bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH LEVEL FILTRAT KECAMBAH KACANG HIJAU DALAM PENGENCER SUSU SKIM TERHADAP KUALITAS SEMEN CAIR PEJANTAN SAPI MADURA PADA PENYIMPANAN SUHU RUANG
Authors: Anastasia Yulia Indri , Isnaini Nurul , Wahjuningsih Sri
Published: July 2017

Â Â Â Â Â Â Â Â Â Â Â Â  Tujuan dari penelitian ini yaitu untuk mengevaluasi pengaruh penambahan filtrat kecambah kacang hijau dalam pengencer susu skim terhadap kualitas spermetozoa pejantan sapi Madura pada penyimpanan suhu ruang. Materi dalam penelitian ini adalah semen segar sapi Madura berusia 6-11 tahun dengan persentase motilitas 50-65% diambil dari Balai Besar Inseminasi Buatan Singosari, Malang. Metode yang digunakann dalam penelitian ini adalah percobaan di laboratorium dengan rancangan acak kelompok yang terdiri dari empat level penambahan filtrat kecambah kacang hijau yaitu 0%, 2%, 4%, dan 6% dari jumlah 1ml pengencer susu skim dengan masing-masing 7 pengulangan dan disimpan pada suhu kamar selama 6 jam, setiap 2 jam dilakuakan evaluasi kualitas semen cair yaitu motilitas, viabilitas dan abnormalitas spermatozoa.Hasil penelitian menunjukkan bahwa pengaruh level penambahan filtrat kecambah kacang hijau dalam pengencer susu skim pada penyimpanan suhu ruang tidak memberikan perbedaan yang signifikan (P> 0,05) padamotilitas, viabilitas, dan abnormalitas spermatozoa.Â Kata kunci: semen cair, susu skim, filtrat kecambah kacang hijau, penyimpanan suhu ruang
Um Supremo e duas medidas: uma análise comparada dos casos Lula e Moreira Franco
Authors: De Souza Rafael Bezerra
Published: July 2017

Os casos Lula e Moreira Franco abordaram questões semelhantes e explicitaram comportamentos institucionais destoantes por parte de dois experientes ministros da Corte Constitucional brasileira. Diante da relevância dos referidos julgados e dos seus desdobramentos para a compreensão do papel do Supremo Tribunal Federal na atual quadra da história brasileira, principalmente após recentes e profundas rupturas institucionais, faz-se necessária uma análise comparada das decisões em comento acerca de três de seus aspectos: a) a utlização do mandado de segurança coletivo por partdos políticos; b) o desvio de finalidade de nomeação do presidente da República para cargo na Alta Administração Pública e c) o uso do foro privilegiado como “blindagem jurídica”.
Precedente constitucional e constitucionalismo político: um estudo comparado do precedente a partir da constituição britânica
Authors: Muniz da Conceição Lucas Henrique
Published: July 2017

RESUMO:

O presente artigo analisa a perspectiva crítica do constitucionalismo político, no Reino Unido, em conluio com a consideração dos precedentes enquanto fonte normativa. Dessa forma, busca-se fomentar a análise crítica do precedente constitucional no paradigma brasileiro, assim como as repercussões institucionais que envolvem não só o poder Judiciário, mas também o Poder Legislativo e Executivo na definição de sentido e interpretação da Constituição. Desta feita, argumenta-se por uma relação construtiva de direitos entre os poderes do Estado que tenha por base os valores democráticos que estão na raiz do sistema constitucional brasileiro.

ABSTRACT:

This article analyzes the critical perspective of political constitutionalism in the United Kingdom and considers the role of precedents as a normative source. It seeks to promote a critical analysis of the constitutional precedent in the Brazilian context, as well as the institutional repercussions that involve not only the Judiciary but also the Legislative and Executive Powers in the definiton and interpretation of the Constitution. This paper argues in favor of a constructive relationship of rights between the branches of State power based on the democratic values that are at the heart of the Brazilian constitutional system.
Preliminares para la comprensión del concepto logos en el Comentario a Juan de Orígenes.
Authors: Soler Fernando
Published: July 2017

This paper deals with some essential considerations to understand the concept of ?ó???, present in Origen’s Commentary on John. These considerations begin with a brief approximation to the philosophical environment in which the Commentary is inserted, leading us to try to answer the question of how far gospels are a source for Origen’s thought. Next, an etymological approximation to the term ?ó??? will be made to describe its richness and, then, its use will be shown in both the Bible and some representatives of the Alexandrian Patristic tradition previous to Origen. Finally, we will briefly stop in Philo who, although being previous to Patristic authors, has a key influence on Origenian thought.
¿Por qué es importante la mujer para la iglesia? El rol de la mujer en la iglesia y su importancia para la fe cristiana a partir de la obra la mujer de Edith Stein.
Authors: García P. Rafael
Published: July 2017

The role and importance of women in the Catholic Church is a subject that must be necessarily consider at this time of our history, particularly due to the fact of being embedded in the context of a largely female ecclesial community and a western society that has taken important steps in the path of justice and gender equality. This paper, therefore, seeks to speak not only about this evident reality, but to wonder –from Edith Stein’s ideas and the paradigmatic figure of Mary the Nazarene- if it is possible to make a new reading of women’s current role starting from a theology that puts its attention in the nature of the One and Triune God and, from there, to question the current conditions and structures of the Church for the women of our time.
A novel supply voltage compensation circuit for the inverter switching point
Authors: Antonescu Alexandru-Mihai , Dobrescu Lidia
Published: July 2017

