bluuebunny/crossref_metadata_2025 huggingface dataset:
Hematological profile of children with severe acute malnutrition: a tertiary care centre experience
Authors: Arya Arun Kumar , Kumar Pramod , Midha Tanu , Singh Mahendra
Published: June 2017

Background: Severe acute malnutrition (SAM) is associated with various pathophysiological changes in the body including hematological system. This study was done to understand the hematological profile of severely malnourished children.Methods: This case control study was conducted in the Department of pediatrics, G.S.V.M. Medical College, Kanpur from January 2014 to December 2015. 200 children, aged 6 months- 5years admitted to our hospital with SAM were enrolled as cases. 200 children with normal nutritional status without haematological or infectious conditions attending routine clinic were selected as controls. The hematological parameters were analyzed using an automated blood Analyzer.Results: 95% of the children with SAM had anemia, out of which 52% were severely anemic and 28% were moderately anemic. Mean value for hemoglobin was lower in test group (7.17±2.265gm/dl) as compared to control group (9.22±3.362gm/dl). Children with SAM had statistically significant lower mean values for red cell indices like RBC counts, MCV, MCH and MCHC compared to controls. The mean value of WBC in SAM children was 12.1±11.5×103, while it was 6.2± 7.8×103 in controls. The cases had higher mean value for neutrophils and lower mean value for lymphocytes.Conclusions: Children with SAM had lower mean hemoglobin, hematocrit and red cell indices and higher mean value of total leukocyte and platelet counts. This study recommends that more frequent studies should be done to describe the trend of hematopoietic changes in children with SAM to enhance anticipatory care and outcome of the affected children.
Fósforo remanescente em solos do Seridó Paraibano
Authors: De Arruda Jandeilson Alves , Estrela José Wellington De Medeiros , Santos Sebastiana Joelma De Azevedo , Freire José Lucínio De Oliveira
Published: June 2017

O conhecimento acerca do Fator Capacidade Tampão de Fósforo (FCP) dos solos é de extrema importância para a otimização do manejo da adubação fosfatada. O fósforo remanescente (P-rem) tem sido uma das características que mais se correlacionam com o FCP, e sua quantificação pode ajudar na compreensão do comportamento do elemento no solo. Entretanto, não há dados sobre esse atributo químico em solos do Seridó Paraibano. O objetivo deste trabalho foi quantificar o P-rem em seis solos do Seridó Paraibano e correlacioná-lo com atributos químicos e físicos do solo. Foram utilizadas amostras (camada 0-20 cm) de seis solos representativos do Seridó Paraibano, sendo estes selecionados com base na sua ocorrência e importância agrícola. Após a coleta, os solos foram secos ao ar, passados por peneira de 2 mm de malha e caracterizados química e fisicamente. Para determinação do P-rem, foram colocados 5 g de solo em erlenmeyer com uma solução de CaCl2 0,01 mol L-1, contendo 60 mg L-1 de P. Os erlenmeyers foram agitados durante cinco minutos e deixados em repouso para decantação do solo durante 16 horas. Após esse período, o P foi quantificado por colorimetria. O P-rem foi correlacionado com características químicas e físicas dos solos. Em sua maioria, os solos em estudo apresentam teores elevados de areia, pH acima de 5,5 e elevados teores de Ca+Mg, K, Na, e CTC efetiva. O P-rem, para a maioria dos solos, apresentou valores elevados, refletindo baixo FCP. Verificou-se correlação positiva e significativa com o fósforo disponível (0,56º), K (0,77*) e areia (0,72*) e negativa e significativa com Ca+Mg (-0,56º), Na (-0,74*) e argila (-0,59º). Conclui-se que os valores de P-rem dos solos do Seridó são elevados, mostrando baixo FCP, sendo influenciados principalmente pela textura mais arenosa dos solos e que o P-rem é um bom estimador do FCP.
Marketing de Relacionamento: o estudo de caso da EJA Consultoria – Empresa Júnior de Administração da UFPB
Authors: Ferreira Cavalcante Geisa Fabiane , Barroso Holanda Asp Vieira Camille , Silva Oliveira Maria de Fátima
Published: June 2017

Este artigo investiga as práticas de Marketing de Relacionamento utilizadas por uma empresa júnior (associação civil sem fins econômicos), considerando o crescimento da competitividade entre as empresas de serviços e a necessidade de diferenciação perante a concorrência. A organização em questão foi escolhida por se tratar de um caso de empreendedorismo universitário, cuja análise de práticas pode ser útil para as demais empresas juniores, para outras iniciativas universitárias como também para micro e pequenos empresários. O presente trabalho pretende, como objetivo geral, analisar o marketing usado por essa organização para se relacionar com seus públicos (clientes e parceiros) e, como objetivos específicos, identificar suas partes interessadas, apresentar as ações de Marketing de Relacionamento utilizadas, avaliar as ações à luz da teoria, além de propor melhorias às práticas de Marketing de Relacionamento adotadas. Buscase, também, comprovar as hipóteses da existência de práticas de relacionamento envolvidas na cultura, nas estratégias e nas operações da organização e da criação de uma relação de confiança como principal estratégia do Marketing de Relacionamento da EJA Consultoria. Para tal, foram analisadas as referências existentes sobre o tema, subdividindo-as em: definições, correntes de estudo, importância de relações de confiança, construção, avaliação do engajamento de uma organização, benefícios e práticas do Marketing de Relacionamento, além de ter estudado o uso dessas práticas em empresas de serviços e a definição de uma empresa júnior. A metodologia baseia-se em um estudo de caso, precedido de uma revisão bibliográfica e realizado por meio de uma entrevista semiestruturada (realizada no segundo semestre de 2011), gerando uma análise qualitativa, exploratória e descritiva. O resultado obtido revela que a organização possui boas práticas de Marketing de Relacionamento para com as partes interessadas, tendo sido detectada a necessidade de maior definição das estratégias de tal marketing e um maior foco nos clientes.
Меняющаяся роль финансового менеджмента организации в современной среде
Authors: Пятанова Виктория Ивановна
Published: June 2017

