Business Commons^™

The User’S Communication Patterns On A Mobile Social Network Site, Youngsoo Kim

Research Collection School Of Computing and Information Systems

No abstract provided.

India Starts To Open Up, Singapore Management University

Perspectives@SMU

Investors have often shied away from India, citing the difficulties inherent in its notoriously difficult businesss landscape. Yet there is a lot of money to be made in India, Dr S Narayan, Senior Research Fellow of the Institute of South Asian Studies at the National University of Singapore, told Perspectives@SMU. Many companies seem reluctant to carry out sufficient market entry analysis, he says, despite the policy changes now taking place in the world's tenth largest economy.

Medical Tourism : A Serious Business, Singapore Management University

Perspectives@SMU

Significant changes in the globalisation of healthcare creates market with huge potential for growth

As the medical tourism movement grew in popularity over the past decade, Vishal Bali has had a front row seat watching the industry flourish in his role as the Group CEO of Fortis Healthcare Limited, a healthcare provider in the Asia Pacific region. From his vantage point, Bali notes, "There have been significant changes in the forces of globalisation of healthcare patients. The trend is maturing and geographies are shifting. Healthcare providers in different countries are taking strategic positions to compete for the global healthcare consumer …

Movie-Making In Singapore, Singapore Management University

Perspectives@SMU

When the movie Ah Boys to Men broke the record for the highest-grossing Singapore film in December last year, its producers knew they would, at the very least, avoid making a loss. The S$6.03 million collected at the box office up to that point was twice the S$3 million that was spent to make the movie, so one would think its director, Jack Neo, would be laughing all the way to the bank. One would also be wrong ...

Can Hedge Funds Time Liquidity?, Charles Cao, Yong Chen, Bing Liang, Andrew W. Lo

Research Collection BNP Paribas Hedge Fund Centre

We explore a new dimension of fund managers' timing ability by examining whether they can time market liquidity through adjusting their portfolios' market exposure as aggregate liquidity conditions change. Using a large sample of hedge funds, we find strong evidence of liquidity timing. A bootstrap analysis suggests that top-ranked liquidity timers cannot be attributed to pure luck. In out-of-sample tests, top liquidity timers outperform bottom timers by 4.0–5.5% annually on a risk-adjusted basis. We also find that it is important to distinguish liquidity timing from liquidity reaction, which primarily relies on public information. Our results are robust to alternative explanations, …

Riskvis: Supply Chain Visualization With Risk Management And Real-Time Monitoring, Rick S. M. Goh, Zhaoxia Wang, Xiaofeng Yin, Xiuju Fu, Loganathan Ponnanbalam, Sifei Lu, Xiaorong Li

Research Collection School Of Computing and Information Systems

With increased complexity, supply chain networks (SCNs) of modern era face higher risks and lower efficiency due to limited visibility. Hence, there is an immediate need to provide end-to-end supply chain visibility for efficient management of complex supply chains. This paper proposes a visualization scheme based on multi-hierarchical modular design and develops a supply chain visualization platform with risk management and real-time monitoring, named RiskVis, for realizing better Supply Chain Risk Management (SCRM). A Supply Chain Visualizer (SCV) with a graphical visualization platform is mounted as a part of a SCRM management decision-making dashboard and it provides senior management a …

A Multi-Objective Memetic Algorithm For Vehicle Resource Allocation In Sustainable Transportation Planning, Hoong Chuin Lau, Lucas Agussurja, Shih-Fen Cheng, Pang Jin Tan

Research Collection School Of Computing and Information Systems

Sustainable supply chain management has been an increasingly important topic of research in recent years. At the strategic level, there are computational models which study supply and distribution networks with environmental considerations. At the operational level, there are, for example, routing and scheduling models which are constrained by carbon emissions. Our paper explores work in tactical planning with regards to vehicle resource allocation from distribution centers to customer locations in a multi-echelon logistics network. We formulate the bi-objective optimization problem exactly and design a memetic algorithm to efficiently derive an approximate Pareto front. We illustrate the applicability of our approach …

