bluuebunny/crossref_metadata_2025 huggingface dataset:
ANOMALÍAS NUCLEARES EN CÉLULAS EXFOLIADAS DE LA MUCOSA BUCAL DE ESTUDIANTES FUMADORES
Authors: E. Tonina, , T. Garcete, , M.J. Samaniego, , R. Aveiro, , J. Ortiz, , C. Benítez, , P. Widjaja, , C. Mag. Castiglioni, , J. Lic. Segovia, , D. Lic. Franco de Diana,
Published: April 2017

Introducción: En el humo del cigarrillo se encuentran numerosos compuestos orgánicos específicos del tabaco que alteran el material genético de las células, evidenciado como anomalías nucleares. Metodología: Mediante la técnica de Feulgen, se evaluó la frecuencia de estas alteraciones, en células exfoliadas de la mucosa bucal de 49 estudiantes de Medicina. Resultados: Se observó un aumento significativo en la frecuencia de cariolisis (0.092% vs 0.009% en no fumadores), micronúcleo (0.074% vs 0.011% en no fumadores), picnosis (0.028% vs 0.007% en no fumadores), Broken eggs (0.028% vs 0.006% en no fumadores) y cariorrexis (0.046% vs 0.0015% en no fumadores), para la prueba de T-Student (p<0.05 en el total de células de los estudiantes fumadores. Conclusión: Esta observación indica que la exposición a los componentes encontrados en el humo del cigarrillo podría inducir con mayor frecuencia a la necrosis celular, y en menor escala, a la apoptosis y efectos genotóxicos.Palabras clave: Genotoxicidad, necrosis, apoptosis, mucosa bucal, Hábito de Fumar, Técnica de Feulgen (DeCS)
ICTUS ISQUÉMICO EN LACTANTE MAYOR CON INICIO DE INTOXICACIÓN POR ALCOHOL:REPORTE DE CASO
Authors: T Dianderas-Perez
Published: April 2017

Caso clínico: Lactante mayor femenino de 22 meses, quien posterior a 6 horas de la ingesta de bebida alcohólica (caña clara), con graduación alcohólica de 35 de 54 volúmenes, es llevada a Emergencia del Hospital Central de Maracay, presentando convulsiones tónico clónica de 4 horas de evolución, concomitante parálisis facial y disnea progresiva que le condujo a paro respiratorio ameritando intubación endotraqueal y ventilación mecánica, quedando ingresada en terapia intensiva pediátrica de dicho centro. Antecedentes de importancia, podemos citar: Ingesta de alcohol etílico y antecedentes virales de hace 4 meses. Los exámenes complementarios constataron la intoxicación etílica y el TAC reporta “imagen sugestiva de evento isquémico a nivel de hemisferio cerebral derecho”. Motivo de reporte: Se trata de un caso clínico raro de presentación de ICTUS con punto de partida intoxicación etílica en lactante de 22 meses, presentado isquemia y con afectación del lóbulo cerebral derecho. Conclusión: Estudios de imagen como la resonancia cerebral es altamente sugestiva de aparente ACV de etiología isquémica que compromete el hemisferio cerebral derecho en toda su extensión, teniendo en cuenta los antecedentes de una enfermedad viral y la ingestión de cantidad desconocida de alcohol. Por tal motivo se decide su ingreso en terapia pediátrica de este centro para valoración y seguimiento.Palabras Clave: Ictus; intoxicación; lactante (Fuente : DeCS BIREME)
VASCULITIS AGUDA NEUTROFÍLICA LEUCOCITOCLÁSTICA NECROTIZANTE
Authors: Verónica Rotela Fisch, , María de Fátima Agüero Zaputovich, , Beatriz Di Martino Ortíz, , Mirtha Rodríguez-Masi, , Oilda Knofelmacher, , Lourdes Bolla de Lezcano,
Published: April 2017

Las vasculitis forman un grupo heterogéneo de enfermedades con causas diferentes y son procesos clínico-patológicos caracterizados por inflamación y necrosis de los vasos sanguíneos, independientemente del tamaño de estos, la causa, u órganos afectados (1,2). La afectación cutánea es frecuente, como única manifestación o en cuadros con compromiso sistémico. Clínicamente se traducen en lesiones tipo púrpura palpable, que pueden ser dolorosas (2,3).
VARIABLES SOCIODEMOGRÁFICAS Y PSICOSOCIALES DEL INTENTO SUICIDA EN PACIENTES PEDIÁTRICOS, HOSPITAL ESCUELA UNIVERSITARIO, TEGUCIGALPA 2012-2015
Authors: Rivas-Sevilla Katherine , Yanez-Salguero Valeria , Ramírez-Izcoa Alejandro , Díaz-Valle Deysi Julissa , Bueso-Contreras Oscar Joaquín , Godoy-Mejía Carlos , Barahona-Rivera Jessica
Published: April 2017

Objetivo: Caracterización clínica y demográfica de los pacientes pediátricos con intento suicida del Hospital Escuela Universitario durante el periodo 2012-2015.Metodología: Estudio descriptivo, retrospectivo; el universo y la muestra estuvieron conformados por 336 expedientes de pacientes pediátricos con intento suicida, de los cuales 64 no cumplieron con los criterios de inclusión. Para la recolección de datos se utilizó una ficha basada en el estudio de Áñez-Valdez realizado en Venezuela en el año 2011, la cual fue adaptada a las condiciones de este estudio. Resultados: La media de edad fue de 15 años, el 87.9% fueron del género femenino, el principal motivo del intento suicida fue por motivo familiar (53.4%). En lo referente al método utilizado según la clasificación del CIE-10 para el intento suicida, se encontró que 78 (32.6%) de pacientes del género femenino y 10 (30.3%) del género masculino utilizaron drogas antiepilépticas, hipnóticas, sedantes y anti parkinsonianos. Conclusión: La media de edad de presentación del intento suicida fue de 15 años con una mínima de 10 años y el género femenino el predominante. El motivo principal para realizar el intento suicida fue debido a motivos familiares y el principal medio utilizado para llevarlo a cabo fue el uso de la acetaminofén. Casi un terciode los pacientes presentaron reincidencia suicida sin diferencias entre géneros. El principal medio utilizado por los pacientes que reintentaron suicidarse fueron las benzodiacepinas.Palabras clave: Intento de suicidio. Pediatría. Epidemiología. Caracterización clínica (DeCS)
TEST DEL COMETA EN SANGRE PERIFÉRICA DE ESTUDIANTES FUMADORES DE LA FACULTAD DE CIENCIAS DE LA SALUD, UNIVERSIDAD CATÓLICA NUESTRA SEÑORA DE LA ASUNCIÓN
Authors: E. Tonina, , T. Garcete, , M.J. Samaniego, , R. Aveiro, , A. Aranda, , J. Ortiz, , C. Benítez, , P. Widjaja, , D. Mag. Castiglioni, , J. Lic. Segovia, , D. Lic. Franco de Diana,
Published: April 2017