В статье рассматриваются вопросы развития подходов и практики финансового менеджмента организации в современных условиях. Сегодня высоко конкурентная, волатильная и сложная внешняя среда предполагает меняющуюся роль финансов в организации. Среди ключевых компетенций в области финансового менеджмента усиливается значение финансовой стратегии и ее связи со стратегией организации; совершенствования подходов к анализу затрат и прибыльности; оценки инвестиционных проектов; взаимосвязи финансовых и нефинансовых целей; этических вопросов в финансах и бизнесе; применения информационных технологий; работы с большими данными. В работе рассматриваются практические аспекты трансформации роли финансов в компании, в частности, направления совершенствования работы современного финансового менеджмента, вопросы анализа затрат и прибыльности, использования новых технологий и автоматизации финансовых операций.
Развитие предпринимательской деятельности в Пермском крае: экологические аспекты
Authors: Воронина Анна Геннадьевна , Руденко Марина Николаевна
Published: June 2017

В статье рассмотрены теоретические подходы к государственному регулированию предпринимательской деятельности с целью охраны окружающей среды и стимулирования модернизации и внедрения экологических инноваций на промышленных производствах. На примере одного из наиболее промышленно развитых регионов РФ - Пермского края проведен анализ загрязнения атмосферного воздуха промышленными предприятиями, осуществляющими свою деятельность в регионе, а также проведен анализ государственного регулирования предпринимательской деятельности на государственном и региональном уровнях с целью охраны окружающей среды и стимулирования экологической модернизации промышленных предприятий. На основе анализа определены приоритетные направления совершенствования системы охраны окружающей среды с целью стимулирования модернизации и внедрения экологических инноваций на промышленных предприятиях на федеральном и региональном уровнях.
Роль инфраструктуры сектора спортивных услуг в экономическом развитии мезосистем
Authors: Ногуманов Равиль Уелович
Published: June 2017

Организация крупных спортивных мероприятий в стране требует колоссальных затрат на строительство и модернизацию спортивной и городской инфраструктуры. Проведение таких международных соревнований оказывает непосредственное влияние на ВРП, ВВП стран, и, следовательно, на развитие экономической сферы жизни общества, а также социальной подсистемы. Проблема исследования зависимости экономики региона является актуальной на протяжении многих десятилетий, это обусловило выбор тематики настоящего исследования. В данной статье исследуется статистическая информация об изменении ВВП стран, а также ВРП регионов России, на основе чего авторами проведена корреляция изменения ВВП (ВРП) от проведения международного спортивного мероприятия в стране (регионе). Авторами построена и оценена на адекватность производственная функция Кобба-Дугласа, включающая такие факторы как капитал (финансирование сферы физической культуры и спорта) и труда (кадровые ресурсы в спортивной индустрии). Также представлены результаты опроса россиян о позитивных и негативных последствиях подобных мероприятий.
Профессиональные стандарты как средство снижения прекаризации труда
Authors: Ильвес Эдгар Владиславович , Ильвес Галина Николаевна
Published: June 2017

Изменения, происходящие в трудовой сфере современного российского общества, способствуют росту прекаризации труда и утрате профессиональной самоидентификации субъектов труда. В статье показано, что разработка и внедрение профессиональных стандартов создаст условия для независимой оценки квалификаций, что обеспечит уверенность работников в социальной ценности своей профессии и собственного труда, возможности трудовой мобильности, повышения квалификации и карьерного роста, снизит риски прекаризации и будет способствовать стабилизации рынка труда.
Any small change?: Teacher education, compassion, understandings and perspectives on global development education
Authors: Varadharajan Meera , Buchanan John
Published: June 2017

Increased migration of people(s), goods, ideas and ideologies necessitate global understanding, empathies and responses on the part of teachers and their students. This paper investigates the effects on 100 primary pre-service teachers' understandings of and attitudes toward a semester-long
course exploring, inter alia, global development. The research was undertaken in Sydney, Australia. Near-identical surveys were administered at the course's beginning and end, for comparison. Additionally, four students volunteered to participate in a focus group for further discussion. Students'
understandings, including misunderstandings, are examined in the context of their future professional responsibilities and of the related literature. While attitudes to those in underdeveloped countries appeared generally empathetic, this was premised on relatively limited or inaccurate 'knowledge'.
The paper questions the adequacy of compassion as a motivating factor in global development education and action, and related subject shortcomings. Moreover, it examines the contribution of compassion as an enabler or impediment to global equities and justices, and considers other approaches.
The paper also explores implications for teacher education and accordingly posits some recommendations.
Discussion on Redesign of Image from Digital Printing Process
Authors: Luo Mingying
Published: June 2017

Digital printing is an indispensable link in the modern printing technology. It is the traditional pre-press process on the transition to digital technology in imaging technology, the digital printing technology. Digital printing expounds digital image process in the design means and methods and their influences on the printing quality from the angle of separation method, image processing method, etc..
Efectos de las técnicas de aprendizaje de la locución en radio (TALER) en el desarrollo de competencias para la locución en la radiofonía informativa
Authors: Viladegut Hugo
Published: June 2017