Interacting Knapsack Problem In Designing Resource Bundles, Truong Huy D. Nguyen, Pradeep Reddy Varakantham, Hoong Chuin Lau, Shih-Fen Cheng

Research Collection School Of Computing and Information Systems

In many real-life businesses, the service provider/seller keeps a log of the visitors’ behavior as a way to assess the efficiency of the current business/operation model and find room for improvement. For example, by tracking when visitors entering attractions in a theme park, theme park owners can detect when and where congestion may occur, thus having contingency plans to reroute the visitors accordingly. Similarly, a Cable TV service provider can track channel switching events at each household to identify uninteresting channels. Subsequently, the repertoire of channels up for subscription can evolve over time to better serve the entertainment demand of …

“Network-Theoretic” Queuing Delay Estimation In Theme Park Attractions, Ajay Aravamudhan, Archan Misra, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

Queuing is a common phenomenon in theme parks which negatively affects visitor experience and revenue yields. There is thus a need for park operators to infer the real queuing delays without expensive investment in human effort or complex tracking infrastructure. In this paper, we depart from the classical queuing theory approach and provide a data-driven and online approach for estimating the time-varying queuing delays experienced at different attractions in a theme park. This work is novel in that it relies purely on empirical observations of the entry time of individual visitors at different attractions, and also accommodates the reality that …

Improving Patient Length-Of-Stay In Emergency Department Through Dynamic Resource Allocation Policies, Kar Way Tan, Wei Hao Tan, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

In this work, we consider the problem of allocating doctors in the ambulatory area of a hospital's emergency department (ED) based on a set of policies. Traditional staffing methods are static, hence do not react well to surges in patient demands. We study strategies that intelligently adjust the number of doctors based on current and historical information about the patient arrival. Our main contribution is our proposed data-driven online approach that performs adaptive allocation by utilizing historical as well as current arrivals by running symbiotic simulation in real-time. We build a simulation prototype that models ED process that is close …

Robust Median Reversion Strategy For On-Line Portfolio Selection, Dingjiang Huang, Junlong Zhou, Bin Li, Steven Hoi, Shuigeng Zhou

Research Collection School Of Computing and Information Systems

On-line portfolio selection has been attracting increasing interests from artificial intelligence community in recent decades. Mean reversion, as one most frequent pattern in financial markets, plays an important role in some state-of-the-art strategies. Though successful in certain datasets, existing mean reversion strategies do not fully consider noises and outliers in the data, leading to estimation error and thus non-optimal portfolios, which results in poor performance in practice. To overcome the limitation, we propose to exploit the reversion phenomenon by robust L₁-median estimator, and design a novel on-line portfolio selection strategy named "Robust Median Reversion" (RMR), which makes optimal …

Investor Reactions To Company Disclosure Of Ceo To Median Employee Compensation Ratio: An Experimental Investigation, Jean Lin Seow, K Kelly

Research Collection School Of Accountancy

Section 953(b) of the Dodd-Frank Act, which is yet to be implemented by the U.S. Securities and Exchange Commission (SEC), requires that public companies disclose the CEO to median employee compensation ratio (hereafter, pay ratio). We conduct an experiment with Singapore MBA students to examine how such pay ratio disclosures influence the judgments of nonprofessional investors. Participants evaluate a hypothetical company given either no pay ratio information (i.e., only CEO compensation as per current SEC regulations) or pay ratio information (i.e., CEO compensation, median employee compensation, and pay ratio, as per Section 953(b)). The company’s pay ratio, when provided, is …

Non-Audit Fees, Institutional Monitoring, And Audit Quality, Chee Yeow Lim, David K. Ding, Charlie Charoenwong

