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Singapore Management University

2014

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Raising The Bar 3: Essential Finance And Accounting Function Staff Skills, Training Needs And Challenges In Driving Productivity, Clarence Goh Dec 2014

Raising The Bar 3: Essential Finance And Accounting Function Staff Skills, Training Needs And Challenges In Driving Productivity, Clarence Goh

Research Collection School Of Accountancy

Tight manpower environment is likely to continue to be a feature of the Singapore economy. Thus, productivitygrowth is key, for firms to cope with tight labour market and sustaining higher wages.1 Beyond Singapore,productivity is also an area of focus for other Asian economies like Hong Kong and Japan, who face similarchallenges, such as rapidly ageing populations and shrinking workforces.

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Unpacking The Multicultural Experience-Creativity Relationship, Angela K. Y. Leung Dec 2014

Unpacking The Multicultural Experience-Creativity Relationship, Angela K. Y. Leung

Research Collection School of Social Sciences

No abstract provided.

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Pads: Passive Detection Of Moving Targets With Dynamic Speed Using Phy Layer Information, Kun Qian, Chenshu Wu, Zheng Yang, Yunhao Liu, Zimu Zhou Dec 2014

Pads: Passive Detection Of Moving Targets With Dynamic Speed Using Phy Layer Information, Kun Qian, Chenshu Wu, Zheng Yang, Yunhao Liu, Zimu Zhou

Research Collection School Of Computing and Information Systems

Device-free passive detection is an emerging technology to detect whether there exists any moving entities in the area of interests without attaching any device to them. It is an essential primitive for a broad range of applications including intrusion detection for safety precautions, patient monitoring in hospitals, child and elder care at home, etc. Despite of the prevalent signal feature Received Signal Strength (RSS), most robust and reliable solutions resort to finer-grained channel descriptor at physical layer, e.g., the Channel State Information (CSI) in the 802.11n standard. Among a large body of emerging techniques, however, few of them have explored …

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Anomaly Detection Through Enhanced Sentiment Analysis On Social Media Data, Zhaoxia Wang, Victor Joo, Chuan Tong, Xin Xin, Hoong Chor Chin Dec 2014

Anomaly Detection Through Enhanced Sentiment Analysis On Social Media Data, Zhaoxia Wang, Victor Joo, Chuan Tong, Xin Xin, Hoong Chor Chin

Research Collection School Of Computing and Information Systems

Anomaly detection in sentiment analysis refers to detecting abnormal opinions, sentiment patterns or special temporal aspects of such patterns in a collection of data. The anomalies detected may be due to sudden sentiment changes hidden in large amounts of text. If these anomalies are undetected or poorly managed, the consequences may be severe, e.g. A business whose customers reveal negative sentiments and will no longer support the establishment. Social media platforms, such as Twitter, provide a vast source of information, which includes user feedback, opinion and information on most issues. Many organizations also leverage social media platforms to publish information …

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From Cells To Streets: Estimating Mobile Paths With Cellular-Side Data, Qatar Computing Research Institute, University Of Birmingham, Seattle University Of Washington, Haewoon Kwak Dec 2014

From Cells To Streets: Estimating Mobile Paths With Cellular-Side Data, Qatar Computing Research Institute, University Of Birmingham, Seattle University Of Washington, Haewoon Kwak

Research Collection School Of Computing and Information Systems

Through their normal operation, cellular networks are a repository of continuous location information from their subscribed devices. Such information, however, comes at a coarse granularity both in terms of space, as well as time. For otherwise inactive devices, location information can be obtained at the granularity of the associated cellular sector, and at infrequent points in time, that are sensitive to the structure of the network itself, and the level of mobility of the device. In this paper, we are asking the question of whether such sparse information can help to identify the paths followed by mobile connected devices throughout …

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Determinants Of Ethical Climate In The Firm:The Role Of Governance Systems And Environmental Uncertainty, John J. Williams, Alfred E. Seaman Dec 2014

Determinants Of Ethical Climate In The Firm:The Role Of Governance Systems And Environmental Uncertainty, John J. Williams, Alfred E. Seaman

