bluuebunny/crossref_metadata_2025 huggingface dataset:
Group-IV-semiconductor quantum-dots in thermal SiO2 layer fabricated by hot-ion implantation technique: different wavelength photon emissions
Authors: Mizuno Tomohisa , Kanazawa Rikito , Yamamoto Kazuhiro , Murakawa Kohki , Yoshimizu Kazuma , Tanaka Midori , Aoki Takashi , Sameshima Toshiyuki
Published: January 2021

We experimentally studied three types of group-IV-semiconductor quantum-dots (IV-QDs) of Si-, SiC-, and C-QDs in a thermal SiO2 layer that were fabricated using a very simple hot-ion implantation technique for Si+, double Si+/C+, and C+ into the SiO2 layer, respectively, to realize a different wavelength photoluminescence (PL) emission from near-IR to near-UV ranges. TEM analyses newly confirmed both Si- and C-QDs with a diameter of approximately 2–4 nm in addition to SiC-QDs in SiO2. We successfully demonstrated very strong PL emission from three IV-QDs, and the peak photon energies (E
PH) (peak PL-wavelength) of Si-, and SiC-, and C-QDs were approximately 1.56 eV (800 nm), 2.5 eV (500 nm), and 3.3 eV (380 nm), respectively. IV-QDs showed that the PL properties strongly depend on the hot-ion doses of Si and C atoms and the post N2 annealing processes. Consequently, it is easy to design peak PL wavelengths by controlling the ion doses of Si+ and C+ implanted into the SiO2 layer.
Impact of carbon in the buffer on power switching GaN-on-Si and RF GaN-on-SiC HEMTs
Authors: Uren Michael J. , Kuball Martin
Published: January 2021

This article addresses the impact of the buffer doping on the critical performance issues of current-collapse and dynamic R
ON in GaN high electron mobility transistors. It focusses on the effect of carbon, either incorporated deliberately in GaN-on-Si power switches, or as a background impurity in iron doped RF GaN-on-SiC devices. The commonality is that carbon results in the epitaxial buffer becoming p-type and hence electrically isolated from the two-dimensional electron gas by a P–N junction. Simulations which incorporate a model for leakage along dislocations are used to show that a remarkably wide range of experimental observations can be explained including dynamic R
ON and the complex time dependence of drain current transients in power switches. In RF GaN-on-SiC devices, the current-collapse, the drain current dynamics, kink effect, pulse-IV and electric field distribution in the gate-drain gap can all be explained.
Alguns aspectos do coronelismo brasileiro na perspectiva weberiana
Authors: Vilarinho Murilo
Published: January 2021

O coronelismo brasileiro foi uma forma específica de condução política, desenvolvida durante a República Velha. Sua origem remonta ao Primeiro Reinado.  O poder emanado dos coronéis abrangia as dimensões local, regional e nacional – espaços em que eram observadas as dominações política, econômica e social do coronel sobre a sociedade. Partindo do exposto, este ensaio objetiva discutir alguns aspectos referentes ao coronelismo, principalmente, no que diz respeito aos conceitos de poder e dominação em Max Weber
Editorial
Authors: Dos Reis Aparecido Francisco
Published: January 2021

Editorial

 

Novamente, com grande satisfação, colocamos à disposição o número 23, volume I de Composição, revista de ciências sociais. Este número corresponde ao segundo semestre de 2020 e conta com importantes contribuições de nossos colaboradores de diversas partes do Brasil. Na edição atual temos autores de Mato Grosso do Sul sobre o tema do desenvolvimento local, de Goiás, Rio Grande do Norte, Rio de Janeiro e outros. Na certeza de estarmos avançando em nossos debates, sugiro a todos uma boa leitura  e aproveito para convidá-los a apresentar artigos e resenhas pelo site da revista. Lembrando que recebemos artigos e resenhas em fluxo contínuo. 

Aparecido Francisco dos Reis - Editor
UMA BREVE RETROSPECTIVA DO DESENVOLVIMENTO DA POLÍTICA DE REFUGIADOS NO BRASIL SOB AS ÓTICAS DA EUGENIA, DA SEGURANÇA NACIONAL E DO UTILITARISMO ECONÔMICO (1889-1997)
Authors: Alves Thaynara Lima
Published: January 2021

O presente artigo consiste na realização de uma retrospectiva histórica, a partir de marcos legais, do desenvolvimento da política de imigração e, especificamente, da política de refugiados no Brasil durante o período de 1889 até 1997. A análise será orientada através dos parâmetros da eugenia, da segurança nacional e do utilitarismo econômico, considerando as dialéticas entre o Estado brasileiro, a comunidade internacional e a sociedade civil organizada.
PEMBENTUKAN LOYALITAS PELANGGAN MELALUI CITRA MEREK DAN KUALITAS PRODUK
Authors: Tun Ganyang Machmed
Published: January 2021

This study aims to examine the relationship between brand image and product quality on customer loyalty in sports products. Data were collected through a questionnaire of 68 respondents. Through regression analysis, the results show that brand image and quality can explain variations in consumer loyalty with the brand image as a dominant factor. This finding implies that producers can increase consumer loyalty by enhancing brand image. Companies need to think about how to develop key messages so that consumers can clearly understand the position of the product. The unique aspects of the product need to be improved to create a special impression on the customer.
SmartCrawler: An In-pipe Robotic System with Novel Low-frequency Wireless Communication Setup in Water Distribution Systems
Authors: Kazeminasab Saber , Banks M.Katherine
Published: January 2021

