期刊文献+
共找到1,616篇文章
< 1 2 81 >
每页显示 20 50 100
On the Canonicity of the 1947 Edition of T‘ai-Chi Ch‘üan
1
作者 Jin Yan 《Contemporary Social Sciences》 2021年第4期106-121,共16页
The 1947 edition of T‘ai-Chi Ch‘üan:Its Effects and Practical Applications,an English translation of the original Chinese work,is by far the first discovered English publication systematically introducing the k... The 1947 edition of T‘ai-Chi Ch‘üan:Its Effects and Practical Applications,an English translation of the original Chinese work,is by far the first discovered English publication systematically introducing the knowledge and skills of taijiquan(previously known as T‘ai-Chi Ch‘üan).The 1947 edition had long remained in oblivion in Chinese academic circles,although it paved the way for the extensive popularization of taijiquan and has exerted a far-reaching impact on the English-speaking world.This paper applies the four dimensions of canonicity(rich content,substantial creativity,time-and-space transcendency,infinite readability)to examine the aesthetic value of the English text.The purpose is to reveal the understanding and reception of taijiquan among English readers,shed light on the English translation of the taijiquan culture,and promote the canonization of taijiquan as a representative of fine traditional Chinese culture and its integration into global cultures. 展开更多
关键词 TAIJIQUAN the 1947 edition of T‘ai-Chi Ch‘üan canonicity English translation of(taijiquan)culture
下载PDF
Fe(Ⅱ)对CANON工艺处理城镇污水脱氮性能的影响
2
作者 张倩倩 廖祖刚 +3 位作者 冯泽通 刘金泽 符文婧 赵剑强 《安全与环境工程》 CAS CSCD 北大核心 2024年第2期291-300,共10页
全程自养脱氮(CANON)工艺,作为新型脱氮工艺应用于城镇污水深度脱氮过程中,有望降低污水处理的运行费用。考察了亚铁离子[Fe(Ⅱ)]对CANON工艺启动及稳定运行时脱氮性能的影响。结果表明:15~23℃条件下投加6.3 mg/L Fe(Ⅱ)时,可有效启动... 全程自养脱氮(CANON)工艺,作为新型脱氮工艺应用于城镇污水深度脱氮过程中,有望降低污水处理的运行费用。考察了亚铁离子[Fe(Ⅱ)]对CANON工艺启动及稳定运行时脱氮性能的影响。结果表明:15~23℃条件下投加6.3 mg/L Fe(Ⅱ)时,可有效启动并稳定运行CANON工艺处理城镇污水,该工艺氮去除负荷(NRR)、总氮去除率(TNRE)和氨氮去除率(ARE)分别为(4.8±1.1)g-N/(L^(3)·d)、(97±1)%和(44.2±9.3)%;相关性分析表明,通过调控Fe(Ⅱ)投加量可有效抑制亚硝酸盐氧化菌(NOB)的活性;本次优化的Fe(Ⅱ)投加量为6.3 mg/L,其对CANON工艺脱氮性能的影响机制与CANON工艺中功能微生物活性的提高、Fe(Ⅱ)与进水氨氮及其他氮化合物的循环反应、铁型反硝化过程以及铁型厌氧氨氧化过程的耦合有关。 展开更多
关键词 CANON工艺 城镇污水 Fe(Ⅱ) 脱氮效能
下载PDF
A Novel 3D Gait Model for Subject Identification Robust against Carrying and Dressing Variations
3
作者 Jian Luo Bo Xu +1 位作者 Tardi Tjahjadi Jian Yi 《Computers, Materials & Continua》 SCIE EI 2024年第7期235-261,共27页
Subject identification via the subject’s gait is challenging due to variations in the subject’s carrying and dressing conditions in real-life scenes.This paper proposes a novel targeted 3-dimensional(3D)gait model(3... Subject identification via the subject’s gait is challenging due to variations in the subject’s carrying and dressing conditions in real-life scenes.This paper proposes a novel targeted 3-dimensional(3D)gait model(3DGait)represented by a set of interpretable 3DGait descriptors based on a 3D parametric body model.The 3DGait descriptors are utilised as invariant gait features in the 3DGait recognition method to address object carrying and dressing.The 3DGait recognitionmethod involves 2-dimensional(2D)to 3DGaitdata learningbasedon3Dvirtual samples,a semantic gait parameter estimation Long Short Time Memory(LSTM)network(3D-SGPE-LSTM),a feature fusion deep model based on a multi-set canonical correlation analysis,and SoftMax recognition network.First,a sensory experiment based on 3D body shape and pose deformation with 3D virtual dressing is used to fit 3DGait onto the given 2D gait images.3Dinterpretable semantic parameters control the 3D morphing and dressing