1,720,965 research outputs found
A decision support system for surgery sequencing at UZ Leuven's day-care department
No full textIn this paper, we test the applicability of a decision support system (DSS) that is developed to optimize the sequence of surgeries in the day-care center of the UZ Leuven Campus Gasthuisberg (Belgium). We introduce a multi-objective function in which children and prioritized patients are scheduled as early as possible on the day of surgery, recovery overtime is minimized and recovery workload is leveled throughout the day. This combinatorial optimization problem is solved by applying a pre-processed mixed integer linear programming model. We report on a 10-day case study to illustrate the performance of the DSS. In particular, we compare the schedules provided by the hospital with those that are suggested by the DSS. The results indicate that the DSS leads to both an increased probability of obtaining feasible schedules and an improved quality of the schedules in terms of the objective function value. We further highlight some of the major advantages of the application, such as its visualization and algorithmic performance, but also report on the difficulties that were encountered during the study and the shortcomings that currently delay its implementation in practice, as this information may contribute to the success rate of future software applications in hospitals.sponsorship: The authors would like to thank the reviewers for the constructive comments and their help in improving the paper. They also thank Pierre Luysmans, Annegret Van Gool, Katrien Vromman, and Werner Aerts of the UZ Leuven for their cooperation during the development of the decision support system and the validation of the case study data. Their suggestions and experience contributed to the practical value of this research. The authors acknowledge the support given to this project by the Fonds voor Wetenschappelijk Onderzoek - Vlaanderen as Aspirant (Brecht Cardoen). (Fonds voor Wetenschappelijk Onderzoek - Vlaanderen)status: Publishe
Op weg naar een duurzame gezondheidszorg in België
No full textHet centrale thema van de 9de Vlerick Healthcare Conference, die plaats vond op 27 oktober 2022, was duurzaamheid in de gezondheidszorg. De nieuwste inzichten uit de academische en professionele wereld werden gedeeld in een bruisende, interactieve setting met plenaire lezingen en thematische sessies. Professor Brecht Cardoen (Vlerick Healthcare Management Centre), researcher Esther Van Haute en Julie Leblanc (Vlerick Alumni Healthcare Club) blikken terug
Flexibel werken in ziekenhuizen: Over werklast, draagkracht en verandercultuur
No full textMet schaarse middelen toch optimaal beantwoorden aan de toenemende zorgvraag, zonder dat het zorgpersoneel eronderdoor gaat: hoe doe je dat? Flexibiliteit kan alvast helpen, stellen prof. Brecht Cardoen, prof. Paul Gemmel en onderzoekster Lies Schoonaert, mede-auteurs van het MINOZ-rapport Flexibel werken in ziekenhuizen
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Optimizing a multiple objective surgical case sequencing problem
No full textThis paper studies a multi-objective combinatorial optimization problem in which the sequence of patients within the operating rooms of a freestanding ambulatory surgical center has to be determined. We show that the optimization problem is NP-hard and we develop some mixed integer linear programming solution approaches, which are either exact or heuristic in nature, to facilitate the decision process of the operating room scheduler. We gathered data from the UZ Leuven Campus Gasthuisberg (Belgium) to develop a structured but artificial test set and introduced the 224 instances to evaluate and compare the computational performance of the algorithmic approaches. Since the focus of this paper is directed towards the development and the computational testing of the solution procedures, we only briefly document on some case study results with real data.sponsorship: We would like to thank the reviewer for the constructive comments and the help in improving the paper. We are grateful to Pierre Luysmans of the UZ Leuven for introducing this practical scheduling problem and providing the data in order to build the test set. His suggestions and experience contributed to the practical value of this research. We acknowledge the support given to this project by the Bijzonder Onderzoeksfonds of the Katholieke Universiteit Leuven (Brecht Cardoen) and by the Fonds voor Wetenschappelijk Onderzoek - Vlaanderen as Aspirant (Brecht Cardoen) and as Post-doctoral researcher (Jeroen Belien). (Katholieke Universiteit Leuven, Fonds voor Wetenschappelijk Onderzoek - Vlaanderen as Aspirant)status: Publishe
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
A DECISION SUPPORT SYSTEM FOR SURGERY SEQUENCING AT UZ LEUVEN'S DAY-CARE DEPARTMENT
No full textIn this paper, we test the applicability of a decision support system (DSS) that is developed to optimize the sequence of surgeries in the day-care center of the UZ Leuven Campus Gasthuisberg (Belgium). We introduce a multi-objective function in which children and prioritized patients are scheduled as early as possible on the day of surgery, recovery overtime is minimized, and recovery workload is leveled throughout the day. This combinatorial optimization problem is solved by applying a pre-processed mixed integer linear programming model. We report on a 10-day case study to illustrate the performance of the DSS. In particular, we compare the schedules provided by the hospital with those that are suggested by the DSS. The results indicate that the DSS leads to both an increased probability of obtaining feasible schedules and an improved quality of the schedules in terms of the objective function value. We further highlight some of the major advantages of the application, such as its visualization and algorithmic performance, and also report on the difficulties that were encountered during the study and the shortcomings that currently delay its implementation in practice, as this information may contribute to the success rate of future software applications in hospitals.Decision support system, optimization, visualization, health care application
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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