نتایج جستجو برای: using metrics of patch area

تعداد نتایج: 21468181  

Journal: :محیط زیست طبیعی 0
مهدی شیخ گودرزی دانشجوی کارشناسی ارشد، دانشکده منابع طبیعی، دانشگاه تهران، ایران افشین علیزاده شعبانی استادیار، دانشکده منابع طبیعی، دانشگاه تهران، ایران عبدالرسول سلمان ماهینی دانشیار، دانشکده منابع طبیعی، دانشگاه گرگان، ایران جهانگیر فقهی دانشیار، دانشکده منابع طبیعی، دانشگاه تهران، ایران

environmental degradation model is one of the environmental impact assessment (eia) methods in which ecological cumulative effects of human activities on his surrounding nature could be evaluated and quantified. as a special trait of landscape ecological metrics is the ability of rapid assess and recognize of human activities in the shortest time. thus in this study, we used a landscape degrada...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1390

in the new age, in regard to human success in education in the globalizing world, one can consider english proficiency and individual differences as two important issues. in efl settings, reading skill plays an important role in education. it seems that using multiple intelligences theory in efl classes which values individual differences by tapping different intelligences, can be rewarding. as...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده ادبیات و علوم انسانی 1390

abstract this study is an attempt to determine the effect of nano- technology education on science lesson for fifth grade in primary school in the city of kermanshah. this research is experimental and is conducted in the from of pre-test and post- test for the control group. an achievement test was administered to determine the rate of learning in the students. the research is an applied one. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1392

abstract although music possesses some kind of power and using it has been welcome by many students in language classrooms, it seems that they take a non-serious image of the lesson while listening to songs and they may think that it is a matter of fun. the main objective of the present study was to investigate whether learning a foreign language through musical texts (songs) can have an impac...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم انسانی 1389

abstract amino acids are building blocks of proteins, and play a vital role in living beings existence and their functionality. the interaction of these compounds with metal ions is of great importance to biochemists, and chemists, because their functions can be utilized as a model in understanding enzymes mechanism for transport of metal ions to tissues. among twenty essential amino acids w...

2005
Alexandra D. Syphard Keith C. Clarke Janet Franklin

Land use change is one of the most important anthropogenic factors affecting terrestrial ecosystems, causing habitat loss, fragmentation, and interactions with other components of global change, such as biological invasions of non-native species. In southern California, population growth and economic expansion are the primary drivers of land use change, and the population is expected to double ...

Journal: :محیط شناسی 0
پرستو پریور دانشجوی دکتری برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران احمد رضا یاوری دانشیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران شهرزاد فریادی استادیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران احد ستوده دانشجوی دکتری برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران

tehran is one of the most polluted metropolises in the world. sink capacity for absorption and assimilation of pollution is reduced generally due to failure in inclusion of ecological aspects in regional land use development planning. the present condition of air and water related issues in tehran are greatly affected by landscape structural alterations at urban level. in this research the focu...

Journal: :Remote Sensing 2016
Priyakant Sinha Lalit Kumar Nick Reid

Often landscape metrics are not thoroughly evaluated with respect to remote sensing data characteristics, such as their behavior in relation to variation in spatial and temporal resolution, number of land cover classes or dominant land cover categories. In such circumstances, it may be difficult to ascertain whether a change in a metric is due to landscape pattern change or due to the inherent ...

B. Shakeryan H. Hodjati, N. Riaz Montazer

Background: Management of lymphedema is a challenging issue in surgery.  A variety of operations have been used, albeit with little success. Objective: To investigate the efficacy of testicular patch as a lymphatic conduit. Methods: An incision was made on the inguinal area of 10 dogs and all lymph nodes of inguinal area were excised. The tunica albuginea and parenchyma near the hilum of testes...

Journal: :Ecological Indicators 2021

Saltmarsh is a coastal ecosystem providing crucial services, and its continued degradation fragmentation has drawn increasing attention. However, how to effectively restore the connectivity between fragmented saltmarsh patches remains an open challenge. In this study, we developed metric modelling framework that prioritised for restoration. To demonstrate our approach, simulated spatially expli...

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