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检索条件"任意字段=9th International Conference on Computer Aided Design and Computer Graphics"

共 9684 条记录，以下是241-250 订阅

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design of Underwater Vehicle for Ship Draft Observation 9

Design of Underwater Vehicle for Ship Draft Observation

引用

9th international conference on Mechatronics and Robotics Engineering (ICMRE)

作者： Zhu, Jingyuan Han, Meng Zhang, Hongliang Qi, Lan Zhao, Lianyu Wang, Chenglin Tianjin Univ Technol Sch Mech Engn Tianjin Key Lab Adv Mech Syst Design & Intelligen Tianjin 300384 Peoples R China Tianjin Univ Technol Natl Demonstrat Ctr Expt Mech & Elect Engn Educ Tianjin 300384 Peoples R China Deepinfar Ocean Technol Inc Tianjin 300457 Peoples R China

ISBN: (纸本)9781665463263

Underwater Vehicles are very important underwater operation equipment, and a new underwater vehicle is designed in order to realize the measurement of the ship draft. the design is based on the ROV(Remote Operated Vehicle) structure, and the mobile power supply and the upper computer are mounted on the underwater vehicle body, aiming to accomplish the task of disconnecting the underwater vehicle from the cable under complex sea conditions. In this paper, the system communication and power supply scheme design, thruster arrangement, the center of gravity and floating center position design, and 3D model design are completed in turn to obtain a structural design scheme of the underwater vehicle based on the actual engineering background. Subsequently, the strength check of the overall frame was carried out based on ANSYS WORKBENCH, which proved that the material selection and structural design met the reliability requirements. Finally, the hydrodynamic characteristics of the robot were analyzed using ANSYS CFD.

关键词： underwater vehicle structural design strength calibration hydrodynamic analysis

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Dynamical Selective Image Encryption Using Chaos 9

Dynamical Selective Image Encryption Using Chaos

引用

9th international conference on Integrated Circuits, design, and Verification, ICDV 2024

作者： Hoang, thang Manh Hoang, Manh-Hai Pham, Quang-Anh Hanoi University of Science and Technology School of Electrical and Electronic Engineering Hanoi Viet Nam University of Alberta Department of Computer Science Edmonton Canada

ISBN: (纸本)9798350371864

Image data has been increasingly generated by cameras as well as acquisition modalities. Image data is diverse and has different sensitive levels. Encryption algorithms for massive image data are required not only high confidential but also high speed. Sometimes, the trade-off between the speed and confidentiality of an encryption occurs for image data, and it can be obtained with selective image encryption. However, most of existing selective image encryption algorithms are with fixed values of parameters, as a consequence, the confidentiality is threatened from cryptanalysis methods. In this paper, the scheme of selective image encryption using chaos is proposed, in which its parameters are changed dynamically. Specifically, the diffusion is carried out with dynamically selected pixels, and on its varying number of significant bits. the permutation performs on blocks of selected pixels with varying size. Intuitively, the security of the proposed scheme is improved by dynamical selective of data for the encryption. the exemplar simulation shows the effectiveness of the proposed scheme with security analysis by means of testing entropy, and correlation between neighbor pixels. the amount of data to be encrypted is also measured in compared with existing selective image encryption. © 2024 IEEE.

关键词： Pixels

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An Incentive Mechanism for Federated Learning in IIoT: A Long-Term Perspective 9

An Incentive Mechanism for Federated Learning in IIoT: A Lon...

引用

9th international conference on Intelligent Computing and Signal Processing, ICSP 2024

作者： Wang, Chu He, Shuo Li, Shupan Xing, Longlong Zhu, Saisai Xu, Gaohuan School of Computer and Artificial Intelligence Zhengzhou University Zhengzhou China

ISBN: (纸本)9798350376548

Federated learning (FL) is a new machine learning paradigm that can protect data privacy while enabling data-driven insights. Its performance heavily relies on the quality of local models that participants contribute. However, devices may be reluctant to contribute their resources without sufficient incentives. A carefully crafted incentive mechanism is crucial to the practical application of FL. However, existing studies overlook the long-term performance, the requirement of data freshness in some Industrial Internet of things (IIoT) applications, and the capability that IIoT devices can engage in multiple tasks simultaneously. To address these issues, we formulate the incentive mechanism as a stochastic optimization problem which minimizes the long-term energy cost of IIoT devices. Lyapunov optimization is employed to design an online winner selection and resource allocation algorithm. Moreover, we consider the data freshness as a criterion to design reward for devices to motivate their participation. Simulation results show that the proposed mechanism can effectively reduce the average energy cost of devices and ensure continuous participation. © 2024 IEEE.

