隔代照顾的生物社会学动因及影响分析

当前社会环境下,儿童照顾给工作和家庭平衡带来压力和挑战。隔代照顾成为缓解这一压力的流行方式而得到了广泛的关注,学术界产生了许多研究成果。其中,生物社会学视角在国外隔代照顾研究中有较多的应用。但是在国内采用这一视角进行的实证研究非常少。本研究以中国健康与养老追踪调查(CHARLS)2015年的数据为资料,通过生物社会学的视角并使用广义Logistic模型和广义线性模型对四类儿女双全的祖辈的隔代照顾的积极性进行分析。结果表明亲缘选择假设不能完全解释四类祖辈照顾孙辈的积极性的差异。虽然从整体上看女性祖辈比男性祖辈更积极地照顾孙辈,但是父系女性祖辈照顾孙辈的积极性并没有像亲缘选择假设所推断的那样显著低于母系女性祖辈。同时,分城乡的回归结果表明城镇地区四类祖辈的积极性没有显著差异,而在乡村地区父系女性祖辈的照顾强度显著高于其他三类祖辈。因此,亲缘选择理论可以解释照顾者性别差异的部分原因,而无法阐明父系和母系的宗族差异。此外,照顾者的工作状态、婚姻状态、受教育水平、子女的经济支持、子女的数量和子女的年龄都是影响隔代照顾积极性的显著因素。需要注意的是虽然生物社会学理论有其独特的价值,但是将它用于社会研究也有明显的局限性。因此,这一理论仍然有许多亟待探索和完善的空间。     

Performance as a Basis for Price-setting in the Capital Goods Industry:: Concepts and Empirical Evidence

This paper discusses a new pricing strategy, which leads to a certain variability of prices as the supplier offers to fix prices to performance parameters of long-lasting industrial goods. The underlying idea is to give a signal of the supplier’s competence and/or to conclude a contract, which contains additional value for both parties to the market. Some theoretical findings are applied to this concept and lead to 13 hypotheses, especially dealing with the perceptions of the buyer. Empirical research covered 131 German mechanical engineering companies. The data were used to evaluate the use of performance-based pricing and test the hypotheses. The results show a mixed picture. Uncertainty-reducing effects are well perceived while other assumptions could not be confirmed. Based on the results recommendations are developed on how and when to apply performance-based pricing.     

Uncertainty in Measurements of Dermal Absorption of Pesticides

Dermal absorption experiments form an important component in the assessment of risk from exposure to pesticides and other substances. Much dermal absorption data is gathered in rat experiments carried out using a certain standard protocol. Uncertainties in these data arise from many sources and can be quite large. For example, measurements of the systemic absorption of hexaconazole differed by more than an order of magnitude within a single experiment. Two diniconazole studies produced quite different results, due to minor differences in protocol and in chemical formulation. Limits of detection can also prevent accurate measurement when the amounts absorbed are small. These examples illustrate the need for measuring and reporting uncertainties in estimates that are based on these data. The most direct way to estimate uncertainty is to compute the sample standard deviations of replicate measurements. By pooling these estimates across dose and duration groups for which they are similar, the number of degrees of freedom is increased, and more precise confidence intervals can be obtained. In particular, the ratio of upper to lower 95% confidence limits was reduced by as much as ten-fold for hexaconazole, seven-fold for uniconazole, and nearly four-fold for propiconazole.     

INFORMATION, CAPITALISM AND UNCERTAINTY

This article argues that the changes characterized by many commentators as announcing the 'information age' are better seen, not as heralding a new type of society, but as the continuation, consolidation and extension of capitalism - something which is accompanied by constant upheaval and innovation. The shift from conceiving the 'information society' as a result of technological breakthroughs to one which lays emphasis on the primacy of 'information' itself is observed. The importance especially of informational labour's 'flexibility' is regarded, not as indicative of a new age but of the requirements of globalized capitalism which engenders change the better to consolidate its practices. The instability of life today is ascribed, not to the upheavals resulting from the 'information revolution', but rather to the insatiable dynamic that has long been a distinguishing feature of capitalist enterprise. These processes are examined in terms of the shift from public to private provision of information and in the heightened uncertainty of existence today.     

