Digital Commons Network^™

Trade And Divergence In Education Systems, Pao Li Chang, Fali Huang

Research Collection School Of Economics

This paper presents a theory on the endogenous choice of a country's education policy and the two-way causal relationship between trade and education systems. The setting of a country's education system determines its talent distribution and comparative advantage in trade; the possibility of trade by raising the returns to the sector of comparative advantage in turn induces countries to further diferentiate their education systems and reinforces the initial pattern of comparative advantage. Specifically, the Nash equilibrium choice of education systems by two countries interacting strategically are necessarily more divergent than their autarky choices, although the difference is still less than …

The Wto Trade Effect, Pao Li Chang, Myoung-Jae Lee

Research Collection School Of Economics

This paper reexamines the GATT/WTO membership effect on bilateral trade flows, using nonparametric methods including pair-matching, permutation tests, and a Rosenbaum (2002) sensitivity analysis. Together, these methods provide an estimation framework that is robust to misspecification biases, allows general forms of heterogeneous treatment effects, and addresses potential hidden selection biases. This is in contrast to most conventional parametric studies on this issue. Our results suggest large GATT/WTO trade-promoting effects, robust to various restricted matching criteria, alternative indicators for GATT/WTO involvement, different matching methodologies, non-random incidence of positive trade flows, and inclusion of multilateral resistance terms.

Testing Structural Change In Partially Linear Models, Liangjun Su, Halbert White

Research Collection School Of Economics

We consider two tests of structural change for partially linear time-series models. The first tests for structural change in the parametric component, based on the cumulative sums of gradients from a single semiparametric regression. The second tests for structural change in the parametric and nonparametric components simultaneously, based on the cumulative sums of weighted residuals from the same semiparametric regression. We derive the limiting distributions of both tests under the null hypothesis of no structural change and for sequences of local alternatives. We show that the tests are generally not asymptotically pivotal under the null but may be free of …

Micro-Level Estimation Of Child Undernutrition Indicators In Cambodia, Tomoki Fujii

Research Collection School Of Economics

One major limitation to addressing child undernutrition is a lack of the information required to target resources. This article extends the small-area estimation technique of Elbers, Lanjouw, and Lanjouw (2002, 2003) to jointly estimate multiple equations while allowing for individual-specific random errors across equations (in addition to cluster- and household-specific random errors). Estimates of the prevalence of stunting and underweight for children under age 5 in Cambodia from 17 Demographic and Health Survey strata are disaggregated into 1,594 communes by combining the Demographic and Health Survey data. The estimates are consistent with the surveyonly estimates at the aggregate and primary …

Chosen-Ciphertext Secure Bidirectional Proxy Re-Encryption Schemes Without Pairings, Jian Weng, Huijie, Robert Deng, Shengli Liu, Kefei Chen

Research Collection School Of Computing and Information Systems

Proxy re-encryption realizes delegation of decryption rights, enabling a proxy holding a re-encryption key to convert a ciphertext originally intended for Alice into an encryption of the same message for Bob. Proxy re-encryption is a very useful primitive, having many applications in distributed file systems, outsourced filtering of encrypted spam, access control over network storage, and so on. Lately, Weng et al. proposed the first unidirectional proxy re-encryption scheme without using bilinear pairs. However, Weng et al.'s construction does not possess collusion resilience, in the sense that a coalition of the proxy and the delegatee can recover the delegator's private …

Regulatory Focus, Regulatory Fit, And The Search And Consideration Of Choice Alternatives, Michel Tuan Pham, Hannah H. Chang

Research Collection Lee Kong Chian School Of Business

This research investigates the effects of regulatory focus on alternative search and consideration set formation in consumer decision making. Results from three experiments yield two primary findings. First, promotion-focused consumers tend to search for alternatives at a more global level, whereas prevention-focused consumers tend to search for alternatives at a more local level. Second, promotionfocused consumers tend to have larger consideration sets than do preventionfocused consumers. Building on these two primary findings, it is additionally shown that whereas promotion-focused consumers attach relatively greater value to options chosen from hierarchically structured sets, prevention-focused consumers attach relatively greater value to options chosen …

The Effects Of Action, Normality, And Decision Carefulness On Anticipated Regret: Evidence For A Broad Mediating Role Of Decision Justifiability., Jochen Reb, Terry Connolly

Research Collection Lee Kong Chian School Of Business

Two distinct theoretical views explain the effects of action/inaction and social normality on anticipated regret. Norm theory (Kahneman & Miller, 1986) emphasises the role of decision mutability, the ease with which one can imagine having made a different choice. Decision justification theory (Connolly & Zeelenberg, 2002) highlights the role of decision justifiability, the perception that the choice was made on a defensible basis, supported by convincing arguments or using a thoughtful, comprehensive decision process. The present paper tests several contrasting predictions from the two theoretical approaches in a series of four studies. Study 1 replicated earlier findings showing greater anticipated …

