scholarly journals Systematization of development transport systems indicators on the aviation example

2021 ◽  
Vol 341 ◽  
pp. 00048
Author(s):  
Olga Borodina ◽  
Natalya Shatalova
Keyword(s):  
Mathematical Model ◽  
Transport System ◽  
Navigation System ◽  
System Development ◽  
Air Transportation ◽  
Functional Diagram ◽  
Transport Systems ◽  
Catchment Areas

The publication proposes a functional diagram of the connection of the air navigation system to the unified transport system as a subsystem for providing air transportation. This paper consists an analysis of the transport system development factors: goals and principles of building an air navigation system; activities of the trust and alliance in the domestic air transportation market; the need to determine the catchment areas of transport infrastructures. The main result of this publication is the concept of air navigation system development. It is given the concept of mathematical model indicators connection of air navigation system. The list of indicators is given, table “Proposed and real goals of the air navigation system”, figure – ‘Network indicator structure’.

scholarly journals Directives of the European Union on Intelligent Transport Systems and their Impact on the Republic of Croatia

1970 ◽  
Vol 25 (3) ◽  
pp. 273-283 ◽  
Author(s):  
Sadko Mandžuka ◽  
Marijan Žura ◽  
Božica Horvat ◽  
Davor Bićanić ◽  
Evangelos Mitsakis
Keyword(s):  
European Union ◽  
Transport System ◽  
System Development ◽  
Road Transport ◽  
Transport Infrastructure ◽  
Transport Systems ◽  
Intelligent Transport System ◽  
The European Union ◽  
Intelligent Transport ◽  
The Republic

The paper analyzes the current guidelines of the European Union on deployment of Intelligent Transport System, as well as their importance for the development of the Croatian transportation system. The crucial problems of modern transport and traffic are indicated as: congestions and congestion costs, harmful emissions in road transport, fatalities, etc. The current state of Intelligent Transport System development in Croatia is presented based on the transport infrastructure, modern road telematic industry, and other supporting activities (including scientific research, educational activities, standardization system, etc.). The final part of the paper deals with the need and potentials for the development of South East European regional ITS architecture.

scholarly journals Assessment of the level of metropolitan cities transport system development

2019 ◽  
Vol 16 (1) ◽  
pp. 22-31
Author(s):  
Oleg I. Karasev ◽  
Anna O. Krivtsova
Keyword(s):  
New York ◽  
Transport System ◽  
Road Traffic ◽  
Municipal Government ◽  
System Development ◽  
Ecological Impact ◽  
Urban Transport ◽  
Transport Systems ◽  
Large Cities ◽  
Transport Services

Purpose of the study.The study focuses on issues of the level assessment of transport system development of large cities. Despite the wide variety of studies on this issue, there is currently no universal approach to assessing the level of development of the transport system at megalopolises. The present study aims to create a tool for a comprehensive assessment of various aspects of urban transport development that are important for all categories of transport users, and to provide a comparative analysis of the world’s leading megacities in terms of transport development based on the proposed methodology.Materials and methods.In the study, the authors apply an approach related to the construction of integral indexes and ratings of cities based on the values of these indexes. In the calculations of the index, the authors use statistical data from authoritative open sources and information systems of national and municipal government.Results.Based on the results of the world practice analysis, the authors propose the Urban Transport Development Index developed in order to compare the level of transport system development in various cities. The Index provides an opportunity to identify the weaknesses and strengths of cities, to find reserves for the further improvement and development of recommendations in the field of transport policy on this basis. The Index consists of four sub-indexes: the availability of transport services for the urban population, the quality of transport services, road traffic security and the ecological impact of transport, and freight logistics performance. The Index reflects the main aspects of urban transport development and shows the views of different categories of population on the level of transport services. The paper examines the level of transport system development for 2010, 2015, 2016 and 2017 of a group of comparable cities, which includes Hong Kong, London, Mexico, Moscow, New York, St. Petersburg, Singapore, Istanbul, Tokyo and Shanghai. The results showed that Tokyo and London have occupied the leading positions during the period under review. For the seven years Moscow, St. Petersburg and Shanghai have showed the best dynamics of the Index.Conclusion.The proposed method allows both to evaluate the effectiveness of individual regulatory measures known in the practice of other cities, and to simulate their impact on the transport system of the city. The paper concludes with recommendations for further development of cities’ transport systems.

