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Articles 661 - 690 of 3153
Full-Text Articles in Business
We Are On The Way: Analysis Of On-Demand Ride-Hailing Systems, Guiyun Feng, Guangwen Kong, Zizhuo Wang
We Are On The Way: Analysis Of On-Demand Ride-Hailing Systems, Guiyun Feng, Guangwen Kong, Zizhuo Wang
Research Collection Lee Kong Chian School Of Business
Problem definition: Recently, there has been a rapid rise of on-demand ride-hailing platforms, such as Uber and Didi, which allow passengers with smartphones to submit trip requests and match them to drivers based on their locations and drivers’ availability. This increased demand has raised questions about how such a new matching mechanism will affect the efficiency of the transportation system—in particular, whether it will help reduce passengers’ average waiting time compared with traditional street-hailing systems. Academic/practical relevance: The on-demand ride-hailing problem has gained much academic interest recently. The results we find in the ride-hailing system have a significant …
Habitual Entrepreneurship In Digital Platform Ecosystems: A Time-Contingent Model Of Learning From Prior Software Project Experiences, Terence Fan, Andreas Schwab, Xuesong Geng
Habitual Entrepreneurship In Digital Platform Ecosystems: A Time-Contingent Model Of Learning From Prior Software Project Experiences, Terence Fan, Andreas Schwab, Xuesong Geng
Research Collection Lee Kong Chian School Of Business
The emergence of large-scale digital platforms such as Facebook, Google Play and Apple App Store around 2008 has created opportunities for independent entrepreneurs to offer their self-developed software applications (“apps”) to large groups of platform users. The development and release of tens of thousands of apps by thousands of independent developers has created dynamic entrepreneurial ecosystems. This paper investigates whether and how learning by independent habitual entrepreneurs unfolds in substantively different ways in such dynamic platform-based environments. We argue that in these entrepreneurial ecosystems, the timing of learning efforts becomes essential. For Facebook app developers, we find that learning from …
Towards Better Data Augmentation Using Wasserstein Distance In Variational Auto-Encoder, Zichuan Chen, Peng Liu
Towards Better Data Augmentation Using Wasserstein Distance In Variational Auto-Encoder, Zichuan Chen, Peng Liu
Research Collection Lee Kong Chian School Of Business
VAE, or variational auto-encoder, compresses data into latent attributes, and generates new data of different varieties. VAE based on KL divergence has been considered as an effective technique for data augmentation. In this paper, we propose the use of Wasserstein distance as a measure of distributional similarity for the latent attributes, and show its superior theoretical lower bound (ELBO) compared with that of KL divergence under mild conditions. Using multiple experiments, we demonstrate that the new loss function exhibits better convergence property and generates artificial images that could better aid the image classification tasks.
Can Employers Justify Paying Workers Who Return To The Office More Than Those Who Work From Home?, Jared Nai
Can Employers Justify Paying Workers Who Return To The Office More Than Those Who Work From Home?, Jared Nai
Research Collection Lee Kong Chian School Of Business
Employers have strong grounds to do so but should avoid differentiating for wrong reasons like presenteeism, Singapore Management University’s Jared Nai says.
Greenwashing: Evidence From Hedge Funds, Hao Liang, Lin Sun, Melvyn Teo
Greenwashing: Evidence From Hedge Funds, Hao Liang, Lin Sun, Melvyn Teo
Research Collection Lee Kong Chian School Of Business
We find that a non-trivial number of hedge funds that endorse the United Nations Principles for Responsible Investment indulge in greenwashing. Hedge funds that greenwash underperform both genuinely green and nongreen funds after adjusting for risk. Consistent with an agency explanation, greenwashers (i) underperform more when incentive alignment is poor, (ii) trigger more regulatory violations, and (iii) report more suspicious returns. By exploiting regulatory reforms that aim to enhance stewardship and curb greenwashing, we provide causal evidence that relates agency problems to greenwashing and fund underperformance. Investors, however, do not appear to discriminate between greenwashers and genuinely green funds.