involved.Similarity degree measurement determines the semantic descriptors of 2D gait images of subjects with various shapes,poses and styles.Second,using the 2D gait images as input and the subjects’corresponding 3D semantic descriptors as output,an end-to-end 3D-SGPE-LSTM is constructed and trained.Third,body shape,pose and external gait factors(3D-eFactors)are estimated using the 3D-SGPE-LSTM model to create a set of interpretable gait descriptors to represent the 3DGait Model,i.e.,3D intrinsic semantic shape descriptor(3DShape);3D skeleton-based gait pose descriptor(3D-Pose)and 3D dressing with other 3D-eFators.Finally,the 3D-Shape and 3D-Pose descriptors are coupled to a unified pattern space by learning prior knowledge from the 3D-eFators.Practical research on CASIA B,CMU MoBo,TUM GAID and GPJATK databases shows that 3DGait is robust against object carrying and dressing variations,especially under multi-cross variations. 展开更多
关键词 Gait recognition human identification three-dimensional gait canonical correlation analysis
下载PDF
Cross-Project Software Defect Prediction Based on SMOTE and Deep Canonical Correlation Analysis
4
作者 Xin Fan Shuqing Zhang +2 位作者 Kaisheng Wu Wei Zheng Yu Ge 《Computers, Materials & Continua》 SCIE EI 2024年第2期1687-1711,共25页
Cross-Project Defect Prediction(CPDP)is a method that utilizes historical data from other source projects to train predictive models for defect prediction in the target project.However,existing CPDP methods only consi... Cross-Project Defect Prediction(CPDP)is a method that utilizes historical data from other source projects to train predictive models for defect prediction in the target project.However,existing CPDP methods only consider linear correlations between features(indicators)of the source and target projects.These models are not capable of evaluating non-linear correlations between features when they exist,for example,when there are differences in data distributions between the source and target projects.As a result,the performance of such CPDP models is compromised.In this paper,this paper proposes a novel CPDP method based on Synthetic Minority Oversampling Technique(SMOTE)and Deep Canonical Correlation Analysis(DCCA),referred to as S-DCCA.Canonical Correlation Analysis(CCA)is employed to address the issue of non-linear correlations between features of the source and target projects.S-DCCA extends CCA by incorporating the MlpNet model for feature extraction from the dataset.The redundant features are then eliminated by maximizing the correlated feature subset using the CCA loss function.Finally,cross-project defect prediction is achieved through the application of the SMOTE data sampling technique.Area Under Curve(AUC)and F1 scores(F1)are used as evaluation metrics.This paper conducted experiments on 27 projects from four public datasets to validate the proposed method.The results demonstrate that,on average,our method outperforms all baseline approaches by at least 1.2%in AUC and 5.5%in F1 score.This indicates that the proposed method exhibits favorable performance characteristics. 展开更多
关键词 Cross-project defect prediction deep canonical correlation analysis feature similarity
下载PDF
A Novel CCA-NMF Whitening Method for Practical Machine Learning Based Underwater Direction of Arrival Estimation
5
作者 Yun Wu Xinting Li Zhimin Cao 《Journal of Beijing Institute of Technology》 EI CAS 2024年第2期163-174,共12页