El presente trabajo: “Efectos de las técnicas TALER en el desarrollo de competencias para la locución en la radiofonía informativa” propone la validación de un conjunto de técnicas para la formación de locutores de radio. El problema que se plantea es: ¿Cómo influyen las técnicas de aprendizaje de la locución en radio (TALER) en la formación de los aspirantes a ser locutores de radio en el Taller de Locución Radiofónica Informativa de la EAP Ciencias de la Comunicación de la Universidad Alas Peruanas de Lima con las habilidades y destrezas que exige el desempeño profesional?. Se ha trabajado en una muestra de 32 alumnos. 16 se han seleccionado al azar para el Grupo Experimental y 16 para el Grupo Control. Con el grupo experimental se ha trabajado durante un semestre en dos sesiones por semana de 2 horas cada una con las técnicas innovadoras del método TALER. Con el grupo control se ha trabajado en el mismo tiempo aplicándoseles el método tradicional, Al final se ha aplicado una prueba que examina las 4 dimensiones propuestas. El resultado ha sido una media proporcional de 14.5 sobre 20 para el grupo experimental y de 11.56 sobre 20 para el grupo control. La investigación ha demostrado eficacia en la formación de locutores con las exigencias de las empresas de radio informativas.Palabras Clave: Técnicas, TALER, locución. Radiofonía, competencias.DOI: http://dx.doi.org/10.21503/CienciayDesarrollo.2016.v19i1.06
Estudio comparativo in vitro de la resistencia a la fractura frente a carga estática transversal en premolares inferiores con preparación biomecánica manual versus Protaper, 2013-2015
Authors: León Alfredo , Huamani José
Published: June 2017

Evaluar las diferencias en la resistencia a la fractura frente a carga estática transversal in vitro de los premolares inferiores con preparación biomecánica manual versus protaper. Material y método: Se realizó un estudio experimental, prospectivo, longitudinal y analítico. Se incluyeron 30 premolares divididos en grupo A (n=15) con preparación biomecánica manual y grupo B (n=15) preparación biomecánica prota­per; preservados en una solución de NaCl al 0,9%. Resultados: La resistencia a la fractura en el grupo A fue 99,73 +/- 15,16 Kg-f; localizado predominantemente a nivel radicular y con distribución vertical (60,0%); y en el grupo B fue 75,00 +/- 20,53 Kg-f; localizado predominantemente a nivel radicular con distribución vertical y oblicua (46,7%; 40,0% respetivamente). Conclusión: Con un p-valor= 0,001 se encontró que existen diferencias significativas en la resistencia a la fractura frente a carga estática transversal in vitro de los premolares inferiores con preparación biomecánica manual versus el protaper.Palabras clave: Preparación biomecánica manual, protaper, in vitroDOI: http://dx.doi.org/10.21503/CienciayDesarrollo.2016.v19i2.01
Evaluación del nivel de concentración de metales pesados en el aire, en los distritos de Callería, Yarinacocha y Manantay, Provincia de Coronel Portillo – Ucayali – Pucallpa – Perú
Authors: Miranda Edwin , Arriaga Liz
Published: June 2017

El presente trabajo de investigación se realizó con el objetivo de determinar el nivel de concentración de metales pesados en el aire, en los distritos de Callería, Yarinacocha y Manantay, Provincia de Coronel Portillo, Región de Ucayali. El tipo de investigación es Sustantiva, el nivel es Descriptivo y el método de la investigación es Naturalista, el diseño es Descriptivo - Transversal.El universo de este estudio son los distritos de Callería, Yarinacocha y de Manantay, provincia de Coronel Portillo, región Ucayali. La muestra de este estudio de investigación son 14 puntos distribuidos estratégicamente dentro de la ciudad de Pucallpa. Los resultados obtenidos fueron, el Cadmio tiene una concentración de 3.7 ug/m3, sobre pasando al AAQC 24 Hr con 1.7 ug/m3, el cromo tiene una concen­tración de 8.9 ug/m3, sobre pasando al AAQC 24 Hr con 7.4 ug/m3, el cobre tiene una concentración de 7.4 ug/m3, encontrándose dentro del AAQC 24 Hr, el Hierro tiene una concentración de 25.2 ug/m3, sobre pasando al AAQC 24 Hr con 0.2 ug/m3, el manganeso tiene una concentración de 3.0 ug/m3, sobre pasando al AAQC 24 Hr con 0.5 ug/m3, el Plomo tiene una concentración de 23.8 ug/m3, sobre pasando al AAQC 24 Hr con 21.8 ug/m3 y el Zinc tiene una concentración de 90 ug/m3, encontrándose dentro del AAQC 24 Hr.Palabras clave: Metales, contaminación, aire, atmosfera, plomo.DOI: http://dx.doi.org/10.21503/CienciayDesarrollo.2016.v19i2.04
La utilidad lógica como criterio de verdad para determinar la esencia de las cosas en el proceso del conocimiento sensible
Authors: Gálvez Mario
Published: June 2017

Establecer cómo el cerebro determina la esencia de las cosas es un problema hasta hoy no resuelto, a través de la presente investigación se intenta demostrar que uno de los criterios de verdad que se utilizan en el proceso de conocimiento sensible es la utilidad lógica. Para ello se realizó una investigación en dos fases, la primera de carácter cuantitativa y la segunda cualitativa. La primera fase logró determinar que no basta el uso de los sentidos para determinar la esencia de los objetos, en experimentos visuales realizados a 73 niños se pudo establecer que cerca del 95% no podía establecer la esencia de los objetos mostrados. Sin embargo, al momento de conocer su utilidad el 90% podía fácilmente establecer la esencia del mismo objeto. Para la segunda fase se utilizó el método fenomenológico, a través de este, se pudo describir e in­terpretar el fenómeno investigado. El proceso de investigación permitió concluir que el criterio de verdad que se utiliza para determinar la esencia de las cosas en el proceso del conocimiento sensible es la utilidad lógica inferida gracias a la experiencia acumulada.Palabras clave: Utilidad lógica, criterio de verdad, conocimiento sensible.DOI: http://dx.doi.org/10.21503/CienciayDesarrollo.2016.v19i2.06
Konferencja Polskiego Towarzystwa Fizyki Medycznej
Authors: Piotrowski Tomasz
Published: June 2017

