bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nonlinear modelling and optimal control via Takagi-Sugeno fuzzy techniques: A quadrotor stabilization
Authors: Pokorný Miroslav , Dočekal Tomáš , Rosinová Danica 
Published: May 2020

AbstractUsing the principles of Takagi-Sugeno fuzzy modelling allows the integration of flexible fuzzy approaches and rigorous mathematical tools of linear system theory into one common framework. The rule-based T-S fuzzy model splits a nonlinear system into several linear subsystems. Parallel Distributed Compensation (PDC) controller synthesis uses these T-S fuzzy model rules. The resulting fuzzy controller is nonlinear, based on fuzzy aggregation of state controllers of individual linear subsystems. The system is optimized by the linear quadratic control (LQC) method, its stability is analysed using the Lyapunov method. Stability conditions are guaranteed by a system of linear matrix inequalities (LMIs) formulated and solved for the closed loop system with the proposed PDC controller. The additional GA optimization procedure is introduced, and a new type of its fitness function is proposed to improve the closed-loop system performance.
An in-line coaxial-to-circular waveguide transition at X band
Authors: Xia Lei , Li Jia-Lin , Ji Zhuang , Gao Shan-Shan 
Published: May 2020

Abstract
A wideband transition from the coaxial TEM mode to the TM01 mode of the circular waveguide with in-line input-output architecture is proposed in this paper. The transition employs multi-stage stepped impedance transformer to achieve wideband responses. Both mode transition and impedance matching characteristics are discussed in the paper. A demonstrator is developed and validated experimentally. As compared with some recently published reports, a better performance is observed. Moreover, the developed transition could facilitate the mechanical fabrication more easily. It can be found wide applications such as the circular waveguide based slot array antenna, the nondestructive detection, cracks inside the conductive pipes, and so on.
Integrated SolidWorks and Simscape platform for the design and control of an inverted pendulum system
Authors: Alkamachi Ahmed 
Published: May 2020

Abstract
A single inverted pendulum on a cart (SIPC) is designed and modeled physically using SolidWorks. The model is then exported to the Simulink environment to form a Simscape model for simulation and test purposes. This type of modeling uses a physical grid tactic to model mechanical structures. It requires connection of the physical elements with physical signal converter to define the implicit system dynamics to be modeled. The integration between the SolidWorks and Simscape eliminates the need of deriving the mathematical model and provides a platform for the rapid controller design for the system. State feedback control scheme is proposed, designed, and tuned aiming to maintain the pendulum in the upright place while tracking the desired cart position. Several simulation cases are studied to prove the controller abilities. In order to examine the controller robustness, disturbance rejection and noise attenuation capabilities are also discovered.
Rock Beats the Wall? On Commemorative Practices in Post-Soviet Russia
Authors: Cingerová Nina , Dulebová Irina 
Published: May 2020

Abstract
This paper focuses on the case analysis of the memorial to the victims of state terror – the Wall of Grief (Stena skorbi) – which was unveiled on the eve of the 100th anniversary of the November 7, 1917, coup d’état. Using this example, we have attempted to elaborate a structure for a more complex analysis of the memory of past regimes’ manifestation and to create a methodological base for their comparison. We have based our research on the discourse theory by the so-called Essex School, the social semiotics by Kress, and the procedures of the critical discourse analysis. The procedure that we have considered relevant consists of the following: (a) description of the social context in which the memorial was manifested as a piece of evidence; (b) semiotic analysis of the memorial artifact; (c) analysis of verbal practices, as well as written and spoken texts that “explained” the memorial; and (d) analysis of nonverbal practices, namely, rituals. On the basis of our case study, we have come to the conclusion that when carrying out a semiotic analysis and the analysis of verbal and nonverbal practices in the case of the Russian public discourse, it is especially relevant to pay attention not only to widening vs. narrowing of the chronological framework, generalization vs. concretization, and specification of the traumatic experience but also to the question of framing of the memorial. In regard to the semiotic analysis, the extent of indexicality is considered to be very important in the sense of the bodily connection with an element of the commemorated event that bestows “truthfulness” and authenticity on the memorial. We assume that particularly present-day Russia, where explicit attempts to reinterpret the history of the authoritarian communist state and attempts to instrumentalize the totalitarian period according to the vector of the current political direction may be seen, is a relevant object of this kind of research.
Requirements of the 4th Railway Package Towards Safety Management Systems
Authors: Chruzik Katarzyna , Graboń-Chałupczak Marzena 
Published: May 2020

