A Robust Parallel Preconditioner for Indefinite Systems Using Hierarchical Matrices and Randomized Sampling

2017 ◽  
Author(s):  
Pieter Ghysels ◽  
Sherry Li Xiaoye ◽  
Christopher Gorman ◽  
Francois-Henry Rouet
Keyword(s):  
Hierarchical Matrices ◽  
Randomized Sampling ◽  
Indefinite Systems

The effect of brain vitalization activity on dementia incidence in elderly at Budi Luhur Nursing Home of Yogyakarta, Kasongan, Bantul

2020 ◽  
Vol 1 (3) ◽  
pp. 43-50
Author(s):  
Firstyono Miftahul Aziz ◽  
Suratini Suratini
Keyword(s):  
Nursing Home ◽  
The Elderly ◽  
Control Group ◽  
P Value ◽  
Sampling System ◽  
Randomized Sampling ◽  
Care For The Elderly ◽  
Dementia Incidence ◽  
The Family ◽  
The Impact

For some people, dementia is considered as a disease that is common in elderly, regardless the impact of dementia. Taking care for the elderly with dementia brings stress for the family. It can cause and increase the family burden. Brain vitalization gymnastics is one of the methods to improve memory. The study aims to investigate the effect of brain vitalization activity on dementia incidence in elderly at Budi Luhur Nursing Home of Yogyakarta. The study used Quasi Experimental with Pretest-Posttest control group and randomized sampling system. The samples were taken randomly as many as 26 respondents and were divided into two groups namely 13 respondents of experimental group and 13 respondents of control group. The statistical test used Wilcoxon Match Pairs Test. The result showed that Wilcoxon Match pairs test obtained p value 0,003, which is smaller than 0,005. There is an effect of brain vitalization activity on dementia incidence in elderly at Budi Luhur Nursing Home of Yogyakarta

scholarly journals Opinions, perceptions and attitudes toward an electronic health record system among practicing nurses

2017 ◽  
Vol 8 (3) ◽  
pp. 12
Author(s):  
Ahmad H. Abu Raddaha ◽  
Arwa Obeidat ◽  
Huda Al Awaisi ◽  
Jahara Hayudini
Keyword(s):  
Electronic Health Record ◽  
Clinical Information System ◽  
Research Work ◽  
Healthcare Delivery ◽  
Future Research ◽  
Health Record ◽  
Randomized Sampling ◽  
Positive Attitudes ◽  
Electronic Health ◽  
The Impact

Background: Despite worldwide expanding implementation of electronic health record (EHR) systems, healthcare professionals conducted limited number of studies to explore factors that might facilitate or jeopardize using these systems. This study underscores the impact of nurses’ opinions, perceptions, and computer competencies on their attitudes toward using an EHR system.Methods: With randomized sampling, a cross-sectional exploratory design was used. The sample consisted of 169 nurses who worked at a public teaching hospital in Oman. They completed self-administered questionnaire. Several standardized valid and reliable instruments were utilized.Results: Seventy-four percent of our study nurses had high positive attitudes toward the EHR system. The least ranked perception scores (60.4%) were linked to perceiving that suggestions made by nurses about the system would be taken into account. Nurses who reported that the hospital sought for suggestions for customization of the system [OR: 2.54 (95% CI: 1.09, 5.88), p = .03], who found the system as an easy-to-use clinical information system [OR: 6.53 (95% CI: 1.72, 24.75), p = .01], who reported the presence of good relationship with the system’s managing personnel [OR: 3.59 (95% CI: 1.13, 11.36), p = .03] and who reported that the system provided all needed health information [OR: 2.97 (95% CI: 1.16, 7.62), p = .02] were more likely to develop high positive attitudes toward the system.Conclusions: To better develop plans to foster the EHR system’s use facilitators and overcome its usage barriers by nursing professionals, more involvement of nurses in system’s customization endeavors is highly suggested. When the system did not disrupt workflows, it would decrease clinical errors and expand nursing productivity. In order to maximize the utilization of the system in healthcare delivery, future research work to investigate the effect of the system on other healthcare providers and inter-professional communications is pressingly needed.

scholarly journals Performance and Carcass Production of Balinese Ducks Given Rumen Watse Based Biosupplement Rations

2018 ◽  
Vol 1 (2) ◽  
pp. 29
Author(s):  
Gusti Ayu Mayani Kristina Dewi ◽  
I Nyoman Sutarpa Sutama ◽  
I Wayan Wijana ◽  
I Made Mudita
Keyword(s):  
Rumen Content ◽  
Meat Production ◽  
Bacterial Isolates ◽  
Cellulolytic Bacteria ◽  
Randomized Sampling ◽  
Bacterial Inoculants ◽  
The Village

