Simulation and classification of power quality events based on wavelet transform energy using feature selection method

In this paper mathematical modeling method has been used in order to simulating of power quality events. In regarding to excellent neural network function in classification and pattern recognition works, multilayer neural network has been used for events classification. The STFT and Discrete Wavelet Transform are used for feature extraction. Acquired features of this step are decreased using advance algorithm of feature selection. Then these extracted features were given to the neural network as input. The simulation results showed that the classification precision of data caused by the algorithm of feature selection is better in compare with the precision of total data classification.Keywords: Power quality, neural network, Wavelet transform, Feature selectio

REPEATABILITY OF CARDIAC MAGNETIC RESONANCE RADIOMICS: A MULTICENTRE MULTI-VENDOR TEST-RETEST STUDY

Aims: To evaluate the repeatability of cardiac magnetic resonance (CMR) radiomics features on test-retest scanning using a multi-centre multi-vendor dataset with a varied case-mix. Methods and Results: The sample included 54 test-retest studies from the VOLUMES resource (thevolumesresource.com). Images were segmented according to a pre-defined protocol to select three regions of interest (ROI) in end-diastole and end-systole: right ventricle, left ventricle (LV), and LV myocardium. We extracted radiomics shape features from all three ROIs and, additionally, first-order and texture features from the LV myocardium. Overall, 280 features were derived per study. For each feature, we calculated intra-class correlation coefficient (ICC), within-subject coefficient of variation, and mean relative difference. We ranked robustness of features according to mean ICC stratified by feature category, ROI, and cardiac phase, demonstrating a wide range of repeatability. There were features with good and excellent repeatability (ICC ≥ 0.75) within all feature categories and ROIs. A high proportion of first-order and texture features had excellent repeatability (ICC ≥ 0.90), however, these categories also contained features with the poorest repeatability (ICC < 0.50). Conclusion: CMR radiomic features have a wide range of repeatability. This paper is intended as a reference for future researchers to guide selection of the most robust features for clinical CMR radiomics models. Further work in larger and richer datasets is needed to further define the technical performance and clinical utility of CMR radiomic

Effect of lavender inhalation on the symptoms of primary dysmenorrhea and the amount of menstrual bleeding: A randomized clinical trial

Objective: The purpose of this study was to explore the effect of Lavandula angustifolia (lavender) inhalation on the symptoms of dysmenorrhea and the amount of menstrual bleeding in female students with primary dysmenorrhea. Design: This study is an experimental clinical trial. The subjects were 96 female students residing in dormitory at Tehran University of Medical Sciences in 2011 and suffering from level two or three dysmenorrhea according to the verbal multi-dimensional scoring system. The inclusion criteria were as: being single, suffering from primary dysmenorrhea, having no genital organs disorder, having no systemic disease, having regular menstrual cycles, using no contraceptives, etc. The follow-up time was 4 menstrual cycles. Interventions: The subjects were randomized into two groups: experimental (n = 48) who inhaled lavender based on sesame oil, and placebo (n = 48) who inhaled sesame oil only. Main outcome measures: The severity of dysmenorrhea symptoms was measured through a questionnaire, and the amount of menstrual bleeding was measured by sanitary towel usage. Methods: Ordinal logistic regression and generalized estimating equation (GEE) were used to analyze the data. Results: The symptoms of dysmenorrhea were significantly lowered in the lavender group compared to the placebo group (p < 0.001). The amount of menstrual bleeding in the lavender group was reduced in comparison to the placebo group but the difference was not statistically significant (p = 0.25). No significant difference was observed for blood clot among the students (p = 0.666). Conclusions: This study showed that lavender inhalation was effective in alleviating dysmenorrhea symptoms, suggesting that it could be applied by midwives in a safe manner because of no side effects, simplicity and cost-effectiveness for all patients. (C) 2014 Elsevier Ltd. All rights reserved

The effect of infant massage on the frequency and duration of breast feeding- A randomized clinical trial

زمینه و هدف: شیر مادر بهترین تغذیه برای نوزاد است، زیرا فواید سلامتی بی شماری را برای مادر و نوزاد فراهم می کند. ماساژ به عنوان بخش روتینی از مراقبت شیرخواران در بسیاری از فرهنگ ها استفاده می گردد. هدف از این مطالعه بررسی تاثیر ماساژ توسط مادر بر دفعات و مدت زمان شیرخوردن شیرخوار بود. روش بررسی: این مطالعه کارآزمایی بالینی بر روی 80 شیرخوار از زنان نخست زای مراجعه کننده به مراکز بهداشتی درمانی منتخب دانشگاه علوم پزشکی شهرکرد در سال 1389 انجام یافته است. شیرخواران به طور تصادفی به دو گروه 40 نفره تقسیم شدند. درگروه آزمون ماساژ توسط مادر 2 نوبت در روز (صبح و عصر) و به مدت 8 هفته، هر بار به مدت 15 دقیقه انجام گرفت؛ در حالی که گروه کنترل تنها مراقبت های معمول را دریافت نمودند. ابزار جمع‌آوری اطلاعات فرم ثبت خاطرات روزانه والدین شیرخوار در خصوص دفعات و مدت زمان شیرخوردن شیرخوار بود که در ابتدای مطالعه و انتهای هفته-های چهارم و هشتم مطالعه توسط مادر تکمیل ‌گردید. یافته ها: یافته های مطالعه نشان داد که مدت و دفعات شیرخوردن در هفته های چهارم و هشتم پس از مداخله در گروه آزمون به طور معناداری بیشتر از گروه کنترل بود (05/0>P). نتیجه گیری: به طور کلی نتایج حاصل از این پژوهش نشان داد که ماساژ بر دفعات و مدت شیر خوردن شیر خواران موثر بوده و آن را ارتقاء بخشیده است. از آنجا که ماساژ یکی از عوامل مهم در موفقیت شیردهی با شیر مادر می باشد؛ لذا تأکید بر اهمیت ماساژ در هر زمان ممکن، با هر طول مدتی پس از تولد توصیه می گردد

