In this article the effect of non-uniform air gap on a 4/2 switched reluctance motor is studied. In order to do this, two rotors are designed, optimized and fabricated. The first rotor has uniform air gap in aligned position and the second rotor in half of pole is the same as the first but in another half of pole, air gap can be non-uniform. The purpose of optimization is achieving a desired torque profile which reduces torque ripple in high speeds and at the same time increases the average torque. Finite element analysis is used for calculating torque profile and genetic algorithm is used for optimization, both by MATLAB. Optimization variables are rotor pole arc and width of rotor yoke. For the second rotor, another variable which determines the amount of uniformity of air gap is added. The analysis results show that the motor with non-uniform air gap is more coincident with the desired torque profile. Experimental results of prototype motor confirm the analysis results.

Bismuth vanadate is one of the most widely used semiconductors for photoelectrochemical water splitting using sunlight due to its activity in the presence of visible light, stability, and cost-effectiveness. In addition to having a suitable band gap, this semiconductor has disadvantages such as high electron-hole recombination. In this research, with the aim of reducing electron-hole recombination and increasing the efficiency of bismuth vanadate photoelectrodes, templated mesoporous titanium dioxide prepared by P123, F127, and Brij 58 copolymers were used. The effect of three and two-block copolymers on the properties of prepared mesoporous synthesized titanium dioxide and their effect on the bismuth vanadate photoelectrode was investigated by FE-SEM, XRD, UV-vis, and BET analyses. These copolymers changed the porosity by creating cavities of different sizes, resulting in different loads of bismuth vanadate on titanium dioxide. To evaluate the photoelectrochemical results, LSV and electrochemical impedance spectroscopy were performed on the photoelectrodes. Absorption in the visible region showed an increase in current at a potential of 1.23V vs RHE and a low charge transfer resistance in Meso TiO2 / BiVO4 samples. The results showed that the templated mesoporous titanium dioxide increases the activity of bismuth vanadate up to 2.5 times.

The sense of belonging to university is linked to numerous aspects of the psycho-social health of students. However, there are many ambiguities in the conceptualization and measurement of this construct. The few tools designed in the field of higher education largely assess the sense of belonging and the measurement of the components of belonging to the university has received less attention in previous studies. The current study aimed to develop and validate the "Students' Sense of Belonging to University Scale (SSBUS)." In a correlational and tool development design, 345 students of Ferdowsi University of Mashhad were selected in the first stage and 477 students of University of Birjand were selected in the second stage by available sampling method. The results of exploratory factor analysis in the first stage showed four factors with 49.72% variance explanation, which included the components of interaction with professors, interaction with peers, university climate and self-esteem. The results of confirmatory factor analysis indicated that the four-factor model had a good fit, and the Cronbach's alpha coefficient of the subscales was reported in the range of 0.75-0.90. In addition, other analyses provided evidence to support the internal consistency, convergent validity, and divergent validity of the sense of belonging scale. It was found that each of the dimensions of this scale was significantly related to the measures of commitment to the university, social-emotional loneliness, satisfaction with life, depression and agentic engagement. In addition, the results of the retest coefficient of the subscales were in the range of 0.64-0.74. According to the findings of the present research, the students' sense of belonging to university scale has desirable psychometric properties and can be used as a valid instrument.

Abstract:  In some practical applications, the quality of a product or process is defined by a profile, which is a relationship between a response variable and one or more explanatory variables. Simple linear profiles (SLPs) are one of the various types of profiles in which the product or process quality is related to a simple linear function between a response and an explanatory variable. In this article, a functional capability index for a simple linear profile with asymmetric tolerance is introduced. The performance of the proposed index and existing ones (  and ) are studied using numerical examples and simulation studies in terms of mean absolute error (MAE), mean square error (MSE) and absolute percentage error (APE) metrics. The results show that the new index performs better than the two existing indices. Furthermore, confidence intervals for the proposed index are constructed using three bootstrap methods, and their performance is evaluated using simulation studies. A real-world case study is presented to demonstrate the application of the proposed index.

Control charts are powerful tools to monitor process. Design of control chart is usually performed through two ways, statistical and economical approaches Sometimes, a relationship, commonly called profile, between a response variable and one or more explanatory variables is defined for process monitoring. Various control charts proposed up to now to monitor profiles have not been designed economically. The importance of an economic design of profiles is significant. This is due to difference in some concepts and numerous of parameters. In this paper, for one of the monitoring approaches, which use three exponentially weighted moving average control charts simultaneously, cost function is presented and this approach is redesigned economically. In addition, the average run length calculating model is developed using the Markov chain method. This economic design is applied for a numerical example and solved by Nelder-Mead downhill simplex method and the optimal values of parameters are calculated.

Objective: The effectiveness Theatre of therapy on anxiety, mental health and personality profiling referred to the House of Culture Youth Department of Culture and Islamic Guidance cityMaterials and Methods: The study calls afterwards researcher sampling method were selected. A total of 15 young people referred to convenience sampling method referred to the House of Culture of the Youth Department of Culture and Islamic Guidance Shiraz city. And semi-structured clinical interview based on the DSM-IV was performed. The GHQ-28 scale (general health questionnaire), of Beck anxiety and personality characteristics were used for screening patients. Results: The results showed that theater therapeutic is effective on the mental health of youth who referred to culture houses of the Department of Culture and Islamic Guidance in Shiraz also theater therapeutic is effective on reducing anxiety of youth who referred to culture houses of the Department of Culture and Islamic Guidance in Shiraz and theater therapeutic is effective on construction of youth personality profiles of youth who referred to culture houses of the Department of Culture and Islamic Guidance in Shiraz.