Social and Behavioral Sciences Commons^™

Bubble Testing Under Deterministic Trends, Xiaohu Wang, Jun Yu

Research Collection School Of Economics

This paper develops the asymptotic theory of the ordinary least squares estimator of the autoregressive (AR) coefficient in various AR models, when data is generated from trend-stationary models in different forms. It is shown that, depending on how the autoregression is specified, the commonly used right-tailed unit root tests may tend to reject the null hypothesis of unit root in favor of the explosive alternative. A new procedure to implement the right-tailed unit root tests is proposed. It is shown that when the data generating process is trend-stationary, the test statistics based on the proposed procedure cannot find evidence of …

Non-Separable Models With High-Dimensional Data, Liangjun Su, Takuya Ura, Yichong Zhang

Research Collection School Of Economics

This paper studies non-separable models with a continuous treatment when the dimension of the control variables is high and potentially larger than the effective sample size. We propose a three-step estimation procedure to estimate the average, quantile, and marginal treatment effects. In the first stage we estimate the conditional mean, distribution, and density objects by penalized local least squares, penalized local maximum likelihood estimation, and penalized conditional density estimation, respectively, where control variables are selected via a localized method of L1-penalization at each value of the continuous treatment. In the second stage we estimate the average and the marginal distribution …

Preferences With Changing Ambiguity Aversion, Jingyi Xue

Research Collection School Of Economics

This paper provides two equivalent representations for thegeneral class of uncertainty averse preferences studied by Cerreia-Vioglio,Maccheroni, Marinacci and Montrucchio (2011). The two representations employrespectively two important extensions of Gilboa and Schmeidler (1989)’s maxmindecision rule. The first is a weighted maxmin representation with anon-constant weight used in mixing the minimum and maximum expected utilities.The second is a variant constraint representation which evaluates a prospect bythe worst expected utility over a neighborhood of approximating priors wherethe size of the neighborhood depends on the prospect. The equivalent representationshave advantage in several respects. In the second part of this paper, we studythe wealth effect …

Fair Division With Uncertain Needs, Jingyi Xue

Research Collection School Of Economics

Imagine that agents have uncertain needs and a resource must be divided before uncertainty resolves. In this situation, waste typically occurs when the assignment to an agent turns out to exceed his realized need. How should the resource be divided in the face of possible waste? This is a question out of the scope of the existing rationing literature. Our main axiom to address the issue is no domination. It requires that no agent receive more of the resource than another while producing a larger expected waste, unless the other agent has been fully compensated. Together with conditional strict endowment …

Adaptive Estimation Of Continuous-Time Regression Models Using High-Frequency Data, Jia Li, Viktor Todorov, George Tauchen

Research Collection School Of Economics

We derive the asymptotic efficiency bound for regular estimates of the slope coefficient in a linear continuous-time regression model for the continuous martingale parts of two Itô semimartingales observed on a fixed time interval with asymptotically shrinking mesh of the observation grid. We further construct an estimator from high-frequency data that achieves this efficiency bound and, indeed, is adaptive to the presence of infinite-dimensional nuisance components. The estimator is formed by taking optimal weighted average of local nonparametric volatility estimates that are constructed over blocks of high-frequency observations. The asymptotic efficiency bound is derived under a Markov assumption for the …

Indigenous Community Preferences For Electricity Services: Evidence From A Choice Experiment In Sarawak, Malaysia, Terry Van Gevelt, C. Canales Holzeis, F. George, T. Zaman

Research Collection College of Integrative Studies

Providing indigenous communities with electricity services requires an understanding of preferences to ensure that electrification schemes are congruent with the communities’ specific development pathways. We contribute to the literature by using a choice experiment to rank and quantify household preferences for electricity services in two indigenous villages in Sarawak, Malaysia. Specifically, we disaggregated electricity services into five attributes: private use for household appliances and lighting, public use for community facilities, productive use for income generation, the operator model and the monthly tariff. We found that the most value was placed on the operator-model underpinning the provision of electricity services and …

Domestic Liquidity Conditions And Monetary Policy In Singapore, Hwee Kwan Chow-Tan

Research Collection School Of Economics

Singapore has an unusual exchange rate-centered monetary policy framework that has served the economy well over the past decades. Monetary policy operations are carried out by the central bank through the management of the Singapore dollar against a currency basket. As is well recognized, such foreign exchange interventions do have an impact on domestic liquidity conditions. However, in the case of Singapore, this tends to be counteracted by the liquidity impact of public sector operations related to the fiscal position and the national pension scheme. The central bank takes into account the net liquidity impact these and other autonomous money …

