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Articles 1 - 30 of 943
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Optimal Management Of Virtual Infrastructures Under Flexible Cloud Service Agreements, Zhiling Guo, Jin Li, Ram Ramesh
Optimal Management Of Virtual Infrastructures Under Flexible Cloud Service Agreements, Zhiling Guo, Jin Li, Ram Ramesh
Research Collection School Of Computing and Information Systems
A cloud service agreement entails the provisioning of a required set of virtual infrastructure resources at a specified level of availability to a client. The agreement also lays out the price charged to the client and a penalty to the provider when the assured availability is not met. The availability assurance involves backup resource provisioning, and the provider needs to allocate backups cost-effectively by balancing the resource-provisioning costs with the potential penalty costs. We develop stochastic dynamic optimization models of the backup resource-provisioning problem, leading to cost-effective resource-management policies in different practical settings. We present two sets of dynamic provisioning …
Designing Learning Activities For Experiential Learning In A Design Thinking Course, Benjamin Gan, Eng Lieh Ouh
Designing Learning Activities For Experiential Learning In A Design Thinking Course, Benjamin Gan, Eng Lieh Ouh
Research Collection School Of Computing and Information Systems
One experiential learning design challenge is the duration of learning activities. These learning activities take up time and effort for teachers to design and student to perform. Another design challenge is the minimum instructional guidance of these learning activities which potentially impact the learning effectiveness of novice students. In this paper, we describe our findings of applying experiential learning method in a design thinking course with a list of learning activities performed iteratively. Each of the learning activity varies in their duration required and level of instructional guidance. Our survey seeks to find out which of the learning activities are …
Compositional Verification Of Heap-Manipulating Programs Through Property-Guided Learning, Long H. Pham, Jun Sun, Quang Loc Le
Compositional Verification Of Heap-Manipulating Programs Through Property-Guided Learning, Long H. Pham, Jun Sun, Quang Loc Le
Research Collection School Of Computing and Information Systems
Analyzing and verifying heap-manipulating programs automatically is challenging. A key for fighting the complexity is to develop compositional methods. For instance, many existing verifiers for heap-manipulating programs require user-provided specification for each function in the program in order to decompose the verification problem. The requirement, however, often hinders the users from applying such tools. To overcome the issue, we propose to automatically learn heap-related program invariants in a property-guided way for each function call. The invariants are learned based on the memory graphs observed during test execution and improved through memory graph mutation. We implemented a prototype of our approach …
Editorial Introduction: Re-Envisioning Education In A Globalizing World, Hiro Saito
Editorial Introduction: Re-Envisioning Education In A Globalizing World, Hiro Saito
Research Collection School of Social Sciences
This special issue focuses on education as a crucial factor mediating the relationship between youth and globalization. Specifically, four papers collectively explore how education can be re-envisioned from the following vantage point: the use of technology to foreground the fundamentally interconnected nature of today’s world; the help of mindfulness to deepen the awareness of such interconnectedness and cultivate acommitment to collective well-being; the role of activism to produce more critical knowledge and transformational solidarity for social justice on a global scale; at the same time, the necessity of reflexivity to examine one’s own ontological and epistemological assumptions before attempting any …
An Ai Approach To Measuring Financial Risk, Lining Yu, Wolfgang Karl Hardle, Lukas Borke, Thijs Benschop
An Ai Approach To Measuring Financial Risk, Lining Yu, Wolfgang Karl Hardle, Lukas Borke, Thijs Benschop
Sim Kee Boon Institute for Financial Economics
AI artificial intelligence brings about new quantitative techniques to assess the state of an economy. Here, we describe a new measure for systemic risk: the Financial Risk Meter (FRM). This measure is based on the penalization parameter (λ" role="presentation" style="box-sizing: border-box; display: inline; font-style: normal; font-weight: normal; line-height: normal; font-size: 18px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;">λλ) of a linear quantile lasso regression. The FRM is calculated by taking the average …