Research Collection School Of Accountancy

Corporate governance mechanisms essentially reside in the control structure/systems of most organizations and provide, theoretically at least, a conduit to support a better organizational ethical climate. This linkage, however, has seldom been portrayed this way in the literature and, correspondingly, there are virtually no empirical studies to offer increased understanding, especially with respect to the professional accountant in practice. Accordingly, this paper empirically assesses the governance mechanisms sanctioned by the International Federation of Accountants (2009) as determinants of an organization’s ethical climate based on evidence from a Canadian sample of CFOs/controllers. The ethics/leadership literature relating to ethical climate provides the …

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The Inclusion Of General Counsel In Top Management And Tax Avoidance, Beng Wee Goh, Jimmy Lee, Jeffrey Ng Dec 2014

The Inclusion Of General Counsel In Top Management And Tax Avoidance, Beng Wee Goh, Jimmy Lee, Jeffrey Ng

Research Collection School Of Accountancy

We examine whether the inclusion of general counsel in top management is associated with a firm’s tax avoidance. We find that firms with general counsel as part of the top management team have lower GAAP effective tax rate, more uncertain tax positions, a higher likelihood of engaging in tax shelter activities, and more tax haven countries in which the firm reports a significant subsidiary, relative to firms without a general counsel in top management. In addition, we find that among firms with general counsel in top management, tax avoidance is greater when (1) the general counsel has tax-related expertise, (2) …

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Rural Electrification And Development In South Korea, Terry Van Gevelt Dec 2014

Rural Electrification And Development In South Korea, Terry Van Gevelt

Research Collection College of Integrative Studies

In fifteen years, South Korea went from providing only 12% of rural households with electricity to providing 98% of rural households with electricity for lighting and productive uses. This paper provides an analysis of rural electrification and development in South Korea from 1965 to 1979 and finds that rural electrification contributed to a significant increase in rural household income levels and improved the quality of life in villages substantially. At the same time, rural electrification did not benefit the poorest quartile of rural households, increased economic and social inequality, led to a significant increase in household debt, and accelerated migration …

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The (Un) Desirability Of Happiness: Pathogen Threats Predict Differences In The Value Of Happiness, Sharon Li Hua Koh Dec 2014

The (Un) Desirability Of Happiness: Pathogen Threats Predict Differences In The Value Of Happiness, Sharon Li Hua Koh

Dissertations and Theses Collection (Open Access)

People in some parts of the world find positive emotions more desirable than others. What accounts for this variability? We predicted that happiness would be valued less under conditions where the behaviors that happiness promotes would be less beneficial. We analyzed international survey data and United Nations voting records and found that happiness was valued relatively less in environments that had been historically pathogen-rich. Using a series of experimental studies, we showed that people who were experimentally primed by the threat of pathogens judged happiness in others less favorably and found happiness less appropriate. Our findings contribute to research on …

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On The Limitations Of Using Situational Judgement Tests To Measure Interpersonal Skills: The Moderating Influence Of Employee Anger, Jerel E. Slaughter, Michael S. Christian, Nathan P. Podsakoff, Evan F. Sinar, Filip Lievens Dec 2014

On The Limitations Of Using Situational Judgement Tests To Measure Interpersonal Skills: The Moderating Influence Of Employee Anger, Jerel E. Slaughter, Michael S. Christian, Nathan P. Podsakoff, Evan F. Sinar, Filip Lievens

Research Collection Lee Kong Chian School Of Business

Many authors have suggested that situational judgment tests (SJTs) are useful tools for assessing applicants because SJT items can be written to assess a number of job-related knowledges, skills, abilities and other characteristics (KSAOs). However, SJTs may not be appropriate for measuring certain KSAOs for some applicants. We posit that using SJTs to measure interpersonal skills may lead to invalid inferences about applicants with higher levels of angry hostility (AH), and thus, AH should moderate the relation between interpersonally oriented SJTs and job performance. Three studies, using samples of healthcare workers (n = 225), police officers (n = 54), and …

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Rethinking Governance In Management Research: From The Editors, Laszlo Tihanyi, Scott Graffin, Gerard George Dec 2014