The present work proposes an innovative circuit that is able to compensate
the inverter switching point voltage variation due to supply voltage change.
The circuit is designed to work for a 1.6V to 2V supply voltage range. The
operation principle includes the back gate effect and an original transistor
switching.
Exact analytical solutions of continuously graded models of flat lenses based on transformation optics
Authors: Dalarsson Mariana , Mittra Raj
Published: July 2017

We present a study of exact analytic solutions for electric and magnetic
fields in continuously graded flat lenses designed utilizing transformation
optics. The lenses typically consist of a number of layers of graded index
dielectrics in both the radial and longitudinal directions, where the central
layer in the longitudinal direction primarily contributes to a bulk of the
phase transformation, while other layers act as matching layers and reduce
the reflections at the interfaces of the middle layer. Such lenses can be
modeled as compact composites with continuous permittivity (and if needed)
permeability functions which asymptotically approach unity at the boundaries
of the composite cylinder. We illustrate the proposed procedures by obtaining
the exact analytic solutions for the electric and magnetic fields for one
simple special class of composite designs with radially graded parameters. To
this purpose we utilize the equivalence between the Helmholtz equation of our
graded flat lens and the quantum-mechanical radial Schr?dinger equation with
Coulomb potential, furnishing the results in the form of Kummer confluent
hypergeometric functions. Our approach allows for a better physical insight
into the operation of our transformation optics-based graded lenses and opens
a path toward novel designs and approaches.
NADPH Oxidase Nox5 Accelerates Renal Injury in Diabetic Nephropathy
Authors: Jha Jay C. , Banal Claudine , Okabe Jun , Gray Stephen P. , Hettige Thushan , Chow Bryna S.M. , Thallas-Bonke Vicki , De Vos Lisanne , Holterman Chet E. , Coughlan Melinda T. , Power David A. , Skene Alison , Ekinci Elif I. , Cooper Mark E. , Touyz Rhian M. , Kennedy Chris R. , Jandeleit-Dahm Karin
Published: July 2017

NADPH oxidase–derived excessive production of reactive oxygen species (ROS) in the kidney plays a key role in mediating renal injury in diabetes. Pathological changes in diabetes include mesangial expansion and accumulation of extracellular matrix (ECM) leading to glomerulosclerosis. There is a paucity of data about the role of the Nox5 isoform of NADPH oxidase in animal models of diabetic nephropathy since Nox5 is absent in the mouse genome. Thus, we examined the role of Nox5 in human diabetic nephropathy in human mesangial cells and in an inducible human Nox5 transgenic mouse exposed to streptozotocin-induced diabetes. In human kidney biopsies, Nox5 was identified to be expressed in glomeruli, which appeared to be increased in diabetes. Colocalization demonstrated Nox5 expression in mesangial cells. In vitro, silencing of Nox5 in human mesangial cells was associated with attenuation of the hyperglycemia and TGF-β1–induced enhanced ROS production, increased expression of profibrotic and proinflammatory mediators, and increased TRPC6, PKC-α, and PKC-β expression. In vivo, vascular smooth muscle cell/mesangial cell–specific overexpression of Nox5 in a mouse model of diabetic nephropathy showed enhanced glomerular ROS production, accelerated glomerulosclerosis, mesangial expansion, and ECM protein (collagen IV and fibronectin) accumulation as well as increased macrophage infiltration and expression of the proinflammatory chemokine MCP-1. Collectively, this study provides evidence of a role for Nox5 and its derived ROS in promoting progression of diabetic nephropathy.
Mode filling factor of a laser with end-pumped configuration
Authors: Han Juhong , Wang You , Wang Shunyan , Yu Hang , Rong Kepeng , Zhang Wei , Cai He , An Guofei , Wang Hongyuan , Xue Liangping , Zhou Jie
Published: July 2017

The mode filling factor is an important parameter especially in designing an end-pumped laser system. Although the end-pumped structure has been used for several decades, an overlap coefficient is often confused by many laser technicians. So far, there have usually been several conventional expressions using different formulae. A researcher often puzzles by some problems such as “which equation is a suitable one” and “how accurate the equation is.” Thus, it is necessary to construct a precise theory to systematically analyze the mode filling factor and investigate the difference among several traditional repressions. In this paper, an analytical model is first developed to study the mode filling factor for a pump beam and a laser beam with the modes in any order numbers. Then, several cases are discussed in which a pump beam and a laser beam are with a fundamental mode and a high-order mode as well as a hybrid mode, respectively. It has been demonstrated that the nonignorable deviation in the mode filling factor will occur if the conventional expression for both the pump and laser beams with fundamental modes is used to describe the case in which the pump and laser beams are with high-order transverse-modes. Similar analyses have been rare so far to the best of our knowledge. The theoretical conclusion in this paper is thought to be valuable in the design of an end-pumped laser system.
EDITORIAL
Authors: RAMOS Rosinda De Castro Guerra , ARAÚJO Marcus De Souza , TANZI NETO Adolfo
Published: July 2017

Em tempos de era digital, a escola e a universidade precisam cada vez mais repensar em incorporar as tecnologias digitais da informação e comunicação (TDIC) às necessidades atuais do aluno.  Daí a importância das TDIC se tornarem elos no ensino-aprendizagem, com a escola e a universidade repensando seus nichos na atualidade, ou seja, professores mudando procedimentos de ensino; currículos menos informativos e mais e flexíveis; aulas menos expositivas e mais desafiadoras; integração de projetos para compreender o quê e o porquê se aprende; alunos como centro da aprendizagem; tecnologias como aliadas e não à margem do processo educacional; entre outros fatores. Nessa direção, a escola e a universidade deveriam ser vistas como um espaço para os alunos aprenderem de forma contínua com o uso das TDIC. Pensando nessas questões é que abrimos a edição do volume deste ano com um número temático dedicado ao uso das TDIC e ao ensino-aprendizagem de línguas. O objetivo é apresentar propostas pedagógicas relacionadas a materiais educacionais digitais, no intuito de trazer contribuições de experiências e de investigação para a área de ensino-aprendizagem de línguas em contextos digitais.
PREPARAÇÃO DE MATERIAL DIDÁTICO PARA ENSINO DE LÍNGUAS COM BASE EM CORPORA
Authors: SARDINHA Tony Berber , DELFINO Maria Claudia Nunes , RAMPASO Marianne
Published: July 2017

