bluuebunny/crossref_metadata_2025_split huggingface dataset:
Low cost Real Time Centralized Speed Control of DC Motor Using Lab view -NI USB 6008
Authors: Bharatiraja C. , Munda JL , Vaghasia Ishan , Valiveti Rajesh , Manasa P. 
Published: December 2016

The DC motors an outstanding portion of apparatus in automotive and automation industrial applications requiring variable speed and load characteristics due to its ease of controllability. Creating an interface control system for multi DC motor drive operations with centralized speed control, from small-scale models to large industrial applications much demand. By using Lab VIEW (laboratory virtual instrument engineering workbench) as the motor controller, can control a DC motor for multiple purposes using single software environment. The aim of this paper is to propose the centralized speed control of DC motor using Lab VIEW. Here, the Lab VIEW is used for simulating the motor, whereas the input armature voltage of the DC motor is controlled using a virtual Knob in Lab VIEW software. The hardware part of the system (DC motor) and the software (in personal computer) are interfaced using a data acquisition card (DAQ) -Model PCI- 6024E. The voltage and Speed response is obtained using LABVIEW software. Using this software, group of motors’ speed can be controlled from different location using remote telemetry. The propose work also focuses on controlling the speed of the individual DC motor using PWM scheme (Duty cycle based Square wave generation) and DAQ. Help of the DAQ along with Lab VIEW front panel window, the DC motor speed and directions can be change easily in remote way. In order to test the proposed system the laboratory model for an 80W DC motor group (multi drive) is developed for different angular displacements and directions of the motor. The simulation model and experimental results conforms the advantages and robustness of the proposed centralized speed control.
Self-Tuning Fuzzy Based PI Controller for DFIM Powered by Two Matrix Converters
Authors: Alalei Abdelhakim , Hazzab Abdeldjebar , Nesba Ali 
Published: December 2016

This paper presents a study of the Doubly Fed Induction Machine (DFIM) powered by two matrix converters; one connected to the stator windings and the other connected to the rotor windings. First, the mathematical model of DFIM and those of the matrix converters are developed. Then, the vector control technique is applied to the DFIM. Fuzzy logic is used in order to automatically adjust the parameters of the PI controller. The performance of this structure under different operating conditions is studied. Particular interest is given to the robustness of the fuzzy logic based control. The operation of the DFIM under overload conditions is also examined. Simulation results obtained in MATLAB/Simulink environment are presented and discussed.
Intelligent Control for Doubly Fed Induction Generator Connected to the Electrical Network
Authors: Bakouri Anass , Mahmoudi Hassane , Abbou Ahmed 
Published: December 2016

<p><span lang="EN-US">In this paper we are interested in optimizing the wind power capture, using the Doubly Fed Induction Generator (DFIG). This machine is preferred to other types of variable speed generator because of their advantages in economic terms and control. The Artificial Neural Network (ANN) based on Direct Torque Control (DTC) which is used to control the electromagnetic torque in order to extract the maximum power, The main objective of this intelligent technique is to replace the conventional switching table by a voltage selector based on (ANN) to reduce torque and flux ripples. Moreover, the fuzzy logic controller is used to grid side converter to keep DC link voltage constant, and also to achieve unity power factor operation. The main advantage of the two control strategies proposed in this paper is that they are not influenced by the variation of the machine parameter. The pitch control is also presented to limit the generator power at its rated value. Simulation results of 1,5 MW, for (DFIG) based Wind Energy Conversion System (WECS) confirm the effectiveness and the performance of the global proposed approaches.</span></p>
A new Backstepping Sliding Mode Controller applied to a DC-DC Boost Converter
Authors: Massaoudi Yosra , Elleuch Dorsaf , Gaubert Jean Paul , Mehdi Driss , Damak Tarak 
Published: December 2016

In order to deal with the boost converter non minimum phase property and to solve the Sliding Mode Control (SMC) major problem (the chattering phenomenon), a new backstepping Sliding Mode Controller is developed. In this paper, a comparative study between the proposed controller and the (2-SMC)super twisting and the classical SMC is provided in order to evaluate each controller. Simulations and experimental results show the effectiveness and the robustness of the proposed controller with respect to load variation.
Compensator Based Perfromance Enhancement Strategy for a SIQO Buck Converter
Authors: Lindiya Augusti , Palani S , Vijayarekha K 
Published: December 2016