Koleżanki    i    Koledzy,Oddajemy w Wasze ręce streszczenia prac, które zostaną zaprezentowane podczas konferencji naukowej Polskiego Towarzystwa Fizyki Medycznej, organizowanej w Wielkopolskim Centrum Onkologii w Poznaniu w dniach 01-03.06.2017 r.Tegoroczna Konferencja cieszy się dużym zainteresowaniem środowiska fizyków medycznych w Polsce. W przeciągu pierwszych trzech dni czerwca będziemy gościć ponad 200 uczestników, którzy zaprezentują ponad 100 prac naukowych. Zagadnienia naukowe prezentowane podczas Konferencji pogrupowane zostały w następujące wątki tematyczne: nanotechnologia w medycynie, biosygnały, ochrona radiologiczna, brachyterapia, teleradioterapia i diagnostyka obrazowa. Sesje plenarne dla każdego wątku tematycznego poprzedzone zostaną wykładami edukacyjnymi. Łącznie zaplanowano 10 wykładów edukacyjnych. Nadesłane prace ocenione zostały przez niezależnych recenzentów będących specjalistami w dziedzinach odpowiadających wątkom tematycznym Konferencji. Każda z prac, uprzednio zanonimizowana (metoda „duble blinded”), oceniona została przez trzech recenzentów. W wyniku przeprowadzonej oceny, recenzenci wyłonili dla każdego wątku tematycznego najciekawszą pracę, której autor zostanie nagrodzony w trakcie Ceremonii Otwarcia przewidzianej w pierwszym dniu Konferencji. Ponadto, 19 prac zostanie zaprezentowanych w postaci wystąpień ustnych podczas sesji plenarnych, 28 prac w formie sprawozdania ustnego podczas sesji plakatowych oraz 60 w postaci plakatu elektronicznego. W trakcie konferencji przewidziane są także wycieczki do Zakładu Protetyki Słuchu, Katedry Biofizyki Uniwersytetu Medycznego w Poznaniu oraz na Wydział Fizyki Uniwersytetu im. Adama Mickiewicza i Poznańskiego Centrum Diagnostyki Obrazowej. Odbędą się Walne Zebrania Polskiego Towarzystwa Fizyki Medycznej oraz Ogólnopolskiego Związku Zawodowego Fizyków Medycznych. Będziemy mogli także wysłuchać dwóch sympozjów satelitarnych oraz trzech wykładów przygotowanych przez firmy sponsorskie.Ostatniego dnia planowane jest przeprowadzenie ćwiczeń praktycznych z zakresu diagnostyki obrazowej, dozymetrii klinicznej oraz monitoringu ruchomości obszaru tarczowego w trakcie radioterapii. W imieniu komitetu naukowego i organizacyjnego Konferencji życząc owocnych obrad, inspiracji i współprac. dr hab. n. med. Tomasz PiotrowskiPrzewodniczący Komitetu Organizacyjnego Konferencji PTFM 2017
The poetics of comic in the «The Twelve Chairs» novel (to the problem of a funny word)
Authors: Kildyaeva Yulia Igorevna
Published: June 2017

The article deals with the role of a funny word in the comic structure of «The Twelve Chairs» by I. Ilf and E. Petrov. The researcher reveals its different functions taking into account authors’ strategy, directed to the creation of a special type of comic.
Some approaches to sanitation relaparotomy in patients with complicated abdominal trauma
Authors: Muratov Abdizhalil Abdyrazakovich , Abdykalykov Kozubai Orozokulovich , Kutuev Zhanybek Akunovich
Published: June 2017

The article deals with separate approaches to relaparotomy based on the studies of tye results of sanitation relaparotomy (SRL) in 36 patients with abdominal trauma complicated by postoperative peritonitis. The analysis of the rating information of surgeons involved in the SRL have been carried out. With a multiple organ failure, the lethality after SRL increases 4-fold. If surgeons of higher professional skills participate in the process of SRL, the chances of a favorable outcome of the operation increase, and the level of adverse outcome markedly reduces.
The problem of accounting information quality in the context of accounting data distortion
Authors: Popandopulo Ksenia Dmitrievna , Marynenko Ekaterina Viktorovna , Oksanich Elena Anatolyevna
Published: June 2017

The information about the activities of the organization plays an important role in making any decisions. Accounting financial statement is the main official source of such information. This is what increases the requirements for the preparation of financial statements. This article provides the types of errors in reporting, as well as methods of internal and external control.
W POSZUKIWANIU KORELATÓW WZMOŻONEJ POBUDLIWOŚCI PSYCHICZNEJ
Authors: MARTOWSKA KATARZYNA , MATCZAK ANNA
Published: June 2017

W artykule przedstawiono wyniki badań nad związkiem wzmożonej pobudliwości psychicznej z cechami temperamentu, inteligencją, kompetencjami emocjonalnymi i społecznymi oraz samopoczuciem. Wyniki pokazały, że związki te kształtują się odmiennie dla różnych typów wzmożonej pobudliwości psychicznej, co przemawia za niejednorodnością tego konstruktu.
SYNERGICZNA AKTUALIZACJA SIEBIE A PRZEŻYWANE RELACJE DO BOGA WŚRÓD MATURZYSTÓW
Authors: LISZEWSKI TOMASZ
Published: June 2017

