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42nd IEEE Real-Time Systems Symposium, RTSS 2021

作者： Shekarisaz, Mohsen Thiele, Lothar Kargahi, Mehdi School of Electrical and Computer Engineering University of Tehran Tehran Iran Computer Engineering and Networks Laboratory ETH Zürich Zürich Switzerland

ISBN: (纸本)9781665428026

Today’s deeply embedded systems, with real-time interactions to the environment, are largely battery-operated, and peripheral modules like LTE, WiFi, and GPS are among the most energy-hungry components of them. These components are often under the direct control of an embedded software. Some pieces of the software program are called energy hotspots if they can be transformed towards better system energy consumption while leaving it logically- and temporally-correct. This paper focuses on three such energy hotspots from the peripheral module perspective. The root causes of the hotspots in the software program are misplaced driver calls: Early acquiring or late releasing of the module causes it to waste energy in the active state, having unnecessary distance between the use operations causes extra tail energy overhead, and unaccounted releasing and re-acquiring of the module causes more energy consumption in comparison to leaving the module unreleased. We provide static analysis methods for the detection and elimination of such energy hotspots automatically with regard to some relations between temporal requirements of the real-time embedded software, the time and energy specifications of the module, and the extreme (worst-case/best-case) execution times of specific pieces of the software program. Our simulation results show about 4.7 to 20 percent of energy reductions after elimination of the energy hotspots of the test programs using our proposed method. © 2021 IEEE

关键词： Real time systems

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Leveraging UAV-RIS Reflects to Improve the Security Performance of Wireless Network Systems

IEEE Networking Letters

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IEEE Networking Letters 2023年第2期5卷 81-85页

作者： Sun, Jianwei Zhang, Heng Wang, Xin Yang, Ming Zhang, Jian Li, Hongran Gong, Chenglong Jiangsu Ocean University School of Electronic Engineering Lianyungang222000 China Jiangsu Ocean University School of Computer Engineering Lianyungang222000 China Shandong Provincial Key Laboratory of Computer Networks Shandong Computer Science Center Jinan250014 China

In this letter, a novel application method of reconfigurable intelligent surfaces (RIS) is proposed, which installs a RIS on an unmanned aerial vehicle (UAV) rather than fixed to buildings. When the location information of the eavesdropper is unknown, the UAV's rapid deployment and RIS's ability to change the transmission channel are utilized to dynamically optimize the UAV's flight trajectory and RIS's phase shift. The trajectory of the UAV and phase shift of the RIS are optimized to avoid the risk of potential eavesdropping and improve the average downlink secrecy rate of the system. This letter utilizes Q-learning and Deep Q-network (DQN) algorithms to solve the problem. Experiments show that RIS can reduce the flight distance of the UAV on the premise of ensuring security. The scenarios where the two algorithms are applicable are analyzed, and the DQN algorithm is more suitable for the scenarios of large state and action spaces. Also, the experimental results imply that the RIS-assisted UAV improves the average downlink secrecy rate and system security. © 2019 IEEE.

关键词： Signal to noise ratio

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A Spatial Domain Quantum Watermarking Scheme

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Communications in Theoretical Physics 2016年第7期65卷 66-76页

作者：魏战红陈秀波徐淑奖钮心忻杨义先 School of Information Engineering Beijing Institute of Petrochemical Technology Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications State Key Laboratory of Information Security (Institute of Information Engineering Chinese Academy of Sciences) Shandong Provincial Key Laboratory of Computer Networks Shandong Computer Science Center(National Supercomputer Center in Jinan)

This paper presents a spatial domain quantum watermarking scheme. For a quantum watermarking scheme,a feasible quantum circuit is a key to achieve it. This paper gives a feasible quantum circuit for the presented scheme. In order to give the quantum circuit, a new quantum multi-control rotation gate, which can be achieved with quantum basic gates, is designed. With this quantum circuit, our scheme can arbitrarily control the embedding position of watermark images on carrier images with the aid of auxiliary qubits. Besides reversely acting the given quantum circuit, the paper gives another watermark extracting algorithm based on quantum measurements. Moreover, this paper also gives a new quantum image scrambling method and its quantum circuit. Differ from other quantum watermarking schemes, all given quantum circuits can be implemented with basic quantum gates. Moreover, the scheme is a spatial domain watermarking scheme, and is not based on any transform algorithm on quantum images. Meanwhile, it can make sure the watermark be secure even though the watermark has been found. With the given quantum circuit, this paper implements simulation experiments for the presented scheme. The experimental result shows that the scheme does well in the visual quality and the embedding capacity.

