bluuebunny/crossref_metadata_2025 huggingface dataset:
Metodología utilizada en el diseño y construcción de un torno para el mecanizado de caucho
Authors: Pedroza Rojas Jesús Bethsaid , Moreno Uribe Andrés Mauricio
Published: November 2017

Este artículo presenta la metodología utilizada en el diseño de una máquina-herramienta para el mecanizado de caucho. Inicialmente se plantea un procedimiento para hallar el esfuerzo de corte del caucho y seguidamente se determina el adecuado esfuerzo de accionamiento (esfuerzo motor). Las anteriores características definen las dimensiones de los elementos constructivos del torno y ofrecen de manera directa los puntos de aplicación de las fuerzas y sus magnitudes en condiciones de servicio. Luego, se genera la geometría de la máquina, se discretiza y se simula bajo las cargas estimadas, haciendo uso de las herramientas SolidWorks® y ANSYS®, las cuales entregan resultados por medio de los trazados de esfuerzos, deformación y factor de seguridad. Por último, se presenta la construcción, pruebas iniciales y conclusiones del proyecto.
Juegos didácticos basados en realidad aumentada como apoyo en la enseñanza de biología
Authors: Restrepo Durán Deiner José , Cuello Montañez Libardo Segundo , Contreras Chinchilla Leidys del Carmen
Published: November 2017

Este artículo presenta el diseño y desarrollo de una aplicación móvil basada en Realidad Aumentada (RA), como herramienta didácticapara apoyar el aprendizaje del área de biología en estudiantes de básica primaria. La RA es una tecnología que permite combinar elementos del mundo real con elementos del mundo virtual en tiempo real, esto se hace mediante el uso de marcadores (imagen), que al ser enfocados con la cámara de un dispositivo móvil muestran contenidos multimediales (objetos 3D, texto, videos, entre otros). Para la realización de este proyecto se comenzó con la revisión de aplicaciones con RA en diversos entornos, luego se hizo un trabajo de campo entre docentes de básica primaria de la institución educativa seleccionada para el desarrollo de este proyecto, con el fin de identificar las áreas y temáticas más críticas, lo que condujo al diseño de una aplicación que permite apoyar la enseñanza del área de biología. Finalmente, se desarrolló la aplicación y se realizaron pruebas del prototipo entre estudiantes y docentes del colegio seleccionado. Con el desarrollo de este proyecto se pudo evidenciar que la RA como herramienta didáctica favorece el aprendizaje de las temáticas de la asignatura de biología, debido a que los estudiantes pueden aprender de manera interactiva y divertida, de tal manera que se logre captar su atención
Desarrollo de una máquina eólica de doble turbina de eje vertical para la generación de energía en un auto eléctrico
Authors: Roldán Castro Nelson Javier , Isaza Pareja Mario León , Olaya Dávila Mauricio
Published: November 2017

Se presentan los resultados del desarrollo e integración a un vehículo eléctrico de un prototipo de máquina eólica conformada por dos turbinas de eje vertical tipo Savonius soportadas en los extremos de sus ejes sobre un bastidor y un sistema de piñones, que además de mantenerlas sincronizadas, actúan como elevador de revoluciones para hacer funcionar un generador eléctrico y así extraer corriente eléctrica de ellas. La máquina eólica se instaló en la parte frontal de un prototipo de auto eléctrico diseñado especialmente; así, mientras el auto está en movimiento, el viento que golpea su parte frontal hace girar las turbinas generando corriente eléctrica; se recolectaron datos como velocidad, revoluciones de las turbinas, voltajes y amperaje para realizar el respectivo análisis y conocer el rendimiento del nuevo sistema eólico propuesto.
Revisión de literatura sobre ciudades inteligentes: una perspectiva centrada en las TIC
Authors: Maestre Góngora Gina Paola
Published: November 2017

Una ciudad inteligente es un área geográfica o territorio que se caracterizapor el uso intensivo de las tecnologías con el objetivo, de manera general, de mejorar la calidad de vida de los ciudadanos y el desarrollo sostenible de las ciudades bajo los supuestos de la colaboración y la innovación. El propósito de este artículo es presentar una revisión sistemática de literatura sobre el concepto y las características de las ciudades inteligentes publicados en la literatura científica, a partir de los cuales se hace énfasis en el rol de lastecnologías de información y comunicación, como un elemento fundamentalen la concepción e implementación de proyectos e iniciativas que inciden en el desarrollo exitoso de las ciudades inteligentes.
Medición del efecto látigo en redes de suministro
Authors: Romero Rodríguez Daniel , Aguirre Acosta Rubén , Polo Obregón Sugenis , Sierra Altamiranda Álvaro , Daza-Escorcia Julio Mario
Published: November 2017

La variabilidad de la demanda que se origina de un agente a otro en la cadena de suministro, aumenta o amplifica a medida que la señal se aleja del punto de origen; estas distorsiones se denominan Efecto Látigo. En este artículo se aborda una red de suministros multieslabón, que estima los intervalos de medición de la distorsión de la demanda de la red, de acuerdo a comportamientos extremos en el sistema que permiten diagnosticar su desempeño en términos de la amplificación de demanda. Para la investigación se aplican mediciones estáticas locales y globales del efecto látigo, en cada nivel de la red de suministros del juego de la cerveza de cuatro eta-pas; cada etapa o eslabón tiene múltiples nodos. Tradicionalmente, esta medición se ha realizado en un nodo a la vez, o en el caso de mediciones globales se asume un solo nodo en cada eslabón del sistema. La medición en este estudio se realiza a una red de sumi-nistro no lineal, en la que, a diferencia de casos anteriores, se tienen dos o más nodos por cada eslabón, lo que representa un avance en la medición del efecto látigo en sistemas de mayor complejidad.
Evaluación del efecto del envejecimiento del cemento asfáltico 80-100 modificado con lignina Daniella Rodríguez U, Cristian Rodríguez, Sindy R
Authors: Rodríguez U Daniella , Rodríguez Cristian , Ramírez Sindy , Flórez Cristhian
Published: November 2017

