bluuebunny/crossref_metadata_2025 huggingface dataset:
Efecto de la poda sobre la calidad de frutos DE Vitis vinifera L. Sauvignon Blanc durante la maduración
Authors: Walteros Ingrid , Molano Deisy , Almanza-Merchán Pedro
Published: April 2018

La producción y calidad de la uva para elaboración de vino, se modifican con las prácticas culturales que se realizan en el viñedo. La poda es una de las prácticas que buscan mejorar la calidad final de mostos y vinos. Con la investigación se buscó conocer el efecto de tres tipos de poda (corta, larga y mixta) en la evolución de los componentes de la calidad, durante la maduración de frutos de Vitis vinifera L. var. Sauvignon Blanc, en el municipio de Sutamarchán-Boyacá, Colombia. Se recolectaron, cada quince días, aleatoriamente 20 bayas, desde el inicio del envero, hasta la maduración, para determinar el comportamiento de los sólidos solubles totales (SST), acidez total titulable (ATT) e índice de madurez técnica (IMT). Con la poda larga se alcanzó el mayor contenido de azúcares (22,76ºBrix) y el más alto IMT (3,42), la acidez total titulable (ATT) disminuyó con el desarrollo del fruto, obteniéndose en el momento de la vendimia una acumulación de ácidos orgánicos de 6,88 g L-1. Los tratamientos no afectaron el contenido de SST; mas si hubo diferencias significativas entre ATT e IMT. La poda larga produjo los frutos con los valores más adecuados, de calidad (SST, ATT, IMT) requeridos para la elaboración de vinos tropicales de la variedad Sauvignon Blanc, en la localidad del estudio.
Oviposición y aspectos biológicos del huevo de Oncometopia clarior (Hemiptera: Cicadellidae) en Dioscorea rotundata
Authors: Alvarez Deivys , Arroyo Wendy , Pérez Antonio , Beltrán Javier
Published: April 2018

Los Cicadellidae son insectos de importancia agrícola por ser vectores de fitopatógenos. Oncometopia clarior es responsable de la transmisión del Virus del mosaico suave del ñame que causa pérdidas en la producción en los cultivos de ñame. Este estudio describe la biología del huevo del cicadélido Oncometopia clarior. Se recolectaron hembras adultas en cultivos de ñame y se confinaron en jaulas de oviposición con plantas de Dioscorea rotundata, se retiraron las hojas con posturas y se incubaron los huevos. Se encontró que la oviposición ocurre en el envés de las hojas y de forma endofítica. Los huevos fueron puestos en filas de 4 a 25 y cubiertos con brochosoma. Su tamaño fue de 2,39 mm ± 0,1197 de longitud y 0,53 mm ± 0,062 de ancho, son de forma alargada con extremos redondeados. La duración del periodo embrionario fue de 6,58 ± 0,98 días.
Potencial de daño de Anthonomus grandis Boheman en el cultivo del algodonero en el sinú medio
Authors: Martínez Lorena I. , Mejía Quintana Jorge Eliecer , Fernández Herrera Claudio Rodolfo
Published: April 2018

Para determinar el efecto del potencial de daño de Anthonomus grandis Boheman, se realizó el presente trabajo bajo condiciones de campo (28°C., HR 80% y PP media anual de 1200 mm). Se evaluó el potencial de daño del picudo del algodonero introduciendo parejas vírgenes del insecto en jaulas de 3 m x 2 m x 2 m, elaboradas en madera y tela de malín. Diariamente se revisaron cada una de las plantas enjauladas y se removieron los botones con daño de oviposición. Se encontró que una hembra oviposita 178 huevos en un período de 27,33 días y puede ocasionar la pérdida de igual número de botones.
Efecto del bencilaminopurina en medio liquido sobre la tasa de multiplicación in vitro en Dioscorea alata
Authors: Polo Santos Janer Miguel , Quintero Irma , Jarma Orozco Alfredo De Jesús
Published: April 2018

El ñame (Dioscorea sp.) es una planta de importancia nutricional y económica en regiones tropicales y subtropicales y se caracteriza por poseer tubérculos ricos en carbohidratos y vitaminas. El trabajo de investigación se realizó en el Laboratorio de BiotecnologíaVegetal de la Universidad de Córdoba durante el año 2001, con el objetivo de determinar el efecto de bencilaminopurina (BAP) adicionada al medio líquido en agitación constante (120 rpm), sobre la tasa de multiplicación in vitro del ñame ( Dioscorea alata ). Se utilizó un diseño completamente al azar con 8 repeticiones, los tratamientos consistieron en tres concentraciones de BAP (0.1, 0.2, y 0.3 mg L^-1) y un testigo al que no se adicionó BAP. A los 30 días después del establecimiento in vitro , se evaluó el número de nudos, hojas y raíces por explante (segmento nodal). Los resultados mostraron que no se presentaron diferencias estadísticas (P < 0.05) entre las dosis evaluadas, registrándose una tasa de multiplicación media de 2.5 nudos por planta, valores muy semejantes a las tasas obtenidas en multiplicación in vitro del ñame en medio sólido sin reguladores de crecimiento. Sin embargo, se observó un mayor desarrollo fisiológico en las hojas y longitud del tallo en el medio líquido sin reguladores de crecimiento. Con esto surge la alternativa de aplicar potencialmente la propagación clonal masiva del ñame sin agente gelificante en el medio de cultivo, lo que, sin duda bajaría los costos de producción significativamente.
Caracterización bromatologíca de la berenjena (Solanum melongenaL.) en el Departamento de Córdoba
Authors: García Emith , Hernández Elvis , De Paula Claudia Denise , Aramendiz Tatis Hermes
Published: April 2018

