نتایج جستجو برای: 6 principal components explained approximately 825 percent of the total variance

تعداد نتایج: 22949531  

2009
Stephanie Tuttle Nicholas Cassavaugh Richard W. Backs

Groups of younger (n=49, M age = 21.7 years) and older (n=52, M age = 73.0 years) adults performed computer-based cognitive tests and simulated driving. Results from the cognitive tests were submitted to Principal Components Analysis (PCA) and 6 components were extracted that explained more than 77% of the variance. The components were labeled speed, divided, sustained, executive, selective/inh...

Journal: :practice in clinical psychology 0
farhad khormaei department of educational psychology, school of education and psychology, shiraz university, shiraz, iran. azam farmani tehran farzane yazdani department of educational psychology, school of education and psychology, shiraz university, shiraz, iran.

objective: the current study aimed at investigating the role of patience and its components in predicting self-control among high school students in shiraz, iran. methods: the statistical population of the study included all high school students of shiraz. three hundred and thirty-two students (161 females and 171 males) were recruited via cluster sampling method. the subjects participated in t...

پایان نامه :0 1374

in fact, this study focused on the following questions: 1. is there any difference between the effect of functional/notional approach and the structural approaches to language teaching on the proficiency test of efl learners? 2. can a rather innovative language test referred to as "functional test" ge devised so so to measure the proficiency test of efl learners, and thus be as much reliable an...

اکرامی, محمود, رجب زاده, سمیه ,

This research was conducted with the aim of improving managers’ competency through specifying the factors of their competency. In order to find the right answer to the question of this research, a researcher-made questionnaire was devised including 137 items on the basis of a four-level necessity scale, i.e. lowest, relatively low, high, and highest, valued respectively as 1, 2, 3, and 4. The q...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1389

this study purported to compare and contrast the use of self-mention and evidentials as two mtadiscourse features in opinion columns of persian and english newspapers. the theoretical basis of this study is the idea that metadiscourse features vary across cultural boundaries. for this purpose, 150 persian and 150 english opinion columns were collected based on three factors of topic, audience a...

Journal: :پژوهش های حبوبات ایران 0
زهرا عرفانی مقدم جلال صبا

assessment of different plant genetic resources clarifies genetic variation and makes it possible to apply them in plant breeding programs. in this experiment, 27 selected lines of common bean (phaseolus vulgaris l.), one local landrace and two conventional bean cultivars (talash and cos-16 as controls), sown using randomized complete block design with three replications in the research farm of...

خدا رحم پور, زهرا , چوکان , رجب,

In order to determine the best index for evaluating maize genotypes, 28 maize hybrids were evaluated in two planting dates, 6 July to coincide heat stress with pollination time and 27 July as normal planting to avoid high temperature during pollination and grain filling period, using a randomized complete block design with three replications, in Shushtar city, in 2008. Results showed that in st...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

Objective: The current study aimed at investigating the role of patience and its components in predicting self-control among high school students in Shiraz, Iran. Methods: The statistical population of the study included all high school students of Shiraz. Three hundred and thirty-two students (161 females and 171 males) were recruited via cluster sampling method. The subjects participated in ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1387

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

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