Esta investigación presenta un análisis de los resultados obtenidos de un asfalto modificado con lignina, un polímero abundante y de fácil acceso debido a su origen natural y su bajo costo de obtención el cual se crea mediante el proceso de fotosíntesis, compone el 30% de carbono orgánico no fósil y de un cuarto a una tercera parte de la masa seca de la madera, cumple con una función fundamental que se caracteriza por dar soporte estructural, impermeabilidad y resistencia contra agentes microbiológicos y estrés oxidativo. Esto hace que se convierta en un polímero muy resistente a la degradación. Para la mezcla modificada se utilizó un asfalto 80-100, y lignina producto de un desecho industrial papelero. El método empleado para esta investigación fue a partir de los ensayos de penetración y punto de ablandamiento (anillo y bola), consideradas como pruebas funda-mentales cuando se busca producir mezclas que presenten mayor temperatura de ablandamiento y menor temperatura de fractura. Con la lignina se utilizaron 6 porcentajes distintos; 5%, 10%, 15% y 20% en 400 gramos de asfalto 80-100. La lignina fue tamizada en el tamiz de 75 µm con el fin de obtener una mezcla homogénea y evitar grumos; el tiempo de mezcla fue de 30 minutos por cada porcentaje y la temperatura se manejó en un rango de 125°C a 135°C para prevenir la aparición de burbujas de aire.
Desarrollo del prototipo de un hidrogenerador eléctrico como alternativa de generación de energía limpia en zonas rurales
Authors: Vargas Javier Andrés , Velásquez Clavijo Fabián , Torres Gómez Camilo
Published: November 2017

El artículo sintetiza los resultados de la investigación titulada “Diseño e implementación del prototipo de un hidrogenerador eléctrico”, realizada en el grupo de investigación Macrypt de la Facultad de Ingenierías de la Universidad de los Llanos. El objetivo del proyecto consistió en diseñar e implementar un generador eléctrico a partir de la energía suministrada por una fuente hídrica. La metodología utilizada fue la de un proyecto factible y experimental. La potencia eléctrica generada por el prototipo fue equivalente a un kilovatio de potencia eléctrica y tensión de salida de 12 voltios, con una eficiencia del 95%. El prototipo fue puesto en funcionamiento en un cuerpo de agua cercano al municipio de Villavicencio (Meta), en la Vereda La Argentina con coordenadas geográficas: en latitud 4° 12’6.82” N y longitud 73°38’24.51”O a 546 m sobre el nivel del mar.
Compensación de la dispersión cromática presente en la fibra óptica utilizando métodos de ecualización
Authors: Santos Correa José Eduardo , Puerto López Karla Cecilia , Guevara Ibarra Dinael
Published: November 2017

En este trabajo se utilizó una herramienta computacional en el área de las telecomunicaciones para simular un sistema de comunicaciones ópticas, para evaluar y compensar las degradaciones sufridas a la señal debidas al efecto lineal de la dispersión cromática. Este efecto se produce debido a la variación del índice de refracción de un medio óptico con la longitud de onda, causando un ensanchamiento en los pulsos distorsionándolos de tal forma que se produzca la interferencia entre símbolos y limitando la velocidad de transmisión. Se utilizó una fibra óptica monomodo estándar la cual es un medio de transmisión capaz de transmitir gran cantidad de datos y con niveles de baja atenuación. Se simularon dos ecualizadores con el fin de compensar dichas degradaciones generadas por la dispersión cromática, los ecualizadores utilizados fueron: el ecualizador de alimentación hacia adelante y el conjugador de fase óptica, donde se corrigió con éxito la interferencia entre símbolos generada por la dispersión cromática.
Aplicación de nuevas propuestas multivariantes para medir la capacidad de un proceso
Authors: Verbel Aníbal , Herrera Roberto José , Maestre Karime
Published: November 2017

l índice de capacidad multivariante es de suma importancia para la evaluación del cumplimiento de las especificaciones de un producto, bajo las pautas exigidas en el diseño o por los requerimientos exigidos por el cliente. Actualmente se conocen un importante número de propuestas que pretenden evaluar eficientemente este indicador, pero no existe un consenso acerca de cuál es la mejor medida que permita evaluar las especificaciones de un producto con varias características de calidad. En este artículo se presenta un ejemplo de un producto farmacéutico en el cual se realiza la medición a cuatro  variables o características de  calidad,  en donde se desarrollan dos nuevas propuestas de indicadores multivariantes [1] y [2], que difieren algunos en los resultados, pero son similares en cuanto al concepto tradicional de calidad, en donde el paradigma existente es el cumplimiento o no de ciertas especificaciones de diseño.
Estudio de movimientos en la recolección manual de naranjas en caldas, colombia
Authors: Ovalle Castiblanco Alex Mauricio , Ocampo López Olga Lucía , Toro Galvis Juana María , Tabares Ángela Lucia , Reyes Figueroa Mauricio
Published: November 2017

