A semigroup approach to the strong ergodic theorem of the multistate stable population process

In this paper we first formulate the dynamics of multistate stable population processes as a partial differential equation. Next, we rewrite this equation as an abstract differential equation in a Banach space, and solve it by using the theory of strongly continuous semigroups of bounded linear operators. Subsequently, we investigate the asymptotic behavior of this semigroup to show the strong ergodic theorem which states that there exists a stable distribution independent of the initial distribution. Finally, we introduce the dual problem in order to obtain a logical definition for the reproductive value and we discuss its applications.     

‘Walking out’: the mobilities of love

ABSTRACT

In this article, I propose that mobility performs a crucial role in the production and sustenance of intimate relationships and focus, in particular, on courtship practices and their modern-day equivalents. I pursue this discussion through close readings of literary and autobiographical texts from the nineteenth century through to the millennium, and by means of a framework that triangulates the work of Tim Ingold, David Seamon and Henri Bergson. My focus here is on how the mobilities we practice during the everyday routines of courtship – i.e. the paths we make, the routes we take, the roads we travel, the journeys we repeat, the transport we use – come to characterise the relationship concerned and impact upon its progress. Both Ingold’s work on ‘lines’ and Seamon’s on ‘place-ballet’ are conceptually suggestive in this regard and speak to recent work in mobilities/cultural geography on the significance of patterns of movement in the praxis of relationships.     

Teaching Business Demography Using Case Studies

Many faculty members consider using case studies but not all end up using them. We provide a brief review of what cases are intended to do and identify three ways in which they can be used. We then use an example to illustrate how we have used the case study method in teaching business demography. Among other benefits, we note that the case studies method not only encourages the acquisition of skills by students, but can be used to promote “deep structure learning,” an approach naturally accommodates other features associated with the case studies method—the development of critical thinking skills, the use of real world problems, the emphasis of concepts over mechanics, writing and presentation skills, active cooperative learning and the “worthwhileness” of a course. As noted by others, we understand the limitations of the case study method. However, given its strengths, we believe it has a place in the instructional toolbox for courses in business demography. The fact that courses we teach is a testament to our perceived efficacy of this tool.     

The polarizing effect of economic inequality on class identification: Evidence from 44 countries

Using cumulative logit mixed models fitted to World Values Survey data from 44 countries, we explore the impact of economic conditions – both at the individual-level and the national-level – on social class identification. Consistent with previous research, we find a positive relationship between household income and class identification in all countries that we explore, though this relationship varies substantially. Also corroborating previous research, we find that ‘low’ class identifications are more likely in poor countries than in rich ones. However, in contrast to previous research that has neglected the role of inequality, our results indicate that the effect of economic development diminishes if income inequality is considered in the same model. We further demonstrate that income inequality has an important polarizing effect on class identification. Specifically, the relationship between household income and class identity tends to be strongest in countries with a high level of income inequality.     

The road to Q-infinity

For those of us who live in the more industrialized areas of the world—particularly in the United States—it is difficult to appreciate the unique character of the industrial and social evolution in which we are participating... Out of this experience it is not surprising that we have come to regard continual growth and increase as being the normal order of things.An understanding of these processes is essential if we are to appreciate the significance of energy resources in determining what is possible and what is impossible in human affairs.     

The Public Acceptance of Voluntary Childlessness in the Netherlands: from 20 to 90 per cent in 30 years

Within a relatively short period of 30 years, public acceptance of voluntary childlessness has increased enormously in the Netherlands. In this paper, we address two research questions, which we answer with data from 13 waves of the repeated cross-sectional survey Cultural Change in the Netherlands (CCN, 1965–1996). First, we investigate to what extent the increasing permissiveness is due to cohort replacement and to intra-cohort change. We find that between 1965 and 1980 the change is primarily due to intra-cohort (period) effects, whereas cohort replacement has become more important since 1980. Second, we address the question which social categories constitute the 10% of the population who do not accept voluntary childlessness. Church attendance—and not religiosity or religious socialization—turns out to be the most important factor. Low levels of income and education also negatively affect the acceptance of voluntary childless.     

