bluuebunny/crossref_metadata_2025 huggingface dataset:
Option of Control of Access to Information Resources Based on Implicit Authentication
Authors: Marukhlenko A. L. , Plugatarev A. V. , Tanygin M. O. , Marukhlenko L. O. , Shashkov M. Yu.
Published: October 2020

Purpose of research is to build a model of a system for effective authentication of mobile users based on public data of the user and his behavioral factors as well as to study algorithms for calculating the threshold value at which the authentication of a mobile device user is considered successful.Methods. When analyzing the behavioral factors of a user who needs to be authenticated when interacting with mobile devices, application of the following methods for calculating the threshold value are proposed: dynamic methods for determining the threshold value of user authentication based on the standard deviation and the calculation of the aggregate mean score; the method based on the standard when the system divides the aggregate flow of estimates into several blocks of the same length, where the first block is used for training, and the calculated threshold is used in the second block (this sequence of actions is repeated continuously, that is, the previous block provides training results for calculating the threshold for the current block); a method for calculating the aggregate mean score, where instead of using a single total score as input, the system uses the mean value of the current block, and the new calculated threshold is used as the threshold for decision making for the next block. A mathematical model that balances the speed and reliability of mobile users authentication is proposed.Results. The result of the research is the development of an effective system for calculating the threshold value of successful authentication of a mobile device user based on behavioural features which adapts to changes of the user's behavioural factors. Experimental studies and comparisons with analogs confirming the completeness and correctness were carried out as well as various variants of the proposed solutions.Conclusion. The proposed method of implicit authentication for mobile access control is easy to implement, easy to use, and adaptive to changes in input data. Options for calculating the threshold value at which implicit authentication is considered successful are also proposed.
Conceptual Structure of the Insurance Company's Customer Database Management System
Authors: Smirnova A. S. , Khanova A. A.
Published: October 2020

Purpose of research is to develop a conceptual structure for managing the customer database of the insurance company based on the integration of models of data mining and system dynamics. The implementation of the conceptual structure involves clustering the customer database, modelling the dynamics of the customer database and developing strategic goals for each segment of the customer database in order to increase customer lifetime value.

Methods. The article presents a theory-multiple model of the insurance company activity in the context of customer relationship management, which made it possible to determine the logical structure, system relationships as well as a set of functions performed within this process.Results. The proposed conceptual structure of the customer relationship management system includes tools for analyzing key indicators of the customer database, segmenting the database using several clustering methods and structuring by indicators of customer's profitability, satisfaction with insurance services as well as strategizing sales development for each customer segment, which includes the formation of management decisions in the form of marketing activities, optimizing costs and expenses in promoting services on the market due to rational and competent positioning.Conclusion. Based on the task set, an algorithm that allows analyzing the customer database by key indicators, segmenting, structuring customers and forming sales development strategies of the insurance company aimed not only at retaining existing customers but also at increasing the value of each one by increasing customer lifetime value and increasing sales for each cluster as well as increasing the volume of insurance premiums by attracting new customers is proposed.
Digital Watermarks with Adaptive Information Ring Width in the Issue of Hidden Transmission of a Control Signal in the Multi-Target Robotic System
Authors: Shumskaya O. O. , Iskhakova A. О.
Published: October 2020

Purpose of research. The article is devoted to the issue of ensuring the safe transmission of control signals between the elements of a multi-agent robotic system. The purpose of the work is to provide hidden data transmission with the possibility of unambiguous extraction of control signals.Methods. To solve the task set, an algorithm based on the methods of digital watermarks and digital steganography was proposed. The method of forming a digital watermark in the form of a ring with symmetry allows not only ensuring maximum imperceptibility of embedding (insignificant distortion of the container during concealment), but also to protect the transmitted signal from such complex distortions as image rotation. The steganographic concealment method allows regulating the intensity of embedding using the force factor; it is computationally simple and straightforward. The proposed approach to identifying and understanding the transmitted signal differs from modern methods of cryptography and steganalysis in that it does not require 100% correct signal extraction. After several modifications, the method allows minimizing the time spent on formation (adaptive width of the ring with signal bits) and embedding of a digital watermark (minimization of the processed area of the container for embedding).Results. The proposed approach makes it possible to transmit control signals in a hidden way within the framework of the transmission of digital objects; the conducted experiments have shown that the control signal is unambiguously understood even with such distortions as a decrease or increase in contrast or brightness, image rotation, and compression.Conclusion. Application of the proposed technique for transmitting control signals in a multi-agent robotic system will male it possible to receive the necessary information timely and safe, with a minimum probability of loss.
Development of the Authors' Method for Arranging Routes for Elimination of Unauthorized Dumps
Authors: Kirilchuk I. O. , Iordanova A. V. , Yushin V. V. , Popov V. M.
Published: October 2020