En Colombia, el sector agrícola presenta dificultades en la integración de tecnologías, específicamente en la recolección manual; este es el caso de los cítricos en Caldas. Este estudio aplicó técnicas de Ingeniería de Métodos en la recolección manual de naranjas, en una finca localizada en Arauca, Caldas, con el fin de comprender la operación de recolección con miras a su estandarización. Los resultados permitieron determinar los elementos que conforman la operación; los movimientos realizados en el surco, las ramas, el árbol y los micromovimientos o therbligs; se identificaron además los movimientos eficientes e ineficientes que pueden ser empleados para el diseño de herramientas, la estandarización del proceso de recolección y la definición de normas de competencia laborales que son aspectos fundamentales para la competitividad del sector citrícola
Aplicación de la simulación discreta en el área de urgencias de una institución prestadora de servicios para disminuir perdida de pacientes
Authors: Mendoza Casseres Daniel Alfonso , González Conde Medardo , Corcho Martínez Ronald Andrés , Berdugo Alonso Alejandra
Published: November 2017

En la actualidad el área de urgencias es uno de los factores críticos del sector salud en Colombia, debido a la baja calidad del servicio suministrado y los problemas que en ella se presentan. En esta investigación se ha evaluado el comportamiento actual del área de urgencias de una Institución Prestadora de Servicios en el departamento del Atlántico. Se utilizó el Software de simulación Flexsim 7 para realizar las simulaciones discretas, con el propósito de obtener propuestas de mejora que permitan reducir el número de pacientes remitidos a otras entidades debido a la saturación del área y el efecto que genera sobre las finanzas de la organización. Se desarrolló un modelo de simulación donde se evaluaron diferentes escenarios como implementar el triage, asignar horarios de médicos y especialistas. Los resultados obtenidos muestran que se reduce el número de pacientes remitidos a otras instituciones, aumentando los ingresos financieros de la institución.
Evaluación de politicas de gestión de inventarios de medicamentos para un sistema multinivel y multiproducto en el hospital universitario de la samaritana (hus)
Authors: Otálora A Luis A. , Murillo H Leidy S. , Camacho O. Manuel Á. , Duarte F Edgar L. , Ahumada P Aura E.
Published: November 2017

En la investigación se analizó la eficiencia del proceso de gestión de inventarios en un sistema multinivel con M-proveedores, una bodega central (BC), y cuatro minoristas para la cadena de abastecimiento de medicamentos del Hospital Universitario de la Samaritana, con el objetivo de determinar las cantidades adecuadas de pedido desde la bodega central hacia sus proveedores y desde las farmacias auxiliares hacia la bodega central, minimizando el costo total de inversión en inventario y a su vez el porcentaje del número de días con unidades faltantes. De los resultados computacionales obtenidos en la validación inicial se concluye, que la aplicación del modelo propuesto genera un ahorro del 50% en los costos totales de inversión y 95% en el número de días con faltantes para las farmacias auxiliares.
Construcción e implementación de un estudio de caso como herramienta de apoyo a los procesos de aprendizaje en la asignatura de producción desde un enfoque constructivista
Authors: Arango Londoño Carlos Andrés , Hualpa Zúñiga Andrés Mauricio , Reina Moreno Diana Katherine , Roncancio Ávila Mitzy Natalia
Published: November 2017

El constructivismo es uno de los tres modelos de enseñanza cuya base se centra en que el estudiante construya su conocimiento basado en experiencias pasadas y en colaboración con sus compañeros, una de las metodologías usadas para conseguir tal fin es por medio del Caso de estudio. El presente artículo expone una experiencia educativa basada en el estudio de caso el cual permitió complementar el proceso de aprendizaje de estudiantes de ingeniería industrial en el área de gestión de la producción II. La metodología usada para la estructuración e implementación de la actividad constó de 4 fases: reconocimiento del sistema, construcción del caso, validación y, retroalimentación y ajustes. Resultados iniciales indicaron que el estudio de caso es significativo en el aprendizaje puesto que el 61,54% de los estudiantes aprobó los objetivos de aprendizaje propuestos.
A study of clinical pathological lesions and different modalities of treatment for diabetic foot
Authors: Khedkar Indira , Saparia Naresh
Published: November 2017

Background: Diabetes Mellitus is a heterogeneous primary disorder of carbohydrate metabolism characterized by chronic state of hyperglycaemia with multi-etiological factors that generally involve absolute or relative insulin deficiency or both. Diabetic foot is defined as the foot of diabetic patients with ulceration, infection and/or destruction of the deep tissues, associated with neurological abnormalities and various degrees of peripheral vascular disease in the lower limb. So, the aim of the study was to evaluate the role of various surgical interventions like debridement, minor/major amputations in the management of diabetic foot.Methods: We have included the study of total 60 patients with foot lesion. Patients with Diabetes mellitus with lesions of foot i.e. ulcer, blister. cellulites, abscess and gangrene, presenting to the department of Surgery were treated by different types of treatment. Data analysis was done by appropriate statistical tests (descriptive analysis, chi-square test).Results: 13.33% patients underwent toe amputation, 8.88% patients had below knee amputation, 33.33% patients had debridement followed by dressing, 31.12% patients had skin grafting and 13.33% patients had incision and drainage.Conclusions: This underlines the importance of patient education regarding prophylactic foot care. Patient mortality and morbidity can be reduced by prophylactic foot care, sugar control, proper surgical treatment, regular follow-up of high risk patient, suitable administration of antibiotics.
Case series on the on the onset of transient hypo-parathyroidism after thyroidectomy
Authors: Rajendran Kannan , Kumar S. Saravana , Smile Robinson
Published: November 2017

