bluuebunny/crossref_metadata_2025 huggingface dataset:
Análisis de velocidad de transmisión del protocolo AX.25 Implementado en la estación terrena satelital UPTC
Authors: Vera Cely Oscar Fernando , Mesa Lara Jairo Alonso , Ferro Escobar Roberto
Published: June 2017

Uno de los parámetros importantes para el correcto funcionamiento de la estación terrena satelital proyectada para la Universidad Pedagógica y Tecnológica de Colombia (UPTC) es la eficiencia en la velocidad de transmisión con el protocolo de comunicaciones. Este artículo presenta los resultados del análisis de la velocidad de transmisión del protocolo AX.25 que se encuentra implementado en el sistema de comunicación de la estación terrena satelital UPTC. Inicialmente se hace una breve descripción del hardware adquirido para la estación; se evalúa el comportamiento de la velocidad de transmisión por medio de un análisis teórico basado en ecuaciones que permiten estimar este parámetro en el funcionamiento del protocolo, posteriormente se realizan pruebas utilizando los equipos con que cuenta la estación terrena UPTC y por último, se presentan las conclusiones. A partir de la comparación del análisis teórico con resultados obtenidos de manera experimental, se evidenció que la eficiencia del protocolo AX.25 es mayor en la medida que aumenta el número de tramas.
Metodología para la selección de atributos y condiciones operativas para la localización de fallas basada en la máquina de soporte vectorial
Authors: Arredondo Arteaga Debbie Johan , Gil González Walter Julián , Flórez Juan José Mora
Published: June 2017

Contexto: Las técnicas de localización de fallas se presentan como una alternativa ágil de restauración del servicio eléctrico en las redes de distribución de energía, debido a que los circuitos de distribución son generalmente de gran tamaño y las interrupciones del servicio son comunes. Por tanto, las empresas distribuidoras deben emplear estrategias para cumplir con su servicio oportuno y de alta calidad. Sin embargo, las técnicas de localización son poco robustas y presentan algunas limitaciones en costo computacional y en la descripción matemática de los modelos utilizados.Método: Este artículo está orientado al análisis de las condiciones adecuadas de ajuste y validación de un localizador de fallas para sistemas de distribución, basado en la máquina de soporte vectorial. Con esto es posible determinar el número mínimo de condiciones operativas que permiten alcanzar un buen desempeño con un bajo esfuerzo computacional.Resultados: La metodología propuesta se prueba en un circuito de distribución prototipo rural de Colombia a 34,5 kV, subdividido en 20 zonas, el cual, ante fallas monofásicas y diferentes condiciones de operativas, permite obtener una base de datos de 630.000 registros. Como resultado, se determina que a partir de 200 condiciones operativas adecuadamente seleccionadas, el localizador mostró un desempeño superior al 98 %.Conclusiones: Es posible mejorar el desempeño de localizadores de fallas basados en la máquina de soporte vectorial (SVM), mediante la selección adecuada de atributos y condiciones operativas, las cuales afectan directamente el rendimiento en términos de desempeño y costo computacional.
Rotational Motion Modelling for Numerical Analysis of Electric Machines
Authors: Marcsa D.
Published: June 2017

The paper presents a brief review of the movement modelling methods of electric machines and the two most common used torque calculation techniques. After the classification of single-layer moving band methods, a low computation cost and an easily realisable new variant of this movement modelling technique is proposed. To study the accuracy of proposed moving band technique equipped with Arkkio's method and Maxwell's stress tensor method for torque calculation an international benchmark problem used. Further, to check the applicability, the proposed method has been used to analyse a three-phase switched reluctance motor. The results of proposed method have been compared to analytical and numerical results.
Publikacje polskich naukowców indeksowane w Social Sciences Citation Index w latach 2009-2015
Authors: Drabek Aneta
Published: June 2017

W artykule przeanalizowano publikacje polskich naukowców indeksowane w Social Sciences Citation Index. Wzięto pod uwagę wszystkie artykuły oraz artykuły przeglądowe z lat 2009-2015 (N = 6109) opublikowane w 1799 czasopismach. Każdemu czasopismu przyporządkowany został odpowiedni kwartyl Impact Factora na podstawie danych z Journal Citation Reports. Badanie pokazało, że polscy naukowcy publikują coraz więcej artykułów w czasopismach z części A „Wykazu czasopism punktowanych” i jednocześnie coraz częściej wybierają czasopisma z I lub II kwartyla Impact Factora.
Importancia de la integración de contenidos de publicidad política en la ficción televisiva en el contexto de transición a la democracia en México / Importance of integration policy content of advertising in television fiction in the context of transition
Authors: Pareja Sánchez Norma
Published: June 2017

Este trabajo tiene como objetivo analizar la importancia de la integración de contenidos de publicidad política en la ficción televisiva en el contexto de transición a la democracia en México, misma que ha implicado modificaciones al marco jurídico que no contemplaron la regulación de espacios originalmente dedicados al entretenimiento; así como las implicaciones en términos éticos, de autorregulación y  responsabilidad social.  La regulación de contenidos político-electorales en la ficción televisiva mexicana quedó fuera de las consideraciones de las reformas políticas  de 2007-2008 y 2014, y parcialmente de la nueva Ley de Telecomunicaciones, Radiodifusión y Servicio Público (2014); dejando vacíos que vulneran el derecho a la información de las audiencias en México. En una perspectiva de género es relevante considerando que el 51.1% de las personas que ven telenovelas lo hacen a diario y que de ese porcentaje el  54.7% son mujeres.
La cultura política como objeto de estudio en Venezuela: una aproximación al estado del arte / Political culture as a subject of Venezuelan studies: an approach to state of the art
Authors: Del Valle Maria Elena , Mendieta Angélica
Published: June 2017

