نتایج جستجو برای: quaids

تعداد نتایج: 39  

2014
Paola De Agostini

This paper investigates the effect of price variations on the diet composition in Britain. It describes the dynamics of food demand in relation to food prices over time using data from the British National Food Survey (NFS) covering the period 1975-2000. Demand elasticities with respect to price elasticities are estimated by solving a quadratic almost ideal demand system (QUAIDS) model controll...

Journal: :international journal of business and development studies 0

abstract: on december 2010, the government of iran ended the decades-long subsidy program for bread and energy products and launched the targeted subsidy reform program that considerably raised prices of food products. the objective of the study was to measure welfare impacts of food price changes on iranian urban households between two survey data of 2009/10 and 2011/12 which were taken from i...

Journal: :international journal of agricultural management and development 2014
mohammad ghahremanzadeh mohammad bagher ziaei

iran has experienced high food prices in recent years. this paper examines the welfare impacts of rising major food groups' prices on iranian urban households using quadratic almost ideal demand system (quaids) approach. the elasticity coefficients derived from quaids are used to estimate compensated variations (cv).the study uses iranian household expenditure and income survey (heis) raw data,...

Mohammad Bagher Ziaei Mohammad Ghahremanzadeh

Iran has experienced high food prices in recent years. This paper examines the welfare impacts of rising major food groups' prices on Iranian urban households using Quadratic Almost Ideal Demand System (QUAIDS) approach. The elasticity coefficients derived from QUAIDS are used to estimate Compensated Variations (CV).The study uses Iranian Household Expenditure and Income Survey (HEIS) raw data,...

احمد اکبری, سید مسعود برکاتی محمد باقر ضیایی مهری احمدی جاوید,

    در این مطالعه، به بررسی تقاضای مواد غذایی خانوارهای شهری استان سیستان و بلوچستان از راه داده‌های خام درآمد و هزینه‌‌ی خانوار 1390 و با استفاده دو سیستم تقاضای شبکه عصبی و سیستم تقاضای تقریبا ایده‌آل درجه دوم پرداخته و مقدار دقت این دو سیستم بررسی شد. برای برآورد تقاضا براساس طبقه‌بندی COICOP موادغذایی به نه گروه اصلی طبقه‌بندی شدند. نتایج NNDS که با استفاده از یک شبکه پیش‌خور و پرسپترون چند...

Journal: :International journal of agriculture extension and social development 2022

The global energy supply has been increasing over the years, in an effort to meet demand many of world’s poor population are being left behind. It estimated that approximately 1.4 billion people (20%) lack access electricity and 2.7 (40%) population, rely on traditional use biomass for cooking. This study reveals firewood is main type cooking used or demanded by respondents. Among various reaso...

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