bluuebunny/crossref_metadata_2025 huggingface dataset:
Formation features of composite electrochemical nickel and nanostructured zirconium boride coatings
Authors: Degtyar L. A. , Ivanina I. S. , Zhukova I. Yu.
Published: April 2019

Introduction.The electrodeposition of composite electrochemical coatings from electrolyte-colloid nickel plating containing ultradisperse zirconium boride powder is studied. The work objectives are as follows: to study mechanical-and-physical properties of the composites based on nickel and nanostructured zirconium boride, and to determine optimal conditions for the application of such electrochemical coatings.

Materials and Methods.Microhardness of composite electrochemical coatings was measured using PMT-3 microhardness tester on samples with the layer thickness of 30 μm under the indentation load of 100 g. A three-ball machine was used to determine wear resistance of the coatings. Sample tests were carried out under dry friction modes and with the use of 3% RV coolant. WSD values were measured by MIR-3 TU 3-3.1954-86 microscope. To determine the internal stresses in the coating, we used a flexible cathode method up to GOST 9.302-88.

Research Results.The electrolyte-colloid composition and modes of electrodeposition of composite nickel - nanostructured zirconium boride coatings are developed. Mechanicaland-physical properties (microhardness, wear resistance and internal stresses) of the obtained composite electrochemical coatings are analyzed. Recommendations for use of the developed electrolyte and the application of a composite coating on machine parts for their surface hardening are formulated.

Discussion and Conclusions. Ni–ZrB2 CEC (composite electrochemical coating) has high microhardness (10–11 hPa at the indentation load of 100 g), which exceeds the microhardness of pure nickel by 1.5–2 times. As the microhardness increases, the internal stresses ofNi–ZrB2 CEC decrease. The proposed coatings were compared to chromium ones deposited from the environmentally hazardous electrolytes. The wear resistance ofNi–ZrB2 CEC is 2–5 times higher than that of chromium coatings. Thus, instead of chromic coatings, it is recommended to use the proposed composition for surface hardening of parts of the specialty machinery and industrial equipment
On efficiency of methods and algorithms for solving optimization problems considering objective function specifics
Authors: Ostroukh E. N. , Chernyshev Yu. O. , Evich L. N. , Panasenko P. A.
Published: April 2019

Introduction.The estimation of efficiency of methods and algorithms for solving optimization problems with a vector criterion and a set of nonlinear constraints is considered. The approach that allows proceeding to an optimization problem with a single objective function (i.e., an unconditional optimization problem) after equivalent transformations is described. However, the objective function obtained in this way has properties (nonlinearity, multimodality, ravine, high dimension) that do not allow classical methods to be used to solve it. The presented work objective is to develop hybrid methods, based on combinations of the algorithms inspired by wildlife with other approaches (gravitational and gradient) for the solution to this problem.

Materials and Methods.New methods to solve the specified problem are developed. A computer experiment was conducted on a number of test functions; its analysis was performed, showing the efficiency of various combinations on various functions.

Research Results.The efficiency of hybrid algorithms that combine the following approaches is evaluated: genetic and immune; methods of swarm intelligence and genetic and immune; immune and swarm with gravity and gradient.

Discussion and Conclusions.The hybrid algorithms in optimization problems are studied. In particular, decisions can be made on their basis under the management of compound objects in the military and industrial sectors, in the creation of innovative projects related to the digital economy. It is established that the type of the objective function affects the result much more than the combination of algorithms.
Propuesta de una metodología para seleccionar una comunidad donde implementar proyectos de Telemedicina en Perú.
Authors: Silva Chávez Jeysson Hérnan
Published: April 2019

INTRODUCCIÓN: La telemedicina permite aproximar los servicios de salud a las poblaciones vulnerables y ubicadas en áreas geográficas alejadas mediante la teleprevención, telediagnóstico y telemonitoreo de patologías de las diversas especialidades médicas. También sirve como medio de apoyo a los profesionales de la salud recién egresados mediante el intercambio de información y teleconsulta con especialistas. En Latinoamérica y a nivel del Perú se vienen desarrollando proyectos aplicativos sobre telemedicina; en los cuales la comunidad beneficiada fue seleccionada por conveniencia o sin especificar un modelo de selección replicable en siguientes proyectos. En este sentido, se propone un modelo de selección de una comunidad en el Perú, donde se pueda realizar un proyecto de telemedicina adecuado a sus necesidades sanitarias.  METODOS: Para la selección del departamento se consideró el índice de pobreza departamental; la selección de la provincia fue en base al promedio de los “SCORE de necesidad distrital”. El SCORE de necesidad distrital está conformado por el índice de vulnerabilidad distrital, índice de pobreza distrital y el número de puestos de salud en el distrito. RESULTADOS: El departamento de Amazonas cuenta con registros actualizados de su sistema de salud y tiene uno de los mayores índices de pobreza en el Perú. La provincia de Condorcanqui en el departamento de Amazonas presentó el mayor promedio de SCORE distrital. CONCLUSIONES: Condorcanqui constituiría un ambiente donde se podrían aplicar proyectos de la telemedicina que mejoren de una manera costo-efectiva la salud de su población. Este modelo de selección podría aplicarse a más departamentos del Perú, siendo necesario contar con datos actualizados del sistema de salud de cada departamento.
DESPISTAJE DE DESNUTRICIÓN CALÓRICO PROTEICA EN LOS NIÑOS DE LA TRIBU AÑÚ, DE LA ISLA MARACA ESTADO ZULIA VENEZUELA.
Authors: Rondon Artriz Nohemy , Madriz de Byrne Mary Carolina , Escalante Perez Pedro De Jesús , Ramírez Guerrero Eduardo José
Published: April 2019

