Post-neonatal mortality in Rural India: Implications of an economic model

In this paper we develop and test a theory of childhood mortality after the first month of life. Parents are assumed to have well-defined family size and sex composition objectives and to face severe budget constraints. In this set of circumstances, it is understandable that they will make allocative decisions that will affect the survival probabilities of children. These decisions and the environmental influences on mortality are the basic forces which determine whether a child will survive through the post-neonatal period. The model is tested with survey data from rural Uttar Pradesh, India. The results are consistent with the hypothetical framework discussed above. The burden of this pattern of choice is felt particularly strongly by female births.     

斯波斯基低温荧光光谱实验条件的考察

本文较全面地考察了影响斯波斯基(shpolískil)低温荧光光谱的因素,包括单色仪狭缝、斯波斯基溶剂基体、浓度效应、冷冻速率等,由此确定了产生斯波斯基光谱的最佳条件。     

Survival estimation and the effects of dependency among animals

Survival models assume that fates of individuals are independent, yet the robustness of this assumption has been poorly quantified. We examine how empirically derived estimates of the variance of survival rates are affected by dependency in survival probability among individuals. We used Monte Carlo simulations to generate known amounts of dependency among pairs of individuals and analyzed these data with Kaplan-Meier and Cormack-Jolly-Seber models. Dependency significantly increased these empirical variances as compared to theoretically derived estimates of variance from the same populations. Using resighting data from 168 pairs of black brant ( Branta bernicla nigricans ), we used a resampling procedure and program RELEASE to estimate empirical and mean theoretical variances. We estimated that the relationship between paired individuals caused the empirical variance of the survival rate to be 155% larger than the empirical variance for unpaired individuals. Monte Carlo simulations and use of this resampling strategy can provide investigators with information on how robust their data are to this common assumption of independent survival probabilities.     

The ‘greening’ of organizational change: A case study

There are many emerging corporate strategies designed to make large, complex business enterprises more responsive to environmental concerns. One major corporate innovation that has a direct environmental impact is the increased use of telework options for employees. These programmes significantly reduce the amount of employee travel, thereby reducing air pollution. However, adoption of telework programmes requires a change in organizational management strategies. The prevailing attitude of “If I can't see them, how do I know they are working” must be changed. This attitudinal change, coupled with the structural move towards the ‘virtual corporation’ can be managed using existing organizational development strategies and tactics. The paper reports the results of several field studies in California which examined the phenomenon of telework. The studies consistently report increases in worker productivity of 16 per cent and a significant reduction of personal automobile travel of between 20–40 per cent while engaged in telework. The paper concludes with a set of recommendations for a management strategy for managing this change and highlights areas for future research.     

The influence of urine from asymptotic laboratory populations on sexual maturation in prairie deermice

Summary Male and female prairie deermice housed singly from weaning (21 days) until 40 days of age had urine from one of the following sources applied daily to their nostrils: sexually mature laboratory population males or females, and sexually mature breeder males or females from our laboratory colony. Other males and females were treated with water. Records were obtained of the weights of the tests, seminal vesicles and bacula of males and the ovaries and uteri of females at 40 days of age. The major results of this study were as follow: Female urine from sexually mature and inhibited population or isolated mice stimulated the development of the male reproductive organs significantly more than water or male urine. Male urine applied to young males did not differentially affect the weights of their reproductive organs compared with water and thus showed no inhibition effects. The reproductive organs of females treated with male urine did not differ significantly in weight from those of females treated with female urine. Females treated with water developed significantly larger uteri than those treated with urine from sexually mature population females (P≤0.02), inhibited population females (P<0.001) and inhibited population males (P<0.007).     

Empowering Lesbian,Gay, Bisexual,and Transgender Youth: Lessons Learned From a Safe Schools Summit

ABSTRACT

The bullying of lesbian, gay, bisexual, and transgender (LGBT) youth in schools is a significant problem in the United States. This study examined responses of youth participants at a statewide Safe Schools Summit to a survey of their experiences with school-based violence, harassment, and discrimination, and of the effects of their attendance at the Summit. Quantitative analyses found that 92% of respondents felt “more empowered” following participation in the Summit. Qualitative analyses found several emerging themes related to respondents' experiences with victimization (leading to a sense of powerlessness and attempts at self-protection) and to their experiences at the Summit itself (leading to catharsis, strengthened skills, and a commitment to confront bullies and to make schools safer). A conceptual model of the interaction of these factors is presented and implications for further research and practice are discussed.     

Access to homeownership among immigrant groups in Canada

Ces dernières années l'intéret s'est accru pour les expériences des immigrants après leur arrivée dans la societé nord-américaine. Dans cet article, nous argumentons le fait que le logement, et plus spécifiquement le bail, est un sujet important bien que largement négligé en ce qui concerne la vie de l'immigrant dans la société canadienne. En utilisant des chiffres du recensement de 1986 et la structure des modèles log-linéaires, nous examinons les baux des logements des immigrants dans les différentes régions du Canada. On argumente que les immigrants sont différenciés par la culture, le temps et l'espace en ce qui concerne le bail, avec des immigrants plus récents, particuliérement ceux qui arrivent des pays en voie de développement, qui ont des taux de propriété particulierement plus bas.
In recent years interest has grown in the post-arrival experiences of immigrants in North American society. In this paper we argue that housing, and more specifically tenure, is an important, though largely neglected, issue with respect to immigrant life in Canadian society. Using data from the 1986 census and a log-linear modelling framework, we examine housing tenure among immigrants in the regions of Canada. It is argued that immigrants are a culturally, temporally and spatially differentiated sub-population in regard to tenure, with more recent immigrants, especially those from the Developing World, having substantially lower rates of homeownership.