Purpose of research is to develop a method for arraging routes for elimination of spontaneously formed unauthorized dumps on the territory of a municipal formation of a constituent entity of the Russian Federation.Methods. The development of a method for arraging routes for elimination of unauthorized dumps is based on the theory of graphs, which includes algorithms for finding the shortest path: Dijkstra's algorithm, Floyd-Warshall algorithm, Ford-Bellman algorithm, Hamiltonian cycle, etc. Having analyzed the peculiarities of using the listed algorithms, the authors have developed a method for arranging a route for the elimination of unauthorized dumps based on the Hamiltonian cycle.Results. The task of arranging a route is reduced to choosing those unauthorized dumps from the detected ones, which will be accepted as the vertices of the graph, between which it is necessary to find the shortest path. The authors' approach to the formation of a set of vertices of the graph is as follows. At the first stage, the initial and boundary conditions are set. The parking of special equipment (garbage trucks) is selected as the zero vertex of the graph, and the SMW polygon is selected as the last (nth) vertex. In this case, it should be taken in the account that after transporting waste from dumps to the place of their burial (landfill), the garbage truck must return back to the parking place. The limits taken into consideration are the maximum distance that the garbage truck can travel without refueling and the volume of the garbage truck body. Then, the closest to the starting point unauthorized dump which represents the greatest danger to the environment is chosen as the first vertex of the graph. An unauthorized dump closest to the first peak is chosen as the second, etc.. The search for vertices continues until the inequalities that take into account the given constraints are satisfied. Next, a graph, an adjacency matrix, and a route are formed. With this approach, for arranging a route, it is optimal to use the Hamiltonian cycle, which ensures finding the minimum path between all the vertices of the graph and returns to the starting point.Conclusion. Application of the authors' method for arranging routes for elimination of unauthorized dumps will make it possible to promptly clean up unauthorized dumps found in the city, which will significantly reduce the environmental load.
Influence of Charge Quality on Physical, Mechanical and Operational Properties of Low-Alloy Steel 30KHGSA
Authors: Sergeev N. N. , Sergeev A. N. , Kutepov S. N. , Tikhonova I. V. , Gvozdev A. E. , Ageev E. V. , Klement'yev D. S.
Published: October 2020

Purpose of reseach is to study the influence of the quality of the original charge on the complex of physical, mechanical and operational properties of structural low-alloy steel 30HGSA.Methods. As an object of research, a typical representative of low-alloy structural steels has been chosen - steel 30HGSA, smelted using metallized sponge iron pellets, ordinary scrap metal and billets obtained by the method of a boiling slag layer. In accordance with the set objectives of the study, steel 30HGSA of various melts, obtained with different charge, had the same conditions for melting, evacuation, deoxidation, casting and crystallization. The casting temperature was 1600...1620 оC and the post-vacuum treatment temperature was 1530...1560 °C. Duration of evacuation - 5 minutes. Casting of melts was carried out into cast iron molds with a siphon for 4 ... 5 minutes. Deoxidation was carried out in a ladle with aluminum in the amount of 4 ... 4.5 kg / melt. After solidification, the ingots were cooled in special wells. The ingots were cut into 3 parts: head, middle and bottom (600 × 600 mm). The middle part was then hot forged and rolled to a Ø30 mm bar. The length of the rod was 2 ... 3.4 m. After hot deformation, the rods were cooled in air.Results. Mechanical tests have been carried out. Statistical processing of experimental results has been performed. Regularities of changes in the characteristics of mechanical properties have been revealed: tensile strength, creep strength, relative narrowing of the cross-sectional area of the sample, relative elongation of the initial working length, impact strength (σВ, σ0.2, ψ, δ, aН).Conclusion. It has been found that with an increase in temperature, the mechanical properties of steel 30HGSA, smelted on various charges, decrease. It has been established that the cold brittleness threshold of 30HGSA steel is lower for purer melts on spongy iron and intermediate product KShS, the value of impact toughness at low temperatures is higher than in melting on a conventional metallized charge. Noticeable softening begins at a tempering temperature of 300 °C The temperature of the maximum tempering brittleness for steel 30HGSA, melted on a conventional metallized charge, is 550 °C It is shown that steel 30HGSA smelted with a pure original charge (spongy iron) has a lower tendency to temper brittleness than steel smelted with a conventional charge. The value of the impact toughness of the steel of this melt is higher than that of the steel of conventional melting over the entire tempering temperature range.
To the Construction of the Amplitude Dependence of Internal Friction with Vibrations of Porous Metal Composites
Authors: Arkhipov I. C. , Abramova V. I. , Gvozdev A. E. , Ageev E. V. , Kutepov S. N. , Kalinin A. A.
Published: October 2020

Purpose of research was to plot the amplitude dependence of the decrement of longitudinal and bending vibrations of samples of porous metal composites manufactured using 3D technology.Methods. The main attention is paid to the role of microplasticity in the scattering of the vibration energy, since the decrement value in composite will be greater than in monolithic material. The effect of porosity on the level of energy dissipation is taken into account. We have used a statistical model based on the results of the theory of functionals given on random processes.Results. This made it possible to find the concentration of microplastic zones in the composite during longitudinal and bending vibrations of the sample. The value of the vibration decrement is defined as the ratio of the potential energy of plastic deformations to the total potential energy of the entire sample. To calculate the effective moduli in the composite, the well-known technique of the theory of elasticity of micro-inhomogeneous media is used. The results obtained indicate that porosity significantly affects the concentration of microplastic zones and the scattering of internal friction during longitudinal and bending vibrations. However, it should be noted that at low amplitudes, microplastic regions are not formed in the vicinity of the pores. Therefore, the reasons for the appearance of energy dissipation are not explained only by microplasticity. The source of such losses are dislocation, ferromagnetic and other reasons. However, the level of these losses is much less than that indicated in this work, and depends only on the oscillation frequency.Conclusion. The results obtained can be used to establish the patterns of behavior of various natures of ingot, powder and composite materials with high dispersion in phase and structural components in various conditions and states.
Method for Accountting the Effect of End Washers on the Flow Around the Wing with Spanwise Profiles
Authors: Galemin E. K. , Ageeva E. V.
Published: October 2020

