bluuebunny/crossref_metadata_2025 huggingface dataset:
Bridgeless Boost Pfc Converter Using The Three-state Switching Cell
Authors: Seixas Falcondes José Mendes de , Balestero Juan Paulo Robles , Seixas Claudiner Mendes de , Tofoli Fernando Lessa , Bascopé Grover Victor Torrico
Published: September 2018

This paper introduces a bridgeless boost converter based on the three-state switching cell for PFC (power factor correction) applications, whose distinct advantages are reduced conduction losses with the use of magnetic elements with minimized size, weight, and volume. The approach also employs the principle of interleaved converters, as it can be extended to a generic number of legs per winding of the autotransformers and high power levels. The theoretical analysis of the proposed converter is developed, while a comparison with the conventional boost converter is also performed. An experimental prototype rated at 1 kW is implemented to validate the proposal, as relevant issues regarding the novel converter are discussed.
Um Controlador Aplicado ao Transformador de Frequência Variável - VFT
Authors: Aquino Antonio F. C. , Vinhaes Arjan C. , Watanabe Edson H. , Aredes Maurício
Published: September 2018

Este artigo apresenta uma proposta de controlador para o Transformador de Frequência Variável, ou VFT (Variable Frequency Transformer), aplicado na interligação de sistemas elétricos de mesma frequência nominal, mas sem a necessidade de estarem conectados de forma síncrona por meio de uma interligação CA. Foram desenvolvidos modelos lineares do VFT e dos sistemas de potência, através dos quais o controlador proposto para o VFT foi ajustado. A adequação das proposições foi comprovada através de simulações digitais utilizando modelo detalhado do VFT e da rede elétrica.
Configuration 5S: a bi-directional AC-DC converter
Authors: Cipriano dos Santos Júnior Euzeli
Published: September 2018

This paper proposes a bi-directional ac-dc converter to be applied in Energy-Control-Center (ECC) in order to interface dc variables, such as battery energy storage system and ac conventional utility grid. Such power electronic solution guarantees: (i) bi-directional power flow between dc and ac converter sides, (ii) independent control in both sides, (iii) high level of integration, and (iv) implementation of two functions using a unique power conversion stage. Despite proposing a new solution, this paper presents an analysis of the converter in terms of: PWM strategy, dc-link capacitor variables, switches variables, low-pass-filter specification employed at the output converter sides and a comparison with a conventional solution. Simulation and experimental results are presented as well.
Proposta de Conversor Ca-Cc Trifásico de Múltiplos Pulsos com Estágio Elevador de Tensão Controlado em Corrente por Histerese Constante
Authors: Fernandes Rodolfo Castanho , Seixas Falcondes José Mendes de
Published: September 2018

O conversor detalhado neste trabalho é do tipo retificador de 18 pulsos com estágio de entrada baseado em autotransformador associado a estágios CC-CC elevadores de tensão com controle pela técnica de histerese constante, na qual a banda (ou largura) de histerese é mantida fixa. Trata-se de uma proposta de conversor relativamente compacto, com módulos CC-CC independentes, de potência específica da ordem de 300 W/kg e com controle completamente analógico e de baixo custo. A independência de operação entre os módulos elevadores de tensão, garantida por modificações nos circuitos destes estágios CC-CC, simplifica a estratégia de controle, permite sua associação em paralelo e favorece o balanceamento natural de potências processadas nos estágios, ou seja, a divisão igualitária da potência total entre cada módulo associado. Os autores propõem a utilização do novo conversor em substituição a estágios retificadores de baixa qualidade de energia, acionamentos elétricos e demais casos em que se necessite de um barramento CC regulado e robusto. Os resultados experimentais indicam fator de potência de 99% e distorções harmônicas das correntes de entrada de 6% para um protótipo de 6 kW alimentado em 220 V/ 60 Hz e com saída CC de 400 V.
Estratégia de Modulação para Conversores Multiníveis em Cascata Simétricos Sob Condições de Faltas
Authors: Carnielutti Fernanda de M. , Pinheiro Humberto , Rech Cassiano
Published: September 2018

Este artigo propõe uma nova estratégia de modulação para conversores multiníveis em cascata simétricos, adequada para a operação com ou sem faltas nas células de potência que constituem o conversor. Inicialmente, é derivado o conjunto de todas as possíveis tensões de modo comum para que o conversor opere na região linear, considerando o estado de cada uma de suas células. É demonstrado que, através da seleção adequada da tensão de modo comum, toda a capacidade de síntese de tensão do conversor pode ser utilizada. A adição desta tensão de modo comum às fases do conversor compensa a perda de uma ou mais células, evitando as distorções resultantes e sintetizando tensões de linha de saída equilibradas. A estratégia proposta foi aplicada a um conversor multinível em cascata simétrico com duas células por fase, sendo apresentados resultados experimentais e de simulação que comprovam a eficácia do método proposto, validando as análises teóricas.
Análise e Implementação de Filtro Ativo Híbrido de Potência
Authors: Silva Newton da , Pomilio José A. , Vendrusculo Edson A.
Published: September 2018

Este trabalho analisa a compensação de correntes harmônicas através de um filtro ativo híbrido. No presente estudo, o filtro híbrido consiste de um filtro ativo conectado em paralelo com o indutor de um filtro passivo sintonizado. O objetivo deste arranjo é operar com menores tensão e corrente a serem processadas pelo filtro ativo. O artigo investiga o comportamento do filtro híbrido na compensação de correntes harmônicas, a partir de uma estratégia de controle usada no filtro ativo e discute o dimensionamento do inversor. Resultados de simulação e experimentais verificam a operação do sistema.
Proposta de um Chaveamento PWM Otimizado para um Conversor Multinível em Cascata Assimétrico
Authors: Encarnação Lucas Frizera , Aredes Mauricio
Published: September 2018

