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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Women’s Health Bulletin
- نوع مقاله: Journal Article
- کلمات کلیدی: anxiety,Therapeutics,Empathy,Interpersonal relationships
- چکیده:
- چکیده انگلیسی: Background: Anxiety disorders are psychiatric illnesses that are most common in developing countries. Obesity is thought to be a risk factor for anxiety and intimate relationship disorders. The aim of the present paper was to investigate the effect of compassion-focused therapy on social anxiety and interpersonal relationships among women on an overweight diet 2019-2020.
Methods: The study research design was quasi-experimental with a control group, pre-test, and post-test. We narrowed down 100 women according to the inclusion criteria; among them, we randomly selected 30 women on an overweight diet referring to the diet therapy clinics in Tehran province from December 2019 to April 2020. Afterwards, they were randomly assigned to experimental and control groups. The experimental group (n=15) was treated with compassion-focused therapy for ten weekly 90-minute sessions while the control group (n=15) did not receive any treatment. At the start of the study, after 10 weeks, all participants were tested using the Social Phobia Inventory (SPIN) and the Revised Communication Skills Questionnaire (RCSQ) methods. In addition to descriptive statistics, we used Chi-squared, independent, and dependent t tests to interpret the results; we employed the SPSS-25 program for all the analyses.
Results: According to Mean±SD, there was a significant difference between the experimental (1.41±0.03) and control (2.01±0.43) groups regarding social anxiety and regarding interpersonal relationships there was a significant difference between the experimental (2.50±0.21) and control (1.83±0.21) groups, respectively. The experimental group had significantly lower post-test scores in terms of social anxiety (P=0.04) and interpersonal relationships (P=0.001). Moreover, there was a significant change in the experimental group from the pre-test to the post-test concerning all components of social anxiety (P=0.001) and interpersonal relationships (P=0.001).
Conclusion: The findings showed that compassion-focused therapy could help with overweightness. Therefore, this intervention program is recommended for preventing social anxiety and interpersonal relationships among women on an overweight diet.- انتشار مقاله: 15-04-1399
- نویسندگان: Parichehr Sadr Nafisi,Zahra Eftekhar Saadi,Fariba Hafezi,Alireza Heidari
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Medical Physics
- نوع مقاله: Journal Article
- کلمات کلیدی: Intensity Modulated Radiation Therapy,Quality Control,Film Dosimetry
- چکیده:
- چکیده انگلیسی: Introduction
Intensity Modulated Radiation Therapy (IMRT) has made a significant progress in radiation therapy centers in recent years. In this method, each radiation beam is divided into many subfields that create a field with a modulated intensity. Considering the complexity of this method, the quality control for IMRT is a topic of interest for researchers. This article is about the various steps of planning and quality control of Siemens linear accelerators for IMRT, using film dosimetry. This article in addition to review of the techniques, discusses the details of experiments and possible sources of errors which are not mentioned in the protocols and other references.
Materials and Methods
This project was carried out in Isfahan Milad hospital which has two Siemens ONCOR linear accelerators. Both accelerators are equipped with Multi-Leaf Collimators (MLC) which enables us to perform IMRT delivery in the step-and-shoot method. The quality control consists of various experiments related to the sections of radiation therapy. In these experiments, the accuracy of some components such as treatment planning system, imaging device (CT), MLC, control system of accelerator, and stability of the output are evaluated. The dose verification is performed using film dosimetry method. The films were KODAK-EDR2, which were calibrated before the experiments. One of the important steps is the comparison of the calculated dose with planning system and the measured dose in experiments.
Results
The results of the experiments in various steps have been acceptable according to the standard protocols. The calibration of MLC and evaluation of the leakage through the leaves of MLC was performed by using the film dosimetry and visual check. In comparison with calculated and measured dose, more that 80% of the points have to be in agreement within 3% of the value. In our experiments, between 85 and 90% of the points had such an agreement with IMRT delivery.
