bluuebunny/crossref_metadata_2025_split huggingface dataset:
Integration of Battery Energy Storage Systems to Solar PV to Reduce the AH Capacity by Extracting Maximum Power from PV Array under Varying Irradiance and Load Conditions for Rural/Remote Area Applications
Authors: Kolakaluri Vinay Kumar , Mikkili Suresh 
Published: October 2019

Abstract
Integration of two or more sources of energy generating units is fruitful where energy distribution by utility grid is not feasible. This paper provides the insight into design and performance analysis of a hybrid system consisting of solar Photovoltaic (PV) and battery to yield a continuous power to the load for rural/remote areas with lesser Ampere Hour (AH) capacity. The objective of this paper is to reduce the AH capacity of a battery pack by extracting the maximum power from the PV array. The performance of a proposed PV-Battery Integrated System (PBIS) under varying irradiance, load conditions has been carried out on a 4 × 1 PV array system. The performance assessment has been carried out on various parameters such as PV array, Battery, Load currents & powers, Percentage of PV power improvement etc., These results of proposed topology are compared with the solar array with bypass diode configuration under four different shading patterns. The simulation is carried out using MATLAB/SIMULINK and results are presented.
A New Islanding Detection Method Based on Wavelet-transform and ANN for Micro-grid Including Inverter Assisted Distributed Generator
Authors: Guan Zhengyuan , Liao Yuan 
Published: October 2019

Abstract
This paper presents a new composite approach based on wavelet-transform and ANN for islanding detection of distributed generation (DG). The proposed method first uses wavelet-transform to detect the occurrence of events, and then uses artificial neural network (ANN) to classify islanding and non-islanding events. Total harmonic distortion and voltage unbalance are extracted as feature inputs for ANN classifier. The performance of the proposed method is tested by simulations for two typical distribution networks based on MATLAB/Simulink. The results show that the developed method can effectively detect islanding with low misclassification. The method has the advantages of small non-detection zone and robustness against noises.
Hyperbolic structures on wreath products
Authors: H. Balasubramanya Sahana 
Published: October 2019

Abstract
The study of the poset of hyperbolic structures on a group G was initiated
by C. Abbott, S. Balasubramanya and D. Osin,
[Hyperbolic structures on groups,
Algebr. Geom. Topol. 19 2019, 4, 1747–1835, 10.2140/agt.2019.19.1747].
However, this poset is still very far from being understood, and several questions remain unanswered.
In this paper, we give a complete description of the poset of hyperbolic structures on the lamplighter groups

wr
⁡

ℤ
n

ℤ

{\mathbb{Z}_{n}\mathbin{\mathrm{wr}}\mathbb{Z}}

and obtain some partial results about more general wreath products.
As a consequence of this result, we answer two open questions regarding quasi-parabolic structures: we give an example of a group G with an uncountable chain of quasi-parabolic structures and prove that the lamplighter groups

wr
⁡

ℤ
n

ℤ

{\mathbb{Z}_{n}\mathbin{\mathrm{wr}}\mathbb{Z}}

all have finitely many quasi-parabolic structures.
Impact of preventive actions on rejection rates in the preanalytical period
Authors: Odabasi Merve Sena , Dirican Melahat , Yilmaztepe Oral Arzu , Ozkaya Guven 
Published: October 2019

Abstract

Background
It is responsibility of medical laboratories to determine and reject nonconforming samples as well as take preventive actions. In this study, we examined reasons and percentages of rejected samples. We also investigated impact of the preventive actions on decreasing the rejection rates.

Materials and methods
Reasons for rejection were determined by Pareto analysis. Sigma analysis was used for each month to evaluate the ratios and compare with other studies. Some preventive actions were taken to reduce the rejection rates. Pearson’s chi square test was used to evaluate effects of preventive actions. Significance level was determined as p < 0.05.

Results
Most of the rejected samples consisted of samples not received by the laboratory, haemolysed and insufficient samples. The percentages of samples not received by the laboratory and insufficient samples were reduced from 3.80% to 1.94% and 0.33% to 0.31% respectively, while haemolysed samples percentage was increased from 2.83% to 3.37% after the improvement actions. Also, sigma levels for samples not received by the laboratory and haemolysed samples were at the minimum while insufficient samples were at a reasonable level.

