scholarly journals Actual utilisation of maximum line speed - Polish and Ukrainian experience

2019 ◽  
Vol 294 ◽  
pp. 04001
Author(s):  
Andrzej Massel
Keyword(s):  
Rolling Stock ◽  
Technical Equipment ◽  
Correlation Ratio ◽  
Long Distance ◽  
Line Speed ◽  
Railway Infrastructure ◽  
Average Maximum ◽  
Research Show ◽  
Selection Of

The overall condition of the Polish railway infrastructure has been recently improved. The condition of railway infrastructure and the level of its technical equipment are reflected in the maximum train speeds allowed on particular sections of railway lines. The analysis covers the utilisation of the maximum line speed by the long-distance trains in Poland in the 2018/2019 timetable. The database has been prepared, covering start-to-stop runs of Express Intercity Premium (EIP) trains). The analysis shows that typical value of speed utilisation ratio for EIP trains operated with ED250 EMU is approximately 0.82-0.83. The correlation ratio between the average maximum line speed and the train commercial (startto-stop) speed is rather good. The data from the Polish railways have been compared with Ukrainian ones. The results of the research show clearly, that the selection of passenger rolling stock for particular route can have significant impact on its day-to-day operation.

scholarly journals Technical parameters of high speed lines as the determinant for selection of rolling stock

2018 ◽  
Vol 180 ◽  
pp. 06007
Author(s):  
Jan Raczyński
Keyword(s):  
High Speed ◽  
Point Of View ◽  
Rolling Stock ◽  
High Speed Rail ◽  
Technical Parameters ◽  
Rail Vehicle ◽  
Railway Infrastructure ◽  
The One ◽  
Selection Of

Choosing a high-speed rail vehicle depends on many factors. On the one hand, there are requirements for ensuring the quality of service for passengers, on the other hand, there are constraints resulting from the parameters of available infrastructure. Also a relation of the benefit and financial costs associated with the purchase and the operation of rolling stock is essential. Technical characteristics of vehicles selected for operating a particular system is a compromise between the three groups of requirements. In this article technical parameters of railway infrastructure and rolling stock are classified and then analysed from the TSI requirements point of view.

Implementation of the Comprehensive plan for the modernization and expansion of the railway infrastructure

2020 ◽  
Vol 22 (1) ◽  
pp. 82-84
Author(s):  
MIKHAIL I. BESKHMELNITSYN ◽  
Keyword(s):  
Russian Federation ◽  
Rolling Stock ◽  
Central Ring ◽  
Long Distance ◽  
Strategic Objectives ◽  
Passenger Traffic ◽  
Comprehensive Plan ◽  
Railway Infrastructure ◽  
The Russian Federation ◽  
Control Technologies

This article was prepared on the basis of a speech at the Gaidar Forum on January 16, 2020. It discusses the implementation of the Comprehensive plan for the modernization and expansion of the main infrastructure (CPMI). It has become a national project, distributed throughout the country, its results should be felt by the whole society. The author evaluates the successfully implemented projects for the development of the Central transport hub – the creation of the Moscow Central Ring and the Moscow Central Diameters. It is also about the revival of the Northern Sea Route, the development of the Baikal-Amur Mainline and the Trans-Siberian Railway. These tasks were set in the Decree of the President of the Russian Federation of May 7, 2018 № 204 «On national goals and strategic objectives of the development of the Russian Federation for the period until 2024». The infrastructure upgrade will also affect long-distance passenger traffic, rolling stock. The author considers the conclusion of a contract with the Tver Carriage Works as an example of the modernization that has begun, notes that it provides for the renewal of the Tver Carriage Works itself. The author pays special attention to monitoring the implementation of the Comprehensive Plan for the modernization and expansion of the main infrastructure. It is indicated that when spending significant financial resources, it is extremely important to use modern control technologies, including BIM technologies. In addition, it is necessary to conduct work openly so that citizens can see in real time how national projects are being implemented.

scholarly journals Analysis of Influence of Number of Station Stops on Punctuality of Passenger and Suburban Trains

2021 ◽  
Vol 19 (1) ◽  
pp. 136-155
Author(s):  
E. A. Mekhedova
Keyword(s):  
Technical Condition ◽  
Rolling Stock ◽  
Technical Equipment ◽  
Past Performance ◽  
Long Distance ◽  
Traffic Conditions ◽  
Transit Capacity ◽  
Catch Up ◽  
To Come ◽  
The Relationship