scholarly journals Mathematical model of evaluating the quality of “smart city” transport interchanges functioning

2019 ◽  
Vol 97 ◽  
pp. 01006 ◽  
Author(s):  
Margarita Panteleeva ◽  
Svetlana Borozdina
Keyword(s):  
Mathematical Model ◽  
Development Strategy ◽  
Transport System ◽  
Russian Federation ◽  
Smart City ◽  
System Development ◽  
General System ◽  
Management Decision ◽  
Uniform Motion ◽  
The Russian Federation

The analysis of government policy documents conducted by the authors allowed to establish that the Russian Federation Transport System Development Strategy until 2020, developed back in 2004, does not have a comprehensive and detailed toolkit for the implementation of all the goals and objectives presented in it, in particular, there are no current models of management decision-making at the Russian transport system development in a “smart city. The authors found that the effective management of traffic in a “smart city” should provide load transport network on the brink of its capacity and to maintain a continuous uniform motion, including the relatively low speeds, and increase the level of social development. This formulation of the problem proposed by the authors is fundamentally changing the construction of transport management systems, control algorithms and thus the model on which they are based, are not needed “smart city.” Thus, the authors of the article developed a mathematical model for evaluating the efficiency of transport interchanges in the general system of transport development in the Russian Federation, taking into account the requirements of the “smart city” concept and the growing social effect.

scholarly journals THE THEORETICAL FOUNDATIONS OF THE FUNCTIONING OF THE PERMANENT DEVICES OF THE TRANSPORT SYSTEMS IN UKRAINE IN THE TERMS OF PRIVATIZATION

2017 ◽  
Vol 19 (1(63)) ◽  
pp. 237-243 ◽  
Author(s):  
N.A. Remzina
Keyword(s):  
Transport System ◽  
System Development ◽  
Geographical Location ◽  
Transport Systems ◽  
Common Features ◽  
Transport Services ◽  
Legislative Framework ◽  
The Common ◽  
Theoretical Foundations

In the article it is explored the concept of the permanent devices of transport systems, it is studied the nature of the permanent devices, their functions, characteristics and components. The transport system plays an important role in the socio-economic development of the country, providing conditions for economic growth, increasing the competitiveness of the national economy and the quality of life of the population. Despite the good geopolitical and geographical location of Ukraine, the state of the transport system is pre-critical. This complicates the presence of Ukraine in the market of transport services in the world nowadays. One of the most important components of the transport system is the permanent devices. It is important to study permanent devices of transport systems in the context of reforming the transport system of Ukraine, in the conditions of attracting private capital, privatization. In order to solve the problem of the transport system development, first of all it is required to define theoretically such concepts as the transport system and its components. In the article it is studied two physical components of permanent devices of transport systems - the thoroughfare and the terminal. It is investigated the question of the form of ownership of the permanent devices of the transport systems, the possibility of privatization according to the current legislation of Ukraine. The analysis of the legislative framework of Ukraine and the works of scientists allowed to make certain generalizations regarding the content of the permanent devices of transport systems. In the article it is identified the common features and characteristics of the permanent devices of transport systems.

scholarly journals Increasing the efficiency of highly concentrated coal-water fuel based on the simulation of non-Newtonian fluid flow

2019 ◽  
Vol 294 ◽  
pp. 01009 ◽  
Author(s):  
Nataliya Chernetskaya-Beletskaya ◽  
Andriy Rogovyi ◽  
Igor Baranov ◽  
Alexander Krut ◽  
Maria Miroshnikova ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Energy Consumption ◽  
Transport System ◽  
Three Dimensional ◽  
Transport Systems ◽  
Navier Stokes ◽  
Navier Stokes Equation ◽  
Industrial Enterprises ◽  
Energy Consumption Optimization ◽  
The Mathematical Model

