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Computer Science, Artificial Intelligence
Monireh Jahani Sayyad Noveiri, Sohrab Kordrostami
Summary: Assessing the impact of sustainable indicators on each other or comprehensively evaluating all metrics while maintaining sustainability performance is crucial for decision-makers.
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Energy & Fuels
Mohadeseh Shabani, Sohrab Kordrostami, Monireh Jahani Sayyad Noveiri
Summary: This study evaluates the performance of renewable energy for 34 OECD member countries using the Fuzzy Dynamic Directional Distance Function model. The results show that this approach has a strong capability to discriminate the performance of renewable energy.
Article
Environmental Sciences
Murnira Othman, Mohd Talib Latif, Nor Diana Abdul Halim
Summary: Air pollutants have a significant impact on humans and the environment. This study analyzed the influence of air pollutant concentrations on the environmental performance of 15 states in Malaysia and found that air pollutants play a crucial role in achieving good environmental performance.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Management
Hirofumi Fukuyama, Roman Matousek, Nickolaos G. Tzeremes
Summary: This study examines the bank production process with nonperforming loans in Japanese banking. The research finds significant inefficiencies in Japanese banking, mainly attributed to the hard-to-achieve targets set by the standard directional slack inefficiency model. The proposed minimum distance directional slack inefficiency estimator provides practical targets for bank managers. The empirical evidence suggests that high investment and strategic efficiency are key factors behind Japanese banks' performance.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2022)
Article
Computer Science, Artificial Intelligence
Robabeh Eslami, Mohammad Khoveyni
Summary: This study introduces a novel enhanced Russell graph (ERG) efficiency measure for evaluating the efficiency score of multi-stage decision-making units (DMUs). The proposed model is extended to general multi-stage series network structures. Two numerical and empirical examples are provided to illustrate the use of the proposed model and the managerial and economic implications of measuring the efficiency score of multi-stage DMUs.
INTERNATIONAL JOURNAL OF INFORMATION TECHNOLOGY & DECISION MAKING
(2022)
Article
Management
Chunguang Quan, Shasha Yu, Xiaojuan Cheng, Feiyue Liu
Summary: Corporate social responsibility (CSR) has become an important factor for enterprises to improve their core competitiveness. This study examines the input-output efficiency of CSR in Chinese listed logistics enterprises and finds that while there has been improvement, there is still a need for adjustment and improvement based on actual circumstances.
OPERATIONS MANAGEMENT RESEARCH
(2022)
Article
Environmental Sciences
Muhammad Shoaib Aslam, Pan Huan Xue, Shahid Bashir, Yazeed Alfakhri, Mohammad Nurunnabi, Van Chien Nguyen
Summary: The study analyzes rice and wheat production efficiency in Pakistan, India, and China, finding that wheat production has the highest efficiency through the CCR approach. The SBM model shows lower technical productivity ratings. Overall, there is room for improvement in resource utilization and energy conservation to enhance crop production efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Construction & Building Technology
Maria Molinos-Senante, Alexandros Maziotis, Manuel Mocholi-Arce, Ramon Sala-Garrido
Summary: This study provides a quantification of the energy costs and GHG emissions efficiency of English and Welsh water companies, revealing their low efficiency and potential for savings. It identifies environmental variables influencing performance and emphasizes the importance of implementing policies and measures for a low-carbon urban water cycle.