Water Distribution Systems (WDS) are critical infrastructures that deliver potable water to residential areas. Water quality monitoring is one of the requirements for utility managers to ensure the health of the water. However, it is challenging to access all parts of the WDS since they are long and comprise different configurations. In this paper, we propose a size-adaptable in-pipe robot so-called “SmartCrawler”. We develop two-phase control algorithm that enables reliable motion in different configurations of pipelines. The controller in phase 1 stabilizes the robot in the straight paths and tracks the desired velocity with high-level linear quadratic regulator (LQR) and low-level proportional-integral-derivative (PID) based controllers. The controller in phase 2 enables the robot to have reliable change of direction in the non-straight paths. The performance of the two-phase controller is evaluated with experimental and simulation results. Wireless underground communication is a challenging task for underground applications. To facilitate wireless communication, we propose an active radio frequency identification (RFID) based communication working in 434MHz carrier frequency and evaluate its performance with experimental results. At the end of this work, we design the printed circuit board (PCB) for the SmartCrawler. The simulation and the experimental results prove the proposed robotic system can be used for in-pipe missions where wireless communication is needed to communicate with the robot during operation.
Pendampingan Kepesertaan BPJS Bagi Masyarakat Kecamatan Jebres Kota Surakarta
Authors: Iskandar Dibyo , Khristiana Yenni , Sapariyah Rina Ani
Published: January 2021

Kepesertaan BPJS sudah menyentuh angka 98,17 % dari jumlah penduduk ,tetapi pihak pejabat BPJS masih berupaya untuk menjadikan kepesertaan JKN - KIS bisa mencapai 100%.Tim Pengabdian kepada masyarakat STIE AUB merasa terpanggil dengan melalui kegiatan sosialisasi penyuluhan dan pendampingan dalam kepesertaan assuransi  masyarakat.di wilayah Kec Jebres Surakarta yang dihadiri 23 peserta terdiri pemuka masuarakat kader penggerak kesehatan pengurus Pokja dan pengurus RT,kegiatan ini dilakukan supaya masyarakat sadar tentang pentingnya assuransi kesehatan sehingga tertarik sebagai peserta assuransi dan paham akan kewajiban maupun hak – haknya serta tahu prosedur pemanfaatan fasilitas kesehatan dalam rujukan maupun sangsi denda apabila peserta tidak disiplin dalam melakukan pembayaran preminya. Di akhir kegiatan tersebut masyarakat banyak yang meminta konsultasi dan pendampingan apabila mendapati permasalahan terkait kepesertaan assuransi kususnya melalui BPJS.Tujuan akhir dari kegiatan Pengabdian adalah menjadikan masyarakat secara mandri mampu mengatasi permasalahan yang dihadapi terkait kepesertaan assuransi melalui BPJS.
Generative transformer framework for network traffic generation and classification
Authors:   LLC ", Bikmukhamedo Radion F. ,   Factory5",   Kazan National Research Technical University named after A. N. Tupolev – KAI (KNRTU-KAI), Nadeev Adel F. ,   Kazan National Research Technical University named after A. N. Tupolev – KAI (KNRTU-KAI)
Published: January 2021

for generating and classification tasks. Only packet size and inter-packet time sequences are used as flow features to unify the inputs for the two tasks. The source feature space is scaled and clustered with K-Means to form discrete sequences as model inputs. The model can be trained in two modes: (i) autoregressively, for network traffic generating, where the first token of training sequence represents a flow class, (ii) as a network flow classifier. The evaluation of generated traffic by means of Kolmogorov-Smirnov statistic demonstrated that its quality is on par with the first-order Markov chain, which was trained on each traffic class independently. The metric measured distances between source and generated empirical cumulative distributions of such parameters as packet size, inter-arrival time, throughput and number of packets per flow in directions to and from traffic origin. It was shown that enriching the dataset with external traffic from different domain improves quality of the generated traffic on target classes. The experiment results showed positive influence of generative pre-training on quality of the traffic classification task. In case of using the pre-trained model as a feature extractor for a linear algorithm, the quality was close to Random Forest trained on the raw sequences. When all model parameters are trained, the classifier outperforms the ensemble on average by 4% according to the F1-macro metric.
ON ESTIMATES OF THE AVERAGE QUEUE LENGTH FOR MASS SERVICE SYSTEMS IN CASE OF CORRELATED INPUT FLOW
Authors:   Volga State University of Telecommunications and Informatics, Lichtzinder Boris Ya. , Blatov Igor A. ,   Volga State University of Telecommunications and Informatics, Kitaeva Elena V. ,   Samara National Research University named after Academician S.P. Korolev
Published: January 2021

In multiservice packet-switched networks, the packet flow differs significantly from the Poisson flow, since these flows are generated by many sources of requests for services that are significantly different from each other. All this leads to the fact that the flows in multiservice networks are characterized by uneven arrival of requests and packets. Packages are grouped into "bundles" at some time intervals and are practically absent at other intervals. The random process of claims (packets) entering the system is characterized by a distribution law that establishes a relationship between the values ??of a random variable and the probabilities of occurrence of the indicated values. In most cases, such a flow is characterized by a distribution function of time intervals between neighboring claims, and the process of their processing is characterized by a probability distribution function of service time intervals. The mathematical model of the simplest single-channel queuing systems (QS) in case of incoming flow with arbitrary correlation. For this QS, various generalizations of the Khinchin-Pollachek formula of the average queue length. An interval model of the incoming flow is proposed, within which an expression of the average queue length through unconditional moments is obtained second order. All results were obtained with very general assumptions of ergodicity and stationarity. Are given results of numerical experiments confirming theoretical conclusions.
Integration of legacy applications into "Eni" scientific research ecosystem
Authors:   Moscow Technical University of Communication and Informatics, Trunov Artem S. , Voronov Vyacheslav I. ,   Moscow Technical University of Communication and Informatics, Voronova Lilia I. ,   Moscow Technical University of Communication and Informatics
Published: January 2021