Purpose of research is to develop a method for accounting for the influence of end washers on the flow of wings with an arbitrary distribution of fillets over the span.Methods. The installation of end washers significantly improves the aerodynamics of the wing, increasing lift and reducing inductive resistance. The theory of a continuous vortex surface is applied to simulate the effect of end washers on the flow of a volumetric wing. In accordance with it, oblique horseshoe-shaped vortices that model the upper and lower sides of the wing are continuously distributed along the longitudinal panels, into which the half-span of the wing is divided. The bearing parts of each horseshoe-shaped vortex lie in planes parallel to the plane of the wing chords and pass through the points and the middle section of the panel at which the induced velocities are calculated. The free vortices of the wing descend from its ends from the upper and lower surfaces at an angle to the plane of the chords.Results. An algorithm has been developed for calculating the intensity of vortices from the non-permeability condition, taking into account the attached and free vortices of the wing and the end-washer vortices. The vortex densities included in this condition are represented by trigonometric series. The developed method takes into account the geometry of the profile and end washers, the shape of the wing in the plan. The vortices induce an additional velocity at the points on the surface of the wing. To calculate their values, the Biot-savard formula on vortex influence is used.Conclusion. A method for calculating the aerodynamic characteristics of a volumetric wing with end washers has been developed from the unified positions of the theory of a continuous vortex surface. The calculations take into account the geometry of the washers and profile, the shape of the wing in the plan. The method is universal and can be used for wings without washers, including for thin ones.
Comprehensive Restoration of an Efficient Technical Condition of the Bearing Brickwork, Having Physical Wear
Authors: Dubrakov S. V. , Dubrakova K. O. , Masalov A. V.
Published: October 2020

Purpose of research. Inspection and assessment of the technical condition of the enclosing structures of a residential building located at st. Engelsa, 107 in Kursk were carried out in connection with the development of the reinforcement project.Methods. Inspection of the technical condition of buildings and structures is necessary to determine the residual resource and service life of the building structures. The current regulatory documents require an examination of the technical condition of buildings and structures no later than two years after their commissioning. In the future, the inspection of the technical condition of buildings and structures is carried out at least once every 10 years and at least once every five years for buildings and structures or their individual elements operating in adverse conditions (aggressive environments, vibrations, high humidity, seismicity of the area 7 points and more, etc.). A permanent monitoring regime is established for unique buildings and structures.Results. In the process of examining a residential building located at st. Engelsa, 107, the following tasks have been solved: determination of damage to enclosing structures; analysis of the results of the study of the degree of wear of building structures; implementation of proposals for strengthening the brickwork. To eliminate the above damages, a proposal was developed to increase the rigidity of the above-foundation part of the building, having previously excluded soaking the foundation soil: by repairing the blind area and heating, water supply and sewerage networks.

Conclusion. The solution of a narrow task of strengthening individual structures of buildings and structures may not give the desired result, therefore, when performing inspection work, it is necessary to consider the existing defects and damage in the complex. Within the framework of this work, we consider the strengthening of the load-bearing walls of a residential building with an increase in the overall rigidity of the above-foundation part of the building and the elimination of individual damages.
Optimization of Building Air Conditioning Processes Applying Free Cooling
Authors: Zherlykina M. N. , Shchukina T. V. , Gurbangulyev A.
Published: October 2020

Purpose of research is to carry out an applied research of the thermal behaviour of the production premise of an industrial building and to develop air conditioning processes, including the search for an expedient circuit design for conditioning and increasing the effectiveness of the system by using the cold outdoor air.Methods. In the work, based on the results of the energy audit, a technique for calculating the flows of harmful emissions in the production premise in the Production mode was developed and the thermal loads of the objects of the study were determined to achieve the set objectives. Possible options for air processing by technological conditioning systems including the minimization of energy costs are analyzed. For the assimilation of excess heat in the warm season and a rational choice of the air treatment process in order to save thermal energy consumption, techniques of air treatment with and without heating are proposed. In the cold season, it is proposed to carry out air conditioning using cold outdoor air. The versatility of the technique makes it possible to determine a process feasible in real conditions, including adjusting the processing scheme, in which air preheating is required.Results. The result of the research work is the development of a number of engineering and technical solutions to ensure the energy efficiency of the engineering system and improve the consumer quality of the research objects.

Conclusion. Implementation of the developed measures for thermal protection of the research object and the use of energy-efficient engineering solutions will allow achieving the following results: to improve the consumer quality of buildings, to bring the parameters of the internal microclimate to the standard value; to extend significantly the service life of enclosing structures, to ensure the quality of the air intended for the technological process with a high degree of accuracy, to ensure energy savings for air conditioning through the use of the cold outdoor air; to maintain a minimum cooling temperature by mixing outdoor and recirculated air without the risk of frost formation on the surface of the heat exchanger and the formation of ice.
Dimensional Analysis of Powders Obtained by Electroerosive Dispersion of High-Chromium Steel in Kerosene
Authors: Ageeva E. V. , Ageev E. V. , Sysoev A. A.
Published: October 2020

