Back ground: Knowledge about the causes of death in children is important to evaluate health system progress and provide what is needed for an efficient design of health care delivery system. Objective: To find out the main causes of death in children under 5years & evaluate the effects of different variables like: age, gender, body weight, residency, and months of year for the causes of death. Patient& Method: This is a retrospective study which was carried out in order to find out the main causes of death among admitted children younger than 5 year in Sulaymani Pediatrics Teaching Hospital for the period of 5 years from of January 1st 2001 to December 31st 2005 included. The total numbers of admitted cases was 137,739 out of which 1455 had died. We obtained the information from case files of the deceased patients. Results: The incidence of death among admitted patients was (1.06%), the rate was higher in male gender (59.3%), while in female it was (40.7 %), with a P-value of <0.05 which is significant statistically with male to female ratio 1.48:1. Deaths were mainly in neonates (61.8 % of all age groups in the study) with a p-value of <0.05. Death was mainly in those with body weights <2.5kg, which accounts for (42.1%). The main cause of death in neonate was prematurity (54.7%) while diarrhea and Acute Respiratory Infections (ARI) were main causes during infancy (57.4%, 15.9%) respectively. Seasonal variation of died cases showed that were two peaks of death, one in June and another in November with a p-value of <0.05. The percentage of death in the rural and urban area were (64.5%, 35.5 %) respectively, with a p-value of <0.05 which is also significant. Conclusion: This study has revealed that prematurity was the main cause of death among neonate while diarrhea and acute respiratory diseases were the main causes of death during infancy. Malignancy was the least common cause of death. Deaths were mainly in neonates. There was a significant association between deaths and gender, body weight, residency& the months of the year. Key words: mortality rate, death cause, children under five.
This paper aims to decide the best parameter estimation methods for the parameters of the Gumbel type-I distribution under the type-II censorship scheme. For this purpose, classical and Bayesian parameter estimation procedures are considered. The maximum likelihood estimators are used for the classical parameter estimation procedure. The asymptotic distributions of these estimators are also derived. It is not possible to obtain explicit solutions of Bayesian estimators. Therefore, Markov Chain Monte Carlo, and Lindley techniques are taken into account to estimate the unknown parameters. In Bayesian analysis, it is very important to determine an appropriate combination of a prior distribution and a loss function. Therefore, two different
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Static loads exposing to mechanical components can cause cracks, which are lead to form stress concentration regions causing the failure of structure. Generally, from 80% to 90% of structure failure is due to initiation of the cracks. Therefore, it is necessary to repair the crack and reduce its effect on the structure where the effect of the crack is modelled as an additional flexibility to the structure. In the last few years, piezoelectric materials have been considered as one of the most favourable repairing techniques. The piezoelectric material converts the applied voltage on it to a bending moment to counter the bending moment caused by the external load on the beam at the crack location. In this study, the design of the piez
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In this study, the effect of glass fiber reinforced polymer (GFRP) section and compressive strength of concrete in composite beams under static and low velocity impact loads was examined. Modeling was performed and the obtained results were compared with the test results and their compatibility was evaluated. Experimental tests of four composite beams were carried out, where two of them are control specimen with 20 MPa compressive strength of concrete deck slab and 50 MPa for other. Bending characteristics were affected by the strength of concrete under impact loading case, as it increased maximum impact force and damping time at a ratio of 59% and reduced the damping ratio by 47% compared to the reference hybrid beam. Under stat
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An experimental investigation has been made to study the influence of using v-corrugated aluminum fin on heat transfer coefficient and heat dissipation in a heat sink. The geometry of fin is changed to investigate their performance. 27 circular perforations with 1 cm diameter were made. The holes designed into two ways, inline arrangement and staggered in the corrugated edges arrangement. The experiments were done in enclosure space under natural convection. Three different voltages supplied to the heat sink to study their effects on the fins performance. All the studied cases are compared with v-corrugated smooth solid fin. Each experiment was repeated two times to reduce the error and the data recorded after reaching t
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In this research, experimental and numerical studies were carried out to investigate the performance of encased glass-fiber-reinforced polymer (GFRP) beams under fire. The test specimens were divided into two peer groups to be tested under the effect of ambient and elevated temperatures. The first group was statically tested to investigate the monotonic behavior of the specimens. The second group was exposed to fire loading first and then statically tested to explore the residual behavior of the burned specimens. Adding shear connectors and web stiffeners to the GFRP beam was the main parameter in this investigation. Moreover, service loads were applied to the tested beams during the fire. Utilizing shear connectors, web stiffeners,
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In this research, experimental and numerical studies were carried out to investigate the performance of encased glass-fiber-reinforced polymer (GFRP) beams under fire. The test specimens were divided into two peer groups to be tested under the effect of ambient and elevated temperatures. The first group was statically tested to investigate the monotonic behavior of the specimens. The second group was exposed to fire loading first and then statically tested to explore the residual behavior of the burned specimens. Adding shear connectors and web stiffeners to the GFRP beam was the main parameter in this investigation. Moreover, service loads were applied to the tested beams during the fire. Utilizing shear connectors, web stiffeners,
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