Conclusion
Improvement actions achieved statistically significant decreases for samples not received by the laboratories for a long-term.
Processing of action and sound verbs in context: An FMRI study
Authors: Popp Margot , Trumpp Natalie M. , Kiefer Markus 
Published: October 2019

Abstract
Recent theories propose a flexible recruitment of sensory and motor brain regions during conceptual processing depending on context and task. The present functional magnetic resonance imaging study investigated the influence of context and task on conceptual processing of action and sound verbs. Participants first performed an explicit semantic context decision task, in which action and sound verbs were presented together with a context noun. The same verbs were repeatedly presented in a subsequent implicit lexical decision task together with new action and sound verbs. Thereafter, motor and acoustic localizer tasks were administered to identify brain regions involved in perception and action. During the explicit task, we found differential activations to action and sound verbs near corresponding sensorimotor brain regions. During the implicit lexical decision task, differences between action and sound verbs were absent. However, feature-specific repetition effects were observed near corresponding sensorimotor brain regions. The present results suggest flexible conceptual representations depending on context and task. Feature-specific effects were observed only near, but not within corresponding sensorimotor brain regions, as defined by the localizer tasks. Our results therefore only provide limited evidence in favor of grounded cognition theories assuming a close link between the conceptual and the sensorimotor systems.
Early multidisciplinary intensive-care therapy can improve outcome of severe anti-NMDA-receptor encephalitis presenting with extreme delta brush
Authors: Schneider R. , Brüne M. , Breuer TG. , Börnke C. , Gold R. , Juckel G. 
Published: October 2019

Abstract
Anti-N-methyl-D-aspartate receptor encephalitis (Anti-NMDARE) is a synaptic autoimmune encephalitis syndrome mainly affecting young females. An underlying tumor, most commonly ovarian teratomas in young females, may indicate a paraneoplastic syndrome. Prognostic factors of the clinical course of disease and outcome play a central role in view of early administration of second-line immunotherapy and intensive-care therapy. We report a case of severe Anti-NMDARE associated with unfavorable predictors including an extreme delta brush (EDB) electroencephalographic-pattern and high anti-NMDAR-antibody titers in the cerebral spinal fluid (CSF), which necessitated the admission to an intensive care unit. In spite of the poor prognosis, the patient completely recovered; we attribute this to an early escalation to second-line immunotherapy with rituximab and multidisciplinary intensive-care therapy. The present case underlines the relevance of multidisciplinary management for individuals with Anti-NMDARE.
CSF proteomics of patients with hydrocephalus and subarachnoid haemorrhage
Authors: Sokół Bartosz , Urbaniak Bartosz , Zaremba Bartosz , Wąsik Norbert , Kokot Zenon J. , Jankowski Roman 
Published: October 2019

Abstract

Background
The pathophysiology of brain injury following aneurysmal subarachnoid haemorrhage (SAH) is associated with numerous mediators. The aim of the study is to analyse protein changes after SAH in cerebrospinal fluid (CSF) using mass spectrometry (MS).

Methods
CSF samples were obtained from forty-four control subjects, seven good outcome and ten poor outcome SAH patients. CSF samples were collected at specific time intervals after SAH (days 1, 5 and 10). MALDI-TOF (Matrix Assisted Laser Desorption/Ionization Time-of-Flight) and ClinProTools software were utilised for MS, MS/MS (Mass Spectrometry) spectra collection and analysis. Selected masses were identified. The MALDI-TOF profiling experiments allowed for the targeted selection of potential markers in SAH. The study was performed in three steps by comparison of CSF samples: (1) from the control group and SAH patients (both good and poor outcome groups); (2) collected on days 1, 5 and 10 within the groups of poor SAH and good SAH patients, respectively; (3) from poor outcome SAH and good outcome patients at days 1, 5 and 10.

Results
15 new proteins whose CSF level is alternated by SAH presence, SAH treatment outcome and time passed since aneurysm rupture were identified.

Conclusions
We demonstrated new proteins which might play a role in different stages of subarachnoid haemorrhage and could be a new target for further investigation.
Seven-day remote ischaemic preconditioning improves endothelial function in patients with type 2 diabetes mellitus: a randomised pilot study
Authors: Maxwell Joseph D , Carter Howard H , Hellsten Ylva , Miller Gemma D , Sprung Victoria S , Cuthbertson Daniel J , Thijssen Dick H J , Jones Helen 
Published: October 2019

Background
Remote ischaemic preconditioning (rIPC) may improve cardiac/cerebrovascular outcomes of ischaemic events. Ischaemic damage caused by cardiovascular/cerebrovascular disease are primary causes of mortality in type 2 diabetes mellitus (T2DM). Due to the positive effects from a bout of rIPC within the vasculature, we explored if daily rIPC could improve endothelial and cerebrovascular function. The aim of this pilot study was to obtain estimates for the change in conduit artery and cerebrovascular function following a 7-day rIPC intervention.

