جستجوی مقالات مرتبط با کلیدواژه « software » در نشریات گروه « کشاورزی »

This research was conducted in two watersheds Dasht-e-Room in Boyerahmad county and Kareh in Dena county using IntErO model. After collecting basic information; the 26 input variables were extracted and calculated using topographic, pedologic, and geologic and land use maps and climatic data i. The results showed that the maximum outflow from the watersheds of Kareh and Dashtrom in 100 year return period are 235 and 179 cubic meters per second, respectively, In other words, the amount of runoff produced in the Kareh watershed is approximately 1.3 times the oufflow from the Dasht-e- room basin and the amount of soil erosion in Dasht-e-Room and Kare watersheds, 105162.22 and 71402.58 cubic meters per year, respectively. Considering sediment delivery ratio of 0.195 in Dasht-e-Room watershed and 0.487 in the Kareh watershed, the amount of soil eroded transferred to the outlet of the watersheds (sediment yield) is 20521.32 and 34800.46 cubic meters per year respectively. The erosion intensity coefficient in Dasht-e-Room watershed is 0.338 and as a result, based on the degree of erosion intensity of IntErO model, the erosion process intensity in this watershed is low and the dominant erosion of the region is deep. The erosion intensity coefficient in Kareh watershed is 0.403 and as a result, the erosion process intensity in this watershed is moderate and the dominant erosion of the region is superficial. The amount of sediment yield per unit area in Dasht-e-Room watershed is 133.53 and in the Kareh watershed it is 347 cubic meters per year.

Nowadays, with progress in different sciences and entering logging software and Decision Support Systems, decision has been deviated from trial and error in agriculture mechanization and aimed to predict prospective and targeted accordingly. Therefore, in this research, the Analytic Hierarchy Process (AHP) with the help of EXPERT CHOICE11 software was employed to select the best kind of sprayer for usage in citrus gardens of Mazandaran. Four different sprayers including Motorized Backpack sprayer, Atomizer sprayer, Wheelbarrow sprayer and Air blast sprayer were evaluated in this study. The criteria of selection consisted of the tank capacity, costs, spray quality, field capacity and amount of consumable solution per hectare. The importance of spray quality, amount of consumable solution per hectare, costs, tank capacity and finally field capacity were equal to 0.481, 0.302, 0.102, 0.073 and 0.042, respectively. The atomizer sprayer is selected and introduced with 0.504 final value as the most appropriate choice option. Inconsistency ratio was calculated equal to 0.04 that is acceptable amount in satays' opinion.

The purpose of this research is to study the changes in some features of the topsoil and vegetation in the land affected by flood and comparing its results with the control area in koh khajeh flood spreading station in hamoon area of Sistan. For this purpose, four sites were considered as flood spreading area and two sites were selected as control area. Samples were taken in six sites using the random-systematic method. To this aim, 3 transects of 100 meters was established in each field and each one had 10 plots of 1 square meters regarding the dispersion of vegetation. Canopy cover percentage and density were calculated through use of plots and clipping and weighing was used to measure current year's growth as production. Also, to measure soil properties, sampling along each transect and in six points (3 points in shrubs understory and three points in bare soil), and factors as EC, pH, nitrogen percentage of the soil, and organic matter percentage were calculated. In order to compare the results regarding soil features, we used 2*2 factorial tests and for the factors regarding vegetation we used non-paired t test in spss. Data normality was assessed using Kolmogorov test. The results indicated that flood water spreading has a significant effect on canopy cover percentage and plant production respectively in probability level of 5 and 1 percent, but there is not significant difference between vegetation density in flooded and control area. Results showed that flood has led to significant increases in soil nitrogen percent and organic matter as well as low acidity and EC in probability level of 5 %.at the same time, organic matter, nitrogen and acidity are low compared to shrub understory soil in both treatments. However, EC in soil under shrub is higher than bare soil in both treatments.

