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Wyszukujesz frazę "Stochastic Frontier" wg kryterium: Temat


Tytuł:
Estimation of Losses Due to the Existence of Monopolies in Urban Bus Transport in Poland
Autorzy:
Wolański, Michał
Powiązania:
https://bibliotekanauki.pl/articles/529913.pdf
Data publikacji:
2011-11-30
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
public transport
demonopolisation
Stochastic Frontier Analysis
Opis:
The aim of this paper is to present the different approaches to demonopolisation used in Polish and European urban public transport, compare the efficiency of these models which have proven popular in Poland as well as to estimate the total losses incurred due to the high monopolisation of Polish public transport. The methodology of the research is based on econometric modelling (Stochastic Frontier Analysis) and on a survey conducted by the author among Public Transport Authorities. The author proves that the modern London model (competition for the market) is more efficient in Polish conditions than the classic German one (communal monopoly). The very popular in Poland combination of the two above formulas – the co-existence of a Public Transport Authority with a monopolistic publicly owned operator – is surprisingly the least efficient. Total losses due to the existence of monopolies in Polish urban bus transport are estimated for the year 2007 at the level of 10-14% of its total budget (ca. 117-149 m EURO/year). In some cities, the losses can be as high as 20-25% of the total remuneration to the public bus operator. In others, public monopolists can be as efficient as private operators in the competitive model.
Le but de cet article est de présenter les approches différentes vers la demonopolisation du transport en commun urbain polonais et européen, comparer l’efficacité de ces modèles, populaires en Pologne, aussi qu’estimer les pertes totales résultant de la monopolisation du transport en commun en Pologne. La méthode de l’analyse est fondée sur la modélisation économétrique (Stochastic Frontier Analysis) et sur l’enquête réalisée par l’auteur parmi les autorités responsable de transport. L’auteur prouve que le modèle moderne de Londres (concurrence pour le marche) est plus efficace dans les conditions polonaises que le modèle allemand (monopole communal). La combinaison de deux modèles, très populaire en Pologne, reposant sur la coexistence d’une autorité responsable de transport avec un opérateur publique, est une solution la moindre efficace.
Źródło:
Yearbook of Antitrust and Regulatory Studies; 2011, 4(5); 133-156
1689-9024
2545-0115
Pojawia się w:
Yearbook of Antitrust and Regulatory Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economics of Environmental Pollution on Cassava-Based Farmers’ Health and Production Efficiency within Lafarge Cement Concession Area in Mfamosing, Cross River State, Nigeria
Autorzy:
Edet, E. O.
Udoe, P. O.
Isong, I. A.
Abiam, N. E.
Powiązania:
https://bibliotekanauki.pl/articles/1077276.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cement Pollution
Lafarge
Mfamosing
Stochastic Frontier
cassava-based farmers
Opis:
The paper undertakes an assessment of the economics of environmental pollution on cassava-based farmers’ health and production efficiency within the Lafarge cement concession area in Mfamosing, Akamkpa Local Government Area, Cross River State. Data for the study were sourced from 60 cassava-based farmers drawn from neighbourhood and non-neighbourhood locations and analyzed using descriptive statistics and stochastic production frontier techniques. The result showed that farming activities in the area have been dominated by females with an average age of 43 and 35 years of age and household size between 4 and 6 persons. Clearly, the results indicate that cement plant activities have reduced farm productivity over the last 5 years, and has affected the livelihood of the farmers. The study also averred that respiratory diseases, diarrhea, skin rashes, heart disease, asthma, coughs and skin cancer have been the various health challenges suffered by the farmers. According to the study results, farmers lost 44 days due to heart disease, 33 days due to respiratory diseases, and 7 days due to diarrhea. The result of the maximum likelihood estimates (MLEs) of the stochastic frontier production function indicate that hired labour, quantity of fertilizer used and quantity of cassava stem cuttings were the significant variables that influenced cassava yield. The estimated technical efficiency (TE) ranged from 0.45 - 0.99, with a mean index of 0.67 (target group) and 0.57 – 0.99, with a mean of 0.82 (control group). The number of days lost due to illness was the most significant variable influencing inefficiency levels in the study area. It was, therefore, recommended that policies aimed at increasing efficiency should focus on improving health care services in the farming communities, while encouraging efficient level of pollution control by the prescribed cement factory, ab initio.