Objetivo: Determinar la prevalencia de desnutrición calórico proteica, aguda y crónica en los niños de la tribu Añú, en la isla Maraca, estado Zulia Venezuela. Materiales y métodos: se realizó un estudio observacional, descriptivo, transversal y de campo en la comunidad Añú de la isla maraca, municipio Almirante Padilla del estado Zulia, constituida por una población de 300 niños. Se tomó una muestra, no probabilística de 85 niños correspondiente al 28,33% de la población. Se procedió a pesar, tallar y calcular el IMC a cada niño, buscando los percentiles correspondientes a peso/edad y talla/edad en las tablas de referencia de la Organización Mundial de la Salud y calcular la desnutrición aguda y crónica correspondiente según edad y sexo. Resultados: se evidenció desnutrición aguda en el 7% de la población, siendo más prevalente el déficit de peso en el sexo masculino (11%), mientras que la desnutrición crónica se presentó en el 19% de la población, siendo mayor el déficit de talla en el sexo femenino (26%). Conclusiones: la población infantil de la tribu Añu de la isla Maraca del estado Zulia presenta 11% de desnutrición aguda y 19% de desnutrición crónica.
Características y proporción de publicación de tesis en una escuela de medicina de Costa Rica, 2002-2015
Authors: Retana-González Andrea , Soto-Jimenez Tatiana , González Fiorella , Arguedas-Serrano Arturo F , Salazar-Brenes Carlos
Published: April 2019

Objetivo:evaluar las características y la proporción de publicación de las tesis en revistas indexadas biomédicas realizadas por estudiantes de medicina en una escuela de medicina de Costa Rica.

Métodos:los datos de las tesis de grado en medicina registradas entre 2002 y 2015 se obtuvieron de la biblioteca CENIT de la Universidad Hispanoamericana. La publicación de tesis en revistas biomédicas se evaluó en el 2018 mediante una estrategia de búsqueda utilizando Google Scholar.

Resultados:455 tesis médicas se registraron entre 2002 y 2015, se excluyeron 34 tesis por datos repetidos e incompletos. En la autoría de las tesis predominó el sexo femenino (59,4%), investigaciones clínicas (65,7%), con diseños de estudio y métodos bioestadísticos descriptivos, 92,1% y 99,5%, respectivamente. Además, 9 (2%) tesis fueron publicadas en revistas biomédicas indexadas. De las tesis publicadas, 2 (22,2%) se publicaron en revistas indexadas en SciELO y LILACS, 2 (22,2%) en revistas indexadas en IMBIOMED y 5 (55,6%) en revistas indexadas en BINASSS. La totalidad de las tesis publicadas (100%) estaban en español y 88,9% publicadas en revistas costarricenses. Además, 6 (66,7%) pertenecen principalmente a la medicina interna.

Conclusión:en este estudio, la totalidad de las tesis publicadas fueron en español, publicadas en revistas locales e indexadas en BINASSS. El porcentaje de tesis publicadas en revistas biomédicas en esta universidad es muy bajo en comparación con otras provenientes de países desarrollados.
DEPRESIÓN Y ANSIEDAD EN ESTUDIANTES DE MEDICINA DE LA UNIVERSIDAD DE CARABOBO SEDE VALENCIA, 2018
Authors: Martinez Colarossi Gianfranco Jose , Lugo López Libethmar Josebeth
Published: April 2019

RESUMEN

Objetivo: establecer la prevalencia de posible depresión y ansiedad en estudiantes de Medicina de la Universidad de Carabobo, mayo 2018. Metodología: Se realizó un estudio descriptivo, de tipo transversal con una muestra probabilística aplicando la Escala de Ansiedad y Depresión de Goldberg (E.A.D.G), la cual posee dos subescalas compuesta por 9 ítems cada una, a través de una encuesta de carácter anónimo y voluntaria a estudiantes del 5to año de medicina del Departamento Clínico Integral del Sur de la Universidad de Carabobo, sede Valencia. Resultados: Se encuestaron a 63 estudiantes del quinto año de medicina, de los cuales 39 (61,9%) eran mujeres y 24 (39,1%) eran hombres, con una edad promedio de 22.9 años. La EADG arrojó que 57,14% de los estudiantes son compatibles con Depresión, el 22,22% con Ansiedad y el 19,05% de la muestra presentan posible depresión y ansiedad. En relación al sexo, el género femenino obtuvo el mayor porcentaje de depresión (66,67%), de ansiedad (28,20%) y de compatibilidad simultánea de depresión y ansiedad (23,07%). El grupo etario mayor afectado fue el rango entre los 20 y 24 años, con un 23.21 % de ansiedad y 57,14% de depresión. Conclusión: La prevalencia de depresión y ansiedad en estudiantes de medicina tiende a ser alta por diversos factores, por lo que se debe de fomentar medidas preventivas para evitar las posibles complicaciones que ésto podría acarrear en los futuros galenos.

