bluuebunny/crossref_metadata_2025 huggingface dataset:
Dielectric Function of a Quantum-Confined Thin Film with a Modified Pöschel–Teller Potential
Authors: Gasanov Kh. A. , Guseinov J. I. , Abbasov I. I. , Mamedov F. I. , Askerov D. J.
Published: December 2018

The spatial and time dispersions of the dielectric permittivity of an electron gas in quasi-two-dimensional quantum nanostructures are studied. The screening of the charge-carrier scattering potential in a quantum-confined film with a modified P¨oschel–Teller potential is considered for the first time. Analytical expressions for the dielectric permittivity are obtained.
Oleksandr Panteleimonovych Rudenko (to the 80th an-niversary of his birthday)
Authors: Bulavin L. , Cholpan P. , Zabashta Yu. , Kulish M. , Chalyi O. , Sysoev V. , Poperenko L. , Alekseev O. , Malomuzh M. , Svechnikova O. , Moskalenko Yu. , Khorolskyi O.
Published: December 2018

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Friction element for non-linear analysis of friction effect in externally prestressed beams
Authors: Fang De-Ping
Published: December 2018

Analysis of externally prestressed beams involves particular difficulty related to slip between the external tendon and deviator. Slip without friction is usually assumed to simplify the problem. A concise friction element located at the angle bisector between external tendon and deviator is constructed, to simulate the slip with or without friction between the tendon and deviator. The non-linear stress–strain relationships of concrete, steel and external tendon are considered; a trilinear model of the bending moment–axial force–curvature of the beam section is adopted, so that the behaviour of the externally prestressed beam up to ultimate state can be investigated. Calculations regarding a simply supported beam and continuous beam for various factors are conducted, including different friction coefficients, different areas of external tendon and steel bar, different eccentricities, symmetric or asymmetric load patterns. Results indicate that, for the simply supported beam and continuous beam under symmetric load, the friction effect on load-carrying capacity is negligible; the friction effect on maximum prestress increment and deflection may not be negligible; the friction effect on minimum prestress increment is obvious. For a continuous beam under asymmetric load, the friction effect on load-carrying capacity, maximum and minimum prestress increments and deflection cannot be neglected.
Analysis of lycopene in bacterial extracts v1
Authors: Carballo-Uicab Victor , Cárdenas-Conejo Yair , Vallejo-Cardona Alba , Aguilar-Espinosa Margarita , Rodríguez-Campos Jacobo , Serrano Posada Hugo , Alberto Narváez Zapata José , Rivera-Madrid Renata
Published: December 2018

Analysis of lycopene in bacterial extracts
PROFESSIONAL-EDUCATIONAL LEVEL AS THE CRITERIA OF THE MIDDLE-CLASS PARTICIPATION IN THE CAPITAL REGION OF UKRAINE: SOCIAL-GEOGRAPHICAL INVESTIGATION
Authors: Oliinyk Y. , Pereguda Y.
Published: December 2018

The article reveals the identification problems of the middle class in Ukraine, on the example of the capital’s macro-district. It shows that scientific approaches applied in foreign scientific schools cannot be used in Ukrainian conditions because of a number of reasons. In particular, the low level of income in the country as a whole caused a decline in the acceptable level of income. That is, the sense of the term “middle class” in Ukrainian conditions has a completely different context. On the other hand, the Ukrainian national currency has a larger purchasing power, than us dollar has, for example. Therefore, one cannot directly compare the incomes of Ukrainian citizens and the incomes of residents of economically developed countries. In addition, due to the specific nature of the methodological base of Ukrainian state statistics, the state does not collect data on the middle class. Consequently, the identification of the middle class in Ukrainian conditions is an important practical and scientific problem. One of the approaches that make it possible to circumvent these contradictions is the subjective method, that is, the carrying out of sociological research. The authors of the article present the data of such an investigation, which was made within the frontiers of the Metropolitan macro-district. As a result, the authors found the vocational and educational level is one of the determining factors, which in the public perception should be attributed to the middle class. Because of the survey, it was established that property criteria, after all, are decisive in identifying the middle class. At the same time, the level of education and profession is important as the level of income. This allows us to conclude that public opinion in Ukraine identifies the middle class not only as a group of people with a certain level of income but also as a community with high levels of education and self-awareness. For the capital’s macro-district of Ukraine, its own characteristics of the middle class have few characteristics. Although the income level of the population in this macro-region is the highest, the criteria for identifying the middle class are also high. It is significant that the understanding of the middle class in Ukrainian society has its own specifics. For the Ukrainian class is not required the availability of their own housing or their own car. The level of well-being measured as a whole by the level of income that the household receives.
GLOBAL POLITICAL INSTABILITY AS A FACTOR OF INTERNATIONAL TOURISM
Authors: Tkachuk L.
Published: December 2018

