535 research outputs found
The study of the relationship among career success, career competencies, and knowledge management
Organizations are continually influenced by environmental factors, but today the organizations are located in a different environment compared with the past. Mobility and speedy changes are the main characteristic of this environment. In such an environment, the organizations which have gained more knowledge and use them in their strategies and methods can survive and progress. Knowledge leads to better performance of the organization. Hence, knowledge management and proper use of it is important in order to achieve organizational goals. Knowledge management focuses on power of thought and analysis. Knowledge is thrived and created in human’s mind and will be served and spread based on situations and need. Therefore, the success of knowledge management is achieved when an environment established in an organized pattern. This encourages individuals to create and spread their knowledge. But lack of environmental certainties caused the corporate companies to organize and shape their structures differently. Adoption of strategies, like downsizing, leads to a change in psychological contract. So, in this condition, job security will put organizations to trouble. Organizational boundaries have been intertwined and employees are facing with the new realities of career and it has influenced personal belief about the organization. In such a situation, the knowledge management can process successfully
The study of the relationship among career success, career competencies, and knowledge management
Organizations are continually influenced by environmental factors, but today the organizations are located in a different environment compared with the past. Mobility and speedy changes are the main characteristic of this environment. In such an environment, the organizations which have gained more knowledge and use them in their strategies and methods can survive and progress. Knowledge leads to better performance of the organization. Hence, knowledge management and proper use of it is important in order to achieve organizational goals. Knowledge management focuses on power of thought and analysis. Knowledge is thrived and created in human’s mind and will be served and spread based on situations and need. Therefore, the success of knowledge management is achieved when an environment established in an organized pattern. This encourages individuals to create and spread their knowledge. But lack of environmental certainties caused the corporate companies to organize and shape their structures differently. Adoption of strategies, like downsizing, leads to a change in psychological contract. So, in this condition, job security will put organizations to trouble. Organizational boundaries have been intertwined and employees are facing with the new realities of career and it has influenced personal belief about the organization. In such a situation, the knowledge management can process successfully
Nurses' attitudes towards euthanasia: a cross-sectional study in Iran
Aim: Nurses have an important role in caring for terminally ill patients. They are often confronted with euthanasia but little is known about their attitudes towards it. The present study aimed to examine Iranian Muslim nurses' attitudes towards euthanasia. Methods: In this exploratory cross-sectional study, all qualified registered nurses working in two teaching hospitals (Kashani and Hajar hospitals) in Iran were invited to participate. The Euthanasia Attitude Scale (EAS) was used to assess the nurses' attitude towards euthanasia. Of 266 nurses who fit the criteria, 190 participated in the study (response rate 72.9%); 91.1% (n=173) were female and 8.9% (n=17) were male. Results: In total, 57.4%, 3.2% and 39.5% of nurses reported a negative, neutral and positive attitude to euthanasia respectively. Nurses reported their most negative attitude to the domain `practical consideration' with mean of 2.36 +/- 0.9 and most positive attitude to the domain `treasuring life' with a mean EAS score of 2.85 +/- 0.4. Conclusion: The majority of Muslim nurses were found to have negative attitudes to euthanasia. We recommend that future studies should be conducted to examine Muslim nurses' attitudes to euthanasia in different cultures to determine the role of culture and religious beliefs in attitude to euthanasia
Sexual Self-concept and Its Relationship to Depression, Stress and Anxiety in Postmenopausal Women.
OBJECTIVES
Women in menopause have the more mood swings than before menopause. At the same time seem to sexual self-concept and sexual aspects of self-knowledge has a great impact on their mental health. This study aimed to investigate the sexual self-concept and its relationship to depression, stress and anxiety in postmenopausal women's.
METHODS
In this descriptive correlation research, 300 of postmenopausal women referred to healthcare and medical treatment centers in Abadeh city were selected by convenience sampling method. The information in this study was collected by using questionnaires of multidimensional sexual self-concept and depression anxiety stress scale 21 (DASS-21). For data analysis, SPSS/17 software was used.
RESULTS
The results showed the mean score positive sexual self-concept was 41.03 ± 8.66 and the average score of negative sexual self in women's was 110.32 ± 43.05. As well as scores of depression, stress, and anxiety, 35.67%, 32.33% and 37.67% respectively were in severe level. Positive and negative sexual self-concept scores with scores of stress, anxiety, and depression, of post-menopausal women in the confidence of 0.01, is significantly correlated (P < 0.05).
