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Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Phong Ngo Dongsheng Ma Integrated System Design Laboratory Department of Electrical and Computer Engineering University of Arizona Tucson Tucson AZ USA

In this paper, a CMOS switched-capacitor voltage doubler is proposed. It employs the techniques of clock synchronization and charge transfer blocking to minimize the reversion loss. The clock transition period detection and boosting circuit modules allow continuous charge action to the output node, which significantly improves operation performances. The proposed voltage doubler was designed using IBM 180 nm CMOS process, with a 1.2 V supply voltage. Under no-load condition, it achieves 99.92% of ideal voltage level with 8 mV voltage ripple, while consuming only 9.6 ¿W of quiescent power. With a load ranging from 20 k¿ to 200 k¿, the up-conversion ratio performs 45% better than the prior arts.

关键词： Clocks Boosting Charge transfer Switching converters Charge pumps Power supplies Timing Capacitors Threshold voltage Topology

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Smart Lighting system for Children's Therapy to Prevent Nyctophobia Syndrome at Bedtime 4

Smart Lighting System for Children's Therapy to Prevent Nyct...

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4th International Conference on Cybernetics and Intelligent system, ICORIS 2022

作者： Pramono, Andi Munir, Badrul Farchan, Muchammad Budiman, Satrio Arif Azis, Baskoro Putra, Wahyu Waskito Interior Design Department School of Design Bina Nusantara University Jakarta Indonesia Brawijaya University Departemen of Neurology Malang Indonesia Institut Teknologi Sepuluh Nopember Faculty of Intelligent Electrical and Informatics Technology Department of Electrical Engineering Surabaya Indonesia Brawijaya University Information System Computer Science Faculty Malang Indonesia

ISBN: (纸本)9781665453950

Everyone has a fundamental desire for sleep. By sleeping, humans can conserve energy and replenish their stamina to optimal levels. Lighting is one component that influences the quality of a person's sleep. One of them is a person who sleeps with the lights on, suffers from nyctophobia, has poor sleep quality, and may be responsible for several illnesses. This study aims to develop a smart lighting device that will aid in treating youngsters with nyctophobia to get used to sleeping with the lights off to improve their sleep quality. The case study methodology used in this study entails the development of a prototype. This method employs an oximeter as a heart rate detector and a sensor comparison as the measurement device. Arduino Uno circuit and heart rate sensor are the main devices in this research. At the same time, the NRF 24L01 is a communication medium between the two Arduino Uno boards. The experimental measurements in normal conditions indicate that the heart rate sensor was nearly the same as the value displayed by the oximeter. Similarly, after running for 1 minute, both devices produced almost identical results, with an average difference of 1 Beats Per Minute (BPM). According to experiments with a heart rate sensor, the switch-off condition can be activated if the heart rate hits 90 BPM. In this case, the light will switch off once the heart rate hits 70 BPM, which might be used for sleeping individuals. © 2022 IEEE.

关键词： Oximeters

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Fault Tolerant Reconfigurable Device Based on Autonomous-Repair Cells

Fault Tolerant Reconfigurable Device Based on Autonomous-Rep...

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International Conference on Field Programmable Logic and Applications

作者： Kentaro Nakahara Shin'ichi Kouyama Tomonori Izumi Hiroyuki Ochi Yukihiro Nakamura Department of Communications and Computer Engineering Kyoto University Japan Department of VLSI System Design Ritsumeikan University Japan

Reconfigurable devices are expected to be utilized in the mission-critical fields such as space development, because a system update and a pseudo-repair can be achieved remotely by reconfiguration. However, conventional reconfigurable devices suffer from configuration memory upsets caused by radiation in space. This paper proposes an architecture of a fault-tolerant reconfigurable device based on island-style FPGA. The device consists of "autonomous-repair cells" which repairs these upsets autonomously and dynamically. To determine the architecture, we analyze four autonomous repair techniques of the cell experimentally. Then, optimal autonomous repair techniques are applied to both of programmable logics and cell-to-cell routing resources. Through evaluation, we show that proposed device achieves more than 10 years average lifetime against configuration upsets even in a severe situation such as a satellite orbit

关键词： Fault tolerance Mission critical systems Space missions Field programmable gate arrays Logic devices Reconfigurable logic Programmable logic arrays Programmable logic devices Routing Satellites

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Light Shift Detection Using a Multiple Photodetection Method Suitable for a Chip-Scale Atomic Clock

Light Shift Detection Using a Multiple Photodetection Method...

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IEEE International Frequency Control Symposium

作者： Masahiro Fukuoka Shigeyoshi Goka Department of Electrical Engineering and Computer Science Graduate School of System Design Tokyo Metropolitan University Tokyo Japan

SummaryIn this study, we demonstrated light shift detection in a running atomic clock using the multi-photodetection method. This method enables the observation of atomic resonances with different intensities using the intensity distribution of the laser beam. As it requires only two photodiodes to detect light shifts, it is easily applicable to miniature vapor-cell-based atomic clocks such as chip-scale atomic clocks and miniature atomic clocks.

