http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Ping Yuan (검색결과 265 건)
- 무료
- 기관 내 무료
- 유료
-
-
Ping-Ping Yuan,Dong-Yan Xue,Zhou-Jie Zhao,Wei-Xin Ren 국제구조공학회 2024 Smart Structures and Systems, An International Jou Vol.33 No.6
To improve the accuracy of time-frequency analysis (TFA) and instantaneous frequency (IF) extraction of structural dynamic response signals, this paper improves the spline-kernelled chirplet transform, and a new form of modified spline-kernelled chirplet transform (MSCT) based on revised Gaussian window function and energy concentration principle is put forward. The effectiveness of the proposed method is verified by numerical examples of single-component signal, multi-component signal, single-degree-of-freedom Duffing nonlinear system and two-layer shear frame structure model. Then, a time-varying cable test is designed to collect the acceleration response signals under linear changing tension, and the IF extraction of these signals is performed by using MSCT, which further verifies the effectiveness and accuracy of this method. Through numerical simulation and experimental verification, it is proved that the proposed method can effectively extract the IF of nonlinear structure and time-varying structure.
-
Ping-Ping Yuan,Zhou-Jie Zhao,Ya Liu,Zhong-Xiang Shen 국제구조공학회 2024 Smart Structures and Systems, An International Jou Vol.33 No.3
Spline chirplet transform and local maximum synchrosqueezing are introduced to present a novel structural instantaneous frequency (IF) identification method named local maximum synchrosqueezing spline chirplet transform (LMSSSCT). Namely spline chirplet transform (SCT), a transform is firstly introduced based on classic chirplet transform and spline interpolated kernel function. Applying SCT in association with local maximum synchrosqueezing, the LMSSSCT is then proposed. The index of accuracy and Rényi entropy show that LMSSSCT outperforms the other time-frequency analysis (TFA) methods in processing analytical signals, especially in the presence of noise. Numerical examples of a Duffing nonlinear system with single degree of freedom and a two-layer shear frame structure with time-varying stiffness are used to verify the effectiveness of structural IF identification. Moreover, a nonlinear supported beam structure test is conducted and the LMSSSCT is utilized for structural IF identification. Numerical simulation and experimental results demonstrate that the presented LMSSSCT can effectively identify the IFs of nonlinear structures and time-varying structures with good accuracy and stability.
-
Ping-Ping Yuan,Xue-Li Cheng,Hang-Hang Wang,Jian Zhang,Zhong-Xiang Shen,Wei-Xin Ren 국제구조공학회 2021 Smart Structures and Systems, An International Jou Vol.28 No.5
A new method is proposed to improve the accuracy of structural instantaneous frequency (IF) extraction. The proposed method combines a new form of improved generalized S-transform (IGST) and a multi-synchrosqueezing operation. The parameters selection of the window function in IGST is derived through the concentration measure (CM) principle. Then, the multi-synchrosqueezing algorithm is employed to improve energy aggregation of time-frequency analysis (TFA). To verify the effectiveness and accuracy of the proposed improved multi-synchrosqueezing generalized S-transform (IMSSGST), a frequency-modulated multi-component signal is investigated. For structural IF extraction, a two-story shear frame and a threestory steel frame structure are introduced. Furthermore, the IF identification of a seven-story RC shear wall structure is conducted to verified the practicability in actual engineering. Numerical simulation and experimental results show that the proposed method can effectively improve the energy aggregation of TFA and effectively improve the accuracy of IF identification.
-
Health Economics Evaluation of a Gastric Cancer Early Detection and Treatment Program in China
Li, Dan,Yuan, Yuan,Sun, Li-Ping,Fang, Xue,Zhou, Bao-Sen Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.13
Objective: To use health economics methodology to assess the screening program on gastric cancer in Zhuanghe, China, so as to provide the basis for health decision on expanding the program of early detection and treatment. Materials and Methods: The expense of an early detection and treatment program for gastric cancer in patients found by screening, and also costs of traditional treatment in a hospital of Zhuanghe were assessed. Three major techniques of medical economics, namely cost-effective analysis (CEA), cost-benefit analysis (CBA) and cost-utility analysis (CUA), were used to assess the screening program. Results: Results from CEA showed that investing every 25, 235 Yuan on screening program in Zhuanghe area, one gastric cancer patient could be saved. Data from CUA showed that it was cost 1, 370 Yuan per QALY saved. Results from CBA showed that: the total cost was 1,945,206 Yuan with a benefit as 8,669,709 Yuan and an CBR of 4.46. Conclusions: The early detection and treatment program of gastric cancer appears economic and society-beneficial. We suggest that it should be carry out in more high risk areas for gastric cancer.
