MOMENT ESTIMATION IN THE CLASS OF BISEXUAL BRANCHING PROCESSES WITH POPULATION–SIZE DEPENDENT MATING

This paper concerns the estimation of the offspring mean vector, the covariance matrix and the growth rate in the class of bisexual branching processes with population‐size dependent mating. For the proposed estimators, some unconditional moments and some conditioned to non‐extinction are determined and asymptotic properties are established. Confidence intervals are obtained and, as illustration, a simulation example is given.     

The Risk of Partner Violence Among Low‐Income Hispanic Subgroups

Women with few social resources are at elevated risk of partner abuse. Certain evidence suggests that African American and Hispanic women, who are overrepresented in the lower socioeconomic strata, are at particularly high risk. We compare women's risk of partner violence, defined as moderate and severe, among 2,400 low‐income African American, Hispanic, and non‐Hispanic Whites from “Welfare, Children and Families: A Three City Study” and find that these groups differ in their risk of degrees of violence. Specific nation‐of‐origin Hispanic subgroups also manifest important differences in their violence risk profiles. We argue that a better understanding of victimization requires more detailed ethnic categorization and a more refined understanding of the meaning of domestic violence for different groups.     

On the Robustness of Bayesian Modelling of Location and Scale Structures Using Heavy-Tailed Distributions

For solving conflicting information between data and prior distributions, Bayesian modelling with heavy-tailed distributions is applied. Exploiting properties of regularly varying functions and distribution functions as well as their relationship with the finiteness of the moments, we establish results for both location and shape parameter structures. And, as a side result, rates of convergence are derived.     

Hispanics in Higher Education and the Texas Top 10% Law

This paper examines the consequences of changes in Hispanic college enrollment after affirmative action was banned and replaced by an admission guarantee for students who graduate in the top 10% of their high school class. We use administrative data on applicants, admittees, and enrollees from the two most selective public institutions and Texas Education Agency data about high schools to evaluate whether and how application, admission, and enrollment rates changed under the three admission regimes. Despite popular claims that the top 10% law has restored diversity to Texas’s public flagships, our analyses that account for secular changes in the size of graduation cohorts show that Hispanics are more disadvantaged relative to whites under the top 10% admission regime at both University of Texas at Austin and Texas A&M University. Simulations of Hispanics’ gains and losses at each stage of the college pipeline reveal that affirmative action is the most efficient policy to diversify college campuses, even in highly segregated states like Texas.     

Gender, widowhood, and long-term care in the older Mexican American population

The objective of this study is to examine the influences of gender on long-term care service use among older Mexican American widows and widowers. Our analysis is based on a sample of 773 widows and 183 widowers from the Longitudinal Study of Elderly Mexican American Health (H-EPESE). In this sample widows resemble widowers in terms of demographic and health characteristics. However, widows report more financial strain than widowers and a greater welfare dependency (SSI) and Medicaid use. Among those who suffered diminished health, widows were more likely than widowers to use community-based long-term care services whereas widowers were more likely to enter a nursing home. Widows also had more instrumental and socioemotional support than widowers. Serious cognitive and functional impairment, though, places widows and widowers at the same risk of institutionalization. We end with a discussion of the policy implications of these findings.     

Extending an order to the power set: The Leximax Criterion

This work analyzes the issue of ranking the levels of well-being enjoyed by an agent when dealing with her opportunity set in a freedom of choice context. We try to propose a natural extension of a preference relation over a (possibly) infinite set X to its power set, compatible with the finite Leximax criterion. This research has been supported by Comisión Interministerial de Ciencia y Tecnología, SEC2000-0838 (Ballester), and Dirección General de Enseñanza Superior e Investigación Científica, PB98-0551 (De Miguel).     

Financial strain and health among elderly Mexican-origin individuals

In this paper we examine the associations among perceived financial strain and various health measures--including self-rated health, self-reported functional capacity, performance-based mobility, and mortality--in a sample of older Mexican-origin individuals. We employ the Hispanic Established Population for Epidemiological Studies of the Elderly, an eight-year longitudinal survey of over 3,000 Mexican-origin individuals in five southwestern states who were initially interviewed in 1993 and 1994. Although financial strain is associated with actual income and poverty, it is also associated with cognitive capacity, depression, and self-esteem, and while it is strongly associated with subjective measures, it has a weaker association with more objective measures, such as performance-based mobility and mortality. Financial strain appears to be part of a package of cognitions and emotions indicative of low morale or demoralization that has adverse effects on subjective health.     

A step-by-step algorithm for combining diagnostic tests

Combining data of several tests or markers for the classification of patients according to their health status for assigning better treatments is a major issue in the study of diseases such as cancer. In order to tackle this problem, several approaches have been proposed in the literature. In this paper, a step-by-step algorithm for estimating the parameters of a linear classifier that combines several measures is considered. The optimization criterion is to maximize the area under the receiver operating characteristic curve. The algorithm is applied to different simulated data sets and its performance is evaluated. Finally, the method is illustrated with a prostate cancer staging database.     

Speak! Paradoxical Effects of a Managerial Culture of ‘Speaking Up’

We explore the intrinsic ambiguity of speaking up in a multinational healthcare subsidiary. A culture change initiative, emphasizing learning and agility through encouraging employees to speak up, gave rise to paradoxical effects. Some employees interpreted a managerial tool for improving effectiveness as an invitation to raise challenging points of difference rather than as something ‘beneficial for the organization’. We show that the process of introducing a culture that aims to encourage employees to speak up can produce tensions and contradictions that make various types of organizational paradoxes salient. Telling people to ‘speak up!’ may render paradoxical tensions salient and even foster a sense of low PsySafe.     

‘‘Entrepreneurial Ecosystems and the Diffusion of Startups” by (Eds.) Alvarez,S., Carayannis,E.G., Dagnino,G. B., & Faraci,R. (Edward Elgar Publishing, 2018)

Journal of Management and Governance -