关键词： Federated learning

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A Deterministic Concurrent-Routing Algorithm to Improve Wire Selection in FPGA Routing 9

A Deterministic Concurrent-Routing Algorithm to Improve Wire...

引用

9th international conference on Integrated Circuits, design, and Verification, ICDV 2024

作者： Siddiqi, Umair F. Sait, Sadiq M. King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia King Fahd University of Petroleum and Minerals Department of Computer Engineering Dhahran Saudi Arabia

ISBN: (纸本)9798350371864

An FPGA routing architecture consists of wire segments of different lengths. FPGA routers attempt to use longer wires for distant connections and shorter ones for closer connections. Due to the overhead associated with using longer wires, FPGA routers use them only when they have delay benefits over the shorter wires. the versatile place and route (VPR) is a popular open-source FPGA placement and routing tool. this work proposes a concurrent routing-based post-routing method for VPR to improve its utilization of longer wires. the proposed method builds an archive of routing trees using the VPR's connection router and then solves an integer linear programming (ILP) problem to select routing trees for each net in such a way that the overall wire length is reduced with no effect on the critical path delay of the circuit. Experiments using Titan 23 benchmarks showed that it could reduce the utilization of larger wires by 4.43 \% on average without increasing the total wire length or critical path delay. © 2024 IEEE.

关键词： Integer linear programming

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design and Implementation of a High-Performance DSP External Memory Controller 9

Design and Implementation of a High-Performance DSP External...

引用

9th international conference on Integrated Circuits and Microsystems, ICICM 2024

作者： Jiang, Jialing Wang, Dong School of Physics and Optoelectronics Xiangtan University Hunan GREAT-LEO MICRO Electronics Co. Ltd Hunan Xiangtan China

ISBN: (纸本)9798331509453

To meet the need for rapid data transmission between the core of high-performance Digital Signal Processor (DSP) chips and external memory, as well as to manage different types of external memory flexibly, we have designed an External Memory Controller (EMC). this module not only manages multiple peripherals and supports concurrent and parallel access but also provides excellent flexibility and configurability, making it suitable for various system requirements. the EMC includes SDMA, IDMAO, IDMA1, and a dedicated ET debugging DMA channel. the SDMA channel facilitates data transfer between multiple peripherals connected to the DMA Switch Fabric outside the core and the core's internal memory spaces. the IDMA channels support fast data transfer between any two memory locations within the core. the ET dedicated DMA channel is used for JTAG debugging, ensuring the correct operation, superior performance, and reliability of the DSP chip. the EMC operates independently of CPU control, enabling rapid and large-scale data movement. After functional simulation verification and coverage analysis, the designed EMC component has achieved the expected objectives and meets the design requirements. © 2024 IEEE.

关键词： computer debugging

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theoretical study on the influence of structural parameter errors on the end trajectory accuracy of cam manipulators 9

Theoretical study on the influence of structural parameter e...

引用

9th international Symposium on Sensors, Mechatronics, and Automation System, ISSMAS 2023

作者： Pang, Xiangyun Wei, Chunyu School of Mechanical Engineering Shenyang Jianzhu University Shenyang110168 China

ISBN: (纸本)9781510672802

Manipulators with cams as the core components play an important role in industry. According to the designed end trajectory of the cam manipulator and the given necessary structural parameters, the cam profile can be inversely obtained. It is noteworthy that the cam profile is designed based on the theoretical correct size of all structural parameters. the size of the structural parameters of the parts changes within the given tolerance range during machining, so the manufacturing error of the actual structural parameters will inevitably lead to errors between the actual end track and the ideal track. In order to study the influence of structural parameter error on the end track accuracy, the cam profile curve is designed by analytical method, and the specific structural parameters that affect the end track accuracy are obtained through theoretical derivation. the theoretical analysis and provided a basis for strictly controlling the sensitive error in actual processing. © 2024 SPIE.

关键词： design and modelling Error analysis Tolerancing Manufacturing computer aided design

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design of Adaptive PID Controllers Subject to Process Constraints 9

Design of Adaptive PID Controllers Subject to Process Constr...

引用

9th international conference on Control, Decision and Information Technologies, CoDIT 2023

作者： Tzouanas, Vassilios Barbieri, Enrique University of Houston - Downtown Computer Science and Engineering Technology Department HoustonTX77002 United States Cullen College of Engineering University of Houston Technology Division HoustonTX77204 United States

ISBN: (纸本)9798350311402

this paper presents a new method to design adaptive Proportional-Integral-Derivative (PID) controllers which optimize a performance criterion (integral absolute error or integral square error) subject to constraints such as controlled variable, manipulated variable and rate of change constraints. the design method is applicable to linear or nonlinear processes. Modeling of such processes is done using a linear ARX model. In addition, the design method is independent of the PID controller type and accounts for controllers with proportional or derivative action on the control error or the process variable. the proposed design method is not analytic in nature, but rather it is implemented using existing MATLAB optimization functions and demonstrated using simulation experiments for linear and nonlinear processes. © 2023 IEEE.

