期刊文献+
共找到4,362篇文章
< 1 2 219 >
每页显示 20 50 100
Network analysis using organizational risk analyzer 被引量:2
1
作者 Chen, Xiaodong Li, Jianfeng Huang, Yanbo 《Journal of Southeast University(English Edition)》 EI CAS 2008年第S1期104-108,共5页
The tool system of the organizational risk analyzer (ORA) to study the network of East Turkistan terrorists is selected. The model of the relationships among its personnel, knowledge, resources and task entities is re... The tool system of the organizational risk analyzer (ORA) to study the network of East Turkistan terrorists is selected. The model of the relationships among its personnel, knowledge, resources and task entities is represented by the meta-matrix in ORA, with which to analyze the risks and vulnerabilities of organizational structure quantitatively, and obtain the last vulnerabilities and risks of the organization. Case study in this system shows that it should be a shortcut to destroy effectively the network of terrorists by recognizing the caucus persons of the terrorism organization for the first and eliminating them when strikes the terror organization. It is vital to ensure effective use of the resources and control the risks of terrorist attacks. 展开更多
关键词 dynamic network analysis meta-matrix organization risk
在线阅读 下载PDF
One-pot in situ doping synthesis of phenylboronic acid-functionalized magnetic-cyclodextrin microporous organic network for specific enrichment and detection of sulfonylurea herbicides
2
作者 Chun-Ying Xu Xiao-Lin Luan +1 位作者 Yuan-Yuan Cui Cheng-Xiong Yang 《Chinese Chemical Letters》 2025年第9期524-528,共5页
Microporous organic networks(MONs)are attractive adsorbents for use in sample pretreatment owning to their unique structure and properties.However,methods for constructing functional MONs are still limited because the... Microporous organic networks(MONs)are attractive adsorbents for use in sample pretreatment owning to their unique structure and properties.However,methods for constructing functional MONs are still limited because the lack of monomers via direct synthesis and their complex procedures via postmodification.To address this issue,a facile one-pot in situ doping strategy was proposed herein for synthesis a novel phenylboronic acid-functionalized magnetic cyclodextrin-based microporous organic network([PBA]_(3/4)-MCD-MON-0.04).[PBA]_(3/4)MCD-MON-0.04 was used for the selective and efficient extraction of sulfonylurea herbicides(SUHs)from complex food and environmental water samples via the synergistic hydrogen bonding,host-vip,hydrophobic andπ-πinteractions and the specific B-N coordination.[PBA]_(3/4)-MCD-MON-0.04 had a large surface area,high saturation magnetism,good reusability,and remarkable stability.A rapid,sensitive,and selective method was proposed for monitoring SUHs from diverse matrices.This study provides a new strategy for synthesizing novel and multifunctional magnetic CD-MONs-based adsorbents and reveals the considerable potential of CD-MONs in sample pretreatment. 展开更多
关键词 Cyclodextrin microporous organic network Magnetic solid phase extraction In situ doping Sulfonylurea herbicide B-N coordination
原文传递
Self-organized Critical Model Based on Complex Brain Networks with Hierarchical Organization
3
作者 ZHANG Ying-Yue ZHANG Gui-Qing YANG Qiu-Ying CHEN Tian-Lun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第9期681-684,共4页
The dynamical behavior in the cortical brain network of macaque is studied by modelling each cortical areawith a subnetwork of interacting excitable neurons.We find that the avalanche of our model on different levels ... The dynamical behavior in the cortical brain network of macaque is studied by modelling each cortical areawith a subnetwork of interacting excitable neurons.We find that the avalanche of our model on different levels exhibitspower-law.Furthermore the power-law exponent of the distribution and the average avalanche size are affected by thetopology of the network. 展开更多
关键词 self-organized criticality hierarchical organization POWER-LAW cortical network refractory-period
在线阅读 下载PDF
Sleeping of a Complex Brain Networks with Hierarchical Organization
4
作者 ZHANG Ying-Yue YANG Qiu-Ying CHEN Tian-Lun 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第1期97-100,共4页
