343 research outputs found

    Equity in Access to Secondary Education in Kenya

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    The Constitution promulgated on August 27, 2010 divides the territory of Kenya into administrative units called counties as it did away with the provinces. One of the objectives of such devolution is to promote social and economic development as well as the provision of proximate and easily accessible services, including education, throughout the country. Among others, the Constitution holds that every child has the right to free and compulsory basic education. However, historically, there has been uneven distribution of schools right from the pre-colonial, colonial period up to now. This disparity in the distribution of schools in regions has far reaching implications not only with regard to  equity in access,  but also quality that depended highly on the type of school, especially at the secondary level. This scenario is strikingly similar to the defunct provinces where a number of them had fewer and poorly equipped secondary schools as compared to their share of the population. Thus there is a daunting task in the planning of education in the country’s 47 counties. The purpose of this paper therefore, is to critically examine the provision of secondary education in Kenya,  with specific reference to equity in access, in the wake of the devolved county units as well as explore the prospects in a bid  to facilitate its successful implementation. During the critical examination, the distribution of secondary schools in general, and the national ones in particular,  in the country is discussed in a historical perspective. Particularly, this approach will  assist not only in bringing out the stark disparities in the provision of secondary education in the country, but also help in formulating policy suggestions to attempt and surmount the attendant challenges. Key words:  Access, County, Equity, Secondary Education

    Assessment of Institutional and Personnel-Related Challenges Facing Educational Programme for the Mentally Challenged Persons at Kaimosi Special School, Kenya

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    The Mentally Challenged child (MC) can achieve a lot if the right environment and curriculum are designed for him/her. However, the realization of the desirable outcomes faces many challenges. The objective of the study was to examine institutional and personnel-related challenges facing education programs for the MC persons at Kaimosi Special School. The study adopted a descriptive survey design. The theoretical framework was based on Context, Input and Process Product Approach (CIPP) model of evaluation. Stratified sampling, purposive sampling and simple random sampling techniques were used to come up with the sample size. A total of 22 participants were selected comprising of one education officer, 3 administrators (2 male and 1 female), 8 teachers (5 female and 3 male) and 10 care givers. Questionnaires, interview schedules and document analysis were used to collect data. The study established that heavy workload, lack of motivation, poor staffing, high levels of stress, overcrowding in class, tiny classrooms, and inadequate resources were the most serious challenges facing Kaimosi Special School. It was recommended that the Special Education Department in the Ministry of Education should be strengthened with additional resources and trained personnel to handle issues of special education. There is need to engage all stakeholders in order to ensure that there are sustained efforts to provide quality programs for the mentally challenged. Keywords: Mentally challenged, Special educatio

    Preparation and Characterization of Tin Oxide Thin Films

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    Tin oxide (SnO) thin films were prepared onto glass substrates by thermal evaporation under vacuum. The substrate temperature was kept constant at 300 K during the film growth. The structural studies using transmission electron microscopy (TEM) analysis showed that the SnO thin films have a polycrystalline and tetragonal crystal structure with preferential orientation of (110) planes parallel to the substrate. Optical transmission and reflection spectra, at normal incidence, in the spectral range 300-1100 nm, are investigated. The optical properties of SnO thin films were determined. The optical energy band gap, Eg, has been estimated from the absorption coefficient values using Tauc’s procedure. It is found that the SnO thin films exhibit direct band gap

    Polyomavirus Nephropathy: Ten-Year Experience

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    BACKGROUND: Polyomavirus nephropathy (BKVN) is an important cause of chronic allograft dysfunction (CAD). Recipient determinants (male sex, white race, and older age), deceased donation, high-dose immunosuppression, diabetes, delayed graft function (DGF), cytomegalovirus infection, and acute rejection (AR) are risk factors. Reducing immunosuppression is the best strategy in BKVN. The objective of our study was to evaluate CAD progression after therapeutic strategies in BKVN and risk factors for graft loss (GL). METHODS: Retrospective analysis of 23 biopsies, from patients with CAD and histological evidence of BKVN, conducted over a period of 10 years. Glomerular filtration rate was <30 mL/min in 16 patients at the time of the BKVN diagnosis. RESULTS: BKVN was histologically diagnosed in 23 recipients (19 men, 4 women). All patients were white, with age of 51.2 ± 12.1 years (6 patients, age >60 years), and 22 had a deceased donor. Diabetes affected 4 patients, DGF occurred in 3, cytomegalovirus infection in 2, and AR in 15. All patients were medicated with calcineurin inhibitors (CNI) (95.7% tacrolimus) and corticoids, and 16 also received an antimetabolite. One year after antimetabolite reduction/discontinuation and/or CNI reduction/switching and/or antiviral agents, graft function was decreased in 11 patients, increased/stabilized in 10, and unknown in 2. GL occurred in 9 patients. Older age (hazard ratio, 1.76; 95% confidence interval, 0.94-3.28) and DGF (hazard ratio, 2.60; 95% confidence interval, 0.54-12.64) were the main risk factors for GL. The lower GFR at the time of the BKVN diagnosis was associated with an increased risk of initiation of dialysis. CONCLUSIONS: GL occurred in 39.1% of patients with BKVN and DGF; older age and lower GFR at the time of diagnosis were important risk factors. Early diagnosis of BKVN is essential to prevent GL.info:eu-repo/semantics/publishedVersio

