نتایج جستجو برای: scheduling loading and unloading operations

تعداد نتایج: 16860611  

2007
Derya Eren Akyol Özlem Uzun Araz

The objective of this study is to develop a neural network based decision support system for selection of appropriate dispatching rules for a real-time manufacturing system, in order to obtain the desired performance measures given by a user, at different scheduling periods. A simulation experiment is integrated with a neural network to obtain the multi-objective scheduler, where simulation is ...

2017
Yusuke Hirayama Ryosuke Nakanishi Noriaki Maeshige Hidemi Fujino

Physical inactivity leads to muscle atrophy and capillary regression in the skeletal muscle. Intermittent loading during hindlimb unloading attenuates the muscle atrophy, meanwhile the capillary regression in the skeletal muscle is not suppressed. Nucleoprotein has antioxidant capacity and may prevent capillary regression. Therefore, we assessed the combined effects of intermittent loading with...

Journal: :Stud. Inform. Univ. 2011
Mourad Boudhar Nacira Chikhi

We present a scheduling problem of the flow-shop type. We introduce a transportation system: robot or conveyor. This transportation system is also involved in machine loading and unloading. The studied workshop consists of two machines and a conveyor that must process a set of tasks. Tasks having just been executed wait for the conveyor to be transported. The objective is to determine a feasibl...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم ریاضی و مهندسی کامپیوتر 1392

heuristics are often used to provide solutions for flow shop scheduling problems.the performance of a heuristic is usually judged by comparing solutions and run times on test cases.this investigation proposes an analytical alternative ,called asymptotic convergence ,which tests the convergence of the heuristic to a lower bound as problem size grows. the test is a stronger variation of worst cas...

Journal: :Signals 2022

Being the main pillar in context of Industry 4.0, Internet Things (IoT) leads evolution towards a smarter and safer planet. human-centered, rather than machine-centered, as was case wireless sensor networks used industry for decades, IoT may enhance human intelligence with situational awareness, early warning, decision support tools. Focusing on air cargo transportation, “INTELLICONT” project p...

mohammad Saidi Mehrabad parviz Fattahi,

In this paper, a new approach to overlapping operations in job shop scheduling is presented. In many job shops, a customer demand can be met in more than one way for each job, where demand determines the quantity of each finished job ordered by a customer. In each job, embedded operations can be performed due to overlapping considerations in which each operation may be overlapped with the other...

Journal: :journal of computational applied mechanics 0
aliasghar ataee هیات علمی saeed farahmand islamic azad university, karaj branch

in this paper, the effect of autofrettage process parameters on the ultimate pressure that functionally graded spherical vessel can tolerate are investigated. fgm properties and autofrettage pressure are considered as important parameters. assumptions are variation of properties of fgm in radial direction, the residual stress in the absence of bauschinger effect with the operation of variable m...

Nowadays acoustic emission (AE) testing based on the Kaiser Effect (KE) is increasingly used to estimate the in-situ stress in laboratories. In this work, this effect is assessed on cylindrical specimens in numerical simulations of the cyclic loadings including loading, unloading, and re-loading cycles using a 3D code called the particle flow code (PFC) based upon the distinct element method. T...

Journal: :Computers & OR 2015
Agostinho Agra Marielle Christiansen Alexandrino Delgado Lars Magnus Hvattum

This paper describes a stochastic short sea shipping problem where a company is responsible for both the distribution of oil products between islands and the inventory management of those products at consumption storage tanks located at ports. In general, ship routing and scheduling is associated with uncertainty in weather conditions and unpredictable waiting times at ports. In this work, both...

2005
Luigi Moccia Jean-François Cordeau Manlio Gaudioso Gilbert Laporte

The quay crane scheduling problem consists of determining a sequence of unloading and loading movements for cranes assigned to a vessel, in order to minimize the vessel completion time as well as the crane idle times. Idle times originate from interferences between cranes since these roll on the same rails and a minimum safety distance must be maintained between them. The productivity of contai...

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