Problematyka artykułu koncentruje się wokół związków zachodzących u młodzieży maturalnej między przeżywanymi relacjami do Boga oraz sposobem kształtowania własnego życia przez wchodzenie w relacje międzyludzkie. Przeprowadzono badania na grupie 172 maturzystów (88 kobiet, 84 mężczyzn) z różnych szkół, wykorzystując Kwestionariusz stylów aktualizacji siebie (KSAS) Uchnasta, a także Skalę relacji religijnych – przeżywane relacje do Boga (SRR) autorstwa Hutsebauta. Wyniki badań w większości potwierdziły postawione hipotezy badawcze. W badanej grupie różne style aktualizacji siebie wiążą się z przeżywanymi poszczególnymi relacjami do Boga, przy czym w zdecydowanej większości przypadków relacje zaklasyfikowane jako dojrzałe mają związki odmienne niż relacje określone jako niedojrzałe.
Általános iskolás tanulók és egyetemi hallgatók fogalomképzetei a függvényről
Authors: Szanyi Gyöngyi
Published: June 2017

A függvény fogalma alapvető fontosságú a matematikában. Minthogy a legtöbb matematikai fogalmat nem lehet egylépésben elsajátítani [13], így a függvény fogalmának kialakítása is hosszú folyamat. Ennek egyik célja a hatékony fogalomképzet kialakítása, mely nagy jelentőséggel bír a problémamegoldásban. A tanulók legtöbbször a fogalomképzetükre támaszkodva döntenek arról, hogy egy objektum példája vagy ellenpéldája az adott fogalomnak (Vinner & Dreyfus, 1989). Jelen tanulmányban felmérések keretén belül végzett vizsgálatokkal arra a kérdésre keressük a választ, hogy milyen fogalomképzettel rendelkeznek az általános iskolát fejező tanulók (8. osztály) és az egyetem első évét megkezdő mérnökhallgatók a függvényről.
Egy matematika jegyzetről mérnökhallgatóknak
Authors: Varga Adrienn
Published: June 2017

Mennyire oktassuk a matematikát precízen? Milyen mértékű legyen az alkalmazás-orientáltság? Megkíséreljük megválaszolni e kérdéseket néhány illusztratív példával, melyeket a mérnökhallgatók oktatásánál motiválásként használhatunk. Egy elkészült jegyzetet mutatunk be, mely a Debreceni Egyetem Műszaki Karán folyó mérnökképzés során elsajátítandó, haladottabb matematikai kurzusok anyagába nyújt betekintést.
Alkalmazásorientált matematikaoktatás a DE Műszaki Karán
Authors: Kézi Csaba , Nagyné Kondor Rita , Szíki Gusztáv Áron
Published: June 2017

A Debreceni Egyetem Műszaki Karának Műszaki Alaptárgyi Tanszékén közel egy évtizede foglalkozunk az egyetemi alapképzésben oktatott matematika tárgyak módszertani megújításával. Ennek a hosszú alkotómunkának az eredménye a nemrégiben megjelent ,,Matematikai eszközök mérnöki alkalmazásokban” című tankönyv, amely a matematika legfontosabb eszközeinek (vektorok, mátrixok, lineáris függvények,komplex számok, differenciál és integrálszámítás) különböző alkalmazásait mutatja be a műszaki és természettudományok, valamint a közgazdaságtan egyes területein. A jelen közleménnyel a szerzők célja a fenti tankönyv, valamint az általa megtestesített oktatási, szakmódszertani irányvonal bemutatása, népszerűsítése.
Matematikai kompetencia- és attitűdvizsgálat mérnökhallgatók körében
Authors: Kocsis Imre , Sebők-Sipos Dóra
Published: June 2017

A tanulási folyamat hatékonyságáról manapság egyre több szó esik a felsőoktatásban, ezen belül a műszaki felsőoktatásban is. A hatékonyság mérése az elvárt kompetenciák rendszerének célszerű kialakításával és a kompetenciák megszerzésének ellenőrzésével lehetséges. Ebben a cikkben egy olyan felmérést mutatunk be, melyet mérnöki alapdiplomával (főiskolai, BSc) rendelkező hallgatók körében készült, akik mesterképzésen folytatják tanulmányaikat. Arra voltunk kíváncsiak, hogy egyes problémakörökhöz kapcsolódó gondolati sémák megmaradtak-e, képesek-e megfelelően reagálni a kérdésfelvetésekre, rendelkeznek-e a matematika tanulása során megszerezhető kompetenciákkal. A lexikális tudás felmérése nem volt cél, a feladatok nehézségi szintje nem érte el az alapképzések számonkéréseinek átlagos szintjét. A kérdőív első része a korábbi tanulmányokra, valamint a matematika tanulásához kapcsolódó emlékekre, tapasztalatokra, illetve az ismeretek alkalmazhatóságára kérdez rá.
Desenvolvimento de um transferidor de leite adaptado ao vácuo da ordenha
Authors: Lopes Marcos , Silva Edgar Moreira da , Lopes Marcos Aurélio , Cardoso Milton Ghedini
Published: June 2017

It was intended to study the viability of the milk transfer adapted to the vacuum piping of the milking machine, present its composition, its functioning and indicators in the aspects of labor and milk quality. The study was conducted on a farm in the municipality of Piranguinho – Brazil, where milk is produced with family farming characteristics during the period of August of 2015 to June of 2016. The data were collected through visits performed on farms where interviews and observations about the use of the equipment were done. Results of milk analyses over a period with and without the use of transfer were utilized, aiming to investigate possible alterations of milk quality. Among the results found, the making of the milk transfer adapted to the vacuum milking machine stands out, with low cost pieces. Its functionality in the milk transportation from the milking parlor to the cooling tank was found in substitution to the hand carrying in cans. There was no significant interaction of milk quality in the total bacterial count when compared with the periods with or without milk transfer.
Tip gap size effects on thermal performance of cavity-winglet tips in transonic turbine cascade with endwall motion
Authors: Zhong Fangpan , Zhou Chao
Published: June 2017