Se valoró la composición bromatológica de ocho (8) líneas de berenjena (L006, L007, L008, L012, L014, L015, L016 y L019), de excelentes atributos agronómicos, a las que se les determinó humedad, cenizas, proteína total, extracto etéreo y fibra cruda, utilizando los métodos de la A.O.A.C. 930. 15/90, 942. 05/90, 955. 04/90, 920. 39/90 y 962. 09/90, respectivamente. Los carbohidratos totales, se calcularon por diferencia entre el 100% y los demás componentes, excepción de la fibra. En las cenizas, se cuantificó los minerales hierro, fósforo, calcio, sodio y potasio. El mineral de más alto nivel fue el potasio, con una media de 206,21 mg, igualmente se encontraron altas proporciones de calcio y sodio con unas medias de 68,62 mg y 58,22 mg respectivamente. El hierro al igual que el fósforo, acusaron guarismos muy bajo en todos los genotipos, excepto en la línea LO14, que registró valores por encima de los 15.00 mg. Los genotipos de mayores ventajas a nivel nutritivo son las líneas L006, L007, L012, L014 y L016; que asociados con sus bondades agronómicas, constituyen genotipos con potencialidad de comercialización en el mercado nacional.
Nematodos fitoparasitos asociados al cultivo de papaya (Carica papaya L.) en Córdoba
Authors: Espinosa Manuel , Fuentes Ketty , Jaraba Navas Juan De Dios , Lozano Triviño Zayda
Published: April 2018

El presente trabajo tuvo como objetivo identificar los nematodos fitoparasitos asociados al cultivo de papaya ( Carica papaya L) en el departamento de Córdoba y correlacionar las características edafológicas con la presencia de los mismos. Se tomaron muestras de raíces y suelo rizosférico en los municipios de Tierralta, Valencia, Montelíbano, Montería y Lorica, de las que se obtuvieron los diferentes estadíos. De las muestras de suelo se evaluaron el pH, CE, MO y textura. Se evaluaron variables morfológicas y morfométricas para determinar los géneros y las especies. Se encontraron los géneros Paratylenchus , Xiphinema, Helicotylenchus, Pratylenchus, Tylenchus, Ditylenchus, Trophurus, Aphelenchus, Psilenchus, Tylenchorhynchus, Criconemella, Hoplolaimus y Meloidogyne , con las especies; Meloidogyne javanica , M. incognita y M. arenaria. El pH de los suelos varió de 4.86 a 6.9; la CE de 0.097 a 1.4 dS m- 1; la MO de 1.2 a 3.1% y la textura del suelo fue arenosa, franca y franco arenosa. Las arenas oscilan del 45 al 86%, arcilla del 3 al 22% y limo del 10.9 al 47%. El análisis de correlación mostró que el contenido de arena esta correlacionado positivamente; mientras que el pH, la CE y la MO están correlacionados negativamente con la riqueza y el número de individuos de los nematodos fitoparasitos en el departamento de Córdoba. Los resultados permiten el reporte por primera vez de M. incognita, M javanica y M. arenaria afectando conjuntamente el cultivo de papaya en la Costa Caribe Colombiana.
Efectos de aplicación de métodos químicos y físicos para transformación industrial de pulpa de Níspero (Achras sapota L.) I. características fisico-quimicas
Authors: De Paula Claudia Denise , Pastrana Yenis , Lora Luis , Guardo Antonio
Published: April 2018

Fueron evaluados métodos de conservación como la pasterización, concentración, edulcoración y adición de conservante químico aplicables en tres variedades de pulpa de níspero (Achras sapota L . ) ; determinándose la influencia que cada uno de estos tuvo sobre las características fisicoquímicas. En esta investigación se utilizó un diseño completamente al azar con cuatro repeticiones para los análisis fisicoquímicos. En la etapa inicial se realizó una caracterización de la pulpa discriminándose en tres tipos según su color, determinándose igualmente los rendimientos de extracción. Las pulpas conservadas por los tratamientos antes mencionados, fueron empacadas en bolsas de polietileno en una cantidad de 250 g aproximadamente por bolsa, llevándose a almacenamiento a una temperatura ambiental entre 25 y 30°C. Se pudo concluir que a pesar de las diferencias en el color de las pulpas, las tres variedades estudiadas presentaron una composición química muy parecida y que el tratamiento de mejor respuesta para las variables estudiadas y con un mayor tiempo de conservación (45 días) fue el edulcorado.
Embriogénesis somática en tres cultivares de aguacate (Persea americana Mill.)
Authors: Suárez Padrón Isidro Elias , Litz Richard , Jaraba Navas Juan De Dios
Published: April 2018

Cultivos embriogénicos fueron inducidos a partir del nucelo de tres cultivares de aguacate en un medio de cultivo compuesto por las sales mayores B5 suplementado con las sales menores de Murashige y Skoog (MS), 0.41 ? M de picloram y (en mg L -1) tiamina HCl (0.4), myo-inositol (100), sacarosa (30.000) y TC-agar (8.000). Los tejidos fueron transferidos a medio de mantenimiento de MS con 0.41 ? M de picloram y (en mg L -1) tiamina HCl (0.4), myo-inositol (100), sacarosa (45.000) y TC-agar (8.000). La proliferación en medio líquido ocurrió en una modificación de MS con 15 mM NH 4NO3 y 30 mM KNO3 y 0.41 ? M de picloram y (en mg L-1) tiamina HCl (0.4), myo-inositol (100) y sacarosa (45.000). Los embriones somáticos desarrollaron en MS suplementado con (en mg L -1) sacarosa (30.000), myo inositol (100) y Gel Gro (6.000), y las plantas fueron recuperadas a partir de estos en MS3:1N suplementado con 1.0 ? M de benzyladenina y 10 ? M de ácido giberélico. Los resultados del estudio mostraron que no hubo diferencias estadísticamente (pr > 0.05) significativas entre los cultivares con relación a los porcentajes de inducción y diferentes estructuras embriogénicas producidas en medio de mantenimiento; sin embargo, si hubo diferencias significativas (pr < 0.001) con relación al número total de embriones somáticos desarrollados. Solo el cultivar ‘Vero Beach’SE2 desarrolló plantas a partir de los embriones somáticos, indicando que es posible recuperar clones de aguacate mediante el cultivo de tejidos nucelares en una técnica que puede utilizarse como una forma alternativa de conservación de germoplasma.
Top-Cited Articles In Medical Professionalism: A Bibliometric Analysis versus Altmetric Scores (Preprint)
Authors: Azer Samy A. , Azer Sarah
Published: April 2018

