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2018 International Mechanical and Industrial engineering Conference, IMIEC 2018

作者： Damar, Vicio Rizky Hartono, Markus Postgraduate Program in Logistics and Supply Chain Engineering University of Surabaya Surabaya60293 Indonesia

Hatsune Miku is the first virtual singer who is currently achieving success, even up to the world level. Miku has a large number of fansbase, like a famous singer. Its popularity also helps Crypton Future Media, as the company maker of Miku, to collaborate, forming a supply chain partnership with several big companies, to bring Miku into real products, which fans can have. This literature review explores this literature study explores Miku's development ever since it was created, until it became famous, and gave rise to a unique supply chain partnership. Researcher using systematic literature review method, with the aim of understanding how big the impact of Supply Chain Partnership and Market Driven from the success of virtual singer Hatsune Miku to consumer behavior, both from the general public and fans. The impact of this unique supply chain partnership is to make consumers loyal and feel close. © The Authors, published by EDP Sciences, 2018.

关键词： Supply chains

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Adaptive Backstepping Control for the Longitudinal Flight of a Blended Wing Body Aircraft 19

Adaptive Backstepping Control for the Longitudinal Flight of...

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19th International Conference on Electrical engineering, Computing Science and Automatic Control, CCE 2022

作者： Contreras-Torres, G.A.S. Garcia-Rodriguez, R. Dominguez-Mayorga, C.R. Espinoza, E.S. Upmh Postgraduate Program in Aerospace Engineering Mexico UMI-LAFMIA Cinvestav Conacyt Mexico

ISBN: (数字)9781665455084

ISBN: (纸本)9781665455084

In recent years, many companies and research groups have been developing the design and control of Blended Wing Body aircraft. Although commercial flights are unavailable today, the first flight is expected in the upcoming years. The Blended Wing Body configuration incorporates many advantages in security, maneuverability, fuel economy, and internal payload, to mention a few. This paper presents the aerodynamic design and control of the Mexican Blended Wing-Body aircraft, EHEKATL. The aerodynamic coefficients are obtained using XFLR5 for a specific flight condition to guarantee static longitudinal stability. Assuming that some aerodynamics coefficients and parameters of the EHEKATL BWB are unknown, an adaptive Backstepping controller for cruise flight is proposed. Stability conditions to guarantee asymptotically convergence of tracking errors are shown. Finally, numerical simulation results, under many conditions, show the satisfactory performance of the proposed approach during cruise phase flight. © 2022 IEEE.

关键词： Aircraft control

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Effects on Cortical Rhythms Produced by Robotic Glove Assistance During Motor Imagery 1

Effects on Cortical Rhythms Produced by Robotic Glove Assist...

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1st IEEE Colombian Caribbean Conference, C3 2023

作者： Blanco-Diaz, Cristian F. Gonzalez-Cely, Aura X. Guerrero-Mendez, Cristian D. Souza, Fernanda Andrade, Diego Bastos-Filho, Teodiano F. Federal University of Espírito Santo Postgraduate Program in Electrical Engineering Vitoria Brazil

ISBN: (纸本)9798350341799

In recent years, advances in Brain-Computer Interfaces (BCIs) have gained recognition for the design of rehabilitation and/or assistance strategies for populations with neuromotor disabilities. In BCIs, the study of EEG phenomena during hand Motor Imagery (MI) tasks is still challenging. Therefore, to deepen the field, a novel protocol based on MI tasks is proposed in this study, which is compared to the classical MI protocol based on static Action Observation (AO). The proposed protocol is based on a combination of visual stimulation by AO and passive movements generated by a robotic glove. To address cortical effects, Electroencephalography (EEG) analysis was performed to examine the differences in cortical rhythms in the frequency domain. The results allow concluding that the use of the robotic glove generated a greater decrease in power (desynchronization) in the central parietal cortex of the brain, especially for electrode C3. These findings allow further neuroscience studies and will be used to deepen the analysis and detection of MI patterns towards a BCI-controlled upper limb assistance device. © 2023 IEEE.