Methods
Twenty-one patients with T2DM were randomly allocated to either 7-day daily upper-arm rIPC (4 × 5 min 220 mmHg, interspaced by 5-min reperfusion) or control. We examined peripheral endothelial function using flow mediated dilation (FMD) before and after ischemia-reperfusion injury (IRI, 20 min forearm ischaemic-20 min reperfusion) and cerebrovascular function, assessed by dynamic cerebral autoregulation (dCA) at three time points; pre, post and 8 days post intervention.

Results
For exploratory purposes, we performed statistical analysis on our primary comparison (pre-to-post) to provide an estimate of the change in the primary and secondary outcome variables. Using pre-intervention data as a covariate, the change from pre-post in FMD was 1.3% (95% CI: 0.69 to 3.80; P = 0.09) and 0.23 %cm/s %/mmHg mmHg/% (−0.12, 0.59; P = 0.18) in dCA normalised gain with rIPC versus control. Based upon this, a sample size of 20 and 50 for FMD and normalised gain, respectively, in each group would provide 90% power to detect statistically significant (P < 0.05) between-group difference in a randomised controlled trial.

Conclusion
We provide estimates of sample size for a randomised control trial exploring the impact of daily rIPC for 7 days on peripheral endothelial and cerebrovascular function. The directional changes outline from our pilot study suggest peripheral endothelial function can be enhanced by daily rIPC in patients with T2DM.
Las Tecnologías de información y comunicación (TICs) como respuesta a necesidades educativas del medio rural
Authors: Víquez Salazar Marlene 
Published: October 2019

Recibido 15 de junio 2007 • Aprobado 20 de agosto 2007

El artículo tiene como propósito reflexionar, desde una perspectiva crítica, sobre el uso de las tecnologías de la información y las comunicaciones (TIC) en la educación rural, bajo el supuesto de que estos recursos no resuelven por sí solos ls problemas, sino que pueden generar respuestas a situaciones concretas en el ámbito de la educación rural. Para ello, se hace un análisis desde diferentes aristas.
Análisis de necesidades educativas curriculares en la educación primaria dirigida a niños (as) nicaragüenses migrantes en Costa Rica
Authors: Mejía Arias Nidia Esperanza 
Published: October 2019

Recibido 17 de junio 2007 • Aprobado 20 de agosto 2007

Con este artículo se pretende dar a conocer las necesidades curriculares identificadas en niñas y niños nicaragüenses migrantes que estudian en la escuela primaria rural Los Ángeles del Cantón Los Chiles de Costa Rica. Ellos y ellas, actualmente, se encuentran en una situación de exclusión, discriminación e indiferencia por parte de las instituciones locales. Existen obstáculos para el aprendizaje efectivo y el desarrollo de actitudes positivas, entre ellos la falta de participación responsable de la comunidad educativa, el procedimiento metodológico utilizado en el aula y la adecuación curricular del modelo pedagógico oficial costarricense; divorciados éstos, de las condiciones socioculturales de esta población educativa, de su familia y de la comunidad rural donde residen.
Esta situación afecta la motivación de las niñas y niños, quienes no alcanzan las metas educativas: la mayoría de los que se matriculan dejan inconclusa la educación primaria, y los que la completan tienen dificultades académicas para ingresar a secundaria.
Los sistemas educativos de Nicaragua y de Costa Rica deben plantear estrategias educativas conjuntas, que den respuesta a las necesidades educativas curriculares que presentan los niños nicaragüenses migrantes en las escuelas rurales costarricenses.
Finite Element Analysis of Mixed Convection in a Rectangular Cavity with a Heat-Conducting Horizontal Circular Cylinder
Authors: Rahman Md. M. M. , Alim M. A. A. , Mamun M. A. H. A. H. 
Published: October 2019

. Combined free and forced convection in a two dimensional rectangular cavity with a uniform heat source applied on the right vertical wall is studied numerically. A circular heat conducting horizontal cylinder is placed somewhere within the cavity. The present study simulates a practical system, such as a conductive material in an inert atmosphere inside a furnace with a constant flow of gas from outside. Importance is placed on the influences of the configurations and physical properties of the cavity. The development mathematical model is governed by the coupled equations of continuity, momentum and energy and is solved by employing Galerkin weighted residual finite element method. In this paper, a finite element formulation for steadystate incompressible conjugate mixed convection and conduction flow is developed. The computations are carried out for wide ranges of the governing parameters, Reynolds number (Re), Richardson number (Ri), Prandtl number (Pr) and some physical parameters. The results indicate that both the heat transfer rate from the heated wall and the dimensionless temperature in the cavity strongly depend on the governing parameters and configurations of the system studied, such as size, location, thermal conductivity of the cylinder and the location of the inflow and outflow opening. Detailed results of the interaction between forced airstreams and the buoyancy-driven flow by the heat source are demonstrated by the distributions of streamlines, isotherms and heat transfer coefficient.
MHD Effects on Non-Darcy Forced Convection Boundary Layer Flow past a Permeable Wedge in a Porous Medium with Uniform Heat Flux
Authors: Rashad A. M. M. , Bakier A. Y. Y. 
Published: October 2019