SUSTAINABLE CITIES AND SOCIETY
(2022)
Article
Green & Sustainable Science & Technology
Ethel Ansaah Addae, Dongying Sun, Olivier Joseph Abban
Summary: This study examined the pattern of water use efficiency and its potential relationship with urbanization and foreign direct investment between 2007 and 2016 in 11 West African countries. The results showed that Benin, Burkina Faso, Liberia, Mauritania, and Togo achieved high efficiency in water use, while the other countries had lower efficiency. Economic growth had a negative impact on water use efficiency in West Africa as a whole. Urbanization, foreign direct investment, export, industrial activities, and literacy rate all had significant effects on water use efficiency in different panels.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Health Policy & Services
Shuguang Lin, Paul Rouse, Ying-Ming Wang, Lin Lin, Zhen-Quan Zheng
Summary: Cook et al. (2013) propose a DEA-based model for performance evaluation of non-homogeneous DMUs under both CRS and VRS, extended by Li et al. (2019) to VRS. This paper applies these models to Hong Kong hospitals, dividing the production process into subunits with the same inputs and outputs. The CRS and VRS versions of DDF models produce similar results to previous studies, with differences found in the statistical tests due to different technologies assumed.
HEALTH CARE MANAGEMENT SCIENCE
(2023)
Article
Management
Hirofumi Fukuyama, Roman Matousek, Nickolaos G. Tzeremes
Summary: This paper proposes a minimum distance Data Envelopment Analysis (DEA) model to evaluate the efficiency of the Japanese banking sector, showing significant differences compared to traditional methods due to variations in benchmark target setting approaches.
JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY
(2022)
Article
Business
Yuan Xu, Yong Shin Park, Ju Dong Park, Wonjoo Cho
Summary: This study applied a DEA model to measure the environmental efficiency of 12 U.S. airlines, finding that flight delay significantly affects environmental efficiency and that factors such as fleet age, ownership type, freight traffic, market share, and carrier type significantly influence airline performance.
JOURNAL OF MANAGEMENT ANALYTICS
(2021)
Article
Thermodynamics
Qiang Cui, Amir Arjomandi
Summary: This study proposes a method to enhance the accuracy of the conventional RAM model for studying airline energy efficiency. Results show that Scandinavian Airlines is the most efficient, but there is still room for improvement in its service efficiency.
Article
Environmental Sciences
Xuping Zhang, Xiang Chen, Ching-Cheng Lu, Fu-Yueh Cheng
Summary: This study reexamines the GTFP using a slack-based directional distance function combined with the Malmquist-Luenberger Productivity Index, finding a downward trend of productivity growth in Chinese provinces, partly due to no significant improvement in technical change. There is a significant difference in efficiency change between the slack-based measure and the original DDF measure.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Management
Michael Vardanyan, Vivian G. Valdmanis, Herve Leleu, Gary D. Ferrier
Summary: The use of directional distance function (DDF) has increased in empirical studies, particularly in health economics for modeling hospital technology. The choice of direction in modeling with DDF is a crucial issue. This study proposes an approach to address the choice of direction and applies it to U.S. hospitals. The findings show that publicly owned non-teaching hospitals face substantial opportunity costs in inpatient care, while urban-area teaching hospitals have a higher substitution rate for nurses compared to public non-teaching hospitals and rural-area hospitals.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2022)
Article
Management
Juan Aparicio, Jesus T. Pastor, Jose L. Zofio
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2017)
Article
Management
Juan Aparicio, Lidia Ortiz, Jesus T. Pastor
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2017)
Article
Computer Science, Information Systems
Juan Aparicio, Magdalena Kapelko, Lidia Ortiz, Jesus T. Pastor
Article
Environmental Sciences
Juan Aparicio, Javier Barbero, Magdalena Kapelko, Jesus T. Pastor, Jose L. Zofio
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2017)
Article
Management
Juan Aparicio, Eva M. Garcia-Nove, Magdalena Kapelko, Jesus T. Pastor
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2017)
Article
Operations Research & Management Science
Juan Aparicio, Jesus T. Pastor, Jose L. Sainz-Pardo, Fernando Vidal
OPERATIONAL RESEARCH
(2020)
Article
Operations Research & Management Science
Jesus T. Pastor, Juan Aparicio, Javier Alcaraz, Fernando Vidal, Diego Pastor
CENTRAL EUROPEAN JOURNAL OF OPERATIONS RESEARCH
(2018)
Article
Management
Jesus T. Pastor, C. A. Knox Lovell, Juan Aparicio
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2020)
Article
Computer Science, Interdisciplinary Applications
Juan Aparicio, Lidia Ortiz, Jesus T. Pastor, Jon M. Zabala-Iturriagagoitia
COMPUTERS & INDUSTRIAL ENGINEERING
(2020)
Article
Energy & Fuels
Emil Heesche, Mette Asmild
Summary: In this paper, we examine the method used by the Danish water regulator to account for differences in companies' environmental conditions and propose adjustments to improve its effectiveness. The analysis reveals significant correlations between efficiency scores and external factors, suggesting the need for a new approach. Our new method, using permutation-based approaches, addresses this issue by accounting for the distribution of DEA assigned multipliers.