La Cultura Política como objeto de estudio ha ido desarrollando líneas de investigación y trabajos conjuntos en numerosas universidades venezolanas. Desde las últimas dos décadas las escuelas de Comunicación y Estudios Políticos en diversas casas de estudio han ido fortaleciendo cátedras y líneas de investigación que aluden a los principales tópicos de esta rama. El siguiente trabajo compila a través de una investigación documental las principales iniciativas y las más sólidas aportaciones en el área de los investigadores venezolanos. En él se describen las principales corrientes en las que se pueden agrupar sus esfuerzos y las más significativas conclusiones a las han llegado hasta el momento.
Comunicación política electoral en la era digital. La campaña electoral de 2015 en la ciudad de México / Electoral political communication in the digital age. The 2015 electoral campaign in México City
Authors: Percastre Mendizabal Salvador Jose , Dorantes y Aguilar Gerardo Luis
Published: June 2017

Con el arribo de la era de la sociedad de la información, se ha planteado un debate académico sobre los efectos de las TIC en la política. El presente trabajo explora una discusión sobre los elementos conceptuales y el marco analítico de la Comunicación política electoral digital en democracia, que sirve como punto de partida para después analizar el uso y la presencia en las redes sociales digitales que tuvieron los diferentes partidos políticos y coaliciones durante la campaña electoral de 2015 en la Ciudad de México y compara los resultados electorales de las principales formaciones políticas, para arribar a conclusiones sobre los resultados obtenidos en el marco de la discusión teórica planteada. Se aportan elementos básicos para el análisis sobre el contexto digital en campañas electorales y el papel de las Tecnologías de la Información y de la Comunicación, Internet, los medios digitales y específicamente las redes sociales digitales.
ДОСЛІДЖЕННЯ ПОВЕДІНКИ ФОНДОВОГО РИНКУ НА ОСНОВІ МОДЕЛЕЙ ARCH
Authors: Burtnyak I.V. , Malitska G. P.
Published: June 2017

Метою даної статті є вивчення динаміки волатильності деяких індикаторів фінансового ринку України із застосуванням методів ARCH моделювання. Як індикатори фінансового ринку ми приймаємо найбільш агреговані змінні, що характеризують прибутковість або ціну ринкового портфеля, але не окремих активів, що становлять цей портфель. Індикатором ринку акцій виступає індекс Першої Фондової Торгівельної Системи (ПФТС). Умовна дисперсія фінансових індикаторів відображає рівень системного ризику, вимірює невизначеність, пов'язану з прогнозуванням динаміки ринку.
ТЕХНІЧНІ ОСОБЛИВОСТІ ВІТРИЛЬНОГО ОЗБРОЄННЯ ЯХТ ЗА КАТЕГОРІЯМИ ТА КЛАСАМИ
Authors: Yeroshkina S.G.
Published: June 2017

Стаття спрямована на глибоке конструктивне наукове дослідження та аналіз технічних особливостей вітрильного озброєння сучасних світових яхтових човнів для проходження вітрильних регат у різних районах плавання. Дана повна класифікація вітрильних човнів за їх класами у світових, міжнародних, національних регатах. Приведені технічні показники гоночних яхт класами. Проведений економічний аналіз вибору матеріалу вітрил для яхт різноманітного типу гонок. Зроблений економічний розрахунок експлуатаційної вартості човна. Проведений аналіз вартості збереження яхти у європейських/українських маринах.
Біоморфологічні особливості м’язів, які діють на тазостегновий суглоб, у деяких представників родини лебеді – GENUS CYGNUS
Authors: Druz N.V.
Published: June 2017

The article presents the summarized results of the original system morpho-functional and morpho-ecological research of muscles of the bipedaly locomotion apparatus of birds, in particular of number Anseriformes, type swans. For the first time it is provides a detailed design of comparative anatomy of birds pelvic limbs, accompanied by unique historical overview and covers more than two-thousand-year period. It was hold the analysis of some significant morphological structures, that gives a key to the reconstruction of the adaptive evolution of any group of birds. Also it is described biomorphological features of hip joint`s muscles of the genus swans. It was found that representatives of the given number have a degree of differentiation of hip joint`s muscles, caused by walking type of bipedaly locomotion and biomorphological features of static, which in turn imposes certain imprints on the degree of development of each muscle of the hip joint. What is biomorphology as a separate line of morphology? This is the synthesis of ecology and morphology of different taxonomic groups of birds, since each type has its own ecological niche, outside which it can not exist. Nowdays scientist are interested in the current issues, concering inter-specific features of static and locomotion of various species of birds. Each single species of birds is unique by its anatomical components, arising from their adaptation to life in different environments and functional load of the body weight, what is confirmed by our study. Birds are well adapted to the different conditions of existence: to live in swamps, aquatic life in air, in forests and thickets, on plains and rocks. Modern biomorphology studies not only morphological features of the body structure, in this case of birds, but the habitat that could affect on the differences of the various organs. For example, many birds use air as a travel medium and as a medium of food production, and spend most of the day in flight. They have the most developed aircraft. Some birds use water as habitat and food production, and also have suitable adaptations, that have evolved in two directions: adaptation of wings and adaptation of legs.
Біоморфологічні особливості м’язів, діючих на плечовий суглоб, деяких представників ряду горобцеподібних – Ordо Passeriformes
Authors: Melnyk O.O. , Melnyk M.V.
Published: June 2017

