bluuebunny/crossref_metadata_2025 huggingface dataset:
A rare case report on pediatric shellfish allergy
Authors: Ananta Jois , Betsy Mathew
Published: December 2020

Shellfish are extensively consumed worldwide because of their nutritional value. In general they are good sources of low-fat protein rich in several essential vitamins and minerals as well as in the essential nutrients omega-3 long-chain polyunsaturated fatty acids (n-3 LCPUFAs) [1]. Shellfish belongs to “The Big 8” food groups causing allergy, which often does not outgrow during childhood. However, increase in IgE – mediated sea food allergy has been linked to shellfish. Seafood- associated shellfish include crustaceans & molluskans [2]. These may cause mild local symptoms & lead to severe systemic anaphylactic reactions by ingestion, inhalation, or contact. Globally, the prevalence of shellfish allergy estimated to be 0.5% to 2.5% of the general population [3]. There are limited data showing the prevalence of shellfish allergy in children.
Seasonal change and COVID-19: Will the harmattan season lead to an increase in COVID-19 cases in Nigeria?
Authors: Prince Chiagozie Ekoh
Published: December 2020

The harmattan season, which is a period characterized by low temperature, dry air and increased air pollution leads to widespread airborne disease and exacerbation of pre-existing conditions, should be recognized as a period of potential risk of high COVID-19 infection rates. This period also coincides with the Christmas season which comes with so many festivities and can become a COVID-19 super-spreader. With many Nigerians now abandoning the non-pharmaceutical protection measures against COVID-19, the harmattan season and the forthcoming spike in social gatherings might usher in the second wave of the virus which can potentially be more catastrophic. There is need for the Nigerian government to start planning and instituting new protection measures and guidelines for safe Christmas celebration while also educating and encouraging the populace to adopt the protection measures recommended by experts.
Population reconstruction as an informative tool for monitoring chamois populations
Authors: Reiner Rudolf , Zedrosser Andreas , Zeiler Hubert , Hackländer Klaus , Corlatti Luca
Published: December 2020

Knowledge of population trends is of key importance for sustainable management of wildlife and finding reliable and cost–effective monitoring methods is therefore of great interest. In two populations of Alpine chamois Rupicapra rupicapra, we collected data on mortality from 12 424 individuals hunted or found dead and population size data based on ground counts over a period of 28 years. Our study had three aims: 1) we investigated if changes in population size obtained with a simple deterministic population reconstruction (DPR) approach using hunting and natural mortality covary with population size estimates obtained from ground count data. 2) We investigated if the performance of DPR is affected by the removal of natural mortality data. 3) We assessed how many years of mortality data are needed to obtain consistent population trends using DPR. Our results suggested that 1) population abundance from mortality data using DPR significantly and positively correlated with population abundance obtained with ground counts. 2) DPR without natural mortality data performed similarly as compared to DPR using full data (hunting and natural mortality). 3) Consistent estimates of population trends can be obtained with ≥10 years of mortality data, however, this time span was influenced by the mean age at death, which in turn was affected by the local hunting regime. Our results suggest that DPR and ground counts perform similarly for the estimation of temporal trends in Alpine chamois abundance. The consistence of ground counts and DPR supports the use of these methods as reliable tools for tracking abundance of chamois populations over time. However, the reliability of abundance estimates using DPR may vary between populations and the influence of different hunting regimes must be considered for the correct interpretation of results.
Kimyasal Olarak Modifiye Edilmiş Kitosanın Kuvars Kristal Mikroterazi Kullanarak Antibiyofilm Aktivitesinin Değerlendirilmesi
Authors: NOHUT MAŞLAKCI Neslihan
Published: December 2020

Biyomalzemeler üzerinde büyüme ve hücresel bağlanma ile biyofilm oluşumunu engellemek için, yeni biyomalzemeler geliştirilebilir. Bu şekilde biyomalzemeler yeni özellikler kazanabilir. Bu çalışmada, plazma modifiye kitosan (PCh), 5-etoksi-2-metil-benzofuran-3-karboksilik asit (E1) ile kimyasal olarak modifiye edildi. Kimyasal olarak modifiye edilmiş PCh ve PCh-E1 filmlerinin yapıları, X-ışını fotoelektron spektroskopisi (XPS), Fotolüminesans spektroskopisi (PL) ve Fourier dönüşümü kızılötesi spektroskopisi (FTIR) ile incelendi. PCh ve PCh-E1'in elektrospun nanolifleri, destek polimer polivinil alkol (PVA) varlığında yerinde elektroeğirme ve kuvars kristal mikroterazi (QCM) kullanılarak, QCM elektrot yüzeyinde mikrogram düzeyinde üretildi. Elektrospun nanoliflerin morfolojileri ve çapları Taramalı elektron mikroskobu (SEM) ile incelendi. PVA, PVA/PCh ve PVA/PCh-E1'in ortalama lif çapları ve standart sapmaları sırasıyla 280.0 ± 58.9, 104.5 ± 35.9 ve 99.4 ± 21.9 nm olarak belirlendi. PVA/PCh nanoliflerinden daha ince çapa sahip PVA/PCh-E1 nanolifler elde edildi. Nanolifler ile kaplanmış QCM elektrot yüzeylerinin Pseudomonas aeruginosa (P. aeruginosa) karşı antibiyofilm aktiviteleri, QCM ile bağlantılı bir akış hücresi kullanılarak değerlendirildi. PVA/PCh-E1 nanolifleri ile kaplanmış QCM elektrodunda (ΔF: -13709.5 Hz, Δm: 530.3 μg cm−2), PVA/PCh nanolifler ile kaplanmış QCM elektroduna (ΔF: -14552.7 Hz, Δm: 563.5 μg cm−2) göre daha az negatif frekans kayması ve kütle artışı belirlendi. QCM sonuçları, PVA/PCh-E1 nanoliflerinin, E1 bileşiğinin olası bir katkısı nedeniyle biyofilm oluşumunu önemli ölçüde azalttığını gösterdi.
Electrospun Polyacrylonitrile/Polythiophene Fibers for Phosphate Anion Sensing
Authors: NOHUT MAŞLAKCI Neslihan
Published: December 2020