Purpose of reseach was to evaluate the dimensional characteristics of powders obtained by electrodispersion of high-chromium corrosion-resistant steel in lighting kerosene.Methods. When setting up experiments for electroerosive dispersion, wastes of high-chromium corrosion-resistant steel X17 were selected. Dispersing equipment - experimental setup (RF Patent No. 2449859). Lighting kerosene was used as a working fluid. In order to stabilize the process, the dispersion modes were selected experimentally and were as follows: voltage 100 V; pulse repetition rate 120 Hz; capacity 48 μF. The granulometric composition of the powders was studied using a laser particle size analyzer "Analysette 22 NanoTec".Results. It has been found that the average particle size is 28.66 pm and 95% of the total volume of particles in the powder have a size less than or equal to 57.36 pm. ,based on the conducted experimental studies aimed at studying the particle size distribution of electroerosive powders obtained from wastes of high-chromium corrosion-resistant steel X17 in lighting kerosene on an experimental setup (RF Patent No. 2449859) at a pulse repetition rate of 120 Hz, a voltage of 100 V and the capacity of the discharge capacitors is 48 μF.Conclusion. The conducted research will allow us to obtain new powder materials from wastes of high-chromium corrosion-resistant steel X17 in lighting kerosene with a guaranteed particle size distribution, through the use of progressive, environmentally friendly, low-tonnage and waste-free technology of electroerosive dispersion.
Application of the Pixel Velocity Clustering Model in the Tasks of Preprocessing images of Earth Remote Sensing
Authors: Khanykov I. G.
Published: October 2020

Purpose of research is to apply the modified Ward method in high-speed processing of full-size images of Earth remote sensing.Methods. The classical Ward method is modified by dividing the computational process into three successive stages. At the first stage, a rough hierarchy of approximations is built. At the second stage, an intermediate improvement of the quality of the given partition is performed for a fixed number of colours. At the third stage, the obtained superpixels are clustered using the classical Ward method. The software-algorithmic toolkit consists of four operations on pixel clusters and image segments: merging a pair of clusters into one, dividing a cluster into two original ones, singling out a subset of pixels into a separate cluster and reclassifying some pixels by excluding them from one cluster and assigning them to another. The quality is assessed by the total squared error. Improving the image decomposition quality is ensured by iterative execution of a combination of merging and deviding pixel clusters, image segments, in particular. One of the clusters (segments) is devided in two and a couple of others non-coincident with it are combined into one according to the criterion of minimum increment of the total squared error.Results. The proposed modified Ward method is applied in the processing of full-size images of Earth remote sensing taken from the database of the USC Signal and Image Processing Institute. The results of processing in the modes of pure segmentation and clustering are compared.Conclusion. The proposed pixel clustering model is suitable for high-speed processing of full-size images. Pixel clustering in comparison with image segmentation makes it possible to define in more detail both the contours of objects of interest and their internal structure.
Parafraza jako środek polemiczny w dyskusji eucharystycznej w „Trajedyi o Mszej” (1560) Bernardina Ochina
Authors: Kordyzon Wojciech
Published: October 2020

Celem artykułu jest omówienie sposobów wykorzystywania biblijnych słów Chrystusa „hoc est corpus meum” w spolszczonym utworze Ochina wydanym w Pińczowie w roku 1560. Po pierwsze, omówiony zostaje kontekst przygotowania i wydania spolszczenia utworu (niedawna śmierć Jana Łaskiego, cele stawiane przez środowisko małopolskich ewangelików). Po drugie, przeanalizowane zostaną metody i warunki wprowadzania parafraz do tekstu utworu, które świadczą tak o potencjale perswazyjno-edukacyjnym omawianego utworu, jak i ogólniejszej perspektywie wczesnonowożytnych zmian semantycznych przejawiających się w dyskusjach o charakterze teologicznym prowadzonych w języku wernakularnym.
Engaging Unmotivated Smokers to Move Toward Quitting: Design of Motivational Interviewing–Based Chatbot Through Iterative Interactions
Authors: Almusharraf Fahad , Rose Jonathan , Selby Peter
Published: October 2020

Background

At any given time, most smokers in a population are ambivalent with no motivation to quit. Motivational interviewing (MI) is an evidence-based technique that aims to elicit change in ambivalent smokers. MI practitioners are scarce and expensive, and smokers are difficult to reach. Smokers are potentially reachable through the web, and if an automated chatbot could emulate an MI conversation, it could form the basis of a low-cost and scalable intervention motivating smokers to quit.

Objective

The primary goal of this study is to design, train, and test an automated MI-based chatbot capable of eliciting reflection in a conversation with cigarette smokers. This study describes the process of collecting training data to improve the chatbot’s ability to generate MI-oriented responses, particularly reflections and summary statements. The secondary goal of this study is to observe the effects on participants through voluntary feedback given after completing a conversation with the chatbot.

Methods

An interdisciplinary collaboration between an MI expert and experts in computer engineering and natural language processing (NLP) co-designed the conversation and algorithms underlying the chatbot. A sample of 121 adult cigarette smokers in 11 successive groups were recruited from a web-based platform for a single-arm prospective iterative design study. The chatbot was designed to stimulate reflections on the pros and cons of smoking using MI’s running head start technique. Participants were also asked to confirm the chatbot’s classification of their free-form responses to measure the classification accuracy of the underlying NLP models. Each group provided responses that were used to train the chatbot for the next group.