Underwater direction of arrival(DOA)estimation has always been a very challenging theoretical and practical problem.Due to the serious non-stationary,non-linear,and non-Gaussian characteristics,machine learning based ... Underwater direction of arrival(DOA)estimation has always been a very challenging theoretical and practical problem.Due to the serious non-stationary,non-linear,and non-Gaussian characteristics,machine learning based DOA estimation methods trained on simulated Gaussian noised array data cannot be directly applied to actual underwater DOA estimation tasks.In order to deal with this problem,environmental data with no target echoes can be employed to analyze the non-Gaussian components.Then,the obtained information about non-Gaussian components can be used to whiten the array data.Based on these considerations,a novel practical sonar array whitening method was proposed.Specifically,based on a weak assumption that the non-Gaussian components in adjacent patches with and without target echoes are almost the same,canonical cor-relation analysis(CCA)and non-negative matrix factorization(NMF)techniques are employed for whitening the array data.With the whitened array data,machine learning based DOA estimation models trained on simulated Gaussian noised datasets can be used to perform underwater DOA estimation tasks.Experimental results illustrated that,using actual underwater datasets for testing with known machine learning based DOA estimation models,accurate and robust DOA estimation performance can be achieved by using the proposed whitening method in different underwater con-ditions. 展开更多
关键词 direction of arrival(DOA) sonar array data underwater disturbance machine learn-ing canonical correlation analysis(CCA) non-negative matrix factorization(NMF)
下载PDF
Evaluation of Soil Fertility Quality and Environmental Driving Factors in Different Soil Types of Artificial Forests
6
作者 Songyu YU Zhenhui LIAO +3 位作者 Mingwu YANG Ronghui HU Yuanyuan SHI Junyu ZHAO 《Meteorological and Environmental Research》 2024年第2期64-70,共7页
The aim was to clarify the environmental driving factors of soil fertility indicators in artificial forests of Guangxi and comprehensively evaluate the soil fertility level.By collecting data on the current status of ... The aim was to clarify the environmental driving factors of soil fertility indicators in artificial forests of Guangxi and comprehensively evaluate the soil fertility level.By collecting data on the current status of soil in artificial forests,the spatial distribution of major soil fertility indicators was analyzed,and the distribution map of the fertility index of artificial forests in the entire region and the comprehensive fertility index of artificial forests of different soil types were obtained.Canonical correspondence analysis method was used to analyze soil fertility indicators and environmental factors,and the environmental driving factors of soil fertility indicators for artificial forests of the main soil types in Guangxi were obtained.The results showed that over 90%of the soil fertility index of artificial forests in the entire region was between 0.20 and 0.50.The order of soil fertility index of different soil types of artificial forests from high to low was yellow brown soil>yellow red soil>yellow soil>red soil>limestone soil>latosolic red soil>laterite.In artificial forests of latosolic red soil,the correlation between soil alkaline nitrogen and organic matter,annual average temperature was high,while the correlation between soil available phosphorus and organic matter,pH was high,and the correlation between soil available