Electrospun fibers are widely used in various applications such as tissue engineering, wound healing, drug delivery, materials science, chemical industry, energy storage, and sensor thanks to their combination of unique properties such as large surface area, high mechanical stability, high porosity, and great electrical conductivity. In addition, conducting polymers (CPs) used in fiber structures offer an extraordinary range of materials due to their diverse properties such as electrical and optical properties, the possibility of both chemical and electrochemical synthesis, and ease of processing. Among CPs, polythiophene (PTh) is highly important due to its unique redox electrical behavior, ease of synthesis, and application in many fields. In this study, 10 wt% polyacrylonitrile (PAN) fibers (P1), 10 wt% PAN/1 wt% PTh fibers (P2), and 10 wt% PAN/3 wt% PTh fibers (P3) were produced using an electrospinning technique. The structures, the morphologies and the electroactivities of the electrospun fibers were characterized by Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), Thermogravimetric analysis (TGA), and Cyclic voltammetry (CV). FTIR, SEM-EDX and TGA results supported the presence of PTh in PAN fibers. The electrochemical behaviors of indium-tin-oxide (ITO) glasses coated with the P1, P2, and P3 fibers in phosphate buffer solution (PBS) at various concentrations were assessed by CV. These electrospun fibers containing PTh were used for phosphate anion sensing. For all fiber samples, the oxidation potential increased with a decreasing concentration of phosphate buffer solution. The obtained results indicated that the thermal stability and electrical conductivity of the fibers were affected by PTh. This study shows that PAN fibers containing PTh as anionic sensors can be used as new recognition models.
Does Museum Marketing Meet Postmodern Conditions?
Authors: SÖKMEN Seda , YOLAL Medet , ÖZEL Çağıl Hale
Published: December 2020

The purpose of this study is to explore how museum marketing meets postmodern conditions. Based on a sample of 12 museums in Istanbul, Turkey, a qualitative study was conducted to evaluate whether museum marketing meets the five conditions of postmodernism, namely decentered subject, reversal of production and consumption, fragmentation, juxtaposition of opposites and hyperreality. The findings of this study reveal that the marketing practices of museums meet all conditions of postmodernism except that of the decentered subject. They also demonstrate that museum managers hold negative attitudes towards the decentered subject, mainly due to their resistance to intermediaries between the exhibition and the audience.
Downsizing-Organizational Behavior and Survivors Efficiency with the Moderating Role of Shared Leadership
Authors: BANGASH AKBAR ABBAS , NIAZI GHULAM SHABIR KHAN , BAGRAM MUHAMMAD MAJID MAHMOOD
Published: December 2020

This research paper aims to study the elements of organizational behavior in a downsized work setting for the survivor’s efficiency with the moderation role of shared leadership. Five downsized organizations were approached through structured questionnaire as target population with sample size of 288. The theoretical model was developed with seven hypotheses to predict the role of organizational behavior variables for the survivor’s efficiency with the moderation role of shared leadership. Principal component analysis, stepwise regression analysis and moderation analysis was used for the results. Once the constructs of creativity, communication, perception, turnover and stars were independently regressed except turnover all the constructs have shown significance with the survivors’ efficiency. The regression model also testifies the significant relationship between organizational behavior and survivors’ efficiency. The moderation analysis shows positive and significant moderation effect. The study revealed that it is these independent variables which have a significant role in making the organizational behavior worthwhile after being downsized. Organizational reluctance to public downsizing information has been found a biggest limitation of this study. Keywords: Downsizing, Organizational Behavior, Survivors’ Efficiency, Shared Leadership, Moderation Effect.
Halal Food Products and their Market Extent - Opportunities in the World
Authors: KHAN MUHAMMAD TARIQ
Published: December 2020