O presente artigo tem por objetivo principal discutir a preparação de material didático para ensino de língua materna e estrangeira com base na Linguística de Corpus, com foco em alunos e professores de ensino básico, de idiomas e do ensino universitário. O texto tem como interlocutores principais os professores envolvidos no ensino que desejam desenvolver material de ensino que reflita o uso corrente da língua. A preparação de material baseada em corpus pode ser feita de diversas formas, tanto pelo professor quanto pelos alunos. No artigo, apresentamos sugestões de aplicação de corpora no ensino em torno de conceitos teóricos da Linguística de Corpus, quais sejam: probabilidade, padronização e variação. Espera-se que os conceitos bem como sua aplicação possam ser úteis ao ensino de línguas. O artigo inclui exemplos tanto de corpora online quanto de corpora produzidos pelos próprios professores.
APRENDENDO GREGO ANTIGO NO MUNDO DIGITAL DO TERCEIRO MILÊNIO
Authors: FERREIRA Anise D’ Orange
Published: July 2017

Este artigo mostra como a infraestrutura digital do terceiro milênio está afetando o emprego de materiais digitais de ensino de grego antigo. Dentro de uma abordagem com foco em ‘aprender fazendo’, apresenta os principais pressupostos do classicismo na era digital atual apontando o trabalho de alunos e professores como um meio de produzir dados para bancos de dados de língua e cultura grega, como a Biblioteca Digital Perseu, com serviços de consulta e pesquisa, contribuindo para a formação de corpora abertos de traduções em português de textos gregos. Tal produção pode-se dar na forma de edições digitais anotadas e com traduções alinhadas. Explica-se aqui uso da plataforma Perseids para anotação de árvores sintáticas de dependência do grego antigo (treebanking) e para edição de traduções paralelas alinhadas, propondo uma atividade utilizando as suas ferramentas Arethusa e Alpheios.
Analysis and Comparison Between Different Methods of Current Reference Generation for Active Filters Control.
Authors: S. Stefanescu  , M. Chindris  , A. Sudria  , A. Cziker
Published: July 2017

In modern distribution systems the proliferation of non-linear loads results in a deterioration of the quality of voltage waveforms at the point of common coupling (PCC) of various consumers. Therefore, power-conditioning equipment is becoming more important for electric utilities and their customers. With the rapid development of semiconductor devices in power and control circuits, a new generation of equipment for power quality, the active power filters, has been developed. Their advantages over conventional means are more flexibility and very fast control response.
The control of an active filter comprises two major parts: the reference current computation and the current control. There are two fundamental methods of generating the reference current: (i) frequency–domain methods, based on the Fourier analysis and (ii) time-domain analyze, based on the theory of instantaneous imaginary power in the three-phase circuits, often called p-q theory.
The paper begins by presenting the principle of active filtering and the basic instantaneous imaginary power theory. In the hypothesis of a distorted and/or unsymmetrical load voltage system, the p-q theory has proven limitations; consequently the paper reviews and evaluates other two reference current calculation methods. Finally a comparative analyze of the three methods features is carried out.
Impacts of Renewable Sources on Power Quality in Distribution Systems
Authors: Josep Balcells  , Jaroslav Doležal  , Josef Tlustý  , Viktor Valouch
Published: July 2017

This paper analyzes the influence of renewable sources (RS) on voltage quality in MV networks and summarizes problems considered of general interest relating to the power quality of dispersed generation. We are interested in voltage fluctuations, flicker, harmonic distortion, interharmonic distortion, and the effect of dispersed generation on ripple control signals. The influence of DG on voltage stabilization, line losses, and short circuit impedance are also investigated. A basic analysis of the possibility and effectiveness of using a parallel Active Filter (AF) to compensate for the constant-speed wind turbine (WT) flicker, reactive power, and terminal voltage variation is presented too.
Simple Control Schme of Three-Level PWM Converter Connecting Wind Turbine with Grid.
Authors: Mariusz Malinowski  , Steffen Bernet  , Steffen Bernet
Published: July 2017

This paper proposes a simple direct power control using space vector modulation (DPC-SVM) for three-phase three level neutral point clamped (3L-NPC) PWM converter connecting a wind turbine generator with grid. The active and reactive power are used as the control variables instead of the currents applied in conventional control method. Moreover, grid voltage sensors are replaced by a virtual flux (VF) estimator. The theoretical principle of this method as well as the synthesis of the active and reactive power controllers are discussed. It is shown that the proposed method exhibits several features as: simple and robust algorithm as well as simple tuning procedure of PI power controllers. Furthermore the paper presents a LCL-filter design, which fulfils IEEE-SCR 20-50 recommendation. Simulation results have proven an excellent performance and verified the validity of the proposed system.
Multipolar Generator for Lower-power Windmills.
Authors: A. Chuchalin  , I. Safyannikov  , I. Rossamakhin
Published: July 2017