Palabras Claves: Prevalencia, Depresión, Ansiedad, Estudiantes de Medicina.
El Uso de fuentes y tecnologías de la información y comunicación según el tipo de universidad en siete países de América Latina
Authors: Valladares Garrido Mario Josue
Published: April 2019

Objetivo: Identificar el uso de fuentes y tecnologías de la información y comunicación según el tipo de universidad en siete países de América Latina. Métodos: Estudio transversal analítico, en estudiantes de medicina de siete países de América Latina. Se midió el uso de fuentes y tecnologías de información y comunicación con el autoreporte sobre el uso de buscadores científicos (SciELO, PubMed, Google Scholar) y TIC (laptop, smarphone, wifi). Las variables secundarias fueron el país y el tipo de universidad de procedencia (pública/privada) de los estudiantes de medicina. Se reportó valores p menores de 0,05 como estadísticamente significativos. Resultados: De 4463 encuestados, SciELO fue usado por el 83,3% y el 55,0% en una universidad pública y privada, respectivamente. Mientras que PubMed fue reportado por el 79,9% y 59,2% de estudiantes de universidad pública y privada, respectivamente. Las universidades privadas tuvieron mayor uso de TIC en Panamá y Bolivia, en contraste con aquellas de tipo públicas fueron Paraguay, México, Colombia y Argentina. La mayoría de los estudiantes usaban smartphone en más del 60%. Conclusión: El smartphone fue utilizado por la mayoría de los estudiantes. El uso de Internet fue mayor en estudiantes de universidades privadas. No se encontraron grandes porcentajes del uso de PubMed y SciELO en universidades públicas y privadas. Se deben reforzar las estrategias educativas en el campo de la educación médica, debido a pobre cultura de manejo de información basada en evidencias.
Promoting mobile collaborative language learning in Islamic higher education
Authors: Yudhiantara Rully Agung , Nuryantini Ade Yeti
Published: April 2019

This study sought to explore students’ experience in using Instagram to participate in mobile collaborative language learning (MCLL). The contents they produced and shared, as well as their interaction and collaboration, were analyzed. The participants of this study were 110 students in an English education department, in three different classes,who all had taken a translation coursetheir third semester. Online tasks were assigned to students and they were required to produce, share, interact and collaborate to accomplish tasks. This study applied a qualitative method with case study research design using observation, focus group discussion and content analysis. Data were analyzed through stages namely categorization, reduction and interpretation. Results showed that the students were able to participate in MCLL using Instagram. They produced and shared contents that met the requirement of MCLL. The contents included English sentences for structural collaboration in terms of subject-verb agreement and English sentences for word meaning collaborations. They interacted with their peers by writing feedback and comments on the uploaded content. They collaborated with their peers by providing multiple interactions to accomplish tasks in MCLL like writing structural analysis, word meaning, paraphrasing sentences, and sentence translation.
Atenção básica de saúde: um estudo de caso na comunidade Novo Israel em Manaus
Authors: Costa Andreza Marques da
Published: April 2019

RESUMOO Sistema Único de Saúde (SUS), um dos maiores sistemas públicos de saúde do mundo, foi instituído pela Constituição Federal de 1988 que, em seu artigo 196, coloca: “a saúde é direito de todos e dever do Estado”. Assim, este artigo objetivou avaliar a percepção dos moradores do Bairro Novo Israel em relação ao atendimento primário oferecido à comunidade na UBS Frei Valério Di Carlo. Para tanto, foi realizada uma pesquisa de natureza aplicada, com base em modelo quantitativo, sendo posta em prática uma pesquisa de campo que foi operacionalizada por meio da aplicação de um questionário e teve como amostra 100 usuários de uma unidade básica de saúde localizada na Zona Norte da cidade de Manaus. Os resultados da pesquisa indicam uma insatisfação dos usuários em relação ao tempo de espera para o atendimento. No entanto, estão satisfeitos com os serviços oferecidos pela Unidade.Palavras-chave: Sistema Único de Saúde, Avaliação, Satisfação dos Usuários. ABSTRACTThe Unified Health System (SUS), one of the largest public health systems in the world, was established by the Federal Constitution of 1988, which states in its article 196: "health is the right of everyone and the duty of the State." Thus, this article aimed to evaluate the perception of the residents of Bairro Novo Israel in relation to the primary care offered to the community at UBS Frei Valério Di Carlo. For that, a research of an applied nature was carried out, based on a quantitative model, being carried out a field research that was operationalized through the application of a questionnaire and had as sample 100 users of a Basic Health Unit located in the zone north of the city of Manaus. The results of the survey indicate a dissatisfaction among users regarding the waiting time for care. However, they are satisfied with the services offered by the Unit.Keywords: Unified Health System, Evaluation, User Satisfaction.
Project Evaluation Review Technique Model to Dredging Operations in Niger Delta
Authors: Nkoi Barinyima , Wordu Animia Ajor , Worgu Fortune
Published: April 2019

This research applies Project Evaluation and Review Technique (PERT) model to estimate acceptable duration for execution of each activity having random variable of time and some probability distribution for sand dredging operation in Niger Delta. The study takes into account proper planning, scheduling, controlling and allotment of dredging activities time using a project network model PERT. The model evaluated how acceptable time and saving cost could be achieved in a scenario of activities having random time variables. Readily available data of activities time from 2014 – 2017 were used to analyze the time estimate for various activities at a selected dredge site Aleto-Eleme in Port Harcourt metropolis Rivers State-Nigeria. The PERT was applied for the data analysis, to construct the PERT scheme for the dredging operations. Finally, parametric control for project evaluation and review techniques of acceptable time for the dredging activities were determined.
The Profile of Physico-Chemical Properties of Spilled Crude Oil in Marine Sediments in Niger Delta
Authors: Wordu Animia Ajor , Mmecha C. A. , Puyate Y. T. , Akpa J. G.
Published: April 2019

