2,453 research outputs found

    Spatial Patterns Associating Low Birth Weight with Environmental and Behavioral Factors

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    Low birth weight (LBW) is a significant public health problem in the world. It was estimated globally by the World Health Organization (WHO) that prevalence of LBW was 15% of all births. In Murung Raya district LBW cases remain high. This paper aimed to identify and discuss the relationship between environmental risk factors with LBW in Murung Raya.A spatial analysis was conducted with 150 women as the total participantswho were recruited through the incidence data in 2013-2014. The questionnaires, medical records, and geographic data were measured by Stata software, ArcGis, SatScan, and Geoda. The study results indicated there was significant correlation between health behavior and environmental variables with the strength of external neighborhood effect across LBW risk factors. More intense clustering of high values (hot spots) was found through the spatial analysis showing that most of the cases were located near the defined buffer zone. This research demonstrates that the spatial pattern analysis provided greater statistical power to detect an effect that was not apparent in the previous epidemiology studies

    The relationship between nurses' clinical competency and job stress in Ahvaz university hospital, 2013

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    زمینه و هدف: صلاحیت بالینی پرستاری، شایستگی کاربرد همزمان دانش، مهارت، نگرش ها و ارزش ها در مراقبت از بیمار است که به دلیل اهمیت آن اخیراً مورد توجه بیشتری قرار گرفته است. با توجه به اهمیت روز افزون موضوع صلاحیت پرستاری، شناخت عوامل مرتبط با آن و از جمله استرس شغلی ضروری به نظر می رسد؛ لذا مطالعه حاضر با هدف تعیین رابطه صلاحیت بالینی و استرس شغلی پرستاران شاغل در بیمارستان های دانشگاهی شهر اهواز در سال1392 انجام شد. روش بررسی: در این پژوهش توصیفی- تحلیلی که به صورت مقطعی در طی سال 1392 انجام شد، 80 نفر پرستار شاغل در بیمارستان های آموزشی شهر اهواز از طریق نمونه گیری تصادفی انتخاب و وارد مظالعه شدند. ابزار گردآوری داده ها شامل پرسشنامه های استرس شغلی Osipow و پرسشنامه صلاحیت بالینی Benner بود که به صورت خود ایفاء تکمیل گردیدند. میزان صلاحیت بالینی پرستاران ارزیابی و ارتباط آن با استرس شغلی تعیین شد. یافته ها: بیشتر پرستاران (3/81 درصد) دارای استرس شغلی متوسط بودند. میانگین نمره کل صلاحیت بالینی پرستاران 48/18± 15/61 بود. آزمون همبستگی پیرسون نشان داد که بین استرس شغلی و صلاحیت بالینی پرستاران در تمام حیطه های آن همبستگی منفی و معنی داری وجود دارد (01/0>P). همچنین بین میزان استرس شغلی و بکارگیری صلاحیت بالینی کل ارتباط معنی داری وجود داشت (001/0>P). نتیجه گیری: بر اساس نتایج مطالعه حاضر، افزایش استرس شغلی پرستاران با کاهش صلاحیت های بالینی آنها رابطه دارد که بایستی مورد توجه مدیران پرستاری قرار گیرد

    Pengaruh Faktor Pribadi dan Faktor Psikologis terhadap Keputusan Pembelian Konsumen di Kentucky Fried Chicken (Kfc) Singaraja

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    Penelitian ini bertujuan untuk mengetahui (1) pengaruh faktor pribadi terhadap keputusan pembelian konsumen di KFC Singaraja, (2) pengaruh faktor psikologis terhadap keputusan pembelian konsumen di KFC Singaraja, (3) pengaruh faktor pribadi dan faktor psikologis terhadap keputusan pembelian konsumen di KFC Singaraja, (4) besarnya pengaruh faktor pribadi dan faktor psikologis terhadap keputusan pembelian konsumen di KFC Singaraja. Jenis penelitian ini adalah penelitian kausal. Populasi dalam penelitian ini adalah konsumen yang telah membeli produk KFC Singaraja dengan jumlah sampel sebanyak 96 orang. Pemilihan sampel dilakukan secara acak dengan menggunakan metode acedental sampling. Data dikumpulkan dengan mengunakan metode kuesioner yang dianalisis dengan menggunakan analisis regresi linier berganda dengan bantuan program SPSS for windows 17.0 yang meliputi uji-t, uji F, dan koefesien determinasi. Hasil penelitian menunjukkan bahwa; (1) faktor pribadi berpengaruh terhadap keputusan pembelian konsumen di KFC Singaraja, hal tersebut ditunjukan dari nilai thitung = 4.501 > ttabel = 2,000 atau p-value = 0,000 ttabel = 2,000 atau p-value = 0,000 Ftabel = 3,11 atau p-value = 0,000 ttable = 2,000 or p-value = 0,000 ttable = 2,000 or p-value = 0,000 Ftable = 3,11or p-value = 0,000 Copyrights © 2015 Copyrights © 2015 </div

