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1.
MuchhasbeensaidofChina'spopulationproblem.Currelltly,thenationhas1.25billiollpeople,themostpopulouscountryintheworld.Mostexpertsagreethatintileyearstocome,itspopulationwillcontinuetogrowuntil2050,whenazerogrowthrateispredicted.Bythen,thenation'spopulationwillreachanunprecedelltedlevelfI.6billion.Tilequestionarisesllaturallyfhow1llanypeoplecanChinareallysustain?WillChinabeoverwhelmedsomedaybyover-population?Awidelyheldviewarguesthatatmaximum,ChinacansustainI.6billionpeople.Thisviewwasfirstp…  相似文献   

2.
HowCanChinaFeedItsPopulation?¥//Question(Q):Mr.Guo,areyouconfidentthatChinacanfeeditspopulation?Answer(A):Yes,Chinadefinitely...  相似文献   

3.
Healthy grandparenthood represents the period of overlap during which grandparents and grandchildren can build relationships, and grandparents can make intergenerational transfers to younger kin. The health of grandparents has important implications for upward and downward intergenerational transfers within kinship networks in aging societies. Although the length of grandparenthood is determined by fertility and mortality patterns, the amount of time spent as a healthy grandparent is also affected by morbidity. In this study, we estimate the length of healthy grandparenthood for the first time. Using U.S. and Canadian data, we examine changes in the length of healthy grandparenthood during years when grandparenthood was postponed, health improved, and mortality declined. We also examine variation in healthy grandparenthood by education and race/ethnicity within the United States. Our findings show that the period of healthy grandparenthood is becoming longer because of improvements in health and mortality, which more than offset delays in grandparenthood. Important variation exists within the United States by race/ethnicity and education, which has important implications for family relationships and transfers.  相似文献   

4.
We compute the Gini indexes for income, happiness and various simulated utility levels. Due to decreasing marginal utility of income, happiness inequality should be lower than income inequality. We find that happiness inequality is about half that of income inequality. To compute the utility levels we need to assume values for a key parameter that can be interpreted as a measure of relative risk aversion. If this coefficient is above one, as many economists believe, then a large part of happiness inequality is not related to pecuniary dimensions of life.  相似文献   

5.
This study proposes three mediation pathways to explain how the positive views (perceived control, optimism and self-enhancement) proposed by Cummins and Nistico (Journal of Happiness Studies 3:37–69 2002) maintain life satisfaction. The three pathways were enhancing self-esteem, reducing have-want discrepancy and changing importance perceptions. Two hundred and seventy-two undergraduates from Central Taiwan University of Science and Technology and Nan Kai Institute of Technology voluntarily participated in this study. Questionnaires measuring sense of control, optimism, self-enhancement, self-esteem, have-want discrepancy and importance of life domains, and global life satisfaction were administered to participants in a classroom setting. Correlation and structural equation modeling analyses were conducted to examine the mediation effects of these three pathways. Generally, results of correlation and structural equation modeling analyses were consistent with hypothesized relations among variables and showed that the relationship between positive views and life satisfaction was completely mediated by self-esteem, have-want discrepancy and shifting tendency of importance perception, indicating that the three pathways of enhancing self-esteem, reducing have-want discrepancy and changing importance perceptions had unique effects to explain how positive views maintain life satisfaction.  相似文献   

6.
This article examines the representation of masculinity in Sex and the City through an analysis of the characters Big and Steve. Although the show is unique in that it presents female characters as the primary subjects of identification and presumes a female audience, it participates in the patriarchal project of measuring men, especially Big and Steve, against each other. At first, Big represents classic old-style phallic male character, the hero of both fairy tale and Hollywood romantic comedy. Steve, on the other hand, represents the new man, a flawed hero of modern relationship myths. However, throughout the course of the series, the illnesses of these two characters shift these representations. The series ultimately opens space for new representations of masculinity.  相似文献   

