检索结果-内蒙古大学图书馆

5th International Conference on electrical engineering and Information and Communication Technology, ICEEICT 2021

作者： Uddin, Zia Uddin, Md. Jaber Islam, Mohammad Rafiqul Alam, M. Shafiul Soga, Tetsuo Choudhury, Md. Shamimul Haque International Islamic University Chittagong Dept. of Electrical and Electronic Engineering Bangladesh Manarat International University Dept. of Computer Science and Engineering Bangladesh King Fahad University of Petroleum and Minerals K.A. CARE Energy Research and Innovation Center Dhahran Saudi Arabia Nagoya Institute of Technology Dept. of Electrical and Mechanical Engineering Nagoya Japan

ISBN: (纸本)9781665495226

In this work, ZnO films were processed utilizing a standard blade coating procedure at different compression temperatures (50 to 90{circ}mathrm{C} temperature at 120 MPa compression). The X-ray Diffraction (XRD) technique is used to characterize the films. The crystallite sizes, microstrains, and dislocation densities of the ZnO nanoparticles (NPs) sample were studied using several methods, including the Modified Scherrer method, the Wagner-Agua (W-A) method, and the Halder-Wagner (H-W) method, based on XRD data. The results were compared to observe the effects of compression temperatures on various structural parameters. From the analysis, it is evident that ZnO nanoparticles are crystallite in nature with a hexagonal wurtzite phase. The crystallite size calculated from the Modified Scherrer method, the H-W, and the W-A methods match very well, are greatly inter-correlated, and range from 12.7 to 15.29 nm. The dislocation density and lattice strain exhibited an inverse relationship with crystallite size. The crystallinity improves gradually up to 70{circ}mathrm{C} with increasing compression temperatures, then decreases. However, impacts on various crystallite components caused by various temperatures at 120 MPa pressure are also utilized to characterize the Dye-sensitized solar cells (DSSCs) behavior. The photovoltaic performance of the 70{circ}mathrm{C} temperature 120 MPa compressed cell was shown to be better where the average crystallite size was comparatively large. © 2021 IEEE.

关键词： X ray diffraction

来源：评论

学校读者我要写书评

暂无评论

Achieving Gaussian Vector Broadcast Channel Capacity with Scalar Lattices

Achieving Gaussian Vector Broadcast Channel Capacity with Sc...

引用

IEEE International Symposium on Information Theory

作者： M. Yusuf Şener Gerhard Kramer Shlomo Shamai Shitz Ronald Böhnke Wen Xu School of Computation Information and Technology Technical University of Munich Munich Germany Munich Research Center Huawei Technologies Duesseldorf GmbH Munich Germany Dept. of Electrical and Computer Engineering Technion—Israel Institute of Technology Haifa Israel

ISBN: (数字)9798350382846

ISBN: (纸本)9798350382853

A coding scheme with scalar lattices is applied to K-receiver, Gaussian, vector broadcast channels with K independent messages, one for each receiver. The method decomposes each receiver channel into parallel scalar channels with known interference and applies dirty paper coding with a modulo interval, amplitude shift keying (ASK), and probabilistic shaping to each scalar channel. The achievable rate tuples include all points inside the capacity region by choosing truncated Gaussian shaping, large ASK alphabets, and large modulo intervals.

关键词： Codes Channel capacity Amplitude shift keying Noise Lattices Receivers Interference

来源：评论

学校读者我要写书评

暂无评论

Signal-Interference Bandpass Filters Using Resonant Transversal Filtering Sections With Asymmetrical Transfer Function Characteristics

Signal-Interference Bandpass Filters Using Resonant Transver...