Biomorphological features of muscles that act on the shoulder joint of some representatives of orderPasseriformes are represented in the article. As shoulder joint of birds has many axes, not only the muscles of the shoulder joint provide the movements in it, but some of the muscles of the shoulder girdle and elbow joint. It should be noted that the main flight muscles of birds are the shoulder girdle muscles, including the chest (m. pectoralis) and supra-coracoid muscles. Some muscles of an elbow joint, including m. coracoradialis and m. scapuli triceps, are equally important. However, the amount of muscles that somehow act on the shoulder joint of the investigated birds' species is different, the degree of muscle development in these species is also different. In order to understand the degree of development, particularly mechanisms of differentiation and development of muscle structures, a comprehensive study of the muscles of the shoulder girdle, shoulder and elbow joints was conducted. The material for the research was obtained from the funds of the Department of animal anatomy named after acad. V.G. Kasyanenko of National University of Life and Environmental Sciences of Ukraine, where the studies of muscular structures of the shoulder joint of some representatives of order Passeriformes, including raven (Corvus corax), rook (Corvus fragilegus), waxwings (Bombycilla garrulous), were conducted. Research of muscles of the shoulder joint, shoulder girdle and elbow joint of birds was performed on fresh or fixed in 10% formalin solution cadavers. After describing and defining of fixation points of the muscles, they were dissected to determine the location of the muscle fibers. In addition, in order to determine the degree of development of muscles and muscle groups, each muscle was weighed. During the research, muscles were drawn or pictured to complement the work with illustrative material. There was no larger or smaller muscle neither in muscle group of shoulder, nor elbow joint that should be significantly for each case. There is no clear stability in the development of muscle groups of these joints. At the same time, muscle group of elbow joint is more developed than the muscle group of shoulder joint. All these mentioned features of structure and differentiation of muscles, which act on the shoulder joint of birds, are caused by physical exertion, posed by adaptation to a different type, speed and duration of flight.
Морфологічні особливості деяких органів головної кишки коня
Authors: Stegney M.M.
Published: June 2017

Complex classical morphological methods of studies were used in investigation. Pneumatic saccus is placed over the dorsal side of the pharynx and aside of it. Extended basis is attached to the ventral surface of the body and alar processes of sphenoid bone. Lateral wall of the pneumatic saccus is connected with the medial stylohyoid by loose connective tissue. In front, the dorsal wall is adjacent to the alar processes of sphenoid bone. Palatine processes of incisive bone are the basis of the hard palate in front part, maxillary palatine processes – in the middle part and horizontal plates of the palatine bones in the back part. Macroscopically tonsils are clusters of lymphoid tissue limited by connective tissue capsule under the epithelium of the tongue, soft palate and pharynx. Oral cavity mucosa in the tonsils area of cattle and small ruminants forms sinuses or numerous folds, which are separated by furrows of tongue and pharyngeal tonsils in other animal species. The cluster of separate lymphoid nodules and diffuse lymphoid tissue located at the root of the tongue between secretory units of serous mucous glands form the lingual tonsils. In the pharyngeal mucosa between secretory units of mucous glands lymphoid nodules of odd pharyngeal tonsil are located. Even palatine tonsils are located caudal to the palatoglossal arch and from sides of the tongue root. In horse diffuse tonsils crypts are located on the side of the tongue. Clusters of lymphoid nodules form tonsils of pharyngeal lymphoid ring. They have crypts, which look like hollow of the epithelium into lamina propria of mucosa, surrounded by lymphoid nodules and diffuse lymphoid tissue. The epithelium of the mucous membrane is flat non-keratinized stratified, infiltrated with lymphoid cells. Lamina propria of mucosa in the tonsil area forms a connective tissue membrane, from which layers of connective tissue with blood vessels depart to the middle. Glands’ secretory units are found in the connective tissue base, glands’ excretory ducts open into the lumen of the crypts. Lymphoid tissue is the basis of parenchyma, which is formed by reticular tissue and lymphoid cells.
Вивчення показників безпечності мідій при їх технологічній обробці щодо вмісту хлорорганічних пестицидів
Authors: Fodchenko I.A. , Kasyanchuk V.V. , Vaschyk E.V. , Skrypka G.A.
Published: June 2017

