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The paper has shown the quantitative indicators of the quality of computation system (reliability, avaliability, safety and system out of order) which are used in the survey, control and organization of seaborne traffic. They could appear as an element of complex marine system or an independent electronic system such as personal computer or server. The paper has discussed Markov's model of reliability and avaliability for computational system and redundant computational system. The group of differential equations has been solved in two ways : by method of Laplas transformation and by method of matrix. The results of the analysis and calculation of quantitative indicators of the quality of the computational system have been shown in the tables. In the sixth chapter, the measures have been proposed which could improve reliability and avaliability of the computational system. Qualitative functioning of the computational system will enable more reliable, efficient and safer marine process, efficient support in decision making at all levels of management : survey,control and organization of seaborne traffic. [ABSTRACT FROM AUTHOR]

Since the very beginning of usage of electronic communication in legal matters regarding carriage of goods by sea, there has been a need for international legal regulation of this area. The main goal is to achieve a certain degree of neutrality of media used for executing transportation operations, so that electronic records and electronic messages would have the same legal validity effects as paper documents. New international transport convention that was signed in Rotterdam in 2009 sought to set a firm legal basis for the application of electronic commerce in international transport law. However, given the differences in the regulation of transport documents and electronic commerce in different legal systems, it is doubtful whether the system functioning of electronic equivalent to paper transport document, based on new transport convention provisions, can actually achieve its purpose and ensure its uniform application on the global market. In this context, it is necessary to determine whether specific changes in the Croatian legal system will be necessary. [ABSTRACT FROM AUTHOR]

The modern approach of the exploration of dynamic characteristic of elements or system of some device has been enabled by system dynamics. System dynamics is an excellent software system for studying the dynamic of the behaviour of natural, technical and societal realities i.e. system of various natures and features in which there exist relatively high analogy rate. The methodology of its work, including even the use of digital computers has shown to be an efficient mean for solving the problems: management, behaviour, sensitivity, flexibility and studying of dynamics of the behaviour of the systems of high complexity by computer simulation, in laboratory what means without danger for the realities observed. For the usage of system dynamics in the solution of complex problems, various complex knowledge from various scientific disciplines are required, but good knowledge of the nature of the problem itself, which is being analyzed. The paper has analyzed dynamic characteristic of cooling system in marine diesel engines by means of system dynamics. The cooling system of propulsion of MDE is a complex system onto which various disorders act and due to their changeable act result into the changes of working temperature of MDE. System dynamic approach in the analysis of MDE enable us to obtain the answer to the question "What if…" in other words we arrive at the solution what the reaction would be at the changes of any variable in the cooling system. The paper has shown: dynamic and static regime of work, mathematic model of the cooling system of MDE, simulation model in POWERSIM programme language and diagrams of the flows of water. [ABSTRACT FROM AUTHOR]

The numerous health problems that arise from working with the computer may be the result of visual, statodynamic and psycho-physiological strain. The problems may be completely removed or prevented by installing suitable equipment at the workplace, by correct body posture, through correction of refractory anomalies and through adequate organisation. The paper lists and describes the syndromes, illnesses, risks, causes of illness and prevention measures. It is the responsibility of the employer to remove all hazards and harmful effects from the workplace, allow scheduled breaks and provide relaxation exercises and eye checks by an occupational medicine specialist. [ABSTRACT FROM AUTHOR]