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171.
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Schumpeterian growth theory stresses the role of structural change in long run growth. Countries which increase the share of technology-intensive sectors in their economic structures benefit more from technological learning and innovation. In addition, they are more able to respond to changes in the international markets and to compete in sectors whose demand grows at higher rates. The paper compares Brazil (and to a lesser extent the CIBS group of countries) from the point of view of the direction and intensity of structural change. It is suggested that structural change has been relatively weak in Brazil and that this has been associated with a less dynamic growth performance since the 1980s.  相似文献   
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Injuries produced by animals are capable of leaving severe patterns and in some cases may result in the death of the attacked individual. Law enforcement authorities may come to erroneous conclusions about the source of the bites based on their awareness of animals present and similarities of the injuries to the untrained eye, with dreadful consequences. Expertise of a carnivore biologist and an odontologist that indentifies the particularities of bite marks may be useful for identifying the attacking species. We present the investigation of a fatal dog pack attack involving a 43‐year‐old man in Bell Ville (Argentina) where the evidence provided by a forensic dentist and a biologist was categorical for establishing the animal species involved. Because of the unusual characteristics of the wounds and the initial hypothesis made by local authorities of a cougar attack, habits and specific patterns of both dog pack and cougar predation on humans are discussed.  相似文献   
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The premise of discourse theory in environmental policy is that realities are shaped by language. One discourse that is gaining popularity is the concept of environmental security, a discourse that presupposes environmental threats as urgent. The attempt to cast environmental issues as security issues has resulted in the common use of security jargon, idioms, and metaphors in policymakers’ and politicians’ statements. Various analyses attempt to identify why natural resources are discussed in terms and language of security. However, far fewer studies have attempted to identify differences in the manner in which different types of resources are incorporated into such a discourse by different actors and what variables contribute to this process. This study examines the construction of the security references, security arguments, and language in the statements of the Commission on Sustainable Development dealing with energy and water. We found that international organizations and Non-governmental Organizations were somewhat more likely than state actors to use security references to discuss sustainability issues. The issues securitized are not the traditional high political ones such as regime stability and conflicts, but rather issues more associated with human security, such as access to renewable energy, affordable food, and clean water. The fact that in many statements examined the use of security references was not associated with any existential threat and hence did not comply with the conditions of the Copenhagen School raises some doubts as to whether security language in these statements implies a true securitization move. We also examined whether the use of the term “security” by states was correlated with greater resource scarcity or vulnerability. In the case of water-related sessions, the evidence was mixed, depending on the choice of dependent variable. The results from energy security regressions, however, were inconsistent with the hypothesis that greater scarcity or vulnerability induces more use of security language.  相似文献   
180.

Objectives

Using data from a randomized experiment, to examine whether moving youth out of areas of concentrated poverty, where a disproportionate amount of crime occurs, prevents involvement in crime.

Methods

We draw on new administrative data from the U.S. Department of Housing and Urban Development’s Moving to Opportunity (MTO) experiment. MTO families were randomized into an experimental group offered a housing voucher that could only be used to move to a low-poverty neighborhood, a Section 8 housing group offered a standard housing voucher, and a control group. This paper focuses on MTO youth ages 15–25 in 2001 (n = 4,643) and analyzes intention to treat effects on neighborhood characteristics and criminal behavior (number of violent- and property-crime arrests) through 10 years after randomization.

Results

We find the offer of a housing voucher generates large improvements in neighborhood conditions that attenuate over time and initially generates substantial reductions in violent-crime arrests and sizable increases in property-crime arrests for experimental group males. The crime effects attenuate over time along with differences in neighborhood conditions.

Conclusions

Our findings suggest that criminal behavior is more strongly related to current neighborhood conditions (situational neighborhood effects) than to past neighborhood conditions (developmental neighborhood effects). The MTO design makes it difficult to determine which specific neighborhood characteristics are most important for criminal behavior. Our administrative data analyses could be affected by differences across areas in the likelihood that a crime results in an arrest.  相似文献   
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