Results

A total of 6568 responses from 121 participants in 11 successive groups over 14 weeks were received. From these responses, we were able to isolate 21 unique reasons for and against smoking and the relative frequency of each. The gradual collection of responses as inputs and smoking reasons as labels over the 11 iterations improved the F1 score of the classification within the chatbot from 0.63 in the first group to 0.82 in the final group. The mean time spent by each participant interacting with the chatbot was 21.3 (SD 14.0) min (minimum 6.4 and maximum 89.2). We also found that 34.7% (42/121) of participants enjoyed the interaction with the chatbot, and 8.3% (10/121) of participants noted explicit smoking cessation benefits from the conversation in voluntary feedback that did not solicit this explicitly.

Conclusions

Recruiting ambivalent smokers through the web is a viable method to train a chatbot to increase accuracy in reflection and summary statements, the building blocks of MI. A new set of 21 smoking reasons (both for and against) has been identified. Initial feedback from smokers on the experience shows promise toward using it in an intervention.
OD NEFORMALNOG KA FORMALNOM- ULOGA PORODICE U SISTEMU DUGOTRAJNE NEGE
Authors: Dimitrijevic Bojana
Published: October 2020

Savremeni pojedinac svakodnevno se suočava sa sve većim izazovima usklađivanja profesionalnih i porodičnih obaveza. Produžetak životnog veka, doprinosi i povećanju broja starih kojima je potrebna dugotrajna nega, dok u isto vreme sve kasniji odlazak u penziju, prekovremeni rad ili angažovanje na više poslova istovremeno, znatno smanjuju mogućnost mlađih članova porodice, da na njih adekvatno odgovore, oslanjajući se isključivo na neformalne vidove podrške. Posmatrano iz perspektive institucionalističke teorije, opisano stanje zahteva hitnu intervenciju države, kako bi se razvojem različitih usluga u zajednici namenjenih starim osobama sprečila- odložila potreba za njihovim smeštanjem u neku od rezidencijalnih institucija socijalne zaštite, uz istovremeno smanjivanje stepena rizika da se članovi porodica koji im pružaju dugotrajnu negu, suoče sa sindromom izgaranja.
Analizom sadržaja relevantnih dokumenta, utvrđeno je da usluge u zajednici namenjene starim osobama, nažalost još uvek nisu u skladu sa realnim potrebama pripadnika ove populacije. Tako se na primer, uprkos proklamovanom načelu deinstitucionalizacije, poslednjih godina u Srbiji, otvara sve veći broj domova za smeštaj starih lica, dok usluga pomoći u kući namenjena pripadnicima ove populacije i dalje ne postoji u mnogim opštinama naše zemlje, pri čemu je važno napomenuti, da je ova usluga najčešće dostupna isključivo starim osobama koje žive same.
Ključni cilj ovog rada biće deskriptivna analiza dostupnosti usluga u zajednici namenjenih starima, kao i (ne)mogućnost istovremenog korišćenja resursa i neformalnog i formalnog sistema prilikom pružanja dugotrajne nege pripadnicima ove populacije, kako bi se uz unapređenje kvaliteta njihovog života, prevenirao rizik od pojave sindroma izgaranja kod članova porodice koji im svakodnevno pomažu.
ОПЫТ СОПРЯЖЕНИЯ СИСТЕМЫ НЕПРЕРЫВНОЙ ИНТЕГРАЦИИ JENKINS И ПО CADENCE VMANAGER ДЛЯ ВЕРИФИКАЦИИ СБИС «СИСТЕМА НА КРИСТАЛЛЕ»
Authors: Адрианов А.В.
Published: October 2020

В статье рассмотрены особенности интеграции широко используемой платформы непрерывной интеграции Jenkins совместно с решением Cadence vManager для обеспечения сбора статистической информации о состоянии проекта в ходе регрессионного тестирования.
ТЕХНОЛОГИЧЕСКАЯ ЭВОЛЮЦИЯ ЭЛЕКТРОННЫХ СВЧ-МОДУЛЕЙ
Authors: Далингер А.Г. , Щербаков С.В.
Published: October 2020

Выполнен обзор развития технологий создания электронных СВЧ-модулей, поэтапного наращивания их функциональных возможностей с одновременным уменьшением массогабаритных показателей на основе использования прогрессивных электронных СВЧ-компонентов, материалов и компоновочных решений.
Reconocimiento y espacialización de Unidades Territoriales Residenciales (UTR) en la circunscripción IV – Sección B. Río Gallegos
Authors: Saldivia Merlina , Cáceres Alicia , Ampuero Cristian
Published: October 2020

Este trabajo es producto de una beca de investigación CIN, la cual tuvo como finalidad reconocer y espacializar las Unidades Territoriales Residenciales (UTR) de la Circunscripción IV – Sección B de la Tercera Franja Residencial (TRF) de la ciudad de Río Gallegos, provincia de Santa Cruz, Argentina. Para llevar a cabo esta investigación se recurrió a la observación directa a través de salidas de campo, lectura de bibliografía científica, relevamiento de ordenanzas, cartografía, fotografías aéreas e imágenes satelitales, para luego procesar la información recolectada a través de un Sistema de Información Geográfica (SIG). Se han identificado nueve UTR presentes en el área de estudio, y se dio cuenta de los elementos que constituyen el Paisaje Urbano del área de estudio, a saber, los usos del suelo, proceso de ocupación, entramado y tipo de vivienda/tipología arquitectónica. Este trabajo aporta a la zonificación del uso del suelo que debe realizar en el área de estudio.
Asymptotic solution of Sturm-Liouville problem with periodic boundary conditions for relativistic finite-difference Schrödinger equation
Authors: Amirkhanov Ilkizar V. , Kolosova Irina S. , Vasilyev Sergey A.
Published: October 2020