Measuring Capacities for Community Resilience

The purpose of this study was to measure the sets of adaptive capacities for Economic Development and Social Capital in the Norris et al. (2008) community resilience model with publicly accessible population indicators. Our approach involved five steps. First, we conducted a literature review on measurements of the capacities. Second, we created an exhaustive “wish list” of relevant measures that operationalized the concepts presented in the literature. Third, we identified data sources and searched for archival, population-level data that matched our indicators. Fourth, we systematically tested correlations of indicators within and across the theoretical elements and used this information to select a parsimonious group of indicators. Fifth, we combined the indicators into composites of Economic Development and Social Capital and an additive index of Community Resilience using Mississippi county data, and validated these against a well-established index of social vulnerability and aggregated survey data on collective efficacy. We found that our measure of community resilience capacities correlated favorably and as expected when validated with the archival and survey data. This study provides the first step in identifying existing capacities that may predict a community’s ability to “bounce back” from disasters, thereby reducing post-trauma health and mental health problems.     

The Effects of Intrauterine Malnutrition on Birth and Fertility Outcomes: Evidence From the 1974 Bangladesh Famine

This article uses the Bangladesh famine of 1974 as a natural experiment to estimate the impact of intrauterine malnutrition on sex of the child and infant mortality. In addition, we estimate the impact of malnutrition on post-famine pregnancy outcomes. Using the 1996 Matlab Health and Socioeconomic Survey (MHSS), we find that women who were pregnant during the famine were less likely to have male children. Moreover, children who were in utero during the most severe period of the Bangladesh famine were 32 % more likely to die within one month of birth compared with their siblings who were not in utero during the famine. Finally, we estimate the impacts of the famine on subsequent pregnancy outcomes. Controlling for pre-famine fertility, we find that women who were pregnant during the famine experienced a higher number of stillbirths in the post-famine years. This increase appears to be driven by an excess number of male stillbirths.     

Negative and Positive Partial Mobility: A Study of the Relative Changes in Human Development

In this paper, we have considered the issues concerning dynamic changes in HDI and its various components from a relative standpoint. The analysis of HDI mobility should entail directional movement introduced by Fields (in Distribution and development: a new look at the developing world. MIT Press, Cambridge, 2001). However, Fields’ analysis was in the space of absolute values. Here, we will try to extend this exercise to the positional mobility index by considering the question of improvement and deterioration in relative positions. This requires the concept of partial mobility where mobility is judged from the viewpoint of a particular group. We then try to introduce directional changes in partial mobility through axiomatic framework. Finally, we provide an illustrative example from the Indian data.     

Population Composition,Public Policy,and the Genetics of Smoking

In this article, we explore the effect of public policy on the extent to which genes influence smoking desistance. Using a sample of adult twins (n _mz = 363, n _dz = 233) from a large population registry, we estimate Cox proportional hazards models that describe similarity in the timing of smoking desistance among adult twin pairs. We show that identical twin pairs are significantly more likely to quit smoking within a similar time frame compared with fraternal twin pairs. Importantly, we then show that genetic factors for smoking desistance increase in importance following restrictive legislation on smoking behaviors that occurred in the early and mid-1970s. These findings support the social push perspective and make important contributions to the social demography and genetic epidemiology of smoking as well as to the gene-environment interaction literatures.     

Completing the Picture: The Challenges of Bringing “Consumption” into the Population–Environment Equation

The issue of environmentally significant consumption is closely linked to population–environment relationships, but with some exceptions the two literatures have proceeded along separate tracks. We explore three consumption–environment research agendas: household–level consumption; ecological footprints and material flow accounting; and values, attitudes, behaviors and lifestyles. In each of these we note areas of overlap with the population–environment literature, and ways in which the population–environment literature might benefit or borrow from conceptual or methodological approaches in the consumption–environment literature. We also propose ways in which consumption research might be integrated into the largest (in terms of funding) of the population–environment research agendas, land-use and land-cover change research. In the concluding section we present a conceptual framework for understanding the population–environment literature that incorporates production and consumption into the model, and we propose some population–consumption–environment (PCE) research areas to which the population-environment research community could make significant contributions.     