In this paper a new design of disk type multipolar electric generator with electromagnetic excitation is introduced. Applying the generator mentioned makes it possible to enhance the performance effectiveness of wind-driven power plants. The diagrammatic representation of an active zone presented serves as an example of generator design and operation principle. The basic distinguishing features of design and its position in the electrical machines classification are pointed out.
Analysis strategy based on wavelet decomposition for classification of voltage sags
Authors: J. Xargayó  , J. Meléndez  , J. Colomer
Published: July 2017

In order to solve the problems by the perturbations in a voltage distribution system, is necessary the detection and identification of the different disturbing incidents: short-circuits, harmonic distortions, notchings, voltage dips (sags), etc. If it is possible, this detections can be effected automatically, without manual intervention, and as fastest as possible.
In this work we study the viability of the utilization of the wavelet transform for detection, identification and characterization of perturbations in a medium and high voltage distribution system. In concrete, the work center the study in the voltage sags , and the possibility to divided the sags in different categories for facility futures studies about possible causes or effects.
The implementation of the algorithm was made with the ‘Wavelets Toolbox’, a toolbox of the MATLAB simulation program.
Output Stabilization of Wind Turbine Generator by Series and Parallel Compensation Using SMES.
Authors: T. Senjyu  , T. Kinjyo  , K. Uezato  , H. Fujita  , Toshihisa Funabashi
Published: July 2017

In recent year, the generating power from renewableenergy sources is coming up. Particularly, wind energy conversionsystems is at tractive becau se of it's advant ages such as , pollutionfree, no fuel cost, ab undantly available in natu re etc,However, thegenerated power and the bus voltage is always fuctuating and itmainly depends on the wind speed，A su perconducting m agneticenergy storage(SMES] unit is capable of controlling both the ac-tive and reactive po wer simultaneously and quickly. In this paper.contro! scheme for active and reactive output power simultan eouscontrol and voltage cont rol of t he series an d parallel com pensat orusing SMES is proposed. It is show through sim ulations, that thecontrolling sequence of charging and disch argin g of the SMES coileffectively damps out the transm ission line power oscillation an dwTG's termin al bus yoltage fuctuations.
A Novel Frequency and Positive Sequence Detector for Utility Applications and Power Quality Analysis.
Authors: F. P. Marafão  , S. M. Deckmann  , E. K. Luna
Published: July 2017

Based on multi-dimensional representation and vector calculus definitions, this paper proposes two novel and quite simple algorithms for utility applications and power quality analysis. The first one is a synchronizing procedure, based on a digital PLL (Phase Locked Loop). Its design and dynamic behavior are analyzed for single and three-phase systems. The second one is a positive sequence detector, which uses the proposed PLL to ensure that the positive sequence components can be calculated even under distorted waveform conditions or frequency variations. Since it is not based on Fortescue’s classical decomposition and no special input filtering are needed, its dynamic response may be as fast as one fundamental cycle. In order to validate the proposed models, simulations are shown and experimental results were obtained by means of a DSP-based system and a prototype of Power Quality Monitor. Furthermore, the PLL algorithm was implemented in a selective active filter to confirm the expectations in a closed-loop application.
Learning power Conditioning Basics at the Technical Engineering School of Barcelona (EUETIB/UPC).
Authors: Jordi de la Hoz  , Sergi Fillet  , Alfredo de Blas
Published: July 2017

Power quality, as a new important target on power system design, is becoming fundamental on engineers curricula. In order to introduce basic concepts, it has been decided to create an introductory course opened to all the technical engineering students.
The main objectives of the course “Power systems conditioning applications” are to allow engineering students to learn fundamentals and essentials on power quality and systems conditioning.
Cause the diverse student’s formation, a novel methodology, Project Based Learning based, is being developed.
Alternatives to the Frequency Control of an Islander Wind Farm.
Authors: I. Zubia  , X. Ostolaza  , L.M. Bandrés
Published: July 2017

The technical problems caused by the connection of wind farms to the electrical grid have encouraged different works in order to analyse their impact in normal situation as well as under disturbances. The most common electrical disturbances are symmetric and asymmetric short circuits that could damage both the wind farm and the network. In this case different relays in order to protect the wind farm are being developed. Islanding operation of wind farms is a particular case of abnormal situations. Nowadays, wind farms are forced to stop as soon as their disconnection is detected, but several proposals are being developed in order to maintain their operability.
This paper reports the study carried out to compare two different approaches of a frequency control for islanded wind farms. The equipment necessary to implementing each approach in a real wind farm as well as respective results are described. The strategy has been verified in a simulator implemented as a C-MEX S-Function for MATLAB, and has been applied to the wind farm of El Perdon.
Power Quality and Digital Protection Relays.
Authors: I. Zamora  , A. J. Mazón  , V. Valverde  , E. Torres  , A. Dyśko
Published: July 2017

Power Utilities need to satisfy the demands of supplying high quality of power to their consumers efficiently and effectively, while maintaining investments and generating profit. The use of digital multifunction relays and their proper integration into power system is an important element of this process. However, the performance of digital relays depends on many factors and needs to be carefully evaluated. In the first part of the paper the main advantages and limitations related to digital relays are outlined. The key standards related to power quality are introduced and their relevance to protective relaying is indicated. Finally, the influence of power quality on protection relays is assessed through several simulation examples using the software tool Mathcad.
Automatic Management of Voltage Sags Recorded in a 25 kV Sbstation
Authors: J. Meléndez  , D. Macaya  , D. Llanos  , J. Cobos  , J. Sánchez  , M. Castro
Published: July 2017

This paper describes an application specially designed to manage and analyse information related to voltage sags registered in a 25kV substation. The purpose of the application is to assist substation managers in the identification and location of faults in the network. The application is conceived to integrate and to exploit complementary information registered during faulty operation.
Experimental Validation and Comparisons of Active Filtering Strategies.
Authors: Fernando Pinhabel Marafão  , Sigmar Maurer Deckmann
Published: July 2017

