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101.
大凡读过高中的人,都知道佛莱铭左手和右手定则,这种左、右定则很容易记错,有时要将手扭歪才能判定其方向,很难运用.为了方便学生记忆及方便判定方向,设法设计出一种新的右手定则,可以同时判定磁场对电流的作用力及磁场中导线所产生的感生电流的方向,显然这种右手定则是一个创新. 相似文献
102.
Gary Neil Marks 《Social indicators research》2008,85(2):293-309
Since the early 1970s the importance of mothers’ socioeconomic characteristics on their children’s educational and occupational
attainment has been acknowledged. However, it is not clear if fathers’ characteristics have a stronger influence because men
usually have stronger attachments to the labour market, or alternatively mothers’ characteristics are more important because
of their greater role in children’s socialization. This study addresses this question by comparing the influence of father’s
and mother’s education and occupation on student performance in literacy and numeracy using data from 30 countries. The impact
of mother’s education is usually greater or comparable to that of father’s education. In contrast, substantially stronger
effects for mother’s occupational status compared to father’s were rare. In most countries the impact of mother’s socioeconomic
characteristics (education plus occupation) on student performance is comparable to that for father’s. Of the four indicators
of socioeconomic background, father’s occupational status and mother’s educational attainment tend to have stronger effects,
although many countries do not conform to this pattern. There are indications that the relative importance of mother’s characteristics
have increased over time.
相似文献
Gary Neil MarksEmail: |
103.
Jennifer J. Driscoll 《Child Abuse Review》2009,18(5):333-345
Media coverage of the death of Baby P revived national concerns about the standard of child safeguarding practice in England following the implementation of widespread structural changes in response to the Victoria Climbié Inquiry chaired by Lord Laming in 2003. This paper discusses the recommendations of Lord Laming's recent Progress Report. It questions whether the scale of the challenge in improving child protection is fully recognised and considers briefly the culture of social care in the UK and the barriers to effective reform. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
104.
The contribution of parental involvement in the parent–teacher association (PTA) to schoolchildren's performance is an issue for evaluation research. To resolve the issue, it is reasonable to differentiate people who benefit and others who do not benefit from the involvement. Such differentiation relied on survey data from 289 pairs of Hong Kong Chinese parents and their children between Grade 4 and Grade 9. It revealed that only 28.8% of the parent–child pairs had their child performance benefiting from the help of parent–teacher associations (in terms of a standardized effect of .2). Factors predictive of this minority subgroup were the child's grade and having a single parent. These factors tend to identify the need for help from parent–teacher associations, which can be a consideration for planning effective help from the associations. 相似文献
105.
106.
Children living in foster care are an especially vulnerable population who often come to the attention of Medicaid mental
health providers. These children experience a high incidence of emotional and behavioral disorders and may have specialized
treatment needs related to their living arrangement status. This study assessed whether Children’s Psychosocial Rehabilitation
could effectively treat youth with severe emotional and behavioral disorders who live in foster care. Analysis of data from
an open trial of 218 clinically-impaired youth, aged 3–18 years, revealed no reliable differences in treatment outcome between
foster versus non-foster children, with a trend toward more favorable outcomes for foster youth. Findings justify further
study of the effectiveness of this Medicaid-funded service for the treatment of youth in care. 相似文献
107.
María López González 《Disability & Society》2009,24(4):447-459
This paper sets out the results of a Spanish study of the experience and meaning of work among disabled women of two generations, with three types of disability (physical, visual and hearing). Performing a socially recognised activity such as a job is a source of emotional welfare and self‐esteem. Moreover, it confers a certain social status. For the participants in this study the kind of work involved, whether productive, paid and ‘extra‐domestic’ or ‘reproductive’, unpaid and done at home, acquires different meanings, since for disabled women, sexist stereotypes – already more or less accentuated in the culture – social attitudes towards disability and personal factors introduce relevant differences, while leading to conflicts and dilemmas that these women have to solve. At any rate, their sense of responsibility in performing all types of work should be emphasised as evidence of their sense of independence and personal competence, forming a keystone in their construction of a sense of identity and social integration. 相似文献
108.
Jody Heymann Francisco Flores-Macias Jeffrey A. Hayes Malinda Kennedy Claudia Lahaie Alison Earle 《Community, Work & Family》2009,12(1):91-103
We present results from a new study of the effects of migration to the USA on the well-being of transnational families in high emigration communities within Mexico. Our survey measured the well-being of family members in a variety of domains: economic, health, education, and child development for a representative sample drawn from high migration municipalities. Compared to those with no recent emigrants to the USA, Mexican households sending non-caregivers to the USA appear to gain economically without contributing to problems faced by children. However, when family caregivers migrate to the USA, the remaining members in Mexico struggle to meet the family's needs and children are more vulnerable to educational, emotional, and health problems. Children in households where a caregiver migrated were more likely to have frequent illnesses (10% vs. 3%, p<0.0001), chronic illness (7% vs. 3%, p=0.011), emotional problems (10% vs. 4%, p=0.006), and behavioral problems (17% vs. 10%, p=0.018) compared with children in households where the migrant was not a caregiver. Research, policy, and program implications of these findings are discussed. 相似文献
109.
Transfer Pricing in Transition Economies: Evidence from Ukraine 总被引:1,自引:1,他引:0
Faced with possibilities and challenges of doing business under different regulatory regimes, transnational corporations have
developed a number of transfer mechanisms to take advantage of profit maximization opportunities. Transfer pricing is a transfer
mechanism widely used by transnational corporations. Implications of transfer pricing for profitability and the need for transfer
pricing regulation are well understood by national governments, which is reflected in the fact that more than 60 governments
have introduced some form of transfer pricing controls. Transfer pricing is a challenging issue for transition economies as
their transfer pricing regulatory systems are less mature than those of developed countries. The authors have initiated an
empirical study on transfer pricing strategies in the Ukrainian market. In addition, the national regulatory regime for transfer
pricing was evaluated compared to international best practices. This article is an attempt to draw attention of the research
community and Ukrainian policy-makers to transfer pricing issues in Ukraine.
相似文献
110.
长期以来,约旦穆斯林兄弟会与政府保持着良好的合作关系。穆斯林兄弟会不仅未受政府的压制,反而处于上升的态势。这有别于埃及和其他国家穆斯林兄弟会与政府之间纷繁多变的关系,这种合作关系在整个中东地区的伊斯兰运动中都是罕见的。鉴于此,本文拟就约旦穆兄会与政府的关系作一论述。 相似文献