An occupational tale of two cities: Minorities in London and New York

In this paper, queuing theory is tested through an examination of the occupational attainment of six groups of non-whites in London and New York. Workers in the dominant economy are distinguished from those in the niche economy and emphasis is placed on the former. Black male immigrants in New York and black female immigrants in London hold more favorable occupational status. These results reflect differences in (1) the presence of indigenous minorities—African Americans and Puerto Ricans—in New York but not London, and (2) the relatively low position of indigenous minority males compared to the relatively middling position of indigenous minority females in New York:S labor queue.     

A neo-classical education transitions approach: A corrected tale for three cohorts

Analysts have regarded education transitions research as revealing late stage educational egalitarianism in the United States (e.g., Stolzenberg, 1994) and as sufficiently robust to guide policymakers (e.g., Hout, 2007). However, critics suggest parameter estimates are contaminated by selection bias (e.g., De Graaf & Ganzeboom, 1993), key parameter differences are unidentified (e.g., Cameron & Heckman, 1998), cross-transition comparisons are faulty, and the data are inappropriate. Useful modifications have been offered, (e.g., [Breen and Jonsson, 2000], [Hauser and Andrew, 2006] and [Lucas, 2001]), but analysts have yet to comprehensively address the challenges critics pose. In response, we propose a neo-classical education transitions approach that uses fuller sets of data and models that explicitly address the primary threats to proper inference. Using this approach we re-assess the educational attainment process for a baby boomer cohort, a Generation X cohort, and a Generation Y cohort. All cohorts fail to replicate the waning coefficients pattern. Methodologically, the study responds to criticisms in a way that offers methods for continued cross-national comparative research. Substantively, the study undermines confidence that standard education transitions research can provide policy guidance and the claim of late stage egalitarianism in the United States educational attainment process.     

老龄化地区差异的因果分析

我国老龄化速度快而且地区差异颇大,通过对1990-2002年各省份老年人口比重聚类,可将老龄化分为五种模式:高度老龄化模式、中高度老龄化模式、中度老龄化模式、中低度老龄化模式、低度老龄化模式。经老龄化因果分析发现:老龄化与经济发展水平具有相互促进的正相关关系,经济发展水平高的省份,老龄化程度高,同理老龄化程度高的省份,经济发展水平也高;反之,经济不发达的省份,老龄化程度低。在老龄化过程中由于出生率降低、少年儿童比重降低,人口增长速度下降,因此在老龄化初期可通过控制人口分母效应促进经济发展。     

Birth spacing dynamics in China: The cases of Hebei and Shaanxi provinces

Even as fertility has declined in China in the last several decades, the first and second birth intervals have become shorter over time and the probability of having a second child has increased since the late 1970s. This increase in the probability of conception seems to be contradictory to the Chinese government's birth planning strategy which explicitly stresses timing and parity. Using retrospective survey reports from 1985 in Hebei and Shaanxi provinces, the study explored this paradox. The study revealed several findings: (1) government intervention, especially the one-child policy of the late 1970s, had a strong, unexpected influence on early conception in China; (2) the timing and probability of having a first birth were associated with macrosocial forces and familial relationships; and (3) the timing and probability of having a second birth were associated with biosocial, familial as well as macro-social characteristics.Abbreviations CBR crude birth rate - DPSB Department of Population Statistics, State Statistical Bureau, China - TFR total fertility rate This article is based on a paper presented at the 1991 Annual Meeting of the Population Association of America, Washington, DC, 21–23 March 1991.     

Homosexuality: Protestant, Catholic, and Jewish issues; a fishbone tale

Homosexuality is compared to a fishbone caught in the church's throat that the church can neither eject nor swallow entirely. Authors in all denominations are questioning traditional church stances influenced by the model of clinical pastoral education. Most major denominations have made policy statements on homosexuality. Four such stances discussed here highlight some of the common issues denominations face in their reexamination of the subject. Homosexuals struggling for full acceptance in the church must confront the classical understanding of the human being and human sexual differentiation as these concepts have traditionally influenced the churches.     