Summary
Mosses (a section of bryophytes), are considered as an important group of non-flowering plants which a modern computer-assisted database system is not yet prepared for their determination and description key in Iran. Following a
software package recently designed under a research project for assessment of moss diversity of Iran by the authors, the present paper is prepared to: I) introducing competency/convertible featuring of this package in the form of an electronic atlas for a variety of moss specimens identified for “IRAN” herbarium, and II) mapping based on geographical coordinates capable of extracting different documented reports analysis for other related taxonomical
fields. For structural analysis algorithms to develop a comprehensive model named as “the Iranian moss flora explorer” using VB.NET Database. Based on the reliable and an up-to-date scientific resource, all the moss specimens of “IRAN” herbarium along with their diagnostic features and many kinds of habitats were revised. As a result, 250 identifier (ID), included in 36 families, 85 genera, with 12 varieties were considered as identified taxa for “IRAN” herbarium during 1984–2016. In addition, 250 geographical distribution maps are also drawn and enclosed herewith. In this model, each ID embraces two sections i.e. one general and one technical (Figs 1–6).

The use of algae was known to humans about three thousand years ago. More than 2500 algae species have been reported from Iran. Considering the importance of pharmaceutical use and the extraction of effective substances from algae types that are imported more than other countries, a study of biodiversity and explaining the position of various algal species is inevitable. Using programming in the VB.net environment, a software application named "Medicinal Algae of Iran" was designed. By reviewing scientific reports during the last century, digital IDs were found in four kingdoms including 8 divisions, 13 classes, 26 orders, 34 families, 42 genera and 58 species of medicinal algae in Iran. In this algorithm, which is executable in common operating systems such as Windows, the distribution area and also the various distribution points are calculated and plotted on the map based on the relative density of species diversity at each stage of the process. It is worth noting that so far, this software model has not been found in the field of data mining of medicinal algae in scientific resources. Thus, given the importance of interdisciplinary studies and facilitating access to information management about the diversity and distribution of medicinal algae, such features as updating with data integration, ease of use for everyone, and the promotion and extension of technical knowledge for other medicinal plants can be considered in such a software.

Wind erosion has high potential for damage, especially in arid region due to continuity and extent of erosion in time and space. Therefore, the damage to economic resources is impressive especially soil and vegetation. So, a comprehensive understanding of its formation, function, effects and affected areas is essential. This study was implemented for finding the source of wind erosion and sand movement direction in Khezrabad region, Yazd Province. In this study, Yazd synoptic station anemometer data was analyzed over a period of 15 years (2001-2015) using Sand Rose Graph 3.0, WD convert and Wrplot View. The results of the spatial analysis of data from the anemometer (wind rose) showed that the dominant wind direction of Khezrabad Plain is Western with 18.77 percentage of calm wind with speed less than a knots (0.54 meters per second). The results of the calculation and drawing Storm Rose provided based on wind erosion threshold velocity of 6.5 meters per second showed that erosive winds mainly blow from the West-North West (WNW) and North West (NW) and West winds (W) less frequency. According to Storm Rose drawn, the frequency of calm winds (less than 6.5 m/s) in the region is about 96%. This indicates that erosive wind include only about 4 percent of views. Storm Rose provided based on speed threshold showed that North-West (NW), South-West (SW) winds have the most Drift Potential (DP) respectively. The Resultant Drift Direction (RDD) is around 74 degree (Northeast).

Due to shortage of rainfall in Iran, the owners of Industries and businesses that their field of work are related to water are use ground water resources to compensate this shortage. This matter in Iranian plains like Kabudarahang plain, which is located in the Hamedan, Iran province led to drawdown of water levels in the aquifers and irreparable consequences has been followed. In this study, at first in ARC GIS maximum depth of bed was appointed. Then draw down of groundwater levels of Kaboudarahang were modeled and analyzed using MODFLOW hydraulic model at GMS software in the period of 2002 to 2011. Also hydraulic conductivity coefficients and specific yield coefficient were calibrated and verified. The results of statistical indices show that the model simulates the fluctuations of groundwater levels with an acceptable level of accuracy in Kabudrahang. The study followed by doing sensitivity analysis for surface feeding and specific yield parameters that calculated results shown specific yield is more effective. Then the drawdown of ground water levels in wells is predicted up to 2022 that estimated largest drawdown was about 5 meters.