Background: Surgery for thyroid disorders is the common operation in general surgery and total thyroidectomy is widely performed both for carcinoma as well as benign bilateral diseases of the thyroid and the most common complication is transient hypocalcaemia. A preliminary study was conducted to assess the risk factors for transient hypocalcaemia in our hospital.Methods: This was a prospective observational study conducted from February 2013 to April 2014 at the Mahatma Gandhi Medical College and Research Institute, Pondicherry and have included all patients undergone any type of thyroid surgery with a normal pre-operative serum calcium level. After initial clinical assessment, blood samples were drawn for estimation of thyroid function and serum calcium and albumin. Postoperative hypocalcemia was assessed by eliciting Chovstek’s and Troussea’s sign and biochemically estimating serum calcium and albumin at 6,24, and 24 hours intervals and 1st and 3rd months during follow-up. The risk factors involved are also studied like sex, age, type of thyroidectomy, identification of parathyroid, Identification of recurrent laryngeal nerve and their histology.Results: A total of 50 patients who underwent thyroidectomy were included in the study. The hypocalcemia occurred in 28% of patients studied showed that 66.7% of patients developed hypocalcemia at 48-72 hours. There was no statistical significance for the parameters of age or gender, benign and malignant conditions of thyroid. The analysis of type surgery performed showed a significant number of patients developing transient hypocalcaemia after near or total thyroidectomy (p-0.002).Conclusions: The present study, though consisted of a small group of patients has shown that transient hypocalcaemia after near or total thyroidectomy occurs in early post-operative days. Hence, on an average 2-5 days of hospital stay is mandatory. Near total or total thyroidectomy is a risk factor. Early diagnosis and replacement with calcium intra-venous reduce the morbidity and mortality of hypocalcaemia.
Quantitative Structure – Pharmacokinetics Relationships for Plasma Protein Binding of Basic Drugs
Authors: Zhivkova Zvetanka Dobreva
Published: November 2017

Purpose. Binding of drugs to plasma proteins is a common physiological occurrence which may have a profound effect on both pharmacokinetics and pharmacodynamics. The early prediction of plasma protein binding (PPB) of new drug candidates is an important step in drug development process. The present study is focused on the development of quantitative structure – pharmacokinetics relationship (QSPkR) for the negative logarithm of the free fraction of the drug in plasma (pfu) of basic drugs. Methods. A dataset includes 220 basic drugs, which chemical structures are encoded by 176 descriptors.  Genetic algorithm, stepwise regression and multiple linear regression are used for variable selection and model development. Predictive ability of the model is assessed by internal and external validation.  Results. A simple, significant, interpretable and predictive QSPkR model is constructed for pfu of basic drugs. It is able to predict 59% of the drugs from an external validation set within the 2-fold error of the experimental values with squared correlation coefficient of prediction 0.532, geometric mean fold error (GMFE) 1.94 and mean absolute error (MAE) 0.17. Conclusions. PPB of basic drugs is favored by the lipophilicity, the presence of aromatic C-atoms (either non-substituted, or involved in bridged aromatic systems) and molecular volume.  The fraction ionized as a base fB and the presence of quaternary C-atoms contribute negatively to PPB. A short checklist of criteria for high PPB is defined, and an empirical rule for distinguishing between low, high and very high plasma protein binders is proposed based. This rule allows correct classification of 69% of the very high binders, 71% of the high binders and 91% of the low binders in plasma. This article is open to POST-PUBLICATION REVIEW. Registered readers (see “For Readers”) may comment by clicking on ABSTRACT on the issue’s contents page.
Assessment of Predicted Rate and Associated Factors of Dabigatran-induced Bleeding Events in Malaysian Patients with Non-Valvular Atrial Fibrillation
Authors: Beshir Semira Abdi , Yap Lok Bin , Sim Szyuin , Chee Kok Han , Lo Yoke Lin
Published: November 2017

Purpose: To assess the predicted rate and the factors associated with bleeding events among patients with non-valvular atrial fibrillation (NVAF) receiving dabigatran therapy. Methods: This retrospective cohort study includes adult patients of two tertiary hospitals in Malaysia. Potential study subjects were identified using pharmacy supply database or novel oral anticoagulant (NOAC) registry. Demographics, clinical data and laboratory test results were extracted from the medical records of the patients or electronic databases. The main outcome measure is the occurrence of a bleeding event. Bleeding events were classified into major bleeding, clinically relevant non-major bleeding, or minor bleeding, according to the International Society on Thrombosis and Haemostasis criteria. We consider clinically relevant non-major bleeding events or major bleeding events as clinically relevant bleeding events. An occurrence of any bleeding event was recorded from the initiation of NOAC therapy until the death of a patient, or the date of permanent discontinuation of NOAC use, or the last day of data collection. The predicted rate of dabigatran-induced bleeding events per 100 patient-years was estimated. Results: During a median follow-up period of 18 months, 73 patients experienced 90 bleeding events. Among these patients, 25 including 4 fatal cases, experienced major bleeding events. The predicted rate per 100 patient-years of follow-up of any bleeding events was 9.0 [95% CI 6.9 to 11.1]; clinically relevant bleeding events 6.0 [95% CI 4.8 to 8.3], and major bleeding events 3.0 [95% CI 1.9 to 4.2]. The independent risk factor for clinically relevant bleeding events is prior bleeding. While prior bleeding or congestive heart failure is linked with major bleeding events. Conclusions: The predicted rate for dabigatran-induced major bleeding episodes is low but these adverse events carry a high fatality risk. Preventive measures should target older patients who have prior bleeding or congestive heart failure. This article is open to POST-PUBLICATION REVIEW. Registered readers (see “For Readers”) may comment by clicking on ABSTRACT on the issue’s contents page.
Ciprofloxacin does not Prolong the QTc Interval: A Clinical Study in ICU Patients and Review of the Literature
Authors: Heemskerk Charlotte , Woldman Evelien , Pereboom Marieke , Van der Hoeven Ruud , Mantel-Teeuwisse Aukje , Van Gemeren Claudia , Becker Matthijs Lambertus
Published: November 2017