Measuring Knowledge,Attitudes and Behaviours Concerning Sustainable Development among Tenth Grade Students in Manitoba

In this paper we present standardized measures of tenth grade students’ knowledge, attitudes and behaviours concerning sustainable development as those concepts are understood in the United Nations Educational, Scientific and Cultural Organization, and we test the hypothesis that knowledge and favourable attitudes toward SD lead to favourable behaviours. Using a fairly representative random sample of 1,551 tenth grade students from the province of Manitoba, Canada, we crafted 3 indexes. There is a 20-item Index of Knowledge of SD with a good Cronbach alpha = 0.89, a 15-item Index of Attitudes Favourable Toward SD with alpha = 0.84 and a 15-item Index of Behaviours Favourable Toward SD with an alpha = 0.83. About 21% of the variation in our Behaviours Index scores could be accounted for by our Knowledge Index and Attitudes Index scores.     

Economics,ecology and entropy: The second law of thermodynamics and the limits to growth

The second law of thermodynamics has played an important role in ecological economics as providing a justification for the view that economies have limits to growth. Yet beyond basic textbooks statements of this law, we seldom find informed philosophical examinations of the meaning and metaphysical justification for the second law. In this paper we shall examine some challenges which have been made to the limits to growth (Limitationist) position by those criticizing the scope and application of the second law of thermodynamics and we shall in turn defend Limitationism against these criticisms.     

<Emphasis Type="Italic">Knot yet</Emphasis>: minimum marriage age law,marriage delay,and earnings

Despite the historical highs for age at first marriage, little is known about the causal relationship between marriage delay and wages, and more importantly, the mechanisms driving such relationship. We attempt to fill the void. Building on an identification strategy proposed in Dahl (Demography 47:689–718, 2010), we first establish the causal wage effects of marriage delay. We then propose ways to distinguish among competing theories and hypotheses, as well as the channels through which marriage delay affects wages. Specifically, we take advantage of their different implications for causal relationship, across gender and sub-populations. We reach two conclusions. First, we find a positive causal impact of marriage delay on wages, with a larger effect for women. Comparison of IV and OLS estimates suggests that the observed relationship between marriage delay and wages is attributed to both selection in late marriages and true causal effects. Second, we find strong evidence that the positive, causal effects are almost exclusively through increased education for both men and women.     

The Compensating Income Variation of Social Capital

There is a small but growing literature on the determinants of social capital. Most of these studies use a measure of trust to define social capital empirically. In this paper we use three different measures of social capital: the size of the individual’s social network, the extent of their social safety net and membership of unions or associations. A second contribution to the literature is that we analyze what social capital contributes to our well-being. Based on this, we calculate the compensating income variation of social capital. We find differences in social capital when we differentiate according to individual characteristics such as education, age, place of residence, household composition and health. Household income generally has a statistically significant effect. We find a significant effect of social capital on␣life␣satisfaction. Consequently, the compensating income variation of social capital is substantial. Thanks to Tijl Woortman for his research assistance.     

The political mobilities of reporting: tethering,slickness and asylum control

ABSTRACT

This paper focuses on the coerced mobilities associated with reporting, meaning the mandatory requirement to regularly check-in with authorities for the purpose of control. Drawing on recent calls for a politics of mobility and advances in carceral geographies, we attend to the forces, movements, speeds and affective materialities of reporting with a focus on deportable migrants and the UK Home Office. In doing so we develop two conceptual lenses through which to further understand the politics of mobility. First, we develop the concept of ‘slickness’ in the context of the process of becoming detained at a reporting event. We understand slickness as a property of bodies and objects that makes them easier to move. Second, we argue that reporting functions to ‘tether’ deportable migrants; thereby not only fixing them in place, but also forcing the expenditure of energy and the experience of punishment. The result is that reporting blurs the distinction between detention and ‘freedom’ by enacting the carceral in everyday spaces.     

