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831.
This paper analyses the interrelation between the transport system and measures of resource consumption such as material and energy consumption over a 60-year period (1937–1997) in the UK. Non-motorized transport and time consumption for mobility are estimated in addition to conventional measures of transport. During the period analyzed, the UK population grew by 20% while transport of goods and persons increased more than threefold and material and energy consumption almost doubled. The transport intensity of domestic material input (DMI) doubled to 300 ton-kilometers (tkm) per ton of DMI while the transport intensity of domestic energy consumption (DEC) doubled to 20 tkm per gigajoule (GJ) of DEC. Thus, while the material and energy intensity of GDP declined significantly, a well-established trend in many advanced countries, the transport intensity of materials and energy consumption rose. These findings suggest a close link between transport, economic development, and long-term structural transformations. In the case of personal transport, a rebound effect was also observed: whereas the average speed of transport has greatly increased, the average number of hours per day devoted to personal transport has not declined. 相似文献
832.
Branden B. Johnson 《Risk analysis》2004,24(1):131-145
Despite many claims for and against the use of risk comparisons in risk communication, few empirical studies have explored their effect. Even fewer have examined the public's relative preferences among different kinds of risk comparisons. Two studies, published in this journal in 1990 and 2003, used seven measures of "acceptability" to examine public reaction to 14 examples of risk comparisons, as used by a hypothetical factory manager to explain risks of his ethylene oxide plant. This study examined the effect on preferences of scenarios involving low or high conflict between the factory manager and residents of the hypothetical town (as had the 2003 study), and inclusion of a claim that the comparison demonstrated the risks' acceptability. It also tested the Finucane et al. (2000) affect hypothesis that information emphasizing low risks-as in these risk comparisons-would raise benefits estimates without changing risk estimates. Using similar but revised scenarios, risk comparison examples (10 instead of 14), and evaluation measures, an opportunity sample of 303 New Jersey residents rated the comparisons, and the risks and benefits of the factory. On average, all comparisons received positive ratings on all evaluation measures in all conditions. Direct and indirect measures showed that the conflict manipulation worked; overall, No-Conflict and Conflict scenarios evoked scores that were not significantly different. The attachment to each risk comparison of a risk acceptability claim ("So our factory's risks should be acceptable to you.") did not worsen ratings relative to conditions lacking this claim. Readers who did or did not see this claim were equally likely to infer an attempt to persuade them to accept the risk from the comparison. As in the 2003 article, there was great individual variability in inferred rankings of the risk comparisons. However, exposure to the risk comparisons did not reduce risk estimates significantly (while raising benefit estimates), and Conflict-Claim respondents found the risk of the hypothetical factory less acceptable than No-Conflict respondents. Results suggest that neither risk comparisons nor risk acceptability claims are automatically anathema to audiences, but they may have tiny or unintended effects on audience judgments about risky situations. 相似文献
833.
En route to the top. Requirements on candidates for top positionsThe assessment of candidates for positions as managing director or as an executive committee member by means of management diagnostics has been frowned upon by German companies for a long time. There has, however, been a clear change of opinion regarding this matter in the meantime. The authors have developed a model of requirements to assess the competencies and potential critical for success. Six areas of responsibility are differentiated between thereby: “Ability to cope with complexity” and “development of decidedness”, “Will to create” and “establishment of structures”, “Establishment of bonds” and “ability of self-management”, and are divided into three levels: the personal level, the co-operative level and the level of corporate culture respectively. 相似文献
834.
This study investigates the association between air-lead levels and crime rates across 2,772 U.S. counties. Data for the analysis come from the Environmental Protection Agency, the Bureau of Census, and the Federal Bureau of Investigation. Results suggest that air-lead levels have a direct effect on property and violent crime rates even after adjusting for general levels of air pollution and several structural covariates of crime. We also find that resource deprivation interacts with air-lead levels. The association between air-lead levels and crime rates-property and violent-is strongest in counties that have high levels of resource deprivation and weakest in counties that have low levels of deprivation. This interaction is consistent with arguments and evidence in the health care literature that populations most at risk of lead poisoning are least likely to get the resources required to prevent, screen, and treat the illness. 相似文献
835.