The Unexpected Activeness Of Passive Investors: A Worldwide Analysis Of Etfs, Si Cheng, Massimo Massa, Hong Zhang
The Unexpected Activeness Of Passive Investors: A Worldwide Analysis Of Etfs, Si Cheng, Massimo Massa, Hong Zhang
Research Collection Lee Kong Chian School Of Business
The global ETF industry provides more complicated investment vehicles than low-cost index trackers. Instead, we find that the real investments of ETFs may deviate from their benchmarks to leverage informational advantages (which leads to a surprising stock-selection ability) and to help affiliated OEFs through cross-trading. These effects are more prevalent in ETFs domiciled in Europe. Moreover, ETF flows seem to respond to additional risk. These results have important normative implications for consumer protection and financial stability. (JEL G20)
First 'Highly Cited Researcher’ In Singapore In The Field Of Economics And Business, Singapore Management University
First 'Highly Cited Researcher’ In Singapore In The Field Of Economics And Business, Singapore Management University
SMU Press Releases
Singapore Management University’s (SMU) business school dean, Professor Gerard George, has been globally recognised as a ‘Highly Cited Researcher’ in the field of Economics and Business in 2019. Professor George, who is Lee Kong Chian Chair Professor of Innovation and Entrepreneurship, and Dean of SMU’s Lee Kong Chian School of Business, is the first business professor in Singapore to have received this accolade which recognises the significant and global impact of his research in academia.
When Keystroke Meets Password: Attacks And Defenses, Ximing Liu
When Keystroke Meets Password: Attacks And Defenses, Ximing Liu
Dissertations and Theses Collection (Open Access)
Password is a prevalent means used for user authentication in pervasive computing environments since it is simple to be deployed and convenient to use. However, the use of password has intrinsic problems due to the involvement of keystroke. Keystroke behaviors may emit various side-channel information, including timing, acoustic, and visual information, which can be easily collected by an adversary and leveraged for the keystroke inference. On the other hand, those keystroke-related information can also be used to protect a user's credentials via two-factor authentication and biometrics authentication schemes. This dissertation focuses on investigating the PIN inference due to the side-channel …
Multimodal Mobile Sensing Systems For Physiological And Psychological Assessment, Nguyen Phan Sinh Huynh
Multimodal Mobile Sensing Systems For Physiological And Psychological Assessment, Nguyen Phan Sinh Huynh
Dissertations and Theses Collection (Open Access)
Sensing systems for monitoring physiological and psychological states have been studied extensively in both academic and industry research for different applications across various domains. However, most of the studies have been done in the lab environment with controlled and complicated sensor setup, which is only suitable for serious healthcare applications in which the obtrusiveness and immobility can be compromised in a trade-off for accurate clinical screening or diagnosing. The recent substantial development of mobile devices with embedded miniaturized sensors are now allowing new opportunities to adapt and develop such sensing systems in the mobile context. The ability to sense physiological …
The Future Development Of Reits In China, Jia Sun
The Future Development Of Reits In China, Jia Sun
Dissertations and Theses Collection (Open Access)
Real Estate Investment Trust (REIT) is a type of trust fund or corporation that pools the funds of a large number of investors by issuing a certificate of income and invest the raised funds in real estate projects that are managed by a specialized investment institution. The real estate investment risk is moderate, and the rent is stable, but the capital threshold is high, and it is difficult for small and medium investors to enter the market. The invention of REITs aims to solve this problem, through the collection of funds, so that small and medium investors can enter the …
Un Treaty On Mediation Signed In Singapore, Nadja Alexander, Shou Yu Chong
Un Treaty On Mediation Signed In Singapore, Nadja Alexander, Shou Yu Chong
Research Collection Yong Pung How School Of Law
The Singapore Convention on Mediation is a multilateral treaty which offers a legal framework facilitating the circulation of international mediated settlement agreements (iMSAs) across national borders. The Singapore Convention achieves this by elevating iMSAs to the status of a new type of legal instrument recognised in international law: neither a contract nor a consent arbitral award, iMSAs that fall within the scope of, and that satisfy the conditions within, the Singapore Convention enjoy a unique status. As outlined below, the new Convention establishes a system for the recognition and enforcement of commercial iMSAs. This report is a follow up to …