关键词： Brain computer interface

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Hand Motor Imagery Identification Using Machine Learning Approaches in a Protocol Based on Visual Stimuli and Passive Movement 1

Hand Motor Imagery Identification Using Machine Learning App...

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1st IEEE Colombian Caribbean Conference, C3 2023

作者： Gonzalez-Cely, Aura X. Blanco-Diaz, Cristian F. Guerrero-Mendez, Cristian D. Bastos-Filho, Teodiano F. Federal University of Espírito Santo Postgraduate Program in Electrical Engineering Vitoria Brazil

ISBN: (纸本)9798350341799

In recent years, advancements in rehabilitation techniques have been made to leverage biosignals and passive movement as integral components of physical interventions to restore upper limb mobility in people with disabilities. This study introduces a novel Motor Imagery (MI) protocol based on Action Observation (AO) using static visual cues and a robotic glove used in the right hand. To address this, Machine Learning (ML) techniques were assessed using features based on Power Spectral Density (PSD) in the mu (μ, 8-13 Hz) and beta (β, 13-30 Hz) frequency bands. Four distinct classifiers were explored: Kernel Naive Bayes (NB), Quadratic Support Vector Machine (QSVM), Fine k-nearest neighbors (KNN), and Logistic Regression (LR). These classifiers were employed to discriminate between open- and closed-hand MI tasks. Based on the evaluated metrics, it was concluded that the implemented methodology is feasible for classifying MI tasks from the same limb, where the QSVM classifier showed the most promising results, with a mean accuracy of approximately 75%. Future work will focus on implementing the system to control the robotic glove in the context of post-stroke rehabilitation, underscoring its potential clinical utility. © 2023 IEEE.

关键词： Robotics

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Value stream mapping of the design process in a design-build firm 35

Value stream mapping of the design process in a design-build...

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35th International Symposium on Automation and Robotics in Construction and International AEC/FM Hackathon: The Future of Building Things, ISARC 2018

作者： Torres, L.A. Souza, M.C.S. Xavier, A.C.B. Melo, R.S.S. Postgraduate Program in Civil Engineering Federal University of Rio Grande do Norte Brazil

ISBN: (纸本)9781510869028

With a scenario of intense difficulties faced by the construction industry, improvements of the productive processes are demanded in order to make them more efficient, optimizing resources such as human, materials and financial ones, aggregating quality to the delivered product. Thus, this study aims the application of a methodology of improvement in the design process, under the lean approach, in a design-build firm, including the usage of the tool Value Stream Mapping (VSM). The VSM is initiated from the first contact with the customer to the final design and construction documents delivery. As a result, high levels of interruption and waiting for information have been detected. It has been verified a total lead time of 50 days, with only 21.28% corresponding to the effective execution time of activities. The analysis of the negotiation phase indicates a consumption of 32% of the total cycle time and in the design phase it was observed that just 30.68% of the time is utilized on activities which generate value for the customer. Besides, there is a loss of €84.93 in materials and services. With the implantation of kaizens, it is proposed to lower the total lead time in half of the initial amount. Therefore, the simple usage of lean tools contributes to reduce waste. © ISARC 2018 - 35th International Symposium on Automation and Robotics in Construction and International AEC/FM Hackathon: The Future of Building Things. All rights reserved.

关键词： Construction industry

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Development of Training Kit Basic Aerial Robotics Using RC Plane Robot for Robotics Course 4

Development of Training Kit Basic Aerial Robotics Using RC P...