In the article the problem of safety mussels content of organochlorine pesticides. We investigated these toxicants: dyhlordyfeniltryhlormetylmetan (DDT) and γ- hexachlorocyclohexane (γ-HCH - lindane) are classified as «possible» carcinogen to humans and listed on the Stockholm Convention as a persistent organic pollutants. Established that the content of DDT and γ-HCH in freshly Black Sea mussels within 0.72x10-3mh/kg, -0.64x10-3mh/kg, depending on the season. The highest content of organochlorine pesticides registered in the autumn. Established in seawater, after holding mussels one day, three days and six days (with the addition of DDT 20x10-3mh/kg) remained under 3%, 13%, 12% of the initial concentration introduced. In the water, after adding 200x10-3 mg/kg of DDT after holding mussels at the above exposure remaining 6% of the initial concentration of the pesticide introduced. This fact indicates the cumulative properties of copper relative to DDT. In sea water, with the addition of γ-HCH 20x10-3 mg/l after holding mussels one day, three days and six days left respectively 20%, 15%, 16% of the initial concentration introduced. And with the addition 200x10-3 mg/L γ-HCH, after holding mussels at the above exposure remains 13%, 20%, 20% of the initial concentration of the pesticide introduced. It also indicates that the mussels accumulate organochlorine pesticides from water. The comparative analysis of results of toxicological studies of mussels (the content of organochlorine pesticides) coastal zone of Odessa region after exposure to these types of technological processing as are boiled, freezing and pickling. Research on 4 experimental groups mussel samples found average content of DDT in meat mussel concentrations 18.48х10-3 mg/kg and 172.22х10-3 mg/kg (I, II group) after are boiled decreased by 64.6% and 63.3%; marinating process reduced the concentration of DDT in 86.3% and 82%; by freezing the level of DDT decreased by 65.3% and 63,6% and the average content in meat γ HCH concentrations in mussels 17.83х10-3 mg/kg and 165.90х10-3 mg/kg (III and IV group) after are boiled decreased by 64.6% and 71.6%; marinating process reduced the concentration of γ HCH at 92.3% and 85%; by freezing level γ HCH decreased by 65% and 65.3%. It is noted that more sensitive to technological treatment was γ-HCH and more sustainable – DDT and marinating were most effective in reducing the content of organochlorine pesticides.
Симптомокопмлекс за надгострого, гострого та підгострого перебігу пастерельозно-аскаридіозної асоціації у птиці різних видів
Authors: Plys V.M.
Published: June 2017

Results of clinical display in poultry, the mixed pasteurellosis and ascaridosis, for 2014–2015 years. Clinical symptoms depend on the physiological state of the birds, feeding and the conditions, the virulence of the pathogen pasteurellosi, the cycle of the ascarides, the intensity of lesions ascarides, temperature and humidity of the external environment, sources and pathways of disease pathogens into the body of the bird. Usually acute form mixed of the disease ran without apparent clinical signs. Externally clinically healthy birds suddenly falls and dies, but some of the bird have noted clinical manifestation. Found that the birds by acute course mixed of disease were following clinical features: chicken – feathers ruffled, depression, fever, cyanosis of the crest and earrings, and before the death of noted a convulsive phenomena; waterfowl – depression, poor motility, fever, sometimes convulsions; in young birds – slow reaction to external stimuli, depression, convulsive muscle contractions; pigeons – ruffled feathers, refusal of reception food and water fever; parrots – depression, slow response to external stimuli, laxatives phenomena, litter gray with lots of transparent mucus and red speckled inclusions. Common signs of poultry on an acute disease were: young – poor motility, depression, anorexia, rhinitis, feathers ruffled, thirst, fever, anemia, are omitted wings, profuse diarrhea, shortness of breath, conjunctivitis, swelling of the joints; an adult bird - with beak and nostrils stands out sero-mucous fluid, ruffled feathers, diarrhea, dehydration of an organism, shortness of breath, appetite is not, visible mucous membranes pale, thickened joints, hot, limping. Over the course of subacute forms of the mixed pasteurellosis and ascaridosis, clinical symptoms were the same as in the acute form, but they less pronounced as the disease ran for several days or even weeks. The bird noted profuse diarrhea, shortness of breath, cyanosis earrings and combs, depression. Ascaridia galli in with Pasteurella multocida complicates the development and progress disease.
Порівняння бокового та медіанного доступу за оваріогістеректомії у кішок
Authors: Stepanov A.D.
Published: June 2017

In the article results of examinations got in case of surgical accesses through the flank and ventral wall of the stomach’s implementation on purpose to the cats’ ovariohysterectomy are given. The research work was carried out on healthy sexually-mature cats. Surgeries were done in the upper third of the right flank abdominal wall and in the behind the umbilical zone. The cross-cut on the boundary of groin and illium area in the direction from the hook-bone’s front border to the fourth nipple of the mammary gland of the appropriate side was applied on the side abdominal wall. It is established that in case of the accomplishment of cat’s ovariohysterectomy with the use of suggested surgical access through the side abdominal wall a duration of an operation and a period of healing are in line with those which are in case of application of median laparotomy. It is proved that the surgical access with the cross-cut done in the upper third of the right flank abdominal wall and on the boundary of groin and illium area in case of cat’s ovariohysterectomy secure better opportunities for the fulfillment of the surgical method than the median one. It is also noted that in case of cat’s ovariohysterectomy the surgical access through the upper third of the right flank abdominal wall with the cut in the direction from the hook-bone’s front border to the fourth nipple of the mammary gland of the appropriate side could be recommended as an alternative of an access through the middle line of the stomach.
NON-CONVENTIONAL PET NUCLIDES: PRODUCTION AND IMAGING
Authors: Laforest Richard
Published: June 2017

Los ciclotrones médicos son usados actualmente para la producción de Nucleidos de PET. Esos dispositivos son capaces de producir haces de protones de 10-15 MeV con suficiente intensidad para la producción de radionúcleos con decaimiento β+. Los nucleidos no convencionales de PET han surgido recientemente y ofrecen nuevas oportunidades para diagnóstico y farmacoterapia. En este artículo se hará mención de la capacidad de producción de tales nucleidos en la Washington University Medical School. Serán discutidos los retos en imagenología impuestos por las características del decaimiento.
RENDIMIENTO TERMOELÉCTRICO EN COMPÓSITOS DE Ca2:94Y0:06Co4O9+d/Ag
Authors: Támara José D. , Rodríguez Julio E.
Published: June 2017

