bluuebunny/crossref_metadata_2025_split huggingface dataset:
Konsep Belajar Mengajar Dalam Al-Qur’An: Telaah Implikasi Edukatif Qs. Al-‘Alaq (96): 1-5
Authors: Taufik Muhammad 
Published: March 2016

The concept of teaching and learning in the al-Qur’an is basically able to, necessary, and must be exploited and developed continuously. This is to take into reality the superiority of the concepts from al-Qur’an and provide appropriate solution to the development of knowledge and science, education and teaching, and learning. In this perspective, as stated in Qs. al-‘Alaq (96):1-5, about the decree to learn nobly basically can be viewed as the model of learning which is in line with the model of learning recommended by latest findings of the researches in the field of sciences such as neuropsychology, neurobiology, and neuroscience where the subjects of learners are admitted and respected. Therefore, the command to read followed by the name of the Lord, the Almighty, and the direction or object of learning, contain problematical concepts started from intention and learning nobly and problem solving model which is also valued graciously.
Parasitosis intestinales y factores socio-sanitarios en niños del área rural del distrito de Los Baños del Inca, Cajamarca-Perú
Authors: Rodríguez-Ulloa Claudia , Rivera-Jacinto Marco , Saucedo-Duran Edith , Rojas-Huamán Yessica , Valdivia-Meléndez Nayeli , Cabanillas-Vásquez Quely , Blanco-Burga Hebert 
Published: March 2016

Sr. Editor: La parasitosis intestinal, de alta incidencia en los niños, es un importante problema de salud pública en Cajamarca, y agrupadas dentro de las enfermedades infecciosas intestinales constituyen una de las diez primeras causas de morbilidad y de mortalidad en este grupo poblacional (1). La alta ruralidad de la región cajamarquina es favorable, desde el punto de vista epidemiológico, socioeconómico y ecológico, para que los niños adquieran infecciones parasitarias con mayor frecuencia (2).
Características clínico patológicas del cáncer de cérvix uterino recurrente después de cirugía radical primaria
Authors: Aguilar Pedro , Valdivia Henry 
Published: March 2016

Objetivo: Describir las características clínico patológicas del cáncer de cérvix uterino recurrente, sitio y tiempo de recurrencia, y sobrevida después de la recurrencia de acuerdo a las variables de pronóstico en pacientes con cirugía radical primaria. Material y métodos: Estudio descriptivo, observacional y retrospectivo, tipo serie de casos, realizado en el Instituto Nacional de Enfermedades Neoplásicas de Lima Perú entre 1990 y 2005. Se incluyeron todas las pacientes con cáncer de cérvix uterino estadios IB1 y IIA a quienes se les realizó cirugía radical primaria y que tuvieron recurrencia. Las curvas de sobrevida fueron construidas con el método de Kaplan Meier. Resultados: Se realizaron 609 histerectomías radicales tipo III, 53(8,7%) tuvieron recurrencia. La edad promedio al diagnóstico de la recurrencia fue 44,5 años, el tiempo medio desde la cirugía hasta la recurrencia 18,9 meses y el sitio de recurrencia más frecuente fue a distancia (41,5%) seguido por recurrencia central y pélvica. El sitio de recurrencia y los márgenes quirúrgicos tuvieron significancia estadística con respecto al tiempo de recurrencia. La terapia de salvataje más frecuente fue la radioterapia (45%). La sobrevida promedio después de la recurrencia fue 26,9 meses y la tasa de sobrevida a 5 años 9,4%. Conclusiones: El cáncer cervical recurrente es poco frecuente, afecta a mujeres jóvenes y el sitio de recurrencia más frecuente es metástasis a distancia. El tiempo de recurrencia es más corto cuando la recurrencia es central y los márgenes quirúrgicos están afectados. La sobrevida después de la recurrencia en cáncer cervical tratado con cirugía radical es baja.
Correlación del grosor de la íntima media carotidea con el perfil de lípidos y otros factores de riesgo cardiovascular en pacientes en hemodiálisis crónica.
Authors: Ramírez-Vela Rosa , Cieza-Zevallos Javier , Pinto-Valdivia Miguel , Medina-Palomino Félix 
Published: March 2016

