Objective: The present study was conducted with the aim of effective school-based self-control skill training on increasing psychological hardiness and self-efficacy of male students of the first secondary level.Method: This research is a semi-experimental study with a pre-test-post-test design with a control group. The statistical population of the present study included male students of the first secondary school in Qom city, 30 students were selected using the available sampling method and divided into two groups of 15 people completely randomly. Students in the experimental group participated in 8 sessions of the school-based self-control training program, and the control group did not receive training. Before and after the implementation of the intervention, both groups were evaluated using the psychological hardiness scale of Lang and Goulet (2003) and the self-efficacy scale of children and adolescents (SEQ-C). The data was analyzed using spss-22 software and through repeated measures analysis of variance test.Findings: The results showed that school-based self-control skill training has a significant effect on increasing students' psychological hardiness and self-efficacy (P<0.01). Conclusion: The findings of the present study indicated that school-based self-control skill training can be an effective intervention in increasing psychological hardiness and self-efficacy in students.

Background and aim: Inadequate bond strength of resin cements to dentin appears to be a typical cause of failure in retention of fiber posts. In restoring endodontically treated teeth with fiber posts the cement-dentin interface is the weakest link. This study aims to compare the effect of self-etch and self-adhesive resin cements on shear bond strength of fiber posts to dentin.Materials and methods: This in vitro experimental study included 40 mandibular premolars with a single canal. All samples received standardized endodontic treatment after meeting the inclusion criteria. They were randomly divided into four groups and a post space was prepared in each sample. A size two Match post RTD fiber post was cemented into each sample using CoreCem (RTD) in group A, Panavia F2 (Kuraray) in group B, Bis Cem (Bisco) in group C and Maxcem Elite (Kerr) in group D as cementing agents. All samples were then cut into two pieces. Each specimen was loaded with equal force using a Universal Testing Machine. The load was applied from the apical to the coronal portion of each sample until fracture occurred. The mean shear bond strength for two each group was recorded and statistically analyzed with ANOVA (one way) and Dunnett’s tests using SPSS.Results: The mean shear bond strength was found to be as follows: Group A: (12.66 ±3.77) MPa Group B: (14.61±4.18) MPa Group C: (7.26±2.49) MPa Group D: (6.68±3.17) Mpa, Significant difference was demonstrated between shear bond strength of four groups (P=0.001). Mean bond strengths of resin cements in group A and B were not statistically different. Same results were shown when comparing cements in group C and D. However, cements in group A and B (self-etch) provided stronger bonds to dentin compared to group C and D (self-adhesive), the difference being statistically significant (P<0.05).Conclusion: The use of self-etch resin cements results in higher shear bond strength to dentin compared to self-adhesive resin cements.

An overview (a review of reviews) is a new type of evidence synthesis that has been recently considered. Due to the increasing number of systematic reviews, overviews compare the data of different interventions obtained from systematic reviews and provide decision-makers with a broader summary of current information. By comparing the results of systematic reviews and identifying their contradictions during an overview, health decision-makers face the latest and most reliable results (1, 2). . .

Let G is n− vertex graph. In 1996, Reed conjectured that g (G) £ [n/3] for every connected 3− regular G. In this paper, we introduce an algorithm in computer algebra system of MAPLE such that, by using any graph as input, we can Calculate domination number g(G) and illustrated set of all dominating sets. It important that these sets choose among between (n g(G)) sets.