The dynamical behavior in the cortical brain network of macaque is studied by modeling each cortical area with a subnetwork of interacting excitable neurons. We characterize the system by studying how to perform the t... The dynamical behavior in the cortical brain network of macaque is studied by modeling each cortical area with a subnetwork of interacting excitable neurons. We characterize the system by studying how to perform the transition, which is now topology-dependent, from the active state to that with no activity. This could be a naive model for the wakening and sleeping of a brain-like system, i.e., a multi-component system with two different dynamical behavior. 展开更多
关键词 self-organized criticality hierarchical organization EEG-like wave cortical network SLEEPING
在线阅读 下载PDF
A New Algorithm of Self Organization in Wireless Sensor Network 被引量:2
5
作者 Hemanta Kumar KALITA Avijit KAR 《Wireless Sensor Network》 2010年第1期43-47,共5页
Self organization is one of the most important characteristics in an Ad-hoc Sensor Network. Thousands of Sensors are deployed in a geographical area randomly without considering the location factor. After deployment, ... Self organization is one of the most important characteristics in an Ad-hoc Sensor Network. Thousands of Sensors are deployed in a geographical area randomly without considering the location factor. After deployment, sensors are to self organize themselves to form a network of their own. How well the network is formed determines the life of the whole network as well as the quality of data transmission. Self organization based on clustering has proven to be very useful in this regard. Since hierarchical clustering reduces energy consumption by routing data from one node to another. In this paper, we discuss a new algorithm for self organization of sensors deployed in a geographical area. The algorithm forms clusters of sensors by ordering them using a unique triangulation method. This algorithm not only considers all sensors but also groups them so that their inherent clustering property is preserved. 展开更多
关键词 SELF-organization WIRELESS SENSOR network OPTICS
暂未订购
Improve Fractal Compression Encoding Speed Using Feature Extraction and Self-organization Network 被引量:1
6
作者 Berthe Kya, Yang Yang Information Engineering School. University of Science and Technology Beijing. Beijing 100083. China 《Journal of University of Science and Technology Beijing》 CSCD 2001年第4期306-310,共5页
Image compression consists of two main parts: encoding and decoding. One of the important problems of the fractal theory is the long encoding implementation time, which hindered the acceptance of fractal image compres... Image compression consists of two main parts: encoding and decoding. One of the important problems of the fractal theory is the long encoding implementation time, which hindered the acceptance of fractal image compression as a practical method. The long encoding time results from the need to perform a large number of domain-range matches, the total encoding time is the product of the number of matches and the time to perform each match. In order to improve encoding speed, a hybrid method combining features extraction and self-organization network has been provided, which is based on the feature extraction approach the comparison pixels by pixels between the feature of range blocks and domains blocks. The efficiency of the new method was been proved by examples. 展开更多
关键词 image compression fractal theory features extraction self-organization network fractal encoding
在线阅读 下载PDF
The Preliminary Study on the Performance Appraisement about the Logistics Network Organization
7
作者 Weiwei Qin Jie Xu 《Chinese Business Review》 2005年第4期27-30,共4页
How the performance in the course of implementing the logistics network organization is,and how the benefit level is produced,are undoubtedly focuses that cooperative parties pay close attention to,and the key to the ... How the performance in the course of implementing the logistics network organization is,and how the benefit level is produced,are undoubtedly focuses that cooperative parties pay close attention to,and the key to the network organization,too.The research on the performance appraisement about the network organization is not only very necessary,but also very important.This paper describes the characteristics of the performance appraisement about the logistics network organization,and sets up the evaluation index through analyzing the principle of constituting the logistics network organization's performance index system. 展开更多
关键词 the logistics network organization the performance appraisement an index system the appraisement method