A Sociodemographic Risk Index

In this paper, we conceptualize and develop an index of sociodemographic risk that we hypothesize will be an improvement over the standard poverty measure as a measure of risk for children’s development. The poverty line is widely used in government statistics and in research but is also widely acknowledged to have multiple shortcomings. Using recent data from the National Survey of America’s Families, we develop and examine a Sociodemographic Risk Index for two potential purposes: (a) to serve as a summary indicator of children’s environments that affect their well-being, and (b) to serve as a variable that can be used to identify at-risk subgroups of children whose well-being should be examined separately in indicator reports. Based on substantial research on children’s development, we chose five variables for the index: family income, family structure, parent education, family size, and home ownership. An additive sociodemographic risk index using these variables is strongly associated with multiple measures of child well-being in both bivariate and multivariate analyses. Hence, it serves as a good marker of risk for children and therefore as an indicator that could be monitored over time, across groups, and across places, as well as a variable that could be used to identify subgroups of at-risk children whose well-being should be monitored. However, analyses do not indicate that it performs better at identifying at-risk children than the current poverty measure. Therefore, we recommend the Sociodemographic Risk Index primarily as an additional summary indicator to be monitored, rather than as a replacement for the poverty measure.     

Drivers of Youth Labour Market Integration Across European Regions

Territorial disparities and youth labour markets have been often considered as separated themes, due to challenges in data availability. Comparative regional or sub-regional research on youth labour market integration (YLMI) have been therefore scarce. In this article, we address this gap by presenting a composite measure of YLMI that covers a wide range of indicators and sheds light on the EU territorial divide of young peoples’ opportunities at regional level. In order to build the YLMI index, we use benefit-of-the-doubt-weighting, a seminal methodology on composite indicators (CI) that combines sequence with conditional weights based on the range of each sub-indicator. To proof the usefulness of YLMI, we analyze the evolution of regional YLMI in the EU before and after the economic crisis; and the trends of homogenization or differentiation across EU territories. Furthermore, we investigate to what extent employment conditions, skills supply and technological resources explain cross-regional variations in YLMI.

     

Optimal life-cycle fertility in a Barro-Becker economy

Parenthood postponement is a key demographic trend of the last three decades. In order to rationalize that stylized fact, we extend the canonical model by Barro and Becker (Econometrica 57:481–501, 1989) to include two—instead of one—reproduction periods. We examine how the cost structure of early and late children in terms of time and goods affects the optimal fertility timing. Then, we identify conditions that guarantee the existence and uniqueness of a stationary equilibrium with a stationary cohort size. Finally, we examine how the model can rationalize the observed postponement of births, and we highlight two plausible causes: (1) a general rise in the cost of children in terms of goods and (2) a decline in the degree of family altruism.     

Multiple Dimensions of Attitudes About Homosexuality: Development of a Multifaceted Scale Measuring Attitudes Toward Homosexuality

Attitudes toward homosexuality are complex. To get a comprehensive view on the attitudes of people, different dimensions need to be included in research. Based on a review of the literature, we distinguish five dimensions: acceptance of homosexuality in a general sense; attitude toward equal rights; reactions to homosexuality “at close quarters”; reactions to homosexuality in public; and so-called modern homonegativity. In a study on a representative sample of Dutch Defence personnel (N = 1,607) we tested this model. Structural equation modeling of several items measuring the attitude toward homosexuality offers a six factor solution. These six factors are more or less comparable to the five dimensions we distinguished. The dimension “reactions to homosexuality at close quarters” is, however, empirically split in a dimension on affective reactions to homosexuality and homosexual persons in general and a dimension on affective reaction to homosexual friends or acquaintances.