EDAS method for multiple criteria group decision making with picture fuzzy information and its application to green suppliers selections

In this paper, we construct picture fuzzy EDAS model based on traditional EDAS (Evaluation based on Distance from Average Solution) model. Firstly, we briefly review the definition of picture fuzzy sets (PFSs) and introduce the score function, accuracy function and operational laws of picture fuzzy numbers (PFNs). Then, we combine traditional EDAS model for MCGDM with PFNs. In our model, it’s more accuracy and effective for considering the conflicting attributes. Finally, a numerical example for green supplier selection has been given to illustrate this new model and some comparisons between EDAS model with PFNs and PFWA, PFWG aggregation operators are also conducted to further illustrate advantages of the new method. First published online 23 August 201

Mantenimiento basado en toma de decisiones multicriterio para incrementar disponibilidad de equipos industriales en empresa de servicios alimentarios

La presente investigación tuvo como objetivo evaluar la implementación de mantenimiento basado en toma de decisiones multicriterio para incrementar la disponibilidad de equipos industriales en una empresa de servicios alimentarios de la empresa Cordón Blue. Para lograr dicho objetivo se realizó un estudio cuantitativo del tipo aplicada, diseño preexperimental longitudinal y de alcance correlacional causal. La población estudiada, conformada por 8 equipos industriales, la muestra fue de 2 equipos y unidad de análisis 1 equipo en base al equipo de mayor criticidad por parada no planeada, cuya disponibilidad era del 92%. Se determino con las fallas del activo una estrategia de análisis con la toma de decisiones multicriterio, basándose en los métodos de árbol de decisiones y el método de suma ponderada, para generar la implementación de un plan de mantenimiento preventivo, por consecuencia del incremento de la disponibilidad al 97% se evaluó el costo beneficio de implementar el plan el cual dio un resultado favorable de 18.14. Se concluyo que al aplicar la toma de decisiones multicriterio nos permitió la decisión para implementar el plan de mantenimiento, resultando en el incremento de la disponibilidad del equip

A Hybrid Fuzzy Multi-criteria Decision Making Model to Evaluate the Overall Performance of Public Emergency Departments: A Case Study

[EN] Performance evaluation is relevant for supporting managerial decisions related to the improvement of public emergency departments (EDs). As different criteria from ED context and several alternatives need to be considered, selecting a suitable Multicriteria Decision-Making (MCDM) approach has become a crucial step for ED performance evaluation. Although some methodologies have been proposed to address this challenge, a more complete approach is still lacking. This paper bridges this gap by integrating three potent MCDM methods. First, the Fuzzy Analytic Hierarchy Process (FAHP) is used to determine the criteria and sub-criteria weights under uncertainty, followed by the interdependence evaluation via fuzzy Decision-Making Trial and Evaluation Laboratory(FDEMATEL). The fuzzy logic is merged with AHP and DEMATEL to illustrate vague judgments. Finally, the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) is used for ranking EDs. This approach is validated in a real 3-ED cluster. The results revealed the critical role of Infrastructure (21.5%) in ED performance and the interactive nature of Patient safety (C+R =12.771). Furthermore, this paper evidences the weaknesses to be tackled for upgrading the performance of each ED.Ortiz-Barrios, M.; Alfaro Saiz, JJ. (2020). A Hybrid Fuzzy Multi-criteria Decision Making Model to Evaluate the Overall Performance of Public Emergency Departments: A Case Study. International Journal of Information Technology & Decision Making. 19(6):1485-1548. https://doi.org/10.1142/S0219622020500364S14851548196Lord, K., Parwani, V., Ulrich, A., Finn, E. B., Rothenberg, C., Emerson, B., … Venkatesh, A. K. (2018). Emergency department boarding and adverse hospitalization outcomes among patients admitted to a general medical service. The American Journal of Emergency Medicine, 36(7), 1246-1248. doi:10.1016/j.ajem.2018.03.043Sørup, C. M., Jacobsen, P., & Forberg, J. L. (2013). Evaluation of emergency department performance – a systematic review on recommended performance and quality-in-care measures. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine, 21(1). doi:10.1186/1757-7241-21-62Farokhi, S., & Roghanian, E. (2018). Determining quantitative targets for performance measures in the balanced scorecard method using response surface methodology. Management Decision, 56(9), 2006-2037. doi:10.1108/md-08-2017-0772Ortiz Barrios, M. A., & Felizzola Jiménez, H. (2016). Use of Six Sigma Methodology to Reduce Appointment Lead-Time in Obstetrics Outpatient Department. Journal of Medical Systems, 40(10). doi:10.1007/s10916-016-0577-3Sunder M., V., Ganesh, L. S., & Marathe, R. R. (2018). A morphological analysis of research literature on Lean Six Sigma for services. International Journal of Operations & Production Management, 38(1), 149-182. doi:10.1108/ijopm-05-2016-0273Bergeron, B. P. (2017). 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(2018). A Fuzzy AHP–TOPSIS-Based Group Decision-Making Approach to IT Personnel Selection. International Journal of Fuzzy Systems, 20(5), 1576-1591. doi:10.1007/s40815-018-0474-7CHEN, M.-F., TZENG, G.-H., & TANG, T.-I. (2005). FUZZY MCDM APPROACH FOR EVALUATION OF EXPATRIATE ASSIGNMENTS. International Journal of Information Technology & Decision Making, 04(02), 277-296. doi:10.1142/s0219622005001520Gul, M., Celik, E., Gumus, A. T., & Guneri, A. F. (2016). Emergency department performance evaluation by an integrated simulation and interval type-2 fuzzy MCDM-based scenario analysis. European J. of Industrial Engineering, 10(2), 196. doi:10.1504/ejie.2016.075846Jovčić, Průša, Dobrodolac, & Švadlenka. (2019). A Proposal for a Decision-Making Tool in Third-Party Logistics (3PL) Provider Selection Based on Multi-Criteria Analysis and the Fuzzy Approach. Sustainability, 11(15), 4236. doi:10.3390/su11154236Saaty, T. L., & Vargas, L. G. (2012). 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Computers & Industrial Engineering, 132, 84-97. doi:10.1016/j.cie.2019.04.023Emrouznejad, A., & Yang, G. (2018). A survey and analysis of the first 40 years of scholarly literature in DEA: 1978–2016. Socio-Economic Planning Sciences, 61, 4-8. doi:10.1016/j.seps.2017.01.008Arya, A., & Yadav, S. P. (2017). Development of FDEA Models to Measure the Performance Efficiencies of DMUs. International Journal of Fuzzy Systems, 20(1), 163-173. doi:10.1007/s40815-017-0325-yMufazzal, S., & Muzakkir, S. M. (2018). A new multi-criterion decision making (MCDM) method based on proximity indexed value for minimizing rank reversals. Computers & Industrial Engineering, 119, 427-438. doi:10.1016/j.cie.2018.03.045Kaliszewski, I., & Podkopaev, D. (2016). Simple additive weighting—A metamodel for multiple criteria decision analysis methods. Expert Systems with Applications, 54, 155-161. doi:10.1016/j.eswa.2016.01.042Mousavi-Nasab, S. H., & Sotoudeh-Anvari, A. (2018). A new multi-criteria decision making approach for sustainable material selection problem: A critical study on rank reversal problem. Journal of Cleaner Production, 182, 466-484. doi:10.1016/j.jclepro.2018.02.062Chen, Z., Ming, X., Zhang, X., Yin, D., & Sun, Z. (2019). A rough-fuzzy DEMATEL-ANP method for evaluating sustainable value requirement of product service system. Journal of Cleaner Production, 228, 485-508. doi:10.1016/j.jclepro.2019.04.145Jumaah, F. M., Zadain, A. A., Zaidan, B. B., Hamzah, A. K., & Bahbibi, R. (2018). Decision-making solution based multi-measurement design parameter for optimization of GPS receiver tracking channels in static and dynamic real-time positioning multipath environment. Measurement, 118, 83-95. doi:10.1016/j.measurement.2018.01.011Singh, A., & Prasher, A. (2017). Measuring healthcare service quality from patients’ perspective: using Fuzzy AHP application. Total Quality Management & Business Excellence, 30(3-4), 284-300. doi:10.1080/14783363.2017.1302794Otay, İ., Oztaysi, B., Cevik Onar, S., & Kahraman, C. (2017). Multi-expert performance evaluation of healthcare institutions using an integrated intuitionistic fuzzy AHP&DEA methodology. Knowledge-Based Systems, 133, 90-106. doi:10.1016/j.knosys.2017.06.028Awasthi, A., Govindan, K., & Gold, S. (2018). Multi-tier sustainable global supplier selection using a fuzzy AHP-VIKOR based approach. International Journal of Production Economics, 195, 106-117. doi:10.1016/j.ijpe.2017.10.013Gul, M., Guneri, A. F., & Nasirli, S. M. (2018). A fuzzy-based model for risk assessment of routes in oil transportation. International Journal of Environmental Science and Technology, 16(8), 4671-4686. doi:10.1007/s13762-018-2078-zKazancoglu, Y., Kazancoglu, I., & Sagnak, M. (2018). Fuzzy DEMATEL-based green supply chain management performance. 