Este artigo apresenta uma proposta de modulação híbrida, combinando a modulação em degrau convencional com a modulação PWM (Pulse Width Modulation) descontínua, aplicada aos conversores multiníveis em cascata assimétricos. O desempenho da modulação híbrida proposta neste trabalho será comparada com duas estratégias híbridas convencionais por meio de resultados de simulação e experimentais. O conversor multinível implementado é composto por três inversores monofásicos, em ponte completa, por fase. Por fim, um compensador síncrono estático aplicado a redes de distribuição de média tensão (DSTATCOM) é implementado no intuito de validar experimentalmente a estratégia de modulação proposta.
Retificador Híbrido de Alta Potência com Reduzida DHTI Utilizando Conversor Boost para Promover Alta Suportabilidade a Afundamentos de Tensão
Authors: Costa Admarço V. , Rodrigues Danillo B. , Lima Gustavo B. , Freitas Luiz C. de , Coelho Ernane A. A. , Farias Valdeir J. , Freitas Luiz C. G.
Published: September 2018

Os afundamentos temporários de tensão são as principais causas de paradas intempestivas em sistemas automatizados que utilizam dispositivos de acionamentos de velocidade variável (AVVs) acarretando significativos prejuízos. Neste contexto, o presente trabalho apresenta uma análise de um novo retificador híbrido trifásico capaz de obter alto fator de potência de entrada e, ao mesmo tempo, promover aos AVVs alta suportabilidade aos afundamentos de tensão. A fim de comprovar a eficácia da solução proposta, são apresentados resultados experimentais obtidos para três diferentes casos de afundamento de tensão, em particular os dos tipos A, B e E, avaliando o desempenho do conversor proposto quando da ocorrência destes distúrbios. Em todos os casos analisados, verificou-se que a solução proposta é eficaz e bastante atrativa para aplicações de elevada potência.
Series-shunt Distributed Compensation for Harmonic Mitigation and Dynamic Power Factor Correction
Authors: França Gleisson J. , Filho Braz J. Cardoso
Published: September 2018

This work present the development of an electronically controlled harmonic mitigation device with the property that it can inserts specific series harmonic impedances in the electric system. These harmonic impedances are inserted only at specific frequency (or frequencies) and can be utilized, for example, to active detune power factor capacitor banks limiting the harmonic current through the capacitors without need for capacitor voltage rating increase as it does not significantly change the fundamental voltage at the capacitors. Also the system can be used for implementation of shunt hybrid harmonic filters and in distributed harmonic mitigation strategies, obtaining a flexible and cost-effective solution even for high power applications. Other advantage of the proposed system is the reduced converter rating necessary for the selective harmonic impedance implementation. The utilization of single turn secondary coaxial transformers, where the secondary side is composed only by the power system cable, for harmonic impedance coupling, gives a significant flexibility to its application, allowing an easy evaluation of application in existing systems, minimizing the downtime for solution implementation and performance evaluation.
ARABIC TEACHERS’ COMPETENCE: A CASE OF MADRASAH SCHOOLS IN MALUKU
Authors: Saidah Ummu , Bin-Tahir Saidna Zulfiqar , Mufidah Nuril
Published: September 2018

In reality, not a few teachers who have been certified as educators are less competent in teaching the field of study. Many teachers are also able to master the subject matter, but they have difficult to present the material. This research applied a qualitative method using a case study design. It was carried out in the State Madrasah schools of Salahutu District, Central Maluku Regency. This research was conducted from August to 02 November 2017. The subjects of this study were 3 Arabic teachers, two principals and 6 class students totaling 12 informants. Based on the results, it was found that the pedagogic competence of Arabic language teachers was still relatively low due to the several indicators that were not implemented during the learning process. The personality’s competence of Arabic language teachers is relatively good compared to their pedagogical competence. The lacks of training, facilities, and rewards have caused the low educational competence of teachers. Their personal competence is due to strict supervision and their commitment to building the ummah as followers of religion and not because of their profession as teachers. Students are motivated to learn Arabic due to the motivation is given by the teacher, the mu'amalah is good between teachers and students, and there is a continuous and rigorous evaluation.
RANCANG BANGUN APLIKASI UNTUK MEMPREDIKSI STATUS GIZI BALITA
Authors: Sutoyo Muhammad Nurtanzis
Published: September 2018

Nutrition problems can occur in every phase of life, starting from the womb until the elderly. Application of K-Nearest Neighborhood (k-NN) method can help predict the nutritional status of children under five. The k-NN algorithm is a method to classify objects based on learning data closest to the object. Based on the results of research, it can be concluded that the k-NN algorithm can predict the nutritional status of children.

Keywords: Nutrition, kNN

Masalah gizi dapat terjadi disetiap fase kehidupan, dimulai sejak dalam kandungan sampai dengan usia lanjut. Penerapan Metode K-Nearest Neighborhood (k-NN) dapat membantu memprediksi status gizi balita. Algoritma k-NN merupakan sebuah metode untuk melakukan  klasifikasi  terhadap objek berdasarkan data pembelajaran yang jaraknya paling dekat dengan objek tersebut. Berdasarkan hasil penelitian, maka dapat disimpulkan bahwa algoritma k-NN dapat memprediksi status gizi balita.

