scholarly journals Logistics of Trainsets Creation with the Use of Simulation Models

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Michal Sedláček ◽  
Hynek Pavelka
Keyword(s):  
Czech Republic ◽  
Simulation Model ◽  
Computer Simulations ◽  
Simulation Models ◽  
Rail Transport ◽  
Experimental Modeling ◽  
Design Solution ◽  
The Czech Republic ◽  
Operational Process ◽  
Operational Processes

Abstract This paper focuses on rail transport in following the train formation operational processes problem using computer simulations. The problem has been solved using SIMUL8 and applied to specific train formation station in the Czech Republic. The paper describes a proposal simulation model of the train formation work. Experimental modeling with an assessment of achievements and design solution for optimizing of the train formation operational process is also presented.

Analysis of the Icelandic Modified Pitched Green Roof

2014 ◽  
Vol 1041 ◽  
pp. 253-256
Author(s):  
Klara Necadova ◽  
Petr Selnik
Keyword(s):  
European Union ◽  
Czech Republic ◽  
Green Roof ◽  
Material Design ◽  
Design Solution ◽  
The European Union ◽  
The Czech Republic ◽  
Climate Conditions ◽  
Roof Structure ◽  
The Individual

In Iceland appears historically proven construction of the pitched green roof. The material composition and methods of technological implementation create a unique comprehensive bond, which is resistant to frequent changes and fluctuations of the extreme climate conditions. Nowadays, the design of the construction is not being further developed, it does not use modern construction methods, knowledge, materials and also the construction does not meet the requirements of the building legislation in the European Union and in the Czech Republic. The article is an analysis of structural and material design of the original concept of the pitched turf roof originated from Iceland and particularly the theoretical design solution its modernized modification, which is adapted to suit the requirements of the building codes and laws in the European Union and in the Czech Republic. Another discussed problem is the assessment of the impacts of climate phenomena and its effect on the overall stability and behaviour of building physics of the roof structure and the individual layers captures possible utilization of this construction. The grass mats that create the casing of the pitched green roof affect the physical behaviour of the structure, which is discussed on a theoretical basis.

scholarly journals The Czech Republic SimSmoke: The Effect of Tobacco Control Policies on Smoking Prevalence and Smoking Attributable Deaths in the Czech Republic

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
David T. Levy ◽  
Hana Ross ◽  
Alexandra Kmetova ◽  
Eva Kralikova ◽  
Michal Stoklosa ◽  
...  
Keyword(s):  
Czech Republic ◽  
Simulation Model ◽  
Tobacco Control ◽  
Smoking Prevalence ◽  
Control Policy ◽  
Premature Mortality ◽  
The Czech Republic ◽  
Tobacco Control Policies ◽  
Free Air ◽  
Cessation Treatment

Background. The Czech Republic has a weak tobacco control record. This paper describes a simulation model examining the effect of future tobacco control policies in the Czech Republic on smoking prevalence and associated future premature mortality. Methods. The model is developed using the SimSmoke simulation model of tobacco control policy. The model uses population, smoking rates and tobacco control policy data for the Czech Republic. It assesses, individually and in combination, the effect of taxes, smoke-free air laws, mass media campaigns, advertising bans, warning labels, cessation treatment, and youth access policies. Results. With a comprehensive set of policies, smoking prevalence can be reduced by as much as 22% in the first year, by 35% in 20 years, and up to 40% in 30 years. By 2040, 5,873 deaths can be averted in that year alone. Without these policies, 113,004 people in the Czech Republic will die prematurely in the next 30 years. Conclusions. The model shows that significant inroads to reducing smoking prevalence and premature mortality can be achieved through tax increases, a high intensity media campaign, a comprehensive cessation treatment program, strong health warnings, stronger smoke-free air laws and marketing bans, and well-enforced youth access laws.

scholarly journals Comparison of Urban and Suburban Rail Transport in Germany and in the Czech Republic

2014 ◽  
Vol 14 (2) ◽  
pp. 165-194 ◽  
Author(s):  
Daniel Seidenglanz ◽  
Filip Chvátal ◽  
Katerina Nedvedová
Keyword(s):  
Czech Republic ◽  
Research Question ◽  
Rail Transport ◽  
Transport Infrastructure ◽  
Transport Systems ◽  
Transport Sector ◽  
Professional Activity ◽  
The Czech Republic ◽  
Metropolitan Regions ◽  
Transport Services