This paper deals with different active filtering strategies and digital techniques that can be applied to their implementation. The central idea is based on an alternative method to evaluate the disturbing voltage and current components through selective decompositions. Those decompositions, applied directly on voltage and current signals, are used to identify the distorting, unbalancing and non-active components and can be used to compensate either non-active power, power oscillations, harmonics and asymmetries in a different way as provided by the well known pq Theory. Four compensation strategies are discussed and compared for solving typical power quality problems. Simulation and experimental results illustrate the main differences among them, when facing non-linear, unsymmetrical and variable loads under generic voltage conditions. According to these results, a shunt active filtering is even capable to improve the PCC voltages under critical conditions or can allow full compensation of a set of chosen harmonics, even if the active filter has limited bandwidth.
A New Methodology For On-Line Power Quality Asseessment.
Authors: A. Moussa  , M. El-Gammal1  , E. N. Abdallah  , A. Abouelseoud
Published: July 2017

The development of new methods for real time detection and evaluation of voltage events in the distribution systems is of great importance in order to prevent the impact of these disturbances on customer equipment and to evaluate the economics of power quality improvement alternatives. The main objective of this work is to introduce a new methodology of advanced power quality assessment. The introduced system is implemented using powerful software algorithms to construct a system for real time detection and identification of different types of power quality disturbances. A number of disturbance events have been simulated for further processing and analysis The introduced system detects accurately any power quality disturbance event and introduces new indicative factors estimating the performance of any supply system subjected to different categories of disturbance events. Moreover, a new mitigation technique through constructing feedback correction signals for disturbance compensation is suggested. For complete automatic on-line monitoring, detection and identification system, a hardware device for disturbance simulation, and a data acquisition card for real time monitoring system were under construction.
Influence of Unbalanced and Waveform Voltage on the PerformanceCharacteristics of Three-phase Induction Motors
Authors: Enrique Quispe  , Gabriel Gonzalez  , Gabriel GonzalezJair Aguado
Published: July 2017

This paper examines the proper application ofthree-phase induction motors when supplied by unbalanced andharmonics voltage. The proposed is show that a poor powerquality voltage have bad effects over the motor performance:loss, temperature rise, rated horsepower, efficiency , magneticnoise and reliability. Finally this paper presentrecommendations in order to increase the reliability ofinductions motors operations.
Control of a Active Filter Using Dynamic Neural Networks
Authors: J.L. Flores Garrido  , P. Salmerón Revuelta
Published: July 2017

At this paper the “dynamic multilayer perceptron” (MLP) neural network has been applied to the control of an active power filter (APF). The objective is developing a new suitable control technique by APF’s for compensation of harmonic distortion present in nonlinear loads current by electric power circuits. The strategy has been extracting the instantaneous value of the fundamental harmonic from the load current by means of this artificial neural network (ANN) topology. A previous training with waveforms distorted by harmonics up to the 29th order showed to be enough for a high accuracy, working with typical nonlinear loads. By using this fundamental harmonic, the shunt APF reference distortion signal is obtained. This has been applied, at simulation, to a practical case of a power circuit containing an AC regulator and a series RL load. The results show the ability of this type of ANN to supply the APF with the reference signal necessary for its control.
Performance Analysis of Direct Power Controlled PWM Rectifier under Disturbed AC Line Voltage.
Authors: H.Azizi  , A.Vahedi
Published: July 2017

Voltage and current source inverter are widely used in electrical motor drives. In this drives, DC voltage (or current) are usually provided from phase control or line commutation rectifiers. Because of disadvantage & limitation of this converter, some new topologies are presented in advanced drive such as PWM rectifier. Thanks to well known capabilities of PWM rectifier, classical converter’s problem can be overcome. There are several PWM rectifier control strategies. In this paper these control methods are introduced. At first, performance of the Direct Power Control (DPC) PWM rectifier is studied under balanced voltage condition. As line voltage disturbance are often considerable in industrial applications, rectifier performance under disturbed line voltage is investigated. For this purpose a DPC method is implemented in MATLAB/SIMULINK environment. Based on simulation results, DPC-PWM rectifier performances under unbalance and voltage sag is discussed.
Distortion and Unbalance Assessing Indices Using Commercial Analysers
Authors: P. Salmerón  , Reyes S. Herrera  , A. Pérez  , J. Prieto
Published: July 2017

Power quality monitoring is assuming an increasing importance because of the large diffusion of nonlinear and time-varying single-phase and three-phase loads and their interactions with the power supply system. This has made that the industrial electrical consumer systematically uses measure equipment to evaluate the electric power quality. The measurements show that the harmonics of the waveforms are variable along with the time due to the changes in the load conditions and in the system configuration. Thus, the electrical users dispose of a great quantity of data from such of the three phases of the supply. Therefore, it is necessary to find a way to characterize this great group of registered data. Thus, the objectives of this work are: firstly, to propose two indices, a three-phase total demand distortion index and a three-phase total unbalance index; secondly, this paper proposes a simple way to characterize the groups of data in an statistical way which make easy its representation. The study carried out is applied to the data recently registered in an electrical power system.
Compensation of Voltage Unbalance and Current Harmonics with a Series Active Power Filter.
Authors: Salvador P. Litrán  , Patricio Salmerón Revuelta  , Jesús R. Vázquez  , Juan L. Flores
Published: July 2017