BACKGROUND

Citation counts of articles have been used by universities and funding bodies to measure scientific outcomes and assess suitability for grant applications. However, citation counts are not without limitations. With the rise of social media, altmetric scores may provide an alternative assessment tool.

OBJECTIVE

The aims of this study are to assess the characteristics of highly cited articles in medical professionalism and their altmetric scores.

METHODS

The Web of Science was searched for top-cited articles in medical professionalism, and the characteristics of each article were identified. The altmetric database was searched to identify report for each identified article. A model to assess the relationship between the number of citations and each of key characteristics as well as altmetric scores was developed.

RESULTS

No correlations were found between the number of citations and number of years since publication (p=0.192), number of institutes (p=0.081), number of authors (p=0.270), females in authorship (p=0.15), or number of grants (p=0.384). The altmetric scores varied from zero to 155, total= 806, median=5.0, (IQR=20). Twitter (54%) and Mendeley (62%) were the most popular altmetric resources. No correlation was found between the number of citations and the altmetric scores (p=0.661). To further assess these variables a model was developed using multivariate analysis; did not show significant differences across subgroups. The topics covered were learning and teaching professionalism, curriculum issues, professional and unprofessional behavior, defining and measuring professionalism. The articles were mainly published in Academic Medicine, Journal of the American Medical Association, Journal of General Internal Medicine, and Annals of Internal Medicine.

CONCLUSIONS

No correlation was found between citations and any of the article parameters. Altmetric scores of articles were not significantly correlated with citations. Highly cited articles were produced mainly by the United States, Canada, and the United Kingdom. The study reflects the emerging role of altmetric and social media in the dissemination of research. Future studies should investigate the specific features of highly cited articles and factors that reinforce distribution of research data among scholars and non-scholars.

CLINICALTRIAL

Not applicable.
The Effectiveness of Governance Mechanisms in Scenarios of Water Scarcity: The Cases of the Hydropolitical Complexes of Southern Africa and Jordan River Basin
Authors: De Queiroz Fábio Albergaria , Tiburcio James A. P.
Published: April 2018

In many regions of the world, the multiple uses of transboundary fresh water have been a critically important component for regional stability. This situation explains why, in many cases, water management has commonly become linked to national security concerns. But, in what intensity? In search for answers, we analyze the cases of Southern Africa and the Jordan River Basin due to their prevailing condition of hydrological stress. To verify the role played by governance mechanisms in accommodating the interests of riparian states, the Hydropolitical Complexes model was applied in a comparative perspective. Our findings suggest a trend towards cooperation in Southern Africa due to the successful institutionalization of management mechanisms capable of minimizing potential conflicts. In the Jordan Basin, however, the struggle for control of water resources has been a paramount feature in the maintenance of a tense and resilient non-cooperative framework among riparian countries.
Asociación de nuevas tecnologías de la información y la comunicación con obesidad en escolares de una unidad de medicina familiar
Authors: García Hernández Moisés Manuel , Osorio Granjeno Mónica Catalina
Published: April 2018

Objetivo: determinar la asociación del uso de nuevas tecnologías de la información y la comunicación (ntic) con la obesidad en escolares adscritos a una unidad de medicina familiar (umf). Métodos: se realizó un estudio analítico de casos y controles en escolares adscritos a la umf no. 33 del imss en la Ciudad de México, se calculó un tamaño de muestra (nivel de confianza 95%) de 95 escolares con sobrepeso u obesidad (casos) y 191 escolares sin sobrepeso u obesidad (controles). Se aplicó un cuestionario para identificar el número de horas que el escolar pasa frente a una pantalla, el contenido que ve y el tipo de tecnología que utiliza, así como factores sociodemográficos. Resultados: sí existe asociación entre el número de horas que un escolar pasa frente a una pantalla y el sobrepeso u obesidad (p= 0.000), la televisión es la nueva tecnología de la información y comunicación más utilizada (75% casos vs. 64% controles) y las caricaturas fueron el contenido más visto (53% casos vs. 67% controles). Conclusión: se demostró asociación entre el uso de ntic y la obesidad. Es importante promover estrategias que favorezcan la interacción entre el médico familiar, el escolar y el cuidador primario a fin de evitar el uso excesivo de ntic.
Clasificación de la enfermedad renal crónica y uso de la tasa de filtrado glomerular en una unidad de medicina familiar
Authors: Torres Pérez Manuel Elizafán , Pech Novelo Fausto , Zavala Rubio Juan De Dios , Martínez Castillo Edgar
Published: April 2018