<span>This paper attempts to design lag and lag-lead compensators for improving the performance of a Single Inductor Quad Output (SIQO) dc-dc buck converter in terms of time domain and frequency domain specifications. It develops the state space averaged model to find the duty ratio of the desired output voltages at steady state. The exercise arrives at the transfer function model from the state space averaged model through the use of its lumped small signal equivalent circuit which allows analyzing the performance of the system in frequency and time domains. The responses are derived in the MATLAB/Simulink® using discrete components incorporating compensators of the converter. The hardware results obtained using Data Acquisition Module DT9834® interfaced to MATLAB/Simulink® and prototype model establish the performance of the compensator based converter and further emphasize its ability to minimize the ripples over a range of operating loads. </span>
Proposed PV Transformer-Less Inverter Topology Technique for Leakage Current Reduction
Authors: Khan M. N. H. , Delwar M.H. , Kabir Md. A. , Zahan M.S. , Ahmad K. J. , Alam M. M. , Anower M. T. 
Published: December 2016

Importance and demand of using renewable energy is dramatically escalated globally. Hence, the use of renewable energy is going to touch in peak. This demand is varying according to the site choosing. For instance, Wind is preferable where air is following highly as well as solar recommended place is high sun ray reducing places. Especially, the renewable system is highly recommended for electrification issues where it’s possible to produce the electricity for fulfilling rural and remote areas electricity problem. The photovoltaic (PV) panel of connecting with transformer based system is popular where some limitations are occurred especially cost and weight. In contrast, in this paper is focusing these issues where the transformer-less inverter system is used. Here will discuss some transformer-based and transformer-less inverter topologies and the leakage current issue which is occurred when transformer-less inverter system is used. Moreover, here is proposed a topology for reducing the leakage current after doing switching technique in both 50% and 75% duty cycle where output voltage remains quite same.
Implementation of a MIMO system for Wireless Power Transfer Using Acoustic Approach
Authors: Zaid Thoriq , Saat Shakir , Jamal Norezmi , Husin Siti Huzaimah , Yusof Yusmarnita , Nguang SK 
Published: December 2016

<span>This paper presents a development of Acoustic energy transfer (AET) system through the air medium by implementing a Multiple Input-Multiple Output (MIMO) arrangement of transducers to transmit energy. AET system allows power to be transmitted without wire connection. The MIMO system is proposed in this paper to increase the efficiency of the transmitting power by multiplying the received power. The simulation and experimental works are carried out using a Class E power converter and the obtained results are analyzed accordingly. Based on the experimental results, the 18.57mW output power is obtained at 40kHz operating frequency when triple transducer is used. It contributes to 30.96% efficiency to the power transfer system.</span>
A Review on Design and Development of high Reliable Hybrid Energy Systems with Droop Control Techniques
Authors: Rao G. Srinivasa , Reddy K. Harinadha 
Published: December 2016

<p>Hybrid Energy system is a combination of two or more different types of energy resources. Now a day this hybrid energy system plays key role in various remote area power applications. Hybrid energy system is more reliable than single energy system. This paper deals with high reliable hybrid energy system with solar, wind and micro hydro resources. The proposed hybrid system cable of multi mode operation and high reliable due to non communicated based controllers (Droop Characteristic Control) are used for optimal power sharing. size of battery can be reduced because hydro used as back up source and Maximum power point Tracking also applied to solar and wind energy systems.</p>
Línguas Maternas: sobre a Convivência do Judeu-Espanhol com o Hebraico em Israel
Authors: Held Michal 
Published: January 2017

Este artigo dispõe-se a explorar e interpretar narrativas pessoais de mulheres falantes do judeu-espanhol, criadas na atmosfera cultural e linguística na atualidade israelense. A pesquisa é baseada num enfoque que define a narrativa pessoal como multifacetada e portanto utiliza ferramentas multidisciplinares para examinar o material coletado numa perspectiva linguística, literária, folclórica, antropológica e sociológica. As narrativas, assim como a atividade do grupo que serve de estrutura conceitual devem ser considerados à luz da definição de Benedict Anderson para uma “comunidade imaginária”, como a reconstrução do imaginário do judeu-espanhol, tido como uma identidade imaginária baseada numa cultura que virtualmente não tem função hoje em dia. Do aspecto da etnicidade a principal questão é se e como as narrativas pessoais criadas por mulheres falantes do judeu-espanhol aqui e agora refletem a identidade coletiva e as concepções do grupo étnico sefardita.
Educação Clandestina no Gueto de Varsóvia: Cantinas-Escola Como Espaço de Resistência
Authors: Souza Nanci 
Published: January 2017