This paper presents profile of the physico-chemical properties of study areas of the research. Most frequently, in the Niger Delta zone spilled oil in the marine sediments is prevalent. The research paper therefore focused at first instance to evolve the parametric control properties which have direct interactions with the spilled oil. Samples sediments A, B, C, and D were collected from the designated study areas of Southern Ijaw, Ekeremor, Ogbia, Brass and Nembe local government areas hosting the major oil producing companies along the coastal regions of Niger Delta-Nigeria. The samples were subjected to instrumental analysis for determination of pH 5.2 (acidic); electrical conductivity 169 µS/cm; redox potential -134 mv; temperature 25.7 centigrade; bulk density 3.3; particle density 2.75; porosity 41.6; organic matter 8.60; clay 28.70; silt 56.80;  sand 14.5; total hydrocarbon content 83.33; and the metallic components of the samples (mg/kg) stood as follows- Zinc (Zn) 1.47; Lead (Pb) 0.070; copper (Cu) 2.06; cadmium (0.51); Nickel (Ni) 0.82; manganese (Mn) 4.75; iron (Fe) 7.60; and chromium (Cr) 0.98. Table II showed sample Sediment A gave appreciable values on all the parameters for good judgment on the rest samples Sediment B, Sediment C and Sediment D results. The possible reasons being there are much physico-chemical interactions down the samples which bring concomitant effects on animals, fishes, humans’ health and regions degradation tendencies and perennial consequences of social agitations for remediation and compensations.
A Dynamic Model of Induction Machine
Authors: Motto Frederic Biya , Tchuidjan Roger , Ndzana Benoît , Tchinda Colince Tatsa
Published: April 2019

In this paper, we study the construction, the equations and parameters of induction electrical machines, and also particularities of dynamic properties.
EDCH: A Novel Clustering Algorithm for Wireless Sensor Networks
Authors: Pyage Raj Kumar , Chandrakanth H. G.
Published: April 2019

In wireless sensor networks, sensor nodes play the most important role. These sensor nodes are mainly un-chargeable, so it an issue regarding lifetime of the network.  The main objective of this research is concerning clustering algorithms to minimize the energy utilization of each sensor node, and maximize the sensor network lifetime of WSNs. In this paper, we propose a novel clustering algorithm for wireless sensor networks (WSN) that decrease the networks energy consumption and significantly prolongs its lifetime. Here main role play distribution of CHs ( Cluster Heads) across the network. Our simulation result shows considerable decrease in network energy utilization and therefore increase the network lifetime.
Design of an Automatic Irrigation System
Authors: Nwazor Nkolika O. , Odiushovwi Peter E. , Onalaja Lukman
Published: April 2019

Over the years, a lot of irrigation systems have been developed to aid crop farming but most of them are manually operated. The few automatic irrigation systems available in the country are very expensive and therefore not easily available to the peasant farmers. The need for improved non-seasonal crop farming gave rise to this research work on a low cost irrigation system made from locally sourced components. The system designed in this work makes use of a locally made soil humidity sensor to check the water level in the soil. If the water level is below the required level, the irrigation system is turned on by sending a signal to the relay connected to the pump which opens the valve to let water out.  Once the required humidity is obtained, it is turned off through a similar mechanism. The control also has six buttons for time-based control of irrigation for crops that demand irrigation at specific times of the day. With a system like this, non-seasonal farming is ensured thus increasing food supply and reducing hunger.
Uso de CAD para un sistema de identificación de molienda de Cobre
Authors: Benavides Maldonado José Leonardo , Ochoa Edgar , Castillo Hernan , Riofrio Gonzalo , Tocto Jorge
Published: April 2019

Ecuador actualmente propone una matriz productiva basada no solo en la extracción de petróleo sino también en la explotación de algunos minerales. Como la minería del cobre, un sector con muchas necesidades por resolver, uno de ellos es el control de peso a la salida del mismo. Por tal motivo, en la Universidad Nacional de Loja se construyó un prototipo a escala de laboratorio de trituración de cobre, se identificó el modelo matemático del mismo, mediante el empleo de dos metodologías para la identificación, una basada en CADCS (Computer Aided diseñado y sistemas de control) y el otro en Ident (sistema de identificación) que posee el software MATLAB®, para optimizar este proceso. A continuación, se presentaron cuatro algoritmos que permitieron controlar en una simulación el proceso de trituración y que son: PID, Smith Predictor y luego los resultados del parámetro más relevante se presentaron en una tabla. Finalmente, el mejor algoritmo de control seleccionado fue implementado con la ayuda de Arduino.
DER KOMMUNISTISCHE WIDERSTAND IN RUMÄNIEN: EIN EINBLICK IN DIE GEDÄCHTNISPOLITISCHE AUSEINANDERSETZUNG
Authors: GYÖNGY Antonela
Published: April 2019

The Communist Resistance in Romania: Considerations on the Politics of Memory. The present paper discusses the communist resistance in Romania from the perspective of memory politics. During the communist period, this topos was clearly shaped by memory politics and therefore directly related to the domestic and foreign policy turning points. By addressing the formation context of the Communist Party in Romania as well as the subsequent political and scientific discourses, the question is raised: why this topos has stuck to the rigid narratives during and after communism.
POLITICAL EVOLUTION AND INVOLUTION IN HUNGARY AFTER THE ACCESSION IN THE EUROPEAN UNION
Authors: VAIDA Ovidiu
Published: April 2019