Uncertainty with Partial Information on the Possibility of the Events

The Choquet expected utility model deals with nonadditive probabilities (or capacities). Their dependence on the information the decision-maker has about the possibility of the events is taken into account. Two kinds of information are examined: interval information (for instance, the percentage of white balls in an urn is between 60% and 100%) and comparative information (for instance, the information that there are more white balls than black ones). Some implications are shown with regard to the core of the capacity and to two additive measures which can be derived from capacities: the Shapley value and the nucleolus. Interval information bounds prove to be satisfied by all probabilities in the core, but they are not necessarily satisfied by the nucleolus (when the core is empty) and the Shapley value. We must introduce the constrained nucleolus in order for these bounds to be satisfied, while the Shapley value does not seem to be adjustable. On the contrary, comparative information inequalities prove to be not necessarily satisfied by all probabilities in the core and we must introduce the constrained core in order for these inequalities be satisfied. However, both the nucleolus and the Shapley value satisfy the comparative information inequalities, and the Shapley value does it more strictly than the nucleolus. This revised version was published online in June 2006 with corrections to the Cover Date.     

Ellsberg Revisited: An Experimental Study

An extension to Ellsberg's experiment demonstrates that attitudes to ambiguity and compound objective lotteries are tightly associated. The sample is decomposed into three main groups: subjective expected utility subjects, who reduce compound objective lotteries and are ambiguity neutral, and two groups that exhibit different forms of association between preferences over compound lotteries and ambiguity, corresponding to alternative theoretical models that account for ambiguity averse or seeking behavior.     

The Severity of Supply Chain Disruptions: Design Characteristics and Mitigation Capabilities

Supply chain disruptions and the associated operational and financial risks represent the most pressing concern facing firms that compete in today's global marketplace. Extant research has not only confirmed the costly nature of supply chain disruptions but has also contributed relevant insights on such related issues as supply chain risks, vulnerability, resilience, and continuity. In this conceptual note, we focus on a relatively unexplored issue, asking and answering the question of how and why one supply chain disruption would be more severe than another. In doing so, we argue, de facto, that supply chain disruptions are unavoidable and, as a consequence, that all supply chains are inherently risky. Employing a multiple‐method, multiple‐source empirical research design, we derive novel insights, presented as six propositions that relate the severity of supply chain disruptions (i) to the three supply chain design characteristics of density, complexity, and node criticality and (ii) to the two supply chain mitigation capabilities of recovery and warning. These findings not only augment existing knowledge related to supply chain risk, vulnerability, resilience, and business continuity planning but also call into question the wisdom of pursuing such practices as supply base reduction, global sourcing, and sourcing from supply clusters.     

Crisis communication within a community: Bonding,coping, and making sense together

Crisis communication has been researched extensively from managerial and functionalist approaches, and little empirical research exists exploring the role of a community in helping community members cope with crises. Situated in this major gap, the current investigation adopts a community-centered approach that combines insights from chaos theory, uncertainty reduction theory, and sensemaking theory. This study used a mixed method design to examine the role of a campus community in dealing with a variety of campus crises. The qualitative study gave an in-depth understanding of how a crisis is perceived and the underlying process of how a community helps to make sense of a crisis. The quantitative study tested and further illustrated this process through path analysis. The major contributions of this study to the current crisis communication literature are twofold: (1) a crisis-induced community building model that demonstrates a community’s role in helping community members self-organize, collectively make sense of a crisis, and reproduce community experiences; and (2) instruments to measure a crisis and community functionalities. Theoretical implications of this study on chaos theory, uncertainty reduction theory, and sensemaking theory are discussed.     

My network,my self: A social network approach to work-based identity

As the organizational landscape becomes increasingly turbulent and the gig economy grows, the conventional anchors for a work-based sense of identity – a relatively stable organization, workgroup, and occupation – are losing relevance. We argue that a “network identity,” defined as the core, distinctive, and more or less enduring character of a set of social ties (e.g., “we are high-achievers”), helps fill this growing void because individuals’ networks often reflect agency and have more or less fluid boundaries and portability. These attributes enable individuals to develop or join networks that may transcend specific contexts and adapt to change. An individual’s network identity simultaneously implicates all three levels of self – individual, relational, and collective – such that it is a potentially very powerful means for realizing his or her identity motives. Crossing the dimensions of network boundary strength and network density, we offer a 2 × 2 typology of networks and discuss their implications for members’ network identities and what kinds of individuals might prefer each network.     

复杂性伦理学

在下述有关莫兰论复杂性伦理学的三则译文中,第一则概述了复杂性伦理学包含的各种要素;第二则陈述了复杂性思想和伦理学之间的必然联系;在第三则中指出,未来的伦理学与政治的结合将应同时促进个人、社会和人类的发展。