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Memory Bandits: Towards the Switching Bandit Problem Best Resolution
No full textInternational audienc
Scheduling Approch to Control the Execution of the Patient Pathway Workflow in the Emergency Department
No full textInternational audienceThe majority of developed countries are interested in enhancing their healthcare information system in order to expect the overcrowding situations and improve the patient quality of care. In this paper, we focus on the patient pathway workflow modeling using the business process management notation (BPMN) graphical language in the adult emergency department (AED). The goal of our work is to identify the dysfunction situations and improve the performance indicators such as the waiting time. The idea is to optimize this criterion using a real-time scheduling algorithm applied simultaneously on each decision point (gateway) of the patient pathway workflow model. The objective of our algorithm is to assign a dynamic priority to the patients according to their health state evolution. In addition, taking into account the uncertainty of patient arrival an adequate a real time scheduling algorithm is proposed. Our approach is tested on a set of real database from the AED of the regional university hospital (RUH) of Lille (in the north of France). We conducted interviews, performed healthcare tasks analysis, and validated results with the AED medical staff. The goal is to have the workflow model as close as possible to the real functioning of the AED. The simulation results show that the average waiting time of the patients at the AED drop by 11% thanks to our approach
On-the-Fly and Incremental Technique for Fault Diagnosis of Discrete Event Systems Modeled by Labeled Petri Nets
No full textIn this paper, we develop an on-the-fly and incremental technique for fault diagnosis of discrete event systems modeled by labeled Petri nets, in order to tackle the combinatorial explosion problem. K-diagnosability, diagnosability, Kmin (the minimum K ensuring diagnosability) and on-line diagnosis are solved on the basis of the on-the-fly and incremental building of two structures, called respectively fault marking graph and fault marking set graph, in parallel. We build on existing results, namely those establishing necessary and sufficient conditions for diagnosability, but we bring mechanisms to make the checking of such conditions potentially more efficient. We show that, in general, analyzing or even building the whole reachability graph is unnecessary to analyze diagnosability and build an on-line diagnoser. Our technique was implemented in a prototype tool called OF-PENDA, and a railway level crossing benchmark is used to make a comparative discussion pertaining to efficiency in terms of time and memory relative to some existing approaches
The FREGAT biobank: a clinico-biological database dedicated to esophageal and gastric cancers
No full textInternational audienceBACKGROUND : While the incidence of esophageal and gastric cancers is increasing, the prognosis of these cancers remains bleak. Endoscopy and surgery are the standard treatments for localized tumors, but multimodal treatments, associated chemotherapy, targeted therapies, immunotherapy, radiotherapy, and surgery are needed for the vast majority of patients who present with locally advanced or metastatic disease at diagnosis. Although survival has improved, most patients still present with advanced disease at diagnosis. In addition, most patients exhibit a poor or incomplete response to treatment, experience early recurrence and have an impaired quality of life. Compared with several other cancers, the therapeutic approach is not personalized, and research is much less developed. It is, therefore, urgent to hasten the development of research protocols, and consequently, develop a large, ambitious and innovative tool through which future scientific questions may be answered. This research must be patient-related so that rapid feedback to the bedside is achieved and should aim to identify clinical-, biological- and tumor-related factors that are associated with treatment resistance. Finally, this research should also seek to explain epidemiological and social facets of disease behavior.METHODS : The prospective FREGAT database, established by the French National Cancer Institute, is focused on adult patients with carcinomas of the esophagus and stomach and on whatever might be the tumor stage or therapeutic strategy. The database includes epidemiological, clinical, and tumor characteristics data as well as follow-up, human and social sciences quality of life data, along with a tumor and serum bank.DISCUSSION : This innovative method of research will allow for the banking of millions of data for the development of excellent basic, translational and clinical research programs for esophageal and gastric cancer. This will ultimately improve general knowledge of these diseases, therapeutic strategies and patient survival. This database was initially developed in France on a nationwide basis, but currently, the database is available for worldwide contributions with respect to the input of patient data or the request for data for scientific projects.TRIAL REGISTRATION : The FREGAT database has a dedicated website ( www.fregat-database.org ) and is registered on the Clinicaltrials.gov site, number NCT 02526095 , since August 8, 2015