Research Collection School Of Accountancy

We posit that the effect of non-audit fees on audit quality is conditional on the extent of institutional monitoring. We suggest that institutional investors have incentives and the ability to monitor financial reporting quality. Because of the reputation concerns and potential litigation exposure, auditors are likely to provide high audit quality, when they also provide non-audit services to clients, particularly when clients are subject to high institutional monitoring. We find evidence that, as non-audit fees increase, audit quality (measured by performance-adjusted discretionary current accruals and earnings-response coefficients) reduces only for clients with low institutional ownership but not for clients with …

The Effect Of Corporate Tax Avoidance On The Cost Of Equity, Beng Wee Goh, Jimmy Lee, Chee Yeow Lim, Terry Shevlin

Research Collection School Of Accountancy

While prior studies have examined how investors perceive extreme forms of tax avoidance behavior such as tax sheltering and uncertain tax position (e.g., Hanlon and Slemrod 2009; Wilson 2009; Koester 2011; Hutchens and Rego 2012), there is little evidence on how investors perceive less extreme forms of tax avoidance. This study fills this void by examining the relation between firm’s cost of equity and corporate tax avoidance using three measures that capture less extreme forms of corporate tax avoidance: book-tax differences, permanent book-tax differences, and long-run cash effective tax rates. We find that less aggressive forms of corporate tax avoidance …

Work Out Optimum Tax Rates, Benefits For A New Business, Teng Aun Khoo, Clement Tan Kai Guan

Research Collection School Of Accountancy

No abstract provided.

Sustainable Business Models: The Contribution Of Network Organization And Governance Modes, Sudhi Seshadri, Michael Ehret

Research Collection Lee Kong Chian School Of Business

We provide a framework for the design of sustainable business models. While extant literature on business models focuses on unlocking positive externalities, we propose a business model framework that effectively addresses negative externalities. A taxonomy-based on transorganizational models and governance modes - classifies instruments that counsel behaviour patterns. Sustainability strategies that deal with externalities often merge instruments to manage multi-stakeholder responsibilities and exchanges. The framework draws upon three established research themes - network organizational models, governance modes, and instrumental stakeholder theory - to distinguish between six instrument classes. To illustrate its potential for analysis the paper compiles instruments within these …

Evaluating The Effectiveness Of Cooling Measures On Property Prices: An Exploration Of Alternative Econometric Techniques, Kuo Chuen Lee, Sock Yong Phang, Kok Fai Phoon, Karol Wee

Research Collection Lee Kong Chian School Of Business

No abstract provided.

Liquidity And Crises In Asian Equity Markets, Charlie Charoenwong, David K. Ding, Yung Chiang Yang

Research Collection Lee Kong Chian School Of Business

This article presents a discussion of stock market liquidity and its relation to financial crises. It begins by defining liquidity and explaining possible measures of liquidity and then explores factors influencing liquidity. It also analyzes the liquidity among 11 Asian countries. The empirical findings based on the time-series analysis show a sharp decline in stock liquidity during both the 1997-1998 Asian and the recent 2007-2008 global financial crisis. The multivariate regression results show that both stock liquidity and trading activity decrease after large market declines. Stock liquidity responds significantly to large market declines in South Korea and Taiwan whereas it …

Reit To Deal With Hdb Demand-Supply Challenges, Chor Hao Ong, David Kuo Chuen Lee

Research Collection Lee Kong Chian School Of Business

A group of academics from the Singapore Management University (SMU) and a noted property consultant are making the case for a REIT comprising Housing and Development Board (HDB) residential and commercial units.

On Properties Of Discrete (R,Q) And (S,T) Inventory Systems, Marcus Ang, Jing-Sheng Song, Mingzheng Wang, Hanqin Zhang

Research Collection Lee Kong Chian School Of Business

We consider single-item (r, q) and (s, T) inventory systems with integer-valued demand processes. While most of the inventory literature studies continuous approximations of these models and establishes joint convexity properties of the policy parameters in the continuous space, we show that these properties no longer hold in the discrete space, in the sense of linear interpolation extension and L♮-convexity. This nonconvexity can lead to failure of optimization techniques based on local optimality to obtain the optimal inventory policies. It can also make certain comparative properties established previously using continuous variables invalid. We revise these properties in the discrete space.