The article describes the development of a digital platform for the Eni research ecosystem, based on a microservice approach that automatically scales the computing resources of the system when working with big data. A brief description of the structure of the digital platform, its main components and the functionality of the basic subsystems is provided. Two types of digital platform consumers are presented - legacy and platform applications. Their capabilities and limitations are shown. The subsystem of distributed computing is described, which provides continuous management and monitoring of the microservice architecture of the platform, in particular, it is responsible for: load balancing, service discovery, system recovery after failures, end-to-end authentication, "canary rollouts", access control. The high-performance computing subsystem is presented. It includes models and methods for organizing parallel calculations on various hardware devices, such as a multiprocessor system, a cluster of computing devices connected by a local network, and a graphics processor. As software solutions for organizing parallel computing, multithreaded data processing technologies, MPI messaging interface, and CUDA technology are used. Also described is a data mining subsystem designed to deploy different types of neural networks with different architectures, including direct distribution, convolutional, recurrent and generative neural networks. The integration of the legacy application MD-SLAG-MELT v13.0 into the ecosystem of scientific research using platform integration adapters is presented. The architectures and the main components of the original software package and the integrated software package MD-SLAG-MELT v14.0 are presented. The results of load testing with the analysis of performance metrics and response time of an inherited application, when processing big data, are presented.
ON THE USE OF BISTATIC UNDERWATER OPTICAL COMMUNICATION SYSTEMS
Authors:   Siberian state University of telecommunications and Informatics, Abramova Evgenia S. , Myshkin Vyacheslav F. ,   Tomsk Polytechnic University, Khan Valery A. ,   V.E. Zuev Institute of Atmospheric Optics SB RAS,   Tomsk Polytechnic University, Balandin Sergey F. ,   V.E. Zuev Institute of Atmospheric Optics SB RAS, Eremeev Roman S. ,   Tomsk Polytechnic University, Pavlova Maria S. ,   Siberian state University of telecommunications and Informatics, Horohorin Dmitry M. ,   Tomsk Polytechnic University
Published: January 2021

Atmospheric and underwater optical communication lines have much in common due to variable conditions for the transmission of laser radiation along the path of the communication line, both in time and in space. The passage of a laser beam through a cloudy medium is accompanied by a decrease in the radiation intensity and an increase in the intensity of the scattered flux, which forms illumination, the intensity of which decreases with distance from the laser beam. As a rule, at the scales of distances at which the radiation of the optical range decays by several orders of magnitude, water in natural systems is homogeneous. The analysis shows that water in natural reservoirs is a light-attenuating medium both due to attenuation on dispersed particles and due to scattering on nanobubbles. The article analyzes the capabilities of atmospheric and underwater optical communication systems (POS). The results of modeling bistatic PIC in a reservoir containing particles with a diameter of 0.8 ?m and a concentration of 2 х 107 cm-3 are presented. It was shown that the parameters of the bistatic PIC pulses are significantly affected by nanobubbles in water. In natural reservoirs, the use of systems with direct line of sight is preferable. It has been shown that bistatic PICs, in which the scattering region is located on the side of the receiver unit relative to the transmitter - receiver line, have the greatest energy potential and minimal intersymbol interference. In natural reservoirs, it is possible to use such bistatic PICs for communication with a frequency of less than 20 MHz at distances of not more than 20 m. As a scattering region in bistatic PIC, you can use the bottom of the reservoir, the surface of the water or the region of water with a higher turbidity than the rest of the reservoir.
COORDINATION OF BUS ROUTE SCHEDULES IN REGIONAL PASSENGER TRANSPORT
Authors:   The Siberian State Automobile and Highway University, Akifieva Irina A. , Voytenkov Sergey S. ,   The Siberian State Automobile and Highway University
Published: January 2021

In modern conditions of the Russian Federation in the field of traffic management, one of the priorities is to develop and improve the quality of functioning of route transport. One of the main requirements of passengers is the minimum time spent on the trip. It is problematic to meet this requirement without mutual coordination of transport processes along routes and the use of stopping points by vehicles and passengers due to their interdependence. The problem of such coordination is not only in cities, but also in regional settlements. The subject of this study is the coordination of passenger transport processes on regional bus routes that have common sections and stop-and-transfer points. The purpose of the study is to improve the organization of passenger transportation in regional directions by coordinating routes in time. In this study, we developed a method for coordinating bus schedules for regional routes that share common sections of the route or stop-and-transfer points. According to the results of applying the method for the Sargatsky district of the Omsk region, the results were obtained, according to which the average waiting time for a passenger in the case of a transfer was reduced by 60 %. Application of the developed method allows to organize rational distribution of arrival and departure of buses during the day according to the criterion of the minimum waiting time for passengers at the stop and transfer point and allows to solve the problem of inconsistency of bus traffic. Experimental testing has shown that the use of this technique reduces the waiting time for passengers at transfer points by up to 60%, which also reduces the time of network travel. The developed method can be used in the organization of intercity, intermunicipal and rural passenger transport.
A Review of ARM Processor Architecture History, Progress and Applications
Authors: Asghar Muhammad Nabeel
Published: January 2021