The article is devoted to the disclosure the ways in which the global international political instability influence the international tourism. In particular, the components of global international political instability are described and indices that determine the level of security and threats in different countries of the world are analyzed. Political stability and safety are prerequisites for tourism; even the threat of events such as civil unrest and terrorism can cause tourists to rethink their decision to visit a destination. In order to evaluate how different components of geopolitical instability influence on international tourism, the results of surveys of consumer behaviour of tourists for different years are analyzed. Terrorism is identified as the most alarming for travellers type of geopolitical factors. Over 40% of all international travellers plan to change their travel behaviour due to terror concerns. The safest and dangerous, from the tourists point of view, destinations are disclosed. Destinations such as Turkey, Egypt and Tunisia which have all suffered terror attacks in recent years are still seen as particularly unsafe. And the USA and the UK are new on the list of ‘potentially endangered’ destinations. It is proposed to consider the global instability as the geopolitical risks of international tourism because of unpredictable of its effect for different tourist destinations. The geopolitical risk for tourism is defined as the risk associated with wars, terrorist acts, and tensions between states that affect international tourism. Countries affected by political unrest inevitably experience a decline in the number of international tourists and tourism receipts however on different scales. On the other hand, some destinations which are seen as particularly safe could thus benefit from the travellers who shift destinations due to the terrorist threat. Recommendations on levelling negative effects of geopolitical instability for tourist demand are formulated. The course of action should be targeted at four key fields: crisis management, incentives for tourists, perception management and rebranding of the tourism destination.
ANALYSIS OF DEVELOPMENT OF AGRICULTURAL MACHINERY PRODUCTION FOR GRAIN GROWING IN UKRAINE DURING INDEPENDENCE
Authors: Karpenko O.
Published: December 2018

In the article the research of tendencies of development of agricultural mechanical engineering is conducted. Particular attention was paid to analyzing the peculiarities of the development of agricultural machinery production for grain farming and the trends in the current state of the industry. It was established that the agricultural machinery industry of Ukraine gradually began to revive. The results of the analysis of the development of the production of agricultural machinery for grain farming have made it possible to conclude that it is precisely the investment resources that will lead to the emergence of agricultural machinery, namely the production of machinery for grain production, from the crisis. The volume of import of agricultural products is estimated. An important place in the work is the assessment of the availability of grain machinery. The paper formulates the main tasks of enterprises for the production of agricultural machinery for the grain industry. The agrarian sector for Ukraine has always been one of the priority areas of both foreign economic and domestic economic development. Almost in all countries of the world now focus on the development of the agro-industrial complex, because the problem of providing the world’s population with food is extremely relevant. Ukraine has great prospects in this direction. But they are based primarily on the very high fertility of the soil that our state has. Ukraine has favorable weather and climatic conditions and historically inherited experience of our country’s population to produce food, work on the ground. Thanks to these factors, Ukraine was originally called the world’s breadbasket. Cereal product complex is one of the largest and most important in all agroindustrial complex of Ukraine. It is an important part of the agricultural complex. The development of the grain economy not only provides the population with grain products, but also can stabilize the socio-economic situation in the country. During the entire period of development of society in the territory of our state, much attention was paid to increasing the yield of grain. It is also possible to achieve an increase in gross collections of grain through the improvement of tools. That is why the development of the agricultural machinery industry can be considered the longest of all the well-known fields of machine building [2], since the production of machinery for the grain-product complex is one of the important components of the grain industry in general. Machine-building enterprises for the grain-product complex are located in the main grain areas. The development of the production of machinery in the grain-harvesting complex in Ukraine after the election of its independence has undergone significant changes, and the problem of the production of certain types of grain machinery has become very acute.
Making Science Education Accessible to All
Authors: Margolin Lerman Zafra
Published: December 2018

ABSTRACTMany students shy away from science. In order to attract students into studying science, creative methods for teaching and learning were developed for all levels of education, from primary school to university, and from formal to informal settings. These methods utilize the students’ talents, hobbies, interests and cultural backgrounds. Equal access to science education is a human right that belongs to all [1, 2]. If we do not guarantee science education to all, we will form a two-class society divided not by royalty and status, but by knowledge of science. The centerpiece for this method is the development of student projects, which help them to remember and understand abstract scientific concepts. An old Chinese proverb says: “I hear and I forget; I see and I remember; I do and I understand.” These students’ projects take advantage of seeing and remembering, doing and understanding.Through this process, students are active learners, instead of being passive observers. To demonstrate their understanding of scientific concepts through their projects, the students use a media of their choice, from drawing, dance and drama (no tech) to computer animation (high tech). Projects can also take the form of paintings, sculptures, songs, films, and scripts for theater. These projects are used as alternative assessment methods where the whole class is involved in the assessment process. In order for this method to be successful, workshops for teachers as well as parents must be conducted. This way, the students will be taught in a creative way in school and through the joint involvement of teachers and parents, students will be encouraged to pursue chemistry. After all, “it takes a village to raise a child,” as the African proverb states.
TIC y discapacidad. Conocimiento del profesorado de educación primaria en Andalucía
Authors: Fernández Batanero José Mª , Román Graván Pedro , El Homrani Mohammed
Published: December 2018