Introducción. El hábito de fumar es considerado un factor de riesgo para diversas enfermedades debido a sus componentes químicos tóxicos, que generan especies reactivas de oxigeno (ROS). Estas inician el daño oxidativo en el ADN, ocasionando roturas de las cadena, alterando la estabilidad y el funcionamiento del ADN en los procesos biológicos Metodología. Mediante la técnica del cometa, se evaluó el nivel de daño del ADN en las células de sangre periférica de 50 estudiantes de Medicina. Resultados: Se encontró un deterioro del material genético por rupturas de las hebras de ADN, evidenciado por la diferencia en los parámetros TM, OMT, Head DNA y Tail DNA con respecto a los no fumadores. Conclusión: El análisis de la calidad de ADN por los parámetros medidos con el ensayo cometa indican que la cantidad de ADN fragmentado está relacionada al daño celular que, a su vez, podría estar asociado al hábito de fumar.Palabras clave: Ensayo Cometa, Hábito de Fumar/Toxicidad, Daño del ADN, Estudiantes.(Fuente DeCS BIREME)
The discourse of early childhood education and fashioning of modern mothers
Authors: Toprak Ziya
Published: April 2017

This study is analyzes the discourse of early childhood education and the role of pedagogy in fashioning modern mothers. This case of this study is Mother-Child Education Foundation (MCEF). It analyzes the imaginary of MCEF, which opens up a “space of intervention” and is articulated through discourses of the normal development of children and modernizing motherhood. The analyses of this study consist of two parts. In the first part, the official social imaginary of MCEF as civil society organization is interpreted. In the process of interpretation I problematized the projects and techniques deployed in MCEF programs via using analytical tools provided by governmentality studies. Second part of the analyses is concerned with MCEF’s Mother Child Education Program (MOCEP) as a mechanism to fashion modern mother.
Okul öncesi öğretmenlerinin sınıf uygulamalarında matematik dilini kullanma sıklıkları ile pedagojik matematik içerik bilgileri arasındaki ilişki
Authors: Parpucu Nurbanu , Erdoğan Serap
Published: April 2017

Bu araştırmanın amacı okul öncesi öğretmenlerinin pedagojik matematik içerik bilgileri ile sınıf içi uygulamalarında kullandıkları matematik dili arasındaki ilişkiyi tespit etmektir. Araştırmanın örneklemini, Eskişehir ilinde İl Milli Eğitim Müdürlüğüne bağlı anaokullarından uygun örnekleme yöntemiyle seçilmiş iki bağımsız anaokulundaki 21 öğretmen oluşturmaktadır. Öğretmenin sınıf içinde matematik dilini kullanma sıklığını belirlemek için Klibanoff ve diğerlerinin (2006) kategorileri kullanılmıştır. Ardından veri toplama aracı olarak “Okul Öncesi Matematiksel Pedagojik İçerik Bilgisi (OMPİB) Ölçme Aracı” kullanılmıştır. Elde edilen veriler frekans, parametrik olmayan testlerden Kruskal Wallis Testi ve Sperman Korelasyon Testi ile analiz edilmiştir. Araştırma sonucunda öğretmenlerin sınıf uygulamalarında matematik dilini kullanma sıklıkları ile pedagojik matematik puanları arasında anlamlı olmayan düşük bir ilişki olduğu sonucuna ulaşılmıştır. Öğretmenlerin pedagojik matematik puanları ve  matematik dilini kullanma sıklıklarının mesleki deneyimlerine göre değişmediği bulunmuştur. Ayrıca öğretmenlerin daha çok sayma ve sayı sembollerine ilişkin matematik dili kullanmayı tercih ederken, hesaplamaya yönelik matematiksel dilin kullanılmadığı görülmüştür. Öğretmenlerin deneyim yıllarına göre sınıf içinde matematik dilini ilk yıllarda az, 6-10 yıllar arasında daha çok kullanıldığı ve ilerleyen yıllarda yeniden bu kullanımın azaldığı bulunmuştur.
Okul öncesi eğitimde proje yaklaşımı uygulamalarının temel bilimsel süreç becerilerini kapsama durumunun incelenmesi
Authors: Kefi Sara
Published: April 2017

