|
|
|
|
|
Harley Silva, Sibelle Diniz, Vanessa Ferreira
Pág. 61
Embora a expansão do mercado trabalho formal seja uma tendência sustentada no Brasil nos últimos anos, a persistência de formas de ocupação ligadas ao circuito inferior da economia é uma realidade ampla e mal compreendida. Isso é particularmente verdade ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Javier Bedmar, Jorge de la Pezuela, Ainhoa Riquelme, Belén Torres and Joaquín Rams
The presence of defects like porosity and lack of fusion can negatively affect the properties of the materials manufactured by Selective Laser Melting (SLM). The optimization of the manufacturing conditions allows reducing the number of defects, but ther...
ver más
|
|
|
|
|
|
|
|
|
|
|
Liang Huang, Chao Wu, Dao Zhou and Frede Blaabjerg
Continuously expanding deployments of distributed power generation systems are transforming conventional centralized power grids into mixed distributed electrical networks. The higher penetration and longer distance from the renewable energy source to th...
ver más
|
|
|
|
|
|
|
|
|
|
|
Rupert Gouws, Heino van Jaarsveldt
In this paper, the authors present the impact of thermoelectric cooling modules (TECMs) on the efficiency of a single-phase asynchronous machine. TECMs are used to lower the stator winding temperature and core temperature of the single-phase asynchronous...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mahdieh Kazemimoghadam and Nicholas P. Fey
Fundamental knowledge in activity recognition of individuals with motor disorders such as Parkinson?s disease (PD) has been primarily limited to detection of steady-state/static tasks (e.g., sitting, standing, walking). To date, identification of non-ste...
ver más
|
|
|
|
|
|
|
|
|
|
|
Van-Vinh Nguyen, Ho-Ik Son, Thai-Thanh Nguyen, Hak-Man Kim and Chan-Ki Kim
The use of high voltage direct current (HVDC) circuit breakers (CBs) with the capabilities of bidirectional fault interruption, reclosing, and rebreaking can improve the reliable and safe operation of HVDC grids. Although several topologies of CBs have b...
ver más
|
|
|
|
|
|
|
|
|
|
|
Huanxin Zhang, Xiaoxin Zhang, Jinhua Wang, Cong Huang, Jiawei Li, Weiguo Zong, Guohong Shen, Shenyi Zhang, Yong Yang and Pengfei Zhang
This article introduces the instrument design of the medium energy proton detector (energy range: 30 keV?5 MeV) mounted on the FY-3E satellite. Through the design and optimization of the sensor signal processing circuit, the anti-electromagnetic interfer...
ver más
|
|
|
|
|
|
|
|
|
|
|
Klaus Röbenack and Stefan Palis
The classical buck converter is a very common DC?DC converter, which reduces an higher input supply voltage to a lower output load voltage. Replacing the inductor and the capacitor by a transmission line, we obtain a distributed buck converter, which can...
ver más
|
|
|
|
|
|
|
|
|
|
|
Marcello De Matteis, Federico Fary, Elia A. Vallicelli and Andrea Baschirotto
This paper presents a fourth-order continuous-time analog filter based on the cascade of two flipped-source-follower (FSF) biquadratic (biquad) cells. The FSF biquad adopts two interacting loops (the first due to the classic source-follower, and the seco...
ver más
|
|
|
|
|
|
|
|
|
|
|
Luana Mazzarella, Anna B. Morales-Vilches, Lars Korte, Rutger Schlatmann and Bernd Stannowski
Doped hydrogenated nanocrystalline (nc-Si:H) and silicon oxide (nc-SiOx:H) materials grown by plasma-enhanced chemical vapor deposition have favourable optoelectronic properties originated from their two-phase structure. This unique combination of qualit...
