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181.
Ted G. Futris Robert B. Nielsen Spencer B. Olmstead 《Child and Adolescent Social Work Journal》2010,27(1):1-20
Becoming an adolescent father truncates young males’ opportunities to complete high school and secure employment, which can
hinder their capacity to contribute financial and social capital to their children. Based on 69 adolescent mother reports,
results suggest that whereas employment status is associated with adolescent fathers’ physical and financial presence, high
school completion is strongly associated with the nature and quality of parenting and co-parenting behaviors. Implications
for school counselors, teachers, social workers, and future research are discussed. 相似文献
182.
Ole E. Barndorff‐Nielsen Neil Shephard 《Econometrica : journal of the Econometric Society》2004,72(3):885-925
This paper analyses multivariate high frequency financial data using realized covariation. We provide a new asymptotic distribution theory for standard methods such as regression, correlation analysis, and covariance. It will be based on a fixed interval of time (e.g., a day or week), allowing the number of high frequency returns during this period to go to infinity. Our analysis allows us to study how high frequency correlations, regressions, and covariances change through time. In particular we provide confidence intervals for each of these quantities. 相似文献
183.
Ole E. Barndorff‐Nielsen Asger Lunde Neil Shephard Almut E.D. Veraart 《Scandinavian Journal of Statistics》2014,41(3):693-724
This paper introduces a new continuous‐time framework for modelling serially correlated count and integer‐valued data. The key component in our new model is the class of integer‐valued trawl processes, which are serially correlated, stationary, infinitely divisible processes. We analyse the probabilistic properties of such processes in detail and, in addition, study volatility modulation and multivariate extensions within the new modelling framework. Moreover, we describe how the parameters of a trawl process can be estimated and obtain promising estimation results in our simulation study. Finally, we apply our new modelling framework to high‐frequency financial data. 相似文献
184.
185.
In this article, we discuss the challenge of determining the number of classes in a family of finite mixture models with the intent of improving the specification of latent class models for criminal trajectories. We argue that the traditional method of using either the Proc Traj or Mplus package to compute and maximize the Bayesian Information Criterion (BIC) is problematic: Proc Traj and Mplus do not always compute the MLE (and hence the BIC) accurately, and furthermore, BIC on its own does not always indicate a reasonable-seeming number of groups even when computed correctly. As an alternative, we propose the new freely available software package, crimCV, written in the R-programming language, and the methodology of cross-validation error (CVE) to determine the number of classes in a fair and reasonable way. In this article, we apply the new methodology to two samples of N = 378 and N = 386 male juvenile offenders whose criminal behavior was tracked from late childhood/early adolescence into adulthood. We show how using CVE, as implemented with crimCV, can provide valuable insight for determining the number of latent classes in these cases. These results suggest that cross-validation may represent a promising alternative to AIC or BIC for determining an optimal number of classes in finite mixture models, and in particular for setting, the number of latent classes in group-based trajectory analysis. 相似文献
186.
Mediating Role of Psychological Capital in the Relationship between Social Support and Wellbeing of Refugees
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Alexander Newman Ingrid Nielsen Russell Smyth Giles Hirst 《International migration (Geneva, Switzerland)》2018,56(2):117-132
This study examines the relationship between social support from work and non‐work domains and the wellbeing of refugee employees. In addition, it examines the mediating influence of psychological capital on these relationships. Using data from 190 refugee employees living in Australia, we find that while perceived organizational support and perceived family support are positively related to the wellbeing of refugee employees, the relationship between perceived supervisor support and wellbeing is not significant. Additionally, while we find that PsyCap fully mediates the relationship between perceived organizational support and wellbeing, it only partially mediates the relationship between perceived family support and wellbeing. 相似文献
187.
Kræn Blume Mette Ejrnæs Helena Skyt Nielsen Allan Würtz 《Journal of population economics》2009,22(4):881-908
In developed countries, immigrants are more likely to be nonemployed and self-employed compared to natives. Based on register
data of male immigrants in Denmark, we performed a detailed investigation of the immigrant–native difference in transition
patterns across labor market states. We find that a high proportion of immigrants from non-Western countries tend to be marginalized
relative to natives, and they tend to use self-employment to escape marginalization.
相似文献
Allan WürtzEmail: |
188.
Johanne Smith‐Nielsen Theis Lange Katrine I. Wendelboe Rie K. von Wowern Mette S. Vver 《Infancy》2019,24(4):663-670
Maternal postpartum depression (PPD) has been found to be related to infant social withdrawal during mother–infant interaction, and this may spill over on infant interactive behavior in other social contexts and impact infant psychosocial development. We investigated whether PPD was associated with infant social withdrawal during interaction with a tester in a psychological test situation and whether infant social withdrawal in the test situation mediated the association between PPD and infant cognitive scores reported in a previous study. Participants were 28 PPD dyads and 41 control dyads. We assessed infant social behavior and cognitive development with the Alarm Distress Baby Scale and the cognitive scale of the Bayley Scales of Infant and Toddler Development, third edition, at four months. More symptoms of maternal depression were associated with more infant social withdrawal. The association between maternal depressive symptoms and cognitive scores was at most partially mediated by infant social withdrawal in the test situation (<29.6%). Our results add to the existing literature on the effects of PPD on infant social behavior in other contexts than the one constituted by the mother. More research is needed to shed light on the mechanisms through which PPD impacts infant cognitive development. 相似文献
189.
Kristian Roed Nielsen 《European Management Journal》2018,36(6):695-707
Crowdfunding has become a rapidly growing source of alternative financing for a wide range of products and service ideas. The crowdfunding process itself necessitates the successful interaction between a number of actors including the central organizing platform, a number of content providing campaigns, and a large diverse group of funders. By utilizing the literature on complete and partial organizations and rejecting the commonly applied organizational molds to describe the process, this paper proposes that crowdfunding is organized and enabled as a fluid and co-dependent interaction between the various actors. The concept of partial organizations and its emphasis on key organizational decisions reveal that crowdfunding may be conceived of as a “co-dependent organization” in which the relationship of the involved actors is so interdependent that the crowdfunding process can neither be maintained nor implemented without it. 相似文献
190.