引用

European Conference on Microwave

作者： David Chatzichristodoulou Symeon Nikolaou Photos Vryonides Dimitra Psychogiou Frederick Research Center Cyprus RF and Microwave Solutions Cyprus Dept. of Electrical and Computer Engineering and Informatics Frederick University Cyprus School of Engineering University College Cork Ireland Tyndall National Institute Ireland

This paper introduces a new class of planar bandpass filters (BPFs) with quasi-elliptic transfer functions obtained by cascading resonant transversal filtering sections (TFS) with asymmetric transfer function characteristics. Each TFS includes a parallel-type resonator in one of its two RF signal paths which in turn leads to two transmission zeros (TZs) without increasing the circuit size. Furthermore, it enables high-order filtering transfer functions to be realized by directly cascading multiple TFSs without the need for inter-stage impedance inverters. Theoretical examples of spectrally asymmetrical BPF responses using linear-circuit analysis illustrate the resonator-based TFS BPF concept’s operating principles. Additionally, a microstrip prototype was manufactured and measured at 1 GHz to demonstrate the proof of concept. The prototype exhibited the following RF performance characteristics: a center frequency of 1 GHz, a 3-dB bandwidth of 150 MHz, a minimum in-band insertion loss of 0.8 dB, and in-band group-delay variation: 4.2-7.5 ns.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Freeze-thaw electrical resistivity hysteresis response of frost susceptible clayey sands

Freeze-thaw electrical resistivity hysteresis response of fr...

引用

2021 International Foundations Congress and Equipment Expo: From Traditional to Emerging Geotechnics, IFCEE 2021

作者： Liu, Rui Offenbacker, Daniel Zhu, Cheng Schmalzel, John Mehta, Yusuf Barrowes, Benjamin Glaser, Danney Lein, Wade Center for Research and Education in Advanced Transportation Engineering Systems Dept. of Civil and Environmental Engineering Rowan Univ. GlassboroNJ United States Dept. of Electrical and Computer Engineering Rowan Univ. GlassboroNJ United States Center for Research and Education in Advanced Transportation Engineering Dept. of Civil and Environmental Engineering Rowan Univ. GlassboroNJ United States Cold Regions Research and Engineering Laboratory U.S. Army Engineer Research and Development Center HanoverNH United States

ISBN: (数字)9780784483428

In this study, we carry out lab-scale 1D electrical resistivity measurements of frost-susceptible clayey sands, focusing on several major influencing factors including initial water content, soil density, temperature, and freezing/thawing conditions. Soil columns are configured following a four-pole type Wenner electrode array and placed in an environmental chamber to reach target temperatures (-20°C to 0°C). We use a portable resistivity meter for temporal electrical resistivity measurements and thermocouples for temperature measurements. Experimental results highlight the significant dependence of soil electrical resistivity on temperature. Above the freezing point, higher initial liquid water content and larger bulk density decrease the electrical resistivity. Below the freezing point, soil resistivity increases with decreasing temperature. We observe a hysteresis effect on the evolution of electrical resistivity during the freeze thaw cycle. This study presents a relationship between the electrical resistivity of frozen soil and the key governing parameters. © ASCE.

关键词： Thermocouples

来源：评论

学校读者我要写书评

暂无评论

Crack Catcher AI - Enabling Smart Fracture Mechanics Approach for Damage Control in Thin Silicon Wafers for 3D Semiconductor Integrated Devices/Packages

Crack Catcher AI - Enabling Smart Fracture Mechanics Approac...

引用

2025 IEEE International Reliability Physics Symposium, IRPS 2025

作者： Preston, Gabriel Gonzolez, Greer Karnyoto, Andrea S. Mozar, Fitya S. Henry, Matthew M. Isnan, Mahmud Nugroho, Kuncahyo S. Candra, Henry Doris, Muhamad Putri, Dianing N. N. Sari, Tyas K Pardamean, Bens Djuana, Endang Speaks, Derrric Budiman, Arief S. Oregon Renewable Energy Center (OREC) Oregon Institute of Technology (Oregon Tech) Klamath Falls 97601 OR United States Dept. of Manufacturing & Mechanical Eng. & Tech. (MMET) Oregon Institute of Technology Klamath Falls 97601 OR United States Bioinformatics & Data Science Research Center (BDSRC) Bina Nusantara University Jakarta 11480 Indonesia Center for Artificial Intelligence and Advanced Technology (CAPTIVATE) Universitas Trisakti Jakarta 11440 Indonesia Department of Electrical Engineering Faculty of Industrial Technology Universitas Trisakti Jakarta 11440 Indonesia Industrial Eng. Dept. Bina Nusantara University Jakarta 11480 Indonesia Computer Sci. Dept. Bina Nusantara University Jakarta 11480 Indonesia Computer Science Department School of Computer Science Bina Nusantara University Jakarta 11480 Indonesia

