Results 81 to 90 of about 8,499,517 (292)

Multi-objective new product development by complete Pareto front and ripple-spreading algorithm [PDF]

open access: yes, 2014
Given several different new product development projects and limited resources, this paper is concerned with the optimal allocation of resources among the projects.
Hu, Xiao-Bing   +4 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Bidirectional Flyback-push-pull Dc-dc Converter

open access: yesEletrônica de Potência, 2015
This paper presents a bidirectional flyback- push-pull dc-dc converter. The main characteristics of the proposed converter are galvanic isolation by high- frequency transformers, high efficiency, reduced number of components and low current ripple at ...
duardo Valmir de Souza, Ivo Barbi
doaj   +1 more source

Single-stage line-coupled ac/dc converter with high power factor and ripple-free input current

open access: yes, 2019
Single-stage line-coupled ac/dc converter with high power factor and ripple-free input current is proposed. The proposed power factor correction circuit can achieve high power factor and ripple-free input current using a coupled inductor.
Choi, BW, Do, HL, Kwon, BH
core   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

open access: yesAdvanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee   +6 more
wiley   +1 more source

Performance Improvement for Two-Stage Single-Phase Grid-Connected Converters Using a Fast DC Bus Control Scheme and a Novel Synchronous Frame Current Controller

open access: yesEnergies, 2017
Two-stage single-phase grid-connected converters are widely used in renewable energy applications. Due to the presence of a second harmonic ripple across the DC bus voltage, it is very challenging to design the DC bus voltage control scheme in single ...
Bingzhang Li, Shenghua Huang, Xi Chen
doaj   +1 more source

Two‐Photon Grayscale Lithography (2GL) of High Mechanical and Optical Quality 3D Silica Glass Microstructures

open access: yesAdvanced Functional Materials, EarlyView.
Two‐photon grayscale lithography (2GL) enables high‐speed and precise 3D printing of thermolyzed silica glass microstructures with optical‐grade surface quality, high quality factors, and mechanical strength utilizing a custom‐made pre‐glass resist based on polyhedral oligomeric silsesquioxane (POSS) modified with a high‐sensitivity Norrish type II ...
Jonathan L. G. Schneider   +4 more
wiley   +1 more source

A New Zero Current Switching Ultra Step-Up Converter With Low Input Current Ripple

open access: yesIET Circuits, Devices and Systems
This paper proposes a high step-up converter featuring zero current (ZC) switching (ZCS) and continuous input current to enhance efficiency. The converter integrates switched capacitor and coupled inductor techniques to improve voltage gain while ...
Eiraj Rezai, Majid Delshad, Bahador Fani
doaj   +1 more source

A Zero Input Current Ripple Boost Converter for Fuel Cell Applications by Using a Mirror Ripple Circuit

open access: yes, 2012
[[abstract]]In this paper, a ripple mirror (RM) technique is proposed to achieve zero ripple condition. By choosing a boost converter as an illustrative example, the corresponding ripple mirror circuit is proposed where the average output voltage serves ...
Ching-Tsai Pan;S. K. Liang;C. M. Lai
core   +1 more source

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