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11.
Bovas Abraham 《商业与经济统计学杂志》2013,31(4):356-361
A simple modification is suggested for the construction of transfer function models relating an output variable Yt to an input variable Xt when the model for Xt contains operators that cancel out. In addition, the evaluation of transfer function models is discussed by comparing the forecasts with the actual observations. 相似文献
12.
13.
The authors consider dimensionality reduction methods used for prediction, such as reduced rank regression, principal component regression and partial least squares. They show how it is possible to obtain intermediate solutions by estimating simultaneously the latent variables for the predictors and for the responses. They obtain a continuum of solutions that goes from reduced rank regression to principal component regression via maximum likelihood and least squares estimation. Different solutions are compared using simulated and real data. 相似文献
14.
Catherine H. Stein Erica Hoffmann Erin E. Bonar Jaclyn E. Leith Kristen M. Abraham Alexis C. Hamill Shane W. Kraus Shinakee Gumber Wendy R. Fogo 《Journal of Family and Economic Issues》2013,34(2):200-210
Using a sample of 222 young adults attending college, the present study examined the relative contribution of young adults’ perceived economic pressures, financial coping and religious meaning-making coping strategies in accounting for variation in their reports of psychological well-being within the context of the United States economic crisis. Results suggest a direct relationship between perceived economic pressure and psychological well-being such that young adults who reported having to make more economic adjustments as a result of economic crisis also reported higher levels of depressed mood and anxiety. Young men and women who reported having to make fewer economic adjustments and being able to meet their material needs reported higher levels of life satisfaction. Regardless of young adults’ self-reported level of economic pressures, the use of education and communication financial coping strategies was related to lower levels of self-reported anxiety and depressed mood and greater life satisfaction. Viewing the financial crisis as a punishment from God was generally associated with young adults’ reports of greater depressed mood and less life satisfaction. Implication of findings for research and practice are discussed. 相似文献
15.
There are many time series applications where an experimenter observes the simultaneous responses of several subsystems over time. In these instances one is often not interested in the parameters of individual subsystems, but rather in an overall characterization of the system in question. Under the assumption that subsystems are independent and first order autoregressive, the present paper presents two methods for estimating the distribution of the subsystem coefficients. 相似文献
16.
i
, i = 1, 2, ..., k be k independent exponential populations with different unknown location parameters θ
i
, i = 1, 2, ..., k and common known scale parameter σ. Let Y
i
denote the smallest observation based on a random sample of size n from the i-th population. Suppose a subset of the given k population is selected using the subset selection procedure according to which the population π
i
is selected iff Y
i
≥Y
(1)−d, where Y
(1) is the largest of the Y
i
's and d is some suitable constant. The estimation of the location parameters associated with the selected populations is considered
for the squared error loss. It is observed that the natural estimator dominates the unbiased estimator. It is also shown that
the natural estimator itself is inadmissible and a class of improved estimators that dominate the natural estimator is obtained.
The improved estimators are consistent and their risks are shown to be O(kn
−2). As a special case, we obtain the coresponding results for the estimation of θ(1), the parameter associated with Y
(1).
Received: January 6, 1998; revised version: July 11, 2000 相似文献
17.
Clark J. Hudak Jr. M.S.W. Raju Varghese Ed.D. Robert M. Politzer M.S. Sc.D. 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》1989,5(3):201-210
This paper describes the efforts of a private gambling treatment program to conduct a retrospective study of pathological gamblers treated in a publicly supported residential program. The Johns Hopkins Center for Pathological Gambling treated approximately 100 pathological gamblers nationwide from 1979 to 1983 in its residential component. Twenty-six gamblers were assessed regarding their recovery status with specific focus on family, marital status and occupational satisfaction. It was hypothesized that the more satisfied patients would display lower frequencies of gambling and that gambling frequency was dependent upon the level of satisfaction. Thirty-one percent of these gamblers reported abstinence. Regression analyses indicated that the recovery of pathological gamblers as measured by frequency of gambling is significantly influenced by job satisfaction, and moderately influenced by marital status and family life satisfaction. Consequently, these factors should be addressed by mental health professionals in research and treatment of pathological gambling. 相似文献
18.
In the present paper, we introduce and study Renyi's information measure (entropy) for residual lifetime distributions. It
is shown that the proposed measure uniquely determines the distribution. We present characterizations for some lifetime models.
Further, we define two new classes of life distributions based on this measure. Various properties of these classes are also
given. 相似文献
19.
Katharine G. Abraham 《Allgemeines Statistisches Archiv》2005,89(2):121-139
Summary: The paper illustrates the value of broad researcher access to survey and administrative microdata using examples drawn from
the U. S. experience, outlining how analyses of trends in earnings inequality, poverty and employment dynamics using such
data have benefited policy makers and contributed to improvements in statistical agency data products. Methods of facilitating
researcher access, including the release of public use files, the use of licensing agreements, and the establishment of research
data centers, are discussed.
* The author thanks Anne Polivka, Marilyn Seastrom and two anonymous referees for helpful comments on an earlier draft of
the paper. 相似文献
20.
Who participates,who does not,and why? An analysis of voluntary neighborhood organizations in the United States and Israel 总被引:1,自引:0,他引:1
Lack of participation in voluntary associations and the associated issues of why people do or do not participate are major areas of interest in the research literature concerning citizen participation. The present study used three types of variables (demographic, social psychological, and costs/benefits) to investigate the characteristics of participants and nonparticipants in neighborhood-type organizations in the United States and Israel. Findings from analysis of the demographic variables show some cross-cultural similarities (including a surprising lack of race/ethnic and education differences between participants and nonparticipants). There were striking cross-cultural similarities using the social psychological variables. The data from the Israel sample provide important information on the costs and benefits of participation. A discriminant analysis points to the predictive strength of social psychological and cost/benefit variables in comparison to demographic variables. Implications of these results for explanatory and predictive purposes are discussed. 相似文献