RESUMENEn la actualidad, debemos considerar la formación permanente del profesorado y, con ella, el aprendizaje continuo, como necesarios y esenciales para desarrollar una educación de calidad en igualdad y equidad. En este contexto, las TIC abren una nueva forma de acceder a la información y un gran puente de comunicación, ya que para algunas personas las tecnologías constituyen la única vía de acceso al mundo educativo y de la cultura. En este artículo se presentan los resultados obtenidos en una investigación cuyo propósito se centró en la identificación del nivel de formación y conocimiento tecnológico que el profesorado de educación primaria, de las provincias de Granada, Huelva, Jaén y Sevilla, tienen respecto a la aplicación de las TIC para personas con discapacidad. A partir de un diseño de investigación del tipo ex post-facto descriptivo, la muestra estuvo compuesta por 425 docentes. Como estrategia de recogida de información empleamos un cuestionario confeccionado ad hoc, validado mediante el procedimiento de “Coeficiente de competencia experta” o “Coeficiente K”. El nivel de fiabilidad del instrumento fue analizado mediante la alfa de Cronbach. Entre los resultados obtenidos destacamos la baja capacitación del profesorado.Palabras Clave: tecnologías de la información y comunicación, discapacidad, inclusión educativa, accesibilidad.ABSTRACTAt present, we must consider the ongoing training of teachers and, with it, continuous learning, as necessary and essential to develop a quality education in equality and equity. In this context, ICTs open a new way of accessing information and a great communication bridge, since for some people technologies are the only way to access the world of education and culture. The article presents the results of an investigation whose purpose is focused on identifying the level of training and technological knowledge that the specialist in physical education primary teachers of Primary Education of Seville and its province, with respect to the application of ICT for people with disabilities. From a research design type descriptive ex post facto, the sample was composed of 87 teachers. As information collection strategy used a questionnaire prepared ad hoc, validated by the process of “coefficient expert competence” or “K Coefficient”. The level of reliability of the instrument was analyzed by Cronbach’s alpha. Among the results we highlight the low training of primary school teachers regarding the application of ICT for students with disabilities.Keywords: information and communication technology, disability, educational inclusion, accessibility.
Redes sociales y estudiantes: motivos de uso y gratificaciones. Evidencias para el aprendizaje
Authors: García-Ruiz Rosa , Tirado Morueta Ramón , Hernando Gómez Angel
Published: December 2018

Aunque las nuevas generaciones utilizan las redes sociales como un medio de comunicación habitual, en el ámbito educativo aún no se han utilizado de manera generalizada por los docentes como recurso didáctico. Conocer las gratificaciones que encuentran las nuevas generaciones al usar las redes sociales, permitirá al profesorado hacer un uso estimulante de estos medios en la educación secundaria y universitaria. El objetivo de este trabajo es conocer cuáles son las gratificaciones que encuentran los estudiantes de educación secundaria y universitaria al utilizar intensamente las redes sociales Facebook, Instagram y YouTube. Utilizando la teoría de Usos y Gratificaciones, se recogen datos a través de un cuestionario de estudiantes españoles de educación secundaria (N=260) y universitarios (N=315).  Los resultados muestran que los estudiantes de secundaria buscan una mayor presencia social y velan por su propia imagen, mientras que los estudiantes universitarios buscan entretenimiento. Finalmente, se discuten los resultados y las implicaciones para un uso estimulante y didáctico de las redes sociales en contexto de enseñanza-aprendizaje.
Estudiantes Universitarios: prosumidores de recursos digitales y mediáticos en la era de Internet
Authors: Bonilla-del-Río Mónica , Diego-Mantecón Jose Manuel , Lena-Acebo Francisco Javier
Published: December 2018

A pesar de la relevancia que los recursos digitales y mediáticos han adquirido en nuestra sociedad, la adquisición de competencias para su uso adecuado y responsable en el contexto educativo no está garantizada. Este trabajo busca analizar los hábitos de producción y utilización de los recursos digitales y mediáticos de una muestra de 252 universitarios españoles, con el objetivo de conocer su competencia digital y su aprovechamiento para un uso educativo. Los resultados revelan una competencia media/alta de los universitarios en cuanto al manejo de los recursos mediáticos y digitales, así como una percepción positiva de la red como fuente valiosa de la que adquirir conocimiento y ampliar información. Admiten utilizar los recursos digitales y mediáticos para trabajar de forma colaborativa y ayudarse en tareas académicas, aunque no producen contenido académico o información en plataformas educativas; es decir, se consideran consumidores mediáticos, pero no productores. Se observó además que los universitarios mayores de 25 años son prosumidores más activos, en lo que se refiera a contenidos e información relacionada con temas académicos, que los estudiantes menores de 26 años, quienes utilizan más las redes para producir y compartir datos personales.
La “buena universidad” desde la experiencia crítica
Authors: Morales Isabel , Reina Onowa , Manzano-Arondo Vicente
Published: December 2018

