scholarly journals Simulation of marine vehicles operation in the state of wind and wave conditions

2021 ◽  
pp. 191-199
Author(s):  
А.А. Карпенко
Keyword(s):  
Supply Chain ◽  
Simulation Model ◽  
Transport System ◽  
Wind Wave ◽  
Supply Chain System ◽  
Chain System ◽  
Marine Vehicles ◽  
Marine Transport ◽  
The Impact ◽  
The City

Эксплуатация морского транспорта подвержена влиянию множества факторов, учет которого требует высокой трудоемкости. Как правило, моделирование морских транспортных систем, выступающих в роли связующего звена различных экономических процессов, производится на стадии предпроектной разработки. На этой стадии, помимо прочего, необходимо оценить влияние на проектируемую систему не только детерминированных, но и стохастических процессов. В данной работе описан алгоритм учета влияния ветро-волновых режимов морских участков на эксплуатацию морских транспортных судов. Данный алгоритм реализован на примере модели системы поставок сжиженного природного газа (СПГ) морским транспортом потребителям г. Мурманск. Научной новизной данной работы является комплексный подход к логико-математическому описанию эксплуатации морских транспортных средств. Этот подход включает в себя моделирование эксплуатации судна на базе агентного подхода, моделирование ветро-волновых режимов на основе анализа временных рядов и стохастических экспериментов и определение скорости движения судна на основе эмпирико-статистических формул расчета скорости судна и теории гидродинамики судна. В ходе выполнения данной работы была построена имитационная модель поставок СПГ в г. Мурманск морским транспортом. Результаты прогонов этой модели были верифицированы на основе технико-экономического обоснования АО «ЦНИИМФ». Алгоритм построения имитационной модели, описанный в данной работе, может быть применен для имитационного моделирования морских транспортных систем с различными целями функционирования. Marine transport operation is affected by a lot of factors taking into account of which requires a high laboriousness. In most cases modelling of marine transport operation as a link in various economic processes is performed at the pre-design development stage. By the way, evaluation of the impact of both deterministic and stochastic processes on the designed system is necessary at this stage. Evaluation of transport system efficiency based on pre-formed system of criteria is in progress at this stage. This paper describes an algorithm for modeling the operation of marine vessels taking into account wind-wave regime of sea areas. This algorithm is implemented by the model of liquified natural gas (LNG) supply chain system by marine transport to consumers of the city of Murmansk. Scientific novelty of this paper is a complex approach to logical-mathematical description of marine vehicles exploitation. This approach consists of agent-based simulation of vessel exploitation, modelling of wind-wave regimes by means of time series analysis and stochastic modelling and the speed determination of the vessel movement based on the empirical-statistical formulas for calculating the speed of the vessel and the theory of vessel hydrodynamics. During this research simulation model LNG supply chain system by marine transport to consumers of the city of Murmansk was developed. The results of the model have been verified by the feasibility study performed by CNIIMF JSC. The algorithm for constructing simulation model described in this paper could be implemented in modelling of marine transport system for various purposes.

The Impact of the RFID Technology in the Supply Chain

2013 ◽  
Vol 415 ◽  
pp. 702-707
Author(s):  
Shan Lu ◽  
Xing Yu Wei ◽  
Quan Sheng Lei
Keyword(s):  
Supply Chain ◽  
Simulation Model ◽  
Economic Losses ◽  
Automatic Identification ◽  
Identification System ◽  
Rfid Technology ◽  
Supply Chain System ◽  
Automatic Identification System ◽  
Chain System ◽  
The Impact

Inventory inaccuracy deriving from the distortion of inventory information may possibly result in the stock out in supply chain system, spawning a great number of economic losses. Dealing with this problem, the partners in the supply chain can choose to introduce the advanced automatic identification system. In this paper, considering a three-level supply chain facing stochastic demand and suffering from inventory inaccuracy, we present a simulation model to study the increase of revenue when the supply chain introduces RFID technology. We compare the revenue of the supply chain system in two situations: The first situation deals with the case where the supply chain operates with inaccurate inventory information. In the second situation, RFID technology is introduced to eliminate the inventory inaccuracy. Further, we investigate the benefits of using RFID technology to eliminate the inventory inaccuracy within the supply chain.