关键词： three term control systems

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design of Active Collision Avoidance Algorithm for Driverless Cars Based on Machine Vision 6

Design of Active Collision Avoidance Algorithm for Driverles...

引用

2023 IEEE 6th international conference on Information Systems and computer aided Education, ICISCAE 2023

作者： Hu, Xinyuan Ye, Naijia University of Sussex BrightonBN1 9RH United Kingdom

ISBN: (纸本)9798350313444

With the continuous progress of society, the problem of traffic congestion is becoming increasingly serious. However, when an unmanned vehicle is driving on the highway, it is unavoidable to encounter situations such as vehicle collisions and rear-end collisions. In order to effectively solve this problem, this article proposes to use machine vision technology to deal with such events. By using a computer image recognition system, the required recognition information can be analyzed and extracted to obtain the required results. At the same time, the video data also needs to be converted into digital signals and output to the control unit to realize the automatic collision avoidance function. this article tests the performance of the active collision avoidance algorithm of driverless cars. the test results show that the recall rate of the collision avoidance algorithm is between 0.7-0.89, and the highest collision avoidance accuracy can reach 0.97. this shows that this method can greatly improve the safety performance of driverless cars and create a safer and more convenient travel environment. © 2023 IEEE.

关键词： Active Collision Avoidance Automobile design Driverless Driving Machine Vision

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FAMMNPB: design of an Enhanced Forensic Analysis Model with Multidomain Feature Extraction and Advanced Neural Architecture for Permissioned Blockchains 9

FAMMNPB: Design of an Enhanced Forensic Analysis Model with ...

引用

9th IEEE international conference for Convergence in Technology, I2CT 2024

作者： Mate, Ashwini Y. Khandare, Kiran S. Hassan, Mohammad Bode, Kiran Nikesh Bode, Nikesh S. Missal, Karishma K. Nagpur India Nagpur India J D College of Engineering And Technology Department of Electronics And Telecommunication Nagpur India J D College of Engineering And Technology Department of Computer Science And Engineering Nagpur India Suryodaya College of Engineering And Technology Department of Computer Science And Engineering Nagpur India J D College of Engineering And Technology Department of Information Technology Nagpur India

ISBN: (纸本)9798350394474

this work introduces a novel approach that leverages multidomain feature extraction coupled with a 1D Convolutional Neural Network (CNN) for robust anomaly detection. To address the challenge of transaction delay predictions, we employ a Bi-directional Gated Recurrent Unit (BiGRU) RNN, for its capability to capture temporal sequences with high precision. For the task of chain splitting, the Teaching-Learning-based Optimization (TLbO) technique is used to ensure the efficient creation of sidechains. Further, we integrated DeepSHAP, in tandem with 1D CNN and BiGRU, to enhance the performance of our models, fostering better trust in the results. Our proposed methodology yields notable improvements over existing techniques. As we observed enhancements in the precision of anomaly detection by 4.9%, accuracy in detecting anomalous events by 3.5%, Recall by 4.5% and AUC by 3.9%. these advancements fortify the security posture of permissioned blockchains and optimize their operational efficacy, thus marking a significant improvement in blockchain forensics. © 2024 IEEE.

关键词： Feature extraction

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Systematic design for Effective Learning in Virtual Reality 22

Systematic Design for Effective Learning in Virtual Reality

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22nd IEEE international conference on Advanced Learning Technologies (ICALT)

作者： Heinemann, Birte Goerzen, Sergej Schroeder, Ulrik Rhein Westfal TH Aachen LuFG i9 Aachen Germany

ISBN: (纸本)9781665495196

Virtual Reality offers many opportunities for use in learning and teaching. However, the creation of Virtual Reality learning opportunities need many resources. Systematic efforts are needed to design learning activities and prepare them for research to be able to show learning effectiveness in the future. this paper describes the planning, development and the evaluation method of Virtual Reality learning activities for computer graphics education. the focus is on the development process of the didactic concept, as well as the immersive Virtual Reality environment. through the early integration of Learning Analytics components, the foundations for exploring insights into the learning processes are implemented. the methodical combination of software and didactic development offers the advantages of both approaches;the systematic collection of learning data enables early didactic monitoring and hypothesis generation for research.

关键词： Learning Analytics Virtual Reality Software Development Educational design computer graphics DBR

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