potassium and environmental factors such as slope,altitude,rainfall,accumulated temperature,and slope aspect was high.In artificial forests of red soil,the correlation between soil alkaline nitrogen and slope,altitude was high,while the correlation between soil available phosphorus and accumulated temperature,rainfall was high,and the correlation between soil available potassium and pH was high.In artificial forests of limestone soil,there was a high correlation between soil alkaline nitrogen and slope,organic matter,a high correlation between soil available phosphorus and accumulated temperature,rainfall,and a high correlation between soil available potassium and pH. 展开更多
关键词 Soil fertility index GIS Forest soil Canonical correspondence analysis
下载PDF
厌氧氨氧化相关工艺处理垃圾渗滤液的研究进展
7
作者 李环宇 白玥萌 《辽宁化工》 CAS 2024年第5期738-741,共4页
垃圾渗滤液具有氨氮浓度高、有机物浓度高和碳氮比低的特点。厌氧氨氧化工艺脱氮能力强、能耗低,适用于垃圾渗滤液脱氮处理。对比了传统硝化反硝化工艺、短程硝化耦合厌氧氨氧化工艺和短程反硝化耦合厌氧氨氧化工艺,介绍了基于厌氧氨氧... 垃圾渗滤液具有氨氮浓度高、有机物浓度高和碳氮比低的特点。厌氧氨氧化工艺脱氮能力强、能耗低,适用于垃圾渗滤液脱氮处理。对比了传统硝化反硝化工艺、短程硝化耦合厌氧氨氧化工艺和短程反硝化耦合厌氧氨氧化工艺,介绍了基于厌氧氨氧化技术处理垃圾渗滤液的相关工艺,为垃圾渗滤液处理和厌氧氨氧化工艺研究提出了思路。 展开更多
关键词 垃圾渗滤液 厌氧氨氧化 短程硝化 短程反硝化 CANON
下载PDF
水力条件对CANON工艺颗粒污泥特性的影响研究
8
作者 漆磊 《四川环境》 2023年第5期25-30,共6页
为实现自养生物脱氮,采用膨胀颗粒污泥床小试反应器(R1~R3)培养全程自养脱氮工艺(Completely Autotrophic Nitrogen Removal Over Nitrite, CANON)颗粒污泥,考察了不同上升流速、水力剪切力和溶解氧浓度下CANON颗粒污泥浓度和粒径的变... 为实现自养生物脱氮,采用膨胀颗粒污泥床小试反应器(R1~R3)培养全程自养脱氮工艺(Completely Autotrophic Nitrogen Removal Over Nitrite, CANON)颗粒污泥,考察了不同上升流速、水力剪切力和溶解氧浓度下CANON颗粒污泥浓度和粒径的变化规律。结果表明:系统稳定后,污泥浓度呈现出R2>R1>R3,R1、R2成功实现CANON颗粒污泥启动,并且实现了颗粒化,而R3中较高的上升流速、水力剪切力导致系统内污泥易碎裂从而洗出系统,导致R3未能启动成功。 展开更多
关键词 CANON工艺 颗粒污泥 剪切力 污泥浓度 污泥粒径
下载PDF
长期-短期饥饿对CANON工艺启动的影响
9
作者 杨综艺 李军 +2 位作者 张凯 高鹏 唐鹏 《中国环境科学》 EI CAS CSCD 北大核心 2023年第7期3429-3437,共9页
采用序批式反应器(SBR)启动全程自养脱氮(CANON)工艺,考察启动过程中长期饥饿胁迫和短期饥饿调控对脱氮效果的影响,对短期饥饿前后功能菌活性进行测试,分析在缩短恢复时间下反复进行短期饥饿对亚硝酸盐氧化菌(NOB)的抑制作用,对CANON启... 采用序批式反应器(SBR)启动全程自养脱氮(CANON)工艺,考察启动过程中长期饥饿胁迫和短期饥饿调控对脱氮效果的影响,对短期饥饿前后功能菌活性进行测试,分析在缩短恢复时间下反复进行短期饥饿对亚硝酸盐氧化菌(NOB)的抑制作用,对CANON启动过程中的不同阶段进行微生物测序,分析群落结构的变化情况.结果表明,长期饥饿后系统在7d恢复运行时,TN去除率(NRE)可达到62.34%.短期饥饿-恢复模式加快了工艺的启动速度,成功将SBR中ΔNO_(3)^(-)-N/ΔNH_(4)^(+)-N控制在0.11左右.在实现启动时,工艺平均氨氮去除率(ARE)超过95%,平均NRE可达79.45%.采用短期饥饿调控前后,NOB活性由91.32mgN/(gVSS·d)降至45.40mgN/(gVSS·d),比厌氧氨氧化活性(SAA)升高至219.25mgN/(gVSS·d),保证了CANON脱氮性能.高通量测序表明,在经历长期饥饿后,好氧氨氧化菌(AerAOB)功能菌Nitrosomonas能够迅速恢复.Candidatus Kuenenia具有抵抗长期饥饿的能力,在7d恢复运行后,相对丰度高达69.04%,在稳定恢复运行中,丰度有所降低,但在工艺启动后丰度达到61.19%,实现了厌氧氨氧化菌(AnAOB)的富集.CANON工艺能够在长期饥饿胁迫中恢复,短期饥饿调控有利于提高工艺效能. 展开更多
关键词 全程自养脱氮(CANON) 长期饥饿 功能菌活性 亚硝酸盐氧化菌(NOB)
下载PDF
3-D Gait Identification Utilizing Latent Canonical Covariates Consisting of Gait Features 被引量:1
10
作者 Ramiz Gorkem Birdal Ahmet Sertbas 《Computers, Materials & Continua》 SCIE EI 2023年第9期2727-2744,共18页
Biometric gait recognition is a lesser-known but emerging and effective biometric recognition method which enables subjects’walking patterns to be recognized.Existing research in this area has primarily focused on fe... Biometric gait recognition is a lesser-known but emerging and effective biometric recognition method which enables subjects’walking patterns to be recognized.Existing research in this area has primarily focused on feature analysis through the extraction of individual features,which captures most of the information but fails to capture subtle variations in gait dynamics.Therefore,a novel feature taxonomy and an approach for deriving a relationship between a function of one set of gait features with another set are introduced.The gait features extracted from body halves divided by anatomical planes