Halal in Islam is a central concept, referring to any permissible to use e.g. thing, entity, object or action in accordance with Islamic principles & practices, because Islam has a unique consumption & dietary system different from other ethnic consumption & dietary systems so what Muslims can eat is defined in halal food regulations because there are ingredients of food and processes of preparation and both must be halal, therefore all the Muslims are required to ensure that their food comes from halal sources according to principles of Shariah both its ingredients & its whole preparation process. And now world community has recognized the importance of Muslims dietary & other consumption needs. Muslim consumers towards halal food products have more positive intention & attitude than non food products though halal concept is applicable to all products including food, pharmaceuticals, fashion, banking, insurance, entertainment and tourism. However what an overall concept encouraging, Muslims to seek & use goods & services is promoting ‘cleanliness’ in all the aspect of human life hence halal food is produced in a clean environment is of quality & safe to consume. Now the term halal has attracted attention and certified halal food and other products market is increasingly growing both internationally & domestically. Halal rules govern the tastes & preferences of Muslim consumers so where Muslim consumers exist, market for halal food also exists. Therefore Market for halal products is very fast growing market and is to the tune of trillion dollars. This paper encompasses the points i.e. what is halal? What is origin of halal food such as animal food or plants food? What is extent of halal products market in the world? Keywords: Halal, Food, Products, Markets, Consumption.
Exchange Rate Fluctuations in Pakistan, Causes and Remedies
Authors: BEGUM SAFIA , NAEEM MUHAMMAD , AMIN AMJAD
Published: December 2020

Exchange rate plays a crucial part in the development of the country and it highlights the prosperity of the country's economy. This study takes various set of determinants, which affect the instability of rate of exchange in the country. This study investigated the relationship of interest rate, inflation, Forex, trade balance and inflow of net foreign capital with exchange rate. The study analyzed the data for the period 1972 to 2014 for Pakistan. Multi-level statistical estimation techniques, VECM, Johnson co-integration, impulse response, variance decomposition and granger causality are applied. The results demonstrated long relationship of interest rate, trade balance, foreign exchange reserve, net foreign capital inflow and exchange rate. The study also confirmed the positive effect of these variables on exchange rate. The study can be especially significant for the government, to make appropriate action to better deal with exchange rate volatility. Keywords: VECM, Granger Causality, Instability of Exchange Rate, Pakistan.
Effect of Entrepreneurship Education Program to Attitudes Toward Starting a Business, Entrepreneurial Desirability, Competence, and Intention
Authors: AVILLANOZA ROMMEL A. , DOMINGO MARILOU D.
Published: December 2020

This study determines the effect of entrepreneurship education on attitudes toward starting a business, entrepreneurial desirability, competence, and intention. Experimental research using pre-test and post-test design was used. The authors have set-up a mini-store inside the school campus and taught the students the basics of business operations for four months. The students were asked to evaluate themselves before and after the program about their perceptions of attitudes toward starting a business, entrepreneurial desirability, competence, and intention. The findings show that entrepreneurship education program has a significant influence on students’ attitudes toward starting a business and entrepreneurial intention. Keywords: Entrepreneurship Training; Theory of Planned Behavior, Entrepreneurial Intention, Entrepreneurial Skills, Entrepreneurs.
Eigene und übernommene Traumatisierungen
Authors: Andersch-Sattler Heinz-Günter
Published: December 2020

Zunächst stellt der Autor die Wirkmechanismen von Traumatisierungen sowohl auf neurobiologischer wie auf psychischer Ebene dar und dann die Zusammenhänge bei den übernommenen Traumatisierungen: Introjekte naher Bezugspersonen, mehrgenerationale Übernahme von Traumata und Täterintrojekte. Dann gibt er Hinweise für Lösungen, wobei er die tragende Beziehung als zentrales Mittel sieht.
Katastrophe und Kommunikation
Authors: Bergmann Jörg R.
Published: December 2020

Da die Zeitschrift Focus eine Titelgeschichte zu »Glaube, Liebe, Hoffnung« brachte und wir ein paar Wochen zuvor schon zu dieser Trias zu arbeiten begonnen haben, wollen wir hier unsere Überlegungen kurz und knapp vorstellen; diese Trias hat mehr eine sozial-konstitutive als eine religiöse Funktion, die wir hier andeuten wollen.
Operational Rationing of Energy Resources for Train Traction using the Method of Artificial Neural Networks
Authors: Malakhov S. V. , Kapustin M. Yu.
Published: December 2020