Utilizando el método de reacción de estado sólido se prepararon compósitos de Ca2:94Y0:06Co4O9+d/Ag, donde el contenido de plata tomó valores en proporciones de masa entre 0% y 10 %. Sus propiedades de transporte se estudiaron en función de la temperatura a partir de mediciones de resistividad eléctrica r(T) y coeficiente Seebeck S(T). La magnitud de la resistividad eléctrica decrece con el contenido de plata presente, hasta valores próximos a 3 mW -cm. El coficiente Seebeck es positivo en todo el rango de temperatura estudiado sugiriendo una conducción eléctrica dada por portadores de carga positivos. El rendimiento termoeléctrico se evaluó a partir del cálculo del factor de potencia PF, el cual se incrementa con el nivel de plata adicionada alcanzando valores máximos cercanos a 9:5 mW=K2cm. El comportamiento mostrado por las propiedades de transporte permiten proponer estos compósitos como potenciales materiales con aplicaciones termoeléctricas.
ANÁLOGOS CUÁNTICOS Y ELECTRODINÁMICOS APLICADOS AL SISTEMA ÓPTICO DIELÉCTRICO-SUSTRATO PARA CURSOS DE FÍSICA
Authors: Vargas Jhon H. , Castiblanco Raúl E. , Morales Jhon
Published: June 2017

Se establece la analogía entre la propagación de electrones en pozos cuánticos, con la propagación de ondas electromagnéticas entre medios dieléctricos. Al ser estudiados los fenómenos de transmisión en medios estratificados; pozos o dieléctricos, se encuentran resultados análogos. En primer lugar, se describe la transmitancia para el caso cuántico como electrodinámico. Luego, las relaciones de dispersión mediante los coeficientes de transmisión en ambos casos (electrones-luz) relacionando estos dos sistemas. Y finalmente se compara esta equivalencia con los resultados experimentales en la zona transparente (baja absorción 800-2500 (nm)) del espectro de transmisión de la película delgada de ZnSe, utilizando el método de la matriz de transferencia (MMT).
Processos formativos para a docência: o que dizem os estudantes de Pedagogia de uma IES pública?
Authors: Fleig Maria Talita , Bolzan Doris Pires Vargas
Published: June 2017

Este artigo aborda os processos formativos de estudantes em formação inicial do curso de Pedagogia Noturno de uma Instituição de Ensino Superior (IES) pública do interior do Rio Grande do Sul. Referenciado na abordagem qualitativa, o estudo caracteriza-se como sociocultural de cunho narrativo. Buscou-se, nas entrevistas semiestruturadas a partir de tópicos guia, compreender os processos formativos dos estudantes e identificar as ações autoformativas, interformativas e heteroformativas desenvolvidas, pois é possível que destas decorram a atividade discente de estudo. Os achados da pesquisa revelaram que os estudantes precisam ter iniciativa e autonomia para fazer escolhas, tomar decisões e refletir acerca das ações desenvolvidas, e para compreender o processo formativo que estão vivenciando. A busca permanente por formação sinaliza uma concepção desta permeada pela consciência do inacabamento, considerando as demandas pessoais, profissionais e sociais.
Inclusão na escola: da utopia à realidade
Authors: Dantas Nozângela Rolim , Silva Karla Fernanda Wunder da
Published: June 2017

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Vitamin C attenuates methotrexate-induced oxidative stress in kidney and liver of rats
Authors: Savran M , Cicek E , Doguc DK , Asci H , Yesilot S , Candan IA , Dagdeviren B , Cankara FN , Oncu M , Uğuz AC , Ozer MK
Published: June 2017

Like several other anticancer drugs, methotrexate (MTX) causes side effects, such as neuropathic pain, hepatotoxicity, and nephrotoxicity. Abnormal production of reactive oxygen species has been suspected in the pathophysiology of MTX-induced hepatorenal toxicity. Therefore, the aim of this study was to investigate the probable protective role of vitamin C (Vit C) on oxidative stress induced by MTX in the liver and kidney tissues of rats. A total of 32 rats were randomly and equally divided into four groups. The first group served as the control group. The second group received a single dose of 20 mg/kg of MTX intraperitoneally. To demonstrate our hypothesis, the third and the fourth groups received 250 mg/kg of Vit C for 3 days by oral gavage, with or without MTX treatment. At the end of the study, the liver and kidney tissues of the rats were collected and examined using histology. Both the tissues were assayed for malondialdehyde concentration and superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px) activities. In hepatic and renal tissues, lipid peroxidation levels were increased, whereas SOD, CAT, and GSH-Px levels were decreased by MTX. All parameters, including CAT levels in hepatic tissue, were significantly restored after the administration of Vit C for 3 days. Similar to the biochemical findings, evidence of oxidative damage was examined in both types of tissues by histopathological examination. From the results of this study, we were able to observe that Vit C administration modulates the antioxidant redox system and reduces the renal and hepatic oxidative stress induced by MTX. Vit C can ameliorate the toxic effect of MTX in liver and kidney tissues of rat.
Seismic fragility curves based on the probability density evolution method
Authors: Dang Thuat-Cong , Le Thien-Phu , Ray Pascal
Published: June 2017