RESUMENExiste ya una gran acumulación de trabajos que critican el modo en que la universidad se está concretando, tanto a nivel local comomundial. Las principales críticas se centran en la orientación mercantil, tanto como en el abandono de la identidad basada en laconstrucción colectiva y desinteresada de conocimiento. A pesar de la envergadura de la crítica, las publicaciones no abundan enla descripción de alternativas, que reciben comparativamente muy poco esfuerzo. Se observa, además, que los procesos de cambiose afianzan con rapidez y poca resistencia, por lo que resulta ya urgente dar forma a modos alternativos de hacer universidad. Porello, este trabajo plantea un diagnóstico crítico sobre la institución actual, pero se sitúa en una clara perspectiva propositiva. Para ellorealiza una investigación empírica mediante entrevistas en profundidad a 16 miembros del profesorado universitario español que hanpublicado trabajos críticos en torno a la universidad y a principios rectores o propuestas concretas. El objetivo fue no solo describirsomeramente la universidad que contempla este profesorado experimentado sobre el asunto, sino también identificar barreras para suconsecución y posibles soluciones. Los resultados permiten identificar varias categorías relevantes y diseñar un guion de trabajo paraorientar el proceso hacia la buena universidad.Palabras Clave: Buena universidad, Universidad crítica, Revolución universitaria, Transformación de la universidad.ABSTRACTThere is already a great accumulation of work that criticize the way in which the university is specifying itself, both locally and globally.The majority of the criticism focuses on the commercial orientation, as well as on the abandonment of identity based on the collectiveand uninterested construction of knowledge. Despite the magnitude of the criticism, publications do not abound in the description ofalternatives, which receive comparatively very little effort. It is also observed that the processes of change take hold quickly and withlittle resistance, therefore it appears to be urgent to give shape to alternative ways of making universities. Therefore, this work is placedin a clear propositional perspective. To do this, it conducts an empirical investigation through in-depth interviews with 16 members ofSpanish university teaching staff who have published critical works about the university. The objective wasn’t only the mere descriptionthat these experienced professors contemplate but to also identify the barriers for its achievement and possible solutions. The resultspermit to identify various relevant categories and design a work script to guide the process towards good university.Keywords: Tgood university, Critical university, Revolutionary university, Transformation of the university.
Universidad e investigación para el bien común: la función social de la Universidad
Authors: Díez Gutiérrez Enrique Javier
Published: December 2018

RESUMENEn un Estado Social y Democrático la universidad ha de orientarse a la prestación de un servicio público de generación de conocimiento en el que se contemplen los intereses generales de la ciudadanía, el bien común, funcionando como un agente de cambio y mejora social. Pero nuestras instituciones de  ducación superior, siguiendo lógicas globales neoliberales, promovidas por  organizaciones económicas internacionales, se están transformando  progresivamente en “universidades corporativas o emprendedoras” dominadas por una cultura empresarial interesada sobre todo en lograr posiciones sobresalientes en rankings internacionales. Es hora de defender un modelo de universidad pública al servicio de las necesidades sociales reales y prioritarias y no solo las demandas del mercado. Pero también es necesario profundizar y priorizar la función social de la universidad, consiguiendo un contrato con la sociedad en su conjunto, que entienda la universidad no solo como institución académica de prestigio, sino como un bien público y un agente dinamizador para la transformación social. Este modelo social de Universidad debería basarse en el refuerzo del compromiso y la responsabilidad social de las universidades públicas, la vinculación con los sectores sociales más desfavorecidos y el  compromiso mutuo en pos de la justicia social.Palabras Clave: Educación Superior, Capitalismo académico, Función social de la Universidad, Bien Común, Servicio Público.ABSTRACTIn a social and democratic state, universities must strive to provide a public service, generating knowledge of general interest to citizens for the common good and working as agents of social change and improvement. However, in line with the global neoliberal logic promoted by international economic organisations, universities are increasingly metamorphosing into “corporate or entrepreneurial institutions” dominated by a business culture primarily nterested in achieving a high international ranking. It is time to defend the model of a public university in the service of real, pressing social needs rather than market demands. It is also necessary to prioritise and expand the social function of universities, establishing a contract with society as a whole that considers the university not only as a prestigious academic institution but also as a common good and a dynamic agent for social change. This social model of the university should be based on strengthening public universities’ social responsibility and commitment, ties with the most disadvantaged sectors of society and a mutual commitment to social justice.Keywords: Higher education, Academic capitalism, Social function of universities, Common good, Public service.
Un estudio exploratorio sobre los errores y las dificultades del alumnado de Bachillerato respecto al concepto de derivada
Authors: González-García Antonio , Muñiz-Rodríguez Laura , Rodríguez-Muñiz Luis José
Published: December 2018