Abstract
In accordance with the new requirements of rail law, from June 2020, a railway undertaking or rail infrastructure manager applying for a single safety certificate/ authorization should demonstrate compliance with the relevant requirements of the Safety Management System (SMS) set out in the Commission delegated regulation (UE) 2018/762. To this end, he should provide proof to the national safety authority or, where applicable, to the European Union Agency for Railway Safety, of the establishment of a safety management system in accordance with Art. 9 of Directive (EU) 2016/798. According to Regulation, the organization should describe the scope of the safety management system, indicating which parts of the business are covered by it, considering legal requirements. The publication attempts to identify necessary changes and additions to hitherto functioning SMS.
Decision Trees in the Tests of Artillery Igniters
Authors: Ampuła Dariusz 
Published: May 2020

Abstract
The article addressed the method for building decision trees paying attention to the binary character of the tree structure. The methodology for building our decision tree for KW-4 igniters was presented. It involves determining features of tested igniters and applied predictors, which are necessary to create the correct model of the tree. The classification tree was built based on the possessed test results, determining the adopted post-diagnostic decision as the qualitative independent variable. The schema of the resultant classification tree and the full structure of this tree together with the results in end nodes were shown. The obtained graphic and tabular sequence of the designed tree was characterized, and the prediction accuracy was evaluated on the basis of the resultant matrix of incorrect classifications. The quality of the resultant predictive model was assessed on the basis of the chosen examples by means of the ‘ROC’ curve and the graph of the cumulative value of increase coefficient.
Reliability Approach to Resilience of Critical Infrastructure Impacted by Operation Process
Authors: Magryta Beata 
Published: May 2020

Abstract
The paper focuses on a critical infrastructure reliability and resilience to its operation process and particularly is devoted to critical infrastructure reliability and resilience indicators. First, the model of critical infrastructure reliability without considering outside impacts is proposed and applied to determine the port oil terminal reliability indicators. In the next step, the operation impact model of critical infrastructure reliability is created and applied to reliability and resilience analysis of the port oil terminal. The comparison of the port oil terminal critical infrastructure reliability indicators without considering outside impacts with indicators considering impact of its operation process is performed. A significant influence of the operation process on the port oil terminal reliability is proved.
Monte Carlo Simulation Approach to Reliability Analysis of Complex Systems
Authors: Dąbrowska Ewa 
Published: May 2020

Abstract
The article presents new results concerned with general procedures and algorithms to assess the reliability of complex systems with various reliability structures. The analytical method and based on it the simulation method were used to estimate the reliability characteristics of the port grain transportation system. Finally, the general simulation algorithm was developed to evaluate the reliability characteristics of ageing complex systems. In this case, the systems operating processes were described by any distributions of sojourn times in operation states and the reliability functions of their components were modified in such a way that these components are not characterized by a “lack of memory”. The application of this algorithm has been illustrated by the results for exemplary complex two-state systems.
Effect of electromagnetic field exposure on mouse brain morphological and histopathological profiling
Authors: Zymantiene Judita , Juozaitiene Vida , Zelvyte Rasa , Oberauskas Vaidas , Spancerniene Ugne , Sederevicius Antanas , Aniuliene Albina 
Published: May 2020

Abstract

Introduction
Mobile phones (MP) and other electronic and communication devices that are used daily expose users to electromagnetic fields (EMF) and contribute to an increasing incidence of neurological disorders. Brain tissue is the closest organ to the MP as it operates, thus the influence of MP radiation on brain tissue is of particular concern, although research is still inconclusive. The present study investigated the possible effect of an EMF (1,350–1,375 megahertz (MHz)) from an MP on morphological and histopathological profiles in the mouse brain.

