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Nowadays companies are forced to streamline their efforts to guarantee a high performance. In order to maintain this performance the whole supply chain (SC) has to respond quickly and cost effectively to disruptions/changes in the environment. Therefore, improvements of the flexibility of the entire supply chain are necessary. We call the flexibility of supply chains, supply chain flexibility (SCF)...
Due to the fact that an efficient execution of production ramp-ups strongly impacts the economical success of a new product, ramp-up management shifted into the centre of scientific and practical interest in recent years. Despite great efforts, many important problems could not be solved so far. One of the unsolved problems concerns the planning and controlling of ramp-up costs. Up to now ramp-up...
Modern modeling techniques like MDA (Model Driven Architecture), MDSD (Model Driven Software Development), DSL (Domain Specific Languages) and others try to simplify the software development process and reduce project risks. Nonetheless 70% of all software problems run into problems due to incomplete requirements, exaggerated expectations from users or too little actual involvement of domain experts...
Application of ABC have significantly increased in logistics due to its ability to provide greater insight into the costs of performing specific logistics services and their impact on supply chain performance and in complexity. The relatively recent application within logistics has caused most ABC models to be diagnostic or reengineering focused. Implementing ABC can be complex and goes beyond activity...
In this paper the method of estimating operational potential of multipurpose equipment using comparison to functional exemplar is described. This method is adopted to assessment of armoured engineer vehicles and theoretical exemplar of such equipment is worked out. It enables assessment of existing equipment and after modernization in different configuration too.
The positive realization problem for two dimensional (2D) general model is addressed. Sufficient conditions for the existence of a positive realization of a given strictly proper transfer matrix are established. Procedures for computation of a positive realization of a given strictly proper transfer matrix is proposed and illustrated by examples.
This article is about logistics centres, to find the right placement for them, how to find how many you need for each countra and what will be their relevant area. This article describe one of many way how to solve this question.
Advisability of railway track vehicle gauge measurements is discussed in the paper as well as new measurement techniques and devices. In particular the newest systems implemented by PKP have been outlined in detail.
Particularly sensitive sea areas (PSSAs) are areas of the seas and oceans that need special protection because of their ecological, economic, cultural or scientific significance and their vulnerability to harmful impacts from international shipping activities. When an area is approved as a PSSA, specific measures can be used to control the maritime activities in that area to improve maritime safety...
This contribution focuses on the characteristics of common patterns of demand specifications for rail traction vehicles operating at industrial locations; followed by the analysis of track conditions on routes given by the operator and the analysis of trains travelling at low speed. In conclusion, the paper gives a graphical representation of the parameters that have been designed for determining...
The design parameters of the wagon and its running gear influence on anti-derailment stability. The influence of working order of slab wagons on anti-derailment stability. The mathematical model of six axles special wagon for transport of hot slabs has been worked out. The mathematical model is used for evaluation of the vertical wheel forces on the wrapped track. Some operational factors are analysed...
The contribution deals with initial construction as well as the potentials of logistic infrastructure development, emphasising establishing of public logistic centres. The aim is to identify, consider and propose solutions which lead to system changes in the area of regional infrastructure, with endeavour to minimise negative environmental impacts.
Design of damage quantification methods for rail vehicle, e. g. due to an accident, results from statistical processing of vehicle recalculated residual value and wearing development models processed on the basis of stochastic processes theory. The damage quantification of vehicle means quantification of costs associated with renewal of vehicle or its unit, or quantification of costs originated in...
In this paper a notion of traffic conflict "dynamics" has been defined. Described here are are problems of rear-end conflicts that is traffic conflict typical for car-following, where the only evasive action is emergency braking of following wehicle, [1]. In this context the present work is essentially connected with the same author's earlier works, [2], [3]. Dynamics of above mentioned...
The paper deals with analytical solution of traffic permeability of Přerov City within geographic information systems. Transport analysis which is common geographical research method is taken as input phase of data capturing and preprocessing for final logistic solution of traffic permeability of middle-scale cities. The main emphasis is given to overground transport (road and railways). The paper...
In their contribution the authors describe the utilization of the original Programme GRAFSIT which they have developed for solution of flowing in engineering networks of various types. In the time being, the Programme is accessible for public on the address http://hgf.vsb.cz/grafsit and it can be utilized for education of students in the framework of several technical subjects. In addition, this Programme...
Expert system is a computer-based system, which acts in a manner similar to a human expert. These systems have expertise in solving problems within a given area of knowledge. Thanks to the attributes they found its utilization in supporting of logistics decision making too. Expert systems applications could potentially provide benefit across every logistical function. Known are applications in transportation,...
The paper presents a problem of intake and release of orders to production process in Flame-cut shapes plant of VITKOVICE STEEL a.s. company. Paper proposes such an order system which is able to respect disposable production capacities of the mentioned plant and which at the same time enables to fulfil planned production volumes. The solution core consists in finding a relation between an output of...
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