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Transactions of Nanjing University of Aeronautics and Astronautics 2019年第4期36卷 537-544页

作者： YU Xiangbin LI Qiyishu hu yaping Pan Qing College of Electronic and Information Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China

In this paper,the performance analysis of cooperative space shift keying(SSK)system with dual hop amplify and forward(AF)in receive correlated Rayleigh channel is *** means of the performance analysis,a closed form approximate expression of the average bit error rate(BER)is derived for the performance *** this expression,in a high signal to noise ratio(SNR)region,a tight closed form asymptotic BER of the system is also *** can simplify the calculation of average BER and provide effective evaluation for asymptotic *** minimizing this asymptotic BER expression,a suboptimum power allocation(PA)scheme is developed,and the closed form PA coefficients are *** indicates that the suboptimal PA scheme outperforms the conventional equal PA scheme,and its performance is very close to that of the exhaustive search based optimal PA scheme but with low ***,the system performance under the spatially correlated channel is worse than that in spatially independent channel due to the effect of spatial correlation.

关键词： amplify and forward space shift keying receive correlation power allocation

Performance Analysis of AF Relaying Aided Space Shift Keying System with Imperfect Channel Estimation

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第6期35卷 1038-1046页

作者： Pan Qing Yu Xiangbin hu yaping Wang Xi Wang Cheng College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics

Space shift keying (SSK) is a spectrally efficient and low-complexity technique that only uses antenna index to convey *** SSK with cooperative communication,the transmission reliability of SSK system can be improved *** this paper,considering imperfect channel information,the performance of cooperative SSK system with amplify-and-forward (AF) relaying protocol is investigated,and the effect of estimation error on the performance is *** to the performance analysis,the probability density function and moment generating function of effective signal-to-noise ratio are derived,*** these results,the closed-form expression of average bit error rate (BER) can be ***,the asymptotically approximated BER and the corresponding diversity order analysis are presented for the performance *** computer simulations,the validness of the presented theoretical analysis is verified,and the theoretical BERs with different estimation errors are shown to be close to those of the corresponding simulations.

关键词： space shift keying amplify-and-forward channel-estimation error bit error rate diversity order

Genetic diversity, population structure, and genome-wide association analysis of ginkgo cultivars

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Horticulture Research 2023年第8期10卷 231-240页

作者： yaping hu Zhaoyan Yu Xiaoge Gao Ganping Liu Yun Zhang Petr Smarda Qirong Guo Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037China Coconut Research Institute of Chinese Academy of Tropical Agricultural Science WenchangHainan 571339China Institute of Grassland Flowersand EcologyBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China Department of Botany and Zoology Faculty of ScienceMasaryk UniversityKoltlárská2Brno 61137Czech Republic

Ginkgo biloba is an economically valuable tree *** species has nearly become extinct during the Quaternary,which has likely resulted in reduction of its genetic *** genetic variability is now conserved in few natural populations in China and a number of cultivars that are,however,derived from a few ancient trees,helping the species survive in China through medieval *** the recent interest in ginkgo,however,detailed knowledge of its genetic diversity,conserved in cultivated trees and cultivars,has remained *** limits efficient conservation of its diversity as well as efficient use of the existing germplasm *** we performed genotyping-by-sequencing(GBS)on 102 cultivated germplasms of ginkgo collected to explore their genetic structure,kinship,and inbreeding *** the first time in ginkgo,a genome-wide association analysis study(GWAS)was used to attempt gene mapping of seed *** results showed that most of the germplasms did not show any obvious genetic *** size of the ginkgo germplasm population expanded significantly around 1500 years ago during the Sui and Tang *** of seed cultivars based on a phylogenetic perspective does not support the current classification criteria based on ***-four candidate genes were localized after performing GWAS on the seed ***,this study reveals the genetic basis of ginkgo seed traits and provides insights into its cultivation *** findings will facilitate the conservation and utilization of the domesticated germplasms of this living fossil plant.

关键词： cultivar likely expanded

The Necessity of Cultural Elements in ESL Teaching --Through the Analysis of the Pragmatic Failure in Cross-cultural Communication

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Sino-US English Teaching 2005年第9期2卷 20-22页

作者： yaping hu Fudan University

It is undeniable that it is difficult for Chinese English learners to communicate competently in English with native English speakers. Compared with the grammar mistakes, the pragmalinguistic failures and sociopragmatic failures are subtle and have received less attention from Chinese English learners. Misunderstanding caused by cross-cultural pragmatic differences is the source of cross-cultural communication breakdown and therefore much more attention should be paid to our communication. The article concerns the failures occurred in cross-cultural communication to show the importance of cross-cultural awareness in the successful communication.

关键词： cross-cultural communication ESL teaching pragmatic failure

An Efficient Projected Gradient Method for Convex Constrained Monotone Equations with Applications in Compressive Sensing

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Journal of Applied Mathematics and Physics 2020年第6期8卷 983-998页

作者： yaping hu Yujie Wang College of Science Tianjin University of Science and Technology Tianjin China

In this paper, a modified Polak-Ribière-Polyak conjugate gradient projection method is proposed for solving large scale nonlinear convex constrained monotone equations based on the projection method of Solodov and Svaiter. The obtained method has low-complexity property and converges globally. Furthermore, this method has also been extended to solve the sparse signal reconstruction in compressive sensing. Numerical experiments illustrate the efficiency of the given method and show that such non-monotone method is suitable for some large scale problems.

