检索结果-内蒙古大学图书馆

High‑accuracy measurement of Compton scattering in germanium for dark matter searches

nuclear Science and Techniques 2022年第12期33卷 75-87页

作者： Hai‑Tao Jia Shin‑Ted Lin Shu‑Kui Liu Hsin‑Chang Chi Muhammed Deniz Chang‑Hao Fang Peng Gu Xi Jiang Yi‑Ke Shu Qian‑Yun Li Yu Liu Ren‑Ming‑Jie Li Chen‑Kai Qiao Chang‑Jian Tang Henry Tsz‑King Wong Hao‑Yang Xing Li‑Tao Yang Qian Yue Yu‑Lu Yan Kang‑Kang Zhao Jing‑Jun Zhu College of Physics Sichuan University610065 ChengduChina Department of Physics National Dong Hwa University97401 ShoufengHualienChina Department of Physics Dokuz Eylül University35160 BucaİzmirTurkey Institute of Physics Academia Sinica11529 TaipeiChina Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua University100084 BeijingChina Institute of Nuclear Science and Technology Sichuan University610065 ChengduChina

Compton scattering with bound electrons contributes to a significant atomic effect in low-momentum transfer,yielding background structures in direct light dark matter searches as well as low-energy rare event *** report the measurement of Compton scattering in low-momentum transfer by implementing a 10-g germanium detector bombarded by a^(137)Cs source with a radioactivity of 8.7 mCi and a scatter photon captured by a cylindrical NaI(Tl)detector.A fully relativistic impulse approximation combined with multi-configuration Dirac–Fock wavefunctions was evaluated,and the scattering function of Geant4 software was replaced by our calculation *** measurements show that the Livermore model with the modified scattering function in Geant4 is in good agreement with the experimental *** is also revealed that atomic many-body effects significantly influence Compton scattering for low-momentum transfer(sub-keV energy transfer).

关键词： Compton scattering experiment Germanium detector Atomic many-body effects Geant4 Dark matter

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “First-principles calculations of phase transition, phonon spectra, thermodynamic properties and elasticity for PuO 2 polymorphs” [J. Solid State Chem. 341 (2025) 125080]

引用

Journal of Solid State Chemistry 2025年 342卷

作者： Junjie Ai Tengfei Ma Hang You Minghong Xie Xiaofeng Tian The College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu 610059 China Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province Chengdu University of Technology Chengdu China

来源：评论

学校读者我要写书评

暂无评论

A Dual-domain Diffusion Model for Sparse-view CT Reconstruction

TechRxiv

引用

TechRxiv 2023年

作者： Yang, Chun Sheng, Dian Yang, Bo Zheng, Wenfeng Liu, Chao The School of Automation Engineering The Glasgow College University of Electronic Science and Technology of China Chengdu610054 China The School of Automation Engineering University of Electronic Science and Technology of China Chengdu610054 China LIRMM University of Montpellier-CNRS Montpellier34095 France

A new deep-learning approach, dual-domain diffusion model (DDDM), is proposed for sparse-view CT reconstruction, which is composed of a sinogram upgrading module (SUM) and an image refining module (IRM) connected in series. In the sinogram domain, a novel degrading and upgrading framework is defined, in which SUM is trained to upgrade sparse-view sinograms step by step to reverse the degradation process of CT images caused by successive down-sampling of scanning views. In the image domain, IRM adopts an improved denoising diffusion framework to further reduce remaining artifacts and restore image details, where a skip connection from the original sparse-view sinogram is introduced to constrain the generation of details. Our DDDM shows significant improvement over deep-learning baseline models in both classical similarity metrics and perceptual loss, and has good generalization to untrained organs. We release our code at: https://***/YC-Markus/code-for-DDDM. © 2023, CC BY.