Article
Operations Research & Management Science
Juan Aparicio, Jose L. Zofio, Jesus T. Pastor
Summary: This paper introduces two desirable properties related to the allocative efficiency term in the decomposition of economic efficiency. It shows that the residual used to calculate allocative efficiency is numerically inconsistent in several economic efficiency decompositions. The paper presents two properties, called "essential" and "extended essential," which should be fulfilled for correct interpretation of the allocative component in these decompositions.
JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS
(2023)
Article
Management
Lorenz Aigner, Mette Asmild
Summary: Environmental efficiency and the shadow prices of undesirable outputs are important topics. In data envelopment analysis, the shadow prices can be calculated using the weights from linear programming. However, the weights for corner points are not unique, and most solvers only return one optimal value. To address this uncertainty, we propose a model that selects weights based on support from other points. We apply this model to a dataset and UK dairy farms.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2023)
Article
Operations Research & Management Science
Juan Aparicio, Fernando Borras, Lidia Ortiz, Jesus T. Pastor, Fernando Vidal
ANNALS OF OPERATIONS RESEARCH
(2019)
Article
Business, Finance
Juan Aparicio, Miguel A. Duran, Ana Lozano-Vivas, Jesus T. Pastor
JOURNAL OF FINANCIAL STABILITY
(2018)
Article
Economics
Juan Aparicio, Jose M. Cordero, Jesus T. Pastor
APPLIED ECONOMICS LETTERS
(2017)
Article
Management
Hengyu Liu, Kai Zheng
Summary: Since August 2018, African swine fever (ASF) has caused over one million pig deaths in China and led to a surge in pork prices. To address this issue, the Chinese government has implemented two farm subsidies: the compulsory culling subsidy (CCS) and the large-scale breeding subsidy (LBS). Through a game-theoretic model, the study explores the optimal design of these subsidy programs and their impacts on different stakeholders.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Reza Azad Gholami, Leif Kristoffer Sandal, Jan Uboe
Summary: This paper investigates a decentralized supply channel where a manufacturer and a retailer compete in a multi-period discrete time setting, addressing uncertain demand through dynamic channel optimization. The paper proposes solution algorithms and theorems that highlight the benefits of postponement strategies for the follower and potential harm for the manufacturer in a decentralized channel.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Anne G. Balter, Ki Wai Chau, Nikolaus Schweizer
Summary: This study examines whether the threshold parameter in the Omega ratio represents risk aversion by analyzing the asymptotic expansions for risk premia. The results suggest that the threshold in the Omega ratio represents risk aversion when the variance of the additional risk decreases with the background risk and when the density of the background risk is log-concave. Comparisons with expected utility criteria indicate that the conditions for the Omega threshold to represent risk aversion are comparable to those for exponential utility functions.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Baozhuang Niu, Fengfeng Xie, Lei Chen
Summary: This paper examines the strategic sourcing decisions of a local brand (BOP) when purchasing remanufactured components from a local supplier (LSP). The study finds that the BOP tends to decrease its purchasing orders from the LSP when the probability of overseas supply disruption is high, while the LSP is willing to sell components to the BOP when the probability is in a moderate range.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Chiang Kao
Summary: This study develops a model to calculate the maximum SBM efficiency for general network production systems, and applies it to a garment manufacturing company. The results show that the sewing operation contributes more to the system efficiency than the cutting operation does.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Baozhuang Niu, Jiayun Liu, Jianhua Zhang, Kanglin Chen
Summary: This study examines a brand's decision on reselling through a platform by using game-theoretical analysis and big data validation based on transaction-level data from JD.com. The study finds that the platform's channel advantage and high logistics service level encourage brands to choose the reselling mode, and the impact of the platform's private label competition is non-monotonic.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Ali Fereydooni, Sasan Barak, Seyed Mehrzad Asaad Sajadi