Automating Change-Level Self-Admitted Technical Debt Determination, Meng Yan, Xin Xia, Emad Shihab, David Lo, Jianwei Yin, Xiaohu Yang
Automating Change-Level Self-Admitted Technical Debt Determination, Meng Yan, Xin Xia, Emad Shihab, David Lo, Jianwei Yin, Xiaohu Yang
Research Collection School Of Computing and Information Systems
Self-Admitted Technical Debt (SATD) refers to technical debt that is introduced intentionally. Previous studies that identify SATD at the file-level in isolation cannot describe the TD context related to multiple files. Therefore, it is more beneficial to identify the SATD once a change is being made. We refer to this type of TD identification as “Change-level SATD Determination”, and identifying SATD at the change-level can help to manage and control TD by understanding the TD context through tracing the introducing changes. In this paper, we propose a change-level SATD Determination mode by extracting 25 features from software changes that are …
Improved Generalisation Bounds For Deep Learning Through L∞ Covering Numbers, Antoine Ledent, Yunwen Lei, Marius Kloft
Improved Generalisation Bounds For Deep Learning Through L∞ Covering Numbers, Antoine Ledent, Yunwen Lei, Marius Kloft
Research Collection School Of Computing and Information Systems
Using proof techniques involving L∞ covering numbers, we show generalisation error bounds for deep learning with two main improvements over the state of the art. First, our bounds have no explicit dependence on the number of classes except for logarithmic factors. This holds even when formulating the bounds in terms of the L 2 norm of the weight matrices, while previous bounds exhibit at least a square-root dependence on the number of classes in this case. Second, we adapt the Rademacher analysis of DNNs to incorporate weight sharing—a task of fundamental theoretical importance which was previously attempted only under very …
Singapore Case Note: Enforceability Of Settlement Agreements, Nadja Alexander, Shou Yu Chong
Singapore Case Note: Enforceability Of Settlement Agreements, Nadja Alexander, Shou Yu Chong
Research Collection Yong Pung How School Of Law
Since the signing of the Singapore Convention on Mediation in August this year, there has been an increased interest on the enforceability of settlement agreements, particularly those arising from mediation. The case of Law Chau Loon v Alphire Group Pte Ltd [2019] SGHC 275 from the Singapore High Court provides us with some general legal principles to consider when a settlement agreement is drafted. Although mediation did not take place between the parties in dispute, the principles stated by the High Court here remain relevant to the drafting of binding mediated settlement agreements (MSAs). This case is essential reading for …
Short- And Long-Run Effects Of Early Grades, Luca Facchinello
Short- And Long-Run Effects Of Early Grades, Luca Facchinello
Research Collection School of Economics
Does early grading affect educational choices? To answer the question, I exploit the staggeredimplementation of a reform which postponed grade assignment in Swedish compulsoryschool. I identify short- and long-term effects of early grading, for students with differentacademic ability and socioeconomic status (SES). When graded early on, high-ability students(especially if high-SES) perform better, and are more likely to choose academic coursesduring compulsory school. Low-ability students react in the opposite way, in particular iflow-SES. While high school attainment increases for high-ability low-SES students, collegeattainment decreases for low-ability low-SES students. None of these effects carry over tothe labor market. This suggests that early …
Politics And Policy: Chinese Money And Its Impact On The Regulation Of Residential Property In The West, Edward Seng Wei Ti
Politics And Policy: Chinese Money And Its Impact On The Regulation Of Residential Property In The West, Edward Seng Wei Ti
Research Collection Yong Pung How School Of Law
The narrative of Chinese real estate investors in some western jurisdictions reads like this: China has in recent decades, enjoyed burgeoning wealth creation across all strata in society. Chinese buyers are attracted to a ‘westernised’ education for their children, an agreeable and law-abiding civic society all whilst living in a clean and pleasant environment. Western real estate markets are seen as safe havens and bringing about portfolio diversification. This flood of Chinese wealth has impacted residential housing markets resulting in locals being outpriced. To combat unaffordability and housing shortages, governments have had no choice but to impose regulatory measures preventing …