scholarly journals IMPACT OF COVID-19 ON SUPPLY CHAIN AND LOGISTICS

2021 ◽  
Vol 57 (9) ◽  
pp. 7118-7124
Author(s):  
Mrs. Aparna Lalitkumar Patil Et. al.
Keyword(s):  
Supply Chain ◽  
Value Chains ◽  
Short Term ◽  
Supply Chain System ◽  
Production Logistics ◽  
Chain System ◽  
Entire World ◽  
Supply Chain Risks ◽  
The City

In early January 2020, coronavirus outbreak started to build up as a pandemic in the city of Wuhan in China, leading to social, human as well as economic disturbance, leaving no life untouched. COVID-19, the coronavirus pandemic impacted the production, logistics as well as the supply chain system in the entire world.  As companies, around the globe are trying to repair their shattered value chains in the short-term and reduce their supply chain risks in the long-term, India also has an exclusive chance to emerge as a business terminus during and after the COVID-19 pandemic.

SIMULATION MODEL FOR SUPPLY CHAIN RELIABILITY EVALUATION / TIEKIMO GRANDINĖS PATIKIMUMO ĮVERTINIMO IMITACINIS MODELIS

2008 ◽  
Vol 14 (3) ◽  
pp. 300-311 ◽  
Author(s):  
Ruslan Klimov ◽  
Yuri Merkuryev
Keyword(s):  
Supply Chain ◽  
Simulation Model ◽  
Risk Evaluation ◽  
Risk Identification ◽  
Supply Chain Risk ◽  
Supply Chain System ◽  
Risk Recognition ◽  
Chain System ◽  
Evaluation Approach ◽  
Simulation Based

This paper investigates problems related to supply chain risk identification and simulation‐ based risk evaluation. Accordingly, the paper is divided into two logical parts. The first part represents earlier researches about risk recognition within the sphere of supply chains. The distinction between terms “uncertainty” and “risk” is discussed. Based on the predefined supply chain functions, additional risks connected with supply chain reliability are recognized. Then, a conception of simulation‐based risk evaluation approach is discussed. Within the second part of the paper, a numerical example is provided, within which a simplified supply chain system is defined and corresponding risk evaluation is performed. Santrauka Šiame straipsnyje nagrinėjamos problemos, susijusios su tiekimo grandinės rizikos identifikavimu ir modeliavimu pagrįstu rizikos įvertinimu. Straipsnis suskaidytas į dvi logines dalis. Pirmojoje dalyje aprašomi ankstesni tiekimo grandinėse slypinčių rizikų tyrimai. Aptariami terminų neapibrėžtumas ir rizika skirtumai. Remiantis pasirinktomis tiekimo grandinės funkcijomis, nustatytos naujos rizikos, kurios veikia tiekimo grandinės patikimumą. Toliau aptariama modeliavimu pagrįsta rizikos įvertinimo koncepcija. Antroje straipsnio dalyje pateiktas skaitmeninis pavyzdys, kuriame sudaroma supaprastinta tiekimo grandinės sistema ir įvertinama su ja susijusi rizika.

MODELING AND COMPLEXITY STUDY OF OUTPUT GAME AMONG MULTIPLE OLIGOPOLISTIC MANUFACTURERS IN THE SUPPLY CHAIN SYSTEM

2013 ◽  
Vol 23 (03) ◽  
pp. 1350038 ◽  
Author(s):  
GUANHUI WANG ◽  
JUNHAI MA
Keyword(s):  
Supply Chain ◽  
Information Asymmetry ◽  
Complex Dynamics ◽  
Great Influence ◽  
Supply Chain System ◽  
Chain System ◽  
Proposed Model ◽  
Adjustment Speed ◽  
The Impact ◽  
Production Decision

Supply chain system is a complex system in which node enterprises play important roles and exert great influence. This paper proposes an output game model among multiple oligopolistic manufacturers under the circumstances of information asymmetry and analyzes the Nash equilibrium in the model. The manufacturers usually base their production decision making on the volume of order from distributors and the production decisions made by other manufacturers. They also suitably adjust the output. If the adjustment speed accelerates, chaos will be caused in the manufacturers' production decision. This paper analyzes the proposed model from a perspective of complex dynamics and discusses the impact of system parameter on the complexity of this discrete chaotic system. The measures to retain chaos among manufacturers are suggested.

