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Articles 4441 - 4470 of 9289

Full-Text Articles in Social and Behavioral Sciences

Random Mechanism Design On Multidimensional Domains, Shurojit Chatterji, Huaxia Zeng Oct 2017

Random Mechanism Design On Multidimensional Domains, Shurojit Chatterji, Huaxia Zeng

Research Collection School Of Economics

We study random mechanism design in an environment where the set of alternatives has a Cartesian product structure. We first show that all generalized random dictatorships are strategy-proof on a minimally rich domain if and only if the domain is a top-separable domain. We next generalize the notion of connectedness (Monjardet, 2009) to establish a particular class of top-separable domains: connected domains, and show that in the class of minimally rich and connected domains, the multidimensional single-peakedness restriction is necessary and sufficient for the design of a flexible random social choice function that is unanimous and strategy-proof. Such a flexible …

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The Long-Term Health Effects Of Fetal Malnutrition: Evidence From The 1959-1961 China Great Leap Forward Famine, Seonghoon Kim, Belton Fleisher, Jessica Ya Sun Oct 2017

The Long-Term Health Effects Of Fetal Malnutrition: Evidence From The 1959-1961 China Great Leap Forward Famine, Seonghoon Kim, Belton Fleisher, Jessica Ya Sun

Research Collection School Of Economics

We report evidence of long-term adverse health impacts of fetal malnutrition exposure of middle-aged survivors of the 1959-1961 China Famine using data from the China Health and Retirement Longitudinal Study. We find that fetal exposure to malnutrition has large and long-lasting impacts on both physical health and cognitive abilities, including the risks of suffering a stroke, physical disabilities in speech, walking and vision, and measures of mental acuity even half a century after the tragic event. Our findings imply that policies and programs that improve the nutritional status of pregnant women yield benefits on the health of a fetus that …

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Do Security Analysts Learn From Their Colleagues?, Kenny Phua, T. Mandy Tham, Chi Shen Wei Oct 2017

Do Security Analysts Learn From Their Colleagues?, Kenny Phua, T. Mandy Tham, Chi Shen Wei

Research Collection Lee Kong Chian School Of Business

We examine how learning from colleagues affects security analyst forecast outcomes. We represent the brokerage house as an information network of analysts connected through industry overlaps in their coverage portfolios. Analysts who are more centrally connected in their brokerage network produce more accurate forecast estimates and generate more influential forecast revisions. Consistent with learning, more central analysts tend to unwind their colleagues’ recent forecast errors in their forecast revisions. Learning appears to benefit all colleagues, as working at more interconnected brokerages (i.e., denser networks) improves forecast accuracy for all analysts.

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A Resilient Society For A Global Singapore, Arnoud Cyriel Leo De Meyer Oct 2017

A Resilient Society For A Global Singapore, Arnoud Cyriel Leo De Meyer

Research Collection Lee Kong Chian School Of Business

I was intrigued by the theme of this conference about the social futures of Singapore. I believe that Singapore is at a tipping point of thinking about its future. This is not because it was Singapore’s 50 years of independence last year and we are now looking at the next 50 years. It is simply because Singapore has become a very mature and rich society. It probably has to start thinking in a very different way about its future. I had, at other occasions, mentioned my belief that Singapore’s resilience will be one of the key requirements for it to …

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Transshipment Hub Selection From A Shipper’S And Freight Forwarder’S Perspective, Gang Chen, Waiman Cheung, Sung-Chi Chu, Liang Xu Oct 2017

Transshipment Hub Selection From A Shipper’S And Freight Forwarder’S Perspective, Gang Chen, Waiman Cheung, Sung-Chi Chu, Liang Xu

Research Collection Lee Kong Chian School Of Business

Transshipment hub selection becomes increasingly important to the global logistics community. From the perspectives of shippers and freight forwarders, a selection must align with cost control strategy and sustain service reliability across cooperative service providers. This paper assesses the selection with the options of both sea and air transports, and from the influence of country of origin of the company. Critical factors of transshipment hub selection, both qualitative and quantitative, are identified through focus group discussions. Relative importance of these factors is determined based on collective views of logistics stakeholders. The competitiveness of transshipment hubs is then assessed using an …

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Energy Storage For Pv-Driven Air-Conditioning For An Off-Grid Resort - A Case Study, Christoph Luerssen, Arifeen Wahed, Thomas Reindl, Clayton Miller, David Cheong, Chandra Sekhar Oct 2017

Energy Storage For Pv-Driven Air-Conditioning For An Off-Grid Resort - A Case Study, Christoph Luerssen, Arifeen Wahed, Thomas Reindl, Clayton Miller, David Cheong, Chandra Sekhar

