Investigating the Effects of Authentic Leadership of Managers on Organizational Commitment of Teachers with Organizational Justice as the Mediator Variable

The present study was conducted by the aim of investigating the fit of the presented model for the relationship between authentic leadership and organizational commitment of staff with a mediating role of organizational justice. The population of the research included all the teachers in high schools (for male students) in Education district 2 in Qom city. From the population, 300 individuals were selected through cluster sampling. For gathering the data, authentic leadership questionnaire (Avolio et al., 2007), organizational justice questionnaire of Niehoff & Moorman (1993), and Allen & Meyer's Organizational Commitment Questionnaire (2002) were used. For analyzing the data, structural equation modeling – fit indices and path coefficients – was used. The results of the analysis showed that authentic leadership has a direct and significant effect on the organizational commitment of teachers. Also, authentic leadership has an indirect effect, through organizational justice, on organizational commitment. The other finding of the research is that organizational justice has a direct and significant effect on organizational commitment of teachers, and the offered conceptual model has a significant statistical fit, that means the explanatory model for organizational commitment based on authentic leadership and organizational justice has fitness with empirical data. Finally, based on the information obtained from structural equations model, it can also be said that all the components existing in the 3 variables of the research have positive and significant relationships with one another

Comparison of the Effect of Intra-Articular Injection of Autologous (Orthokine) Interleukin-1 Receptor Antagonist (IL-1Ra) and Hyaluronic Acid in Pain Control of Knee Osteoarthritis

Background: Due to the limitations of more common treatments of osteoarthritis, pharmaceutical research has been increasingly conducted during the past two decades with the aim of determining the rate of recovery of the disease' symptoms and making the process of disease progression slow. The purpose of this study was to compare the effect of intra-articular injection of autologous interleukin-1 Receptor Antagonist and hyaluronic acid in pain control of knee osteoarthritis.Materials and Methods: A total of 60 patients with knee osteoarthritis were allocated to two groups of 30 in this randomized double-blind clinical trial. In the intervention group, injection of 2 milliliter of interleukin-1 receptor antagonist (Orthokine) into the knee joint was performed three times at intervals of one week (base time, seventh day and fourteenth day). In the control group, three injections of two milliliters of hyaluronic acid solution into the knee joint were performed at intervals of one week. Pain, symptoms, daily activities, sport-recreational performance, and knee-related quality of life were five outcomes investigated by completing two questionnaires, the knee injury and osteoarthritis outcome score (KOOS), Western Ontario, and McMaster Universities Arthritis Index (WOMAC) by the patients on two occasions before the start of treatment and six months after the last injection. Repeated measure and t-test were statistical tests used in this study.Results: The mean score of pain in the first month (p=0.005) and the sixth (p=0.049) in the intervention group was less than the control group. Based on the scores of the KOOS questionnaire, the mean score of symptoms (p=0.006), daily activities (p=0.001) and sport-recreational performance (p=0.037) in the Orthokine group were higher than the hyaluronic acid group after six months. Also, the results of the questionnaire WOMAC show that while before the start of treatment, the mean of physical performance in the Orthokine group is greater than the control group, there is no difference in any of the indicators of pain, dryness of the joint, physical performance, and total score (p=0.319) in the sixth month.Conclusion: According to the findings of this study, it seems that Orthokine has beneficial biological effects in patients with knee osteoarthritis. Intra-articular injection of Orthokine is a low invasive, safe and effective method, which can be considered as an appropriate choice in patients with chronic knee pain

The Relationship between EQ & Constructive and Non-Constructive Problem Solving Styles among Payame Noor University's students of Abadan in the year 2014