Bu araştırmada, okul öncesi eğitimde proje yaklaşımı uygulamalarında çocukların, temel bilimsel süreç becerilerini kullanıp kullanamama durumlarının belirlenmesi amaçlanmıştır. Belirlenen amaç doğrultusunda araştırmacı tarafından iyi örnek niteliğinde geliştirilen 6 projenin, Foça Belediyesi Çocuk Evinde 4-5-6 yaş gruplarında sınıf öğretmenleri tarafından uygulanmasına rehberlik edilmiştir. Araştırmanın verilerini uygulanan projelerin başlangıç, gelişme ve sunum aşamalarından elde edilen “3600 fotoğraf, video, resim, kavram ağı, grafik, deney, oyun, yaratıcı sanat çalışması, anket, albüm, aile katılımı çalışması, sunum belgeleri” ve benzeri gibi dokümanlar içerik analizi ile çözümlenmiştir. Araştırmada, temel bilimsel süreç becerilerini kapsama durumlarına yönelik olarak nitel araştırma desenlerinden içerik analizi tekniği kullanılmıştır. Bu araştırmada uygulanan “su, saat, ekmek, kağıt, poşet, top”, konulu projelerin tümünden elde dilen bulgular çocukların, yaş gruplarıyla orantılı olarak, temel bilimsel süreç becerilerinin her birini pek çok kez tekrar ederek kullandıklarını göstermektedir. Elde edilen bu sonuçlar ile okul öncesi dönem çocuklarının doğrudan dahil oldukları proje çalışmalarının onların temel bilimsel süreç becerilerini kullanmalarını desteklediği, dolayısı ile proje yaklaşımı uygulamalarının temel bilimsel süreç becerilerinin kullanımını kapsadığı söylenebilir. Erken yaşlardan itibaren temel bilimsel süreç becerilerinin kazanılmasının, ileride bütünleştirilmiş süreç becerilerinin kazanımının bir ön koşulu olduğu göz önüne alındığında temel bilimsel süreç becerilerinin her birini kapsayacak proje yaklaşımı uygulamalarından sıklıkla yararlanılması önerilmektedir.
A Model-based Scalable Reliable Multicast Transport Protocol for Satellite Networks
Authors: Chumchu Prawit , Boreli Roksana , Seneviratne Aruna
Published: April 2017

In this paper, we design a new scalable reliable multicast transport protocol for satellite networks (RMT). This paper is the extensions of paper in [18]. The proposed protocoldoes not require inspection and/or interception of packets at intermediate nodes. The protocol would not require anymodification of satellites, which could be bent-pipe satellites or onboard processing satellites. The proposed protocol is divided in 2 parts: error control part and congestion control part. In error control part, we intend to solve feedback implosion and improve scalability by using a new hybrid of ARQ (Auto Repeat Request) and adaptive forward error correction (AFEC). The AFEC algorithm adapts proactive redundancy levels following the number of receivers and average packet loss rate. This leads to a number of transmissions and the number of feedback signals are virtually independent of the number of receivers. Therefore, wireless link utilization used by the proposed protocol is virtually independent of the number of multicast receivers. In congestion control part, the proposed protocol employs a new window-based congestion control scheme, which is optimized for satellite networks. To be fair to the other traffics, the congestion control mimics congestion control in the wellknown Transmission Control Protocol (TCP) which relies on “packet conservation” principle. To reduce feedback implosion, only a few receivers, ACKers, are selected to report the receiving status. In addition, in order to avoid “drop-to-zero” problem, we use a new simple wireless loss filter algorithm. This loss filter algorithm significantly reduces the probability of the congestion window size to be unnecessarily reduced because of common wireless losses. Furthermore, to improve achievable throughput, we employ slow start threshold adaptation based on estimated bandwidth. The congestion control also deals with variations in network conditions by dynamically electing ACKers.
Video Smoothing of Aggregates of Streams with Bandwidth Constraints
Authors: Camarda Pietro , Guaragnella Cataldo , Striccoli Domenico
Published: April 2017

Compressed variable bit rate (VBR) video transmission is acquiring a growing importance in the telecommunication world. High data rate variability of compressed video over multiple time scales makes an efficient bandwidth resource utilization difficult to obtain. One of the approaches developed to face this problem are smoothing techniques. Various smoothing algorithms that exploit client buffers have been proposed, thus reducing the peak rate and highrate variability by efficiently scheduling the video data to be transmitted over the network. The novel smoothing algorithm proposed in this paper, which represents a significant improvements over the existing methods,performs data scheduling both for a single stream and for stream aggregations, by taking into account available bandwidth constraints. It modifies, whenever possible, the smoothing schedule in such a way as to eliminate frame losses due to available bandwidth limitations. This technique can be applied to any smoothing algorithm already present in literature and can be usefully exploited to minimize losses in multiplexed stream scenarios, like Terrestrial Digital Video Broadcasting (DVB-T), where a specific known available bandwidth must be shared byseveral multimedia flows. The developed algorithm has been exploited for smoothing stored video, although it can also be quite easily adapted for real time smoothing. The obtained numerical results, compared with the MVBA, another smoothing algorithm that is already presented and discussed in literature, show the effectiveness of the proposed algorithm, in terms of lost video frames, for different multiplexed scenarios.
A Data Rate Maximization Algorithm for Multiuser OFDM Systems
Authors: Ilic Zeljko , Bazant Alen
Published: April 2017

In this paper, we present suboptimal integer bit allocation algorithm that maximizes overall data rate in multiuser orthogonal frequency division multiplexing (OFDM) systems implemented in wireless networks. Assuming knowledge of the instantaneous channel gains for all users, we propose a new multiuser OFDM loading algorithm, with constrains, that maximizes the total data rate in downlink transmission. This is done by solving the maximization problem in two steps. First step provides subcarrier assignment to users based on users' requests on quality of service (QoS) expressed in terms of a minimum signal-to-noise ratio (SNR) on each subcarrier. The second step provides bit and power allocation to subcarriers in order to maximize overall data rate. In order to reduce the computational complexity of the proposed problem wepropose a simple method, in the form of a theorem, which assigns subcarriers to users and distributes bits and power among them. We have tested the proposed algorithm in a multiuser environment for various subcarrier SNR values requested by users, and for various levels of interference in the OFDM system. The results show that our loading method obtains a better data rate in some situations than the algorithm described in [5], which states that the data rate of a multiuser OFDM system is maximized when each subcarrier is assigned to only one user. Results show that the total number of bits per OFDM symbol or data rate grows with the number of users in the system.
Simulation of Electromagnetic Coupling on Pipelines close to Overhead Transmission Lines: A Parametric Study
Authors: Al-Badi A. H. , Al-Rizzo H. M.
Published: April 2017