Material and methods
Healthy BALB/c mice were assigned to three equal groups (a control and two experimental groups, n = 10 each). Experimental mice were exposed to EMFs continuously for 72 h, those of experimental group I to a 1,350 MHz field at a specific absorption rate (SAR) of 4.0 W/kg, and group II to a 1,375 MHz field EMF at an SAR of 4.0 W/kg. Brain segmentation and histopathological analysis were applied to detect changes in the morphometric parameters of the brain lobes and identify pathological lesions, respectively.

Results
Histopathology results revealed shrinkage of pyramidal neurons, presence of mild perivascular and perineural oedema, and some vacuolation of neurons and glial cells derived from mouse great hemispheres. The lesions also included reduction of Purkinje cells, vacuolisation of neurons and glial cells, and interstitial oedema in the cerebellum.

Conclusion
MP distance of 3 cm from the cage may induce appreciable morphological changes in mouse brain structures; therefore, more comprehensive research is essential for assessment of safe distance. These pronounced effects may interfere with the results of laboratory tests on murine experimental models in veterinary or biomedical research.
Malignant catarrhal fever in cattle in the Irkutsk Region
Authors: Zakharova Olga , Toropova Nadezhda , Burova Olga , Titov Ilya , Meltsov Ivan , Blokhin Andrey 
Published: May 2020

Abstract

Introduction
Malignant catarrhal fever (MCF) is a rare, under-explored lethal viral infection of cattle with gammaherpesvirus aetiological agents. Most often, the disease occurs on farms where cattle and sheep are kept together. However, other trigger mechanisms and environmental factors contribute. This study investigates the causation of MCF.

Material and Methods
An outbreak of MCF occurred in June - August 2017 in Kharchev village in Irkutsk Oblast, Russia. In this paper, we provide epidemiological (sanitary status of pastures, watering places, and premises) and weather data during the outbreak, and descriptions of the clinical signs and post-mortem changes in cattle. The virus was detected and isolated from pathological material samples and identified by molecular methods.

Results
Extreme weather conditions, mixed-herd cattle and sheep farming, and unsatisfactory feed quality contributed to the outbreak. A virus related to herpesvirus OvHV2 was isolated and typed (MCF/Irkutsk/2017). Phylogenetic analysis showed its close genetic relationship to isolates from cattle and sheep in Germany, USA, and the Netherlands.

Conclusion
Sporadic outbreaks of MCF caused by biotic and abiotic factors together are typical for the Russian Federation, and the Irkutsk outbreak epitomised this. Temperature anomalies caused pasture depletion, resulting in feed and water deficiency for grazing animals and dehydration and acidosis. Heat stress in animals ultimately led to the occurrence of MCF in the herd.
Monitoring of corrosive environment aggressiveness and development of a sensor for monitoring of the water film in exposure chamber
Authors: Bureš R. , Rak P. , Stoulil J. 
Published: May 2020

Abstract
Exposure of copper in corrosive environment is possible way, how to obtain artificial patina. Various solutions based on chloride, ammonia or polysulfide are commonly use in this purpose. Furthermore, it appears that the patina is also formed in an environment with an increased concentration of SO2 in the atmosphere. This procedure was tested in a small (30 l) exposure chamber, where the aggressiveness of the environment was monitored and where the effect of alternating the condensation and drying phases was shown to be positive. Based on this experiment, a 2 m3 pilot chamber was designed for which a water film sensor was developed and tested to ensure drying of the object surface. Monitoring of the aggressiveness of the environment showed that the pH and SO2 concentrations in the atmosphere are stable after approximately 5 hours and the ideal input SO2 concentration is 17.7 g m-3 at which the pH stabilizes at 2.7-3. By recording the voltage variation on the sensor, it was possible to monitor the formation and drying of the water film during the cycling of the condensation and drying phases.
Development of corrosion flaws for the production of realistic test specimens
Authors: Hodač J. , Fulín Z. , Mareš P. , Veselá J. , Chocholatý O. 
Published: May 2020

