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131.
This article provides evidence to the debateabout whether or not investments designated forcompliance with environmental performance andtechnology standards favor or harm the workproductivity of companies. A panel data modelis analyzed, which panel refers to 53 largeSpanish companies quoted on the stock exchangeand that have participated in a subsidizedenvironmental protection program during the1990–1995 period, specifically in theIndustrial and Technological Program for theEnvironment (PITMA). A Cobb-Douglas productionfunction is used to relate the workproductivity to a measure of the pollutionabatement investment dedicated to compliancewith standards. The resulting negativecoefficient, although close to zero, should notbe interpreted as a result derived from justany kind of regulation, but rather a result ofthe kind of regulation analyzed in this work,meaning the command and control regulation thatoften binds companies to make environmentalinvestments that are not productive in theconventional economic sense, although they areproductive in terms of environmental quality.In addition, and in order to specify the kindof company to which the conclusions of thispaper are applicable, the characteristics ofthe companies that participated in PITMA areanalyzed comparatively with companies that didnot participate.  相似文献   
132.
This study estimates how prices change following the entry and exit of grocery retailers. We estimate the effects of entry (exit) by comparing affected markets to a set of unaffected markets using both a difference‐in‐difference estimator and a synthetic control estimator. We find that entry typically results in reduced prices. More surprisingly, we find that exit is frequently associated with falling prices. Our estimated effects of entry on grocery prices are similar in magnitude to estimates of merger price effects in the supermarket industry. This finding suggests that entry event studies may be a useful tool for horizontal merger analysis. (JEL L11, L4, L81)  相似文献   
133.
Nurses are taught a variety of interventions to relieve patient suffering. They are often more comfortable with patient suffering that is physical in nature rather than psychological, existential, and spiritual. Remaining present for patients and families whose suffering cannot be easily relieved is particularly challenging. This article describes how an expert nurse responded to unrelieved suffering and offers insight into ways of being present for patients and families.  相似文献   
134.
用于研究细胞入侵的基质降解实验   总被引:1,自引:0,他引:1  
在细胞正常发育、发炎和肿瘤转移研究中有一个关键步骤,就是通过多层的细胞外基质入侵细胞。在传统的研究方法中,研究者们已经发展了自己的检测方法,就是利用荧光标记的凝胶来研究基质降解,其中伴随着细胞的入侵。这篇文章探索了研究细胞入侵的新方法,能得到比传统方法更一致的结果。研究者们利用这些方法来研究降解时间过程,扫描在降解过程中潜在的活化剂或者抑制剂,探索细胞入侵的通道。  相似文献   
135.
New Labour, Work and the Family   总被引:1,自引:0,他引:1  
New Labour has put support for the family at the core of its notion of the “strong community”. Across a range of policy areas the Labour government can be seen to be developing a direct and explicit family policy. But what kind of community is the government trying to shape by these policies? On the one hand, Labour appears to support the family as the basis of a more moral, dutiful and cohesive community. On the other hand, the government has given weight to policies that support social inclusion in the community through paid work. This paper examines whether there is a tension in Labour’s social policies between its emphasis on the importance of stable family life and the primacy given to paid work. Are critics like Ruth Levitas right when they argue that the government’s emphasis on paid work devalues, and is unsupportive of, unpaid work, especially caring for children and other family members? Alternatively, can this combination of communitarianisms—community as “stable family” and community as “paid work”—be seen to be marking out some “third way” on the family? We shall show that different aspects of the government’s family policies reflect different perspectives and policy agendas within New Labour and third‐way thinking more broadly. And while recognizing the tensions between work and the family, we shall suggest that they are often overstated and fail to give sufficient weight to the complementary aspects of Labour’s welfare reforms.  相似文献   
136.
137.
In this paper, we give the closure of the class of increasing likelihood ratio (ILR) life distributions under the formation of certain coherent systems with independent and identically distributed components, and particularly in k-out-of-n systems. Some possible definitions of its dual class (DLR) are discussed and results about the closure are given. Furthermore, we include examples which show that these two aging classes are not closed under formation of special coherent systems. This work has been supported by Ministerio de Ciencia y Tecnologia, Grants PB96-1105 and BFM2000-0362.  相似文献   
138.
Therapists today are seeing an increasing number of victims of rape. The article deals with the on-going psychotherapy of raped women; the impact the presenting problem has on both client and therapist; and some ways forms of imagery. The meaning of the myth is explored within the context of the author's experience with these women.  相似文献   
139.
This paper is written in response to calls from feminist scholars to address potential biases against women in theories of family therapy. Findings from studies offemale development are summarized and integrated into an expanded model of Bowen's family systems theory. A case example comparing the expanded model with a traditional application of Bowen's theory is included.  相似文献   
140.
We study claims problems in which a certain amount of indivisible units (of an homogeneous good) has to be distributed among a group of agents, when this amount is not enough to fully satisfy agents’ demands. Our aim is to find solutions fulfilling procedural and fairness properties. To do that, we define the M-down methods, which are the unique robust (composition down and consistency) and fair (balancedness and conditional full compensation) rules. Besides, we also establish the relationship between these M-down methods and the constrained equal awards rule.  相似文献   
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