A migration model of pleasure travel

Pleasure travel has become an institutionalized feature of the social life of modern industrial societies, involving large numbers of people and a great number and variety of human organizations. Pleasure travel may be seen as a special type of migration; therefore, Everett Lee's theory of migration was used as a guideline to review the literature and as a heuristic device to construct a demographic theory of pleasure travel. The result of this effort was an inventory of propositions that summarized the conclusions of that literature. These propositions suggest that the volume of pleasure travel from place to place is related to the areal differentiation, the demographic differentiation, and the economic development of those places, as well as the relative difficulty of the intervening obstacles separating them. The propositions also suggest that streams of pleasure travel tend to follow predictable paths and that travelers are selected by various socioeconomic and demographic characteristics.     

Psychosocial Problems Associated With Homelessness in Sexual Minority Youths

Sexual minorities are overrepresented among homeless youths, and this is often related to reactions to their status as sexual minorities. While on the streets, they are at increased risk for victimization, substance and alcohol use, sexual risk behaviors, and mental health issues compared to homeless heterosexual youths. This article uses ecological systems theory to examine psychosocial problems associated with homelessness among sexual minority youths and reviews empirical literature examining outcomes related to homeless sexual minority youths including mental health, substance use, and sexual risk behavior. Implications for social work are discussed including practice, policy, and suggestions for future studies.     

Continuity of utility functions representing fuzzy preferences

In a previous paper, we established necessary and sufficient conditions for a given binary fuzzy relation to be representable by a utility function. In this article, we construct a crisp order topology associated to a given weakly complete fuzzy pre-order and introduce the notion of “continuous fuzzy pre-order.” We show that this new condition and the conditions introduced in the previous paper are together necessary and sufficient for a numerical representation of a given weakly complete fuzzy pre-order by a continuous utility function.     

The Evolution of Housing Typologies for Older Adults in The Netherlands From 1945 to 2016: An Analysis in the Context of Policy,Societal, and Technological Developments

This study aims to examine housing typologies for older adults in the light of three qualitatively examined exogenous factors: policy, societal developments, and technology. The developments in inpatient and assisted ambulatory housing facilities for older adults have been mapped from 1945 to 2016 using quantitative data. Using these data, five transition periods can be distinguished. Within the first transition periods, policy factors were tremendously important, while within the later ones, societal influence empowered by technological change became the primarily driving factor. This research shows that the classification of inpatient, assisted ambulatory housing, and outpatient housing may no longer be applicable in its current form.     

THE EURO AND THE GEOGRAPHY OF INTERNATIONAL DEBT FLOWS

Greater financial integration between core and peripheral European Monetary Union (EMU) members not only had an effect on both sets of countries but also spilled over beyond the euro area. Lower interest rates allowed peripheral countries to run bigger deficits, which inflated their economies by allowing credit booms. Core EMU countries took on extra foreign leverage to expose themselves to the peripherals. We present a stylized model that illustrates possible mechanisms for these developments. We then analyze the geography of international debt flows using multiple data sources and provide evidence that after the euro's introduction, core EMU countries increased their borrowing from outside of the EMU and their lending to the EMU periphery. Moreover, we present evidence that large core EMU banks' lending to periphery borrowers was linked to their borrowing from outside of the euro area.     

The Evolution of Organizations: Suggestions from Complexity Theory About the Interplay Between Natural Selection and Adaptation

There has been much debate in the managementliterature between neo-Darwinists (who believe in thenatural selection of populations of organizations) andadaptationists (who contend that changes in organization structure and behavior occur in response to theenvironment). The general thesis of neo-Darwinism isthat species are blindly selected for survival by theenvironment. The latest empirical support for the dominant neo-Darwinism perspective adopted bymost biologists is based primarily on the experimentsconducted by Salvador Luria who claims to haveconclusively demonstrated that genes mutate randomly.Recently, however, biologists have re-examined Luria sresearch methods and, after replications of hisexperiments, now question some aspects of the validityof his results. Moreover, there is now new researchwhich provides support for the earlier adaptationistposition, namely, the existence of evolutionary driversand directors existing within self-organizing systems.Of particular importance to the present study is the experimental indication thatself-organizing systems play a conscious role in theirown evolution. We propose that similar mechanisms orprocesses operate in organizational adaptation, thuspointing toward a theoretical modification ofneo-Darwinism that embraces both adaptation and naturalselection in a general, unified theory.     

The Second Generation in Belgium

A growing proportion of second‐generation Moroccan and Turkish youngsters in Belgium are moving on to higher secondary education and beyond. This trend is greater among Moroccan youngsters than among their Turkish peers. Turkish girls in particular are still married off at a young age, which inevitably affects their educational opportunities. Despite higher participation rates for youngsters from immigrant backgrounds, the educational gap with Belgian pupils and students remains wide. This is largely attributable to differences in socioeconomic background. It appears that the concentration of second‐generation immigrant pupils in certain schools is also a major explanatory factor. Despite their increased participation in education, second‐generation immigrants are still not well represented in the labor market and they are, moreover, employed mostly in less favorable segments of that market. An interesting development among second‐generation immigrants is the polarization that is taking place in relation to the significance of Islam. A growing number of second‐generation youngsters are opting for a more secular way of life, while an increasingly large group is choosing Islamist ideologies or at least a more conscious form of Islam. For young people of the second generation, who often have little to hold on to socially, Islamism can provide a transparent, supportive, and all‐embracing frame of reference.