Two Contrasting Approaches In The Interpretation Of Outdated Statutory Provisions, Yihan Goh

Research Collection Yong Pung How School Of Law

Some statutes in operation today were passed a long time ago. Inevitably, through the passage of time, social norms at the time of enactment may now be unrecognizable. Two recent cases show contrasting approaches towards the interpretation of outdated statutory provisions. The first approach is seen in the Singapore High Court case of WX v.WW. That case concerned the interpretation of section 114 of the Evidence Act, a decidedly ancient statutory provision. The second approach was adopted by the Singapore Court of Appeal in AAG v. Estate of AAH, deceased. In that case, the Court of Appeal had to interpret …

Reading Your Counterpart: The Benefit Of Emotion Recognition Accuracy For Effectiveness In Negotiation, Hillary Anger Elferbein, Maw Der Foo, Judith White, Hwee Hoon Tan, Voon Chuan Aik

Research Collection Lee Kong Chian School Of Business

Using meta-analysis, we find a consistent positive correlation between emotion recognition accuracy (ERA) and goal-oriented performance. However, this existing research relies primarily on subjective perceptions of performance. The current study tested the impact of ERA on objective performance in a mixed-motive buyer-seller negotiation exercise. Greater recognition of posed facial expressions predicted better objective outcomes for participants from Singapore playing the role of seller, both in terms of creating value and claiming a greater share for themselves. The present study is distinct from past research on the effects of individual differences on negotiation outcomes in that it uses a performance-based test …

Keys To Better Capitalism And Human Welfare: Entrepreneurship, Knowledge@Smu

Knowledge@SMU

The word “entrepreneurship”, despite its universal prevalence today, was a relatively new term that entered common lexicon only a few decades ago. Yet, there is no denying the role that entrepreneurs play in creating wealth, not merely for themselves, but also opportunities and welfare for large swathes of the populace, benefitting the overall economy. At a recent talk, Carl J. Schramm, president and CEO of the Kaufmann Foundation, reinforces the case for entrepreneurship and debunks some common views on who “entrepreneurs” are.

Managing Social Media: An Exercise In Managing Organisations, Knowledge@Smu

Knowledge@SMU

Managing corporate reputation used to be an exercise in managing information flow and building relationships with the media power brokers. But in the world of social media, where just about anybody has the power and ability to produce and publish instantaneously, the very idea of controlling information and public sentiment may seem more like an exercise in futility. Unlike traditional media, there are no professional codes of conduct ruling over online comments, tweets or blog posts. Anything goes! The task is made even trickier with the need to manage senior business leaders who, brought up in a different era, may …

Codes Of Conduct - Managing The Contradictions Between Local And Corporate Norms, Gregor Halff

Research Collection Lee Kong Chian School Of Business

No abstract provided.

Stock Return Synchronicity And Technical Trading Rules, Koon Boon Kee

Research Collection School Of Accountancy

No abstract provided.

Do Abnormally High Audit Fees Impair Audit Quality?, Jong-Hag Choi, Jeong-Bon Kim, Yoonseok Zang

Research Collection School Of Accountancy

This study examines whether and how audit quality proxied by the magnitude of absolute discretionary accruals is associated with abnormal audit fees, that is, the difference between actual audit fee and the expected, normal level of audit fee. The results of various regressions reveal that the association between the two is asymmetric, depending on the sign of the abnormal audit fee. For observations with negative abnormal audit fees, there is no significant association between audit quality and abnormal audit fee. In contrast, abnormal audit fees are negatively associated with audit quality for observations with positive abnormal audit fees. Our findings …

Efficient Mining Of Multiple Partial Near-Duplicate Alignments By Temporal Network, Hung-Khoon Tan, Chong-Wah Ngo, Tat-Seng Chua

Research Collection School Of Computing and Information Systems

This paper considers the mining and localization of near-duplicate segments at arbitrary positions of partial near-duplicate videos in a corpus. Temporal network is proposed to model the visual-temporal consistency between video sequence by embedding temporal constraints as directed edges in the network. Partial alignment is then achieved through network flow programming. To handle multiple alignments, we consider two properties of network structure: conciseness and divisibility, to ensure that the mining is efficient and effective. Frame-level matching is further integrated in the temporal network for alignment verification. This results in an iterative alignment-verification procedure to fine tune the localization of near-duplicate …

Vireo At Trecvid 2010: Semantic Indexing, Known-Item Search, And Content-Based Copy Detection, Chong-Wah Ngo, Shi-Ai Zhu, Hung-Khoon Tan, Wan-Lei Zhao

Research Collection School Of Computing and Information Systems

This paper presents our approaches and the comparative analysis of our results for the three TRECVID 2010 tasks that we participated in: semantic indexing, known-item search and content-based copy detection.