Summary: This study develops an online portfolio selection strategy that considers Environmental, Social, and Governance factors in addition to return and risk. The results indicate the superiority of the approach that considers Environmental, Social, and Governance factors in terms of profit, volatility, and the highest deflated Sharpe ratio.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Sally Giuseppe Arcidiacono, Salvatore Corrente, Salvatore Greco
Summary: This paper introduces a method to handle multiple compatible value functions in multi-criteria decision making by building a probability distribution. Stochastic multicriteria acceptability analysis provides statistical information based on the decision maker's preferences. Extensive simulations and sensitivity analysis have been conducted to demonstrate the superiority of the proposed method.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Junlin Chen, Zewu Jiang, Xiaobo Zhao, Wanshan Zhu, Jinxing Xie
Summary: In this study, we investigate a supply chain system consisting of a retailer and a supplier. We examine the threshold problem in contract design and take into account the risk preference of the retailer and the fairness concern of the supplier. The experiment shows that the behavior of the retailer affects the threshold of the optimal contract design, while the behavior of the supplier only affects the optimal wholesale price. These findings suggest that the behavior of retailers and suppliers play a crucial role in the mechanism design of supply chains.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Shuxia Peng, Bo Li, Wei Zheng
Summary: This study examines the impact of consumers' valuation updating on optimal pricing decisions and market structure in a competitive software market. The results show that with consumers' valuation updating, the incumbent can maximize profits through market segmentation, dominance, or entry deterrence strategies, and is willing to share the market with the entrant, achieving a win-win situation.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Victor Gimenez, Diego Prior, Claudio Thieme, Emili Tortosa-Ausina
Summary: This study proposes a nonparametric activity analysis methodology to assess the effectiveness of pandemic management in 61 countries nine months into the COVID-19 pandemic. The results show that effectiveness is strongly influenced by socioeconomic and cultural factors and reveal three main groups of countries based on their management level. This highlights the importance of operations research methods in accurately assessing pandemic management.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Narges Sereshti, Yossiri Adulyasak, Raf Jans
Summary: This paper investigates the stochastic multi-level lot sizing problem with a service level and explores the value of adding flexibility in such context. By modeling the problem as a two-stage stochastic program with uncertain demand and considering different demand scenarios, the study shows that adding flexibility to the system can result in cost savings, even with a small degree of flexibility.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Jafar Chaab, Georges Zaccour
Summary: This paper examines the pricing of a new product in the presence of sophisticated consumer behaviors. The study finds that forward-looking consumer behavior can either strengthen or weaken the effectiveness of a penetration pricing strategy, while the superiority of committed pricing in terms of firm's profit heavily depends on consumer behaviors.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Amelia Bilbao-Terol, Celia Bilbao-Terol
Summary: This paper presents a methodology that combines the hedonic pricing method and the Choquet integral for modelling the hotel selection process. This hybrid technique takes into account both market valuation and the importance of criteria, and holds potential benefits.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Management
Hui Li, Dongdong Wu
Summary: This study aims to investigate the impact of scale effects from restructuring on performance in tourism firms, and examine the influence of investor attention on restructuring performance. The findings reveal that restructuring activities can enhance scale effects, but the benefits decrease over time, and investor attention online also plays a role in determining restructuring performance.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