A comparison and latent variable test of two fertile ideas

Perhaps the two most important recent strands in the economics of fertility have been developed by Becker and Easterlin. Both suggest possible biases due to unobserved variables. Becker earlier emphasized changing shadow prices for child quantity and quality and, more recently, intergenerational serially-correlated endowments, all with given preferences. Easterlin has focused on intergenerational serially-correlated preferences. Some demographers have suggested that the Becker and Easterlin approaches are converging and may not be identified from each other.We demonstrate that while the Becker endowment and Easterlin taste models can be expressed in terms of the same variables, it is possible to identify each of the models because of different signs in a latent variable system that uses information from individuals, siblings, and cousins. Estimates of this model are consistent with the Easterlin, but not the Becker formulation. But neither model results in significant income coefficient estimates.The authors thank NIH for research support and Alan Mathios for excellent research assistance. The usual disclaimer applies.     

Thailand: PPAT extends services to southern provinces; project on better living for women

The Planned Parenthood Association of Thailand (PPAT) aims to promote living conditions for Thai people. Accordingly, PPAT is planning to implement Family Health Promotion for the Southern Provinces Project, with emphasis on mother and child care. Another PPAT project started in 1978 was the Women's Better Living Project in Ubon Rachathani Province. The project aims to improve the living conditions of housewives in the northeastern region by giving them vocational training and knowledge on health and nutrition. Housewives were taught kitchen gardening, dressmaking, soil fertilizing, making waste drainage wells, wastewater drainage beneath their houses, and proper cooking methods. This project is expected to improve the living conditions of rural people, thereby easing the problem of migration from the northeast to some extent.     

A general method of decomposing a difference between two rates into several components

In her work on the components of a difference between two rates, Kitagawa (1955) was successful in dividing the difference into the rate effect and the effect of the factor, for data classified by one factor. Her formulation for data classified by two factors, however, involves an interaction term which is difficult to interpret. Retherford and Cho (1973) devised a method that does not include any interaction terms. However, their method has other limitations, such as the dependence of the results on the order in which the effects of the factors are computed. In this paper, we provide a general method capable of handling any number of factors, which is developed along the lines suggested by Kitagawa and by Retherford and Cho but without the limitations of their methods.     

A study of the correlation bias of unrecorded events by two independent enumeration systems

In this paper the allegation that, when using the Chandrasekar-Deming technique with two independent enumeration systems to record the incidence of vital events and migrations, each individual system misses the same type of event is investigated. If this correlation bias were to occur frequently enough, it could result in a serious underestimation of a given type of event. Using vital events and migrations data derived from a longitudinal survey conducted in Liberia between 1969 and 1973, the estimated number of recorded events is tabulated into homogeneous groups that are demonstrated to affect omission rates. The proportion of missed eyents is computed separately for each enumeration system, and the presence or absence of a significant correlation mathematically determined. The results of this study suggest that no significant correlation could be demonstrated in the type of birth, death or infant death that was commonly missed by each individual enumeration system. This indicates that the omission of a birth, death or infant death was apparently a random occurrence as far as the individual casefinding systems were concerned. The authors conclude that any underestimation of vital events from this type of correlation bias may not be as serious as originally imagined.

In contrast to this observation, the omission of particular types of migrations by each enumeration system was apparently not a random occurrence, but was associated with the direction of migration. This implies that selected migration rates in the liberian survey were probably understated and this could happen in other longitudinal surveys, unless specific precautions are taken to avoid it.     

A study of the correlation bias of unrecorded events by two independent enumeration systems

Summary In this paper the allegation that, when using the Chandrasekar-Deming technique with two independent enumeration systems to record the incidence of vital events and migrations, each individual system misses the same type of event is investigated. If this correlation bias were to occur frequently enough, it could result in a serious underestimation of a given type of event. Using vital events and migrations data derived from a longitudinal survey conducted in Liberia between 1969 and 1973, the estimated number of recorded events is tabulated into homogeneous groups that are demonstrated to affect omission rates. The proportion of missed eyents is computed separately for each enumeration system, and the presence or absence of a significant correlation mathematically determined. The results of this study suggest that no significant correlation could be demonstrated in the type of birth, death or infant death that was commonly missed by each individual enumeration system. This indicates that the omission of a birth, death or infant death was apparently a random occurrence as far as the individual casefinding systems were concerned. The authors conclude that any underestimation of vital events from this type of correlation bias may not be as serious as originally imagined. In contrast to this observation, the omission of particular types of migrations by each enumeration system was apparently not a random occurrence, but was associated with the direction of migration. This implies that selected migration rates in the liberian survey were probably understated and this could happen in other longitudinal surveys, unless specific precautions are taken to avoid it.     

