期刊文献+
共找到5,408篇文章
< 1 2 250 >
每页显示 20 50 100
Learning algorithm and application of quantum BP neural networks based on universal quantum gates 被引量:26
1
作者 Li Panchi Li Shiyong 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2008年第1期167-174,共8页
A quantum BP neural networks model with learning algorithm is proposed. First, based on the universality of single qubit rotation gate and two-qubit controlled-NOT gate, a quantum neuron model is constructed, which is... A quantum BP neural networks model with learning algorithm is proposed. First, based on the universality of single qubit rotation gate and two-qubit controlled-NOT gate, a quantum neuron model is constructed, which is composed of input, phase rotation, aggregation, reversal rotation and output. In this model, the input is described by qubits, and the output is given by the probability of the state in which (1) is observed. The phase rotation and the reversal rotation are performed by the universal quantum gates. Secondly, the quantum BP neural networks model is constructed, in which the output layer and the hide layer are quantum neurons. With the application of the gradient descent algorithm, a learning algorithm of the model is proposed, and the continuity of the model is proved. It is shown that this model and algorithm are superior to the conventional BP networks in three aspects: convergence speed, convergence rate and robustness, by two application examples of pattern recognition and function approximation. 展开更多
关键词 quantum computing universal quantum gate quantum neuron quantum neural networks
在线阅读 下载PDF
Research on the Optimization Path of Network Ideological and Political Education in Colleges and Universities in Xinjiang
2
作者 Xuemei Tan 《Journal of Contemporary Educational Research》 2025年第10期398-407,共10页
The Report of the 20th National Congress of the Communist Party of China explicitly emphasized the promotion of educational digitalization.The rapid development of new media in the era of network information has not o... The Report of the 20th National Congress of the Communist Party of China explicitly emphasized the promotion of educational digitalization.The rapid development of new media in the era of network information has not only broadened the horizons of college students but also profoundly transformed the content and methods of ideological and political education.As the frontline of ideological work,colleges and universities in Xinjiang are guided by the Party’s strategy for governing Xinjiang in the new era to advance network ideological and political education.This is of great significance in guiding students to develop correct network literacy and promoting ideological and political education to keep pace with the times.Through methods such as text analysis,questionnaire surveys,and interviews,this paper outlines the concept,characteristics,and value of network ideological and political education in colleges and universities in Xinjiang,analyzes its current development status and existing issues,and proposes optimization paths such as adhering to correct political guidance,highlighting regional characteristics,innovating educational methods,and strengthening subject construction.These efforts aim to fulfill the fundamental task of“cultivating talents with moral integrity”and serve the overall goal of social stability and long-term peace in Xinjiang. 展开更多
关键词 Colleges and universities in Xinjiang network ideological and political education Optimization path Digital education Ideological security
在线阅读 下载PDF
INFORMATION DESIGN OF UNIVERSAL ADJUSTMENT PROGRAM OF PLANE CONTROL NETWORKS
3
作者 Xiang,Nanping(Department of Resources Exploitation Engineering,Central South University of Technology,Changsha 410083) 《中国有色金属学会会刊:英文版》 CSCD 1994年第2期95-97,102,共4页
INFORMATIONDESIGNOFUNIVERSALADJUSTMENTPROGRAMOFPLANECONTROLNETWORKSINFORMATIONDESIGNOFUNIVERSALADJUSTMENTPRO... INFORMATIONDESIGNOFUNIVERSALADJUSTMENTPROGRAMOFPLANECONTROLNETWORKSINFORMATIONDESIGNOFUNIVERSALADJUSTMENTPROGRAMOFPLANECONTRO... 展开更多
关键词 INFORMATION design universal adjustment PLANE CONTROL networkS
在线阅读 下载PDF
Charging Rate, Imposing and Allowancing Range of Universal Service Fund for Network Industries
4
作者 Bo Xu Zhongyi Zhao 《Chinese Business Review》 2003年第5期42-49,共8页
Universal service obligation of network industries, such as telecommunication, electric power, post, railway, and aviation, has greatly hampered the progress of their marketization reform. Establishing universal servi... Universal service obligation of network industries, such as telecommunication, electric power, post, railway, and aviation, has greatly hampered the progress of their marketization reform. Establishing universal service fund could be an efficient solution. This paper provides a method to calculate the charging rate, imposing and allowancing range of universal service fund for network industries, it also proves the feasibility of accomplishing universal service through universal service fund in network industries. 展开更多
