نتایج جستجو برای: ordination

تعداد نتایج: 3576  

Journal: :Systematic Biology 2003

ژورنال: :مجله گیاهشناسی ایران 2009
نسیم اذانی مسعود شیدایی فریده عطار

بررسی خصوصیات مورفولوژیکی و دانه های گرده در جمعیت های 12 گونه achillea از سه بخش santolinoidea ، millefolium و  filipendulinae انجام گرفت. تعداد 33 صفت ریختی شامل 13 صفت کمی و 20 صفت کیفی برسی شدند. آنالیز واریانس وجود اختلاف معنی دار را در بسیاری از صفات کمی در میان جمعیت ها و گونه های مطالعه شده نشان داد. تجزیه خوشه ای بر اساس صفات کمی و نیز توام با صفات کیفی، جدایی جمعیت های یک گونه را از د...

2012
Jari Oksanen

Constrained ordination methods include constrained (or canonical) correspondence analysis (CCA), redundancy analysis (RDA) and distancebased redundancy analysis (db-RDA). Constraining means that ordination only shows the community variation that can be explained by external environmental variables or constraints. This document describes the following basic concepts (1) usage of constrained ordi...

2001
Andreas Gerber Christian Ruß

This paper presents a holonic co-ordination server which is made up of a recursive hierarchy of three different agent types: On the top stands an agent providing matchmaking services and representing the co-ordination server to the outside. It passes incoming requests to a subordinated agent type that is equipped with co-ordination mechanisms such as auctions, negotiations and coalition formati...

1995
Sascha Ossowski Ana M. García-Serrano

Co-ordination is one of the central research issues in Distributed Artificial Intelligence. Most of the efforts in designing co-ordination mechanisms set out from an agent-centred point of view: they see the individual actor with its local beliefs and reasoning capabilities as the foundation of all system properties. Our thesis is that co-ordination is best modelled from an environment-centred,...

2007
Frank Gavin

Because Christian rites of ordination regularly involve the imposition of hands, scholars generally recognize the importance of understanding this practice. Instituted early in the church's development and thus in dose proximity with its Jewish origins, the imposition of hands has been thought by scholars to stem most likely from OT roots.' Jewish exegetes and Pentateuchal critical scholars hav...

Journal: :Psychiatric Bulletin 1993

Journal: :Information & Software Technology 2004
Ian R. McChesney Séamus Gallagher

In this paper we report on the investigation, description and analysis of communication and co-ordination practices in software engineering projects. We argue that existing models of the software process do not adequately address the situated, day-to-day practices in which software engineers collectively engage, yet it is through these practices that effective co-ordination is achieved. Drawing...

Journal: :journal of rangeland science 0
vahid karimian young researchers and elite club, yasooj branch, islamic azad university, yasooj, iran. mohammad reza vahabi assistant professor, department of range and watershed, natural resources college, isfahan university of technology, isfahan, iran. javad roustakhiz member of research instructor, department of plant production, higher education complex of saravan, iran. negin nodehi phd student of range management, gorgan university of agricultural sciences and natural resources sciences, gorgan, iran

the effect of environmental factors on plant vegetation is different. therefore, it is necessary to evaluate role of these factors in medicinal plants growth, development and essential oil. this study was performed to investigate the effect of factors on qualitative and quantitative variations of the essential oil of verbascum songaricum in its habitats in central zagros mountains, iran in 2012...

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