The task of resource saving is relevant for all transport companies and many world communities of scientists and engineers are engaged in search for ways to solve it. World railway companies, and especially large ones such as Russian Railways, are large consumers of energy resources and the problem of saving is the most urgent for them. One of directions for solving this task can be the use of an optimal energy regulation system for traction of each train – an operational rationing system. Such a task can only be solved by modelling the process of movement through the dynamic programming method. In modern conditions of development of engineering and technology, it has become possible to develop such operational standardization systems endowed with important properties: high performance, multitasking, solution accuracy, ease of use and maintenance. These requirements impose certain restrictions on the architecture of the operational rationing system. Typical system architecture should be built around a centralized node, which will act as a solver and storage, nodes for input and output of information can be geographically separated. The method of dynamic programming can be improved by using it in the process of training artificial neural networks, which will form not only a priori estimates of energy consumption for traction, but also an a posteriori estimate of train control (by a train driver or auto-driving system). Also, the use of artificial neural networks will allow us to continuously improve the method due to training using the accumulated amount of data from real trips, which will allow us to clarify the norms of energy consumption and to plan our costs in the future. The prototype of the operational standardization system was developed at the department of traction rolling stock of Russian Open Academy of Transport of Russian University of Transport and the results obtained allow us to state that the chosen approach to solving the problem of energy saving has been chosen correctly.
Research of Development of Foreign Railway Companies Using Patent and Bibliometric Analysis
Authors: Zheleznov M. M. , Karasev O. I. , Shitov E. A. , Shitova Yu. A.
Published: December 2020

The modern stage of economic development is intricately linked with accelerated pace of advancement in technology and hence introduces into basic corporate agenda the need to regularly benchmark best competitive practices. Considering highly competitive environment usual tools and metrics do not allow to reveal promising directions of innovative development, whose implementation will help in building new competitive advantages with similar companies. To reveal early signs, revealing emerging directions of innovative development, promising technology and decisions, global practices implement tools and instruments of patent and bibliometric search, allowing to assess current corporate practices in the field of both fundamental and applied research. The article presents the results of a research on activity of leading world railway companies in the field of technological and scientific research, and of priority directions of innovative development, obtained using tools of patent and bibliometric analysis. The research also described the dynamics and the structure of publications and patent applications in the railway sector, the differences in the structure of cooperative links of leading railway companies regarding publication and research activity. The article also studied structuring of patent and publication activity of some companies, showing priority directions of technological and scientific efforts.
Abstracts of Ph .D . theses
Authors: Editorial Article
Published: December 2020

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A Critical Discourse Analysis of Language in Ghanaian Newspaper Editorials
Authors: Bakuuro Justine , Diedong Africanus L.
Published: December 2020

The study explores the linguistic devices, approaches and styles in media discourse that are used to stake claims to knowledge, to influence attitudes and to promote critical thinking, among other functional roles of language. The study was equally interested in knowing the outcomes of the choice of these linguistic devices as far as communication is concerned. Linguistic devices such as modality, evaluative adjectives, adverbs, generic phrases, rhetoric and idioms among others, are used to state opinions, make predictions and influence attitudes. The study hypothesises that the study of language can be used in particular ways, so intended by the user, to achieve specific purposes. Eight different newspapers: The Daily Graphic, The Ghanaian Times, The Mirror, The Crusading Guide, The Insight, The Independent, The Catholic Standard and The Daily Guide, editorial excerpts were culled and used for the study of language use in newspaper editorials. The styles used and the reasons behind the choice of those devices and styles are closely looked at in the analysis. With Systemic Functional Linguistics, complemented with Van-Dijk’s theory of Media Discourse as models of analysis, the study is theoretically anchored. The study concludes that editorial writers use linguistic devices to express different shades of attitude and opinion, to influence, shape or re-shape their readers’ attitudes and to promote critical thinking of readers. Keywords: Linguistic Devices, Media Discourse, Communication, Language, Styles.
Cuba, 1899-1902: una bandera entre dos imperios
Authors: Padrón Iglesias Wilfredo , Hernández Estrada Yakelin
Published: December 2020

El presente ensayo de investigación centra su atención en el período de la ocupación de Cuba por el gobierno de Estados Unidos de América, entre 1899 y 1902. De manera específica, analiza el significado de la bandera, como símbolo nacionalista, para la sociedad cubana de entonces, teniendo en cuenta las complejas circunstancias políticas, económicas, sociales y culturales que se configuran en este lapso, producto de las acciones desarrolladas por el gobierno norteamericano para afianzar su control sobre la isla. Para su desarrollo se examinaron importantes resultados alcanzados por historiadores cubanos y extranjeros, así como informaciones ofrecidas por fuentes periódicas y documentos primarios. Su principal resultado se encuentra en subrayar la elevada importancia adquirida por la bandera para la sociedad cubana del período estudiado, como muestra del fortalecimiento de su identidad nacional.
Calculation of MIS Weights for Bidirectional Path Tracing with Photon Maps
Authors: Ershov Sergey , Voloboy Alexey , Zhdanov Dmitriy , Zhdanov Andrey
Published: December 2020

