Experience with a multi-year fleet planning model

The fleet planning problem requires determination of the changing airline fleet mix based on existing traffic levels and projected growth, on the existing fleet, various aircraft types available in the future, and other operational and financial considerations. Several applicable mathematical formulations have been reported. One of these has been programmed for the computer and used by the authors for several years. This paper discusses the application of that model to real airline planning situations. Such practical experience has effected changes in the program and the manner it is used in fleet planning studies.     

Family Factors,Theft, Vandalism,and Major Deviance Among a Multiracial/Multiethnic Sample of Adolescent Girls

This article reports on a study of 503 African-American, Hispanic, and White non-Hispanic adolescent girls attending public schools in Miami, Florida. The primary objectives of the study were to determine the prevalence of 13 self-reported delinquent behaviors in the sample, to compare these rates among the three groups of students, and to explore the predictive influences of several family factors that correlate with delinquency. It was found that 37.5% of the sample engaged in one or more acts of serious delinquency, with African-Americans reporting they had engaged in significantly more of these behaviors. The best predictors of theft/vandalism were low family pride and family substance abuse for Hispanics, low family communication for African-Americans, and low family pride for White non-Hispanics. The findings indicate that traditional family factors that have been used repeatedly to understand delinquency by male adolescents were not strong predictors of delinquency among the adolescent girls in the sample.     

The Accommodation of Conflict in the Merger of Two Religious Denominations

Abstract

This paper examines the effect of migration on the occupational prestige and mobility of about 4000 U.S. men aged 35–64 in 1951. The analysis is based on data from the 1951 Six City Survey of Labor Mobility. The findings show that migrants are superior to non-migrants, with few exceptions, in mean socio-economic statuses. Migrant superiority was due to initial advantages for men 35–44 only. Men over 45 who migrated lost part of their initial advantage relative to non-migrants. The regression slopes describing the relationship among son's education, father's prestige level, and son's 1949 occupational prestige did not differ between migrants and non-migrants. A fairly consistent interaction with age appeared in the data—migrants 45 years and older suffered set-backs in their careers compared to younger migrants.     

Family Factors, Theft, Vandalism, and Major Deviance Among a Multiracial/Multiethnic Sample of Adolescent Girls

This article reports on a study of 503 African-American, Hispanic, and White non-Hispanic adolescent girls attending public schools in Miami, Florida, The primary objectives of the study were to determine the prevalence of 13 self-reported delinquent behaviors in the sample, to compare these rates among the three groups of students, and to explore the predictive influences of several family factors that correlate with delinquency. It was found that 37.5% of the sample engaged in one or more acts of serious delinquency, with African-Americans reporting they had engaged in significantly more of these behaviors. The best predictors of theft/vandalism were low family pride and family substance abuse for Hispanics, low family communication for African-Americans, and low family pride for White non-Hispanics. The findings indicate that traditional family factors that have been used repeatedly to understand delinquency by male adolescents were not strong predictors of delinquency among the adolescent girls in the sample.     

A critique of social indicators analysis and key informants surveys as needs assessment methods

This paper reports data from a pilot study designed to determine the practicality and utility of two differing needs assessment methodologies: social indicators analysis and key informants surveys. The authors found social indicators analysis successfully identified differential areas of need within the SMSA which served as the research site. They suggest it is a practical and valid means for assessing human service needs at a general level. The key informants survey was judged to be less useful. Informants generally were unable to identify the extent of differing types of needs or their geographic distribution. It is suggested additional research utilizing differing designs must be completed before meaningful conclusions can be reached about the utility of the key informants survey as a needs assessment method.     

Race, socioeconomic status, and psychological distress: an examination of differential vulnerability

Using data from a 1985 epidemiological survey of 2,115 adults in Florida, this research has two goals: it tests the proposition that race and SES jointly influence mental health, and it examines the contribution of undesirable life events and economic problems to psychological distress across SES groups. Using multiple indicators of SES and mental health, we found that the evidence for a model of joint influence of race and SES on mental health varied with the measures being used. The most general conclusion is that SES interacts with race to increase psychological symptoms of distress. Partitioning the sample into three SES categories (low, middle, high), we examined the contribution of stressors to the greater distress among lower-SES blacks compared to other blacks and lower-SES whites. Lower-SES blacks are more vulnerable than lower-SES whites to the impact of undesirable events, but they are less vulnerable than lower-SES whites to the impact of economic problems. Lower-SES blacks are more vulnerable than middle-SES blacks to the impact of both discrete events and economic problems. Limitations of the study indicate a need for future longitudinal studies with measures of coping resources and support networks to further our understanding of the race, social class and psychological distress relationship.