With Neural Network Specific Cross Over, Sheng-Uei Guan, Kiruthika Ramanathan
Percentage-Based Hybrid Pattern Training With Neural Network Specific Cross Over, Sheng-Uei Guan, Kiruthika Ramanathan
Research Collection School Of Computing and Information Systems
In this paper, a new weight-setting method is proposed to improve the training time and generalization accuracy of feed-forward neural networks. This method introduces a percentage-based hybrid pattern training (PHP) scheme and aims to provide a solution to the problem dependency of other Genetic Algorithm (GA)-based Neural Network weight-setting methods. A neural network is trained using a neural network specific GA until a certain percentage of the training patterns is learned. The weights thus obtained are used as the initial weights for backpropagation (BP) training, which is then applied to complete the network training. Further improvement to the method was …
Efficient Algorithms For Machine Scheduling Problems With Earliness And Tardiness Penalties, Guang Feng, Hoong Chuin Lau
Efficient Algorithms For Machine Scheduling Problems With Earliness And Tardiness Penalties, Guang Feng, Hoong Chuin Lau
Research Collection School Of Computing and Information Systems
In this paper, we study the multi-machine scheduling problem with earliness and tardiness penalties and sequence dependent setup times. This problem can be decomposed into two subproblems—sequencing and timetabling. Sequencing focuses on assigning each job to a fixed machine and determine the job sequence on each machine. We call such assignment a semi-schedule. Timetabling focuses on finding an executable schedule from the semi-schedule via idle-time insertion. Sequencing is strongly NP-hard in general. Although timetabling is polynomial-time solvable, it can become a computational bottleneck if the procedure is executed many times within a larger framework. This paper makes two contributions. We …
Tube (Text-Cube) For Discovering Documentary Evidence Of Associations Among Entities, Hady Lauw, Ee Peng Lim, Hwee Hwa Pang
Tube (Text-Cube) For Discovering Documentary Evidence Of Associations Among Entities, Hady Lauw, Ee Peng Lim, Hwee Hwa Pang
Research Collection School Of Computing and Information Systems
User-driven discovery of associations among entities, and documents that provide evidence for these associations, is an important search task conducted by researchers and do-main information specialists. Entities here refer to real or abstract objects such as people, organizations, ideologies, etc. Associations are the inter-relationships among entities. Most current works in query-driven document retrieval and finding representative subgraphs are ill-suited for the task as they lack an awareness of entity types as well as an intuitive representation of associations. We propose the TUBE model, a text cube approach for discovering associations and documentary evidence of these associations. The model consists of …
Valuing Information Technology Infrastructures: A Growth Options Approach, Qizhi Dai, Robert J. Kauffman, Salvatore T. March
Valuing Information Technology Infrastructures: A Growth Options Approach, Qizhi Dai, Robert J. Kauffman, Salvatore T. March
Research Collection School Of Computing and Information Systems
Decisions to invest in information technology (IT) infrastructure are often made based on an assessment of its immediate value to the organization. However, an important source of value comes from the fact that such technologies have the potential to be leveraged in the development of future applications. From a real options perspective, IT infrastructure investments create growth options that can be exercised if and when an organization decides to develop systems to provide new or enhanced IT capabilities. We present an analytical model based on real options that shows the process by which this potential is converted into business value, …
Lecture Video Enhancement And Editing By Integrating Posture, Gesture, And Text, Feng Wang, Chong-Wah Ngo, Ting-Chuen Pong
Lecture Video Enhancement And Editing By Integrating Posture, Gesture, And Text, Feng Wang, Chong-Wah Ngo, Ting-Chuen Pong
Research Collection School Of Computing and Information Systems
This paper describes a novel framework for automatic lecture video editing by gesture, posture, and video text recognition. In content analysis, the trajectory of hand movement is tracked and the intentional gestures are automatically extracted for recognition. In addition, head pose is estimated through overcoming the difficulties due to the complex lighting conditions in classrooms. The aim of recognition is to characterize the flow of lecturing with a series of regional focuses depicted by human postures and gestures. The regions of interest (ROIs) in videos are semantically structured with text recognition and the aid of external documents. By tracing the …
Cognitive And Affective Aspects Of Thigmotaxis Strategy In Humans, Janos Kallai, Tamas Makany, Arpad Csatho, Kazmer Karadi, David Horvath, Beatrix Kovacs-Labadi, Robert Jarai, Lynn Nadel, Jake W. Jacobs