Esta comunicação apresenta alguns resultados da pesquisa de mestrado a respeito da educação enquanto forma de resistência. O objeto deste estudo é o ensino elementar clandestino, posto em prática pelos educadores logo após o fechamento do gueto de Varsóvia, época em que as crianças e jovens vivenciavam situações extremas de intolerância. A partir de registros de época, procurou-se conhecer as estratégias direcionadas para preservar os judeus como povo,visto que esses estavam condenados ao extermínio pelos nazistas. Constatou-se que a educação, em distintos momentos e espaços clandestinos, serviu para garantir o mínimo de dignidade, fosse física ou cultural, aos judeus excluídos pelos nazistas como “raça inferior”. Como espaço de resistência, tem-se como exemplo as cantinas-escola da Rua Karmelicka n° 29, da Rua Krochmalna n° 36 e da Rua Nowolipki n° 68, nas quais foram implementadas o Programa dos Cursos Clandestinos sob a tutela da instituição de ensino TsYShO. A relevância deste estudo está em analisar a ação daqueles que se encontravam degradados da condiçãohumana, que buscavam, por meio da educação clandestina, fazer frente aos conceitos nazistas, preservando sua dignidade e defendendo sua própria ideologia, vinculada a sua sobrevivência e a sua continuidade como indivíduos e como povo.
Quatro décadas de Piano em Grupo no Brasil (1973-2013): Entrevista com Marion Verhaalen
Authors: Machado Simone Gorete 
Published: January 2017

A entrevista com a professora norte-americana Marion Verhaalen, uma das pioneiras na introdução do Piano em Grupo no nosso país, fornece informações importantes para a compreensão de aspectos relevantes da metodologia de ensino de Piano em Grupo bem como a respeito dos primórdios dessa modalidade de ensino de música no Brasil.
Encontros com François Lesure
Authors: Lesure François , Martins José Eduardo 
Published: January 2017

Aos 9 de outubro de 1997 deu-se o encontro com François Lesure no auditório do Departamento de Música da ECA-USP. Foi a terceira visita do ilustre visitante ao Departamento. Em 1988, fixava, em palestra, bases sólidas para aquele que viria a ser o Mestrado em Musicologia do Departamento de Música; no ano de 1990 foram novas palestras abordando temáticas pertinentes ao curso e às suas próprias especialidades. 1997 marcou a terceira estada em São Paulo quando, a convite da Universidade de São Paulo, François Lesure integrou, como membro estrangeiro, a equipe que avaliou o Departamento de Música. A este último seguiu-se a gravação de quatro programas na Rádio USP-FM, por nós apresentados todas as terças-feiras, às 22 horas, e que foram ao ar em novembro de 97, sendo que, na ocasião, François Lesure abordou desde a sua trajetória como, igualmente, temas aos quais se dedicou. As gravações de ambas as atividades foram traduzidas, buscando o tradutor, na medida do possível, conservar o espontâneo da oralidade. No decorrer do encontro ou da entrevista, François Lesure mencionou algumas de suas obras ou temática pertinente a uma delas. No final, apresentamos bibliografia significativa do autor, a fim de melhor orientar o leitor.
Selection of Critical Isthmus in Scar-Related Atrial Tachycardia Using a New Automated Ultrahigh Resolution Mapping System
Authors: Laţcu Decebal Gabriel , Bun Sok-Sithikun , Viera Frédéric , Delassi Tahar , El Jamili Mohammed , Al Amoura Alaa , Saoudi Nadir 
Published: December 2016

Background—
Accurate activation mapping of reentrant scar-related atrial tachycardias (AT) allows efficient radiofrequency ablation by targeting the critical isthmus (CI). We aimed to assess the electrophysiological properties of CI channels during mapping with the IntellaMap Orion basket and the Rhythmia system.

Methods and Results—

We prospectively studied 33 AT (post– atrial fibrillation ablation or surgical mitral valve repair). The noise of bipolar electrogram (EGM) was systematically measured at 10 prespecified sites, as well as on a standard catheter and on the surface ECG. Bipolar EGM of CI regions were analyzed for amplitude, duration, and conduction velocity. The isthmus region to be targeted was chosen based solely on propagation. For each AT, 25 684±14 276 EGMs were automatically annotated. Noise of the Orion EGM was 0.011±0.004 mV, lower than that of a standard catheter (0.016±0.019) and surface ECG (0.02±0.01;
P
<0.05). For reentrant AT, within the CI, bipolar EGM amplitude (0.08±0.11 mV) and conduction velocity (0.27±0.19 m/s) were lower than those orthodromically before (0.62±0.93 mV; 1±0.49 m/s) and after (0.80±1.59 mV; 1±0.73 m/s) the isthmus (
P
<0.001 for all). In 97% of AT, ablation at the CI resulted in AT termination. No complications occurred.

