نتایج جستجو برای: negative deviational variable

تعداد نتایج: 778854  

Journal: :تحقیقات اقتصادی 0
حمید ابریشمی استاد دانشکده‎ی اقتصاد دانشگاه تهران محسن مهرآرا دانشیار دانشکده اقتصاد دانشگاه تهران سارا صفا مطلق کارشناس ارشد اقتصاد

this paper studies the technical efficiency of 12 branches of saman bank over the period 1387-88, relating it to the composition of staff by sex, the ratio of fixed assets to total assets, the age of the branches and the geographic ranking in development indicators of the city where the branch is located in. data envelopment analysis is used to determine the efficiency of branches. the average ...

Journal: :Remote Sensing 2022

Carbon emissions caused by the massive consumption of energy have brought enormous pressure on Chinese government. Accurately and rapidly characterizing spatiotemporal characteristics city-level carbon is crucial for policy decision making. Based multi-dimensional data, including nighttime light (NTL) land use (LU) surface temperature (LST) added-value secondary industry (AVSI) a deep neural ne...

Journal: :زن در توسعه و سیاست 0
سعید فرح بخش دانشیار گروه علوم تربیتی دانشگاه لرستان ایرج نیک پی استادیار گروه علوم تربیتی دانشگاه لرستان راضیه قنبری دانشجوی کارشناسی ارشد مدیریت آموزشی دانشگاه لرستان

the aim of this study was to evaluate the effect of the glass ceiling on women creative ideas working in administrative province units of lorestan state with moderating of their self-concept variable. the population of this cross-correlation study included all women employees of administrative province units of lorestan state. using stratified sampling, and based on morgan table, 306 persons we...

Journal: :تحقیقات اقتصادی 0
رحمان سعادت استادیار دانشگاه سمنان

the main aim goal of this paper is estimating time series of social capital in iran. for this aim, first we have reviewed theoretical and empirical literature of social capital, and then we used fuzzy method for estimating time series of social capital. we used latent variable, because social capital is a qualify variable. crime and participation indexes are two related variables with social ca...

Journal: :بوم شناسی کشاورزی 0
سجاد میجانی علی قنبری مهدی نصیری محلاتی

in order to examine the multi-species weed competition in corn field an experiment as an interval mapping was carried out at the agricultural research field of ferdowsi university of mashhad during growing season 2009-2010. at 3-4 leafy stages of corn, 20 non-destructive quadrates determine and the density of weeds was counted separately. at the same time, 20 destructive quadrates determine and...

2009
Daniel Johannsen Igor Razgon Magnus Wahlström

In this paper we consider the class of boolean formulas in Conjunctive Normal Form (CNF) where for each variable all but at most d occurrences are either positive or negative. This class is a generalization of the class of CNF formulas with at most d occurrences (positive and negative) of each variable which was studied in [Wahlström, 2005]. Applying complement search [Purdom, 1984], we show th...

2013
Ali Al Nima Patricia Rosenberg Trevor Archer Danilo Garcia

BACKGROUND Mediation analysis investigates whether a variable (i.e., mediator) changes in regard to an independent variable, in turn, affecting a dependent variable. Moderation analysis, on the other hand, investigates whether the statistical interaction between independent variables predict a dependent variable. Although this difference between these two types of analysis is explicit in curren...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی کامپیوتر 1387

با گسترش روزافزون شبکه های کامپیوتری و استفاده از آن، مسائل امنیتی در این ارتباطات در سالهای اخیر اهمیت ویژه ای یافته است. بزرگترین خطر امنیتی که اینترنت در حال حاضر با آن مواجه است، انتشار سریع نرم افزارهای بدخواه اینترنتی است. طرحهای مبتنی بر امضا غالباً در تشخیص نرم افزارهای بدخواه یک روزه ناتوان بوده و با توجه به اینکه نوعاً نیازمند دخالت انسانی برای فرموله کردن امضاهای حملات جدید هستند، توان...

2013
Amr E. Rizk

A wideband variable gain amplifier (VGA) design is introduced with two different schemes. It is based on a fully differential amplifier with resistive loads, and a Negative Miller Capacitance technique is used to increase the bandwidth of the amplifier. The amplifier consists of three stages, and the gain is varied through the second and third stages, where they are degenerated by a voltage con...

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