Article
Engineering, Industrial
Juram Kim, Suckwon Hong, Yubin Kang, Changyong Lee
Summary: This article proposes an analytical framework for the valuation of university technologies using bibliometrics, Jonckheere-Terpstra tests, and data envelopment analysis. It extracts 18 potential quantitative indicators of the economic value of university technologies from technology transaction, patent, and publication databases using bibliometrics. Significant indicators suited to a specific technology field are identified using the Jonckheere-Terpstra tests. A composite indicator is developed using the DEA cross-efficiency method as a proxy for the economic value of university technologies. The validity and utility of the framework are examined through correlation analysis and the Jonckheere-Terpstra test. A case study of technologies registered at Stanford University confirms the value of the proposed framework for the valuation of university technologies.
Article
Business
Kok Fong See, Zhanxin Ma, Yuzhen Tian
Summary: This article discusses the issues in performance assessment of university technology transfer and proposes a mixed-integer generalized DEA model based on peer evaluation to address the problem. The study uses a sample of 27 provinces in China and finds that the eastern region has the highest level of efficiency in technology transfer, while the western region lags behind.
TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE
(2023)
Article
Medicine, General & Internal
Brooke E. Wilson, Annette E. Hay, Kelvin Kar-Wing Chan, Matthew C. Cheung, Timothy P. Hanna
Summary: This perspective examines the emerging role of administrative data for economic analyses in cancer. Compared with clinical trial data, administrative data have several advantages including high capture rates, less resource utilization, low misclassification rates, long follow-up periods, and the ability to collect data points not traditionally captured in trials. However, limitations such as accurate data linkage, time lag, and limited data on quality of life and indirect costs exist. The use of administrative data sets presents a unique opportunity to complement and validate economic analyses based on trial-level data in oncology.
Article
Management
Jiawei Yang, Dan Li, Yongjun Li
Summary: This paper proposes a new fixed cost allocation technique based on data envelopment analysis, which aims to balance individual efficiency guarantees and collective preference objectives. The proposed approach guarantees a minimal preference value loss and provides a reasonable evaluation procedure.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2024)
Article
Operations Research & Management Science
Mahmood Mehdiloo, Victor V. Podinovski
Summary: Applications of DEA often involve inputs and outputs that are embedded in others. Standard DEA models cannot incorporate this information, which could lead to physically impossible results. This paper demonstrates how to include information about embedded inputs and outputs in DEA models and identifies when such information is redundant or necessary to maintain consistent efficient projections with the identified embeddings.
ANNALS OF OPERATIONS RESEARCH
(2023)
Article
Health Care Sciences & Services
Juan Candido Gomez-Gallego, Maria Gomez-Gallego, Javier Fernando Garcia-Garcia, Ursula Faura-Martinez
Summary: This study evaluates the technical efficiency in European health system management using DEA and FDEA models, finding positive correlations between DEA and FDEA scores. Traditional DEA models are shown to overestimate efficiency scores, with the size of the bias positively related to income inequality and negatively related to economic freedom in the evaluated countries.
Article
Medicine, General & Internal
Youngji Jo, Amnesty Elizabeth LeFevre, Hasmot Ali, Sucheta Mehra, Kelsey Alland, Saijuddin Shaikh, Rezwanul Haque, Esther Semee Pak, Mridul Chowdhury, Alain B. Labrique
Summary: This study found that mobile phone-based pregnancy surveillance systems with individually scheduled text messages and home-visit reminder strategies are highly cost-effective in Bangladesh. The cost-effectiveness may improve further with scale and sustainability.
Article
Operations Research & Management Science
Rolf Fare, Valentin Zelenyuk
Summary: Sequential DEA is a new class of DEA modeling that allows for analyzing the efficiency of decision-making units consisting of a series of sub-DMUs. Embedded in the Hilbert sequence space, it can accommodate different numbers of sub-DMUs and inputs/outputs.
ANNALS OF OPERATIONS RESEARCH
(2021)
Article
Management
Jiawen Liu, Yeming Gong, Joe Zhu, Ryad Titah
Summary: This paper examines the impact of IT on business performance using data envelopment analysis (DEA) and proposes a theoretical framework based on network DEA models. The study found that there is little regional difference in IT performance, but significant industrial diversity. Efficiency of IT operations, rather than IT investments, was identified as the main factor leading to an increase in business performance.