Globally, over 50 billion ARM architecture based embedded chips of 32-bit and 64-bit instruction set architecture are commonly used and produced in quantity perspective since 2014. In our daily life most of the people uses and depends upon a penalty of electrical and automotive devices which have now become an essential part of their daily life. Due to that reason embedded processors are used to build such devices which takes less silicone-space, provides efficient processing and less power.
ASPECTS OF GOLD MINING IN INTERACTING REGIONS (on the example of participants in the “Yenisei Siberia TRC”)
Authors:   Junior Researcher, Tuvan Institute of Complex Development of Natural Resources, Siberian Branch of the Russian Academy of Sciences, Kyzyl, Russia, MONGUSH S. P.
Published: January 2021

The article presents the results of the study of the gold market, taking into account the analysis of development trends, developed proposals for determining the optimal aspects of the work of gold mining companies in the Russian reality. methods of collecting and processing information, statistical analysis were used. The factors and reasons hindering the development of gold mining are described. The directions of achieving the strategic goals of the industry are reflected. it is concluded that the state needs to strengthen the legal framework and simplify the mechanism for obtaining licensing, but the main negative aspect is the lack of financial resources.
DEVELOPMENT OF INDUSTRIES IN RUSSIA NORTH CAUCASUS FEDERAL DISTRICT AS A FACTOR IN IMPROVING THE REGION'S COMPETITIVENESS
Authors:   Student, Faculty of Public Administration, Lomonosov Moscow State University, Moscow, Russia, BURIEV M. M. , SHALOPANOV K. V. ,   Student, Faculty of Economics and Law, Plekhanov Russian University of Economics, Moscow, Russia
Published: January 2021

The paper considers the actual problem of increasing the competitiveness of economic entities in the North Caucasus federal district. despite the depressive nature of development, the region under consideration has a great potential for growth. the authors diagnosed the problems that hinder the sustainable development of industries in the district, and proposed measures to overcome negative trends.
Assessment of nitric oxide level when using protein hydrolysate
Authors:   Candidate of Veterinary Sciences, Associate Professor, Moscow State Academy of Veterinary Medicine and Biotechnology – K. I. Skryabin, Moscow, Russian Federation, Abramov P. N. , Tkachev N. A. ,   Candidate of Biological Sciences, Researcher, N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences, Moscow, Russian Federation, Serezhenkov V. A. ,   Candidate of Biological Sciences, Senior Researcher, N. N. Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences, Moscow, Russian Federation
Published: January 2021

The search for balanced and economically justified protein supplements of domestic production is one of the urgent tasks of feed production. The article presents the results of measuring the level of nitrite in the blood serum, which is a direct metabolite of nitric oxide. This approach allows us to more correctly assess the intensity of biochemical reactions in the body, both in normal and in pathological conditions. The stimulating effect of hydrolysate from mink carcasses on rat metabolism was studied on model systems using electron paramagnetic resonance spectroscopy. Data were obtained on a significant increase in nitrite in rat blood serum, which indicated an intensive synthesis of nitric oxide initiated by biotransformation of amino acids hydrolysate and in particular arginine.
Cost-effectiveness of measures against rabies
Authors:   Candidate of Biological Sciences, Head of the Veterinary Laboratory (at the Institution), Territorial Veterinary Department № 2, Sergiev Posad Veterinary Station, Sergiev Posad, Russian Federation, Abramov K. M. , Liseykina O. V. ,   Senior Lecturer, Department of Economics, Management and Marketing, Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin, Moscow, Russian Federation, Abramova I. K. ,   Student of the Veterinary Biology Faculty, Moscow State Academy of Veterinary Medicine and Biotechnology – MVA by K. I. Skryabin, Moscow, Russian Federation
Published: January 2021

The article presents material on current problems of rabies vaccination: the epizootic situation of rabies in the Russian Federation is considered, the analysis of the dynamics of the number of cases of animal rabies, the population's appeal for anti-rabies care is given. Based on data on preventive rabies vaccination in the Moscow region and the cost of such measures, the economic effectiveness of anti-rabies measures is evaluated.
Episootological features of demodekosis in dogs in the conditions of the city of Shcholkovo, Moscow region
Authors:   Candidate of Biological Sciences, Veterinarian, Associate Professor of the Department of Veterinary Medicine, Faculty of Animal Science and Biology, Moscow Agricultural Academy named after K. A. Timiryazev, Moscow, Russian Federation, Obukhova M. E. , Deryabkina E. G. ,   Veterinarian, Editor of the Publishing House “Advertising Industry” (from the Royal Canin company), Moscow, Russian Federation, Latynina E. S. ,   Lecturer of the Department of Veterinary Medicine, Moscow Agricultural Academy named after K. A. Timiryazev, Moscow, Russian Federation, Nikanorova A. M. ,   Candidate of Biological Sciences, Associate Professor of the Veterinary and Animal Physiology Department of the Kaluga Branch of the Moscow Agricultural Academy named after K. A. Timiryazev, Kaluga, Russian Federation
Published: January 2021

The article analyzes the epizootological situation of dogs demodicosis in the city of Shchelkovo, Moscow region. It was found that among all studied animals with lesions of the skin and hair, dogs with a confirmed diagnosis of demodicosis occupy a significant proportion. Animals with the absence of any clinical symptoms of demodicosis and without pronounced signs of violation of the integrity of the skin and hair, however, can be carriers of its pathogen.
Factores que influyen en el pago por servicios hidro-ecosistémicos de microcuenca del río Chumbao
Authors:   UNIVERSIDAD NACIONAL JOSÉ MARÍA ARGUEDAS, Perú, Arévalo Quijano José Carlos , Barrial Lujan Abel Isaías ,   UNIVERSIDAD NACIONAL JOSÉ MARÍA ARGUEDAS, Perú, Huamán Carrión Mary Luz ,   UNIVERSIDAD NACIONAL JOSÉ MARÍA ARGUEDAS, Perú, Delgado Laime María Del Carmen ,   UNIVERSIDAD NACIONAL JOSÉ MARÍA ARGUEDAS, Perú, Antay Ccaccya Ridher ,   UNIVERSIDAD NACIONAL JOSÉ MARÍA ARGUEDAS, Perú
Published: January 2021