ISBN: (纸本)9798331504779

The importance of silicon cannot be undermined - in photovoltaics (PV) as well as in semiconductor industries. However, silicon is very brittle. Silicon cells/wafers crack easily during manufacturing assembly and/or during device operations. Crack Catcher AI uses novel smart fracture mechanics approach with Artificial Intelligence (AI) methodologies to predict and control crack/damage evolution in thin silicon cells/wafers. This is critical as semiconductor 3D integration technology calls for wafer-to-wafer bonding with utmost alignment accuracy and yield/reliability. © 2025 IEEE.

关键词： 3D Integrated Devices/Packages Fracture Mechanics Machine Learning Approaches Silicon Crack

来源：评论

学校读者我要写书评

暂无评论

Pursuit-Evasion on a Sphere and When It Can Be Considered Flat

arXiv

引用

arXiv 2024年

作者： Milutinović, Dejan Von Moll, Alexander Manyam, Satyanarayana G. Casbeer, David W. Weintraub, Isaac E. Pachter, Meir Electrical and Computer Engineering Dept. University of California Santa Cruz Santa CruzCA United States The Control Science Center Aerospace Systems Directorate Air Force Research Laboratory DaytonOH45435 United States DCS Corporation DaytonOH United States Dept. of Electrical Engineering Air Force Institute of Technology Wright-Patterson AFB OH United States

In classical works on a planar differential pursuit-evasion game with a faster pursuer, the intercept point resulting from the equilibrium strategies lies on the Apollonius circle. This property was exploited for the construction of the equilibrium strategies for two faster pursuers against one evader. Extensions for planar multiple-pursuer single-evader scenarios have been considered. We study a pursuit-evasion game on a sphere and the relation of the equilibrium intercept point to the Apollonius domain on the sphere. The domain is a generalization of the planar Apollonius circle set. We find a condition resulting in the intercept point belonging to the Apollonius domain, which is the characteristic of the planar game solution. Finally, we use this characteristic to discuss pursuit and evasion strategies in the context of two pursuers and a single slower evader on the sphere and illustrate it using numerical *** Codes 58E10, 86A30, 37D40, 91A23, 49L12, 49Q10 © 2024, CC BY-NC-ND.

关键词： Spheres

来源：评论

学校读者我要写书评

暂无评论

Plug-and-Play Joint Image Deblurring and Detection

Plug-and-Play Joint Image Deblurring and Detection

引用

IEEE Workshop on Multimedia Signal Processing

作者： Corey Marrs Birendra Kathariya Zhu Li George York Dept. Electrical and Computer Engineering University of Missouri – Kansas City Kansas City MO Academy Center for UAS Research United States Air Force Academy Air Force Academy CO

Object detection is a widely researched topic in computer vision; however, current models often struggle with processing degraded images with adverse imaging conditions like low light, blur, and haze. Conventional approaches involve a separate image recovery network prior to detection, resulting in a large network that is sub-optimal in performance. Alternatively, in this study, we propose a lightweight plug-and-play solution to improve the performance of object detectors on degraded images, without the need for retraining the vision task, i.e., detector network. This solution utilizes an image enhancement plug-in subnetwork that can be turned on and off for the main vision task network, leading to improved detection accuracy without sacrificing inference time. Empirically, our proposed model achieved a 48.9% mean average precision (mAP) on a degraded Pascal VOC dataset, compared to the baseline model at 26.7%.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Photonic Crystal Back Reflectors for Enhanced Absorption in Amorphous Silicon Solar Cells

引用

MRS Online Proceedings Library 2021年第1期1245卷 1-6页

作者： Benjamin Curtin Rana Biswas Vikram Dalal Microelectronics Research Center Dept. of Electrical and Computer Engineering Iowa State University Ames USA Physics & Astronomy Ames Lab Iowa State University Ames USA

