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Author(s): 

Sheikhahmadi Kazhal | Yamani Doozi Sorkhabi Mohammad | Pardakhti Mohammad Hassan | Ferasatkhah Maghsoud

Issue Info: 
  • Year: 

    2024
  • Volume: 

    6
  • Issue: 

    1
  • Pages: 

    60-68
Measures: 
  • Citations: 

    0
  • Views: 

    53
  • Downloads: 

    0
Abstract: 

Introduction: Academic faculty members need to emphasize ethical principles in order to improve higher education, with the understanding of this importance, the current research was conducted with the aim of designing the ethical model of academic faculty members in Iran's higher education. Material & Methods: This research is a type of qualitative study that uses foundational data theory. The participants, including experts and faculty members of the country's public universities, who were responsible for the promotion of academic members, were selected as key informants through a targeted sampling method of 45 people. Data were collected through semi-structured interviews. The reliability and validity of the data were obtained from the two methods of reviewing the participants and recoding by experts. Data were analyzed by open, central and selective coding. Results: The results showed that the moral model of faculty members in Iran's higher education is explained in 10 main categories and 27 subcategories. Major and core categories in the form of 6 dimensions of causal conditions including (individual factors, organizational factors), core (cultural-educational, educational ethics, research ethics, scientific-executive), background conditions (higher education policies, moral activism), intervening conditions (environmental factors), strategies (micro level-university, macro level-higher education) and consequences (individual and organizational) were elevated to a higher abstract level and finally the research paradigm model was presented. Conclusion: The regulations for the promotion of academic staff members in Iran require a detailed revision of the content with an ethical and qualitative approach in order to make the indicators of the promotion regulations efficient and effective.

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Issue Info: 
  • Year: 

    2023
  • Volume: 

    2
  • Issue: 

    71
  • Pages: 

    39-49
Measures: 
  • Citations: 

    0
  • Views: 

    83
  • Downloads: 

    0
Abstract: 

The purpose of the present study was to investigate the effect of generative learning teaching based to pattern cognitive Load on the memorization math of 7th grade students of in the academic year of 2021- 2022. The research method is quasi-experimental with pre-test and post-test with four groups: two control group and two experimental groups. The statistical population of the study consisted of all 7th grade male and female students of District 2 of Mashhad city that 112 person sample was selected by single stage cluster sampling method. The subjects in the experimental group involved in generative learning based to cognitive Load in 16 sessions and the control group did not receive any interventions. The research instrument consisted of a 20-questions researcher-made test. To analyze the obtained data, Multivariate analysis of covariance and SPSS version 24 software were used. The results showed that generative learning teaching based to approach cognitive Load have a positive and significant effect on 7th grade students' memorization math. Based on the findings, it can be concluded that one of the effective training on math memorization students is the use of generative learning on the based load cognitive pattern.

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Issue Info: 
  • Year: 

    1383
  • Volume: 

    6
Measures: 
  • Views: 

    822
  • Downloads: 

    0
Abstract: 

شناورهای اثر سطحی (SES) از جمله پیشرفته ترین طرحهای دریایی می باشند. این شناورها با استفاده از اثر سطح و با ایجاد لایه ای از هوای فشرده به راحتی بر روی سطح آب به حرکت در می آیند. به همین دلیل بکار گیری تجهیزات دفاعی زیر سطحی در رابطه با نابودی این شناورها بسیار مشکل و ناممکن می باشد. مینهای فشاری، مغناطیسی و حتی اژدرها کاربری چندانی در تهدید شناورهای اثر سطحی نداشته و به همین جهت از این دسته شناورها در زمینه مقاصد نظامی استفاده می گردد. در این مقاله ضمن بررسی ویژگیهای ساختاری شناورهای SES به تحلیل ویژگیهای این شناورها در مقابله با تهدیدات زیر سطحی پرداخته می شود.