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Multi-criteria decision analysis for supporting the selection of medical devices under uncertainty. European Journal of Operational Research, 247(1), 216-228. doi:10.1016/j.ejor.2015.05.075Kovacs, E., Strobl, R., Phillips, A., Stephan, A.-J., Müller, M., Gensichen, J., & Grill, E. (2018). Systematic Review and Meta-analysis of the Effectiveness of Implementation Strategies for Non-communicable Disease Guidelines in Primary Health Care. Journal of General Internal Medicine, 33(7), 1142-1154. doi:10.1007/s11606-018-4435-5Morley, C., Unwin, M., Peterson, G. M., Stankovich, J., & Kinsman, L. (2018). Emergency department crowding: A systematic review of causes, consequences and solutions. PLOS ONE, 13(8), e0203316. doi:10.1371/journal.pone.0203316Hermann, R. M., Long, E., & Trotta, R. L. (2019). Improving Patients’ Experiences Communicating With Nurses and Providers in the Emergency Department. Journal of Emergency Nursing, 45(5), 523-530. doi:10.1016/j.jen.2018.12.001Hawley, K. L., Mazer-Amirshahi, M., Zocchi, M. S., Fox, E. R., & Pines, J. M. (2015). Longitudinal Trends in U.S. Drug Shortages for Medications Used in Emergency Departments (2001-2014). Academic Emergency Medicine, 23(1), 63-69. doi:10.1111/acem.12838Stang, A. S., Crotts, J., Johnson, D. W., Hartling, L., & Guttmann, A. (2015). Crowding Measures Associated With the Quality of Emergency Department Care: A Systematic Review. Academic Emergency Medicine, 22(6), 643-656. doi:10.1111/acem.12682Chanamool, N., & Naenna, T. (2016). Fuzzy FMEA application to improve decision-making process in an emergency department. Applied Soft Computing, 43, 441-453. doi:10.1016/j.asoc.2016.01.007Farup, P. G. (2015). Are measurements of patient safety culture and adverse events valid and reliable? Results from a cross sectional study. BMC Health Services Research, 15(1). doi:10.1186/s12913-015-0852-xCarter, E. J., Pouch, S. M., & Larson, E. L. (2013). The Relationship Between Emergency Department Crowding and Patient Outcomes: A Systematic Review. Journal of Nursing Scholarship, 46(2), 106-115. doi:10.1111/jnu.12055Ebben, R. H. A., Siqeca, F., Madsen, U. R., Vloet, L. C. M., & van Achterberg, T. (2018). Effectiveness of implementation strategies for the improvement of guideline and protocol adherence in emergency care: a systematic review. BMJ Open, 8(11), e017572. doi:10.1136/bmjopen-2017-017572Innes, G. D., Sivilotti, M. L. A., Ovens, H., McLelland, K., Dukelow, A., Kwok, E., … Chochinov, A. (2018). Emergency overcrowding and access block: A smaller problem than we think. CJEM, 21(2), 177-185. doi:10.1017/cem.2018.446Di Somma, S., Paladino, L., Vaughan, L., Lalle, I., Magrini, L., & Magnanti, M. (2014). Overcrowding in emergency department: an international issue. Internal and Emergency Medicine, 10(2), 171-175. doi:10.1007/s11739-014-1154-8Uthman, O. A., Walker, C., Lahiri, S., Jenkinson, D., Adekanmbi, V., Robertson, W., & Clarke, A. (2018). General practitioners providing non-urgent care in emergency department: a natural experiment. BMJ Open, 8(5), e019736. doi:10.1136/bmjopen-2017-019736Razzak, J. A., Baqir, S. M., Khan, U. R., Heller, D., Bhatti, J., & Hyder, A. A. (2013). Emergency and trauma care in Pakistan: a cross-sectional study of healthcare levels. Emergency Medicine Journal, 32(3), 207-213. doi:10.1136/emermed-2013-202590Dart, R. C., Goldfrank, L. R., Erstad, B. L., Huang, D. T., Todd, K. H., Weitz, J., … Anderson, V. E. (2018). Expert Consensus Guidelines for Stocking of Antidotes in Hospitals That Provide Emergency Care. Annals of Emergency Medicine, 71(3), 314-325.e1. doi:10.1016/j.annemergmed.2017.05.021Mkoka, D. A., Goicolea, I., Kiwara, A., Mwangu, M., & Hurtig, A.-K. (2014). 