Źródło:
World News of Natural Sciences; 2019, 23; 182-199
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of CAP Subsidies on the Technical Efficiency of Polish Dairy Farms
Autorzy:
Marzec, Jerzy
Pisulewski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2076428.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stochastic frontier analysis
dairy farms
Bayesian approach
panel data
Opis:
The main aim of this paper is to analyse the effect of Common Agricultural Policy (CAP) subsidies on technical efficiency of Polish dairy farms. We have distinguished several types of subsidies and provided an analysis to find out which types are most likely to engender systematic differences in technical efficiency. A balanced panel of microeconomic data on Polish dairy farms over an eight-year period (between 2004 and 2011), taken from the Farm Accountancy Data Network (FADN), is used. The translog production function is estimated by employing the Bayesian approach. The empirical results show that the elasticity of production with respect to livestock is the highest, whereas with respect to feed is the lowest. The mean technical efficiency in the covered period is 83%. The research reveals the negative effect of subsidies on technical efficiency.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2017, 3; 243-273
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of cost efficiency in tomato greenhouses: the case of seven agrobussines in México, 2016
Autorzy:
Arvizu Armenta, Marisol
Powiązania:
https://bibliotekanauki.pl/articles/14468728.pdf
Data publikacji:
2018-09-27
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
Stochastic Frontier Model
Efficiency in Costs
tomato´s Greenhouses
Opis:
Aim: The main objective of this research was to evaluate the efficiency of economic costs in seven units of greenhouse tomato production, during the production cycles of 2016, through the application of the stochastic frontier, depending on the type of packaging they handle and the cost structure that governs them.   Design / Research methods: The stochastic frontier model includes the analysis of the non-systematic random component, which assumes an extremely critical role in the analysis during the interpretations. With the calculation of the stochastic cost frontier we construct the cost inefficiency index represented by C_it, delimited below 0. The index shows the percentage in which the cost is exceeded and, therefore, the degree of inefficiency.   Conclusions / findings: The elaboration of the stochastic frontier finds its justification in the argument that the less efficient competitor is the one that receives the greater effects of the competition. In this sense, the location of the companies analyzed with respect to their own line of efficiency is essential for the design of the strategies of each company. The production units analyzed showed that, on some occasions, externalities are the cause of inefficiency, but contrary to what is established in theory, there are some units that show that the inefficiency with which they count is diminished by The influence of uncontrolled variables.  Originality / value of the article: The contribution of this research lies in the use of efficiency models in the primary sector, specifically in tomato´s greenhouses.
Źródło:
Central European Review of Economics and Management; 2018, 2, 3; 101-124
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastic frontier analysis of regional competitiveness
Autorzy:
Furková, Andrea
Surmanová, Kvetoslava
Powiązania:
https://bibliotekanauki.pl/articles/453463.pdf
Data publikacji:
2011
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
Stochastic Frontier Analysis
Technical Efficiency
NUTS2 regions
Competitiveness
Opis:
The regional competitiveness is the source of national competitiveness and the efficiency measuring and relative regional efficiency comparison are crucial questions for analysts as well as for economic policy creators. Regional competitiveness becomes a subject of evaluation due to increasing significance of regions in concept of European Union. This paper deals with the application of parametric benchmarking method – Stochastic Frontier Analysis (SFA) for measuring technical efficiency of NUTS2 regions of V4 countries within the time period of 8 years.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2011, 12, 1; 67-76
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forma prawna zakładu ubezpieczeń majątkowych a jego efektywność
Legal form of the property insurance company and its efficiency
Autorzy:
Kozak, Sylwester
Powiązania:
https://bibliotekanauki.pl/articles/588366.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Efektywność
Stochastic Frontier Analysis
Ubezpieczenia majątkowe
Efficiency
Non-life insurance
Opis:
Celem badania jest rozpoznanie, jakie znaczenie dla efektywności zakładów ubezpieczeń majątkowych ma ich forma prawna. Analizą objęto 29 zakładów działających w Polsce w latach 2002-2017, w tym 21 spółek akcyjnych i 8 towarzystw ubezpieczeń wzajemnych (TUW). Efektywność oszacowano parametryczną metodą SFA. Badania wykazały, że zakłady funkcjonujące w formie spółek akcyjnych były w całym analizowanym okresie efektywniejsze niż TUW, średnio 51,2% versus 42,5%, przy czym różnica ta miała tendencję spadkową. Na efektywność obu rodzajów zakładów pozytywnie wpływał wzrost ich rozmiarów działania, mierzonego aktywami i składką przypisaną brutto. Oba rodzaje zakładów poprawiały swą efektywność w środowisku niskiej inflacji i niskiej dynamiki wzrostu PKB, a także wyższej konkurencji w sektorze. Redukcja kosztów działania w relacji do pozyskiwanej składki miała dodatni wpływ na efektywność spółek akcyjnych.