Los pacientes con enfermedad renal crónica estadio 5 en terapia de sustitución renal tienen riesgo incrementado de eventos cardiovasculares, los cuales están asociados a diferentes factores, dentro de los cuales el grosor de la íntima media de la arteria carótida común (GIMCC) y de la carótida interna (GIMCI), es un predictor relevante. Objetivo: Determinar la relación entre el grosor de la íntima media de las arterias carótidas con el valor de los lípidos, el estado nutricional, el metabolismo óseo y otros factores de riesgo cardiovascular en una población nacional en hemodiálisis crónica. Material y métodos: Se estudiaron 50 pacientes adultos en hemodiálisis (HD) crónica del Centro de Hemodiálisis de la Universidad Peruana Cayetano Heredia; a quienes se les determinó lípidos, calcio (Ca), fósforo (P), paratohormona (PTH), proteínas totales, albúmina en sangre y se midió el grosor íntima media de las arterias carótidas común e interna. Se registró información demográfica, antropométrica, clínica, tiempo en HD y dosis de diálisis medida (Kt/V). Los datos se analizaron mediante correlación lineal simple y análisis de regresión lineal múltiple. Resultados: Se encontró correlación significativa entre GIMCC y PTH (r=-0,426, p=0,013), entre GIMCI y PTH (r=-0,349, p=0,046), GIMCC y colesterol total (r=0,410, p=0,018) y entre el GIMCI y colesterol total (r=0,506 p=0,003). En el análisis de regresión lineal múltiple el mejor modelo fue el relacionado con tabaquismo, edad y HDL colesterol (Coeficiente beta 1,216 ± 0,347 ES; p=0,002). Conclusión: Los resultados muestran que el factor más relevante relacionado al GIMCI es el tabaquismo y en menor importancia el colesterol HDL y la edad.
Producción científica peruana sobre trastornos mentales en SciELO-Perú, 2006-2011.
Authors: Taype-Rondán Álvaro , Lajo-Aurazo Yasmín , Huamaní Charles 
Published: March 2016

Objetivo: Determinar las características de los trabajos de investigación sobre Trastornos Mentales (TM) publicados por autores peruanos en SciELO-Perú, durante el periodo 2006 - 2011. Material y métodos: Estudio bibliométrico. Se incluyeron artículos científicos sobre TM publicados en revistas indizadas en SciELO-Perú en el periodo 2006-2011. Se realizó una revisión de todos los artículos publicados en revistas de medicina y psicología. Se seleccionaron los artículos con al menos un autor peruano y que abordaran algún TM como objetivo principal, objetivo secundario, o como parte de un objetivo mayor. Las variables analizadas comprendieron: tipo de trastorno, filiación de los autores, citas del artículo y financiamiento recibido. Resultados: Se identificaron 686 artículos originales publicados por autores peruanos en seis revistas; de estos, 51 (7,4%) tuvieron como objetivo principal TM. Las áreas temáticas que se desarrollaron con más frecuencia fueron depresión, abuso de sustancias y trastornos del sueño. Las instituciones con mayor aporte fueron la Universidad Peruana Cayetano Heredia y la Universidad Nacional Mayor de San Marcos. Además, siete estudios (13,7%) mencionaron haber recibido apoyo económico. Conclusiones: Se identificaron pocas publicaciones sobre TM en revistas peruanas.
Changing 8-9 Year-Old Pupil’s Mental Representations of Light: A Metaphor Based Teaching Approach
Authors: Rodriguez James , Castro David 
Published: March 2016

<p>This research paper examines the role that teaching mediation plays in the destabilization and reconstruction of representations of the concept of light among primary education students. It investigates their comprehension of light as an entity that is transferred autonomously of the light source and the receiver. This problem has been studied with two groups of 8-9 year-old children. The experimental group (E.G) participated in a teaching process that aimed to lead pupils to the construction of a model compatible to the scientific own; the control group (C.G) followed traditional teaching methods. In all experimental situations studied the difference between pre-test and post-tests was significant for the subjects of the experimental group both at the level of explaining the light as independent entity and at the level of the stability of cognitive acquisitions. </p>
Is TV Increasing Aggression in Secondary School Students: An Enquiry?
Authors: Kant Ravi 
Published: March 2016