关键词： quantum cryptography quantum images quantum watermark spatial domain quantum watermark

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Color pornographic image detection based on color-saliency preserved mixture deformable part model

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Multimedia Tools and Applications 2018年第6期77卷 6629-6645页

作者： Tian, Chunna Zhang, Xiangnan Wei, Wei Gao, Xinbo State Key Laboratory of Integrated Services Networks School of Electronic Engineering Xidian University Xi’an710071 China School of Computer Science and Engineering Northwestern Polytechnical University Xi’an710129 China

To utilize the rich semantic information of sexual organs, we propose a new framework for pornographic image detection based on sexual organ detectors. Traditional sexual organ detectors are built on shape features. Since the color distribution of sexual organ in same pose is consistent, color is an important visual clue to represent sexual organs. We use color attribute to describe the local color of sexual organs and concatenate it with histogram of oriented gradients based shape feature to represent sexual organs. Based on the concatenated feature, we train sexual organ detectors by the color-saliency preserved mixture deformable part model (CPMDPM). We detect pornographic images sequentially with sexual organ detectors. In experiments, the optimal part number of the deformable part model is chosen experimentally. We evaluate the performance of each CPMDPM based sexual organ detector, which is superior over the shape feature based detector. The proposed pornographic detection method is superior over methods based on low level features of skin regions, bag of words model and color incorporated SIFT features etc. © 2017, Springer Science+Business Media New York.

关键词： Color

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Untitled

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IEEE CIRCUITS AND SYSTEMS MAGAZINE 2014年第1期14卷 4-+页

作者： Tse, Chi K. School of Electronics and Information Engineering Ministry of Education Key Laboratory for Intelligent Networks and Network Security Xi'an Jiaotong University Xi'an China Department of Electrical and Computer Engineering University of Delaware Newark DE USA

The articles in this special issue focus on recent trends in circuits and systems engineering education, with particular emphasis on the principles of multiport communication theory; curriculum development; and biomet... 详细信息

关键词： Special issues and sections Circuits and systems Electrical engineering education Education courses Educational institutions Biometrics Communication theory

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Automatic Control System of Water and Fertilizer Based on Fuzzy Control Algorithm and Simulation 2

Automatic Control System of Water and Fertilizer Based on Fu...

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2017 IEEE 2nd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC 2017)

作者： Yan Jiang Jingbo Zhao Jie Duan Huijuan Hao Maoli Wang College of Automation Engineering Qingdao University of Technology Shandong Provincial Key Laboratory of Computer Networks Shandong Computer Science Center(National Super computer Center in Jinan)

ISBN: (纸本)9781509064151;9781509064144

In order to improve the precision of mixing fertilizer, this paper has improved its structure on the basis of pulse width modulation of the VENTURI variable fertilization device, and realizes the concentration of liquid fertilizer by p H and EC sensor to make it a closed-loop control Mixed fertilizer device. The device adopts the control strategy of the thickness level 2 adjustment. First, the corresponding duty relation is called according to the measured inlet pressure, and the duty ratio of the solenoid valve PWM control is automatically adjusted. And the fuzzy control algorithm is used to further fine-tune the duty cycle of PWM so that the concentration of the mixture is as close as possible to the target concentration. Finally, the fuzzy control and PID control of the flow control valve are simulated. The results show that fuzzy control is better than PID control in response speed and overshoot, and both steady-state errors are within ± 3.0%.

关键词： Fertilizer Venturi Tube Automatic control Fuzzy control Simulation

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Compact triplexer in two-dimensional hexagonal lattice photonic crystals

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Chinese Optics Letters 2011年第4期9卷 87-90页

作者：任宏亮马建平温浩覃亚丽吴哲夫胡卫生姜淳金耀辉 College of Information Engineering Zhejiang University of Technology College of Computer Science and Technology Zhejiang University of Technology State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University

We design a compact triplexer based on two-dimensional （2D） hexagonal lattice photonic crystals （PCs）. A folded directional coupler （FDC） is introduced in the triplexer beside the point-defect micro-cavities and line-defect waveguides. Because of the reflection feedback of the FDC, high channel drop efficiency can be realized and a compact size with the order of micrometers can be maintained. The proposed device is analyzed using the plane wave expansion method, and its transmission characteristics are calculated using the finite-difference time-domain method. The footprint of the triplexer is about 12 9 μm, and its extinction ratios are less than -20 dB for 1310 nm, approximately -20 dB for 1490 nm, and under -40 dB for 1550 nm, making it a potentially essential device in future fiber-to-the-home networks.