One of the main tasks of railway employees is to ensure 100 % punctuality of passenger and suburban trains. However, this is impossible due to the action of various reasons, comprising actual reliability of technical equipment and vehicles, natural and other factors. Various companies have different standards and practices of setting and monitoring relevant indicators.The objective of the study was to find out the degree of influence of the e factor formulated as «the number of station stops on the route» on the rate of punctuality of passenger and suburban trains.Calculations and approbation of the suggested model were performed using the example of the JSC Russian Railways.Russian Railways standardise punctuality indicators based on the past performance principle. This does not guarantee that the objective conditions for organising operational work on various railways are fully considered. Besides, it is suggested to consider as main conditions: the level of the use of transit capacity, the technical condition of the infrastructure and rolling stock, etc. However, the factor of the number of station stops of passenger or suburban trains en route envisaged by the traffic schedule is not considered. The greater is the number of station stops, the greater impact, in the absence of a possibility to recover the delay and catch up the traffic schedule, this factor has on the level of traffic punctuality. In turn, the chance to get back on traffic schedule in passenger long distance traffic is higher than in suburban traffic with short routes.The number of station stops varies significantly across the railways, which indicates the unequal conditions of their operation according to this factor.The numerical value of the e factor, as well as of the values of the share of delayed trains (calculated separately for passenger and suburban trains) were determined: by delay in departure – ádep; by delay in arrival at intermediate points of the route – áint; by delay in arrival at the destination – áar. Based on these data, parameters have been established that have allowed to determine the relationship between the number of station stops (e) and the change in the share of delayed trains. Using the methods of mathematical statistics, the insignificant influence of the e parameter on the values of ádep, áint and áar has been established. It is shown that the punctuality of passenger and suburban trains is significantly influenced by the traffic conditions after departure from the initial station and especially by the possibility to come back on the traffic schedule after possible delays along the route. In this case, one should consider the combined organisation of passenger and freight traffic on most lines of the considered network. It is proposed to optimise the number of standardised indicators in view of their reduction.

Coordination of technology of railway operation of the Republic of Tajikistan and organization of railways in international traffic

2018 ◽  
Vol 77 (4) ◽  
pp. 211-217 ◽  
Author(s):  
P. N. Pulatov
Keyword(s):  
Rolling Stock ◽  
Railway Transport ◽  
Transport Services ◽  
Railway Infrastructure ◽  
External Conditions ◽  
The Republic ◽  
Railway Operation ◽  
Required Quality

Current geopolitical and economic conditions for the functioning of railway transport in most post-Soviet states are such that it is extremely difficult to provide required quality of transport services and break-even operations at high expenses for maintaining the railway infrastructure and rolling stock. Dynamics of transportation of the Tajik Railway (TSR) is shown, which displays that most of its sections are classified as low-intensity ones. The paper proposes methodical principles, setting and qualitative analysis of the task of rationalization of operational work and organization of car flows for international transportation, taking into account the specifics of the Tajik Railway. There is a problem of complex maintenance of the efficiency of operational work in modern conditions based on the synthesis of the tasks of self-management (rational internal operational technology of the Tajik Railway) and coordination tasks (technological interaction with railway administrations of other states). Author substantiated the necessity of solving this problem. Proposed classification of technological restrictions and controlled variables in the performance of transport takes into account methods for changing external conditions for the functioning of the railway landfill and methods for increasing internal efficiency of its operation. The search for the solution of the problem involves direct search of variants along its ordered set with clipping of groups of variants that do not correspond to constraints, with the subsequent finding of compromise control over a set of effective alternatives.

scholarly journals Study of Model for Selection of Priorities for Development of Cargo Transportation

2019 ◽  
Vol 67 ◽  
pp. 02003
Author(s):  
Valerii Kuleshov ◽  
Ganna Shapoval ◽  
Maksym Kutsenko
Keyword(s):  
Regulatory Framework ◽  
Market Development ◽  
Rolling Stock ◽  
Cargo Transportation ◽  
Selection Of

The transport market of operator companies of various forms of ownership in Ukraine is constantly evolving, but the tasks associated with the selection and implementation of the priorities of the development of the transport market, the provision of railway services by the carriers - owners of rolling stock, are not fully resolved. There is no regulatory framework that determines the procedure for choosing the priorities of transport market development, their status is not defined, the relation of the selected priorities with the budget of Ukraine is not defined. Therefore, the task of improving the mechanism for selecting scientific and technological priorities for the development of these processes is relevant.

