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.     

Environmental Tobacco Smoke: Exposure-Response Relationships in Epidemiologic Studies

Demonstration of a dose-response relationship for environmental tobacco smoke (ETS) is an important indication of causality. Central to the analysis and interpretation of dose-response relations as described in epidemiological studies is the relationship between dose and exposure. It must be recognized that in studies of ETS we have only surrogate measures of dose, and these surrogate measures (based on exposure) are imperfect. The question-based measures of ETS exposure generally have not been standardized, may have limited validity and reliability, and cannot comprehensively describe total ETS exposure, exposure to individual ETS components, nor doses of biologically relevant agents at target sites. Nevertheless, useful data have been yielded in epidemiologic studies linking ETS exposure to increased respiratory infection and symptoms, reduced lung growth in children, and increased lung cancer in nonsmoking adults. The more consistent exposure-response data for studies on acute health in children may reflect the greater difficulty in measuring exposure in studies of chronic health in adults.     

企业营销道德水准测试的指标体系及评价方法研究

本文是“企业营销道德水准测试及评价系统”课题的前期研究成果。作者首先通过探测性调研确定了影响营销道德水准评价的企业营销行为,并在定量调研基础上将其归并为七个评价营销道德水准的维度,同样还根据定量调研的结果确定了企业营销道德水准的测评方法,为营销道德水准测试与评价系统的建立构筑了重要基础。     

Evaluating the impact of utility company billing plans on residential energy consumption

Many utility companies offer their customers the choice of participation in an average payment plan, which enables them to pay a fixed sum for their utility bill each month (with final settlement at the end of the billing year), instead of the conventional “pay as you go” billing procedure. Because customers on average payment plans are protected from paying large bills during peak energy-use seasons and because the information about monthly energy use and its cost is perhaps less salient to them, it was hypothesized that customers on the average payment plan would use more electricity than customers not on the plan. Using a nonequivalent control group design, the electricity consumption of a selection of customers of two utility companies (Ns = 475 and 74) was examined. The results showed that there was no evidence to support the hypothesis. Since the logic of hypothesis testing does not permit the ready acceptance of the null hypothesis, several procedural, methodological, and statistical points were made to buttress the conclusion that the average payment plans had no effect on electricity consumption.     

Professional Relationship Boundaries: A Social Work Teaching Module

Social workers are often challenged by the complex and ever‐changing dynamics within their relationships with clients, and struggle to find ethical responses within professional boundary grey zones where boundaries with clients can be difficult to identify, yet easy to cross. Social work educators attempt to prepare students for these complex situations, yet in the United States research reveals rates of social work boundary violations that lead one to question the efficacy of social work ethics education. This article describes the educational competencies and instructional strategies that comprise an adaptable course module which was developed in response to this challenge, and intended to increase students' self‐awareness, motivation and professional judgment‐making abilities related to their professional boundaries. The educational competencies for this course include the abilities to: identify boundary violations, apply critical thinking skills to complex professional relationship contexts, increase awareness of self and other, and initiate prevention strategies. In contrast to traditional approaches to education, this article describes instructional strategies that are based on adult‐learning principles, which have the purpose of effectively and creatively teaching topic areas in such a way as to produce behavioural change. These course topic areas include a ‘Professional Relationship Boundaries Continuum’ conceptual framework, boundary violation impacts, personal boundary vulnerabilities, blurring boundary indicators, and risk‐minimizing strategies.     

环境信息不对称、机构投资者实地调研与企业环境治理

基于信息不对称理论,本文以2013-2016年深交所重污染行业上市公司为研究样本,分析了机构投资者实地调研对企业环境治理的影响及其作用机制。研究发现,机构投资者实地调研对企业环境治理具有积极的推动作用;在环境信息披露较差以及本地子公司较多的企业中,机构投资者实地调研的环境治理作用更为明显。进一步考察实地调研对企业环境治理的影响路径发现,机构投资者实地调研推动了企业环境治理的资本市场监督和媒体监督。本文的研究验证了信息不对称理论在环境治理中的作用,拓宽了实地调研经济后果的研究领域,对于深入理解并推动我国企业环境治理具有重要的现实意义。     

Returns to scale vs. damages to scale in data envelopment analysis: An impact of U.S. clean air act on coal-fired power plants

This study proposes a use of Data Envelopment Analysis (DEA) to measure Returns to Scale (RTS) of US coal-fired power plants. The power plants produce not only desirable outputs (e.g., electricity) but also undesirable outputs (e.g., CO₂ and NO_x) as a result of their plant operations. Therefore, the proposed use of DEA also measures a new concept, or “DTS: Damages to Scale” (corresponding to RTS for undesirable outputs). Both scale measures discussed in this study are a quick-and-easy approach for assessing RTS and DTS, but not an exact method, because it does not consider a direct linkage between the two measures. This study applies the proposed approach to examine the legal validity of U.S. Clean Air Act (CAA). We find that the CAA has been legally effective and influential on the operation of coal-fired power plants in the United States because their plant operations belong to increasing RTS on a desirable output and increasing DTS on three undesirable outputs. The increasing DTS indicates a need for managerial improvement and/or engineering innovation such as advanced clean coal technology. This empirical result implies that U.S. federal and state governments need to expand the legal scope of CAA to the emission control of CO₂ because the current CAA excludes the regulation on CO₂ emission that is now considered as a main source of the global warming and climate change.     

Responsive Public Officials and Engaged Citizens: Myth or Reality? A Case Study of Water Rights Policy in Colorado

In the past decade nearly 20 Colorado communities have constructed kayak courses to provide recreational amenities and attract tourists. These projects were followed in some cases by applications for a new form of recreational water rights, which differs dramatically from traditional forms of water rights in Colorado. This paper investigates the role that citizens played in the legal and legislative battles that resulted in this policy change. Findings indicate that citizens demanded the construction of kayak courses across Colorado, to which local officials responded. Citizens generally were indifferent to water rights applications once kayak facilities were constructed, however. Government officials sought the water rights to protect their economic investment and their newfound tourist revenue.

企业动态能力及其功效:环境不确定性的影响

当前关于动态能力的维度及其功效还存在较大分歧,有些学者甚至认为动态能力毫无价值,应该摒弃动态能力研究.本文从战略过程视角,依据相关文献与访谈调查,将动态能力分解为组织意会能力、柔性决策能力及动态执行能力,探讨了动态能力与持续优势的关系及环境不确定性在其中的影响作用.通过对中国地区217家企业的实证研究发现,动态能力确实对持续优势有显著的正向影响,环境不确定性是动态能力的驱动因素而非调节变量,环境动态性对企业持续优势有显著的正向影响,敌对性则对持续优势有显著的负向影响.本研究的结论澄清了动态能力的价值前提,探明了环境不确定性的影响机理,对理论研究与实践操作都有一定的启发意义.