در هنگام جستجو کلمه در قسمت عنوان میتوانید کلمات مورد جستجو را با کاراکتر (-) جدا کنید.
کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: مهندسی اکوسیستم بیابان
- نوع مقاله: Journal Article
- کلمات کلیدی: Wind erosion,sand dunes,Wind rose,Sand rose,Yazd province
- چکیده:
- چکیده انگلیسی: In desert biome, the wind has an important role in erosion. The rate of wind energy and its direction variability have a significant control over the morphology and maintenance of aeolian landforms. The objective of this research is to investigate erosive winds and sandy sediments drift in Central Iran. For this purpose, the anemometric data from 1996 to 2015 of 11 stations were analyzed by WRPLOT software. To determine the wind direction, the annual wind rose and sand rose were drawn. The results obtained from the analysis of wind rose data revealed that the maximum frequency percentage was for the class 4-7 knot. The results showed that the dominant drift directions are NW, W, and SW toward N, NE, and E. The maximum and minimum total sand drift potential were 1245.2 and 57.9 vector units that are related to Abarkouh and Behabad stations, respectively.
- انتشار مقاله: 23-08-1396
- نویسندگان: Amir Hossein Parsamehr,Abbas Ali Vali,Zahra Khosravani
- مشاهده
- جایگاه : پژوهشی
- مجله: Advances in Mathematical Finance and Application
- نوع مقاله: Journal Article
- کلمات کلیدی: Performance Evaluation,Quality Management,Accounting data
- چکیده:
- چکیده انگلیسی: The impact of the management performance evaluation methods on the information quality in accounting will be studied in this paper. The information plays two roles in the market-oriented economies; first, it allows the investors to evaluate the potential opportunities of the investment (prospective role) and, secondly, it enables the investors to monitor how to allocate and use their capital by the establishment of some mechanisms. The statistical sample includes the 112 companies in Tehran Stock Exchange during 2010 to 2013 that are selected by the systematic elimination method. These companies were totally 560 years old. The hypothesis of the linear regression test was used in this study to analyze the data and Eviews software is used for hypothesis test.
- انتشار مقاله: 22-08-1395
- نویسندگان: Hossein Parsamehr,Ali Kasravi,Mohadeseh Fazli
- مشاهده