on vertical,horizontal,and diagonal axes are grouped to form canonical gait covariates.Canonical Correlation Analysis is utilized to measure the strength of association between the canonical covariates of gait.Thus,gait assessment and identification are enhancedwhenmore semantic information is available through CCA-basedmulti-feature fusion.Hence,CarnegieMellon University’s 3D gait database,which contains 32 gait samples taken at different paces,is utilized in analyzing gait characteristics.The performance of Linear Discriminant Analysis,K-Nearest Neighbors,Naive Bayes,Artificial Neural Networks,and Support Vector Machines was improved by a 4%average when the CCA-utilized gait identification approachwas used.Asignificant maximumaccuracy rate of 97.8%was achieved throughCCA-based gait identification.Beyond that,the rate of false identifications and unrecognized gaits went down to half,demonstrating state-of-the-art for gait identification. 展开更多
关键词 Gait identification canonical covariates multivariate data analysis gait determinant
下载PDF
全程自养生物脱氮工艺机理及影响因素分析 被引量:2
11
作者 李凯 李雪莹 +3 位作者 韩松 任治军 焉芷尧 刘宇航 《科学技术与工程》 北大核心 2023年第6期2252-2259,共8页
全程自养生物脱氮工艺(completely autotrophic nitrogen removal over nitrite,CANON)具备有机碳源投加少、能耗低、占地面积小、操作简单等优点,成为污水处理领域的重要研究对象。因此综述了全程自养生物脱氮工艺的机理、影响因素,分... 全程自养生物脱氮工艺(completely autotrophic nitrogen removal over nitrite,CANON)具备有机碳源投加少、能耗低、占地面积小、操作简单等优点,成为污水处理领域的重要研究对象。因此综述了全程自养生物脱氮工艺的机理、影响因素,分析了温度、pH、溶解氧(dissolved oxygen,DO)、基质浓度等因素对脱氮效果的影响,为全程自养生物脱氮工艺优化提供参考。 展开更多
关键词 全程自养生物脱氮工艺(completely autotrophic nitrogen removal over nitrite CANON) 污水处理 影响因素 生物脱氮
下载PDF
An Update Method of Decision Implication Canonical Basis on Attribute Granulating 被引量:1
12
作者 Yanhui Zhai Rujie Chen Deyu Li 《Intelligent Automation & Soft Computing》 SCIE 2023年第8期1833-1851,共19页
Decision implication is a form of decision knowledge represen-tation,which is able to avoid generating attribute implications that occur between condition attributes and between decision attributes.Compared with other... Decision implication is a form of decision knowledge represen-tation,which is able to avoid generating attribute implications that occur between condition attributes and between decision attributes.Compared with other forms of decision knowledge representation,decision implication has a stronger knowledge representation capability.Attribute granularization may facilitate the knowledge extraction of different attribute granularity layers and thus is of application significance.Decision implication canonical basis(DICB)is the most compact set of decision implications,which can efficiently represent all knowledge in the decision context.In order to mine all deci-sion information on decision context under attribute granulating,this paper proposes an updated method of DICB.To this end,the paper reduces the update of DICB to the updates of decision premises after deleting an attribute and after adding granulation attributes of some attributes.Based on this,the paper analyzes the changes of decision premises,examines the properties of decision premises,designs an algorithm for incrementally generating DICB,and verifies its effectiveness through experiments.In real life,by using the updated algorithm of DICB,users may obtain all decision knowledge on decision context after attribute granularization. 展开更多
关键词 Decision context attribute granulating decision implication decision implication canonical basis
下载PDF
低C/N比CANON工艺脱氮机制分析
13
作者 田亮 黄锐 +1 位作者 杜冬云 吴晨捷 《环境科学与技术》 CAS CSCD 北大核心 2023年第10期104-111,共8页