Conclusions—
This new automated ultrahigh resolution mapping system produces low noise and allows accurate diagnosis of AT circuits. CI on reentrant scar-related AT showed much lower EGM amplitude with a significantly slower conduction velocity than the surrounding parts of the circuit. Ablation of the areas of slow conduction resulted in a high acute success.
Association of Rate-Dependent Conduction Block Between Eccentric Coronary Sinus to Left Atrial Connections With Inducible Atrial Fibrillation and Flutter
Authors: Huang Dong , Marine Joseph E. , Li Jing-bo , Zghaib Tarek , Ipek Esra Gucuk , Sinha Sunil , Spragg David D. , Ashikaga Hiroshi , Berger Ronald D. , Calkins Hugh , Nazarian Saman 
Published: December 2016

Background—
We sought to describe the prevalence and variability of coronary sinus (CS) and left atrial (LA) myocardium connections, their susceptibility to rate-dependent conduction block, and association with atrial fibrillation (AF) and flutter induction.

Methods and Results—

The study cohort included 30 consecutive AF patients (age 63.3±10.5 years, 63% male). Multipolar catheters were positioned in the CS, high right atrium (HRA), and LA parallel to and near the CS. Trains of 10 pacing stimuli were delivered during sinus rhythm from each of the following sites: CS proximal (CS
p
), CS distal (CS
d
), LA septum (LA
s
), lateral LA (LA
l
), and HRA, at the following cycle lengths: 1000, 500, 400, 300, and 250 ms, while recording from the other catheters. With the CS 9 to 10 bipole just inside the CS ostium, CS–LA connections were observed in 100% at CS 9 to 10, 30% at CS 7 to 8, 23% at CS 5 to 6, 23% at CS 3 to 4, and 97% at CS 1 to 2. Eighteen patients (60%) had AF/atrial flutter induced. Rate-dependent conduction block of a CS–LA connection at cycle length of ≥250 ms was present in 17 (94%) of those with versus none of those without AF/atrial flutter induction (
P
<0.001).

Conclusions—
Rate-dependent eccentric CS–LA conduction block is associated with AF/atrial flutter induction in patients with drug-refractory AF undergoing ablation. The presence of dual muscular CS–LA connections, coupled with unidirectional block in one limb, seems to serve as a substrate for single or multiple reentry beats, and arrhythmia induction.
Impact of Cerebrovascular Events Older Than One Year on Ischemic and Bleeding Outcomes With Cangrelor in Percutaneous Coronary Intervention
Authors: Sawlani Neal N. , Harrington Robert A. , Stone Gregg W. , Steg Ph. Gabriel , Gibson C. Michael , Hamm Christian W. , Price Matthew J. , Prats Jayne , Deliargyris Efthymios N. , Mahaffey Kenneth W. , White Harvey D. , Bhatt Deepak L. 
Published: December 2016

Background—
Cangrelor is a potent intravenous adenosine diphosphate–receptor antagonist that in the CHAMPION trials reduced the 48-hour and 30-day rates of ischemic events during percutaneous coronary intervention without an increase in severe bleeding.

Methods and Results—

CHAMPION PCI (A Clinical Trial to Demonstrate the Efficacy of Cangrelor), CHAMPION PLATFORM (Cangrelor Versus Standard Therapy to Achieve Optimal Management of Platelet Inhibition), and CHAMPION PHOENIX (A Clinical Trial Comparing Cangrelor to Clopidogrel Standard Therapy in Subjects Who Require Percutaneous Coronary Intervention) were 3 randomized, double-blind, double-dummy trials in which cangrelor was compared with clopidogrel during percutaneous coronary intervention. The effect of cangrelor on ischemic events and bleeding was analyzed in the subgroup of patients with a history of cerebrovascular events at least 1 year prior to randomization; the Breslow–Day test was used to test for interaction of treatment effect in subgroups with and without such a history. The primary efficacy end point was a composite of death, myocardial infarction, ischemia-driven revascularization, or stent thrombosis at 48 hours. Among 24 910 randomized patients, 1270 patients (5.1%) had a cerebrovascular event >1 year old, including 650 assigned to cangrelor and 620 assigned to clopidogrel. Consistent with the overall trial results, the rate of the primary efficacy end point was 4.3% in the cangrelor group versus 5.3% in the clopidogrel group (odds ratio 0.80; 95% confidence interval 0.48–1.34;
P
=0.40;
P
for interaction =0.97), and the rate of GUSTO (Global Use of Strategies to Open Occluded Coronary Arteries) severe bleeding was 0.3% in both groups (
P
=0.97;
P
for interaction =0.81).