A widely used method for noise reduction in Monte-Carlo ray tracing is combing different means of sampling, known as multiple importance sampling (MIS). For bi-directional Monte-Carlo ray tracing with photon maps (BDPM), the join paths are obtained by merging camera and light sub-paths, and since several light paths are checked again the same camera path, and vice versa, the join paths obtained are not statistically independent. Thus the noise in this method obeys laws different from those in simple classic Monte-Carlo with independent samples so the weights that minimize that noise must also be calculated differently. This paper drives that weights for the simplest case when we mix contribution from only two vertices of camera ray. It shows that the weights obey an integral equation which is qualitatively different from the well-known MIS formulae for uncorrelated samples. Besides that, even if forget the integral operator, the weights depend on the integration sphere radius and the number of light rays used. The integral equation is solved analytically in a closed form and it is demonstrated how to perform the necessary calculations in BDPM.
Component approach to the translation of geometric models
Authors: Filinskih Aleksandr
Published: December 2020

The article considers the issue of different approaches to assessing the transfer of geometric models of assembly units between different professional software environments of different vendors. A model for calculating the metric of the volume of data loss and the calculation of the relative volume of manual recovery of geometric models after their translation are considered. For evaluation, a hierarchical structure of the parameters of geometric models is used, as well as a graph of parameters, based on which structural weighting coefficients are calculated. Algorithms of the considered approaches are described, their differences are considered. The assembly unit of a machine-building unit was constructed in the Autodesk Inventor Professional software product. Based on the parameters of the obtained geometric model, the corresponding parameter graphs were constructed and calculations were made for each proposed approach to data translation. The model was exported and the resulting files were analyzed. Weights were calculated that reflect expert preferences and structural features and are determined in accordance with the theory of rational choice. The assembly model was translated into the KOMPAS-3D geometric modeling environment. Based on the data obtained in different formats, an analysis was made and parameter distortion coefficients were obtained and the relative amount of parameter data losses was estimated when transferring the geometric model from the professional software environment Autodesk Inventor Professional to the KOMPAS-3D environment. Conclusions are made and recommendations are given on the possibility of applying the component approach to the translation of geometric models in professional software environments.
To R- geometry of plants
Authors: Moiseyev Vyacheslav
Published: December 2020

The article gives a definition of the organic form as an infinite-similar and self-similar structure, which is based on the increased unity of the whole and the part - holomereological symmetry. A model of plant forms as organic forms is proposed, which are based on spherocylinders – infinite-similar cylindrical volumes joined with hemispheres at their ends. The data on the golden wurf in the metric of plant stems are presented. The cirrus leaf model in MathCad is briefly described. The problem of the organic form, the form of living organisms, is a long-discussed topic in biology, in particular, in morphology. There is a lot of empirical material relating to the description of a huge variety of biological forms. However, until now, the laws of the organic form and its specificity, in comparison with the forms of inorganic bodies, continue to raise more questions than answers. It is clear that organic forms are special, they have their own laws and types of morphogenesis. But what is the essence of these features, what is the logic of their organization, all this is still largely unclear.
Analysis of the behavior of OpenFOAM solvers for 3D problem of supersonic flow around a cone at an angle of attack
Authors: Bondarev Aleksandr , Kuvshinnikov Artem
Published: December 2020

This paper is devoted to comparative analysis of numerical methods accuracy. Comparative estimation of accuracy is performed for numerical methods presented as solvers integrated to open sotware package OpenFOAM. Three different OpenFOAM solvers are selected to numerically solve the problem of supersonic flow around a cone. The angle of attack, cone half-angle and Mach number were varied in the selected ranges with a certain step. This approach is implemented using a generalized computational experiment that allows, based on parallel technologies, the simultaneous solution of the same basic problem with different input parameters. A number of test calculations were carried out. The deviation fields of gas-dynamic quantities for all solvers are analyzed. The construction of a generalized computational experiment made it possible to compare the accuracy of the considered solvers not only for one, separately taken problem, but for a class of problems specified by the ranges of variation of the determining parameters. Such an assessment of accuracy can be very useful for users of the software package when choosing a solver. Also, the results obtained can be useful for solver developers.
Nonstrict methods for a posteriori error estimation
Authors: Bondarev Aleksandr , Alekseev Aleksey
Published: December 2020

The paper is devoted to comparison of a posteriori methods (based on the precomputed solutions) for approximation error estimation. Rigorous a posteriori error estimation for computational Fluid Dynamics at present is practically impossible due to nonlinearity and the discontinuities that may occur and migrate along the flow field. In this situation, several nonstrict (weak) forms of a posteriori estimation of the approximation error may be considered. They either do not provide the error norm estimation in the form of inequalities or provide values of the effectivity index to be less than unit. The best quality of estimates are provided by the Richardson extrapolation, unfortunately for the cost of extremely high computational burden. We pay the special attention to the nonstrict methods that either cannot be presented in a form of inequalities, or demonstrate the effectivity index of an estimator to be below unit. Several new, computationally inexpensive methods for both the point-wise error and the error norm estimation are considered. They are nonintrusive, realized by postprocessing and provide a successful compromise of the reliability and computational efforts. Methods based on the use of an ensemble of independent solutions can be implemented by constructing a generalized computational experiment, which sharply increases the speed and efficiency of the assessment.
Modeling of the natural and technogenic risks dynamics
Authors: Minaev Vladimir , Faddeev Alexander , Stepanov Rodion
Published: December 2020