关键词： Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

Decreasing perturbation signal based multivariable extremum seeking approach with application in self-optimization operation of illumination system

引用

Energy and Buildings 2025年 342卷

作者： Zhan, Yi Yin, Chun Hou, Zhiqi Dadras, Sara Yan, Zhongbao College of Tourism and Cultural Industry Chengdu University Chengdu610106 China School of Automation Engineering University of Electronic Science and Technology of China Chengdu611731 China Electrical and Computer Engineering Department Utah State University LoganUT84321 United States

The paper develops a multivariable extremum seeking control based on decreasing perturbation signal for multivariable dynamical systems, to speed up convergence and improve the control precision of extremum seeking (ES) and apply to self-optimization operation of illumination system. The framework of the developed ES is proposed to make the amplitudes of the perturbation signals vary with the estimated error of the extremum point, to guarantee the amplitudes converge exponentially to zero. It can be useful for avoiding effectively negative effect of the steady state chattering problem and decreasing the possibility of dropping into the local extremum point. The multivariable ES scheme can also enhance the convergence speed to fasten the tracking of the extremum point. The analysis of stability for the developed multivariable ES is given by utilizing the averaging theory and center manifold method. Simulation and experimental studies in the lighting system display advantages of the considered approach, in comparison with the multivariable Gradient/Newton-based ESs. © 2025 Elsevier B.V.

关键词： Luminescent devices

来源：评论

学校读者我要写书评

暂无评论

A Planning Approach for Grid-side Energy Storage Considering Load-peak in the Urban Power Grid

A Planning Approach for Grid-side Energy Storage Considering...

引用

Power and Energy (PandaFPE), Panda Forum on

作者： Jiankun Zhu Shengyong Ye Shuaijia He Hongjun Gao Junyong Liu Jianglin Zhang College of Electrical Engineering Sichuan University Chengdu China Sichuan Academy of Economic and Social Development Chengdu China School of Automation Chengdu University of Information Technology Chengdu China

With the continuous development of China's economy and the acceleration of urbanization, the load level of urban power grid is increasing and the peaking pressure is growing year by year. Grid-side energy storage using battery storage technology has the characteristics of fast response, high flexibility and low loss. Based on this, this paper proposes a grid-side energy storage planning considering the urban power grid peaking demand. The method first constructs a multidimensional evaluation system of urban power grid load level according to the evaluation index of urban power grid load level to realize the perception of urban power grid peaking demand, and then establishes the grid-side energy storage planning model and distribution network revenue model, respectively. Finally, simulations are performed in a modified IEEE 14 node system to demonstrate the feasibility of the proposed method.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Continuous Berth Allocation Considering Carbon Emission and Uncertainty 4

Continuous Berth Allocation Considering Carbon Emission and ...

引用

4th International Conference on Data-Driven Optimization of Complex Systems, DOCS 2022

作者： Yu, Feifei Teng, Fei Shan, Qihe Li, Tieshan Xiao, Yang Dalian Maritime University Navigation College Dalian China Dalian Maritime University Marine Electrical Engineering College Dalian China University of Electronic Science and Technology College of Automation Engineering Chengdu China The University of Alabama Department of Computer Science TuscaloosaAL United States

ISBN: (数字)9781665459822

ISBN: (纸本)9781665459822

For port emission reduction, berth allocation is one of the key decisions. This paper tackles a continuous berth allocation problem under the low-carbon target, taking into account the uncertainty of vessels' arrival time and handling time. A bi-level bi-objective model is constructed aiming at minimizing the average carbon emission, together with the range of the carbon emission which is introduced for the improvement of robustness. The objective functions in the model contain another optimization problem, so the model is simplified via a hierarchical optimization method. Then a multi-objective genetic algorithm is designed to solve the model and the validity is demonstrated by a data case. © 2022 IEEE.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Optimal Planning of Integrated Energy Systems for High Proportion of Photovoltaic Consumption

Optimal Planning of Integrated Energy Systems for High Propo...

引用

Power and Energy (PandaFPE), Panda Forum on

作者： Dewei Jiang Shengyong Ye Shuaijia He Hongjun Gao Junyong Liu Jianglin Zhang College of Electrical Engineering Sichuan University Chengdu China Sichuan Academy of Economic and Social Development Chengdu China School of Automation Chengdu University of Information Technology Chengdu China

With the continuous access of distributed PV to the distribution network and the phenomenon of “curtailment of hydro”, in order to absorb the PV and make full use of it, the excess PV can be absorbed through the IES. In order to plan and size the comprehensive energy system economically and reasonably, firstly, the interaction model of multiple energy flow source-charge in the system is modeled, and the interaction nodes between energy flows are defined. Then, considering the objectives of cost and benefit, unit equipment involved in IES planning are constrained and the optimization strategy is selected. Finally, validated the rationality of the optimization model of the IES proposed in this paper is verified by the example of the integrated energy application scenario set up for the specific absorption of photovoltaic energy, which reflects the effectiveness of the IES for the cross-border absorption of photovoltaic energy.