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An Interactive Signed Distance Approach for Multiple Criteria Group Decision-Making Based on Simple Additive Weighting Method with Incomplete Preference Information Defined by Interval Type-2 Fuzzy Sets. International Journal of Information Technology & Decision Making, 13(05), 979-1012. doi:10.1142/s0219622014500229Gou, X., Xu, Z., & Liao, H. (2019). Hesitant Fuzzy Linguistic Possibility Degree-Based Linear Assignment Method for Multiple Criteria Decision-Making. International Journal of Information Technology & Decision Making, 18(01), 35-63. doi:10.1142/s0219622017500377Saksrisathaporn, K., Bouras, A., Reeveerakul, N., & Charles, A. (2016). Application of a Decision Model by Using an Integration of AHP and TOPSIS Approaches within Humanitarian Operation Life Cycle. International Journal of Information Technology & Decision Making, 15(04), 887-918. doi:10.1142/s0219622015500261Hsiao, B., & Chen, L.-H. (2019). Performance Evaluation for Taiwanese Hospitals by Multi-Activity Network Data Envelopment Analysis. International Journal of Information Technology & Decision Making, 18(03), 1009-1043. doi:10.1142/s0219622018500165Saaty, T. L., & Ergu, D. (2015). When is a Decision-Making Method Trustworthy? Criteria for Evaluating Multi-Criteria Decision-Making Methods. International Journal of Information Technology & Decision Making, 14(06), 1171-1187. doi:10.1142/s021962201550025xChang, K.-H., Chang, Y.-C., & Lee, Y.-T. (2014). Integrating TOPSIS and DEMATEL Methods to Rank the Risk of Failure of FMEA. International Journal of Information Technology & Decision Making, 13(06), 1229-1257. doi:10.1142/s0219622014500758Yeh, T.-M., & Huang, Y.-L. (2014). Factors in determining wind farm location: Integrating GQM, fuzzy DEMATEL, and ANP. Renewable Energy, 66, 159-169. doi:10.1016/j.renene.2013.12.003Ortíz, M. A., Felizzola, H. A., & Isaza, S. N. (2015). A contrast between DEMATEL-ANP an

Adoção de critérios de sustentabilidade no planejamento de compras da administração federal a luz da nova teoria institucional

Tese (doutorado)—Universidade de Brasília, Faculdade de Economia, Administração e Contabilidade e Gestão Pública, Programa de Pós-Graduação em Administração, 2020.Essa tese teve como objetivo geral investigar sob o prisma da Nova Teoria Institucional (NTI) as respostas organizacionais as pressões para a inserção de critérios socioambientais no planejamento das compras públicas. Quanto aos métodos e técnicas de pesquisa, o estudo é classificado como exploratório, descritivo, aplicado e com abordagem qualitativa. O tamanho amostral foi definido pela técnica da saturação teórica. Foi utilizada a triangulação metodológica em relação aos instrumentos de coleta de dados: pesquisa documental e entrevista em profundidade. No total foram realizadas doze entrevistas, cada uma com gestores ou técnicos da área de compras de órgãos e entidades da Administração Pública Federal, sediados no Distrito Federal, que realizaram a inclusão de critérios de sustentabilidade na fase de planejamento de compras públicas realizadas no período de janeiro de 2017 a junho de 2018. A análise de conteúdo permitiu a elaboração de categorias e subcategorias prévias que fundamentaram a interpretação final do estudo. Foram identificas pressões coercitivas, normativas e miméticas para a adoção de critérios sustentáveis nos editais de compras públicas. Todavia, mesmo diante das pressões ambientais, com base nos relatos dos entrevistados e da pesquisa documental realizada, constatou-se um desalinhamento entre as práticas organizacionais e as normas e políticas relacionadas a adoção de critérios sustentáveis, o que evidencia uma situação de desacoplamento entre política e prática. No que se refere às contribuições do trabalho, os resultados alcançados são importantes para o desenvolvimento da NTI por apontarem a relevância e aplicabilidade do decoupling entre políticas e práticas para o estudo da adoção de critérios no planejamento das compras públicas em países em desenvolvimento. Além disso, esta tese apresenta como contribuição em termos de métodos e técnicas de pesquisa a utilização da triangulação metodológica e aponta implicações dos resultados do estudo para técnicos, gestores e responsáveis pela elaboração de normas e políticas da área de Compra Pública Sustentável (CPS).The main objective of this thesis was to investigate, under the prism of