Motivations To Seek Science Videos On Youtube: Free-Choice Learning In A Connected Society, Sonny Rosenthal

Research Collection College of Integrative Studies

Do individuals use video sharing sites in their free time to learn about science, and if so, why? This study takes a preliminary look at individual differences that motivate online science video seeking. Among 273 Singapore Internet users who participated in an online survey, most reported using YouTube during the previous week, and one-third reported using it to watch science videos. Hierarchical regression analysis explained 55% of the variance in their intention to seek science videos during the subsequent week. Significant predictors of interest were seeking-related subjective norm, enjoyment of science, and informational use of YouTube. Although these results do …

The Building Data Genome Project: An Open, Public Data Set From Non-Residential Building Electrical Meters, Clayton Miller, Forrest Meggers

Research Collection College of Integrative Studies

As of 2015, there are over 60 million smart meters installed in the United States; these meters are at the forefront of big data analytics in the building industry. However, only a few public data sources of hourly non-residential meter data exist for the purpose of testing algorithms. This paper describes the collection, cleaning, and compilation of several such data sets found publicly on-line, in addition to several collected by the authors. There are 507 whole building electrical meters in this collection, and a majority are from buildings on university campuses. This group serves as a primary repository of open, …

Susilo Bambang Yudhoyono [Indonesia, President], Susilo Bambang Yudhoyono

Digital Narratives of Asia

The sixth President of Indonesia, Susilo Bambang Yudhoyono, tells DNA about how he handled the three economic crises and two political challenges during his two-term presidency. He stresses the importance of maintaining good personal relationships with international leaders, especially among ASEAN countries, highlighting three success factors and his hope for ASEAN.

George Yeo [Singapore, Minister Of Foreign Affairs], George Yeo

Digital Narratives of Asia

George Yeo, former Minister of Foreign Affairs who became a business leader, speaks to DNA about his philosophical Taoist worldview, the impact of the rise of China, and the challenges facing ASEAN at its 50th year. He talks on how the soft power of ASEAN's policy of non-interference has yield some successes.

Belt, Road, And The Xinjiang Issue, Singapore Management University

Perspectives@SMU

The Belt Road Initiative promises economic development for China’s westernmost province but reality on the ground is less promising

Cooperation Is Key To Building China’S Bay Area, Singapore Management University

Perspectives@SMU

Guangdong-Hong Kong-Macao Greater Bay Area is expected to surpass the Tokyo Bay Area or San Francisco Bay Area in ten years, if the cities in the region can leverage their strengths, streamline their coordination mechanism and speed up the economy integration,” said Dr. Tse Kwok-leung, who currently serves as head of Economics and Policy Research at the Bank of China (Hong Kong) Limited. Dr. Tse was speaking at a seminar themed “How to Build a World-class Guangdong-Hong Kong-Macao Greater Bay Area” organized by the Hong Kong General Chamber of Commerce in July 2017.

What If Bots Collide And Collude In Setting Prices?, Singapore Management University

Perspectives@SMU

Conduct driven by algorithms is a challenge for competition law

Why Is Workplace Bullying So Widespread And Rising?, Singapore Management University

Perspectives@SMU

Pressure, disorganisation and regulatory failure are red flags

Essays On Transportation Cost, Social Security Retirement Income And Housing Market, Naqun Huang

Dissertations and Theses Collection

This dissertation comprises three papers that study how transportation cost affect price distribution across a city, how home equity affects the timing of pension withdrawal, and potential implications of macroprudential policies on the price informativeness. Specifically, the first paper examines how a change in the cost of car ownership affects housing price gradient with respect to distance from the central business district (CBD) in Singapore. The second paper investigates how household home equity affect the timing of claiming Social Security Retirement Income (SSRI) in the United States. The third paper explores how countercyclical policies in Singapore real estate market affect …

On Random Assignment Problems, Peng Liu

Dissertations and Theses Collection

This dissertation studies the standard random assignment problem (Bogomolnaia and Moulin (2001)) and investigates the scope of designing a desirable random assignment rule. Specifically, I ask the following two questions:

1. Is there a reasonably restricted domain of preferences on which there exists an strategy-sd-efficient proof, sd-efficient and sd-envy-free or equal-treatment-of-equals rule?