在线阅读 下载PDF
A realistic model for complex networks with local interaction, self-organization and order
8
作者 陈飞 陈增强 袁著祉 《Chinese Physics B》 SCIE EI CAS CSCD 2007年第2期287-291,共5页
In this paper, a new mechanism for the emergence of scale-free distribution is proposed. It is more realistic than the existing mechanism. Based on our mechanism, a model responsible for the scale-free distribution wi... In this paper, a new mechanism for the emergence of scale-free distribution is proposed. It is more realistic than the existing mechanism. Based on our mechanism, a model responsible for the scale-free distribution with an exponent in a range of 3-to-5 is given. Moreover, this model could also reproduce the exponential distribution that is discovered in some real networks. Finally, the analytical result of the model is given and the simulation shows the validity of our result, 展开更多
关键词 local interaction SELF-organization order complex network
原文传递
A Study on the Evolution of Labor Self-Organizations and the Design of Governmental Mechanism from A Complex Network Perspective
9
作者 Xu Qingqing Lu Lan +1 位作者 Liu Pengcheng Yi Xin 《Contemporary Social Sciences》 2019年第4期143-155,共13页
Self-organization theory informs an analysis on the evolution of labor self-organizations (LSOs), but lacks technical analysis on the evolution of their organizational structures. Fortunately, complex network technolo... Self-organization theory informs an analysis on the evolution of labor self-organizations (LSOs), but lacks technical analysis on the evolution of their organizational structures. Fortunately, complex network technology offers a new approach to analyzing these structures. Built on an extension of the Barabási-Albert (BA) model, we can simulate the evolution of LSOs by analyzing indicators including the clustering coefficient, degree distribution (DD) and average path length (APL) of workers, thereby demonstrating the evolving patterns of LSOs. Accordingly, governmental mechanism designs based on such patterns may not only stimulate energy growth and functional realization of LSOs, but also reduce the social percussions of abrupt evolutions. A comparative analysis of the evolutionary trajectories of LSOs in China and the U.S. finds that the U.S. government’s mechanism designs for protecting capitalism not only prevented the effective gathering of workers, but also prolonged the history of industrial conflicts. Such mechanism designs also led to the early dispersion and decline of LSOs and hindered the evolution of the working class. In contrast, the Chinese government established a socialist system that allowed workers to become the underlying force of socialist productivity. This design reduced labor strife while accelerating the evolution of workers towards higher stages. 展开更多
关键词 Complex networks (CNs) SELF-organization EVOLUTION mechanism DESIGN
在线阅读 下载PDF
A LOCAL DYNAMIC CLUSTER SELF-ORGANIZATION ALGORITHM IN WIRELESS SENSOR NETWORKS FOR RAINFALL MONITORING
10
作者 Wang Huibin Xu Lizhong +2 位作者 Xiao Xianjian Fan Tanghuai Xu Feng 《Journal of Electronics(China)》 2010年第2期279-288,共10页
Wireless Sensor Networks for Rainfall Monitoring (RM-WSNs) is a sensor network for the large-scale regional and moving rainfall monitoring,which could be controlled deployment. Delivery delay and cross-cluster calcula... Wireless Sensor Networks for Rainfall Monitoring (RM-WSNs) is a sensor network for the large-scale regional and moving rainfall monitoring,which could be controlled deployment. Delivery delay and cross-cluster calculation leads to information inaccuracy by the existing dynamic collabo-rative self-organization algorithm in WSNs. In this letter,a Local Dynamic Cluster Self-organization algorithm (LDCS) is proposed for the large-scale regional and moving target monitoring in RM-WSNs. The algorithm utilizes the resource-rich node in WSNs as the cluster head,which processes target information obtained by sensor nodes in cluster. The cluster head shifts with the target moving in chance and re-groups a new cluster. The target information acquisition is limited in the dynamic cluster,which can reduce information across-clusters transfer delay and improve the real-time of information acquisition. The simulation results show that,LDCS can not only relieve the problem of "too frequent leader switches" in IDSQ,also make full use of the history monitoring information of target and con-tinuous monitoring of sensor nodes that failed in DCS. 展开更多
