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Registros recuperados: 102
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A DYNAMIC DIFFERENTIAL DEMAND SYSTEM: AN APPLICATION OF TRANSLATION AgEcon
Brown, Mark G.; Lee, Jonq-Ying.
The differential demand system or Rotterdam model is extended to include lagged consumption through translation parameters, allowing habit and inventory effects. Applications of the model to annual U.S. expenditure and weekly juice sales data illustrate the importance of the time interval of an observation on the relative strengths of the habit inventory.
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1992 URL: http://purl.umn.edu/29646
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A dynamic differential demand system: an application of translation AgEcon
Brown, Mark G..
The differential demand system or Rotterdam model is extended to include lagged consumption through translation parameters, providing an alternative to simply adding constant terms to the model to allow for trends in consumption and changes in tastes. Application of the model to four broadly defined groups of goods indicates significant lag effects, resulting in differences in short-run and long-run income and price responses.
Tipo: Report Palavras-chave: Differential demand system; Translation; Demand and Price Analysis.
Ano: 1991 URL: http://purl.umn.edu/52716
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A family of inverse demand systems and choice of functional form AgEcon
Brown, Mark G.; Lee, Jonq-Ying.
Tipo: Report Palavras-chave: Inverse demand systems; Choice of functional form; Demand and Price Analysis.
Ano: 1994 URL: http://purl.umn.edu/52743
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A general differential demand model for mixed quantity- and price-dependent equations AgEcon
Brown, Mark G.; Lee, Jonq-Ying; Gao, Xiaoming.
A mixed demand system is developed using the fundamental matrix equation of demand theory. The model parameterization combines the parameterizations of the quantity- and price- dependent Rotterdam models. The relationship between the mixed-demand-model parameters and the underlying direct and indirect utility functions allows analysis of various separability assumptions.
Tipo: Report Palavras-chave: Mixed demand; Rotterdam model; Fundamental matrix; Demand and Price Analysis.
Ano: 1993 URL: http://purl.umn.edu/52735
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A Study of the Demand for Medical Services in Taiwan AgEcon
Chung, Rebecca H.; Lee, Jonq-Ying; Brown, Mark G..
This paper presents a version of the household production theory to explain the demand for health. In this study we have explored the factors that influence the demand for medical services and medical expenditures in Taiwan. A negative binomial model was used to study the demand for medical services. We found that the demand for medical services and medical expenditures are related to household composition, household income, family size, occupation of the household head, and living environments. In addition, we found higher usage of medical services on average for those households with medical insurances other than the national health insurance.
Tipo: Working or Discussion Paper Palavras-chave: Medical service; Demand; Negative binomial model; Count data; Health Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/53389
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A study of the demand relationship between fixed-weight and random-weight citrus AgEcon
Gao, Zhifeng; Lee, Jonq-Ying; Brown, Mark G..
Using Rotterdam demand system this study examines the demand relationships among four random-weight (FW) and fixed-weight citrus (RW). Results indicated that FW and RW grapefruit (and FW and RW oranges) are not substitutes; however, RW tangerine is a substitute of FW tangerines. In addition, promoting FW grapefruit would not influence the demand for RW grapefruit and vice versa. Promoting FW oranges (or FW tangerines) would decrease the demand for RW oranges (or RW tangerines) and vice versa.
Tipo: Conference Paper or Presentation Palavras-chave: Agribusiness; Demand and Price Analysis.
Ano: 2009 URL: http://purl.umn.edu/49466
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A study of the impact of grapefruit-drug interaction on the demand for grapefruit juice AgEcon
Lee, Jonq-Ying; Brown, Mark G..
Tipo: Report Palavras-chave: Grapefruit juice; Drug interaction; Demand; Agribusiness; Demand and Price Analysis.
Ano: 2001 URL: http://purl.umn.edu/52884
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A UNIFORM SUBSTITUTE DEMAND MODEL WITH VARYING COEFFICIENTS AgEcon
Brown, Mark G.; Lee, Jonq-Ying.