Cognitive And Affective Aspects Of Thigmotaxis Strategy In Humans, Janos Kallai, Tamas Makany, Arpad Csatho, Kazmer Karadi, David Horvath, Beatrix Kovacs-Labadi, Robert Jarai, Lynn Nadel, Jake W. Jacobs
Research Collection Lee Kong Chian School Of Business
The present article describes the cognitive and emotional aspects of human thiginotaxis (a wall-following spatial strategy) during exploration of virtual and physical spaces. The authors assessed 106 participants with spatial and nonspatial performance-based learning-memory tasks and with fear and anxiety questionnaires. The results demonstrate that thiginotaxis plays a distinct role at different phases of spatial learning. The 1st phase shows a positive correlation between thigmotaxis and general phobic avoidance, whereas there is no association between thigmotaxis and general phobic avoidance during later phases of learning. Furthermore, participants who underperformed in working memory tests and in a spatial construction task exhibited …
Segmentation Of Overlapping Particles In Automatic Size Analysis Using Multi-Flash Imaging, Tze K Koh, Nicholas Miles, Steve Morgan, Barrie Hayes-Gill
Segmentation Of Overlapping Particles In Automatic Size Analysis Using Multi-Flash Imaging, Tze K Koh, Nicholas Miles, Steve Morgan, Barrie Hayes-Gill
Research Collection College of Integrative Studies
In this paper, we propose a novel hardware approach to image segmentation, specifically in the case of overlapping particles. Our research is based on multi-flash imaging (MFI), originally developed to detect depth discontinuities. Multiple images captured with different illumination conditions provide additional information about a scene compared to conventional segmentation techniques. Shadows are used to identify true object edges and underlying particles. We applied the new approach in automated particle size analysis and evaluated it against the watershed and canny edge detection techniques. Evaluation results confirm that MFI can be applied in image segmentation and reveals the superiority of the …
What Do People Desire In Others? A Sociofunctional Perspective On The Importance Of Different Valued Characteristics, Catherine A. Cottrell, Steven L. Neuberg, Norman P. Li
What Do People Desire In Others? A Sociofunctional Perspective On The Importance Of Different Valued Characteristics, Catherine A. Cottrell, Steven L. Neuberg, Norman P. Li
Research Collection School of Social Sciences
Humans, as discriminately social creatures, make frequent judgments about others' suitability for interdependent social relations. Which characteristics of others guide these judgments and, thus, shape patterns of human affiliation? Extant research is only minimally useful for answering this question. On the basis of a sociofunctional analysis of human sociality, the authors hypothesized that people highly value trustworthiness and (to a lesser extent) cooperativeness in others with whom they may be interdependent, regardless of the specific tasks, goals, or functions of the group or relationship, but value other favorable characteristics (e.g., intelligence) differentially across such tasks, goals, or functions. Participants in …
Moving-Object Detection, Association, And Selection In Home Videos, Zailiang Pan, Chong-Wah Ngo
Moving-Object Detection, Association, And Selection In Home Videos, Zailiang Pan, Chong-Wah Ngo
Research Collection School Of Computing and Information Systems
Due to the prevalence of digital video camcorders, home videos have become an important part of life-logs of personal experiences. To enable efficient video parsing, a critical step is to automatically extract objects, events and scene characteristics present in videos. This paper addresses the problem of extracting objects from home videos. Automatic detection of objects is a classical yet difficult vision problem, particularly for videos with complex scenes and unrestricted domains. Compared with edited and surveillant videos, home videos captured in uncontrolled environment are usually coupled with several notable features such as shaking artifacts, irregular motions, and arbitrary settings. These …
A Novel Intra-Cavity Lens Design For Compact High Efficiency Tapered Laser Diodes, F. K. Lau, Chyng Wen Tee, R. V. Penty, I. H. White, N. Michel, M. Krakowski
A Novel Intra-Cavity Lens Design For Compact High Efficiency Tapered Laser Diodes, F. K. Lau, Chyng Wen Tee, R. V. Penty, I. H. White, N. Michel, M. Krakowski
Research Collection Lee Kong Chian School Of Business
An integrated parabolic lens capable of introducing a diverging effect to the optical mode propagating within the cavity of a tapered laser is proposed and demonstrated. This idea allows broader high-power beams to be generated by shorter cavities. Diverging lenses with etch depths of 0.13 and 0.27 mum are implemented, with 12 (9.5%) and 16.8 mum (13.3%) overall broadening of the near-fields widths measured at 1/e2 intensity. The peak output power as well as the threshold current is found to increase following the lens etching process, confirming the beneficial broadening effect introduced by the diverging lens.