Conclusions—
Among patients in the CHAMPION trials with a prior cerebrovascular event at least 1 year before the percutaneous coronary intervention, the efficacy and bleeding profile of cangrelor compared with clopidogrel was similar to that in the overall trial.
Role of Diastolic Stress Testing in the Evaluation for Heart Failure With Preserved Ejection Fraction
Authors: Obokata Masaru , Kane Garvan C. , Reddy Yogesh N. V. , Olson Thomas P. , Melenovsky Vojtech , Borlaug Barry A. 
Published: December 2016

Background:
Diagnosis of heart failure with preserved ejection fraction (HFpEF) is challenging and relies largely on demonstration of elevated cardiac filling pressures (pulmonary capillary wedge pressure). Current guidelines recommend use of natriuretic peptides (N-terminal pro-B type natriuretic peptide) and rest/exercise echocardiography (E/e′ ratio) to make this determination. Data to support this practice are conflicting.

Methods:
Simultaneous echocardiographic-catheterization studies were prospectively conducted at rest and during exercise in subjects with invasively proven HFpEF (n=50) and participants with dyspnea but no identifiable cardiac pathology (n=24).

Results:

N-Terminal pro-B type natriuretic peptide levels were below the level considered to exclude disease (≤125 pg/mL) in 18% of subjects with HFpEF. E/e′ ratio was correlated with directly measured pulmonary capillary wedge pressure at rest (
r
=0.63,
P
<0.0001) and during exercise (
r
=0.57,
P
<0.0001). Although specific, current guidelines were poorly sensitive, identifying only 34% to 60% of subjects with invasively proven HFpEF on the basis of resting echocardiographic data alone. Addition of exercise echocardiographic data (E/e′ ratio>14) improved sensitivity (to 90%) and thus negative predictive value, but decreased specificity (71%).

Conclusions:
Currently proposed HFpEF diagnostic guidelines on the basis of resting data are poorly sensitive. Adding exercise E/e′ data improves sensitivity and negative predictive value but compromises specificity, suggesting that exercise echocardiography may help rule out HFpEF. These results question the accuracy of current approaches to exclude HFpEF on the basis of resting data alone and reinforce the value of exercise testing using invasive and noninvasive hemodynamic assessments to definitively confirm or refute the diagnosis of HFpEF.

Clinical Trial Registration:

URL:
http://www.clinicaltrials.gov
. Unique Identifier: NCT01418248.
Endoscopic Management of Subglottic Stenosis with the CO2 Surgical Laser
Authors: Koufman James A. , Thompson James N. , Kohut Robert I. 
Published: January 2017

Recent advances in microsurgery of the larynx have heralded a new era in the endoscopic management of subglottic stenosis. The carbon‐dioxide laser with bronchoscopic adapters can be successfully employed to reestablish an adequate subglottic lumen.Thirteen cases of subglottic stenosis were managed endoscopically with the carbon dioxide surgical laser. In 77% (10 of 13) of these patients, a satisfactory airway was reestablished within a one‐year period. The technique of laser vaporization and the results of treatment are presented. The role of corticosteroid therapy, antibiotic therapy, tracheotomy, dilation, and laryngeal stenting is discussed.
A Study of the Premature Neonatal Airway
Authors: Fishman Robert A. , Pashley Nigel R.T. 
Published: January 2017

Children born prematurely are now enjoying improved survival with advances in neonatology and ventilatory support.A study of upper airway size in specimens from 39 prematurely born children reveals 7.7% having a cricoid ring diameter greater or equal to the diameter of the tracheal rings. The more commonly expected relationship of the cricoid ring being smaller than the tracheal rings existed in the rest.This may be of importance in instrumentation or intubation of the airway in premature neonates.The gestational age was a better indicator of cricoid ring diameter than birth weight. From these findings a formula for reliably predicting the cricoid diameter is proposed, aiding the clinician in endotracheal tube or airway instrument selection.The combined lung weights were directly related to airway diameter irrespective of measurements of tracheal or cricoid rings. This has not been previously reported and would imply the existence of laryngo‐tracheo‐broncho‐pulmonary hypoplasia in the premature infant.