A study aimed at studying the performance and production of Balinese duck carcasses that were given rations containing biosupplement-based waste of rumen content, conducted in the village of Peguyangan, Denpasar, Bali, for 3 months. Four biosupplements produced in this study were 1) BR0 = biosupplement with fermented rumen based waste without bacterial isolates, 2) BR1 = biosupplement with fermented rumen based waste with superior 1 cellulolytic bacteria inoculant  (BR3.5), 3) BR2 = biosupplement with fermented rumen based waste with superior 2 cellulolytic bacterial inoculants  (BR3.3), 4) BRmix = biosupplement with fermented rumen based waste with combination of superior cellulolytic bacteria 1 and 2 (BR3.5 and BR3.3), The study was carried out with Completely Randomized Sampling/CR Design with 5 treatments and 3 repetitions, in which each repetition consisted of 5 Balinese ducklings aged 2 weeks. The treatment given was to ducks given supplemented ration with BR0; BR1; BR2; BRmix, respectively for the treatment of R1; R2; R3; and R4, as well as ducks that were given basal rations without supplementation (R5). The results showed that the performance of duck that received treatment of R2 was significantly better (P<0,05) than R1, R3, R4 and R5, while the carcass butching weight and fat weight were not significantly different (P>0,05) . Based on the results obtained, it can be concluded; 1) the performance of Balinese ducks receiving ration biosupplement of R2 is better compared to R1, R3, R4 and R5; 2) Meat production/ducks carcasses to the weight of butchery, carcass production, non-carcass parts and body fats are not significantly real between all treatments.

scholarly journals The discrepancy between manual and computerized leukocyte and thrombocyte counts

2016 ◽  
Vol 43 (3) ◽  
pp. 95
Author(s):  
Bambang Permono ◽  
Retno Asih ◽  
I Dewa Gede Ugrasena
Keyword(s):  
Gold Standard ◽  
Leukocyte Count ◽  
Predictive Values ◽  
Thrombocyte Count ◽  
Randomized Sampling ◽  
Manual Group ◽  
Manual Examination ◽  
Blood Specimens ◽  
Sensitivity Specificity ◽  
Normal Leukocyte

Background Discrepancy between results of leukocyte and throm-bocyte count by computerized and manual examination may existObjective To determine the discrepancy between computerizedand manual leukocyte and thrombocyte count.Methods The design was a randomized sampling cross sectionalstudy. The blood sample was examined with computerized CellDyn 1400 instrument for the leukocyte and thrombocyte count. Formanual examination, blood smear was performed to measurethrombocyte while leukocyte was measured in Improved Neubauerhemocytometer. The results of computerized examination wereused as gold standard. Sensitivity, specificity, predictive values ofmanual count were calculated. The agreement of Kappa and McNemar test were determinedResults Blood specimens drawn from 100 patients with differentkinds of diagnoses were examined using computerized and manualmethods. In computerized group, 66% had normal leukocyte and55% had normal thrombocyte count. In the manual group, 78% ofsubjects had normal leukocyte and 82% had normal thrombocytecount. From leukocyte examination, the sensitivity of manual countwas 87.9%, specificity was 41.2%, and positive predictive valuewas 74.36 with the agreement of Kappa of 0.32 and Mc Nemarvalue of 0.036. From thrombocyte examination, the sensitivity was96.4%, specificity was 35.6%, and positive predictive value was64.6 with the agreement of Kappa of 0.41 and Mc Nemar value of0.41.Conclusion The result of manual thrombocyte count was in ac-cordance with computerized with the agreement of Kappa of 0.41.On the other hand, there was a discrepancy between manual infavor of computerized leukocyte count with the agreement of Kappaof 0.32

scholarly journals Pivoting strategies for tough sparse indefinite systems

2013 ◽  
Vol 40 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Jonathan D. Hogg ◽  
Jennifer A. Scott
Keyword(s):  
Indefinite Systems ◽  
Pivoting Strategies

A Convergence Analysis of the MINRES Method for Some Hermitian Indefinite Systems

2017 ◽  
Vol 7 (4) ◽  
pp. 827-836
Author(s):  
Ze-Jia Xie ◽  
Xiao-Qing Jin ◽  
Zhi Zhao
Keyword(s):  
Convergence Analysis ◽  
Linear Systems ◽  
Numerical Experiments ◽  
Coefficient Matrix ◽  
Indefinite Systems ◽  
Indefinite Linear Systems ◽  
Theoretical Results

AbstractSome convergence bounds of the minimal residual (MINRES) method are studied when the method is applied for solving Hermitian indefinite linear systems. The matrices of these linear systems are supposed to have some properties so that their spectra are all clustered around ±1. New convergence bounds depending on the spectrum of the coefficient matrix are presented. Some numerical experiments are shown to demonstrate our theoretical results.

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