Electromagnetic interference effects caused by electric power lines on neighboring metallic utilities such as water, gas or oil pipelines became a major concern due tosignificant increase in the load and short circuit current levels needed to satisfy the load requirements. Another reason for increased interference levels originates from the environmental concerns, which impose on various utilities the obligation to share common corridors. This paper presents three different scenarios of a pipeline in which all types of electromagnetic interferences (coupling) will be investigated and their effects on the pipeline will be predicted. The level of the calculated voltage, owing to each type of coupling, depends on different factors (voltage level, length of parallelism, separation distance, soil resistivity, load current magnitude and pipeline coating). The effects of these factors are discussed; some factors such as the fault current level, separation distance and soil resistivities are found to exhibit a large influence on the pipeline voltage. To the best of the authors’ knowledge, the comprehensive analyses presented in this paper considering all types of interferences have not yet been publishedelsewhere.
Multi-code Multicarrier CDMA: Performance Analysis
Authors: Kim Taeyoon , G. Andrews Jeffrey , Kim Jaeweon , Rappaport Theodore S.
Published: April 2017

A new multi-code multicarrier code division multiple access (MC-MC-CDMA) system is proposed and analyzed in afrequency selective fading channel. By allowing each user to transmit an M-ary code sequence, the proposed MC-MC-CDMA system can support various data rates as required by next generation standards without increasing the interference which is common in general multicarrier CDMA systems. The bit error rate of the system is analytically derived in frequency selective fading, with Gaussian noise and multiple access interference. The results show that the proposed MC-MC-CDMA system clearly outperforms both single-code multicarrier CDMA (MC-CDMA) and single-carrier multi-code CDMA in a fixed bandwidth allocation.This indicates that MC-MC-CDMA can be considered for next generation cellular systems.
Study of Power Consumption in a Cooperative Wireless Network
Authors: Emamian Vahid
Published: April 2017

A cooperative wireless network is defined to be a network where nodes cooperate in routing and/or improving thequality of transmission of each other’s packets [1]-[5]. Thecooperation is especially useful when the channel between a pair of nodes (source and destination) is in a deep shadow-fading state. In this situation increasing the power level may either not resolve the problem or be too power consuming, while generating interference for other receivers on the same channel. A cooperating node, which has good propagation channels to both the source and the destination, may be used to relay the packets between them. This paper presents the comparison of theaverage amounts of power consumed by nodes in a standard wireless network that uses single-hop transmission and a cooperative wireless network that uses two-hop transmission. It is shown that under certain conditions the ratio of the average power consumptions in the two networks, when N cooperating nodes on average are available for each node, can be approximated by k ln N + q. The constants k and q are related to the propagation channel. For a Nakagami fading channel with parameter m, k =1/ lnm and q=1, while for a shadowing channel with standard deviation σdB, k =σdB/ √ π and q = 0.23σdBdB.
PENERAPAN KONSEP SAAS (SOFTWARE AS A SERVICE) PADA APLIKASI PENGGAJIAN
Authors: Utomo Andy Prasetyo
Published: April 2017

ABSTRAK Salah satu layanan yang ditawarkan oleh cloud computing adalah Software as a Service (SaaS). SaaS menawarkan sebuah kemudahan, kecepatan efisiensi biaya dalam mengembangkan dan menggunakan software untuk kebutuhan bisnis. Konsep SaaS ini akan diterapkan pada aplikasi penggajian berbasis desktop dengan menggunakan tool VFP2IIS. Prototype aplikasi penggajian yang dihasilkan, dikembangkan dengan menggunakan metode perancangan OOD (Object Oriented Development) dengan tool UML (Unified Modelling Language). Prototype aplikasi yang dihasilkan berbasis WEB dengan menganut konsep SaaS. . Kata kunci: SaaS, aplikasi pengajian, OOD, UML.
ANALISIS PENGGUNAAN METODE MARKER TRACKING PADA AUGMENTED REALITY ALAT MUSIK TRADISIONAL JAWA TENGAH
Authors: Setyawan Risyan Arief , Dzikri Afdhol
Published: April 2017

Aplikasi Augmented Reality alat musik tradisional jawa tengah adalah sebuah aplikasi tentang alat musik tradisional jawa tengah. Pembuatan aplikasi tersebut menggunakan metode single marker dan 3D objek tracking. Oleh karena itu pada pembuatan Tugas Akhir ini, aplikasi tersebut dilakukan modifikasi dari single marker menjadi markerless sehingga mampu melakukan scanning tanpa membuat marker atau penanda objek 2D. selanjutnya, aplikasi setelah pengembangan tersebut dilakukan pengujian serta perbandingan untuk menemukan tingkat kecepatan proses pemunculan objek 3D. Pengujian terhadap aplikasi dilakukan dengan jarak antara kamera smartphone dengan marker dan warna marker yang harus digunakan. Adapun parameter warna marker adalah warna biru dan warna kuning dengan jarak 30 Cm dan 50 Cm, dari hasil pengujian tersebut didapatkan jarak optimal adalah 30 Cm, semakin jauh jarak marker dan kamera maka kemunculan objek semakin lama, serta saat menggunakan warna yang kurang terang atau warna biru, objek muncul lebih lama dibanding warna kuning. Kata kunci: augmented reality, makerless, alat musik, jarak, warna, single marker.
PREDIKSI BISNIS FOREX MENGGUNAKAN MODEL NEURAL NETWORK BERBASIS ADA BOOST MENGGUNAKAN 2047 DATA
Authors: Suyatno Suyatno , Riyoko Sisno , Kusumodestoni R. Hadapiningradja
Published: April 2017

Setelah melakukan penelitian dan percobaan maka didapatkan hasil penelitian pertama yang telah dilakukan dengan menggunakan Algoritma Neural Network Backpropagatioan dengan menggunakan data sebanyak 268 menunjungkan tingkat akurasi error prediksi pada waktu prediksi per 5 menit sebesar 0.758619403, bila menggunakan data sebanyak 2047 menunjukkan tingkat akurasi error prediksi sebesar 0.500161212 dan hasil penelitian kedua yang telah dilakukan menggunakan Algoritma Optimasi Adaboost pada proses trainning dan ditambah Neural Network Backpropagation pada proses learning menunjukkan tingkat akurasi error prediksi pada waktu prediksi per 5 menit menggunakan data sebanyak 268 sebesar 0.397014925, bila menggunakan data sebanyak 2047 menunjukkan tingkat akurasi error prediksi sebesar 0.099951148. Tahap awal dalam melakukan penelitian ini sampai dengan pengujian menggunakan perhitungan prediksi nilai akurasi error menggunakan rumus MSE (Mean Sequare Error) dengan menggunakan algoritma optimasi adaboost untuk memberikan jawaban atas permasalahan bahwa nilai akurasi error Algoritma Neural Network Backpropagation perlu direndahkan agar akurasi prediksi meningkat dan tahap kedua dilakukan uji coba menggunakan data yang lebih banyak dibandingan dengan tahap ke satu. Berdasarkan hasil penelitian yang telah dilakukan, dapat disimpulkan bahwa Algoritma Neural Network memiliki akurasi yang lebih rendah bila dibandingkan dengan akurasi menggunakan metode optimasi adaboost pada proses trainning ditambah dengan Neural Network, ini dapat dilihat dengan rendahnya tingkat error MSE menggunakan metode adaboost + neural network dan dapat disimpukan pula bahwa dengan menggunakan jumlah data yang lebih banyak maka dapat menurunkan tingkat akurasi error MSE sehingga berhasil meningkatkan akurasi prediksi dalam bisnis forex trading. Kata kunci: forex, trading, neural network, adaboost, central capital futures.
IMPLEMENTASI INVERTER SEBAGAI PENGENDALI MOTOR INDUKSI TIGA FASA DENGAN METODE SPACE VECTOR PULSE WIDTH MODULATION (SVPWM)
Authors: Nugroho Emmanuel Agung
Published: April 2017

Penelitian ini merancang dan menganalisa inverter 3 fasa sebagai pengendali motor induksi 3 fasa dengan metode Space Vector Pulse Width Modulation (SVPWM) menggunakan IC terprogram. Pengujian dilakukan untuk membuktikan bahwa inverter terkendali SVPWM memiliki efisiensi tegangan keluaran lebih baik jika dibandingkan dengan Variable Speed Drive (VSD) inverter yang dijual dipasaran. Data hasil pengujian yang dilakukan dengan menggunakan osiloskope, volt meter dan clamp arus membuktikan hasil perancangan inverter terkendali SVPWM memiliki efisiensi tegangan keluaran sebesar 83,3 % pada frekuensi 50 Hz. Hal ini lebih baik jika dibandingkan Variable Speed Drive dengan metode Volt/Hertz control yang menghasilkan efisiensi tegangan keluaran pada frekuensi 50 Hz sebesar 75,9%. Pada pengujian motor induksi 3 fasa 2,2 KW membuktikan metode SVPWM Inverter mampu menekan arus mula sebesar 59,1% dan menekan konsumsi arus nominal pada frekuensi 50 Hz sebesar 90,1 %. Kata kunci: motor induksi, variable speed drive, inverter 3 fasa, space vector pulse width modulation (SVPWM)
ANALISIS PERUBAHAN GARIS PANTAI DI PANTAI BARAT DAYA PULAU TERNATE, PROVINSI MALUKU UTARA
Authors: Angkotasan Abdul Motalib , Nurjaya I Wayan , Natih Nyoman M.N.
Published: April 2017

Penelitian ini tentang analisis perubahan garis pantai di pantai Barat Daya Pulau Ternate, Provinsi Maluku Utara. Kajian ini dilakukan untuk menganalisis perubahan garis (abrasi dan sedimentasi) selama 11 tahun dari tahun 2001-2011. Penelitian ini dilatarbelakangi oleh realitas di Pantai Barat  Daya Pulau Ternate yang telah mengalami abrasi dan sedimentasi sampai ke  pemukiman warga. Belum ada kajian yang komperhensif mengenai seberapa besar tingkat perubahan garis pantai yang terjadi, dan faktor-faktor apa saja yang menyebabkan terjadinya perubahan tersebut. Tujuan dari penelitian ini adalah untuk transformasi gelombang dan perubahan garis pantai yang terjadi di Pantai Barat Daya Pulau Ternate. Analisis perubahan garis pantai dilakukan dengan menggunakan dua pendekatan yakni menggunakan model LITPACK MIKE DHI dan digitasi citra menggunakan citra landsat 7 ETM+.  Hasil analisis citra dijadikan sebagai pembanding untuk memvalidasi hasil keluaran model LITPACK MIKE DHI. Tumpang susun hasil analisis model dengan hasil analisis citra menunjukan pola kontur perubahan garis pantai yang sama. Berdasarkan hasil analisis model, menunjukan abrasi tertinggi terjadi di stasiun C (Pantai Sasa) sejauh 83.67 m dan sedimentasi terjadi di stasiun B sejauh 45.69 m, berdasarkan hasil analisis citra abrasi tertinggi terjadi di stasiun C sebesar 27.14 m dan sedimentasi terjadi di stasiun E sebesar 24.09 m. Besarnya abrasi dan sedimentasi dipengaruhi oleh aksi gelombang yang terjadi dan aktivitas penambangan pasir oleh masyarakat di pantai Barat Daya Pulau Ternate.
O PROBLEMA DO LIXO GERADO PELAS EMBALAGENS DE PIZZA NA CIDADE DE SÃO PAULO
Authors: Bueno Paula , Cora Antonio Felipe , Formigoni Alexandre
Published: April 2017

São Paulo gera em média 18 mil toneladas de lixo diariamente entre lixo comum (resíduos domiciliar), público ou especial, sendo que o resíduo domiciliar representa 12 mil toneladas/dia.

O site da Prefeitura de São Paulo informa que os trabalhos de coleta são executados pelas concessionárias Ecourbis e Loga, que percorrem diariamente uma área de 1.500 km² onde 11 milhões de pessoas são beneficiadas e onde mais de três mil pessoas trabalham no recolhimento desses resíduos com 500 caminhões além de outros veículos especializados para coleta de resíduos de saúde (Dados coletados no site da Prefeitura de São Paulo www.capital.sp.gov.br em outubro e novembro de 2016 e atualizado em janeiro de 2017).

Com esses números impressionantes é preciso analisarmos para onde vai todo esse material, que destino é dado a ele e se essa é realmente a melhor destinação a ser dada para esse lixo.

Esse estudo pretende trazer à tona a problemática do volume de lixo da cidade de São Paulo fazendo um recorte na categoria de resíduos sólidos, levantando a quantidade de lixo gerada especificamente pelas embalagens de pizza (só em São Paulo são consumidas 570 mil pizzas por dia que correspondem a 57% do volume total do país), analisando qual o destino final é dado para essas embalagens, como e onde são descartadas e ainda propondo uma reflexão de qual seria o melhor destino para elas no intuito de minimizar o impacto ambiental que provocam.

Para isso foi realizada uma pesquisa exploratória através de um levantamento bibliográfico e de dados secundários extraídos dos anais da Prefeitura de São Paulo e da PGIRS – Plano de Gestão Integrada de Resíduos Sólidos da Cidade de São Paulo.

Tomado conhecimento de um volume de lixo tão impressionante e nocivo para a cidade e que cresce exponencialmente esse estudo propõe não uma mudança no consumo da pizza, alimento tão intrínseco à cultura do paulistano e do brasileiro, mas sim uma nova forma de acondicioná-la e que possa ser reutilizada e reciclada diminuindo significativamente o impacto na natureza.
GESTÃO DE STAKEHOLDERS (GS) NO GERENCIAMENTO DE PROJETOS (GP): CASOS MÚLTIPLOS SOB A LUZ DO PMBOK
Authors: Gomes Marcus Brauer , Pazeto Amanda Borges de Oliveira , Tractenberg Leonel Estevao Finkelsteinas , Pinheiro Junior Luiz Pereira
Published: April 2017

No ano de 2013, o Project Management Institute (PMI) promoveu a inclusão de uma nova área de conhecimento destinada ao gerenciamento das partes interessadas ou stakeholders no Um Guia de Conhecimento em Gerenciamento de Projetos (PMBOK). Com isso, levantam-se questões sobre a importância desse tema e se existe a necessidade de trabalhar corretamente com os stakeholders para que o projeto seja eficaz e efetivo. O objetivo desta pesquisa foi analisar a importância da gestão das partes interessadas no gerenciamento de projetos. Buscou-se relacionar a gestão dos stakeholders com as principais falhas existentes durante a gestão de projetos, procurando descobrir se um inadequado gerenciamento das partes poderia contribuir para a incidência das mesmas. A coleta de dados em campo utilizado para obter as respostas consistiu na aplicação de um questionário eletrônico com perguntas abertas, elaborado a partir de revisão bibliográfica do tema. Sete experientes gerentes de projetos responderam ao questionário e, após a análise dos dados, identificou-se que se o gerenciamento dos stakeholders for feito corretamente pode minimizar problemas principalmente relacionados com a definição do escopo e, consequentemente, em outras áreas como prazo e custo. Conclui-se que a criação dessa nova área de conhecimento pelo PMI foi acertada e que os gerentes de projetos podem investir consideráveis recursos no gerenciamento das partes interessadas para que os escopos do produto e do projeto sejam bem definidos, e para que seja viabilizado o cumprimento do cronograma dentro do orçamento estabelecido.
ANÁLISE DE VIABILIDADE DOS CUSTOS PARA A REATIVAÇÃO DO TERMINAL DE CONCHAS NA HIDROVIA TIETÊ PARANÁ
Authors: Junior Moacir Freitas , Toloi Rodrigo Caio , Dos Reis João Gilberto Mendes
Published: April 2017

O transporte de grãos da produção até seus locais de transformação e/ou exportação tem no transporte sua maior dificuldade na cadeia de suprimentos. Apresentando a estrutura atual da Hidrovia Tiete-Paraná e, caracterizando os elementos de um projeto hidroviário. Este artigo teve como objetivo avaliar os custos com a reativação do terminal hidroviário localizado na cidade de Conchas/SP, apresentando suas vantagens, desvantagens e sua viabilidade no tocante aos custos, quando comparado e somado às despesas de transbordo e operação que ocorrem a partir da utilização dos modais rodoviário e ferroviário hoje, buscando alternativas para minimizar o impacto dos valores nessa movimentação, além da verificação do valor a desembolsar pela reativação desse terminal hidroviário. Os resultados indicam que a utilização trecho da Hidrovia Tiete-Paraná que liga Pederneiras/SP - Conchas/SP, permitirá além de uma significativa redução dos custos com o transporte, uma importante mitigação da emissão de GEE, que favoreceriam ao aumento da competitividade da produção brasileira.
Social Semiotics Evaluation of English One by Gender
Authors: Nabifar Nesa , Baghermousavi Mir Saeid
Published: April 2017

Textbooks receive focal attention in every educational setting. In 2013, the English text books used in Iranian schools were changed and new books, the Prospect series, were introduced. The older English text books are not used for teaching anymore. One of these was English One which was used for teaching the first grade at junior high school. As far as the researchers know, there was no previous research using this book in terms of gender from a semiotic point of view. Therefore, the researchers tried to investigate it in terms of social semiotics as defined by Kress and van Leeuwen (2006). Their findings showed that males are more often present in the images, and both genders are seen as collaborating with the readers of this book. Their findings also showed that both genders are trying to encourage the readers toward establishing communication by more often showing gaze towards each other in the images. This study has implication for students of linguistics, for course designers and for English teachers as well.
Character Metaphors in George Orwell’s Animal Farm
Authors: Fajrina Dian
Published: April 2017

Animal Farm was written by George Orwell in 1944 to criticize the Soviet Union leaders and their administration represented by animal characters. The objective of this study was to find out the resemblances between the character of Soviet Union leaders at the time the novel was written and those depicted in the novel. In analysing the objective of this study, content analysis was used. The data are the dialogues and other information in the novel concerning the metaphors of characters between the Soviet Union leaders of the 20th century and those in Animal Farm. The writer finds out that Jones metaphors Nicholas II, the last Tsar of Russian Monarchy, Old Major with his speech metaphors Karl Marx with his Communist Manifesto, Napoleon as Stalin, Snowball as Trotsky, Squealer as Pravda, the Russian Newspaper at that time, Frederick as German and Boxer as the type of gullibility proletariat. Indeed, George Orwell’s timeless work reminds us that totalitarianism could be harmful to one society.
Larvicidal potentials of Metarhizium anisopliae and Paecilomyces sp on Culex quinquefasciatus (Say) (Diptera: Culicidae)
Authors: Sani I I , Yusuf U , Suleiman M
Published: April 2017

Biological control potential of Metarhizium anisopliae and Paecilomyces species against Culex quinquefasciatus was evaluated. M. anisopliae and Paecilomyces spp was isolated from soil using soil suspension method with selective isolation media. Bioassay was made to determine their efficacy against 4th instar larvae of C. quinquefasciatus. Three different concentrations; 1x106, 1x107 and 1x108conidia/ml were made and tested. Results showed that, mortality increased as the period of exposure increased and also increased as the conidia concentration increased. The mortality recorded in lowest dose of 106 conidia/ml was 60% and 50% in M. anisopliae and Paecilomyces spp respectively, and again 80% and 70%mortality was recorded at dose of 107 conidia/ml. whereas highest dose level of 108conidia/ml caused high mortality of up to 90% and 80% respectively. The lethal concentration causing 50% mortality (LC50) of 4th instars larvae of C. quinquefasciatus was also varied according to concentration of spores and duration of exposure. The result showed that LC50 values of M. anisopliae isolate were 3.8×108, 2.5 x 106, 2.0 x 105 and 1.7x107conidia/ml after 24, 48, 72 and 96 Hours exposure respectively. Similarly, LC50 values Paecilomyces Spp isolate were 5.3×108, 3.8 x 107, 2.0 x 106 and 2.3 x 107conidia/ml after 24, 48, 72 and 96 Hours exposure respectively. the These results indicated that M. anisopliae and Paecilomyces Spp isolated is pathogenic to immature stage of C. quinquefasciatu and could be suggested for development as a biological control for mosquitos’ management.
Surgery guided with intraoperative electrocorticography in patients with low-grade glioma and refractory seizures
Authors: Yao Pei-Sen , Zheng Shu-Fa , Wang Feng , Kang De-Zhi , Lin Yuan-Xiang
Published: April 2017

OBJECTIVE

Using intraoperative electrocorticography (ECoG) to identify epileptogenic areas and improve postoperative seizure control in patients with low-grade gliomas (LGGs) remains inconclusive. In this study the authors retrospectively report on a surgery strategy that is based on intraoperative ECoG monitoring.

METHODS

A total of 108 patients with LGGs presenting at the onset of refractory seizures were included. Patients were divided into 2 groups. In Group I, all patients underwent gross-total resection (GTR) combined with resection of epilepsy areas guided by intraoperative ECoG, while patients in Group II underwent only GTR. Tumor location, tumor side, tumor size, seizure-onset features, seizure frequency, seizure duration, preoperative antiepileptic drug therapy, intraoperative electrophysiological monitoring, postoperative Engel class, and histological tumor type were compared between the 2 groups.

RESULTS

Univariate analysis demonstrated that tumor location and intraoperative ECoG monitoring correlated with seizure control. There were 30 temporal lobe tumors, 22 frontal lobe tumors, and 2 parietal lobe tumors in Group I, with 18, 24, and 12 tumors in those same lobes, respectively, in Group II (p < 0.05). In Group I, 74.07% of patients were completely seizure free (Engel Class I), while 38.89% in Group II (p < 0.05). In Group I, 96.30% of the patients achieved satisfactory postoperative seizure control (Engel Class I or II), compared with 77.78% in Group II (p < 0.05). Intraoperative ECoG monitoring indicated that in patients with temporal lobe tumors, most of the epileptic discharges (86.7%) were detected at the anterior part of the temporal lobe. In these patients with epilepsy discharges located at the anterior part of the temporal lobe, satisfactory postoperative seizure control (93.3%) was achieved after resection of the tumor and the anterior part of the temporal lobe.

CONCLUSIONS

Intraoperative ECoG monitoring provided the exact location of epileptogenic areas and significantly improved postoperative seizure control of LGGs. In patients with temporal lobe LGGs, resection of the anterior temporal lobe with epileptic discharges was sufficient to control seizures.
Is staged bilateral thalamic radiosurgery an option for otherwise surgically ineligible patients with medically refractory bilateral tremor?
Authors: Niranjan Ajay , Raju Sudesh S. , Monaco Edward A. , Flickinger John C. , Lunsford L. Dade
Published: April 2017

OBJECTIVE

Unilateral Gamma Knife thalamotomy (GKT) is a well-established treatment for patients with medically refractory tremor who are not eligible for invasive procedures due to increased risk of compications. The purpose of this study was to evaluate whether staged bilateral GKT provides benefit with acceptable risk to patients suffering from disabling medically refractory bilateral tremor.

METHODS

Eleven patients underwent staged bilateral GKT during a 17-year period (1999–2016). Eight patients had essential tremor (ET), 2 had Parkinson's disease (PD)–related tremor, and 1 had multiple-sclerosis (MS)–related tremor. For the first GKT, a median maximum dose of 140 Gy was delivered to the posterior-inferior region of the nucleus ventralis intermedius (VIM) through a single isocenter with 4-mm collimators. Patients who benefitted from unilateral GKT were eligible for a contralateral GKT 1–2 years later (median 22 months). For the second GKT, a median maximum dose of 130 Gy was delivered to the opposite VIM nucleus to a single 4-mm isocenter. The Fahn-Tolosa-Marin (FTM) clinical tremor rating scale was used to score tremor, drawing, and drinking before and after each GKT. The FTM writing score was assessed only for the dominant hand before and after the first GKT. The Karnofsky Performance Status (KPS) was used to assess quality of life and activities of daily living before and after the first and second GKT.

RESULTS

The median time to last follow-up after the first GKT was 35 months (range 11–70 months). All patients had improvement in at least 1 FTM score after the first GKT. Three patients (27.3%) had tremor arrest and complete restoration of function (noted via FTM tremor, writing, drawing, and drinking scores equaling zero). No patient had tremor recurrence or diminished tremor relief after the first GKT. One patient experienced new temporary neurological deficit (contralateral lower-extremity hemiparesis) from the first GKT. The median time to last follow-up after the second GKT was 12 months (range 2–70 months). Nine patients had improvement in at least 1 FTM score after the second GKT. Two patients had tremor arrest and complete restoration of function. No patient experienced tremor recurrence or diminished tremor relief after the second GKT. No patient experienced new neurological or radiological adverse effect from the second GKT. Statistically significant improvements were noted in the KPS score following the first and second GKT.

CONCLUSIONS

Staged bilateral GKT provided effective relief for medically refractory, disabling, bilateral tremor without increased risk of neurological complications. It is an appropriate strategy for carefully selected patients with medically refractory bilateral tremor who are not eligible for deep brain stimulation.
Novel GOPC(FIG)-ROS1 fusion in a pediatric high-grade glioma survivor
Authors: Kiehna Erin N. , Arnush Maxine R. , Tamrazi Benita , Cotter Jennifer A. , Hawes Debra , Robison Nathan J. , Fong Cindy Y. , Estrine Dolores B. , Han Jennifer H. , Biegel Jaclyn A.
Published: April 2017

Pediatric high-grade glioma is a rare tumor characterized by high mortality. The authors report the first case of a high-grade glioma associated with a GOPC(FIG)-ROS1 fusion in a pediatric patient. The patient underwent gross-total resection at the age of 4 years, followed by adjuvant high-dose chemotherapy and autologous hematopoietic stem cell rescue. At 30 months after transplantation, she remains disease free.
Characterizing Rough Algebras
Authors: Umadevi Dwaraganathan
Published: April 2017

In this paper, a characterization for the class of all rough algebras from the class of all Q-rough algebras is obtained.
Neuropsychological Subgroups in Non-Demented Parkinson’s Disease: A Latent Class Analysis
Authors: Brennan Laura , Devlin Kathryn M. , Xie Sharon X. , Mechanic-Hamilton Dawn , Tran Baochan , Hurtig Howard H. , Chen-Plotkin Alice , Chahine Lama M. , Morley James F. , Duda John E. , Roalf David R. , Dahodwala Nabila , Rick Jacqueline , Trojanowski John Q. , Moberg Paul J. , Weintraub Daniel
Published: April 2017

Background: Methods to detect early cognitive decline and account for heterogeneity of deficits in Parkinson’s disease (PD) are needed. Quantitative methods such as latent class analysis (LCA) offer an objective approach to delineate discrete phenotypes of impairment.

Objective: To identify discrete neurocognitive phenotypes in PD patients without dementia.

Methods: LCA was applied to a battery of 8 neuropsychological measures to identify cognitive subtypes in a cohort of 199 non-demented PD patients. Two measures were analyzed from each of four domains: executive functioning, memory, visuospatial abilities, and language. Additional analyses compared groups on clinical characteristics and cognitive diagnosis.

Results: LCA identified 3 distinct groups of PD patients: an intact cognition group (54.8%), an amnestic group (32.2%), and a mixed impairment group with dysexecutive, visuospatial and lexical retrieval deficits (13.1%). The two impairment groups had significantly lower instrumental activities of daily living ratings and greater motor symptoms than the intact group. Of those diagnosed as cognitively normal according to MDS criteria, LCA classified 23.2% patients as amnestic and 9.9% as mixed cognitive impairment.

Conclusions: Non-demented PD patients exhibit distinct neuropsychological profiles. One-third of patients with LCA-determined impairment were diagnosed as cognitively intact by expert consensus, indicating that classification using a statistical algorithm may improve detection of initial and subtle cognitive decline. This study also demonstrates that memory impairment is common in non-demented PD even when cognitive impairment is not clinically apparent. This study has implications for predicting eventual emergence of significant cognitive decline, and treatment trials for cognitive dysfunction in PD.
Variability in fecal egg count of Haemonchus contortus infection to native goat breeds of China and Bangladesh under natural grazing condition
Authors: Omar AI , Alam MBB , Faruque MO , Mondal MM , Raihan MS , Adetula AA , Wu Z , Bhuiyan AA , Soudy F , Cao J , Zhao S , Du X
Published: April 2017

Haemonchus contortus is a major gastrointestinal nematode affecting goat in China and Bangladesh like many countries in the world. The aim of this study was to evaluate the susceptibility of Haemonchus contortus infection in different goat breeds/populations in China and Bangladesh under the natural grazing condition.  Fecal Egg of Haemonchus contortus was counted from 430 goats in both countries using McMasters technique. Body weight, Pack Cell Volume and Hemoglobin value were measured for Bangladeshi goats. Statistical analysis was done after transforming data into log10 (n+1), where n is the number of egg per gram feces and analysis of variance was done by using Generalized Linear Model procedures of computer package of SAS. Prevalence of parasite and Fecal Egg Count varied significantly (P<0.01) in all six goat populations. The highest prevalence (88.89%) of Haemonchus contortus infection was found in Enshi Black and the highest parasitic load (527.74 ±78.13 epg) was found in Chinese hybrid goat population. Most of the individuals, except Chinese hybrid goats, had Fecal Egg Count less than 300 epg. Fecal Egg Count between sexes within breed of goat did not differ significantly (P>0.05). Black Bengal goat in the hilly region of Bangladesh was the least susceptible to Haemonchus contortus infection in term of Fecal Egg Count. Our study suggests that Chinese goat breeds were more susceptible to Haemonchus contortus infection as compared to Black Bengal goat of Bangladesh under natural grazing condition. Further studies on immune-genetics aspects of goats might be helpful to find out the actual causes of such differences and to develop disease resistant breed of goat.Progressive Agriculture 27 (4): 473-481, 2016