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91.
An environmental life cycle optimization model for the European pulp and paper industry 总被引:1,自引:0,他引:1
Will paper recycling reduce the environmental impact of the European pulp and paper sector? If so, is maximal paper recycling the best policy to optimize the life cycle of the pulp and paper sector? We explore these questions using an approach that combines materials accounting methods and optimization techniques. Environmental impact data are inputs for a linear programming network flow model to find optimal configurations for the sector. These configurations consist of a mix of different pulping technologies, a geographical distribution of pulp and paper production, and a level of recycling consistent with the lowest environmental impacts. We use the model to analyse scenarios with different recycling strategies. Recycling offers a reduction in environmental impact in regions with a high population and a large production of paper and board products. Regions with a large production of graphic products should focus on cleaner virgin pulp production with energy recovery. We conclude that relocation of paper production also offers a reduction in environmental impact. However, the severe effects on the economy make this policy less attractive than a combination of recycling, cleaner pulp production and energy recovery. 相似文献
92.
This article extends the debate begun in the June 1992 issue of EMJ when the authors first criticized Michael Porter's explanatory framework in his Competitive Advantage of Nations (1990), over the role of national culture on the competitive advantage of nations. In this paper, Frans van den Bosch and Arno van Prooijen stress that Europe is a locus of competitive advantage if one is prepared to pay attention to the possibility of ‘European Management’ as a potential asset of European firms. In this connection, the transnationalization of European firms is of importance. 相似文献
93.
A defining difference between rural and urban circumstances for people with disabilities involves opportunities for work. One of the most significant elements of the rural context is that economic conditions in rural communities consistently trail the national economy. This paper presents an overview of disability in rural America and outlines an ecological model for guiding the development of rural solutions to rehabilitation problems. Two promising examples of such solutions, self-employment as a rural vocational rehabilitation employment option and rural economic leadership by people with disabilities, are outlined. 相似文献
94.
This research reexamines the meaning of occupational prestige scores from the social psychological perspective of identity theory. Using comparable data for Canada and the United States, it analyzes the degree to which the education and income levels of occupations influence occupational prestige judgements by evoking affective associations (feelings about the goodness, powerfulness, and liveliness of occupational identities), as well as the extent to which these social sentiments are independent determinants of prestige. There has been a longstanding controversy about the normative content of occupational prestige scores. We find that moral worthiness (as measured by the Evaluation dimension of the semantic differential) is a determinant of the prestige of occupations with low and middle but not high levels of education and income. We also find that the impact of education on prestige scores is direct and cognitive, while a considerable proportion of the total effect of income is processed through feelings about the potency of occupations. The results for the two countries are very similar. One exception is that moral worthiness is a more important determinant of prestige in the United States than in Canada. We connect this finding to the literature comparing value differences between the two countries. 相似文献
95.
This article summarizes the results of a socioeconomic model of basic needs that was applied to four countries—Brazil, Colombia, India, and Kenya. A modeling approach was thought necessary in order to make more precise the concept of basic needs. Although the work has not been entirely successful in doing that, from the policy experiment attempted, and given the limitations of the models used, we believe that an approach centered on the provision of basic needs will help the poorest satisfy their needs more quickly than is possible under alternative approaches. 相似文献
96.
97.
Van Dorn RA 《Violence and victims》2004,19(3):303-320
This study investigates the extent to which student reports of violent and nonviolent victimization in public high schools is associated the presence of hate-related words or symbols, the availability of hard and soft drugs, and the presence of gangs. Data from the 1999 School Crime Supplement of the National Crime Victimization Survey were used for this analysis. In the final multinomial logistic regression model, the presence of hate-related words, the availability of hard drugs, and a gang presence were significantly associated with reports of violent victimization. The availability of soft drugs was significantly associated with nonviolent victimization. Findings held across gender, race/ethnicity, and urbanicity of the school's location with younger students more likely to be both violently and nonviolently victimized than older students. Implications for primary and secondary interventions aimed at school climate and the reduction of correlates of victimization are discussed. 相似文献
98.
Active physician participation and acceptance of Six Sigma is critical to successful implementation. Take a look at strategies and techniques that can help secure physician support for Six Sigma. 相似文献
99.
Van Impe K 《International migration (Geneva, Switzerland)》2000,38(3):113-191
The article addresses the question of how to develop appropriate measures to tackle trafficking in women, based on the findings of a study of trafficking between the Philippines and Belgium. It argues that there is no easy or uni-dimensional solution to human trafficking, since it is influenced by a complex set of factors, often working in combination with one another. It concludes that control measures alone cannot stop the flow of trafficking in women and that a legal approach which relies solely on one type of legislation would be too narrow. An effective strategy must combine and balance punitive measures with protection of human rights, stricter border control and the removal of the root causes of irregular movements. Measures must be agreed and coordinated between origin, transit and receiving countries. 相似文献
100.
Experiments with incentives in telephone surveys 总被引:4,自引:0,他引:4
In an effort to counter the problem of noncooperation, survey organizations are offering incentives to respondents with increasing frequency, some at the outset of the survey, as has traditionally been done in mail surveys, and some only after the person has refused, in an attempt to convert the refusal. This article reports on a series of experiments carried out over a period of about 2 years with a monthly telephone survey, the Survey of Consumer Attitudes, in an effort to increase response rates or reduce interviewer effort. We report on experiments with prepaid versus promised incentives; advance letters; and advance letters with prepaid incentives; and we also report on the effects of incentives on response quality, sample composition, response bias, interviewer and respondent expectations, and costs. 相似文献