Photonic crystal back reflectors offer enhanced optical absorption in thin-film solar cells, without undesirable losses. Rigorous simulations of photonic crystal back reflectors predicted maximized light absorption in amorphous silicon solar cells for a pitch of 700-800 nm. Simulations also predict that for typical 250 nm i-layer cells, the periodic photonic crystal back reflector can improve absorption over the ideal randomly roughened back reflector (or the ‘4n2 classical limit’) at wavelengths near the band edge. The PC back reflector provides even higher enhancement than roughened back reflectors for cells with even thinner i-layers. Using these simulated designs, we fabricated metallic photonic crystal back reflectors with different etch dept.s and i-layer thicknesses. The photonic crystals had a pitch of 760 nm and triangular lattice symmetry. The average light absorption increased with the PC back reflectors, but the greatest improvement (7-8%) in short circuit current was found for thinner i-layers. We have studied the dependence of cell performance on the etch dept. of the photonic crystal. The photonic crystal back reflector strongly diffracts light and increases optical path lengths of solar photons.

关键词： amorphous Si absorption

来源：评论

学校读者我要写书评

暂无评论

Max-Min Fairness Power Allocation in Uplink RIS-Aided Cell-Free Massive MIMO

Max-Min Fairness Power Allocation in Uplink RIS-Aided Cell-F...

引用

IEEE Globecom Workshops

作者： Thong-Nhat Tran Giovanni Interdonato Daniel Benevides Da Costa Beongku An Dept. of Electronics and Computer Engineering in Graduate School Hongik University Republic of Korea Dept. of of Electrical and Information Engineering (DIEI) University of Cassino and Southern Latium Italy Digital Science Research Center Technology Innovation Institute Masdar City Abu Dhabi United Arab Emirates Dept. of Software and Communications Engineering Hongik University Republic of Korea

This paper evaluates the uplink spectral efficiency (SE) achieved by a reconfigurable intelligent surface (RIS)-aided cell-free massive MIMO system with max-min fairness (MMF) power allocation. We provide an exact closed-form expression for an achievable SE expression which assumes maximum ratio receive combining at the access points (APs) and centralized large-scale fading decoding at the central processing unit. The derived SE expression also accounts for imperfect channel estimation and spatially correlated Ricean fading channels for both direct (APs-users) and cascaded (APs-RISs-users) links. Alongside this, we provide a generalized SE expression and evaluate the performance achieved by local partial minimum mean-squared error combining. Finally, we optimally solve the RIS phase-shift selection problem in order to maximize the aggregate channel gains, and derive a closed-form solution to the MMF power allocation problem. Simulation results validate the effectiveness of the proposed framework in enhancing the unlink SE with resnect to various benchmarks.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Crosstalk-Based Parameterized Quantum Circuit Approximation

arXiv

引用

arXiv 2023年

作者： Ibrahim, Mohannad Bronn, Nicholas T. Byrd, Gregory T. Dept. of Electrical and Computer Engineering NC State University RaleighNC United States IBM Quantum IBM T.J. Watson Research Center Yorktown HeightsNY United States

In this paper, we propose an ansatz approximation approach for variational quantum algorithms (VQAs) that uses one of the hardware's main attributes, its crosstalk behavior, as its main approximation driver. By utilizing crosstalk-adaptive scheduling, we are able to apply a circuit-level approximation/optimization to our ansatz. Our design procedure involves first characterizing the hardware's crosstalk and then approximating the circuit by a desired level of crosstalk mitigation, all while effectively reducing its duration and gate counts. We demonstrate the effect of crosstalk mitigation on expressibility, trainability, and entanglement: key components that drive the utility of parameterized circuits. We tested our approach on real quantum hardware against a base configuration, and our results showed superior performance for the circuit-level optimized ansatz over a base ansatz for two quantum chemistry benchmarks. We take into consideration that applications vary in their response to crosstalk, and we believe that this approximation strategy can be used to create ansatze that are expressive, trainable, and with crosstalk mitigation levels tailored for specific workloads. © 2023, CC BY.

关键词： Crosstalk

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：