The objective of the present study is considering the relationship between EQ & constructive and non-constructive problem solving styles among students. The applied methodology is cross-correlation method. The statistical population in this study is all the educational sciences' students of Payame Noor university of Abadan in the year 2014 and the sampling is taken totally randomly and voluntary. Two surveys of EQ which proposed by Siryashring (1988) have used in this study that contain 33 questions. This study will measure 5 components of emotional intelligence: Self-awareness, self-control, self-motivation, social awareness and social skills. In addition the problem solving styles' survey that proposed by Velang (1996) has been applied that has made in two stages and has 24 questions, 12 items measure the problem-oriented style and rest of them measure the excitement-orientation. According to Cronbach's alpha the reliability coefficient of EQ is reported about 0.84. The validity of 0.63 is confirmed in Shirng's test of EQ. reliability coefficient of solving problem style is reported about 87%.Either reliability coefficient or factor content are confirmed by the faculty. Data analysis is done in two level of descriptive statistical (frequencies, percentages mean) and inferential statistics (Pearson correlation, chi-square test). The obtained results of assumptions show that there is no significant relationship between EQ and constructive problem solving; also there is no significant relationship between EQ and non-constructive problem solving. Moreover there is significant relationship between EQ in creative styles, avoidance and style tendencies. Nevertheless there is no relationship between EQ and distress styles. And the confidence style shows an inverse relationship. Keywords: EQ, Constructive problem solving styles, non- constructive problem solving style

The Relationship between Time Management and Student Achievement

The purpose of this study is to investigate the relationship between time management and achievement of students. The statistical population of this study includes the students of educational sciences in the Payame Noor University of Abadan City in 2013. The population consists of 256 members. A sample of 70 students was selected randomly. In order to collect the research data, a self-administrated questionnaire was used. The research data were analyzed through both descriptive and inferential statistics in the SPSS. The results of this study revealed that there is a significant relationship between time management and achievement of students. Another part of our results showed that there is a significant positive relationship between age and time management. Keywords: Time Management, Planning, Achievemen

Identification and prioritization of efficiency-influencing factors in banking using MADM technique (Case study: Tejarat Bank)

The present study is an attempt to identify and prioritize efficiency-influencing factors in banking system based on Analytic Hierarchy Process (AHP) and (topsis), performed by considering comments and remarks of Tejarat bank experts in Tehran. For this purpose, first the most important efficiency-influencing factors were identified by studying the related literature, background of the study, and interviews with some of Tejarat bank’s managers and authorities. Then, by performing a field study, it was attempted to ask Tejarat bank experts for their opinions in Tehran as the statistical population of the study. After analyzing data and testing measures using T- student test, it was finally found that all recognized variables and factors influence banking efficiency. Results obtained from Analytic Hierarchy Process (AHP)-based statistical studies and analyses indicated that among the main criteria, the criteria of hardware, software, and working systems are the most important, followed by manpower; financial tools and attitudes have the lowest priority. Also, regarding sub-criteria, the sub-criteria of customers-specific convenient facilities, targeted marketing and advertisement of products and services had the highest rank

Identification and prioritization of efficiency-influencing factors in banking using MADM technique (Case study: Tejarat Bank)

The present study is an attempt to identify and prioritize efficiency-influencing factors in banking system based on Analytic Hierarchy Process (AHP) and (topsis), performed by considering comments and remarks of Tejarat bank experts in Tehran. For this purpose, first the most important efficiency-influencing factors were identified by studying the related literature, background of the study, and interviews with some of Tejarat bank’s managers and authorities. Then, by performing a field study, it was attempted to ask Tejarat bank experts for their opinions in Tehran as the statistical population of the study. After analyzing data and testing measures using T- student test, it was finally found that all recognized variables and factors influence banking efficiency. Results obtained from Analytic Hierarchy Process (AHP)-based statistical studies and analyses indicated that among the main criteria, the criteria of hardware, software, and working systems are the most important, followed by manpower; financial tools and attitudes have the lowest priority. Also, regarding sub-criteria, the sub-criteria of customers-specific convenient facilities, targeted marketing and advertisement of products and services had the highest rank

