11,452,745 research outputs found
A Comparison of some recent Task-based Parallel Programming Models
The need for parallel programming models that are simple to use and at the same time efficient for current ant future parallel platforms has led to recent attention to task-based models such as Cilk++, Intel TBB and the task concept in OpenMP version 3.0. The choice of model and implementation can have a major impact on the final performance and in order to understand some of the trade-offs we have made a quantitative study comparing four implementations of OpenMP (gcc, Intel icc, Sun studio and the research compiler Mercurium/nanos mcc), Cilk++ and Wool, a high-performance task-based library developed at SICS.
Abstract. We use microbenchmarks to characterize costs for task-creation and stealing and the Barcelona OpenMP Tasks Suite for characterizing application performance. By far Wool and Cilk++ have the lowest overhead in both spawning and stealing tasks. This is reflected in application performance when many tasks with small granularity are spawned where Cilk++ and, in particular, has the highest performance. For coarse granularity applications, the OpenMP implementations have quite similar performance as the more light-weight Cilk++ and Wool except for one application where mcc is superior thanks to a superior task scheduler.
Abstract. The OpenMP implemenations are generally not yet ready for use when the task granularity becomes very small. There is no inherent reason for this, so we expect future implementations of OpenMP to focus on this issue
Comparison of Efficiencies of Neurological Physical Examination, Neurothesiometer and PainDETECT Questionnaire in Diagnosing Diabetic Neuropathy
Objective: To compare the efficacies of neurological physical examination, neurothesiometer and PainDETECT questionnaire in diagnosing diabetic neuropathy.
Study Design: Prospective cross-sectional
Place and Duration of Study: Department of General Medicine, Nishtar Hospital Multan, Pakistan from 1st December 2018 to 10th March 2019.
Materials and Methods: One hundred and four patients of both type 1 and type 2 diabetes visiting the outdoor department were included in this study. They were assessed by lab results of glycosylated hemoglobin, fasting and random blood sugar levels and neurological physical examination.
Results: The physical examination with Michigan Neuropathy Screening instrument showed that around 29 of the patients were having established neuropathy. The PainDETECT questionnaire on the other hand showed about 42 patients having a definitive neuropathy while the neurothesiometer showed that 79 of the total patients had varying degrees of neuropathy.
Conclusion: The neurothesiometer is a better diagnostic tool for diagnosing diabetic neuropathy in patients
Comparison of the Mechanical Properties of Four-layer Epoxy Composite Reinforced with Natural Jute Fibers and Symmetrical E-glass Synthetic Fibers
Research that produces environmentally friendly products continues to be developing. Research related to the natural fiber jute material and epoxy matrix has done. Epoxy composite jute empowered do with the preparation of symmetry with four layers of fiber volume fraction of 27.89% and composite epoxy e-glass Fiber empowered four balance with 28.86% fiber volume fraction. Mechanical testing is done via Drag test to determine the tensile strength and stretch. From the analysis, it\u27s finding that the tensile strength of the symmetry jute fiber reinforced epoxy tensile strength was 48,378 MPa, and the strain was 11,998%. Meanwhile, the tensile strength and pressure in empowered epoxy e-glass fiber symmetry of four layers, each for 95.516 MPa and 7.7032%. Characterization has also been carried out through SEM testing. The results show that e-glass fiber fractures can still be seen as regular and tend to be straight and flat rods compared to symmetrical fiber-reinforced jute composite epoxy composites whose fibers are irregular. So that shows that the strength of the epoxy composite reinforced e-glass fiber is very large compared to the strength of the four-layer jute fiber-reinforced epoxy composite symmetry
The Comparison of Gabapentin and Amitriptilin Effectivity as Pain Therapy in Herniated Nucleus Pulposus
Herniated nucleus pulposus (HNP) is one of peripheral neuropathic pain. Although concensus guidelines for the treatment of neuropathic pain are based on the results of the RCT studies, there are still gaps in the literatures. This study aimed to compare the effectiveness and quality of life of gabapentin and amitriptyline for the treatment of pain in HNP. The method used a quasi experimental with consequtive sampling. This study included 30 patients in the gabapentin group and 26 patients in the amitriptyline group, and each group was evaluated for 1 month. Effectiveness was assessed using Visual Analogue Scale (VAS) every 2 weeks then analized by independent and paired sample t test. The results showed that the use of gabapentin and amitriptilin in 4 weeks showed the decrease of pain score measured by visual analog scale 3.70 ± 0.349 and 3.500 ± 0.34 although there was no statistical difference (p value = 0.704). To sum up, effectiveness of gabapentin and amitriptyline in the treatment of neuropathic pain did not have statistical difference
The Comparison Between Chemical and Natural Extraction In Textile Dyeing With Indigofera
Indigo is categorized as a vat dyes, which is needs to pass a fermentation phase in the extraction process before it could be used as a textile dye due to its lack of fastener substances. Vat dyes are known to be the most solid dye with high endurances compared to other textile dyes according to how the colour will fade caused by acid or alkaline substances. The fermentation process of Indigofera dye could be done using chemical or natural ingredients. Sodium Hydrosulphite could be used in chemical fermentation, while Javanese brown sugar is used in natural fermentation for Indigo dye. This study uses comparative method with material experimental approach. Comparison between the use of Indigofera dye with natrium hydrosulphite fermentations and Indigofera dye with Javanese brown sugar fermentations will be analyzed. this study is purposed to find the advantages and disadvantages in both Indigofera dye substances made of brown sugar fermentation in the vatting process and hydrosulfite fermentation in the vatting process. the results of this study can be used as references in dyeing textile using indigofera for business people, craftsmen, artists, and students in developing their product designs.