Actions Define A Character: Assessment Centers As Behavior-Focused Personality Measures, Anna Luca Heimann, Pia V. Ingold, Filip Lievens, Klaus G. Melchers, Gert Keen, Martin Kleinmann
Actions Define A Character: Assessment Centers As Behavior-Focused Personality Measures, Anna Luca Heimann, Pia V. Ingold, Filip Lievens, Klaus G. Melchers, Gert Keen, Martin Kleinmann
Research Collection Lee Kong Chian School Of Business
To expand our knowledge of personality assessment, this study connects research and theory related to two common selection methods: assessment centers (ACs) and personality inventories. We examine the validity of personality-based AC ratings within a multi-method framework. Drawing from the self-other knowledge asymmetry model (Vazire, 2010), we propose that AC ratings are suited to capture personality traits that are observable in social interactions, whereas other methods (i.e., self-ratings) are useful to assess more internal traits. We obtained data from two personality-based ACs, self- and other-rated personality inventories, and supervisor ratings of job performance. Confirmatory factor analyses indicated that personality-based AC …
Regeneration First, Simon J.D. Schillebeeckx, Ryan Knowles Merrill
Regeneration First, Simon J.D. Schillebeeckx, Ryan Knowles Merrill
Research Collection Lee Kong Chian School Of Business
30 years of "corporate sustainability" has left our earth in a dire state. Biodiversity loss, planetary fever, floods, wildfires, droughts, melting ice caps, dying corals… the list goes on. We need a new approach. I’m sure you heard about a carbon footprint. It is the sum of all the actions we take that have a negative impact on the planet. We consume electricity, we drive to work, we fly to our holiday destination, we waste food and plastic and so on. All these actions create a negative impact that can be expressed in CO2 equivalent. The more CO2 ends up …
Monetary Policy Surprises, Stock Returns, And Financial And Liquidity Constraints, In An Exchange Rate Monetary Policy System, John M. Sequeira
Monetary Policy Surprises, Stock Returns, And Financial And Liquidity Constraints, In An Exchange Rate Monetary Policy System, John M. Sequeira
Research Collection Lee Kong Chian School Of Business
This study examines the impact of monetary policy surprises on the stock price behaviour of a small developed economy, whose monetary policy is based on the exchange rate. We find that monetary policy surprises associated with all contractionary policy levers and a neutral policy lever, have a consistently significant and negative impact on stock returns. In comparison, only monetary policy surprises associated with a downward re-centering policy lever, has a significantly positive effect on stock returns. Using a recalibrated classification system, we also find that monetary policy surprises differ across sectors of the economy. Our results show how monetary policy …
Case Study: National Library Board Singapore: Delivering Cost-Effective Service Excellence Through Innovation And People, Jochen Wirtz, Thomas Menkhoff
Case Study: National Library Board Singapore: Delivering Cost-Effective Service Excellence Through Innovation And People, Jochen Wirtz, Thomas Menkhoff
Research Collection Lee Kong Chian School Of Business
The National Library Board (NLB) Singapore is a statutory board that managed to become a serial innovator. Its globally leading innovations in the library context include shelf-reading robots, and even entirely self-service libraries. NLB’s consistent focus on excellent service delivery reinforced its commitment to innovation. Key levers were effective strategic leadership, a smart innovation strategy that made heavy use of technology — such as app-delivered self-service technologies, crowdsourcing, and robotics — as well as a people-centric staff culture. NLB managed to co-create attractive libraries of the future together with different types of community members, such as volunteers and corporations, ushering …
Accounting And Finance Lessons In The Time Of Covid-19 – Views From The Pacific Basin, Kuan Yong David Ding, Julie Harrison, Martien Lubberink, Chris Van Staden
Accounting And Finance Lessons In The Time Of Covid-19 – Views From The Pacific Basin, Kuan Yong David Ding, Julie Harrison, Martien Lubberink, Chris Van Staden
Research Collection Lee Kong Chian School Of Business
The COVID-19 pandemic is expected to create the worst economic recession in our lifetime and generate “enormous damage to our health, jobs, and well-being” (OECD, 2020). This special issue focuses on the lessons for accounting and finance policy-makers, practitioners, and academics as a result of the social and economic turmoil that arose in the immediate period following the World Health Organization’s declaration of a pandemic (WHO, 2020). Governments responded to support businesses and economies using various policy tools to support markets, businesses and individuals impacted by the pandemic. It is timely to consider the extent to which policymakers and standard-setters …