Kata kunci: Gizi, KNN
MODEL ARSITEKTUR NEURAL NETWORK DENGAN BACKPROPOGATION PADA PREDIKSI TOTAL LABA RUGI KOMPREHENSIF BANK UMUM KONVENSIONAL
Authors: Windarto Agus Perdana , Lubis Muhammad Ridwan , Solikhun Solikhun
Published: September 2018

determine the marketing strategy in increasing the total comprehensive income. This study aims to create the best architectural model using Backpropogation where this model can later be made to make predictions of total comprehensive income. The variable used in this study is the total comprehensive income statement data of PT. Bank Mandiri, Tbk (January - November 2016). Data sourced from the Financial Services Authority (www.ojk.go.id). From a series of trials conducted with 4 architectural models tested, namely 4-25-1; 4-50-1; 4-100-1 and 4-50-75-1, obtained the best architectural model 4-50-1 with Epoch training = 1977, Mean Square Error (MSE) of 0,000997867 with the correctness of testing accuracy reaching 80%.

Keywords: Artificial Neural Network, Back-propagation, Comprehensive Income, Prediction, Economy, Architecture 

Prediksi total laba rugi komprehensif sangatlah penting untuk memprediksi dimana posisi angka total laba rugi komprehensif pada suatu bank.  Informasi tersebut berguna bagi masayarkat dalam menentukan arah investasi masyarakat ke depan, begitu juga bagi pihak bank berguna untuk menentukan kebijakan strategi pemasaran dalam meninggkatkan total laba komprehensif tersebut. Penelitian ini bertujuan untuk membuat model arsitektur terbaik dengan menggunakan Backpropogation dimana model ini nantinya dapat dilakukan untuk membuat prediksi terhadap total laba rugi komprehensif. Variabel yang digunakan pada penelitian ini adalah data total laba rugi komprehensif PT. Bank Mandiri,Tbk (Januari – November 2016). Data bersumber dari Otoritas Jasa Keuangan (www.ojk.go.id). Dari serangkaian uji coba yang dilakukan dengan 4 model arsitektur yang diuji yakni 4-25-1; 4-50-1; 4-100-1 dan 4-50-75-1, diperoleh model arsitektur terbaik 4-50-1 dengan Epoch training = 1977, Mean Square Error (MSE) sebesar 0,000997867 dengan tingkat akurasi pengujian mencapai kebenaran 80%. 

Kata kunci: Jaringan saraf tiruan, Back-propagation, Laba Rugi Komprehensif, Prediksi, Ekonomi, Arsitektur
IMPLEMENTASI ALGORITMA BACKPROPAGATION UNTUK MEMPREDIKSI KELULUSAN MAHASISWA
Authors: Yalidhan Muhammad Dedek
Published: September 2018

Student’s graduation is one kind of the college accreditation elements by BAN-PT. Because of that. Information System is one of the department in STMIK Banjarbaru, there is no application has been implemented to predict imprecisely of student’s graduation time so far, which causes on time graduation percentage tend low every year. Therefore the accurate student’s graduation prediction can help the committe to choose the correct decisions in order to prevent the imprecisely of student’s graduation time. In this research, the backpropagation algorithm of artificial neural network will be implemented into the application with the output result as delayed and on time graduation. This reseach is using 318 data samples which the 70 % of it will be used as the training data and the other 30 % will be used as testing data. From the calculation of confusion matrix table’s the percentage of the prediction accuracy is 98.97 %.

Keywords: student’s graduation, artificial neural network, backpropagation, confusion matrix

Kelulusan mahasiswa merupakan salah satu elemen dalam standar akreditasi perguruan tinggi oleh BAN-PT. Sistem Informasi adalah salah satu program studi yang ada di STMIK Banjarbaru, selama ini belum ada aplikasi yang diimplementasikan untuk memprediksi ketidaktepatan waktu kelulusan mahasiswanya yang menyebabkan angka kelulusan tepat waktu cenderung rendah setiap tahunnya. Oleh sebab itu, prediksi kelulusan mahasiswa yang akurat dapat membantu pihak Program Studi dalam mengambil keputusan-keputusan yang tepat untuk mencegah ketidaktepatan waktu kelulusan mahasiswanya. Pada penelitian ini, artificial neural network algoritma backpropagation diimplementasikan pada aplikasi yang dibuat dengan output lulus terlambat dan lulus tepat waktu. Penelitian ini menggunakan sebanyak 318 sampel data yang mana 70 % data digunakan sebagai data training dan 30 % data digunakan sebagai data testing. Dari hasil perhitungan tabel confusion matrix diperoleh persentase akurasi prediksi sebesar 98.97 %.

Kata kunci: kelulusan mahasiswa, artificial neural network, backpropagation, confusion matrix
THE APPLICATION OF UML IN THE PROTOTYPE OF DESIGN EXPERT SYSTEM FOR THE DIAGNOSIS OF CHILI DISEASES AND PESTS
Authors: Aziz Muliadi , Budiman Irwan , Sofyan Antar
Published: September 2018

Prototype or archetype is the initial form or standard size of an entity. In the design field, a prototype is made before it is developed or precisely made specifically for development before it is made on an actual scale or before mass produced, it will feel very difficult if you do not have a compounding model to design a system. Therefore, to design a prototype expert system for diagnosing diseases and pests of chilli plants using the Unified Modeling Language (UML) method. The purpose of the implementation of this model is to meet all user needs for the software to be built. Manfaat dari model ini dapat membantu perancang perangkat lunak dalam membangun sistem pakar untuk mendiagnosis penyakit dan hama tanaman cabai. The result of this UML implementation is to obtain use case of system processing, diagram activity, entity relationship diagram, and form input output design.