Rethinking Governance In Management Research: From The Editors, Laszlo Tihanyi, Scott Graffin, Gerard George

Research Collection Lee Kong Chian School Of Business

In the field of management, the study of governance has primarily dealt with decision-making by boards of directors, chief executives, and senior managers. The corporate governance literature has generated important insights regarding incentive alignment, risk taking, and coordination challenges. Emerging trends, highlighted in this issue, raise new questions regarding managerial roles, organizational contexts, internal and social processes, and changes in governance over time. We encourage management scholars to rethink their approach to governance research by considering stakeholder engagement, the implications of big data, social impact, global dimensions, and comparative analysis of governance. A broadened conceptualization of governance may also deal …

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Negotiating Deals From A Position Of Powerlessness, Michael Schaerer, Roderick I. Swaab Dec 2014

Negotiating Deals From A Position Of Powerlessness, Michael Schaerer, Roderick I. Swaab

Research Collection Lee Kong Chian School Of Business

When you are negotiating a deal it pays to have viable alternatives to fall back on – or at least that’s what most people think. New research suggests that being powerless can be liberating and help you achieve better deals.

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Analyst Price Target Expected Returns And Option Implied Risk, Turan G. Bali, Jianfeng Hu, Scott Murray Dec 2014

Analyst Price Target Expected Returns And Option Implied Risk, Turan G. Bali, Jianfeng Hu, Scott Murray

Research Collection Lee Kong Chian School Of Business

Motivated by the nature of asset pricing models, we investigate the cross-sectional relation between the market's ex-ante view of a stock's risk and the stock's ex-ante expected return. We demonstrate that an ex-ante measure of expected returns based on analyst price targets is highly related to the market's required rate of return. Using this measure, we show that ex-ante measures of volatility, skewness, and kurtosis derived from option prices are positively related to ex-ante expected returns. We then decompose the risk measures into systematic and unsystematic components and find that while expected returns are related to both systematic and unsystematic …

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Substitutes Or Complements? A Configurational Examination Of Corporate Governance Mechanisms, Vilmos Misangyi, Abhijith G. Acharya Dec 2014

Substitutes Or Complements? A Configurational Examination Of Corporate Governance Mechanisms, Vilmos Misangyi, Abhijith G. Acharya

Research Collection Lee Kong Chian School Of Business

We conduct an exploratory qualitative comparative case analysis of the S&P 1500 firms with the aim of elaborating theory on how corporate governance mechanisms work together effectively. To do so, we integrate extant theory and research to specify the bundle of mechanisms that operate to mitigate the agency problem among publicly traded corporations and review what previous research has said about how these mechanisms combine. We then use the fuzzy-set approach to qualitative comparitive analysis (QCA) to explore the combinations of governance mechanisms that exist among the S&P 1500 firms that achieve high (and not-high) profitability. Our findings suggest that …

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A Network Bidder Behavior Model In Online Auctions: A Case Of Fine Art Auctions, Mayukh Dass, Srinivas K. Reddy, Dawn Iacobucci Dec 2014

A Network Bidder Behavior Model In Online Auctions: A Case Of Fine Art Auctions, Mayukh Dass, Srinivas K. Reddy, Dawn Iacobucci

Research Collection Lee Kong Chian School Of Business

The marketing literature provides a solid understanding of auctions regarding final sales prices and many aspects of the processes that unfold to result in those outcomes. This research complements those perspectives by first presenting a new bidder behavior model that shows the role of emergent network ties among bidders on the auction outcome. Dyadic ties are identified as the bid and counter-bid patterns of interactions between bidders that unfold throughout the duration of an auction. These structures are modeled using network analyses, which enables: (1) a richer understanding of detailed auction processes, both within auctions and across auctions of multiple …

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Platform Pricing With Endogenous Network Effects, Mei Lin, Ruhai Wu, Wen Zhou Dec 2014