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4th International Conference on Electrical, Electronics, Informatics, and Vocational Education, ICE-ELINVO 2021

作者： Aziz, F.N. Mashoedah Department of Electronics and Informatics Engineering Education Postgraduate Program Universitas Negeri Yogyakarta Indonesia

RC Plane Robot and basic aerial robotics are technologies that are widely used, so training kits are needed to learn them. This study aims to: (1) Design and build, (2) Test performance and (3) Determine the feasibility level of training kit basic aerial robotics using RC plane robot. The study used the Research and Development method with the following procedures: (1) Potential and problem, (2) Data collection, (3) Design, (4) Validation, (5) Revision and (6) Trial. The object of the research is the RC Plane Robot training kit and the practicum jobsheet. The research subjects were students of the Electronic engineering Education Study program, Faculty of engineering, Universitas Negeri Yogyakarta. The results of the research are in the form of hardware and practicum jobsheets. The hardware part consists of a robot plane, a work area (Box) and a remote control. The level of feasibility of training kits by material experts gets a percentage of 91%. By media experts get a percentage of 89.5%. By respondents (students) get a percentage of 86%. Based on these results, the training kit basic aerial robotics using RC plane robot is very feasible to be applied to the Robotics course. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Robots

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Analysis of Current Variation in a Distribution System with High Penetration of Distributed Photovoltaic Generation 16

Analysis of Current Variation in a Distribution System with ...

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16th Brazilian Power Electronics Conference, COBEP 2021

作者： Barbosa, Patrick T. Oliveira Queiroz, Luann G. Mendes, Mariana A. Batista, Oureste E. Fardin, Jussara F. Postgraduate Program in Electrical Engineering Federal University of Espirito Santo Vitória Brazil

ISBN: (纸本)9781665421294

The increase in the use of renewable sources of electric energy, with low environmental impact, has provided advances in the most diverse areas, mainly in the field of Distributed Generation (DG) that constitutes an alternative generation model to the classic centralized electricity supply system. Among the technologies that implement this model, the Distributed Photovoltaic Generation stands out to have an easy installation process, a constant cost reduction of photovoltaic panels, and to allow bigger competitiveness, when compared to other sources. However, the excessive use of this technology can cause damage to distribution networks, impacting, for example, the electric current levels of the system. This paper shows an evaluation of current variability in a distribution network based on the IEEE 13 Node Test Feeder system through a simplified model of photovoltaic generators. The demand for the system loads and the power levels provided by the generators were varied according to load curve data and specific weather conditions. The results found show that the DG can directly impact on the levels of electric current of the feeder, where maximum variations of 94.08% and 90.66% were obtained for each of the two cities analyzed. © 2021 IEEE.

关键词： Distributed power generation

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The advantage of blown fiber technology for out site plan network deployment than conventional cabled optical fiber system in Depok apartment project 4

The advantage of blown fiber technology for out site plan ne...

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4th International Seminar on Sensors, Instrumentation, Measurement and Metrology, ISSIMM 2019

作者： Priyo Hutomo, Sri Wibisono, Gunawan Postgraduate Program of Telecommunication Management Indonesia Department of Electrical Engineering Universitas Indonesia Indonesia

The current deployment of optical fiber networks in several major cities in Indonesia is intensive. Development of fiber as the backbone or last mile for special services and almost all of us have encountered. Maybe one of them is a network deployment studio in one of the Apartment Projects in Depok City. The population of Depok reaches 4% per year higher than the national growth, the number of students and students who reach more than 80 thousand who live in Depok from only 2 campuses namely the University of Indonesia and Gunadarma University make the residential business growth both in the form of residential horizontal (boarding rooms) ) or vertical residential (Apartment). Developers are competing to build Apartments which, of course, are potential new revenue and new markets for Internet & Pay-TV Providers. The problem of the length of time the deployment of network infrastructure, traffic is not taken into account and still prioritizes the quality and cost that remains efficient become an issue of concern to the Provider. Blown Fiber is a new technology with four main components namely products, blowing devices, optical fiber bundles, and terminating/connecting hardware. This technology results in more cost-efficient, more flexible designs, better work costs in installation, termination and cheaper testing compared to conventional optical fiber deployment technology. The implementation of Blown Fiber in a deploying studio in one of the Apartments in Depok specifically on the Out Site Plan (OSP) turned out to provide convenience and acceleration in terms of network deployment. © Published under licence by IOP Publishing Ltd.