ver más
|
|
|
|
|
|
|
|
|
|
|
Dalal Fadil, Vikram Passi, Wei Wei, Soukaina Ben Salk, Di Zhou, Wlodek Strupinski, Max C. Lemme, Thomas Zimmer, Emiliano Pallecchi, Henri Happy and Sebastien Fregonese
This paper presents the first graphene radiofrequency (RF) monolithic integrated balun circuit. It is composed of four integrated graphene field effect transistors (GFETs). This innovative active balun concept takes advantage of the GFET ambipolar behavi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ngalula Sandrine Mubenga, Zachary Linkous and Thomas Stuart
Due to variations among the cells, large lithium ion batteries (LIB) such as those in battery energy storage stations (BESS) and electric vehicles (EVs) must have an equalizer (EQU) circuit to balance the cell voltages. In spite of their significant loss...
ver más
|
|
|
|
|
|
|
|
|
|
|
Lucia V. Mercaldo, Iurie Usatii and Paola Delli Veneri
The conversion efficiency of thin-film silicon solar cells needs to be improved to be competitive with respect to other technologies. For a more efficient use of light across the solar spectrum, multi-junction architectures are being considered. Light-ma...
ver más
|
|
|
|
|
|
|
|
|
|
|
Sheng-Yu Tseng and Hung-Yuan Wang
This paper presents a power system using a high step-up converter for dc load applications. The high step-up converter adopts a boost converter with interleaved mode and a coupled inductor to raise its powering ability and increase its step-up voltage ra...
ver más
|
|
|
|
|
|
|
|
|
|
|
Zhengbao Li, Jianfeng Dai, Yuanxin Luan, Nan Sun and Libin Du
Human marine activities are becoming increasingly frequent. The adverse marine environment has led to an increase in man overboard incidents, resulting in significant losses of life and property. After a drowning accident, the accurate location informati...
ver más
|
|
|
|
|
|
|
|
|
|
|
Hikaru Makino and Toru Tanzawa
This paper is an extended version of a previously reported conference paper regarding a low-power design for NAND Flash. As the number of bits per NAND Flash die increases with cost scaling, the IO data path speed increases to minimize the page access ti...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yunfeng Hu, Bin Tang, Chaoyi Chen, Lexing Hu, Qingming Huang, Jiaqi Cai, Jinbo Xie, Bin Li and Zhaohui Wu
In recent years, due to the rise of the Internet of Things (IoT), various sensors have come to be in great demand for IoT devices. Analog-to-digital converters (ADCs) act as an important part of receivers in sensors. To improve the uptime of IoT devices,...
ver más
|
|
|
|
|
|
|
|
|
|
|
Lu Sun, Shuguo Gao, Tianran Li, Jiaxin Yao, Ping Wang and Jianhao Zhu
The instability of the winding-cushion structure is one of the primary causes of transformer failures. Insulation cushion compression and offset are the predominant forms leading to structural instability. Therefore, this paper, using the SFSZ7-31500/110...
ver más
|
|
|
|
|
|
|
|
|
|
|
You-Jin Jeong, Suchit Kumar, Seon-Woo Park, Youngkyu Song, Jee-Hyun Cho, Chan Hong Moon and Chang-Hyun Oh
This study presents the feasibility of a dual-mode high-pass birdcage RF coil to acquire MR images at both 1H and 23Na frequencies at ultra-high-field MR scanner, 7 T. A dual-mode circuit (DMC) in the dual-mode birdcage (DMBC) RF coil operates at two fre...
ver más
|
|
|
|
|
|
|
|
|
|
|
Lina E. Dominici, Kathleen E. Duncan, Mark A. Nanny, Irene A. Davidova, Brian H. Harriman and Joseph M. Suflita
The biocorrosion of carbon steel poses a risk for ships combining seawater and fuel in metal ballast tanks. Ballast tanks were simulated by duplicate reactors containing carbon steel coupons and either petroleum F76 (petro-F76), Fischer?Tropsch F76 (FT-F...
ver más
|
|
|
|
|
|