Purpose. Ciprofloxacin may prolong the QT interval and increase the risk of Torsade de Pointes (TdP). Intravenous administration of ciprofloxacin in patients with additional risks may elevate the risk of QTc interval prolongation. We prospectively assessed whether intravenous ciprofloxacin prolongs the QT interval in patients with additional co-morbidities and risk factors. We also reviewed the literature on the QT prolonging effect or TdP inducing effect of ciprofloxacin. Methods. ICU Patients who were treated with intravenous ciprofloxacin as part of their therapy were recruited. ECG was recorded within 60 min before start and in the last 30 min of 1 h infusion, or within 30 min after the end of ciprofloxacin infusion. QT interval was corrected for the heart rate using both Bazett’s and Fridericia’s formula. The changes were analyzed using the paired Student’s t-test. Results. Ten patients were included in the study (average age 74-y, 6 males). The average baseline QTc interval corrected with Bazett’s formula was 448 ms that was shortened during or after ciprofloxacin infusion by 3 ms and 2 ms based on Bazett’s  (p=0.67) and Fridericia’s (p=0.68) formula, respectively. No observational study  or cohort study thus far has shown that ciprofloxacin has a QT prolonging effect or increases the risk of TdP or (cardiovascular) mortality.  Conclusion. Based on our results and the results of previous studies, it is unlikely that ciprofloxacin has a clinically relevant QT prolonging effect or an increased risk of TdP. This article is open to POST-PUBLICATION REVIEW. Registered readers (see “For Readers”) may comment by clicking on ABSTRACT on the issue’s contents page.
CRESCIMENTO E PRODUTIVIDADE DE MILHO EM DIFERENTES ÉPOCAS DE PLANTIO, NOS TABULEIROS COSTEIROS DE ALAGOAS
Authors: MORAIS RICARDO BARBOSA GOMES , LYRA GUILHERME BASTOS , SANTOS LEKSON RODRIGUES , CAVALCANTE JÚNIOR CONSTANTINO ANTÔNIO , CARVALHO ANDRÉ LUIZ , LYRA GUSTAVO BASTOS , SOUZA JOSÉ LEONALDO
Published: November 2017

RESUMO – Identificar a época ideal para o cultivo do milho é essencial quando se almeja alta produtividade. Porém, monitorar o crescimento e desenvolvimento da cultura requer práticas que exijem tempo e que são muitas vezes destrutivas. A modelagem de crescimento é uma técnica que fornece dados precisos mais rapidamente a respeito da resposta da cultivar ao ambiente. Objetivou-se analisar os modelos logístico e pico-log normal para a estimativa da altura das plantas e índice de área foliar, respectivamente, e determinar a melhor época de semeio para a cultura do milho, na região dos Tabuleiros Costeiros de Alagoas. Foi utilizada a cultivar AL Bandeirante, semeada em blocos casualizados, em diferentes épocas: 28/06 (E1), 08/07 (E2), 18/07 (E3) e  28/07 de 2013 (E4). Ambos os modelos apresentaram ajustes significaticos (p < 0,01), gerando coeficientes de determinação máximos superiores a 0,912. O coeficiente de concordância de Willmott indicou elevada aproximação (0,999) entre os valores estimados e os observados. O período que proporcionou o melhor rendimento agrícola para a cultura do milho foi em 8 de julho. Os modelos mostraram-se eficientes em representar o crescimento da cultura em função dos graus-dias acumulados. Palavras-chave: graus-dia, modelagem, Zea mays L.MAIZE GROWTH AND YIELD OVER DIFFERENT PLANTING PERIODS IN COASTAL PLAINS OF ALAGOAS, BRAZILABSTRACT – Identify the ideal time for growing maize is essential when the objective is high productivity. But monitoring the culture growth and development requires practices that demand time and are often destructive. The growth modeling is a technique that provide accurate data more quickly about the response of the plant variety to the environment. The objective of the present work was analyze the logistic models and normal peak-log to estimate plant height and leaf area index, respectively, and determine the best time to sow maize in the region of the costal plains of Alagoas, Brazil. It was used the cultivar AL Bandeirante planted in randomized blocks at different times: 28/06 (E1), 08/07 (E2), 18/07 (E3) and 28/07 2013 (E4). Both models showed significaticos adjustments (p <0.01), generating maximum correlation coefficients greater than 0.912. The Willmott coefficient of agreement indicated high approximation (0.999) between the estimated and observed. The period that provided the best crop yield for corn was on 8 July . The models were effective in representing the growth of culture on the basis of accumulated degree-days.Keywords: degree-days, modeling, Zea mays L.
POTENCIAL DE LINHAGENS ORIUNDAS DE POPULAÇÕES DE MILHO BRAQUÍTICO PARA OBTENÇÃO DE HÍBRIDOS
Authors: SAITO BELISA CRISTINA , ANDRADE JOÃO ANTÔNIO DA COSTA
Published: November 2017

