m. h. hosseini

Steel moment frames are among the structure systems for bearing gravity and lateral loads, which are more common in high-rise structures due to their lower weight than reinforced concrete moment frames. The ductility capacity of steel moment frames depends on the types of their connections, hence the moment connections are particularly important. Nowadays, in the American Steel Codes and the Iranian National Building Regulations, models have been introduced as Prequalified Connections. The ConXL modern moment connection is one of these connections and in this research that is under study. This connection is designed to create a cost-effective and resistant moment frame that allows quick installation of the frame by eliminating workshop welding. Also, WUF-W, which is known as a rigid connection in domestic codes, is a conventional connection in construction and can be a suitable reference for comparison with ConXL, which is less known in terms of seismic behavior. To do this comparison, fragility curves, which are suitable tools for determining the probability of vulnerability, are used. For this purpose, fragility curves are determined for both ConXL and WUF-W connections. The criterion of this comparison is the performance levels of IO and CP in the fragility curves of joints in a special two-dimensional bending frame. Finally, after comparing the seismic behavior of the two mentioned connections and expressing the more favorable performance and ease of implementation, it can be concluded that the modern ConXL Connection is a more suitable option for special moment frames.

Measuring the level of participation of university faculty members in management affairs is essential for planning to improve productivity in educational environments. This study was conducted to determine faculty members' participation in management decisions in different faculties of Hamadan University of Medical Sciences.

In this cross-sectional analytical study conducted in 2020, a standard participation questionnaire was completed by all full-time non-clinical faculty members. The collected data were transferred to SPSS. In addition to descriptive statistics, ANOVA, independent samples t-test, and Pearson's correlation coefficient were used for data analysis.

The mean age of the participants was 41.70±7.82 years.60% of the participants were men and 40% were women. In the field of education, the mean of the faculty members' views with managerial positions regarding the collaborative nature of decision making in various subjects was minimum 4.93±1.24 and maximum 5.94±1.10, which was significantly higher compared to the views of other members (P<0.05). The highest mean of the participation score in different fields were found 5.48±1.25, in the educational field and the lowest were in the administrative and financial field 2.69±1.99.

Since higher levels of participation in decision making in academic environments bring job satisfaction, commitment, and higher performance, it is recommended to adopt appropriate strategies to provide more opportunities for faculty members’ participation in the management affairs of faculties in all areas.

In decentralized construction projects, costs are mostly related to investment, material, holding, logistics, and other minor costs for implementation. For this reason, simultaneous planning of these items and appropriate scheduling of activities can significantly reduce the total costs of the project undertaken. This paper investigates the decentralized multiple construction projects scheduling problem with the aim of minimizing 1) the completion time of the construction projects and 2) the costs of project implementation. Initially, a bi-objective integer programming model is proposed which can solve small-size problems using the method. Then, a Priority Heuristic Algorithm (PHA), Non-dominate Sorting Artificial Bee Colony (NSABC) and Non-dominate Sorting Genetic Algorithm II (NSGA-II) are developed to handle large-size problems using a modified version of Parallel Schedule Generation Scheme (PSGS). The computational investigations significantly reveal the performance of the proposed heuristic methods over exact ones. Finally, the proposed methods are ranked using TOPSIS approach and metric definition. The results show that NSGA-II-100 (NSGA-II with 100 iterations), NSABC-100 (NSABC with 100 iterations) and PHA are ranked as the best known solution methods, respectively.

The stress of war is not limited to the wartime period, but also triggers chronic and acute reactions after the war, characterized by psychological and physical damage. The aim of this study was to determine the effectiveness of anger management training on resilience, happiness and general health of veterans’ sons.

The research was quasi-experimental with pretest and posttest with case and control groups. The number of samples required for this study was 30 male students of the veteran child of the second high school of Shahed school in Kerman in 2018, in which 15 people were randomly assigned to the case group and 15 to the control group. Anger control training was conducted for 12 sessions in the case group. To collect the required data in both pre-test and post-test stages, 4 trait-anger expression questionnaires (STAXI-2), Conor-Davidson Resilience Questionnaire (C-DRS), Patterson Happiness Questionnaire and General Health Questionnaire were used. The collected data were analyzed using analysis of covariance and SPSS 23 software.

There was a significant difference between case and control groups in terms of resilience, happiness and general health scores after presenting the independent variable (anger management training) (p<0.001), so that the effect of anger control on resilience variable 60%, Happiness 41% and general health 65%.

Anger management training is effective in increasing resilience, happiness and general health of veterans’ sons.

Introdution: Type II diabetes is regarded as the most common form of diabetes. Such factors as genetic history, hypertension, obesity and being overweight involve important risk factors for this disease. Hence, this study aimed to determine the prevalence and associated factors of Type II diabetes within patients aged above 30 years in Meybod. In this descriptive cross-sectional study, the data were obtained from a total of 14,276 cases of diabetes and hypertension undergoing screening plan who aged 30 years and above 30. In order to analyze the study data, SPSS software was utilized applying Chi-square test. The prevalence of type II diabetes and pre-diabetic individuals were calculated 12% and 9.5% respectively. The prevalence of type II diabetes was reported significantly higher in rural, female and older individuals. Moreover, the prevalence was reported to be significantly higher within individuals with a history of being overweight, obesity, hypertension, family diabetes, gestational diabetes, abortion, stillbirth or bearing infants over 4000 gram. The study findings revealed that regarding the high prevalence of diabetes in this city, prevention programs as well as early detection of the disease need to be enhanced. Moreover, the particular needs of women, the elderly residents and city inhabitants should be more emphasized. Individuals with a history of family diabetes, gestational diabetes, abortion, stillbirth or bearing infants over 4000 grams should be highly prioritized and more meticulously studied.

The purpose of this study was to compare shear bond strength (SBS) of orthodontic brackets bonded to enamel prepared by Er:YAG laser with two different powers and conventional acid-etching. Forty-five human premolars extracted for orthodontic purposes were randomly assigned to three groups based on conditioning Group 1- conventional etching with 37% phosphoric acid; Group 2- irradiation with Er:YAG laser at 1 W; and Group 3- irradiation with Er:YAG laser at 1.5 W. Metal brackets were bonded on prepared enamel using a light-cured composite. All groups were subjected to thermocycling process. Then, the specimens mounted in auto-cure acryle and shear bond strength were measured using a universal testing machine with a crosshead speed of 0.5 mm per second. After debonding, the amount of resin remaining on the teeth was determined using the adhesive remnant index (ARI) scored 1 to 5. One-way analysis of variance was used to compare shear bond strengths and the Kruskal-Wallis test was performed to evaluate differences in the ARI for different etching types. The mean and standard deviation of conventional acid-etch group, 1W laser group and 1.5W laser group was 3.82 ± 1.16, 6.97 ± 3.64 and 6.93 ± 4.87, respectively. The mean SBS obtained with an Er:YAG laser operated at 1W or 1.5W is approximately similar to that of conventional etching. However, the high variability of values in bond strength of irradiated enamel should be considered to find the appropriate parameters for applying Er:YAG laser as a favorable alternative for surface conditioning.

Neospora caninum, an obligate intracellular protozoan parasite, is recognized as a major cause of abortion in cattle, while limited information is presently available on the seropreva­lence of Neospora antibodies in horse's worldwide. The aim of the present study was to de­termine serologic prevalence of Neospora infection in horses in Iran. Sera from 150 horses from Mashhad suburb in Razavi Khorasan Province, northeast Iran were examined for antibodies to Neospora spp. using Neospora modified direct agglutina­tion test (N-MAT). Antibodies to this parasite were detected in 45 (30%) of the examined serum samples. Thirty four percent of the samples had titer of 1:40 while then reduced to 30% when 1:80 serum dilution was applied as significant cut off titer. This study is the first investigation carried out on the Neospora in horses in Iran and indi­cates that horses in Iran are exposed to this parasite.