关键词 universal service fund industry network
在线阅读 下载PDF
Estimation of fracture size and azimuth in the universal elliptical disc model based on trace information 被引量:3
5
作者 Jichao Guo Jun Zheng +1 位作者 Qing Lü Jianhui Deng 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2023年第6期1391-1405,共15页
The geometric characteristics of fractures within a rock mass can be inferred by the data sampling from boreholes or exposed surfaces.Recently,the universal elliptical disc(UED)model was developed to represent natural... The geometric characteristics of fractures within a rock mass can be inferred by the data sampling from boreholes or exposed surfaces.Recently,the universal elliptical disc(UED)model was developed to represent natural fractures,where the fracture is assumed to be an elliptical disc and the fracture orientation,rotation angle,length of the long axis and ratio of short-long axis lengths are considered as variables.This paper aims to estimate the fracture size-and azimuth-related parameters in the UED model based on the trace information from sampling windows.The stereological relationship between the trace length,size-and azimuth-related parameters of the UED model was established,and the formulae of the mean value and standard deviation of trace length were proposed.The proposed formulae were validated via the Monte Carlo simulations with less than 5%of error rate between the calculated and true values.With respect to the estimation of the size-and azimuth-related parameters using the trace length,an optimization method was developed based on the pre-assumed size and azimuth distribution forms.A hypothetical case study was designed to illustrate and verify the parameter estimation method,where three combinations of the sampling windows were used to estimate the parameters,and the results showed that the estimated values could agree well with the true values.Furthermore,a hypothetical three-dimensional(3D)elliptical fracture network was constructed,and the circular disc,non-UED and UED models were used to represent it.The simulated trace information from different models was compared,and the results clearly illustrated the superiority of the proposed UED model over the existing circular disc and non-UED models。 展开更多
关键词 universal elliptical disc(UED)model Rock mass Discrete fracture network(DFN) Optimization algorithm Inverse problem
在线阅读 下载PDF
Secure Remote Access IPSEC Virtual Private Network to University Network System 被引量:1
6
作者 Gajendra Sharma 《Journal of Computer Science Research》 2021年第1期16-27,共12页
With the popularity of the Internet and improvement of information technology,digital information sharing increasingly becomes the trend.More and More universities pay attention to the digital campus,and the construct... With the popularity of the Internet and improvement of information technology,digital information sharing increasingly becomes the trend.More and More universities pay attention to the digital campus,and the construction of digital library has become the focus of digital campus.A set of manageable,authenticated and secure solutions are needed for remote access to make the campus network be a transit point for the outside users.Remote Access IPSEC Virtual Private Network gives the solution of remote access to e-library resources,networks resources and so on very safely through a public network.It establishes a safe and stable tunnel which encrypts the data passing through it with robust secured algorithms.It is to establish a virtual private network in Internet,so that the two long-distance network users can transmit data to each other in a dedicated network channel.Using this technology,multi-network campus can communicate securely in the unreliable public internet. 展开更多
关键词 IPSEC VPN network Communication Data ENCRYPTION Integrity authentication Remote access universITY Security Server CLIENT PEER
在线阅读 下载PDF
Analytical Investigation on Computer Network Security System of Colleges and Universities
7
作者 徐悦 《电脑知识与技术(过刊)》 2013年第1X期266-268,共3页
With the development of network technology,computer systems of colleges and universities gradually use network management and services,which provides comprehensive and convenient information access and management cond... With the development of network technology,computer systems of colleges and universities gradually use network management and services,which provides comprehensive and convenient information access and management conditions.How ever,in the network environment,the security of the system faces security threats like virus,malicious software and human at tack,which may make the network data of the computer system damaged and tampered,or even lead to network system paraly sis,breakdown of system concerning management and payment,missing and stealing of confidential documents.Therefore,it is of important application significance to promote the security of computer network systems of colleges and universities.This paper conducts comprehensive analysis on the security system of computer network systems of colleges and universities,elaborates its R&D and application status and puts forward specific schemes of prevention and solutions,which provides suggestions and refer ence for its construction. 展开更多
