Modeling Structural Equations of Factors Affecting the Formation of Organizational Forgetfulness in Public Organizations

The aim of this study was to present a causal model of factors affecting the formation of organizational forgetfulness in government organizations using structural equations. The method of the present study is descriptive (non-experimental) and the correlational research design is structural equations with the least squares method. Participants in the present study included managers and experts of government organizations in Tehran. According to Cochran's formula, 234 managers and experts of government organizations in Tehran were selected as a statistical sample using simple random sampling. The standard questionnaire of Huang et al. (2018) and Yeh et al. (2020) were used to measure the research variables. This questionnaire consists of 24 items. Questions were measured based on a five-point Likert scale (strongly disagree = 1 to strongly agree = 5). The internal consistency coefficient of this questionnaire was 0.85 using Cronbach's alpha. Findings indicate that the impact factor of knowledge management and experienced manpower on promoting organizational resilience and interpersonal communication is significant at the level of (0.01). Also, promoting organizational resilience and interpersonal communication have a significant effect on random and targeted organizational forgetfulness, and meritocracy plays a moderating role in the organizational forgetfulness model. The results showed that 29% of the variance of organizational resilience promotion, 78% of interpersonal communication, 69% of random organizational forgetfulness and 55% of targeted organizational forgetfulness are explained by the research model

Development and Evaluation of the Effectiveness of a Sexual Communication Model Counseling Package on the Satisfaction and Sexual Intimacy of Iranian Couples

Introduction: Sexual satisfaction is considered one of the most important factors in marital happiness, and it plays a significant role in the health, well-being, and overall quality of life for individuals in a society. Therefore, the research aims to develop and assess the effectiveness of a counseling package based on the sexual communication model on the level of satisfaction and sexual intimacy in Iranian couples.Methods: The research was conducted using a mixed exploratory research design. Initially, qualitative methods were employed to identify the factors influencing couples' sexual exchange. Subsequently, a counseling package was developed based on these factors. For the purpose of quantitative validation, the relative content validity ratio and content validity index were utilized. In the next research phase, an applied and semi-experimental method with a pre-test and post-test design was employed, including a one-month follow-up with a control group. Data analysis was carried out using repeated measures analysis of variance (ANOVA) and the SPSS software version 26.Results: The results showed that the relative content validity coefficient and content validity index were higher than the required size (CVR≥49 and CVI≥79) and a valid counseling package was prepared. The results of the next stage also showed that the sexual communication pattern counseling package significantly increased sexual satisfaction (P<0.01) and sexual intimacy (P<0.01); the experimental group had a significant increase in sexual satisfaction and intimacy compared to the control group.Results: The results indicated that the content validity ratio and content validity index exceeded the required thresholds (CVR≥0.49 and CVI≥0.80), establishing the validity of the counseling package. Subsequently, the results of the next phase demonstrated that the sexual communication pattern counseling package significantly contributed to sexual satisfaction (P<0.01) and sexual intimacy (P<0.01). The experimental group exhibited a substantial increase in sexual satisfaction and intimacy compared to the control group.Conclusion: The counseling package based on the sexual communication pattern is valid and can lead to an increase in the sexual satisfaction and intimacy of Iranian couples

Clinical outcomes and complications of treatment with supraflex stent in patients with coronary artery disease: One year follow up

Cardiovascular disease is one of the most important causes of morbidity and mortality in the world. Prevention is often a percutaneous coronary intervention. The new generation of stents is the Sirolimus Eluting Stent. The current study was aimed to investigate the clinical outcomes and complications of treatment with supraflex stent during one year follow up in patients with coronary artery disease. This cross-sectional study was performed on patients with myocardial ischemia who were candidate for angioplasty between 2017 -2018 in Imam Reza Hospital, Mashhad, Iran. Patients were followed for four primary end points including Target lesion revascularization (TLR), stent thrombosis (ST), myocardium infarction (MI) and cardiac death (CD) for one year. Descriptive data were analyzed by Freidman at a significance level of 0.05. A total of 287 patients were enrolled in the study. There was no TLR, MI, ST and CD records in the one month follow up. Six months follow up demonstrated three TLR patients and three MI patients, but no ST and death were reported. After one year follow up, three cases of CD and four ST cases were found in patients treated with supraflex stent. Based on the Freidman test, the highest rate of TLR was revealed in a six-month follow-up when comparing with onemonth and twelve-month follow-up (p = 0.05). No significant relationship was found between the other cases. The most common complications associated with supraflex stent were TLR and MI in six-month follow-up. The most likely occurrence of CD and ST were found in one year follow up