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IoT Multi-control Bionic Manipulator's design 3

IoT Multi-control Bionic Manipulator's Design

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3rd International Conference on Circuits, system and Simulation, ICCSS 2019

作者： Lili, Tang Qijun, Huang Wei, Huang Zhixing College of Hubei University Department of Computer and Information Engineering Wuhan China College of Wuhan University Department of Microelectronics Physics and Technology Wuhan China Fourth Laboratory System Design Institute of Hubei Aerospace Technology Academy Wuhan Wuhan China

ISBN: (纸本)9781728136578

This design uses STM32 microcontroller as the core controller of the mechanical arm, transplants Linux operating system to the S3C2440 development board and establishes the LAN server, realizes multiple functions and a variety of control mode: Android mobile app, personal PC in the local area network and gesture-sensing gloves can be used to control mechanical arm, it can also make the operation automatically. At the same time, because the server built, Linux system and QT interface transplanted are on S3C2440, so that the development board and all computers in the local area network can monitor the mechanical arm. This design is widely used in the field of intelligent industry, environmental exploration, intelligent home and so on. © 2019 IEEE.

关键词： Internet of things

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Energy and thermal aware mapping for mesh-based NoC architectures using multi-objective ant colony algorithm

Energy and thermal aware mapping for mesh-based NoC architec...

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IEEE International Conference on computer Research and Development

作者： Liu, Yanhua Ruan, Ying Lai, Zongsheng Jing, Weiping Dept. of Electronic Computer and Software Systems Institute of Microelectronics Circuit and System East China Normal University Shanghai China Dept. of Electronic Engineering Jiangsu Provincial Key Lab. of ASIC Design Nantong University Nantong China

ISBN: (纸本)9781612848372

Where IP cores to be mapped must be carefully solved for any given application in order to optimize different performance metrics in Network-on-Chip (NoC) design flow. The optimization of different performance metrics simultaneously may cause a negative effect on each other because of the strong correlation between these performance metrics. In this paper, we propose a multi-objective ant colony algorithm (MOACA) that maps IP cores onto mesh-based NoC architectures. This algorithm is an efficient way to find the pareto-optimal front which optimizes energy consumption and hotspot temperature of NoC. The algorithm has been implemented and evaluated for synthetic generated benchmarks. Experimental results confirm the efficiency, accuracy and scalability of the algorithm. © 2011 IEEE.

关键词： Network-on-chip

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DPN: Decoupling Partition and Navigation for Neural Solvers of Min-max Vehicle Routing Problems 41

DPN: Decoupling Partition and Navigation for Neural Solvers ...

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41st International Conference on Machine Learning, ICML 2024

作者： Zheng, Zhi Yao, Shunyu Wang, Zhenkun Tong, Xialiang Yuan, Mingxuan Tang, Ke Department of Computer Science and Engineering Southern University of Science and Technology Shenzhen China Department of Computer Science City University of Hong Kong Hong Kong School of System Design and Intelligent Manufacturing Southern University of Science and Technology Shenzhen China China Huawei Noah's Ark Lab Shenzhen China

The min-max vehicle routing problem (min-max VRP) traverses all given customers by assigning several routes and aims to minimize the length of the longest ***, reinforcement learning (RL)-based sequential planning methods have exhibited advantages in solving efficiency and ***, these methods fail to exploit the problem-specific properties in learning representations, resulting in less effective features for decoding optimal *** paper considers the sequential planning process of min-max VRPs as two coupled optimization tasks: customer partition for different routes and customer navigation in each route (i.e., partition and navigation).To effectively process min-max VRP instances, we present a novel attention-based Partition-and-Navigation encoder (P&N Encoder) that learns distinct embeddings for partition and ***, we utilize an inherent symmetry in decoding routes and develop an effective agent-permutation-symmetric (APS) loss *** results demonstrate that the proposed Decoupling-Partition-Navigation (DPN) method significantly surpasses existing learning-based methods in both single-depot and multi-depot minmax *** code is available at. Copyright 2024 by the author(s)

关键词： Sales

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Statistical discovery of site inter-dependencies in sub-molecular hierarchical protein structuring

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EURASIP JOURNAL ON BIOINFORMATICS AND systemS BIOLOGY 2012年第1期2012卷 1-18页

作者： Durston, Kirk K. Chiu, David K. Y. Wong, Andrew K. C. Li, Gary C. L. 1.School of Computer Science University of Guelph 50 Stone Road East Guelph ON N1G 2W1 Canada 2.Department of System Design Engineering University of Waterloo 200 University Ave. W Waterloo ON N2L 3G1 Canada