关键词 Colleges and universities Computer network Security System PREVENTION
在线阅读 下载PDF
Evolution Characteristics of Government-Industry-University Cooperative Innovation Network of Electronic Information Industry in Liaoning Province, China 被引量:10
8
作者 PENG Fei ZHANG Qiqi +2 位作者 HAN Zenglin DING Yan FU Ningning 《Chinese Geographical Science》 SCIE CSCD 2019年第3期528-540,共13页
It is important to optimize the cooperative innovation network for the improvement of economic competence and innovative power. Based on the patent information services platform, we obtain invention patent data for th... It is important to optimize the cooperative innovation network for the improvement of economic competence and innovative power. Based on the patent information services platform, we obtain invention patent data for the electronic information industry in Liaoning from 1985 to 2015. This paper analyzes the cooperative innovation network structure, its spatiotemporal evolution and the triple helix relationship of government-industry-university(GIU) by using the social network analysis method and the triple helix theory as well as UCINet, ArcGIS and NetDraw. The empirical results show that: 1) the number of the subjects of the electronic information industry GIU cooperative innovation network in Liaoning demonstrates a gradual increase from 1985 to 2015, with the same trend in concentration. In terms of its subject and its centrality, the universities have a higher position, and the industries have a lower position,while the status of the government is still unclear. 2) The cooperative innovation network presents a core-periphery structure, and the polarization effect of innovation subjects tends to be obvious. There is certain distance-decay regularity in the cooperative innovation network, and a strong geographical proximity to cooperative innovation. 3) The compactness shows a downward trend as a whole. In terms of the extent of participation, the industries are better than the government but worse than the universities. This means that the cooperative innovation network of GIU in the electronic information industry in Liaoning is in the initial stage of formation. 展开更多
关键词 government-industry-university (GIU) COOPERATIVE innovation network triple HELIX electronic information INDUSTRY Liaoning Province
在线阅读 下载PDF
Design of Energy Saving Lighting System in University Classroom Based on Wireless Sensor Network
9
作者 Yu Liang Ruihua Zhang +1 位作者 Wei Wang Caiqing Xiao 《Communications and Network》 2013年第1期55-60,共6页
In order to reach the objective of intelligence and energy saving for university classroom lighting, energy saving lighting control system in university classroom based on wireless sensor network is designed, includin... In order to reach the objective of intelligence and energy saving for university classroom lighting, energy saving lighting control system in university classroom based on wireless sensor network is designed, including design of sensor node and sink, as well as corresponding development of control program and upper-computer software. The system sets single-chip Ameg16 as control center, realizes communication between nodes via nRF24L01 wireless transceiver module, and realizes communication between sink and upper computer via w5100 wireless internet module. It perceives illumination intensity via photoconductor, detects the human body position via infrared pyroelectric sensor, and places the sensor node on the lamp, so the light can be controlled according to position of human body and current illumination intensity, which can realize energy saving to a large extent on condition that lighting requirement is satisfied. The system has low cost, and there is no need to change the original lighting circuit. The light can be turned off by hand, and when multi-media are used for the class, light can keep off even it is dim. In addition, this system has the function of automatic fault report, which is convenient for property maintenance. 展开更多
关键词 Wireless SENSOR network Infrared PYROELECTRIC SENSOR Energy SAVING LIGHTING System in university CLASSROOM
暂未订购
A Universal Activation Function for Deep Learning
10
作者 Seung-Yeon Hwang Jeong-Joon Kim 《Computers, Materials & Continua》 SCIE EI 2023年第5期3553-3569,共17页