 
MISIR MESELESİNİN ÇÖZÜMÜNDE MUSTAFA REŞİT PAŞA’NIN TANZİMAT FİKRİNİN ANLAŞILMASI - UNDERSTANDING THE TANZIMAT FACILITY OF MUSTAFA REŞİT PASA IN THE SOLUTION OF THE EGYPT ISSUE
Authors: YILDIRIM Zeynep
Published: September 2018

Osmanlı devlet adamları uzun yıllardan beri devleti eski ihtişamına kavuşturmak için çeşitli ıslahat girişimlerinde bulunmuştur. Öncelikle askeri sahada ıslahat yapılmış ve Avrupa’nın bilim ve tekniği askeri araçlara tatbik edilmiştir. Fakat askeri yenilgilerin önüne geçmek yine de mümkün olmamıştır. Ordu, Mısır Valisi Mehmet Ali Paşa’nın isyanını bastırmakta bile başarısız olmuştur. Mısır meselesi Osmanlı Devleti’ni en çok meşgul eden konulardan birisidir. Mustafa Reşit Paşa orta elçi göreviyle gittiği Fransa’da ilk günden itibaren Mısır meselesinin çözümü ve Osmanlı Devleti’nin içinde bulunduğu durumu düzeltebilmek için çareler aramış ve çözüm olarak Tanzimat Fermanı’nın ilan edilmesi gerektiğine inanmıştır. Bu bağlamda Tanzimat’ın şekillenmesinde etkisi olan Mustafa Reşit Paşa’nın Mısır meselesine bakışı ve bu meseleyi çözmek için Tanzimat’a yüklediği anlam incelenerek Tanzimat Fermanı’nın Avrupa’yı taklit etmek ya da memnun etmekten daha fazla anlamının olduğuna ışık tutulmaya çalışılmıştır. Nitel araştırma yöntemlerinden olan doküman analiziyle elde edilen bulguların değerlendirilmesiyle oluşturulan bu çalışmada literatür taranmış ve çeşitli görüşler karşılaştırılmış ve yorumlanmıştır. Bu çalışma ile belirtilmek istenen Mustafa Reşit Paşa’nın Tanzimat’ın ilanındaki asıl beklentisinin, Mısır meselesini çözüme kavuşturmak olduğu ve Tanzimat’ın Avrupa’nın emellerine hizmet eden bir dönem olmadığıdır. Tanzimat’ı Mısır meselesi ile ele alan kaynakların yetersiz olması nedeniyle, bu alandaki boşluğun doldurulması amaçlanmıştır.
Fine-Resolution Mapping of Fine Dust Concentration in Urban Areas and Population Exposure Analysis via Dispersion Modeling
Authors: Son Seungwoo , Kim Dongwoo , Kang Youngeun , Jeon Hyungjin , Kim Seogcheol , Cho Kyunghak , Yu Jaejin
Published: September 2018

It is currently difficult to obtain accurate fine dust information in residential areas due to the insufficient number of air quality monitoring systems and spatial imbalances. Therefore, a detailed particulate matter dispersion model including factors such as land use and meteorological information was developed in this study and used to create fine dust concentration distribution maps. The fine dust concentration distribution maps currently available to citizens were compared with those obtained by dispersion modeling, and population distribution data were employed to compare the populations exposed to fine dust according to the two methods. The results of the existing method and the developed particulate matter dispersion model differed significantly. For instance, the PM2.5 concentrations in Daejeon, South Korea, on February 17, 2018, were 56% “Good” and 44% “Moderate,” according to the existing method, while they were 31% “Good,” 26% “Moderate,” 28% “Unhealthy,” and 15% “Very Unhealthy,” according to the dispersion model. Furthermore, the existing method indicated that no portion of the population was exposed to poor fine dust concentrations, while the proposed model revealed that over 170 thousand people were exposed to such concentrations. These results on fine dust distributions will contribute to sustainable urban and environmental planning.
Vanadium mineralization in the Kola region, Fennoscandian Shield
Authors: Kompanchenko Alena , Voloshin Anatoly , Balagansky Victor
Published: September 2018

In the northern Fennoscandian Shield, a vanadium mineralization occurs in the Paleoproterozoic Pechenga–Imandra-Varzuga (PIV) riftogenic structure. It is localized in sulfide ores hosted by sheared basic and ultrabasic metavolcanics in the Pyrrhotite Ravine and Bragino areas and was formed at the latest stages of the Lapland-Kola orogeny 1.90–1.86 Ga ago. An additional formation of vanadium minerals derived from contact metamorphism and metasomatism produced by the Devonian Khibiny alkaline massif in the Pyrrhotite Ravine area. Vanadium forms its own rare minerals (karelianite, coulsonite, kyzylkumite, goldmanite, mukhinite, etc.), as well as it can be an isomorphic admixture in rutile, ilmenite, crichtonite group, micas, chlorites, etc. Vanadium originated from two sources: (1) basic and ultrabasic volcanics initially enriched in vanadium and (2) metasomatizing fluids that circulated along shear zones. The crystallization of vanadium and vanadium-bearing minerals was accompanied by chromium and scandium mineralization. Vanadium mineralization in Paleoproterozoic formations throughout the world is briefly considered. The simultaneous development of vanadium, chromium and scandium mineralizations is a unique feature of the Kola sulfide ores. In other regions sulfide ores contain only two of these three mineralizations produced by one ore-forming process.
Compatibility of Maximum Inorganic and Organic Calcium and Phosphate Content in Neonatal Parenteral Solutions
Authors: Watrobska-Swietlikowska Dorota
Published: September 2018