Research Collection College of Integrative Studies

The current paper presents a case study of a PV-driven air-conditioning system with battery and latent heat storage applied for an off-grid resort in Bintan (Indonesia). The lead-acid battery bank has a nominal energy storage capacity of 47 kWh and the ice storage can store up to 92 kWh latent heat. The entire energy system of the resort was equipped with a comprehensive real-time data acquisition system to measure different parameters such as solar irradiation, temperatures, flow rates and power consumptions. More than 100 parameters are transferred minutely and monitored remotely across country borders. A TRNSYS model has also been …

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Strong Consistency Of Spectral Clustering For Stochastic Block Models, Liangjun Su, Wuyi Wang, Yichong Zhang Oct 2017

Strong Consistency Of Spectral Clustering For Stochastic Block Models, Liangjun Su, Wuyi Wang, Yichong Zhang

Research Collection School Of Economics

In this paper we prove the strong consistency of several methods based on thespectral clustering techniques that are widely used to study the communitydetection problem in stochastic block models (SBMs). We show that under someweak conditions on the minimal degree, the number of communities, and theeigenvalues of the probability block matrix, the K-means algorithm applied tothe Eigenvectors of the graph Laplacian associated with its first few largesteigenvalues can classify all individuals into the true community uniformlycorrectly almost surely. Extensions to both regularized spectral clustering anddegree-corrected SBMs are also considered. We illustrate the performance ofdifferent methods on simulated networks.

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Specification Test For Spatial Autoregressive Models, Liangjun Su, Xi Qu Oct 2017

Specification Test For Spatial Autoregressive Models, Liangjun Su, Xi Qu

Research Collection School Of Economics

This article considers a simple test for the correct specification of linear spatial autoregressive models, assuming that the choice of the weight matrix Wn is true. We derive the limiting distributions of the test under the null hypothesis of correct specification and a sequence of local alternatives. We show that the test is free of nuisance parameters asymptotically under the null and prove the consistency of our test. To improve the finite sample performance of our test, we also propose a residual-based wild bootstrap and justify its asymptotic validity. We conduct a small set of Monte Carlo simulations to investigate …

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The Business Of Business…Is Creating Shared Value, Singapore Management University Sep 2017

The Business Of Business…Is Creating Shared Value, Singapore Management University

Perspectives@SMU

Corporations, governments and NGOs need to work together for mankind to exist sustainably, says the former Prime Minister of the Netherlands

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China’S Growth Story: Plenty To Come, Singapore Management University Sep 2017

China’S Growth Story: Plenty To Come, Singapore Management University

Perspectives@SMU

The Middle Kingdom has lots of room to grow if it could sort out economic distortions and optimise capital allocation. The tweaking of the one-child policy might also help

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How Do Continuing Professional Development Programmes Contribute To Workplace Literacy? Successful Frameworks At Singapore Management University (Smu) Libraries, Rajendra Munoo Sep 2017

How Do Continuing Professional Development Programmes Contribute To Workplace Literacy? Successful Frameworks At Singapore Management University (Smu) Libraries, Rajendra Munoo

Research Collection Library

No abstract provided.

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Evaluating The Empirical Performance Of Dsge Models: What Is The Role Of Search And Matching Frictions In The Labor And Capital Markets?, Weng Sam Mok Sep 2017

Evaluating The Empirical Performance Of Dsge Models: What Is The Role Of Search And Matching Frictions In The Labor And Capital Markets?, Weng Sam Mok

Dissertations and Theses Collection

A major perspective in explaining involuntary unemployment is to recognize the existence of job market frictions, in particular, job market matching frictions. The workhorse model employed is the Diamond- Mortensen-Pissarides (DMP) model. Similar to the labor market, the market for physical capital markets exhibits the same characteristics with a pool of unsold inventory as well as used capital that is sold and reallocated to other terms. Nevertheless, past research has highlighted several issues of the DMP model in matching the characteristics of the labor market. In a model enriched with labor participation flows and job separation, I evaluate the model …

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Customer Satisfaction Index Of Singapore 2017: Q2 Results, Institute Of Service Excellence, Smu Sep 2017

Customer Satisfaction Index Of Singapore 2017: Q2 Results, Institute Of Service Excellence, Smu

Research Collection Institute of Service Excellence (2007-2024)

The Customer Satisfaction Index of Singapore (CSISG) computes customer satisfaction scores at the national, sector, sub-sector, and company levels. The CSISG serves as a quantitative benchmark of the quality of goods and services produced by the Singapore economy over time and across countries. This is the CSISG’s eleventh year of measurement.