Marketing The Chinese Dream Home: Gated Communities And Representations Of The Good Life In (Post-)Socialist Shanghai, Choon-Piew Pow, Lily Kong
Marketing The Chinese Dream Home: Gated Communities And Representations Of The Good Life In (Post-)Socialist Shanghai, Choon-Piew Pow, Lily Kong
Research Collection School of Social Sciences
This paper examines the advertising themes and rhetoric that have been assembled in the place-marketing of Shanghai's newly built gated communities. We demonstrate how place-marketing strategies, in this case selling the Chinese dream home, draws upon specific landscape meanings and values that are embedded in Chinese/ Shanghainese history, even as symbolic and cultural capital from the contemporary scene also exert their influences. Collectively, these representations of the good life both reflect and reinforce the exclusivist housing aspirations and privatist visions of middle-class residents of gated communities in contemporary Shanghai. While advertisements do not always achieve the outcomes that property developers …
On Stiffness In Affine Asset Pricing Models, Shirley Junying Huang, Jun Yu
On Stiffness In Affine Asset Pricing Models, Shirley Junying Huang, Jun Yu
Research Collection Lee Kong Chian School Of Business
Economic and econometric analysis of continuous-time affine asset pricing models often necessitates solving systems of ordinary differential equations (ODEs) numerically. Explicit RungeûKutta (ERK) methods have been suggested to solve these ODEs both in the theoretical finance literature and in the financial econometrics literature. In this paper we show that under many empirically relevant circumstances the ODEs involve stiffness, a phenomenon which leads to some practical difficulties for numerical methods with a finite region of absolute stability, including the whole class of ERK methods. The difficulties are highlighted in the present paper in the context of pricing zero-coupon bonds as well …
Perceived Cultural Importance And Actual Self-Importance Of Values In Cultural Identification, Ching Wan, Chi-Yue Chiu, Kim-Pong Tam, Sau-Lai Lee, Ivy Yee-Man Lau, Siqing Peng
Perceived Cultural Importance And Actual Self-Importance Of Values In Cultural Identification, Ching Wan, Chi-Yue Chiu, Kim-Pong Tam, Sau-Lai Lee, Ivy Yee-Man Lau, Siqing Peng
Research Collection School of Social Sciences
Cross-cultural psychologists assume that core cultural values define to a large extent what a culture is. Typically, core values are identified through an actual self-importance approach, in which core values are those that members of the culture as a group strongly endorse. In this article, the authors propose a perceived cultural importance approach to identifying core values, in which core values are values that members of the culture as a group generally believe to be important in the culture. In 5 studies, the authors examine the utility of the perceived cultural importance approach. Results consistently showed that, compared with values …
Mining Generalized Associations Of Semantic Relations From Textual Web Content, Tao Jiang, Ah-Hwee Tan, We Wang
Mining Generalized Associations Of Semantic Relations From Textual Web Content, Tao Jiang, Ah-Hwee Tan, We Wang
Research Collection School Of Computing and Information Systems
Traditional text mining techniques transform free text into flat bags of words representation, which does not preserve sufficient semantics for the purpose of knowledge discovery. In this paper, we present a two-step procedure to mine generalized associations of semantic relations conveyed by the textual content of Web documents. First, RDF (resource description framework) metadata representing semantic relations are extracted from raw text using a myriad of natural language processing techniques. The relation extraction process also creates a term taxonomy in the form of a sense hierarchy inferred from WordNet. Then, a novel generalized association pattern mining algorithm (GP-Close) is applied …
Quality Of Service Routing Strategy Using Supervised Genetic Algorithm, Zhaoxia Wang, Yugeng Sun, Zhiyong Wang, Huayu Shen
Quality Of Service Routing Strategy Using Supervised Genetic Algorithm, Zhaoxia Wang, Yugeng Sun, Zhiyong Wang, Huayu Shen
Research Collection School Of Computing and Information Systems
A supervised genetic algorithm (SGA) is proposed to solve the quality of service (QoS) routing problems in computer networks. The supervised rules of intelligent concept are introduced into genetic algorithms (GAs) to solve the constraint optimization problem. One of the main characteristics of SGA is its searching space can be limited in feasible regions rather than infeasible regions. The superiority of SGA to other GAs lies in that some supervised search rules in which the information comes from the problems are incorporated into SGA. The simulation results show that SGA improves the ability of searching an optimum solution and accelerates …
Towards Efficient Planning For Real World Partially Observable Domains, Pradeep R. Varakantham
Towards Efficient Planning For Real World Partially Observable Domains, Pradeep R. Varakantham
Research Collection School Of Computing and Information Systems