The aim of the study was to determine the maximum safe concentration of calcium and phosphate in neonatal parenteral nutrition (PN) solutions when various combinations of inorganic and organic salts are applied. Twelve PN solutions for neonatal use were aseptically prepared. Increasing concentration of inorganic and organic calcium and phosphate were added to the standard formulas. Each admixture was separately tested according to following conditions; after mixing, 37°C for 24 h, and maximum safe combination of calcium and phosphate were stored at 4°C for 30 days and followed by 24 h at 37°C. Visual inspections against a black and white contrast background, microscopic observation of undiluted PN solutions as well as the membrane filter after filtration of the PN solution, pH evaluation, and spectrophotometry at 600 nm were examined in triplicate. Safe maximum concentration of organic and inorganic calcium and phosphate was proposed individually for each composition of parenteral nutrition solutions. Surprisingly organic calcium with organic phosphate showed precipitation but over the therapeutic range. The protective effect of amino acid was observed and higher concentrations of calcium and phosphate were free of precipitation.
Almost Global Stability of Nonlinear Switched Systems with Time-Dependent Switching
Authors: Karabacak Ozkan , Kivilcim Aysegul , Wisniewski Rafael
Published: September 2018

For a dynamical system, it is known that the existence of a Lyapunov density implies almost global stability of an equilibrium. It is then natural to ask whether the existence of a common Lyapunov density for a nonlinear switched system implies almost global stability, in the same way as a common Lyapunov function implies global stability for nonlinear switched systems. In this work, the answer to this question is shown to be affirmative as long as switchings satisfy a dwell-time constraint with an arbitrarily small dwell time. As a straightforward extension of this result, we employ multiple Lyapunov densities in analogy with the role of multiple Lyapunov functions for the global stability of switched systems. This gives rise to a minimum dwell time estimate to ensure almost global stability of nonlinear switched systems, when a common Lyapunov density does not exist. The results obtained for continuous-time switched systems are based on some sufficient conditions for the almost global stability of discrete-time non-autonomous systems. These conditions are obtained using the duality between Frobenius-Perron operator and Koopman operator.
Corn Tassel: A New Source of Phytochemicals and Antioxidants Potential for Value-added Products Development in Agro-industry
Authors: Duangpapeng Prakasit , Ketthaisong Danupol , Lomthaisong Khomsorn , Lertrat Kamol , Scott Marvin Paul , Suriharn Bhalang
Published: September 2018

Corn tassel is a by-product from hybrid corn seed production and a new source of phytochemicals including compounds with antioxidant activity. Four tassel development stages were evaluated in eight commercial corn varieties. Corn varieties and tassel developmental stages showed significant variations (P0.01) for all parameters. Total phenolic content and antioxidant activity were highest in field corn. KGW1, a purple waxy variety, had the highest anthocyanin content and carotenoid content at tassel development stages at 50% and 75% of pollen shed, whereas the tassel developmental stages at the 1st day of pollen shed and 50% of pollen shed had the highest of anthocyanin yield and carotenoid yield. The most suitable time for tassel harvest should be between the 1st day of pollen shed to 50% of pollen shed. Phytochemicals and antioxidants that are extracted from corn tassel can be used as a functional food supplement, natural pharmaceuticals and cosmetic products.
The User’s Perspective on Home Energy Management Systems
Authors: Straub Ad , Volmer Ellard
Published: September 2018

In contrast to physical sustainable measures carried out in homes, such as insulation, the installation of a Home Energy Management System (HEMS) has no direct and immediate energy-saving effect. A HEMS gives insight into resident behaviour regarding energy use. When this is linked to the appropriate feedback, the resident is in a position to change his or her behaviour. This should result in reduced gas and/or electricity consumption. The aim of our study is to contribute towards the effective use of home energy management systems (HEMS) by identifying types of homeowners in relation to the use of HEMS. The research methods used were a literature review and the Q-method. A survey using the Q-method was conducted among 39 owners of single-family homes in various Rotterdam neighbourhoods. In order to find shared views among respondents, a principal component analysis (PCA) was performed. Five different types of homeowner could be distinguished: the optimists, the privacy-conscious, the technicians, the sceptics, and the indifferent. Their opinions vary as regards the added value of a HEMS, what characteristics a HEMS should have, how much confidence they have in the energy-saving effect of such systems, and their views on the privacy and safety of HEMS. The target group classification can be used as input for a way in which local stakeholders, e.g. a municipality, can offer HEMS that is in line with the wishes of the homeowner.
The Amino-Terminal Region of Hepatitis E Virus ORF1 Containing a Methyltransferase (Met) and a Papain-Like Cysteine Protease (PCP) Domain Counteracts Type I Interferon Response
Authors: Bagdassarian Eugénie , Doceul Virginie , Pellerin Marie , Demange Antonin , Meyer Léa , Jouvenet Nolwenn , Pavio Nicole
Published: September 2018