Yearly Impact:   مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

Hassan Mirzahosseini Hassan Mirzahosseini | Tabarraie Ramin | Mirzahosseini Hassan

Issue Info: 
  • Year: 

    2022
  • Volume: 

    1
  • Issue: 

    68
  • Pages: 

    129-153
Measures: 
  • Citations: 

    0
  • Views: 

    94
  • Downloads: 

    0
Abstract: 

The current research was conducted with the aim of the effect of attachment style on emotion regulation with the mediating role of identity style. The research method was descriptive and structural equation analysis. The statistical population of the research was all second year high school students of Kashan city in the academic year of 1400-1401, of which 500 people were selected by random cluster method. Data were collected based on three questionnaires: Gross & Jan (2003) Emotional Regulation Inventory, Identity Style Scale (6G-ISI) and Collins and Reid (1990) Attachment Style Questionnaire. The data are obtained by structural equation modeling and using Laserl 8.8 and 26 spss software. analyzed. Based on the results, secure attachment style at a significance level of 0.01, avoidant attachment style at a significance level of 0.05, and ambivalent attachment style at a significance level of 0.01 directly predicted emotion regulation. Among the three attachments, secure attachment style predicted emotion regulation at a significant level of 0.01, with the mediation of identity styles. Informational identity style at a significance level of 0.01, confused identity style at a significance level of 0.05 directly predicted emotion regulation. Among the three attachments, only the secure attachment style at a significance level of 0.01 had a significant role in predicting the normative identity style. According to the results of this study, emotion regulation is one of the most important constructs of educational psychology and an important factor in determining mental health and successful performance. It is in education that the factors affecting emotion regulation and its antecedents should be identified. Planning for training and holding educational workshops in this field in schools is suggested for students.

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Issue Info: 
  • Year: 

    1401
  • Volume: 

    40
  • Issue: 

    663
  • Pages: 

    152-158
Measures: 
  • Citations: 

    0
  • Views: 

    229
  • Downloads: 

    0
Abstract: 

مقدمه: از مهم ترین عوامل تاثیرگذار بر انجام یک ارزشیابی مناسب، وجود ابزاری اثربخش است که بتواند به درستی، اهداف مورد نظر را بسنجد. یک مطالعه ی مروری نشان داد که ابزارهای موجود، همه حوزه های آموزش بالینی را به طور جامع پوشش نمی دهند. این مطالعه به منظور بررسی روایی و پایایی نسخه ی فارسی پرسش نامه ی effect در جامعه ی دستیاران دانشگاه علوم پزشکی اصفهان انجام شد. این ابزار در دانشگاه علوم پزشکی رادبود در هلند طراحی و تایید شده است. روش ها: داده ها به صورت مجازی در بازه ی زمانی 1397-1398 جمع آوری شد. برای افزایش روایی صوری تیم 3 نفره از متخصصان مرتبط حضور داشتند. روایی محتوا نیز توسط 10 نفر از متخصصین در 3 حوزه ی سادگی، مرتبط بودن و واضح بودن انجام گرفت. در تعیین اعتبار سازه، 100 پرسش نامه توسط دستیاران 10 رشته ی مختلف تکمیل شد و تحلیل عاملی تاییدی انجام گرفت. پایایی گویه ها نیز توسط آلفای کرونباخ مورد ارزیابی قرار گرفت. یافته ها: روایی محتوایی در دو مرحله توسط تیم های 3 و 10 نفره از متخصصین مربوطه تایید گردید. مدل تحلیل عاملی تاییدی نشان می دهد که شاخص ها و سوالات مربوطه در سطح معنی داری قابل قبولی قرار دارند. مدل سازی معادلات ساختاری نشان می دهد که هیچ یک از سوالات از مدل حذف نمی شود. آلفای کرونباخ متغیرها برای کل ابزار، 85/0 محاسبه شد. نتیجه گیری: این پژوهش نشان داد که نسخه ی فارسی پرسش نامه ی effect روایی و پایایی قابل قبولی را ارایه می کند و برای ارزیابی کیفیت آموزش بالینی در مقطع دستیاری پزشکی در ایران قابل استفاده است.

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Issue Info: 
  • Year: 

    2023
  • Volume: 

    53
  • Issue: 

    3
  • Pages: 

    182-191
Measures: 
  • Citations: 

    0
  • Views: 

    159
  • Downloads: 

    46
Abstract: 

One of the important issues in the production of concrete is environmental variability that affects the concrete and elements constructed from this material. Due to the importance of different characteristics of concrete in short- and long-term conditions, this article aims to investigate the influence of initial temperature conditions of self-compacting concrete on its long-term characteristics and determine the initial optimal temperature of concrete. For these purposes, several experiments under three temperature conditions of 5, 20, and 40 degree-of-Celsius were conducted to evaluate the rheology and mechanical properties of fresh concrete in the range of 7 and 28 days. In these experiments, alternative mineral admixtures of cement such as micro-silica, fly ash, and zeolite were used to build the concrete specimens. Results demonstrate that the mechanical properties of the specimens increase with increasing initial temperature in the short term, while such properties significantly decrease in the long term compared to the specimens constructed under lower initial temperature. Moreover, the fluidity of self-compacting concrete increases with increasing initial temperature.