The goal of the study is to recognize the impact of the legal form of the property insurance company on its efficiency. The analysis covered 29 firms operating in Poland in 2002-2017, including 21 joint-stock companies and 8 mutual insurance companies (TUW). Efficiency was estimated using the parametric SFA method. The study has shown that over the entire analyzed period firms operating in the form of joint-stock companies were more effective than TUW, an average of 51.2% versus 42.5%. The effectiveness of both types of firms was positively influenced by the increase in their size, as measured by the gross written premium and assets. Both types of firms improved their efficiency in the environment of low inflation rate and low GDP growth rate as well as higher competition in the sector. The reduction of operating costs in relation to the collected premium had a positive impact on the efficiency of joint-stock companies.
Źródło:
Studia Ekonomiczne; 2019, 387; 68-85
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of information communication technology (ICT) and mass media usage on technical efficiency of fish farming in Ogun State, Nigeria
Autorzy:
Oke, Folasade Olukemi
Olorunsogo, Gaius
Akerele, Dare
Powiązania:
https://bibliotekanauki.pl/articles/1879444.pdf
Data publikacji:
2021-07-04
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
fish farming
information communication technology
stochastic frontier analysis
technical efficiency
Opis:
The role of information in agricultural development cannot be overemphasized, as information is vital in increasing production, improving marketing and enhancing distribution strategies. Therefore, the study examined the impact of information communication technologies on the technical efficiency of fish farming in Ogun State, Nigeria using a stochastic production frontier approach. In a cross-sectional survey, a multi-stage sampling technique was employed to elicit primary information from 120 fish farmers. Major ICT sources used by the fish farmers include television (81.7%), radio (79.2%) and the Internet (68.3%). The average output of catfish has positive and significant elasticity with regards to each input variable except family labour. The inefficiency model revealed that the age of farmers, farming experience, television and radio usage were significant but negatively related. That means that any increase in any of these factors will reduce the inefficiency of fish farmers and bring about an increase in technical efficiency. This implies that it is possible to increase technical efficiency in fish farming in the study area provided that the media channel (radio and television) predominantly used is improved. This study recommends a reduction in family labour usage while at the same time encouraging young people to venture into fish farming.
