نتایج جستجو برای: تجزیه کاهشی rda
تعداد نتایج: 115765 فیلتر نتایج به سال:
Considering the need for metadata standards suitable for the Semantic Web, this paper describes the RDA Element Sets and the RDA Value Vocabularies that were created from attributes and relationships defined in Resource Description and Access (RDA). First, we present the vocabularies included in RDA Element Sets: the vocabularies of classes, of properties and of properties unconstrained by FRBR...
OBJECTIVE Current dietary guidelines recommend adequate intake of magnesium (310-420 mg daily) in order to maintain health and lower the risk of cardiovascular disease. Recent evidence from animal and clinical studies suggests that magnesium may be associated with inflammatory processes. The objective of this study was to determine whether dietary magnesium consumption is associated with C-reac...
This paper studies Regularized Discriminant Analysis (RDA) in the context of face recognition. We check RDA sensitivity to different photometric preprocessing methods and compare its performance to other classifiers. Our study shows that RDA is better able to extract the relevant discriminatory information from training data than the other classifiers tested, thus obtaining a lower error rate. ...
زمینه و هدف: دریافت موادغذایی و شاخصهای تنسنجی، نقش قابلتوجهی در بروز و پیشرفت فشارخون دارند. در این مطالعه ضمن ارزیابی شاخصهای تنسنجی، دریافت مواد مغذی مؤثر در بروز و تشدید علائم فشارخون در زنان یائسه با سابقه ابتلا به این بیماری بررسی گردید. روش بررسی: این مطالعه به روش مقطعی - تحلیلی، بر روی 211 زن یائسه مبتلا به فشارخون بالا و ساکن استان قم انجام شد. ابتدا وزن، قد، دورکمر به دور باسن د...
در جوامع گیاهی مناطق خشک، متغیرهای اقلیمی، شامل بارندگی و دما با تأثیر بر میزان رطوبت قابل دسترس درون پروفیل خاک، ترکیب و تولیدات گیاهی را تحت تأثیر قرار می-دهند. در این راستا، مطالعه ای طی نه سال و با هدف بررسی تأثیر متغیرهای اقلیمی بارش و حداکثر درجه حرارت بر تولید گونه های مهم گیاهی مراتع منطقه گاریز سفلی یزد انجام شد. به این منظور هر ساله تولید گیاهان عرصه با روش نمونه گیری مضاعف، داخل 60 پ...
The Joint Steering Committee for Development of RDA has been working on a new standard for resource description and access designed for the digital world: RDA. This standard is scheduled to be released at the end of November 2009. RDA will provide a flexible framework for describing all resources analog and digital, i. e. data that is readily adaptable to new and emerging database structures an...
1. Forty-two mothers from social classes I, II and III non-manual and twenty-one from social classes III manual M), IV and V were studied longitudinally. The mean daily nutrient intakes in months 4-9 of pregnancy, months 2-4 of lactation and 3 and 6 months post-lactation are presented and are compared with the UK and the US recommended daily allowances (RDA). 2. The quality of the diets (nutrie...
As natural eggs can contribute significantly to overcoming dietary deficits, we have designed and studied the composition of multiple-enriched eggs (Benefic eggs) whose composition is close to the natural egg. They are obtained by feeding laying hens in the usual way, but using additional autoclaved linseed, minerals, vitamins and lutein to provide the extra components. These eggs have greater ...
We present a generalized multivariate seismic event identification method, Regularized Discrimination Analysis (RDA) [Friedman 1989], that can be applied to a large number of regional discriminants. RDA is readily adaptable to an outlier or classical identification approach to regional seismic identification. RDA is designed to address the problems associated with linear (LDA) and quadratic (QD...
Using the recommended daily allowance (RDA) to assess dietary adequacy implies making a direct comparison between RDA and some measure of dietary intake. The value and usefulness of doing so must clearly depend on the limitations of each. By definition the RDA are intended to cover ‘the average amount of the nutrient, which should be provided per head in a group of people if the needs of practi...
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