نتایج جستجو برای: coefficient of variance

تعداد نتایج: 21171462  

2016
Lei Tian Jing-hao Qu Xiao-yu zhang Xu-guang Sun

Purpose. To determine the intraexaminer repeatability and interexaminer reproducibility of tear meniscus height (TMH) and noninvasive Keratograph tear breakup time (NIKBUT) measurements obtained with the Keratograph 5M (K5M) in a sample of healthy and dry eye populations. Methods. Forty-two patients with dry eye disease (DED group) and 42 healthy subjects (healthy group) were recruited in this ...

2016
arMiN scHreiNer aDaM kWiaTkoWski jaN szYszko aXeL scHWerk Axel Schwerk

Background and purpose: Body mass distributions may be related to the stage of succession of a habitat and provide with information for assessing successional processes. Therefore, body mass distributions of carabid assemblages were studied in three research areas, which were post-industrial areas near the city of Bełchatów (Central Poland) planted with different tree and shrub species, moist a...

2013
Philippe Castagliola Ali Achouri Hassen Taleb Giovanni Celano Stelios Psarakis

Monitoring the coefficient of variation (CV) is a successful approach to Statistical Process Control when the process mean and standard deviation are not constant. In recent years the CV has been investigated by many researchers as the monitored statistic for several control charts. Viewed under this perspective, this paper presents a new efficient method to monitor the CV by means of Run Rules...

2009
Mark D. Smith Richard G. Hamrick L. Wes Burger John P. Carroll

Point transect sampling of calling coveys has been advocated for estimating autumn abundance of northern bobwhite (Colinus virginianus; hereafter bobwhite). We conducted power analysis, over a range of expected bobwhite calling covey densities to determine levels of sampling required to obtain density estimates for calling coveys over a wide range of precision. We used distance/detection inform...

2009
C. M. Deng

The maximum strain experienced by the thinnest segment of a non-uniform fiber governs fiber breakage, yet this maximum strain can not be obtained from a normal single fiber test. Only the average strain of the whole fiber specimen can be obtained from a normal single fiber tensile test. This study has examined the relationship between the average strain, the maximum strain and the degree of fib...

2006
D. B. Arnall W. R. Raun J. B. Solie M. L. Stone G. V. Johnson K. Girma K. W. Freeman R. K. Teal K. L. Martin

The use of by-plot coefficient of variation (CV) has not been evaluated in precision agricultural work. This study evaluated the relationship between CVs determined from normalized-difference vegetative index (NDVI) sensor readings, plant population, and sensing direction on NDVI values. Randomly selected plots, measuring 1 m2 (2003) and 3 m2 (2004), were established for this study. Plots in 20...

Journal: :کشاورزی (منتشر نمی شود) 0
مجتبی ‏وهاب زاده عضو هیأت علمی مؤسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج - ایران‏ اشکبوس ‏امینی عضو هیأت علمی مؤسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج - ایران‏ معرفت ‏قاسمی عضو هیأت علمی مؤسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج - ایران‏ محمود ‏ناظری عضو هیأت علمی مؤسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج - ایران‏ شیرعلی ‏کوهکن عضو هیأت علمی مؤسسه تحقیقات اصلاح و تهیه نهال و بذر، کرج - ایران‏

to study the stability and adaptability of grain yield and genotype ‎‏×‏‎ environment interaction, ‎‎19 promising triticale lines/varieties were evaluated in moghan, mashhad and zabol experimental ‎stations during 2001 to 2003 cropping seasons. the experimental design in all the locations and ‎years was completely randomized block design with three replications. combined analysis of ‎variance c...

2003
Evangelos A. Christou Yang Yang Karl S. Rosengren

The purpose of this study was to examine the effects of Taiji training on knee extensor strength and force control in older individuals. Twenty-six healthy older adults (71.9 6 1.8 years) participated in the study. Sixteen of the older adults (70.2 6 1.8 years) underwent Taiji training for 20 weeks (experimental group), whereas the other 10 (74.6 6 1.2 years) served as the control group. For bo...

2009
James C. Cox Vjollca Sadiraj

Weber, Shafir, and Blais (2004) advocate use of the coefficient of variation (CV) as a measure of risk sensitivity and apply CV in a meta-analysis of data for risky choices by humans and animals. We critically re-examine the CV measure as either a normative or descriptive criterion for decision under risk. CV fails as a normative criterion because it violates first order stochastic dominance. W...

Journal: :علوم گیاهان زراعی ایران 0
ایمان عشقی دانشجوی سابق کارشناسی ارشد اصلاح نباتات، دانشگاه محقق اردبیلی، اردبیل، ایران رسول اصغری زکریا دانشیار، دانشکدۀ علوم کشاورزی، دانشگاه محقق اردبیلی، اردبیل، ایران علیرضا نبی پور استادیار، سازمان تحقیقات، آموزش و ترویج کشاورزی، مؤسسۀ تحقیقات برنج کشور، آمل، ایران امید سفالیان دانشیار، دانشکدۀ علوم کشاورزی، دانشگاه محقق اردبیلی، اردبیل، ایران محمد نوروزی مربی، سازمان تحقیقات، آموزش و ترویج کشاورزی، مؤسسۀ تحقیقات برنج کشور، آمل، ایران

in order to investigate the yield stability of eight promising rice genotypes, these lines along with shiroudi and fajr cultivars as control were sown in three regions of mazandaran province (amol, sari and tonekabon) as randomized complete block arrangements with three replications in 2012 and 2013. analysis of variance for grain yield indicated significant differences among the genotypes in a...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید