bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bending and SAR analysis on UWB wearable MIMO antenna for on-arm WBAN applications
Authors: Jayant Shailesh , Srivastava Garima , Purwar Ravindra 
Published: March 2021

Abstract
Here, a planar Ultra-Wideband (UWB) wearable Multiple Input Multiple Output (MIMO) antenna is designed for on-arm wearable Wireless Body Area Network (WBAN) applications. This antenna is designed on a 100% cotton cloth substrate. The two-port MIMO antenna has a dual spinning wheel shape like radiators with the partial ground and microstrip feedings. The two partial grounds are connected to a rectangular strip to have common ground. The complete surface area of the antenna is 40 ×  70 mm2. In comparison with recently published papers in the same research area, the bending and SAR analysis are also done to estimate the performance of this wearable antenna, which is the novelty of this research work. For entire UWB bandwidth, S–parameters, gain, efficiency, and diversity parameters (Channel Capacity Loss [CCL] and Envelope Correlation Coefficient [ECC]) and far-field simulations are done for all cases such as flat, bend, on body antenna, which demonstrates the appropriateness of the presented antenna to be operated to the human arm.
Fracture toughness assessment at different regions in an inertial friction welded Ti-5Al-2Sn-2Zr-4Mo-4Cr alloy plate
Authors: Ji Yingping , Wu Sujun 
Published: March 2021

Abstract
The study aims to ascertain the influences of position on fracture toughness and fracture mechanism of inertial friction welded Ti-5Al-2Sn-2Zr-4Mo-4Cr joints. The room-temperature fracture toughness values of the parent material and three other regions in the weld were evaluated by standard crack tip opening displacement tests. The micro-structure and tensile properties of the welds were also investigated. Based on the observation of fracture surface and crack propagation path, a schematic illustration of the crack propagation was formed. The results suggest that the weld metal had the worst fracture toughness. The individual fracture toughness of different regions in the weld could be explained by the various modes of crack propagation, which were affected by different microstructures.
Modeling and fault identification of the gear tooth surface wear failure system
Authors: Wang Jingyue , Wang Haotian , Guo Lixin , Yang Diange 
Published: March 2021

Abstract
In order to detect the gear tooth surface wear fault, this paper presents a new fault diagnosis method based on Symlets wavelet family multi-structure element difference morphological denoising and frequency slice wavelet transform (FSWT). Besides considering the gear backlash, time-varying mesh stiffness, gear error and bearing longitudinal response, and low frequency excitation caused by the torque fluctuation, random disturbance of damping gear ratio, gear backlash, excitation frequency, and meshing stiffness are also considered. Dynamics equations of a three degrees of freedom spur gear transmission system with tooth surface wear fault are established according to Newton’s laws. The 4–5 order variable step Runge–Kutta method has been used for solving the equations to get the vibration signal of the system. Then, the proposed method is applied to extract the wear fault signal, which verifies the feasibility and effectiveness of the proposed method.
Charming Snakes (and Kings), from Egypt to Persia
Authors: Clancier Philippe , Agut Damien 
Published: March 2021

AbstractThe war between Assyria and Egypt resulted in the deportation of scholars from the Nile Valley to Mesopotamia. Among them were the so-called “snake charmers.” While it was a well-known profession in Egypt, this was not the case in Assyria or Babylonia, where the treatment of snakebites and scorpion stings was left to exorcist doctors. A number of clues from the late Neo-Assyrian and Achaemenid Persian periods suggest that the “snake charmers” from Egypt enjoyed success with the kings of the great empires in the Middle East. Their presence most likely resulted from the professional structure and visibility of the Egyptian “snake charmers,” which were relatively absent in Mesopotamia.
“An Especially Thankless Work”? Filtering Practices in Emergency Shelters and Ethical Dilemmas for Street-level Social Workers in Western Switzerland
Authors: Bertho Béatrice , Martin Hélène 
Published: March 2021

Abstract
Based on an ethnographic survey conducted in services for the homeless in French-speaking Switzerland, this paper examines street-level social workers’ struggles between the implementation of official policies and their direct work with people. Beyond their common condition of homelessness, people looking for shelter are a very heterogeneous group: undocumented migrants and foreign workers rub shoulders with poor, local pensioners, or with persons suffering from drug addiction or mental illness. Guided by national and international residence and labour legislation, local authorities and institutions have their own policies – more or less strict in their exclusion of poor migrants – regarding the legitimate beneficiaries of a place in the emergency accommodation system. In this article, we analyse the encounters of street-level social workers with homeless people and examine the practical, value-based and ethical dilemmas they face, as well the use of their discretionary power in making more - or less - appropriate shelter available for destitute migrants.
Muscle Architecture and Maturation Influence Sprint and Jump Ability in Young Boys: A Multistudy Approach
Authors: Radnor John M. , Oliver Jon L. , Waugh Charlie M. , Myer Gregory D. , Lloyd Rhodri S. 
Published: March 2021

Abstract
Radnor, JM, Oliver, JL, Waugh, CM, Myer, GD, and Lloyd, RS. Muscle Architecture and Maturation Influence Sprint and Jump Ability in Young Boys: A Multistudy Approach. J Strength Cond Res 36(10): 2741–2751, 2022—This series of experiments examined the influence of medial gastrocnemius (GM) and vastus lateralis (VL) muscle architecture (muscle thickness, pennation angle, and fascicle length) on sprint and jump performance in pre–, circa–, and post–peak height velocity (PHV) boys. In experiment 1, 1-way analysis of variance and Cohen's d effect sizes demonstrated that most muscle architecture measures were significantly greater in post-PHV compared with pre-PHV boys (d = 0.77–1.41; p < 0.05). For most sprint and jump variables, there were small to moderate differences between pre-PHV to circa-PHV and circa-PHV to post-PHV groups (d = 0.58–0.93; p < 0.05) and moderate to large differences between pre-PHV and post-PHV groups (d = 1.01–1.47; p < 0.05). Pearson's correlation analyses in experiment 2 determined that muscle architecture had small to moderate correlations with sprint and jump performance (r = 0.228–0.707, p < 0.05), with strongest associations within the post-PHV cohort. Chi-squared analyses in experiment 3 identified that, over 18 months, more POST-POST responders than expected made positive changes in GM and VL muscle thickness. Significantly more PRE-POST subjects than expected displayed changes in maximal sprint speed, while significantly more POST-POST individuals than expected showed positive changes in jump height. Muscle architecture seems to be larger in more mature boys compared with their less mature peers and likely underlies their greater performance in sprinting and jumping tasks. Boys experiencing, or having experienced, PHV make the largest increases in muscle architecture and sprinting and jumping performance when tracked over 18 months.
“Pequenos gatunos, vadios, vagabundos, delinquentes...” Menores à margem da lei em Salvador Primeira República (1889-1920)
Authors: De Souza Osnan Silva 
Published: March 2021

A pretensão é, através deste artigo, pesquisar, problematizar e apresentar quem eram os chamados menores delinquentes, abandonados, vagabundos, gatunos etc. O que eles faziam para serem alvos das prisões policiais, reclamações, apelos, discussões e das propostas políticas e sociais na imprensa e nos meios parlamentares, e como esses menores reagiam às tentativas de controle social: são algumas das questões históricas que estão a ser refletidas neste trabalho. Para tanto foi necessário um diálogo com muitas fontes: reportagens, queixas, reclamações, propostas políticas, discursos religiosos, depoimentos, dentre outras coisas que encontramos nos jornais e periódicos da época. Foi imprescindível também incluir nesta conversação os estudiosos, tanto aqueles que trabalham com a Bahia como os que pensam outras regiões do Brasil.Palavras Chaves: Menores; Primeira República; Salvador. AbstractThis paper has the intention to research, problematize and present who were the so-called juvenile delinquents, abandoned, vagabonds, sneakers etc. What they did to be targets of police arrests, complaints, appeals, discussions and political and social proposals in the press and parliamentary media, and how these minors responded to attempts at social control: these are some of the historical issues that are being reflected upon. This required a dialogue with many sources: reports, complaints, political proposals, religious speeches, testimonials, among other materials found in the newspapers and publications of the time. The scholars were essential pieces to be included in our discussion, both those who work with Bahia issues and those who think other regions of Brasil.Keywords: Minors; First Republic; Savior.
A História a partir da subalterna: Breve debate bibliográfico entre os Estudos Pós-Coloniais e de Gênero.
Authors: Schneider Nicole Angélica 
Published: March 2021

Diante de uma historiografia que parecia engessada em conceitos generalizadores, pesquisadoras de núcleos de estudos e disciplinas nas universidades, a partir de 1960, unem-se para responder a uma demanda das ruas: onde estão as mulheres na História e motivo pelo qual suas histórias não foram contadas. Juntamente com um movimento social, surge um movimento acadêmico de construir uma epistemologia para compreender estes sujeitos ausentes até aquele momento: os Estudos de Gênero. Muitos debates foram se constituindo neste campo, forçando uma oxigenação em outros. Os estudos pós-coloniais construídos para compreender as consequências sistemáticas da relação colonizado-colonizador contribui com o debate de gênero. Neste artigo farei um breve debate bibliográfico sobre esta abordagem interdisciplinar e interseccional para os Estudos de Gênero.Palavras-chave: Estudos de Gênero; Estudos pós-coloniais; Interseccionalidade. AbstractIn the face of a historiography that seemed to be plastered in generalizing concepts, researchers of study centers and disciplines in universities, from 1960 on, came together to respond to a demand from the streets: where the women are in history and why their stories were not told. Together with a social movement, an academic movement emerged to build an epistemology to understand these subjects absent until that moment: the Studies of Gender. Many debates have arisen in this field, forcing an oxygenation in others. Postcolonial studies built to understand the systematic consequences of the colonize-colonizer relationship contribute to the gender debate. In this paper I will make a brief bibliographic debate on this interdisciplinary and intersectional approach to Gender Studies.Keywords: Gender Studies; Postcolonial Studies; Intersectionality.
Eficiência das ferrovias especializadas em transporte de minério de ferro e pelotas
Authors: Fontan Renata , Rosa Rodrigo , Lacruz Adonai 
Published: March 2021

Objetivo: Objetiva-se comparar a eficiência relativa das ferrovias especializadas em transporte de minério de ferro (MFe) e pelota (PLMFe), que fazem parte do patrimônio das empresas de mineração e usinas de pelotização considerando o cenário de 2016.
Métodos: Foi utilizada a técnica Análise Envoltória de Dados (DEA), com aplicação do modelo de retornos constantes de escala (CCR) e orientação a saída (output); o método multicritério combinatório inicial para escolha das variáveis de entrada e a regressão Tobit como estratégia de validação do modelo DEA.
Resultados: Das doze ferrovias avaliadas, três ferrovias foram identificadas como eficientes: Estrada de Ferro Carajás, Fortescue e Mount Newman.
Conclusões: O modelo aplicado foi considerado como um bom método para avaliar a eficiência das ferrovias especializadas em transporte de MFe e PLMFe, pois determinou a eficiência de cada ferrovia, sugerindo o aumento necessário na variável de saída ou ajustes nas variáveis de entrada para que as ferrovias atinjam a fronteira de eficiência. Com isso, as empresas podem utilizar os resultados deste estudo para guiar melhorias futuras para tornar sua ferrovia mais eficiente ou se manter na fronteira de eficiência.
Estudio comparativo in vitro de la efectividad del sistema HBW Ultrasonic Ring y la irrigación ultrasónica pasiva en la remoción de barrillo dentinario colocado artificialmente en irregularidades simuladas dentro de conductos radiculares instrumentados, a
Authors: Monar JCristina 
Published: March 2021

Comparar la efectividad de la irrigación ultrasónica dual del Anillo HBW (HBW, México) y la irrigación ultrasónica pasiva de IrriS (VDW Dental, Munich Germany) en la remoción de barrillo dentinario colocados artificialmente en irregularidades simuladas dentro de conductos radiculares instrumentados. El estudio se realizó en 25 premolares uniradiculares extraídos. Se instrumentaron los conductos con técnica reciprocante Reciproc Blue (VDW Dental, Munich Germany). Cada diente se dividió longitudinalmente en dos mitades. En una de las mitades de cada conducto se creó un surco de 4 mm de largo, 0,2 mm de ancho y 0,5 mm de profundidad, se rellenó el surco con barrillo dentinario preparado intencionalmente mezclando restos de dentina con NaOCl al 5,25%. Se volvió a ensamblar cada diente y se los distribuyó en 3 grupos de manera aleatoria: Grupo 1: irrigación ultrasónica pasiva PUI (n = 10), grupo 2 irrigación ultrasónica dual DUI (n = 10) en los cuales se irrigó 9 ml de NaOCl al 5,25% y se activó por 60s distribuidos en tres tiempos de 3ml/20s cada uno y grupo control (n = 5) en el cual no se realizó irrigación. Se separaron las raíces y se obtuvieron imágenes del surco, utilizando una cámara Nikon d3300 (Nikon,Tokio, Japan) luego de lo cual se guardaron como imágenes JPG. La cantidad de restos de barrillo dentinario en los surcos fue evaluada por tres expertos utilizando un sistema de puntuación de 0 a 3: cuanto mayor fue la puntuación, más barrillo dentinario fue observado en el surco. Los datos se analizaron mediante la prueba de Shapiro-Wilks y U de Mann-Whitney. La efectividad en la remoción de barrillo dentinario de cada sistema se comparó en 3 categorías de acuerdo a los puntajes obtenidos: puntaje de 0 a 1 Excelente; puntaje 2 Regular y puntaje 3 Mala. Una excelente remoción del barrillo dentinario se observó en el 60% y 70% en los sistemas DUI y PUI respectivamente, mientras que una remoción regular del 40% y 30% respectivamente. sin embargo, no hubo diferencias estadísticamente significativas mediante la prueba U de Mann-Whitney (P>0.05). La irrigación ultrasónica dual fue igual de efectiva que la irrigación ultrasónica pasiva en la remoción de barrillo dentinario.
Analisis Butir Soal Ulangan Harian IPA Terpadu Kelas VII SMP 05 Kota Bengkulu Tahun Pelajaran 2020/2021
Authors: Virginia Sagita , Angraini Widiya , Pratesya Wika , Walid Ahmad 
Published: March 2021

Tujuan penelitian ini adalah untuk memahami serta mengetahui pengelompokan Ranah Kognitif Taksonomi Bloom dan Tingkat Kesukaran Ulangan Harian IPA Kelas VII SMPN 05 Kota Bengkulu. Dalam penelitian ini tentunya menggunakan metode penelitian yaitu metode Deskriptif Kualitatif .pada penelitian ini instrument yang digunakan berupa soal Ulangan Harian Mata Pelajaran IPA Tahun Ajaran 2020/2021. Dari data yang terkumpul kemudian data tersebut di analisis Ranah Kognitif berdasarkan Taksonomi Bloom dari tabel masing-masing telah dikelompokkan kedalam tiga tingkat kognitif dari 6 tingkat kognitif yang ada. Hasil penelitian ini adalah, dari tabel tersebut dihasilkan pada Ulangan Harian mata pelajaran IPA SMPN 05 Kota Bengkulu berturut-turut adalah : C1 : 32 %, C2 : 40 %, C3 : 28 %. Dari analisis tingkat kesukaran butis soal Ulangan Harian IPA Kelas VII SMPN 05 memiliki kategori soal mudah 44% sedangkan katogori soal sedang 36 % dan kategori soal susah 20 %. Hal ini menandakan bahwasannya kualitas soal Ulangan Harian cukup baik.
Pendidikan Mitigasi Bencana Kebakaran Pada Masyarakat Desa Belimbing Baru Kecamatan Sungai Pinang Kabupaten Banjar
Authors: Azkia Laila , Azizah Maulida , Hikmah Nor , Damayanti Yoland , Putra Sukma Adi 
Published: March 2021

Penting bagi masyarakat untuk mengetahui, memahami serta dapat mengaplikasikannya tentang pengetahuan mitigasi bencana kebakaran yang disosialisasikan kepada masyarakat desa Belimbing Baru. Mengingat lokasi desa Belimbing Baru yang sangat jauh dari lokasi perkotaan yang penuh dengan perbukitan serta masih banyak pohon-pohon, sehingga kalau terjadi bencana kebakaran maka masyarakat tentu akan mengalami kesulitan yang sangat besar karena desa Belimbing Baru juga belum mempunyai fasilitas mobil pemadam kebakaran. Sehingga menjadi sangat penting sosialisasi mitigasi bencana kebakaran ini bagi warga desa Belimbing Baru, agar dapat mencegah penyebab-penyebab kebakaran secara dini, termasuk ketika terjadi bencana kebakaran bagaimana warga sudah mengetahui dan memahami tindakan apa yang harus dilakukan agar bisa selamat dan berhasil memadamkan api tersebut. Dengan adanya sosialisasi ini serta dengan penempelan poster-poster mitigasi bencana dibeberapa titik rumah warga seperti warung, dan bengkel. Maka harapannya akan semakin banyak warga yang bisa melihat dan membaca materi mitigasi bencana yang ada diposter tersebut sehingga dapat memaham serta mampu mencegah terjadinya bencana kebarakan dan mampu mengelola keadaan ketika memang benar-benar terjadi bencana kebakaran.
Rancang Bangun Pembuat Layout PCB Otomatis Berbasis Android
Authors: Anggi Hermawan  , Aris Sunawar  , Nur Hanifah Y  
Published: March 2021

