Study on Web-related Spatial Design Research Trend
نویسندگان
چکیده
منابع مشابه
The Trend-in-trend Research Design for Causal Inference
Cohort studies can be biased by unmeasured confounding. We propose a hybrid ecologic-epidemiologic design called the trend-in-trend design, which requires a strong time trend in exposure, but is unbiased unless there are unmeasured factors affecting outcome for which there are time trends in prevalence that are correlated with time trends in exposure across strata with different exposure trends...
متن کاملOptimal Spatial Network Design for Temporal Trend Estimation
The location of spatial sampling points so as to minimize a mean squared error criterion is a common concern in the design of monitoring networks. When the objective is temporal trend estimation, one could seek to minimize the variance of the generalized least-squares estimate of trend. This paper describes a general class of spatio-temporal models possessing separable mean and covari-ance and ...
متن کاملMapping soybean physiology research based on the web of science
The aim of this paper was to map the scientific research on soybean physiology by usingbibliographic review and analyses of papers indexed up to July 31, 2014 in the web of sciencedatabase. A total of 1682 non-redundant bibliographic records were curated. The soybeanphysiology research experienced two major periods. The first period was from 1943 when thefirst soybean paper was published to 198...
متن کاملتحلیل موتور توربوپراپ در شرایط on-design و off-design
در این رساله عملکرد یک موتور توربوپراپ که ملخ آن از نوع clark y 5868-r9 است در شرایط نقطه طرح (on- design) و خارج از نقطه طرح (off- design) مورد مطالعه قرار گرفته شده است. موتور توربوپراپ یکی از انواع موتور جت در تراست بالا و مصرف مخصوص سوخت پایین است که عدد ماخ پروازی آن هرگز از 8/. تجاوز نمی کند. دور موتور های توربوجت به حدی زیاداست که در صورت اتصال مستقیم به ملخ، سرعت نوک تیغه های ملخ به سرع...
15 صفحه اولThe Tobacco Research Network on Disparities (TReND).
T here are two important goals for the USA in Healthy People 2010. The first is to increase quality and years of healthy life. The second is to eliminate health disparities. These disparities include differences in tobacco related outcomes as well as patterns of tobacco use by gender, race/ethnicity, socioeconomic status and socioeconomic position (that is, education, income, occupational statu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Digital Convergence
سال: 2014
ISSN: 1738-1916
DOI: 10.14400/jdc.2014.12.8.481