Conclusion
The EDR2 films are suitable for quality control of IMRT. According to complexity of the quality control for IMRT, the physicists of each center have to develop specific guidelines according to their equipments and limitations. An accurate treatment planning system with capability of inverse planning is an essential need for IMRT. The result of the planning system has to be compared with experiments in various situations.- انتشار مقاله: 21-07-1390
- نویسندگان: Keyvan Jabbari,Alireza Amouheidari,Shadi Babazadeh
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Catalysis
- نوع مقاله: Journal Article
- کلمات کلیدی: tetracycline,Catalytic activity,NiO,Ammonia precipitation,Ponceau 4R
- چکیده:
- چکیده انگلیسی: Nickel oxide (NiO) nano-size powder is synthesized using nickel (II) acetate tetrahydrate, sodium lauryl sulfate (SLS) and ammonia as precursors. Applied surfactant is anionic surfactant. The sample was characterized by FT-IR, X-ray diffraction (XRD), scanning electron microscopy (SEM). The results obtained confirm the presence of nickel oxide nano-powders produced during chemical precipitation. Evaluation of the catalytic activity of developed nano-NiO particles were carried out using ultraviolet visible spectra. The uv-vis spectra obtained after ultraviolet irradiation in the presence of nickel oxide can indicate the degradation of tetracycline (TC) and dye Acid red -18 (ponceau 4R). The prepared NiO exhibits that 75% of Acid red -18 has been eliminated after 10 min.The results indicate that optimum concentration of NiO catalyst and the best pH for the degradation of AR were 0.5 g L-1 and pH 7, respectively. The best TC degradation results were obtained with 2 g L−1of the photocatalyst at pH 11.
- انتشار مقاله: 30-01-1396
- نویسندگان: Alireza Heidarineko,Azar Bagheri Ghomi
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Behavioral Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: test anxiety,Keywords: Mindfulness,Educational Well-being
- چکیده:
- چکیده انگلیسی: Abstract
Introduction: The present study was aimed to assess the effectiveness of mindfulness on test anxiety and educational well-being in secondary school female students.
Method: The study has been conducted based on a semi-experimental design of pretest-posttest type with a control group and a follow up stage. Forty students were selected based on a purposive sampling method and were assigned to two groups: (control and experimental groups, Each containing 20 individuals) based on a simple randomized method One of the experimental group received mindfulness training for a period of 10 sessions, each lasting for 45 minutes (twice a week). Data analysis was conducted using Multivariate Covariance Analysis (MANCOVA) and ANCOVA’s single-variable analysis method using SPSS software.
Results: The results of MANCOVA showed a positive and significant effect of mindfulness training on test anxiety and academic well-being (p <0.01). Also, the results of treatment in the follow-up test were stable after one and a half months (p <0.01).
Conclusion: According to the findings of this study it can be stated that mindfulness training can help reduce test anxiety and improve academic well-being.- انتشار مقاله: 23-08-1398
- نویسندگان: Sara Jahani,Saeed Bakhtiyar-Pour,Behnam Makvandi,Alireza Heidarie,Parvin Ehteshamzadeh
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Behavioral Sciences
- نوع مقاله: Journal Article
- کلمات کلیدی: empowerment,Organizational Culture,Job satisfaction,Keywords: Organizational Intelligence,Workplace-life Skills
- چکیده:
- چکیده انگلیسی: Abstract Introduction: The present study aimed to determine the effectiveness of organizational intelligence, workplace-life skills, and employee empowerment training on job satisfaction and organizational culture of employees with job stress in the Persian Gulf Star Oil Company (PGSOC). Method: The research method was quasi-experimental with a pretest-posttest design and a control group. The research sample consisted of 80 employees with job stress (20 employees in the experimental group 1 (organizational intelligence training), 20 in the experimental group 2 (workplace-life skills training), 20 in the experimental group 3 (employee empowerment training) and 20 in the control group). these employees were selected by a simple random sampling method. The research tools included Minnesota Job Satisfaction Questionnaire, Denison Organizational Culture Survey, and Rice Job Stress Questionnaire. Multivariate analysis of covariance (MANCOVA) and ANCOVA were used to analyze the data. Results: The results indicated that organizational intelligence, workplace-life skills, and employee empowerment training increased job satisfaction and organizational culture in employees with job stress in experimental groups 1, 2 and 3 in comparison to the control group. Conclusion: Organizational intelligence, workplace-life skills and empowerment training for employees could be effective in increasing job satisfaction and organizational culture.
- انتشار مقاله: 26-12-1398
- نویسندگان: Amin Zamiri,Alireza Heidari,Parviz Asgari,Behnam Makvandi
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Pediatrics
- نوع مقاله: Journal Article
- کلمات کلیدی: anxiety,children,Mindfulness,self-efficacy,Mother,Happiness
- چکیده:
- چکیده انگلیسی:
Background
Children's anxiety disorders not only lead to problems related to themselves but also cause problems and confusion in the family. The present study aimed to investigate the effectiveness of happiness and mindfulness training in promoting the parental self-efficacy in mothers of anxious preschool children.