Hepatitis E virus (HEV) is responsible for large waterborne epidemics of hepatitis in endemic countries and is an emerging zoonotic pathogen worldwide. In endemic regions, HEV-1 or HEV-2 genotypes are frequently associated with fulminant hepatitis in pregnant women, while with zoonotic HEV (HEV-3 and HEV-4), chronic cases of hepatitis and severe neurological disorders are reported. Hence, it is important to characterize the interactions between HEV and its host. Here, we investigated the ability of the non-structural polyprotein encoded by the first open reading frame (ORF1) of HEV to modulate the host early antiviral response and in particular the type I interferon (IFN-I) system. We found that the amino-terminal region of HEV-3 ORF1 (MetPCP), containing a putative methyltransferase (Met) and a papain-like cysteine protease (PCP) functional domain, inhibited IFN-stimulated response element (ISRE) promoter activation and the expression of several IFN-stimulated genes (ISGs) in response to IFN-I. We showed that the MetPCP domain interfered with the Janus kinase (JAK)/signal transducer and activator of transcription protein (STAT) signalling pathway by inhibiting STAT1 nuclear translocation and phosphorylation after IFN-I treatment. By contrast, MetPCP had no effect on STAT2 phosphorylation and a limited impact on the activation of the JAK/STAT pathway after IFN-II stimulation. This inhibitory function seemed to be genotype-dependent as MetPCP from HEV-1 had no significant effect on the JAK/STAT pathway. Overall, this study provides evidence that the predicted MetPCP domain of HEV ORF1 antagonises STAT1 activation to modulate the IFN response.
Factors Affecting a Pharmacist Led Postgraduate Education Event: An Island Case Study
Authors: Micallef Ricarda , Kayyali Reem
Published: September 2018

There are no widely established models for postgraduate interprofessional (IPE) events. Due to low number of healthcare professionals (HCPS) on the island of Guernsey, pharmacist continuing professional development (CPD) events incorporate an IPE element making it a unique CPD model. This study evaluates an event that took place in April 2015, to support identification of positive attributes of the event as an IPE case study. From 33 attendees 29 [88%] evaluation forms were returned covering an audience including pharmacists, doctors and nurses. Although the event increased knowledge and understanding of the topic, there was a statistical difference when comparing anticipated change in practice [p<.05], with over half [n=15, 51.7%] saying the learning would not change their practice. No significant differences in responses were seen between different professional groups. Attendees were positive about learning with other HCPs. The focus group comprising 6 professionals identified a key theme of ‘factors affecting attendance at an IPE event’ with four subthemes; IPE and networking, topic, convenience and CPD. All professions were open to and saw the benefit of IPE. Face-to-face events were preferred, facilitated by an expert speaker, with a topic that has relevance to multi-professions. Post qualification IPE events allow a synchronised view of a topic and should be encouraged in the future.
Hemodialysis Impact on Motor Function Beyond Aging and Diabetes – Objectively Assessing Gait and Balance by Wearable Technology
Authors: Zhou He , Al-Ali Fadwa , Rahemi Hadi , Kulkarni Nishat , Hamad Abdullah , Ibrahim Rania , Talal Talal , Najafi Bijan
Published: September 2018

Motor functions are deteriorated by aging. Some conditions may magnify this deterioration. To examine whether hemodialysis (HD) process would negatively impact gait and balance beyond diabetes condition among mid-age adults (48-64 years) and older adults (65+ years). One hundred and ninety-six subjects (age=66.2±9.1 years, body-mass-index=30.1±6.4 kg/m2, female=56%) in 5 groups were recruited: mid-age adults with diabetes undergoing HD (Mid-age HD+, n=38) and without HD (Mid-age HD-, n=40); older adults with diabetes undergoing HD (Older HD+, n=36) and without HD (Older HD-, n=37); and non-diabetic older adults (Older DM-, n=45). Gait parameters (stride velocity, stride length, gait cycle time, and double support) and balance parameters (ankle, hip, and center of mass sways) were quantified using validated wearable platforms. Groups with diabetes had overall poorer gait and balance compared to the non-diabetic group (p<0.050). Among people with diabetes, the HD+ had significantly worsened gait and balance when comparing to the HD- (Cohen’s effect size d=0.63-2.32, p<0.050). Between-group difference was more pronounced among older adults with the largest effect size observed for stride length (d=2.32, p<0.001). Results suggested that deterioration in gait speed among the HD+ was correlated with age (r=-0.440, p<0.001), while this correlation was diminished among the HD-. Interestingly, results also suggested that poor gait in the Older HD- related to poor balance, while no correlation was observed between poor balance and poor gait among the Older HD+. Using objective assessments, results confirmed that the presence of diabetes can deteriorate gait and balance, and this deterioration can be magnified by HD process. Among non-HD people with diabetes, poor static balance described poor gait. However, among people with diabetes undergoing HD, age was a dominate factor describing poor gait irrespective of static balance. Results also suggested feasibility of using wearable platforms to quantify motor performance during routine dialysis clinic visits. These objective assessments may assist in identifying early deterioration in motor function, which in turn may promote timely intervention.
Virulence Effectors of Pathogenic Mycoplasmas
Authors: May Meghan A. , Brown Daniel R.
Published: September 2018

Members of the genus Mycoplasma and related organisms impose a substantial burden of infectious diseases on humans and animals, but the last comprehensive review of mycoplasmal pathogenicity was published 20 years ago. Post-genomic analyses have now begun to support the discovery and detailed molecular biological characterization of a number of specific mycoplasmal virulence factors. This review covers three categories of defined mycoplasmal virulence effectors: 1) specific macromolecules including the superantigen MAM, the ADP-ribosylating CARDS toxin, sialidase, cytotoxic nucleases, cell-activating diacylated lipopeptides, and phosphocholine-containing glycoglycerolipids; 2) the small molecule effectors hydrogen peroxide, hydrogen sulfide, and ammonia; and 3) several putative mycoplasmal orthologs of virulence effectors documented in other bacteria.  Understanding such effectors and their mechanisms of action at the molecular level connects the biology of the bacteria to direct effects on the host and host responses they elicit, and is expected to translate into new interventions for human and veterinary mycoplasmosis.
Source Contributions to Ozone Formation in the New South Wales Greater Metropolitan Region, Australia
Authors: Nguyen Duc Hiep , Chang Lisa T.-C. , Trieu Toan , Salter David , Scorgie Yvonne
Published: September 2018