Model Checking Hierarchical Probabilistic Systems, Jun Sun, Songzheng Song, Yang Liu

Research Collection School Of Computing and Information Systems

Probabilistic modeling is important for random distributed algorithms, bio-systems or decision processes. Probabilistic model checking is a systematic way of analyzing finite-state probabilistic models. Existing probabilistic model checkers have been designed for simple systems without hierarchy. In this paper, we extend the PAT toolkit to support probabilistic model checking of hierarchical complex systems. We propose to use PCSP#, a combination of Hoare’s CSP with data and probability, to model such systems. In addition to temporal logic, we allow complex safety properties to be specified by non-probabilistic PCSP# model. Validity of the properties (with probability) is established by refinement checking. Furthermore, …

An Analytic Characterization Of Model Minimization In Factored Markov Decision Processes, Guo W., Tze-Yun Leong

Research Collection School Of Computing and Information Systems

Model minimization in Factored Markov Decision Processes (FMDPs) is concerned with finding the most compact partition of the state space such that all states in the same block are action-equivalent. This is an important problem because it can potentially transform a large FMDP into an equivalent but much smaller one, whose solution can be readily used to solve the original model. Previous model minimization algorithms are iterative in nature, making opaque the relationship between the input model and the output partition. We demonstrate that given a set of well-defined concepts and operations on partitions, we can express the model minimization …

The Cultural Dynamics Of Rewarding Honesty And Punishing Deception, Cynthia S. Wang, Angela K. Y. Leung

Research Collection School of Social Sciences

Recent research suggests that individuals reward honesty more than they punish deception. Five experiments showed that different patterns of rewards and punishments emerge for North American and East Asian cultures. Experiment 1 demonstrated that Americans rewarded more than they punished, whereas East Asians rewarded and punished in equivalent amounts. Experiments 2 and 3 revealed that these divergent patterns by culture could be explained by greater social mobility experienced by Americans. Experiments 4 and 5 examined how certain consequences of social mobility, approach—avoidance behavioral motivations and trust and felt obligation, can lead to disparate reward and punishment decisions within the two …

Smu-Sis At Tac 2010 - Kbp Track Entity Linking, Swapna Gottipati, Jing Jiang

Research Collection School Of Computing and Information Systems

Entity linking task is a process of linking the named entity within the unstructured text to the entity in the Knowledge Base. Entity liking to the relevant knowledge is useful in various information extraction and natural language processing applications that improve the user experiences such as search, summarization and so on. We propose the two way entity linking approach to reformulate query, disambiguate the entity and link to the relevant KB repository. This paper describes the details of our participation in TAC 2010 - Knowledge Base Population track. We provided an innovative approach to disambiguate the entity by query reformulation …

Admission Systems To Dental School In Europe: A Closer Look At Flanders, Tine Buyse, Filip Lievens, L. Martens

Research Collection Lee Kong Chian School Of Business

Dental education in Europe faces enormous challenges. One deals with the admission to dental school. Although admission procedures vary considerably across Europe, a characteristic of some systems is that the same procedure is used across students who will ultimately pursue different majors (medical or dental). This is based on the assumptions that there is no significant difference in these students' scores and that the requirements for medicine and dentistry are equal. This study examines these assumptions in the admission exam 'Medical and Dental Studies' in Flanders. Students who pass may choose whether they start medical or dental education. Over an …

Model Checking A Model Checker: A Code Contract Combined Approach, Jun Sun, Yang Liu, Bin Cheng

Research Collection School Of Computing and Information Systems

Model checkers, like any complex software, are subject to bugs. Unlike ordinary software, model checkers are often used to verify safety critical systems. Their correctness is thus vital. Verifying model checkers is extremely challenging because they are always complicated in logic and highly optimized. In this work, we propose a code contract combined approach for checking model checkers and apply it to a home-grown model checker PAT. In this approach, we firstly embed programming contracts (i.e., pre/post-conditions and invariants) into its source code, which can capture correctness of model checking algorithms, underlying data structures, consistency between different model checking parameters, …

Conformism And Turnout, Massimiliano Landi, Mauro Sodini

Research Collection School Of Economics

This paper proposes a model of turnout in which citizens have a preference for conformism, which adds to the instrumental preference for the electoral outcome. Under this environment multiple equilibria arise, some that generate a (more realistic) high level of turnout, for a wide rage of parameter values. It is also shown that high levels of turnout are robust to the introduction of asymmetry and heterogeneity in the parameter governing the preference for conformism and with respect to the reference group for conformism.