Approaches of data analysis in intercropping experiments and evaluation of crop competition are very important in interpreting the results. Intercropping advantages may be influenced by both plant density and relative frequency of the intercrop components as key factors. The fundamental problem in replacement series method (usual method on intercropping experiments) arises from the two-dimensional nature of intercropping. Results based on linear regression model are not independent of plant densities, and varying densities produce different results. Conducting methods such as univariate analysis of variance or comparing the means by using procedures such as the least significant difference (LSD) or Duncan's multiple range test (DMRT) are not appropriate to evaluate data obtained from the interpreting experiments, due to fact that they cannot explain simultaneously the response of agronomic plant to different treatments. On the other hand, bivariate analysis of variance has enough accuracy and sensitivity in this regard because effects of treatments on each plant, as a component of a planting system, are not independent of another plant and are placed under its interaction effect. The effects can be explained with the help of graph drawing in which the angle between two axes depends on the magnitude of the effect and the positive or negative effect of the interaction changes between two states of open angle and closed angle. The variance and covariance calculations, mean comparisons, graph drawing and the determination of significant differences between means were performed by using a program (Skew Axes)*. For practical application of the method of bivariate analysis and Skew Axes program with incorporation of one input data file (yield of sesame and sorghum intercropping ) and showing some figures, correlation and relation between yield of two specific for a specific treatment(density, proportion or interaction of density and proportion), also possibility to analyzed two values obtained from one plot related to a specific treatment simultaneously were presented and discussed.

A mathematical model was developed for freeze drying in which the dimensions andspecifications of the condenser were considered for the first time. An appropriate programwas written using MATLAB to solve model equations and simulate the process. The software successfully simulated the drying data of a suspension of 20% milk recorded in a lab scale freeze dryer. The simulator was then used to investigate the effect of dryer specifications on the timing of primary and secondary drying stages. The results showed that primary drying time is proportional to sample thickness squared, but the secondary drying time is less dependent. Condenser temperature nonlinearly affects both drying times. Dependency weakens with an increase in drying chamber temperature and eventually disappears at chamber temperatures above 255K for primary and 330K for secondary stages. The results also showed that a decrease in the condenser heat transfer area from 2 to 0.5 m2 per kg of initial water will increase secondary stage drying time from 11 to 12 hours.

The execution of this research is in line with the goals as follows: 1-The determination of physical and chemical characteristics of soils. 2-The determination of orders and subgroups of soils in USDA-NRCS 2006, System and conform it with WRB system.3-Preparing and drawing of orders maps ,subgroups and the ability of soil with the use of topographical maps, satellite pictures and geological maps of the interested regions were examined .Then with ARC VIEW GIS software, landforms in 30 units were prepared and drawn. In any land form, plots of 25 Ares were carried out. In second phase, each plots, one contral profile (reference) was digged.with the determination of morphological characteristics profiles and determination of physical and chemical horizons in each profiles, the characteristics of the soils were examined. As Mention of Studies in Namkaneh region, nine subgroups according to four orders. Based on USDA classification were determination as follows:Lithic Vermudolls ,Inceptic Hapludolls, Typic Dystrudepts ,Typic Udorthents ,Inceptic Haprendoll ,Typic Paleudalfs ,Humic Dystrudepts ,Typic Hapludalfs ,Lithic Udorthents .parallel with the geological studies , the plant coverage with the use of previous studies and also its completion were examined .finally the following maps including 1-the map of soil, plant ecological societies, ecological plantation stand (soilꙖ), and classification of the ability of soils were prepared and drawn.