Developing a typology of the 'duty to work', as experienced by lay persons with musculoskeletal disorders

Musculoskeletal diagnoses account for the majority of cases of reduced work capacity. This article investigates lay persons' strategies in relation to work and musculoskeletal disorders. Twenty interviews were conducted and analysed using grounded theory. A typology of self-presentations was developed. The interviewees' self-presentations revealed a strong sense of a 'duty to work'. This sense of duty took four different forms, leading us to categorise persons expressing particular forms as workaholics, work manics, workhorses or relaxed workers. Relaxed workers seem to have the best prognosis for recovery as they had a confident self-agency and worked to fulfil their own needs rather than those of others. This was in contrast to work manics, with an uncertain self-agency and driven to work by others' needs. In conclusion, awareness of such linguistic forms as self-attributions and idiomatic phrases provides an opportunity to identify and talk about individual's self-agency and driving forces in the recovery process.     

离子晶体外表面束缚极化子

本文计及表面光学声子的作用以及像电荷的作用,采用变分方法对一些材料外表面束缚极化子的基态能量和自陷能作了数值计算,并对结果进行了讨论,发现:对于Ⅰ—Ⅶ、Ⅱ—Ⅵ,Ⅲ—Ⅴ化合物的外表面,均可形成稳定的束缚极化子,且由于表面光学声子的作用,使这一杂质态更加稳定。     

The Role of Cancer Risk in the Regulation of Industrial Pollution

The extent of carcinogen regulation under existing U.S. environmental statutes is assessed by developing measures of the scope and stringency of regulation. While concern about cancer risk has played an important political role in obtaining support for pollution control programs, it has not provided the predominant rationale for most regulatory actions taken to date. Less than 20% of all standards established to limit concentrations of chemicals in various media address carcinogens. Restrictions on chemical use are more frequently based on concerns about noncancer human health or ecological effects. Of the chemicals in commercial use which have been identified as potential human carcinogens on the basis of rodent bioassays, only a small proportion are regulated. There is an inverse relationship between the scope of regulatory coverage and the stringency of regulatory requirements: the largest percentages of identified carcinogens are affected by the least stringent requirements, such as information disclosure. Standards based on de minimis cancer risk levels have been established for only 10% of identified carcinogens and are restricted to one medium: water. Complete bans on use have affected very few chemicals. The general role that carcinogenicity now plays in the regulatory process is not dramatically different from that of other adverse human health effects: if a substance is identified as a hazard, it may eventually be subject to economically achievable and technically feasible restrictions.     

The Boston Area Diary Study and the Moral Citizenship of Care

This paper describes the theoretical foundations, empirical findings, and practical and philosophical implications of the Boston Area Diary Study (BADS), a study of the caring behavior of 44 participants over one calendar year. In particular, the paper presents an identification theory of care and discusses how it shaped the conceptualization, collection, and analysis of the data in a year-long diary study of daily voluntary assistance. The findings from the BADS (1) theoretically confirm the identification theory of care; (2) methodologically capture how individuals perceive and carry out caring behavior as a unity; and (3rpar; empirically document the existence of a moral citizenship in America that is substantially more vigorous than is implied by the usual indicators of civic and political citizenship.     

Theoretical consideration of effect of fishing mortality on growth and reproduction of fish populations

Summary An increase in fish mortality due to fishing can theoretically change the growth and reproduction of fish populations from the viewpoint of adaptation. We address the issue of how an iteroparous fish should convert surplus energy into somatic growth and reproduction at each age under given conditions of mortality. A model of life history, which maximizes the net reproductive rate using the discrete maximum principle, is improved employing a new relationship between body weight and surplus energy which we have recently proposed. The model is applied to the North Sea plaicePleuronectes platessa, for which it has been reported that the average length of young fish had increased whereas that of old ones had decreased for some decades. Although the model cannot directly explain the former phenomenon, the two phenomena can be interpreted as a change in the optimal life history due mainly to an increase in mortality.     

Sampling Strategies for Toxic Air Contaminants

Annual concentrations of toxic air contaminants are of primary concern from the perspective of chronic human exposure assessment and risk analysis. Despite recent advances in air quality monitoring technology, resource and technical constraints often impose limitations on the availability of a sufficient number of ambient concentration measurements for performing environmental risk analysis. Therefore, sample size limitations, representativeness of data, and uncertainties in the estimated annual mean concentration must be examined before performing quantitative risk analysis. In this paper, we discuss several factors that need to be considered in designing field-sampling programs for toxic air contaminants and in verifying compliance with environmental regulations. Specifically, we examine the behavior of SO2, TSP, and CO data as surrogates for toxic air contaminants and as examples of point source, area source, and line source-dominated pollutants, respectively, from the standpoint of sampling design. We demonstrate the use of bootstrap resampling method and normal theory in estimating the annual mean concentration and its 95% confidence bounds from limited sampling data, and illustrate the application of operating characteristic (OC) curves to determine optimum sample size and other sampling strategies. We also outline a statistical procedure, based on a one-sided t-test, that utilizes the sampled concentration data for evaluating whether a sampling site is compliance with relevant ambient guideline concentrations for toxic air contaminants.     

我国货币政策失效的原因分析及对策

1997年以来,我国的货币政策在经济增长中起到了一定的作用,但也存在一些失效,主要表现在利率机制、准备金政策、公开市场业务等方面存在缺陷。因此,必须不断完善我国的货币政策,以便更好地为经济增长提供政策指导。     

领导愿景与企业绩效关系研究

领导者的前瞻性愿景对组织发展具有重要作用。本文用访谈和问卷调查的方法对国有和民营企业的领导愿景与企业经营业绩之间的关系进行了探讨。结果发现,领导愿景及愿景共享等因素对企业绩效具有直接影响作用。研究者在此基础上提出了建立共同愿景以及培养和选拔企业愿景式领导的对策和建议。     

The Contribution of NPOs to Family Policy Formulation in EU Member and Applicant States

This paper examines the role of nonprofit organizations (NPOs) in the process of family policy formulation in eight member states and three applicant states of the European Union. Drawing upon interviews with representatives from the nonprofit sector, the author argues that the experiences of NPOs in family policy-making vary considerably between countries because of the way state–nonprofit relations operate. Social origins theory illustrates why these variations exist by pointing to broad societal influences on the nonprofit sector, but new empirical evidence presented here suggests that, in a particular policy field, other factors, such as the significance of the field on policy agendas, the strength of one particular organization in a specific cultural context, party ideology, and financial viability of the NPO, shape the role of organizations in the formulation of policies