<p>Entire generation is growing with media i.e. mobile and TV etc. Television is the powerful medium of communication with a tremendous potency to inform to entertain and to educate. Its expansion has been more dramatic than that to radio or the automobile. It has become an important part of our life, so much that it is difficult to say whether it is a luxury or necessity.” India is a developing country and its selections are different in culture, ideas the way of living and thinking too. Teenagers are the backbone of the country to form a place worthy citizen. They are too tender to motivate by any act or deed. Social activists, Educationists are debating whether Television is increasing aggression of students. By taking 200 sample of secondary school students with the help of one standardized and one self-made tool, an attempt has made to explore relationship between TV viewing and aggression. Survey method was used. Investigation find there slightly difference in TV viewing of male and female students. Male students found more aggressive in comparison of their counterpart i.e. females. Television viewing has a slight effect on aggression of students but statistically it found non-significant. </p>
The Effect of Corporate Tax Avoidance on the Cost of Equity
Authors: Goh Beng Wee , Lee Jimmy , Lim Chee Yeow , Shevlin Terry 
Published: March 2016

ABSTRACT
Based on Lambert, Leuz, and Verrecchia's (2007) derivation of the cost of equity capital in terms of expected cash flows, we generate a testable hypothesis that relates tax avoidance to a firm's cost of equity capital. Using three broad measures of tax avoidance—book-tax differences, permanent book-tax differences, and long-run cash effective tax rates—to test our hypothesis, we find that the cost of equity is lower for tax-avoiding firms. This effect is stronger for firms with better outside monitoring, firms that likely realize higher marginal benefits from tax savings, and firms with higher information quality. Overall, our results suggest that equity investors generally require a lower expected rate of return due to the positive cash flow effects of corporate tax avoidance.
JEL Classifications: G32; H26; M41.
The Effects of Regulatory Scrutiny on Tax Avoidance: An Examination of SEC Comment Letters
Authors: Kubick Thomas R. , Lynch Daniel P. , Mayberry Michael A. , Omer Thomas C. 
Published: March 2016

ABSTRACT
This study examines the tax avoidance behavior of firms prior to the issuance, and following the resolution, of SEC tax comment letters. We find that firms that appear to engage in greater tax avoidance are more likely to receive a tax-related SEC comment letter. We also find that firms receiving a tax-related SEC comment letter, relative to firms receiving a non-tax comment letter, subsequently decrease their tax avoidance behavior consistent with an increase in expected tax costs. Additionally, we document evidence consistent with other firms that do not receive a comment letter reacting to multiple publicly disclosed tax-related comment letters within their industry by increasing their reported GAAP ETR, consistent with an indirect effect of regulatory scrutiny on certain types of tax avoidance.
Alibaba Group Initial Public Offering: A Case Study of Financial Reporting Issues
Authors: Burke Qing L. , Eaton Tim V. 
Published: March 2016

ABSTRACT
In September 2014, the Chinese e-commerce giant Alibaba Group Holding Limited issued shares on the New York Stock Exchange, making it the world's largest initial public offering. This case examines different aspects of the Alibaba Group's initial public offering, including Alibaba Group's business model, financial reporting and corporate governance, as well as the macroeconomic, political, and legal environment in which the company operates. In addition, this case will familiarize students with the risks and opportunities for Chinese companies and investors when a Chinese company lists in the U.S. This case is suitable for financial accounting and international accounting courses at the intermediate and advanced levels for undergraduates as well as graduate students. The case is scalable, and instructors can choose from multiple sections of the case and different case questions to tailor the case difficulty to their students' learning needs.
A multi-model approach to Saint-Venant equations: A stability study by LMIs
Authors: Dos Santos Martins Valérie , Rodrigues Mickael , Diagne Mamadou 
Published: March 2016

Abstract
This paper deals with the stability study of the nonlinear Saint-Venant Partial Differential Equation (PDE). The proposed approach is based on the multi-model concept which takes into account some Linear Time Invariant (LTI) models defined around a set of operating points. This method allows describing the dynamics of this nonlinear system in an infinite dimensional space over a wide operating range. A stability analysis of the nonlinear Saint-Venant PDE is proposed both by using Linear Matrix Inequalities (LMIs) and an Internal Model Boundary Control (IMBC) structure. The method is applied both in simulations and real experiments through a microchannel, illustrating thus the theoretical results developed in the paper.
Enclosures for the solution set of parametric interval linear systems
Authors: Hladík Milan 
Published: March 2016