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A Guide To The Singapore Presidency, Smu Apolitical, Wenqi Ng Sep 2017

A Guide To The Singapore Presidency, Smu Apolitical, Wenqi Ng

Student Publications

Singapore adopted the Westminster Parliamentary system of government from the United Kingdom. Under this system, the head of state and head of government are distinct roles that are held by different people. The head of state of Singapore is the President, and in the United Kingdom it is the monarch who holds that responsibility. The head of government in both countries is the Prime Minister. Before 1991, the President was “elected” (essentially appointed) by Parliament. The role of the President was entirely ceremonial. Singapore’s first President, Yusof Ishak, who was also the last Yang di-Pertuan Negara, interacted with various communities …

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Multidimensional Analysis Of The News Consumption Of Different Demographic Groups On A Nationwide Scale, Jisun. An, Haewoon Kwak Sep 2017

Multidimensional Analysis Of The News Consumption Of Different Demographic Groups On A Nationwide Scale, Jisun. An, Haewoon Kwak

Research Collection School Of Computing and Information Systems

Examining 103,133 news articles that are the most popular for different demographic groups in Daum News (the second most popular news portal in South Korea) during the whole year of 2015, we provided multi-level analyses of gender and age differences in news consumption. We measured such differences in four different levels: (1) by actual news items, (2) by section, (3) by topic, and (4) by subtopic. We characterized the news items at the four levels by using the computational techniques, which are topic modeling and the vector representation of words and news items. We found that differences in news reading …

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An Unsupervised Multilingual Approach For Online Social Media Topic Identification, Siaw Ling Lo, Raymond Chiong, David Cornforth Sep 2017

An Unsupervised Multilingual Approach For Online Social Media Topic Identification, Siaw Ling Lo, Raymond Chiong, David Cornforth

Research Collection School Of Computing and Information Systems

Social media data can be valuable in many ways. However, the vast amount of content shared and the linguistic variants of languages used on social media are making it very challenging for high-value topics to be identified. In this paper, we present an unsupervised multilingual approach for identifying highly relevant terms and topics from the mass of social media data. This approach combines term ranking, localised language analysis, unsupervised topic clustering and multilingual sentiment analysis to extract prominent topics through analysis of Twitter’s tweets from a period of time. It is observed that each of the ranking methods tested has …

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Unobtrusive Monitoring To Detect Depression For Elderly With Chronic Illnesses, Jung-Yoon Kim, Na Liu, Hwee Xian Tan, Chao-Hsien Chu Sep 2017

Unobtrusive Monitoring To Detect Depression For Elderly With Chronic Illnesses, Jung-Yoon Kim, Na Liu, Hwee Xian Tan, Chao-Hsien Chu

Research Collection School Of Computing and Information Systems

Mental health related disorders are common diseases, especially among the elder. Among the various mental health diseases, one potential threat to ageing-in-place is the risk of depression. In this paper, we propose a simple unobtrusive sensing system using passive infra-red motion sensors to monitor the activities of daily living of elderly, who are living alone. A feature extraction module comprising of three layers-states, events, and activities, and the corresponding algorithms are proposed to extract features. Four popular classification models-neural network, C4.5 decision tree, Bayesian network, and support vector machine are then applied to detect the severity of depression. We implement …

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Inferring Spread Of Readers’ Emotion Affected By Online News, Agus Sulistya, Ferdian Thung, David Lo Sep 2017

Inferring Spread Of Readers’ Emotion Affected By Online News, Agus Sulistya, Ferdian Thung, David Lo

Research Collection School Of Computing and Information Systems

Depending on the reader, A news article may be viewed from many different perspectives, thus triggering different (and possibly contradicting) emotions. In this paper, we formulate a problem of predicting readers’ emotion distribution affected by a news article. Our approach analyzes affective annotations provided by readers of news articles taken from a non-English online news site. We create a new corpus from the annotated articles, and build a domain-specific emotion lexicon and word embedding features. We finally construct a multi-target regression model from a set of features extracted from online news articles. Our experiments show that by combining lexicon and …

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Instrument Constituencies And Public Policy-Making: An Introduction, Daniel Beland, Michael Howlett, Ishani Mukherjee Sep 2017

Instrument Constituencies And Public Policy-Making: An Introduction, Daniel Beland, Michael Howlett, Ishani Mukherjee

Research Collection School of Social Sciences

For many years, policy-making has been envisioned as a process in which subsets of policy actors engage in specific types of interactions involved in the definition of policy problems, the articulation of solutions and their matching or enactment. This activity involves the definition of policy goals (both broad and specific), the creation or identification of the means and mechanisms that need to be implemented to realize these goals, and the set of bureaucratic, partisan, electoral and other political struggles involved in their acceptance and transformation into action. While past research on policy subsystems has often assumed or implied that these …