该文在微氧升流反应器中构建颗粒-絮体污泥体系,以乙酸钠作为碳源,探究了C/N对CANON工艺脱氮效率的影响,并分析了低C/N下该工艺的脱氮机制。当C/N=0.75时,TN和NH_(4)^(+)-N去除率达到了最高值92%和95%。而当C/N从0.75增长至1时,TN和NH_(... 该文在微氧升流反应器中构建颗粒-絮体污泥体系,以乙酸钠作为碳源,探究了C/N对CANON工艺脱氮效率的影响,并分析了低C/N下该工艺的脱氮机制。当C/N=0.75时,TN和NH_(4)^(+)-N去除率达到了最高值92%和95%。而当C/N从0.75增长至1时,TN和NH_(4)^(+)-N去除率分别下降至80%和85%;C/N回调至0.75后,10 d左右反应器性能恢复至91%TN去除率。C/N=0.75时脱氮贡献分析和粒度分布表明AnAOB对NO_(2)^(-)-N的摄取处于优势地位,反应器内主要发生Anammox反应和短程反硝化反应,合适的C/N并不会导致异养菌取代AnAOB的优势地位,且Anammox反应的脱氮贡献在56%~62%之间。 展开更多
关键词 微氧升流反应器 CANON工艺 颗粒-絮体污泥 脱氮机制 低C/N
下载PDF
Transient receptor potential-related risk model predicts prognosis of hepatocellular carcinoma patients 被引量:1
14
作者 Xiao-Cai Mei Qian Chen Shi Zuo 《World Journal of Gastrointestinal Oncology》 SCIE 2023年第12期2064-2076,共13页
BACKGROUND Members of the transient receptor potential(TRP)protein family shape oncogenic development,but the specific relevance of TRP-related genes in hepatocellular carcinoma(HCC)has yet to be defined.AIM To invest... BACKGROUND Members of the transient receptor potential(TRP)protein family shape oncogenic development,but the specific relevance of TRP-related genes in hepatocellular carcinoma(HCC)has yet to be defined.AIM To investigate the role of TRP genes in HCC,their association with HCC development and treatment was examined.METHODS HCC patient gene expression and clinical data were downloaded from The Cancer Genome Atlas database,and univariate and least absolute shrinkage and selection operator Cox regression models were employed to explore the TRP-related risk spectrum.Based on these analyses,clinically relevant TRP family genes were selected,and the association between the key TRP canonical type 1(TRPC1)gene and HCC patient prognosis was evaluated.RESULTS In total,28 TRP family genes were screened for clinical relevance,with multivariate analyses ultimately revealing three of these genes(TRPC1,TRP cation channel subfamily M member 2,and TRP cation channel subfamily M member 6)to be significantly associated with HCC patient prognosis(P<0.05).These genes were utilized to establish a TRP-related risk model.Patients were separated into low-and high-risk groups based on the expression of these genes,and high-risk patients exhibited a significantly poorer prognosis(P=0.001).Functional analyses highlighted pronounced differences in the immune status of patients in these two groups and associated enriched immune pathways.TRPC1 was identified as a candidate gene in this family worthy of further study,with HCC patients expressing higher TRPC1 levels exhibiting poorer survival outcomes.Consistently,quantitative,immunohistochemistry,and western blot analyses revealed increased TRPC1 expression in HCC.CONCLUSION These three TRP genes help determine HCC patient prognosis,providing insight into tumor immune status and immunological composition.These findings will help design combination therapies including immunotherapeutic and anti-TRP agents. 展开更多
关键词 Transient receptor potential family genes Hepatocellular carcinoma Transient receptor potential canonical type 1 Novel oncogene
下载PDF
Drivers of Forecasting the Behavioral Intention and Acceptance Behavior of the Hail Canon Technology(HCT): Using Logistic and System Dynamics Modeling
15
作者 ABADI Bijan HAGHANINIA Mohammad 《Chinese Geographical Science》 SCIE CSCD 2023年第3期549-564,共16页