Objetivo: clasificar la función renal en pacientes con diabetes mellitus tipo 2 (dm2) e hipertensión arterial mediante la determinación de la tasa de filtrado glomerular e identificar la frecuencia con la que médicos generales y especialistas en medicina familiar utilizan las fórmulas mdrd y ckd-epi. Métodos: estudio transversal descriptivo. Se revisaron expedientes clínicos de pacientes diabéticos e hipertensos de una unidad de medicina familiar (umf) en Ciudad Mante, Tamaulipas, México. Para determinar la muestra se utilizó la fórmula de poblaciones finitas. Mediante la revisión de expedientes se recabaron datos sociodemográficos y resultados de laboratorio registrados en el expediente, y se calculó la tasa de filtrado glomerular. Los datos fueron analizados mediante estadística descriptiva. Resultados: se analizaron 150 expedientes. Del total de la muestra 30 (20%) pacientes tenían diabetes, 63 (42%) tenían hipertensión arterial y 57 (38%) padecían ambas enfermedades. Al momento del estudio 10 (7.5%) pacientes tenían estratificación de la etapa renal. Después de calcular la tasa de filtración glomerular, se determinó que 84 (56%) se encontraban en estadio 1 de acuerdo con la clasificación de la Kidney Disease Outcomes Quality Initiative (kdoqui), 45 (30%) estaban en estadio 2, y 21 (14%) estaban en estadios avanzados de la enfermedad. Conclusiones: los resultados referidos muestran que existe un subdiagnóstico de la enfermedad renal. No se utilizan adecuadamente los recursos para estadificar pacientes con dm2 e hipertensión que presentan enfermedad renal.
La cuarta revolución química (1945-1966). De las sustancias a las especies químicas
Authors: Chamizo Guerrero José Antonio
Published: April 2018

Para su enseñanza, se reconstruye la historia de la química alrededor de 5 momentos revolucionarios, presentándose aquí únicamente el cuarto de ellos. Incorporando los instrumentos que contribuyeron a su establecimiento y las subdisciplinas derivadas, además de los conceptos desarrollados, las revoluciones químicas se caracterizan en términos de la noción kuhniana de «ejemplar» y no de «paradigma». Se reconoce, más allá de un dogma, la forma en que se consolidan diferentes entidades «ocultas o escondidas» muy importantes en la enseñanza de la química, como los átomos, las moléculas, los electrones o en este caso el espín. Asimismo, se traza el paso de las sustancias a las especies químicas.
Del laboratorio al juzgado. Enseñanza de las ciencias para el ejercicio forense
Authors: Sosa Reyes Ana María
Published: April 2018

La formación de profesionales con un perfil interdisciplinario como el del científico forense es un reto educativo que implica repensar los principios didácticos de disciplinas científicas con una identidad más claramente definida, como es el caso de la química. La construcción de un modelo de enseñanza ad hoc que incluya estrategias didácticas diseñadas para el contexto forense es, pues, tarea indispensable. En este trabajo se describe el diseño, la puesta en práctica y los resultados del Taller interdisciplinario para la resolución de casos forenses, una estrategia de enseñanza basada en la resolución de problemas que busca contribuir a la formación de científicos forenses y que, además, es botón de muestra del potencial que el tema forense tiene como un contexto propicio para la ensenanza de las ciencias.
Coherencia y congruencia en las representaciones utilizadas por estudiantes universitarios acerca de los estados de agregación
Authors: Cappannini Osvaldo , Espíndola Carlos
Published: April 2018

Existe una extensa lista de trabajos de investigación dedicados a identificar representaciones sobre estructura de la materia en personas pertenecientes a diferentes niveles en el sistema educativo. Uno de los objetivos de la educación, tanto secundaria como universitaria, es que los estudiantes aprendan a interpretar fenómenos macroscópicos en términos de modelos discretos y microscópicos. El modelo corpuscular resulta fundamental para poder explicar, por ejemplo, las diferencias entre estados de agregación de la materia, sus propiedades y los cambios, físicos o químicos, que experimentan. Las investigaciones realizadas muestran que los estudiantes aceptan fácilmente este modelo corpuscular y parte de la terminología que incluye, pero que no lo utilizan espontáneamente. En este trabajo se presenta una indagación sobre representaciones de estructura para los 3 estados de agregación en estudiantes universitarios y un análisis de la utilización conjunta de modelos, reflejando que también en este nivel, y para estudiantes de cursos introductorios de Química, el modelo discreto de la materia aceptado por la comunidad científica solo resulta dominante para gases pero no para sólidos y líquidos.
Yozgat İli Su Ürünleri Tüketim Alışkanlıklarının Belirlenmesi
Authors: Erdoğan SAĞLAM Naciye , SAMSUN Serap
Published: April 2018

Bu araştırma Yozgat ilinde yaşayan insanların balık
tüketim alışkanlıklarının ve tercihlerinin ortaya konması amacı ile
yapılmıştır. Veriler 2016 yılı içerisinde tesadüfi örnekleme yöntemine göre
17-67 yaş aralığında 270 kişi ile görüşülerek anket yolu ile elde edilmiştir.  Yozgat’ta yaşayanların %82’sinin balık
tükettiği görülmüştür. Balık tüketim tercihini %60,6 ile en yüksek oranda
sağlıklı ve dengeli beslenme oluştururken, tüketmeme nedenini ise % 57,1 ile en
fazla oranda balığı sevmeme oluşturmaktadır. Katılımcıların %97,7’si taze,
%1,3’ü dondurulmuş, %1 konserve ürünleri tercih ettikleri tespit edilmiştir. En
çok tüketilen su ürünü %94 ile hamsidir.
Influence of Glaze Solution Mixed with Rosemary Oil on the Oxidative Stability of Frozen Trout
Authors: EMİR ÇOBAN Özlem , GÜREL İNANLI Ayşe
Published: April 2018

In this study was investigated effects of glazing with different concentrations of rosemary oil on oxidative stability of frozen trout fillets. Frozen trout fillet at -25 °C were divided into four groups; The first group only water,  2nd group and 3rd group were glazed with the solution contained 1% and 5% rosemary oil, respectively. 4 th group nonglazed. All group were stored at -18 C for six monts and TVB-N, TBA, PV nad FFA analysese were performed montly.  According to results both 1% and 5% of rosemary oil were effective in controlling lipid oxidation and storage quality.
Hydrologiczne uwarunkowania morfogenezy wybranych erozyjnych form rzeźby równi zalewowej na przykładzie doliny Bugu
Authors: Ostrowski Piotr , Utratna Marta
Published: April 2018