My research goal is to build large-scale intelligent systems (both single- and multi-agent) that reason with uncertainty in complex, real-world environments. I foresee an integration of such systems in many critical facets of human life ranging from intelligent assistants in hospitals to offices, from rescue agents in large scale disaster response to sensor agents tracking weather phenomena in earth observing sensor webs, and others. In my thesis, I have taken steps towards achieving this goal in the context of systems that operate in partially observable domains that also have transitional (non-deterministic outcomes to actions) uncertainty. Given this uncertainty, Partially Observable …
Logistics Network Design With Supplier Consolidation Hubs And Multiple Shipment Options, Michelle L. F. Cheong, Rohit Bhatnagar, Stephen C. Graves
Logistics Network Design With Supplier Consolidation Hubs And Multiple Shipment Options, Michelle L. F. Cheong, Rohit Bhatnagar, Stephen C. Graves
Research Collection School Of Computing and Information Systems
An important service provided by third-party logistics (3PL) firms is to manage the inbound logistics of raw materials and components from multiple suppliers to several manufacturing plants. A key challenge for these 3PL firms is to determine how to coordinate and consolidate the transportation flow, so as to get the best overall logistics performance. One tactic is to establish consolidation hubs that collect shipments from several suppliers, consolidate these shipments, and direct the consolidated shipments to the appropriate manufacturing plant. We consider the network design problem to implement this tactic, namely deciding the number, location and operation of consolidation hubs …
Clustering And Combinatorial Optimization In Recursive Supervised Learning, Kiruthika Ramanathan, Sheng Uei Guan
Clustering And Combinatorial Optimization In Recursive Supervised Learning, Kiruthika Ramanathan, Sheng Uei Guan
Research Collection School Of Computing and Information Systems
The use of combinations of weak learners to learn a dataset has been shown to be better than the use of a single strong learner. In fact, the idea is so successful that boosting, an algorithm combining several weak learners for supervised learning, has been considered to be the best off the shelf classifier. However, some problems still exist, including determining the optimal number of weak learners and the over fitting of data. In an earlier work, we developed the RPHP algorithm which solves both these problems by using a combination of global search, weak learning and pattern distribution. In …
For Estee Lauder's Thia Breen, A Successful Career Is Made Up Of 'People, Passion And Performance', Knowledge@Smu
For Estee Lauder's Thia Breen, A Successful Career Is Made Up Of 'People, Passion And Performance', Knowledge@Smu
Knowledge@SMU
In her keynote address at the 28th Annual Wharton Women in Business Conference in Philadelphia, Thia Breen, president of Estee Lauder Americas and head of Global Business Development, told the audience that she was nearly fired from her first job. "That was the moment I started to understand: I am totally responsible for my own success," said Breen, whose first job out of college was unloading shipments of toys at Marshall Fields.
Post Haste: Why Pitney Bowes Wants To Automate India's Mailstream, Knowledge@Smu
Post Haste: Why Pitney Bowes Wants To Automate India's Mailstream, Knowledge@Smu
Knowledge@SMU
How big is the mailbag of the world's most populous democracy? In a recent annual report, the Indian Department of Posts claims that its mail traffic was 8.6 billion pieces in 2003-04. In 2004-05, it says, that number dipped to 7.4 billion. Sound like a business in gradual decline? Not so, say executives at Pitney Bowes, the U.S.-based provider of mail management services, which has $5.5 billion in annual revenues and more than 35,000 employees worldwide. Two years ago Pitney Bowes took over its Indian distributor to set up shop in that country. How has its foray fared so far? …
Bundling Information Goods: The Case Of E-Journals, Yong Tan
Bundling Information Goods: The Case Of E-Journals, Yong Tan
Dissertations and Theses Collection (Open Access)
With the development of the Internet, e-business has become popular. Increasingly, e-journals are being sold via the Internet. E- journals have two main characteristics: one is the low marginal cost associated with access; the other is the large number of items. For the commercially motivated seller, the issue of bundling a large number of low marginal cost items so as to maximize profits needs to be dealt with. In this thesis, a solution by way of an intermediate bundle is proposed. It is found that the profit obtained under the proposed procedure is 4% to 5% higher than that under …
Report Of The Social Enterprise Committee, Lien Centre For Social Innovation
Report Of The Social Enterprise Committee, Lien Centre For Social Innovation
Lien Centre for Social Innovation: Research
Social entrepreneurs and social enterprises are an innovative alternative to provide employment opportunities for needy disadvantaged Singaporeans to mitigate the effects of the widening income gap. Still in its infancy stage, the social entrepreneurship and social enterprise sector faces challenges that are unique to Singapore due to its size, open economy and relative competitiveness.