RESUMO - O objetivo do trabalho foi a identificar linhagens com alta capacidade de combinação visando o desenvolvimento de híbridos simples adaptados à condição de elevada densidade populacional de plantas. Treze linhagens originadas de duas populações de milho braquítico foram cruzadas seguindo o esquema de dialelo parcial (6x7). Os híbridos simples foram avaliados em duas safras (primeira e segunda safras). Os efeitos da interação entre as capacidades gerais de combinação (CGC) e safras foram diferentes para rendimento de grãos apenas para linhagens Isanão-VD1, enquanto que para a altura de plantas, altura de espigas e acamamento mais quebramento os efeitos da interação CGCs x safras foram diferentes para ambos os grupos de linhagens. Levando em consideração apenas o rendimento de grãos, os melhores híbridos são esperados entre as linhagens IVF1-5 e IVF1-10 da população Isanão VF1 e IVD1-1 e IVD1-2 da população Isanão-VD1. Considerando-se todos os caracteres, as linhagens promissoras para a primeira safra são IVF1-6, IVD1-1 e IVD1-5, e para a segunda safra as linhagens são IVF1-10, IVD1-8 e IVD1-9. Os híbridos mais adequados são IVF1-10 x IVD1-5 para primeira safra e IVF1-10 x IVD1-8 e IVF1-10 xIVD1-9 para a segunda.Palavras-chave: dialelo parcial, capacidade geral de combinação, capacidade específica de combinação.POTENTIAL OF INBRED LINES DERIVED FROM BRACHYTIC MAIZE POPULATIONS FOR OBTAINING HYBRIDSABSTRACT - The objective of this study was to identify parents with high combining ability aiming at the development of outstanding hybrids. Thirteen inbred lines originated of two brachytic maize populations were crossed following the partial diallel (6x7) scheme. The single-cross hybrids were evaluated in two crop seasons (regular crop and second crop). The effects of interaction general combining abilities (GCAs) x seasons were different for yield only for lines of Isanão-VD-1, while for plant height, ear height and stalk lodging and breaking, the effects of interaction GCAs x seasons were different for both groups of lines. Taking into account only the grain yield, the best hybrids are expected between the inbred lines IVF1-5, and IVF1-10, of the population Isanão-VF1 and IVD1-1 and IVD1-2 and IVD1-5 of the population Isanão-VD1. Considering all the traits, the inbred lines promising for the first crop are IVF1-6, IVD1-1 and IVD1-5 and for the second crop are the inbred lines IVF1-10, IVD1-8 and IVD1-9. The most suitable hybrids are IVF1-10 x IVD1-5 for the first crop and IVF1-10 x IVD1-8, and IVF1-10 xIVD1-9 for second crop.Keywords: partial diallel, general combining ability, specific combining ability.
TRATAMENTO DE SEMENTES DE MILHO PARA CONTROLAR Dichelops melacanthus EM DIFERENTES TIPOS DE SOLO
Authors: BRUSTOLIN CARLOS , NEVES PEDRO MANUEL OLIVEIRA JANEIRO , BIANCO RODOLFO , BORTOLOTTO ORCIAL CEOLIN
Published: November 2017

RESUMO – O tratamento de sementes (TS) é a principal técnica empregada para o controle de Dichelops melacanthus (Hemiptera: Pentatomidae) em milho. Entretanto, acredita-se que a eficiência desta estratégia pode ser influenciada pelo tipo de solo no qual a lavoura é cultivada. Desse modo, este trabalho comparou a eficiência do TS dos inseticidas [tiametoxam e imidacloprido + tiodicarbe] em relação a duas testemunhas (com infestação e sem infestação) em quatro tipos de solo: Latossolo Vermelho distroférrico (LVdf); Latossolo Vermelho Amarelo arenoso (LVA arenoso); Latossolo Vermelho Amarelo argiloso (LVA argiloso) e Latossolo Vermelho distrófico (LVd). De forma geral, ambos os TS reduziram os danos da praga em todos os tipos de solo, quando comparados às plantas infestadas com D. melacanthus e sem TS. Por outro lado, o pior desempenho de ambos os TS foi observado no LVA arenoso, em que as plantas apresentaram menor comprimento de espiga e menor produtividade. Este estudo demonstrou que a eficiência do TS com tiametoxam, assim como imidacloprido + tiodicarbe, é afetada pelo tipo de solo. Desse modo, maiores cuidados devem ser tomados no cultivo de lavouras de milho em regiões com solos arenosos, e a adoção de estratégia complementar pode ser necessária.Palavras-chave: percevejo-barriga-verde, pragas do milho, pragas iniciais, neonicotinoides, adsorção de inseticidas.SEED CORN TREATMENT FOR Dichelops melacanthus CONTROL IN DIFFERENT SOIL TYPESABSTRACT - The seed treatment (ST) is the main tool used to control Dichelops melacanthus (Hemiptera: Pentatomidae) in maize fields. However, the soil type in which the plants are developed probably influences the efficiency of this strategy. In this sense, this study aimed to evaluate the performance of two insecticides (ST) [thiamethoxam (52.5 g.i.a); imidacloprid + thiodicarb (45 + 135) g.i.a] in relation to control (infested and non-infested plants) for D. melacanthus control in four types of soil: Dystroferric Red Latosol (DRL), sandy Red-Yellow Latosol (sandy RYL); clay Red-Yellow Latosol (clay RYL); and dystrophic Red Latosol (dystrophic RL). In general, ST reduced the pest damage in all soil types. In the other hand, the development plants in sandy RYL were hampered, showing a shorter length of ear and lower yield in both ST. This study showed that the ST performance with thiamethoxam and imidacloprid + thiodicarb is affected by the soil type. In this sense, maize fields cultivated in sand soils requires a careful management, and complementary strategies can be necessary.Keywords: green-belly stinkbug, maize pests, initial pests, neonicotinoides, insecticide adorsoption.
Examining the Reactions of Women in Substance Use Treatment as Participants in a Study on Intimate Partner Violence: Does Shame Proneness Matter?
Authors: Shorey Ryan C. , Strauss Catherine , Elmquist Joanna , Anderson Scott , Stuart Gregory L.
Published: November 2017

