نتایج جستجو برای: mountain regions

تعداد نتایج: 376699  

Journal: :Eos, Transactions American Geophysical Union 2002

Journal: رستنیها 2009
A.A. MAASSOUMI, B. HAMZEH'EE M. MAHMOODI,

The geographic distribution of Astragalus (Fabaceae) in Iran was analyzed using a database of 7606 georeferencedobservations. Astragalus occurs in all provinces of Iran, but 88% ofthe observations are in five provinces including Tehran, West-Azerbaijan, Esfahan, Kordestan, and Khorasan-e Razavi.Most species are rare and narrowly endemic: Thelargest distance between two observations of the same ...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده فنی 1393

a problem of computer vision applications is to detect regions of interest under dif- ferent imaging conditions. the state-of-the-art maximally stable extremal regions (mser) detects affine covariant regions by applying all possible thresholds on the input image, and through three main steps including: 1) making a component tree of extremal regions’ evolution (enumeration), 2) obtaining region ...

2009
Claudia Drexler

Low abiotic stress No specific adaptations (ecotype) High disturbance High propagule pressure High competition High abiotic stress Low disturbance Low propagule pressure Specific adaptations (ecotype) Low High hindering invasion promoting invasion Altitude This Newsletter comes out twice a year. Editors: Claudia Drexler and Gregory Greenwood. Design and Layout: Claudia Drexler The MRI and its p...

Journal: :Ethnobotany of mountain regions 2021

2012
Jennifer Schneevoigt Lothar Schrott

Alpine regions are moving into the focus of scientific attention: chapter 13 of Agenda 21 is dedicated to mountains, 2002 was declared «International Year of the Mountain» and German Geographers' Day 2003 was entitled «Alpine World Mountain World: Islands, Bridges, Borders». The sustainable preservation of alpine regions represents a global issue, because a tenth of the world's population lives...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده ادبیات و علوم انسانی 1384

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