Platform Pricing With Endogenous Network Effects, Mei Lin, Ruhai Wu, Wen Zhou

Research Collection School Of Computing and Information Systems

This paper examines a monopoly platform’s two-sided pricing strategy through modeling the trades between the participating sellers and buyers. In this approach, the network effects emerge endogenously through the equilibrium trading strategies of the two sides. We show that platform pricing depends crucially on the characteristics associated with market liquidity, including both sides’ entry costs, the buyers’ preferences, and the distribution of the sellers’ quality. The platform may subsidize sellers if the market is sufficiently liquid, whereas buyer subsidy can be optimal given an illiquid market. We also illustrate the impact of the sellers’ quality heterogeneity on the platform’s optimal …

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Orchestrating Service Innovation Using Design Moves: The Dynamics Of Fit Between Service And Enterprise It Architectures, Narayan Ramasubbu, Charles Jason Woodard, Sunil Mithas Dec 2014

Orchestrating Service Innovation Using Design Moves: The Dynamics Of Fit Between Service And Enterprise It Architectures, Narayan Ramasubbu, Charles Jason Woodard, Sunil Mithas

Research Collection School Of Computing and Information Systems

Service science perspectives highlight the central role of information technology (IT) in transforming the design and delivery of services. To discern the mechanisms through which IT impacts service innovation, we explore the dynamics of the relationship between enterprise IT and service architectures, and how these dynamics influence the performance of service innovation projects. We conducted six case studies to investigate how firms orchestrated service innovation, focusing on the design of the service architecture and its relationship to enterprise systems. We synthesize the case findings to develop a set of propositions on the antecedents and consequences of fit (or misfit) between …

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Sensor-Free Corner Shape Detection By Wireless Networks, Yuxi Wang, Zimu Zhou, Kaishun Wu Dec 2014

Sensor-Free Corner Shape Detection By Wireless Networks, Yuxi Wang, Zimu Zhou, Kaishun Wu

Research Collection School Of Computing and Information Systems

Due to the rapid growth of the smartphone applications and the fast development of the Wireless Local Area Networks (WLANs), numerous indoor location-based techniques have been proposed during the past several decades. Floorplan, which defines the structure and functionality of a specific indoor environment, becomes a hot topic nowadays. Conventional floorplan techniques leverage smartphone sensors combined with WiFi signals to construct the floorplan of a building. However, existing approaches with sensors cannot detect the shape of a corner, and the sensors cost huge amount of energy during the whole floorplan constructing process. In this paper, we propose a sensor-free approach …

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Contract Law Update 2014, Yihan Goh Dec 2014

Contract Law Update 2014, Yihan Goh

Research Collection Yong Pung How School Of Law

With the end of 2014 almost upon us, it is apposite to take stock of the more important developments in Singapore contract law in the year. This entry examines four cases that straddle important developments across various fields in contract law, namely, formation, terms, breach and illegality. In each case, it can be seen that the Singapore courts are anxious to consolidate existing law, and to chart new courses where relevant and appropriate.

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Young People's Attitudes Towards Inter-Ethnic And Inter-Religious Socializing, Courtship And Marriage In Indonesia, Lyn Parker, Chang Yau Hoon, Raihani Raihani Dec 2014

Young People's Attitudes Towards Inter-Ethnic And Inter-Religious Socializing, Courtship And Marriage In Indonesia, Lyn Parker, Chang Yau Hoon, Raihani Raihani

Research Collection School of Social Sciences

This paper presents the attitudes of high school students in Indonesia towards inter-ethnic and inter-religious socializing, courtship and marriage. It also explores how different personal characteristics and social conditions such as gender, ethnicity, type of school and community affect these attitudes. The basic findings come from a survey of more than 3,000 students in senior high schools in five provinces of Indonesia: Jakarta, Yogyakarta, West Sumatra, Central Kalimantan and Bali. Survey data were supplemented with data from interviews and focus group discussions with students and from participant observation in and around the same schools. The authors found that most students …

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Modeling The Evolution Of Generativity And The Emergence Of Digital Ecosystems, C. Jason Woodard, Eric K. Clemons Dec 2014

Modeling The Evolution Of Generativity And The Emergence Of Digital Ecosystems, C. Jason Woodard, Eric K. Clemons