Just Because You're Powerless Doesn't Mean They Aren't Out To Get You: Low Power, Paranoia, And Aggression, Michael Schaerer, Trevor Foulk, Christilene Du Plessis, Min Hsuan Tu, Satish Krishnan
Just Because You're Powerless Doesn't Mean They Aren't Out To Get You: Low Power, Paranoia, And Aggression, Michael Schaerer, Trevor Foulk, Christilene Du Plessis, Min Hsuan Tu, Satish Krishnan
Research Collection Lee Kong Chian School Of Business
Due to its pervasive negative consequences, failing to understand the origins of paranoia can be costly for organizations. Prior research suggests that powerful employees are particularly likely to experience paranoia as others want to exploit the resources they control, implying that employees low in power should feel less paranoid. In contrast, we build on Conservation of Resources Theory and sociocultural perspectives of power to argue that the inherent vulnerability associated with being low power also evokes paranoia as a protection mechanism. Because paranoia causes employees to form malevolent attributions towards others, we predict that paranoia, in turn, leads to aggressive …
Ambivalent Bosses: An Examination Of Supervisor Expressed Emotional Ambivalence On Subordinate Task Engagement, Jia Hui Lim, Kenneth Tai, Maryam Kouchaki
Ambivalent Bosses: An Examination Of Supervisor Expressed Emotional Ambivalence On Subordinate Task Engagement, Jia Hui Lim, Kenneth Tai, Maryam Kouchaki
Research Collection Lee Kong Chian School Of Business
Supervisors often have to manage conflicting and contradictory demands in increasingly dynamic work environments. In the process of doing so, they may express emotional ambivalence observed by subordinates. Drawing on emotions as social information (EASI) theory and research on unpredictability and stress, we examine when and why supervisor expressed emotional ambivalence influence subordinate outcomes. In two studies, we find that supervisor expressed emotional ambivalence is indirectly related to subordinate task engagement via supervisor unpredictability (Studies 1 and 2). In addition, supervisor unpredictability and anticipated stress serially mediate the effect of supervisor expressed emotional ambivalence on task engagement (Studies 3 and …
The Impact Of Concession Patterns On Negotiations: When And Why Decreasing Concessions Lead To A Distributive Disadvantage, Kian Siong Tey, Michael Schaerer, Nikhil Madan, Roderick I. Swaab
The Impact Of Concession Patterns On Negotiations: When And Why Decreasing Concessions Lead To A Distributive Disadvantage, Kian Siong Tey, Michael Schaerer, Nikhil Madan, Roderick I. Swaab
Research Collection Lee Kong Chian School Of Business
We propose that making a series of decreasing concessions (e.g., $1,500–1,210–1,180–1,170) signals that negotiators are reaching their limit and that this results in a negotiation disadvantage for offer recipients. Although we find that most negotiators do not use this strategy naturally, seven studies (N = 2,311) demonstrate that decreasing concessions causes recipients to make less ambitious counteroffers (Studies 1–5) and reach worse deals (Study 2) in distributive negotiations. We find that this disadvantage occurs because decreasing concessions shape recipients’ expectations of the subsequent offers that will be made, which results in inflated perceptions of the counterparts’ reservation price relative …
Competition And Cheating: Investigating The Role Of Moral Awareness, Moral Identity, And Moral Elevation, Abhijeet K. Vadera, Chandra Shekhar Pathki
Competition And Cheating: Investigating The Role Of Moral Awareness, Moral Identity, And Moral Elevation, Abhijeet K. Vadera, Chandra Shekhar Pathki
Research Collection Lee Kong Chian School Of Business
Competition can lead individuals to cheat; yet our knowledge of why competition affects cheating and how to mitigate these effects is limited. To address this limitation, we first contrast two theories: arousal theories of competition (via desire to win) and social cognitive theory (via impaired moral awareness). Our results were consistent with social cognitive theory in that competition impairs moral awareness and that this impairment explains why people cheat. We therefore build on social cognitive theory and show that two factors, moral identity and moral elevation, which are likely to make morality salient, moderated the effects of competition on cheating …
The Old Boys Club In New Zealand Listed Companies, Chen Chen, David K. Ding, William R. Wilson
The Old Boys Club In New Zealand Listed Companies, Chen Chen, David K. Ding, William R. Wilson
Research Collection Lee Kong Chian School Of Business