the New Institutional Theory (NIT), the organizational response to the pressure to insert socioenvironmental criteria in the planning of public purchases. As for research methods and techniques, the study is classified as exploratory, descriptive, applied and with a qualitative approach. The sample size was defined by the theoretical saturation technique. Methodological triangulation was used in relation to the data collection instruments: documentary research and in-depth interview. In total, twelve interviews were carried out with managers or technicians in the procurement area of agencies and entities of the Federal Public Administration, based in the Federal District, who carried out the inclusion of sustainability criteria in the planning phase of public procurement carried out during the period from January 2017 to June 2018. Content analysis allowed the development of previous categories and subcategories that supported the final interpretation of the study. Coercive, normative and mimetic pressures were identified for the adoption of sustainable criteria in public procurement notices. However, even in the face of environmental pressures, there was a misalignment between organizational practices and norms and policies related to the adoption of sustainable criteria, which shows a situation of decoupling between politics and practice. With regard to the contributions of the work, the results achieved are important for the development of NTI because they point out the relevance and applicability of decoupling between policies and practices for the study of the adoption of criteria in the planning of public procurement in developing countries. In addition, this thesis presents as contribution in terms of research methods and techniques the use of methodological triangulation and points out implications of the study results for technicians, managers and those responsible for the development of norms and policies in the Sustainable Public Procurement (SPP) area

Redesigning the Barranquilla's public emergency care network to improve the patient waiting time

Tesis por compendio[ES] La oportunidad en la atención es uno de los críticos de mayor relevancia en la satisfacción de los pacientes que acuden a los servicios de Urgencias. Por tal motivo, las instituciones prestadoras de servicio y las organizaciones gubernamentales deben propender conjuntamente por una atención cada vez más oportuna a costos operacionales razonables. En el caso de la Red Pública en Servicios de Urgencias de Barrannquilla, compuesta por 8 puntos de atención y 2 hospitales, la tendencia marca un continuo crecimiento de la oportunidad en la atención con una tasa de 3,08 minutos/semestre y una probabilidad del 93,13% de atender a los pacientes después de una espera mayor a 30 minutos. Lo anterior se constituye en un síntoma inequívoco de la incapacidad de la Red para satisfacer los estándares de oportunidad establecidos por el Ministerio de Salud, hecho que podría desencadenar el desarrollo de sintomatologías de mayor complejidad, el incremento de la probabilidad de mortalidad, el requerimiento de servicios clínicos más complejos (hospitalización y cuidados intensivos) y el aumento de los costos asociados al servicio. En consecuencia, la presente tesis doctoral presenta el rediseño de la Red Pública en Servicios de Urgencias anteriormente mencionada a fin de otorgar a la población diana un servicio eficiente y altamente oportuno donde tanto las instituciones prestadoras del servicio como los organismos gubernamentales converjan efectivamente. Para ello, fue necesaria la ejecución de 4 grandes fases a través de las cuales se consolidó una propuesta orientada al desarrollo efectivo y sostenible de las operaciones de la Red. Primero, se caracterizó la Red Pública de Servicios de Urgencias en Salud considerando su comportamiento actual en términos de demanda y oportunidad de la atención. Luego, a través de una revisión sistemática de la literatura, se identificaron los enfoques metodológicos que se han implementado para la mejora de la oportunidad y otros indicadores de rendimiento asociados al servicio de Urgencias. Posteriormente, se diseñó una metodología para la creación de redes de Urgencias eficientes y sostenibles la cual luego se validó en la Red Pública sudamericana a fin de