نتایج جستجو برای: ordination analysis
تعداد نتایج: 2826573 فیلتر نتایج به سال:
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...
The cosmopolitan genus salvia L. (Lamiaceae) consists of nearly 1000 species distributed throughout the Old and New Worlds. America and South- West of Asia are the two most important distribution centers. Of the 70 species reported in the flora Iranica area nearly 56 species belong to Iran. This investigation deals with the morphology of Salvia. The morphological studies were performed on 36 po...
a r t i c l e i n f o Spatial observations of plant occurrences contain a wealth of information on relations among species and on the relation between species and environmental conditions. Typically, inventory data of this kind are large co-occurrence matrices, and hence, direct ecological interpretations based on expert knowledge are often very difficult. Hitherto, ordination approaches have b...
Ordination is the name given to a group of methods used analyse multiple variables without preceding hypotheses. Over last few decades, use these in Earth science general, and notably analyses sedimentary sources, has dramatically increased. However, with limited resources oriented towards scientists on topic, application ordination analysis at times suboptimal misuse by authors can occur. This...
Canonical Correspondence Analysis (CCA) is quickly becoming the most widely used gradient analysis technique in ecology. The CCA algorithm is based upon Correspondence Analysis (CA), an indirect gradient analysis (ordination) technique. CA and a related ordination technique, Detrended Correspondence Analysis, have been criticized for a number of reasons. To test whether CCA suffers from the sam...
This paper describes the usefulness of the group of multivariate techniques belonging to ordination for the analysis of ecotoxicological data sets. It is argued that although ecotoxicologists often gather multivariate data sets, they usually do not evaluate them with techniques that can handle multivariate data. Ordination techniques enable the researcher to extract an underlying structure out ...
The objective of this paper is to compare the cost effectiveness of a co-ordination service with standard services for terminally ill cancer patients with a prognosis of less than one year. We designed a randomized controlled trial, with patients randomized by the general practice with which they were registered. Co-ordination group patients received the assistance of two nurse coordinators who...
A stratigraphically oriented series of the Miocene foraminiferal species Brizalina mandoroveensis from Ikang, Cameroon, was analyzed both by conventional multivariate morphometric procedures and by the tensor biometric method of Bookstein (1986; Statist. Sci. 1,181-142), a method which analyzes sets of landmark points rather than specific variables of shape or size. The conventional analysis us...
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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