关键词 Wireless Sensor networks (WSNs) Rainfall Monitoring (RM) SELF-organization Local dynamic cluster
在线阅读 下载PDF
Clustering Algorithm of Quantum Self-Organization Network
11
作者 Ziyang Li Panchi Li 《Open Journal of Applied Sciences》 2015年第6期270-278,共9页
To enhance the clustering ability of self-organization network, this paper introduces a quantum inspired self-organization clustering algorithm. First, the clustering samples and the weight values in the competitive l... To enhance the clustering ability of self-organization network, this paper introduces a quantum inspired self-organization clustering algorithm. First, the clustering samples and the weight values in the competitive layer are mapped to the qubits on the Bloch sphere, and then, the winning node is obtained by computing the spherical distance between sample and weight value. Finally, the weight values of the winning nodes and its neighborhood are updated by rotating them to the sample on the Bloch sphere until the convergence. The clustering results of IRIS sample show that the proposed approach is obviously superior to the classical self-organization network and the K-mean clustering algorithm. 展开更多
关键词 QUANTUM BITS BLOCH Spherical Rotation SELF-organization network Clustering Algorithm
在线阅读 下载PDF
COUPLING MODEL OF EXTENDED MANUFACTURING ORGANIZATION AND ITS APPLICATION 被引量:1
12
作者 郭宇 安波 廖文和 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2011年第1期137-144,共8页
For the feature of complex weapon manufacturing on internet,a coupling model is proposed.By using the model,the correlation between manufacturing cells in an extended manufacturing organization can be evaluated quanti... For the feature of complex weapon manufacturing on internet,a coupling model is proposed.By using the model,the correlation between manufacturing cells in an extended manufacturing organization can be evaluated quantitatively,so an appropriate control plan is determined.A strategy to improve and reduce the coupling relationship of the organization is studied.A correlation matrix of extended tasks is built to analyze the relationship between sub-tasks and manufacturing resources.An optimization method for manufacturing resource configuration is presented based on the coupling model.Finally,a software system for analyzing coupling model about manufacturing organization on internet is developed,and the result shows that the coupling model is effective. 展开更多
关键词 networked manufacturing manufacturing organization correlation matrix coupling model
在线阅读 下载PDF
From non-obese diabetic to Network for the Pancreatic Organ Donor with Diabetes: New heights in type 1 diabetes research 被引量:1
13
作者 Lourdes Ramirez Abdel Rahim A Hamad 《World Journal of Diabetes》 SCIE CAS 2015年第16期1309-1311,共3页
Since the discovery of therapeutic insulin in 1922 and the development of the non-obese diabetic spontaneous mouse model in 1980,the establishment of Network for Pancreatic Organ Donor with Diabetes(n POD) in 2007 is ... Since the discovery of therapeutic insulin in 1922 and the development of the non-obese diabetic spontaneous mouse model in 1980,the establishment of Network for Pancreatic Organ Donor with Diabetes(n POD) in 2007 is arguably the most important milestone step in advancing type 1 diabetes(T1D) research. In this perspective,we briefly describe how n POD is transforming T1 D research via procuring and coordinating analysis of disease pathogenesis directly in human organs donated by deceased diabetic and control subjects. The successful precedent set up by n POD is likely to spread far beyond the confines of research in T1 D to revolutionize biomedical research of other disease using high quality procured human cells and tissues. 展开更多
关键词 TYPE 1 DIABETES network for the PANCREATIC organ D
暂未订购
Spatial prediction of soil organic carbon in coal mining subsidence areas based on RBF neural network 被引量:4
14
作者 Qiangqiang Qi Xin Yue +2 位作者 Xin Duo Zhanjun Xu Zhe Li 《International Journal of Coal Science & Technology》 EI CAS CSCD 2023年第2期218-230,共13页
