sadegh maleki

Considering that the study of social systems is the basis of organizational research, the present study was conducted with the aim of analyzing the factors affecting the productivity of educational organizations with emphasis on social systems in a qualitative way from the Grounded Theory. The statistical population of the study was a group of experts in the field of productivity. 25 people were randomly selected as a sample. The data collection tool was a semi-structured interview with productivity experts. by conceptual analysis of data, 20 organizational factors affecting productivity, 16 organizational barriers to productivity, 12 organizational factors underlying productivity, 35 strategic organizational factors, 20 causal factors and 7 organizational outcomes around the five main axes of education, research, culture, student and credits and facilities were obtained. Finally, the results were presented as five hypotheses and a model.

The purpose of this study was to evaluate the causal relationship between spiritual leadership and faculty development with the mediating role of organizational learning in Islamic Azad University branch of West Azarbaijan province The population of the study was 695 full-time teachers of 13 units, among them 263 people were selected using stratified random sampling method and Krejcie and Morgan table were used to determine the sample size.tree standard questionnaires, Fry's Spiritual Leadership , Quarterly Growth and Organizational Learning were used for data collection. Content and construct validity of the questionnaires confirmed and Cronbach's alpha reliability in the baseline and the final was appropriate. Structural equation modeling was used to evaluate the fear relationships of the variables currently being measured in the conceptual model. The results showed a positive and significant relationship between spiritual leadership and development, while the results showed that organizational learning plays a mediating role in the relationship between spiritual leadership with development.

Spiritual leadership mediated by organizational learning has a positive and significant effect on faculty development.

The study aimed to develop a model for effective school in the junior high school. The research has a descriptive-survey method. The statistical population included faculty members of the Education Department, heads and deputies of education organization, principals and educational assistants of schools, teachers and parents of high school students with a degree in education science in the northwest of Iran ,that A sample of 217 people were selected purposefully. A researcher-made questionnaire was developed to collect the data using theoretical foundations and After confirmation of its face and content validity in quantitative, the questionnaire reliability was obtained (α = 0.970). Data were analyzed using SPSS and AMOS. The results showed that the factor analysis model of 16 effective school components based on components and in prioritizing the components based on confirmatory factor analysis, decision making with the estimated standard coefficient of 0.931 was the most effective and the component of monitoring, evaluation and providing feedback with an estimated standard coefficient of 0.603 was the least effective. In the second step, the weight of each of the components and Sub-components were calculated by analyzing the hierarchy using Excel, and the incompatibility coefficient was calculated using MATLAB and The linear model of effective schools was obtained based on the impact factor and the significance coefficient. The results showed that the prioritization of components changed by applying their significance and in the final prioritization, the effective teacher (0.148) had the first rank and the latency (0.126) the last rank.

The goal of this study was to investigate the effects of joints members type (oriented strand lumber, plywood and poplar wood (Populusdeltoides), penetration deeps of staple (12 and 17mm) and adhesives (with and without adhesive) on face and edge withdrawal resistance of joints fabricated with staple. Experimental specimens under withdrawal load test of face and edge consisted of two principal structural members, main member and a secondary member which were joined together by one staple. The results showed that joint member, penetration deeps and adhesive significantly influence on the withdrawal resistance. Staple withdrawal resistance in the face was higher than that in the edge. Staple holding resistance increased with the increase of penetration deep and the withdrawal resistance of joints fabricated by adhesive was higher than those without adhesive. The joints made by oriented strand lumber exhibited better performance than other two members and joints made with poplar wood had higher resistance than plywood joints. The highest face (2326N) and edge (1265N) withdrawal resistances were obtained from joints prepared from oriented strand lumber with adhesive and17mm penetration deeps.

The aim of this research is analyzing the skill training needs of the east Azerbaijan based on land-use planning in industry sections. This is a descriptive survey research. The statistical population of this research consists of managers, planners and experts involved in industry sections of the east Azerbaijan. At first, 132 training needs have been extracted based on land-use planning. Afterwards, a training needs assessment form has been designed, which it consists of six-answer questions based on Likert's spectrum. The adaptability of these training needs to the labor market needs have been assessed based on expert's opinions. Finally, these skill training needs have been ranked basis on the questionnaire results quantification (based on the Likert's spectrum), and the scores obtained for each educational needs.

The study aimed at predicting bending moment resistance plywood of screw (coarse and fine threads) joints using regression models. Thickness of the member was 19mm and compared with medium density fiberboard (MDF) and particleboard with 18mm thicknesses. Two types of screws including coarse and fine thread drywall screw with nominal diameters of 6، 8 and 10mm and 3. 5، 4 and 5 cm length respectively and sheet metal screw with diameters of 8 and 10 and length of 4 cm were used. The results of the study have shown that bending moment resistance of screw was increased by increasing of screws diameter and penetrating depth. Screw Length was found to have a larger influence on bending moment resistance than screw diameter. Bending moment resistance with coarse thread drywall screws was higher than those of fine thread drywall screws. The highest bending moment resistance (71. 76 N. m) was observed in joints made with coarse screw which were 5 mm in diameter and 28 mm in depth of penetration. The lowest bending moment resistance (12. 08 N. m) was observed in joints having fine screw with 3. 5 mm diameter and 9 mm penetrations. Furthermore، bending moment resistance in plywood was higher than those of medium density fiberboard (MDF) and particleboard. Finally، it has been found that the ultimate bending moment resistance of plywood joint can be predicted following formula Wc = 0. 189×D0. 726×P0. 577 for coarse thread drywall screws and Wf = 0. 086×D0. 942×P0. 704 for fine ones according to diameter and penetrating depth. The analysis of variance of the experimental and predicted data showed that the developed models provide a fair approximation of actual experimental measurements.