After the fall of communism, Hungary was one of the leading country in Central and Eastern Europe to pursue democracy and market economy. In short time, it was praised for its achievement in those areas, and soon Hungary was invited to join NATO, and starting with 2004, the EU. Yet, after 2010, some transformation took place in the political arena, and as a result, the quality of democracy started to decrease and in just few years, Hungary was the main example for illiberal democracy in this area. The current text aims to analyse the changes that occurred in Hungary, to what extent democracy is jeopardised and what are the explanations for the illiberal turn.
Periodismo, negocios y política durante el tercer peronismo: la revista Panorama (1973-1975)
Authors: Orbe Patricia Alejandra , Napal María Celeste
Published: April 2019

El estudio de la prensa durante el tercer gobierno peronista es un campo que merece ser investigado con mayor profundidad. Con el objetivo de realizar un aporte en este sentido, nos proponemos analizar el discurso periodístico de la revista Panorama, editada por la Editorial Abril. Para ello nos centraremos en las representaciones que esta publicación de actualidad producía en relación al peronismo y sus principales representantes, al tiempo que su empresa editora atravesaba una grave crisis por efecto de las presiones políticas y económicas que recibía desde sectores ligados al oficialismo, circunstancia que conduciría al cierre de la revista y al ocaso de su trayectoria institucional.
Femicidios: modos de visibilización en la agenda mediática salteña durante 2015
Authors: Zurita Inés Patricia
Published: April 2019

Este trabajo aborda las maneras mediante las cuales los femicidios ocurridos en la provincia de Salta durante 2015 ingresaron a la agenda mediática local, en el marco de la irrupción de “Ni Una Menos”, la movilización que marcó un hito en la Argentina, con un fuerte protagonismo de los movimientos de mujeres y feministas, y la promulgación del Decreto 7896 de Emergencia por Violencia de Género en dicha provincia, la cual encabeza las tasas más altas de femicidios y violaciones del país.

El análisis de la construcción de la agenda-setting se realiza en cuatro medios gráficos: La Gaceta Salta, El intransigente, Nuevo Diario y El Tribuno de Salta. El mismo considera la jerarquización asignada a los hechos de femicidios en el orden del día y, asimismo, la ubicación e interacción de estas noticias dentro de determinadas secciones de los diarios y el seguimiento de los casos a lo largo del tiempo. Estos aspectos dialogan con otros elementos fundamentales en la constitución de la producción de sentido sobre la violencia contra las mujeres: las condiciones de producción de la información, el contexto nacional atravesado por ciertos cambios jurídicos, políticos y sociales; y las particularidades de cada empresa periodística.
A sintaxe de Apolonio Discolo
Authors: Neves Maria Helena de Moura
Published: April 2019

Apolônio Díscolo tem um papel importante na história das ideias gramaticais, especialmente no campo da sintaxe. Com intenção declarada de empreender uma obra de sistematização completa dos fatos gramaticais da língua grega, Apolônio inaugura a análise das funções, centrando-se na propriedade de dos significados· que a oração completa tem. Defendendo o princípio do paralelismo, Apolônio Díscolo parte da oração como domínio da sintaxe, mas considera, afinal, que a sintaxe abarca todos os níveis, pois constitui o conjunto de regras que regem a síntese dos elementos, em todos os estratos. Assim, a obra de Apolônio Díscolo, mesmo investigando fatos particulares de uma língua, nunca perde de vista o sistema, e busca, em última análise, a depreensão de princípios gerais.
O fragmento 2w de Arquíloco
Authors: Corrêa Paula da Cunha
Published: April 2019

A interpretação tradicional do Fr. 2w de Arquíloco começou a ser questionada após T. Hudson-Williams ter discutido a construção “incomum”· da última oração, e uma questão de estilo ter sido levantada por C. M. Bowra. Qual seria o significado de ἐν δορί? O seu emprego serie idêntico nas suas três ocorrências, ou não? Examinando tais problemas e as soluções propostas, sugerimos uma nova possibilidade de leitura.
Eurípedes: os ciclopes e a natureza
Authors: Candido Maria Regina
Published: April 2019

A Sicília despertava o interesse de outras civilizações como a cartaginense e a grega devido à riqueza da região. Entretanto, o acesso a esta riqueza era impedido pelos nativos que repeliam violentamente o assédio à região. No imaginário grego, a reação dos nativos assemelhava-se às atividades do seu vulcão Etna, que se manifestava sem controle, inóspito e selvagem. Configurando uma reação de total subordinação às leis da natureza e uma ação de alteridade do mundo de normas do grego civilizado. Assim, os Ciclopes apresentam ao ateniense o outro-diferente e ao mesmo tempo evidencia a relação entre Atenas como centro civilizado e a Sicília como região periférica do mundo civilizado, espaço do outro-diferente em estado de barbárie.
La muerte incomprensible de Patroclo (II 684 in Finem)
Authors: Saraví Silvia Ester
Published: April 2019

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O Judeu-Helenismo e as origens do Cristianismo
Authors: Gomes Laura Graziela F. F.
Published: April 2019

Este trabalho tem como objetivo apresentar algumas considerações gerais sobre o contexto inaugural do Cristianismo com vistas a relativizar as abordagens sociológicas que interpretam a ocorrência do Messianismo nas sociedades modernas e contemporâneas como algo “deslocado”, sintoma de arcaísmo e de irracionalidade. Pretenderemos demonstrar que tais abordagens geralmente ignoram o fato de que, desde o início, este sistema religioso está fundado numa tensão – esta podendo ser reduzida à oposição Fé X Razão – em virtude do lugar e do papel desempenhado pela civilização helenística e pelo Judaísmo em sua constituição.
Corpo e narrativa na clássica
Authors: Mollo Helena Miranda
Published: April 2019