The aim of the study was to analyze the relationship between hydrological conditions and morphogenesis of erosional landforms on the floodplain of the Bug river valley. It was found that forms such as side arms and oxbow lakes as a result of cyclical floods are subject to secondary erosion. The main reason for this phenomenon is the fact that they combine strings of overbank flow direction. In the case of ice storms, these forms take on the role of the main channel limiting the effects of floods.
Solvability conditions for mixed sylvester equations in rings
Authors: Chen Huaxi , Wang Long , Wang Qian
Published: April 2018

This paper has been motivated byWang and He [Q.W.Wang and Z.H. He,
Solvability conditions and general solution for mixed Sylvester equations.
Automatica, 49 (2013) 2713-2719] in which the authors consider some
solvability conditions for mixed Sylvester matrix equations. The paper also
considers the same problem in the setting of a regular ring. Using the
purely algebraic technique, we present some necessary and sufficient
conditions for the solvability to mixed Sylvester equations in rings.
Almost sure central limit theorems for m-dependent random variables
Authors: Miao Yu , Xu Xiaoyan
Published: April 2018

In the present paper, the almost sure central limit theorem for
them-dependent random sequence is established, which weakens the moment
conditions of Giuliano [10] for the stationary m-dependent sequence and gets
the same results with different methods.
Improvement of the accuracy in testing the effect in the cox proportional hazards model using higher order approximations
Authors: Bělasková Silvie , Fiserová Eva
Published: April 2018

Small-sample properties of the likelihood ratio test, the Wald test and the
score test about significance of the effect in the Cox proportional hazards
model for the right-censored and left-truncated data are investigated. These
are large-sample tests, and, therefore, these are only approximate tests and
they do not necessary maintain chosen significance level. Consequently, the
p-value can be inaccurate as well. Higher order approximations of the
likelihood function based on the Barndorff-Nielsen formula and the
Lugannani-Rice formula are used in order to improve the accuracy of
statistical inferences. The accuracy of these tests together with proposed
approximations are compared by means of simulations under conditions of
decreasing the sample size, and increasing proportion of right-censored and
left-truncated data in the Cox model with the exponential and the Weibull
distribution of the baseline hazard function. The results show that higher
order approximations based on the Lugannani-Rice and the Barndorff-Nielsen
formulas in combination with the Wald statistic improve the accuracy.
Boundary value problems for impulsive fractional differential equations in Banach spaces
Authors: Yang Shuai , Zhang Shuqin
Published: April 2018

This paper is devoted to studying the existence and uniqueness of solutions
to the boundary value problems for a impulsive fractional differential
equation in Banach spaces. The arguments are based upon the methods of
noncompact measure, Banach fixed point theorem and Krasnoselskii?s fixed
point theorem. Some examples are given to demonstrate the application of our
main results.
Connectedness of ordered rings of fractions of C(X) with the m-topology
Authors: Salehi A.R.
Published: April 2018

An order is presented on the rings of fractions S-1C(X) of C(X), where S is
a multiplicatively closed subset of C(X), the ring of all continuous
real-valued functions on a Tychonoff space X. Using this, a topology is
defined on S-1C(X) and for a family of particular multiplicatively closed
subsets of C(X) namely m:c: z-subsets, it is shown that S-1C(X) endowed
with this topology is a Hausdorff topological ring. Finally, the
connectedness of S-1C(X) via topological properties of X is investigated.
Modular best proximity and equilibrium pairs in free generalized games
Authors: Karamikabir Nasrin , Yaghoobi Farajollah
Published: April 2018

In this paper, we prove a fixed point theorem for ?-acyclic factorizable
multifunction. Some existence theorems of general best proximity pairs and
equilibrium pairs are presented in modular function spaces. Moreover, some
equilibrium theorems are established for free generalized n-person game.
The global dynamics of stochastic Holling type II predator-prey models with non constant mortality rate
Authors: Zhang Xinhong
Published: April 2018

In this paper we study the global dynamics of stochastic predator-prey models
with non constant mortality rate and Holling type II response. Concretely,
we establish sufficient conditions for the extinction and persistence in the
mean of autonomous stochastic model and obtain a critical value between
them. Then by constructing appropriate Lyapunov functions, we prove that
there is a nontrivial positive periodic solution to the non-autonomous
stochastic model. Finally, numerical examples are introduced to illustrate
the results developed.
Keynesian macroeconomic policy: Theoretical analysis and empirical evidence
Authors: Arestis Philip , Filho Fernando , Bittes Terra
Published: April 2018

Investment depends on subjective factors, such as expectations, conventions,
and confident animal spirits. In a context of economic instability and
crises, economic policy is the main source to support entrepreneurs?
expectations and investment. In this sense, macroeconomic policies are
capable of affecting effective demand and building a good institutional
environment, which is essential to keep the entrepreneurs? expectations
confident and promote their animal spirits. Given these propositions, this
contribution has two objectives. The first is to develop a Keynesian type of
macroeconomic policy able to stimulate investment and effective demand, and,
as a result, mitigate unemployment. The idea is to offer alternative
macroeconomic policy prescriptions in relation to the New Consensus
Macroeconomics one. This proposal aims to establish the role, according to
the Post Keynesian view, the logic of operation of each policy, and the
proper coordination among these Keynesian macroeconomic policies. The second
objective is to present, briefly, relevant empirical evidence of the Post
Keynesian macroeconomic policies.
Twin pregnancies concieved by assisted reproduction - early prediction of preterm birth
Authors: Pilic Igor , Plecas Darko , Dotlic Jelena , Plesinac Snezana
Published: April 2018

