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The rapid urbanization and industrialization involve an unsustainable use of natural systems,leading to various problems in cities.The urban hydrological system experiences fluctuating amount of surfac... 相似文献
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Masud Mansuripur 《Resonance》2013,18(2):130-155
A close examination of the Maxwell-Lorentz theory of electrodynamics reveals that polarization and magnetization of material media need not be treated as local averages over small volumes — volumes that nevertheless contain a large number of electric and/or magnetic dipoles. Indeed, Maxwell’s macroscopic equations are exact and self-consistent mathematical relations between electromagnetic fields and their sources, which consist of free charge, free current, polarization, and magnetization. When necessary, the discrete nature of the constituents of matter and the granularity of material media can be handled with the aid of special functions, such as Dirac’s delta-function. The energy of the electromagnetic field and the exchange of this energy with material media are treated with a single postulate that establishes the Poynting vector S = E × H as the rate of flow of electromagnetic energy under all circumstances. Similarly, the linear and angular momentum densities of the fields are simple functions of the Poynting vector that can be unambiguously evaluated at all points in space and time, irrespective of the type of material media, if any, that might reside at various locations. Finally, we examine the Einstein-Laub force- and torque-density equations, and point out the consistency of these equations with the preceding postulates, with the conservation laws, and with the special theory of relativity. The set of postulates thus obtained constitutes a foundation for the classical theory of electrodynamics. 相似文献
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Masud Ahmmed Umesh Sharma Joanne Deppeler 《Journal of Research in Special Educational Needs》2012,12(3):132-140
Inclusive education is a worldwide reform strategy intended to include students with different abilities in mainstream regular schools. Evidence from previous research shows that success in implementing effective inclusive teaching practices in the school is contingent on teachers' positive attitudes towards inclusive education. This study was conducted in the context of primary education in Bangladesh aiming to examine variables influencing teachers' attitudes towards inclusion of students with disabilities in regular classrooms. Data for the study was collected from 738 teachers working in 293 government primary schools in Bangladesh. The results indicated that perceived school support for inclusive teaching practices and a range of demographic variables including previous success in teaching students with disabilities and contact with a student with a disability were associated with more positive attitudes of the teachers towards the inclusive education. The results are discussed with possible implications for educators, policy‐makers and international organisations working on the implementation of inclusive education. 相似文献
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Hamid Masud Muhammad Shakil Ahmad Farzand Ali Jan Ahmad Jamil 《Asia Pacific Education Review》2016,17(1):121-131
The literature supports the importance of parenting styles that are necessary to fulfill the developmental needs of the children and eventually improve their quality of life. Baumrind’s typology of parenting styles was used. There are many studies that examined the relationship of parenting styles (authoritative, authoritarian and permissive parenting styles) and academic performance, but there is lack of measurement of the relationship with respect to Pakistan. Current study analyzed the relationship of parenting styles and academic performance along with self-efficacy as mediating variable. Sample of the study consists of 313 university students from four academic departments. Measures included the parenting styles and self-efficacy. GPA was taken as a measure of academic performance of adolescents. Self-reported questionnaire was used to take the response from students. With the help of structural equation modeling, structural model was tested. Results of the study indicate that parenting styles individually have no significant relationship with the academic performance. In addition to this, self-efficacy only mediates the relationship of authoritative parenting style and academic performance. It can be concluded that self-efficacy in individuals is an important attribute necessary for the psychological development of the adolescents. Self-efficacy enhances the individual’s confidence to progress. There is a need to conduct more research on the relationship of parenting styles and academic performance in Pakistan. Implications for parents, teachers, are discussed. 相似文献
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Masud Ahmmed 《Asia Pacific Education Review》2013,14(3):337-344
International studies have identified that teachers require adequate support, including human and material resources, if they are to successfully implement inclusive education (IE) in regular classes. Past research shows that the level of support teachers feel they are receiving, from members of the school community and in the provision of appropriate teaching resources and training, may influence their attitudes towards IE and their willingness to undertake IE. Conceptualizing perceived school support as a subjective norm within the theory of planned behaviour, a context-specific, ‘Perceived School Support for Inclusive Education’ (PSSIE) scale was developed to measure teachers’ perceptions of support. This paper reports the development process of the PSSIE scale which included item generation, content validation and statistical procedures. Using a four-stage sampling method, a sample of 1,387 primary school teachers from the Dhaka Division of Bangladesh was selected for this study. The results provide preliminary evidence that the PSSIE (with eight items) meets the standards for reliability and, thus, presents as a useful scale by which to measure teachers’ perceptions of school support for implementing IE. The paper also illustrates limitations and direction for further studies. 相似文献
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Continued discrimination towards, and exclusion of, children with special needs, combined with the high dropout rate of students from socio-economically disadvantaged backgrounds, creates considerable pressure on the inclusive education (IE) reform initiatives of developing countries. To minimise the challenges to implementing IE reform policies into classroom level practices, education systems need to apply strategies which are contextually useful. Bangladesh has introduced a number of policies and acts to support IE reform in regular schools. In the past, there were few and limited empirical studies in the context of primary education, which focus on IE. Recently, a number of studies conducted in Bangladesh have identified some contextual issues underpinning IE implementation. This paper reports on three such doctoral studies that investigated issues related to the implementation of IE policy in primary schools in Bangladesh. This paper focuses on the implications of the major findings of those studies. It is expected that the contextual evidence and implications of the findings will help primary education development programmes implement IE policy more successfully. 相似文献
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Christiane Perme Theresa Nalty Chris Winkelman Ricardo Kenji Nawa Faisal Masud 《Cardiopulmonary Physical Therapy Journal》2013,24(2):12-17
Introduction
There are limited data describing mobility interventions provided to patients with femoral catheters. The purpose of this study was to examine the incidence of femoral catheter related adverse effects during physical therapy (PT) sessions in a cardiovascular intensive care unit (ICU).Methods
This was a prospective, observational study and included patients with at least one femoral catheter. Data were collected after each PT session.Results
There were 77 subjects with a total of 92 femoral catheters (50 arterial, 15 central venous, and 27 dialysis) treated. A total of 210 separate PT sessions occurred with 630 mobility activities including sitting on side of bed, standing at the bedside, transfers to stretcher chair or regular chair, and walking. There were no catheter related mechanical or thrombotic complications during any of the PT sessions.Conclusions
Physical therapy sessions, including standing and walking were feasible and safe in cardiovascular ICU patients with femoral catheters who met the criteria for mobility interventions. The results from this study support the hypothesis that early mobilization in patients with femoral catheters is important to minimize functional decline and provide evidence that the presence of femoral catheters alone should not be a reason to limit progressive mobility interventions.Key Words: physical therapy, ICU, early mobilization, femoral catheter 相似文献
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