Application of bioinformatics methods to recognition of network threats, Journal of Telecommunications and Information Technology, 2007, nr 4

Bioinformatics is a large group of methods used in biology, mostly for analysis of gene sequences. The algorithms developed for this task have recently found a new application in network threat detection. This paper is an introduction to this area of research, presenting a survey of bioinformatics methods applied to this task, outlining the individual tasks and methods used to solve them. It is argued that the early conclusion that such methods are ineffective against polymorphic attacks is in fact too pessimistic

Terrorist attack on the gas system in Tiguentourine, Amenas, Algeria, in January 2013, as an example of new threats to critical energy infrastructure and the internal security of the state

The aim of this article is to present the increasing significance of new threats to the critical energy infrastructure and security of a contemporary state. This attempt is based on the case of the January 2013 terrorist attack on an international natural gas complex Tiguentourine near the African town of In Amenas in Alegria. The case delivers an interesting example of interconnecting aspects of energy security, counter-terrorism efforts and international relations. The proper functioning of energy infrastructure in contemporary states faces a broad range of security challenges, including terrorist threats. Neglected protection of such infrastructure can result in a grave internal threat, and have economic, environmental and humanitarian consequences. Therefore, protecting the energy infrastructure from deliberate physical and cyberterrorist (web-based) attacks and disruptions, which mitigates damage and enhances the resilience of critical energy infrastructure must be a subject for enhanced bilateral and multilateral cooperation among countries in the Euro-Atlantic security zone and their allies.Celem artykułu jest przedstawienie kwestii wzrastającego znaczenia nowych obszarów zagrożeń dla energetycznej infrastruktury krytycznej i bezpieczeństwa współczesnego państwa. Próba ta została podjęta na podstawie przypadku ataku terrorystycznego na międzynarodową instalację gazową Tiguentourine w algierskim In Amenas, który miał miejsce w styczniu 2013 r. Incydent ten wydaje się trafnie obrazować współzależność szeregu czynników i wieloaspektową złożoność tego typu sytuacji. Splotły się tu kwestie przeciwdziałania aktywności terrorystycznej, ale i bezpieczeństwa energetycznego oraz uwarunkowania polityczne i dyplomatyczne. Funkcjonowanie energetycznej infrastruktury krytycznej współczesnego państwa jest narażone na wiele zagrożeń, włącznie z zagrożeniem terrorystycznym. Zaniedbania w wyżej wymienionym zakresie mogą skutkować poważnymi konsekwencjami nie tylko dla systemu energetycznego i gospodarczego państwa, ale – pośrednio – także dla jego bezpieczeństwa wewnętrznego. Nowe rodzaje obszarów ryzyka dla obiektów energetycznej infrastruktury krytycznej (ataki fizyczne, sieciowe/ cybernetyczne) wymagają pogłębienia bilateralnej i wielostronnej kooperacji między państwami euroatlantyckiej strefy bezpieczeństwa oraz ich sojusznikami

RESEARCH ON THE INFLUENCE OF BLOWING AGENT ON SELECTED PROPERTIES OF EXTRUDED CELLULAR PRODUCTS

As a part of a more comprehensive research project, the present study was undertaken to investigate the effect of the type and content of blowing agents in the polymeric materials being processed on the structure and selected physical and mechanical properties of the obtained extrusion parts. In the experiment, the content of the blowing agent (0–2.0% by mass), fed into the processed polymer were adopted as a variable factor. In the studies presented in the article, the blowing agents of endothermic decomposition characteristics (Hydrocerol BIH 70, Hydrocerol BM 70) and the exothermic decomposition characteristics (PLC 751) occurring in the granulated form with a diameter of 1.2 to 1.8 mm were used. Based on the results of investigating porosity, porous structure image analysis as well as microscopic examination of the structure, it has been found that the favorable content of the blowing agent in the polymeric material should be of up to 0.8% by mass. With such a content of the blowing agent in the polymeric material, favorable strength properties are retained in porous parts, the pore distribution is uniform and the pores have similar sizes