El objetivo de este trabajo fue evaluar los factores que influyen la disponibilidad de pago económico de los usuarios de riego por servicios hidro-ecositemicos de provisión para mejorar acciones de conservación de microcuenca del rio Chumbao. Para dicho análisis se utilizó el Método de Valoración Contingente a través del análisis de regresión logística. El procedimiento inicia con la aplicación de 310 encuestas a los usuarios de riego en las comunidades del valle Chumbao- región Apurímac. Los resultados fueron analizados con el criterio de prueba estadística P<0,05 encontrándose 4 de 5 factores que afectan el pago por servicios hidro-ecosistémicos; y a su vez con el modelo predictivo al 98,11% se determinó los usuarios de riego están dispuestos a pagar una tarifa de s/ 2,00 mensual. Finalmente, los factores: monto hipotético, nivel de educación, índice de calidad y cantidad de agua, y número de integrantes por familia influyen significativamente en la disponibilidad de pago. Palabras clave: disponibilidad a pagar; microcuenca Chumbao; ecosistemas hídricos; usuario de riego.
La realidad virtual en la experiencia educativa de pregrado
Authors:   UNIVERSIDAD CÉSAR VALLEJO, Perú, Elias Ramos Cynthia Melissa , Vargas Acarpana Sergio Ivan , Castillo Ly Karla Vanessa Beatriz ,   UNIVERSIDAD CIENTÍFICA DEL SUR, Perú
Published: January 2021

Frecuentemente los alumnos de pregrado tienen dificultades para lograr propuestas y resolver problemas en forma creativas, lo cual tiene como consecuencia el bajo rendimiento en algunas asignaturas universitarias. El objetivo de este artículo es analizar cómo la realidad virtual (RV) mejora la experiencia educativa de pregrado, a través del análisis de artículos referentes al tema de los últimos tres años. Se tiene como conclusión general que la realidad virtual mejora la creatividad a través de la motivación y el estado de flujo, desarrollando habilidades para el aprendizaje en los estudiantes de pregrado, fomentando su uso y la adaptación de los programas existentes a las clases para que los alumnos generen más soluciones creativas ante los retos y problemas existentes. Palabras clave: realidad virtual; educación; creatividad; motivación; estado de flujo.
Deslinde conceptual entre educación en línea o educación a distancia
Authors:   DIRECTOR GENERAL DEL INSTITUTO DE EVALUACIÓN Y DESARROLLO EDUCATIVO, PRESIDENTE CLUB UNESCO COMPSE, México, Rentería Castro Enrique
Published: January 2021

La COVID-19 logró en unos días lo que las reformas educativas desde hace 25 años no pudieron lograr: promover el uso de las herramientas digitales, en los diferentes niveles educativos, en los procesos de enseñanza y aprendizaje; así mismo transformar la organización y estructura de la escuela. Sin embargo, esta acción emergente está generando improvisaciones y descontextualización del enfoque y conceptos de la Pedagogía Virtual. Afirmar que las aplicaciones Zoom, Facebook y WhatsApp son plataformas educativas que permiten lograr exitosamente los procesos de enseñanza aprendizaje y que la educación por internet es una modalidad denominada Educación a Distancia son proposiciones erróneas que deben ser definidas y contextualizadas para no desvirtuar el enfoque científico que han logrado avanzar la Educación, la Pedagogía y la Didáctica. El propósito de este artículo pretende definir los siguientes conceptos: Educación a Distancia; Educación en Línea usando las diferentes herramientas digitales que la tecnología ha logrado desarrollar y que obligan a una definición de la Pedagogía Virtual. Palabras clave: Educación a distancia; educación en línea; pedagogía; didáctica; currículum; plataforma educativa.
Distribution of trace elements in organs and tissues of three species of flounder from the Peter the Great Gulf (the Sea of Japan)
Authors: ЧУСОВИТИНА С.В. , СТЕБЛЕВСКАЯ Н.И. , ПОЛЯКОВА Н.В. , ЖАДЬКО Е.А.
Published: January 2021

Изучены особенности распределения микроэлементов в тканях и органах Gliptocephalus stelleri (Shmidt, 1904), Hippoglossoides dubius (Shmidt, 1904), Cleisthenes herzensteini (Shmidt, 1904) зал. Петра Великого Японского моря. Исследованы фрагменты мускулатуры, жабр, печени, кожи, позвонков, гонад и почек. Установлено преимущественное накопление микроэлементов в следующих органах и тканях камбал: железа – в печени и жабрах; меди, селена, мышьяка – в печени; марганца, стронция, мышьяка – в костной ткани; цинка – в гонадах; никеля – в мышцах и коже.