Abstract Rail transport is an environmentally friendly form of passenger transport which can be utilized effectively also in urban and suburban transport systems. The paper describes the urban and suburban rail transport system including comparison of selected Czech (Prague, Brno and Ostrava) and German metropolitan regions (Munich, Nuremberg and Dresden). Its aim is to analyze the importance of various factors influencing the differences between the situation in Germany and in the Czech Republic. Therefore, the research question is whether these differences are primarily caused by a different liberalization stage, or whether they are a result of other factors such as available infrastructure, investment level, rail transport services budget, structure and activity of ordering bodies and coordinators or geographical context. The supply of city and suburban rail transport is quite good in Germany and in the Czech Republic, although trains in Munich, Nuremberg and Dresden run more frequently, faster and are better interconnected with car transport. German rail transport sector is at a higher stage of liberalization, and tendering procedures are the preferred selection method for contractor carriers. However, a degree of liberalization of the railway sector is not the key marker indicating a better standard of urban and suburban rail transport in Germany because it is the high standard which is achieved as the consequence of the professional activity of the ordering bodies and train service coordinators in combination with geographical conditions, available financial sources and effective transport infrastructure. On the other hand, the importance of liberalization cannot be totally overlooked as tenders are a tool for the ordering bodies to strongly affect the price and quality of transport services in their area. The supply of better quality and attractive transport to passengers could increase the usage of rail transport in metropolitan regions and could have indirect but important socio-economic impacts

scholarly journals Development of an anti-flood board to protect the interiors and exteriors of the infrastructure

2018 ◽  
Vol 180 ◽  
pp. 02083
Author(s):  
Michal Petru ◽  
Pavel Srb ◽  
Ladislav Sevcik ◽  
Tomas Martinec ◽  
Petr Kulhavy
Keyword(s):  
Czech Republic ◽  
Numerical Simulations ◽  
Central Europe ◽  
Natural Water ◽  
Water Cycle ◽  
Design Solution ◽  
Great Loss ◽  
The Czech Republic ◽  
Loss Of Life ◽  
Industrial Buildings

This article deals with the development of an anti-flood board to protect the interior and exterior of various infrastructures, such a houses, cottages or industrial buildings. It was designed prototypes and assembled numerical simulations. In Central Europe and in particular in the Czech Republic, floods are an integral part of the natural water cycle and cause great loss of life and great property damage. The development of new types of mobile anti-flood boards is very important as the design solution is developed for flood protection with regard to minimizing weight, cost of production, easy manipulation, simplicity and speed of installation.

scholarly journals Locomotive Assignment Problem with Heterogeneous Vehicle Fleet and Hiring External Locomotives

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Dušan Teichmann ◽  
Michal Dorda ◽  
Karel Golc ◽  
Helena Bínová
Keyword(s):  
Linear Programming ◽  
Czech Republic ◽  
Assignment Problem ◽  
Rail Transport ◽  
The Czech Republic ◽  
Transport Operator ◽  
Proposed Model ◽  
Vehicle Fleet ◽  
Locomotive Assignment

This paper focuses on solving the problem of how to assign locomotives to assembled trains optimally. To solve the problem, linear programming is applied. The situation we model in the paper occurs in the conditions of a transport operator that provides rail transport in the Czech Republic. In the paper, an extended locomotive assignment problem is modeled; the transport operator can use different classes of the locomotives to serve individual connections, some connections must be served by a predefined locomotive class, and the locomotives can be allocated to several depots at the beginning. The proposed model also takes into consideration the fact that some connections can be served by the locomotives of external transport companies or operators. The presented model is applied to a real example in order to test its functionality.

scholarly journals Comparison of the Level of Personnel Work in the Czech Republic and Slovakia

2020 ◽  
Vol 13 (1) ◽  
pp. 287
Author(s):  
Lukáš Smerek ◽  
Milota Vetráková ◽  
Šárka Čemerková ◽  
Vojtěch Malátek
Keyword(s):  
Czech Republic ◽  
Market Economy ◽  
Business Performance ◽  
Positive Impact ◽  
Slovak Republic ◽  
Business Environment ◽  
The Czech Republic ◽  
Economic Changes ◽  
And Performance ◽  
Operational Processes