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Journal: 

Plant Protection

Issue Info: 
  • Year: 

    2023
  • Volume: 

    46
  • Issue: 

    2
  • Pages: 

    119-127
Measures: 
  • Citations: 

    0
  • Views: 

    125
  • Downloads: 

    22
Abstract: 

The effect of number of mating on longevity and fecundity of the predatory mite Euseius scutalis Athias-henriot was studied under laboratory conditions (at 25±1 ºC, 60 ± 5 % RH and 16: 8 L:D). Newly emerged adult females (less than 24 h) were held individually in a 9 cm arena. A male (less than 24 h) remained with a female for limited periods of time or continuously. Four treatments were designed: virgin females, single mated females, multiple mated females (female had access to a male every five days), multiple mated females (female had continuous access to a male). Mating was necessary for oviposition. Virgin females lived the longest (25 days). However, no significant differences were found among longevity of mated females (12- 15). Similarly, no significant differences were detected among fecundity of females with different numbers of mating (18- 22 eggs). Sex ratio was significantly female-biased in progeny of single mated females and multiple mated females with periodic access to male. However, no significant difference was found in sex ratio of progeny of multiple mated females with continuous access to male.

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Issue Info: 
  • Year: 

    2006
  • Volume: 

    30
  • Issue: 

    1-2
  • Pages: 

    117-124
Measures: 
  • Citations: 

    0
  • Views: 

    1307
  • Downloads: 

    0
Abstract: 

Introduction: Various factors affect the distribution of stress and fracture resistance of restored teeth by post and core. One of the major causes is the remaining body of the teeth, (ferrule) which was embraced by crown. The purpose of this study was to asses the effect of developing the ferrule via a crown lengthening procedure, on the fracture strength of endodontically treated teeth. Materials & Methods: 24 recently extracted second premolar of mandible was selected in this descriptive study and their crowns were cut so far that no more than 15 mm of the root remained. Then they were divided randomly into two groups of 12 and their canals were undergone rootcanal therapy. In the first group, a post–core and full metal crowns were made without ferrule, while in the second group with changing in the optimum ratio of the crown/root height, 2mm ferrule was designed and then the cast post- core and full-metal crowns were made. Finally, in both groups, a compressive load with 1 mm per minute speed and an angle to 150 on the long axis of the tooth was applied. The force was exerted in mesial marginal ridge, in 7 teeth and on the buccal cusp edge in the other 5 teeth to induce fracture. Statistical analysis of the data was performed with student t-test, chi-square and two-way ANOVA analyses. Results: 1. There was a significant difference between the mean of fracture load in the ferrule and non-ferrule groups (P<0.001). 2. No significant difference in the mean fracture load was observed when the load was applied in the buccal-cusp edge instead of mesial marginal ridge. Conclusion: By adding a 2 mm cervical ferrule on top of the finishing line of mandibular premolars restored by cast post-core and crown, we can increase the fracture resistance of these teeth.

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Issue Info: 
  • Year: 

    2019
  • Volume: 

    18
  • Issue: 

    2
  • Pages: 

    12-25
Measures: 
  • Citations: 

    0
  • Views: 

    451
  • Downloads: 

    0
Abstract: 

The coastline, as a border where the water flow is relatively impermeable, can change the flow pattern and therefore, the study of its hydrodynamic role is undeniable. in coastal engineering studies and even wet ecosystems even it is simple. In this study, using three-dimensional simulations in the numerical model environment of MIKE 3, the Danish Hydrodynamic Institute, two types of three dimensional simulations have been proposed using Navier Stokes equations to investigate the role of the coastline in rectangular and curved basins. In both simulations, it is assumed that the characteristics of Qeshm's tidal channel are scientifically established. This study clearly shows that the uniform velocity pattern in a rectangular basin changes with the curvature of coastline on the curved basin. The tightness in the curvature of the basin causes an increase in speed (about 0. 05 m/s) in accordance with the principle of mass conservation. The opening after the turn of the basin causes a decrease of 0. 1 m/s (0. 4 m/s in the rectangular basin to 0. 3 m/s in a curved basin, equivalent to 25% speed). Another point to consider is the role of water level changes. There is not much difference in the speed pattern between Higher High Water (HHW) and Lower Low Water (LLW) in Neap tide, but in the case of Spring tide where the water level is higher, the difference is 0. 1 m/s in the rectangular basin and 0. 2 m/s in the curved shape basin.

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