Abstract
We investigate parametric interval linear systems of equations. The main result is a generalization of the Bauer–Skeel and the Hansen–Bliek–Rohn bounds for this case, comparing and refinement of both. We show that the latter bounds are not provable better, and that they are also sometimes too pessimistic. The presented form of both methods is suitable for combining them into one to get a more efficient algorithm. Some numerical experiments are carried out to illustrate performances of the methods.
Modelling and control of an omnidirectional mobile manipulator
Authors: Djebrani Salima , Benali Abderraouf , Abdessemed Foudil 
Published: March 2016

Abstract
A new approach to control an omnidirectional mobile manipulator is developed. The robot is considered to be an individual agent aimed at performing robotic tasks described in terms of a displacement and a force interaction with the environment. A reactive architecture and impedance control are used to ensure reliable task execution in response to environment stimuli. The mechanical structure of our holonomic mobile manipulator is built of two joint manipulators mounted on a holonomic vehicle. The vehicle is equipped with three driven axles with two spherical orthogonal wheels. Taking into account the dynamical interaction between the base and the manipulator, one can define the dynamics of the mobile manipulator and design a nonlinear controller using the input-state linearization method. The control structure of the robot is built in order to demonstrate the main capabilities regarding navigation and obstacle avoidance. Several simulations were conducted to prove the effectiveness of this approach.
Optimal estimator of hypothesis probability for data mining problems with small samples
Authors: Piegat Andrzej , Landowski Marek 
Published: March 2016

Abstract
The paper presents a new (to the best of the authors’ knowledge) estimator of probability called the “Eph √ 2 completeness estimator” along with a theoretical derivation of its optimality. The estimator is especially suitable for a small number of sample items, which is the feature of many real problems characterized by data insufficiency. The control parameter of the estimator is not assumed in an a priori, subjective way, but was determined on the basis of an optimization criterion (the least absolute errors).The estimator was compared with the universally used frequency estimator of probability and with Cestnik’s m-estimator with respect to accuracy. The comparison was realized both theoretically and experimentally. The results show the superiority of the Eph √ 2 completeness estimator over the frequency estimator for the probability interval ph ∈ (0.1, 0.9). The frequency estimator is better for ph ∈ [0, 0.1] and ph ∈ [0.9, 1].
KIS: An automated attribute induction method for classification of DNA sequences
Authors: Biedrzycki Rafał , Arabas Jarosław 
Published: March 2016

Abstract
This paper presents an application of methods from the machine learning domain to solving the task of DNA sequence recognition. We present an algorithm that learns to recognize groups of DNA sequences sharing common features such as sequence functionality. We demonstrate application of the algorithm to find splice sites, i.e., to properly detect donor and acceptor sequences. We compare the results with those of reference methods that have been designed and tuned to detect splice sites. We also show how to use the algorithm to find a human readable model of the IRE (Iron-Responsive Element) and to find IRE sequences. The method, although universal, yields results which are of quality comparable to those obtained by reference methods. In contrast to reference methods, this approach uses models that operate on sequence patterns, which facilitates interpretation of the results by humans.
Modeling nonlinear road traffic networks for junction control
Authors: Péter Tamás 
Published: March 2016

Abstract
The paper introduces a method of mathematical modeling of high scale road traffic networks, where a new special hypermatrix structure is intended to be used. The structure describes the inner–inner, inner–outer and outer–outer relations, and laws of a network area. The research examines the nonlinear equation system. The analysed model can be applied to the testing and planning of large-scale road traffic networks and the regulation of traffic systems. The elaborated model is in state space form, where the states are vehicle densities on a particular lane and the dynamics are described by a nonlinear state constrained positive system. This model can be used directly for simulation and analysis and as a starting point for investigating various control strategies. The stability of the traffic over the network can be analyzed by constructing a linear Lyapunov function and the associated theory. The model points out that in intersection control one must take the traffic density values of both the input and the output sections into account. Generally, the control of any domain has to take the density of input and output sections into consideration.
Melt Creep Recovery of Polyamide 6 and Polypropylene Nanocomposites Blended with Layered Silicate
Authors: Lin G.-G. , Jian Y.-F. Jang , Huang C.-T. 
Published: March 2016