The distribution peculiarities of trace elements in tissues and organs of Glyptocephalus stelleri (Schmidt, 1904), Hippoglossoides dubius (Schmidt, 1904), Cleisthenes herzensteini (Schmidt, 1904) of the Peter the Great Bay of the Sea of Japan were studied. Fragments of musculature, gills, liver, skin, vertebrae, gonads, and kidneys were researched. The predominant accumulation of trace elements in the following organs and tissues of flounders was found: iron – in the liver and gills; copper, selenium, arsenic – in the liver; manganese, strontium, arsenic – in the bone tissue; zinc – in the gonads; nickel – in the muscles and skin.
Аналіз напруженого стану порожнистих деталей в процесі зворотно-радіального видавлювання
Authors: Abhari P. B. , Malii K. V. , Kuzenko O. A.
Published: January 2021

Абхарі П. Б., Малій Х. В., Кузенко О. А. Аналіз напруженого стану порожнистих деталей в процесі зворотно-радіального видавлювання // Обробка матеріалів тиском. – 2019. – № 2 (49). - С. 123-127.

Розглянуто процес зворотно-радіального видавлювання порожнистих деталей з потовщеннями. Методом скінченних елементів за допомогою програмного пакета QForm 2D/3D досліджено напружено-деформований стан заготовки в процесі поетапної деформації. В результаті дослідження отримані картини розподілу інтенсивності деформацій і інтенсивності напружень в осередку деформації на різних стадіях процесу видавлювання. Осередок деформації зосереджений під пуансоном на певну глибину і в стінці одержуваного стакану, а максимальне значення інтенсивності деформацій спостерігаються у перехідної кромки пуансона в області калібруючого пояска пуансона. Обробкою результатів аналізу силового режиму побудований графік залежності сили видавлювання P від ходу робочого пуансона S. Було встановлено що з переміщенням активного пуансону постійно збільшується сила деформування від нуля до 500 кН в кожній з трьох зон видавлювання через те що постійно збільшується обсяг осередку деформації в заготовці, яка деформується.
Уменьшение давления путем вращения пресс-инструмента при радиальном прессовании трубчатых заготовок из порошков металлов
Authors: Kuzmov A. V. , Shtern M. B.
Published: January 2021

Кузьмов А. В., Штерн М. Б. Уменьшение давления путем вращения пресс-инструмента при радиальном прессовании трубчатых заготовок из порошков металлов // Обработка материалов давлением. – 2019. – № 2 (49). - С. 143-149.

Исследуется осевое прессования трубчатых заготовок из порошков металлов совмещенное с вращением друг относительно друга внутренней и внешней стенок пресс-формы с разной угловой скоростью. При этом предполагается полное прилипание материала прессовки к внутренней  и внешней стенкам пресс-формы. Поведение материала прессовки описывается моделью пластичности сжимаемого континуума с деформационным упрочнением на основе  поверхности нагружения, полученной ранее одним из авторов, и ассоциированного закона пластического течения. В силу однородности напряженно-деформированного состояния в объёме прессовки, удалось отыскать выражения для упрочнения и давления прессования  в аналитическом виде. Полученное аналитическое решение многопараметрично и описывает влияние на величину давления прессования констант  упрочнения материала, начальной и конечной плотности прессовки, степени взаимного поворота стенок прес-формы. На основе полученного решения установлено, что кратковременное  приложение  сдвиговых деформаций, обусловленных взаимным вращением элементов пресс-инструмента, в любом случае позволяет снизить величину текущего рабочего  давления в ходе прессования. С другой стороны, в ходе продолжительного процесса прессования упрочнение материала твердой фазы пористого тела, обусловленное дополнительными сдвиговыми деформациями, может приводить к росту радиального  давления при одинаковой конечной плотности. Момент перехода от стадии уменьшения давления к стадии его увеличения существенно зависит от того насколько упрочняемым является материал порошка. То есть, вращение матрицы целесообразно использовать для порошков, материал которых ближе к идеально-пластическому. В большинстве случаев вращение матрицы на протяжении всего процесса прессования целесообразно использовать лишь при не очень значительном уплотнении достаточно пористых заготовок. В случае же уплотнения до малых пористостей целесообразнее вращать стенки матрицы только в конце процесса уплотнения.
Метод прокатування крайок міді для зменшення ризику утворення евтектик зварного шва
Authors: Gavrish P. A. , Gribkov E. P.
Published: January 2021

Гавриш П. А., Грибков Е. П. Метод прокатування крайок міді для зменшення ризику утворення евтектик зварного шва // Обробка матеріалів тиском. – 2019. – № 2 (49). - С. 163-168.

Метою дослідження є аналіз причин утворення кристалізаційних тріщин при зварюванні міді зі сталлю. Основні особливості зварювання міді зі сталлю: низька розчинність міді в залозі і заліза в міді; відмінності в температурах плавлення, кипіння, в структурі і властивостях металів; можливість утворення крихких кристалізаційних прошарків і евтектик довкола зерен в зварному шві; широкий інтервал кристалізації і спорідненість міді до кисню. Виконані експериментальні дослідження геометричних методів регулювання термічного стану при зварюванні. Термічний стан деталей при зварюванні можна регулювати  тепловлкладенням кожного металу. Збільшуючи кут оброблення кромок збільшується кількість наплавленого електродного металу, а значить і збільшується тепловкладення цього металу. Для міді кут оброблення кромок більш ніж для сталі, оскільки теплопровідність міді в 6 разів більше теплопровідності стала. Мідь швидше нагрівається і швидше охолоджується, тому для оптимізації  теплового стану доцільно за рахунок збільшення  наплавленого металу підтримати загальний тепловий стан більш рівномірним. Уточнені кути оброблення кромок деталей при зварюванні окремо для міді і для сталі. Підвищена якість зварних швів різнорідних металів шляхом застосування аналізу конструктивного виконання зварного шва. Досліджений перспективний метод оброблення кромок міді для зварюванні. Використовуючи плющення кромок, в міді створюється анізотропія властивостей метала, що приводить при зварюванні до зниження кількості евтектичних утворень в зварному шві. При розробці технології плющення кромок міді, виконано облік енергосилових параметрів процесу. Розраховані поля еквівалентних пластичних деформацій при плющенні кромок міді залежно від міри обтискання.
Визначення фізико-механічних властивостей металевих порошків для наплавлення
Authors: Gribkov E. P. , Kassov V. D. , Kovalenko A. K.
Published: January 2021

Грибков Е. П., Кассов В. Д., Коваленко А. К. Визначення фізико-механічних властивостей металевих порошків для наплавлення // Обробка матеріалів тиском. – 2019. – № 2 (49). - С. 169-176.

