Consideration of the Aspects of the Transportation Systems Microscopic Model Application as Part of a Decision Support System
The article presents the experience in using decision support system ...(DSS) when managing urban transport system (UTS) and a possibility of using microscopic modelling as an integral part of the decision-support system (DSS) when managing the urban TS. To illustrate the problem and a possible DSS-based solution, an example of a specific project has been examined, where microscopic modelling was used for the analysis of possible reconstruction of a transport system (TS) fragment in the city of Riga, - which was performed in 2010 in the laboratory of applied software systems of the Transport and Telecommunication Journal Institute (in Riga). The project goal was the consideration of expediency for implementation of a pedestrian area in the street of city centre with the existing street traffic. The article formulates some problems that occurred in the process of development and application of simulation model for analysing various scenarios; some possible alternatives of their solution are suggested.
An alternative of possible DSS architecture for managing TS in Riga is suggested; some requirements to the data handling and organization in the system are examined. Special attention has been paid to the problem of synchronizing the data handling of macroscopic and microscopic models of urban TS. The article formulates the requirements to organization of data transmission interface between macroscopic and microscopic data. The suggested DSS concept can be used when solving various problems of transportation planning.
Straipsnyje apžvelgiamos Anderson pasiūlytos informacijos integracijos ir funkcinio matavimo teorijos. Nagrinėjamas funkcinio matavimo panaudojimas psichofizikoje, psichologinėje sprendimų priėmimo ...teorijoje ir raidos psichologijoje. Daroma išvada, kad šis požiūris yra svarbus įvairiose psichologijos srityse.
For Latvia with incoming into the European Union big opportunities in the international markets have opened. Paper purpose is to investigate influence of international integration processes on ...development of economy of Latvia. In paper various indicators of a national economy before and after incoming into EU are compared. In paper it is defined that joining to EU has increased for Latvia net grants from EU budget. But grants still do not promote development of economy of Latvia, but more stimulate development of internal demand. For demand gain satisfaction, in the conditions of poorly developed internal producing, from abroad the various goods are imported into Latvia, negative difference of export and import is increase. Also inflow of the capital to Latvia after incoming into EU is not used for positive changes in internal economy, and directed to the branches related with finance movings. Actually the industries have not felt essential inflow of the capital. After incoming into EU Latvia has started to export labour force. As a result of migration of labour in Latvia the rate of unemployment has decreased, the wages are grown, expenses on a labour that has grown, that reduced an export potential of internal products. EU grants, capital inflow, gain of wages has caused an inflation gain in Latvia. Considering that together with inflation purchasing capacity of inhabitants has grown, it is possible to draw a conclusion that the population well-being has grown. These processes mainly have short-term character. Migration will decrease, considering a gain of wages or because of reduction of labour resources; inflow of the speculative capital will stop because of insufficiency of reliable pledges. It is possible to assert that they will stop, when the standard of living in EU and Latvia will be approximately identical, i.e. in the end of cohesion process in EU. Most stabile is relation of grants and import. Grants are provided to reduce dependence of the state on import but on the contrary, grants increase import volume. Latvia still cannot find the specialisation in EU and in the global markets. Therefore it became dependent on grants of EU and on international help. Definition of specialisation and an effective using of grants could change situation and promote economy development in Latvia.
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