Recently,deep learning has achieved remarkable results in fields that require human cognitive ability,learning ability,and reasoning ability.Activation functions are very important because they provide the ability of ... Recently,deep learning has achieved remarkable results in fields that require human cognitive ability,learning ability,and reasoning ability.Activation functions are very important because they provide the ability of artificial neural networks to learn complex patterns through nonlinearity.Various activation functions are being studied to solve problems such as vanishing gradients and dying nodes that may occur in the deep learning process.However,it takes a lot of time and effort for researchers to use the existing activation function in their research.Therefore,in this paper,we propose a universal activation function(UA)so that researchers can easily create and apply various activation functions and improve the performance of neural networks.UA can generate new types of activation functions as well as functions like traditional activation functions by properly adjusting three hyperparameters.The famous Convolutional Neural Network(CNN)and benchmark datasetwere used to evaluate the experimental performance of the UA proposed in this study.We compared the performance of the artificial neural network to which the traditional activation function is applied and the artificial neural network to which theUA is applied.In addition,we evaluated the performance of the new activation function generated by adjusting the hyperparameters of theUA.The experimental performance evaluation results showed that the classification performance of CNNs improved by up to 5%through the UA,although most of them showed similar performance to the traditional activation function. 展开更多
关键词 Deep learning activation function convolutional neural network benchmark datasets universal activation function
在线阅读 下载PDF
Students'Political Belief Education in Agricultural and Forestry Colleges and Universities in Network Environment:Taking Northwest A&F University as an Example
11
作者 Long RAN 《Asian Agricultural Research》 2020年第4期60-61,64,共3页
The influence of the network environment on the education of political beliefs of college students in China cannot be ignored.Taking Northwest A&F University as an example,starting from the current situation of st... The influence of the network environment on the education of political beliefs of college students in China cannot be ignored.Taking Northwest A&F University as an example,starting from the current situation of students'political belief education in agricultural and forestry colleges and universities,the impact of network environment on the education of political beliefs of students in agricultural and forestry colleges and universities was analyzed,and the implementation path of improving political belief education in the network environment was explored,in order to provide a reference for improving the effectiveness of ideological and political education of students in agricultural and forestry colleges and universities. 展开更多
关键词 network environment AGRICULTURAL and FORESTRY COLLEGES and universities Political BELIEF education for college STUDENTS
在线阅读 下载PDF
Human Observation-Inspired Universal Image Acquisition Paradigm Integrating Multi-Objective Motion Planning and Control for Robotics
12
作者 Haotian Liu Yuchuang Tong Zhengtao Zhang 《IEEE/CAA Journal of Automatica Sinica》 CSCD 2024年第12期2463-2475,共13页
Image acquisition stands as a prerequisite for scrutinizing surfaces inspection in industrial high-end manufacturing.Current imaging systems often exhibit inflexibility,being confined to specific objects and encounter... Image acquisition stands as a prerequisite for scrutinizing surfaces inspection in industrial high-end manufacturing.Current imaging systems often exhibit inflexibility,being confined to specific objects and encountering difficulties with diverse industrial structures lacking standardized computer-aided design(CAD)models or in instances of deformation.Inspired by the multidimensional observation of humans,our study introduces a universal image acquisition paradigm tailored for robotics,seamlessly integrating multi-objective optimization trajectory planning and control scheme to harness measured point clouds for versatile,efficient,and highly accurate image acquisition across diverse structures and scenarios.Specifically,we introduce an energybased adaptive trajectory optimization(EBATO)method that combines deformation and deviation with dual-threshold optimization and adaptive weight adjustment to improve the smoothness and accuracy of imaging trajectory and posture.Additionally,a multi-optimization control scheme based on a meta-heuristic beetle antennal olfactory recurrent neural network(BAORNN)is proposed to track the imaging trajectory while addressing posture,obstacle avoidance,and physical constraints in industrial scenarios.Simulations,real-world experiments,and comparisons demonstrate the effectiveness and practicality of the proposed paradigm. 展开更多