The board of directors plays an important role in implementing corporate governance in the firm, as directors have a fiduciary duty to the firm’s shareholders. The effectiveness of directors is a key determinant of corporate value and they need to bring a range of skills and experience to the boardroom. This skill and experience cannot be developed solely within the firm, and most boards incorporate non-executive directors who are or have been directors of other firms. Current research on the benefits of interlocking directorships is mixed between the claim that they bring outside feedback to the table and open decision …
Online Review Solicitations Reduce Extremity Bias In Online Review Distributions And Increase Their Representativeness, Hülya Karaman
Online Review Solicitations Reduce Extremity Bias In Online Review Distributions And Increase Their Representativeness, Hülya Karaman
Research Collection Lee Kong Chian School Of Business
Representative online customer reviews are critical to the effective functioning of the Internet economy. In this study, I investigate the representativeness of online review distributions to examine how extremity bias and conformity impact it, and explore whether online review solicitations alter representativeness. Past research on extreme distribution of online ratings commonly relied solely on observed public online ratings. One strength of the current paper is that I observe the private satisfaction ratings of customers regardless of whether they choose to write an online review or not. I show that both extremity bias and conformity exist in unsolicited online word-of-mouth (WOM) …
Are Disagreements Agreeable? Evidence From Information Aggregation, Dashan Huang, Jiangyuan Li, Liyao Wang
Are Disagreements Agreeable? Evidence From Information Aggregation, Dashan Huang, Jiangyuan Li, Liyao Wang
Research Collection Lee Kong Chian School Of Business
Disagreement measures are known to predict cross-sectional stock returns but fail to predict market returns. This paper proposes a partial least squares disagreement index by aggregating information across individual disagreement measures and shows that this index significantly predicts market returns both in- and out-of-sample. Consistent with the theory in Atmaz and Basak (2018), the disagreement index asymmetrically predicts market returns with greater power in high-sentiment periods, is positively associated with investor expectations of market returns, predicts market returns through a cash flow channel, and can explain the positive volume-volatility relationship.
Experience Base, Strategy-By-Doing And New Product Performance, Liang Chen, Mengmeng Wang, Lin Cui, Sali Li
Experience Base, Strategy-By-Doing And New Product Performance, Liang Chen, Mengmeng Wang, Lin Cui, Sali Li
Research Collection Lee Kong Chian School Of Business
Research Summary Strategy research views firms' diverse experience base as critical to new product success. It also champions strategy-by-doing in entrepreneurial settings. This study juxtaposes and bridges these two perspectives to better understand product development. We propose that while a firm's product portfolio diversity contributes to new product success only to a certain degree, design iteration-a postlaunch strategy-by-doing approach-is positively associated with new product performance. Our core contribution points to a complementary relationship: strategy-by-doing helps mitigate the capacity constraints problem that prevents firms from successfully adapting product development capabilities to a dynamic market. Our analysis of a sample of 2,182 …
Information Avoidance And Medical Screening: A Field Experiment In China, Yufeng Li, Juanjuan Meng, Changcheng Song, Kai Zheng
Information Avoidance And Medical Screening: A Field Experiment In China, Yufeng Li, Juanjuan Meng, Changcheng Song, Kai Zheng
Research Collection Lee Kong Chian School Of Business
Will individuals, especially high-risk individuals, avoid a disease test because of information avoidance? We conduct a field experiment to investigate this issue. We vary the price of a diabetes test (price experiment) and offer both a diabetes test and a cancer test (disease experiment) after eliciting participants’ subjective beliefs about their disease risk. We find evidence that, first, some people avoid the test even when there is neither a monetary nor a transaction cost, and second, both low- and high-risk individuals select out of the test as the price increases. We explain our findings using three classes of models of …
Building Digital-Ready Culture, Richard Raymond Smith
Building Digital-Ready Culture, Richard Raymond Smith
Research Collection Lee Kong Chian School Of Business
The rapid change to digital and remote working in organizations around the world has been a great test of human spirit and resilience. Yet, over the weeks and months of meeting and engaging people through cameras and microphones, many have noted that “Things are not quite the same.” While we have replaced the formal physical meetings, the paper-intensive processes, and the auditorium town-hall meetings, many are missing the informal interactions, the social connections, the spontaneous discussions in the day-to-day digital work life. The traditional business handshake has all but disappeared from the planet and many are wondering if it will …