Identification and prioritization of efficiency-influencing factors in banking using MADM technique (Case study: Tejarat Bank)

The present study is an attempt to identify and prioritize efficiency-influencing factors in banking system based on Analytic Hierarchy Process (AHP) and (topsis), performed by considering comments and remarks of Tejarat bank experts in Tehran. For this purpose, first the most important efficiency-influencing factors were identified by studying the related literature, background of the study, and interviews with some of Tejarat bank’s managers and authorities. Then, by performing a field study, it was attempted to ask Tejarat bank experts for their opinions in Tehran as the statistical population of the study. After analyzing data and testing measures using T- student test, it was finally found that all recognized variables and factors influence banking efficiency. Results obtained from Analytic Hierarchy Process (AHP)-based statistical studies and analyses indicated that among the main criteria, the criteria of hardware, software, and working systems are the most important, followed by manpower; financial tools and attitudes have the lowest priority. Also, regarding sub-criteria, the sub-criteria of customers-specific convenient facilities, targeted marketing and advertisement of products and services had the highest rank

Global, regional, and national incidence of six major immune-mediated inflammatory diseases: findings from the global burden of disease study 2019

BACKGROUND: The causes for immune-mediated inflammatory diseases (IMIDs) are diverse and the incidence trends of IMIDs from specific causes are rarely studied. The study aims to investigate the pattern and trend of IMIDs from 1990 to 2019. METHODS: We collected detailed information on six major causes of IMIDs, including asthma, inflammatory bowel disease, multiple sclerosis, rheumatoid arthritis, psoriasis, and atopic dermatitis, between 1990 and 2019, derived from the Global Burden of Disease study in 2019. The average annual percent change (AAPC) in number of incidents and age standardized incidence rate (ASR) on IMIDs, by sex, age, region, and causes, were calculated to quantify the temporal trends. FINDINGS: In 2019, rheumatoid arthritis, atopic dermatitis, asthma, multiple sclerosis, psoriasis, inflammatory bowel disease accounted 1.59%, 36.17%, 54.71%, 0.09%, 6.84%, 0.60% of overall new IMIDs cases, respectively. The ASR of IMIDs showed substantial regional and global variation with the highest in High SDI region, High-income North America, and United States of America. Throughout human lifespan, the age distribution of incident cases from six IMIDs was quite different. Globally, incident cases of IMIDs increased with an AAPC of 0.68 and the ASR decreased with an AAPC of −0.34 from 1990 to 2019. The incident cases increased across six IMIDs, the ASR of rheumatoid arthritis increased (0.21, 95% CI 0.18, 0.25), while the ASR of asthma (AAPC = −0.41), inflammatory bowel disease (AAPC = −0.72), multiple sclerosis (AAPC = −0.26), psoriasis (AAPC = −0.77), and atopic dermatitis (AAPC = −0.15) decreased. The ASR of overall and six individual IMID increased with SDI at regional and global level. Countries with higher ASR in 1990 experienced a more rapid decrease in ASR. INTERPRETATION: The incidence patterns of IMIDs varied considerably across the world. Innovative prevention and integrative management strategy are urgently needed to mitigate the increasing ASR of rheumatoid arthritis and upsurging new cases of other five IMIDs, respectively. FUNDING: The Global Burden of Disease Study is funded by the Bill and Melinda Gates Foundation. The project funded by Scientific Research Fund of Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital (2022QN38)

Global, regional, and national burden of disorders affecting the nervous system, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021