关键词 Industrial robotics human observation-inspired meta-heuristic recurrent neural network motion planning and control universal image acquisition
在线阅读 下载PDF
Discussion on Network Classroom Teaching of the Meteorology and Climatology in Common Colleges and Universities
13
作者 Zhanming LIU 《Meteorological and Environmental Research》 CAS 2020年第5期135-136,共2页
Most of the content of the course Meteorology and Climatology in common colleges and universities is what students are interested in,and most students have been exposed to or understood many contents.When studying thi... Most of the content of the course Meteorology and Climatology in common colleges and universities is what students are interested in,and most students have been exposed to or understood many contents.When studying this part of the content,students often show varying degrees of interest.Of course,each student s own situation is different.In classroom teaching,teachers should comprehensively consider various factors.Especially in the network classroom teaching situation,teachers should combine the learning content to use multi platform teaching in the teaching,students performance to flexibly carry out interaction between teachers and students,and students own situation to pay attention to individualized cultivation. 展开更多
关键词 network classroom teaching in colleges and universities Cultivation of individualization DISCUSSION Meteorology and climatology
在线阅读 下载PDF
Study on the Research and Application of Network Teaching Courseware in Aerobics in Colleges and Universities
14
作者 Xiangxin Meng Huanxiang Ding +1 位作者 Yongjun Zhao Xueqin Zhuang 《International English Education Research》 2014年第11期41-45,共5页
Aerobics teaching in colleges and universities is the most important part of higher education, and the important means to carry out quality-oriented education and cultivate all-round developed talents. The reform of a... Aerobics teaching in colleges and universities is the most important part of higher education, and the important means to carry out quality-oriented education and cultivate all-round developed talents. The reform of aerobics teaching in colleges and universities should be geared to the demands of the times, and explore new innovation and continual development. In this paper, using the research methods of documentation, courseware development, teaching experiment and mathematical statistics, we study on the making and application of college aerobics network teaching courseware. It is revealed that, with the combination of modem network technology and college aerobics teaching, the resulted college aerobics network teaching courseware is the important media to not only upgrades college aerobics teaching quality, but also help develop students' habits of doing physical exercise, and promote physical health. Therefore, this is meaningful and practical in promoting the education of college students in physical quality development. 展开更多
关键词 Colleges and universities Aerobics the network Teaching Courseware Prepare Test Application
在线阅读 下载PDF
Investigation and Analysis on the Status Quo of College Students’Network Entrepreneurship in Private University
15
作者 Shaohong Chen Chao Zhang Lingling Dai 《Journal of Contemporary Educational Research》 2022年第8期81-90,共10页
This year,the number college graduates in China surpassed tens of millions for the first time.The employment rate of fresh graduates has been concerning.In view of this,network entrepreneurship has become an important... This year,the number college graduates in China surpassed tens of millions for the first time.The employment rate of fresh graduates has been concerning.In view of this,network entrepreneurship has become an important channel and platform to solve the problem of college students’employment.The government,society and universities has been actively encouraging college students'network entrepreneurship as the value of college students'network entrepreneurship is significant.This paper analyzes the current situation of college students'network entrepreneurship and the problems faced through the survey data and thus suggests corresponding countermeasures. 展开更多
关键词 Private university College students network entrepreneurship Suggestions
在线阅读 下载PDF
Research on University Network Security from the Perspective of Big Data
16
作者 LINWei CHENYe +1 位作者 LILin WANGWei 《外文科技期刊数据库(文摘版)教育科学》 2022年第3期124-127,共4页