Purpose: The present research was conducted to explain creativity, based on self-management and creative self-efficacy by mediating of educational engagement in elementary school students with learning Difficult. Method: The research method was a descriptive-correlation method with a path analysis design in the form of structural equations. The statistics society was included of students in 4th to 6th grads with learning problems that were engaged to educate in primary schools of Arak city in the academic year of 1400-1401, which were selected 200 boys’ and girls’ students (100 each gender) with learning problems as the research sample by using the purposeful sampling method. Data gathering tools were include Colorado Questionnaire, Shaffer's creativity questionnaire, Karwowski creative self-efficacy, Houghton and Neck's self-management, and Wilborn's educational engagement, which were completed by teachers and parents of students with learning Difficult. The collected data were analyzed by using Pearson's correlation coefficients and path way analysis in SPSS and AMOS software. From structural equations modeling method was used to investigate the research model fitness.  Results: The findings showed that the research model have an agreeable fitness. Also acquired coefficients between variables parameters showed that meaningful direct effect of self-management dimensions and creative self-efficacy on educational engagement and creativity. In this means, by increasing the self -management and creative self-efficacy, there is a positive change in the degree of educational engagement and creativity in students with learning problems. So, the relationships between the variables of the model drawn in this research were confirmed.

Background & Aim: The aims of this study were to assess the impact of dentofacial relationships and sex on: self evaluation and self satisfaction in 12-15 years old students in Qazvin in 2003, and to determine the correlation between type of school and variables determining malocclusion with self evaluation and self satisfaction.Method &Materials: A cross - sectional study two stage - cluster sampling was carried out among 120 students (58 girls, 62 boys) aged 12 - 15 years who attended 4 guidance - schools (2 public, 2 private) in Qazvin in 2003. All samples were examined clinically and a questionnaire was used to assess their self evaluation and self satisfaction. Data were analyzed by the means on Chi - square and Fisher exact test.Results: Overjet, crowding and severe maxillary irregularity were significantly related to self evaluation. Overjet and severe mandibular irregularity were related to self satisfaction. No sex difference was found. Type of school was not a significant factor affecting self evaluation and self satisfaction. High level of self satisfaction has been found in the students. However, the majority of student had mid level of self evaluation.Conclusion: Overjet is the only variable significant in 12-15 year old students affecting both self evaluation and self satisfaction. Subjective esthetic measure should be incorporated to clinical esthetic criteria. Good communication between dentist and patient is important in analyzing and planning esthetic treatment according to individual needs and desires.

A number of methods have been developed to choose the best capital investment projects such as net present value, internal rate of return and etc. Internal rate of return method is probably the most popular method among managers and investors. But despite the popularity there are serious drawbacks and limitations in this method. After decades of efforts made by economists and experts to improve the method and its shortcomings, Magni in 2010 has revealed a new approach that can solves the most of internal rate of return method problems. This paper present a new method which is originated from Magni’s approach but has much more simple calculations and can resolve all the drawbacks of internal rate of return method.

Investment principles and methods of study and implementation, In order to select the best investment plan, it is done according to the rate of return and risk. General risk to the uncertainty arising from changing market conditions, such as: Changes in asset prices, interest rates, market volatility and market liquidity risks which led to the trading portfolio returns or financial institution will be valuable assets. In efficient markets for risk calculation, the standard deviation of market index returns is Calculated.With regard to research performance in Tehran Stock Exchange, the standard deviation of these variables can easily be used as a risk. In order to study the time series model of Box - Jenkins was used to Calculate risk. Then Calculate the standard deviation of return and standard deviation of variable prediction errors Box - Jenkins was compared.And finally the general risk associated with market price on total revenue was reviewed.The results of this study show that the classical calculation of general risk factors such as standard deviation Calculated risk could be the answer. The relation was also significant is the risk and cost. So investors in predicting the risk of price per share on revenue of use.

One of the subjects that have been proposed in rhetoric books for a long time is the subject of plagiarism.This issue, like other concerns; in literary criticism discussions has a special position. This subject matter and its types and instances should be analyzed and studied carefully. One of the most important branches of plagiarism is in the field of imagination and imagery of poetry. A great extent of the poetic images created by a poet has been exploited and repeated by another poet. Interestingly enough, poets who have created poetic texts and certain poetic images, have used their own creation themselves repeatedly in their other works, to the point that these images lose their originality and become cliché. Farokhi Sistani -4th and 5th century poet- is one of the poets whose poems are obvious cases of the issue of self-plagiarism. The purpose of the present paper is studying some instances of this case.