BACKGROUND: Disorders affecting the nervous system are diverse and include neurodevelopmental disorders, late-life neurodegeneration, and newly emergent conditions, such as cognitive impairment following COVID-19. Previous publications from the Global Burden of Disease, Injuries, and Risk Factor Study estimated the burden of 15 neurological conditions in 2015 and 2016, but these analyses did not include neurodevelopmental disorders, as defined by the International Classification of Diseases (ICD)-11, or a subset of cases of congenital, neonatal, and infectious conditions that cause neurological damage. Here, we estimate nervous system health loss caused by 37 unique conditions and their associated risk factors globally, regionally, and nationally from 1990 to 2021. METHODS: We estimated mortality, prevalence, years lived with disability (YLDs), years of life lost (YLLs), and disability-adjusted life-years (DALYs), with corresponding 95% uncertainty intervals (UIs), by age and sex in 204 countries and territories, from 1990 to 2021. We included morbidity and deaths due to neurological conditions, for which health loss is directly due to damage to the CNS or peripheral nervous system. We also isolated neurological health loss from conditions for which nervous system morbidity is a consequence, but not the primary feature, including a subset of congenital conditions (ie, chromosomal anomalies and congenital birth defects), neonatal conditions (ie, jaundice, preterm birth, and sepsis), infectious diseases (ie, COVID-19, cystic echinococcosis, malaria, syphilis, and Zika virus disease), and diabetic neuropathy. By conducting a sequela-level analysis of the health outcomes for these conditions, only cases where nervous system damage occurred were included, and YLDs were recalculated to isolate the non-fatal burden directly attributable to nervous system health loss. A comorbidity correction was used to calculate total prevalence of all conditions that affect the nervous system combined. FINDINGS: Globally, the 37 conditions affecting the nervous system were collectively ranked as the leading group cause of DALYs in 2021 (443 million, 95% UI 378–521), affecting 3·40 billion (3·20–3·62) individuals (43·1%, 40·5–45·9 of the global population); global DALY counts attributed to these conditions increased by 18·2% (8·7–26·7) between 1990 and 2021. Age-standardised rates of deaths per 100 000 people attributed to these conditions decreased from 1990 to 2021 by 33·6% (27·6–38·8), and age-standardised rates of DALYs attributed to these conditions decreased by 27·0% (21·5–32·4). Age-standardised prevalence was almost stable, with a change of 1·5% (0·7–2·4). The ten conditions with the highest age-standardised DALYs in 2021 were stroke, neonatal encephalopathy, migraine, Alzheimer's disease and other dementias, diabetic neuropathy, meningitis, epilepsy, neurological complications due to preterm birth, autism spectrum disorder, and nervous system cancer. INTERPRETATION: As the leading cause of overall disease burden in the world, with increasing global DALY counts, effective prevention, treatment, and rehabilitation strategies for disorders affecting the nervous system are needed

Global age-sex-specific mortality, life expectancy, and population estimates in 204 countries and territories and 811 subnational locations, 1950–2021, and the impact of the COVID-19 pandemic: a comprehensive demographic analysis for the Global Burden of Disease Study 2021

