[EN] Industrial production scheduling problems are challenges that researchers have been trying to solve for decades. Many practical scheduling problems such as the hybrid flowshop are ATP-hard. As a result, researchers ...
[EN] The mixed no-idle flowshop scheduling problem arises in modern industries including integrated circuits, ceramic frit and steel production, among others, and where some machines are not allowed to remain idle between ...
Yepes-Borrero, Juan C.; Perea, Federico; Ruiz García, Rubén; Villa Juliá, Mª Fulgencia(Elsevier, 2021-07-16)
[EN] We present a bi-objective parallel machine scheduling problem with machine and job sequence dependent setup times, with the additional consideration of resources needed during setups. The availability of such resources ...
Li, Xiaoping; Qian, L.; Ruiz García, Rubén(Institute of Electrical and Electronics Engineers, 2018-03)
[EN] Allocating service capacities in cloud computing is based on the assumption that they are unlimited and can be used at any time. However, available service capacities change with workload and cannot satisfy users' ...
This paper deals with a realistic cyclic scheduling problem in the food industry environment in which
parallel machines are considered to process perishable jobs with given release dates, due dates and
deadlines. Jobs ...
[EN] Workers still perform the bulk of operations in the manufacturing industry. The consideration of the assignment of workers and the reduction of ergonomic risks in U-shaped assembly lines is of paramount importance. ...
Rodríguez Villalobos, Alejandro(Editorial Universitat Politècnica de València, 2012-04-17)
Esta Tesis Doctoral demuestra que la realidad de las redes de transporte que caracterizan los problemas de rutas reales de las empresas, es muy compleja y asimétrica; y esto queda reflejado en las matrices de distancias ...
Almost all manufacturing facilities need to use production planning and scheduling systems to increase productivity and to reduce production costs. Real-life production operations are subject to a large number of unexpected ...
Xu, Haiyan; Li, Xiaoping; Ruiz García, Rubén; Zhu, Haihong(Institute of Electrical and Electronics Engineers, 2021-05)
[EN] In this paper, we consider single-machine group scheduling with nonperiodical maintenance and deteriorating effects. Nonperiodical maintenance, which has unfixed maintaining interval or the number of jobs in each group ...
Framiñan Torres, José Manuel; Ruiz García, Rubén(Taylor & Francis: STM, Behavioural Science and Public Health Titles, 2012)
It has frequently been stated that there exists a gap between production scheduling theory and practice. In order to put theoretical findings into practice, advances in scheduling models and solution procedures should be ...
Urlings ., Thijs(Universitat Politècnica de València, 2010-07-16)
Due to the current trends in business as the necessity to have a large catalogue of products, orders that increase in frequency but not in size, globalisation and a market that is increasingly competitive, the production ...
We consider a Distributed Assembly Permutation Flowshop Scheduling Problem with sequence dependent setup times and the objective of makespan minimization. The problem consists of two stages, production and assembly. The ...
Task scheduling has a significant impact on the performance of the MapReduce computing
framework. In this paper, a scheduling problem of periodical batch jobs with makespan minimization
is considered. The problem is ...
HE, XIAO FENG(Universitat Politècnica de València, 2016-03-11)
[EN] Nowadays, in order to enhance competitiveness, there is a large amount of companies offering logistics services to their customers. However, these companies are all facing the same challenge of distributing products ...
Chen, Long; Li, Xiaoping; Guo, Yucheng; Ruiz García, Rubén(Institute of Electrical and Electronics Engineers (IEEE), 2021-09)
[EN] In cloud computing, reserved and on-demand instances are generally provided by service providers. Hybridization of the two alternatives can considerably save costs when renting resources from the cloud. However, it ...
[EN] Complex workflow applications are widely used in scientific computing and economic analysis, which commonly include both preemptive and non-preemptive tasks. Cloud computing provides a convenient way for users to ...
[EN] The performance of shipping companies greatly depends on reduced berthing times. The trend towards bigger ships and shorter berthing times places severe stress on container terminals, which cannot simply increase the ...
[EN] Large manufacturing firms operate more than one production center. As a result, in relation to scheduling problems, which factory manufactures which product is an important consideration. In this paper we study an ...
[EN] In practice due dates usually behave more like intervals rather than specific points in time. This paper studies hybrid flowshops where jobs, if completed inside a due window, are considered on time. The objective is ...
Flowshop scheduling is a very active research area. This problem still attracts a considerable amount of interest despite the sheer amount of available results. Total flowtime minimization of a flowshop has been actively ...