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Hyperspectral anomaly detection using Taylor expansion and weighted irregular block filter

Infrared Physics & technology 2025年 150卷

作者： Pei Xiang Jiajia Zhang Shuxia Qi Soon Ki Jung Huixin Zhou Dong Zhao School of Physics Xidian University Xi’an 710071 China School of Computer Science and Engineering Kyungpook National University Daegu 41566 Republic of Korea Jiangsu Province Engineering Research Center of Integrated Circuit Reliability Technology and Testing System Wuxi University Wuxi 214105 China

Hyperspectral anomaly detection (HAD) is a fundamental task in remote sensing image processing to identify anomalous targets that differ from the background spectrum. However, the interference of local background in hyperspectral images (HSIs) can lead to high false alarm rates in the detection results. We proposed a novel HAD method based on Taylor expansion and weighted irregular block filter (WIBF) to address this issue. First, to the best of our knowledge, we first introduced a single-pixel-based Taylor expansion method into the field of HAD to capture the different spectral features of the HSI. Second, a three-dimensional (3D) hyperspectral feature pyramid was constructed to extracted the feature image of the enhanced image. Third, a WIBF method was proposed to filter the feature image to suppress local background and preserve anomaly information. Fourth, an adaptive dual weight fusion method was proposed for the weighted fusion of the energy images to suppress noise and background. Finally, anomaly detection results were extracted from the reconstructed HSI, which was obtained by the inverse Taylor expansion. Experiments conducted on synthetic and real-world datasets demonstrated the effectiveness and superiority of the proposed method.

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A Novel Pipelining Encryption Hardware system with High Throughput and High Integration for 5G

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China Communications 2022年第6期19卷 1-10页

作者： Yuntao Liu Zesheng Shen Shuo Fang Yun Wang College of Information and Communication Engineering Harbin Engineering UniversityHarbin 150001China Key Laboratory of Advanced Marine Communication and Information Technology Ministry of Industry and Information TechnologyHarbin 150001China Guangdong Greater Bay Area Institute of Integrated Circuit and System Guangzhou 510535China

This paper presents a ZUC-256 stream cipher algorithm hardware system in order to prevent the advanced security threats for 5 G wireless *** main innovation of the hardware system is that a six-stage pipeline scheme comprised of initialization and work stage is employed to enhance the solving speed of the critical logical ***,the pipeline scheme adopts a novel optimized hardware structure to fast complete the Mod(231-1)*** function of the hardware system has been validated experimentally in *** hardware system shows great *** with the same type system in recent literatures,the logic delay reduces by 47%with an additional hardware resources of only 4 multiplexers,the throughput rate reaches 5.26 Gbps and yields at least 45%better performance,the throughput rate per unit area increases 14.8%.The hardware system provides a faster and safer encryption module for the 5G wireless network.

关键词： encryption hardware system for 5G ZUC-256 stream cipher algorithm pipeline scheme throughput rate integration rate

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Research on the cable routing optimisation by hybrid intelligent water drop algorithm

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International Journal of Materials and Structural Integrity 2018年第1-3期12卷 208-223页

作者： Li, Chunquan Zhang, Ming Shang, Yuling Hu, Yuwei School of Electromechanical Engineering Guilin University of Electronic Technology Guilin541004 China Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology Guilin541004 China National Demonstration Center for Experimental Electronic Circuit Education Guilin University of Electronic Technology Guilin541004 China

Cable assembly problem is formulated as searching for cable routes and the cable routing problem is one of the most challenging optimisation problems. Cable routing is the process of searching for obstacle-free path, which is constrained by the assembly points. Before routing, the routing environment is simplified to a two-dimensional grid map for computing reduction. In order to get the optimisation routing path, a novel approach of hybrid intelligent water drop algorithm (HIWDA) for cable routing is proposed, which is the hybridisation of particle swarm optimisation (PSO) and intelligent water drop algorithm (IWDA) for global searching and local searching respectively. In addition, B-spline curves are employed for smoothing routes obtained by HIWDA and making it more practical and more feasible for assembly. The result of HIWDA is verified by comparison with other algorithms in simulation on experiments. © 2018 Inderscience Enterprises Ltd.

关键词： Cables

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Design of 9T SRAM for dynamic voltage supplies by a multiobjective optimization approach

Design of 9T SRAM for dynamic voltage supplies by a multiobj...

