[language-switcher]

Aguilar-Martinez, M.D.M., Sanchez-Guillen, L., Barber-Valles, X., Alcaide-Quiros M.J., Bosch-Ramirez M., Lopez-Delgado A., Tozer, P., Arroyo, A. (2021) «Long-term Evaluation of Fistulotomy and Immediate Sphincteroplasty as a Treatment for Complex Anal Fistula», Diseases of the Colon and Rectum, 1374–1384

  Maria Del Mar Aguilar-Martinez,  Luís Sánchez-Guillén, María José Alcaide-Quirós, Marina Bosch-Ramírez,  Alberto López-Delgado, Antonio Arroyo (Department of General Surgery, Colorectal Unit, Elche University Hospital, University Miguel Hernandez of Elche), Xavier Barber (University Miguel Hernández of Elche) and  Phillip James Tozer (Fistula Research Unit, St. Mark’s Hospital and Academic Institute, Harrow, Middlesex, United Kingdom
Department of […]

Barber, X. et al. (249) (2021) «COVID-19 in hospitalized HIV-positive and HIV-negative patients: A matched study», HIV Medicine,

Xavier Barber (University Miguel Hernández of Elche) et al. 
Abstract: Objectives: We compared the characteristics and clinical outcomes of hospitalized individuals with COVID-19 with [people with HIV (PWH)] and without (non-PWH) HIV co-infection in Spain during the first wave of the pandemic. Methods: This was a retrospective matched cohort study. People with HIV were identified by reviewing […]

Aparicio, J., Ortiz, L., Santín, D. (2021) «Comparing group performance over time through the Luenberger productivity indicator: An application to school ownership in European countries», European Journal of Operational Research, 294 (2):651–672

 Juan Aparicio, Lidia Ortiz (University Miguel Hernández of Elche) and Daniel Santín (Complutense Institute of Economic Analysis, Complutense University of Madrid)
Abstract: This paper extends the Camanho and Dyson (2006) one-period Malmquist-type index (CDMI) and the recent pseudo-panel Malmquist index (PPMI) by Aparicio et al. (2017) and Aparicio and Santín (2018) to a context where additive efficiency […]

Valero-Carreras, D., Aparicio, J., Guerrero, N.M. (2021) «Support vector frontiers: A new approach for estimating production functions through support vector machines», Omega, 104, 102490

Daniel Valero, Juan Aparicio and Nadia Guerrero (University Miguel Hernández of Elche)
Abstract: In microeconomics, a topic of interest is the estimation of production functions. By definition, a production function is a non-decreasing function that envelops all the observations (firms) from above in the input-output space, capturing the extreme behavior of the data. These characteristics are far […]

Aparicio, J., Rodríguez, D.Y., Zabala-Iturriagagoitia, J.M. (2021) "The systemic approach as an instrument to evaluate higher education systems: Opportunities and challenges", Research Evaluation, 30 (3):336–348

Juan Aparicio (University Miguel Hernández of Elche), Dorys Yaneth Rodríguez  and Jon Mikel Zabala-Iturriagagoitia (University of Deusto)
Abstract: This article aims to provide a systemic instrument to evaluate the functioning of higher education systems. Despite systemic instruments have had a strong impact on the management of public policy systems in fields such as health and innovation, higher […]

Aparicio, J., Cordero, J.M., Ortiz, L. (2021) «Efficiency analysis with educational data: How to deal with plausible values from international large-scale assessments», Mathematics, 9 (13): 1579

Juan Aparicio, Lidia Ortiz (University Miguel Hernández of Elche) and José Manuel Cordero (Department of Economics, University of Extremadura)
Abstract: International large-scale assessments (ILSAs) provide several measures as a representation of educational outcomes, the so-called plausible values, which are frequently interpreted as a representation of the ability range of students. In this paper, we focus […]

Aparicio, J., Kapelko, M., Ortiz, L. (2021) «Modelling environmental inefficiency under a quota system», Operational Research, 21 (2):1097–1124

Juan Aparicio, Lidia Ortiz (University Miguel Hernández of Elche) and Magdalena Kapelko (Institute of Applied Mathematics, Department of Logistics, Wrocław University of Economics)
Abstract:  This paper introduces the methodology necessary to evaluate inefficiency of regulated decision making units that operate under quotas through data envelopment analysis, accounting for both quotas restrictions and negative environmental externalities of […]

de las Mercedes Capobianco-Uriarte, M., Aparicio, J., de Pablo-Valenciano, J., del Pilar Casado-Belmonte, M. (2021) «The European tomato market. An approach by export competitiveness maps», PLoS ONE, 2021, 16(5 May), e0250867

María de las Mercedes Capobianco, Jaime P. De Pablo Valenciano, María Del PilarCasado-Belmonte (Economics and Business Department, University of Almería) and Juan Aparicio (University Miguel Hernández of Elche)
Abstract: Most empirical studies examining the export competitiveness of a country in a target market are undertaken by focusing on supply, only analysing the group of competing countries. In […]

Zabala-Iturriagagoitia, J.M., Aparicio, J., Ortiz, L., Carayannis, E.G., Grigoroudis, E. (2021) «The productivity of national innovation systems in Europe: Catching up or falling behind?», Technovation, 102, 102215

Jon Mikel Zabala (University of Deusto and South Eastern University Norway) Juan Aparicio, Lidia Ortiz (University Miguel Hernández of Elche), Elias George Carayannis (George Washington University, GWU School of Business) and Evangelos Grigoroudis (Technical University of Crete, Chania, Greece)
Abstract: Innovation is one of the main determinants of economic development in modern societies. The extant evidence […]

Aparicio, J., Zofío, J.L. (2021) «Economic cross-efficiency», Omega, 100, 102374

Juan Aparicio (Universidad Miguel Hernández de Elche)  and José Luis Zofío (Universidad Autónoma de Madrid)
Abstract: This paper introduces a series of new concepts under the name of Economic Cross-Efficiency, which is rendered operational through Data Envelopment Analysis (DEA) techniques. To achieve this goal, from a theoretical perspective, we connect two key topics in the efficiency […]