关键词： Projection Method Monotone Equations Conjugate Gradient Method Compressive Sensing

Impact of Forest Eco-compensation Subsidy on Household Forest Input:Evidence from Jiangxi Province,China

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Journal of Donghua University(English Edition) 2020年第1期37卷 80-90页

作者： DU Juan hu yaping XIE Fangting Zhu Shubin College of Economics and Management Jiangxi Agricultural UniversityNanchang 330045China College of Computer and Information Technology Jiangxi Agricultural UniversityNanchang 330045China Research Center of Jiangxi Rural Development Jiangxi Agricultural UniversityNanchang 330045China

Larger amount of national and provincial forest eco-compensation funds in China have been distributed to farmers annually,which aims to encourage farmers input more labor and fund in daily forestry *** selected 503 household from 50 villages of 10 counties in Jiangxi Province in the *** labor and cash input responded negatively towards forest eco-compensation fund in forestry *** eco-compensation subsidy(FECS)granted to the household in the rural mountain area didn't stimulate the household labor and cash input in forestry *** implies that it is not a wise way to distribute FECS equally to the rural household,so as to promote the forestry ecological *** current forest eco-compensation policy(FECP)need modifying urgently.

关键词： forest eco-compensation subsidy(EFCS) household forestry input logit regression tobit regression policy modification

Coexistence of anti-phase and complete synchronization in the Chen-Lee system

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Coexistence of anti-phase and complete synchronization in th...

SYBIL-PROOF ID-TO-LOCATOR MAPPING IN ONE HOP

第三十九届中国控制会议

作者： yaping hu Yaru Zhang Rongwei Guo School of Mathematics and Statistics Qilu University of Technology（Shandong Academy of Sciences）

This paper investigates the coexistence of anti-phase and complete synchronization for the Chen-Lee system. Firstly,the existence of the coexistence of anti-phase and complete synchronization for such system is proven. Secondly, dividing the Chen-Lee system into two subsystems, the dynamic feedback controllers are designed, by which the coexistence of anti-phase and complete synchronization is realized. Finally, numerical simulations have been used to verify the validity and effectiveness of the proposed results.

关键词： Coexistence Anti-phase synchronization Complete synchronization Dynamic feedback control Chen-Lee system

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SYBIL-PROOF ID-TO-LOCATOR MAPPING IN ONE HOP

近十年国内外信息行为研究热点与前沿对比分析

2012 IEEE 2nd International Conference on Cloud Computing and Intelligence Systems

作者： Hengkui Wu Meixia Duan yaping hu Siyun Bao Science and Technology on Electronic Test & Measurement Laboratory 41st Research Institute of CETC North China University of Water Resources and Electric Power

In this paper, we propose SS-MAP, a scalable and Sybil-proof locator/ID mapping scheme for the future Internet. SS-MAP uses a near-optimal distributed hash table （DHT） to map identifiers onto locators in one hop with reasonable maintenance overhead, which are O（log n） hops in regular DHT-based mechanisms （ n is the number of mapping servers）. This is the first work to discuss sybil attacks in identifier （ID）-to-locator mapping, where a malicious mapping server creates numerous fake identities, called sybil identifiers, to influence the system. We present a decentralized admission control system via client puzzles to protect the mapping system from sybil attacks. We show the scalability and security of SS-MAP both analytically and experimentally.

关键词： Locator/ID separation ID-to-locator mapping Scalability Sybil attack

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情报杂志 2013年第6期32卷 107-113页

作者：胡雅萍南京大学信息管理学院南京210039

以Web of Science数据库和CNKI数据库中2002-2012年信息行为领域相关文献为研究对象,利用CiteSpaceII软件对相关引文数据、关键词数据进行分析和处理,对国内外信息行为研究的知识基础、研究热点和前沿进行对比分析,以期为我国信息行为... 详细信息

以Web of Science数据库和CNKI数据库中2002-2012年信息行为领域相关文献为研究对象,利用CiteSpaceII软件对相关引文数据、关键词数据进行分析和处理,对国内外信息行为研究的知识基础、研究热点和前沿进行对比分析,以期为我国信息行为的相关研究提供参考。

关键词：知识图谱信息行为共被引分析 CiteSpaceII

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基于多孔介质的指尖密封各向异性传热模型

航空动力学报 2017年第11期32卷 2585-2595页

作者：王强胡娅萍吉洪湖南京航空航天大学能源与动力学院南京210016

在指尖密封多孔介质流动模型的基础上,将指尖密封片之间的接触传热附加于固体导热之中,之后通过对密封固体结构与结构内流体的耦合各向异性传热进行理论分析,建立了指尖密封各向异性传热数学模型;基于商业软件Fluent中的用户自定义标量(... 详细信息

在指尖密封多孔介质流动模型的基础上,将指尖密封片之间的接触传热附加于固体导热之中,之后通过对密封固体结构与结构内流体的耦合各向异性传热进行理论分析,建立了指尖密封各向异性传热数学模型;基于商业软件Fluent中的用户自定义标量(UDS)方程功能,开发了多孔介质各向异性传热数值计算模块,并数值模拟了指尖密封结构内的流动与传热特性。结果表明:指梁与指尖靴区域的各向异性有效导热系数张量与孔隙率、径向和周向位置以及轴向接触热阻等因素相关;指尖密封最高温度出现在指尖靴与转子接触面的略下游处;与各向同性传热模型相比,采用各向异性传热模型时,指梁下部和指尖靴区域沿径向和轴向存在较大温度梯度,但温度沿周向的变化两者均很小;泄漏量随着压差的增加逐渐增大,随着转子转速的增加基本不变;指尖密封最高温度值随着压差的增加逐渐减小,随着转子转速的增加逐渐增大。

关键词：指尖密封自定义标量(UDS) 多孔介质各向异性传热温度场