A general view of the model of risk assessment in the natural-technogenic system (NTS), considering the effects of natural and technogenic factors, is considered. The general solution of the system of differential equations describing the model is found. Two examples of the application of the model for the case of functionally similar natural and technogenic impacts are analyzed: (i) linear effects resulting in catastrophic seismic events; (ii) parabolic impacts that lead to creep, karst-deformation, subsidence and landslide processes. In addition, two new models of the dynamics of risks arising in a TCP under the influence of dangerous natural and technogenic factors are described. The presented models differ from each other in the types of effects: in the first model, they consider jointly parabolic (reflecting threats, the intensity of which gradually decreases with distance from the epicenter) and linear types of effects (reflecting suddenly arising threats), in the second model, the analysis of such types of impacts as parabolic and hyperbolic (reflecting threats whose intensity decreases sharply over time) is carried out. It is concluded that, on the basis of the considered models, it is possible to accurately describe almost any type of combined natural and technological impact and also make a special “atlas” of complex effects on the NTS for preventive “playing” of various situations and developing effective counteraction to emerging dangers from the departments of the Ministry of Emergencies and other structures.
The software platform for creating and conducting artificial intelligence competitions with a visualization subsystem
Authors: Zaharova Alena , Silchenko Nikita , Krylov Rostislav , Averchenkov Vladimir
Published: December 2020

The article describes the solution to the problem of teaching programming skills using modern techniques and additional software. It is proposed to use simulation modeling of interaction developed by users as part of the training of intellectual agents in a competitive form that implement various algorithms as the main approach to the solution. Intellectual agents are presented in the form of artificial intelligence developed by platform users, which interacts with other intellectual agents following the rules of the developed scenario for the competition. Scenarios provide a set of capabilities for intelligent agents, an interaction environment, and a set of constraints that participants follow. To support this simulation, it is proposed to use a specialized software platform. The platform allows organizers to develop scenarios with a unique set of rules, and additional platform tools speed up development and allow organizers to implement visual display to users that can be used to show competitive process. A set of built-in platform tools allows organizers to focus directly on the rules of the competition, since the platform provides communication with participants and additional tools for calculating the results of the competition. In additional there is a set of basic competition systems on the platform. However, if necessary, the organizers can present their own competition format and implement it separately. The article describes the developed platform for teaching and holding competitions in artificial intelligence. The article also examines a number of scenarios and intelligent agents.
Variable photorealistic image synthesis for training dataset generation
Authors: Sanzharov Vadim , Frolov Vladimir , Voloboy Alexey
Published: December 2020

Photorealistic rendering systems have recently found new applications in artificial intelligence, specifically in computer vision for the purpose of generation of image and video sequence datasets. The problem associated with this application is producing large number of photorealistic images with high variability of 3d models and their appearance. In this work, we propose an approach based on combining existing procedural texture generation techniques and domain randomization to generate large number of highly variative digital assets during the rendering process. This eliminates the need for a large pre-existing database of digital assets (only a small set of 3d models is required), and generates objects with unique appearance during rendering stage, reducing the needed post-processing of images and storage requirements. Our approach uses procedural texturing and material substitution to rapidly produce large number of variations of digital assets. The proposed solution can be used to produce training datasets for artificial intelligence applications and can be combined with most of state-of-the-art methods of scene generation.
Robust diagnostics of dark counts for quantum networks
Authors: Perminov Nikolay , Smirnov Maxim , Melnik Konstantin , Gilyazov Lenar , Bannik Oleg , Amirhanov Marat , Tarankova Diana , Litvinov Aleksandr
Published: December 2020

In this work, we study timestamps when registering counts of single-photon detectors in quantum communications. Post-pulse counts are analyzed based on several approaches. Explicit statistical accounting of the noise of quantum detectors allows you to most correctly select the mode of use of the detectors to realize the most efficient quantum communication with the highest signal to noise ratio. Direct statistical analysis and robust diagnostics of the noise of quantum detectors can be done by ranging the time's tags of quantum keys that are available for the online diagnostic system and analysis a significant amount of information about the quantum communication performance (the amount of dark noise and post-pulse counts, line interference, etc.). The conclusion is made about the proportion of dark noise and post-pulse counts in the total noise, and the limits of applicability of the theory are shown using a sequence of the ranged amplitudes. We offer non-parametric robust diagnostic of times tags in keys to increase the security of quantum networks, and also discuss the prospects of commercializing quantum-classical cloud-based security services.
Generalized computational experiment in the problems of numerical methods verification
Authors: Alekseev Aleksey , Bondarev Aleksandr , Kuvshinnikov Artem
Published: December 2020