Este artigo tem como objetivo estudar a relação entre a Medicina e a História no V. século grego. Esta relação é estudada em duas narrativas: no Tratado sobre a Natureza do Homem e na História da Guerra do Peloponeso. Nestas narrativas nós estudamos as ligações entre alguns conceitos como a doença no corpo humano e a guerra.
As dimensões sociais dos costumes funerários entre os micênios: os círculos tumulares A e B de Micenas
Authors: Torralvo Ana Claudia
Published: April 2019

O Linear B é a escrita micênica e comprovadamante a forma mais antiga conhecida de registro da língua grega. Contudo, é representada apenas por arquivos palacias, registros burocráticos de transações comerciais. Muito pouco é conhecido da sociedade que construiu as poderosas muralhas de Micenas e Tirinto (Argólida) e o grande palácio de Pilos (Messênia). Este artigo trata do período de formação dessa sociedade já que os Círculos Tumulares de Micenas são praticamente os únicos vestígios desse período. Analisando as estruturas fimerárias e seu mobiliário nos é possível detectar pistas que nos ajudam a formular novas hipóteses. Estas novas hipóteses, por sua vez são vistas através de um prisma arqueológico e antropológico que nos revelam aspectos muito mais concretos de uma civilização conhecida somente através de seus restos materiais.
¿Por qué no el paradigma teísta? Un diálogo con La mente y el cosmos de Thomas Nagel
Authors: Rodríguez Valls Francisco
Published: April 2019

En La mente y el cosmos, Thomas Nagel critica los paradigmas reduccionistas en ciencia natural y considera la posibilidad del teísmo aunque acaba rechazándolo. Este trabajo analiza los argumentos de Nagel para tal rechazo y establece la legitimidad de sostener tal paradigma.
¿Es el cosmos realmente un objeto?
Authors: Velázquez Fernández Héctor
Published: April 2019

Entender al universo como una sustancia entendida como objeto, provisto de unidad, determinación e independencia, como base para argumentar la necesidad de una causa eficiente externa, y la compatibilidad de la teología natural con la cosmología contemporánea, no es una propuesta exenta de problemas. En este trabajo se sugiere que la idea aristotélica de sustancia no corresponde del todo a la noción de objeto, y que en todo caso, una fundamentación de la teología natural con base en la cosmología contemporánea sería más factible si se entendiera al universo como una unidad de orden, más que como un objeto.
De ajustes finos, tapones cognitivos y diferencias ontológicas
Authors: Arana Juan
Published: April 2019

La legitimidad de la teología natural, un género filosófico de raigambre milenaria, ha sido impugnada a partir del siglo XVIII tanto por científicos de sesgo naturalista como por filósofos amantes de la metafísica especulativa. Dos ejemplos contemporáneos de estas actitudes los representan Martín López Corredoira y Javier Hernández Pacheco. En este artículo se examina y evalúa la validez de sus críticas.
Immunological and pathological investigations of non-specific reactive hepatitis in shelter dogs
Authors: Jaber Jose Raduan , Velázquez-Wallraf Alicia S , Farray David , Ravelo-García Antonio G. , Carrascosa Conrado , Rodríguez-Ventura Myriam , Perez Jose
Published: April 2019

The aim of this study was to describe the gross, histopathological and immunohistochemical features of non-specific reactive hepatitis (NSRH) in stray dogs. To perform this study the livers of 23 dogs of different breed and sex were used. The tissue sections were stained with hematoxylin–eosin, and immunohistochemically. The results of this work showed that NSRH was characterized by the infiltration of lymphocytes and plasma cells scattered throughout the liver parenchyma and in the portal stroma, and associated with inflammatory and non-inflammatory diseases in other organ systems. The inflammatory infiltrate of NSRH was composed of CD3+ T lymphocytes and HLA-DR+ lymphocytes, as well as IgG+ plasma cells and alpha-1-antitrypsin+ macrophages in the portal spaces and hepatic sinusoids.
Psychological Contract, Internal Branding and Employee Turnover in an IT Company
Authors: Oliveira Abílio , Moro Sérgio , Torres Pedro
Published: April 2019

We are living in a time of huge competitiveness, where many institutions fight hard for their survival. Unemployment, exclusion, xenophobia, poverty and disrespect towards nature and our peers are causing unbearable impact to humanity. This situation is challenging us to retrieve and keep alive the true values, without any distinction of cultures, religions and ways of thinking. Only this way we can contribute to a fairer, inclusive and better society. A corporation can contribute to the employees' well-being, personal and professional fulfillment. The present study is focused in the employee turnover and how it is affected by the internal branding and the psychological contract, in a company of informatic services – in which we mainly considered its organization and human resources. So, we aimed to contribute to the understanding of: internal branding and psychological contract, and their interrelation; effects of internal branding and psychological contract in employees; the turnover (common in this company of informatics services). A questionnaire was developed to measure the internal branding and employees' psychological contract. We used several statistical techniques to analyze the data, namely, descriptive statistics analysis, factorial analysis in principal components, comparison of means and correlations among the resulting dimensions. Findings reveal low values for the internal branding and psychological contract, although, men feel slightly more satisfied with their situation than women. A positive association was found between the internal branding and the psychological contract, admitted as a possible cause of turnover. Anyway, results denote an insufficient concern of the company towards its human resources.
Societal Conflict Defies Peace Diplomacy: Evidence from the Palestinian-Israeli Conflict
Authors: Alghafli Ali
Published: April 2019