The Role Of Career And Wage Incentives In Labor Productivity: Evidence From A Two-Stage Field Experiment In Malawi, Hyuncheol Kim, Seonghoon Kim, Thomas Kim
The Role Of Career And Wage Incentives In Labor Productivity: Evidence From A Two-Stage Field Experiment In Malawi, Hyuncheol Kim, Seonghoon Kim, Thomas Kim
Research Collection School Of Economics
We study how career and wage incentives affect labor productivity through self-selection and incentive effect channels using a two-stage field experiment in Malawi. First, recent secondary school graduates were hired with either career or wage incentives. After employment, a half of workers with career incentives randomly received wage incentives, and a half of workers with wage incentives randomly received career incentives. Career incentives attract higher-performing workers than wage incentives, but do not increase productivity conditional on selection. Wage incentives increase productivity for those recruited through career incentives. Observable characteristics are limited in explaining selection effects of entry-level workers.
Regulations And Brain Drain: Evidence From Wall Street Star Analysts’ Career Choices, Yuyan Guan, Congcong Li, Hai Lu, Franco Wong
Regulations And Brain Drain: Evidence From Wall Street Star Analysts’ Career Choices, Yuyan Guan, Congcong Li, Hai Lu, Franco Wong
Research Collection School Of Accountancy
The Global Settlement, along with related regulations in the early 2000s, prohibits the use of investment banking revenue to fund equity research and compensate equity analysts. We find that all-star analysts from investment banks are more likely to exit the profession or move to the buy side after the regulations. The departed star analysts’ earnings revisions and stock recommendations are more informative than those of the remaining analysts who followed the same companies. To the extent that star analysts are superior to their nonstar counterparts in terms of research ability and ability to inform the market, the exit of star …
From Actions To Paths To Patterning: Toward A Dynamic Theory Of Patterning In Routines, Kenneth T. Goh, Brian T. Pentland
From Actions To Paths To Patterning: Toward A Dynamic Theory Of Patterning In Routines, Kenneth T. Goh, Brian T. Pentland
Research Collection Lee Kong Chian School Of Business
This paper demonstrates a new way of seeing and theorizing about the dynamics of organizational routines through the concept of paths – time-ordered sequences of actions or events in performing work. Empirically and conceptually, paths provide the missing link between specific actions and patterns of action. When routines are represented as a narrative network, tracing the formation and dissolution of action paths can generate new insights about the dynamic patterning of actions in routine performances. We traced action paths using longitudinal field data from a videogame development project and found that action patterns change dramatically over time based on the …
Growth Effects Of Additive And Multiplicative Robots Alongside Conventional Machines, Hian Teck Hoon
Growth Effects Of Additive And Multiplicative Robots Alongside Conventional Machines, Hian Teck Hoon
Research Collection School Of Economics
We study the effects of introducing two different types of robots (additive and multiplicative) in an infinitely lived one-sector aggregative model with malleable capital on wages. The wage effects of these two polar cases are dramatically different. Given malleable capital that can be retrofitted for use either as conventional machines or as robots, we show that when it is profitable for firms to adopt additive robots in the production process, the real wage drops on impact and remains permanently at the lower level even as total malleable capital accumulates. However, when multiplicative robots are adopted, we show that while the …
Punctuation Prediction For Vietnamese Texts Using Conditional Random Fields, Hong Quang Pham, Binh T. Nguyen, Nguyen Viet Cuong
Punctuation Prediction For Vietnamese Texts Using Conditional Random Fields, Hong Quang Pham, Binh T. Nguyen, Nguyen Viet Cuong
Research Collection School Of Computing and Information Systems
We investigate the punctuation prediction for the Vietnamese language. This problem is crucial as it can be used to add suitable punctuation marks to machine-transcribed speeches, which usually do not have such information. Similar to previous works for English and Chinese languages, we formulate this task as a sequence labeling problem. After that, we apply the conditional random field model for solving the problem and propose a set of appropriate features that are useful for prediction. Moreover, we build two corpora from Vietnamese online news and movie subtitles and perform extensive experiments on these data. Finally, we ask four volunteers …