Keywords Indigofera dye, natural dyes, extraction, fermentatio
The Comparison of Creatinine and Cystatin C Value in Preeclampsia Severity and Neonatal Outcome
Objectives: to compare the levels of creatinine and cystatin C with the severity of preeclampsia, and assess neonatal outcomes.Materials and Methods: Creatinine, cystatin C, and neonatal outcomes were assesed in 17 normotensive samples, 17 samples of mild preeclampsia and 17 samples of severe preeclampsia. Analysis of data with statistical tests of ANOVA and t test differences between 2 proportions.Results: The mean levels of creatinine in the normotensive group, mild preeclampsia, severe preeclampsia are 0.56 mg/dL, 0.67 mg/ dL, and 0.75 mg/dL, p=0.138; While on cystatin C are 0.82 mg/L, 1.03 mg/L and 1.32 mg/L, p=0.000. The adverse neonatal out-come wasn't found in the normotensive group. In mild pre-eclampsia obtained 1 preterm birth and 1 intrauterine fetal death (IUFD), whereas in severe preeclampsia obtained 3 babies born preterm, 1 IUFD, and 1 intrauterine growth restriction (IUGR).Conclusion: levels of cystatin C was increased significantly in line with increased severity of preeclampsia, whereas creatinine was not increased significantly. Cystatin C is better than crea-tinine as a marker of renal dysfunction in preeclampsia patients. There was an increase in adverse neonatal outcomes in the group of preeclampsia
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Comparison of wind turbine tower failure modes under seismic and wind loads
This paper studies the structural responses and failure modes of a 1.5-MW horizontal-axis wind turbine under strong ground motions and wind loading. Ground motions were selected and scaled to match the two design response spectra given by the seismic code, and wind loads were generated considering tropical cyclone scenarios. Nonlinear dynamic time-history analyses were conducted and structural performances under wind loads as well as short- and long-period ground motions compared. The results show that under strong wind loads the collapse of the wind turbine tower is driven by the formation of a plastic hinge at the lower section of the tower. This area is also critical when the tower is subject to most ground motions. However, some short-period earthquakes trigger the collapse of the middle and upper parts of the tower due to the increased contribution of high-order vibration modes. Although long-period ground motions tend to result in greater structural responses, short-period earthquakes may cause brittle failure modes in which the full plastic hinge develops quickly in regions of the tower with only a moderate energy dissipation capacity. Based on these results, recommendations for future turbine designs are proposed
Comparison of Career Decision Difficulties Between Nursing Freshmen and Interns
Career selection is one of the most important decisions an individual makes in his life. High career expectation could result in career decision difficulties. This study aimed to compare and analyze the career decision difficulties between nursing freshmen and interns. This cross-sectional study involved 110 and 66 nursing freshmen and interns respectively (n=176) in two private nursing colleges. Career decision difficulties questionnaire was used in data collection. Descriptive statistic and independent sample t test were used in data analysis (α<.05). Results showed that most respondents experienced moderate difficulties in both groups. Overall, there was no significant difference of career decision difficulty found between groups (p=.057), but indecisiveness, dysfunctional myths, lack of knowledge about the process of career decision making, lack of information, lack of information about occupations, lack of information about ways of obtaining additional information, and internal conflicts were significantly different between groups (all p<α). Career decision difficulties occur similarly both in nursing freshmen and interns
Comparison of Blood Pressure and Blood Glucose Level Among Elderly with Non-communicable Disease
Due to increasing age, elderly are prone to non-communicable diseases (NCD), such as hypertension (HT) and diabetes mellitus (DM). Easy physical condition monitoring of people with HT and/or DM is by measuring their blood pressure (BP) and/or blood glucose level (BGL) periodically. This study aimed to compare and analyze the differences of BP and BGL among elderly with HT and/or DM in Bangkok and Surabaya. This cross-sectional study involved 100 and 96 elderly with HT and/or DM in communities of Bangkok and Surabaya respectively (n=196). There were three groups of samples which consisted of 60 DM, 68 HT, and 68 DM&HT cases. Instruments used were demography questionnaire, sphygmomanometer, and glucometer. Test of one-way ANOVA, Least Significant Difference (LSD), Kruskal-Wallis, and Mann-Whitney U were used for data analysis (α<.05). There was a significant difference of systolic and diastolic BP found between groups (p=.000 and p=.011 respectively), but no difference found between the groups of HT and DM&HT (p=.657 and p=.330 respectively). There was a significant difference of BGL found between groups (p=.002), but no difference found between the groups of HT and DM (p=.075) and between the groups of DM and DM&HT (p=.066). BP is significantly different between the group of HT and DM in term of systole and diastole, especially in elderly, but BGL is similar. The risk of being HT for elderly with DM is very high. Elderly with DM&HT have high BP and BGL similarly to those with single disease of HT or DM
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