2. Moreover, if the answer is in the affirmative, what is that rule?

As a starting point, attention is restricted to the connected domains (Monjardet (2009)). It is shown that if a connected domain admits a desirable random assignment rule, it is structured in a specific way: a …

Measuring Fine-Grained Metro Interchange Time Via Smartphones, Weixi Gu, Kai Zhang, Zimu Zhou, Ming Jin, Yuxun Zhou, Xi Liu, Costas J. Spanos, Zuo-Jun (Max) Shen, Wei-Hua Lin, Lin Zhang

Research Collection School Of Computing and Information Systems

High variability interchange times often significantly affect the reliability of metro travels. Fine-grained measurements of interchange times during metro transfers can provide valuable insights on the crowdedness of stations, usage of station facilities and efficiency of metro lines. Measuring interchange times in metro systems is challenging since agentoperated systems like automatic fare collection systems only provide coarse-grained trip information and popular localization services like GPS are often inaccessible underground. In this paper, we propose a smartphone-based interchange time measuring method from the passengers’ perspective. It leverages low-power sensors embedded in modern smartphones to record ambient contextual features, and utilizes a …

Smartphone Sensing Meets Transport Data: A Collaborative Framework For Transportation Service Analytics, Yu Lu, Archan Misra, Wen Sun, Huayu Wu

Research Collection School Of Computing and Information Systems

We advocate for and introduce TRANSense, a framework for urban transportation service analytics that combines participatory smartphone sensing data with city-scale transportation-related transactional data (taxis, trains etc.). Our work is driven by the observed limitations of using each data type in isolation: (a) commonly-used anonymous city-scale datasets (such as taxi bookings and GPS trajectories) provide insights into the aggregate behavior of transport infrastructure, but fail to reveal individual-specific transport experiences (e.g., wait times in taxi queues); while (b) mobile sensing data can capture individual-specific commuting-related activities, but suffers from accuracy and energy overhead challenges due to usage artefacts and lack …

Real-Time Influence Maximization On Dynamic Social Streams, Yanhao Wang, Qi Fan, Yuchen Li, Kian-Lee Tan

Research Collection School Of Computing and Information Systems

Influence maximization (IM), which selects a set of k users(called seeds) to maximize the influence spread over a social network, is a fundamental problem in a wide range of applications such as viral marketing and network monitoring.Existing IM solutions fail to consider the highly dynamic nature of social influence, which results in either poor seed qualities or long processing time when the network evolves.To address this problem, we define a novel IM query named Stream Influence Maximization (SIM) on social streams.Technically, SIM adopts the sliding window model and maintains a set of k seeds with the largest influence value over …

Managing Sensor Systems For Early Detection Of Mild Cognitive Impairment In Community Elderly: Lessons Learned And Future Work, Boon Thai Ng, Hwee-Pink Tan, Hwee Xian Tan

Research Collection School Of Computing and Information Systems

The aging population is a pertinent issue faced by governments globally. One of the most common and costly health issues associated with the aging population is cognitive decline, leading up to dementia. In this paper, we describe a non-intrusive, continuous and scalable system for early detection of Mild Cognitive Impairment (MCI) in the elderly, which enables early medical interventions to be provided. We focus on the system design and feature extraction of the sensor system, to validate our hypothesis of the use of sensor systems for early detection of MCI. Lessons learned from deploying the sensor system is presented, together …

The Role Of Knowledge Sharing Via Organizational Social Media In The Workplace, Murad A. Moqbel, Fiona Fui-Hoon Nah

Research Collection School Of Computing and Information Systems

Although a plethora of studies have been recently conducted on organizational social media, little research has specifically examined how organizational social media can contribute to organizational workers’ performance through knowledge sharing. The objective of this research is to fill this gap by investigating the role of knowledge sharing in organizational social media use and its effect on in-role and innovative performance through the lens of social capital and social cognitive theories. Hypotheses were developed and a survey study is proposed.

