The Frontier: Comparative Studies

Towards a Frontier of Spatial Scientometric Studies

The research field of spatial scientometrics is dedicated to measuring and analyzing science with spatial components (e.g., location, place, mapping). It involves the study of spatial patterns, impacts and trends of scientific activities (e.g., co-publication, citation, academic mobility) based on bibliographic databases. Because of the dynamic nature of this field, researchers from interdiscip...

the comparative assessment of technical efficiency in the iran cement industry (stochastic frontier analysis approach)

the different model specifications have been proposed to estimate time-varying technical efficiency in the last two decades. these models have resulted different efficiency scores based on their built-in specifications. this study investigates the temporal pattern of technical efficiency based on cornwell, sickles, and schmidt (css, 1990) as well as lee and schmidt (ls, 1993) models. in order t...

comparative dna interaction studies of antiviral drug, zidovudine and its complex using different instrumental methods

هدف از این مطالعه بررسی امکان استفاده از داروهای شناخته شده در درمان سایر بیماریها به عنوان داروهای ضد سرطان است. همچنین با استفاده از این داروها در ساختمان کمپلکس فلز می توان شاخص های دارویی بدست آمده را بررسی نمود. داروی ضد ویروس ایدز(hiv)به نام زیدوودین(azt)انتخاب و.کمپلکس.محلول.در.آب[pt(azt)2]cl2سنتزو به روشهای مختلف فیزیکی و شیمیایی شناسایی گردید. بر هم کنش مقایسه ای این دارو و کمپلکس پلا...

Comparative Analysis of Stochastic Frontier Partially non-parametric and Stochastic Frontier Parametric Methods Case Study: Measuring Cost Efficiency in Wheat Production in Iran

Comparative issues in large-scale mean-variance efficient frontier computation

Available online 25 November 2010