JOURNAL OF THE OPERATIONAL RESEARCH SOCIETY
(2022)
Article
Mathematics, Applied
Fatemeh Mirzaeian, Reza Fallahnejad
Summary: The paper introduces new models for evaluating cost efficiency in a fully competitive setting using costs in a piecewise linear form. These models are developed for cases of non-fully competitive and integer-valued inputs. The proposed models are then applied to determine the cost efficiency of confectioneries in Islam Abad Gharb city in Iran.
MATHEMATICAL SCIENCES
(2022)
Article
Biodiversity Conservation
Fan Yang, Yongrok Choi, Hyoungsuk Lee
Summary: This study measured the CO2 and PM2.5 management performance of China's 30 provinces' transport sectors using the atmospheric environmental efficiency (AEE). The results showed that the improvement of PM2.5 efficiency was the main driver of the increase in AEE, with the western region exhibiting the fastest growth in AEE.
ECOLOGICAL INDICATORS
(2021)
Article
Operations Research & Management Science
M. Shahkooeei, F. Rezai Balf, M. Rabbani, M. Fallah Jelodar
Summary: In this paper, the importance of recognizing the inputs and outputs of an organization in decision management science is highlighted. The cost efficiency and productivity of a set of decision-making units with multiple inputs and outputs are evaluated using data envelopment analysis models.
RAIRO-OPERATIONS RESEARCH
(2022)
Review
Pharmacology & Pharmacy
Meryl Darlington, Raffaele Scarica, Xyomara Chavez-Pacheco, Laeticia Blamplain Segar, Isabelle Durand-Zaleski
Summary: This systematic review identified decrementally cost-effective health technologies that can reduce costs and improve outcomes. The findings highlight the importance of considering these technologies in health policy decisions at the national level to maximize population health outcomes.
FRONTIERS IN PHARMACOLOGY
(2022)
Article
Computer Science, Interdisciplinary Applications
Qingxian An, Zhaokun Cheng, Shasha Shi, Fenfen Li
Summary: Environmental performance is essential for sustainable development, and the use of incremental information technology to collect environmental data has become more widespread. This study introduces a new environmental efficiency measure that considers the alliances among decision-making units (DMUs) and applies it to the Xiangjiang River. The findings suggest that cities along the Xiangjiang River have generally low environmental efficiency, with Chenzhou performing the best and Xiangtan performing the worst. The study also reveals that increasing public budgetary expenditure can improve environmental efficiency, and larger alliance sizes are associated with higher environmental efficiency.
INDUSTRIAL MANAGEMENT & DATA SYSTEMS
(2022)
Article
Operations Research & Management Science
Viera Mendelova
Summary: This paper focuses on the decomposition of cost efficiency (CE) using data envelopment analysis (DEA) models in situations where input prices are not identical among decision making units (DMUs). It compares existing DEA models with a newly developed approach for CE decomposition, which disentangles CE measure into Pareto-Koopmans efficiency component, price efficiency component, and allocative efficiency component. A simple illustrative example is provided to highlight the main differences between the new and existing CE models. The applicability of the developed measures is illustrated in the context of analyzing the performance of bus transport undertakings.
OPERATIONAL RESEARCH
(2021)
Article
Management
Kristiaan Kerstens, Jafar Sadeghi, Mehdi Toloo, Ignace Van de Woestyne
Summary: This contribution extends the literature on super-efficiency by focusing on ranking cost-efficient observations. It opens up a new topic by shifting the focus to ranking cost-efficient observations. The study also examines the effect of nonconvexity on super-efficiency notions.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2022)
Article
Operations Research & Management Science
Kristiaan Kerstens, Jafar Sadeghi, Ignace Van de Woestyne, Linjia Zhang
Summary: The purpose of this study is to compute the Malmquist productivity index and incorporate a component representing plant capacity utilization. The study is the first empirical application estimating both input- and output-oriented Malmquist productivity indices along with the corresponding input- and output-oriented plant capacity utilization measures. The empirical application focuses on tourism activities in China from 2008 to 2016, and the results include the Malmquist productivity indices, correlations between input- and output-oriented indices, a t-test, and bootstrapping analysis.