При моделюванні процесів обробки тиском порошкових матеріалів одним з головних параметрів є опис пластичних властивостей порошкової композиції. Не дивлячись на те, що відомими є коефіцієнти пластичності для більшості порошкових композицій, використання в складі порошкових сердечників електродів великої кількості легуючих добавок робить актуальним проведення експериментальних досліджень по визначенню їх фізико-механічних властивостей. У даній роботі представлені результати таких досліджень для порошку на основі хрому наступного складу: хром – 50 %, алюміній – 15 %, реліт – 35 %. Експериментальна установка представляла собою розрізну закриту матрицю з центруючим стрижнем і двома пуансонами. Використання розрізний матриці дозволило визначити крім осьових також радіальні напруження, а використання центруючого стрижня – знизити вплив дотичних напружень. Крім цього установка була оснащена цифровим датчиком лінійних переміщень, що разом з використанням месдоз для визначення осьових і радіальних напружень, а також цифрової апаратури для обробки сигналів дозволило отримати повну картину залежностей напружень від відносної щільності порошкового матеріалу. Знання поточної величини переміщення верхнього пуансона і рівня радіальних і осьових напружень під час деформування заготовки дозволило замінити серію дослідів одним експериментом. В результаті аналізу отриманих експериментальних даних були визначені залежності для коефіцієнтів, що входять в еліптичну умову пластичності для пористих матеріалів від відносної щільності. Визначено їх значення для досліджуваного матеріалу. Шляхом статистичного аналізу дані залежності були уточнені, при цьому коефіцієнт кореляції склав близько 0,99, що вище на 10 ... 14 % від відомих залежностей.
Micromanufacturing by severe plastic deformation
Authors: Beygelzimer Y. , Kulagin R. , Estrin Y. , Davydenko O. , Pylypenko A.
Published: January 2021

Beygelzimer Y., Kulagin R., Estrin Y., Davydenko O., Pylypenko A. Micromanufacturing by severe plastic deformation // Material working by pressure.  – 2019. – № 2 (49). - Р. 87-90.

The production of precision small-scale objects is now a rapidly expanding industry worldwide. In English literature, it has been named "Micromanufacturing" and covers the production of meso (1-10 mm) and micro size (1-1000 microns) for aerospace, automotive, optical, biomedical and other engineering fields. Features of "Micromanufacturing" poses the following challenges for material science. First, the mechanical properties of materials for small-sized products are significantly different from those of traditional mechanical engineering. This means that micromanufacturing requires new materials, and in very small quantities, for traditional mechanical engineering quantities. Small-scale production of new materials by traditional metallurgical methods is, at least, unprofitable. Thus, the problem arises to create technologies that allow to produce small batches of various metallic materials with specified properties. Secondly, micromanufacturing requires sub-microcrystalline materials. Finally, to produce a series of identical products from the same workpiece, the statistical variation in the material properties in its bulk is as narrow as possible. Metallurgical methods designed to produce large volume blanks may not provide the degree of uniformity of materials required for micro-production. The article shows that the solution of these three problems is possible by applying the methods of severe plastic deformation.
Pemphigus Vulgaris Combination Adjuvant Therapy of Systemic Corticosteroid with Sparing Agent Sodium Mycophenolate
Authors: Nopriyati  , Antonius Cayadi Sidarta , Susanti Budiamal  , Inda Astri Aryani
Published: January 2021

Pemphigus Vulgaris(PV) is an autoimmune disease characterized by vesicles and bullae on the skin and mucosa resulting from an autoantibody reaction to desmosomal adhesion molecules desmoglein (Dsg) 1 and 3, which function as strong adhesions between keratinocytes. Pemphigus Vulgarisis more common in the fifth and sixth decades of age. The lesions are fragile blisters on the mucosa and skin. Diagnosing PV requires anamnesis, physical examination,and investigations such as histopathologic examination and direct immunofluorescence. Therapy generally uses steroids. Adjuvant treatmentis given to reduce the side effects of corticosteroids. We reported a male, 59 years old, was treated with blisters that break easily into blisters on the head, face, chest, back, groin and buttocks accompanied by burning and itching. In the scalp, facial, anterior et posteriortrunk, inguinal,and gluteal regions, multiple erythematous maculeswere found with lenticular-plaqueshape; it waspartially confluentwith thick brown crustswhich werechallengingto remove. The histopathologicexamination found the presence of suprabasal bullae with lymphocyte inflammation cells. The patient was diagnosed with PV and treated with corticosteroids with the sparing agent mycophenolate sodium andshowed clinical improvement. The first-linetreatment for pemphigus Vulgarisis systemic corticosteroids. Adjuvant sparing agent therapy is given to reduce the side effects of corticosteroids. Sodium mycophenolate sparing agent was selected because ofitsminimum side effects. In systemic management, the dose of corticosteroid and sparing agent mycophenolate sodium was gradually decreased. The patient experienced initial remission after treatment
Polymorphism of p53 Codon 72 Gene on Cervical Cancer Incidence in Malay Population
Authors: Hayati Lusia , Siska Delvia
Published: January 2021