After 1989, the countries of Eastern and Central Europe began to undergo significant social and economic changes associated with the process of transformation of the economy into a market economy. Transformation is not only associated with the creation of a business environment, with the formation of new legal and institutional mechanisms, but also with a change in the thinking and behavior of people including employees, managers and owners. The paper aims to identify important processes and trends in developing human resource management in companies in the Czech Republic and the Slovak Republic. We conducted the questionnaire survey in 2018 and 2019 in various areas of business. We obtained the opinions of respondents from 1542 companies. In the research, we assume that in the conditions of a market economy compared to a centrally managed economy, employees are the most important source of development and performance of companies. Descriptive statistics were used to characterize the sampling unit. The other methods used to evaluate data in the paper were the Mann-Whitney test and Spearman Correlation coefficient. The research revealed that despite a long common history, differences in the field of personnel work have arisen in the last 20 years of the independent existence of the Czech Republic and the Slovak Republic. The only exception is employee care. It was also found that in the Czech Republic the strategic orientation predominates, on the contrary, companies in the Slovak Republic focused on operational processes. Differences were also found in the way of adaptation and further training of employees. The results of the findings can be used to design processes with the highest positive impact on business performance.

scholarly journals What is a Simulation Model?

2020 ◽  
Vol 30 (3) ◽  
pp. 301-323 ◽  
Author(s):  
Juan M. Durán
Keyword(s):  
Simulation Model ◽  
Computer Simulations ◽  
Scientific Explanation ◽  
Simulation Models ◽  
Scientific Models ◽  
Units Of Analysis ◽  
Novel Approach ◽  
The Many ◽  
The Right ◽  
General Architecture

Abstract Many philosophical accounts of scientific models fail to distinguish between a simulation model and other forms of models. This failure is unfortunate because there are important differences pertaining to their methodology and epistemology that favor their philosophical understanding. The core claim presented here is that simulation models are rich and complex units of analysis in their own right, that they depart from known forms of scientific models in significant ways, and that a proper understanding of the type of model simulations are fundamental for their philosophical assessment. I argue that simulation models can be distinguished from other forms of models by the many algorithmic structures, representation relations, and new semantic connections involved in their architecture. In this article, I reconstruct a general architecture for a simulation model, one that faithfully captures the complexities involved in most scientific research with computer simulations. Furthermore, I submit that a new methodology capable of conforming such architecture into a fully functional, computationally tractable computer simulation must be in place. I discuss this methodology—what I call recasting—and argue for its philosophical novelty. If these efforts are heading towards the right interpretation of simulation models, then one can show that computer simulations shed new light on the philosophy of science. To illustrate the potential of my interpretation of simulation models, I briefly discuss simulation-based explanations as a novel approach to questions about scientific explanation.

scholarly journals Potential Valuation of Route Prague – Trutnov after D11 Completion

2017 ◽  
Vol 8 (2) ◽  
pp. 33-40
Author(s):  
Jakub Hašek ◽  
Roman Hruška ◽  
Aidas Vasilis Vasiliauskas
Keyword(s):  
Czech Republic ◽  
Rail Transport ◽  
Transport Infrastructure ◽  
The Czech Republic ◽  
Highway Project

Abstract In the Czech Republic, there are many regions with unbalanced competition between bus and rail transport on main transport routes. This is due to differences in the quality of transport infrastructure, the attractiveness of the region, routing traffic routes or economic attractiveness for new investors and industry. The aim of this article is to evaluate the potential for bus operators on the route from Prague to Trutnov after completion of D11 highway project.

scholarly journals So Close, So Different – Regional Rail Transport in Poland, the Czech Republic and Slovakia

2016 ◽  
Vol 9 (14) ◽  
pp. 159-179
Author(s):  
Marcin Król ◽  
Jakub Taczanowski
Keyword(s):  
Czech Republic ◽  
Final Section ◽  
Rail Transport ◽  
Passenger Transport ◽  
The Czech Republic ◽  
Economic Context ◽  
Railway Passenger Transport ◽  
Railway Passenger

The objective of this paper is to present three different models of regional railway passenger transport that emerged in the process of post-communist transition after 1989 in neighbouring countries: Poland, the Czech Republic and Slovakia. After an introduction, the second section of the paper shows the historical, spatial and socio-economic context of the analysis. The three resulting models are presented in the following section. This part of the paper is also devoted to the discussion of the developments, experiences and results obtained in Poland, the Czech Republic and Slovakia. The final section provides conclusions.

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