Background/Aim. Twins conceived by assisted reproduction techniques (ART) are the most susceptible for perinatal complications. The aim of this study was to examine the role of prenatal noninvasive fetal screening of the first and second trimester in prediction of delivery time of ART conceived twins. Methods. Prospective cohort study of all ART conceived twin pregnancies was conducted at the Clinic for Obstetrics and Gynecology, Clinical Center of Serbia, during the period from January 1, 2016 to December 31, 2017. In the 12th gestational week (GW) twins crown-rump lenght (CRL) and thickness nuchal translucency (NT) were measured ultrasonographically. Moreover, serum levels of beta subunit of human chorionic gonadotropin (? hCG) and pregnancy-associated plasma protein A (PAPPA) were assessed. In the 17th GW twins biparietal diameter (BPD), abdominal circumference (AC) and femur length (FL) were determined ultrasonografically. Additionally, ? hCG, alphafetoprotein (AFP), estriol (E3) and inhibin (INH) were measured in mothers serum. The GW of delivery was noted for each pregnancy. Results. Study included 100 pregnant women with mean age 35.44 ? 5.82. In the examined sample of ART conceived twins significantly more (51%) were delivered in term (? 35 GW) (p = 0.001). Delivery time correlated negatively with NT and first trimester ? hCG serum levels, while it correlated positively with FL of the smaller twin, second trimester ? hCG, AFP and E3 concentrations. According to obtained model for prediction of delivery time in ART conceived twin pregnancies based on first trimester diagnostic tests the significant predictors were PAPPA and ? hCG in the 12th GW as well as NT of the first larger twin. Nevertheless, reliability (sensitivity 50%?75%, specificity 30%?40%) of these diagnostic tests was moderate. Conclusion. Prenatal noninvasive fetal screening of the first and second trimester (ultrasonography and laboratory testing) can be used for prediction of delivery time of ART conceived twins.
Comorbidity as a factor of prognosis in patients with locoregionally advanced, inoperable squamocellular head and neck cancers
Authors: Kreacic Miroslav , Ursulovic Tamara , Gavrilovic Dusica
Published: April 2018

Background/Aim. Patients (pts) with tumors often have other diseases or conditions in addition to their index cancer which are generally referred to as comorbidities. Due to the fact that well known risk factors for development of squamocellular head and neck cancers (HNSCC) such as tobacco and alcohol abuse can also damage other important organs, pts with this type of cancer are suitable for analyzing the influence of comorbid conditions on prognosis of the disease. The aim of our work was to assess the prevalence of comorbidities, most frequent conditions and their prognostic impact on overall survival in this particular population. Methods. Between July 2002 and January 2007 in the Institute for Oncology and Radiology of Serbia, 100 pts with locoregionally advanced, inoperable HNSCC were initially treated with neoadjuvant chemotherapy regimen, cytarabine- 5 fluorouracil-cisplatinum. Median age of pts was 55 years, most of them (91%) were males with median number of applied chemo cycles being 4. Data on comorbidities were collected in prospective manner from various sources prior to the treatment. For grading of the severity of comorbid conditions, the Adult Comorbidity Evaluation 27 (ACE-27) comorbidity index was used with four degree scale (0?3). The average follow-up of pts was 15 months with range from 3?59 months. Results. Comorbidities were present in 69 (69%) pts, and 31 (39%) pts had no comorbidities prior to the treatment. Among pts with comorbid conditions prevailed alcoholics, active and former (71%), pts with chronic lung diseases (25%) and cardiovascular diseases (18%). Overall comorbidity score was defined according to the highest ranked single ailment, except in the case where two or more grade 2 ailments occured in different organ systems in which case the overall comorbidity score was designated as grade 3. Median overall survival for the whole group was 12 months. Median ACE-27 score was grade 1 (range 0?3) which was observed in 43 (43%) pts. Pts without comorbidities survived significantly longer than those with any kind of comorbidity (p = 0.0089), and the same was observed comparing survival of pts without comorbidities and those with comorbidity index 2 and 3 taken together (p = 0.0047). Results of other intergroup comparisons were of no statistic significance. Conclusion. Comorbidity is important prognostic variable in patients with locoregionally advanced HNSCC and should be properly assessed prior to therapy.
Understanding Primary Care Provider Attitudes and Behaviors Regarding Cardiovascular Disease Risk and Diabetes Prevention in the Northern Midwest
Authors: Harry Melissa L. , Saman Daniel M. , Allen Clayton I. , Ohnsorg Kris A. , Sperl-Hillen JoAnn M. , O’Connor Patrick J. , Ziegenfuss Jeanette Y. , Dehmer Steven P. , Bianco Joseph A. , Desai Jay R.
Published: April 2018

IN BRIEF We sought to fill critical gaps in understanding primary care providers’ (PCPs’) beliefs regarding diabetes prevention and cardiovascular disease risk in the prediabetes population, including through comparison of attitudes between rural and non-rural PCPs. We used data from a 2016 cross-sectional survey sent to 299 PCPs practicing in 36 primary clinics that are part of a randomized control trial in a predominately rural northern Midwestern integrated health care system. Results showed a few significant, but clinically marginal, differences between rural and non-rural PCPs. Generally, PCPs agreed with the importance of screening for prediabetes and thoroughly and clearly discussing CV risk with high-risk patients.
Effectiveness and Tolerability of Therapy With Once-Weekly Exenatide Versus Basal Insulin Among Injectable-Naive Patients With Type 2 Diabetes in a Real-World Setting in the United States
Authors: Loughlin Anita M. , Qiao Qing , Nunes Anthony P. , Ezzy Stephen M. , Yochum Laura , Clifford C. Robin , Gately Robert V. , Dore David D. , Seeger John D.
Published: April 2018