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2010 IEEE International Conference on Electronics, circuits, and systems, ICECS 2010

作者： Berge, Hans Kristian Otnes Blesken, Matthias Aunet, Snorre Rückert, Ulrich Department of Informatics University of Oslo Norway System and Circuit Technology University of Paderborn Germany Cognitronics and Sensor Systems University of Bielefeld Germany

ISBN: (纸本)9781424481576

In this paper we present design and optimization results of a 9T SRAM cell in a 65 nm low power technology, which previously has not been investigated for subthreshold operation. The cell is capable of both read and write operations on a supply voltage from 300 mV to 1.2 V. In our implementation the SRAM cell employs both high and low Vt devices for lower leakage and faster read operation. The current work focuses on operation of the cell as a single port SRAM, although extension to dual port is possible. To optimize and find trade-offs for SRAM performance in both voltage domains we use a multi objective optimization method, where our design goals were robustness, leakage, operating speed and area. The optimization method provides an approximation of the set of all Pareto optimal designs. Based on this we may quickly select criteria for the objectives and easily optimize the rest of the parameters. Compared to recent publications the 9T cell of this paper shows promise of greatly reducing standby leakage power and good robustness while retaining a similar speed. ©2010 IEEE.

关键词： Multiobjective optimization

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Effect of Parasitic Capacitance on DG-HGTFET and its Influence on Device RF Performance 17th

Effect of Parasitic Capacitance on DG-HGTFET and its Influen...

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17th International Workshop on the Physics of Semiconductor Devices, IWPSD 2013

作者： Vijayvargiya, Vikas Kumar, Santosh Vishvakarma Nanoscale Devices VLSI/ULSI Circuit and System Design Lab Electrical Engineering Discipline Indian Institute of Technology Indore India

ISBN: (纸本)9783319030012

In this paper, for the first time, the design of double-gate hetero-gate-dielectric tunnel field effect transistor (DG-HGTFET) for asymmetric drain doping for RF (Radio frequency) application is discussed. The impact of drain parasitic capacitance on the device performance is analyzed. The results indicate that parasitic capacitances are dominating factor which will degrade the RF characteristics. For this, the RF figures of merit for DG-HGTFET are analyzed in terms of unit-gain cutoff frequency (fT), maximum frequency of oscillation (fmax). Further, asymmetric drain doping is also analyzed for suppressing the ambipolar behavior. © Springer International Publishing Switzerland 2014.

关键词： Tunnel field effect transistors

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Robust local cluster neural networks 14

Robust local cluster neural networks

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14th European Symposium on Artificial Neural Networks, ESANN 2006

作者： Eickhoff, Ralf Sitte, Joaquin Rückert, Ulrich Heinz Nixdorf Institute - System and Circuit Technology University of Paderborn Germany Smart Devices Lab - School of Computing Science and Software Engineering Queensland University of Technology Australia

ISBN: (纸本)2930307064

Artificial neural networks are intended to be used in future nanoelectronics since their biological examples seem to be robust to noise. In this paper, we analyze the robustness of Local Cluster Neural Networks and determine upper bounds on the mean square error for noise contaminated weights and inputs. © 2006 *** publication. All rights reserved.

关键词： Neural networks

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Independent gate operation of nand flash memory device with improved retention characteristics 19th

Independent gate operation of nand flash memory device with ...

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19th International Workshop on Physics of Semiconductor Devices, IWPSD 2017

作者： Bohara, Pooja Vishvakarma, S.K. Nanoscale Devices VLSI Circuit and System Design Laboratory Electrical Engineering Indian Institute of Technology Indore Simrol Indore453552 India

ISBN: (纸本)9783319976037

In this work we have analyzed Independent Gate (IG) operation of fully depleted double gate MOSFET to improve the retention characteristics and memory window of Silicon-Oxide-Nitride-Oxide-Silicon (SONOS) memory at relatively lower applied voltages. It is shown that biasing the back gate at negative potential during the reading operation significantly enhance the difference in the threshold voltages (Vth) of the programmed and erased state owing to strong electrostatic coupling between front and back gates. Results highlight that IG operation leads to 50% higher memory window in comparison with single gate mode. The retention characteristics at T = 358 K show that the memory window *1.2 V is obtained after 10 years. © Springer Nature Switzerland AG 2019.

关键词： Threshold voltage

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SpecScribe Analog - A specification tool extension for heterogeneous systems

SpecScribe Analog - A specification tool extension for heter...