Materials and Methods: This is an experimental research in terms of method with a pretest-posttest-follow-up design and a control group. The study population included all mothers of preschool anxious children in Shahrekord, Iran in 2018. Using the multistage sampling method, a sample of 45 individuals were selected and assigned randomly to a control and two experimental groups (n=15 per group). The research tools included Spence Children's Anxiety Scale (SCAS), and Parenting Self-Agency Measure (PSAM). Mindfulness (eight 90-minute sessions), and happiness (ten 90-minute sessions) training were conducted on the experimental groups. The control group did not receive any intervention. SPSS (version 24) was further used for data analysis.
Results: The mean age of the participants in the mindfulness training, happiness training and control groups were 34.36±2.59, 36.08±2.63 and 34.20±2.29, respectively. The results indicated that the mean of post-test and follow-up scores were significantly different in the experimental and control groups. Furthermore, the happiness training for the mothers of anxious children was effective in their parenting self-efficacy (P=0.000); and a one-month follow-up in the experimental group indicated that the therapeutic intervention could maintain its intervention effect over time (P=0.000).
Conclusion
Based on the results, mindfulness and happiness training methods could have lasting effects on the parent-child relationship and change the anxious relationship between parent and child, leading to parental self-efficacy.
- انتشار مقاله: 16-02-1399
- نویسندگان: Arjang Fereydooni,Alireza Heidari,Zahra Eftekhar Saadi,Parvin Ehteshamzadeh,Reza Pasha
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of School Health
- نوع مقاله: Journal Article
- کلمات کلیدی: Resilience,Students,Education,Spiritual intelligence,responsibility
- چکیده:
- چکیده انگلیسی: Background: Spiritual intelligence is one of the important and influential variables in many psychological characteristics including resilience and responsibility. Objectives: Based thereon, the present study was conducted with the objective of determining the effectiveness of spiritual intelligence training in responsibility and resilience of secondary high school students in the city of Baghmalek.
Methods: The present study was a semi-experimental study with pretest-posttest design and experimental/control groups. The research population included all secondary high school students from Baghmalek city during 2017 - 2018. Finally, 60 students were selected by the multistage cluster sampling method and randomly assigned to experimental and control groups. Data collection was done using the Connor-Davidson resilience scale (CD-RISC) and Kordlou’s responsibility questionnaire. The experimental group participated in eight 90-min sessions for spiritual intelligence instruction while the control group was placed in a waiting list and did not receive any instructions. After the termination of the sessions, both of the groups were subjected to posttest.
Results: The results indicated that there was a linear significant relationship between the pretest and posttest scores of resilience (F = 56.32, P < 0.001) and the pretest and posttest scores of responsibility (F = 12.98, P = 0.004) in the experimental and control groups. The results of univariate analysis for resilience (F = 15.55, P < 0.001) and responsibility (F = 7.14, P = 0.016) as dependent variables were found significant. Thus, spiritual intelligence instruction increased resilience and responsibility in students.
Conclusions: Spiritual intelligence training could be an appropriate interventional method for enhancing the students’ responsibility and resilience considering the society’s need for committed and flexible students who can resist problems and challenges.- انتشار مقاله: 02-09-1397
- نویسندگان: Ali Javadi Nejad,Alireza Heidari,Farah Naderi,Saeed Bakhtiyar Pour,Fariba Haffezi
- مشاهده
- جایگاه : پژوهشی
- مجله: Environmental Energy and Economic Research
- نوع مقاله: Journal Article
- کلمات کلیدی: reliability,Bayes networks,Fault Tree Analysis,Automatic systems,Fire extinguishing system
- چکیده:
- چکیده انگلیسی: In this study, the application of Bayes networks and fault tree analysis in reliability estimation have been investigated. Fault tree analysis is one of the most widely used methods for estimating reliability. In recent years, a method called "Bayes Network" has been used, which is a dynamic method, and information about the probable failure of the system components will be updated according to the components data. In other words, the Bayes network is generally distributed with primary values and relations between variables. In this research, the reliability of the automatic Environmental detection and fire extinguisher system by water sprinkler system has been estimated by FTA and BAYES NETWORKS, also their comparison has been investigated. The probabilistic calculation and the graphical drawing required for this research has been completed by MATLAB and MICROSOFT BAYES NETWORK software. Finally, the reliability of an automatic water sprinkler system was calculated 0.93 by FTA. By updating the probability of failure and success, this value was changed to 0.89. The reason for the difference can be interpreted by taking into account the third state of the system, i.e., functioning with lower efficiency. The lowest level of reliability relates to a diesel generator that acts as a standby member in the event of a power failure. At the end, suggestions for improving the reliability of the automatic fire sprinkler system provided.
- انتشار مقاله: 18-09-1397
- نویسندگان: Saeed Givehchi,Alireza Heidari
- مشاهده