Background: Much progress has been made in understanding the 3D structure of proteins using methods such as NMR and X-ray crystallography. The resulting 3D structures are extremely informative, but do not always reveal which sites and residues within the structure are of special importance. Recently, there are indications that multiple-residue, sub-domain structural relationships within the larger 3D consensus structure of a protein can be inferred from the analysis of the multiple sequence alignment data of a protein family. These intra-dependent clusters of associated sites are used to indicate hierarchical inter-residue relationships within the 3D structure. To reveal the patterns of associations among individual amino acids or sub-domain components within the structure, we apply a k-modes attribute (aligned site) clustering algorithm to the ubiquitin and transthyretin families in order to discover associations among groups of sites within the multiple sequence alignment. We then observe what these associations imply within the 3D structure of these two protein families. Results: The k-modes site clustering algorithm we developed maximizes the intra-group interdependencies based on a normalized mutual information measure. The clusters formed correspond to sub-structural components or binding and interface locations. Applying this data-directed method to the ubiquitin and transthyretin protein family multiple sequence alignments as a test bed, we located numerous interesting associations of interdependent sites. These clusters were then arranged into cluster tree diagrams which revealed four structural sub-domains within the single domain structure of ubiquitin and a single large sub-domain within transthyretin associated with the interface among transthyretin monomers. In addition, several clusters of mutually interdependent sites were discovered for each protein family, each of which appear to play an important role in the molecular structure and/or function. Co

关键词： k-modes algorithm Site cluster Associations Ubiquitin Transthyretin Pattern discovery Cluster tree Attribute clustering Protein structural sub-domains

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Brain Tumor:Hybrid Feature Extraction Based on UNet and 3DCNN

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computer systems Science & engineering 2023年第5期45卷 2093-2109页

作者： Sureshkumar Rajagopal Tamilvizhi Thanarajan Youseef Alotaibi Saleh Alghamdi Center for System Design Chennai Institute of TechnologyChennai600069India Department of Information Technology Vel Tech Multi Tech Dr.Rangarajan Dr.Sakunthala Engineering CollegeChennai600062India Department of Computer Science College of Computer and Information SystemsUmm Al-Qura UniversityMakkah21955Saudi Arabia Department of Information Technology College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

Automated segmentation of brain tumors using Magnetic Resonance Imaging(MRI)data is critical in the analysis and monitoring of disease *** a result,gliomas are aggressive and diverse tumors that may be split into intra-tumoral groups by using effective and accurate segmentation *** is intended to extract characteristics from an image using the Gray Level Co-occurrence(GLC)matrix feature extraction method described in the proposed *** Convolutional Neural Networks(CNNs),which are commonly used in biomedical image segmentation,CNNs have significantly improved the precision of the state-of-the-art segmentation of a brain *** two segmentation networks,a U-Net and a 3D CNN,we present a major yet easy combinative technique that results in improved and more precise *** U-Net and 3D CNN are used together in this study to get better and more accurate estimates of what is going *** the dataset,two models were developed and assessed to provide segmentation maps that differed fundamentally in terms of the segmented tumour ***,the estimates was made by two separate models that were put together to produce the final *** comparison to current state-of-the-art designs,the precision(percentage)was 98.35,98.5,and 99.4 on the validation set for tumor core,enhanced tumor,and whole tumor,respectively.

关键词： Medical imaging segmentation U-net 3D CNN brain tumor

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A walking pattern generation for biped robot with parallel mechanism by considering contact force

A walking pattern generation for biped robot with parallel m...

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Annual Conference of Industrial Electronics Society

作者： M. Morisawa Y. Fujimoto T. Murakami K. Ohnishi Division of Electrical and Computer Engineering Yokohama National University Yokohama Japan Department of System Design Engineering Keio University Yokohama Japan

This paper describes a walking pattern generation of a biped robot with parallel mechanism. By using the parallel mechanism, all actuators have been arranged on the upper part of the body. The biped robot, whose leg is applied to a parallel linked structure, can be composed of a lightweight leg. Furthermore, the load torque of an actuator can be distributed. Therefore, the biped robot with parallel mechanism is suitable for walking. Such a biped robot can be regarded as 3 masses, that is body and two feet. State variables of three masses are defined in inertial space and these are represented by a time polynomial equation. A walking pattern is expressed by larger order of polynomials rather than the order which decided according to boundary conditions. By representing this, the walking pattern with which an evaluation function is satisfied is generable. In this paper, the second power sum of contact force of the robot is evaluated into time polynomial equation. The proposed method is very high extendibility. These approach is that a robot can adapt itself to various environment.

关键词： Legged locomotion Parallel robots Robot kinematics Leg Actuators Polynomials Equations Forward contracts Service robots Contacts

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