A seismic fragility curve that shows the probability of failure of a structure in function of a seismic intensity, for example peak ground acceleration (PGA), is a powerful tool for the evaluation of the seismic vulnerability of the structures in nuclear engineering and civil engineering. The common assumption of existing approaches is that the fragility curve is a cumulative probability log-normal function. In this paper, we propose a new technique for construction of seismic fragility curves by numerical simulation using the Probability Density Evolution Method (PDEM). From the joint probability density function between structural response and random variables of a system and/or excitations, seismic fragility curves can be derived without the log-normal assumption. The validation of the proposed technique is performed on two numerical examples.
Polityka zrównoważonego rozwoju gmin śląskich
Authors: Lorek Agnieszka
Published: June 2017

After addressing more immediate problems following the self-governance regained in the 1990s after system transformation, local governments in Silesia began to feel the need to map out a comprehensive development strategy. One possibility for constructing a modern development strategy is to implement the concept of sustainable development. Practical implementation of policies based on the principles of sustainable development first requires local authorities to have the “political will” to implement solutions in accordance with this concept. The research done for this article was intended to help assess the progress municipalities in Silesia have made in implementing sustainable development policies. The basic research method used for the article was analysis of the data contained in the questionnaire “The policy of sustainable development”. The questionnaire was carried out by the Department of Social and Economic Policy at the University of Economics in Katowice in 2015. The results of the survey are complemented by an analysis of previously conducted surveys. Based on the studies, it can be concluded that progress has been made, if very slowly, in implementing the principles of sustainable development in local politics. The first studies, which were done in municipalities at the beginning of Poland’s post-communism transformation, point to approx. 5% of local governments trying to implement a policy of sustainable development in their communities. The share has risen to approximately 25% of the municipalities surveyed.
Współczesne wyzwania państwowej polityki rozwoju lokalnego w świetle oczekiwań władz małych miast
Authors: Sztando Andrzej
Published: June 2017

The article presents the results of research carried out in mid-2014 to identify the expectations presented by the authorities of small cities in the light of Polish state local development policy. 46 mayors were selected as the source of information about these expectations and a diagnostic survey based on long personal interviews was chosen as the research method. The expectations concerned the reform of the municipalities’ permanent funding system, changes in the systems governing EU funds distribution, providing local authorities with new instruments for shaping their municipalities’ supra-local relationships, reducing anti-patterns in policy and politics, eliminating contradictions and ambiguities in law, and changes in the rules governing both decisive and executive bodies of local authorities. The expectations discussed should be approached as contemporary challenges for state policy on local development, since the mayors refer to thorough and multidimensional alterations to that policy. Furthermore, if analysed jointly, the expectations constitute a challenge for this policy, which can be referred to as its general contemporary challenge. Local authorities expect that the state government will increase its subjectivity in defining and creating local development by extending its approval for the local development paradigm.
Oligarquia Competitiva e Profissionalização Política: O Caso dos Senadores Brasileiros na Primeira República (1889-1934)
Authors: Perissinotto Renato Monseff , Massimo Lucas , Costa Luiz Domingos
Published: June 2017

RESUMO Este artigo analisa o recrutamento de senadores do Brasil entre 1890 e 1934, período que compreende um regime político oligárquico. Pretendemos responder, para usar a terminologia de Robert Dahl, se é possível encontrar profissionalização política em meio a um regime de “oligarquias competitivas”, marcado por participação restringida e por competição política limitada a pequenos grupos dominantes. Em caso positivo, será possível problematizar a relação recorrente que a literatura clássica e contemporânea estabelece entre poliarquia e profissionalização política e sugerir que esta pode ocorrer mesmo sob um regime de “oligarquias competitivas”. A análise se baseia na reconstituição da carreira política de 851 mandatários desse período.
Reconhecimento Ideológico: Uma Reinterpretação do Legado de Gilberto Freyre sob a Ótica da Teoria do Reconhecimento
Authors: Mendonça Ricardo Fabrino , Porto Nathália França Figuerêdo
Published: June 2017

RESUMO Este artigo procura mobilizar a ideia honnethiana de reconhecimento para refletir sobre a questão racial no Brasil. Enfoca-se, especialmente, em como a noção de reconhecimento ideológico (ou distorcido) ajuda a compreender o ambivalente legado de Gilberto Freyre, que ressignifica o lugar de negros e negras na sociedade, sem descortinar-lhes, contudo, chances efetivas e sistemáticas de autorrealização. Com isso, questiona-se a ideia de que a abordagem de Axel Honneth estaria limitada a propor uma valorização simbólica de coletivos, que não alteraria padrões institucionalizados de subordinação social. Honneth, ao contrário, pretende renovar os alicerces da teoria crítica, oferecendo tanto uma maneira de realizar diagnósticos de opressões históricas, quanto caminhos para pensar uma emancipação efetivamente possível nos quadros da sociedade existente. Sua perspectiva não reduz os processos de formação do self a uma empreitada privada e pré-política, mas evidencia sua centralidade para compreender os conflitos que movem as gramáticas morais que balizam as interações sociais.
Las Prosperidades Restauradoras: el Papel de las Narrativas Pentecostales en las Estrategias de Gobierno del Sistema Carcelario Argentino
Authors: Manchado Mauricio
Published: June 2017

