863 research outputs found
The Evolution of the Galaxy Cluster Luminosity-Temperature Relation
We analyzed the luminosity-temperature (L-T) relation for 2 samples of galaxy
clusters which have all been observed by the ASCA satellite. We used 32 high
redshift clusters (0.3<z<0.6), 53 low redshift clusters (z<0.3), and also the
combination of the low and high redshift datasets. We assumed a power law
relation between the bolometric luminosity of the galaxy cluster and its
integrated temperature and redshift (L_{bol,44}=C*T^alpha*(1+z)^A). The results
are consistent, independent of cosmology, with previous estimates of
LT found by other authors. We observed weak or zero evolution.Comment: 20 pages, Latex, 11 figures, GIF forma
Emotional Intelligence, Spiritual, Intellectual and Conduct Study on the Level of Understanding of Accounting (Empirical Study of Accounting Students in Colleges in Lampung)
Accounting Education held at the college on the production so that students can work as a Professional Accountant. To be able to produce quality graduates that universities should continue to improve the quality of the education system. Nuraini, 2007. worrying lack of clarity on the accounting industry generated by higher education accounting, this is because many colleges are not able to make good their students master the knowledge and life skills. This study aimed to get empirical evidence of emotional intelligence, spiritual intelligence, intellectual intelligence, learning behavior to the level of understanding of accounting, which could eventually help the college improve students' ability to understand accounting. The method used in this study is a survey method in which the model of collecting data relevant to the research problem. The population in this study were students S1 minimal own half 5. The sample of at least half of a 5 because the student has experienced a long learning process and have benefited most from the teaching of accounting. The number of samples in this study were 200 students in accounting from College of Lampung. that ultimately this study is expected to assist private universities in Lampung to boost understanding of accounting by mapping the level of intelligence and understanding of accounting in each private university in Lampung.KEY WORDSUnderstanding accounting, intelligence, learning behavio
A Comparative 6-Month Clinical Study of Acellular Dermal Matrix Allograft and Subepithelial Connective Tissue Graft for Root Coverage
Objective: Different surgical procedures have been proposed for the treatment of gingival recessions. The goal of this study was to compare the clinical results of gingival recession treatment using Subepithelial Connective Tissue Graft and an Acellular Dermal MatrixAllograft.Materials and Methods: The present study was performed on 5 patients with 9 bilateral Miller`s class I or II gingival recessions. This included 15 premolars and 3 canines. In each patient the teeth were randomly divided in two groups of test (ADMA) and control (SCTG).Clinical parameters including recession height (RH), recession width (RW), keratinized gingiva (KG), clinical attachment level (CAL) and probing depth (PD) were measured at baseline, 2, 4 and 6 months after surgery and data analysis was performed using the Wilcoxon signed rank test.Results: The mean changes (mm) from baseline to 6 months in SCTG and ADMA were 2.22±0.83 and 1.77±0.66 decrease in RH, 2.55±0.88 and 2.33±0.86 decrease in RW,1.44±0.88 and 2.0±1.11 increase in KG, 2.33±1.22 and 2.11±0.6 decrease in CAL and finally 0.22±0.66 and 0.33±0.7 decrease in PD, respectively. The differences in meanchanges were not significant between the two groups in any of the parameters. The percentage of root coverage was 85.7% and 71.1% for the control and test group,respectively. The changes from baseline to the 6 month visit were significant for both groups in all parameters but PD.Conclusion: Alloderm may be suggested as an acceptable substitute for connective tissue graft considering the root coverage effect and KG width increase
Pilates exercises and quality of life of patients with chronic kidney disease
ABSTRACT
Background and purpose:
There is a need to investigate the effects of pilates exercises on the quality of life (QOL) of patients with chronic kidney diseases (CKD). The purpose of this study was to determine the effect of pilates exercises on the QOL of CKD patients.
Materials and methods:
For this randomized controlled clinical trial, we enrolled 50 CKD patients. The participants were randomly assigned to experimental ( n = 25) and control ( n = 25) groups. Modified classical pilates exercises were performed by the experimental group three times a week over a 12-week period. The Quality of Life Short Form (KDQOL-SF) questionnaire was completed by all participants at the beginning of the trial and two months after completion of the intervention. Data analysis was conducted using Chi-square, independent t-test, and paired t-test.
Results:
There were significant increases in the scores of QOL dimensions in the experimental group after the intervention (p ≤ 0.05). Comparison of the mean differences at the beginning and two months after the study in the two groups showed that the scores related to QOL dimensions in the experimental group were significantly greater than the control group ( p ≤ 0.05).
Conclusion:
The findings indicated the pilates exercises can be valuable for improvement of CKD patients ’ QOL.