THE RELATIONSHIP OF MARITAL ADJUSTMENT AND SEXUAL FUNCTION WITH PSYCHOLOGICAL FACTORS AFFECTING TREATMENT IN INFERTILE WOMEN

Abstract. Infertility is one of the most importantissues of reproductive health that has prominent effects on psychological and social aspects of couple's life. Infertility causes women’s concern about their sexual attractiveness and also their physical and mental health, It is even possible that using assisted reproductive technologies have negative effects on women’s feelings of the sexual values and marital relationships. This study therefore aimed to investigate the relationship of marital adjustment and sexual function with psychological factors affecting treatment in infertile women in 2013 in Mashhad, Iran. This correlational study was performed on 130 infertile women referred to Montaserie Infertility Research Center, Mashhad who selected using convenient sampling. Research tools were consisted of demographic questionnaires including personal and infertility-related information, and valid and reliable ROSEN Female Sexual Function Index (FSFI),Spanier Marital Adjustment Scale(DAS) and Goldbergand Hillier General Health Questionnaire, which were completed by the subjects. Data analysis was carried out by SPSS software using t-test,one way ANOVA, Spearman and Pearson correlation tests. The mean score of awareness of infertility and the length of infertility treatment were 5.24±4.12 and 4±3.95 years, respectively. The cause of infertility in 46.9% was a female factor and in 38.7% a male factor. General health in 49.2% of the infertile women were good. 54.6% of the infertile women had poor sexual function and 76.9% had high maritaladjustment. There was a direct correlation between sexual function and marital adjustment with general health in infertile women (P<0.001).A significantrelationship was also seen between sexual function and spouse accompany during treatment (P<0.05). Also a direct correlation was found between marital adjustment and being hopeful to treatment success and also spouse accompany during treatment in infertile women (P<0.05). The findings showed that infertile women with improved sexual function and good marital adjustment will have better mental health and are more hopeful toinfertility treatment . These results can be incorporated in planning of training and counseling programs, specially for infertile women who suffer from psychological disorders

Effect of methadone on depression, anxiety and quality of life in addicts

Introduction: Addiction treatment and breaking the vicious cycle that is difficult and expensive. And want comprehensive treatment system with different approaches to drug therapy, psychotherapy and rehabilitation. In this study, was assessed the effects of methadone therapy on depression, anxiety and quality of life in addicts referred to addiction Treatment of Health Center of Shahid Ahmadi Tehran. Materials & methods: This study was semi experimental that in 1389- 90 years was performed on addicts refer to addiction treatment center of ShahidAhmadi Tehran with available sampling method. Overall 96 people entered the study. The questionnaire consisted of 4 parts: Demographic information, Beck's depression inventory, STAI anxiety and quality of life, was complete before the start of treatment with methadone and one month after of treatment with methadone. Data were analyzed by using spss16 and paired t-test and wilcoxon. Findings: The results showed that 72 addict, were depressed before the treatment with methadone. One month after treatment, the prevalence of depression in patients was reduced to 46 persons. This decrease was statistically significant. Level of anxiety was reduced after taking the methadone. Also the quality of life after treatment with methadone was significantly more than ago. Conclusion: Use of alternative treatments such as methadone therapy can be effective in reduction the prevalence and severity of depression, anxiety and increase the quality of life

The effect of massage with oils on the growth of term infants: a randomized controlled trial

Background and Aims: Infant massage could potentially benefit both physiological and psychological health. This study aims to determine the effect of massage with oils on the growth of full-term infants, which is given by their mothers. Study Design: This is a double-blind randomized controlled trial which was conducted on full term infants visited in the nine Public Health Centers of Shahrekord, Iran in 2010. Material and Methods: This study included 217 infants. Inclusion criteria for the infants were age scale between 10 to 15 days, full term gestation, birth weight of 2500 grams at least, Apgar score of 7 or above, no resuscitation after the birth, exclusive breastfeeding during the study, medically stable condition without any need for drugs, nulliparous. The infants were randomized into four groups: massage with sunflower oil, massage with sesame oil, massage without oil, and no massage (control group). Massage was given by mothers twice a day for 4 weeks, starting from the 10 - 15th day of life. Weight and height were measured weekly. At last, Repeated Measures Analysis of Covariance was employed to analyze the data. Birth weight (height) as well as mean frequency of breastfeeding during the study was deemed as covariates. Results: The findings showed that the mean of weight and height was significantly different between groups over time, respectively (P = 0.005, P < 0.001). The infants’ mean weight in sunflower oil massage group increased significantly compared with other three groups (P = 0.005). In addition, infants’ height gain in sunflower and sesame oil massage group were significantly higher than message-only and control groups (p < 0.001). Conclusions: Massage with oil, especially sunflower oil is an inexpensive, simple, and effective intervention which improved weight and height gain in selected samples. Further studies are needed to evaluate the serious adverse effects, if any, to notify midwives and health care staff

Cardiovascular research highlights from the UK Biobank: opportunities and challenges

This is a pre-copyedited, author-produced version of an article accepted for publication in Cardiovascular Research following peer review. The version of record Zahra Raisi-Estabragh, Steffen E Petersen, Cardiovascular research highlights from the UK Biobank: opportunities and challenges, Cardiovascular Research, Volume 116, Issue 1, 1 January 2020, Pages e12–e15, https://doi.org/10.1093/cvr/cvz294 is available online at: https://doi.org/10.1093/cvr/cvz294