A quantitative research on the effect of coal mining on the soil organic carbon(SOC)pool at regional scale is beneficial to the scientific management of SOC pools in coal mining areas and the realization of coal low-c... A quantitative research on the effect of coal mining on the soil organic carbon(SOC)pool at regional scale is beneficial to the scientific management of SOC pools in coal mining areas and the realization of coal low-carbon mining.Moreover,the spatial prediction model of SOC content suitable for coal mining subsidence area is a scientific problem that must be solved.Tak-ing the Changhe River Basin of Jincheng City,Shanxi Province,China,as the study area,this paper proposed a radial basis function neural network model combined with the ordinary kriging method.The model includes topography and vegetation factors,which have large influence on soil properties in mining areas,as input parameters to predict the spatial distribution of SOC in the 0-20 and 2040 cm soil layers of the study area.And comparing the prediction effect with the direct kriging method,the results show that the mean error,the mean absolute error and the root mean square error between the predicted and measured values of SOC content predicted by the radial basis function neural network are lower than those obtained by the direct kriging method.Based on the fitting effect of the predicted and measured values,the R^(2) obtained by the radial basis artificial neural network are 0.81,0.70,respectively,higher than the value of 0.44 and 0.36 obtained by the direct kriging method.Therefore,the model combining the artificial neural network and kriging,and considering environmental factors can improve the prediction accuracy of the SOC content in mining areas. 展开更多
关键词 Mining area Soil organic carbon Radial basis function neural network Environmental factor Spatial prediction
在线阅读 下载PDF
Evaluation of Landsat 8 image pansharpening in estimating soil organic matter using multiple linear regression and artificial neural networks 被引量:4
15
作者 Abdelkrim Bouasria Khalid Ibno Namr +2 位作者 Abdelmejid Rahimi El Mostafa Ettachfini Badr Rerhou 《Geo-Spatial Information Science》 SCIE EI CSCD 2022年第3期353-364,共12页
In agricultural systems,the regular monitoring of Soil Organic Matter(SOM)dynamics is essential.This task is costly and time-consuming when using the conventional method,especially in a very fragmented area and with i... In agricultural systems,the regular monitoring of Soil Organic Matter(SOM)dynamics is essential.This task is costly and time-consuming when using the conventional method,especially in a very fragmented area and with intensive agricultural activity,such as the area of Sidi Bennour.The study area is located in the Doukkala irrigated perimeter in Morocco.Satellite data can provide an alternative and fill this gap at a low cost.Models to predict SOM from a satellite image,whether linear or nonlinear,have shown considerable interest.This study aims to compare SOM prediction using Multiple Linear Regression(MLR)and Artificial Neural Networks(ANN).A total of 368 points were collected at a depth of 0-30 cm and analyzed in the laboratory.An image at 15 m resolution(MSPAN)was produced from a 30 m resolution(MS)Landsat-8 image using image pansharpening processing and panchromatic band(15 m).The results obtained show that the MLR models predicted the SOM with(training/validation)R^(2)values of 0.62/0.63 and 0.64/0.65 and RMSE values of 0.23/0.22 and 0.22/0.21 for the MS and MSPAN images,respectively.In contrast,the ANN models predicted SOM with R2 values of 0.65/0.66 and 0.69/0.71 and RMSE values of 0.22/0.10 and 0.21/0.18 for the MS and MSPAN images,respectively.Image pansharpening improved the prediction accuracy by 2.60%and 4.30%and reduced the estimation error by 0.80%and 1.30%for the MLR and ANN models,respectively. 展开更多
关键词 Digital soil mapping soil organic matter remote sensing multiple linear regression artificial neural networks irrigated area Doukkala Morocco
原文传递
Artificial Neural Network and Full Factorial Design Assisted AT-MRAM on Fe Oxides, Organic Materials, and Fe/Mn Oxides in Surficial Sediments 被引量:1
16
作者 GAO Qian WANG Zhi-zeng WANG Qian LI Shan-shan LI Yu 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2011年第6期944-948,共5页