Do Firms Hedge Optimally? Evidence From An Exogenous Governance Change, Sterling Zhenrui Huang, Urs Peyer, Benjamin Segal

Research Collection School Of Accountancy

We ask whether firms hedge optimally by analyzing the impact the NYSE/NASDAQ listing rule changes have had, which exogenously imposed board composition changes on a subset of firms, on financial risk management. Using new proxies for the extent of financial risk management in non-financial firms we find that treated firms reduce their financial hedging, in a difference-in-difference framework. The reduction is concentrated in firms with higher conflicts of interests, such as a high CEO equity ownership level, which exposes them to more idiosyncratic risk, and a higher occurrence of option backdating. We reject the hypothesis that newly majority-independent boards reduce …

Fostering An Analytics Culture, Gary Shan Chi Pan

Research Collection School Of Accountancy

No abstract provided.

Visual Representation Of Accounting Standards, Pearl Hock Neo Tan, Chu Yeong Lim

Research Collection School Of Accountancy

No abstract provided.

Internal Governance And Real Earnings Management, Qiang Cheng, Jimmy Lee, Terry J. Shevlin

Research Collection School Of Accountancy

We examine whether internal governance affects the extent of real earnings management. Internal governance refers to the process through which key subordinate executives provide checks and balances in the organization and affect corporate decisions. Using the number of years to retirement to capture key subordinate executives’ incentives and using their compensation relative to CEO compensation to capture their influence within the firm, we find that the extent of real earnings management decreases with key subordinate executives’ horizon and influence. In cross-sectional analyses, we find that the impact of internal governance is more important for firms with more complex operations where …

Governance Of Financial Reporting, Poh Sun Seow, Gary Pan

Research Collection School Of Accountancy

No abstract provided.

Getting Your Accounting Right, Themin Suwardy, Jiwei Wang

Research Collection School Of Accountancy

The book brings together authors from the industry and the academic world to contribute articles on the topic of high quality financial reporting. The objective is to help business directors and accounts preparers to understand the importance of high quality financial reporting to their business and get it right from the start.

Making Accounting Productive, Themin Suwardy

Research Collection School Of Accountancy

No abstract provided.

Academic Paper Supports Housing Curbs For Prs, Foreigners, Mindy Tan, David Kuo Chuen Lee

Research Collection Lee Kong Chian School Of Business

No abstract provided.

Testing For Multiple Bubbles 1: Historical Episodes Of Exuberance And Collapse In The S&P 500, Peter C. B. Phillips, Shu-Ping Shi, Jun Yu

Research Collection School Of Economics

Recent work on econometric detection mechanisms has shown the effectiveness of recursive procedures in identifying and dating financial bubbles. These procedures are useful as warning alerts in surveillance strategies conducted by central banks and fiscal regulators with real time data. Use of these methods over long historical periods presents a more serious econometric challenge due to the complexity of the nonlinear structure and break mechanisms that are inherent in multiple bubble phenomena within the same sample period. To meet this challenge the present paper develops a new recursive flexible window method that is better suited for practical implementation with long …

Housing Policies In Singapore: Evaluation Of Recent Proposals And Recommendations For Reform, Sock Yong Phang, David Kuo Chuen Lee, Alan Cheong, Kok Fai Phoon, Karol Wee

Research Collection School Of Economics

The Singapore housing market is unusual in its high homeownership rate, the dominance of HDB housing, and the extensive intervention of the government in regulating housing supply and demand in both the HDB and private housing sectors. Recent rapid population increases in a low interest rate and high global liquidity environment has resulted in accelerated house prices increases in Singapore. Earlier this year, the government launched “Our Singapore Conversation” of which discussion on housing policies constitutes one major component. This “conversation” comes in the wake of several consecutive rounds of measures to stabilize housing prices using various instruments. This paper …