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961.
This study compared the peer functioning of a community sample of preschool boys with pervasive hyperactivity (N=33) and comparison boys (N=34), and examined the extent to which any differences in peer functioning between these groups could be explained by comorbid child conduct problems and parenting factors. The quality of boys’ peer relations was assessed on the basis of teacher and observer ratings of peer‐related behavior at preschool. The quality of parenting and boys’ behavior at home were assessed using the Parental Account of Children's Symptoms Interview, the Parenting Scale, and videotaped mother–son interactions. Boys with hyperactive behavior problems showed higher rates of aggressive, noncompliant, and nonsocial behaviors, and lower rates of prosocial behavior and peer acceptance than boys in the comparison group. These between‐group differences in social functioning remained significant following statistical control for the effects of conduct problems, highlighting the wide range of peer difficulties associated with preschool hyperactivity. Results of further analyses suggest that the quality of early mother–child interactions and the behavioral features of hyperactivity may make unique contributions to the 00development of peer relationship difficulties in preschool children with pervasive hyperactivity. 相似文献
962.
Daniel J. Christie 《The Journal of social issues》2006,62(1):1-17
Peace psychology emerged as a distinct area of research and practice during the Cold War, when the preeminent concern was the prevention of nuclear war. Now global in scope, the focal concerns of peace psychologists are nuanced by geohistorical contexts and the distinction between episodic violence and structural violence, the latter of which also kills people, albeit slowly through the deprivation of basic need satisfaction. Accordingly, the focal concerns of contributors to this issue vary depending on geohistorical context: some being primarily concerned with patterns of behavior and cognition involved in the prevention of violent episodes and others with the amelioration of structural violence. A systems perspective is used as a framework for integrating episodes and structures of violence and peace. Articles emphasizing "systemic violence" demonstrate the interplay between structures and episodes of violence. Articles on "systemic peacebuilding" examine intergroup contact, the nonviolent management of conflict, and movement toward socially just structures, thereby yielding an increase in cooperative and equitable relationships across levels, from interpersonal to intergroup. 相似文献
963.
The daily diary method was used to examine the daily dynamics of adolescent sleep time, activities, and psychological well‐being among an ethnically diverse sample of over 750 adolescents approximately 14–15 years of age. Studying and stressful demands during the day were modestly but consistently associated with less sleep that evening. Receiving less sleep at night, in turn, was modestly but consistently related to higher levels of anxiety, depressive feelings, and fatigue during the following day. In addition, the daily variability in adolescents' sleep time was notable and just as important for the youths' average levels of daily psychological well‐being as was the average amount of time spent sleeping each night. A small number of ethnic and gender differences emerged in the dynamics of adolescent sleep, activities, and well‐being. Discussion focuses on the importance of examining variability in adolescents' sleep behaviors in order to better understand the implications of sleep for adolescent well‐being and development. 相似文献
964.
Differences in performance across different locations of a humanservice program may be driven by client, managerial, organizational,policy, or environmental characteristics. While many of thesefactors are outside the control of local managers, other factorsmay be open to influence by local discretion and may have independenteffects on performance. One issue facing local managers is howto divide job tasks among frontline staff, but little evidenceis available regarding whether job design is related to performance.In this article, I examine the relationships between differentcasework task configurations and welfare-to-work office performance.Controlling for a number of client and office characteristics,I find that clients' average earnings are higher over a two-yearperiod in offices that primarily use unified case managementand in offices with a specialist who develops job opportunities.I find no effects on earnings in offices that use other kindsof specialists and no effects of unified case management orspecialists on welfare benefit receipt in the two-year period.Overall, the findings suggest that local managerial decisionsregarding job design help explain the variation in performanceacross offices and suggest a possible lever through which performancecan be improved. 相似文献
965.
Urban vegetation is commonly described as dominated by weedy species that are adapted to human disturbance. In this study,
we determined the original (pre-agriculture) habitats of urban plant species sampled quantitatively in the spontaneous vegetation
of a university campus in Halifax, Nova Scotia (eastern Canada). We sampled 11 distinct patch types corresponding to different
built forms. Differences in vegetation among patch types were related in part to environmental variables such as soil moisture
and light availability. The urban vegetation was dominated by species from rocky habitats such as cliffs and talus slopes,
with lesser representation from grassland and floodplain habitats. When compared to a null model of species origins based
on the global area and species richness of different original habitats, species from rock outcrops and grassland habitats
were overrepresented in the urban vegetation. These results contrast with the received view that cities represented highly
“unnatural” ecosystems: built form appears to replicate the habitat templates required by rock outcrop species. Urban ecological
theory should incorporate the replication of habitat analogs by built forms in addition to the creation of ecologically novel
habitats. 相似文献
966.
