失业保险金给付博弈分析及其优化设计

我国现行失业保险制度运行中存在失业保险金的给付两难,给付双方是一种博弈关系。通过构建政府与失业人员的失业保险金给付静态博弈和完全而不完美信息动态博弈并进行解析,需要从缩短失业保险金的给付期限、充分发挥失业保险金的促进就业功能等方面对现行失业保险制度进行优化设计。     

Structural reforms and labor markets in Argentina

Argentina is considered to be one of the most successful cases of structural reforms in Latin America, because of the extent and rapid pace of the reforms after the hyperinflationary process of 1989–1990. At the beginning of 1991, the convertible plan was launched and inflation fell sharply. However, even when the economy is growing fast, the problems in the labor market seem to worsen. Unemployment and underemployment have risen, and an increasing number of people have fallen out of normal work. The article analyzes how changes in labor markets are closely related to the transformation process in the economic system. After a summary of the situation before the crisis of the 1980s, the article analyzes the stabilization plans applied and then discusses the current dynamics of labor markets and the policies implemented to change labor regulations. Finally, some hypotheses about future scenarios are presented.     

AGING,RETIREMENT AND SOCIAL SECURITY IN A MODEL OF INTEREST GROUPS

The assessment of the degree of genetic variation in a natural population, and the nature of that variation, is of central importance in both theoretical and applied population studies. Two “variance” results in population genetics theory are presented. For the first, expressions are found for the expected difference in the estimates of genetic variation in a population obtained by two investigators sampling from the same population in the same generation. The second result concerns the question of whether the degree of genetic variation in a population is best estimated by using the number of alleles observed in a sample of genes or by the number of polymorphic sites observed in the sample. For some combinations of the actual degree of variation and the sample size the former is preferred while for other combinations the latter is preferred. The reason for this is discussed.     

Quod vadis? The effect of youth unemployment and demographic pressure on migration in the MENA region

Recent trends in international migration reveal increasing migration outflows from Middle Eastern and North African (MENA) countries. This development is accompanied by a massive rise in youth unemployment and a major increase in the young population in this region. This paper provides a quantitative assessment of migration patterns and analyses the interacting effect of the unfavourable combination of youth unemployment and demographic pressure on migration decisions. Based on an assessment of bilateral migration flows from 19 MENA to 34 OECD countries between 1995 and 2020, we find that youth unemployment plays a significant role in explaining emigration flows from MENA countries. We also find that the migration-generating effect of youth unemployment is contingent upon demographic pressure in the youth cohorts and increases with an increasing number of youths.     

Information fraction estimation: Strategies for a phase 3 non-inferiority maximum duration design with time to event outcome

There is considerable debate surrounding the choice of methods to estimate information fraction for futility monitoring in a randomized non-inferiority maximum duration trial. This question was motivated by a pediatric oncology study that aimed to establish non-inferiority for two primary outcomes. While non-inferiority was determined for one outcome, the futility monitoring of the other outcome failed to stop the trial early, despite accumulating evidence of inferiority. For a one-sided trial design for which the intervention is inferior to the standard therapy, futility monitoring should provide the opportunity to terminate the trial early. Our research focuses on the Total Control Only (TCO) method, which is defined as a ratio of observed events to total events exclusively within the standard treatment regimen. We investigate its properties in stopping a trial early in favor of inferiority. Simulation results comparing the TCO method with alternative methods, one based on the assumption of an inferior treatment effect (TH0), and the other based on a specified hypothesis of a non-inferior treatment effect (THA), were provided under various pediatric oncology trial design settings. The TCO method is the only method that provides unbiased information fraction estimates regardless of the hypothesis assumptions and exhibits a good power and a comparable type I error rate at each interim analysis compared to other methods. Although none of the methods is uniformly superior on all criteria, the TCO method possesses favorable characteristics, making it a compelling choice for estimating the information fraction when the aim is to reduce cancer treatment-related adverse outcomes.     