Źródło:
Journal of Agribusiness and Rural Development; 2021, 60, 2; 143-150
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bayesian Stochastic Frontier Analysis of Economic Growth and Productivity Change in the EU, USA, Japan and Switzerland
Autorzy:
Makieła, Kamil
Powiązania:
https://bibliotekanauki.pl/articles/2076602.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stochastic frontier analysis
Bayesian inference
productivity analysis
economic growth decomposition
Opis:
The paper discusses Bayesian productivity analysis of 27 EU Member States, USA, Japan and Switzerland. Bayesian Stochastic Frontier Analysis and a twostage structural decomposition of output growth are used to trace sources of output growth. This allows us to separate the impacts of capital accumulation, labour growth, technical progress and technical efficiency change on economic development. Since estimates of the growth components are conditioned upon model parameterisation and the underlying assumptions, a number of possible specifications are considered. The best model for decomposing output growth is chosen based on the highest marginal data density, which is calculated using adjusted harmonic mean estimator
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2014, 3; 193-216
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TECHNICAL EFFICIENCY MEASUREMENT OF DAIRY FARMS IN POLAND: AN APPLICATION OF BAYESIAN VED MODEL
Autorzy:
Marzec, Jerzy
Pisulewski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/453896.pdf
Data publikacji:
2013
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
stochastic frontier models
Bayesian VED model
technical efficiency
dairy farms
Opis:
The purpose of this paper is to measure the technical efficiency of Polish dairy farms using a Bayesian Varying Efficiency Distribution (VED) model. In particular, the paper presents the design and assumptions of frontier stochastic production function for panel data. Furthermore, it specifies the microeconomic production function based on panel data, derived from the Polish FADN (Farm Accountancy Data Network). The main part of the paper presents key findings which form the basis of understanding the technological characteristics and average efficiency of Polish dairy farms. Moreover, the exogenous variables affecting the level of average farm efficiency are identified. They are the source of significant differences in levels of efficiency of dairy farmers surveyed.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2013, 14, 2; 78-88
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure of technical efficiency of insurers in the life insurance industry in Poland
Autorzy:
Ortyński, Kazimierz
Wołoszyn, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/16729747.pdf
Data publikacji:
2022
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
life insurance market
cost efficiency
profit efficiency
stochastic frontier analysis
Opis:
The primary objective of the article was to examine the level and efficiency structure of insurance companies on life insurance market  in Poland. The study presents critical analysis of the insurance literature relating to technical efficiency of insurers, i.e. methods of estimating efficiency, the form of the efficiency  frontier  model, the choice of production factors and insurance production. The study used the methods of mathematical and econometric modelling in SFA  method. The results the technical efficiency study for 22 life insurance companies for a period between 2011-2020 using the SFA method, showed high average cost efficiency of insurers (0.9140) and lower profit efficiency (0. 8565). It was confirmed that a group of large companies achieved higher cost efficiency than the remaining companies, suggesting that large companies benefited from the scale of production.  In contrast, higher average profit efficiency was recorded for the remaining companies.
Źródło:
Central European Review of Economics & Finance; 2022, 39, 4; 24-38
2082-8500
2083-4314
Pojawia się w:
Central European Review of Economics & Finance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Textile Industry Efficiency in Eastern European Countries
Autorzy:
Ova, Alper
Powiązania:
https://bibliotekanauki.pl/articles/24200957.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
efficiency
textile company
Eastern Europe
Stochastic Frontier Analysis
company size
Opis:
In the global world where competition is increasing constantly, efficient use of resources is becoming more important for the textile industry. In this study, the efficiency scores and inefficiency effects of the textile industry in selected Eastern European countries were investigated using stochastic frontier analysis. The results indicate that age has a negative impact on inefficiency in the Czech Republic and Hungary. The current ratio decreases the inefficiency in Slovakia, Poland and Hungary, while time decreases that in Slovakia, the Czech Republic and Hungary.