A propensity-matched cohort study compared injectable-naive patients with type 2 diabetes initiating exenatide once weekly (EQW) or basal insulin (BI), from 2012 through 2015, within a U.S. electronic health record database. A1C and weight were obtained as observed or multiply imputed values at baseline and quarterly for 1 year (Q1–Q4). Hypoglycemia and gastrointestinal symptoms were identified using diagnostic codes and clinical notes. EQW (n = 2,008) and BI (n = 4,016) cohorts were comparable at baseline (mean A1C and weight: EQW, 8.3% and 107.5 kg, respectively; BI, 8.5% and 107.9 kg, respectively). A1C declined in Q2: –0.69 and –0.50 percentage points for EQW and BI, respectively, with little further change in year 1. The EQW cohort lost 0.9 kg in Q1 and 1.9 kg by the end of the year; no weight change was observed in the BI cohort. Among EQW and BI cohorts, 25.9% and 14.3% achieved both glycemic control and weight loss, respectively. In the EQW and BI cohorts, the incidence of hypoglycemia per 1,000 person-years was 52.5 and 65.7, respectively. The incidence of nausea was greater among EQW relative to BI initiators (relative rate 1.18). EQW offers an advantage compared to BI in achieving glycemic control and weight loss and a lower incidence of hypoglycemia, but is associated with greater risk of gastrointestinal symptoms.
CRECHE: DESAFIOS E POSSIBILIDADES UMA PROPOSTA CURRICULAR PARA ALÉM DO EDUCAR E CUIDAR
Authors: Noffs Neide Aquino , M. Oliveira André Rita De Cássia
Published: April 2018

Este artigo realizado na linha de pesquisa Formação de Educadores, tem como objetivo verificar e compreender como a intencionalidade pedagógica na prática dos professores de creche e a capacidade inventiva e inteligente dos saberes dos bebês e crianças pequenas, alinhavados pela afetividade, são conceitos fundantes para a construção de um currículo a partir da escuta das múltiplas formas de linguagem, considerando a observação do que eles já sabem, os indicadores de desenvolvimento motor e cognitivo, e os Indicadores de Risco Psíquico para o Desenvolvimento Infantil (IRDIs). A metodologia é a qualitativa. Utilizamos a pesquisa bibliográfica e análise documental a luz das concepções de currículo Kramer (2011), Busnel (1997) e os documentos: Estatuto da Criança e do Adolescente (1990), Referenciais curriculares nacionais para a educação infantil (2009), “Práticas cotidianas na Educação Infantil - Bases para a reflexão sobre as orientações curriculares” (BRASIL, 2009), e entre outros. Esta pesquisa evidência a identificação de dois caminhos, o primeiro, diz respeito à prevalência pelo anonimato, pela generalização e, consequentemente, pelo esvaziamento da subjetividade. O segundo, mostra-se permeado por marcas simbólicas e sustentado por uma visão de currículo que prioriza a intencionalidade educativa na prática dos educadores de bebes e crianças pequenas, a partir da articulação dos  seus direitos em ambientes de aprendizagem, por meio da conscientização da necessidade da escuta para suas múltiplas formas de linguagem, o que possibilitaria transformar a “rotina” em “momentos” e aquele “espaço” em “ambiente”, não só de convivência, mas de aprendizagem entre seus atores.
CURRÍCULO, (AUTO)BIOGRAFIAS E DIFERENÇA: POLÍTICAS E POÉTICAS DO INCONTROLÁVEL NO COTIDIANO DA EDUCAÇÃO EM CIÊNCIAS
Authors: Pimentel-Junior Clivio , Carvalho Maria Inez Da Silva de Souza , Sá Maria Roseli Gomes Brito de
Published: April 2018

Neste artigo de posicionamento teórico-estratégico, por meio de uma agência pós-estrutural e pós-colonial, desenvolvemos uma argumentação crítica às bases teóricas da educação científica, focalizando a significação da identidade das disciplinas escolares como Natureza da Ciência. Para tanto, valendo-nos de (in)formações e quadros referenciais dos diversos espaços-tempos formativos vividos na graduação, na pós-graduação e na docência no ensino superior, postos em suspensão e desterritorializados em sentido (auto)biográfico, transitamos por políticas de sentido criadas em diferentes comunidades de enunciação, com vistas a problematizar e reativar os consensos hegemônicos produzidos em torno da defesa de tal significante. Nesse trajeto, argumentamos pela defesa do espaço do incontrolável, daquilo que não se pode banir do currículo e da educação em ciências, reavivando o sentido da poética como estruturante do fazer curricular. Defendemos que este modo de agência permite criar a identidade da ciência no currículo escolar como um lugar híbrido, marcado pela ausência de um discurso-mestre que possa validar uma dentre as múltiplas identidades criadas para a educação científica em seu acontecimento cotidiano, aguçando, assim, a participação dos sujeitos na luta política pelo poder de significar o currículo.
CONHECIMENTO NA PERSPECTIVA INTERCULTURAL: UM ESTUDO NO ENSINO SUPERIOR DE MÚSICA
Authors: Galizia Fernando Stanzione , Lima Emília Freitas de
Published: April 2018