RESUMEN El presente artículo se propone indagar sobre las narrativas construidas por el dispositivo religioso evangélico-pentecostal en contextos de encierro en relación al papel que ocupan con la configuración de tácticas de gubernamentalidad por parte del servicio penitenciario en Argentina. Para ello, son analizados el ordenamiento social que asumen los pabellones-iglesias, la división cosmológica espiritual/mundano en la configuración de espacios y subjetividades religiosas en prisión y, asimismo, los discursos que definen a las narrativas pentecostales en el encierro en tanto que prosperidades (sanitaria, económica y penal). Tomando como casos dos cárceles de la provincia de Santa Fe, se busca, finalmente, comprender las narrativas pentecostales en los pabellones-iglesias integradas a una estrategia de gobierno que habilita la gestión de la población encarcelada, enrocándose con preceptos correccionalistas e incapacitantes cuyos efectos son la reducción de conflictividades y la definición de una cárcel que, en su cotidianidad, funcione sin novedades.
Críticas e Denúncias: A Configuração da Ação Coletiva contra a Remoção de Favelas do Rio de Janeiro
Authors: Magalhães Alexandre
Published: June 2017

RESUMO Este artigo analisa os significados da reatualização de práticas e discursos sobre a “remoção” de favelas no Rio de Janeiro, abordando a formação da ação coletiva por parte dos moradores no período compreendido entre 2009 e 2012. Busca-se compreender como as concepções destes atores acerca deste assunto interferem em sua definição enquanto problema público. A crítica primordial realizada pelos moradores nestas circunstâncias seria aos “procedimentos”, ou seja, à “forma como é feita” a remoção pela administração pública. Esta crítica se constitui em dois níveis: no primeiro, como estas intervenções afetariam as rotinas de vida e as inúmeras redes de sociabilidade tão longamente constituídas no local de moradia. No segundo nível, a questão central vincula-se a como estes processos são vistos pelos impactados como uma espécie de “desqualificação moral”.
Ignácio Rangel, a correção monetária e o PAEG: recontando a história
Authors: Domingues Fabian Scholze , Fonseca Pedro Dutra
Published: June 2017

Resumo A introdução de títulos públicos com cláusulas de indexação e a correção monetária são normalmente atribuídas ao período do PAEG. Em contraste com esta memória histórica, o artigo tem como objeto resgatar que ambas fazem parte de proposta de Ignácio Rangel, a qual foi rejeitada como projeto de Decreto Legislativo enviado ao Congresso Nacional pelo gabinete de Brochado da Rocha, na fase parlamentarista do governo João Goulart. Para tanto, apoia-se em fontes primárias, como os debates no legislativo e entrevistas, para mostrar a antecipação de Rangel nessas importantes medidas institucionais que marcarão a economia brasileira nas décadas seguintes.
MORTE POR EXAUSTÃO NO TRABALHO
Authors: Costa Cândida da
Published: June 2017

Este artigo tem por objeto a morte por exaustão no trabalho, descrevendo e analisando condições de trabalho no setor sucroalcooleiro de Ribeirão Preto e região (SP). Como objetivos, busca-se relacionar jornada exaustiva de trabalho à exigência de produção por metas e as condições de trabalho análogas à escravidão, assim como se levanta a hipótese da ocorrência de mortes de trabalhadores por exaustão, pela combinação de péssimas condições de trabalho com exigências de alto desempenho. Como procedimentos metodológicos, são analisados os atestados de óbito de oito trabalhadores e as causae mortis de vinte trabalhadores mortos no corte de cana e investigam-se as causas declaradas (parada cardiorrespiratória, pancreatite, acidente cerebral hemorrágico, infarto do miocárdio, causas desconhecidas, entre outras). Foram realizadas entrevistas com familiares (pai, mãe, esposa ou viúva, irmão) para se conhecerem as condições de saúde do(a) trabalhador(a) ao partir para o trabalho no corte de cana-de-açúcar. Com base nessa metodologia, os resultados alcançados permitem manter a hipótese de que a morte por exaustão está presente também no setor sucroalcooleiro.
The effectiveness of TiO2 additions to mortar to maintain initial conditions in terms of its reflectance to solar radiation
Authors: Dantas Sérgio Roberto Andrade , Vittorino Fulvio , Loh Kai
Published: June 2017

Abstract Contact of facades with degradation agents and direct incidence of ultraviolet radiation on external coatings make them more opaque over time, affecting their colour and reflectance characteristics. This study evaluated the effect of adding different TiO2 contents to mortars applied in concrete substrates in order to verify the reflectance maintenance on surfaces after exposure over time. Mortar with different concentrations of TiO2 (1%, 5%, 10%) were produced in relation to the total dry premix, added as a powder and compared to unpainted mortar without TiO2 (type "A") and painted mortar without TiO2 (type "B"), both used as a reference for colour and reflectance. Exposed over 16 months to climate conditions in São Paulo, regarding the maintenance of reflectance and solar radiation, the results showed that type "B" (0%TiO2) painted mortar presented the best performance. Type "C" (1%TiO2) and type "D" (5%TiO2) unpainted mortar remained more stable. Type "A" (0%TiO2) and type "E" (10%TiO2) unpainted mortar showed greater differences according to the Just Noticeable Difference (JND) range caused by dirt pick up.
Predicting the settlement behaviour of open-ended pipe piles with a large diameter
Authors: Peiffer H.
Published: June 2017