Abstract
To produce realistic test specimens with realistic flaws, it is necessary to develop appropriate procedure for corrosion flaw production. Tested specimens are made from steels commonly used in power plants, such as carbon steels, stainless steels and their dissimilar weldments. In this study, corrosion damage from NaCl water solution and NaCl water mist are compared. Specimens were tested with and without mechanical bending stress. The corrosion processes produced plane, pitting and galvanic corrosion. On dissimilar weldments galvanic corrosion was observed and resulted to the deepest corrosion damage. Deepest corrosion flaws were formed on welded samples. The corrosion rate was also affected by the solution flow in a contact with the specimens, which results in a corrosion-erosive wear. Produced flaws are suitable as natural crack initiators or as realistic corrosion flaws in test specimens.
Postmortal Issues of Smolensk Tragedy Against the Obligations of Art. 2 of European Convention on Human Rights
Authors: Wedeł-Domaradzka Agnieszka 
Published: May 2020

Abstract
The main aim of the study is to analyze posthumous problems that concern the victims of the Smolensk disaster in the context of positive obligations of the state. The first element of the analysis will concern the standards of dealing with the bodies of disaster victims as soon as they occur. The second aspect will include the obligation to notify of death along with other obligations and information on victims. Then, issues related to the transport of corpses and the opening of coffins will be described, and finally the regulations regarding uninterrupted burial. The analysis of the above issue presented in the work will be carried out taking into account regional human rights protection standards and the ECtHR’s judicial practice. Both soft and hard law standards will be included in the analysis.
Responsibility of Russia and Poland for the Smolensk Catastrophe from the Perspective of European Convention on Human Rights
Authors: Jasudowicz Tadeusz 
Published: May 2020

Abstract
Smolensk Catastrophe is not only about the question of clarifying facts, but also the one of responsibility stemming from them on the grounds of European Convention on Human Rights, and being more precise from its art. 2: The right to life. The article includes both negative obligations, such as the prohibition of depriving an individual of life, as well as positive ones regarding the establishing of effective regulations in criminal law, providing legal and administrative procedures aiming at e.g. preventing the acts of life deprivation, including the ones referring to procedural obligations concerning the conduct of a proper and effective investigation. Responsibility is shared by both parties of the Convention: Russia and Poland. The first of them ought to be responsible for depriving the Catastrophe casualties of their lives, not only in the event of an attack and explosion, but also in the context of TU 154 renovation, the manner of organizing the visit, dividing it between 7th and 10th April 2010, the level of securing the quality of service at the North Smolensk airport, conducting the investigation and keeping the evidence (the wreck, black box, etc.), which made it impossible for Poland to conduct the effective investigation. Poland, on the other hand, is responsible for the lack of applying appropriate legal and administrative procedures, as well as preventive and controlling measures, inappropriate conduct of aviation investigation by Military Prosecutor Office, as well as the lack of an effective investigation indicated in art. 2 of the Convention. Poland ought to be held responsible also for the manner of organizing the visit. The responsibility of a state on the basis of the Convention includes detecting, pursuing and punishing individuals responsible for actions and cessations determined as a punishable offence of negligence and not fulfilling ones duties. Therefore there certainly was the situation of breaching the material and procedural obligations stemming from art. 2 of the Convention.
Crevasse splays within a lignite seam at the Tomisławice opencast mine near Konin, central Poland: architecture, sedimentology and depositional model
Authors: Chomiak Lilianna 
Published: May 2020