Changes of QT Dispersion in Patients Suffering from Aluminium Phosphide Poisoning (Rice Pill)

BACKGROUND: Aluminium phosphide (ALP) or rice pill is a substance used in developing countries due to its low cost as pesticides. The availability of this substance has been lead to an increased rate of the use of this toxic inorganic compound for suicide. Complications are considered to be dose-related toxicity and hospitalisation time, varying from hemodynamic disorder, hypoglycemia, hyperglycemia, shock, cardiotoxicity, pulmonary and renal failures. The consumption of this substance is one of the major causes of mortality due to heart arrhythmia. QT dispersion represents a regional difference in ventricular repolarisation and electrical instability of the heart. AIM: The purpose of this study was to investigate the effect of ALP poisoning on QT dispersion. METHODS: In this study, 70 patients with ALP poisoning were enrolled, and 10 patients were excluded due to the exclusion criteria. QT dispersion rate was calculated in 60 patients using the standard electrocardiography at the time of referral. The above data were compared with the control group, which included 40 subjects with normal coronary angiography, and without cardiovascular risk factors. RESULTS: The findings presented herein indicated a significant correlation between QT dispersion and control group (P &lt; 0.0.5). There was a significant relationship between the severity of acidosis and the patient's tablets –taking a number (P &lt; 0.05). However, there was no relationship between QT dispersion with the severity of acidosis and mortality in patients. CONCLUSION: Because there is no CAD risk factor in the population, it can be concluded that increase in QT dispersion in these individuals can be due to ALP poisoning; nevertheless, this is not considered to be a factor in increasing the morbidity of these patients

The effect of proton-pump inhibitors on development of arrhythmia and hypomagnesaemia after off-pump coronary artery bypass surgery

Introduction: Long-term use of proton-pump inhibitors (PPI) can result in hypomagnesaemia and arrhythmia.The aim of this study was to compare the effect of PPI and histamine 2-receptor antagonists (H2RA) on the incidence of hypomagnesaemia and arrhythmia in patients following off-pump coronary artery bypass surgery (CABG).Method: In this randomized-controlled clinical trial 290 patients admitted ICU after off-pump CABG were randomly divided into two groups of H2RA (n=145) and PPI (n=145).For patients in the H2RA group, 50 mg intravenous ranitidine was prescribed every 8hrs after during the nothing by mouth (NPO) period followed by 40mg famotidine tablet after starting the oral regimen (PO). The PPI group received 40 mg pantozol IV injections every 12 hrs during the NPO period and 40mg pantozol tablets once daily after becoming PO.The patients were investigated for development of hypomagnesaemia and associated arrhythmia.Results: In total 271 patients with the mean age of 59.3±10 yrs completed the study (female/male=32.8%). Hypomagnesaemia occurred in 60.1% of the patients; 76 (56.7%) in the H2RA group and 87 (63.5%) in the PPI group (P=0.245) whereas arrhythmia had a prevalence of 12 (9.6%) and 15 (11.1%), respectively (P=0.690). The mean time of occurrence of hypomagnesaemia and arrhythmia were 1.75±1.08 and 3.0±0.9 days after the operation in the H2RA group and 1.47±0.7 and 2.9±1.5 days in the PPI group, respectively (P=0.111 and P=0.897).Conclusion: Our study revealed that the short-term use of PPIs does not result in higher rates of hypomagnesaemia and associated arrhythmia in comparison to H2RAs after off-pump CABG

Spirometric Parameters in Waterpipe Smokers, Cigarette Smokers, and Non-smokers of Shahedieh Cohort Study

