نتایج جستجو برای: parental trees

تعداد نتایج: 141668  

احمدی, اکرم, باده یان, ضیاءالدین, بارانی بیرانوند, زینب, مهدی کرمی, شهرام,

The formation of gall is one of the various types of vegetarianism, and gall producing insects cause stress in their hosts. The present study aimed to investigate the changes of some biochemical and photosynthetic indices due to the gall in Persian oak trees in Forests of Middle Zagros. Sampling was performed from trees infected by gall and healthy trees in Blouran forests. The results showed t...

2009
Anh T. Le

The failure or success of students at school can have important impacts on their future studies and labour market outcomes. Furthermore, school performance of the children of immigrants can inform on their adjustment or disadvantage (if any) in the country of destination. This paper examines the tertiary entrance scores of children with migrant parents (firstand second-generations Australians) ...

2015
Eva Ringler Andrius Pašukonis W. Tecumseh Fitch Ludwig Huber Walter Hödl Max Ringler

Parental care systems are shaped by costs and benefits to each sex of investing into current versus future progeny. Flexible compensatory parental care is mainly known in biparental species, particularly where parental desertion or reduction of care by 1 parent is common. The other parent can then compensate this loss by either switching parental roles and/or by increasing its own parental effo...

2008

We address the relationship between family policies and fertility in Norway, including three somewhat different policies: parental leave, formal childcare, and the childcare cash benefit. Norwegian family policy has been considered dualistic, giving priority to both dual-earner support and general family support. Our data are administrative register data covering the period 1995–2002. The analy...

2008
Helena Holmlund Mikael Lindahl Erik Plug

We review the empirical literature that estimates the causal effect of parent’s schooling on child’s schooling, and conclude that estimates differ across studies. We then consider three explanations for why this is: (a) idiosyncratic differences in data sets; (b) differences in remaining biases between different identification strategies; and (c) differences across identification strategies in ...

2016
Petar Petrović

The aim of the study was to investigate the relationship between parental dimensions, estimated by children and problematic Internet use among young adolescents. The study also examined the relationship between parental control of their children's online activities and problematic Internet use. For this purpose, 218 eighth and ninth graders completed a questionnaire composed of general data and...

2005
Jack Arbuthnot Donald A. Gordon

In a court-mandated, child-focused class for divorcing parents, parental mastery of skills taught were evaluated both immediately after the class and 6 months later Parents perceived the classes 10 be realistic and uspful. Skills were effectively learned and were maintained over the evaluation period. Parents reported that they were successful in dramatically lowering exposure of their children...

Journal: :British journal of preventive & social medicine 1969
J Birtchnell

Parent death occurring in childhood is an event which may have serious psychological consequences (Birtchnell, 1969a and b). Even during adult life it may be followed by a period of instability and increased vulnerability to mental breakdown (Birtchnell, 1969c and d). There are considerable problems in attempting to establish a relationship between parent death and ensuing psychiatric illness, ...

Journal: :Journal of public health policy 2010
Anna Månsdotter Peeter Fredlund Johan Hallqvist Cecilia Magnusson

Progress towards gender equality involves changes in the traditional parental division - female caring and male breadwinning. One aspect is increased parental leave for fathers, which may benefit the health of mothers, children, and fathers themselves. We examined how social and health characteristics (2002) were associated with paternity leave in excess of the 'father quota' of 60 days (2003-2...

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