Women in treatment for substance use report higher levels of intimate partner violence (IPV) victimization and perpetration than the general population. Despite an abundance of research with this vulnerable population, no study has examined the research reactions of women in substance use treatment who participate in a study of IPV. Thus, we investigated the research reactions of women (N = 64) in substance use treatment who completed a self-report measure on their psychological, physical, and sexual IPV. We also examined whether shame proneness—an affective predisposition to scrutinize and criticize oneself— moderated the association between reports of IPV and negative emotional research reactions. This information is important for institutional review boards (IRBs) and researchers in determining the most ethical and appropriate protections for participants in IPV research. Findings demonstrated that victims and perpetrators of IPV did not differ from nonvictims/nonperpetrators on negative emotional research reactions. Victims of psychological aggression reported more positive research experiences than nonvictims. Shame proneness did not moderate the relationship between IPV reports (victimization or perpetration) and negative emotional reactions, although shame proneness did exert a main effect on negative emotional research reactions. Findings add to a growing body of research on participant reactions to IPV research. Our results further support the safety of self-report IPV research.
Evidence-Based Best Practices for Batterer Intervention Programs: A Report From the Field on the Realities and Challenges Batterer Intervention Programs Are Facing
Authors: Wagers Shelly M. , Pate Margaret , Brinkley Anne
Published: November 2017

Throughout the United States, individuals are being court-ordered to attend batterer intervention programs (BIPs). BIPs were developed as an option to punish offenders for intimate partner violence (IPV) at the misdemeanor level. The purpose of BIPs is to hold batterers accountable and reduce the likelihood of recurring battery. However, determining the effectiveness of such programs has proven difficult because of the differences across programs and the uniqueness of individual batterers. In any case, there are best practices identified in the literature for particular components of BIPs such as practitioner education and training, proper intake and assessment, and offender oversight. In this article, we review the literature on the history of BIPs as well as the best practices identified earlier. Furthermore, the article describes an exploratory study that surveyed 7 local BIP practitioners. The questionnaire assessed practitioners’ practices and their compliance with current state standards as well as evidence-based practices recommended in the literature. The responses provided insight into the difficulties that practitioners face in meeting current state standards as well as practices outlined in empirical research. We conclude with a discussion on the issue of treating all batterers the same as well as areas for future study in the field of batterer intervention.
Intervening Effect of Financial Services on the Relationship Between Bank Restructuring and Financial Performance
Authors: Kithinji Angela Mucece , Mwangi Mirie , Litondo Kate , Ogutu Martin
Published: November 2017

Previous studies on the relationship between bank restructuring and financial performance reveal conflicting results with few studies establishing the effect of financial services. Few studies have investigated the causality between bank restructuring and financial performance as intervened by deposits and customer loans. The positivism research philosophy and descriptive and inferential causal research design were used in this study. The hypothetical view of the study was that the relationship between bank restructuring and financial performance of commercial banks in Kenya is not intervened by deposits and customer loans. The 39 commercial banks that were consistently in business for the period 2002 to 2014 were included in the study. Bank restructuring was disaggregated into financial restructuring, capital restructuring, operational restructuring and asset restructuring. The empirical findings were as follows: There was a significant direct association between bank restructuring and financial performance which was intervened by deposits and customer loans as proxies for financial services. Deposits were found to be significant in intervening the relationship between bank restructuring and financial performance. Customer loans on the other had was not found to significantly intervene the relationship between bank restructuring and financial performance. A composite variable of financial services denoting the aggregate of the intervention of deposits and customer loans showed a significant intervening effect on the relationship between bank restructuring and financial performance. The study outcome therefore reveals that the hypothesis that the relationship between bank restructuring and financial performance is not intervened by financial services is rejected. The conclusion is that banks should focus more on deposits to caution against a decrease in financial performance. Additionally customer loans should not be ignored since the intervention though insignificant tends to negatively influence financial performance. The implication is that when banks focus more on the provision of financial services they are likely to compromise financial finance possibly because of the increased costs associated with providing financial services. Regulatory institutions such as the Central Bank of Kenya (CBK) and the Kenya Institute of Bankers can use the study results to enhance policy and prudential guidelines to increase profitability of the banks. The study recommends that there is need to increase financial services offered by banks to increase outreach other than improving profitability of banks.
Influencia De La Tasa De Interés Real En La Inversión Privada En El Ecuador (2000-2014)
Authors: Puenchera Romel Jimbiquiti , Moreano Eduardo Zurita , Nina Dante Ayaviri , Bautista Gabriela González , Lombeida Ma Eugenia Borja
Published: November 2017

Since the dollarization in Ecuador, the interest rate and investment rate has picked up as the economy grows. The present research explains the behavior of the investment as a function of the interest rates, through the neoclassical theory of Jorgenson. This model argues that to maximize corporate profits, it is necessary to define a production function consistent with the maximization principle. The research looks for a positive relationship between the product (Y) and the private investment (IP). In this context, the real interest rate (ir), which represents the cost of the use of capital, has a negative relation according to the empirical evidence in favor of Jorgenson's neoclassical theory.
Export Scenario Between Bangladesh and China: Opportunities of Bangladesh in RMG Sector
Authors: Khan Ayub Nabi , Ullah Md. Rashed
Published: November 2017