The steady two-dimensional laminar forced flow and heat transfer of a viscous incompressible electrically conducting and heat-generating fluid past a permeable wedge embedded in non-Darcy high-porosity ambient medium with uniform surface heat flux has been studied. The governing equations are derived using the usual boundary layer and Bossinesq approximations and accounting for the applied magnetic filed, permeability of porous medium, variable porosity, inertia and heat generation effects. These equations and boundary conditions are non-dimenstionalized and transformed using non-similarity transformation. The resulting non-linear partial differential equations are then solved numerically subject to the transformed boundary conditions by a finite difference method. Comparisons with previously published works are performed and the results are found to be in excellent agreement. Numerical and graphical results for the velocity and temperature profiles as well as the skin friction and Nusselt number are presented and discussed for various parametric conditions.
MHD Flow past a Semi-Infinite Vertical Plate with Mass Transfer
Authors: Palani G. , Srikanth U. 
Published: October 2019

An analysis is performed to study the MHD flow of an electrically conducting, incompressible, viscous fluid past a semi-infinite vertical plate with mass transfer, under the action of transversely applied magnetic field is carried out. The heat due to viscous dissipation and the induced magnetic field are assumed to be negligible. The dimensionless governing equations are unsteady, two-dimensional, coupled and non-linear partial differential equations. A most accurate, unconditionally stable and fast converging implicit finite difference scheme is used to solve the non-dimensional governing equations. The effects of external cooling (Gr > 0) of the plate by the free convection are studied.
Da pluralidade à singularidade: Pressupostos teóricos para uma bioética em Ricœur
Authors: Gubert Paulo Gilberto , Bonhemberger Marcelo 
Published: October 2019

O pensamento filosófico na atualidade é caracterizado pela diversidade e pela pluralidade, o que permite interpretações singulares acerca do julgamento moral, como no caso da bioética. Considerando a especificidade das interpretações, o propósito deste artigo é apresentar pressupostos para pensar a bioética a partir da filosofia de Ricœur. Embora o filósofo tenha procurado elaborar uma ética, a bioética esteve sempre em seu horizonte, sendo designada ou de forma fragmentária, pelo conceito de éticas regionais, ou de forma robusta, como sabedoria prática.
Guillain-Barré Syndrome During Platinum-Based Chemotherapy: A Case Series and Review of the Literature
Authors: Pappa Evangelia , Berzero Giulia , Herlin Bastien , Ricard Damien , Tafani Camille , Devic Perrine , Maillet Denis , Borden Alaina , Viala Karine , Maisonobe Thierry , Lenglet Timothée , Weiss Nicolas , Psimaras Dimitri 
Published: October 2019

Abstract

Platinum-based chemotherapy is commonly associated with toxic sensory neuropathies, but also, although rarely, with Guillain-Barré syndrome (GBS). We describe five patients who developed GBS while receiving platinum-based chemotherapy for a solid tumor and report the five cases published so far. Most patients had received cumulative platinum doses below known neurotoxic levels, and all of them had an optimal outcome after platinum discontinuation, associated in most cases with administration of intravenous immunoglobulin. Clinical presentation, electroneuromyography, and cerebrospinal fluid analysis help clinicians to differentiate GBS from toxic neuropathy. Platinum compounds are the only chemotherapeutic agents used for solid tumors that have been associated to GBS. Thus, we propose that GBS may constitute a non–dose-dependent side effect of platinum drugs and that awareness needs to be raised among oncologists on this rare but potentially life-threatening complication of platinum chemotherapy.
BEŞİNCİ SINIF ÖĞRENCİLERİNİN BİYOÇEŞİTLİLİK KONUSUNU ANLAMALARI ÜZERİNE KAVRAM KARİKATÜRLERİNİN ETKİSİ
Authors: ARTUN Hüseyin , GÜLSEVEN Emine , TEMUR Atilla 
Published: October 2019