Artificial neural network(ANN) and full factorial design assisted atrazine(AT) multiple regression adsorption model(AT-MRAM) were developed to analyze the adsorption capability of the main components in the surf... Artificial neural network(ANN) and full factorial design assisted atrazine(AT) multiple regression adsorption model(AT-MRAM) were developed to analyze the adsorption capability of the main components in the surficial sediments(SSs). Artificial neural network was used to build a model(the determination coefficient square r2 is 0.9977) to describe the process of atrazine adsorption onto SSs, and then to predict responses of the full factorial design. Based on the results of the full factorial design, the interactions of the main components in SSs on AT adsorption were investigated through the analysis of variance(ANOVA), F-test and t-test. The adsorption capability of the main components in SSs for AT was calculated via a multiple regression adsorption model(MRAM). The results show that the greatest contribution to the adsorption of AT on a molar basis was attributed to Fe/Mn(–1.993 μmol/mol). Organic materials(OMs) and Fe oxides in SSs are the important adsorption sites for AT, and the adsorption capabilities are 1.944 and 0.418 μmol/mol, respectively. The interaction among the non-residual components(Fe, Mn oxides and OMs) in SSs interferes in the adsorption of AT that shouldn’t be neglected, revealing the significant contribution of the interaction among non-residual components to controlling the behavior of AT in aquatic environments. 展开更多
关键词 Back propagation(BP) artificial neural network Full factorial design Fe/Mn oxide organic material ATRAZINE Interaction
在线阅读 下载PDF
Impact of utilization of hepatitis C positive organs in liver transplant:Analysis of united network for organ sharing database 被引量:3
17
作者 Amaninder Dhaliwal Banreet Dhindsa +3 位作者 Daryl Ramai Harlan Sayles Saurabh Chandan Rajani Rangray 《World Journal of Hepatology》 2022年第5期984-991,共8页
BACKGROUND The utility of hepatitis C virus(HCV)organs has increased after the Food and Drug Administration approval of direct acting anti-viral(DAA)medications for the HCV treatment.The efficacy of DAA in treating HC... BACKGROUND The utility of hepatitis C virus(HCV)organs has increased after the Food and Drug Administration approval of direct acting anti-viral(DAA)medications for the HCV treatment.The efficacy of DAA in treating HCV is nearly 100%.AIM To analyze the United Network for Organ Sharing(UNOS)database to compare the survival rates between the hepatitis C positive donors and negative recipients and hepatitis C negative donors and recipients.METHODS We analyzed the adult patients in UNOS database who underwent deceased donor liver transplant from January 2014 to December 2017.The primary endpoint was to compare the survival rates among the four groups with different hepatitis C donor and recipient status:(Group 1)Both donor and recipient negative for HCV(Group 2)Negative donor and positive recipient for HCV(Group 3)Positive donor and negative recipient for HCV(Group 4)Both positive donor and recipient for HCV.SAS 9.4 software was used for the data analysis.Kaplan Meier log rank test was used to analyze the estimated survival rates among the four groups.RESULTS A total of 24512 patients were included:Group 1:16436,Group 2:6174,Group 3:253 and Group 4:1649.The 1-year(Group 1:91.8%,Group 2:92.12%,Group 3:87%,Group 4:92.8%),2-year(Group 1:88.4%,Group 2:88.1%,Group 3:84.3%,Group 4:87.5%),3-year(Group 1:84.9%,Group 2:84.3%,Group 3:75.9%,Group 4:83.2%)survival rates showed no statistical significance among the four groups.Kaplan Meier log rank test did not show any statistical significance difference in the estimated survival rates between Group 3 vs all the other groups.CONCLUSION The survival rates in hepatitis C positive donors and negative recipients are similar as compared to both hepatitis C negative donors and recipients.This could be due to the use of DAA therapy with cure rates of nearly 100%.This study supports the use of hepatitis C positive organs in the selected group of recipients with and without HCV infection.Further long-term studies are needed to further validate these findings. 展开更多
关键词 Hepatitis C Liver transplant Survival United network for organ Sharing Direct acting antiviral
暂未订购
Comprehensive regulatory networks for tomato organ development based on the genome and RNAome of MicroTom tomato 被引量:1
18
作者 Jia-Yu Xue Hai-Yun Fan +8 位作者 Zhen Zeng Yu-Han Zhou Shuai-Ya Hu Sai-Xi Li Ying-Juan Cheng Xiang-Ru Meng Fei Chen Zhu-Qing Shao Yves Van de Peer 《Horticulture Research》 SCIE CSCD 2023年第9期13-23,共11页