关键词：

来源：评论

学校读者我要写书评

暂无评论

An Adaptive Optimization Method for Rate of Penetration Based on Online Learning

An Adaptive Optimization Method for Rate of Penetration Base...

引用

International Conference on Information Science and technology (ICIST)

作者： Yuanjun Zhou Borui Gu Zhen Cao Jiasheng Hao School of Automation Engineering University of Electronic Science and Technology of China Chengdu Sichuan Province China Glasgow College University of Electronic Science and Technology of China Chengdu Sichuan Province China

In gas drilling operations, the appropriate enhancement of the Rate of Penetration (ROP) significantly contributes to improved drilling efficiency and reduced drilling costs. The core objective of ROP optimization is to identify the most effective combination of drilling parameters that can maximize the ROP to the greatest extent possible. However, conventional optimization algorithms often struggle in real-time optimization and stability due to the varied stratum characteristics, drilling equipment, and the ambiguous relationship between drilling parameters and ROP. In this study, we introduce a high-speed and robust real-time optimization method that meets the demands of global ROP optimization under an array of drilling conditions. More specifically, we leverage the speed and efficiency of the Bayesian optimization algorithm in finding extremum to construct an adaptive optimization model. This model is capable of swiftly recommending the optimal combination of drilling parameters, augmenting its performance through online learning from historical drilling operation data. Our experimental results substantiate that the adaptive model effectively enhances the ROP in drilling operations across diverse well depths and geographical locations.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Perceived Utility of Premium Power by High-tech Manufacturers

引用

Journal of Modern Power Systems and Clean Energy 2020年第2期8卷 287-295页

作者： Yuanqian Ma Xianyong Xiao Yang Wang Ying Wang Zixuan Zheng College of Electrical Engineering and Information Technology Sichuan UniversityChengduChinaand she is also with the Faculty of Mechanical Engineering&AutomationZhejiang Sci-Tech UniversityHangzhouChina College of Electrical Engineering and Information Technology Sichuan UniversityChengduChina

The valuation of premium power based on perceived utility(PU,i.e.,perceived effectiveness or satisfaction degree of customers)and their willingness to pay has been researched for *** of the remaining challenges is the accurate evaluation of *** is the foundation of premium power evaluation,and it is essential for the decision-making process of investments on premium power by high-tech manufacturers(HTMs).This paper presents a framework to effectively evaluate *** this framework,factors influencing PU were classified to be quantitative and *** indication system(IS)was then constructed based on those influencing ***,PU was evaluated by the IS,considering psychological perception and decision-making behavior of *** effectiveness of the proposed PU-evaluation framework was demonstrated through field case studies.

关键词： Premium power voltage sag perceived utility influencing factors indication system

来源：评论

学校读者我要写书评

暂无评论

Fault-Tolerant Containment Control for Multi-UAV Systems Based on ADP

Fault-Tolerant Containment Control for Multi-UAV Systems Bas...

引用

2021 International Conference on Security, Pattern Analysis, and Cybernetics, SPAC 2021

作者： Liu, Qi Shan, Qihe Li, Tieshan Navigation College Dalian Maritime University Dalian China College of Automation Engineering University of Electronic Science and Technology Chengdu China

ISBN: (纸本)9781665443227

This paper deals with the problem of containment control of multi-unmanned aerial vehicle (UAV) systems with actuator faults and energy consumption optimization. First, an containment error system based on the communication information of the agent itself and the neighborhood is established, and the optimal containment control problem can be transformed into the problem of optimal regulation for the containment error system. Meanwhile, the performance function for each follower UAV is introduced. The performance function takes the local neighborhood containment error, the control input of the follower UAV and the neighbor follower UAV as variables. Then, the optimal performance function and the control policies can be approximated by the neural network (NN) based on the adaptive dynamic programming (ADP) policy iteration method, and the nominal controller can be designed for the original fault-free system. Furthermore, in light of the nominal controller, a fault-tolerant controller is designed to compensate the effect of actuator faults on the multi-UAV system. Finally, numerical simulations are given to show the validity of the designed approach. © 2021 IEEE.

关键词： Errors

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：