RANCANG BANGUN TRACKING ARAH TEMBAKAN MENGGUNAKAN SENSOR POSISI BERBASIS PID

2021 ◽  
Vol 7 (1) ◽  
pp. 43-48
Author(s):  
Agung Raharjo ◽  
Eko Kuncoro ◽  
Imam Azhar
Keyword(s):  
Real Time ◽  
Data Communication ◽  
Raspberry Pi ◽  
Long Distance ◽  
Visualization System ◽  
Control Command ◽  
Combat Unit ◽  
Army Personnel ◽  
Automation Technology ◽  
Research Show

Seiring dengan perkembangan teknologi komunikasi dan otomasi, pelaksanaan tugas militer dapat dibantu dengan mengembangkan alutsista militer. Salah satunya pengembangan robot tempur yang akan digunakan sebagai alat untuk membantu tugas operasi jarak jauh pada satuan tempur TNI AD. Pada robot tempur tersebut akan ditanamkan sistem komunikasi data berupa perintah kendali laju robot, perintah kendali senjata serang, dan sistem visualisasi yang dapat digunakan untuk mendukung pergerakan robot hingga mencapai sasaran yang ditentukan, serta sebagai sistem penginderaan jarak jauh robot tempur untuk memonitor area musuh yang akan ditinjau. Operator menggunakan sebuah joystick untuk mengendalikan robot tempur dan tablet Android untuk memantau dan mendeteksi arah sasaran. Penelitian ini membahas tentang perancangan pendeteksian sasaran tembak yang dapat dikendalikan dari jarak jauh. Metode yang digunakan adalah metode eksperimen berbasis PID. Penelitian ini berfokus pada pendeteksian sasaran tembak yang nantinya akan terhubung dengan Raspberry Pi 3, sehingga senjata dapat mendeteksi adanya sasaran tembak yang ada di dalam jangkauan sensor posisi. Hasil dari penelitian menunjukkan bahwa robot dapat dikendalikan dengan mudah menggunakan joystick dan secara real-time terlihat pada layar Android yang terpasang pada kontrol joystick tersebut. Selain itu, sistem juga dapat membedakan antara sasaran tembak dan objek yang bukan sasaran tembak. Penelitian ini diharapkan dapat mendukung tugas operasi personel TNI dalam menjalankan misinya dengan memanfaatkan robot tempur. Along with the development of communication and automation technology, the implementation of military duties can be assisted by developing military defense equipment. One of them is the development of a combat robot that will be used as a tool to assist the task of long-distance operations on the Army combat unit. In the combat robot, a data communication system will be implanted in the form of a robot rate control command, an attack weapon control command, and a visualization system that is used to support the robot's movement to reach the target specified as a combat robot's remote sensing system for monitoring enemy areas to be reviewed. The operator has used a joystick to control the combat robot and to detect the direction of the target can be monitored with an android tablet. This research discusses the design of the detection of target fire that can be controlled remotely. The method used is experimental based on PID. This research focused on detecting firing targets that will be connected with Raspberry Pi 3 so that the weapon can detect the presence of firing targets within the position sensor. The results of the research show that the robot can be easily controlled using a Joystick and in real-time visible on the Android screen mounted on the Joystick control, the system can distinguish between target shooting and non-target objects. This research is expected to support the operational duties of army personnel in carrying out their missions by utilizing combat robots.

FORMATION OF EXPERIMENTAL AND METHODICAL BASIS TO ESTIMATE STRENGTH CORRESPONDENCE OF DOMESTIC PASSENGER CAR BODIES TO EUROPEAN STANDARD BASIS

2021 ◽  
Vol 2021 (8) ◽  
pp. 67-76
Author(s):  
Sergey Korshunov ◽  
Aleksandr Skachkov ◽  
Sergey Samoshkin ◽  
Aleksandr Smirnov ◽  
Dmitriy Goncharov
Keyword(s):  
International Markets ◽  
The Body ◽  
Standard Basis ◽  
Rolling Stock ◽  
European Standard ◽  
Static Tests ◽  
Railway Infrastructure ◽  
Methodical Basis ◽  
Equipment Development ◽  
European Standards

The development of the international trade and the entrance of domestic car manufacturers into international markets required bench equipment development for tests in accordance with the requirements of the European standards. In this connection the purpose of this work is to develop an experimental and methodical basis for the estimation of the strength correspondence of export railway produce to the European standard basis. In the work there is shown a description of the bench developed for static tests of rolling stock for loads corresponding to the European standard basis. In the requirements mentioned there is used a more extended list of loads and combination of efforts and the necessity in the application of longitudinal loads to the elements of the end wall in three levels should be particularly emphasized. On the test bench there are carried out static tests of the car of model 61-4514 for Egyptian national railways and the body of the motor-rail car of model 2853 for the railway infrastructure of Serbia.

scholarly journals Do experienced physiotherapists apply equal magnitude of force during a grade I central pa on the cervical spine?