RESUMENLos errores que comete el alumnado al resolver una tarea matemática suponen una herramienta poderosa para detectar dificultades en el aprendizaje de esta disciplina. Su diagnóstico permite el desarrollo de técnicas de enseñanza que eviten o remedien su cometido. Este artículo presenta los resultados de un estudio exploratorio cuyo objetivo es analizar los errores que comete el alumnado al estudiar el concepto de derivada de una función. Para ello se examinaron los errores cometidos por 27 estudiantes de 1º de Bachillerato durante la resolución de una serie de ejercicios. Los resultados permiten identificar aquellas categorías en las que los estudiantes cometen mayores errores en el estudio de la derivada. El análisis también revela dificultades causadas por un aprendizaje deficiente de conocimientos previos. Todo ello invita a reflexionar sobre la necesidad de fomentar un análisis lógico y coherente de los conceptos, del lenguaje y de las soluciones, a la hora de resolver problemas matemáticos.Palabras Clave: Bachillerato, Derivada, Dificultades, Errores, Matemáticas.ABSTRACTThe errors that students make when solving a mathematical problem are a powerful tool to detect difficulties in the learning of this discipline. Their diagnosis allows the development of teaching techniques that avoid or rectify their commission. This article presents the results of an exploratory study which aims at analyzing the errors that students make when studying the concept of derivative of a function. To this end, the errors made by 27 high school students during the resolution of a series of exercises are examined. The results allow to identify those categories in which students make a higher number of errors when studying the derivative. The analysis also reveals difficulties caused by poor learning of prior knowledge. The later invites to reflect on the need to promote a logical and coherent analysis of concepts, language and solutions, when solving mathematical problems.Keywords: Derivative, Difficulties, Errors, High school, Mathematics.
Algorithm for the management of patients with incompetence of postoperative uterine scar after a cesarean section, our clinical experience
Authors: Kogan O. M. , Voytenko N. B. , Zosimova E. A. , Martynova E. N. , Nersesayn D. M. , Bubnikovich A. A.
Published: December 2018

The growth of the cesarean section frequency has created a new healthcare problem – follow up of pregnancy in women with a uterine scar. The pregnancy course in the case of an incompetent uterine scar poses risks of not only a premature labor, but also of a uterine rupture during the entire gestation. Currently, the issues of the diagnostics and reconstructive surgery for an incompetent uterine scar after a cesarean section when planning a pregnancy remain understudied.
Custo para implantação dos níveis de desempenho acústico da NBR 15575 em sistemas de vedações verticais
Authors: Coelho Rafael Vigário , Rohden Abrahão Bernardo
Published: December 2018

O desempenho das edificações residenciais brasileiras alcançou nova escala a partir da entrada em vigor, em 2013, da ABNT NBR 15575, a Norma de Desempenho. Esta norma traz exigências que vários sistemas de uma edificação devem cumprir para que atendam aos níveis de desempenho mínimo, intermediário ou superior. Um dos sistemas prescritos é o de vedações verticais (externas e internas). O objetivo deste artigo é comparar o custo para adequação dos sistemas de vedações verticais interna e externa de uma edificação residencial multifamiliar aos três níveis de desempenho acústico da NBR 15575. Para isso analisou-se o pavimento tipo de um projeto de edificação residencial multifamiliar, compondo as tipologias necessárias para o atendimento das vedações verticais deste edifício aos três níveis de desempenho acústico da referida norma. A comparação de custo foi realizada entre níveis nas vedações externas e internas, e também entre diferentes materiais (blocos cerâmicos e drywall) nas paredes internas. Os resultados mostram que a diferença de custo para adotar os níveis de desempenho intermediário e superior nas vedações em relação ao nível mínimo é de aproximadamente 11% e 22%, nesta ordem, em relação ao custo das vedações verticais que atendam ao nível mínimo de desempenho. Estes consideráveis aumentos ocorrem principalmente por conta da grande influência que as esquadrias de alumínio e portas de madeira exercem sobre as vedações verticais, dado que o custo destes itens aumenta significativamente de acordo com seus desempenhos acústicos.
Avaliação do desempenho mecânico de misturas asfálticas mornas através de ensaios de tração indireta
Authors: Schuster Luana , Dalla Rosa Francisco , De Cezaro Junior Tadeu
Published: December 2018

Este trabalho apresenta uma análise comparativa, através de ensaios de tração indireta, dos efeitos da redução da temperatura de produção e de compactação de misturas asfálticas mornas – a partir da incorporação de aditivo químico surfactante – frente a uma mistura asfáltica convencional. Com base na elaboração do projeto de dosagem de uma mistura asfáltica de referência, foi confeccionada uma mistura controle, a uma temperatura fixa, e, em seguida, compactada sob três faixas de temperatura distintas. Da mesma forma, na elaboração da mistura asfáltica morna, fixou-se a temperatura de produção, observando uma redução de 10°C em relação à mistura convencional, e, posteriormente, cinco variações na temperatura de compactação. Na análise da resistência à tração indireta, ambas misturas apresentaram sensibilidade às variações de temperatura propostas, reduzindo os valores de resistência à medida em que a temperatura de compactação decaia. Entretanto, quando incorporado o aditivo surfactante à mistura, obteve-se significativo ganho na resistência à tração por compressão diametral, resultado em valores superiores de resistência para a mistura asfáltica morna, em todas as faixas de temperatura consideradas.
Формирование ассортимента розничной торговли в условиях цифровой экономики
Authors: Бойкова Анастасия Владимировна
Published: December 2018