In Indonesia, the cases of cervical cancer are estimated at around 50 per 100.000 people. Itwas estimatedthattherearemore than 1 millionwomenworldwidewho have cervical cancer,and most of them have not been diagnosed yet or do not have access to screening and medicaltreatment. P53 codon 72 polymorphism can affect the risk of cervical cancer through theregulation of proliferationandcellapoptosis.The purpose of this research was to investigate theassociation between p53 codon 72 polymorphism and cases of cervical cancer. This researchwas observational analytic research. The research was done by examining in the laboratory ofMolecular Biology, Faculty of Medicine, Universitas Sriwijaya by using a case-control studyapproach.Thesampleoftheresearchconsistedof 70 subjects,and they were divided into twogroups:35 in case group and 35 in the control group. The determination of genotype andallotype was done by using PCR-RFLP technics. The results of the research showed there wasa significant difference between p53 codon 72 polymorphism between the case group andcontrol group. The results of genotypes of p53 codon 72 polymorphism in the case groupwere seven respondents (20.0%) with Pro/Pro genotype, five respondents (14.3%) withArg/Arg genotype, and 23 respondents (65.7%) with Pro/Arg. While in control group, there were28 respondents (80.0%) with Pro/Pro genotype, 0 respondent (0.0%) with Arg/Arg genotype,and 7 respondents (20%) with Pro/Arg. The frequency of the Prolin allele in case group was 37(52.9%), and the Arginin allele was 33 (47.1%), while the frequency of the Prolin allele in thecontrol group was 63 (90%), and the Arginin allele was 7 (10%). The Chi-Squareofgenotypewasvalued0.000,OR1,304andCI95%1,071-5,891,whiletheallelewas valued 0.000, OR 8.027 andCI 95% 3.228-19.962. There was anassociation between genotype and allele of p53 codon 72polymorphismandcases of cervicalcancer.
Exploring Community Partners’ Perspectives of the Nature of Service-Learning Partnerships in Egypt
Authors: Shalabi Neivin
Published: January 2021

While some attention has been paid to service-learning partnerships as the unit of analysis, past research on such partnerships focused primarily on the impacts of the collaborations and was based mostly in U.S. contexts. The underrepresentation of community voice in existing literature further complicates the problem. This qualitative study addressed these gaps by exploring community partners’ perspectives on the nature of service-learning relationships in Egypt in light of Enos and Morton’s (2003) framework. Findings indicated current transactional relationships with aspirations for transformation. Community partners’ voices provided lively examples of how transactional and transformative service-learning relationships may become actualized in practice. The outcomes of this study promote an enhanced understanding of the barriers to developing transformative partnerships between university and community partners. Data provided can be used by partners to enhance the design and implementation of service-learning collaborations. The outcomes of this study are especially useful for partners wanting to elevate their partnerships to transformation.
Taustoitusta islamilaisuuteen
Authors: Siirto Ulla Katriina
Published: January 2021

Arviointi Marko Juntusen (2020) kirjasta Matkalla islamilaisessa Suomessa.
The Effect Of Human Relation And Environmental Conditions On Employees Work Ethic
Authors: Yedon Suryadin , Rian Mistar Kaharudin
Published: January 2021

The purpose of this study was to determine and analyze the effect of human relations and working environment conditions partially and simultaneously on the work ethics of Woha's Procurement Service Unit employees. The research method used is associative with a quantitative approach. The sampling technique used was saturated sampling so that the entire population was used as a sample in this study as many as 53 respondents, the research instrument was a questionnaire or questionnaire. Data analysis techniques used are the validity and reliability test, the classic assumption test, multiple linear regression analysis, the coefficient of detemination, the t test and the F test. Based on the results of statistical tests conducted partially human relations have a positive and significant effect on the work ethic of Woha's Procurement Service Unit employees. Based on the results of statistical tests conducted partially human relations have a positive and significant effect on the work ethic of Woha's Procurement Service Unit employees. While the work environment conditions have a negative and not significant effect on the work ethics of Woha's Procurement Service Unit employees. Simultaneously, human relations variables and work environment conditions significantly influence the work ethics of Woha's Procurement Service Unit employees.
The Personal Identification by Means of Cheiloscopy among People of North India
Authors: Mukul Chopra
Published: January 2021

Introduction: Personal identification is becoming increasingly important not only in legal medicine but alsoin criminal investigation, identification and in Genetic Research. The grooves present on the lips are uniquefor every person. Cheiloscopy is a forensic investigation technique that deals with the identification basedon lip traces.The aim of this study was to assess the specific lip print pattern for personal identification, itsuniqueness among males and females and the reliability of the technique in suspect identification at thecrime site.Materials and Methods: The study sample comprised 200 individuals (100 males and 100 females) agedbetween 10 and 50 years; dark?colored lipstick was applied uniformly on the lips and clear impressions ofthe lips were taken on the bond paper. The scanned lip-print image studied using Microsoft office picturemanager. Fingerprints were analyzed by following the classification given by Suzuki and Tsuchihashi.Chi?square test and p-value of the samples were calculated.Results: The study revealed that the lip print patterns for each individual were unique and there was nopeculiar pattern distribution among male and female subjects.Conclusion: Cheiloscopy is analogous to fingerprint analysis and can be used as a tool for individualidentification along with dermatoglyphics. It can also be used as an aid in forensic sex determination.