Support programmes for Roma children: do they help or promote exclusion?

This article critically examines current education programmes for Roma primary school students in the Czech Republic and the impact of these programmes. The research described here, based on in‐depth case studies, challenges popular beliefs in the ‘success’ of Roma oriented programmes, as well as the stereotypical negative images of Roma parents. The studies also explore the dilemmas experienced by teaching staff and their views of both Roma and the majority ‘non‐Roma’ children.     

日本的和平博物馆与和平研究

日本所拥有的和平博物馆数量位居世界之首,但大多数公共和平博物馆与战争博物馆一样,没有展示日本的侵略历史;即使涉及这方面,也只是展现日本作为第二次世界大战中原子弹爆炸受害者的形象,而完全忽略亚洲其他国家人民遭受日本蹂躏的苦难经历。然而另有一些公共和平博物馆和私人博物馆如高知民众所,却客观地反映了日本在二战中的侵略历史,市民们在那里建构和平的活动很是积极。在和平教育中,和平博物馆不仅在学校而且在社区均扮演着重要的角色。在冲突化解和宣扬和平思想方面,和平博物馆将发挥相当的作用。     

“My nest is full:” Intergenerational relationships at midlife

Incorporating a life course perspective, this qualitative study used focus groups to explore the experiences of midlife adults who were simultaneously providing support to emerging adult children and aging parents. Results indicated that adults situated in middle generations held beliefs that endorsed family-based responsibility to both younger and older members. Parents gladly supported children despite their longer transition to adulthood. Often unanticipated but accepted, provisions of care to aging parents were experienced with ambivalence — a joy and a burden. The transition of their parents to greater dependence helped participants gain insights into the terrain of late life and encouraged reflections about the intersection of aging, independence, and family responsibility. Participants expressed intentions to preserve their own independence and spare their children of caregiving burdens through self-directed actions. Implications focused on negotiations of family relationships around issues of independence and family responsibilities as a way to reduce intergenerational ambivalence.     

Risk Assessment of the Carbon Nanotube Group

This study assessed the health risks via inhalation and derived the occupational exposure limit (OEL) for the carbon nanotube (CNT) group rather than individual CNT material. We devised two methods: the integration of the intratracheal instillation (IT) data with the inhalation (IH) data, and the “biaxial approach.” A four‐week IH test and IT test were performed in rats exposed to representative materials to obtain the no observed adverse effect level, based on which the OEL was derived. We used the biaxial approach to conduct a relative toxicity assessment of six types of CNTs. An OEL of 0.03 mg/m³ was selected as the criterion for the CNT group. We proposed that the OEL be limited to 15 years. We adopted adaptive management, in which the values are reviewed whenever new data are obtained. The toxicity level was found to be correlated with the Brunauer‐Emmett‐Teller (BET)‐specific surface area (BET‐SSA) of CNT, suggesting the BET‐SSA to have potential for use in toxicity estimation. We used the published exposure data and measurement results of dustiness tests to compute the risk in relation to particle size at the workplace and showed that controlling micron‐sized respirable particles was of utmost importance. Our genotoxicity studies indicated that CNT did not directly interact with genetic materials. They supported the concept that, even if CNT is genotoxic, it is secondary genotoxicity mediated via a pathway of genotoxic damage resulting from oxidative DNA attack by free radicals generated during CNT‐elicited inflammation. Secondary genotoxicity appears to involve a threshold.     