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Forum on Specification, Verification and Design Languages, FDL

作者： Erik Markert Uwe Pross Ulrich Heinkel Chair Circuit and System Design Chemnitz University of Technology Germany Chair Circuit and System Design Chemnitz University of Technology

This paper describes a tool extension named SpecScribe Analog for the specification-driven design of heterogeneous (analog and digital) systems. For SpecScribe a specification consists of atomic items called requirements which can be hierarchically organized. These requirements can be translated to a more implementation like description using components or FSMs. The extension broadens the tool for the usage of hybrid automata. It allows the export of this requirement and implementation description to common languages like systemC(-AMS) or VHDL as well as to model checking languages like (hybrid-)SAL.

关键词： Automata Mathematical model Differential equations Acceleration system analysis and design Hybrid power systems Formal specifications

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Exploiting marine phospholipid nanoliposomes for enhanced apremilast delivery and therapeutic efficacy in inflammatory bowel disease

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Colloids and Surfaces A: Physicochemical and Engineering Aspects 2025年 719卷

作者： Shabana, Samah Hamouda, Hamed I. Yin, Heng Hamouda, Samia Ahmed, Busati El-Sayed, Mohamed H. Chi, Zhe Liu, Chenguang School of Biomedical Engineering Faculty of Medicine Liaoning Key Lab of Integrated Circuit and Biomedical Electronic System Dalian University of Technology Dalian116024 China Department of Biochemistry and Molecular Biology College of Marine Life Sciences Ocean University of China Qingdao266003 China Egyptian Ministry of Health and Population Cairo11516 Egypt Dalian Engineering Research Center for Carbohydrate Agricultural Preparations Dalian Technology Innovation Center for Green Agriculture Liaoning Provincial Key Laboratory of Carbohydrates Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian116023 China Nasr City Cairo11727 Egypt College of Food Science and Engineering Ocean University of China Qingdao266003 China Anesthesiology and ICU Department Faculty of Medicine for Girls Al-Azhar University Cairo Egypt Department of Biology College of Sciences and Arts-Rafha Northern Border University Arar Saudi Arabia

Marine phospholipid (MPL) nanoliposomes represent a new frontier in drug delivery systems, offering unique bio-functional and physicochemical properties. This study developed orally administered MPL nanoliposomes to enhance apremilast delivery and bioavailability in inflamed bowel disease (IBD). Drug release studies showed effective gastric protection (21.2 ± 0.4 % release at pH 1.2 after 2 h) and substantial release (96.4 ± 0.3 %) at pH 6.8 over 12 h. The optimized formulation (4 % drug w/w) showed remarkable stability over 6 weeks of storage at 4 °C. Apr/MPL nanoliposomes up to 300 µg/mL showed great cytocompatibility to RAW 264.7 macrophages and Caco2 intestinal cells. Furthermore, the formulation exhibited superior anti-inflammatory effects, significantly reducing nitric oxide (NO) production and downregulating pro-inflammatory cytokines (TNF-α, IL-1β, IL-6) in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. In vivo, Apr/MPL nanoliposomes improved recovery in a dextran sulfate sodium (DSS)-induced ulcerative colitis model, outperforming free apremilast. These findings underscore MPL nanoliposomes as a promising pharmacological tool for managing inflammation and a versatile drug delivery system for IBD. © 2025

关键词： Macrophages

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Tunnel silicon nitride manipulated reconfigurable bi-mode nociceptor analog

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Photonics Research 2024年第8期12卷 1820-1827页

作者： CHENGDONG YANG YILONG LIU LINLIN SU XINWEI LI LIHUA XU QIMEI CHENG Jiangsu Province Engineering Research Center of Integrated Circuit Reliability Technology and Testing System Wuxi UniversityWuxi 214105China

Neuromorphic applications have shown great promise not only for efficient parallel computing mode to hold certain computational tasks,such as perception and recognition,but also as key biomimetic elements for th intelligent sensory system of next-generation ***,achieving such a biomimetic nociceptor tha can adaptively switch operation mode with a stimulation threshold remains a *** rational design of material properties and device structures,we realized an easily-fabricated,low-energy,and reconfigurable no *** is capable of threshold-triggered adaptive bi-mode jump that resembles the biological alarm system With a tunnel silicon nitride(Si_(3)N_(4))we mimicked the intensity-and rehearsal-triggered jump by means of th tunneling mode transition of Si_(3)N_(4)*** threshold signals the device can also express some common synaptic functions with an extremely low energy density of 33.5 f J∕μm^(2).In addition,through the modulation o Si_(3)N_(4)thickness it is relatively easy to fabricate the device with differing pain *** nociceptor analog based on a tunneling layer provides an opportunity for the analog pain alarm system and opens up a new path toward threshold-related novel applications.

关键词： Tunnel tunneling rational

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