AbstractThe present article focuses predominantly on sandy deposits that occur within the Middle Miocene lignite seam at the Tomisławice opencast mine, owned by the Konin Lignite Mine. As a result of mining activity, these siliciclastics were available for direct observation in 2015–2016. They are situated between two lignite benches over a distance of ~500 m in the lower part and ~200 m in the higher part of the exploitation levels. The maximum thickness of these sandy sediments, of a lenticular structure in a S–N cross section, is up to 1.8 m. With the exception of a thin lignite intercalation, these siliciclastics comprise mainly by fine-grained and well-sorted sands, and only their basal and top layers are enriched with silt particles and organic matter. Based on a detailed analysis of the sediments studied (i.e., their architecture and textural-structural features), I present a discussion of their genesis and then propose a model of their formation. These siliciclastics most likely formed during at least two flood events in the overbank area of a Middle Miocene meandering or anastomosing river. Following breaching of the natural river levee, the sandy particles (derived mainly from the main river channel and levees) were deposited on the mire (backswamp) surface in the form of crevasse splays. After each flooding event, vegetation developed on the top of these siliciclastics; hence, two crevasse-splay bodies (here referred to as the older and younger) came into existence. As a result, the first Mid-Polish lignite seam at the Tomisławice opencast mine is currently divided in two by relatively thick siliciclastics, which prevents a significant portion of this seam from being used for industrial purposes.
Role of Balancing Markets in Dealing with Future Challenges of System Adequacy Caused by Energy Transmission
Authors: Junghans G. , Silis A. , Marcina K. , Ertmanis K. 
Published: May 2020

Abstract
The national energy and climate plans developed by the Baltic States for the period up to 2030 foresee a significant increase in the share of renewable energy in final consumption. Therefore, the development of wind, solar and distributed generation in the Baltic electricity system is expected to increase significantly in the next decade and, thus, the need for balancing capacity will increase. The planned synchronisation of the Baltic power system with the power system of Continental Europe in 2025 will also increase the need for frequency restoration and balancing reserves. At the same time, the shutdown of uncompetitive thermal power plants in the Baltics reduces centralized generation capacity. If this trend continues, the risk of electricity supply shortages will increase in the future. Therefore, it is important to identify activities that help mitigate this risk and take timely actions.
Allele and Genotype Frequencies of the Κappa-Casein (CSN3) Locus in Macedonian Holstein-Friesian Cattle
Authors: Adamov Nikola , Atanasov Branko , Ilievska Ksenija , Nikolovski Martin , Dovenska Monika , Petkov Vladimir , Dovenski Toni 
Published: May 2020

Abstract
The bovine kappa-casein (κ-CN) is a phospho-protein with 169 amino acids encoded by the CSN3 gene. The two most common gene variants in the HF breed are CSN3*A and CSN3*B while CSN3*E has been found with lower frequency. The aim of this study was to optimize a laboratory method for genotyping of these three alleles as well as to determine their genotype and allele frequencies in the HF cattle population in the Republic of North Macedonia. Genomic DNA was extracted from full blood from 250 cows. The target DNA sequence was amplified with newly designed pair of primers and the products were subjected to enzymatic restriction with HindIII and HaeIII endonucleases. Genotype determination was achieved in all animals. The primers successfully amplified a fragment of 458 bp and the digestion of this fragment with both endonucleases enabled differentiation of five different genotypes with the following observed frequencies: AA (0.39), AB (0.29), BB (0.16), AE (0.10), and BE (0.06). The estimated allele frequencies were: CSN3*A (0.584), CSN3*B (0.336) and CSN3*E (0.08). The observed genotype frequencies differed significantly (P<0.01) from those that would be expected under HW equilibrium, while the fixation index (F=0.17) indicated moderate heterozygosity deficiency. Nevertheless, the CSN3*B allele was present with relatively high frequency which should be used to positively select for its carriers, since increasing its frequency could help to improve the rheological properties of the milk intended for cheese production.