A combined system of shunt passive and series active filter for a four-wire three-phase system has been designed and simulated with Matlab/Simulink. The system combined mitigates the source current harmonics and compensates also unbalance voltages reducing the problems of using only a shunt passive filter. Therefore, a new control method based in the power vectorial theory has been proposed. The compensation principle is presented in detail. To verify the effectiveness of the proposed control, simulation results are presented and discussed.
Phisical Model of Disk Type Multipolar Switchboard Generator.
Authors: A. Chuchalin  , I. Safyannikov  , I. Rossamakhin
Published: July 2017

In the paper the physical model description of disk type multipolar switchboard generator is introduced. Basic principles as to design features in the active zone and rotor disks mutual angular orientation have been determined as demonstrated with the generator model presented.
Comparison Between Fuzy Logic and PI Controls in a Speed Scalar Control of an Induction Machine.
Authors: J. Martínez García  , J.A. Domínguez
Published: July 2017

This article compares the response of a induction machine with scalar speed PI controls and with Fuzzy logic controls. The simulation has been developed using Simulink and Matlab [1]. The operation of the motor has been verified with different speed targets in form of steps.
This work allows to be seen the improvement that can be achieved by the induction machine changing controls PI into Fuzzy.
The Application of Short-Term Deterministic Wave Prediction to Offshore Electricity Generation.
Authors: J.R.Halliday  , D.G. Dorrell  , A.R. Wood
Published: July 2017

The field of wave energy extraction from the oceans is moving from the realm of drawing board dreams to the reality of device farms in the open ocean. Several devices are now at the stage of full scale testing and methods of increasing their economic potential are required. Maximum energy capture from a given sea state is one such way of increasing production and for devices to achieve this an accurate prediction of the sea surface elevation in the vicinity of these devices is required. The method proposed is based on the work of Belmont [1] and Zhang [2], extending from unidirectional modelling to directional. Preliminary simulations for a unidirectional buoy excited by a Pierson-Moskowitz spectrum are given and the proposed method for directional modelling is then set forth.
Influence of External Currents in Sensors Based on PCB Rogowski Coils.
Authors: Artero J.A  , Arcega F.J.
Published: July 2017

A  current  sensor  based  in  the  Rogowski  coil  is  an  innovative measuring system that gives advantages with respect to    conventional    measuring    systems    based    in    current    transformers  with  magnetic  core  [1], [2].and [3].   Their  main  advantages are: the linearity, the span and the bandwidth. Different  kinds  of  manufacturing  allow  to  obtain  an  important  variety of Rogowski coils with different properties. One way of manufacturing  is  using  the  same  method  as  for  producing  printed  circuit  boards,  so  by  this  way  is  possible  to  produce  coils very similar and with a high precision. The   authors   are   working   in   current   measurement   with   Rogowski  coils  or  Hall  effect  sensors  and  in  particular  in  the  realization of good and accurate coils [4] and [5].In this work, the  influence  of  external  currents  to  the  coil  in  the  measured  current by the coil has been evaluated.
Investigation on Brushless DC Appropriateness to Direct-Drive Generator Wind Turbine.
Authors: D. Vizireanu  , S. Brisset  , P. Brochet  , Y. Milet  , D. Laloy
Published: July 2017

The paper studies the posibility to increase the power capability of direct-drive application. The system consists in a trapezoidal waveform PM brushless generator connected to the grid via a back-to-back concerter. Numerical model of the the system from the shaft of the generator until the DC bus circuit is setup. The studied parameters of the system are the electromagnetic torque ripple and the quality of the energy supplied to the grid. DC bus voltage adaption is proposed to avoid torque oscilltions and polyphased systems are proposed to reduce the low frequency harmonics of the power transferred to the grid.
Power Curve Characterization II. Modelling Using Polynomial Regression.
Authors: A. Llombart  , S. J. Watson  , J.M. Fandos  , D. Llombart
Published: July 2017

Accurate determination of wind turbine performance is necessary for economic operation of a wind farm. We propose modifications to the basic polynomial method to take account of distance between the meteorological mast and the wind turbine and also the complexity of the terrain. The methods are evaluated using data from operational wind farms and the methods are compared to a modified IEC 61400-12 bin method.
Hybrid Power Quality Harmonic Indices.
Authors: Ricardo A. Lima  , Claudio A. Reineri  , Fernando H. Magnago
Published: July 2017

In this paper the most frequently used power quality indices are reviewed, and an hybrid algorithm for power quality index determination is proposed. The algorithm is based on the wavelet transform and is not limited to stationary waveforms. The wavelet transform is used to detect, classify the signals and to calculate the Total Harmonic Distortion (THD). In cases where the wavelet transform is not applicable, its detection capability allows to identify the signals and the choice of another index is done to calculate the harmonic distortion. Advantages of the new index are highlighted and its performance is compared with the traditional set of indices.
Assessment of wind-Power Quality: Implementation of IEC61400-21 Procedures.
Authors: A. Morales  , X. Robe  , J.C. Maun
Published: July 2017

The purpose of this paper is to present the implementation of power quality procedures meeting the IEC 61400-21 standard. The system’s architecture is detailed in the paper. An experimental laboratory setup which represents a fixed speed generation system is described. Measurements are carried out to test the proposed algorithm according to the measurement procedure for continuous operation of wind turbines. The assessment procedure is applied to investigate flicker emission.
Táticas de reconquista do espaço
Authors: Sansão Adriana , Couri Aline , Lapos Barbara , Till Joy , Luzardo Priscila
Published: July 2017

O objetivo deste artigo é apresentar uma ação tática de reconquista de um espaço esquecido da cidade do Rio de Janeiro através de uma intervenção realizada por estudantes de Arquitetura, Artes e Design no âmbito da I Oficina de Intervenção Temporária. Questionando sobre o papel do cidadão nas transformações da cidade, a Oficina apresentou as intervenções temporárias e o urbanismo tático como ações bottom-up capazes de transformar gradualmente os espaços públicos. O sítio de atuação foi a Travessa do Liceu, espaço público relegado no recente processo de transformação da frente marítima carioca, localizado na linha divisória entre o Morro da Conceição e a Praça Mauá. A partir das discussões e da imersão na área-objeto de estudo, a intervenção #becomaravilha, construída coletivamente pelos estudantes, ativou esse espaço vazio de uso e de significado, permitindo-o conectar o tecido histórico do morro aos grandes equipamentos da Praça Mauá revitalizada.