Ozone and fine particles (PM2.5) are the two main air pollutants of concern in the New South Wales Greater Metropolitan Region (NSW GMR) region due to their contribution to poor air quality days in the region. This paper focuses on source contributions to ambient ozone concentrations for different parts of the NSW GMR, based on source emissions across the greater Sydney region. The observation-based Integrated Empirical Rate Model (IER) was applied to delineate the different regions within the GMR based on the photochemical smog profile of each region. Ozone source contribution is then modelled using the CCAM-CTM (Cubic Conformal Atmospheric Model-Chemical Transport Model) modelling system and the latest air emission inventory for the greater Sydney region. Source contributions to ozone varied between regions, and also varied depending on the air quality metric applied (e.g., average or maximum ozone). Biogenic volatile organic compound (VOC) emissions were found to contribute significantly to median and maximum ozone concentration in North West Sydney during summer. After commercial domestic, power station was found to be the next largest anthropogenic source of maximum ozone concentrations in North West Sydney. However, in South West Sydney, beside commercial and domestic sources, on-road vehicles were predicted to be the most significant contributor to maximum ozone levels, followed by biogenic sources and power stations. The results provide information which policy makers can devise various options to control ozone levels in different parts of the NSW Greater Metropolitan Region.
Reuse of Electrocoagulated Metal Hydroxide Sludge to Fluoride and Arsenic Removal by a Fixed-Bed Column in Continuous Operation
Authors: García-Gómez Celestino , Rivera-Huerta María Lourdes , Almazán-García Fabián , Martín-Domínguez Alejandra , Burboa-Charis Vianey Ariadna , Romero-Soto Itzel Celeste , Ulloa-Mercado Ruth Gabriela , Serrano-Palacios Denisse , Gortáres-Moroyoqui Pablo
Published: September 2018

In the present study, Electrocoagulated Metal Hydroxide Sludge (EMHS) was analyzed as adsorbent material to remove both fluoride ion (F-) and arsenic V (As(V)) from aqueous effluents. This material was generated during an electrocoagulation process using Aluminum anode. It was characterized by using specific surface areas and the surface morphology was studied by scanning electron microscopy (SEM). Adsorbent fixed-beds are generally studied to remove different class of contaminants. EMHS was evaluated using a continuous flow rate column test with an experimental design. The effect of initial concentration of F- (2.5–10 mg L−1) and the Empty Bed Contact Time (EBCT (0.4–0.8 min)) was studied following a central composite design methodology. The experimented parameters had a significant influence on saturation time, breakthrough volume, and breakthrough time. A response surface analysis was a tool for analyzing the adsorption study, showing interactions that are complicated to identify by others methods. The results, here reported, revealed that EMHS is an efficient and promising adsorbent material in order to remove F- and As(V) from water contaminated by these pollutants.
A Review on Fault Current Limiting Devices to Enhance Fault Ride-through Capability of Doubly Fed Induction Generator Based Wind turbine
Authors: Naderi Seyed Behzad , Davari Pooya , Zhou Dao , Negnevitsky Michael , Blaabjerg Frede
Published: September 2018

The Doubly-Fed Induction Generator (DFIG) has significant features in comparison with Fixed Speed Wind Turbine (FSWT), which has popularized its application in power system. Due to partial rated back-to-back converters in the DFIG, Fault Ride-Through (FRT) capability improvement is one of the great subjects regarding new grid code requirements. To enhance the FRT capability of the DFIG, many studies have been carried out. Fault current limiting devices as one of the techniques are utilized to limit the current level and protect switches of the back-to-back converter from over-current damage. In this paper, a review is done based on fault current limiting characteristic of the proposed fault current limiting devices Therefore, Fault Current Limiters (FCLs) and Series Dynamic Braking Resistors (SDBRs) are mainly taken into account. Operation of all configurations including their advantages and disadvantages is explained. Impedance type and the fault current limiting devices’ location are two important factors, which significantly affect the DFIG behaviour in the fault condition. These two factors are basically studied by the simulation and their effects on the key parameters of the DFIG are investigated. Finally, future works in respect to the FCL application in the FRT improvement of the DFIG have also been discussed.
KEMAMPUAN BERPIKIR TINGKAT TINGGI (HOTS) TENTANG LINGKUNGAN BERDASARKAN LATAR BELAKANG AKADEMIK SISWA
Authors: Nisa Nur Choerun , Nadiroh Nadiroh , Siswono Eko
Published: September 2018

The objectives of this research is try to finding out the information about the effect of academic background of students on the ability of high-level thinking (HOTS) in the  environment. An ex post facto method has been applied by involving n= 120 students at SMA Negeri 21 Jakarta. Data was analyzed by Paired Sample T-tes. The results revealed that there were significant differences of studentâ€™s HOTS who come from academic background of MIA (Mathematics of Natural Sciences) and the academic background of IIS (Social Sciences). Therefore, to be considered about academic background factors that can lead students to improve HOTS in the environment. Further research on other variables that can influence HOTS in the environment, the background of respondents not only on the students but can be done to the general public because the environment to be the obligation of all the inhabitants of the earth. Environment has become the dominant issue in the beginning of this century, we need to re-educate our thinking, with further possibility to rekindle our hope of a future with dignity for all.
PENGEMBANGAN BAHAN AJAR PENDIDIKAN LINGKUNGAN BERBASIS KEARIFAN LOKAL
Authors: Kurniadi Romi
Published: September 2018