Цифровые технологии получают все большее развитие в современной жизни общества. В этой связи многие подходы, традиционно применяемые в традиционной торговле, требуют существенного обновления для применения в электронной торговле. Одной из важных задач для торговых организаций является формирование и анализ товарного ассортимента, при этом ряд подходов, применяемых в традиционной торговле, теряют свою эффективность в условиях цифровой экономики. В статье рассматриваются особенности формирования ассортимента в организациях, осуществляющих свою деятельность в области электронной торговли. Большое внимание уделяется комплексному анализу формирования покупательских корзин и, как следствие, реализации товаров. Также отмечается роль качества товаров, представленных в ассортименте торговой организации, в формировании делового имиджа Интернет-магазина.
Оценка эффективности торговой деятельности в социальных сетях
Authors: Грошева Юлиана Валерьевна
Published: December 2018

В современной России вопрос развития малых и средних торговых организаций является актуальным. В данной статье рассмотрены особенности малых и средних торговых предприятий, составлена классификация методов повышения эффективности их деятельности, а также изучены наиболее распространенные методы оценки результативности. Условия развития цифровой экономики также определяют высокий потенциал использования телекоммуникационных возможностей, в частности – потенциала социальных сетей. Таким образом, в статье рассматриваются инновационные методы оценки эффективности торговой деятельности в современных условиях.
Трансформация ассортимента ритейла в разрезе тренда здорового питания
Authors: Красильникова Елена Анатольевна , Бойкова Анастасия Владимировна
Published: December 2018

В статье оцениваются тенденции изменения пищевой культуры россиян в разрезе мировых трендов. В частности, приводятся данные по увеличению доли населения с избыточным весом в России и мире, фиксируется повышенное внимание к товарам ассортиментных групп «здорового питания». В рамках Центрального федерального округа РФ анализируется структура потребления, оцениваются пищевые привычки жителей в количественном соотношении основных товарных групп. Аспект проблемы трансформации ритейла изучается, в том числе с учетом обеспеченности регионов продовольствием.
Тенденции двухзначных приростов экспорта: оздоровление структуры или задачи сохранения положительного сальдо
Authors: Красильникова Елена Анатольевна , Никишин Александр Федорович
Published: December 2018

В представленной научной статье рассматривается динамика макроэкономических показателей внешней торговли Российской Федерации. Оценивается структура внешнеторгового баланса в прошлом и текущем годах. Детальное внимание уделено основным тенденциям структуры экспорта Российской Федерации в 2016-2018 гг. Представляются интересными темпы прироста объемов вывозимых из страны топливно-энергетических и продовольственных товаров, сельскохозяйственного сырья.
Перспективы использования нейротехнологий в различных отраслях цифровой экономики
Authors: Панасенко Светлана Викторовна , Мкртчян Вардан Суренович
Published: December 2018

В статье рассмотрены перспективы использования нейротехнологий в различных отраслях цифровой экономики с учетом современного экономического состояния России, особенностей финансирования проектов в этом направлении, в том числе за рубежом, исследованы долгосрочные последствия от применения интеллектуальных технологий, имеющие как положительный, так и отрицательный характер, которые могут оказать непосредственное влияние на производительность труда, эффективность производства, коммуникаций, показатели деятельности организаций в различных сферах (в том числе и в торговой). Сформированы выводы и предложения по созданию наиболее благоприятных условий (кадровых, информационных, организационных и других) для оптимального внедрения нейротехнологий и повышению конкурентоспособности экономики России в целом и ее отдельных отраслей и межотраслевых комплексов.
‘Something Borrowed, Something New’: Memory and Oblivion in Food Discourse in Post-Soviet Eastern Europe
Authors: Perianova Irina
Published: December 2018

The article highlights the discourse of food as it relates to memory and oblivion. Though memory is an ability to store and reproduce information, frequently individual or even collective reproductions hardly match reality. As an object of longing in reconstructing and reimagining the past to fit real or perceived identity, food is one of the mainstays of nostalgia. Nostalgia is also the reason why an old narrative, when it is refashioned and imported into a new frame as a new narrative, may be of doubtful veracity. As our food memories bridge the chasms of time and space and define not only our eating habits but our identity, the importance of what and how we remember cannot be overstated. The object of the article is threefold. On the basis of the culinary myths of the former Soviet Union and Eastern Europe, it shows how memory traps result in a non-isomorphic perception of reality. Secondly, it describes the transformation of food memories for a diaspora. Finally, it illustrates certain functions of food, such as protest, which may be viewed as a challenge to oblivion.
Impact of Lecturer’s Discourse for Students’ Video Engagement: Video Learning Analytics Case Study of MOOCs
Authors: Atapattu Thushari , Falkner Katrina
Published: December 2018