Palavras-chave: Urbanismo tático; construção coletiva; Porto Maravilha; Rio de Janeiro.
Új kihívások a középszintű államigazgatásban 2016-tól napjainkig A területi kormányhivatalok és járások továbbfejlesztésének főbb lépései és iránya
Authors: Barta Attila , Jakab Viktória
Published: July 2017

This paper deals with the alteration of sub-national representation of government. Nowadays in Hungary the aforementioned institutions are called county (capital) government offices. The overview gives rise to the following research questions:

Who are these representatives and what is the role of territorial government offices?

Why interesting the Hungarian administrative improvement?

What the future holds?

The study concludes that the Hungarian Government has a comprehensive plan on the development of public administration until 2020, and the government offices and their districts play a pivotal role in this plan.
HASIL TANGKAPAN IKAN MADIDIHANG DARI ASPEK TEKNIS DAN BIOLOGI MENGGUNAKAN ARMADA PANCING TONDA DI PERAIRAN PALABUHANRATU
Authors: Ihsan Muhammad , Yusfiandayani Roza , Baskoro Mulyono S. , Mawardi Wazir
Published: July 2017

Pembangunan perikanan di daerah terdiri dari berbagai aspek, salah satunya adalah aspek teknis dan aspek biologis. Aspek biologis memiliki peranan penting untuk pengembangan perikanan di suatu daerah. Aspek teknis digunakan untuk melihat bagaimana cara madidihang tertangkap dan aspek biologis digunakan dalam penelitian ini berguna untuk mengetahui perkembangan penangkapan pada objek ikan yang tertangkap dalam hal ini adalah madidihang yang mendarat di PPN Palabuhanratu. Sampel madidihang diambil pada Agustus 2015 sampai Desember 2015 dari seorang nelayan di PPN Palabuhanratu. Dalam pengoperasian armada pancing tonda, digunakan 4 alat jenis alat tangkap yaitu taber, tomba, pancing ulur, dan layang-layang yang mempunyai fungsi dan jenis hasil tangkapan yang berbeda. Pengukuran total panjang total berat dan analisis korelasi panjang-berat. Data yang telah dihitung antara korelasi dari jumlah panjang dan jumlah-berat madidihang yang issometric dengan b nilai 3.304. Panjang tuna madidihang yang didaratkan secara keseluruhan berkisar antara 39–68cm FL. Distribusi frekuensi panjang tuna madidihang selama lima bulan didominasi oleh ukuran < 100 cm FL. Berdasarkan pengamatan armada pancing tonda, tiap alat tangkap yang digunakan mempunyai cara yang berbeda-beda dalam operasi penangkapannya dengan hasil tangkapan yang berbeda. Berdasarkan analisis korelasi panjang-berat, madidihang memiliki hasil isometrik yang dapat disimpulkan bahwa pertumbuhan madidihang berkembang dengan baik. Hasil tangkapan bedasarkan analisis selang kelas panjang madidihang menunjukan 55% hasil tangkapan berada pada ukuran jouvenile.
ANALISIS STRUKTUR KOMUNITAS MAKROALGA EKONOMIS PENTING DI PERAIRAN INTERTIDAL MANOKWARI, PAPUA BARAT
Authors: Ayhuan Hendrik Victor , Zamani Neviaty Putri , Soedharma Dedi
Published: July 2017

Makroalga di daerah Manokwari memiliki keanekaragaman spesis yang tinggi, namun organisme ini sangat rentan terhadap perubahan kondisi lingkungan baik alami maupun tekanan antropogenik. Tujuan penelitian ini adalah mengkaji komposisi spesies makroalga (klasifikasi dan identifikasi) dan menganalisis struktur komunitas makroalga di perairan intertidal Manokwari Papua Barat. Penelitian pengambilan data di lapangan pada bulan Juni 2014 sampai September 2014 (periode musim timur) pada 2 daerah penelitian yaitu mainland dan outland. Komposisi spesies makroalga ditemukan 28 spesies yang diklasifikasikan ke dalam 3 divisi, 3 kelas, 11 ordo, 16 famili, dan 19 genus. Spesies alga yang di temukan tersebut dikelompokkan dalam 3 divisi utama yaitu alga hijau (Chlorophyta) 14 spesies, alga merah (Rhodophyta) 8 spesies dan alga coklat (Phaeophyta) 6 spesies. Total rata-rata kepadatan jenis makroalga daerah outland lebih tinggi dibandingkan dengan mainland. Analisis struktur komunitas makroalga daerah outland lokasi Mansinam dan Lemon memiliki indeks keanekaragaman lebih tinggi di bandingkan dengan daerah mainland lokasi Rendani, Pasir Putih dan Arfai. Indeks keseragaman pada 5 lokasi penelitian daerah mainland dan outland mendekati 1 dimana populasi individu makroalga tiap jenis menyebar merata dan tidak ada makroalga yang dominan, sedangkan indeks dominansi mendekati nol dimana komunitas makroalga penyusunnya berada dalam keadaan stabil.
PEMETAAN PERUBAHAN EKOSISTEM WILAYAH PESISIR KECAMATAN DULLAH UTARA KOTA TUAL
Authors: Thenu Imanuel M. , Makailipessy Marvin M.
Published: July 2017

