5 articles for “Vacation”

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Research ArticleOpen accessEvery word in the titleMathematical Analysis of M/M/C Vacation Queueing Model with a Waiting Server and Impatient CustomersGanesh Sapkota, R. P. GhimireIn this study, the transient analysis of the M/M/C queueing system has been made under the provision of servers' single vacation and loss of impatient customers. Customers arrive in the system in the Poisson process and are served by multiple servers in an exponential distribution process. Customers are served in the chronological order of their arrival. The main purpose of … …Journal of Mathematics and Statistics, Vol. 18, Issue 1 · 19 Apr 2022 · 7,780 accessesView PDF Cite

Research ArticleOpen accessEvery word in the titleA Complex Multi-State System with Vacations in the RepairJuan Eloy Ruiz-CastroA complex multi-state system subject to wear failure and given preventive maintenance is considered. Various internal levels of degradation are assumed. The repair facility is composed of a repairperson, who may take one or more vacations during the period considered. A policy is established for the repairperson’s vacation time. Two types of task may be performed by the repairperson: corrective … …Journal of Mathematics and Statistics, Vol. 15, Issue 1 · 5 Sep 2019 · 7,293 accessesView PDF Cite

Research ArticleOpen accessIn the abstractManagement of Renewable Energies and Environmental ProtectionRelly Victoria Virgil Petrescu, Raffaella Aversa, Antonio Apicella et al.The purpose of this project is to present an overview of renewable energy sources, major technological developments and case studies, accompanied by applicable examples of the use of sources. Renewable energy is the energy that comes from natural resources: The wind, sunlight, rain, sea waves, tides, geothermal heat, regenerated naturally, automatically. Greenhouse gas emissions pose a serious threat to climate … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 4 · 23 Nov 2017 · 8,113 accessesView PDF Cite

Research ArticleOpen accessIn the abstractThe Modern FlightRelly Victoria Petrescu, Florian Ion Tiberiu Petrescu, Antonio Apicella et al.A modern flight involves both a great flight quality and high safety throughout. You can’t speak of a quality of flight today unless it provides increased comfort to all passengers in full safety and relaxation. Regardless of the aircraft design type, a minimum level of comfort is required in the passenger cabin so that they feel safe, comfortable, quiet, plus … …Journal of Aircraft and Spacecraft Technology, Vol. 1, Issue 4 · 19 Oct 2017 · 8,324 accessesView PDF Cite

Research ArticleOpen accessIn the abstractThe Inverse Kinematics of the Plane System 2-3 in a Mechatronic MP2R System, by a Trigonometric MethodRelly Victoria Virgil Petrescu, Raffaella Aversa, Antonio Apicella et al.Robots have penetrated today in almost all industrial fields, being much more precise than humans in the execution of operations, but also faster, more dynamic, more stable and more resilient, working 24 h of the 24 h possible, in any season, breaks, holidays, vacations and especially without getting sick. The most important fact is that they can also perform special … …Journal of Mechatronics and Robotics, Vol. 1, Issue 2 · 20 Dec 2017 · 7,813 accessesView PDF Cite