This model suggests that high turnout can only be achieved as the outcome of a particular coordination …

Unpacking Sources Of Comparative Advantage: A Quantitative Approach, Davin Chor

Research Collection School Of Economics

This paper develops an approach for quantifying the importance of different sources of comparative advantage, by extending the Eaton and Kortum (2002) model to predict industry trade flows. In this framework, comparative advantage is determined by the interaction of country and industry characteristics, with countries specializing in industries whose production needs they can best meet with their factor endowments and institutional strengths. I estimate the model parameters using: (i) OLS; and (ii) a simulated method of moments procedure that accounts for the prevalence of zeros in the bilateral trade data. I apply the model to explore various quantitative questions, such …

Redemption And Resistance: Lessons In Non-Violent Action From Early Aotearoa/New Zealand, Ian Macduff

Research Collection Yong Pung How School Of Law

This article provides a brief account of the non-violent resistance of two Maori chiefs, Te Whiti and Tohu, in 19th century New Zealand. Each example of such non-violent or passive resistance is unique to its historical and cultural context; but at the same time there is a tangible common ground between this example and those found elsewhere, such as Martin Luther King and Gandhi. This article will also draw a link between the politics of acts of resistance – in this case, resistance to the forceful acquisition of Maori land – and faith-based justifications. In conclusion, it will be suggested …

E C Investment Holding Pte Ltd V Ridout Residence Pte Ltd And Another (Orion Oil Limited And Another, Interveners), Yihan Goh

Research Collection Yong Pung How School Of Law

The High Court decision of E C Investment Holding Pte Ltd v Ridout Residence Pte Ltd and another (Orion Oil Limited and another, Interveners) [2010] SGHC 270 (“E C Investment”) raises several contractual issues, chief amongst which – and the focus of this note – concern duress. This note discusses three points of the judgment relating to duress: (a) the reaffirmation of economic duress as a vitiating factor; (b) the status of lawful threats; and (c) the burden of proof in economic duress cases.

Making A Cantonese-Christian Family: Quotidian Habits Of Language And Background In A Transnational Hongkonger Church, Justin K. H. Tse

Research Collection School of Social Sciences

Studies of the Hong Kong‐Vancouver transnational migration network seldom pay close attention to religion in the everyday lives of Hongkonger migrants. Based on 9 months of ethnographic fieldwork at St. Matthew's Church, a Hong Kong church in Metro Vancouver, this paper examines the tacit assumptions and taken‐for‐granted quotidian practices through which a Hongkonger church is made. I argue that St. Matthew's Church has been constructed as a Hong Kong Cantonese‐Christian family space through the everyday use of language and invocations of a common educational background. This argument extends the literature on Hongkonger migration to Metro Vancouver by grounding it in …

Social Media: More Work For Teachers And Students?, Knowledge@Smu

Knowledge@SMU

There used to be a time where social media was simply for recreational socialising; to share noteworthy encounters, odd photos, hilarious videos and interesting links. That understanding of social media has somewhat evolved over time. For students, social media now includes graded forum postings and discussions, wiki-assignments, blog-based homework, lecture podcasts and so on. While many students and teachers are happy to work via these new mediums, some have complained that work on social media requires a lot more effort. Others have also opined that social media should, essentially, be for leisure and not work.

Asymptotic Distributions Of The Least Squares Estimator For Diffusion Processes, Qiankun Zhou, Jun Yu

Research Collection School Of Economics

The asymptotic distributions of the least squares estimator of the mean reversion parameter (κ) are developed in a general class of diffusion models under three sampling schemes, namely, ongspan, in-fill and the combination of long-span and in-fill. The models have an affine structure in the drift function, but allow for nonlinearity in the diffusion function. The limiting distributions are quite different under the alternative sampling schemes. In particular, the in-fill limiting distribution is non-standard and depends on the initial condition and the time span whereas the other two are Gaussian. Moreover, while the other two distributions are discontinuous at κ …

Tradeoffs And Depletion In Choice, Jing Wang, Nathan Novemsky, Ravi Dhar, Roy Baumeister

Research Collection Lee Kong Chian School Of Business

Four experiments examine why choices deplete executive resources. The authors show that the resolution of trade-offs is a driver of depletion effects arising from choice, and the larger the trade-offs, the greater is the depletion effect. The authors also find that choice difficulty not related to trade-offs does not influence the depleting effect of the choices. Finally, the authors find that though people can intuit some depletion effects, they do not intuit that choices or trade-offs within choices might be depleting and therefore fail to predict that larger trade-offs are more depleting.