关键词： Population statistics

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Hybrid grated pixel cluster for local light angle and intensity detection 2

Hybrid grated pixel cluster for local light angle and intens...

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2nd International Symposium on Instrumentation Systems, Circuits and Transducers, INSCIT 2017

作者： Carvalho, Francelino Freitas Souza, Alexandre Kennedy Pinto Cruz, Carlos Augusto De M. PPGEE-Postgraduate Program of Electrics Engineering Federal University of Amazonas Manaus AM Brazil

ISBN: (纸本)9781538620212

Detecting local light incident angle is a desirable feature for CMOS image sensors for 3D image reconstruction purpose. Advances in the CMOS technologies in the lasts years have enabled integrated solutions to perform such a job. However, it is still not viable to implement such a feature in regular CMOS image sensors due to the great number of pixels necessary in a cluster to perform incident angle detection. In this paper, it is proposed a hybrid cluster with only four pixels, instead of eight pixels of previous solutions, that is able to detect both local light intensity and incident angle. The technique to detect local incident angle is widely exploited in the literature. Two novelties are explored in this work, the first is the new paradigm in polarization pixel-cluster design, and the second is extend ability of metal-shielded pixels to detect both local light angle and intensity. Experimental results show a dynamic range difference of less than 2.5 dB between a pixel with 40 % of metal shielding and a pixel no metal shielding. © 2017 IEEE.

关键词： Pixels

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New dye-sensitized solar cell (DSSC) based on BiVO4 film and bixin natural dye

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Journal of Photochemistry and Photobiology A: Chemistry 2025年 468卷

作者： Costa, Antonio G.R. Santos, Luzia R. Meneses, Paulo S.R. Viana, Vicente G.F. Costa, Isolda Antunes, Renato A. Silva, Rejane M.P. Gusmão, Gustavo M. Luz-Jr, Geraldo E. Santos, Reginaldo S. GreenTec-PGQ-GERATEC-DQ- University of Piauí João Cabral Street: N. 2231 P.O. Box 381 PI Teresina64002-150 Brazil Department of Chemistry-PPGQ Federal University of Piauí – UFPI Campus Ministro Petrônio Portella Ininga PI Teresina64049-550 Brazil Postgraduate Program in Materials Engineering PPGEM IFPI Central Campus Piauí Teresina Brazil Institute for Energy and Nuclear Research – IPEN/CNEN University City SP São Paulo05508-000 Brazil Center for Engineering Modeling and Applied Social Sciences – Federal University of ABC/UFABC Bangu Santo André SP 09210-580 Brazil

A new pathway to develop dye-sensitized solar cells is presented using bixin, lithium perchloride (LiClO4) and bismuth vanadate (BiVO4) formed electrochemically. Optical analysis showed the BiVO4 film has a 2.37 eV band gap, suitable for visible sunlight. X-ray diffraction (XRD) revealed that the film is crystalline with a monoclinic phase. At the same time, morphological characterization carried out by Field Emission Scanning Electron Microscopy (FEG-SEM) showed that the film is porous and formed by particles measuring around 200 nm. Complete (photo)electrochemical studies were carried out for the photoanode, electrolyte, and bixin dye solution to evaluate the charge transfer energies of each solar cell component. BiVO4/bixin film photovoltaic devices were fabricated using iodide/triiodide redox mediators and compared with dye-free BiVO4 cells. Adding LiClO4 to the electrolyte enhanced solar cell performance. Thus, the results presented in this paper indicate that solar cells formed by BiVO4/bixin can be considered promising devices for converting solar energy into electrical current. © 2025 Elsevier B.V.

关键词： Dye-sensitized solar cells

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