Background: Estimates of demographic metrics are crucial to assess levels and trends of population health outcomes. The profound impact of the COVID-19 pandemic on populations worldwide has underscored the need for timely estimates to understand this unprecedented event within the context of long-term population health trends. The Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2021 provides new demographic estimates for 204 countries and territories and 811 additional subnational locations from 1950 to 2021, with a particular emphasis on changes in mortality and life expectancy that occurred during the 2020–21 COVID-19 pandemic period. Methods: 22 223 data sources from vital registration, sample registration, surveys, censuses, and other sources were used to estimate mortality, with a subset of these sources used exclusively to estimate excess mortality due to the COVID-19 pandemic. 2026 data sources were used for population estimation. Additional sources were used to estimate migration; the effects of the HIV epidemic; and demographic discontinuities due to conflicts, famines, natural disasters, and pandemics, which are used as inputs for estimating mortality and population. Spatiotemporal Gaussian process regression (ST-GPR) was used to generate under-5 mortality rates, which synthesised 30 763 location-years of vital registration and sample registration data, 1365 surveys and censuses, and 80 other sources. ST-GPR was also used to estimate adult mortality (between ages 15 and 59 years) based on information from 31 642 location-years of vital registration and sample registration data, 355 surveys and censuses, and 24 other sources. Estimates of child and adult mortality rates were then used to generate life tables with a relational model life table system. For countries with large HIV epidemics, life tables were adjusted using independent estimates of HIV-specific mortality generated via an epidemiological analysis of HIV prevalence surveys, antenatal clinic serosurveillance, and other data sources. Excess mortality due to the COVID-19 pandemic in 2020 and 2021 was determined by subtracting observed all-cause mortality (adjusted for late registration and mortality anomalies) from the mortality expected in the absence of the pandemic. Expected mortality was calculated based on historical trends using an ensemble of models. In location-years where all-cause mortality data were unavailable, we estimated excess mortality rates using a regression model with covariates pertaining to the pandemic. Population size was computed using a Bayesian hierarchical cohort component model. Life expectancy was calculated using age-specific mortality rates and standard demographic methods. Uncertainty intervals (UIs) were calculated for every metric using the 25th and 975th ordered values from a 1000-draw posterior distribution. Findings: Global all-cause mortality followed two distinct patterns over the study period: age-standardised mortality rates declined between 1950 and 2019 (a 62·8% [95% UI 60·5–65·1] decline), and increased during the COVID-19 pandemic period (2020–21; 5·1% [0·9–9·6] increase). In contrast with the overall reverse in mortality trends during the pandemic period, child mortality continued to decline, with 4·66 million (3·98–5·50) global deaths in children younger than 5 years in 2021 compared with 5·21 million (4·50–6·01) in 2019. An estimated 131 million (126–137) people died globally from all causes in 2020 and 2021 combined, of which 15·9 million (14·7–17·2) were due to the COVID-19 pandemic (measured by excess mortality, which includes deaths directly due to SARS-CoV-2 infection and those indirectly due to other social, economic, or behavioural changes associated with the pandemic). Excess mortality rates exceeded 150 deaths per 100 000 population during at least one year of the pandemic in 80 countries and territories, whereas 20 nations had a negative excess mortality rate in 2020 or 2021, indicating that all-cause mortality in these countries was lower during the pandemic than expected based on historical trends. Between 1950 and 2021, global life expectancy at birth increased by 22·7 years (20·8–24·8), from 49·0 years (46·7–51·3) to 71·7 years (70·9–72·5). Global life expectancy at birth declined by 1·6 years (1·0–2·2) between 2019 and 2021, reversing historical trends. An increase in life expectancy was only observed in 32 (15·7%) of 204 countries and territories between 2019 and 2021. The global population reached 7·89 billion (7·67–8·13) people in 2021, by which time 56 of 204 countries and territories had peaked and subsequently populations have declined. The largest proportion of population growth between 2020 and 2021 was in sub-Saharan Africa (39·5% [28·4–52·7]) and south Asia (26·3% [9·0–44·7]). From 2000 to 2021, the ratio of the population aged 65 years and older to the population aged younger than 15 years increased in 188 (92·2%) of 204 nations. Interpretation: Global adult mortality rates markedly increased during the COVID-19 pandemic in 2020 and 2021, reversing past decreasing trends, while child mortality rates continued to decline, albeit more slowly than in earlier years. Although COVID-19 had a substantial impact on many demographic indicators during the first 2 years of the pandemic, overall global health progress over the 72 years evaluated has been profound, with considerable improvements in mortality and life expectancy. Additionally, we observed a deceleration of global population growth since 2017, despite steady or increasing growth in lower-income countries, combined with a continued global shift of population age structures towards older ages. These demographic changes will likely present future challenges to health systems, economies, and societies. The comprehensive demographic estimates reported here will enable researchers, policy makers, health practitioners, and other key stakeholders to better understand and address the profound changes that have occurred in the global health landscape following the first 2 years of the COVID-19 pandemic, and longer-term trends beyond the pandemic