    A proposal for a coordinated effort for the determination of brainwide neuroanatomical connectivity in model organisms at a mesoscopic scale

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    In this era of complete genomes, our knowledge of neuroanatomical circuitry remains surprisingly sparse. Such knowledge is however critical both for basic and clinical research into brain function. Here we advocate for a concerted effort to fill this gap, through systematic, experimental mapping of neural circuits at a mesoscopic scale of resolution suitable for comprehensive, brain-wide coverage, using injections of tracers or viral vectors. We detail the scientific and medical rationale and briefly review existing knowledge and experimental techniques. We define a set of desiderata, including brain-wide coverage; validated and extensible experimental techniques suitable for standardization and automation; centralized, open access data repository; compatibility with existing resources, and tractability with current informatics technology. We discuss a hypothetical but tractable plan for mouse, additional efforts for the macaque, and technique development for human. We estimate that the mouse connectivity project could be completed within five years with a comparatively modest budget.Comment: 41 page

    Relationships between Gene Expression and Brain Wiring in the Adult Rodent Brain

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    We studied the global relationship between gene expression and neuroanatomical connectivity in the adult rodent brain. We utilized a large data set of the rat brain “connectome” from the Brain Architecture Management System (942 brain regions and over 5000 connections) and used statistical approaches to relate the data to the gene expression signatures of 17,530 genes in 142 anatomical regions from the Allen Brain Atlas. Our analysis shows that adult gene expression signatures have a statistically significant relationship to connectivity. In particular, brain regions that have similar expression profiles tend to have similar connectivity profiles, and this effect is not entirely attributable to spatial correlations. In addition, brain regions which are connected have more similar expression patterns. Using a simple optimization approach, we identified a set of genes most correlated with neuroanatomical connectivity, and find that this set is enriched for genes involved in neuronal development and axon guidance. A number of the genes have been implicated in neurodevelopmental disorders such as autistic spectrum disorder. Our results have the potential to shed light on the role of gene expression patterns in influencing neuronal activity and connectivity, with potential applications to our understanding of brain disorders. Supplementary data are available at http://www.chibi.ubc.ca/ABAMS

    Secondary fibrosarcoma of the brain stem treated with cyclophosphamide and Imatinib

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    Radiation-induced midbrain fibrosarcoma is a rare, highly aggressive tumor, which is associated with poor prognosis. We present the case of a 48-year old man with brainstem fibrosarcoma 20 years following radiation therapy received for a pituitary tumor. We discuss this case in the context of the diagnostic criteria for these tumors, and previous reports of secondary and primary sarcomas of the central nervous system

    Possible Existence of Lysosome-Like Organella within Mitochondria and Its Role in Mitochondrial Quality Control

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    The accumulation of unhealthy mitochondria results in mitochondrial dysfunction, which has been implicated in aging, cancer, and a variety of degenerative diseases. However, the mechanism by which mitochondrial quality is regulated remains unclear. Here, we show that Mieap, a novel p53-inducible protein, induces intramitochondrial lysosome-like organella that plays a critical role in mitochondrial quality control. Mieap expression is directly regulated by p53 and is frequently lost in human cancer as result of DNA methylation. Mieap dramatically induces the accumulation of lysosomal proteins within mitochondria and mitochondrial acidic condition without destroying the mitochondrial structure (designated MALM, for Mieap-induced accumulation of lysosome-like organelles within mitochondria) in response to mitochondrial damage. MALM was not related to canonical autophagy. MALM is involved in the degradation of oxidized mitochondrial proteins, leading to increased ATP synthesis and decreased reactive oxygen species generation. These results suggest that Mieap induces intramitochondrial lysosome-like organella that plays a critical role in mitochondrial quality control by eliminating oxidized mitochondrial proteins. Cancer cells might accumulate unhealthy mitochondria due to p53 mutations and/or Mieap methylation, representing a potential cause of the Warburg effect
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