The Critical Role Of Mass Media In International Norm Diffusion: The Case Of Undp Human Development Reports, Devin K. Joshi, Roni Kay O'Dell

Research Collection School of Social Sciences

What role does mass media play in the promotion of global norms? We address this question through an analysis of Human Development Reports (HDRs) produced by the United Nations Development Programme. Although HDRs have promoted human development ideology over the past twenty-five years, little is known about how and to what extent their messages have been disseminated to the public. Addressing this gap in the literature, we examine a critical intervening factor in the process of international norm diffusion: political communication via the mass media. Highlighting the importance of framing and agenda setting, we identify four communicative mechanisms that can …

The History Problem: The Politics Of War Commemoration In East Asia, Hiro Saito

Research Collection School of Social Sciences

This essay summarizes my argumentin The History Problem: The Politics of WarCommemoration in East Asia. The historyproblem is essentially a relational phenomenonthat arises when nations promote self-servingversions of the past by focusing on whathappened to their own citizens with littleregard for foreign others. East Asia, however,has recently also witnessed the emergence of acosmopolitan form of commemoration takinghumanity, rather than nationality, as itsprimary frame of reference. Whencosmopolitan commemoration is practiced as acollective endeavor by both perpetrators andvictims, a resolution of the history problem willfinally become possible.

Jokes About Politics: The Good, The Bad And The Ugly, David Chan

Research Collection School of Social Sciences

This essay is about the psychologyof sociopolitical humour. First, letme assure you that writing orreading about humour does not killthe fun, although you may not laughout loud. By humour, I mean a jokeor a funny communication with asocial purpose clear to the audience– to provoke laughter and provideamusement.

Incumbency Advantage And Candidate Characteristics In Open-List Proportional Representation Systems: Evidence From Indonesia, Sebastian Carl Dettman, Thomas B. Pepinsky, Jan H. Pierskalla

Research Collection School of Social Sciences

We use evidence from Indonesia's April 2014 legislative elections to study the relationship between incumbency, list position, candidate characteristics, and electoral success in open-list PR systems. Contrary to a recent literature identifying an incumbency disadvantage in other large developing democracies, we identify a consistent personal incumbency advantage in Indonesia. However, we argue that this advantage is mediated by party choices over how incumbents and newcomers are ranked on party lists, a key heuristic for voters in low-information electoral environments such as Indonesia.

The Case Against Physician-Assisted Suicide And Voluntary Active Euthanasia: A Jurisprudential Consideration, Seow Hon Tan

Research Collection Yong Pung How School Of Law

Twenty years after the Advance Medical DirectiveAct came into force in Singapore, the issue of the legalisation ofphysician-assisted suicide and voluntary active euthanasia remains live. Thisarticle examines the case for legalisation, replying to the points raised inthe article by Toh Puay San and Stanley Yeo, “Decriminalisingphysician-assisted suicide in Singapore” (2010) 22 SAcLJ 379–412, which hadincluded draft legislation in its proposal. It critically discusses thetheoretical underpinnings of such legalisation and argues that the contentionof the authors that the benefits of allowing terminally-ill patients the optionof physician-assisted suicide far outweigh the harms is not supported. Afortiori, voluntary active euthanasia should not be …

China’S Evolving Approach To Environmental And Labour Provisions In Regional Trade Agreements, Henry S. Gao

Research Collection Yong Pung How School Of Law

In this article, the author reviews China’s experience with environmental and labour provisions by looking at its regional trade agreements, especially in terms of the evolution of the Chinese position. It concludes with a projection of how China’s approaches to such provisions might further develop in the future.

Myanmar’S Desperate Need To Escape Clutches Of Fear, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

SMU Associate Professor of Law Eugene Tan opined in a commentary that the recent escalation of the ethnic conflict in Myanmar’s Rakhine State drives home the hard truth that much remains unchanged despite the country’s tentative transition to a democracy. The latest surge in ethno-violence seems timed to coincide with the release of a report last week by an advisory commission led by former United Nations Secretary-General Kofi Annan.Associate Prof Tan noted that the spectre of even more conflict, violence and division will only derail Myanmar’s democratic transition and integration into the international community, to its collective peril. It could …

Aging In Myanmar, John Knodel, Bussarawan Teerawichitchainan

Research Collection School of Social Sciences

This spotlight provides an overview of thesituation of older persons in Myanmar, an under-studied country ofover-50-million population. Myanmar is of particular interest to researchersand policy makers, given its overall level of poverty and modestly rapidpopulation aging. Research on older persons, while increasing in recent years,remains sparse. Empirical evidence indicates that Myanmar older persons are inrelatively poorer health compared to those in neighboring countries. Many livein abject poverty and depend on their families for material support.Coresidence is very common and facilitates reciprocal exchanges acrossgenerations. Looking ahead, Myanmar confronts important challenges includingdemographic shifts that reduce availability of family support for older personsand …