New technologies, such as 5G, AI and cloud computing, are pushing forward the fourth industrial revolution, pushing forward the digital transformation of university management, and remarkable achievements have been ma... New technologies, such as 5G, AI and cloud computing, are pushing forward the fourth industrial revolution, pushing forward the digital transformation of university management, and remarkable achievements have been made in university information construction. With the continuous development of big data, university network security has also become a major concern. Therefore, this paper first introduces the characteristics of university network from the perspective of big data, and then introduces the security risks of university network from the perspective of big data, which can provide the corresponding solutions to these problems. 展开更多
关键词 big data perspective universITIES network security
在线阅读 下载PDF
基于Helix Universal Server的网络电台的设计与实现
17
作者 黄远辉 《电脑知识与技术》 2006年第12X期46-48,共3页
本文分析了网络电台的技术构成,从流媒体电台与电台网站两个方面分析整个网络电台的系统构成与设计,最后主要介绍基于Helix Universal Server的网络电台所用到的各种直播技术。
关键词 Helix universal Server ASP.net 流媒体 SMIL 网络电台
在线阅读 下载PDF
Challenges and Measures of Ideological and Political Work in Colleges and Universities in the Network Era
18
作者 Na Xu Miao Liu 《Journal of Contemporary Educational Research》 2021年第4期5-8,共4页
To explore the challenges faced by the ideological and political work in Colleges and universities in the network era,this paper expounds the problems in the ideological and political work in Colleges and universities... To explore the challenges faced by the ideological and political work in Colleges and universities in the network era,this paper expounds the problems in the ideological and political work in Colleges and universities in the network era by reading literature and combining with theoretical knowledge,and puts forward solutions according to the problems for the reference of relevant personnel. 展开更多
关键词 network era Ideological and political education in Colleges and universities CHALLENGE
在线阅读 下载PDF
Online Ideological and Political Education in Colleges and Universities Under the Weibo Network Environment
19
作者 Jianping He Darui Jiang 《Journal of Contemporary Educational Research》 2022年第1期79-82,共4页
In recent years,the in-depth development of quality education has brought opportunities for the innovation and reform of ideological and political education in colleges and universities in China.Online ideological and... In recent years,the in-depth development of quality education has brought opportunities for the innovation and reform of ideological and political education in colleges and universities in China.Online ideological and political education,as a modern embodiment of ideological and political education,is planned and carried out purposefully under the Weibo network environment,which is more conducive to breaking the distance between time and space and presenting high-quality educational content to students.In view of this,this article will focus on the development of online ideological and political education under the Weibo network environment,consider the existing problems,and propose specific countermeasures to improve the level of online ideological and political education in colleges and universities. 展开更多
关键词 Weibo network environment Online ideological and political education College and university education
在线阅读 下载PDF
REANN 2.0:An Efficient Package of Neural Network Potentials for Multi-Element Systems
20
作者 Yixi Zhang Junfan Xia +1 位作者 Yaolong Zhang Bin Jiang 《Chinese Journal of Chemical Physics》 2025年第6期797-806,I0238,共11页
Recursively embedded atom neural network(REANN)is a general-purpose atomistic machine learning software package for representing potential energy and other physical properties.The original REANN 1.0 architecture is a ... Recursively embedded atom neural network(REANN)is a general-purpose atomistic machine learning software package for representing potential energy and other physical properties.The original REANN 1.0 architecture is a physically inspired invariant message passing neural network,which was designed for systems with a limited number of elements.It is efficient but hardly transferable to more complex multi-element systems.In this work,we release REANN 2.0 aimed at multi-element systems and universal potentials,which integrates element embedding and equivariant representation.Compared to the first version,REANN 2.0 demonstrates enhanced ele-ment transferability and higher accuracy across various periodic systems with higher efficiency.Built upon this framework,a pre-trained REANN-MPtrj model without fine-tuning accurately predicts the lithium-ion diffusion dynamics in a benchmark solid-state electrolyte Li_(3)YCl_(6).We hope this open-source software package will facilitate the development of computationally efficient universal potentials in the future. 展开更多
关键词 Machine learning potential Message passing neural network universal machine learning potential Molecular dynamics
在线阅读 下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部