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.

Apart from the nature of police job, a lot of mental pressures have been. Identified which originate from broadness of social and organizational communications in terms of type of the geographical area under their coverage and various clients and addressees. IRI Police (IRIP) personnel compared with other professionals are under more pressure. The most important issue is broadness of the level of their social activities and missions. The second issue is that IRIP personnel tolerate considerable pressure; and their jobs are the centre of the attention of the society. This survey aims at surveying the factors which lead to emergence of STRESS on the part of SWAT officers while controlling riots in Tehran. The participants under survey were a sample of Tehran SWAT officers (n=200) randomly selected among three ranks: senior officers (6), junior officers (27) and noncommissioned officers (167). The tool used for collecting information was self-made questionnaire with Likert range and the questionnaire validity along with studying resources, test; experts, advisor instructors and advisors' comments; and reliability has been calculated through using Alpha Chronbach's coefficient (a=0.81). Frequency, percentage, mean, SD, X2 test and variance analysis were used to analyze data. The results of the research gives the first priority to physical and emotional damages in terms of STRESSors and the other priorities are given to ambiguity in dealing with rioters, performance appraisal, life risks, organizational relationship and job position downgrade.

Aims: Occupational STRESS is a common problem in modern societies. Military related jobs are among high STRESS occupations. This study was performed to identify factors influencing occupational STRESS in military personnel in Iran.Methods: This cross-sectional study was performed on 749 official military personnel from different provinces of Iran, who were selected using two-stage cluster sampling, in year 2010. Occupational Descriptive Index (containing 35 questions) was used in order to collect data. Data was analyzed using descriptive statistics including mean and standard deviation, and inferential statistical methods including variance analysis and independent t-test by SPSS 16 software.Results: The relationship between age and occupational STRESS shown to be as a broken curve in which the greatest amount of STRESS was observed in range of 26 to 40 years and after that the STRESS decreased as the age increased. Based on results, age had effect on all areas of occupational STRESS, except for Demand and Relationship. Results showed a reverse relationship between occupational satisfaction and occupational STRESS. Occupational satisfaction affected all areas of occupational STRESS.Conclusion: Occupational STRESS decreases with age increase and age has impact on all areas of occupational STRESS. Work experience has a significant relationship with occupational STRESS.

Purpose: Application of heavy forces to maxillary dentition during treatment with headgear, induces high concentration of STRESSes in periodontal tissue. Quantification of this STRESS is of great concern in orthodontics. This study was designed to investigate the quantity and quality of STRESS response in the PDL of maxillary first molar which was subjected to high pull headgear traction using Finite Element method.Methods and Material: In an experimental study, a three-dimensional finite element model of maxillary dentition, consisting of 17096 elements and 23013 nodes, was developed based on a young human skull. The forces were applied to the maxillary first molar in the stabilized Arch by means of a rectangular full size arch wire in (022) slot bracket. Mechanical properties of this model were based on previous studies. A 350 gram force was used for high pull headgear to affect the dentition (+30 degree) and STRESS distribution was investigated in buccal, palatal, mesial and distal side and in cervical, middle, apical sections of the PDL. The quantity of STRESSes were expressed as principal STRESSes (1,2,3), while the negative and positive signs indicated compressive and tensile STRESSes.Results: The buccal surface of PDL of mesiobuccal root and the buccal, palatal and distal surface in cervical region of PDL of distobuccal root and the distal surface of the PDL of palatal root had received a great deal of STRESSes, in addition, the over all STRESS distribution in roots of molar had intrusive nature.Conclusion: The extension of high STRESS concentration areas observed after using high pull headgear is limited to some root surfaces specially the distobuccal root.

In order to identify the correlations and relationships between different traits in the bread wheat, 30 genotypes were investigated as sub-factors under the split plot experiment in the completely randomized design in greenhouse and the randomized complete block design in the field with three replications under the normal irrigation and post-anthesis water STRESS conditions. The results of the canonical correlation analysis showed that at both normal and moisture STRESS levels, there was a significant correlation between the pair of canonical variables obtained from the phenological traits and the yield components. Under the normal conditions in the greenhouse, to increase the spike density and length, the number of days to 50% flowering can be considered as a suitable selection criterion. According to the results of canonical correlation analysis, under the STRESSed conditions in greenhouse, to increase the spike length, the number of days to the heading, maturity and 50% of flowering were among the important and EFFECTIVE factors. Under the optimum irrigation conditions in the field, the number of days to maturity was considered as one of the factors influencing the seed weight per spike. The results of canonical correlation analysis under the field STRESS conditions showed that to increase the 1000-seed weight, the number of days to maturity can be considered an appropriate selection criterion.

Background: The most frequently used test for evaluation of fetal health is the Non STRESS Test (NST). Unfortunately it has a high incidence of false positive results. The combination of vibroacoustic stimulation with the NTS has been shown to reduce non reactive results.Methods: A tests assessment method was chosen with a simple randomized sampling. 40 pregnant women with non reactive NST in the first 20 minutes who received VAS in one of Tehran University's Hospitals were compared with BPP scores. A vibroacoustic stimulation was applied for a 3 seconds on the maternal abdomen and fallowed within 10 minutes. Data collection tools were NST, sonography instruments, NST result paper, tooth brusher, watch, demographic questioner and check list. Data analysis was made by descriptive static and by using the Fisher's Exact Test (with level of significant at p<0/05). All statistical analysis were performed using an spss/win.Results: After VAS, 70% of non reactive tracing became reactive. All cases with fetal reactivity response after a VAS had a subsequent BPP score of 8 (negative predictive value of 100%). False positivity of VAS was lower than NST.Conclusion: VAS offers benefits, by decreasing the incidence of non reactive test and reducing test time. VAS lowers the rate of false positive NST. VAS is safe and allows more efficient of prenatal services. This test could be used as a rapid antepartum test to predict fetal well-being.