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Offshore petroleum industry has its own logistic system created to meet requirements of industry complex operations in hostile marine environment. Offshore logistic is responsible for supplying installations with construction materials, variety of bulk and packaged goods, refuelling and personnel movement. Purpose built offshore supply vessels and multipurpose tugs are primary means of transportations...
Hazardous occurrences, which require to conduct rescue operations, without any doubt require prediction. In order to solve this problem, a developed method is necessary of adaptation of possible prediction tools to the conditions in which hazardous occurrences are examined. This work contains analysis of the proposed components of a prediction system which consists of an approximate model of processes...
Growing interest in partitioning and transmutation (P&T) of nuclear waste is observed worldwide during last decades. The main goal is to reduce amount of highly radioactive waste produced by nuclear industry by reusing spent nuclear fuel. Reduction of required storage time is achieved at the same time. So called closed nuclear fuel cycle requires however development of new reactor technologies,...
The program of surveying the negative impact of motor vessel wrecks on the environment and ecosystem of the southern Baltic carried out by the Maritime Institute in Gdańsk unequivocally indicated that out of a couple dozen of surveyed wrecks the most dangerous is the wreck of the Stuttgart ship which has settled in the vicinity of Gdynia. It is a flagship example of badly executed war wreck removal,...
VMS signs (variable message sign) as compared to conventional signs (horizontal and vertical) are a relatively new solution. The practice of using this type of solutions of traffic is shorter than 60 years [8,9,11]. A small number of VMS on the road network is primarily due attention to the cost of their installation and maintenance. These signs also characterized by a relatively narrow catalog of...
In order to protect the environment, reduce greenhouse gas emission and improve the energy efficiency of the asphalt mixtures manufacturing process new technologies have been used. One of them is the Half Warm Mix Asphalt (HWMA) technology, wherein the foamed bitumen is used. The use of reclaimed asphalt pavement in the mineral mixture was also an important factor. In studies performed in order to...
In the paper the authors present an advanced model of the hyperbolic shape torsion spring, which is based on the finite element method. In this model, the contact forces between the arms of the spring were taken into consideration. It allows the simulation of its operation even in the case of a large torsion angle. Based on the FEM model of the spring, the spring stiffness characteristic was constructed...
The paper presents macroscopic model of traffic flow during morning rush hours in a whole average middle-sized city. It was assumed that the spatial distribution of actual velocity of vehicles in particular zones of the city is inhomogeneous. It was further assumed that all drivers pick their route so as to get in the shortest possible time from the starting point to their destination point. It was...
This work analyzes the possibility of using models of risk value evaluation to estimate the possibility of an emergency. Thanks to evaluation of such risk value it is possible to effectively solve problems related to organization of rescue operations when emergencies occur. Taking these estimations into account allows to effectively solve logistic problems related to providing necessary supplies during...
The EDF model shows dependency between the variation of measurements in the level of the reservoir, medium temperature and influence of time to the displacements observed on the crest of the Solina dam. Previous analysis showed that the model accurately reflects the movement of the crest of the dam, therefore further action was taken towards the prediction of the behavior of the object. The analysis...
The objective evaluation of beef carcasses. WSVIA (whole side video image analysis) is a technology for the evaluation of the lateral parts of the carcass, which can be applied to industrial and commercial lines. For various reasons existing method of the objective assessment of beef carcass have limitation for scientific and commercial applications. Currently used method of classification of beef...
Since the mid of last century, skyscrapers have become the symbol of the pride of cities or even countries. But tall structures are also helping to grow the cities vertically. The advantages of vertical expansion are housing more facilities within a limited space. The main problem with building structures taller is the limitations of the vertical transport. For this transport problem buildings now...
Simulation results from using the cellular automata as an example of defects on the surface of austenitic stainless steel 08Cr18Ni10Ti are presented in this paper. Practical confirm the feasibility of the proposed method for simulation modeling of corrosive process of steel in neutral environments.
Traffic noise (car, rail and air transport) has an influence on human health and the comfort of human life. The human body experiences the harmful effect of traffic noise beginning at values slightly higher than hearing range. This effect involves excessive tiredness, drowsiness and discomfort. Equilibrium, psychomotor fitness and physiological functions may also be disturbed. Acoustic pressure higher...
Technology is a part of the environment in which each company operates. It reflects the current level of knowledge about the production of products and services. It is one of the strongest elements affecting the business environment due to the continuous development and progress. The universality of the Internet resulted in the transfer of a business into a virtual arena, in particular, contributed...
This article presents selected European and Polish hydrotechnical structures of waterways, their history, present state and the latest construction trends. Waterways were pushed to the back as a means of transport for industry when the rail and roads developed. Nowadays there are new possibilities arising for waterways as water tourism has become a very popular way of leisure. The key attraction for...
Taxes are an inherent aspect of running a business, including the transport company. Its knowledge, in the name of ignorantia nocet iuris (lat. Ignorance of the law is harmful), determines the efficiency of the company and to avoid penalties, affecting the company's financial condition. The performance of the company, also in the knowledge of the existing tax law allows to increase chances of success...
Passenger cars are the means of transport used every day by millions of people worldwide. Regardless of purpose of the use, the cars have to meet a number of technical and legal requirements as to be admitted to traffic. It also can not be forgotten about some of their characteristics that affect traffic safety on the road. Among these features can distinguish those associated with the generation...
In 1866, when a new kind of weapon for submarines and motor torpedo boats, torpedoes, was introduced, a race for making them as efficient as possible and giving them the longest range possible began. The very first parameters were not very impressive. Caliber 381mm, length of 4.07m and a compressed-air propulsion were able to give torpedoes not more than 6-7 knots of speed and a range between 200-600...
Annually, every ropeway has to be tested to provide safety for passengers. One of the most significant parts of the inspection is braking test with load. In order to ensure maximal reliability the test is conducted with the maximum load, which may occur during operation. This increases the dynamic impact on ropeway elements. The article provides full methodology of setting the ropeway parameters which...
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