ABSTRACT
The purpose of this research is to produce an Android-based automatic PCB layout path maker tool. This tool can automatically create a PCB layout path without etching the PCB so that it can provide efficiency in making the PCB layout path.
The research method used in this study used an experimental method with a quantitative approach. This research was conducted at the Jakarta State University Jakarta mechanical workshop laboratory in January 2020, testing carried out namely manual and automatic testing, manual testing including the making of lines and flat shapes using paper media and PCB boards, automatic testing includes making pcb lines automatically using media PCB board.
The conclusion of this research is that the PCB Layout path making tool can automatically work as planned. The tool can make the PCB Layout path according to the design that is sent via Bluetooth communication serial. Automatic PCB layout maker tool has an average error percentage of under 5%. Testing is done in 2 ways, namely manual and automatic testing, in manual testing the average error is 0.297% and the automatic error testing is 0.136%.
ABSTRAK
Tujuan penelitian ini adalah menghasilkan alat pembuat jalur layout PCB otomatis berbasis android. Alat ini dapat membuat jalur layout PCB secara otomatis tanpa harus meng-etching PCB sehingga dapat memberikan efisiensi pada pembuatan jalur layout PCB.
Metode penelitian yang digunakan dalam penelitian ini menggunakan metode eksperimen dengan pendekatan kuantitatif. Penelitian ini dilakukan di laboratorium bengkel mekanik Universitas Negeri Jakarta pada bulan Januari 2020, pengujian yang dilakukan yaitu pengujian secara manual dan otomatis, pengujian manual meliputi pembuatan garis dan bangun datar menggunakan media kertas dan papan PCB, pengujian otomatis meliputi pembuatan jalur pcb secara otomatis menggunakan media papan PCB.
Kesimpulan dari penelitian ini adalah alat pembuat jalur Layout PCB secara otomatis dapat bekerja sesuai dengan yang di rencanakan. Alat dapat membuat jalur Layout PCB sesuai dengan desain yang dikirimkan melalui serial komunikasi Bluetooth. Alat pembuat layout PCB otomatis memiliki persentase error rata-rata di bawah 5%. Pengujian dilakukan dengan 2 cara yaitu pengujian manual dan otomatis, pada pengujian manual rata-rata error didapatkan sebesar 0,297% dan pengujian otomatis rata-rata error didapatkan sebesar 0.136%.
A focused simulation-based optimization of print time and material usage with respect to orientation, layer height and support settings for multi-pathological anatomical models in inverted vat photopolymerization 3D printing
Authors: Ravi Prashanth , Chen Victoria C. P. 
Published: March 2021

Abstract
Background: 3D printing of anatomical models requires multi-factorial decision making for optimal model manufacturing. Due to the complex nature of the printing process, there are frequently multiple potentialities based on the desired end goal. The task of identifying the most optimal combination of print control variables is inherently subjective and rests on sound operator intuition. This study investigates the effect of orientation, layer and support settings on print time and material usage. This study also presents a quantitative optimization framework to jointly optimize print time and material usage as a function of those settings for multi-pathological anatomical models.Methods: Seven anatomical models representing different anatomical regions (cardiovascular, abdominal, neurological and maxillofacial) were selected for this study. A reference cube was also included in the simulations. Using PreForm print preparation software the print time and material usage was simulated for each model across 4 orientations, 2 layer heights, 2 support densities and 2 support tip sizes. A 90 − 10 weighted optimization was performed to identify the 5 most optimal treatment combinations that resulted in the lowest print time (90% weight) and material usage (10% weight) for each model.Results: The 0.1mm layer height was uniformly the most optimal setting across all models. Layer height had the largest effect on print time. Orientation had a complex effect on both print time and material usage in certain models. The support density and the support tip size settings were found to have a relatively minor effect on both print time and material usage. Hollow models had a larger support volume fraction compared to solid models.Conclusions: The quantitative optimization framework identified the 5 most optimal treatment combinations for each model using a 90 − 10 weighting for print time and material usage. The presented optimization framework could be adapted based on the individual circumstance of each 3D printing lab and/or to potentially incorporate additional response variables of interest.