关键词： Crystal lattices Defects Fiber optic networks Finite difference time domain method Multiplexing equipment Optical waveguides Personal communication systems Time domain analysis Two dimensional

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Reinforced Multi-teacher Knowledge Distillation for Efficient General Image Forgery Detection and Localization

arXiv

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arXiv 2025年

作者： Yu, Zeqin Ni, Jiangqun Zhang, Jian Deng, Haoyi Lin, Yuzhen School of Computer Science and Engineering Sun Yat-sen University China School of Cyber Science and Technology Sun Yat-sen University China Department of New Networks Peng Cheng Laboratory China Guangdong Key Laboratory of Intelligent Information Processing Shenzhen University China

Image forgery detection and localization (IFDL) is of vital importance as forged images can spread misinformation that poses potential threats to our daily lives. However, previous methods still struggled to effectively handle forged images processed with diverse forgery operations in real-world scenarios. In this paper, we propose a novel Reinforced Multi-teacher Knowledge Distillation (Re-MTKD) framework for the IFDL task, structured around an encoder-decoder ConvNeXt-UperNet along with Edge-Aware Module, named Cue-Net. First, three Cue-Net models are separately trained for the three main types of image forgeries, i.e., copy-move, splicing, and inpainting, which then serve as the multi-teacher models to train the target student model with Cue-Net through self-knowledge distillation. A Reinforced Dynamic Teacher Selection (Re-DTS) strategy is developed to dynamically assign weights to the involved teacher models, which facilitates specific knowledge transfer and enables the student model to effectively learn both the common and specific natures of diverse tampering traces. Extensive experiments demonstrate that, compared with other state-of-the-art methods, the proposed method achieves superior performance on several recently emerged datasets comprised of various kinds of image forgeries. © 2025, CC BY-NC-SA.

关键词： Image coding

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Light-weight network health monitoring

Light-weight network health monitoring

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11th ACM/IEEE Conference on Information Processing in Sensing networks, IPSN'12

作者： Chiang, Yi-Hsuan Keller, Matthias Lim, Roman Huang, Polly Jan, Beutel Graduate Institute of Communication Engineering National Taiwan University Taiwan Computer Engineering and Networks Laboratory ETH Zurich Switzerland

ISBN: (纸本)9781450312271

As the application of WSNs for long-term monitoring purposes becomes real, the issue of WSN system health monitoring grows increasingly important. Manually understanding the root causes of an observed behavior is time-consuming and difficult, often knowledge of prior behavior is necessary for understanding the potential risk on the long-term system performance. The challenges lie in the balance between the amount of system data collected and the level of detail in which state can be inferred from this data. In this paper, we propose a lightweight runtime logging and corresponding network state inference mechanism that enables scalable WSN health monitoring. Concretely, we propose that nodes only report their internal state on the occurrence of important events. Having a very low computational complexity and message overhead within the sensor network, reported events are analyzed at a less constrained network sink. © 2012 ACM.

关键词： Wireless sensor networks

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A Novel Forwarding Method for Full-Duplex Two-Way Relay networks

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China Communications 2017年第4期14卷 65-72页

作者： Shuangshuang Han Xiang Cheng Liuqing Yang The State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of SciencesBeijing China and Qingdao Academy of Intelligent Industries The State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University Department of Electrical and Computer Engineering Colorado State University

An estimate-and-forward(EF) scheme for single-input single-output(SISO) and multiple-input multiple-output(MIMO) full-duplex two-way relay networks is proposed and analyzed. The relay estimates the received signal from two terminal nodes by a minimum mean squared error(MMSE) estimation and forwards a scaled version of the MMSE estimate to the destination. The proposed EF outperforms conventional amplify-and-forward(AF) and decode-and-forward(DF) across all signal-to-noise ratio(SNR) region. Because its computational complexity is high for relays with a large number of antennas(large MIMO) and/or high order constellations, an approximate EF scheme, called list EF, are thus proposed to reduce the computational complexity. The proposed list EF computes a candidate list for the MMSE estimate by using a sphere decoder, and it approaches the performance of the exact EF relay at a negligible performance loss. The proposed forwarding approach also could be used to other relay networks, such as half-duplex, one-way or massive MIMO relay networks.

关键词： estimate-and-forward full-duplex two-way relay wireless communications

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