-
Ping-Rong Yuan,Hyun-Jung Kim,Qiong-Hua Chen,Hong-Guang Ju,Seung-Joon Lee,Shi-Dong Ji,안상낙 한국작물학회 2009 Journal of crop science and biotechnology Vol.12 No.4
The nearly isogenic nature of the introgression lines (ILs) provides a relative advantage over other segregating populations in therapid implementation of pyramiding approach through crosses and marker analysis. A set of 126 ILs carrying various introgressedsegments from a presumed wild progenitor, Oryza rufipogon Griff. Acc. W1944 in the background of an elite Korea japonica cultivar(O. sativa L.), Hwayeongbyeo, was constructed using the marker assisted selection (MAS) technique combined with repeatedbackcrosses. The 126 ILs have different W1944 segments on each chromosome, with 100% coverage of wild segments on chromosome1, while for chromosome 10, the coverage was only 33.3%. The mean number of homozygous and heterozygous donor segmentswere 3 (ranging from 0 to 7) and 4.7 (ranging from 1 to 14.5), respectively, and 31.6% of introgressed segments had sizes ofless than 10.5 cM. A total of 41 quantitative trait loci (QTLs) and two loci associated with pericarp coloration were identified. Thenumber of QTLs per trait ranged from 2 to 6. Phenotypic variance associated with each QTL varied from 9.1 to 52.2%, with an averageof 17.1%. For 11 (26.8%) of the QTLs detected in this study, the O. rufipogon-derived alleles contributed the desired agronomiceffect despite the overall inferior characteristics of the wild phenotype. Favorable alleles from the O. rufipogon accession were identifiedfor panicle number, panicle length, days to heading, secondary branches, spikelets per panicle, and 1,000-grain weight.
-
Yuan, Ping-Rong,Kim, Hyun-Jung,Chen, Qiong-Hua,Ju, Hong-Guang,Ji, Shi-Dong,Ahn, Sang-Nag 한국작물학회 2010 Journal of crop science and biotechnology Vol.13 No.4
Quantitative trait loci (QTL) associated with four milling recovery properties, two chemical properties, six paste properties of grain, and six textural parameters of cooked rice were identified using an introgression line (IL) population of rice developed from an interspecific cross over two years. The IL population consisted of 121 lines from a cross between wild rice (O. rufipogon Griff.) and a japonica cultivar. A total of 28 QTLs were identified for the 14 traits using inter mapping. Of these, 10 were significant over two years indicating that these QTLs are stable across years and environments. For eight (21 %) of the QTLs identified, the O. rufipogon-derived alleles contributed a desirable effect on amylose content, protein content, minimum viscosity, final viscosity, and consistency. Among these, pc3 for protein content and ac7 for amylose content were significant in both years and showed an $R^2$ value of 25.5 and 30.9%, respectively. The markers closely associated with these useful alleles can be used to trace the inheritance of specific chromosome segments in the IL population and also offer a starting point for map-based cloning of genes underlying these traits.
-
POINT TRANSVERSALS TO TRANSLATES OF A TRAPEZOID
Yuan, Li-Ping,Ren, Ren 한국전산응용수학회 2004 Journal of applied mathematics & informatics Vol.15 No.1
An m-transversal to a family of convex sets in the plane is an m-point set which intersects every members of the family. One of Grubaum's conjectures says that a planar family of translates of a convex compact set has a 3-transversal provided that any two of its members intersect. Recently the conjecture has been proved affirmatively (see [4]). In the present paper we provide a different and straightforward proof for the conjecture for the family of translates of a closed trapezoid in the plane and give several concrete 3-transversals.
-
Yuan, Ping,Chen, Tie-Hui,Chen, Zhong-Wu,Lin, Xiu-Quan Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.10
Purpose: To calculate the probability of one person's life-time death caused by a malignant tumor and provide theoretical basis for cancer prevention. Materials and Methods: The probability of one person's death caused by a tumor was calculated by a probability additive formula and based on an abridged life table. All data for age-specific mortality were from the third retrospective investigation of death cause in China. Results: The probability of one person's death caused by malignant tumor was 18.7% calculated by the probability additive formula. On the same way, the life-time death probability caused by lung cancer, gastric cancer, liver cancer, esophageal cancer, colorectal and anal cancer were 4.47%, 3.62%, 3.25%, 2.25%, 1.11%, respectively. Conclusions: Malignant tumor is still the main cause of death in one's life time and the most common causes of cancer death were lung, gastric, liver, esophageal, colorectal and anal cancers. Targeted forms of cancer prevention and treatment strategies should be worked out to improve people's health and prolong life in China. The probability additive formula is a more scientific and objective method to calculate the probability of one person's life-time death than cumulative death probability.
-
Ping-Rong Yuan,Shi-Dong Ji,안상낙,김현정,Qiong-Hua Chen,Hong-Guang Ju 한국작물학회 2010 Journal of crop science and biotechnology Vol.13 No.4
Quantitative trait loci (QTL) associated with four milling recovery properties, two chemical properties, six paste properties of grain, and six textural parameters of cooked rice were identified using an introgression line (IL) population of rice developed from an interspecific cross over two years. The IL population consisted of 121 lines from a cross between wild rice (O. rufipogon Griff.) and a japonica cultivar. A total of 28 QTLs were identified for the 14 traits using inter mapping. Of these, 10 were significant over two years indicating that these QTLs are stable across years and environments. For eight (21%) of the QTLs identified, the O. rufipogonderived alleles contributed a desirable effect on amylose content, protein content, minimum viscosity, final viscosity, and consistency. Among these, pc3 for protein content and ac7 for amylose content were significant in both years and showed an R² value of 25.5and 30.9%, respectively. The markers closely associated with these useful alleles can be used to trace the inheritance of specific chromosome segments in the IL population and also offer a starting point for map-based cloning of genes underlying these traits.
RISS
KISS연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
