Posts and Telecommunications, Beij

3G (third generation), a new dynamic load-balancing algorithm is proposed. It bases on dynamic feedback and imports the increment for admitting new request into the load forecast. It dynamically adjusts the dispatching probability according to the remainder process capability of each node. Experiments on the per- formance of algorithm have been carried out in GMLC and the algorithm is compared with Pick-KX algorithm and DFB (Dynamic FeedBack) algorithm in average throughput     

some related books,the life and achievements o

ande,who lived in Qing Dynasty,are partly missing,or a little different from the facts.Based on the materials from all kinds of ancient texts,this paper gives a in-depth research on their name、origin、family、works、experience,friends and so on.Qing Dynasty;playwright;a in-depth research0暨南学报(哲学社会科学版)Philosphy & Social Science Edition (Bimonthly)140-145+158I209F083;3;F;H;F083_3;陆勇强;134-139+152赫德与鸦片“税厘并     

Separating age,period, and cohort effects in white U.S. fertility, 1920–1970

Four models are developed to describe the odds transformation of period- and age-specific fertility rates as products of age, period, and cohort effects. These are applied to data for white U.S. women age 15–44 from 1920 to 1970, with equal weights given to each rate. All models which include age fit subsets of the data extremely well. Per effect, the incorporation of periods improves the fit much more than the incorporation of cohorts. It is shown that first differences are invariant in two-effect models, and second differences are invariant in the three-effect models.     

Hurdles or walls? Nativity,citizenship, legal status and Latino homeownership in Los Angeles

Homeownership is directly and indirectly linked with many positive child, adult, and community-level outcomes. Prior research offers strong evidence that nativity and immigrants’ citizenship status shapes U.S. homeownership, but relatively little work has explored how immigrants’ legal status is connected with homeownership. This study draws from locational attainment and classic assimilation theories to develop hypotheses about sources of intra-Latino heterogeneity in homeownership. Los Angeles Family and Neighborhood Survey data are used to contrast four distinct groups of Latinos: U.S. born natives, naturalized citizens, authorized non-citizens, and unauthorized non-citizens. Logistic regression results indicate baseline and residual variation in Latino homeownership based on immigrant citizenship and legal status. Of these, unauthorized non-citizens are the least likely to own their home. The results provide support for all three theoretical models, particularly the place stratification perspective. The results also point to the need for more housing studies that jointly examine citizenship and legal status.     

Misconceived equity? Health care resources,contextual poverty,and child health disparities in Peru

Although many studies have examined determinants of child health, fewer have explored factors explaining regional disparities in child health outcomes. In the Peruvian context, we examined the relationship between regional disparities in child malnutrition and local variation in health resources (health care resources and the socioeconomic environment). Using the Peruvian 2007–2008 Continuous Demographic and Health Survey (N = 8020) and governmental administrative data, our analyses show that 1) only selected types of health care resources (medical professionals and outpatient visits) are related to child nutritional status, 2) local poverty predicts nutritional status net of household characteristics, and, most importantly, 3) a significant portion of regional differences in child malnutrition are explained by local poverty, whereas health care resources are not associated with regional disparities. These findings suggest that the local socioeconomic environment is a key determinant of both child health outcomes and regional disparities in these outcomes.     

Who is the better applicant? Effects from gender, academic record, and type of decision

This experiment recreates several features of the selection of candidates for junior professional positions. The situation of central interest involves an assessor (either male or female) and a pair consisting of a male and a female applicant with either equivalent or slightly different academic records. We also investigate effects from quality of record (either excellent or poor) and type of decision (namely, choice between applicants, and ratings of competence and suitability). Our hypotheses consider both gender as social status and as social identity, and predict different outcomes depending on decision type. In line with those predictions, findings show that, at both levels of performance, the question about competence elicited effects only from the two applicants’ relative academic standing, while the choice and suitability measures show effects from that standing as well as from sex category of applicant and of assessor. Results and their interpretation are presented and discussed in detail.     

American income inequality across economic and geographic space, 1970–2010

This analysis examines the spatial clustering of income inequality and its socioeconomic correlates at the meso-scale over the past four decades. Cluster analysis is used to group N = 3078 counties into five inequality clusters; and multinomial logistic regression is used to assess the effects of socioeconomic correlates. High and extreme inequality places are concentrated in large metropolitan centers, high amenity rural areas, and parts of the Great Plains and Mountain West. They tend to have better socioeconomic outcomes, with fewer at-risk populations, higher incomes, lower poverty, and greater economic participation. Unequal places are more specialized in high-skill finance and professional services, and in energy-based mining. By contrast, equality places are associated with low-skill services, education and health services, manufacturing, and stable farm economies.     

