Summary: Application of the following three metaheuristic algorithms to Travelling Salesman Problem (TSP) were explored: Simulated Annealing (SA), Tabu Search (TS), and Ant Colony System (ACS). The performance of software implementation of these approaches was experimentally studied using four test instances of TSP with known optimal solutions. As a result of the experiment, features of solutions found in a set of trials by each algorithm in the same fixed amount of time were assessed. The implementation details of the algorithms and the parameters used for the experiment were thoroughly described. Optimization process was visualized for every algorithm. Conclusions were made regarding the effectiveness of studied algorithms for the different sizes of problem instances used in the experiment.
Key words: travelling salesman problem, metaheuristic optimization algorithms, simulated annealing algorithm, tabu search algorithm, ant colony system algorithm.
Summary: The paper presents the mathematical model of the process contact membrane distillation. The proposed simplified mathematical model of СMD , which takes into account the change in the temperature of the solution and the distillate channel along the membrane and the membrane module height . As well as describing the change in temperature of steam flow in the pores of the membrane. An algorithm for calculating mathematical model of contact membrane distillation.
Keywords: mathematical model, contact membrane distillation, heat transfer, mass transfer, distillate channel.
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
Summary: This article describes conceptual difference between imperative, reactive paradigms and functional reactive style advantages in Android development. Solutions of imperative paradigm main problems are described.
Key words: Android, functional reactive paradigm.
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
Summary: Basic problems of recommendation systems, basic types of it and difference between them were investigated. Also there is description of modern algorithm SVD and results of its work.
Key Words: recommendation systems, forecasting, computer science.
The global problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-Prague-Vienna, December 28, 2015)
Actual problems of Economics and Finance: Abstracts of IV International scientific-practical conference (Kiev-St. Petersburg-Vienna, November 30, 2015)
Global problems of economics and finance: Abstracts of III International scientific-practical conference (Kyiv-Prague-Vienna, 30 September 2015).
Summary: The purpose of writing this article was to compare several methods of development and access management in an enterprise Java application. There was a problem with the use of a particular method depending on the needs of the subject area. Also proposed possible solutions.
Keywords: ECM application, URL, business-to-business, class, annotation.
Global problems of the economy and finances: abstracts of the II International scientific and practical conference (Kyiv-Prague-Vienna, May 28, 2015).
Global problems of the economy and finances: abstracts of the II International scientific and practical conference (Kyiv-Prague-Vienna, May 28, 2015).
Actual problems of the economy and finances: abstracts of the II International scientific and practical conference (Kyiv-St. Petersburg-Vienna, April 29, 2015).
Актуальные проблемы экономики и финансов: тезисы докладов Международной научно-практической конференции (Киев-Санкт-Петербург-Вена, 29 декабря 2014 г.). – Киев-Санкт-Петербург-Вена, 2014.