This paper synthesizes interrelated postulations from the systemic conflict and intergroup conflict theorizations to glean the societal conflict conceptual framework. The paper employs this conceptual framework to appraise the validity of the societal characterization of the Palestinian-Israeli conflict during the peace diplomacy era. Accordingly, the analysis uses the ‘structured, focused comparison’ qualitative method to investigate attitudinal and behavioral aspects of five cases of intercommunal violence within the Palestinian-Israeli context. The observed cumulative evidence indicates that the unresolved conflict has been exhibiting the conceptual properties of societal conflict throughout more than 25 years since the introduction of the Middle East peace process in 1991. Overall, the study explores the social, psychological, and political aspects of the Palestinian-Israeli conflict, accentuates the societal underpinnings of intercommunal violence, and provides basis for perceiving the limited success of peace diplomacy.
Absolute stability of a class of fractional positive nonlinear systems
Authors: Kaczorek Tadeusz
Published: April 2019

The positivity and absolute stability of a class of fractional nonlinear continuous-time and discrete-time systems are addressed. Necessary and sufficient conditions for the positivity of this class of nonlinear systems are established. Sufficient conditions for the absolute stability of this class of fractional positive nonlinear systems are also given.
Machine learning techniques combined with dose profiles indicate radiation response biomarkers
Authors: Papiez Anna , Badie Christophe , Polanska Joanna
Published: April 2019

The focus of this research is to combine statistical and machine learning tools in application to a high-throughput biological data set on ionizing radiation response. The analyzed data consist of two gene expression sets obtained in studies of radiosensitive and radioresistant breast cancer patients undergoing radiotherapy. The data sets were similar in principle; however, the treatment dose differed. It is shown that introducing mathematical adjustments in data preprocessing, differentiation and trend testing, and classification, coupled with current biological knowledge, allows efficient data analysis and obtaining accurate results. The tools used to customize the analysis workflow were batch effect filtration with empirical Bayes models, identifying gene trends through the Jonckheere–Terpstra test and linear interpolation adjustment according to specific gene profiles for multiple random validation. The application of non-standard techniques enabled successful sample classification at the rate of 93.5% and the identification of potential biomarkers of radiation response in breast cancer, which were confirmed with an independent Monte Carlo feature selection approach and by literature references. This study shows that using customized analysis workflows is a necessary step towards novel discoveries in complex fields such as personalized individual therapy.
A novel mutation in a newborn baby leading to glycogen storage disease type Ia
Authors: Dorum S , Gorukmez O
Published: April 2019

Glycogen storage disease type Ia (GSD1A) is caused by mutations in the G6PC gene. The G6PC gene was first cloned in 1993. Since then, many different mutations have been identified leading to this disease. Hepatomegaly is one of the important clinical manifestations of the disease. A 23-day-old girl was admitted to the hospital due to respiratory distress. Her physical examination was normal except for tachypnea. She had hypoglycemia, lactic academia, hyperlipidemia and hyperuricemia. With these clinical findings, GSD1A was considered in the patient and the diagnosis was genetically confirmed. By direct sequencing of the G6PC gene, we identified a novel homozygous variation (c.137T>G/p.Leu46Arg) in the patient and the healthy mother and father were heterozygotes for the variant. Here we present a case with a novel homozygous missense mutation c.137T>G/p.Leu46Arg in the G6PC gene leading to GSD1A clinical findings except early hepatomegaly. These findings expand the spectrum of causative mutations, and clinical findings in GSD1A.
Next generation sequencing identified a novel multi exon deletion of the NF1 gene in a Chinese pedigree with neurofibromatosis type 1
Authors: Yang J , An J-X , Liu X-L , Wang Z-Q , Xie G-M , Yang X-L , Xu S-J , Feng F , Ni Y
Published: April 2019

Neurofibromatosis type 1 (NF1) is a genetic disease involving neurocutaneous abnormalities. Neurofibromatosis type 1 is an autosomal dominant disorder characterized by the neurofibromas and café-au-lait spots. Mutation in the NF 1 gene causes NF1. The NF 1 gene encodes neurofibromin. In this study, we found a 31-year-old Chinese boy with NF1. He presented only with café-au-lait spots over the whole body. The proband’s mother had a severe phenotype with neurofibroma and café-au-lait macules over her whole body, mostly in the facial region. A novel multi exon deletion c.(4661+1_4662-1)_(5748+1_5749-1)del; [EX36_39DEL] on the NF 1 gene has been identified in the proband. Quantitative real-time polymerase chain reaction (qPCR) confirmed that this mutation is co-segregated well and was inherited from the proband’s mother. The mutation was absent in the proband’s father and normal individuals. The novel multi exon deletion results in the formation of a truncated NF1 protein that caused the NF1 phenotype in this family. Our present study also emphasized the significance of rapid, accurate and cost-effective screening for the patient with NF1 by next generation sequencing (NGS).
The frequency of EGFR And KRAS mutations in the Turkish population with non-small cell lung cancer and their response to erlotinib therapy
Authors: Demiray A , Yaren A , Karagenç N , Bir F , Demiray AG , Karagür ER , Tokgün O , Elmas L , Akça H
Published: April 2019

