Estimation of parameter of Morgenstern type bivariate exponential distribution using concomitants of order statistics

In this paper we have considered concomitants of order statistics arising from Morgenstern type bivariate exponential distribution and their applications in estimating the unknown parameter involved in the distribution. We have obtained the best linear unbiased estimator of a parameter involved in Morgenstern type bivariate exponential distribution using both complete and censored samples.     

Member participation in union activities: Perceptions of union priorities,performance, and satisfaction

Data obtained from union respondents of a survey using a national probability sample that is representative of the U.S. labor force revealed that members’ perceptions of their unions’ effectiveness in obtaining both extrinsic and intrinsic benefits and the unions’ responsiveness to membership were significantly related to member participation in union activities. Union satisfaction was inversely related to participation. Perceptions of union power and service and demographic variables, such as age and education, were found to have less significant linkages with member participation.     

Estimation of a Parameter of Bivariate Pareto Distribution by Ranked Set Sampling

Ranked set sampling is applicable whenever ranking of a set of sampling units can be done easily by a judgement method or based on the measurement of an auxiliary variable on the units selected. In this work, we derive different estimators of a parameter associated with the distribution of the study variate Y, based on a ranked-set sample obtained by using an auxiliary variable X correlated with Y for ranking the sample units, when (X, Y) follows a bivariate Pareto distribution. Efficiency comparisons among these estimators are also made. Real-life data have been used to illustrate the application of the results obtained.     

An International Examination of the Effectiveness of Functional Family Therapy (FFT) in a Danish Community Sample

Youth behavior problems have increased in prevalence in Scandinavian countries. Functional Family Therapy (FFT) has been shown to be an effective intervention across diverse populations and international contexts. The current study examines the effectiveness of FFT within a Danish-community sample in a pre-post comparison design and includes 687 families. Observed outcomes included both parent- and/or youth- reported domains of youth behavior, family dysfunction, school attendance and performance, and substance use. Significant improvements were found in youth behavior, family functioning, and school-related outcomes (e.g., like of school and truancy) despite experiencing a 60% attrition rate in our sample postintervention. This study provides evidence for the effectiveness of FFT on a wide scale in a Scandinavian context, adding to previous research that supports the transportability of this intervention.     

Perceptions of union power,service, and confidence in labor leaders: A study of member and nonmember differences

Attitudes toward specific aspects of unionization held by the subjects of large national samples of the U.S. work force (the1977 Quality of Employment Survey) and the general population (the1972–1978 General Social Surveys) are examined in two separate analyses. Comparisons of the attitudes held by union members and nonmembers are made on specific dimensions of union power and service and confidence in union leaders. Nonmembers are found to have stronger perceptions that unions are influential in running the country and that unions are stronger than employers. Conversely, union members have stronger perceptions that unions offer protection, job security, improve wages and conditions of work, are worth their dues, and have greater confidence in union leaders. Discriminant analysis of data over a five-year period also revealed that union members have a stable higher confidence level in union leaders than nonmembers. Explanations for such union member and nonmember differences are hypothesized. The authors wish to acknowledge the assistance of Brent Schooley. An earlier version of this paper was presented at the Western Academy of Management meetings at Monterey, California, 1981.     

Concomitants of k-record values arising from Morgenstern family of distributions and their applications in parameter estimation

In this paper, we have obtained the marginal and joint distributions of concomitants of k-record values for the Morgenstern family of distributions (MFD) and hence obtained the moments and product moments of concomitants of k-record values. Applying this results we have derived the best linear unbiased estimators of some parameters involved in Morgenstern type bivariate logistic distribution which belongs to MFD based on concomitants of k-record values.     

ON THE ESTIMATION OF TOTAL WEIGHT IN CHEMICAL BALANCE WEXGHING DESIGNS1

This paper is concerned with the problem of estimation of total weight in a chemical balance weighing design. Some results regarding the estimability of the total weight are obtained and a lower bound for the variance of the estimated total weight is given. Finally, a series of weighing designs estimating the total weight in an ‘optimum’ manner is reported.     

A Collaboratively Designed Child Mental Health Service Model: Multiple Family Groups for Urban Children with Conduct Difficulties

This paper presents preliminary outcomes associated with an experimental, longitudinal study of a Multiple Family Group (MFG) service delivery approach set within thirteen urban outpatient clinics serving children and their families living in inner-city, primarily African American and Latino communities. Specifically, this paper focuses on parent reports of child oppositional behavior and parenting stress over time. MFG is a flexible, protocol-driven approach designed to address the most common reason for referral to outpatient child mental health clinics, childhood behavioral difficulties. The MFG also aims to enhance family-level engagement and retention in ongoing care. Further, the service delivery model was collaboratively developed with intensive input from parents rearing children with conduct difficulties, parent advocates, community-based child mental health providers and services research staff in order to ultimately expand the number of effective service models that can be situated within "real world," urban child mental health settings.