This work is devoted to the application of a generalized computational experiment for a comparative assessment of numerical methods accuracy. The construction of a generalized computational experiment is based on the simultaneous solution using parallel computations in a multitasking mode of a basic problem with different input parameters, obtaining results in the form of multidimensional data volumes and their visual analysis. This approach can be effective in problems of verification of numerical methods. A comparative assessment of the accuracy for solvers of the open software package OpenFOAM is carried out. The classic inviscid problem of oblique shock wave is used as a basic task. Variations of the key parameters of the problem — the Mach number and angle of attack — are considered. An example of constructing error surfaces is given when the solvers of the OpenFOAM software package are compared. The concept of an error index is introduced as an integral characteristic of deviations from the exact solution for each solver in the class of problems under consideration. The surfaces of deviations from the exact solution in the L2 norm, constructed for each solver, together with the calculated error indices, make it possible to obtain a complete picture of the accuracy of the solvers under consideration for the class of problems defined by the ranges of variation of the Mach number and angle of attack.
Geometric support of algorithms for solving Problems of higher mathematics
Authors: Dmitrieva Ilzina , Ivanov Gennadiy , Mineev Alexey
Published: December 2020

The need to improve the level of mathematical in particular geometric training of students of technical universities is due to modern technologies of computer-aided design. They are based on mathematical models of designed products, technological processes, etc., taking into account a large variety of source data. Therefore, from the first years of technical universities, when studying the cycle of mathematical disciplines, it is advisable to interpret a number of issues in terms and concepts of multidimensional geometry. At the same time, the combination of constructive (graphical) algorithms for solving problems in descriptive geometry with analytical algorithms in linear algebra and matanalysis allows us to summarize their advantages: the constructive approach provides the imagery inherent in engineering thinking, and the analytical approach provides the final result. The article shows the effectiveness of combining constructive and analytical algorithms for solving problems involving linear and nonlinear forms of many variables using specific examples.
A simulation study of processes for mixing non-isothermal flows under dynamic effects
Authors: Sataev Aleksandr , Andreev Vyacheslav , Novikov Denis , Perevezentseva Julia
Published: December 2020

The processes for mixing of non-isothermal streams essentially define the parameters of the heat-carrier on an input in a core in modes with incomplete structure of the working equipment and, as a consequence, - a heat engineering condition of a core. Besides, the task of researching the temperature pulsations accompanying practically all modes of currents for non-isothermal streams is extremely relevant, as these pulsations lead to additional thermocyclic loadings on elements of the equipment and in many cases define its resource. The paper describes the research of mixing processes for non-isothermal water coolant flows in hydraulic model of ship nuclear power plant. In several experiments, attention was paid to the mixing processes when feeding non-isothermal flows through the circulation loops located opposite of each other. To simulate the effect of external dynamic force in the form of periodic effect on the spatial orientation of the model, the ship was tested on a stand "Swinging platform". These vibrations affected the mixing processes occurring within the model. The main impact they had on the transition time, temperature gradient, vertical component of the velocity projection. In the future, these parameters will be clarified and the influence of other factors on the mixing of non-isothermal flows in the ship's nuclear power plant will be studied in more detail.
Network-centric concept of tourist and recreational systems management: municipal aspect
Authors: Minaev Vladimir , Tsyshchuk Evgeniy , Tsyshchuk Galina
Published: December 2020

The article discusses the theoretical and applied aspects of a new approach to the management of tourist and recreational systems based on a network-centric model. The model is based on the application of a network structure of information exchanges between tourist enterprises, consumers of tourist services and marketing organizations. In this network structure, clusters or aggregations of objects consisting of homogeneous small and medium-sized tourist enterprises are distinguished. The principle of self-synchronization in the network-centric construction of management in tourist and recreational systems is considered. The concept of "tourist and recreational attractor” is introduced. The strategy of "borrowing" in the application of mechanisms for the diffusion of innovations and advanced tourist and recreational technologies in the tourism industry of Russian regions is justified. A multi-network scheme of innovative development of the tourist and recreational sphere, including the educational segment, is proposed. The tourist and recreational system is considered at the municipal level. A multi-network scheme of innovative development of the tourist and recreational sphere, including the educational segment, is proposed. Approbation of the research results was carried out within the framework of tourist and recreational design of the Moscow and Tver regions municipalities. It is concluded that the network-centric concept, being innovative, has a high applied value and allows solving existing problems in their interrelation, providing competitive indicators (the volume of tourism, employment of supporting personnel, the size of investments). The results obtained in the study can be successfully replicated at the regional level of tourism and recreation management.
Developing HOTS-Based Critical Reading Textbook for Junior High Schools in Ngabang
Authors: Surtikanti Monika Widyastuti , Hertanto Mustika Aji , Agung Antonius Setyawan Sugeng Nur
Published: December 2020