disminuir la oportunidad de atención promedio en Urgencias y garantizar la distribución equitativa de los beneficios financieros derivados de la colaboración. Finalmente, se construyó un modelo multicriterio que permitió evaluar el rendimiento de los departamentos de Urgencia e impulsó la creación de estrategias de mejora focalizadas en incrementar su respuesta ante la demanda cambiante, los críticos de satisfacción y las condiciones de operación estipuladas en la ley. Los resultados de esta aplicación evidenciaron que los pacientes que acceden a la Red tienden a esperar en promedio 201,6 min con desviación de estándar de 81,6 min antes de ser atendidos por urgencia. Por otro lado, de acuerdo con la revisión de literatura, la combinación de técnicas de investigación de operaciones, ingeniería de la calidad y analítica de datos es ampliamente recomendada para abordar este problema. En ese sentido, una metodología basada en modelos colaterales de pago, simulación de procesos y lean seis sigma fue propuesta y validada generando un rediseño de Red cuya oportunidad de atención promedio podría disminuir entre 6,71 min y 9,08 min con beneficios financieros promedio de US$29,980/nodo. En último lugar, un modelo compuesto por 8 criterios y 35 sub-criterios fue diseñado para evaluar el rendimiento general de los departamentos de Urgencias. Los resultados del modelo evidenciaron el rol crítico de la infraestructura (Peso global = 21,5i garantir la distribució equitativa dels beneficis financers derivats de la col´laboració. Finalment, es va construir un model multicriteri que va permetre avaluar el rendiment dels departaments d'Urgència i va impulsar la creació d'estratègies de millora focalitzades en incrementar la seva resposta davant la demanda canviant, els crítics de satisfacció i les condicions d'operació estipulades en la llei. Els resultats d'aquesta aplicació van evidenciar que els pacients que accedeixen a la Xarxa tendeixen a esperar de mitjana 201,6 min amb desviació d'estàndard de 81,6 min abans de ser atesos per urgència. D'altra banda, d'acord amb la revisió de literatura, la combinació de tècniques d'investigació d'operacions, enginyeria de la qualitat i analítica de dades és àmpliament recomanada per abordar aquest problema. En aquest sentit, una metodologia basada en models col´laterals de pagament, simulació de processos i llegeixin 6 sigma va ser proposada i validada generant un redisseny de Xarxa la oportunitat d'atenció mitjana podria disminuir entre 6,71 min i 9,08 min amb beneficis financers mitjana d'US$ 29,980 / node. En darrer lloc, un model compost per 8 criteris i 35 sub-criteris va ser dissenyat per avaluar el rendiment general dels departaments d'Urgències. Els resultats de el model evidenciar el paper crític de la infraestructura (Pes global = 21,5%) en el rendiment dels departaments d'Urgència i la naturalesa interactiva de la Seguretat de l'Pacient (C + R = 12,771).[EN] Waiting time is one of the most critical measures in the satisfaction of patients admitted within emergency departments. Therefore, hospitals and governmental organizations should jointly aim to provide timely attention at reasonable costs. In the case of Barranquilla's Pubic Emergency Service Network, composed by 8 Points of care (POCs) and 2 hospitals, the trend evidences a continuous growing of the waiting time with a rate of 3,08 min/semester and a 93,13% likelihood of serving patients after waiting for more than 30 minutes. This is an unmistakable symptom of the network inability for satisfying the standards established by the Ministry of Health, which may trigger the development of more complex symptoms, increase in the death rate, requirement for more complex clinical services (hospitalization and intensive care unit) and increased service costs. This doctoral dissertation then illustrates the redesign of the aforementioned Public Emergency Service Network aiming at providing the target population with an efficient and highly timely service where both hospitals and governmental institutions effectively converge. It was then necessary to implement a 4-phase methodology consolidating a proposal oriented to the effective and sustainable development of network operations. First, the Public Emergency Service Network was characterized considering its current behavior