Globally known about the drivers through which farmers are instigated to uphold and use Hail Canon Technology(HCT)is lacking.Therefore,this article intended to examine the drivers of forecasting the behavioral intenti... Globally known about the drivers through which farmers are instigated to uphold and use Hail Canon Technology(HCT)is lacking.Therefore,this article intended to examine the drivers of forecasting the behavioral intention and acceptance behavior of the HCT,249 apple farmers from northwestern Iran were recruited,including adopters(n1=114)and non-adopters(n2=135).The conceptual foundation included demographic theory,resource-based theory,theory of planned behavior,innovation diffusion model,and institutional support model.We also used the system dynamics model(SDM)in the Netlogo to assess the results of the conventional statistical approach(i.e.,the logistic model).Authenticated the fitness of conceptual model with the data,logistic model manifests that the most outstanding determinants of the acceptance of HCT entail age,experience,total land size,income,attitude,compatibility,visibility,relative advantage,and financial support.Using the SDM,it was also shown that the results of the logistic model are confirmed by the SDM.In conclusion,management implications are available for the university extension to eliminate the adoption obstacles and stir up farmers to join in applying HCT,furthermore,researchers would avail themselves of remarks for future research. 展开更多
关键词 CANON VISIBILITY furthermore
下载PDF
Underwater Data-Driven Positioning Estimation Using Local Spatiotemporal Nonlinear Correlation
16
作者 Chengming Luo Luxue Wang +2 位作者 Xudong Yang Gaifang Xin Biao Wang 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2023年第8期1775-1777,共3页
Dear Editor,A global and local canonical correlation analysis(GLCCA)based on data-driven is presented for underwater positioning.Underwater positioning technology can help the underwater targets move predetermined des... Dear Editor,A global and local canonical correlation analysis(GLCCA)based on data-driven is presented for underwater positioning.Underwater positioning technology can help the underwater targets move predetermined destinations for specific tasks[1].Since using different sensor,underwater positioning can be divided into three types:inertial navigation,hydroacoustic positioning and geophysical navigation. 展开更多
关键词 UNDERWATER Nonlinear CANONICAL
下载PDF
A Method of SSVEP Signal Identification Based on Improved eCAA 被引量:1
17
作者 LI Jiaxin DAI Fengzhi +2 位作者 YIN Di LU Peng WEN Haokang 《Instrumentation》 2023年第4期1-11,共11页
Brain-computer interfaces(BCI)based on steady-state visual evoked potentials(SSVEP)have attracted great interest because of their higher signal-to-noise ratio,less training,and faster information transfer.However,the ... Brain-computer interfaces(BCI)based on steady-state visual evoked potentials(SSVEP)have attracted great interest because of their higher signal-to-noise ratio,less training,and faster information transfer.However,the existing signal recognition methods for SSVEP do not fully pay attention to the important role of signal phase characteristics in the recognition process.Therefore,an improved method based on extended Canonical Correlation Analysis(eCCA)is proposed.The phase parameters are added from the stimulus paradigm encoded by joint frequency phase modulation to the reference signal constructed from the training data of the subjects to achieve phase constraints on eCCA,thereby improving the recognition performance of the eCCA method for SSVEP signals,and transmit the collected signals to the robotic arm system to achieve control of the robotic arm.In order to verify the effectiveness and advantages of the proposed method,this paper evaluated the method using SSVEP signals from 35 subjects.The research shows that the proposed algorithm improves the average recognition rate of SSVEP signals to 82.76%,and the information transmission rate to 116.18 bits/min,which is superior to TRCA and traditional eCAA-based methods in terms of information transmission speed and accuracy,and has better stability. 展开更多
