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81.
The authorities in a number of advanced countries have produced intergenerational reports that seek to determine the fiscal sustainability of current policy parameters. The Australian government will publish its Intergenerational Report in May 2002. This paper attempts to place these reports in analytical perspective. We examine the notion of intergenerational equity, the conceptual basis for generational accounting, Australian efforts at constructing generational accounts, and then review the intergenerational reports of several other countries. The paper concludes with a brief synoptic discussion of various policies that can help Australian governments achieve intergenerational balance in future.  相似文献   
82.
Historically, U.S. regulators have derived cancer slope factors by using applied dose and tumor response data from a single key bioassay or by averaging the cancer slope factors of several key bioassays. Recent changes in U.S. Environmental Protection Agency (EPA) guidelines for cancer risk assessment have acknowledged the value of better use of mechanistic data and better dose–response characterization. However, agency guidelines may benefit from additional considerations presented in this paper. An exploratory study was conducted by using rat brain tumor data for acrylonitrile (AN) to investigate the use of physiologically based pharmacokinetic (PBPK) modeling along with pooling of dose–response data across routes of exposure as a means for improving carcinogen risk assessment methods. In this study, two contrasting assessments were conducted for AN-induced brain tumors in the rat on the basis of (1) the EPA's approach, the dose–response relationship was characterized by using administered dose/concentration for each of the key studies assessed individually; and (2) an analysis of the pooled data, the dose–response relationship was characterized by using PBPK-derived internal dose measures for a combined database of ten bioassays. The cancer potencies predicted for AN by the contrasting assessments are remarkably different (i.e., risk-specific doses differ by as much as two to four orders of magnitude), with the pooled data assessments yielding lower values. This result suggests that current carcinogen risk assessment practices overestimate AN cancer potency. This methodology should be equally applicable to other data-rich chemicals in identifying (1) a useful dose measure, (2) an appropriate dose–response model, (3) an acceptable point of departure, and (4) an appropriate method of extrapolation from the range of observation to the range of prediction when a chemical's mode of action remains uncertain.  相似文献   
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84.
This research responds to calls from within the field of urban ecology to explicitly incorporate humanities-based research in order to achieve robust interdisciplinarity. Our research provides an example of a place-based urban ecological analysis. We use this framework to analyze over a century of park planning and development within the city of Seattle. We identify four eras of park planning that are linked by a comprehensive 100-year park plan. This case study examines how the political, cultural, and economic aspects of park planning have produced and been influenced by long-term trends and historical contingencies. This research also offers practical insights for effective contemporary urban planning, emphasizing the need for flexible and adaptive long-term plans when confronted with unpredictable events, emerging political arrangements, changing cultural priorities, and shifting fiscal climates.  相似文献   
85.
In a content analysis of movie violence, we randomly selected twelve top-grossing American war films from four decades (1970 to 2002). We coded for implements of violence, length of violence, gore, and violence directed at noncombatants. We hypothesized that recently released war movies would be more violent than those released earlier. We found that films released since 1990 did contain more violence compared to others. Further, the intensity of gore increased in recently released movies.  相似文献   
86.
Abnormal experiences of the self defined here in terms ofdepersonalization may predispose individuals to aggressive behavior in situations that further alter their self-awareness. Conditions that raise self-awareness may inhibit the aggressive behavior of individuals prone to these abnormal experiences of self. In the current research, individuals prone to a distorted body image were least likely to express attitudes reflecting verbal hostility when their self-awareness was raised. Individuals prone to a sense of unreality about others were most likely to express attitudes that reflect physical aggression when their sense of social identity was raised. However, these attitudes were less likely in individuals prone to self-criticism whose social identity was enhanced. The results suggest that a multidimensional construct of depersonalization may aid in the prediction of aggressive behavior that is facilitated by situations that alter the individual’s sense of self.  相似文献   
87.
The Effects of Managerial Succession on Organizational Performance   总被引:1,自引:0,他引:1  
Boyne and Dahya (2002) posit that the means, motives, and opportunitiesavailable to top managers will affect their ability to impactorganizational performance. In this analysis, I test the theoryposited by Boyne and Dahya and expand the model by exploringwhether the performance effects of executive succession differbetween an internal promotion and an external hire. Using Texasschool superintendents as the managers in question, I use pooled,time-series data to test both the immediate and the long-termeffects of managerial succession on performance. The findingsreveal that an immediate, negative effect of executive successionis present only in the case of an externally hired replacementand that the long-term effect of managerial change on organizationalperformance is positive. These findings suggest that publicmanagerial succession does influence organizational performance.  相似文献   
88.
This paper illustrates how stance functions as a semiotic resource that feeds into and mediates institutional context. I consider stance not only as linguistic expression but as interactive, bodily engagement, synchronized in multimodal layers of participation. Using data from a focus group interview, I examine how stance emerges in the collaborative rhythms of linguistic, paralinguistic and, most prominently, embodied conduct between speaker and listener to index socio‐cultural knowledge about the jurisdictional division of labor among legal professionals. Drawing on Charles Frake's classic ‘Struck by speech,’ I illustrate not only how a speaker strikes his listener with speech, but also how the body of the listener displays being struck.  相似文献   
89.
90.
This research stresses the utility of evolutionary theory and comparative methodology for explaining warfare frequency. It is hypothesized that warfare frequency (external war, civil war, rioting, and feuding) is related to sociocultural development as indicated by cross-cultural measures of technology and social differentiation. The hypotheses were supported utilizing data drawn from the Human Relations Area microfilm Files on 132 contemporary and historical societies.  相似文献   
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