中国大陆31省（市、自治区）高校教育、科研实力评价

利用层次分析方法,对各省(市、自治区)的高校教育实力进行了较全面、系统的评价,得出了2004年中国各省(市、自治区)高校教育实力排行榜、2004年中国备省(市、自治区)经济竞争力水平排行榜和2004年中国各省(市、自治区)人口竞争力水平排行榜,并对各个指标进行了分析.利用SPSS统计分析软件.对27个省的教育实力与人口总教、与GDP进行了二元回归,得到教育实力与人口、经济之问的关系.     

A comparison of two versus four sterile water injections for the relief of back pain in labour: A multicentre randomised equivalence trial

BackgroundRecent trials demonstrated the safety and efficacy of sterile water injections to provide relief from labour back pain. While four injections is the most common approach variations in technique, such as employing two injections, are also used.AimTo determine if the analgesic effect of two sterile water injections is clinically equivalent to four.Methods238 women in labour with a Visual Analogue Scale pain score (VAS) of 70 millimetres (mm) (0 = no pain; 100 = worst pain imaginable) were randomised to two or four sterile water injections. The primary outcome was pain measured on a VAS at 30 min post treatment. A priori margin of equivalence was set at ±10 mm. Secondary outcomes included the likelihood of achieving an at least 30% and 50% reduction in pain, birth and neonatal outcomes.ResultsAt 30 min post-injection the difference in VAS scores between the techniques was ?5.97 (95% Confidence Interval [CI] ?13.18–1.22). As the lower end of the CI exceeds the margin of ?10 mm equivalence was not demonstrated. Both techniques achieved an at least 30% reduction in pain in over 75% of participants though duration of effect was longer in the four injection group. There was no difference in other birth related secondary outcomes.ConclusionFour injections provided a margin of benefit over two injections in level and duration of analgesia.DiscussionFour injections remains the technique of choice though two injections still provided significant pain relief and would be suitable where it was not possible or desirable to provide four.     

A further note on the estimation of a fitness function from two samples taken from a popolation

Summary A modification is proposed for the moments method for estimating a fitness function that was discussed in an earlier paper (Manly, 1976b). This modification ensures that fitness estimates are always positive. The theory has been worked out for a fitness function of any number of variables and a computer program has been written to carry out the iterative calculations needed for estimation.     

重新认识恩格斯晚年的两种生产决定论——对两种生产理论的彻底反思

近几年理论界在尝试反思我国控制人口的基本理论———两种生产理论 ,但不彻底。笔者从“源头”上对恩格斯晚年的两种生产决定论作出重新认识 ,认为两种生产决定论明白无误 ,与“生产力是社会发展的最终决定力量”具有牵连性、依附性 ,前者是实践作用论 ,后者是实践的机制作用论 ,都是正确的。为此 ,应运用最新认识对过去的认识进行清理或梳理以建立新的人口理论     

Quality of life perceptions in two cultures

This paper reports and analyzes the quality of life perceptions held by the inhabitants of two culturally different but demographically similar cities: Springfield, Illinois and Aix-en-Provence, France. Although the Springfielders expressed greater satisfaction than the Aixois in virtually all the life domains covered by the research, the areas of relative satisfaction and dissatisfaction were remarkably similar in the two cities; furthermore, the domains in which the French indicated the least satisfaction were generally ones where their objective quality of life conditions were inferior to those of their American counterparts. Multiple regression techniques are used to trace the relative contribution of domain satisfactions and demographic characteristics in explaining respondents' comparative life enjoyment and reported levels of happiness.     

Comparing two global measures of perceived neighborhood quality

This article examines and compares two global measures of perceived neighborhood quality: satisfaction and attachment. In doing this, the article expands upon the general satisfaction model by developing and testing a model of perceived neighborhood quality which is appropriate to both of these summary measures. Using survey data, the article demonstrates that satisfaction and attachment are each affected by social interaction in the neighborhood and that each can be distinguished by how strongly it taps the cognitive and affective components of well-being. The article also demonstrates the differential impact of general and local social status variables on each of the global measures as well as the impact of perceived homogeneity.     

Hemorrhoids during pregnancy: Sitz bath vs. ano-rectal cream: A comparative prospective study of two conservative treatment protocols

Background

Hemorrhoids are a very common ano-rectal condition affecting pregnant females worldwide and representing a major medical and socioeconomic problem. In this paper, we aim to compare the effectiveness of the Sitz bath method with an ano-rectal cream as part of a conservative management protocol to treat hemorrhoids among pregnant Saudi Arabian females.