The analysis of further prospects for increasing the efficiency of transportation of coal-water fuel in hydro-transport systems of industrial enterprises is carried out. The mathematical model of the spatial three-dimensional flow of coal-water fuel was developed on the basis of SST turbulence model based on the solution of Navier-Stokes equation. As a result of the calculation, the values of pressure loss, flow rate and velocity distribution over the cross section of the pipeline in the straight section and in the turn were determined, which allowed determining the energy consumption during coal-water fuel transportation in the industrial hydro-transport system. The performed studies allowed us to refine the mathematical model of water-coal suspension flow and, thus, improve the patterns of influence of hydro-transportation scheme and parameters of coal-water fuel on energy consumption for its supply to enterprise consumers. By means of mathematical model of non-Newtonian fluids flow, the patterns of influence of hydro-transport system parameters and transportation modes of coal-water fuel on its energy indicators in industrial hydro-transport systems are determined. The obtained results are related to reduction of energy consumption, optimization of enterprise transport network configuration and increase of efficiency of coal-water fuel transportation to enterprise energy facilities.

scholarly journals Improvement of the weight-and-dimensional control within the environmentally friendly transport system development

2019 ◽  
Vol 110 ◽  
pp. 02165
Author(s):  
Elena Vasilyeva
Keyword(s):  
Transport System ◽  
Traffic Safety ◽  
System Development ◽  
Systems Development ◽  
Transport Systems ◽  
Dimensional Control ◽  
Advantages And Disadvantages ◽  
Regional Budget ◽  
Domestic Practice ◽  
Additional Income

The purpose of the research is to estimate the opportunities to promote the transport systems development by the means of introduction of weight-and-dimensional control and improvement of its methods. The existing methods of weight-and-dimensional control are considered. Advantages and disadvantages of the systems in comparison are revealed. According to the research, such results as the reduction of cases of excesses of admissible mass of freight, collecting additional income for the regional budget, the decrease in the destroying impact on highways, the decrease in the expenses on their repair as well as providing sources for financing of such repair, the decrease in ecological harm from driving of overloaded vehicles, the increase in traffic safety, the reduction of quantity of accidents and life losses caused by driving of the overloaded vehicles are possible. Nevertheless, the analyses of the domestic practice prove that some problems of the organization of weight-and-dimensional control exist. The author offers some measures for the solution of these problems. The results of the research can be used both by the specialists of Ministry of Transport, when drawing up the programmes of the transport system development and during approval of rules and standards of freights transportation, and by the transporters, when planning their activity.

scholarly journals Mathematical model for the evolutionary dynamics of innovation in city public transport systems

Memorias ◽  
2018 ◽  
pp. 36-50
Author(s):  
Hernán Darío Toro-Zapata ◽  
Gerard Olivar-Tost
Keyword(s):  
Mathematical Model ◽  
Transport System ◽  
Public Transport ◽  
Evolutionary Dynamics ◽  
Adaptive Dynamics ◽  
Transport Systems ◽  
State Variables ◽  
Long Term Study ◽  
Long Term Behavior

In this study, a mathematical model is formulated and studied from the perspective of adaptive dynamics (evolutionary processes), in order to describe the interaction dynamics between two city public transport systems: one of which is established and one of which is innovative. Each system is to be influenced by a characteristic attribute; in this case, the number of assumed passengers per unit it that can transport. The model considers the proportion of users in each transport system, as well as the proportion of the budget destined for their expansion among new users, to be state variables. Model analysis allows for the determination of the conditions under which an innovative transportation system can expand and establish itself in a market which is initially dominated by an established transport system. Through use of the adaptive dynamics framework, the expected long-term behavior of the characteristic attribute which defines transport systems is examined. This long-term study allows for the establishment of the conditions under which certain values of the characteristic attribute configure coexistence, divergence, or both kinds of scenarios. The latter case is reported as the occurrence of evolutionary ramifications, conditions that guarantee the viability of an innovative transport system. Consequently, this phenomenon is referred to as the origin of diversity.

THE DEVELOPMENT AND SYSTEMATIC STUDY OF THE PROGRAM OF MEASURES ON IMPROVEMENT OF ORGANIZATION OF TRANSPORT SERVICE OF THE POPULATION IN THE METROPOLIS

2020 ◽  
Vol 4 (26) ◽  
pp. 91-95
Author(s):  
D. A. Smirnov ◽  
Keyword(s):  
Transport System ◽  
Systematic Study ◽  
Public Transport ◽  
Road Network ◽  
System Development ◽  
Transport Service ◽  
Transport Services ◽  
The City

The article reveals the content of measures to improve the organization of transport services in the metropolis. The key directions of the city transport system development are considered. The analysis of the offered offers is carried out. Keywords: metropolis, transport development, public transport, street and road network.

