Search results for " priority"
showing 10 items of 71 documents
Un maître supplémentaire dans la classe. Quels effets sur les progressions au cycle III ?
2004
To try and reduce school achievement discrepancies at primary school, an original set of actions has been conceived and implemented in the area of Haute Marne. The idea is to provide primary schools in Education Priority Areas with an extra teacher, thus making it possible for the "cycle 3" teachers to occasionally split up the class into groups in order to give special attention to underachieving pupils. This article accounts for the results of an evaluation of the effects of this set of actions on the progression of children in French and maths in "cycle 3". The plan of actions, with the present lay out at least, doesn't seem to meet the set targets : the underachieving children dealt wit…
Judicial challenge of collective dismissals: Special reference to workers¿ selection criteria
2021
En el presente estudio se analiza el sistema de impugnación judicial del despido colectivo, con una especial referencia a las cuestiones atinentes a la afectación de los trabajadores, como consecuencia de la aplicación de los conocidos como criterios de selección, así como el juego de las reglas de prioridad de permanencia. Se analizan todas las vías y motivos de impugnación que tienen los trabajadores afectados por el despido colectivo, tanto en la vertiente colectiva como en la individual In this work, the system of judicial challenge forcollective dismissalsis analysed, with a special reference to issues related to affectedworkers, as a consequence of the application of the so-called sel…
A new list and prioritization of wild plants of socioeconomic interest in Italy: toward a conservation strategy
2021
Wild harvested plants (WHP) and crop wild relatives (CWR), part of the segment of natural diversity that is collectively known as ‘Plant Genetic Resources’, have great socioeconomic importance for humans because they are used either directly or in crop breeding. In order to lay down a solid base for constructing conservation strategies for Italy, an updated annotated list of CWR and WHP was produced for the country including information on known uses. Taxa included in the list were then prioritized using a pragmatic approach based on their value, native status, and need of protection or monitoring.
Ureteral Stones: Shockwave Lithotripsy or Ureteroscopy, Which is Best?
2021
Background Renal stone disease is common and can cause emergency presentation with acute pain due to ureteric colic. International guidelines have stated the need for a multicentre randomised controlled trial (RCT) to determine whether a non-invasive outpatient (shockwave lithotripsy [SWL]) or surgical (ureteroscopy [URS]) intervention should be the first-line treatment for those needing active intervention. This has implications for shaping clinical pathways. Objective To report a pragmatic multicentre non-inferiority RCT comparing SWL with URS. Design, setting, and participants This trial tested for non-inferiority of up to two sessions of SWL compared with URS as initial treatment for ur…
Looking for the best modes helps solving the MRCPSP/max
2013
The multi-mode resource-constrained project scheduling problem with minimum and maximum time lags MRCPSP/max is a very general project scheduling problem with multiple execution modes per activity, renewable and non-renewable resources and minimum and maximum time lags between activities. In this paper, we describe SA-EVA, an algorithm for the problem. SA-EVA first searches for the best mode for each activity, without considering renewable resources. In this phase a simulated annealing is applied. Once a mode vector has been chosen, the problem reduces to the RCPSP/max, which SA-EVA solves with EVA, an algorithm designed in Ballestin et al. [2009. An evolutionary algorithm for the resource-…
Approximation algorithm for constrained coupled-tasks scheduling problem
2014
International audience; We tackle the makespan minimization coupled-tasks problem in presence of compatibility constraints. In particular, we focus on stretched coupled-tasks, i.e. coupled-tasks having the same sub-tasks execution time and idle time duration. In such context, we propose some complexity results according to several parameters and we design an efficient polynomial-time approximation algorithm.
An approximate/exact objective based search technique for solving general scheduling problems
2018
Abstract In this paper, we analyze single machine scheduling problems under the following minimization objectives: the maximum completion time (makespan), the total completion time and the maximum lateness, including fundamental practical aspects, which often occur in industrial or manufacturing reality: release dates, due dates, setup times, precedence constraints, deterioration (aging) of machines, as well as maintenance activities. To solve the problems, we propose an efficient representation of a solution and a fast neighborhood search technique, which calculates an approximation of criterion values in a constant time per solution in a neighborhood. On this basis, a novel approximate/ex…
Two Job Cyclic Scheduling with Incompatibility Constraints
2001
The present paper deals with the problem of scheduling several repeated occurrences of two jobs over a finite or infinite time horizon in order to maximize the yielded profit. The constraints of the problem are the incompatibilities between some pairs of tasks which require a same resource.
Time and work generalised precedence relationships in project scheduling with pre-emption: An application to the management of Service Centres
2012
Abstract In this paper we present an application of project scheduling concepts and solution procedures for the solution of a complex problem that comes up in the daily management of many company Service Centres. The real problem has been modelled as a multi-mode resource-constrained project scheduling problem with pre-emption, time and work generalised precedence relationships with minimal and maximal time lags between the tasks and due dates. We present a complete study of work GPRs which includes proper definitions, a new notation and all possible conversions amongst them. Computational results that show the efficiency of the proposed hybrid genetic algorithm and the advantages of allowi…
Exact Response Time Analysis of Hierarchical Fixed-Priority Scheduling
2009
Hierarchical scheduling has recently been used to provide temporal isolation to embedded virtualised systems. Response time analysis is a common way to derive a schedulability test for these systems. This paper points out that response time analysis for hierarchical fixed-priority scheduling found in the literature is only exact for tasks of the highest priority domain. For the rest of the tasks is an upper bound. In our work, we provide the exact analysis and we compare it with previously published works.