Not a lonely crowd? Social connectedness,religious service attendance,and the spiritual but not religious

Using the 2006–2014 General Social Survey and 2006–2012 Portraits of American Life Study, I find that on three dimensions of social connectedness: social interaction frequency, core discussion network size, and number of close ties, that religious service attenders are more connected than religious non-attenders and then either spiritual nor religious, but there are few differences between attenders and the spiritual but not religious. Difference-in-differences and fixed-effects models show little evidence that switches between categories are associated with changes in connectedness, and additional models show that prior social connectedness explains only a small amount of future switches. This paper challenges assumptions that the non-religious are a homogenous group lacking the benefits provided though the social networks of religious congregations and has implications for research on what it means to be spiritual, measuring religion and spirituality, and understanding the role of formal organizations in social life.     

Selling students short: Racial differences in teachers’ evaluations of high,average, and low performing students

Education scholars document notable racial differences in teachers’ perceptions of students’ academic skills. Using data from the Early Childhood Longitudinal Study-Kindergarten Cohort, this study advances research on teacher perceptions by investigating whether racial differences in teachers’ evaluations of first grade students’ overall literacy skills vary for high, average, and low performing students. Results highlight both the overall accuracy of teachers’ perceptions, and the extent and nature of possible inaccuracies, as demonstrated by remaining racial gaps net literacy test performance. Racial differences in teachers’ perceptions of Black, non-White Latino, and Asian students (compared to White students) exist net teacher and school characteristics and vary considerably across literacy skill levels. Skill specific literacy assessments appear to explain the remaining racial gap for Asian students, but not for Black and non-White Latino students. Implications of these findings for education scholarship, gifted education, and the achievement gap are discussed.     

“Making it work: Migration,motherhood and employment in Australia”

The transition into motherhood is often associated with a reduction in women's labor force participation, reinforcing gender employment hierarchies. Our study compares women's employment status and paid work time prior to and following birth among immigrants and native-borns in Australia. We also consider how these outcomes differ by generation status and racial and ethnic background. Australia provides a valuable context to understand these outcomes given its skilled migration policy, racial and ethnic diversity, limited childcare and family leave policies, and high rates of part-time work among mothers. We examine longitudinal data from the Household Income and Labour Dynamics in Australia (HILDA) for women from 2001 to 2016. We find that migrant women show lower employment levels and commensurate work hours than native-borns prior to childbirth. After childbirth, migrant mothers maintain lower employment levels, but higher work hours than native-born mothers. Overall, we find that relative to native-borns, migrant women typically experience a smaller reduction in employment and work hours following childbirth, but some of this is likely due to their lower starting position prior to childbirth. Our findings have implications for skilled immigration policies and highlights the unique work-family pressures facing immigrant and native-born women.     

Causes of ethnic conflict and protest in Urban America, 1877–1889

Studies of ethnic conflict and protest find patterns of systematic “cycles of protest” in which minorities become the targets of concentrated attack or instigate protests against discrimination and prejudice. Such cycles have been linked to the persistence of economic exploitation and the occurrence of economic contractions, which exacerbate ethnic tensions. Proponents of competition theory claim that rising levels of ethnic competition over jobs, housing, and other resources increases the likelihood of ethnic collective action. This paper extends competition theory by specifying the effects of changes in immigration flows and economics on ethnic competition. It uses data on collective actions in 80 large cities in the United States from 1877 through 1889 to test propositions about competition and contagion. Analyses reported here support the contention that (a) high levels and rapid rates of immigration, (b) increases in the wages of common laborers, (c) increases in business failures, and (d) contagion, indicated by the recency of prior waves of events, all raise rates of ethnic collective action.     

Does race matter in the search for housing? An exploratory study of search strategies, experiences, and locations

In a departure from most studies of the causes of racial residential segregation that focus on the three main factors of economics, preferences, and discrimination, this paper examines one of the mechanisms through which segregation may be perpetuated: the housing search process itself. Data come from a 2004 face-to-face survey of an area probability sample of African American and white householders living in the three counties of the Detroit metropolitan area (n = 734). These data are used to address three research questions: (1) What are the strategies people use to find housing, and are there racial differences in those strategies? (2) Do whites and African Americans report similar or different experiences in the search for housing? (3) Do the locations in which people search for housing vary by race? Results show that once controlling for the type of search and background characteristics, the search strategies are generally similar for whites and blacks, though more so for buyers than renters: for example, black renters use more informal strategies and networks than do white renters. Analyses that look at the features of these strategies, however, reveal some significant racial differences. Search experiences are similar in terms of length and number of homes inspected, but other objective and subjective questions about the search show blacks at a disadvantage compared to whites: African Americans submit more offers/applications for homes, report more difficulties, and are much more likely to feel they were taken advantage of during the search. The racial characteristics of the communities in which blacks and whites search are quite different: whites mainly search in white communities, while African Americans search in communities with a variety of racial compositions. The paper concludes with a call for further research on housing search strategies, with particular attention to the role of social networks.     

