Sick building syndrome and perceived indoor environmental quality: A survey of apartment buildings in Hong Kong

The outbreak of a highly communicable disease, SARS, in Asia in 2003 has revealed the health risk of living in a high-density environment. To show the important connection between human health and environmental quality, this study surveys the prevalence of sick building syndrome (SBS) among apartment residents and their evaluation of indoor environmental quality (IEQ). Based on a sample of 748 households living in Hong Kong, two interesting findings are revealed: (1) nasal discomfort was the commonest home-related SBS symptom despite the absence of any central ventilation system in apartment buildings; (2) noise, rather than ventilation, was the major IEQ problem perceived by residents. Our statistical analysis further showed that residents with SBS symptoms were less satisfied with their IEQ than those without. That is, despite a positive evaluation of specific IEQ criteria with respect to the building residents lived in, if they reported feeling SBS related symptoms, the overall IEQ evaluation of their building could still be negative. This perception bias gives rise to a sample selection problem in measuring perceived IEQ, which has implications on housing management practices and the formulation of a healthy housing policy.     

Linking Elderly to Holistic Care Services through Integrated Communication Technology: The Personal Emergency Link Service Rendered by the Senior Citizen Home Safety Association in Hong Kong

Through a Personal Emergency Link system, the Senior Citizen Home Safety Association has rendered 24-hour care to more than 111,000 service users in Hong Kong who are mostly vulnerable seniors and chronic invalids living alone or living with their elderly spouses/caregivers only. This article will describe how the Personal Emergency Link system is used to link seniors living in the community. Measures taken to prevent failure of the system will be described. With the use of different technology applications, many human touches and warm caregiving are rendered to the elderly and needy.     

On the Demography of South Asian Famines Part II

Part I of this paper (published in the last issue) was focused on demographic responses to three major famines which occurred in late nineteenth-century India. Part II deals with the 1943–44 famine in Bengal and the 1974–75 famine in Bangladesh. The paper presents important and hitherto unanalysed demographic data on the Bengal famine. Drawing on the analysis of Part I, it argues that because of flaws in the data which have been used, there is a need to reconsider some of the judgements which have been made about the demographic consequences of both the 1943–44 and 1974–75 famines. It is contended that some serious misconceptions have arisen concerning short-term demographic responses to famine. Finally, possible implications for famines in other parts of the world are discussed.     

平行法则：早期上古汉语中“者”的出现

文章为覆盖前期上古汉语Pre—archaic Chinese（公元前14世纪至公元前11世纪）与早期上古汉语Early—archaic Chinese（公元前11世纪至公元前6世纪）的历时性研究，目的在于更好地揭示早期上古时代所出现的“者”之功用。研究表明，“者”的功能与前期上古所出现的“之”的功能间存在着“平行对应”关系，我们将此关系定义为“平行法”机制，此机制从属于“类比”。存在于“之”与“者”之间的“平行法”机制可能促使了“者”的功能的涌现。     

Family Control and Stock Market Reactions to Innovation Announcements

Although family firms are common around the world, studies on family‐controlled business are limited. Prior studies mainly focused on the influences of family ownership on overall firm performance, and the results were mixed. In this study we attempted to explore the impacts of family ownership on innovation by examining the association of family control and stock market reactions to innovation announcements. We found that firms with greater family control experienced significantly more negative stock market reactions to innovation announcements. The results further indicated that divergence of cash flow and voting rights was strongly and negatively correlated with announcement‐period abnormal returns. In addition, the findings suggested a significantly positive moderating effect of institutional ownership. The conclusions were robust under various measures of family control, and remained valid after controlling other influential factors for stock market reactions to innovation announcements.     

Exponential tilt models for two-group comparison with censored data

We study application of the Exponential Tilt Model (ETM) to compare survival distributions in two groups. The ETM assumes a parametric form for the density ratio of the two distributions. It accommodates a broad array of parametric models such as the log-normal and gamma models and can be sufficiently flexible to allow for crossing hazard and crossing survival functions. We develop a nonparametric likelihood approach to estimate ETM parameters in the presence of censoring and establish related asymptotic results. We compare the ETM to the Proportional Hazards Model (PHM) in simulation studies. When the proportional hazards assumption is not satisfied but the ETM assumption is, the ETM has better power for testing the hypothesis of no difference between the two groups. And, importantly, when the ETM relation is not satisfied but the PHM assumption is, the ETM can still have power reasonably close to that of the PHM. Application of the ETM is illustrated by a gastrointestinal tumor study.     

k-POD: A Method for k-Means Clustering of Missing Data

The k-means algorithm is often used in clustering applications but its usage requires a complete data matrix. Missing data, however, are common in many applications. Mainstream approaches to clustering missing data reduce the missing data problem to a complete data formulation through either deletion or imputation but these solutions may incur significant costs. Our k-POD method presents a simple extension of k-means clustering for missing data that works even when the missingness mechanism is unknown, when external information is unavailable, and when there is significant missingness in the data.

[Received November 2014. Revised August 2015.]     

宪政运行的成本结构

分析宪政运行的成本结构，对于宪法实施、宪政评价和宪政社会的构建都有重要的时代意义。宪政运行成本就是宪政运行过程中所产生和付出的代价和费用，具有交易费用的性质。宪政运行的成本结构包括立宪成本、行宪成本、守宪成本和违完成本等。