This study aims to identify the concept and economic effects of local wisdom in environmental management. The results of the assessment will be developed as teaching materials on economic subjects. The method used is through the literature review related to the form of environmental management of Sungai Rangau watershed through local wisdom. The results of this study indicate that local wisdom-based environmental management has been conducted by Rantau Kopar communities living along the Rangau River flow in the planning, utilization, control and maintenance phase. Environmental management based on local wisdom is considered more economical compared to environmental exploitation which raises higher environmental normalization cost. Suistinable  environmental maintenance will become the solution of scarcity problem, therefore the results of this study are appropriate to be applied as additional material in economic learning in high school in Basic Competence 3.1.2 on Analyzing economic problems and how to overcome them.
PENGARUH MEDIA SLIDE PRESENTASI DALAM MENUNJANG PENINGKATAN PENGETAHUAN TENTANG GERAKAN SHODAQOH SAMPAH MUHAMMADIYAH PADA SISWA KELAS V SD MUHAMMADIYAH 4 SAMARINDA KALIMANTAN TIMUR
Authors: Habibi Muhammad , Rusdi Rusdi
Published: September 2018

Abstract

 

School is one of the means for landfill. Therefore, it needs to be overcome wisely. One way to overcome this is to do rubbish shodaqoh. The movement of rubbish shodaqoh is a program from the Muhammadiyah Environmental Assembly in managing the rubbish to save the environment and make it economical by providing a theological touch in it. The movement of rubbish shodaqoh needs to be understood by students through briefing by using interesting media so that the students can easily understand it. Media was used is presentation slides. The research aim was to know the influence of the presentation slide media in supporting the increase of knowledge about the movement of Muhammadiyahâ€™s rubbish shodaqoh for grade 5 students of Muhammadiyah 4 Elementary School of Samarinda, East Borneo. The type of the research is pre-experiment using one group pretest-postest design. Samples were grade 5 students of Muhammadiyah 4 Elementary School of Samarinda. The sampling technique is carried out by using simple random sampling. The research findings, with the use of the wicoxon test, obtain p-value of 0.000 (< 0.05), so it was concluded that presentation slide media have effect in supporting the increase of knowledge about the movement of Muhammadiyahâ€™s rubbish shodaqoh for grade 5 students of Muhammadiyah 4 Elementary School of Samarinda, East Borneo.
Nanopartículas de plata: un enfoque en aplicaciones biológicas
Authors: Diaz Acosta Edgar Manuel
Published: September 2018

El objetivo del artículo es realizar una breve descripción del papel de las Ag np’s, la funcionalización en su superficie, así como la mención de su síntesis, técnicas de caracterización y tendencias a futuro en investigación. Las tendencias a futuro proponen la síntesis de estas nanopartículas mediante técnicas de química verde para disminuir su impacto sobre el medio ambiente, y su uso como biosensores de células cancerígenas para optimizar diagnósticos y tratamientos. 
Regulando la nanotecnología
Authors: Saldivar Tanaka Laura
Published: September 2018

Este trabajo constituye un modesto acercamiento y aporte al tema de la regulación de la nanotecnología (nt) y nanomateriales (nm’s) o nanoformas,1 de su producción, comenzando con una revisión de distintos argumentos del porqué es necesario contar con instrumentos normativos y una breve explicación de las distintas formas en que esto puede suceder (obligatorias, voluntarias, horizontales, verticales, locales, nacionales, internacionales). Posteriormente se hace un apretado recuento de dos de los principales marcos regulatorios en la materia, el de la Comunidad Europea y el de los Estados Unidos de América (EUA). Finalmente, también se hace mención de los esfuerzos que en México se realizan en esta área. 
An Obstract for Midpointness
Authors: Andrew Bracey  , Steve Dutton
Published: September 2018

Our aim here is to both provide a response to the Conference ‘Please Specify!’ and to find an alternate way of ensuring that the intrinsic generative nature of research and art is kept active, akin to the mobius strip-like path of both conclusions, and openings.

“Midpointness” is a generative project. It is dismantled and reconstructed through the gradual accretion of surrounding connections, associations and influences of the curators, artists, students and other audiences who contribute to it. These are in the form of artworks, public events, texts, artefacts, performances or other interventions. 'An Obstract for Midpointness' (Obstract)is a piece of artistic research constructed before, during and after, "PLEASE SPECIFY!", The SAR Annual Conference 2017.

'Obstract' is as an element of the ongoing project “Midpointness” that seeks to invite us to consider the ‘work’ of art as art’s labour or task. We seek to explore the dynamics of inner/outer dialogues of the process of artistic work, opening up other potentials that an artist researcher might hope for when he/she explores the generative potential of the work of artistic research directly within and in response to a conference about artistic research.

At the centre is spoken text that is a play on the tradition of the conference ‘abstract.’ The abstract is the site of an outline of intention, yet here we couple it with an ‘obstruction’ as a means of aggravating and diverting the attempt at a conclusion towards which an abstract, and indeed a formal presentation, might be aimed. “Obstract” suggests, by a process of intervention that the ‘centre’ (the work and/or the text) and its surrounding universe are completely indivisible. As such the principle of ‘footnotes’ filter through to the whole spoken text; the footnotes being analogous to the surrounding constellations within which the ‘centre’ of the work sits, swapping footnotes for centre and vice versa. The footnotes refer to points both real and imagined in the past, present and future.