Russian Journal of Water Transport最新文献_第2页

The effect of current on the course and speed of a sailing ship 水流对帆船航向和速度的影响

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.443

Vladimir N. Yakovlev

引用次数: 0

Stability and roll angles of the ship at its small finite tilts from different starting positions 飞船从不同起始位置进行小幅度有限倾斜时的稳定性和翻滚角

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.410

Aleksandr N. Kovalev, Fedor N. Kovalev

{"title":"Stability and roll angles of the ship at its small finite tilts from different starting positions","authors":"Aleksandr N. Kovalev, Fedor N. Kovalev","doi":"10.37890/jwt.vi78.410","DOIUrl":"https://doi.org/10.37890/jwt.vi78.410","url":null,"abstract":"The article, within the framework of the acceptability of the metacentric formula, presents a solution to the problem of comparing the stability of the ship, the angles of rotation and the roll angles that it takes while in different starting positions: in a straight state (with the center of gravity (CG) unbiased from the diametrical plane) and with the initial roll angle (with the displaced CG). This comparison is carried out when the following factors affect the ship: the same heeling moment; the rotation of the ship at the same roll angle; the transfer of the same cargo parallel to the deck at the same distance; the inclination of the ship to the same position. The purpose of this comparison is to clearly show that a ship with a displaced CG exhibits better stability within the specified framework than in a straight state. It is shown that the transfer of cargo in any direction from side to side will turn the ship with the initial angle by a smaller angle in the direction of transfer than the same ship in the initial straight state. The exception will be the same transfer, in which the initially cloned ship will restore a straight state or take a roll opposite to the original one. In the first case, the rotation of the ship (relative to the initial roll) will occur at exactly the same angle as when the ship is tilted with an initially straight state, and in the second case - by a larger angle. The materials of the article can be useful in analyzing the behavior of a ship at small roll angles.","PeriodicalId":506761,"journal":{"name":"Russian Journal of Water Transport","volume":" 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Factors for increasing the efficiency of using working time for knowledge workers in water transport 提高水运知识工作者工作时间利用效率的因素

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.459

Renata I. Karavashkina, Yulya R. Guro-Frolova, Elena M. Fedotova

{"title":"Factors for increasing the efficiency of using working time for knowledge workers in water transport","authors":"Renata I. Karavashkina, Yulya R. Guro-Frolova, Elena M. Fedotova","doi":"10.37890/jwt.vi78.459","DOIUrl":"https://doi.org/10.37890/jwt.vi78.459","url":null,"abstract":"Working time is the most valuable resource in the field of production and labor. The effectiveness of its use has always been given special attention not only by economists, but also by sociologists and psychologists. According to labor legislation, working time is the time during which an employee, in accordance with the rules of the internal labor regulations and the terms of the employment contract, must perform labor duties, as well as other periods of time related to the worker. Thus, working time includes not only the time of the main, but also auxiliary work, the time of regulated breaks and some other types of expenses of the working day. \u0000According to research, the loss of working time at domestic enterprises is sufficient. The reasons are: low level of labor organization, violations of labor discipline, and circumstances beyond the control of the employee, for example, poor quality of management function implementation. The elimination of at least unjustified losses of working time, at the existing level of labor organization, can increase the efficiency of domestic enterprises by more than 10%","PeriodicalId":506761,"journal":{"name":"Russian Journal of Water Transport","volume":" 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual current system with a reversible shaft generator as part of a ship's power plant 带可逆轴发电机的双电流系统，作为船舶发电厂的一部分

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.420

Yuriy S. Malyshev, O. A. Burmakin, Sergey V. Popov

引用次数: 0

Modular design of the barge platform 驳船平台的模块化设计

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.407

Stanislav N. Girin Girin

{"title":"Modular design of the barge platform","authors":"Stanislav N. Girin Girin","doi":"10.37890/jwt.vi78.407","DOIUrl":"https://doi.org/10.37890/jwt.vi78.407","url":null,"abstract":"The paper presents the solution of the problem of creating the design of the barge-platform of the \"M-SP 3.5\" class of the Russian Classification Society (RCS), intended for manufacturing outside the shipbuilding and ship-repair enterprise on the prepared site near the water body. Hull assembly should be made of separate parts (modules), which are manufactured in the conditions of shipbuilding production and delivered to the place of assembly by automobile or railway transport. Welding should not be used in the assembly process. It is suggested to assemble the barge hull from flat sections of 12,00×2,40 m and fractional sizes; bolted joints should be used during assembly. An example of barge construction of op-determined dimensions is considered. Calculation of the overall strength of the hull assembled from individual sections by means of bolted joints is performed using the ANSYS program complex. It is shown that the strength of the hull and bolts is ensured for the load regulated by the Rules of RCO. The use of bolted joints in forming the hull makes it difficult to ensure its impermeability, in this connection the buoyancy and non-floodability of the barge is proposed to be ensured by means of flexible tanks filled with air. Design and production of such tanks is currently carried out by a number of companies in the Russian Federation.","PeriodicalId":506761,"journal":{"name":"Russian Journal of Water Transport","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elements of technology for processing and disposal of food waste during the operation of ships 船舶运营期间处理和处置食物垃圾的技术要素

