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Wyświetlanie 1-5 z 5
Tytuł:
Bicriteria Optimization in the Newsvendor Problem with Exponentially Distributed Demand
Autorzy:
Bieniek, Milena
Powiązania:
https://bibliotekanauki.pl/articles/578568.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Bicriteria optimization
Newsvendor problem
Stochastic process
Optymalizacja dwukryterialna
Proces stochastyczny
Zagadnienie gazeciarza
Opis:
In this paper exponential distribution is implemented as a demand distribution in newsvendor model with two different and conflicting goals. The first goal is the standard objective of maximization of the expected profit. The second one is to maximize the probability of exceeding the expected profit, called survival probability. Using exponential distribution as the demand distribution allows us to obtain the exact solutions. Also for this distribution we can study the monotonicity of survival probability with respect to various model parameters analytically. Additional results are obtained when various sets of the parameters are considered. Finally, the bicriteria index which combines these conflicting objectives is optimized which gives the compromise solution. Moreover, in order to illustrate theoretical results, we present numerical examples and graphs of auxiliary functions.
Źródło:
Multiple Criteria Decision Making; 2016, 11; 20-35
2084-1531
Pojawia się w:
Multiple Criteria Decision Making
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Goal Setting in the Newsvendor Problem with Uniformly Distributed Demand
Autorzy:
Bieniek, Milena
Powiązania:
https://bibliotekanauki.pl/articles/578526.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Kontrola stanu zapasów
Zagadnienie gazeciarza
Inventory control
Newsvendor problem
Opis:
In the paper we introduce the newsvendor problem with a satisficing-level objective, which is defined as maximization of the probability of exceeding the moving target. This target is defined as the expected profit, multiplied by a positive constant. The constant is chosen by the management and it indicates whether the low or the high goal should be achieved. We obtain closed form solutions of this newsvendor model with uniformly distributed demand. Additionally, we consider a bicriteria problem with the satisficing- -level and the classical objective.
Źródło:
Multiple Criteria Decision Making; 2018, 13; 91-102
2084-1531
Pojawia się w:
Multiple Criteria Decision Making
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bicriteria Optimization in the Risk-Adjusted Newsvendor Problem
Autorzy:
Bieniek, Milena
Powiązania:
https://bibliotekanauki.pl/articles/578584.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Bicriteria optimization
Newsvendor problem
Risk
Optymalizacja dwukryterialna
Ryzyko
Zagadnienie gazeciarza
Opis:
In this paper, we study the newsvendor problem with various degrees of risk tolerance. We consider bicriteria optimization where the first objective is the classical maximization of the expected profit and the second one is the satisficing-level objective. The results depend on the risk coefficient and are different for a risk-neutral, a risk-averse, and a risk-seeking retailer. We find the compromise solution of the bicriteria newsvendor problem numerically, since the two objectives are mutually conflicting. The formulas obtained are illustrated with exponentially distributed demand.
Źródło:
Multiple Criteria Decision Making; 2017, 12; 9-21
2084-1531
Pojawia się w:
Multiple Criteria Decision Making
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Barter exchange as the way to deal with excess inventory: newsvendor problem with multiplicative demand
Autorzy:
Bieniek, Milena
Powiązania:
https://bibliotekanauki.pl/articles/2175847.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
barter exchange
inventory
newsvendor
pricing
multiplicative demand
Opis:
Barter exchange has been growing in popularity during the coronavirus pandemic. This article considers bartering introduced to the newsvendor model with multiplicative demand. The objective of the model is to specify the order quantity and retail price to maximize the expected profit. We distinguish cases with the co-movement of prices of exchanged products and without it. In the first case, we calculate a precise optimal solution to the problem. In the latter case, we prove the existence of an optimal solution and give the conditions under which it is unique. We examine the sensitivity analysis of the results which is illustrated in numerical examples. The analysis revealed that the greater the commission, the lower the optimal profit. We make a conclusion that barter exchange can help the retailer to improve the profit.
Źródło:
Operations Research and Decisions; 2022, 32, 3; 49--64
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Meeting the European green deal objective of expanding organic farming
Autorzy:
Kowalska, Aleksandra
Bieniek, Milena
Powiązania:
https://bibliotekanauki.pl/articles/22443144.pdf
Data publikacji:
2022
Wydawca:
Instytut Badań Gospodarczych
Tematy:
European Green Deal
green growth
organic farming
sustainable food system
Green Public Procurement
Opis:
Research background: Economic growth is unsustainable. However, a circular economy has the potential to lead to sustainable development, while decoupling economic growth from the negative consequences of resource depletion and environmental degradation. The EU's strategy of climate neutralization in 2050 developed, inter alia, into a European Green Deal action plan aiming at the efficient use of resources by moving to a cleaner, circular economy. More sustainable EU food system is a cornerstone of the European Green Deal. The European Commission's goal is 25% of agricultural land to be used for organic production in 2030. The question is if it is possible to reach the objective with the use of current incentives. What else may be done to encourage European farmers to convert to organic farming? Purpose of the article: The aim of this research is to review the development of organic agriculture in Europe and the EU and to identify incentives for farmers to convert to organic farming. Methods: First of all, the methodological approach is to iteratively review the existing literature to frame the problem. Secondly, the data on organic agriculture in Europe is to be analyzed to answer the research questions. The analysis is based on international statistics, mainly collected by FiBL, IFOAM, EC Agri-food data portal and Eurostat..Fitting the trend functions to the actual data has been made in three scenarios (pessimistic, realistic and optimistic). These trend functions were used for the long-term forecasts of the share of organic farmland in the EU. Findings & value added: The long-run forecast might be treated as a goal, which can motivate to act more intensively to achieve the objective. The existing measures, including organic farming payments, are not sufficient to meet the goal of massive increase in the acreage under organic production. It is necessary to develop new incentives e.g. Green Public Procurement, innovative and effective media campaigns, development of a dynamic network of actors within the organic food supply chain with the use of blockchain technology.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2022, 17, 3; 607-633
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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