Irreconcilable differences? Ethnic intermarriage and divorce in the Netherlands, 1995-2008

This study uses population data of the Netherlands (municipality registers) between 1995 and 2008 to describe and explain the occurrence of divorce among recently newlywed interethnic and mono-ethnic couples (N = 116,745). In line with homogamy theory, divorce risks are higher for interethnic couples, in particular if the spouses were born and raised in countries that are culturally distant from each other. In addition, the effect of cultural distance is smaller for second generation immigrants than for first generation immigrants. There is no evidence for a higher risk of divorce among Black-White marriages. In line with convergence theory, results show that the higher the divorce propensity in the wife’s origin country, the higher the divorce risk of a couple is.     

Population migration and children’s school enrollments in China, 1990–2005

This paper examines the impact of migration on children’s school enrollment by analyzing the micro-data from Chinese population censuses in 1990 and 2000 and mini-census in 2005. We match school-age children (7–14 years old) with their parents, and examine how migration status and parents’ absence affect children’s school enrollment in urban China. We also compare rural–urban migrant children with their peers in both origin counties and destination districts. Results show that migrant children are less likely to be enrolled in school than urban local children and that children of rural registration status are particularly disadvantaged in school enrollment over the whole examined period in urban China. Rural–urban migrant children fare significantly worse than non-migrant children in both origins and destinations and noticeably they are even less likely than left-behind children to be enrolled in school. The likelihood of being enrolled in school increases for rural–urban migrant children as they spend more time in destinations.     

Have children adapted to their mothers working, or was adaptation unnecessary? Cohort effects and the relationship between maternal employment and child well-being

Drawing on previous theoretical and empirical work, we posit that maternal employment influences on child well-being vary across birth cohorts. We investigate this possibility by analyzing longitudinal data from a sample of children and their mothers drawn from the National Longitudinal Survey of Youth. We introduce a series of age, cohort, and maternal employment interaction terms into multilevel models predicting child well-being to assess whether any potential short-term or long-term effects of early and current maternal employment vary across birth cohorts. Results indicate that maternal employment largely is inconsequential to child well-being regardless of birth cohort, with a few exceptions. For instance, children born in earlier cohorts may have experienced long-term positive effects of having an employed mother; however, as maternal employment became more commonplace in recent cohorts, these beneficial effects appear to have disappeared. We discuss theoretical and methodological implications of these findings.     

From Rebelling to Revolutionizing:Ideas of Safeguarding Home,Class and Village Revolution Mobilization——Focusing on CPC and Broadsword Groups in West Anhui

皖西大刀会,作为民间自卫武装团体,带有浓厚的迷信传统及地域保土意识,它的存在是对乡村权力网络结构的一种牵制,并不自觉地通过反政府的叛乱而不断被政府化,也被地方精英默许为非体制力量的存在。中共革命从城市转入乡村过程中,皖西豪绅多组织大刀会团体以图自保,这样,中共就必须将大刀会从地方性叛乱势力转化为全国性革命势力,或者说将大刀会叛乱这种传统乡村集体行动形式库转化为自主跨地域性、强组织性并带有浓厚阶级性的现代集体行动形式库。在革命践行中,中共采取多管齐下的方式进行调适、分化瓦解,最终成功达到瓦解其组织,并使其会众步入革命阵营,成为革命的同路人。     

The declining earnings gap between young women and men in the United States, 1979–2018

We examine the dynamics of the gender earnings gap over the 1979 to 2018 period among full-time workers aged 25–29, focusing on the role of marital status and the presence of children. Using data from multiple years of the Current Population Survey, we find that the earnings gap declined among all groups of men and women, and by 2018 there was earnings parity among the those who were not married and without children. The share of people in this group also grew over the period, and comprised a majority of both men and women by 2018. We also find that while marriage was associated with lower earnings among women in 1979, by 2018 it was associated with higher earnings, suggesting greater positive selection of women with high earnings potential into marriage. The positive association between marriage and earnings among men remained stable. While we found a persistent earnings penalty for having children among women over the period, we found an emerging dampening effect of having children over time among men, which suggests that greater participation in childcare among men has led to lower earnings than in the past (i.e., a causal connection) and/or an emerging selection effect of young men more interested in childrearing over time, perhaps reflecting a cultural shift.