CONCLUSIONS
Being stress, anxiety, and depression in severe level and also a significant correlation between increased stress, anxiety and depression with negative and weak self-concept of women's, it is necessary to devote more careful attention to mental health issues of women's and have appropriate interventions
Strain Selection and Statistical Optimization of Culture Conditions for 19F Polysaccharide Production from Pneumococcus
Introduction:  Capsular polysaccharides of pneumococci are principle antigenic constituents of vaccines against pneumococci. Enhancing the yield of capsule production decreases costs of these vaccines and increases the vaccine coverage in developing countries. In this study therefore, we aim to optimize the capsule production from serotype 19F pneumococcus in terms of the applied pneumococcal strain and environmental culture conditions.Materials and Methods:  Thirteen serotype 19F Streptococcus pneumoniae strains were screened for the capsule production in modified Hoeprich culture medium using the stains all assay. The optimal ranges of environmental culture conditions for the selected strain were determined using single factor at a time (SFAT) strategy and utilized for the design of experiments based on the response surface methodology (RSM).Results:  S. pneumoniae 82218 showed the highest capsule production, and thus used for further studies. The maximum capsule production (1.364 mg/ml) was attained under optimal conditions (pH 7.26, 35.5 ºC, 30 rpm) predicted by the RSM derived quadratic model. The capsule production under the optimal conditions increased to 1.9 mg/ml using the buffered culture medium. Conclusion:  These results are much higher than those reported for pneumococcal capsule production in published studies [1, 2] and thus can be used to design suitable systems for the serotype 19F capsule production in the vaccine manufacturing process.
Modeling the impact of climate change and land use change scenarios on soil erosion at the Minab Dam Watershed
Climate and land use change can influence susceptibility to erosion and consequently land degradation. The aim of this study was to investigate in the baseline and a future period, the land use and climate change effects on soil erosion at an important dam watershed occupying a strategic position on the narrow Strait of Hormuz. The future climate change at the study area was inferred using statistical downscaling and validated by the Canadian earth system model (CanESM2). The future land use change was also simulated using the Markov chain and artificial neural network, and the Revised Universal Soil Loss Equation was adopted to estimate soil loss under climate and land use change scenarios. Results show that rainfall erosivity (R factor) will increase under all Representative Concentration Pathway (RCP) scenarios. The highest amount of R was 40.6 MJ mm ha(-1) h(-1)y(-1) in 2030 under RPC 2.6. Future land use/land cover showed rangelands turning into agricultural lands, vegetation cover degradation and an increased soil cover among others. The change of C and R factors represented most of the increase of soil erosion and sediment production in the study area during the future period. The highest erosion during the future period was predicted to reach 14.5 t ha(-1) y(-1), which will generate 5.52 t ha(-1) y(-1) sediment. The difference between estimated and observed sediment was 1.42 t ha(-1) year(-1) at the baseline period. Among the soil erosion factors, soil cover (C factor) is the one that watershed managers could influence most in order to reduce soil loss and alleviate the negative effects of climate change.FCT-Foundation for Science and Technology - PTDC/GES-URB/31928/2017; FEDER ALG-01-0247-FEDER-037303info:eu-repo/semantics/publishedVersio
Yield and morpho-physiological traits of tobacco (Nicotiana tabacum L.) as affected by azotobacter, mycorrhizal symbiosis and biochar application
The present study was performed to evaluate the effect of mycorrhizal symbiosis and azotobacter with the application of biochar on tobacco growth parameters, yield and nicotine content under rainfed conditions for two growing seasons (2016-2017 and 2017-2018). The factorial experiment was performed based on a randomized complete block design with four replications and three factors including biochar at three levels (0, 4 and 8 ton/ha), mycorrhizal fungi and Azotobacter chroococcum each one at two levels (without and with application). Results showed that biochar application had a significant and positive effect on all evaluated parameters. However, there was no statistically significant difference between 4 and 8 tons per hectare of biochar in yield. Mycorrhizal symbiosis had a significant effect on relative water content. Application of azotobacter had a positive and significant effect on growth parameters, yield and nicotine content under rainfed conditions for two growing seasons (2016-2017 and nicotine content. The greatest effect of azotobacter with a 17% increase was on leaf nicotine content. Whereas tobacco dry yield in rainfed conditions is lower, the combined use of biochar and these biofertilizers can be considered a desirable solution. Then in terms of economic aspects, the use of 4 tons biochar per hectare along with the use of mycorrhiza and azotobacter to achieve acceptable yield while maintaining chemical quality in tobacco farms is recommended
Prevalence of attention deficit hyperactivity disorder in elementary school students in Hamadan
ABSTRACT Background and aims: Attention Deficit Hyperactivity Disorder (ADHD) is the most prevalent disorder in children. Due to the importance of the disorder in children and its complications, this study aimed to assess the relation of the disorder with demographic factors in students of schools located in the Hamadan city, west of Iran. Methods: In this study, 1000 students were selected through randomized cluster sampling from Hamadan elementary schools in 2014. Data were gathered using Conners questionnaire. Conners questionnaire completed by teachers and parents. Results were analyzed using SPSS statistical software through Chi-square, Pierson correlation coefficient, and T-test. Results: The overall ADHD prevalence rate in this sample was determined to be 11.3. For boys, this prevalence rate of ADHD was 19.4 and had significant difference with girls (P<0.01). The prevalence of ADHD in families with 1-3 children was 8.7 while it was 15.8 in families with 4 children and more. The difference was statistically significant (P=0.003). There was also higher prevalence among children of parents with lower level of education. Conclusion: ADHD is prevalent in community of Iran. Results indicated that diagnosis must be based on exact and persistent psychological symptoms. It is necessary that schools authorities in region 1 and 2 of Hamadan city take steps to find the cases and manage them
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