MicroTom has a short growth cycle and high transformation efficiency,and is a prospective model plant for studying organ development,metabolism,and plant–microbe interactions.Here,with a newly assembled reference gen... MicroTom has a short growth cycle and high transformation efficiency,and is a prospective model plant for studying organ development,metabolism,and plant–microbe interactions.Here,with a newly assembled reference genome for this tomato cultivar and abundant RNA-seq data derived from tissues of different organs/developmental stages/treatments,we constructed multiple gene co-expression networks,which will provide valuable clues for the identification of important genes involved in diverse regulatory pathways during plant growth,e.g.arbuscular mycorrhizal symbiosis and fruit development.Additionally,non-coding RNAs,including miRNAs,lncRNAs,and circRNAs were also identified,together with their potential targets.Interacting networks between different types of non-coding RNAs(miRNA-lncRNA),and non-coding RNAs and genes(miRNA-mRNA and lncRNA-mRNA)were constructed as well.Our results and data will provide valuable information for the study of organ differentiation and development of this important fruit.Lastly,we established a database(http://eplant.njau.edu.cn/microTomBase/)with genomic and transcriptomic data,as well as details of gene co-expression and interacting networks on MicroTom,and this database should be of great value to those who want to adopt MicroTom as a model plant for research. 展开更多
关键词 METABOLISM organS networkS
原文传递
Microporous Organic Nanotube Networks from Hyper Cross-linking Core-shell Bottlebrush Copolymers for Selective Adsorption Study 被引量:2
19
作者 Tian-Qi Wang Yang Xu +2 位作者 Zi-Dong He Ming-Hong Zhou Kun Huang 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2018年第1期98-105,共8页
We report a synthesis of microporous organic nanotube networks(MONNs) by a combination of hyper cross-linking and molecular templating of core-shell bottlebrush copolymers. The intrabrush and interbrush cross-linkin... We report a synthesis of microporous organic nanotube networks(MONNs) by a combination of hyper cross-linking and molecular templating of core-shell bottlebrush copolymers. The intrabrush and interbrush cross-linking of polystyrene(PS) shell layer in the core-shell bottlebrush copolymers led to the formation of micropores and large-sized nanopores(meso/macrospores) in MONNs, respectively, while selective removal of polylactide(PLA) core layer generated mesoporous tubular structure. The size of PLA-templated mesoporous cores and porous structure both at micro-and meso-scale could be controlled by simple tuning of the ratio of core/shell or the PLA core fraction in the bottlebrush precursors. Moreover, the resultant MONNs showed a highly selective adsorption capacity for the positively charged dyes on the basis of multi-porosity and carboxylate group-rich structure. In addition, MONNs also exhibited effective performance in size-selective adsorption of biomacromolecules. This work represents a new avenue for the preparation of MONNs and also provides a new application for molecular bottlebrushes in nanotechnology. 展开更多
关键词 Microporous organic nanotube networks Hyper cross-linking Core-shell bottlebrush copolymers Meso/Macrospores Selective adsorption capacity
原文传递
Self-organizing fuzzy clustering neural network and application to electronic countermeasures effectiveness evaluation 被引量:6
20
作者 Li Zhisheng Li Junshan +1 位作者 Feng Fan Zhao Xin 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2008年第1期119-124,共6页
A self-organizing fuzzy clustering neural network by combining the self-organizing Kohonen clustering network with the fuzzy theory is proposed. This network model is designed for the effectiveness evaluation of elect... A self-organizing fuzzy clustering neural network by combining the self-organizing Kohonen clustering network with the fuzzy theory is proposed. This network model is designed for the effectiveness evaluation of electronic countermeasures, which not only exerts the advantages of the fuzzy theory, but also has a good ability in machine learning and data analysis. The subjective value of sample versus class is computed by the fuzzy computing theory, and the classified results obtained by self-organizing learning of Kohonen neural network are represented on output layer. Meanwhile, the fuzzy competition learning algorithm keeps the similar information between samples and overcomes the disadvantages of neural network which has fewer samples. The simulation result indicates that the proposed algorithm is feasible and effective. 展开更多
关键词 fuzzy clusteringself-organizing neural network effectiveness evaluation
在线阅读 下载PDF
上一页 1 2 219 下一页 到第
使用帮助 返回顶部