This study extends Barten's synthetic demand modeling approach to increase the flexibility of the uniform substitute specification of the Rotterdam demand system. Marginal propensities to consume (MPC) vary with budget shares and Slutsky coefficients are defined in terms of varying MPCs. An application of the model to orange-juice products shows that the pattern of income and price elasticities over time is much different than when MPCs are restricted to be constant.
Tipo: Journal Article Palavras-chave: Demand; Varying coefficient; Rotterdam model; Orange juice; Demand and Price Analysis.
Ano: 2000 URL: http://purl.umn.edu/15403
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Advertising and Product Confusion: A Case Study of Grapefruit Juice AgEcon
Brown, Mark G.; Lee, Jonq-Ying; Behr, Robert M..
Demand relationships for two closely related products -- grapefruit juice and grapefruit-juice cocktail -- were estimated from grocery-store scanner data to analyze the contention that consumer confusion exists between the two products. Results suggest confusion may exist, with grapefruit-juice advertising not only increasing the demand for grapefruit juice but also for grapefruit-juice cocktail.
Tipo: Report Palavras-chave: Advertising; Demand; Grapefruit juice; Cocktail; Scanner data; Agribusiness; Consumer/Household Economics; Demand and Price Analysis.
Ano: 1990 URL: http://purl.umn.edu/52710
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Advertising impacts on demand for orange juice, January 2002 AgEcon
Brown, Mark G..
Both a single equation model and Rotterdam demand system were used to estimate the impact of advertising on OJ demand. In the single equation model, OJ gallon sales were related to OJ advertising, grapefruit juice advertising, the price of OJ, seasonality variables, consumer income, and a dummy variable for September 11 to further capture possible effect resulting from changes in the U.S. economy and consumer confidence after that point in time. The impact of each of these variables was estimated by applying the ordinary least squares regression method to data from September 1997 to November 2001. The results suggest that recent decreases in OJ demand are related to declines in FDOC advertising, as well as perhaps declines in incomes and changes in...
Tipo: Report Palavras-chave: Generic advertising; 9-11; Rotterdam demand system; Agribusiness; Demand and Price Analysis.
Ano: 2002 URL: http://purl.umn.edu/52889
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Advertising impacts on demand for orange juice -- May 2003 AgEcon
Brown, Mark G..
Tipo: Report Palavras-chave: Generic advertising; Orange juice; Demand; Lagged advertising effect; Agribusiness; Demand and Price Analysis.
Ano: 2003 URL: http://purl.umn.edu/52893
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AIDS and separability: a non sequitur AgEcon
Lee, Jonq-Ying; Brown, Mark G.; Seale, James L., Jr..
The almost ideal demand system (AIDS) is commonly used to study demand for agricultural commodities and groups of commodities. Increasingly, separability has been utilized in conjunction with the AIDS to estimate conditional demand systems as well as to improve upon precision of parameter estimates. The paper shows that separability conditions are inconsistent with use of the AIDS and that tests of separability with the AIDS are problematic.
Tipo: Report Palavras-chave: AIDS; Separability; Demand and Price Analysis.
Ano: 1992 URL: http://purl.umn.edu/52879
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Allocation of Advertising and Research Dollars In the Florida Orange-Juice Industry AgEcon
Brown, Mark G..
In this study, an OJ model was developed to examine the optimal advertising-research mix to maximize Florida grower revenue net of the costs of these activities. The model is based on assumed coefficients reflecting the impacts of prices, advertising and research. The effects of prices on demand and supply, as well as the effect of advertising on demand, were set based on findings of prior studies. The effect of research on supply is less certain, and a range of research effects was considered. A range of advertising effects was also considered given the study’s focus. The model solutions for the various advertising and research assumptions considered indicate that optimal advertising expenditures are significant
Tipo: Report Palavras-chave: Agribusiness.
Ano: 2009 URL: http://purl.umn.edu/104329
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Allocation of Advertising and Research Dollars In the Florida Orange-Juice Industry: Supply and Demand Elasticity Considerations AgEcon
Brown, Mark G..
This study shows how the mix of advertising and research that maximizes net revenue for a commodity can be approximated for given values of market prices, margins and quantities, along with price elasticities of supply and demand, and the elasticity of demand with respect to advertising and the elasticity of supply and the price margin with respect to research.