    Dust-Charge Variation Effects on Dust ion Acoustic Shock Waves in Four Component Quantum Plasma

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    The behavior of nonlinear quantum dust ion acoustic (QDIA) shock waves in a collisionless, unmagnetized plasma consisting of inertialess quantum electrons and positrons, classical cold ions and stationary negatively charged dust grains with dust charge variation is investigated using quantum hydrodynamic (QHD) equations. The propagation of small amplitude QDIA shock waves is governed by Burgers equation. It is shown that the dust charge variation plays an important role in the formation of such QDIA shock structures. The dependence of the shock waves amplitude and thickness on the chemical potential is investigated. The present theory is applicable to analyze the formation of nonlinear structures at quantum scales in dense astrophysical objects

    Screening vaccine formulations for biological activity using fresh human whole blood.

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    Understanding the relevant biological activity of any pharmaceutical formulation destined for human use is crucial. For vaccine-based formulations, activity must reflect the expected immune response, while for non-vaccine therapeutic agents, such as monoclonal antibodies, a lack of immune response to the formulation is desired. During early formulation development, various biochemical and biophysical characteristics can be monitored in a high-throughput screening (HTS) format. However, it remains impractical and arguably unethical to screen samples in this way for immunological functionality in animal models. Furthermore, data for immunological functionality lag formulation design by months, making it cumbersome to relate back to formulations in real-time. It is also likely that animal testing may not accurately reflect the response in humans. For a more effective formulation screen, a human whole blood (hWB) approach can be used to assess immunological functionality. The functional activity relates directly to the human immune response to a complete formulation (adjuvant/antigen) and includes adjuvant response, antigen response, adjuvant-modulated antigen response, stability, and potentially safety. The following commentary discusses the hWB approach as a valuable new tool to de-risk manufacture, formulation design, and clinical progression

    Evolution of microstructural and mechanical properties of nanocrystalline Co2FeAl Heusler alloy prepared by mechanical alloying

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    Mechanical alloying (MA) has been used to fabricate the Co2FeAl Heusler alloy with a nanocrystalline structure. The formation mechanism of the alloy has been investigated. Rietveld analysis showed that all samples that were milled for more than 15 hours had an L21 structure with a space group of Fm3m. The crystallite size and internal strain of the samples were calculated using the Williamson-Hall equation. With mechanical alloying of up to 20 hours the crystallite size of Co2FeAl increased, after which the crystallite size started to decrease. In contrast, internal strain first decreased during the process and then increased with the increase of milling time. The powder obtained after 20 hours of MA was split into three parts and separately annealed at 300, 500 and 700 oC for 5 hours. A considerable increase was observed in the hardness value of powder particles with the increase of annealing temperature up to 500 oC. However, the hardness value of the sample annealed at 700 oC decreased. It seems that this feature is related to parameters such as increase of crystallite size, enhancement of lattice ordering, change in density of defects and impurities and nonstoichiometric effects

    A Flow Based Horizontal Scan Detection Using Genetic Algorithm Approach

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    Abstract: An attacker has to &quot;scan&quot; susceptible points of a network before attacking. There are several methods of detection of such behavior which are mostly based on thresholding. As the performance of these methods is highly dependent on the value of threshold, it is crucial to adjust this value appropriately. This adjustment is not always trivial. In this study we proposed a new method to optimize the parameters of the system using genetic algorithms (GA) based on network flows. Subsequently we compared our method with Snort. The results showed a superior performance as measured by the sensitivity index of d&quot;
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