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51.
Recent investigations about notions of bivariate aging have underlined the need to introduce some new properties of positive dependence for a bivariate random vector. Here, by using the recent notion of supermigrativity of a bivariate copula, a?positive dependence property is introduced and investigated. Comparisons with other notions of positive dependence are also presented. 相似文献
52.
Luis Roberto Benia Nelson Hauck-Filho Mariana Dillenburg Lilian Milnitsky Stein 《Journal of child sexual abuse》2013,22(3):259-279
Systematic review and meta-analysis of literature were conducted examining the effectiveness of the National Institute for Child Health and Human Development Investigative Interview Protocol in improving the quality of child forensic interviews. Online databases were searched for journal articles published between the years 2000 and 2013. Measures of interview quality were the type of interviewer utterances and the amount of information provided by children. Five studies met criteria for inclusion in the meta-analysis. Weighted mean of the effect sizes was calculated for each outcome measure. Protocol interviews had more invitations (g = 1.60) and fewer option-posing (g = ?.95) and suggestive prompts (g = ?.63) than standard interviews. Children interviewed by the protocol provided more central details (g = .90) in response to invitations than controls. Meta-analyses of a subset of preschool children samples revealed that protocol interviews had more invitations (g = 1.46), fewer suggestive prompts (g = ?.61), and fewer option-posing prompts (g = ?1.05) than controls. Findings corroborate results from previous studies that suggested the benefits of the protocol on the interviewers’ performance and on children’s informativeness. However, protocol did not show the same performance with regard to preschool children. 相似文献
53.
Fiorenzo Laghi Roberto Baiocco Eleonora Cannoni Anna Di Norcia Emma Baumgartner Anna Silvia Bombi 《Children and youth services review》2013
This study examined the relationship between friendship representation and internalizing and externalizing problems in school-aged children. One hundred Caucasian 6–7 year-old children (50 males and 50 females) and their mothers took part in the study. The Draw-a-Man Test, the Pictorial Assessment of Interpersonal Relationships, and the Child Behavior Checklist (CBCL/6-18) were used. Children with internalizing problems, externalizing problems, comorbid internalizing and externalizing problems, and a control group were compared on their pictorial representations of friendship. Results showed that children with externalizing problems included more pictorial indices of each friend's autonomy and a larger imbalance of importance between them; children with internalizing problems drew themselves as less similar to their friends. In conclusion, children's pictorial representation allows exploring some aspects of their tacit knowledge about the relationship with a best friend, which is not easily expressed verbally by young children. Finally, the implications of these findings for theoretical and empirical research development on friendship are discussed. 相似文献
54.
Roberto?M.?CorvalánEmail author Mauricio?Osses Cristian?M.?Urrutia Patricio?A.?González 《Population and environment》2005,27(1):63-87
A macro-scale methodology for vehicle emissions estimation is described. The methodology is based on both correlations between
activity level and PM, CO, THC and NO
x
vehicle emissions and relationships between demographic and socio-economic variables and transportation activity level. First,
pollutant emissions were correlated with transportation activity, expressed as vehicle-km/year, using existing data collected
from mobile sources emission inventories in nine urban cities of Chile. Second, demographic and socio-economic variables were
pre-selected from those that could intuitively be correlated with vehicle activity level and considering the data availability.
Using the individual R
2 correlation coefficient as variable selection criterion, population, the number of vehicles, fuel consumption, gross domestic
product, average family incomes and road kilometers were finally chosen. A different set of explicative variables was considered
for different vehicle categories, based on the selection criterion above mentioned. Then, correlation functions between these
variables and transport activity were obtained by non-linear Gauss–Newton least square method. This methodology was applied
to eighteen provinces of the country obtaining total annual emission for mobile sources, divided into six main vehicles categories. 相似文献
55.
Nicola Nardelli Roberto Baiocco Annalisa Tanzilli Vittorio Lingiardi 《Journal of homosexuality》2020,67(10):1386-1400
ABSTRACT Several studies have highlighted the relationship between internalized sexual stigma (ISS) and dissociation. The aim of the present study was to empirically investigate this relationship through a quantitative study. The Measure of Internalized Sexual Stigma for Lesbians and Gay Men (MISS-LG) and the Dissociation Scale (DIS) of the Trauma Symptom Inventory (TSI) were administered to 120 Caucasian participants who self-identified as gay men. Findings suggested that dissociative symptomatology, as measured by DIS—an estimation of the use of dissociation as a defense mechanism—was positively associated with MISS general index and all dimensions of MISS, especially the sexuality dimension (ISS-S). Moreover, the effect of the ISS-S on DIS was amplified in Catholic participants, suggesting a moderating role of religiosity. Implications for future research and clinical practice are discussed. 相似文献
56.
In this paper, we predict that venture capital (VC) backed initial public offerings (IPOs) will attract more attention than non-VC-backed IPOs, as VCs offer important signals to investors searching for information about entrepreneurial firms. We use a measure developed by Google (i.e., Trends) to capture the spikes in investors' attention experienced by firms in the time period surrounding their IPOs. Our results demonstrate that firms backed by VCs enjoy a far greater spike in attention than their counterparts. Furthermore, we find that firms with more prominent VCs, a larger number of VCs, and VCs situated at farther geographic distances exhibit significantly greater spikes in investors’ attention during the week of their IPO. Combined, the findings show a clear demarcation between entrepreneurial firms with or without VC backing, they bring to the fore new upshots stemming from the relationship between VCs and entrepreneurial firms, and they raise new potential questions on this relationship and beyond. 相似文献
57.
Katherine R. Allen Rosemary Blieszner Karen A. Roberto 《Journal of marriage and the family》2000,62(4):911-926
Research on families in the middle and later years came into its own during the 1990s, documenting the complexity, malleability, and variety of older family connections. We examined 908 articles on family gerontology topics, observing 4 trends: Conceptually, an appreciation for pluralism and resilience as individuals and families age is apparent. Theoretically, life course, feminist, socioemotional selectivity, and family solidarity theories are increasingly applied to intergenerational family relations. Methodologically, new interest in qualitative methods for studying diverse groups has improved the depth with which aging studies can account for variability in old age; new quantitative methodologies have allowed greater sophistication in dealing with longitudinal data. Substantively, there is greater understanding of family caregiving, social support, parent‐child relationships, marital transitions, and grandparenting relationships. The field is poised to take even greater risks in fulfilling the promise of studying linked lives over time. 相似文献
58.
59.
This study explores the role of multiorganizational fields in recruitment to social movements. We study applicants to the 1964 Mississippi Freedom Summer project from two sites: the University of California at Berkeley and the University of Wisconsin at Madison. Using network analysis, we develop a model of recruitment that predicts participation on the basis of the structural positions of individuals within the multiorganizational fields, as well as on the basis of individual background factors. We also study the role that the recruitment context plays, by comparing the results at these two universities. Independent of the individual background factors, structural position in the multiorganizational field predicts participation in Freedom Summer at Wisconsin, but not at Berkeley. The effects of individual background factors on participation are also contingent on the recruitment context. We discuss the theoretical implications of our results for the study of the effects of multiorganizational fields and recruitment contexts on participation in social movements. 相似文献
60.