The quasi-potential approach is very famous in modern relativistic particles physics. This approach is based on the so-called covariant single-time formulation of quantum field theory in which the dynamics of fields and particles is described on a space-like three-dimensional hypersurface in the Minkowski space. Special attention in this approach is paid to methods for constructing various quasi-potentials. The quasipotentials allow to describe the characteristics of relativistic particles interactions in quark models such as amplitudes of hadron elastic scatterings, mass spectra, widths of meson decays and cross sections of deep inelastic scatterings of leptons on hadrons. In this paper SturmLiouville problems with periodic boundary conditions on a segment and a positive half-line for the 2m-order truncated relativistic finite-difference Schrdinger equation (LogunovTavkhelidzeKadyshevsky equation, LTKT-equation) with a small parameter are considered. A method for constructing of asymptotic eigenfunctions and eigenvalues in the form of asymptotic series for singularly perturbed SturmLiouville problems with periodic boundary conditions is proposed. It is assumed that eigenfunctions have regular and boundary-layer components. This method is a generalization of asymptotic methods that were proposed in the works of A. N. Tikhonov, A. B. Vasilyeva, and V. F Butuzov. We present proof of theorems that can be used to evaluate the asymptotic convergence for singularly perturbed problems solutions to solutions of degenerate problems when 0 and the asymptotic convergence of truncation equation solutions in the case m. In addition, the SturmLiouville problem on the positive half-line with a periodic boundary conditions for the quantum harmonic oscillator is considered. Eigenfunctions and eigenvalues

are constructed for this problem as asymptotic solutions for 4-order LTKT-equation.
REFLEXÕES SOBRE A FORMAÇÃO DOCENTE PARA A EDUCAÇÃO BÁSICA NA DISCIPLINA HISTÓRIA MEDIEVAL I
Authors: Vianna Luciano José
Published: October 2020

Neste artigo, nosso objetivo é fazer uma reflexão sobre a formação de professores de História para a Educação Básica através da prática docente na disciplina História Medieval I na Universidade de Pernambuco/campus Petrolina. Para isso, analisamos aspectos temáticos com textos de diversos autores e autoras medievalistas; produções voltadas para a formação de professores, através dos estudos de Cruz e Hobold (2018), Fazenda (2012), Gadotti (1995), Lüdke (2012), Macedo (2013), Pimenta (2005), Santos (2012) e Schmidt (2004); e os aspectos didáticos, por meio dos estudos de Bergmann (1989- 1990), Bittencourt (2004), Guimarães (2016), Libâneo (2006), Lück (1995) e Santos, Silva Júnior e Sousa (2016). Inicialmente, apresentamos a proposta da disciplina História Medieval I, especificando principalmente os conteúdos trabalhados na mesma. Em seguida, abordamos a dinâmica da disciplina, apresentando os conceitos trabalhados, a diversidade temática e o exercício de desconstrução das ideias pré-concebidas sobre o período. Posteriormente, voltamos nossa atenção para o viés interdisciplinar aplicado na disciplina e nos atentamos às propostas da BNCC voltadas para o Ensino Fundamental. Como considerações finais, destacamos a principal característica da disciplina com a abordagem de temas contemporâneos de demanda social para auxiliar na formação de professores e na construção da cidadania dos discentes da Educação Básica.
O “BOOM” DA LUTA DOCENTE EM PORTUGAL FRENTE À INTENSIFICAÇÃO DA PRECARIEDADE DO TRABALHO IMPOSTA PELA “NEW PUBLIC MANAGEMENT”
Authors: De Macedo Jussara Marques , Cabrito Belmiro
Published: October 2020

O artigo é resultado da investigação sobre a luta dos educadores de infância e dos professores dos Ensinos Básico e Secundário em Portugal frente à intensificação da precariedade do trabalho docente, imposta pela “New Public Management”. Objetiva-se analisar as principais pautas de luta instigadas pela reforma do Estado português e, consequentemente, pela reestruturação do sistema de ensino. Nesse contexto, considera-se que a atual gestão dos sistemas educacionais prima pela performatividade, competitividade, resultado, eficiência, avaliação, excelência e mérito. Fundamenta-se no referencial teórico-metodológico do materialismo histórico dialético e toma como referência empírica a Federação Nacional dos Professores (FENPROF). Trata-se de uma pesquisa bibliográfica, de caráter qualitativo com revisão de literatura via análise de fontes primárias e secundárias e, também, análise documental. Como resultado salienta-se que, apesar das políticas educativas derivarem de acordos políticos entre o governo português e os organismos internacionais, mediados pela União Europeia (UE), isso não tem sido suficiente para criar o consenso entre os professores e, nem mesmo, impedir a correlação de forças. Conclui-se, portanto, que a FENPROF tem sido combativa frente ao processo de intensificação da precariedade do trabalho docente e, por isso, tem alcançado resultados positivos, embora limitados, quanto às suas reivindicações em tempo de crise do capital.
A JUVENILIZAÇÃO DA EDUCAÇÃO DE JOVENS E ADULTOS: DESAFIOS E POSSIBILIDADES CURRICULARES
Authors: de Oliveira Maria da Conceição Cédro Vilas Bôas , Costa Graça dos Santos
Published: October 2020