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.458

V. Reshnyak, O. Domnina, Natalia B. Satina

{"title":"Elements of technology for processing and disposal of food waste during the operation of ships","authors":"V. Reshnyak, O. Domnina, Natalia B. Satina","doi":"10.37890/jwt.vi78.458","DOIUrl":"https://doi.org/10.37890/jwt.vi78.458","url":null,"abstract":"This article is devoted to the problem of environmental protection by food waste, which is most relevant for water tourism facilities, as well as small and remote settlements. The authors propose, when solving the problem of food waste, to consider the process of their formation, examining the complete process of existence of food products, taking into account their movement in space and transformations, as a result of which waste is formed. This approach allowed us to establish the main stages of this process – preparation for cooking, preparation, and consumption. It is shown that each of them generates waste in different amounts and of different properties. It is also shown that these factors, in turn, determine the most effective technologies and means of processing and recycling food waste. The authors propose, by managing the amount of waste generated, taking into account the quality, to form technologies and means for recycling and disposal of waste. The advantages of this approach are confirmed by examples of ecological solutions that take into account the formation of waste in the process of food transformation, as well as their movement in space, which simultaneously ensures the availability of different solutions to the waste problem for each specific object, including such as water tourism facilities. The availability of different options for solving the waste problem provides the opportunity to choose the most effective solution in the context of organizing a solution to the problem of food waste.","PeriodicalId":506761,"journal":{"name":"Russian Journal of Water Transport","volume":" 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a mathematical model and algorithm for the sequence of fault detection of the ship's hull 开发船体故障检测序列的数学模型和算法

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.455

Y. Kochnev, Irina B. Kochneva, O. K. Zyablov

{"title":"Development of a mathematical model and algorithm for the sequence of fault detection of the ship's hull","authors":"Y. Kochnev, Irina B. Kochneva, O. K. Zyablov","doi":"10.37890/jwt.vi78.455","DOIUrl":"https://doi.org/10.37890/jwt.vi78.455","url":null,"abstract":"The labor intensity of the hull fault detection process, which generally consists of work performed directly on the vessel and the preparation of the final report, can be reduced through the use of modern methods of computer data analysis. The sequence of measurements of defects on the vessel (residual thicknesses, deformations, cement and other sealings, cracks, holes) can be justified by solving a modified traveling salesman problem, reflecting the optimization of the path between points in space, with the goal function in the form of the spent finite time, which is the sum of the time for performing the measurements themselves, moving between the points of such measurements, various technical works, for example, installing a ladder for access to the area located above human growth and its movement to the right sector of work. The article develops a mathematical model of human motion in the space around the vessel, an algorithm of movement. The adaptation of the genetic algorithm for the problem under consideration is given, including the features of solution coding, crossing and mutation of solutions, and choosing the best option. The results of the test debugging simulation for the bow of the river pusher hull showed the operability of the developed algorithm and the possibility of its application for research and practical tasks.","PeriodicalId":506761,"journal":{"name":"Russian Journal of Water Transport","volume":" 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of the relationships between the technical and economic characteristics of river cargo ships during operational and economic feasibility studies 在运营和经济可行性研究中研究内河货船的技术和经济特征之间的关系

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.457

Alexander J. Platov, Juri I. Platov

引用次数: 0

Specifics of application of requirements of International code on safety of high-speed craft to small craft 将《国际高速船安全准则》的要求适用于小型船只的具体情况

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.466

Albert G. Nazarov

引用次数: 0

Experience analysis of automation and robotization of the container terminal operation 集装箱码头作业自动化和机器人化的经验分析

Russian Journal of Water Transport Pub Date : 2024-03-20 DOI: 10.37890/jwt.vi78.439

E. E. Petrova, V. V. Gannesen

{"title":"Experience analysis of automation and robotization of the container terminal operation","authors":"E. E. Petrova, V. V. Gannesen","doi":"10.37890/jwt.vi78.439","DOIUrl":"https://doi.org/10.37890/jwt.vi78.439","url":null,"abstract":"The paper reviews the existing approaches to automation of both transshipment equipment and technological operations performed at container terminals. It is pointed out that automation and robotization of warehousing and port operational processes is one of the current global trends in the development of cargo transshipment and temporary storage technologies at seaport berths. Therefore, the search, accumulation and systematization of a lot of information about practical developments in this area of transport industry is one of the scientific tasks in choosing the direction of the dissertation research \"Technology, arrangement and management of transshipment processes in ports\". On the basis of the studied domestic and foreign experience in the field of arrangement of the management system of the sea container terminal the operational processes in which the object of automation was transshipment technology were classified. The unification of individual methods of automation of operational processes into groups (levels of automation) was made on the basis of the classification criteria \"the number of automated equipment units \". Unstructured data presented as primary source information on the websites of manufacturers of transshipment equipment, as well as secondary open scientific data were the sources of information for the scientific research.","PeriodicalId":506761,"journal":{"name":"Russian Journal of Water Transport","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0