A Unified Market Model For Swaptions And Constant Maturity Swaps, Chyng Wen Tee, Jeroen Kerkhof
A Unified Market Model For Swaptions And Constant Maturity Swaps, Chyng Wen Tee, Jeroen Kerkhof
Research Collection Lee Kong Chian School Of Business
Internal-rate-of-return (IRR) settled swaptions are the main interest rate volatility instruments in the European interest rate markets. Industry practice is to use an approximation formula to price IRR swaptions based on Black model, which is not arbitrage-free. We formulate a unified market model to incorporate both swaptions and constant maturity swaps (CMS) pricing under a single, self-consistent framework. We demonstrate that the model is able to calibrate to market quotes well, and is also able to efficiently price both IRR-settled and swap-settled swaptions, along with CMS products. We use the model to illustrate the difference in implied volatilities for IRR-settled …
Limousine Service Management: Capacity Planning With Predictive Analytics And Optimization, Peng Liu, Ying Chen, Chung-Piaw Teo
Limousine Service Management: Capacity Planning With Predictive Analytics And Optimization, Peng Liu, Ying Chen, Chung-Piaw Teo
Research Collection Lee Kong Chian School Of Business
The limousine service in luxury hotels is an integral component of the whole customer journey in the hospitality industry. One of the largest hotels in Singapore manages a fleet of both in-house and outsourced vehicles around the clock, serving 9,000 trips per month on average. The need for vehicles may scale up rapidly, especially during special events and festive periods in the country. The excess demand is met by having additional outsourced vehicles on standby, incurring millions of dollars of additional expenses per year for the hotel. Determining the required number of limousines by hour of the day is a …
The Impacts Of Ethical Philosophy On The Corporate Hypocrisy Perception And Communication Intentions Toward Csr, Kyujin Shim, Jeong-Nam Kim
The Impacts Of Ethical Philosophy On The Corporate Hypocrisy Perception And Communication Intentions Toward Csr, Kyujin Shim, Jeong-Nam Kim
Research Collection Lee Kong Chian School Of Business
This study investigates how perceptions of corporate hypocrisy from the Corporate Social Responsibility (CSR) activities connect the public’s ethical philosophy to subsequent positive/negative opinion-sharing intention. With special attention to deontology and consequentialism in normative ethics of philosophy, the current study empirically tests a theoretical model of perceived corporate hypocrisy with two causal antecedents (i.e., individual moral philosophy of deontology and consequentialism), and the mediating role of corporate hypocrisy between such antecedents and the publics’ subsequent communication intention (i.e., positive and negative opinion-sharing intentions) toward a firm. Results indicate significant mediation effects of corporate hypocrisy between personal ethical orientations and the …
The Salience Of Choice Fuels Independence: Implications For Self-Perception, Cognition, And Behavior, Kevin Nanakdewa, Shilpa Madan, Krishna Savani, Hazel Rose Markus
The Salience Of Choice Fuels Independence: Implications For Self-Perception, Cognition, And Behavior, Kevin Nanakdewa, Shilpa Madan, Krishna Savani, Hazel Rose Markus
Research Collection Lee Kong Chian School Of Business
More than ever before, people across the world are exposed to ideas of choice and have opportunities to make choices. What are the consequences of this rapidly expanding exposure to the ideas and practice of choice? The current research investigated an unexamined and potentially powerful consequence of this salience of choice: an awareness and experience of independence. Four studies (n = 1,288) across three cultural contexts known to differ in both the salience of choice and the cultural emphasis on independence (the United States, Singapore, and India) provided converging evidence of a link between the salience of choice and independence. …
The Pricing Of Initial Public Offering And Market Efficiency, Chiyachantana N. Chiraphol
The Pricing Of Initial Public Offering And Market Efficiency, Chiyachantana N. Chiraphol
Research Collection Lee Kong Chian School Of Business
This study investigates long-run performance of Thai initial public offerings (IPOs). To examine the longrun performance of Thai IPOs, we compute buy-and-hold abnormal returns and cumulative abnormal returns for two years after the IPOs. We find strong evidence of long run underpricing in Thai market. Specifically, the average buy-and-hold abnormal returns and cumulative abnormal returns are 64.5% and 18.4% respectively. However, our multi-variate analysis does not indicate a strong relation between long-run underperformance and firm-specific factors, such as firm size, firm age, investment banker reputation and firm profitability.
