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151.
María Elena González 《The American statistician》2013,67(4):200-211
The formulas and data used for 13 federal programs that allocate funds to state and local areas are described. Suggestions for types of formulas and data appropriate for allocation of funds are made. Some recommendations in the Report on Statistics for Allocation of Funds published by the Office of Federal Statistical Policy and Standards are discussed. The possible effects of the formulas and data used in the allocation of funds for federal programs are examined in the light of the recommendations given in the report. 相似文献
152.
W. González-Manteiga M. D. Martínez-Miranda R. Raya-Miranda 《Statistics and Computing》2008,18(3):297-312
Sizer Map is proposed as a graphical tool for assistance in nonparametric additive regression testing problems. Four problems
have been analyzed by using SiZer Map: testing for additivity, testing the components significance, testing parametric models
for the components and testing for interactions. The simplicity and flexibility of SiZer Map for our purposes are highlighted
from the performed empirical study with several real datasets. With these data, we compare the conclusions derived from SiZer
analysis with the global results derived from standard tests, previously proposed in the literature. 相似文献
153.
Graciela Boente Daniela Rodriguez Wenceslao González Manteiga 《Scandinavian Journal of Statistics》2014,41(1):259-275
In this paper, we study the problem of testing the hypothesis on whether the density f of a random variable on a sphere belongs to a given parametric class of densities. We propose two test statistics based on the L2 and L1 distances between a non‐parametric density estimator adapted to circular data and a smoothed version of the specified density. The asymptotic distribution of the L2 test statistic is provided under the null hypothesis and contiguous alternatives. We also consider a bootstrap method to approximate the distribution of both test statistics. Through a simulation study, we explore the moderate sample performance of the proposed tests under the null hypothesis and under different alternatives. Finally, the procedure is illustrated by analysing a real data set based on wind direction measurements. 相似文献
154.
We address the problem of robust model selection for finite memory stochastic processes. Consider m independent samples, with most of them being realizations of the same stochastic process with law Q, which is the one we want to retrieve. We define the asymptotic breakdown point γ for a model selection procedure and also we devise a model selection procedure. We compute the value of γ which is 0.5, when all the processes are Markovian. This result is valid for any family of finite order Markov models but for simplicity we will focus on the family of variable length Markov chains. 相似文献
155.
156.
José M. González-González 《Identities: Global Studies in Culture and Power》2013,20(5):633-648
Migratory movements are one of the most remarkable demographic, social and psychological phenomena in today’s world. For the people involved, these migrations pose a radical change in environment and in their lives as they face adaptation to new perceptions, values and behaviours. All these lead to major challenges and repercussions for their personal and social identities. Using the Theory of Social Identity as our interpretative framework, together with a qualitative methodology based on semi-structured interviews, we have researched the entrepreneurial behaviour seen in 94 immigrants. We show the strategies adopted by these immigrants for personal mobility, social creativity and social competition to cope with the negative social identity derived from the occupational segregation and socio-labour exclusion they experience in the labour market and as mechanisms for psychosocial adaptation to the social, political, economic and labour characteristics in their environment. 相似文献
157.
Deborah Koniak-Griffin Rong Huang Janna Lesser Evelyn González-Figueroa Sumiko Takayanagi William G. Cumberland 《Journal of sex research》2013,50(5):483-493
Rising rates of heterosexually transmitted HIV among youth and young adults, particularly from ethnic minorities, create an urgent need to understand risk factors and perceptions of risk within the context of couple relationships. This study examined reports of young mothers and fathers (predominantly Latino) about background characteristics, relationship quality and length, HIV-related risk factors, and perceptions of partners’ behaviors and personal history. Higher concordance was found for relationship characteristics and partners' personal history (e.g., incarceration) than on shared sexual behaviors. Most males and females stated that they were monogamous; however, those whose partners reported concurrency were unaware of this. Many were unaware of their partners’ HIV testing status. Relationship quality was higher when females accurately perceived their partners' self-reported HIV-related risk behaviors. Length of the relationship did not influence concordance. Findings support the need for HIV prevention programs to promote open discussion about condom use and HIV testing within sexual partnerships. 相似文献
158.