2004 ◽  
Vol 60 (4) ◽  
Author(s):  
M. Conradie ◽  
E. Smit ◽  
M. Louw ◽  
M. Prinsloo ◽  
L. Loubser ◽  
...  
Keyword(s):  
Cervical Spine ◽  
Spinal Disorders ◽  
Joint Mobilization ◽  
Treatment Techniques ◽  
Average Maximum ◽  
Manual Examination ◽  
The Mean ◽  
The Difference ◽  
Posterior Anterior ◽  
Selection Of

Background and purpose: Physiotherapists frequently use central posterior-anterior (PA) joint mobilization techniques for assessing and managing spinal disorders. Manual examination findings provide the basis for the selection of treatment techniques. From the literature it is evident that the level of reliability varies when physiotherapists perform different mobilization techniques. Repeatability of mobilization techniques is important for better physiotherapy management. The aim of the study was to determine whether experienced physiotherapists apply equal magnitude of force during a grade I central PA mobilisation technique on the cervical spine. Another aim was to determine the variation in the magnitude of forceapplied by each individual physiotherapist. Subjects: Sample of convenience, consisting of sixteen (n=16) selected qualified physiotherapists with experience inOrthopaedic Manual Therapy.Methods: A grade I central PA was performed on the Flexiforce TM sensors positioned on C6 of the same asymptomatic model to measure the applied magnitude of force. Two separate measurements, each lasting 30-seconds, were obtained.Results: The average maximum peak force applied by the majority of physiotherapists (87.5%) was between 10.95gand 72g. The difference in the forces applied for the two measurements ranged between 0.64g and 24.4g. The BlandAltman scatterplot determined the mean of the difference between measurement one and two, calculated for the group, was zero. When comparing the two measurements, little variation was noted in the forces applied, as well as the coefficient of variation for each physiotherapist.Conclusion and Discussion: Current results demonstrated good intra-therapist and moderate to good inter-therapist repeatability. Further research is required to generalize results.

scholarly journals Image Quality Differences In CT Scan Thorax By Using Slice Thickness Variation

2017 ◽  
Vol 8 (2) ◽  
pp. 87-91
Author(s):  
Samsun Samsun ◽  
Legia Prananto ◽  
Novita Wulandari
Keyword(s):  
Image Quality ◽  
Ct Scan ◽  
Spatial Resolution ◽  
Optimal Parameter ◽  
Thickness Variation ◽  
Slice Thickness ◽  
Picture Quality ◽  
Thorax Ct ◽  
Research Show ◽  
Selection Of

The picture quality get from CT Scan of Thorax which required optimal parameter selection that’s right, one of them the selection of slice thickness. The method taken from theses that have been publish in the year 2013. The results of the research show the percentage of the value of the average spatial resolution of 2.5 mm slice thickness is (33.3%), noise (17.8%), artefact (1%). On the thickness of the slices 5 mm spatial resolution is (17%), noise (8.9%), artefacts (0%). On the thickness of slices of 7.5 mm spatial resolution is (8.9%), noise (11.1%), artefacts (53.3%). While the thickness of the slices the spatial resolution is 10 mm (8.9%), noise (22.2%), artefacts (68.9%). Based on the research results obtained the conclusion that thickness 2.5 mm slices on Thorax CT-Scan images produce better picture quality than with the thickness of the slices 5 mm, 7.5 mm, 10 mm, because the spatial resolution is more clear so as to reduce noise and artifacts.

scholarly journals Proses Pengembangan Social Enterprise Agriculture: Studi Biografi Pada Agradaya

2019 ◽  
Vol 7 (2) ◽  
pp. 133
Author(s):  
Karlin Maulinda
Keyword(s):  
Social Entrepreneurship ◽  
Agricultural Education ◽  
Agricultural Production ◽  
Social Enterprise ◽  
Access To Information ◽  
Sale Price ◽  
Study Approach ◽  
The Social ◽  
Research Show ◽  
Selection Of

Social entrepreneurship in Indonesia is growing rapidly today. Social entrepreneurship is an alternative solution in the social solution of society with entrepreneurship. One of the social entrepreneurship organizations in Yogyakarta is Agradaya which is engaged in agriculture. Agradaya is optimizing agricultural production. This study identifies the process of social entrepreneurship using the concepts of Perrini and Vurro. The method used in this study is a qualitative biography study approach that expresses the experiences of attracting actors in the process of developing social entrepreneurship. Data collection techniques are carried out by observation, interviews, and document search. The selection of informants is purposive which directly leads to goals. In this study the focus was on the two founders of Agradaya, Andhika and Asri. Supporting informants consist of farmers who are members of a women's farmer group (KWT) Menoreh guided by Agradaya. Data analysis is done by categorizing data, describing, and data presented in the form of narrative stories along with graphics, schemes, and drawings, then draw conclusions. The results obtained in this study are that Agradaya starts the practice of social entrepreneurship directly as a social enterprise. The results of the research show that in the process of development Agradaya approaches farmers and collaborates. There is encouragement from each of the founders to solve social problems in agriculture by conducting natural agricultural education, land management, educating the use of solar dryer technology in the process of adding value to the sale price, as well as open access to information and markets for farmers.

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