نتایج جستجو برای: روش ols
تعداد نتایج: 374040 فیلتر نتایج به سال:
We propse the one-line search (OLS) method for estimating the three-dimensional (3-D) model of an object from a sequence of images where the object is visible from different points of view. The OLS method estimates each 3-D point through a OLS along the ray defined by the camera center and its two-dimensional (2-D) image projection in one view by maximizing a photo-consistency index built with ...
One of the more surprising recent discoveries in glial biology has been that oligodendrocytes (OLs) originate from very restricted regions of the embryonic neural tube. This was surprising because myelinating OLs are widespread in the mature central nervous system, so there was no reason to suspect that their precursors should be restricted. What we now know about early OL development suggests ...
در این تحقیق برای بررسی اثر شاخص های کلان بر توزیع درآمد در ایرران از مغییرهرای سهم مجموع مالیات بر درآمد وثروت بر کل درآمد مالیاتی، سهم هزینه های تامین اجغمرایی و بهزیسغی در بودجه دولت، اخغلال نرخ ارز، رشد درآمد سرانه و نرخ بیکاری اسرغااد شرد است. در مطالعه جاری برای تعیین ارتبرا بنندمردت مغییرهرا از رود قردارل مربعرات کراملا اصلاح شد -ols) (fm فینیپس و هنسن ) 991 ( اسغااد شرد اسرت . نغرای قاص...
کشاورزی در منطقة سیستان نقش بسزایی در درآمدزایی و اشتغال روستاییان این منطقه دارد و بررسی عملکرد و عوامل رفتاری تأثیرگذار بر آن اهمیت ویژه ای دارد. ازاین رو در مطالعة حاضر ضمن بررسی خصوصیات اقتصادی- اجتماعی روستاییان، به بررسی عوامل مؤثر بر عملکرد واحدهای کشاورزی در این منطقه پرداخته شده است. داده ها و اطلاعات لازم از طریق تکمیل 100 پرسشنامه از کشاورزان منطقه به دست آمد. برای تحلیل نتایج و یافت...
In regression analysis for deriving scaling laws that occur in various scientific disciplines, usually standard regression methods have been applied, of which ordinary least squares (OLS) is the most popular. In many situations, the assumptions underlying OLS are not fulfilled, and several other approaches have been proposed. However, most techniques address only part of the shortcomings of OLS...
There are three broad classes of models used to address the econometric problems caused by skewness in data commonly encountered in health care applications: (1) transformation to deal with skewness (e.g., OLS on ln(y)); (2) alternative weighting approaches based on exponential conditional models (ECM) and generalized linear model (GLM) approaches; and (3) survival models (Cox proportional haza...
This paper provides some small sample evidence on the appropriateness of ordinary least squares (OLS) and instrumental variable (IV) estimators of the structural equation, and on the appropriate method of performing hypothesis testing in event studies when generated variables are present. In event studies, the number of observations used to estimate the auxiliary equations (and compute the gene...
Increasing evidences suggest that, after neuregulin (NRG) stimulation, ErbB4 undergoes a series of proteolysis, including c-secretase cleavage. The released ErbB4 intracellular domain (EICD) is translocated into nucleus and has a transcriptional function. Although NRG–ErbB4 signaling mediates maturation of oligodendrocytes (OLs), the role of EICD and c-secretase in this process remains elusive....
In advanced electronic circuits the reliability has been a major concern. There are number of mitigation techniques proposed to make sure that the errors do not affect the circuit functionality. Among them, to protect the memories and registers in electronic circuits Error Correction Codes (ECC) are commonly used. Whenever any ECC technique is used, the encoder and decoder circuit may also suff...
Consider a general regression model, where the response Y depends on discrete predictors X only through the index βX. It is well-known that the ordinary least squares (OLS) estimator can recover the underlying direction β exactly if the link function between Y and X is linear. Li and Duan (1989) showed that the OLS estimator can recover β proportionally if the predictors satisfy the linear cond...
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