O objetivo do presente texto é apresentar os resultados da pesquisa desenvolvida no Programa de Pós-Graduação em Educação de Jovens e Adultos do Mestrado Profissional – MPEJA – da Universidade do Estado da Bahia (UNEB), que teve por objetivo analisar as representações sociais dos(as) estudantes da EJA de uma escola da rede estadual de ensino do Estado da Bahia, acerca de currículo e juventude, ressaltando os desafios e as possibilidades na construção de um currículo que atenda às culturas juvenis. Metodologicamente, utilizou-se a abordagem qualitativa, por meio de estudo de caso. Os resultados revelam muitos desafios e possibilidades a serem trilhados. Sinalizam a necessidade da escola revisitar suas arquiteturas e práticas curriculares, para maior aproximação das juventudes; conhecer as diferentes culturas juvenis dos estudantes, ou seja, conhecer os sujeitos da ação educativa, garimpando elementos para esculpir as particularidades e reconfigurações curriculares da EJA; fomentar ações formativas colaborativas, pautadas em giro curricular de insurgências e inclusão.
Pengayaan Polifenol Total dari Daun Kadamba Menggunakan Metode Ekstraksi Berbantu Mikrowave Berbasis Pelarut Hijau
Authors: Ahmad Islamudin , Yusniah Andi , Nur Yuspian , Prabowo Wisnu Cahyo , Herman
Published: October 2020

The present study aims to optimize the natural deep eutectic solvent (NADES) as a green solvent-based microwave-assisted extraction (MAE) of total polyphenols content (TPC) from Mitragyna speciosa Korth Havil leaves using response surface methodology (RSM). Preparation of natural deep eutectic solvent (NADES) as a green solvent was performed by melting the two-component of malic acid and glucose using a magnetic stirrer. The leaves sample was extracted using the NADES-MAE method with various extraction conditions with four factors and three levels (Box Behnken Design) and optimized using RSM with licensed software of Design Expert V12. TPC was determined using a Folin-Ciocalteau reagent and absorbance was measured on a UV-VIS spectrophotometer at 770 nm and gallic acid as a standard. This study was obtained the optimum extraction conditions include: NADES ratio (malic acid: glucose) of 1:2 g/g, 50% microwave power, a solvent-sampel ratio of 12:1 mL/g, and extraction time for 7 minutes. The optimum conditions were obtained according to the equation formula: TPC = 165.17 – 33.97X1 + 38.36X2 – 6.08X3 + 16.12X4 – 62.77X1X2 + 79.61X12X2, where a R2 value = 0.7102 with a TPC prediction of 402.087±43.81 mg GAE/g sample. These conditions can be used to extract TPC from this plant efficiently, quickly, easily, and environmentally friendly.
Pemodelan Molekuler Peptida Bioaktif Laut sebagai Antikoagulan Alami terhadap Enzim Sitokrom P450 (CYP) 2C9
Authors: Fakih Taufik Muhammad , Dewi Mentari Luthfika
Published: October 2020

Anticoagulants are very important for the treatment and prevention of thrombotic disorders. The use of conventional anticoagulants like heparin and warfarin can cause bleeding complications. To find safer anticoagulant therapy agents, the development of isolation of new anticoagulant compounds has shifted towards natural sources. Bioactive peptides can be considered a better alternative because of their therapeutic potential in the treatment of various diseases. Several peptide molecules have been shown to inhibit the cytochrome P450 (CYP) 2C9 enzyme as a natural anticoagulant, such as bioactive peptides produced by yellowfin sole (Limanda aspera) and bioactive peptides in blue mussel (Mytilus edulis). This study aims to identify and evaluate the interactions that occur between peptide molecules with the cytochrome P450 (CYP) 2C9 enzyme using protein-peptide docking methods. Bioactive peptide sequencing was modeled using the PEP-FOLD software. The best conformation was chosen for an interaction study against the macromolecule of cytochrome P450 (CYP) 2C9 enzyme using PatchDock software. Further observations were made of interactions formed using BIOVIA Discovery Studio 2020 software. Based on the results of protein-peptide docking, the yellowfin sole peptide molecule has a good affinity against the macromolecule of cytochrome P450 (CYP) 2C9 enzyme, with an ACE score of −2527.01 kJ / mol. Therefore, the bioactive peptide is predicted to be used as a candidate for the cytochrome P450 (CYP) 2C9 enzyme inhibitor.
Concordancia entre las escalas Marshall, Ranson y APACHE II como estimadoras de la morbimortalidad en pancreatitis aguda
Authors: Rodriguez-Varon Alberto , Muñoz-Velandia Oscar Mauricio , Agreda Rudenko Diana , García Consuegra Elías
Published: October 2020

Objetivo: actualmente, en Colombia están en uso diferentes escalas para estimar el riesgo de morbimortalidad en pacientes con pancreatitis, lo que genera incertidumbre a la hora de clasificar y manejar a estos pacientes. El objetivo de este estudio es analizar la concordancia entre las más usadas en una población atendida a 2670 metros sobre el nivel del mar (msnm).