Tipo: Preprint Palavras-chave: Advertising dollars; Allocation; Orange juice industry; Agribusiness.
Ano: 2008 URL: http://purl.umn.edu/104325
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Allocation of shelf space: a case study of refrigerated juice products in grocery stores AgEcon
Brown, Mark G.; Lee, Jonq-Ying.
Tipo: Report Palavras-chave: Shelf space allocation; Refrigerated juices; Grocery stores; Agribusiness; Demand and Price Analysis.
Ano: 1994 URL: http://purl.umn.edu/52741
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Allocation of shelf space: some theoretical considerations AgEcon
Brown, Mark G..
Tipo: Report Palavras-chave: Shelf space allocation; Agribusiness; Demand and Price Analysis.
Ano: 1994 URL: http://purl.umn.edu/52744
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Alternative specifications of advertising in the Rotterdam model AgEcon
Brown, Mark G.; Lee, Jonq-Ying.
This paper examines several approaches to introduce advertising in systems of demand equations. Advertising is included in the Rotterdam model using an unrestricted specification and three restricted specifications - advertising affects demand alternatively through (1) marginal utilities as in studies by Duffy (1987, 1989, 1990) and Selvanathan (1989), (2) scaling parameters which can be viewed as indicators of product quality, and (3) translation parameters which can be viewed as indicators of basic needs. A test to choose among the alternative specifications is provided and the methodology is applied to data on demand for fruit juice products.
Tipo: Report Palavras-chave: Advertising; Rotterdam model; Scaling; Translation; Demand and Price Analysis.
Ano: 1991 URL: http://purl.umn.edu/52717
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An Analysis of Wal-Mart Refrigerated Orange Juice Sales AgEcon
Brown, Mark G..
In this paper, estimates of the impacts of various factors on the refrigerated OJ sales in Wal-Mart (WM) stores are presented. Data on WM stores, as well as grocery stores doing $2 million or greater annual business, across 52 Nielsen city markets (including the remaining U.S.) were studied. Since WM does not have stores in San Diego, this market was omitted. Weekly data for each city from week ending 3/11/06 through 3/01/08 (104 weeks) were included in the analysis. The relationship between WM refrigerated OJ dollar sales per store and 1) WM and $2million store prices, $2 million store promotions, a dummy variable to test whether sales may spike during periods when some consumers receive their paychecks (middle or end of the month), the number of same...
Tipo: Report Palavras-chave: Demand; Orange juice; Wal-Mart; Agribusiness.
Ano: 2008 URL: http://purl.umn.edu/104322
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An Engel Curve Analysis of Household Expenditure in Taiwan: 1996-98 AgEcon
Chung, Rebecca H.; Lee, Jonq-Ying; Brown, Mark G..
Seven systems of Engel curves for expenditures on ten commodity groups were estimated using Taiwanese household expenditure data for the period from 1996 through 1998. Results show that the estimated expenditure elasticities are insensitive to the choice of functional forms.
Tipo: Conference Paper or Presentation Palavras-chave: Engel curve; Taiwan; Consumer/Household Economics.
Ano: 2002 URL: http://purl.umn.edu/53388
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An Index to Measure Health Status AgEcon
Lee, Jonq-Ying; Rampersaud, Gail S.; Brown, Mark G..
In this study we developed a health status index using the commonly recorded health measures by doctors and hospitals. This health status index has a minimum possible value of 7 (the least healthy) and a maximum value of 21 (the healthiest). Using the NHANES data, we explored the relationship of this health status index and nutrient intakes, lifestyle, and demographics of the respondent. Regression results showed that as the age of the respondent, being non-Hispanic black, participants of food stamp programs, high percent of calories that came from fat intakes, high percent of calories in beverages that came from soft drinks, smoking, and on special diets are negatively related to the value of the health status index (i.e., the person became less...
Tipo: Report Palavras-chave: Health index; HNANES; Nutrients; Food Consumption/Nutrition/Food Safety.
Ano: 2008 URL: http://purl.umn.edu/36819
Registros recuperados: 102
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