Riding The Blockchain Mania: Public Firms’ Speculative 8-K Disclosures, Pengkai Lin
Riding The Blockchain Mania: Public Firms’ Speculative 8-K Disclosures, Pengkai Lin
Research Collection School Of Accountancy
This paper provides evidence on public firms' initial 8-K disclosures that mention Blockchain and investors' response to these disclosures. We categorize the description of Blockchain activities in firms' 8-Ks as Speculative (e.g., a vague future plan that involves Blockchain) or Existing (e.g., a description of Blockchain product). We document a sharp increase in the number of initial 8-K disclosures of Blockchain, particularly by Speculative firms, coinciding with the rise of Bitcoin prices and excitement in Blockchain technology in the last quarter of 2017. Investors react positively to the Blockchain 8-Ks issued by Speculative firms in the initial seven-day event window …
Twenty Years Of Open Source Software: From Skepticism To Mainstream, Gregorio Robles, Igor Steinmacher, Paul Adams, Christoph Treude
Twenty Years Of Open Source Software: From Skepticism To Mainstream, Gregorio Robles, Igor Steinmacher, Paul Adams, Christoph Treude
Research Collection School Of Computing and Information Systems
Open source software (OSS) has conquered the software world. You can see it nearly everywhere, from Internet infrastructure to mobile phones to the desktop. In addition to that, although many OSS practices were viewed with skepticism 20 years ago, several have become mainstream in software engineering today: from development tools such as Git to practices such as modern code reviews.
Climbing The Corporate Ladder And Within-Person Changes In Narcissism: Reciprocal Relationships Over Two Decades, Bart Wille, Joeri Hofmans, Filip Lievens, Mitja D. Back, Filip De Fruyt
Climbing The Corporate Ladder And Within-Person Changes In Narcissism: Reciprocal Relationships Over Two Decades, Bart Wille, Joeri Hofmans, Filip Lievens, Mitja D. Back, Filip De Fruyt
Research Collection Lee Kong Chian School Of Business
Prior research demonstrated that narcissism fosters the attainment of higher managerial ranks in organizations. However, it is not known whether climbing the corporate ladder also fosters the development of narcissism over time. Whereas prior work consistently adopted a unidirectional perspective on narcissism and career attainment, this study presents and tests a bidirectional perspective, incorporating long-term development in narcissism in relation to and in response to long-term upward mobility. To this end, a cohort of highly educated professionals was assessed three times over a 22-year time frame. Extended latent difference score modeling showed that, over the entire interval, within-person changes in …
Selective Discrete Particle Swarm Optimization For The Team Orienteering Problem With Time Windows And Partial Scores, Vincent F. Yu, Perwira A. A. N. Redi, Parida Jewpanya, Aldy Gunawan
Selective Discrete Particle Swarm Optimization For The Team Orienteering Problem With Time Windows And Partial Scores, Vincent F. Yu, Perwira A. A. N. Redi, Parida Jewpanya, Aldy Gunawan
Research Collection School Of Computing and Information Systems
This paper introduces the Team Orienteering Problem with Time Windows and Partial Scores (TOPTW-PS),which is an extension of the Team Orienteering Problem with Time Windows (TOPTW). In the context of theTOPTW-PS, each node is associated with a set of scores with respect to a set of attributes. The objective ofTOPTW-PS is to find a set of routes that maximizes the total score collected from a subset of attributes whenvisiting the nodes subject to the time budget and the time window at each visited node. We develop a mathematical model and propose a discrete version of the Particle Swarm Optimization (PSO), …
Study Group Travel Behaviour Patterns From Large-Scale Smart Card Data, Xiancai Tian, Baihua Zheng
Study Group Travel Behaviour Patterns From Large-Scale Smart Card Data, Xiancai Tian, Baihua Zheng
Research Collection School Of Computing and Information Systems
In this paper, we aim at studying the group travel behaviour (GTB) patterns from large-scale auto fare collection (AFC) data. GTB is defined as two or more commuters intentionally and regularly traveling together from an origin to a destination. We propose a method to identify GTB accurately and efficiently and apply our method to the Singapore AFC dataset to reveal the GTB patterns of Singapore commuters. The case study proves that our method is able to identify GTB patterns more accurately and efficiently than the state-of-the-art.