Abstract
Nanocomposites of polyamide six (PA6) reinforced with organoclay were prepared in this study through melt mixing. The blended montmorillonite clay was organically modified with octadecylamine. The loadings of the clay were 1 wt%, 5 wt%, and 9 wt%. The obtained nanocomposites exhibited exfoliation (1 wt%) and intercalation (other compositions) structures. By contrast, if they were mixed with unmodified clay, the PA6 molecules could not enter the silicate interlayer. For polypropylene (PP), forming nanocomposites with organoclay was difficult but made feasible by incorporating the maleated PP. The results of dynamic rheological tests demonstrated that an end-tethered storage modulus was observed for the PA6/organoclay nanocomposites. However, the PP/organoclay exhibited terminal-zone behavior. In addition, the shear creep recovery was conducted on the molten polymer composites. The results indicated that the molten PA6/organoclay nanocomposite exhibited a higher creep-recovery ratio, a measure of the elastic property, than that of pristine PA6. The time constant in the Voigt-Kelvin constitutive model for the PA6/organoclay melts was lower than that of the pristine PA6 due to the superior elastic moduli, because it is defined as the ratio of viscosity to the modulus. However, the recovery ratios for most of the PP nanocomposites were found to be less than that for the pristine PP, indicating the fair reinforcing effect of the organoclay.
Experimental Investigation on Curing Stress in Polymer Composite Using Digital Gradient Sensing Technique
Authors: Hao W. , Chen X. , Yuan Y. , Ma Y. 
Published: March 2016

Abstract
The curing stress and deformation of epoxy resin and aramid fiber/epoxy composites was measured using Digital Gradient Sensing (DGS) technique. First, the working principle of the DGS method was explained, and the governing equations were derived based on angular deflections of light rays. Then the angle deflection of light rays due to curing stress of epoxy resin was measured, and the effect of the fiber bundle and aramid fiber fabric on the stress distribution during formation was analyzed. The experimental results show that angular deflections of light rays can be related to nonuniform distribution of curing stress in epoxy. The fiber bundles and fabric style have important effects on the curing stress distribution. These results play an important role for predicting curing stress and deformation of fiber reinforced composites.
The Comparative Study of Different Mixing Methods for Microcrystalline Cellulose/Polyethylene Composites
Authors: Boran S. , Kiziltas A. , Kiziltas E. E. , Gardner D. J. 
Published: March 2016

Abstract
Polymer composites with polyethylene (PE), microcrystalline cellulose (MCC), and coupling agent (PE-g-MA) were melt blended using a single screw extruder (SSE), twin screw extruder (TSE), and a combination of SSE and extensional flow mixer (EFM) and masterbatch method (MB). The rheological behavior, mechanical, thermal, and morphological properties were investigated to compare material behavior of the MCC-filled PE composites and to evaluate the dispersive mixing efficiency. The composite samples prepared using a single pass method in SSE had relatively larger storage moduli (G′) while those from the TSE and SSE + EFM were smaller. The complex viscosities (η*) of composites with processed using EFM was higher than that of neat PE, indicating better dispersion of the MCC.MCC-filled PE composites processed with EFM showed higher tan delta compared to those of composites. In general, MCC-filled PE composites from the EFM process showed higher viscosity compared to all other composites at all shear rates. The EFM method improved flexural properties more than the other processing methods. The effect of EFM on impact strength of the composites was improved with coupling agent. Addition of MCC, couple agent, and different mixing methods did not significantly affect the thermal properties of the MCC-filled PE composites.
Numerical Simulation of Chaotic Mixing in Single Screw Extruders with Different Baffle Heights
Authors: Xu B.-P. , He L. , Wang M.-G. , Tan S.-Z. , Yu H.-W. , Turng L.-S. 
Published: March 2016

Abstract
A kind of discontinuous baffle, which had the same length as the non-baffle zone distance, was inserted in the unwound channel of a single screw extruder to enhance mixing in the screw channel. The periodic unit of the flow channel was modeled as a dynamic system of complex duct flow. The finite volume method was used to solve the three-dimensional flow of purely viscous non-Newtonian fluid. Fluid particle tracking was performed by a fourth-order Runge–Kutta scheme. The effect of the baffle height on the mixing kinematics was investigated numerically. Poincaré sections were applied to reveal the different patterns and sizes of the KAM tubes. Distributive mixing was then visualized by the evolution of passive tracers initially located at different positions. The variance index and residence time distribution (RTD) were used to evaluate the statistical results. Among the four test cases, the results showed that the case with the baffle height equal to the screw depth had the largest chaotic mixing region, but the shortest mean residence time and the narrowest broadening of RTD under the same pressure gradient.