On improving convergence rate of Bernstein polynomial density estimator

This paper is concerned with the Bernstein estimator [Vitale, R.A. (1975), ‘A Bernstein Polynomial Approach to Density Function Estimation’, in Statistical Inference and Related Topics, ed. M.L. Puri, 2, New York: Academic Press, pp. 87–99] to estimate a density with support [0, 1]. One of the major contributions of this paper is an application of a multiplicative bias correction [Terrell, G.R., and Scott, D.W. (1980), ‘On Improving Convergence Rates for Nonnegative Kernel Density Estimators’, The Annals of Statistics, 8, 1160–1163], which was originally developed for the standard kernel estimator. Moreover, the renormalised multiplicative bias corrected Bernstein estimator is studied rigorously. The mean squared error (MSE) in the interior and mean integrated squared error of the resulting bias corrected Bernstein estimators as well as the additive bias corrected Bernstein estimator [Leblanc, A. (2010), ‘A Bias-reduced Approach to Density Estimation Using Bernstein Polynomials’, Journal of Nonparametric Statistics, 22, 459–475] are shown to be O(n^?8/9) when the underlying density has a fourth-order derivative, where n is the sample size. The condition under which the MSE near the boundary is O(n^?8/9) is also discussed. Finally, numerical studies based on both simulated and real data sets are presented.     

How Changes in Sending Countries Influenced Patterns of Interracial Families Through Intercountry Adoption

The racial characteristics of children adopted from abroad by American parents have fluctuated sharply over time in response to changing legislation and attitudes toward intercountry adoptions in the United States and the sending countries. This study investigates how the likelihood of parents adopting a White versus non-White child varies by the characteristics of the adopted child, the parents, and the household. Our analyses, using the 2008–2012 American Community Survey, show that parents consider the child's age, sex, and health; the presence of adopted and biologically related children in the household; and shifts in the availability of children across major sending countries.     

Benzene Risk Estimation Using Radiation Equivalent Coefficients

We estimated benzene risk using a novel framework of risk assessment that employed the measurement of radiation dose equivalents to benzene metabolites and a PBPK model. The highest risks for 1 μg/m³ and 3.2 mg/m³ life time exposure of benzene estimated with a linear regression were 5.4 × 10⁻⁷ and 1.3 × 10⁻³, respectively. Even though these estimates were based on in vitro chromosome aberration test data, they were about one-sixth to one-fourteenth that from other studies and represent a fairly good estimate by using radiation equivalent coefficient as an "internal standard."     

Fertility preferences and subsequent childbearing in Africa and Asia: A synthesis of evidence from longitudinal studies in 28 populations

Survey data on fertility preferences have played a central but controversial role in fertility research and advocacy for family planning. We summarize evidence from longitudinal studies in 28 Asian and African populations on the relationship between preferences and subsequent childbearing. While we found no consistent association between women's desire to delay childbearing and subsequent fertility, the baseline desire of women to stop childbearing was a powerful predictor of subsequent fertility in all populations and increased in strength as overall contraceptive use in the study populations rose. Partners’ desire also exercised some influence but was of modest importance in most populations. However, the correspondence between desire to stop and behaviour was found to be far from perfect. Weak implementation of preferences by contraception is likely to be the major cause of this preference–behaviour discrepancy. Uncertainty and instability in preferences may also contribute to the discrepancy, particularly in sub-Saharan Africa.     

Desirable Difference: The Shadow of Racial Stereotypes in Creating Transracial Families through Transnational Adoption

The article analyzes how parents decide to adopt a child transnationally by detailing how the meaning of race is articulated in the formation of family. Drawing from my interviews with adoptive parents, I examine how they internalize ideas about different racial groups. For example, I investigate how what they have learned from the adoption agencies, their own perceptions of racial stereotypes, and their perceptions of the communities in which they reside influence their understanding of race. The article suggests that adoptive parents, when considering whether to adopt children from the U.S. or overseas, use a criteria dictated by racial stereotypes in understanding Asian Americans as the model minority, African-Americans as a deficient group, and Latinos occupying an intermediary position.     

Weighted log-normal kernel density estimation

ABSTRACT

The log-normal (LN) kernel estimator of a density with support [0, ∞) was discussed by Jin and Kawczak (2003 Jin, X., Kawczak, J. (2003). Birnbaum–Saunders and lognormal kernel estimators for modelling durations in high frequency financial data. Ann. Econ. Finance 4:103–124. [Google Scholar]). The contribution of this paper is to suggest a new class of LN kernel estimators using the idea of weighted distribution. The asymptotic properties of the new class of estimators are studied. Also, numerical studies based on both simulated and real data set are presented.