Lecture videos are amongst the most widely used instructional methods in present Massive Open Online Courses (MOOCs) and other digital educational platforms. As the main form of instruction, students’ engagement behaviour with videos directly impacts the students’ success or failure and accordingly, in-video dropouts positively correlate with dropout from MOOCs. The primary focus of previous video learning analytics studies is on analysing video engagement behaviour using explicit factors (i.e. views or annotations). Limited research studies focus on implicit video learning analytics (e.g. pause, seek, content type) and their impact on students’ success, with existing studies addressing video interactions and their relationship with visual transitions. We aim to explore the association between video interactions and non-visual (i.e. verbal or discourse) transition. This research focuses on text (e.g. cohesion and syntactic complexity) and spoken (e.g. speaking rate) discourse features of lecture videos. We conduct a fine-grained analysis of 3.4 million video interactions of two AdelaideX MOOCs – Programming (Code101x) and Cyber, Surveillance and Security (Cyber101x). According to our results, some discourse features (e.g. lexical diversity and causal connectives) demonstrate statistically significant correlation with video interactions. We present insights for educational video design implications based on discourse processing theories.
BREEDING AND BIOCHEMICAL CHARACTERISTICS OF FORMS OF ALLIUM CREATED ON THE BASIS OF INTERSPECIFIC HYBRIDIZATION
Authors: Romanov V. S. , Molchanova A. V. , Pavlova O. V. , Tareeva M. M.
Published: December 2018

One of the most important crops among all types of Alliums is onion, the value of which is determined by the nutritional and medicinal properties. It is used not only as a seasoning for food, but also as a source of a number of biologically active substances. The biochemical composition of the bulbs and its green leaves in different periods of growth and development varies, depending on the variety, environmental conditions and agrotechnical methods of cultivation. Creation on the basis of interspecies hybridization of fundamentally new forms of Allium plants with a unique combination of genetic material allows to expand the possibility of selection of valuable genotypes in practical terms. The study was performed on plants of the inbred progenies I4-5 from BC1-2 bulbous forms of interspecific hybrids of Allium crossing combinations F5(A. cepa xA. vavilovii), F5(A. cepa x A. fistulosum). The biometric assessment was carried out after harvesting and drying the bulbs according to the "test Procedure for distinctiveness, uniformity and stability" according to the main breeding characteristics: the color of the dry cover scales of the bulb, the mass of the bulb, the shape of the bulb. As the standard used plant varieties Odintsovets. The biochemical composition of onion samples was determined by the content of dry matter, monosaccharides, the amount of sugars, ascorbic acid, antioxidants. Based on the biometric assessment of the forms of interspecific hybrids of onions, 5 forms were identified according to the uniformity of such features as the color of dry cover scales and the shape of the bulb weighing 50-60 g, which are a qualitatively new source material for breeding. In determining the biochemical composition of the isolated forms of interspecific hybrids of Alliums on the main breeding grounds found that the plants of these forms of onions indicators of dry matter (15%), monosaccharides (1.15-1.71%), the amount of sugars (11.17%), were at the level of the standard, or exceeded it, but the total content of antioxidants (8.22 mg/g) inferior to the standard.
APPLICATION RESULTS OF CUCUMBER GRAFTING ON DIFFERENT ROOTSTOSKS OF PUMPKIN
Authors: Martirosyan G. S.
Published: December 2018

At present it is very actual in vegetable growing the development of highly effective and ecologically safe methods for increasing yields and plant resistance to unfavorable growth conditions. One of these methods is grafting. The goal of the study was to learn the influence of the rootstock on the characteristics of the growth, development and yield of cucumber. Research was conducted in 2015-2016 in greenhouse in spring-summer period in Armenia. As a scions was used cucumber variety Nazrvan, which was grafted on 5 pumpkin rootstocks (VI033637, VI03338, VI03364, VI040903, VI056328) from the collection of the World Vegetable Center (WVC). The grafting was carried out according to the standard method. When the VI033637 rootstock was used, flowering started 5 days earlier than the ungrafted plants, while when grafted on VI040903, the fruits ripened 6.2 days earlier. High increase of early yield (33.3%) received when used both above mentioned rootstocks. VI033638 – 4.1 kg/m2 and VI033664- 9.9 kg/m2 samples provided high increase of the total yield. For all the types of rootstocks the grafted plants of cucumber surpass the non-grafted ones by height from 4.7 % to 21.7%, by marketability of fruits from 5% to 14% and by fruit mass from 15 gr to 45 g. At the beginning of fruit-setting of cucumber plants the number of female flowers increased from 27% to 63% depending on the rootstock sample. The amount of dry substances in all grafted plants has increased by 4.4-8.8% and the amount of vitamin C by 1.8-9.2%. As a result of research carried out by us, perspective rootstocks (VIO33638 and VIO33664) are identified by a set of economically valuable characteristics which are recommended for applying in the further investigation and breeding activities and in production of grafted plants.
PRODUCT FUNCTIONAL PURPOSE ON THE BASIS OF THE JERUSALEM ARTICHOKE
Authors: Fedosenko T. V. , Patsyuk L. K. , Medvedeva E. A. , Nariniants T. V.
Published: December 2018