in terms of demand and waiting time. A systematic literature review was then undertaken for identifying the methodological approaches that have been implementing for improving the waiting time and other performance indicators associated with the emergency care service. Following this, a methodology for the creation of efficient and sustainable emergency care networks was designed and later validated in the Southamerican Public network for lessening the average waiting time and ensuring the equitable distribution of profits derived from the collaboration. Ultimately, a multicriteria decision-making model was created for assessing the performance of the emergency departments and propelling the design of improvement strategies focused on bettering the response against the changing demand conditions, critical to satisfaction and operational conditions. The results evidenced that the patients accessing to the network tend to wait 201,6 min on average with a standard deviation of 81,6 min before being served by the emergency care unit. On the other hand, based on the reported literature, it is highly suggested to combine Operations Research (OR) methods, quality-based techniques, and data-driven approaches for addressing this problem. In this sense, a methodology based on collateral payment models, Discrete-event simulation, and Lean Six Sigma was proposed and validated resulting in a redesigned network whose average waiting time may diminish between 6,71 min and 9,08 min with an average profit US$29,980/node. Lately, a model comprising of 8 criteria and 35 sub-criteria was designed for evaluating the overall performance of emergency departments. The model outcomes revealed the critical role of Infrastructure (Global weight = 21,5%) in ED performance and the interactive nature of Patient Safety (C + R = 12,771).Ortíz Barrios, MÁ. (2020). Redesigning the Barranquilla's public emergency care network to improve the patient waiting time [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/156215TESISCompendi

Modelling the structure of intermodal transport terminals

Ekonomski razvoj, globalizacija, demografske promene, tehnološki razvoj, klimatske promene itd. generišu sve kompleksnije zahteve u oblastima logistike i transporta, kao jednog od podsistema logistike, i dovode do veoma raznovrsnih zahteva za transportom robe uz zadovoljenje visokih očekivanja svih učesnika, primenu savremenih tehnoloških rešenja i poštovanje načela održivog razvoja. Jedan od preduslova za zadovoljenje ovih zahteva jeste intenzivni razvoj i primena intermodalnog transporta, pri čemu je adekvatno planiranje i razvoj intermodalnih terminala, kao jednog od ključnih podsistema intermodalnog transporta, od presudnog značaja. Ovo je bio glavni motiv za izbor teme ove disertacije koja se bavi modeliranjem terminala intermodalnog transporta, procenom njihove efikasnosti i izborom efikasnih tipičnih struktura terminala u zavisnosti od širokog skupa zahteva, ciljeva i faktora. Cilj disertacije je bio dokazati da: efikasnost terminala intermodalnog transporta zavisi od različitih elemenata za definisanje strukture; adekvatno strukturiranje terminala zahteva analizu uticaja velikog broja različitih faktora koji opisuju društveno-privredno okruženje, zahteve logističkih tokova i razvojne karakteristike sistema;. efikasnost terminala zavisi od faktora koji utiču na njihovo strukturiranje i koji su prisutni u različitim kombinacijama i sa različitim intenzitetom i obimom; postojeći modeli i metode za planiranje terminala intermodalnog transporta u obzir uzimaju samo pojedine aspekte strukturiranja i ne sagledavaju problem na sveobuhvatan način koji u obzir uzima različite uticaje i faktore; kombinovanjem elemenata za definisanje strukture terminala mogu se dobiti potencijalne strukture terminala, čija se efikasnost može odrediti na osnovu karakteristika veza koje postoje između elemenata strukture i identifikovanih tipičnih struktura. U disertaciji su definisani i opisani sistem intermodalnog transporta i svi njegovi podsistemi, elementi za definisanje strukture terminala intermodalnog transporta, faktori koji utiču na elemente za definisanje strukture, kao i zahtevi i ciljevi interesnih grupa koje učestvuju u intermodalnom transportu. Izvršeno je vrednovanje i rangiranje elemenata strukture i izbor