ANNALS OF OPERATIONS RESEARCH
(2022)
Article
Management
Walter Briec, Audrey Dumas, Kristiaan Kerstens, Agathe Stenger
Summary: This article analyzes the impact of new weak and strong commensurability conditions on efficiency measurement, especially on productivity measurement. If strong commensurability is not satisfied, a productivity index may exhibit a homogeneity bias, leading to inconsistent and contradictory results. In particular, the Luenberger productivity indicator is sensitive to proportional changes in input-output quantities, while the Malmquist productivity index is not affected by such changes.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2022)
Correction
Operations Research & Management Science
Kristiaan Kerstens, Jafar Sadeghi, Ignace van de Woestyne, Linjia Zhang
ANNALS OF OPERATIONS RESEARCH
(2022)
Article
Agricultural Economics & Policy
Frederic Ang, Kristiaan Kerstens, Jafar Sadeghi
Summary: This study utilizes production economics to analyze the relationship between agricultural production, energy use, and greenhouse gas emissions. The empirical application on Dutch dairy farms reveals a positive association between energy productivity change and GHG emission intensity change.
JOURNAL OF AGRICULTURAL ECONOMICS
(2023)
Article
Management
Kristiaan Kerstens, Paolo Mazza, Tiantian Ren, Ignace Van de Woestyne
Summary: This contribution introduces new frontier models for rating mutual funds that can handle multiple moments and multiple times simultaneously. The models are empirically applied to hedge fund data and outperform most financial performance measures and existing frontier models in selecting promising funds.
OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE
(2022)
Article
Operations Research & Management Science
Xiaoqing Chen, Kristiaan Kerstens
Summary: This contribution investigates the effects of horizontal mergers and acquisitions on the plant capacity utilisation of Swedish district courts over the period 2000-2017. Specifically, it explores the decomposition of input-oriented and output-oriented plant capacity utilisation concepts and the impact of convexity on these measures. The study is the first to assess horizontal mergers using plant capacity utilisation concepts and finds that they improve plant capacity utilisation. The nonconvex frontier method provides a more conservative estimate of plant capacity changes.
RAIRO-OPERATIONS RESEARCH
(2023)
Article
Business
Kristiaan Kerstens, Jafar Sadeghi, Ignace van de Woestyne, John Walden
Summary: This contribution extends the current state of the art in the short-run Johansen industry model by improving the choice of weight variables, introducing an efficiency improvement imperative, and allowing for alternative plant capacity concepts. The refinements are illustrated with a planning model for curbing overfishing using data on U.S. fishing vessels.
JOURNAL OF PRODUCTIVITY ANALYSIS
(2023)
Article
Management
Qianying Jin, Antonella Basso, Stefania Funari, Kristiaan Kerstens, Ignace Van de Woestyne
Summary: Ethical mutual funds have become increasingly popular, and this article proposes a nonconvex metafrontier framework for comparing different types of mutual fund investment groups. The results suggest that ethical funds do not necessarily underperform non-ethical funds.
EUROPEAN JOURNAL OF OPERATIONAL RESEARCH
(2024)
Article
Business
Tomas Balezentis, Kristiaan Kerstens, Zhiyang Shen
Summary: This article discusses an environmental Luenberger-Hicks-Moorsteen (LHM) total factor productivity (TFP) indicator and its decomposition, which incorporates a negative externality into the measurement of economic performance. Special cases of a generalized environmental directional distance function are used to define this LHM indicator and its proposed decomposition. The study applies two specifications of the by-production nonparametric environmental technology to estimate the changes in China's textile industry's environmental TFP. The results show differences in the decomposition of the LHM indicator depending on the convexity assumption and suggest an increase in China's textile industry TFP.
IEEE TRANSACTIONS ON ENGINEERING MANAGEMENT
(2022)
Article
Business
Kristiaan Kerstens, Zhiyang Shen
Summary: This study defines short- and long-term output- and input-oriented plant capacity measures and evaluates their use in analyzing the evolution of extra hospital capacity in Hubei province during the COVID-19 outbreak in early 2020. The research leverages medical literature to select the most plausible plant capacity concept, with preliminary results showing that an input-oriented concept correlates best with mortality rates.
TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE
(2021)