Laboratory stand for testing the elements and automatic control systems

Artykuł jest prezentacją stanowiska laboratoryjnego umożliwiającego modelowanie i badanie własności dynamicznych, elementów i układów regulacji automatycznej. Stanowisko zostało wykonane przez studentów, jako praca dyplomowa, pod kierunkiem pracowników Katedry Automatyki i Inżynierii Pomiarowej, Wydziału Transportu, Elektrotechniki i Informatyki, Uniwersytetu Technologiczno-Humanistycznego w Radomiu. Jest wykorzystywane do zajęć laboratoryjnych z przedmiotu Podstawy Automatyki.The paper presents a laboratory station enabling modelling and testing of linear regulation elements and systems. The station was built by students supervised by employees of the Department of Automatic Control and Measurement Engineering, of the Faculty of Transport, Electrical Engineering and Informatics of the UTH of Radom and is used during laboratory classes of the course in Automatics

Trudności operacyjne resekcji wyrośli chrzęstno-kostnych. Opis 4 przypadków

Osteochondromas constitute one of the most common benign bone tumours. They can grow in different bones. Surgical difficulties result from osteochondromas located in the pelvis or spine. Sometimes, however, osteochondromas located in long bones can cause surgical issues. The objective of the study was to present surgical difficulties of excising osteochondromas in long bones. Between 2016-2019, 53 patients with osteochondromas were treated, including 41 in long bones. Difficulties occurred when osteochondromas grew in the area of the neurovascular bundle and caused pressure - one patient experienced damage to the brachial artery. Problems occurred with the excision of osteochondromas growing between the tibia and the fibula.Wyrośla chrzęstno-kostne są jednym z najczęstszych nowotworów łagodnych kości. Mogą wzrastać się w rożnych kościach. Trudności operacyjne stwarzają wyrośla zlokalizowane w miednicy lub kręgosłupie. Czasami jednak te zlokalizowane w kościach długich mogą sprawiać problemy operacyjne. Celem pracy było przedstawienie trudności operacyjnych wyrośli chrzęstno kostnych kości długich. W latach 2016-2019 leczono 53 chorych z wyroślami chrzęstno-kostnymi, w tym 41 w kościach długich. Trudności występowały, gdy wyrośl rosła w okolicy pęczka naczyniowo-nerwowego i powodowała jego ucisk – u jednej chorej doszło do uszkodzenia tętnicy ramiennej. Kłopoty wystąpiły przy wycinaniu wyrośli rosnącej między piszczelą a strzałką

Random forest assessment of correlation between environmental factors and genetic differentiation of populations: Case of marine mussels Mytilus

Summary: The novel machine learning technique Random Forest (RF) was used to test if the genetic differentiation of populations of marine species may be related to any of the key environmental variables known to shape species distributions. The study was performed in North and Baltic Sea characterized by strong gradients of environmental factors and almost continuous distributions of Mytilus mussel populations. Assessment of the species identity was performed using four nuclear DNA markers, and previously published single nucleotide polymorphism (SNP) data. A general pattern of cline variation was observed with increasing Mytilus trossulus share towards the eastern Baltic Sea. Average allele share rose to 61% in Höga Kusten, Gulf of Bothnia. All Baltic Sea samples revealed a strong introgression of Mytilus edulis and a limited introgression of M. trossulus through the Danish Straits.The studied environmental variables described 67 and 68% of the variability in the allele frequencies of M. edulis and M. trossulus. Salinity defined over 50% of the variability in the gene frequencies of the studied Mytilus spp. populations. Changes along this environmental gradient were not gradual but instead a significant shift from gene dominance was found at a salinity of 12 PSU. Water temperature and the trophic status of the sea area had only moderate association with the gene frequencies. The obtained results showed that the novel machine learning technique can be successfully used for finding correlations between genetic differentiation of populations and environmental variables and for defining the functional form of these linkages. Keywords: Marine environment, Spatial distribution, Seascape genetics, Nuclear DNA markers EFbis, Glu-5′, ITS, M7 and Single Nucleotide Polymorphism, Baltic Se

Trans-Atlantic Distribution and Introgression as Inferred from Single Nucleotide Polymorphism: Mussels Mytilus and Environmental Factors

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