The Information Disclosure Trilemma: Privacy, Attribution And Dependency, Ping Fan Ke
The Information Disclosure Trilemma: Privacy, Attribution And Dependency, Ping Fan Ke
Research Collection School Of Computing and Information Systems
Information disclosure has been an important mechanism to increase transparency and welfare in various contexts, from rating a restaurant to whistleblowing the wrongdoing of government agencies. Yet, the author often needs to be sacrificed during information disclosure process – an anonymous disclosure will forgo the reputation and compensation whereas an identifiable disclosure will face the threat of retaliation. On the other hand, the adoption of privacy-enhancing technologies (PETs) lessens the tradeoff between privacy and attribution while introducing dependency and potential threats. This study will develop the desirable design principles and possible threats of an information disclosure system, and discuss how …
An Iot-Driven Smart Cafe Solution For Human Traffic Management, Maruthi Prithivirajan, Kyong Jin Shim
An Iot-Driven Smart Cafe Solution For Human Traffic Management, Maruthi Prithivirajan, Kyong Jin Shim
Research Collection School Of Computing and Information Systems
In this study, we present an IoT-driven solution for human traffic management in a corporate cafe. Using IoT sensors, our system monitors human traffic in a physical cafe located at a large international corporation located in Singapore. The backend system analyzes the streaming data from the sensors and provides insights useful to the cafe visitors as well as the cafe manager.
Chief Financial Officer Demographic Characteristics And Fraudulent Financial Reporting In China, Jinghui Sun, Pamela Kent, Baolei Qi, Jiwei Wang
Chief Financial Officer Demographic Characteristics And Fraudulent Financial Reporting In China, Jinghui Sun, Pamela Kent, Baolei Qi, Jiwei Wang
Research Collection School Of Accountancy
We investigate whether management's cognitions, values and perceptions are associated with fraud for 18 863 firm-years for Chinese listed firms from 2000 to 2014. Demographic characteristics of the chief financial officer (CFO) are used as proxies for management's cognitions, values and perceptions. We find that fraudulent financial reporting is higher when CFOs are younger, male, and have lower education backgrounds. An analysis of inflated earnings, fictitious assets, material omissions and other material misstatements provide similar results, with the exception that CFOs with higher education levels are associated with more inflated earnings. Accounting and Finance
Tuning Networks For Prosocial Behavior: From Senseless Swarms To Smart Mobs [Commentary], Sun Sun Lim, Roland Bouffanais
Tuning Networks For Prosocial Behavior: From Senseless Swarms To Smart Mobs [Commentary], Sun Sun Lim, Roland Bouffanais
Research Collection College of Integrative Studies
Social media have been seen to accelerate the spread of negative content such as disinformation and hate speech, often unleashing a reckless herd mentality within networks, further aggravated by malicious entities using bots for amplification. So far, the response to this emerging global crisis has centered around social media platform companies making reactive moves that appear to have greater symbolic value than practical utility. Proposes a solution to favor prosocial behavior via social networks.