The thermal performance of two cavity-winglet tips with endwall motion is investigated in a transonic high pressure turbine cascade, which operates at an engine representative exit Mach number of 1.2 and an exit Reynolds number of 1.7 × 106. The numerical method is first validated with experimental data and then used to investigate blade heat transfer at three different tip clearances of 1.1, 2.1 and 3.1% chord. The effects of relative endwall motion are considered. The present results show that as the size of the tip gap increases, the heat transfer coefficient and heat load on the tip increases. The winglet geometries on the blade tip mainly affect the tip flow structure close to them. At a larger tip clearance, the size of the separation bubble above the pressure side winglet increases. The heat transfer coefficient is high on the pressure side winglet due to the flow reattachment at all tip clearances. Within the tip gap, when the size of the tip clearance increases, the size of the cavity vortex increases and the cavity scraping vortex due to relative endwall motion becomes smaller. The impingement of the both two vortexes can lead to high heat transfer coefficient on the cavity floor surface. On the blade suction surface, when the size of the tip clearance increases, the heat transfer coefficient of the cavity tip increases, but those of the winglet tips decreases. The heat transfer coefficient is high on the side surface of the suction side winglet at all tip clearances because of the tip leakage flow impingement.
Los animales en los haikus de José Juan Tablada: Taxonomía de una fauna interior
Authors: Vásquez Hurtado David
Published: June 2017

En el libro de haikus titulado Jarro de flores, del poeta mexicano José Juan Tablada (1871-1945), los animales son instancias de percepción hacia la reconstrucción de la voz poética en un peregrinaje interior. Comienza con la búsqueda de una voz primitiva representada en el sapo y el perro. El próximo destino será el jardín japonés con animales diminutos evanescentes a la percepción. El siguiente será un paisaje hispanoamericano de animales grandes ya sometidos a la mirada. Posteriormente el poeta asume el control de su voz poética en un paisaje oceánico, con animales marítimos elaborados mediante la intertextualidad. El punto de llegada es una integración de estas diversas instancias de percepción.

 
Ángeles Mastretta: mujeres, revolución y melodrama
Authors: López Cáceres Alejandro
Published: June 2017

En este artículo se analiza la obra ficcional de la escritora Ángeles Mastretta. Y nos detenemos en tres de sus aspectos más destacados y polémicos: su relación con el feminismo, su manera de revisitar la historia mexicana del siglo XX y su inclinación hacia el melodrama. Iniciamos recogiendo las principales descalificaciones que la crítica literaria ha realizado contra esta autora y contra su narrativa. Sin embargo, leemos tales reprobaciones en el contexto general de los debates surgidos a propósito del “post-boom” latinoamericano. Esto significa considerarlas a la luz de las transformaciones que se presentaron ―durante las postrimerías de nuestro siglo XX― respecto de los paradigmas literarios aportados y legitimados desde el llamado Boom. En relación con el primer aspecto, hacemos notar cómo ―al carecer de una concepción orgánica o programática― el punto de vista de esta narradora es más bien femenino que feminista. A propósito de su mirada sobre el México revolucionario y post-revolucionario, destacamos su visión crítica e iconoclasta, así como su valioso énfasis en el ámbito de la vida privada de aquellos que ejercen el poder. Finalmente, nos detenemos a revisar el mayor reparo a partir del cual los críticos de Mastretta se niegan a reconocerle algún valor literario a su trabajo; esto es: su filiación con un insumo representacional tan denostado como el melodrama. En nuestro examen, no obstante, operamos de un modo menos prejuiciado. De allí que escudriñemos el proceder heterodoxo de Mastretta frente a este género; es decir, la manera en que lo parodia, lo ensancha, lo enriquece.
Prion Protein Interactome: Identifying Novel Targets in Slowly and Rapidly Progressive Forms of Alzheimer’s Disease
Authors: Zafar Saima , Shafiq Mohsin , Younas Neelam , Schmitz Matthias , Ferrer Isidre , Zerr Inga
Published: June 2017

Rapidly progressive Alzheimer’s disease (rpAD) is a variant of AD distinguished by a rapid decline in cognition and short disease duration from onset to death. While attempts to identify rpAD based on biomarker profile classifications have been initiated, the mechanisms which contribute to the rapid decline and prion mimicking heterogeneity in clinical signs are still largely unknown. In this study, we characterized prion protein (PrP) expression, localization, and interactome in rpAD, slow progressive AD, and in non-dementia controls. PrP along with its interacting proteins were affinity purified with magnetic Dynabeads Protein-G, and were identified using Q-TOF-ESI/MS analysis. Our data demonstrated a significant 1.2-fold decrease in di-glycosylated PrP isoforms specifically in rpAD patients. Fifteen proteins appeared to interact with PrP and only two proteins3/4histone H2B-type1-B and zinc alpha-2 protein3/4were specifically bound with PrP isoform isolated from rpAD cases. Our data suggest distinct PrP involvement in association with the altered PrP interacting protein in rpAD, though the pathophysiological significance of these interactions remains to be established.
State-Population Narrowing Effect in Two-Photon Absorption for Intense Hard X-ray Pulses
Authors: Tyrała Krzysztof , Wojtaszek Klaudia , Pajek Marek , Kayser Yves , Milne Christopher , Sá Jacinto , Szlachetko Jakub
Published: June 2017