Leadership In Knowledge Sharing: Creating Value Through Collaboration, Thomas Menkhoff, Yue Wah Chay, Hans-Dieter Evers, Benjamin Loh
Leadership In Knowledge Sharing: Creating Value Through Collaboration, Thomas Menkhoff, Yue Wah Chay, Hans-Dieter Evers, Benjamin Loh
Research Collection Lee Kong Chian School Of Business
This study aims to understand the antecedents of knowledge sharing behavior amongst tenant firms in Science and Technology Parks (STPs) which has been highlighted as a key factor for the development of an epistemic culture of innovation in STPs. Components of a model of knowledge management leadership with a focus on knowledge sharing and innovative value creation in STPs are developed inspired by the work of Nonaka, Nahapiet and Ghoshal, Guns and others. Collection of data on various relevant measures is ongoing, covering technology firms and STPs in Singapore and other Asian countries. Besides outlining model components and hypotheses, tentative …
Different Slopes For Different Folks: Self-Esteem Instability And Gender As Moderators Of The Relationship Between Self-Esteem And Attitudinal Aggression, G. Webster, L. Kirkpatrick, J. B. Nezlek, C. V. Smith, Elizabeth Layne Paddock
Different Slopes For Different Folks: Self-Esteem Instability And Gender As Moderators Of The Relationship Between Self-Esteem And Attitudinal Aggression, G. Webster, L. Kirkpatrick, J. B. Nezlek, C. V. Smith, Elizabeth Layne Paddock
Research Collection Lee Kong Chian School Of Business
The present research examined the relationships among self-esteem level, temporal self-esteem instability, gender, and self-reported aggression. Self-esteem level was negatively related to attitudinal aggression, although this relationship varied as a joint function of self-esteem instability and gender. It was strongest among men with unstable self-esteem and among women with stable self-esteem. Although self-esteem instability and narcissism (Study 3) were each positively related to behavioral aggression, the relationship between narcissism and attitudinal aggression varied as a function of self-esteem instability. The relationship between narcissism and attitudinal aggression was positive among people with stable self-esteem, but negative among people with unstable self-esteem, …
Integrated Crisis Mapping: Towards A Publics-Based, Emotion-Driven Conceptualization In Crisis Communication, Yan Jin, Augustine Pang, Glen T. Cameron
Integrated Crisis Mapping: Towards A Publics-Based, Emotion-Driven Conceptualization In Crisis Communication, Yan Jin, Augustine Pang, Glen T. Cameron
Research Collection Lee Kong Chian School Of Business
Extending current situation-based conceptualizations of crisis response, this paper develops a more generic and systemic approach tounderstanding the role of emotions in crisis situations. Taking an integrated approach, the authors propose a public-based, emotion-drivenperspective to crisis communication modeling, mapping different crisistypes, and underpinning them with two continua, the organization’s involvement with the crisis issue and primary public’s coping strategy. Thepaper further argues that the appropriate crisis response and tools tomanage a crisis should address the full range of emotions for optimal effectiveness at both strategic and tactical levels.
The Internationalization Of Singapore’S State-Enterprise Networks In The Context Of Asia’S Transborder Industrialization: Further Evidence From Indonesia, Vietnam And China, Wilfred Pow Ngee How, Caroline Yeoh
The Internationalization Of Singapore’S State-Enterprise Networks In The Context Of Asia’S Transborder Industrialization: Further Evidence From Indonesia, Vietnam And China, Wilfred Pow Ngee How, Caroline Yeoh
Research Collection Lee Kong Chian School Of Business
No abstract provided.