7.
In the comparative turnout literature, there are two ways of measuring voter turnout: (1) voter turnout as the percentage of registered voters that actually turn out (RV turnout) and (2) voter turnout as the percentage of a country’s voting age population that cast their ballot on Election Day (VAP turnout). Both measurements are imprecise, the former overestimates turnout, the latter either underestimates or overestimates turnout. In this article, I introduce a more accurate calculation of macro-level electoral participation into the comparative turnout literature, the percentage of eligible voters or VEP turnout. To do so, I first calculate VEP turnout and add it to a dataset on electoral turnout that covers more than 500 elections conducted in democracies from 1990 to 2012. Second, I use a standard turnout model and highlight that the constituents of turnout somewhat differ across RV turnout, VAP turnout, and VEP turnout.  相似文献   

8.
How much does income matter in neighborhood choice?   总被引:1,自引:1,他引:0  
There is a substantial literature on the residential mobility process itself and a smaller contribution on how households make neighborhood choices, especially with respect to racial composition. We extend that literature by evaluating the role of income and socioeconomic status in the neighborhood choice process for minorities. We use individual household data from the Los Angeles Family and Neighborhood Study to investigate the comparative choices of white and Hispanic households in the Los Angeles metropolitan area. We show that income and education are important explanations for the likelihood of choosing neighborhoods. But at the same time, own race preferences clearly play a role. While whites with more income choose more white neighborhoods, Hispanics with more income choose less Hispanic neighborhoods. One interpretation is that both groups are translating resources, such as income and education, into residence in whiter and ostensibly, higher status neighborhoods.
William A. V. ClarkEmail:
  相似文献   

9.
Against the backdrop of occasional claims by social scientists that class analysis is no longer relevant this article will study the consumption patterns of different classes. Two hypotheses are derived and tested. These are to assume that classes' consumption differences are due to processes of social closure, or are of a cultural kind. This is investigated using a Swedish family expenditure data-set from 1992. The focus is on classes' different uses of their incomes regarding basic expenditures, expenditures on non-durables and ownership of durables. The most striking result is that 'higher' classes tend to spend a great deal of money on activities outside the home, 'appearance' and information, while other classes' consumption resembles the 'higher' classes, to different degrees. Moreover, the class hierarchy, constructed theoretically from employment factors, resembles a hierarchy constructed from similarities in patterns of consumption. The main conclusion is that class matters, in interesting ways, for consumption, though there are also other powerful factors. The closure hypothesis receives support, even though a combination of the two hypotheses seems sound.  相似文献   

10.
Thanks to the introduction of the reform and opening up policy, China has achieved rapid economic development and recorded a significant rise in the income level of its urban and rural residents as a whole. However, the level of income varies from industry to industry, from rural to urban areas, and from region to region, and the gap is widening. Estimates show that the Gini coefficient (an economic indicator measuring disparities in personal income) in China was 0.424 in 1996, 0.456 in 1998,…  相似文献   

11.
The recent impetus of tougher immigration-related measures passed at the state level raises concerns about the impact of such measures on the migration experience, trajectory, and future plans of unauthorized immigrants. In a recent and unique survey of Mexican unauthorized immigrants interviewed upon their voluntary return or deportation to Mexico, almost a third reported experiencing difficulties in obtaining social or government services, finding legal assistance, or obtaining health care services. Additionally, half of these unauthorized immigrants reported fearing deportation. When we assess how the enactment of punitive measures against unauthorized immigrants, such as E-Verify mandates, has affected their migration experience, we find no evidence of a statistically significant association between these measures and the difficulties reported by unauthorized immigrants in accessing a variety of services. However, the enactment of these mandates infuses deportation fear, reduces interstate mobility among voluntary returnees during their last migration spell, and helps curb deportees’ intent to return to the United States in the near future.  相似文献   

12.
Classical test theory defined the predictive validity of a test as the ordinary Pearson correlation between scores on the test and scores on a validation criterion. For some purposes this definition is satisfactory, but for others it leads to complications, because derivation of familiar equations relating validity and reliability requires an independent assumption of uncorrelated errors of measurement. The present paper proposes an alternate definition of validity that avoids difficulties arising from correlated error scores and is more consistent with standard definitions of true score, error score, and reliability in the classical theory.  相似文献   