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Stability And Change In Parenting And Adjustment Profiles Across Early, Middle, And Late Adolescence In Chinese American Families, Su Yeong Kim, Shanting Chen, Lester Sim, Yang Hou Sep 2017

Stability And Change In Parenting And Adjustment Profiles Across Early, Middle, And Late Adolescence In Chinese American Families, Su Yeong Kim, Shanting Chen, Lester Sim, Yang Hou

Research Collection School of Social Sciences

Chinese American parents have a reputation for being “tiger” parents, and Chinese American adolescents are widely viewed as “model” minorities. However, these stereotypes fail to capture the within-group variation among Chinese Americans. This chapter aims to present findings on Chinese Americans’ parenting profiles and adolescent adjustment profiles. Four parenting profiles were identified. Supportive (high levels of positive and low levels of negative parenting) was the most prevalent parenting profile, followed by tiger (high levels of both positive and negative parenting), easygoing (low on both positive and negative parenting), and harsh (low levels of positive and high levels of negative parenting). …

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Sexual Conflict In Mating Strategies, Norman P. Li, Jin Chuan Yong Sep 2017

Sexual Conflict In Mating Strategies, Norman P. Li, Jin Chuan Yong

Research Collection School of Social Sciences

Why do men and women come into conflict over mating and sex? This chapter examines the adaptive reasons, which trace back to key differences in minimum obligatory parental investment (Trivers 1972). Reflecting these differences, men tend to be relatively eager for casual sex, whereas women are relatively more cautious, requiring their sexual partners to be of higher quality or committed for a longer duration. As each side strives for its own reproductive interests, the other side’s strategy is often interfered with, resulting in conflict.

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Instrument Constituencies And Public Policy-Making: An Introduction, Daniel Beland, Michael Howlett, Ishani Mukherjee Sep 2017

Instrument Constituencies And Public Policy-Making: An Introduction, Daniel Beland, Michael Howlett, Ishani Mukherjee

Research Collection School of Social Sciences

For many years, policy-making has been envisioned as a process in which subsets of policy actors engage in specific types of interactions involved in the definition of policy problems, the articulation of solutions and their matching or enactment. This activity involves the definition of policy goals (both broad and specific), the creation or identification of the means and mechanisms that need to be implemented to realize these goals, and the set of bureaucratic, partisan, electoral and other political struggles involved in their acceptance and transformation into action. While past research on policy subsystems has often assumed or implied that these …

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Quality Immigration Will Remain Singapore’S Lifeblood, Tan K. B. Eugene Sep 2017

Quality Immigration Will Remain Singapore’S Lifeblood, Tan K. B. Eugene

Research Collection Yong Pung How School Of Law

Seemingly innocuous individual decisions and life events, such as marriage, starting a family and migrating, have significant public-policy implications. This is reflected in the changing demographics of a country, which can affect the agility with which the country responds to the constantly evolving external environment.

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Tackling The Health Gap: The Role Of Psychosocial Processes, Nancy E. Adler, Jacinth J. X. Tan Sep 2017

Tackling The Health Gap: The Role Of Psychosocial Processes, Nancy E. Adler, Jacinth J. X. Tan

Research Collection School of Social Sciences

In The Health Gap, Michael Marmot describes how, starting even before birth, social conditions set individuals on trajectories that eventuate in inequities in health and longevity. In addition to race and ethnicity, socioeconomic status linked to income and education plays a major role in determining health trajectories. The effects emerge not only at the very bottom of the socioeconomic spectrum, but across the whole range.1 The fact that health effects persist at levels where resources are more than adequate to fulfill material needs suggests that the health gap is not due only to material privation associated with poverty, but also …

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Unsupervised Load Shape Clustering For Urban Building Performance Assessment, Jimeno A. Fonseca, Clayton Miller, Arno Schlueter Sep 2017

Unsupervised Load Shape Clustering For Urban Building Performance Assessment, Jimeno A. Fonseca, Clayton Miller, Arno Schlueter

Research Collection College of Integrative Studies

This paper presents a method to automatically cluster typical days of energy consumption in one or several buildings. The method is based on an optimized version of the Symbolic Aggregate approXimation (SAX) method. SAX is a data mining technique for clustering time series with recent applications in building fault detection and building performance assessment. The number of clusters and accuracy of SAX highly depends on two highly sensitive input variables, i.e., the word size and the alphabet size. We propose the use of the genetic algorithm NSGA-II to optimize the number of words and alphabet size of SAX subjected to …