Wildlife-human interactions are increasing in prevalence as urban sprawl continues to encroach into rural areas. Once considered
to be unsuitable habitat for most wildlife species, urban/suburban areas now host an array of wildlife populations, many of
which were previously restricted to rural or pristine habitats. The presence of some wildlife species in close proximity to
dense human populations can create conflict, forcing resource managers to address issues relating to urban wildlife. However,
evidence suggests that wildlife residing in urban areas may not exhibit the same life history traits as their rural counterparts
because of adaptation to human-induced stresses. This creates difficulty for biologists or managers that must address problems
associated with urban wildlife. Population control or mitigation efforts aimed at urban wildlife require detailed knowledge
of the habits of wildlife populations in urban areas. This paper describes the history of wildlife in urban areas, provides
examples of wildlife populations that have modified their behavior as an adaptation to urban stresses, and discusses the challenges
that resource managers face when dealing with urban wildlife. 相似文献
967.
Ecosystem restoration is critically important in urbanized landscapes because habitat degradation is severe and ubiquitous in such areas. Because successful restoration requires specification of desired environmental endpoints, a generally applicable method for valuing and comparing possible restoration endpoints is needed. One method available for comparative valuation is the Analytical Hierarchy Process (AHP). AHP allows a suite of alternatives to be valued on a rank scale based on simple, tractable, paired comparisons among all alternatives. Given a sound technical foundation for the paired comparisons, the method yields an objective set of rank values. By incorporating the relative values of various restoration alternatives in a restoration scaling evaluation such as a Habitat Equivalency Analysis (HEA), restoration programs can be designed effectively both qualitatively (in terms of the kinds of resources or habitats desired) and quantitatively (in terms of the amounts or areas of each). In this study, we develop and apply AHP in the context of a specimen HEA for US Mid-Atlantic coast estuaries. By ranking various habitat types as potential restoration targets based on their value for a suite of key natural resources, a series of restoration ratios is produced, relating relative habitat areas of each type needed to offset specific impairment levels. These ratios provide a basic tool for restoration planning in urbanized estuaries, as these comprise nearly entirely built environments with little or no natural habitat. Under these conditions, restoration planners must specify desired states of the ecosystem, and the restoration ratios allow various permutations of presumed post-restoration environments to be valued and compared. 相似文献
968.
Fundamental within Singapore's modernisation push ‘From Third World to First’ was the long-term strategy of establishing a Singapore identity based on multiracialism, multilingualism, multiculturalism and multireligiousity (the ‘4Ms’). But while wholesale landscape changes have largely removed earlier associations between ethnicity and residence, government promotion of a shared Singapore identity has been frustrated by the lagging educational and socio-economic achievements of Singapore's Malay minority. Prior to the events of ‘9/11’ government concern had centred on the growing popularity of private Islamic schools, or madrasahs, which in the government's view could affect educational standards in the city-state. However, following the destruction of the World Trade Center government attention was quickly shifted to the promotion of ‘racial harmony’ and Singaporeans were urged to ‘get to know your neighbours’ in a tacit admission that 40 years of ‘racial’ assimilation had yet to produce ethnically integrated, cross-cultural community spirit. Subsequent events, particularly the arrest of local Jemaah Islamiyah operatives and the destruction in Iraq, have impacted most strongly upon Singapore's Malay-Muslim community and posed challenges to its identity within a multicultural society. 相似文献
969.
C. Nakhanakhup P. Moungmee H. J. Appell J. A. Duarte 《European review of aging and physical activity》2006,3(1):10-19
It is widely accepted that regular physical exercise helps diabetic patients control blood glucose, reduce cardiovascular risk factors, and prevent other related complications. In spite of the undoubted benefits of regular physical exercise, diabetic patients with chronic complications should be aware of potential hazards of practicing exercise. To avoid some harmful consequences of acute exercise, it is necessary to adopt a vigilant attitude with these risk patients and to carefully adjust type and intensity of exercise to the individual situation. This article intends to summarize and analyze the current literature concerning the preventive and therapeutic effects of regular exercise in diabetic patients, pointing out its physiological influence on blood glucose regulation, and to analyze the potential risks of acute physical exercise and the precautions given to patients with a variety of complications. 相似文献
970.
Beverly J. Wilson 《Social Development》2006,15(3):463-479
This study investigated the entry behavior and temperamental characteristics of aggressive/rejected and nonaggressive/popular kindergarten and first‐grade children. An analog entry situation was used to assess children's entry skills. Aggressive/rejected children had more difficulty than nonaggressive/popular children delivering their entry bids in a well‐timed manner and engaged in more disruptive entry strategies. They also tended to use more aggressive entry strategies after experiencing entry failure. The children's temperamental characteristics accounted for significant variance in their entry behavior. Temperamental fear made a positive contribution to children's use of socially appropriate entry strategies. The children's status and impulsiveness each explained unique variance in their use of disruptive entry strategies. Aggressive/rejected girls were more impulsive than other groups and tended to be less fearful. 相似文献