We report on studies of state-populations during the two-photon absorption process using intense X-ray pulses. The calculations were performed in a time-dependent manner using a simple three-level model expressed by coupled rate equations. We show that the proposed approach describes well the measured rates of X-rays excited in the one-photon and two-photon absorption processes, and allows detailed investigation of the state population dynamics during the course of the incident X-ray pulse. Finally, we demonstrate that the nonlinear interaction of X-ray pulses with atoms leads to a time-narrowing of state populations. This narrowing-effect is attributed to a quadratic incidence X-ray intensity dependence characteristic for nonlinear interactions of photons with matter.
Virtual Inertia: Current Trends and Future Directions
Authors: Tamrakar Ujjwol , Shrestha Dipesh , Maharjan Manisha , Bhattarai Bishnu , Hansen Timothy , Tonkoski Reinaldo
Published: June 2017

The modern power system is progressing from a synchronous machine-based system towards an inverter-dominated system, with large-scale penetration of renewable energy sources (RESs) like wind and photovoltaics. RES units today represent a major share of the generation, and the traditional approach of integrating them as grid following units can lead to frequency instability. Many researchers have pointed towards using inverters with virtual inertia control algorithms so that they appear as synchronous generators to the grid, maintaining and enhancing system stability. This paper presents a literature review of the current state-of-the-art of virtual inertia implementation techniques, and explores potential research directions and challenges. The major virtual inertia topologies are compared and classified. Through literature review and simulations of some selected topologies it has been shown that similar inertial response can be achieved by relating the parameters of these topologies through time constants and inertia constants, although the exact frequency dynamics may vary slightly. The suitability of a topology depends on system control architecture and desired level of detail in replication of the dynamics of synchronous generators. A discussion on the challenges and research directions points out several research needs, especially for systems level integration of virtual inertia systems.
Modified Godard Timing Recovery for Non Integer Oversampling Receivers
Authors: Josten Arne , Baeuerle Benedikt , Dornbierer Edwin , Boesser Jonathan , Hillerkuss David , Leuthold Juerg
Published: June 2017

A timing recovery algorithm is introduced that operates with less than two samples per symbol and provides an enormous complexity reduction. The complexity reduction is due to a synergy with the already existing Fourier transforms in a coherent receiver, an avoidance of terms that are dominated by noise, and a complete elimination of multiplications. A simulation and an experiment with a single carrier modulation format show that the inherent timing jitter is, despite of the significant complexity reduction, comparable with the state of the art, and in particular outperforms the Godard algorithm for low roll-off factors. In addition, it is one of the few algorithms that operates with less than two samples per symbol in the frequency domain, and thus enables the lowest complexity in a receiver.
Laser and Electron Beam Additive Manufacturing Methods of Fabricating Titanium Bone Implants
Authors: Wysocki Bartłomiej , Maj Piotr , Sitek Ryszard , Buhagiar Joseph , Kurzydłowski Krzysztof , Święszkowski Wojciech
Published: June 2017

Additive Manufacturing (AM) methods are generally used to produce an early sample or near net-shape elements based on three-dimensional geometrical modules. To date, publications on AM of metal implants have mainly focused on knee and hip replacements or bone scaffolds for tissue engineering. The direct fabrication of metallic implants can be achieved by methods, such as Selective Laser Melting (SLM) or Electron Beam Melting (EBM). This work compares the SLM and EBM methods used in the fabrication of titanium bone implants by analyzing the microstructure, mechanical properties and cytotoxicity. The SLM process was conducted in an environmental chamber using 0.4–0.6 vol % of oxygen to enhance the mechanical properties of a Ti-6Al-4V alloy. SLM processed material had high anisotropy of mechanical properties and superior UTS (1246–1421 MPa) when compared to the EBM (972–976 MPa) and the wrought material (933–942 MPa). The microstructure and phase composition depended on the used fabrication method. The AM methods caused the formation of long epitaxial grains of the prior β phase. The equilibrium phases (α + β) and non-equilibrium α’ martensite was obtained after EBM and SLM, respectively. Although it was found that the heat transfer that occurs during the layer by layer generation of the component caused aluminum content deviations, neither methods generated any cytotoxic effects. Furthermore, in contrast to SLM, the EBM fabricated material met the ASTMF136 standard for surgical implant applications.
Potential of Livestock Generated Biomass: Untapped Energy Source in India
Authors: Kaur Gagandeep , Brar Yadwinder , Kothari D.P.
Published: June 2017

Modern economies run on the backbone of electricity as one of major factors behind industrial development. India is endowed with plenty of natural resources and the majority of electricity within the country is generated from thermal and hydro-electric plants. A few nuclear plants assist in meeting the national requirements for electricity but still many rural areas remain uncovered. As India is primarily a rural agrarian economy, providing electricity to the remote, undeveloped regions of the country remains a top priority of the government. A vital, untapped source is livestock generated biomass which to some extent has been utilized to generate electricity in small scale biogas based plants under the government's thrust on rural development. This study is a preliminary attempt to correlate developments in this arena in the Asian region, as well as the developed world, to explore the possibilities of harnessing this resource in a better manner. The current potential of 2600 million tons of livestock dung generated per year, capable of yielding 263,702 million m3 of biogas is exploited. Our estimates suggest that if this resource is utilized judiciously, it possesses the potential of generating 477 TWh (Terawatt hour) of electrical energy per annum.
Lean VOC-Air Mixtures Catalytic Treatment: Cost-Benefit Analysis of Competing Technologies
Authors: Baldissone Gabriele , Demichela Micaela , Fissore Davide
Published: June 2017