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Gender And Connections Among Wall Street Analysts, Lily Hua Fang, Sterling Huang Sep 2017

Gender And Connections Among Wall Street Analysts, Lily Hua Fang, Sterling Huang

Research Collection School Of Accountancy

We examine how alumni ties with corporate boards differentially affect male and female analysts’ job performance and career outcomes. Connection improves men’s job performance — forecasting accuracy and recommendation impact — significantly more than women’s. Controlling for performance, connection further contributes to men’s, but not women’s, likelihood of being voted by institutional investors as “star” analysts, a marker of career success. These asymmetric effects are stronger in more opaque firms and among younger analysts, but is absent from a placebo test. Our evidence indicates that men reap higher benefits from social networks than women in both job performance and subjective …

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The Four Horsemen Of Negotiator Power, Michael Schaerer, Adam D. Galinsky, Joe Magee Sep 2017

The Four Horsemen Of Negotiator Power, Michael Schaerer, Adam D. Galinsky, Joe Magee

Research Collection Lee Kong Chian School Of Business

Scholarly research generally finds that democratic governments are more likely to respect human rights than other types of regimes. Different human rights practices among long-standing and affluent democracies therefore present a puzzle. Drawing from democratic theory and comparative institutional studies, we argue more inclusive or "popular" democracies should enforce human rights better than more exclusive or "elite" democracies, even in the face of security threats from armed conflict. Instead of relying on the Freedom House or Polity indexes to distinguish levels of democracy, we adopt a more focused approach to measuring structures of inclusion, the Institutional Democracy Index (IDI), which …

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Personal Data Protection Act 2012: Understanding The Consent Obligation, Man Yip Sep 2017

Personal Data Protection Act 2012: Understanding The Consent Obligation, Man Yip

Research Collection Yong Pung How School Of Law

The Personal Data Protection Act 20121 (“PDPA”) provides the baseline standards of protection of personal data and works in tandem with existing law to provide comprehensive protection. The birth of the legislation clearly signals Singapore’s commitment to protect the collection, use and disclosure of personal data in the age of big data and its awareness of the importance of such protection in strengthening Singapore’s position as a leading commercial hub. Significantly, the PDPA protection model balances “both the rights of individuals to protect their personal data” against “the needs of organisations to collect, use or disclose personal data for legitimate …

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Polygenic Hazard Scores In Preclinical Alzheimer's Disease, Chin Hong Tan, Bradley T. Hyman, Jacinth J. X. Tan, Christopher P. Hess, William P. Dillon, Gerard D. Schellenberg, Lilah M. Besser, Walter A. Kukull, Karolina Kauppi, Linda K. Mcevoy, Ole A. Andreassen, Anders M. Dale, Chun Chieh Fan, Rahul S. Desikan Sep 2017

Polygenic Hazard Scores In Preclinical Alzheimer's Disease, Chin Hong Tan, Bradley T. Hyman, Jacinth J. X. Tan, Christopher P. Hess, William P. Dillon, Gerard D. Schellenberg, Lilah M. Besser, Walter A. Kukull, Karolina Kauppi, Linda K. Mcevoy, Ole A. Andreassen, Anders M. Dale, Chun Chieh Fan, Rahul S. Desikan

Research Collection School of Social Sciences

Identifying asymptomatic older individuals at elevated risk for developing Alzheimer's disease (AD) is of clinical importance. Among 1,081 asymptomatic older adults, a recently validated polygenic hazard score (PHS) significantly predicted time to AD dementia and steeper longitudinal cognitive decline, even after controlling for APOE e4 carrier status. Older individuals in the highest PHS percentiles showed the highest AD incidence rates. PHS predicted longitudinal clinical decline among older individuals with moderate to high CERAD (amyloid) and Braak (tau) scores at autopsy, even among APOE e4 non-carriers. Beyond APOE, PHS may help identify asymptomatic individuals at highest risk for developing Alzheimer's neurodegeneration.

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Sources Of Health Financing And Health Outcomes: A Panel Data Analysis, Tomoki Fujii Sep 2017

Sources Of Health Financing And Health Outcomes: A Panel Data Analysis, Tomoki Fujii

Research Collection School Of Economics

We study the differential impacts of public and private sources of health spending on health outcomes using a triple difference approach. We find that private health spending has on average a higher health-promoting effect than public health spending. This result is robust with respect to the choice of outcome measure and covariates in the regression and driven primarily by the countries with ineffective governments. Once we restrict our sample to countries with effective governments, private health spending is no better than public health spending for improving the health outcome.

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