Respostas ecofisiológicas e morfológicas do pau-rosa (Aniba rosaeodora Ducke) aos diferentes níveis de sombreamento, em condição de viveiro.

Publicado também em: Boletim da Faculdade de Ciências Agrárias do Pará, Belém, PA, n. 30, p. 119-132, jul./dez. 1998

Non-Essential Training Partnerships and the Future of Employees

While non-essential training is rapidly gaining traction around the world, there are few studies and no good theory when it comes to non-essential training appearance in the literature. With the goal of bringing it on par with the required training. As a result of systematic literature evaluation, this paper aims to identify elements that, as well as theoretical gaps, and make recommendations for future research that affect employee participation in non-essential training programs

Performance analysis of beacon-less IEEE 802.15.4 multi-hop networks

We develop an approximate analytical technique for evaluating the performance of multi-hop networks based on beacon-less CSMA/CA as standardised in IEEE 802.15.4, a popular standard for wireless sensor networks. The network comprises sensor nodes, which generate measurement packets, and relay nodes which only forward packets. We consider a detailed stochastic process at each node, and analyse this process taking into account the interaction with neighbouring nodes via certain unknown variables (e.g., channel sensing rates, collision probabilities, etc.). By coupling these analyses of the various nodes, we obtain fixed point equations that can be solved numerically to obtain the unknown variables, thereby yielding approximations of time average performance measures, such as packet discard probabilities and average queueing delays. Different analyses arise for networks with no hidden nodes and networks with hidden nodes. We apply this approach to the performance analysis of tree networks rooted at a data sink. Finally, we provide a validation of our analysis technique against simulations

Anxiety and depression in parents of children and adolescents with intellectual disability

Background: Parents of the children and adolescents with intellectual disability (ID) are prone to psychological distress than as compared to parents of normally developing children and adolescents. Various biopsychosocial factors affect the perception and manifestation of this stress and influences difference in quality and severity in psychological outcomes. When a couple faces stress of caregiving as a unit, it is worthwhile to know and assess distribution pattern amongst the primary care giver and the other parent. Aim: The aim of the study is to evaluate the proportional distribution of depression and anxiety in primary care giver and the other parent in parents of children and adolescents with ID. Materials and Methods: Using a Cross-sectional observational study design, 99 parents (99 fathers and 98 mothers) of 99 children and adolescents (up to 18 yrs of age) with Intellectual Disability were assessed for Depressive and Anxiety symptoms using Hospital Anxiety and Depression Scale (HADS). Comparison of proportional distribution of psychiatric morbidity among fathers and mothers (primary care giver) was done using 2 independent sample proportion tests. Results: The mothers were found to be the primary care givers. 35.4% of fathers and 66.3% of mothers had significant depressive symptoms. 57.6% of fathers and 91.8% of mothers had significant anxiety symptoms. In 33 couples, fathers did not report anxiety or depressive symptoms but corresponding 27 mothers reported significant anxiety or depressive symptoms or both. In rest of the couples in whom fathers reported anxiety and/or depressive symptoms, the corresponding mothers also reported. In six couples where mothers did not report anxiety or depression, the fathers also did not report any anxiety or depressive symptoms. Conclusion: Depressive and Anxiety symptoms are very prevalent in parents of children with ID. Their proportion is significantly high in primary care giver (mother) as comparedto corresponding other parent (father). There is unequal distribution of anxiety and depression in these parents with a skew towards mother