Keywords:
Chronic kidney diseases Pilates exercises Quality of lif
Machine learning for identifying demand patterns of home energy management systems with dynamic electricity pricing
Energy management plays a crucial role in providing necessary system flexibility to deal with the ongoing integration of volatile and intermittent energy sources. Demand Response (DR) programs enhance demand flexibility by communicating energy market price volatility to the end-consumer. In such environments, home energy management systems assist the use of flexible end-appliances, based upon the individual consumer's personal preferences and beliefs. However, with the latter heterogeneously distributed, not all dynamic pricing schemes are equally adequate for the individual needs of households. We conduct one of the first large scale natural experiments, with multiple dynamic pricing schemes for end consumers, allowing us to analyze different demand behavior in relation with household attri
Maintaining Integrity for Shared Data In Cloud With Ring Signatures
The wild success of cloud data services bring the cloud commonplace for data to be not only stored in the cloud, but also shared across multiple users. Unfortunately, the integrity of cloud data is subject to skepticism due to the existence of hardware/software failures and human errors. Several mechanisms have been designed to allow both data owners and public verifiers to efficiently audit cloud data integrity without retrieving the entire data from the cloud server. However, public auditing on the integrity of shared data with these existing mechanisms will inevitably reveal confidential information—identity privacy—to public verifiers. In this paper, we propose a novel privacy-preserving mechanism that supports public auditing on shared data stored in the cloud. In particular, we exploit ring signatures to compute verification metadata needed to audit the correctness of shared data. With our mechanism, the identity of the signer on each block in shared data is kept private from public verifiers, who are able to efficiently verify shared data integrity without retrieving the entire file. In addition, our mechanism is able to perform multiple auditing tasks simultaneously instead of verifying them one by one. Our experimental results demonstrate the effectiveness and efficiency of our mechanism when auditing shared data integrity
Association between self-efficacy and quality of life in women with breast cancer undergoing chemotherapy
Background: Self-efficacy is known as a factor which influences health behaviors, chronic diseases
management and quality of life in patients with cancer.
Objective: The aim of this study was to investigate the association of self-efficacy and quality of life in women with breast cancer undergoing chemotherapy.
Methods: This cross sectional study was conducted in 100 women with breast cancer referred to Seyed Al-Shohada Hospital, Isfahan in 2015. The study subjects were selected by simple random sampling method. The measurement tools were the Sherer self-efficacy scale and the World Health Organization WHOQOL-BREF quality of life assessment. Data were analyzed using one-way ANOVA and Pearson’s correlation coefficient.
Findings: Mean age was 48.25±11.93 years. The mean self-efficacy score and quality of life score were 55.78± 11 and 75.91±15.28, respectively and both of them were average. There was positive significant correlation between self-efficacy and quality of life. There was also significant association between self-efficacy and quality of life domains including physical health, mental health, social relationships and environment.
Conclusion: With regards to the results, it seems that activities such as workshops for patients, presence of a psychologist in department of chemotherapy, and providing health facilities can be effective for increasing self-efficacy and quality of life in patients with cance
Relationship Between Quality of Life and Depression in Pregnant Women
Background: Quality of life differs for different people in different situations and is related to one's self-satisfaction with life. Quality of life is affected by health status.
Objectives: The current study examined the relationship between quality of life and depression in pregnant women in Kashan city.
Patients and Methods: A Case - control study was performed on 112 depressed pregnant women (Case Group) and 353 Non-depressed pregnant women (Control Group) who referred to the prenatal health care centers of Kashan University of Medical Sciences .They completed Short Form 36 Health Survey (SF-36) to assess the quality of life and the Beck Depression Inventory to assess the level of depressive symptoms. T-test, chi-square and Pearson correlation coefficient statistical tests were used for data analysis.
Results: The findings showed that there was an inverse relationship between quality of life and depression in pregnancy (P = 0.0001). Average scores in all eight domains of quality of life were significantly lower in depressed pregnant women compared to non- depressed women. The strongest relationship was observed between depression and vitality (r =-0.52, P = 0.0001), mental health (r = -0.50, P = 0.001) and social functioning (r =-0.38, P = 0.001).
Conclusion: Depressed pregnant women had a lower quality of life. The proper management of depression during pregnancy can improve the quality of life in women. It is recommended that antenatal services integrate screening for depression into routine antenatal care
Clusters of Galaxies: New Results from the CLEF Hydrodynamics Simulation
Preliminary results are presented from the CLEF hydrodynamics simulation, a
large (N=2(428)^3 particles within a 200 Mpc/h comoving box) simulation of the
LCDM cosmology that includes both radiative cooling and a simple model for
galactic feedback. Specifically, we focus on the X-ray properties of the
simulated clusters at z=0 and demonstrate a reasonable level of agreement
between simulated and observed cluster scaling relations.Comment: 7 pages, 4 figures, accepted for publication in Advances in Space
Research (proceedings of the COSPAR 2004 Assembly, Paris
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