Unemployment and mental health: evidence from research in the Nordic countries

In this article we examine research on effects of unemployment on mental health in Denmark, Finland, Norway and Sweden. We describe studies that use cross-sectional, longitudinal and time-series data, and we discuss studies that investigated the duration-dependence issue in exit rates out of unemployment. Not surprisingly, cross-sectional studies reveal that unemployed persons have worse mental health than do others. Most longitudinal studies suggest that unemployment is associated with deteriorating mental health, even though it is somewhat unclear how long such an effect persists. Most duration-dependence studies were done using Swedish data. It turns out that unemployment benefits and labour-market policies affect the pattern of exit rates out of unemployment.     

The policies of unemployment protection in Europe

The abundant literature on welfare state policies, regimes or ‘worlds’ has been only limitedly interested in unemployment protection, and even less in youth unemployment protection. What is clearly lacking in the literature is an updated analysis of the most recent policies developed in European countries targeting youth. This mini‐symposium aims to fill in this gap by presenting findings from an EU‐funded research project entitled ‘Youth, Unemployment and Exclusion in Europe: A Multidimensional Approach to Understanding the Conditions and Prospects for Social and Political Integration of Young Unemployed’ (YOUNEX). The main aim of the research endeavour was to develop theory and contribute to empirical knowledge concerning the social and political exclusion of unemployed youth in Europe.     

The Great Recession of 2007: An Agenda for Social Justice

The Great Recession, the most severe economic crisis since the Great Depression, officially began in December 2007 with an 8 trillion dollar housing bubble and lasted until June 2009, resulting in loss in consumer spending and collapse in the nation’s business investment. For American workers, the Great Recession had far-reaching implications: unemployment, underemployment, pay cuts, and cutbacks in household spending. Although social work has a historical commitment to address the vulnerabilities of people and communities, we argue that the profession neglected to understand fully the factors associated with the Great Recession and to mount an agenda for justice in response to its worker-related impact.     

Effects of testosterone replacement therapy withdrawal and re-treatment in hypogonadal elderly men upon obesity,voiding function and prostate safety parameters

Whether testosterone replacement therapy (TRT) is a lifelong treatment for men with hypogonadism remains unknown. We investigated long-term TRT and TRT withdrawal on obesity and prostate-related parameters. Two hundred and sixty-two hypogonadal patients (mean age 59.5) received testosterone undecanoate in 12-week intervals for a maximum of 11 years. One hundred and forty-seven men had TRT interrupted for a mean of 16.9 months and resumed thereafter (Group A). The remaining 115 patients were treated continuously (Group B). Prostate volume, prostate-specific antigen (PSA), residual voiding volume, bladder wall thickness, C-reactive protein (CRP), aging male symptoms (AMS), International Index of erectile function – erectile function (IIEF-EF) and International Prostate Symptoms Scores (IPSS) were measured over the study period with anthropometric parameters of obesity, including weight, body mass index (BMI) and waist circumference. Prior to interruption, TRT resulted in improvements in residual voiding volume, bladder wall thickness, CRP, AMS, IIEF-EF, IPSS and obesity parameters while PSA and prostate volume increased. TRT interruption reduced total testosterone to hypogonadal levels in Group A and resulted in worsening of obesity parameters, AMS, IPSS, residual voiding volume and bladder wall thickness, IIEF-EF and PSA while CRP and prostate volume were unchanged until treatment resumed whereby these effects were reversed. TRT interruption results in worsening of symptoms. Hypogonadism may require lifelong TRT.     

Unemployment and Fatherhood: Gender,Culture and National Context

Hegemonic representations of masculinity and dominant images of fatherhood have usually been linked to the domain of work. This article explores the experiences of men under the hardship of unemployment and the impact of these experiences on the construction of their gender identities, specifically on the construction of their fatherhood identity. In addition, the article examines how culture and national context affect the interrelationship between unemployment and fatherhood. Drawing on a post‐structural constructivist theoretical perspective, the article describes a qualitative study of low‐income unemployed Palestinian fathers in Israel. The study examines three areas of interest: perceptions of fatherhood, the experience of unemployment and the impact of unemployment on the construction of fatherhood. On the theoretical level, the article proposes a conceptualization of the relationship between unemployment and fatherhood. It argues that in order to generalize the impact of unemployment on fatherhood, we must first examine the context in which gendered and cultural perceptions of fatherhood are embedded. On a policy level, the article offers some recommendations for developing more contextualized, gender‐ and cultural‐sensitive policies for unemployed fathers.