The Ready-made Garment (RMG) industry has already promoted itself as the largest foreign currency earning sector for Bangladesh and occupying the 2nd position in leading exporters of clothing. From a humble beginning in late 70’s RMG sector has emerged itself and did employment about 4.5 million peoples. China is the largest clothing exporter and represents the lion’s share of the world market. In spite of being the second largest exporter, Bangladesh is far behind from China in any category of this sector including export earnings and a number of markets. Whereas China occupies one-third of global market share, Bangladesh has only 6 percent share in clothing export in the world but acts as a lifeline in her economy having 82 percent contribution of export earnings. Bangladesh could be more successful in this sector if it utilizes the available opportunities. For this, Bangladesh should try to grab the opportunities impeding in front because of backwardness of China in clothing export originating recently due to the transformation of the economy to high technology production and higher labor cost in garments. Hence it is important for policy makers to find out the facts and figure in exports of Bangladesh RMG to China. This paper will exhibit the comparativeness of Bangladesh vis-à-vis China in Ready-made Garment sector. Statistical analysis and secondary data sources have been used to make a broad discussion for this study. Bangladesh has the potentialities to be the next China if it can perform well according to the demand and challenges.
Los Valores en Los Consumidores Millennials de la Ciudad de Saltillo, Coahuila
Authors: Wong Adriana Méndez , Ruiz Edith Reyes , Siller Jesús Francisco Mellado , Ramirez Karina Lizbeth Rodriguez
Published: November 2017

This study makes a descriptive analysis of the clients profiles that belong to the Y or Millenial generation in the city of Saltillo, Coahuila. The study was performed using the Values List Scale (LOV) attributed to Khale (Khale, Beatty, & Homer, 1986) quoted by Irene Ramos Soler (2008). This scale was used for the investigation of market segmentation and in identifying target markets. It is a work that has to do with the field of marketing. This study however is considered as an exploratory, descriptive, quantitative, and transversal investigation. Using Pearson’s chi square analysis and an answer percentage comparison with the IBM SPSS software, they show us that the more important values are self-completion and selfesteem. A stratification sample was used. It also uses age variable and it applies a questionnaire instrument to 261 people that belong to Y generation in Saltillo, Coahuila.
Technological Learning in the Accumulation of Technological Capabilities: A Study of the Automotive Industry in Mexico
Authors: Hernandez Blanca Cecilia Salazar , Moheno Jessica Mendoza , Calzada Martin Aubert Hernandez
Published: November 2017

This paper will analyze the use of technological learning mechanisms in automotive industry companies located in the central part of Mexico -in the states of Guanajuato, Hidalgo and Queretaro. It will also analyze their impact in the accumulation of technological capabilities. It will explain which mechanisms were used according to the size of these companies. The analysis will conclude that micro-companies face serious limitations in this regard, while medium-size and large companies make better use of the different mechanisms for technological learning which can be seen in the innovation of these businesses.
As Ilhas e a expansão da cultura e tecnologia da cana-de-açúcar no Atlântico nos séculos XV a XIX
Authors: Vieira Alberto
Published: November 2017

No século XV, A Madeira surge como a primeira experiência de ocupação portuguesa em que se ensaiaram produtos, técnicas e estruturas institucionais, que foram, depois, utilizados em larga escala noutras ilhas, litoral africano e americano. O arquipélago madeirense foi o centro de irradiação dos sustentáculos da nova sociedade e economia do mundo atlântico: primeiro os Açores, depois os demais arquipélagos e regiões costeiras onde os portugueses aportaram. A Madeira marcou a História da Cana-de-açúcar entre os séculos XV e XX. Todavia, esta cultura não se manteve como uma constante da história da ilha, notando-se um hiato no século XVIII. A cultura da cana-de-açúcar se expandiu, tornando-se importante fator de animação da agricultura e da indústria madeirense. A Madeira esteve na linha da frente das inovações tecnológicas. Nos séculos XV e XVI acresce a função de distribuição da cultura e técnica em todo o espaço atlântico. Para finais do século XIX e princípios do seguinte, ficaria reservado papel pioneiro no ensaio de algumas técnicas e sistemas de fabrico de açúcar e aguardente que revolucionaram todo o processo industrial.
Mapudungun e processos de escolarização dos Mapuche no discurso governamental e pedagógico no Chile
Authors: Soto Veloso Elba Guilhermina
Published: November 2017

O povo mapuche do Chile faz parte desse país que lhe impõe o espanhol como língua nacional. A pesquisa foca os processos históricos da língua do povo indígena mapuche do Chile e seus processos de escolarização a partir da incorporação desse povo pelo Estado-nação chileno. Para tal, buscou-se os sentidos mobilizados no discurso governamental, quando se fala desses processos históricos. Na pesquisa analisamos – na ótica discursiva francesa – as leis de Educação de 1860, de 1920 e a Lei Indígena 19.253 de 1993. Mas, o foco deste artigo está nos significados da Lei Indígena, que nos permitirão localizar a discussão sobre as tentativas de Educação Intercultural Bilíngüe – EIB, e sobre os processos de escolarização no Chile hoje.
Imigração e propriedade rural no Circuito das Frutas [SP]
Authors: Abrahão Fernando Antonio
Published: November 2017

O Circuito das Frutas do Estado de São Paulo é uma região econômica composta por oito municípios: Indaiatuba, Itatiba, Itupeva, Jarinú, Jundiaí, Louveira, Vinhedo e Valinhos. Nesses municípios predominam as pequenas propriedades rurais, muitas delas pertencentes a descendentes de imigrantes.