Źródło:
Fibres & Textiles in Eastern Europe; 2023, 31, 2; 92--96
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Copula-based Stochastic Frontier Model with Autocorrelated Inefficiency
Autorzy:
Das, Arabinda
Powiązania:
https://bibliotekanauki.pl/articles/2076544.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stochastic frontier model
copula function
simulated maximum likelihood
Monte Carlo simulation
Opis:
The paper considers the modeling and estimation of the stochastic frontier model where the error components are assumed to be correlated and the inefficiency error is assumed to be autocorrelated. The multivariate FarlieGumble-Morgenstern (FGM) and normal copula are used to capture both the contemporaneous and the temporal dependence between, and among, the noise and the inefficiency components. The intractable multiple integrals that appear in the likelihood function of the model are evaluated using the Halton sequence based Monte Carlo (MC) simulation technique. The consistency and the asymptotic efficiency of the resulting simulated maximum likelihood (SML) estimators of the present model parameters are established. Finally, the application of model using the SML method to the real life US airline data shows significant noise-inefficiency dependence and temporal dependence of inefficiency.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2015, 2; 111-126
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
COMPARISON OF THE DETERMINISTIC AND STOCHASTIC APPROACHES FOR ESTIMATING TECHNICAL EFFICIENCY ON THE EXAMPLE OF NON-PARAMETRIC DEA AND PARAMETRIC SFA METHODS
Autorzy:
Bezat, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/453190.pdf
Data publikacji:
2009
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
"efficiency measuring
Stochastic Frontier Approach
Data Envelopment Analysis
Decision Making Units "
Opis:
The author considers in the article estimation of the technical efficiency, which measures the ability of the company to obtain the maximum output from given inputs or to use the minimum input to achieve given outputs. The comparison of two approaches: deterministic (on the example of Data Envelopment Analysis) and stochastic (on the example of Stochastic Frontier Approach) has been carried out, the advantages and disadvantages of both were also described. These methods were chosen because they have become popular in polish research. In the article the possible limitations and problems, which may influence results of studies conducted by using these methods, were considered.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2009, 10, 1; 20-29
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technical efficiency of maize-based farm irrigators in the Eastern Cape province
Autorzy:
Mdoda, Lelethu
Obi, Ajuruchukwu
Christian, Mzuyanda
Jiba, Phiwe
Powiązania:
https://bibliotekanauki.pl/articles/2033372.pdf
Data publikacji:
2021-12-28
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
Eastern Cape Province
smallholder maize-based farmers
stochastic frontier analysis
technical efficiency
Opis:
Maize production is the most important field crop in South Africa produced from ancient years, Mpumalanga and North West Provinces being principal producers. Maize is extensively produced and ascendancy ground crop because maize is greater resilient, less labor exhaustive, rich in food strength and starches, grows actual fast, and easy to produce as other ground crops. Most of the produced maize in South African is consumed domestically. Despite massive extents of arable land and all-inclusive land reform implemented for 25 years, farmers in the former homeland areas of South Africa cultivate only small food plots where they grow mostly maize and a small variety of vegetables. The aim of this paper was to examine the technical efficiency of maize-based farmers who farm within smallholder irrigation schemes. A multi-stage sampling procedure was used to select 120 maize-based irrigation farmers. Descriptive statistics and stochastic production frontier models were used in the study. Maize production in the study area was dominated by males (78%) with an average age of 60 years and an average family size of 4 people in the household.  Smallholder irrigators have primary education meaning farmers were literate and able to access farming information and interpret it. Farmers have a minimum average of 10 years of farming experience. Smallholder maize-based farmers were efficient in using their resources given their high farm productivity. The level of technical efficiency for maize farming was 84% which indicates that 16% of maize yield was not realized by smallholder maize farmers in the study area. The study recommends that the government and private sector must improve the farm techniques such as manure and enhanced seeds prepared early and accessible at small and affordable expenses to upsurge maize productivity.
Źródło:
Journal of Agribusiness and Rural Development; 2021, 62, 4; 371-381
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastyczna analiza graniczna : przegląd zastosowań
Stochastic Frontier Analysis : the areas of applications
Autorzy:
Wardzińska, K.
Powiązania:
https://bibliotekanauki.pl/articles/398899.pdf
Data publikacji:
2012
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
stochastyczna analiza graniczna
stochastyczna analiza graniczna (SFA)
analiza obwiedni danych (DEA)
efektywność techniczna
efektywność kosztowa
stochastic frontier analysis
SFA (Stochastic Frontier Analysis)
DEA (Data Envelopment Analysis)
technical efficiency
cost efficiency
Opis:
The purpose of this article is one of the benchmarking methods - SFA (Stochastic Frontier Analysis) and overview of the areas of applications. This article discussed the idea of the method and the basis of economics. The literature review of previous achievements on the areas of application was researched. SFA is compared to most popular DEA method (Data Envelopment Analysis). The interest method over the last decade and the industries that are the subject of analysis is presented. The summary contains the conclusions of the analysis.
Źródło:
Ekonomia i Zarządzanie; 2012, 4, 4; 123-134
2080-9646
Pojawia się w:
Ekonomia i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł

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