Nobre PJ Wiegel M Bach AK Weisberg RB Brown TA Wincze JP Barlow DH 《Journal of sex research》2004,41(4):363-371
Men with and without sexual dysfunction present with varying patterns of agreement between subjective estimates of sexual arousal and more objective psychophysiological measures of the same construct. This relative accuracy seems to be associated with sexual function, with men who have sexual dysfunction presenting less accurate estimations (mostly reporting below measured arousal levels). The purpose of this study is to clarify the processes underlying sexual arousal and the accuracy of its self-estimation. We looked at potential predictors of sexual arousal (subjective and physiological) and accuracy in estimating objective sexual arousal in a sample of 60 sexually functional males. Predictors included pre-existing sexual attitudes (erotophobia), both trait and state positive and negative affect, self-focused attention, and interoceptive awareness. Results indicate that this sexually functional sample generally reported below their own erection level. Interestingly, trait negative affect was associated with somewhat lower levels of subjective arousal and higher levels of physiological arousal. On the other hand, state positive affect facilitated both subjective and objective arousal and increased somewhat the accuracy of estimates of erectile responding. Pre-existing sexual attitudes as well as variations in self-focused attention and interoceptive awareness evidenced little effect on sexual arousal or the accuracy of its estimation. 相似文献
836.
This study explored the association between attendance at the "Bud World Party," a family entertainment venue created by Anheuser-Busch for the 2002 Winter Olympics, and alcohol-related beliefs and current drinking behaviors for a group of 7th and 8th graders who attend a middle school in close proximity to the downtown Salt Lake City plaza where the exhibit and related events were located. Data were collected via a questionnaire administered to 283 students 30 days after the closing ceremonies.. Logistic regression was used to predict recent alcohol consumption. Significant predictors were race (non-white) (OR = 3.9), religiosity (OR = .72), having a parent who drinks (OR = 4.8), the number of best friends who drink (OR = 2.5), and the interaction for "Bud World Party" attendance and gender (OR = 33.2). Post-hoc analysis of the interaction effect indicated that the relationship between "Bud World Party" attendance and recent alcohol consumption is moderated by gender. Girls who visited "Bud World Party" were more likely than the boys to have consumed alcohol in the past 30 days. In addition, the girls who visited "Bud World Party" were more likely to believe that drinking would increase their chances of popularity at school than the students who did not. 相似文献
837.
Say Yes First--To Rural Youth and Family Alcohol/Drug Prevention (SYF) was a 5-year, federally-funded U.S.D.H.H.S. Center for Substance Abuse Prevention (CSAP) project that involved 859 children in the class of the year 2000. The children in four rural school districts were followed from Grade 4 to Grade 8 from 1991 to 1996. Initial results in a previous publication showed significant lower drug usage in this cohort than comparison students. A follow-up of 120 SYF participants and 136 comparison students in high schools using the National Youth Survey (Follow Up Questionnaire) indicated lower usage of alcohol, tobacco and other drugs for the program students and lower lifetime prevalence of marijuana use for program vs. comparison students. SYF students had higher course grades, lower school absenteeism, more positive attitudes toward school, less trouble in school and less negative self-appraisal. Program students also reported greater participation in sports, more family communication and fewer disagreements or arguments with their parents. 相似文献
838.
The author's dual-purpose evaluation assesses the effectiveness of formal collaboratives in stimulating organizational changes to improve chronic illness care (the chronic care model or CCM). Intervention and comparison sites are compared before and after introduction of the CCM. Multiple data sources are used to measure the degree of implementation, patient-level processes and outcomes, and organizational and team factors associated with success. Despite challenges in timely recruitment of sites and patients, data collection on 37 participating organizations, 22 control sites, and more than 4,000 patients with diabetes, congestive heart failure, asthma, or depression is nearing completion. When analyzed, these data will shed new light on the effectiveness of collaborative improvement methods and the CCM. 相似文献
839.
In the last 15 years, a substantial number of studies have tested the theoretical validity of Bowen family systems theory. A review of this basic research provided empirical support for the relationship between differentiation and chronic anxiety, marital satisfaction, and psychological distress. Bowen's assumption that couples with the same level of differentiation marry was not supported. His specific theories of sibling position and triangulation also received little empirical support. Research on multigenerational transmission has generally ignored Bowen's theoretical perspective, and more research needs to test Bowen's claim that his theory is universal. In addition, researchers still need to examine the effect of differentiation on child functioning, physical health problems, and adaptability. 相似文献
840.