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1.
Silphids in urban forests: Diversity and function 总被引:2,自引:0,他引:2
Many ecologists have examined the process of how urbanization reduces biological diversity but rarely have its ecological consequences been assessed. We studied forest-dwelling burying beetles (Coleoptera: Silphidae)—a guild of insects that requires carrion to complete their life cycles—along an urban-rural gradient of land use in Maryland. Our objective was to determine how forest fragmentation associated with urbanization affects (1) beetle community diversity and structure and (2) the ecological function provided by these insects, that is, decomposition of vertebrate carcasses. Forest fragmentation strongly reduced burying beetle diversity and abundance, and did so far more pervasively than urbanization of the surrounding landscape. The likelihood that beetles interred experimental baits was a direct, positive function of burying beetle diversity. We conclude that loss of burying beetle diversity resulting from forest fragmentation could have important ecological consequences in urban forests. 相似文献
2.
DEAN M.YOUNG PATRICK L. ODELL JOHN W. SEAMAN JR. 《Australian & New Zealand Journal of Statistics》1994,36(1):95-100
We present an explicit characterization of the joint dependency structure of an n×p matrix normal random matrix such that the p-dimensional sample mean vector is independent of all translation invariant statistics. 相似文献
3.
WEEKS M. F.; JONES B. L.; FOLSOM R. E. JR.; BENRUD C. H. 《Public opinion quarterly》1980,44(1):101-114
Finding a suitable respondent at home is an essential and expensivecomponent of a household survey. This article reports on theresults of a study of the probabilities of finding someone aged14 or older at home and discusses the application of such datato survey design and budgeting. 相似文献
4.
Jordan Belisle Kate Huggins Meghan Doherty Caleb R. Stanley Mark R. Dixon 《The Analysis of verbal behavior》2020,36(2):233
We sought to evaluate the efficacy of successive matching training for establishing generalized reflexive matching across 4 children with autism. In Experiment 1, differential reinforcement with delay fading was efficacious in establishing “yes” and “no” matching and nonmatching responses in 2 participants when 2 identical or nonidentical picture stimuli were presented. In addition, emergent visual–visual reflexive relational responses were observed using novel picture stimuli in a transfer test phase. In Experiment 2, differential reinforcement alone was efficacious in establishing matching and nonmatching responses in the other 2 participants when 2 identical or nonidentical objects were presented. Transfer to identical objects presented through touch (i.e., tactile discrimination) was additionally observed for both participants. Procedures in the study were adapted from the PEAK Relational Training System to aid in clinical replication, and the translational results have implications for language training with individuals with autism. 相似文献
5.
Stacey E. McElroy-Heltzel Tera R. Jordan Ted G. Futris Allen W. Barton Antoinette K. Landor Kameron J. Sheats 《Journal of youth studies》2019,22(1):124-137
Much of the literature on interpersonal trust is quantitative in nature, using scales developed primarily with White middle-class and upper-class adults. To understand how another racial group of a different socioeconomic background and age views interpersonal trust, we considered the experiences of 22 low-income Black adolescents. The adolescents participated in a relationship education program and were interviewed about their interpersonal trust experiences. Results of a qualitative data analysis revealed that most adolescents defined interpersonal trust based on honesty and fidelity, with a particular emphasis on monogamy in romantic relationships. Adolescents identified direct messages from family members and personal relationship experiences as sources of socialization for interpersonal trust. Although some adolescents reported that the relationship education program enhanced their understanding of and willingness to trust, others maintained that trust can only be learned through personal experiences. Though the adolescents generally trusted family members, they experienced challenges trusting friends and romantic partners. Despite this, adolescents considered interpersonal trust a vital and a necessary part of romantic relationships. We discuss implications of the findings for relationship stability and satisfaction. 相似文献
6.
Social work graduate programs have long grappled with ways to attract and retain students at the intersection of race and gender. The central structure of this analysis is a hermeneutic phenomenological qualitative study on the pursuit and persistence of African-American women in graduate Social Work programs at a Historically Black Institution (HBI). The data in this article were derived from the responses of 13 participants written in their own words. The themes that emerged around the pursuit of a social work degree were (a) service to Black communities, (b) resistance to misrecognition, and (c) a seat at the table. After sharing the salient characteristics of the findings, the article opens a discussion around the significance of HBIs in educating social workers to work in urban communities and the implications for policy and practice. 相似文献
7.
Chris Fox Jordan Harrison Caroline Marsh Andrew Smith 《International Review of Sociology》2018,28(1):35-61
Various approaches to personalisation are well-established in the UK social care sector and are now starting to ‘travel’ to other sectors. In this paper we report findings from an evaluation of a pilot to test elements of personalisation in the management of offenders in probation services within the English criminal justice system. Following a review of evidence from social care, three different approaches to personalised-practice were developed and tested on a small-scale in three separate sites. The evaluation finds that all three approaches were implemented reasonably successfully, but challenges were identified including that personalised approaches are more time-consuming, that staff need support to exercise professional discretion and that balancing greater choice with managing criminogenic risk requires new ways of conceptualising the relationship between case manager and service user. Overall, ‘deeper’ approaches to personalisation, such as co-production, will take time to emerge. This paper makes two important contributions to the debate on personalisation in public services. First, it addresses the question of how transferable the concept of personalisation is from the social care sector to other sectors in the UK, in this case the criminal justice system. Secondly, it outlines a methodology for developing and evaluating personalisation pilots, prior to a wider roll-out. 相似文献
8.
Jordan Soliz Allison R. Thorson Christine E. Rittenour 《Journal of marriage and the family》2009,71(4):819-832
Guided by the Common Ingroup Identity Model ( S. L. Gaertner & J. F. Dovidio, 2000 ) and Communication Accommodation Theory ( C. Shepard, H. Giles, & B. A. LePoire, 2001 ), we examined the role of identity accommodation, supportive communication, and self‐disclosure in predicting relational satisfaction, shared family identity, and group salience in multiracial/ethnic families. Additionally, we analyzed the association between group salience and relational outcomes as well as the moderating roles of multiracial/ethnic identity and marital status. Individuals who have parents from different racial/ethnic groups were invited to complete questionnaires on their family experiences. Participants (N = 139) answered questions about relationships with mothers, fathers, and grandparents. The results of the multilevel modeling analyses are discussed in terms of implications for understanding multiracial/ethnic families and family functioning. 相似文献
9.
Rural ethnic minorities occupy unique economic, social, as well as geographical places in Australian society. Non-Anglo-Celtic immigrants have transformed the rural landscapes through the construction of public and private spaces expressing their cultural heritage. These sites can also significantly impact the dynamics of social cohesion and inter-cultural relations in multicultural rural communities. The paper explores the potential role of the sites built by rural ethnic minorities in promoting both intra-group solidarity and inter-group dialogue. It also provides insights into complexities of multicultural place-making. The paper is divided into two parts. The first part briefly explores the literature on the migration and heritage, place, belonging and social cohesion, and the relationship between social capital and the built environment. The second part outlines empirical findings from Griffith, a regional town in New South Wales. The focus is on the places built by Italian immigrants, such as the Italian clubs and the recently built Italian Museum and Cultural Centre. The construction of these places facilitated a sense of solidarity among the Italian immigrants and expressed their belonging to place. However, the immigrant's attempts at place-making simultaneously involved inscribing a degree of exclusivity and a strategy of becoming more a part of their new environment. In doing this there is also potential for multicultural place-making to intensify the existing intra- and inter-group tensions. 相似文献
10.