scholarly journals Pricing strategy of closed-loop supply chain under disruptions

Filomat ◽  
2016 ◽  
Vol 30 (15) ◽  
pp. 4059-4072 ◽  
Author(s):  
Xiaofeng Xu ◽  
Jiaguo Liu ◽  
Yongli Li ◽  
Xuelong Zhou
Keyword(s):  
Supply Chain ◽  
Closed Loop ◽  
Supply And Demand ◽  
Profit Sharing ◽  
Supply Chain System ◽  
Closed Loop Supply Chain ◽  
Chain System ◽  
Depth Study ◽  
Contract Costs ◽  
The Impact

The aim of this paper is to understand how disruptions effect on closed-loop supply chain, and how to achieve the coordination of closed-loop supply chain under disruptions situation for the whole supply chain system. Design/methodology/approach- This paper analyzed the effect caused by the disruptions of the closed-loop supply chain from both supply and demand , and applied the established margin profits sharing contract to achieve coordination under the disruptions. Findings- From both supply side and demand side, it drew how the disruptions affect the closed-loop supply chain. When the disruptions have less effect on the forward and reverse cost of closed-loop supply chain, the impact of the closed-loop supply chain is controllable; when the disruptions have lager effect on the forward and reverse cost of closed-loop supply chain, the impact of the closed-loop supply chain is uncontrollable. Research limitations/implications- In this paper, the contract costs are ignored for zero. While in actual situation, to maintain the efficient implementation of this contract must spend considerable cost. Sometimes the cost may be too high to become hinder between manufacturers and retailers. This paper also does not make in-depth study on this issue, so it will be further study in the future. Originality/value- This paper also designed a set of differential profit sharing contract based on revenue sharing contract mechanism. The contract is easy to be managed, easy to be operated, making the closed-loop supply chain system can achieve coordination whether in steady state or under disruptions.

scholarly journals A Desk Study on the Impact of Industry 4.0 on the Supply Chain in India

2021 ◽  
Vol 9 (4) ◽  
pp. 367-372
Keyword(s):  
Supply Chain ◽  
Developing Country ◽  
Industry 4.0 ◽  
Large Population ◽  
Development Stage ◽  
Key Factors ◽  
Supply Chain System ◽  
Chain System ◽  
The World ◽  
The Impact

Industry 4.0 can be simply defined asindustrial work with fully automated concepts. It has established a major impact on the supply chain in India. It has not only automated the production sectors but has also upgraded the typical supply chain into a digital one. The digital supply chain enables a population to gain appropriate products with satisfaction. India is introducing itself as a developing country for the last few years. The major importance of industry 4.0 on the supply chain can be easily seen in India. India is the secondhighest populated country in the world, so the digitalsupply chain is acting as a boon for the country, some valuable projects like Digitalization and Make-in- India have reduced the old policies in the manual supply chain system. This paper presents a desk study on how industry 4.0 has enhanced the digital supply chain in India and helping a large population to get rid of the old school supply chain facility. At the end of this discussion, it can be concluded that industry 4.0 or I4 or smart factory plays an important role in key factors that are responsible for the development stage in India.

scholarly journals Research on the Decision-Making Mechanism of Live Commerce Supply Chain Based on Three-Party Evolutionary Game

2021 ◽  
Author(s):  
Jixiao Wu ◽  
Yinghui Wang
Keyword(s):  
Decision Making ◽  
Social Media ◽  
Supply Chain ◽  
Simulation Model ◽  
Evolutionary Game ◽  
Equilibrium Strategy ◽  
Game Model ◽  
Supply Chain System ◽  
Chain System ◽  
Sales Model

With the diversified development of media forms, livestreaming e-commerce has become a new sales model. Unlike the traditional sales model, this paper constructs a three-party game model composed of manufacturers, social media influencers and consumers based on the livestreaming model. It explores the equilibrium strategy selections of each participant in the supply chain system. In analyzing the evolutionary game stability of each participant, this paper obtains the equilibrium strategy and stability factors by analysis of the income and expenditure matrix. It uses the simulation model to analyze reasons for strategy selections of different game participants in the livestreaming e-commerce model. The results show that the strategies of manufacturers, social media influencers and consumers' selections have different impacts on their decision-making mechanism, and man-ufacturers are more sensitive to consumers' active participation in livestreaming e-commerce.

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