Axially loaded open-ended pipe piles can collapse in two fundamentally different ways, with or without plug formation. The factors that determine plug formation are generally not yet very well understood or described. A new model is developed to predict the settlement behaviour of large-diameter open-ended pipe piles (diameter 60–300 cm) and a new transfer function is developed for the pile tip resistance and for internal friction stress. A first application was the settlement evaluation of the Second Scheldt bridge in Temse.
Behaviour of a column–bent cap connection for a precast DSCT column
Authors: Won Deok Hee , Kim Seungjun , Seo Jihye , Lim Jung Hyun , Kang Young Jong
Published: June 2017

Considerable progress has been made in bridge construction technology with regard to reducing construction times and incorporating green technologies. In the past, the time required to fabricate a tubular pier represented approximately 50% of the total construction time needed to build an entire bridge, and many researchers have therefore shown interest in studying the construction methodology of precast piers. In this work, a column–bent cap joint for a prefabricated double-skinned composite tubular pier was developed and its application was verified through testing. Test methods, including a cyclic eccentric loading test and a static compressive loading test, were developed to evaluate the performance characteristics of the column–bent cap connection. The major parameters were analysed and a standard model for the column–bent cap connection was developed through cyclic and static testing of structural elements.
Despolitización y ética pública en la modernidad líquida. La crisis del pensarse en colectivo en la modernidad líquida
Authors: Rodríguez Casallas Diego F. , Arango Morales Xóchitl
Published: June 2017

Las relaciones existentes entre los procesos de despolitización y la ética pública en la modernidad liquida, se caracterizan por dinámicas poco perdurables, maleables y cambiantes en torno a la participación ciudadana en las instituciones políticas y la configuración de la voluntad popular, favoreciendo el conservadurismo y fenómenos de apropiación del Estado por intereses privados, tales como: el corporativismo, el clientelismo político, la corrupción y la apropiación criminal del Estado; dichos fenómenos obstaculizan la posibilidadde pensarse en colectivo y la búsqueda de proyectos de futuro realizables. Es por lo anterior que en el presente estudio teórico explicativo se abordará el fenómeno de las implicaciones que conlleva la despolitización y la ética pública en la modernidad líquida.
Eutanasia en Colombia: una mirada hacia la nueva legislación
Authors: Delgado Rojas Elkin Javier
Published: June 2017

En este artículo se busca entender los cuestionamientos y debates nacidos alrededor de la eutanasia mediante las diferentes conceptualizaciones que han girado en torno a esta práctica. La muerte como principal protagonista dentro de este procedimiento despliega numerosos debates en los distintos entornos económicos, sociales, políticos, religiosos y culturales, suscitando diversidad de pensamientos y puntos de vista en quienes están en contra y a favor de ella. Para el desarrollo del tema se especificaron las diversas nociones que han rodeado esta práctica; entre las concepciones que se tuvieron en cuenta se determinaron el origen, la posición de la Iglesia Católica respecto a esta técnica, los derechos que giran alrededor de la eutanasia y otros conceptos que han sido de gran debate en el transcurso de su historia.
Regionalismo de seguridad, la dinámica de la amenaza y el uso de la fuerza armada en América Latina/ Regionalism of security, the dynamics of the threat and the use of armed force in Latin America
Authors: Méndez-Coto Marco Vinicio
Published: June 2017

Entrevista a Jorge Battaglino/Interview to Jorge Battaglino
Pathways of Personality Development: Following Lev Vygotsky’s Guidelines
Authors: Leontiev Dmitry , Lebedeva Anna , Kostenko Vasily
Published: June 2017

The paper presents a theoretical reconstruction of Lev Vygotsky’s project on theory of personality development and highlights Vygotsky’s relevance and heuristic value for the personality psychology of our days, especially positive psychology. The authors focus on several aspects of Vygotsky’s heritage. 1. The general concept of personality within a non-classical framework. 2. The idea of self-mastery as the central explanatory concept and its relation to the modern concept of agency. 3. The role of self-reflective awareness in personality development. 4. Personality development pathways in challenging conditions. In Vygotsky’s works personality was implicitly constructed as the most integral higher mental function, while self-mastery or self-regulation was its central feature. Vygotsky’s principle of mediation states that the structure of human activity is mediated by physical or mental tools that break the S — R links and make it possible to master one’s own behavior and mental processes. By utilizing speech as a system of signs that enables the process of mastering the psychosocial reality, self-reflection makes a new basis for more complicated forms of higher mental processes that possesses more degr ees of freedom as compared with the lower ones. The law of compensation is discussed in the context of aggravated conditions of personality development, where personality answers to social boundaries, and thus achieves alternative trajectories of development. The sociocultural paradigm is thus consistent with modern thought on positive and personality psychology.
Impact of the study of marijuana and suicide in Mexico
Authors: Orozco Zavala Ricardo ,   Departamento de Modelos de Intervención, Dirección de Investigaciones Epidemiológicas y Psicosociales, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz.
Published: June 2017

Before considering the legal approval of recreational consumption, it is essential to analyze the various components of the phenomenon, including the implications in areas such as economy, national security and public health. An informed debate on the effects of
marijuana calls for scientific evidence on the benefits, harm or adverse effects of its use. The marijuana-suicide link is one of many topics that must be tackled in the field of mental health.