To achieve goal, the following tasks were solved: recipes for a new type of functional canned food – "Dessert of Jerusalem artichoke", consisting of a mixture of vegetables and fruits (based on Jerusalem artichoke), which has good organoleptic characteristics, experimental samples were made and their physico-chemical and organoleptic characteristics were determined. At the same time, when developing the formulations of the selected range of functional foods, it is necessary to proceed from the requirements of GOST R 52349-2005 "functional Foods" from which it follows that each portion of the functional product must contain at least 15% of the daily consumption rate established By the Institute of nutrition of the Russian Academy of Sciences for a specific physiologically functional ingredient. To choose the best recipe of "Dessert" were made comparative experimental samples of canned food with the content of Jerusalem artichoke, as the main component, from 30 to 45%. The best composition of canned food "Dessert of Jerusalem artichoke", which received an average rating of 4.5 points, as a result of sensory analysis by rating, using a score scale, the following content of components: puree of Jerusalem artichoke – 40%, mashed carrots – 30%, mashed apples – 30%. According to the results of sensory evaluation of the intensity of the characteristics of the profiles for each of the five indicators: taste, color, aroma, appearance and consistency, as well as a diagram of the overall organoleptic evaluation of a new type of functional product "Dessert of Jerusalem artichoke".
GENETIC SOURCES OF RESISTANCE TO ROOT ROTS CYCORY FROM DIFFERENT ECOLOGICAL AND GEOGRAPHICAL ORIGIN
Authors: Vyutnova O. M. , Polyanina T. U.
Published: December 2018

The main type of root chicory diseases are root rot of root crops. In unfavorable years, they affect up to 40-50% of root crops, which are culled from the test weight and are not paid for when the crop is delivered to the processing enterprises. The most common lesions of the roots of chicory various pathogenic species of fungi: Phoma rostrupii Sacc., Botrytis cinerea (P.) Fr. J, Erwiria carotovora (Jones) Holt. Production is in dire need of new varieties of root chicory, resistant to root rot both during the growing season and during long-term storage. To develop transgenic varieties among the many varieties to allocate genetic sources of this feature below in further breeding work to fix him in generations. The article presents the data on the study of the defeat of root crops of root chicory varieties of different ecological and geographical origin of different types of root rot in the collection nursery (including the provocative background) for 2015-2017 in the NonChernozem zone of the Russian Federation in the Rostov region of the Yaroslavl oblast. The best resistance to root rot were varieties Luxor (Holland) and Harpachi (Hungary), the roots of which did not have signs of root rot, varieties Petrovsky (Russia), Wixor (Holland) and Sleszka (Czech Republic) were weakly affected (less than 2%). During the long winter storage, the best on this basis, proven varieties Harpachi (Hungary), Spicak (Czech Republic) and Luxor (the Netherlands), which had been preserved. These varieties can serve as a source of resistance to root rot and can be involved in the selection process as a donor of this feature.
Directional Pulse/Tone Based Channel Reservation with Deafness Avoidance
Authors: De M. Guimarães Lucas , L. Bordim Jacir
Published: December 2018

The use of directional antennas in support of ad hoc networks has been considered a promising alternative to improve spatial division multiple access and throughput. In general, directional Medium Access Control (MAC) protocols are based on IEEE 802.11 standard, which was designed for omnidirectional communication. When applied to di- rectional communication, the standard imposes a number of constraints to the directional MAC protocol. In order to harvest the benefits of directional communications, MAC pro- tocols tailored for directional antennas have to be devised. In particular, MAC protocols that are able to deal with deafness and channel reservation latency are highly desirable. This work proposes a technique that enables channel reservation and mitigates deafness using pulse/tone signals in the context of directional communications. At its heart, the proposed technique incorporates a deafness predictions scheme that helps nodes to over- come its effects. Analytical results show that the proposed technique is able to improve throughput up to 40% when compared to other prominent directional MAC protocols. Simulation results show that the proposed scheme improves fairness and throughput up to 350% and 76%, respectively.
Production Framework for Full Panoramic Scenes with Photorealistic Augmented Reality
Authors: Quintanilha Felinto Dalai , René Zang Aldo , Velho Luiz
Published: December 2018

The novelty of our proposal is the end-to-end solution to combine computer generated elements and captured panoramas. This framework supports productions specially aimed at spherical dis- plays (e.g., fulldomes). Full panoramas are popular in the computer graphics industry. However their common usage on environment lighting and reflection maps are often restrict to conven- tional displays. With a keen eye in what may be the next trend in the filmmaking industry, we address the particularities of those productions, exploring a new representation of the space by storing the depth together with the light map, in a full panoramic light-depth map.
Encrypting video and image streams using OpenCL code on- demand
Authors: D’Amato Juan P. , Vénere Marcelo J.
Published: December 2018

The amount of multimedia information transmitted through the web is very high and increasing. Generally, this kind of data is not correctly protected, since users do not appreciate the amount of information that images and videos may contain. In this work, we present architecture for managing safely multimedia transmission channels. The idea is to encrypt or encode images and videos in an efficient and dynamic way. At the same time, these media could be enhanced applying a real-time image process. The main novelty of the proposal is the application of on-demand parallel code written in OpenCL. The algorithms and data structure are known by the parties only at communication time, what we suppose increases the robustness against possible attacks. We conducted a complete description of the proposal and several performance tests with different known algorithms.