نتایج جستجو برای: exceptional ecological conditions

تعداد نتایج: 952767  

2002
Y. B. ZHAO J. Y. HAN Z. Q. Luo

This paper introduces the concept of exceptional family for nonlinear variational inequality problems. Among other things, we show that the nonexistence of an exceptional family is a sufficient condition for the existence of a solution to variational inequalities. This sufficient condition is weaker than many known solution conditions and it is also necessary for pseudomonotone variational ineq...

Journal: :محیط شناسی 0
حسن دارابی استادیار گروه مهندسی طراحی محیط، دانشکدة محیط زیست، دانشگاه تهران ایمان سعیدی مربی گروه مهندسی فضای سبز، دانشگاه ملایر

introduction urban landscape is experiencing rapid changes which put all urban domains under pressures. these processes revolutionize urban landscape into spaces without ecologic values. the sustainability of green patches and corridors has been scathed by lack of ecological approaches in planning and design. therefore, urban green spaces structures and functions have been damaged. green spaces...

Journal: :PeerJ 2015
Murray A Rudd

Using an international dataset compiled from 121 sites in 87 marine protected areas (MPAs) globally (Edgar et al., 2014), I assessed how various configurations of design and management conditions affected MPA ecological performance, measured in terms of fish species richness and biomass. The set-theoretic approach used Boolean algebra to identify pathways that combined up to five 'NEOLI' ( No-t...

Forest roads can create small- scale climate change. These changes can vary with the road age and topographic conditions. This study aimed to identify ecological species group as well as study the relationship between vegetation and environmental factors based on the road age. The study was carried out in three-districts of Nav- Asalem in Watershed 7 of forests of North of Iran. Therefore, 140 ...

2017
Sterling Somers

A representational approach to ecological psychology is presented. This paper identifies a computational-level commonality in ecological psychology research related to passability of apertures. It is argued that a cognitive mechanism capable of comparing the geometric properties of an environment and the geometric properties of the agent can be used to support judgments for action in space.

Journal: :Presence 1998
Pavel Zahorik Rick L. Jenison

An alternative view of presence is introduced based on existential philosophy and ecological psychology. This view favors a Heideggerian/Gibsonian metaphysic over the more conventional rationalistic orientation. In this alternative view, notions of subjective presence and objective presence no longer exist. Presence is instead tied to one’s successfully supported action in the environment, this...

Journal: :Evolution; international journal of organic evolution 2016
Christopher H Martin

Ecological opportunity is frequently proposed as the sole ingredient for adaptive radiation into novel niches. An additional trigger may be genome-wide hybridization resulting from "hybrid swarm." However, these hypotheses have been difficult to test due to the rarity of comparable control environments lacking adaptive radiations. Here I exploit such a pattern in microendemic radiations of Cari...

2009
Glyn Harman Angel Kumchev

Abstract. In this paper we continue our study, begun in [11], of the exceptional set of integers, not restricted by elementary congruence conditions, which cannot be represented as sums of three or four squares of primes. We correct a serious oversight in our first paper, but make further progress on the exponential sums estimates needed, together with an embellishment of the previous sieve tec...

Journal: :مجله دانشکده پرستاری و مامایی ارومیه 0
مجید خاری آرانی m khari arani حمید آسایش h asayesh زهرا علی اکبرزاده آرانی z aliakbarzadeh arani علی زارع سروی a zareh sarvi

comparing mental health of normal student's teacher with the teachers of exceptional students     khari arani m [1] ,asayesh h [2] ,aliakbarzadeh aranit [3] *,zareh sarvi a [4]     received: 7 oct , 2013 accepted: 1 jan , 2014     abstract   background & aims : the purpose of this study is to determine the difference between normal student's teachers and teachers of exceptional studen...

2011
Jonas Linderoth

This paper outlines a framework for understanding gameplay from the perspective of ecological psychology. According to this perspective, gameplay can be described in terms of perceiving, acting on and transforming the affordances that are related to a game system or to other players in a game. Challenges in games have an emphasis on perceiving suitable actions and/or performing suitable actions...

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