Eğitimde
görsel materyallerin kullanımı oldukça önem kazanmıştır. Bu materyallerden biri
de kavram karikatürleridir. Karikatürler, durumların ve kişilerin eleştirisini
sert biçimde değil, mizah unsuru yardımıyla komikliği de içererek eleştirel
yaklaşımla ele alan görsel açıdan zengin materyallerdir. Bu araştırmada da, beşinci
sınıf öğrencilerinin Fen Bilimleri dersinde kavram karikatürleri ile
desteklenmiş öğrenme ortamının biyoçeşitlilik konusunu anlamaları üzerine
etkisinin incelenmesi amaçlanmıştır. Araştırmada ön test-son test kontrol
gruplu yarı deneysel desen kullanılmıştır. Araştırmanın uygulaması, 2017-2018
eğitim öğretim yılı bahar döneminde Van ili İpekyolu ilçesinde yer alan bir
merkez ortaokulunun 5. sınıfında öğrenim gören toplam 50 öğrenciyle yürütülmüştür.
Biyoçeşitlilik konusunun öğretimi kontrol grubunda sadece fen bilimleri öğretim
programında yer alan etkinlikler ile deney grubunda ise mevcut öğretim programı
kavram karikatürleriyle desteklenerek yapılmıştır. Araştırmanın verileri,
biyoçeşitlilik konusuna ilişkin hazırlanan ön test ve son test olarak uygulanan
açık uçlu 10 sorudan oluşan “Biyoçeşitlilik Konusu Başarı Testi (BİKBAT)” ile elde edilmiştir. Araştırmanın verileri
SPSS 20 bilgisayar programı ile analiz edilmiştir. Anlama düzeyleri tablosu
kullanılarak BİKBAT’ tan elde edilen veriler SPSS 20 programı kullanılarak
çeşitli istatiksel analizler yapılmıştır. Bu analizler arasında bağımsız
gruplar Mann-Whitney U testi, bağımsız t-testi, bağımlı t-testi ve Wilcoxon
işaretli sıralar testi kullanılmıştır. Yapılan analizler sonucu kavram
karikatürleriyle öğrenim gören deney grubu öğrencilerinin daha başarılı olduğu belirlenmiştir.
Okul Öncesi Öğrencilerinin Programın Kazanımlarına Ulaşma Durumlarının Değerlendirilmesine İlişkin Bir Model Önerisi
Authors: Yiğit Celal , Özyurt Melike , Adıyaman Hatice 
Published: October 2019

Bu araştırmada okul öncesi eğitim programının değerlendirme basamağı
için alternatif bir değerlendirme modeli önerilmiş ve öğretmenlerin önerilen
değerlendirme modeli ve mevcut değerlendirme uygulamalarına ilişkin
görüşlerinin tespit edilmesi amaçlanmıştır Araştırma, karşılaştırmalı durum
çalışması olarak desenlenmiştir. Araştırmanın çalışma grubunu, 2015-2016
Eğitim-Öğretim Yılı'nda Gaziantep il merkezinde özel bir ilkokulun anasınıfında
görev yapan 14 öğretmen oluşturmaktadır. Araştırmanın verileri çalışma grubu
ile görüşmeler yapılarak toplanmıştır. Araştırmada veri toplama aracı olarak
araştırmacılar tarafından geliştirilen “Karşılaştırmalı Değerlendirme Formu” ve
“Değerlendirme Uygulamalarına İlişkin Öğretmen Görüşme Formu”
kullanılmıştır. Karşılaştırmalı
Değerlendirme Formu bireysel görüşmelerle, Değerlendirme Uygulamalarına İlişkin
Öğretmen Görüşme Formu ise odak grup görüşmesi ile öğretmenlere uygulanmıştır.
Bireysel görüşmeler ile elde edilen verilerin analizinde betimsel analiz
tekniği, odak grup görüşmelerinden elde edilen verilerin analizinde ise içerik
analizi uygulanmıştır. Araştırma sonucunda Önerilen Değerlendirme Modeli ile
Mevcut Değerlendirme Uygulamalarında tespit edilen birçok eksiklik ve
aksaklığın giderilmiş olduğu tespit edilmiştir. Ayrıca Önerilen Değerlendirme
Modelinin öğretmen görüşlerine göre okul öncesi eğitim programının ölçme değerlendirme
uygulamaları kapsamında, ihtiyaca cevap veren, yeterli bir model olduğu ancak
modelin öğrencilerin ilgi ve yeteneklerini keşfetmede yeterli veri sağlama
konusunda geliştirilmesi gerektiği belirlenmiştir.