Various processing routes are available for the treatment of lean VOC-air mixtures, and a cost-benefit analysis is the tool we propose to identify the most suitable technology. Two systems have been compared in this paper, namely a “traditional” plant, with a catalytic fixed-bed reactor with a heat exchanger for heat recovery purposes, and a “non-traditional” plant, with a catalytic reverse-flow reactor, where regenerative heat recovery may be achieved thanks to the periodical reversal of the flow direction. To be useful for decisions-making, the cost-benefit analysis must be coupled to the reliability, or availability, analysis of the plant. Integrated Dynamic Decision Analysis is used for this purpose as it allows obtaining the full set of possible sequences of events that could result in plant unavailability, and, for each of them, the probability of occurrence is calculated. Benefits are thus expressed in terms of out-of-services times, that have to be minimized, while the costs are expressed in terms of extra-cost for maintenance activities and recovery actions. These variable costs must be considered together with the capital (fixed) cost required for building the plant. Results evidenced the pros and cons of the two plants. The “traditional” plant ensures a higher continuity of services, but also higher operational costs. The reverse-flow reactor-based plant exhibits lower operational costs, but a higher number of protection levels are needed to obtain a similar level of out-of-service. The quantification of risks and benefits allows the stakeholders to deal with a complete picture of the behavior of the plants, fostering a more effective decision-making process. With reference to the case under study and the relevant operational conditions, the regenerative system was demonstrated to be more suitable to treat lean mixtures: in terms of time losses following potential failures the two technologies are comparable (Fixed bed plant: 0.35 h/year and Reverse flow plant: 0.56 h/year), while in terms of operational costs, despite its higher complexity, the regenerative system shows lower costs (1200 €/year).
Reinforcement Learning for Predictive Analytics in Smart Cities
Authors: Kolomvatsos Kostas , Anagnostopoulos Christos
Published: June 2017

The digitization of our lives cause a shift in the data production as well as in the required data management. Numerous nodes are capable of producing huge volumes of data in our everyday activities. Sensors, personal smart devices as well as the Internet of Things (IoT) paradigm lead to a vast infrastructure that covers all the aspects of activities in modern societies. In the most of the cases, the critical issue for public authorities (usually, local, like municipalities) is the efficient management of data towards the support of novel services. The reason is that analytics provided on top of the collected data could help in the delivery of new applications that will facilitate citizens’ lives. However, the provision of analytics demands intelligent techniques for the underlying data management. The most known technique is the separation of huge volumes of data into a number of parts and their parallel management to limit the required time for the delivery of analytics. Afterwards, analytics requests in the form of queries could be realized and derive the necessary knowledge for supporting intelligent applications. In this paper, we define the concept of a Query Controller ( Q C ) that receives queries for analytics and assigns each of them to a processor placed in front of each data partition. We discuss an intelligent process for query assignments that adopts Machine Learning (ML). We adopt two learning schemes, i.e., Reinforcement Learning (RL) and clustering. We report on the comparison of the two schemes and elaborate on their combination. Our aim is to provide an efficient framework to support the decision making of the QC that should swiftly select the appropriate processor for each query. We provide mathematical formulations for the discussed problem and present simulation results. Through a comprehensive experimental evaluation, we reveal the advantages of the proposed models and describe the outcomes results while comparing them with a deterministic framework.
Web-Scale Multidimensional Visualization of Big Spatial Data to Support Earth Sciences—A Case Study with Visualizing Climate Simulation Data
Authors: Wang Sizhe , Li Wenwen , Wang Feng
Published: June 2017

The world is undergoing rapid changes in its climate, environment, and ecosystems due to increasing population growth, urbanization, and industrialization. Numerical simulation is becoming an important vehicle to enhance the understanding of these changes and their impacts, with regional and global simulation models producing vast amounts of data. Comprehending these multidimensional data and fostering collaborative scientific discovery requires the development of new visualization techniques. In this paper, we present a cyberinfrastructure solution—PolarGlobe—that enables comprehensive analysis and collaboration. PolarGlobe is implemented upon an emerging web graphics library, WebGL, and an open source virtual globe system Cesium, which has the ability to map spatial data onto a virtual Earth. We have also integrated volume rendering techniques, value and spatial filters, and vertical profile visualization to improve rendered images and support a comprehensive exploration of multi-dimensional spatial data. In this study, the climate simulation dataset produced by the extended polar version of the well-known Weather Research and Forecasting Model (WRF) is used to test the proposed techniques. PolarGlobe is also easily extendable to enable data visualization for other Earth Science domains, such as oceanography, weather, or geology.
A Novel Benzoquinone Compound Isolated from Deep-Sea Hydrothermal Vent Triggers Apoptosis of Tumor Cells
Authors: Xu Chenxi , Sun Xumei , Jin Min , Zhang Xiaobo
Published: June 2017

Microorganisms are important sources for screening bioactive natural products. However, natural products from deep-sea microbes have not been extensively explored. In this study, the metabolites of bacteriophage GVE2 -infected (Geobacillus sp. E263 virus) thermophilic bacterium Geobacillus sp. E263, which was isolated from a deep-sea hydrothermal vent, were characterized. A novel quinoid compound, which had anti-tumor activity, was isolated from the phage-challenged thermophile. The chemical structure analysis showed that this novel quinoid compound was 2-amino-6-hydroxy-[1,4]-benzoquinone. The results indicated that 2-amino-6-hydroxy-[1,4]-benzoquinone and its two derivatives could trigger apoptosis of gastric cancer cells and breast cancer cells by inducing the accumulation of intracellular reactive oxygen species. Therefore, our study highlighted that the metabolites from the phage-challenged deep-sea microbes might be a kind of promising sources for anti-tumor drug discovery, because of the similarity of metabolic disorder between bacteriophage-infected microbes and tumor cells.