Materiales y métodos: se evaluaron 200 pacientes, entre 18 y 65 años, con diagnóstico de pancreatitis aguda y manejados en el Hospital Universitario San Ignacio de Bogotá (Colombia). Se estimaron tres escalas de riesgo y se clasificaron como pancreatitis con predicción de gravedad si los puntajes de APACHE II eran ≥8, Marshall modificada ≥2, o si tenían 3 o más criterios de Ranson positivos. Se determinó la concordancia entre los resultados usando el estadístico kappa.

Resultados: según Marshall, el 45,5 % de los pacientes correspondieron a pancreatitis con predicción de gravedad, mientras que de acuerdo con APACHE II y Ranson se encontró este diagnóstico en un 39,5 % y un 38,5 %, respectivamente. El coeficiente kappa mostró una concordancia débil entre APACHE II y Ranson (kappa: 0,201; intervalo de confianza [IC], 95 %: 0,05-0,34), así como una concordancia pobre entre Ranson y Marshall (kappa: 0,18; IC, 95 %: 0,04-0,32). La concordancia entre APACHE y Marshall fue moderada (kappa: 0,42; IC, 95 %: 0,28-0,56).

Conclusiones: existe un pobre acuerdo entre las diferentes escalas de clasificación de riesgo de pancreatitis usadas en Colombia, por lo que no pueden interpretarse como clínicamente equivalentes. Los datos de este estudio demuestran la necesidad de validar las distintas escalas en Colombia y en Latinoamérica. Además, sugieren que la escala de Marshall sobreestima el riesgo en ciudades por encima de los 2000 msnm.
A FUZZY APPLICATION OF X-R CONTROL CHARTS OF AN ALUMINUM PRODUCTION PLANT USING FUZZY TRIANGULAR NUMBERS
Authors: ARSLAN Volkan
Published: October 2020

In this study, fuzzy mean and range control charts were used to follow the feeding material and concentrate production line of Eti Aluminum Co. Fuzzy control charts were collected from the factory over a period of time and compared to Shewhart control charts used by the factory. The results showed that fuzzy control charts detected errors in the production process more accurately than Shewhart control charts. This method has increased quality and efficiency. Process capability indices (PCIs) provide numerical measures as to whether a process has confirmed the defined capability prerequisite. These were used to measure the process's ability to decide how well it meets specification limits (SLs). PCIs have been implemented by companies to evaluate quality and efficiency performance. Fuzzy process capability analysis using X-R control charts gave more accurate results.
Endoplasmic reticulum stress influences the localization of prion protein in the small intestine and mesenteric lymph nodes
Authors: Balcan Erdal , Öztel Zübeyde , Polevshchikov Alexander
Published: October 2020

Tunicamycin is an endoplasmic reticulum (ER) stressor that inhibits protein glycosylation and promotes ER stress. To better understand the localization and traffic of prion protein (PrP) in both basal and ER stress conditions, we evaluated the presence and relative expression of PrP in the intestinal compartments of normal and tunicamycin-treated mice. After tunicamycin treatment, the level of PrP was significantly increased in enterocytes and blind-ended villous lymphatic vessels (lacteals), but was decreased in M cells. These results suggested that intake from the gut and transfer into lymphoid compartments of basal PrP occurs largely through the M cell-Peyer?s patch-mesenteric lymph node axis, and also alternatively through the enterocyte-lacteal-mesenteric lymph node axis. In ER stress, the enterocyte-lacteal-mesenteric lymph node is the sole axis for PrP transmission. Results also indicated that germinal centers and high endothelial venules (HEVs) are the most prominent portal for entry of PrP in both basal and ER stressed conditions. We speculated that PrP may use alternative routes for entry into intestinal compartments according to the pathophysiological state and that the mechanism managing the routes of PrP could contribute to the development of new therapeutic strategies against prion diseases as well as ER stress-related intestinal disorders.
Effect of parameters on thermal and fluid-flow behavior of battery thermal management system
Authors: Afzal Asif , Abidi Awatef , Ad Mohammed , Rk Abdul , Soudagar Manzoore , Saleel Ahamed
Published: October 2020

In modern electric vehicles the thermal stability problems associated with Lithium-ion battery system is of major concern. Proper battery thermal management systems is required to ensure safety and efficient performance of battery cells. A realistic conjugate heat transfer and fluid-flow analysis of Lithium-ion prismatic battery cell is performed. The flow of air as coolant, is laminar, flowing between the heat generating battery cells. The effect of few important working parameters like volumetric heat generation, S?q, conduction-convection parameter, ?cc, Reynolds number, aspect ratio, Ar, and spacing between the cells, W?f, is investigated in this work. For the wide range of parameters considered, the temperature variations in battery cell and coolant is carried out. Focusing mainly on effect of Reynolds number and W?f, behavior of local Nusselt number, local friction coefficient, Cf,x, average Nusselt number, average friction coefficient, Cf,avg, maximum temperature, mean fluid temperature, heat removed from the lateral surface of cell are discussed. Average Nusselt number increased with increase in Reynolds number but decreased with increase in W?f, whereas Cf,avg decreased with increase in Reynolds number and W?f. It is also found that their exists an upper and lower limit on Reynolds number and W?f above and below which the change in Cf, avg and average Nusselt number is negligible. Maximum temperature is significantly influenced at low Reynolds number and for all W?f. From the lateral surface of battery over which the coolant flows, more than 96% of heat generated in cell is removed.