Design of tuning bandwidth and linearity for VCO by mathematical solution and computer method

SIMULATION OF A SEA CARGO PORT AS A QUEUING SYSTEM IN ANYLOGIC

the System analysis and logistics ◽

10.31799/2007-5687-2020-4-59-66 ◽

2020 ◽

Vol 4 (26) ◽

pp. 59-66

Author(s):

A. G. Morozkov ◽

◽

M. R. Yazvenko ◽

Keyword(s):

Simulation Model ◽

Key Words ◽

Simulation Modeling ◽

Queue Length ◽

System Simulation ◽

Queuing System ◽

System Model ◽

System Capacity ◽

Mathematical Solution ◽

Structure Simulation

The article presents simplified queuing system model of freight marine port. The article discusses the basic elements of queuing system, its mathematical solution and structure. Simulation model was created using AnyLogic to analyze an effect of system capacity on queue length. The results were analyzed and the solution for queue optimization was proposed. Key words: queuing system, simulation modeling, AnyLogic, marine port, servers, queue.

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Mechanism of the propagation step in the anionic polymerization of styrene

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19801047 ◽

1980 ◽

Vol 45 (4) ◽

pp. 1047-1055 ◽

Cited By ~ 2

Author(s):

Miroslav Kašpar ◽

Jiří Trekoval

Keyword(s):

Experimental Data ◽

Induction Period ◽

Anionic Polymerization ◽

Reactive Intermediate ◽

Coordination Polymerization ◽

Kinetic Dependence ◽

Mathematical Solution ◽

Slow Reaction

The paper is dealing with an investigation of the kinetic dependence of the propagation step in the anionic coordination polymerization of styrene in benzene at 303 K with "living" oligostyryllithium as initiator at the onset of the reaction. A short but distinct induction period was found, indicating a preceding slow reaction leading to the formation of a reactive intermediate, which behaves as the initiator of the reaction. Using results obtained in the first paper of this series, a new mechanism of propagation has been suggested, the mathematical solution of which is correlated with experimental data.

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Optimizing preventive maintenance over a finite planning horizon in a semi-Markov framework

IMA Journal of Management Mathematics ◽

10.1093/imaman/dpaa026 ◽

2020 ◽

Author(s):

Antonio Sánchez Herguedas ◽

Adolfo Crespo Márquez ◽

Francisco Rodrigo Muñoz

Keyword(s):

Preventive Maintenance ◽

Recurrence Relations ◽

Direct Calculation ◽

Planning Horizon ◽

Practical Implementation ◽

Practical Application ◽

Mathematical Solution ◽

Accumulated Reward ◽

Finite Planning Horizon

Abstract This paper describes the optimization of preventive maintenance (PM) over a finite planning horizon in a semi-Markov framework. In this framework, the asset may be operating, and providing income for the asset owner, or not operating and undergoing PM, or not operating and undergoing corrective maintenance following failure. PM is triggered when the asset has been operating for τ time units. A number m of transitions specifies the finite horizon. This system is described with a set of recurrence relations, and their z-transform is used to determine the value of τ that maximizes the average accumulated reward over the horizon. We study under what conditions a solution can be found, and for those specific cases the solution τ* is calculated. Despite the complexity of the mathematical solution, the result obtained allows the analyst to provide a quick and easy-to-use tool for practical application in many real-world cases. To demonstrate this, the method has been implemented for a case study, and its accuracy and practical implementation were tested using Monte Carlo simulation and direct calculation.

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A hybrid computer method for the analysis of time dependent river pollution problems

10.1145/1476936.1476947 ◽

1970 ◽

Cited By ~ 2

Author(s):

R. Vichnevetsky ◽

Allan W. Tomalesky

Keyword(s):

River Pollution ◽

Computer Method ◽

Time Dependent ◽

Hybrid Computer

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Mathematical solution for controlled drug release from a swelling hydrogel to the small intestine

10.1063/1.5121074 ◽

2019 ◽

Author(s):

Amanina Setapa ◽

Shalela Mohd Mahali ◽

Ummu ‘Atiqah Mohd Roslan ◽

Nur Fadhilah Ibrahim

Keyword(s):

Small Intestine ◽

Drug Release ◽

Controlled Drug Release ◽

Mathematical Solution

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Tackling Means for Balancing the Production Lines

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.4620 ◽

2011 ◽

Vol 383-390 ◽

pp. 4620-4628

Author(s):

Olga Ioana Amariei ◽

Codruţa Oana Hamat ◽

Liviu Coman ◽

Cristian Fănică ◽

Cristian Rudolf

Keyword(s):

Production Line ◽

Idle Time ◽

Computer Method ◽

Basic Method ◽

Assembly Lines ◽

Production Lines ◽

Heuristic Techniques ◽

Human Operators

Balancing a production line means to organize the activity of the human operators, to establish the production flux and designing the line, minimizing the idle time for the machines and the operators, through an optimal charge bestowed upon them. WinQSB software offers three methods of solving this type of problem, namely: heuristic techniques (a basic method is specified and an alternative one from all the available ones), Optimizing Best Bud Search and Computer Method of Sequencing Operations for Assembly Lines, presented all in the present paper.

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