O texto relata parte de investigação de doutorado já concluída, realizada no Programa de Pós-Graduação em Educação da Universidade Federal de São Carlos (UFSCar). Trata-se de uma pesquisa-intervenção que, amparada no paradigma qualitativo, insere-se no movimento de pesquisa da própria prática. Os dados foram construídos por meio de observações semiestruturadas em uma disciplina de Linguagem e Estruturação Musical, obrigatória para o curso de Licenciatura em Música da UFSCar. O referencial teórico do estudo tem como eixo principal as premissas da Didática Crítica Intercultural tal como formuladas por Candau (2012a), complementadas principalmente pelas ideias de McLaren (2000), Pérez Gómez (1994) e Santos (2014), entre outros autores. Neste artigo relatamos a forma como o conhecimento trabalhado na disciplina foi considerado. O ensino tradicional do conteúdo da referida disciplina, pertencente ao âmbito da Teoria Musical, frequentemente é encarado como despido de relações de poder e tratado como um conjunto de verdades absolutas, descolado do contexto social e histórico em que foi construído e sem significação para os alunos. Afastando-nos dessa concepção, a partir do referencial teórico adotado, procuramos demonstrar de que forma o conhecimento trabalhado na disciplina foi considerado, a partir das ideias de universalismo e relativismo; contextualização histórica e social do conhecimento científico; e da necessidade de reconhecimento de saberes sociais e conhecimentos cotidianos.
READING THEORIES AND READING COMPREHENSION
Authors: Ngabut Maria Novary
Published: April 2018

In this article several reading theories in their relations to reading comprehension teachers and lecturers of English need to know are reviewed. At the theory level, three other Models of Reading, namely Bottom-Up, Top-Down, and Interactive are previously discussed to the Schema Theory. In reviewing the reading comprehension, the history of reading instruction, types and purposes of reading, and cognitive reading skills are discussed. Finally, it reviews six variables involved in the comprehension of English texts.

Keywords: models of reading, schema theory, comprehension, background knowledge
IMPROVING SPEAKING ABILITY THROUGH STORY TELLING TECHNIQUE BY USING PICTURE SERIES
Authors: Purwatiningsih Purwatiningsih
Published: April 2018

This research was conducted to solve the students’ problems in speaking. It is to improve the students’ ability in speaking through story-telling technique by using picture series in terms of content and delivery of the story. The design of  this study was classroom action research which was conducted in two cycles consisting of six meetings. The subjects of this study were students of grade X-9 of MAN 2 Madiun in 2014/2015 academic year. The instruments to collect the data were observation checklists, field notes, speaking task measured using scoring rubrics, and questionnaire. The finding of the study indicated that the implementation of the technique was successful in improving the students’ speaking ability, since the criteria of success were achieved. Implementing the story-telling technique using picture series in teaching speaking encompasses several procedures: 1) understanding the narrative text carefully, 2) understanding grammar and difficult words, 3) employing dictions based on its context, 4) discussing the text in groups, 5) using own sentences to deliver story, 6) avoiding mistakes by having picture series, 7) understanding the message or social value of the text, and 8) giving reward to enhance motivation.

Keywords: story-telling, picture series, speaking ability
DEVELOPING INSTRUCTIONAL MATERIALS OF ENGLISH MORPHOLOGY FOR ENGLISH DEPARTMENT COLLEGE-LEARNERS
Authors: Umam Chothibul
Published: April 2018

The role of knowledge on English Morphology for the students of English Language Education (henceforth ELE) cannot be neglected. However, the preliminary observations done by the researcher during the instructional process of English Morphology at the State College for Islamic Studies (STAIN) Kediri Indonesia, for three academic years shows that most of the students still get difficulty in understanding the course content.  The researcher, therefore, is of the opinion that the instructional materials used in the classes need to be developed. The adaptation version of Borg & Gall (1983) model of R & D  covering preliminary observation, designing preliminary product, expert validation, product revision, field testing or try out, and revision to produce final product is used to develop an instructional material on English Morphology. The products mostly concern on 1) the course content, 2) the exercises, and 3) the level of language difficulty or word choice. The researcher expects that the final product of this study could be used as a handbook for the students in studying English Morphology.

Keywords: instructional materials, material development, English morphology
The Use of Grammar Translation Method in Teaching English
Authors: Elmayantie Catharina
Published: April 2018

This study aims to describe the patterns of Grammar Translation Method (GTM) and to know the reasons why the teachers used the method. Descriptive qualitative method was applied. The subjects were two English teachers at the seventh grade of SMP Negeri 1 Palangka Raya. It was used observation and questionnaires to collect the data. The data reduction, data display, and conclusion drawing were applied for data analysis. The findings show nine major patterns of GTM applied: (1) The classes were taught mainly in mother tongue; (2) the vocabulary was taught in the form of lists of isolated words; (3) the grammar provided the rules for putting words together; (4) it focused on the form and inflection of words; (5) the reading difficult classical texts were begun early; (6) it was little attention to the content of the texts; (7) the drills were exercises in translating; (8) it was little attention to pronunciation; and (9) it focused on accuracy. Meanwhile, the reasons of the teachers used the method are: (1) It is suitable for the students; (2) it helps the students comprehend the text; (3) it  improves the vacabulary; and (4) by using this method teaching-learning activities work well.
Developing materials of listening comprehension for the English department students
Authors: Qodir Abdul , Baehaqi Luqman , Miftah M. Zaini
Published: April 2018

This study was designed to develop appropriate listening materials based on the needs of users namely the teachers and the students of the English Department of IAIN Palangka Raya. The Research and Development (R&D) design was applied in this study. The research subjects were four listening instructors and the first-semester students (freshmen) who encountered fourteen meetings of this on-going semester. The findings showed that (1) the stages of the listening materials development such as needs survey, developing materials, expert and instructors validation, revision, try out of materials, revision, and final product; (2) the product is in the form of compact disc recorded materials, an instructor’s guide, and a students’ worksheet; (3) the product consists of 14 units for semester 1; (4) the criteria for selecting materials are based on the existing syllabus and the criteria such as language, content, style of delivery, length, speed of delivery, attractiveness, practicality, level of difficulty and effectiveness; (5) the materials are appropriate  for the students since they are relevant to the students’ need, interest, and level of  students’ English ability; and (6) the listening activities can improve the students’ motivation to learn English.