In this study, profiles of epidermal growth factor receptor (EGFR) and Kirsten ras sarcoma (KRAS) mutations and response to erlotinib therapy have been investigated in patients with non-small cell lung cancer (NSCLC). DNA from 300 patients with NSCLC was extracted from paraf-fin-embedded tissues. After the extracted DNA was sequenced by pyrosequencing method, a total of 97 (32.0%) patients out of 300 were detected to carry an EGFR mutation and 75 (25.0%) patients out of 300 carried a KRAS mutation; 20 (6.6%) patients were detected to carry both of EGFR and KRAS mutations. The EGFR mutations were found to be statistically significant in female patients (48.0 women vs. 28.0% men, non smokers (49.0 vs. 26.0%) and adenocarcinoma (37.8 vs. squamous 26.8%). The overall rate of survival in patients receiving erlotinib therapy than in patients who did not. In patients without the KRAS mutation, the median overall survival rate was 161 ± 30 weeks with erlotinib therapy and 90 ± 13 weeks in patients without erlotinib therapy. In patients having KRAS mutation, the median overall survival was 98 ± 16 weeks with erlotinib therapy and 34 ± 16 weeks with no erlotinib therapy. In our study, we once again demonstrated that the presence of these mutations affected response to erlotinib therapy. The KRAS mutations negatively affected survival rate with and without erlotinib therapy.
Investigation of circulating serum microRNA-328-3p and microRNA-3135a expression as promising novel biomarkers for autism spectrum disorder
Authors: Popov NT , Minchev DS , Naydenov MM , Minkov IN , Vachev TI
Published: April 2019

Circulating microRNAs (miRNAs) are emerging as promising diagnostic biomarkers for autism spectrum disorder (ASD), but their usefulness for detecting ASD remains unclear. Nowadays, development of promising biomarkers for ASD remains a challenge. Recently, dysregulation of the miRNAs expression in postmortem brain tissue, serum and peripheral blood, have been associated with ASD. Circulating miRNAs are known to be secreted by a number of different cells and can interpose delivery of information into receiver cells, thus affecting their functions. Based on this fact, it is supposed that serum miRNAs could be a novel class of biomarkers for prognosis or diagnosis of pathological disorders including ASD. In the current research, we investigated whether the expression patterns of circulating miRNAs showed dysregulation in subjects diagnosed with ASD. Expression levels of serum miR-328-3p and miR-3135a were analyzed by quantitative reverse transcription polymerase chain reaction (qRT-PCR) method of subjects diagnosed with ASD in comparison with healthy control subjects. Our data showed that miR-328-3p and miR-3135a were substantially down-regulated in ASD patients than in those of healthy control subjects. Moreover, target gene analysis of altered serum miRNAs displayed that these molecules targeted 162 genes denoted as unique validated targets in the miRWalk database, 71 of which appear to participate in biological pathways involved in synaptic pathways and neurodegenerative condition such as Alzheimer, Huntington and Parkinson diseases. Finally, the results strongly suggested that dys-regulated serum miRNAs might be involved in molecular pathways associated with ASD and miR-328-3p and miR-3135a have the potential to be promising novel biomarkers for ASD.
Security of Low Computing Power Devices: A Survey of Requirements, Challenges & Possible Solutions
Authors: Singh Anuj Kumar , Patro B. D. K.
Published: April 2019

Security has been a primary concern in almost all areas of computing and for the devices that are low on computing power it becomes more important. In this paper, a new class of computing device termed as Low Computing Power Device (LCPD) has been defined conceptually. The paper brings out common attributes, security requirements and security challenges of all kinds of low computing power devices in one place so that common security solutions for these can be designed and implemented rather than doing this for each individual device type. A survey of existing recent security solutions for different LCPDs hasve been presented here. This paper has also provided possible security solutions for LCPDs which include identification of countermeasures against different threats and attacks on these devices, and choosing appropriate cryptographic mechanism for implementing the countermeasures efficiently.
Adaptive Observer of Resistance in Sensorless Estimation of Speed and Position in Brushless DC Electric Motor
Authors: Slavov Danail
Published: April 2019

Estimating the speed and position using measurable electrical parameters would allow establishment of sensorless control systems for brushless DC motors, without the need to use expensive sensors for the rotor position and speed. When the motor is running, it heats up and the stator resistance rises. This heat-dependent change needs to be reflected in the observer, as it would produce an error in rated speed and position. An adaptive algorithm can compensate for the change of resistance as a disturbing effect of the motor heating. The adaptive algorithm for estimating the resistance is synthesized using the function of Lyapunov. This article is useful for estimation of brushless electric motor speed and position with observer. It contains simulations with an adaptive observer of resistance for sensorless estimation of speed and position in brushless DC motor through measurement of voltage and current.
Seismic activity on the territory of Slovakia in 2016
Authors: Kysel Róbert , Cipciar Andrej , Chovanová Zuzana , Csicsay Kristián , Fojtíková Lucia , Gális Martin , Kristeková Miriam
Published: April 2019

The National Network of Seismic Stations of Slovakia (NNSS) consists of eight short period and five broadband permanent seismic stations and a data centre located at the Earth Science Institute of the Slovak Academy of Sciences (ESI SAS). The NNSS recorded and detected 10888 seismic events from all epicentral distances in 2016. Totally 87 earthquakes originated in the territory of Slovakia in 2016. This paper provides basic information on the configuration of the NNSS, routine data processing, seismic activity on the territory of Slovakia in 2016 as well as macroseismic observations collected in 2016.