Research Collection School Of Computing and Information Systems

Recent literature on sociotechnical systems has employed the concept of generativity to explain the remarkable capacity for digital artifacts to support decentralized innovation and the emergence of rich business ecosystems. In this paper, we propose agent-based computational modeling as a tool for studying the evolution of generativity, and offer a set of building blocks for constructing agent-based models in which generativity evolves. We describe a series of models that we have created using these building blocks, and summarize the results of our computational experiments to date. We find in several different settings that key features of generative systems can themselves …

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Cardioguard: A Brassiere-Based Reliable Ecg Monitoring Sensor System For Supporting Daily Smartphone Healthcare Applications, Sungjun Kwon, Jeehoon Kim, Seungwoo Kang, Youngki Lee, Hyunjae Baek, Kwangsuk Park Dec 2014

Cardioguard: A Brassiere-Based Reliable Ecg Monitoring Sensor System For Supporting Daily Smartphone Healthcare Applications, Sungjun Kwon, Jeehoon Kim, Seungwoo Kang, Youngki Lee, Hyunjae Baek, Kwangsuk Park

Research Collection School Of Computing and Information Systems

We propose CardioGuard, a brassiere-based reliable electrocardiogram (ECG) monitoring sensor system, for supporting daily smartphone healthcare applications. It is designed to satisfy two key requirements for user-unobtrusive daily ECG monitoring: reliability of ECG sensing and usability of the sensor. The system is validated through extensive evaluations. The evaluation results showed that the CardioGuard sensor reliably measure the ECG during 12 representative daily activities including diverse movement levels; 89.53% of QRS peaks were detected on average. The questionnaire-based user study with 15 participants showed that the CardioGuard sensor was comfortable and unobtrusive. Additionally, the signal-to-noise ratio test and the washing durability …

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Extracting Interest Tags From Twitter User Biographies, Ying Ding, Jing Jiang Dec 2014

Extracting Interest Tags From Twitter User Biographies, Ying Ding, Jing Jiang

Research Collection School Of Computing and Information Systems

Twitter, one of the most popular social media platforms, has been studied from different angles. One of the important sources of information in Twitter is users’ biographies, which are short self-introductions written by users in free form. Biographies often describe users’ background and interests. However, to the best of our knowledge, there has not been much work trying to extract information from Twitter biographies. In this work, we study how to extract information revealing users’ personal interests from Twitter biographies. A sequential labeling model is trained with automatically constructed labeled data. The popular patterns expressing user interests are extracted and …

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Where There’S A Will: Can Highlighting Future Youth-Targeted Marketing Increase Support For Soda Taxes?, Sungjong Roh, Jonathon P. Schuldt Dec 2014

Where There’S A Will: Can Highlighting Future Youth-Targeted Marketing Increase Support For Soda Taxes?, Sungjong Roh, Jonathon P. Schuldt

Research Collection Lee Kong Chian School Of Business

Objective: Amid concern about high rates of obesity and related diseases, the marketing of nutritionally poor foods to young people by the food industry has come under heavy criticism by public health advocates, who cite decades of youth-targeted marketing in arguing for reforms. In light of recent evidence that the same event evokes stronger emotional reactions when it occurs in the future versus the past, highlighting youth-targeted marketing that has yet to occur may evoke stronger reactions to such practices, and perhaps, greater support for related health policy initiatives. Method: In a between-subjects experiment, Web participants (N = 285) read …

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A Universal Appointment Rule With Patient Classification For Service Times, No-Shows And Walk-Ins, Cayirli Tugba, Kum Khiong Yang Dec 2014

A Universal Appointment Rule With Patient Classification For Service Times, No-Shows And Walk-Ins, Cayirli Tugba, Kum Khiong Yang

Research Collection Lee Kong Chian School Of Business

This study evaluates patient classification for scheduling and sequencing appointments for patients differentiated by their mean and standard deviation of service times, no-show, and walk-in probabilities. Alternative appointment systems are tested through simulation using a universal Dome rule and some of the best traditional appointment rules in the literature. Our findings show that the universal Dome rule performs better in terms of reducing the total cost of patient’s waiting time, doctor’s idle time, and overtime, and its performance improves further with the right sequencing of patient groups. Although it is a challenge to find the best sequence, we propose a …