ključnih elemenata na osnovu kojih su definisane tipične strukture terminala i izvršeno njihovo grupisanje. Na osnovu opsežnog istraživanja i prikupljenih podataka o 180 intermodalnih terminala u Evropi izvršen je izbor efikasnih tipičnih struktura. Na osnovu identifikovanih veza između elemenata strukture terminala i njihovih efikasnosti izvršeno je modeliranje potencijalnih struktura terminala i procena njihovih efikasnosti. Takođe je izvršena analiza lokacije intermodalnih terminala i izbor tehnologije podsistema, kao elemenata strukture terminala koji nisu izabrani kao ključni, ali imaju značajan uticaj na strukture intermodalnih terminala...Economic development, globalization, demographic change, technological development, climate change, etc. generate increasingly complex requirements in the fields of logistics and transport, as one of the subsystems of logistics, and lead to very diverse requirements for the transport of goods while satisfying the high expectations of all participants, applying modern technological solutions and respecting the principles of the sustainable development. One of the preconditions for satisfying these requirements is the intensive development and application of the intermodal transport, whereby the planning and development of intermodal terminals, as one of the key intermodal transport subsystems, is crucial. This was the main motive for the choice of the topic of this dissertation dealing with the modeling of the intermodal transport terminals, the assessment of their efficiency and the selection of efficient typical terminal structures, depending on a wide set of requirements, goals and factors. The aim of the dissertation was to prove that: the efficiency of the intermodal transport terminal depends on different elements for defining the structure; adequate terminal structuring requires an analysis of the impact of a large number of different factors describing the socio-economic environment, the requirements of logistics flows and the developmental characteristics of the system; the efficiency of the terminal depends on the factors that influence their structuring, which are present in different combinations and with different intensities and volumes; existing models and methods for planning intermodal transport terminals take into account only certain aspects of structuring and do not perceive the problem in a comprehensive way that takes into account different influences and factors; by combining the elements for defining the structure of the terminal, potential terminal structures can be obtained, the efficiency of which can be determined based on the characteristics of the relationships that exist between the elements of the structure and the identified typical structures. The dissertation defines and describes the system of intermodal transport and all its subsystems, elements for defining the structure of the intermodal transport terminal, the factors that influence the elements for defining the structure, as well as the requirements and objectives of the stakeholders participating in intermodal transport. The evaluation and ranking of the elements of the structure is performed, as well as the selection of the key elements on the basis of which the typical structures of the terminal were defined and their grouping was performed. Based on the extensive research and data collected on over 180 intermodal terminals in Europe, a selection of efficient typical structures was carried out. On the basis of identified connections between the elements of the terminal structure and their efficiency, modeling of potential terminal structures and estimation of their efficiency was performed. An analysis of the intermodal terminal location and the selection of the subsystem technology, as the elements of the terminal structure which were not selected as the key ones, but have a significant impact on the intermodal terminal structures, is also made..

Metai ir dienos. VGTU 2017 m.

Leidinyje aprašomi VGTU 2017 metų svarbiausieji įvykiai, mokslo ir studijų plėtotė, tarptautinis bendradarbiavimas, dalyvavimas tarptautinėse konferencijose, senato ir rektorato priimti spren­dimai ir kt. Taip pat pateikiama žinių apie universiteto padalinius: fakultetus, katedras, centrus, institutus ir kt. Leidinys skirtas plačiajai visuomenei