This study is a research and development under the issue of developing English textbook oriented to HOTS-Based Critical thinking for Junior High School Students especially for the seventh grade students in Ngabang, Landak, West Kalimantan. It is based on the evidence that the English teachers find difficulty in finding HOTS-based English textbook as one of the teaching tools. This issue is supported by the result of textbook evaluation. It reveals that most of the existing English textbooks used by the teachers still emphasizing on remembering and understanding level. These preliminary data led the researchers to develop HOTS-Based Critical Reading Textbook for the seventh grade students. The objectives of this study are to describe the materials needed by both teachers and students and to develop “Critical English”, the English textbook with HOTS and critical reading as the basis. In developing “Critical English” textbook, the researchers employed 7 stages of Research and Development study suggested by Borg and Gall (1983) namely need analysis, textbook evaluation, designing product specification, developing the product, expert validation, revision, try-out, and finalization. This study involved 2 English teachers and 20 (twenty) students of the seventh grade at SMP Negeri 2 Ngabang. The data were obtained through questionnaire, interview, classroom observation, expert judgment sheet, documents analysis, and focus group discussion. Then, the gathered data were analysed using a descriptive qualitative method. The research findings reveal that “Critical English” textbook facilitate the teachers to build the students’ critical thinking and the materials provided in the textbook trigger the students to develop their creativity and critical thinking so that the teaching and learning process can be more active and interesting.
Educational Policy: Voices from Local English Teachers and Students towards National Exam in Yogyakarta
Authors: Romios Laser , Primandita Nindya , Saragih Novilda Angela
Published: December 2020

This study is aimed at exploring the voices of English teachers and students of a state senior high school towards the National Exam policy and its implementation in Indonesia. Several theories of psychology and language learning were applied in this study as the theoretical framework. This study used a descriptive qualitative method. The participants were chosen by purposive sampling technique. The data for this study were garnered through a Focus Group Discussion (FGD) conducted to the selected twelfth-grade students and semi-structured interviews done to two English teachers. Both data were analyzed descriptively. Upon the analysis, two paramount themes prevailed: (1) the negative response towards the implementation and accuracy of National Exam (NE) policy in Indonesia; and (2) unintended impacts of NE policy on teaching and learning activity, students’ motivation, and English Language Learning and Curriculum. This study offers information for the government as the policymaker, school leaders, teachers, and researchers to understand how the NE is implemented at the school level.
Analisis Tematik Cerpen As-'Ashifah Karya Kahlil Gibran
Authors: Yani Zulkarnain
Published: December 2020

The periods between 1789 and 1920 is usually called Resurgence Era or Ashr an-Nahdhah. Howevwe, some historical experts of Arabic literature call it ketoasidosis bassed on Ashr al-Hadits (Modern Era). The beginning of Arabic literature in this Resurgence Era is symbolized by the contact between Arab and modern Europe when Napoleon Bonaparte came to Arab in 1789. The first novels and short stories in Arabic literature were also translations of European literature. Thousands of short stories were published in Mesir and Lebanon in 1870-1914. Jibran Kahli Jibran (1883-1931), who comes from Lebanon, is a writer of short stories whose famous collection is al-Arwah al-Mutamarridah. One of his short stories entitled "al-'Ashifah" is analyzed in this article by using thematic analysis.
Why single-authored papers?
Authors: Vuong Quan-Hoang
Published: December 2020

If you are young and have lots of energy, “flying solo” is understandable. But if you are near your 50 and charged with many supervisory responsibilities, this practice does not seem appropriate. So why writing solo?
ABE19: MHC Class I H-2Kb-SIYRYYGL-2C TCR complex: convergence diagnostics of internal energy
Authors: Antipas Georgios S.E. , Ntallis Nikolaos
Published: December 2020

ABE19: MHC Class I H-2Kb-SIYRYYGL-2C TCR complex: convergence diagnostics of internal energy
COVID-19 Encephalopathy in the Context of Psychiatric Comorbidity: Case Report and Diagnostic Pitfalls
Authors: Benrimoh David , Pomerleau Vincent Jetté , Alharbi Majed A. , Pinard Louis , Tourian Leon
Published: December 2020

We present the case of likely COVID-19 associated encephalopathy in a male in his early 50s with a history of non-psychotic depression and personality disorder who presented with delirium, new psychotic symptoms and who developed paratonia and obtundation. After initial questions of neuroleptic malignant syndrome, serotonin syndrome, and stiff person syndrome were decided to not be supported by the clinical picture, conservative management and the repeated treatment of a co-ocurring mastoiditis led to improvement of mental status, regained ability to walk and speak, though a dysexecutive syndrome was left when patient was discharged to rehabilitation services. We explore the role the patient's psychiatric comorbidity had in terms of both his clinical course and the decisions and diagnostic considerations of the various treating teams involved.
The Importance of Environmental Materials in Learning Indonesian in Schools
Authors: Amanda Deby Willy
Published: December 2020

Environmental cleanliness has always been a problem in Indonesia from time to time, the lack of awareness in every human being is one of the causes. Efforts to create a sense of responsibility and awareness of environmental hygiene should be taught from an early age. This environmental cleanliness should also be taught in a school environment that is supervised by the teacher. One of the efforts to implement this environmental cleanliness is by providing material about the environment in the learning process, so that students are expected to be able to apply the results of the learning to their environment.