A Complexity Approach to Psychological Well-Being in Adolescence: Major Strengths and Methodological Issues 总被引:3,自引:0,他引:3
Psychological well-being in adolescence is an increasing field of study. Deepening in its knowledge during this period of
life can be of a lot of help to the designing of more adjusted prevention programs aimed to avoid or reduce the problems adolescents
might be experiencing. Complexity theories can be a productive alternative to the important limitations explanations about
psychological well-being in adolescence have nowadays. Answers to a questionnaire have been obtained from a sample of 968
Catalan adolescents from 12 to 16 years old including 29 psychological well-being indicators measuring 8 dimensions related
to satisfaction with specific life domains, self-esteem, perceived social support, perception of control and values.A structural
equation modelling approach to complexity that focuses on the non-linearity property has been followed. Given the large number
of dimensions, the model has been estimated in two steps. First, a confirmatory factor analysis model has been fitted to the
29 indicators and appropriate factor scores have been saved. Then all possible products and squared terms of the factor scores
have been computed and have been used as predictors of the dependent variable using an ordered logit model.The results show
that a non-linear model including interaction effects among the 8 dimensions, age and gender, has a higher explanatory power
to predict satisfaction with life as a whole, compared to a linear model estimated from those same indicators.This work must
be understood as a first step, basically a methodological one, to the future elaboration of new models of psychological well-being
in adolescence to be based on the principles defended by complexity theories. 相似文献
159.
The Well-Being of 12 - to 16-Year-Old Adolescents and their Parents: Results from 1999 to 2003 Spanish Samples 总被引:2,自引:0,他引:2
Ferran Casas Cristina Figuer Mònica González Sara Malo Carles Alsinet Sandra Subarroca 《Social indicators research》2007,83(1):87-115
This study adopts satisfaction with life as a whole and satisfaction with specific life domains as indicators to analyse the
relationships between the well-being of 12 to 16-year-old adolescents and some related constructs such as self-esteem, perceived
control and perceived social support. Well-being indicators from a 2003 Spanish sample using an 11-point scale (N = 1,634) are compared with an equivalent 1999 Spanish sample using a 5-point scale (N = 1,618). The different results obtained from the 2003 sample with a Principal Component Analysis (PCA) using a shorter and
a longer list of life domains are also discussed. A sub-sample of the adolescents’ results from the 2003 sample are compared
with their parents’ answers, using the same well-being indicators. Using a list of 8 life domains, and despite the change
of scale used, overall results show no relevant changes in adolescents’ satisfaction with life domains between 1999 and 2003
in Spain and are in agreement with normative data expected from western societies [Cummins: 1998, Social Indicators Research
43, pp. 307–334; Cummins et al.: 2001, Australian Unity Well-being Index (Australian Centre on Quality of Life, Deakin University,
Melbourne)]. Adolescents’ overall life satisfaction has been shown to correlate consistently with the other well-being related
constructs. However, it clearly decreases with age over the period studied. The results also show that increasing the list
of life domains has a major impact on the structure of the results obtained. When we compare results from parents with those
from their own child, outstanding differences in well-being appear between generations: few domain satisfaction dimensions
show significant correlation between parents and children and more than 20% of the population studied shows high discrepancies
in the answers in four domains. 相似文献
160.
Germà?CoendersEmail author Ferran?Casas Cristina?Figuer Mònica?González 《Social indicators research》2005,73(2):141-177
In this paper, a model is set forth relating (a) overall life satisfaction of children to children’s values and (b) children’s values to parents’ values. Using confirmatory factor analysis models three dimensions of values (materialistic values, capacities and knowledge values and interpersonal relationship values) consistently emerged in 5 countries (Brazil, South Africa, Norway, Spain and India) for both parents and children. There was a considerable amount of missing data, mainly because the parent’s questionnaire was often not returned. Full information maximum likelihood estimators with missing data were thus used.Multiple-group analyses were next performed to assess factor invariance of the three value dimensions across the five countries for both parents and children. This implies testing the equality of factor loadings and intercepts across groups. This equality is required to ensure that factors have the same interpretation in all groups, which is necessary when comparing any aspect of the factor distribution across groups.The only two countries for which the interpretation of value dimensions was invariant for both parents and children were Brazil and Spain. The results of other countries could thus not be compared. Multiple-group structural equation models revealed that both parents and children scored higher on most values in Brazil than in Spain. In both countries, each child value dimension was only significantly predicted by the same value dimension of the parents. R-squares were in the 4–12% range and slightly higher in Brazil. The only value dimension that had some effect on overall life satisfaction was capacities and knowledge, which was so in both countries.Acknowledgements are due to the country project directors and their associates Per Egil Mjaavatn (Norwegian University of Science and Technology, Trondheim, Norway), Usha Nayar (Tata Institute of Social Sciences, India), Irene Rizzini (Pontifícia Universidade Católica do Rio de Janeiro, Brazil), Rose September (Western Cape University, South Africa) and Ferran Casas (Catalan Network of Child Researchers – XCIII – in co-operation with the University of Girona, Spain) for permitting us to use part of their project and to Childwatch International, Oslo, for sponsorship. 相似文献