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How Firms Respond To Financial Restatement: Ceo Successors And External Reactions, David Gomulya, Warren Boeker Dec 2014

How Firms Respond To Financial Restatement: Ceo Successors And External Reactions, David Gomulya, Warren Boeker

Research Collection Lee Kong Chian School Of Business

Although past studies have paid considerable attention to firms' reputations, few have investigated the actions that firms take following a reputation-damaging event. We identify firms involved in financial earnings restatements and examine whether naming a successor CEO with specific qualities serves to signal the seriousness of a firm's efforts to restore its reputation. Using theories of market signaling, we argue that attributes of successor CEOs significantly influence the reactions of key external constituencies. In particular, firms with more severe restatement tend to name successors who have prior CEO or turnaround experience and a more elite education. The naming of such …

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Efficacy Of R&D Work In Offshore Captive Centers: An Empirical Study Of Task Characteristics, Coordination Mechanisms, And Performance, Deepa Mani, Kannan Srikanth, Anandhi Bharadwaj Dec 2014

Efficacy Of R&D Work In Offshore Captive Centers: An Empirical Study Of Task Characteristics, Coordination Mechanisms, And Performance, Deepa Mani, Kannan Srikanth, Anandhi Bharadwaj

Research Collection Lee Kong Chian School Of Business

Seizing the latest technological advances in distributed work, an increasing number of firms have set up offshore captive centers (CCs) in emerging economies to carry out sophisticated R&D work. We analyse survey data from 132 R&D CCs established by foreign multinational companies in India to understand how firms execute distributed innovative work. Specifically, we examine the performance outcomes of projects using different technology-enabled coordination strategies to manage their interdependencies across multiple locations. We find that modularization of work across locations is largely ineffective when the underlying tasks are less routinized, less analyzable, and less familiar to the CC. Coordination based …

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Cash Is Suprisingly Valuable As A Strategic Asset, Changhyun Kim, Richard A. Bettis Dec 2014

Cash Is Suprisingly Valuable As A Strategic Asset, Changhyun Kim, Richard A. Bettis

Research Collection Lee Kong Chian School Of Business

Academics, politicians, and journalists are often highly critical of U.S. firms for holding too much cash. Cash holdings are stockpiled free-cash flow and incur substantial opportunity costs from the perspectives of economics. However, behavioral theory highlights the benefits of cash holdings as fungible slack resources facilitating adaptive advantages. We use the countervailing forces embodied in these two theories to hypothesize and test a quadratic functional relationship of returns to cash measured by Tobin's q. We also build and test a related novel hypothesis of scale-dependent returns to cash based on the competitive strategy concept of strategic deterrence. Tests for both …

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Data Preparation For Social Network Mining And Analysis, Yazhe Wang Dec 2014

Data Preparation For Social Network Mining And Analysis, Yazhe Wang

Dissertations and Theses Collection (Open Access)

This dissertation studies the problem of preparing good-quality social network data for data analysis and mining. Modern online social networks such as Twitter, Facebook, and LinkedIn have rapidly grown in popularity. The consequent availability of a wealth of social network data provides an unprecedented opportunity for data analysis and mining researchers to determine useful and actionable information in a wide variety of fields such as social sciences, marketing, management, and security. However, raw social network data are vast, noisy, distributed, and sensitive in nature, which challenge data mining and analysis tasks in storage, efficiency, accuracy, etc. Many mining algorithms cannot …

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Measuring Student Performance And Providing Feedback Using Competency Framework, Joelle Elmaleh, Venky Shankararaman Dec 2014

Measuring Student Performance And Providing Feedback Using Competency Framework, Joelle Elmaleh, Venky Shankararaman

Research Collection School Of Computing and Information Systems

A number of Computer Science and Information Systems programs have effectively defined learning outcomes, course level competencies, and conducted assessments at the program level to determine areas for continuous improvement. However, many of these programs do not fully leverage the course competencies during the actual delivery and assessment of the course. This paper presents how course competencies can be used to effectively deliver and assess the course content, and give valuable timely feedback to the students. Using a large first year core course of the BSc (Information Systems Management) program (called Object Oriented Application Development course-OOAD) as an example, this …

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