Waldemar Karwowski

Swarm Based System for Management of Containerized Microservices in a Cloud Consisting of Heterogeneous Servers

Centralized and hybrid container orchestration systems are a bottleneck for the scalability of cloud applications. Due to data replication costs the cluster can consist only of a handful of servers. A decentralized peer-to-peer systems are needed. We propose such a system whose architecture is the same as the microservice architecture of the cloud application it manages. It can potentially offer performance improvements with respect to the existing centralized container orchestration systems.

Algorithms for Random Maps Generation and Their Implementation as a Python Library

Random map generation has application in strategy computer games, terrain simulators, and other areas. In this paper basic assumptions of a library for random maps generation are presented. It uses both value noise and diamond square computer graphics algorithms, as well as newly invented algorithms for biomes creation and river generation. Complete library implementation with an example use in a separate application is explained in detail. Basic issues related to developing programming libraries and random map generations are also discussed.

Pattern Recognition Method for Classification of Agricultural Scientific Papers in Polish

Calculation of text similarity is an essential task for the text analysis and classification. It be can based, e.g., on Jaccard, cosine or other similar measures. Such measures consider the text as a bag-of-words and, therefore, lose some syntactic and semantic features of its sentences. This article presents a different measure based on the so-called artificial sentence pattern (ASP) method. This method has been developed to analyze texts in the Polish language which has very rich inflection. Therefore, ASP has utilized syntactic and semantic rules of the Polish language. Nevertheless, we argue that it admits extensions to other languages. As a result of the analysis, we have obtained several hypernodes which contain the most important words. Each hypernode corresponds to one of the examined documents, the latter being published papers from agriculture domain written in Polish. Experimental results obtained from that set of papers have been described and discussed. Those results have been visually illustrated using graphs of hypernodes and compared with Jaccard and cosine measures.

A DEGENERATE BOUNDARY VALUE PROBLEM FOR A FUNCTIONAL DIFFERENTIAL EQUATION

2 Solution» of olass C of nonlinear boundary value problem (BVF) fo r funct ional d i f f e r e n t i a l equations were studied by L.J . Grimm and K. Sohmitt [ 2 ] . Subsequently J . Sisenfeld and V. Lakshmikantham [ 3 ] , T.C.L. Hutson [ 5 ] , S. Heikkila, J.W. Hooney and S. Seikkala [4] and others have examined the existenoe, uniqueness and comparison r e s u l t s fo r oer ta in nonl inea r BVP fo r funct ional d i f f e r e n t i a l equations. Solutions of degenerate BYP fo r d i f f e r e n t i a l equations were dealt with by T. Jonsson [6]» The present paper general ises the r e s u l t s of papers [2] and [ 6 ] . Ve prove the existence and uniqueness of solutions of c lass C of a degenerate BVP f o r a funct ional d i f f e r e n t i a l equation. A fu r the r existenoe r e su l t i s based on some funot ional d i f f e r e n t i a l inequa l i t i e s . Ve give two simple examples to i l l u s t r a t e main theorems. Let us consider a degenerate BVP fo r funct ional d i f f e r en t i a l equation of the form