13.
Theory predicts that lower-income households will produce more goods at home. Thus extended income, which includes household production, should be more equally distributed than money income. Previous studies have confirmed the greater equality of extended income and speculated that the result is due to the weak correlation between money income and household production. We also confirm this result and identify the true reason. We show that the weak correlation cannot be the explanation and that virtually all of the difference in measured inequality between the two measures is due to the addition of a large constant—the average value of household production—to money income.  相似文献   

14.
How powerful is demography? The Serendipity Theorem revisited   总被引:1,自引:1,他引:0  
Introduced by Samuelson (Int Econ Rev 16(3):531–538, 1975), the Serendipity Theorem states that the competitive economy will converge towards the optimum steady-state provided the optimum fertility rate is imposed. This paper aims at exploring whether the Serendipity Theorem still holds in an economy with risky lifetime. We show that, under general conditions, including a perfect annuity market with actuarially fair return, imposing the optimum fertility rate and the optimum survival rate leads the competitive economy to the optimum steady state. That Extended Serendipity Theorem is also shown to hold in economies where old adults work some fraction of the old age, whatever the retirement age is fixed or chosen by the agents.  相似文献   

15.
How do Recent Population Trends Matter to Climate Change?   总被引:2,自引:0,他引:2  
Although integrated assessment models (IAM) of the Intergovernmental Panel on Climate Change (IPCC) consider population as one of the root causes of greenhouse gas emissions, how population dynamics affect climate change is still under debate. Population is rarely mentioned in policy debates on climate change. Studies in the past decade have added significantly to understanding the mechanisms and complexity of population and climate interactions. In addition to the growth of total population size, research shows that changes in population composition (i.e. age, urban–rural residence, and household structure) generate substantial effects on the climate system. Moreover, studies by the impact, vulnerability and adaptation (IAV) community also reveal that population dynamics are critical in the near term for building climate change resilience and within adaptation strategies. This paper explores how global population dynamics affect carbon emissions and climate systems, how recent demographic trends matter to worldwide efforts to adapt to climate change, and how population policies could make differences for climate change mitigation and adaptation.  相似文献   

16.
Education and family planning can both be influenced by policy and are thought to accelerate fertility decline. However, questions remain about the nature of these effects. Does the effect of education operate through increasing educational attainment of women or educational enrollment of children? At which educational level is the effect strongest? Does the effect of family planning operate through increasing contraceptive prevalence or reducing unmet need? Is education or family planning more important? We assessed the quantitative impact of education and family planning in high-fertility settings using a regression framework inspired by Granger causality. We found that women's attainment of lower secondary education is key to accelerating fertility decline and found an accelerating effect of contraceptive prevalence for modern methods. We found the impact of contraceptive prevalence to be substantially larger than that of education. These accelerating effects hold in sub-Saharan Africa, but with smaller effect sizes there than elsewhere.  相似文献   

17.
How does POSSLQ measure up? Historical estimates of cohabitation   总被引:1,自引:0,他引:1  
Casper LM  Cohen PN 《Demography》2000,37(2):237-245
We use March Current Population Survey (CPS) data from 1977 to 1997 to produce a new historical series of indirect cohabitation prevalence estimates. We compare our new estimates with those produced by the traditional method and evaluate the new estimates. We then compare the indirect estimates with the new direct estimates to investigate whether biases exist in the indirect estimates. Our findings indicate that the traditional indirect method of estimating cohabitation prevalence underestimates cohabitors in different subpopulations, especially among those with children. We also find that the new indirect measure produces relatively unbiased estimates of cohabitors' characteristics.  相似文献   

18.
Sharp differences in time use by nativity emerge when activities are distinguished by incidence and intensity in recent US data. A model with daily fixed costs for assimilating activities predicts that immigrants are less likely than natives to undertake such activities on a given day; but those who do will spend relatively more time on them. Activities such as purchasing, education, and market work conform to the model. Other results suggest that fixed costs for assimilating activities are higher for immigrants with poor English proficiency or who originate in less developed countries. An analysis of comparable Australian data yields similar results.  相似文献   

19.
20.
Social Indicators Research - In this study, we aim at clarifying the role of economic inequality on the subjective well-being of individuals. For this purpose, we use more than 180,000 individuals...  相似文献   

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