Heave Induced Internal Flow Fluctuations in Vertical Transport Systems for Deep Ocean Mining

2014 ◽  
Author(s):  
Stephan D. A. Hannot ◽  
Jort M. van Wijk
Keyword(s):  
Transport System ◽  
Internal Flow ◽  
Deep Ocean ◽  
Vertical Transport ◽  
Transport Systems ◽  
Ship Motions ◽  
Centrifugal Pumps ◽  
Mining System ◽  
Pump System ◽  
Ocean Mining

Deep ocean mining systems will have to operate often in harsh weather conditions with heavy sea states. A typical mining system consists of a Mining Support Vessel (MSV) with a Vertical Transport System (VTS) attached to it. The transport system is a pump pipeline system using centrifugal pumps. The heave motions of the ship are transferred to the pump system due to the riser-ship coupling. Ship motions thus will have a significant influence on the internal flow in the VTS. In this paper, the influence of heave motions on the internal flow in the VTS for a typical mining system for Seafloor Massive Sulfide (SMS) deposits in Papua New Guinea is analyzed. Data on the wave climate in the PNG region is used to compute the ship motions of a coupled MSV-VTS. The ship motions then are translated into forces acting on the internal flow in order to compute fluctuations in the internal flow. In this way, the workability of the mining system with respect to the system’s production can be assessed. Based on a detailed analysis of the internal flow in relation to ship motions, the relevance of a coupled analysis for the design of VTS is made clear. This paper provides a method for performing such analyses.

scholarly journals Trk2 Potassium Transport System in Streptococcus mutans and Its Role in Potassium Homeostasis, Biofilm Formation, and Stress Tolerance

2016 ◽  
Vol 198 (7) ◽  
pp. 1087-1100 ◽  
Author(s):  
Gursonika Binepal ◽  
Kamal Gill ◽  
Paula Crowley ◽  
Martha Cordova ◽  
L. Jeannine Brady ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Streptococcus Mutans ◽  
Transport System ◽  
Biofilm Formation ◽  
Cellular Response ◽  
Pathogenic Bacteria ◽  
Transport Systems ◽  
Content Type ◽  
Growth And Survival ◽  
Dental Biofilm

ABSTRACTPotassium (K+) is the most abundant cation in the fluids of dental biofilm. The biochemical and biophysical functions of K+and a variety of K+transport systems have been studied for most pathogenic bacteria but not for oral pathogens. In this study, we establish the modes of K+acquisition inStreptococcus mutansand the importance of K+homeostasis for its virulence attributes. TheS. mutansgenome harbors four putative K+transport systems that included two Trk-like transporters (designated Trk1 and Trk2), one glutamate/K+cotransporter (GlnQHMP), and a channel-like K+transport system (Kch). Mutants lacking Trk2 had significantly impaired growth, acidogenicity, aciduricity, and biofilm formation. [K+] less than 5 mM eliminated biofilm formation inS. mutans. The functionality of the Trk2 system was confirmed by complementing anEscherichia coliTK2420 mutant strain, which resulted in significant K+accumulation, improved growth, and survival under stress. Taken together, these results suggest that Trk2 is the main facet of the K+-dependent cellular response ofS. mutansto environment stresses.IMPORTANCEBiofilm formation and stress tolerance are important virulence properties of caries-causingStreptococcus mutans. To limit these properties of this bacterium, it is imperative to understand its survival mechanisms. Potassium is the most abundant cation in dental plaque, the natural environment ofS. mutans. K+is known to function in stress tolerance, and bacteria have specialized mechanisms for its uptake. However, there are no reports to identify or characterize specific K+transporters inS. mutans. We identified the most important system for K+homeostasis and its role in the biofilm formation, stress tolerance, and growth. We also show the requirement of environmental K+for the activity of biofilm-forming enzymes, which explains why such high levels of K+would favor biofilm formation.

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