关键词 Brain-computer Interface Electroencephalographic Signal Extended Canonical Correlation Analysis(eCCA) MANIPULATOR Steady State Visual Evoked Potential
下载PDF
Grand canonical Monte Carlo simulation study of hydrogen storage by Li-decorated pha-graphene
18
作者 张蒙蒙 张凤 +7 位作者 吴强 黄欣 闫巍 赵春梅 陈伟 杨志红 王允辉 武婷婷 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第6期476-480,共5页
Grand canonical Monte Carlo simulation(GCMCs)is utilized for studying hydrogen storage gravimetric density by pha-graphene at different metal densities,temperatures and pressures.It is demonstrated that the optimum ad... Grand canonical Monte Carlo simulation(GCMCs)is utilized for studying hydrogen storage gravimetric density by pha-graphene at different metal densities,temperatures and pressures.It is demonstrated that the optimum adsorbent location for Li atoms is the center of the seven-membered ring of pha-graphene.The binding energy of Li-decorated phagraphene is larger than the cohesive energy of Li atoms,implying that Li can be distributed on the surface of pha-graphene without forming metal clusters.We fitted the force field parameters of Li and C atoms at different positions and performed GCMCs to study the absorption capacity of H_(2).The capacity of hydrogen storage was studied by the differing density of Li decoration.The maximum hydrogen storage capacity of 4Li-decorated pha-graphene was 15.88 wt%at 77 K and100 bar.The enthalpy values of adsorption at the three densities are in the ideal range of 15 kJ·mol^(-1)-25 kJ·mol^(-1).The GCMC results at different pressures and temperatures show that with the increase in Li decorative density,the hydrogen storage gravimetric ratio of pha-graphene decreases but can reach the 2025 US Department of Energy's standard(5.5 wt%).Therefore,pha-graphene is considered to be a potential hydrogen storage material. 展开更多
关键词 hydrogen storage pha-graphene grand canonical Monte Carlo simulation(GCMCs) force field
下载PDF
Cohen-Macaulay局部环上的Canonical模
19
作者 路姣姣 杨晓燕 《吉林大学学报(理学版)》 CAS 北大核心 2023年第1期61-65,共5页
令(R,m,k)是Cohen-Macaulay局部环,M,N是有限生成R-模.假设N∈ΩCM(R),且Ext_(R)^(1≤i≤d)(M,N)=0,证明HomR(M,N)∈ΩCM(R),并给出有限生成模N是canonical模的条件.
关键词 Cohen-Macaulay局部环 极大Cohen-Macaulay模 canonical模
下载PDF
矩阵方程的最小二乘{P,Q,k+1}-自反解
20
作者 董昌州 李浩雪 《Chinese Quarterly Journal of Mathematics》 2023年第2期210-220,共11页
Let P∈C^( m×m )and Q∈C^( n×n) be Hermitian and{k+1}-potent matrices,i.e.,P k+1=P=P∗,Qk+1=Q=Q∗,where(·)∗stands for the conjugate transpose of a matrix.A matrix X∈C m×n is called{P,Q,k+1}-reflexiv... Let P∈C^( m×m )and Q∈C^( n×n) be Hermitian and{k+1}-potent matrices,i.e.,P k+1=P=P∗,Qk+1=Q=Q∗,where(·)∗stands for the conjugate transpose of a matrix.A matrix X∈C m×n is called{P,Q,k+1}-reflexive(anti-reflexive)if P XQ=X(P XQ=−X).In this paper,the least squares solution of the matrix equation AXB=C subject to{P,Q,k+1}-reflexive and anti-reflexive constraints are studied by converting into two simpler cases:k=1 and k=2. 展开更多
关键词 Matrix equations Potent matrix {P Q k+1}-reflexive(anti-reflexive) Canonical correlation decomposition Least squares solution
下载PDF
上一页 1 2 81 下一页 到第
使用帮助 返回顶部