The goal of this study was to determine stress carrying capacity of doweled corner joints in framed furniture structures. Joint members were out of European silver Fir (Abies alba) and dowels were made from Beech and Hornbeam woods as variables in this study. Diameter of dowel had three levels in size، namely 6، 8 and 10 mm. Mitered and Butted experimental joints were tested under diagonal tension and compression loads. Results have shown that stress carrying capacity of tested joints under compressive load is more than that of tension one. Also، stress carrying capacity of mitered joints، under both loading type، was more than that of butted joints. Maximum stress capacity under tension load was observed in mitered joints with dowels of hornbeam which were 8 mm in diameter. Under compressive loads، maximum stress capacity was determined in mitered joints fabricated with dowels out of beech which were 8 mm in diameter. With tension loading، changing diameter of dowels from 6 to 8 mm، stress capacity of joint did increase drastically but from 8 to 10 mm، had no significant effects on joints’ capacity. Under compressive load، changing diameter of dowels from 6 to 10 mm had significant effect on capacity of joints. Species of dowel’s wood was not effective in tension، but in compression dowels of beech wood had pronounced improvement on joints’ capacity.

This study was conducted to evaluate stress carrying capacity of miter corner joints fabricated with dovetail fitting in frames made with particleboard and medium density fiber board (MDF) under diagonal tension loading. In this study، tests were carried out to determine the effects of dovetail fitting height (9 and 14 mm)، and adhesive types (polyvinyl acetate (PVAs)، cyanoacrylate (CA) on stress carrying capacity of dovetail joints under diagonal tension loading، and the joints without adhesive were compared. The results indicate that stress carrying capacity has increased، with the increase of high dovetail. The stress carrying capacity of joints constructed with CA adhesive was higher than that of those constructed with PVAs and without adhesive. Furthermore، the stress carrying capacity joints constructed with MDF was higher than that of those of particleboard. The lowest ultimate stress carrying capacities (2. 61Mpa) were obtained at 9 mm high dovetail of dovetail joints made of particleboard and without adhesive. Highest bending moment resistance (8. 61Mpa) was observed at 14 mm high dovetail with CA adhesive in medium density fiberboard.

In this study، screw and nail withdrawal strengths parallel and perpendicular longitudinal to grain of some hardwoods; oak (Quercus castaneifolia)، hornbeam (Carpinus betulus)، beech (Fagus orientalis)، Sycamore (Platanus oriantalis) and poplar (Populus deltoids) were investigated. The tests were conducted following ASTM D 1761 with specimen dimension of 15×5×5 (T×R×L). Three kinds of screws namely sheet metal screw، wood screw and coarse drywall screw with diameter of 4 and 5 mm were used. Three different nails with nominal diameter of 2. 5، 3. 25 and 3. 75 mm were also used. The highest screw withdrawal strengths parallel and perpendicular to grain were related to hornbeam، beech، oak، Sycamore and poplar respectively. Furthermore، the highest nail withdrawal strengths parallel and perpendicular to grain were related to hornbeam، oak، beech، Sycamore and poplar respectively for nails with 3. 75 mm diameter. Higher density and shear strength of hornbeam compared to the other species accounts for its high screw and nail withdrawal strengths parallel and perpendicular to grain.

In this research، drying kinetics and mass transfer coefficients (permeability and diffusion) of hornbeam wood (Carpinus betulus) from Nooshahar region were investigated. For this purpose، several boards with two nominal thicknesses of 2. 5 an 5 cm were prepared from a freshly cut log. The boards were dried inside a laboratory kiln at the dry bulb temperature of 40°C and relative humidity of 50% to the final moisture content of 6%. The pattern of moisture loss، thermal diffusion، final moisture gradient along the board thickness، transverse permeability and diffusion coefficients were then measured. The results showed that by increasing of board thickness، the rate of moisture loss decreased، particularly in the hygroscopic range and the moisture gradient increased، but the thermal diffusion was not affected. The transverse permeability and diffusion coefficient of hornbeam wood was 2. 91 × 10 -19 m 2 and 3. 29 × 10 -9 m 2s-1، respectively. Overall، it can be concluded that due to low transverse permeability coefficient of hornbeam wood، this species is difficult to be impregnated in common wood preservation process. In contrast، due to low diffusion coefficient، hornbeam wood is recommended for applications where high resistant to water vapor diffusion is required.

The purpose of this study was the comparison of mental health, marriage satisfaction and assertiveness between parents of mental retarded and normal (girl and boy) students. In these research parents of mental retarded and normal (girl and boy) who their children's were studding primary schools in west Azerbaijan were selected randomly and examined for obtaining the necessary in formation about groups. We used questioners: (SCL-), (ENRICH) and (ASRI). The data collected were analyzed by independent t test. The statically results were showed that: means of scores between groups in variables (mental health, marriage satisfaction and assertiveness) were significantly different (P<).