فهرست مطالب محسن بیگی

Nowadays, the issue of narcotics and its crimes has become an important problem of human societies and unfortunately, this trend is increasing day by day.

This research is in the group of descriptive cross-sectional survey research and is applied in terms of type. The statistical population of this research is 3200 police officers in Mashhad; A total of 90 people have been purposefully selected from 64 police chiefs and deputies, 20 anti-narcotics police officers and 6 judges of the Mashhad Revolutionary Court. In order to determine the reliability of the questionnaires, 15 people were selected from the statistical population and the questionnaire was provided to them and then Cronbach's alpha method was used to determine the reliability. Cronbach's alpha coefficient for the questionnaire was calculated (0.875). , That this coefficient is statistically acceptable and indicates the reliability of the questionnaire. To test the hypotheses in this study, from the SPSS software version 21 using content and face validity (using the opinion of respected professors and counselors and anti-narcotics experts) the questionnaire questions were finalized to make changes to the method. Measures and tools should have the necessary validity and appropriateness.

In the descriptive statistics section, statistical indicators such as frequency, percentage, mean and in inferential statistics section, parametric statistics have been used and after extracting information, statistical data. It was summarized and classified that this work was done by forming frequency distribution tables and using SPSS software version 21 and was analyzed using this software; T-test was used to test the hypotheses. Considering the level of significance, it can be said that the highest rank has the stress index in the pathology process of the performance of the anti-narcotics police and has been considered as the main injury.

Performance injuries of Mashhad Anti-Narcotics Police were identified in three areas: contextual, behavioral and structural.

The aim of this study is to design, fabricate and evaluate a new type of up-cut rotary tiller and to develop correct formulas to estimate its torque and draft force using the laws of classical mechanics. In order to verify the model, a real-sized prototype of the rotary tiller was tested. It was hypothesized that four processes are involved to create the rotary tiller torque, namely soil cutting, soil lifting, soil-metal friction, and soil velocity. Furthermore, it was assumed that the horizontal components of soil cutting and soil-metal friction forces create the required draft of the machine. Based on these hypothesizes, mathematical formulas were developed to calculate torque, and draft requirements of the machine. To facilitate performing necessary calculations, the developed formulas were entered in a worksheet of the MS Excel software. According to the results of this study, the average experimental draft and torque of the machine tilling a silty clay loam soil were 16.8 N and 12.8 Nm, respectively. Furthermore, the average theoretical draft and torque of the machine were 13 N and 11.8 Nm respectively. These promising results can be considered as the accuracy check of the formulas developed herein.

Nowadays, the Theory of Recognition emerges as a new discourse, at the same time has been grown up in the field of Western philosophy and social sciences. In the present article, the fundamentals and intellectual principles of Axel Honneth’s thought – a German political philosopher who has an important role in the expansion of recognition theory – are studied. Honneth considered the concept of “recognition” as the basis of social conflict by re-interpreting the critical theory and aiming at eliminating the barriers that this theory has been struggling with at the beginning. He presented a new understanding of the concept of “identity” to pass the first generation of critical theory presented by Adorno, Horkheimer, and Marcuse, who all emphasized on negative dialectic and the second generation that emphasized on the communicative action in the universalism framework and Intersubjectivity to evaluate the perspective of the ethical experiences of subjects in interpersonal interactions based on recognition theory. The main question raised in the present study is “How does Axel Honneth evolve in contemporary radical issues by introducing measures in the framework of recognition theory with the critical approach?” In response to this question, the following hypothesis is proposed: Honneth has come up with a comprehensive view of recognition by relating three areas of identificators, namely, love and friendship with rights-based relationships and solidarity. He deduced this achievement as the basis of an infraclass analysis of contemporary radicalism and a critique of the orthodox view. The aim of the present study was to examine one of the growing trends in contemporary radicalism.

In this study, energy and exergy indices for convective hot air drying of apple cubes were investigated and effect of the air parameters on them were assessed. Drying experiments were carried out at the air temperature levels of 45, 55 and 65 °C, and the air velocity levels of 1, 1.5 and 2 m s-1. Average values of energy utilization were obtained to be in the range of 0.324-1.543 kW. The minimum and the maximum values of specific energy consumption were obtained for drying at air temperature of 65 °C and air velocity of 1 m s-1, and at air temperature of 45 °C and air velocity of 2 m s-1, respectively. Average values of input exergy, output exergy and lost exergy were obtained to be in the range of 0.09106-0.52095 kJ s-1, 0.06401-0.46135 kJ s-1 and 0.02705-0.05960 kJ s-1, respectively. Average exergy improvement potential rate was increased with increasing air temperature and air velocity, and varied from 0.00804 kJ s-1 to 0.01175 kJ s-1.

Zink deficiency in calcareous soils of arid and semi-arid regions is a limiting factor for crop yield. Bean is considered as one of sensitive plants to zinc (Zn) deficiency. To study the responses of various bean genotypes to soil zinc deficiency, a greenhouse experiment was carried out. A factorial completely randomized design with three replications was conducted. The first factor was two levels of Zn (0 and 10 mg Zn kg-1 soil) and the second factor was 12 genotypes of beans. Zn uptake was found to be significantly correlated with Zn level, however, zinc concentrations of both old and young plant portions had lower correlation. Therefore, zinc uptake is a suitable characteristic to identify zinc efficient genotypes compared to Zn concentration. Adequate Zn supply in studied genotypes enhanced shoot dry matter production of bean genotypes compared to plants cultivated under low Zn condition. Under low Zn condition, dry matter production of young part of shoot was lower in the Zn inefficient genotypes, but in the old portion of the shoot exhibited higher dry matter. In addition, compared to efficient genotypes, responses of inefficient bean genotypes were higher to zinc application.

In 1990 decade after the realization of the importance of sophisticated weapons in the Persian Gulf war (1990-1991), the process of revolution in military affairs, the increasing strategic concern due to the challenges posed by the United States to the military interests of China in Taiwan, the emergence of Japan as a regional military power and also the military power of India and its increasing regional influence which made the occurrence of war more possible, one witnesses China’s inclination towards defence technology and modernization of People’s Liberation Army(PLA). Therefore in security thinking of China the priority of improving the military power has reached the level of priority of economic development. In this direction the Chinese leaders in the past decade taking into consideration the above changes have set strategic goals and adjusted their defence policies and have achieved enormous progress in defence technological field.