فهرست مطالب somayeh zolfaghari

The purpose was to identify effective psychological variables in RCKB in emergent situation

The research method was quantitative descriptive, in particular a causal-comparative. Forty mechanical engineering students (eight teams, five people per any team) voluntarily participated in a time overcoming race designed by Yazd university's mechanical engineering professors, with limited time and equal equipment on race day, which involved building a boat to carry at least one kilogram in the shortest possible time, and over the course of the long haul. After the competition (5 hours) and the results were announced, the 3 groups were named as successful and the other groups were named as unsuccessful. Quantitative data were collected by: Schumer's epistemological beliefs, learning approaches, Ritks' critical thinking disposition, Bradberry & Greaves emotional intelligence, GPA self-reported academic performance.

findings showed that the GPA in the successful groups was significantly higher than unsuccessful groups, but there was no significant difference in the variables of epistemological beliefs, critical thinking, emotional intelligence and learning approach between the successful and unsuccessful groups.

that participants generally have developed epistemological beliefs, they mostly use a strategic learning approach, and they have a moderate tendency to critical thinking and moderate emotional intelligence.

The purpose of this study was to develop a rapid collaborative knowledge building model to encounter emerging situations according to Scardamalia, Bereiter, & Stahl perspectives. Forty mechanical engineering students voluntarily participated in a time overcoming race designed by Yazd university's mechanical engineering professors. Students encountered an emergent problem on the day of the competition (which involved building a boat to carry at least one kilogram in the shortest possible time, and over the course of the long haul). Specific equipment and limited time were provided equally to all teams to examine the process of rapid collaborative knowledge building. After the competition (5 hours) and the results were announced, the 3 groups were named as successful and the other groups were named as unsuccessful. The qualitative method of grounded theory was used. Quantitative data were collected by from focus group interviews (open, axial and selective coding), observations and scientific resources (scientific documents). Grounded theory was developed based on data triangulation. The results showed that rapid collaborative knowledge building is concerned on the factors: communication, team organization, use the tools, planning & idea storming, achievement motivation, positive perfectionism & time management.

This research was conducted in 2015 in Hallaf (Khozestan province), to locate the potential habitat of Calligonum comosum with the use of GIS and analytic hierarchy. For this purpose, at first, the habitat of the study species was determined in the region and the current position of establishment was determined as the natural environment. Accordingly, the ecological needs of Calligonum were identified and recorded in these areas by GPS. To determine the species soil needs, 30 soil samples were taken from 0-50 cm depth. Soil texture, acidity (pH), and electrical conductivity of soil samples were measured. In the next step, layers of climate, physiographic and soil characteristics maps were prepared and standardized with the help of digital data in GIS. Then by using ARC GIS10 software, all the layers were weighted by AHP method. Eventually, by integrating thelayers in Arc GIS and weighted hierarchical model, the layer of potential habitat for the study species was obtained and presented on the map of the region. On the basis of potential habitat, the resulting map was divided into five classes as follows: very high suitability (38% with an area of ​​3775 hectares), high suitability (41% with an area of ​​4149 hectares), suitable (8.6% with an area of ​​798 hectares), low suitability (11% with an area of 1104 hectares), and very poor suitability (1.4% with an area of 148 hectares).

As a cansequence of Marun dam construction on the Jarrahi River, qualitative and quantitative changes of inflow is an ecological threat on wetland ecosystem. In order to prevent the long- term negative impact of the projects on the ecosystem, it is necessary to assess the environmental flow and optimum water allocation for different uses. In this research, environmental flow indices were investigated using hydrological analysis of wetland inflow at Jarrahi River. Environmental flow estimated in Shadegan wetland are 6.83, 1.54 and 3.18 m on Montana method, environmental flow is estimated 1.54 and 3.6 m respectively. The results have shown that environmental flow indices were decreased after dam construction in all hydrometric stations. 3/s based on duration curve, Aqua France law and Smakhtin methods, respectively. Base 3/s in first and second part of year.