Violence within the organizations of health and medico-social sector. A comparative analysis of France and Romania
No full textInternational audienceViolence at work is a social problem at internationally level andaccording to the WHO (2002) is a global challenge. In the health and medico-socialsector, there are more and more strongly political, institutional and professionalpreoccupations. This is the case in France and Romania. However, the figures thatcover this phenomenon in each of these two countries are they identical? Thus acomparison we envision. The purpose of this communication is to lay the theoreticaland methodological framework of the comparison, stating the segments studied,after identifying possible national peculiarities in the way of understanding theviolence in the health and medico-social sector. To avoid falling into the trap ofethnocentrism, we choose to build a definition of violence from we start, not predefinedcategories, but the experience of the individual, in this case, healthcareworkers, which will be the focus of this comparative research. The thesis will betested as follows: the experience of violence for health professionals is related to thespecificities of the organization (which requires social work reports) and the servicerelationship (which leads to analyze relations between users and professionals)whose transformations are specific to each national context. To understand theexperience of healthcare workers and in coherence with the epistemologicalapproach taken, we shall realize a victimization survey asking respondents what theyare experiencing as violence in the exercise of their profession. Violence will beanalyzed, not in a decontextualized manner of pre-defined categories, but from thequalifications made by the respondents. The data analysis will us allow tocharacterize the figures of violence in each of these national contexts and identify, ifany, social regularities similar in both countries
Consensus for the fractional-order double-integrator multi-agent systems based on the sliding mode estimator
No full textInternational audienc
Leaderless consensus for the fractional-order nonlinear multi-agent systems under directed interaction topology
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Characterizing Finger Pitch and Roll Orientation During Atomic Touch Actions
No full textInternational audienceAtomic interactions in touch interfaces, like tap, drag, and flick, are well understood in terms of interaction design, but less is known about their physical performance characteristics. We carried out a study to gather baseline data about finger pitch and roll orientation during atomic touch input actions. Our results show differences in orientation and range for different fingers, hands, and actions, and we analyse the effect of tablet angle. Our data provides designers and researchers with a new resource to better understand what interactions are possible in different settings (e.g. when using the left or right hand), to design novel interaction techniques that use orientation as input (e.g. using finger tilt as an implicit mode), and to determine whether new sensing techniques are feasible (e.g. using fingerprints for identifying specific finger touches)
Introducing Transient Gestures to Improve Pan and Zoom on Touch Surfaces
No full textInternational audienceDespite the ubiquity of touch-based input and the availability of increasingly computationally powerful touchscreen devices, there has been comparatively little work on enhancing basic canonical gestures such as swipe-to-pan and pinch-to-zoom. In this paper, we introduce transient pan and zoom, i.e. pan and zoom manipulation gestures that temporarily alter the view and can be rapidly undone. Leveraging typical touchscreen support for additional contact points, we design our transient gestures such that they co-exist with traditional pan and zoom interaction. We show that our transient pan-and-zoom reduces repetition in multi-level navigation and facilitates rapid movement between document states. We conclude with a discussion of user feedback, and directions for future research
Is there a ‘pig cycle’ in the labour supply of doctors? How training and immigration policies respond to physician shortages
No full textInternational audienceMany OECD countries are faced with the considerable challenge of a physician shortage. This paper investigates the strategies that OECD governments adopt and determines whether these policies effectively address these medical shortages. Due to the amount of time medical training requires, it takes longer for an expansion in medical school capacity to have an effect than the recruitment of foreign-trained physicians. Using data obtained from the OECD (2014) and Bhargava et al. (2011), we constructed a unique country-level panel dataset that includes annual data for 17 OECD countries on physician shortages, the number of medical school graduates and immigration and emigration rates from 1991 to 2004. By calculating panel fixed-effect estimates, we find that after a period of medical shortages, OECD governments produce more medical graduates in the long run but in the short term, they primarily recruit from abroad; however, at the same time, certain practising physicians choose to emigrate. Simulation results show the limits of recruiting only abroad in the long term but also highlight its appropriateness for the short term when there is a recurrent cycle of shortages/surpluses in the labour supply of physicians (pig cycle theory)