Background: Different kinds of smoking tobacco may affect pulmonary function and reduce some spirometric parameters. This study aimed to assess the relationship between smoking cigarettes and waterpipe and spirometric parameters. Methods: This was a cross-sectional study on 1543 middle-aged individuals, as a sub-study of the Shahedieh cohort study in Yazd. The participants were randomly selected from the Shahedieh cohort population and were divided into 6 groups according to their smoking habits: non-smokers (n=455), cigarette smokers (n=139), waterpipe smokers (n=287), ex-cigarette smokers (n=131), concurrent waterpipe and cigarette smokers (n=121), and cigarette or waterpipe passive smokers (n=410). Spirometry was performed on all participants and spirometric parameters were compared between different groups. The data were analyzed by SPSS (version 20) using Kolmogorov-Smirnov, Kruskal-Wallis, and Mann-Whitney U tests. Findings: FEV1%, FEV1/FVC, and PEF25-75% were significantly lower in cigarette smokers, compared to waterpipe smokers and non-smokers. The measures were not significantly lower in waterpipe smokers in comparison to non-smokers. The frequency of obstructive pattern and small airway diseases was significantly higher in cigarette smokers compared to waterpipe smokers and non-smokers. Conclusion: The results of this study showed that in the middle-aged population, spirometric parameters related to airway obstruction (FEV1, FEV1/FVC, and FEF25-75%) were significantly lower in cigarette smokers than in non-smokers and waterpipe smokers, but these parameters were not significantly different between waterpipe smokers and non-smokers

Generalized Uncertainty Principle and the Ramsauer-Townsend Effect

The scattering cross section of electrons in noble gas atoms exhibits a minimum value at electron energies of approximately 1eV. This is the Ramsauer-Townsend effect. In this letter, we study the Ramsauer-Townsend effect in the framework of the Generalized Uncertainty Principle.Comment: 11 pages, 3 figure

An innovative method to assess clinical reasoning skills: Clinical reasoning tests in the second national medical science Olympiad in Iran

BACKGROUND: Clinical reasoning plays a major role in the ability of doctors to make a diagnosis and reach treatment decisions. This paper describes the use of four clinical reasoning tests in the second National Medical Science Olympiad in Iran: key features (KF), script concordance (SCT), clinical reasoning problems (CRP) and comprehensive integrative puzzles (CIP). The purpose of the study was to design a multi instrument for multiple roles approach in clinical reasoning field based on the theoretical framework, KF was used to measure data gathering, CRP was used to measure hypothesis formation, SCT and CIP were used to measure hypothesis evaluation and investigating the combined use of these tests in the Olympiad. A bank of clinical reasoning test items was developed for emergency medicine by a scientific expert committee representing all the medical schools in the country. These items were pretested by a reference group and the results were analyzed to select items that could be omitted. Then 135 top-ranked medical students from 45 medical universities in Iran participated in the clinical domain of the Olympiad. The reliability of each test was calculated by Cronbach's alpha. Item difficulty and the correlation between each item and the total score were measured. The correlation between the students' final grade and each of the clinical reasoning tests was calculated, as was the correlation between final grades and another measure of knowledge, i.e., the students' grade point average. RESULTS: The combined reliability for all four clinical reasoning tests was 0.91. Of the four clinical reasoning tests we compared, reliability was highest for CIP (0.91). The reliability was 0.83 for KF, 0.78 for SCT and 0.71 for CRP. Most of the tests had an acceptable item difficulty level between 0.2 and 0.8. The correlation between the score for each item and the total test score for each of the four tests was positive. The correlations between scores for each test and total score were highest for KF and CIP. The correlation between scores for each test and grade point average was low to intermediate for all four of the tests. CONCLUSION: The combination of these four clinical reasoning tests is a reliable evaluation tool that can be implemented to assess clinical reasoning skills in talented undergraduate medical students, however these data may not generalizable to whole medical students population. The CIP and KF tests showed the greatest potential to measure clinical reasoning skills. Grade point averages did not necessarily predict performance in the clinical domain of the national competitive examination for medical school students

The domination over time and its discretisation

Domination in graphs is well known and has been an extensively researched branch of graph theory. Since the variation over time is one of the important properties of real-world networks, we study the influence of time on the domination problem. In this paper, we introduce the domination over time problem, including time delay on arcs. Then, an optimal solution to its discretisation is obtained, which is the solution of the original problem