Multi-Period Lot-Sizing With Supplier Selection: Structural Results, Complexity And Algorithms, Meichun Lin, Woonghee Tim Huh, Guohua Wan
Multi-Period Lot-Sizing With Supplier Selection: Structural Results, Complexity And Algorithms, Meichun Lin, Woonghee Tim Huh, Guohua Wan
Research Collection Lee Kong Chian School Of Business
We consider a multi-period lot-sizing problem with multiple products and multiple suppliers. Demand is deterministic and time-varying. The objective is to determine order quantities to minimize the total cost over a finite planning horizon. This problem is strongly NP-hard. For a special case, we extend the classical zero-inventory-ordering principle and solve it by dynamic programming. Based on this new extension, we also develop a heuristic algorithm for the general problem and computationally show that it works well.
Analytics For Hospital Resource Planning: Two Case Studies, Jingui Xie, Weifen Zhuang, Marcus Ang, Mabel C. Chou, Li Luo, David D. Yao
Analytics For Hospital Resource Planning: Two Case Studies, Jingui Xie, Weifen Zhuang, Marcus Ang, Mabel C. Chou, Li Luo, David D. Yao
Research Collection Lee Kong Chian School Of Business
Using real data and process flows from two large hospitals (in Singapore and in Chengdu, China) as cases, we illustrate how to apply certain modeling and optimization techniques, along with simulation as a validation tool, to hospital resource planning problems. We demonstrate how these simple analytical tools can help achieve significant improvements in both patient service and resource utilization, and without the need to increase the overall level of existing capacities. Two resource planning problems are studied in detail, one concerns the re-balancing of bed capacities among various wards, and the other addresses the allocation of medical diagnostic resource among …
Central Counterparty Exposure In Stressed Markets, Wenqian Huang, Albert J. Menkveld, Shihao Yu
Central Counterparty Exposure In Stressed Markets, Wenqian Huang, Albert J. Menkveld, Shihao Yu
Research Collection Lee Kong Chian School Of Business
Time is valuable, particularly in stressed markets. Because central counterparties (CCPs) have become systemically important, we need to understand the dynamics of their exposure toward clearing members at high frequencies. We track such exposure and decompose it, yielding the following insights. The composition of CCP exposure is fundamentally different in the tails. At extreme levels or during rapid increases, there is elevated crowding. This is the result of clearing members all concentrating their positions on a single security or a particular portfolio, which is desirable if motivated by hedging but worrying if due to speculation.
Speed Acquisition, Shiyang Huang, Bart Zhou Yueshen
Speed Acquisition, Shiyang Huang, Bart Zhou Yueshen
Research Collection Lee Kong Chian School Of Business
Speed is a salient feature of modern financial markets. This paper studies investors' speed acquisition together with their information acquisition. Speed heterogeneity arises in equilibrium, fragmenting the information aggregation process with a nonmonotone impact on price informativeness. Various competition effects drive speed and information to be either substitutes or complements. The model cautions the possible dysfunction of price discovery: An improving information technology might complement speed acquisition, which shifts the concentration of price discovery over time, possibly hurting price informativeness. Novel predictions are discussed regarding investor composition and their investment performance.
Hedge Funds And Their Prime Broker Analysts, Sung Gon Chung, Manoj Kulchania, Melvyn Teo
Hedge Funds And Their Prime Broker Analysts, Sung Gon Chung, Manoj Kulchania, Melvyn Teo
Research Collection Lee Kong Chian School Of Business
Are sell-side analysts reluctant to go against the investment views of their hedge funds when these hedge funds are their prime brokerage clients? We show that prime broker analysts tend to upgrade stocks recently bought by their clients. For stocks with upgraded recommendations, post-announcement cumulative abnormal returns are significantly lower for those purchased by the prime brokerage clients. Our results are stronger with high-dollar-turnover clients who generate more trading commissions. We also find that a hedge fund with a large bet on a stock has a stronger incentive to pressure the fund’s prime brokers to issue a favorable recommendation on …