Tingginya aktivitas pemanfaatan serta kurangnya informasi dan data tentang ekosistem sebagai acuan dasar pengelolaan di wilayah pesisir Kecamatan Dullah Utara. Penelitian ini bertujuan mengetahui potensi dan sebaran ekosistem terumbu karang dan lamun serta menganalisis laju perubahannya dalam periode waktu tertentu berdasarkan hasil interpretasi citra. Berdasarkan hasil analisis citra akan diketahui luasan dan sebaran ekosistem, kemudian dibandingkan dengan beberapa citra pada periode waktu lampau untuk menganalisis laju perubahannya. Penelitian ini dilakukan di wilayah pesisir Kecamatan Dullah Laut Kota Tual. Metode analisis citra yang digunakan adalah teknik transformasi depth invariant indeks dan klasifikasi terbimbing. Hasil interpretasi citra Landsat 8 tahun 2014 menunjukkan luasan terumbu karang sebesar 1.934,82 ha sedangkan luasan lamun sebesar 614.43 ha. Pada tahun 2004 ke 2009 terjadi peningkatan luas ekosistem terumbu karang sebesar 133.56 Ha (4.78%), sedangkan ekosistem lamun terjadi peningkatan luas sebesar 84.69 ha (14.58%). Pada tahun 2009 ke 2014 ekosistem terumbu karang mengalami penurunan luas sebesar 992.16 ha (33.89%) sedangkan untuk ekosistem lamun mengalami penurunan luas sebesar 51.21 ha (7.69%).
MODEL KONSEPTUAL PENGEMBANGAN PELABUHAN PERIKANAN SAMUDERA BUNGUS SEBAGAI PUSAT PENDARATAN IKAN TUNA
Authors: Ikhsan Suci Asrina , Sholihin Iin , Nurani Tri Wiji
Published: July 2017

Model konseptual pengembangan pelabuhan perikanan samudera Bungus sebagai pusat pendaratan ikan tuna adalah sebuah sistem yang melibatkan berbagai aktor dalam pembangunan. Tujuan penelitian yang dilakukan adalah evaluasi kinerja pelabuhan perikanan samudera Bungus dan menciptakan model konseptual sebagai pusat pendaratan ikan tuna. Pengembangan pelabuhan perikanan samudera Bungus dengan soft system methodology (SSM), yang melihat masalah secara keseluruhan di pelabuhan perikanan. Hasil penelitian ini adalah empat model konseptual untuk memperbaiki masalah yang terjadi di masa sekarang. Model konseptual dibangun oleh tiga aspek, aspek tentang sumber daya manusia dan aspek kelembagaan, aspek pelayanan, dan aspek fasilitas. Implementasi model konseptual yang dapat dilakukan dengan berbagai strategi, yang melibatkan seluruh pelaku seperti pemerintah, nelayan dan industri pengolahan.
ANALISIS DAERAH PENANGKAPAN IKAN MADIDIHANG (Thunnus albacares) BERDASARKAN SUHU PERMUKAAN LAUT DAN SEBARAN KLOROFIL-A DI PERAIRAN PROVINSI ACEH
Authors: Bahri Samsul , Simbolon Domu , Mustaruddin Mustaruddin
Published: July 2017

Ikan tuna madidihang (Thunnus albacares) merupakan sumberdaya ikan unggulan yang tersebar di wilayah perairan Provinsi Aceh. Sejauh ini, para nelayan ikan tuna madidihang mengalami kendala dalam menentukan titik operasional daerah penangkapan ikan. Penentuan daerah penangkapan ikan dapat diduga dari kondisi perairan yang merupakan habitat dari suatu spesies dan biasanya digambarkan dengan parameter oseanografi. Suhu permukaan laut (SPL) dan klorofil-a merupakan parameter oseanografi yang penting untuk mengetahui keberadaan ikan tuna madidihang dan mempermudah dalam menganalisis daerah penangkapan ikan yang potensial. Oleh karena itu, penelitian ini bertujuan  mengkaji dan menganalisis daerah penangkapan ikan tuna madidihang berdasarkan parameter SPL dan sebaran klorofil-a, di perairan Provinsi Aceh. Metode yang digunakan dalam penelitian ini antara lain pengambilan data hasil tangkapan ikan tuna madidihang di lapangan secara purposive sampling di perairan Provinsi Aceh, serta analisis SPL dan klorofil-a menggunakan data citra satelit Aqua Modis yang diolah dengan software ArCGIS. Hasil penelitian menunjukkan sebaran SPL di perairan Provinsi Aceh berkisar antara 26.19- 32.8 °C. Nilai kisaran SPL tertinggi mencapai 32.87 °C terjadi pada bulan Maret, serta SPL terendah 26.19 °C terjadi pada bulan April. Analisis sebaran klorofil-a di perairan Provinsi Aceh berkisar antara 0.02- 3.47 mg/m3. Nilai klorofil-a tertinggi 3.47 mg/m3 terjadi pada bulan Mei, sedangkan nilai klorofil-a terendah 0.02 mg/m3 terjadi pada bulan Mei. Produktivitas hasil tangkapan ikan tuna madidihang tertinggi (435 kg) dicapai pada nilai SPL 28 °C dan klorofil 0.44 mg/m3. Berdasarkan analisis regresi linier berganda, sebaran SPL dan klorofil-a tidak berpengaruh nyata terhadap hasil tangkapan ikan tuna madidihang di perairan Provinsi Aceh.