|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Homotopic mapping solving method for gain fluency of a laser pulse amplifier显示文摘The model for gain fluency of a laser pulse amplifier is studied. Using the homotopic mapping method, firstly, the system of the original model is packed up standardization; secondly, introducing a homotopic mapping, taking the property of the mapping, inducing a contrived parameter, the solving of a nonlinear problem translates into the solving of a linear problem. Then the approximate expressions of the solution for the corresponding model are obtained. And the precision for the approximate solution is compared. It illuminates that the obtained approximate solution using the homotopic mapping method possesses higher approximate degree. At one time, the expansion of solution through the homotopic mapping method can be kept in the analytic operation. Thus it also enables us through differential and integral operations to obtain other physics behavior for the gain fluency of laser pulse amplifier. | MO JiaQi1,2 1 Anhui Normal University, Wuhu 241000, China 2 Division of Computational Science, E-Institutes of Shanghai Universities, at SJTU, Shanghai 200240, China | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，7： | 124 |
| 2 | 西方现代教学理念与策略之剖析显示文摘当代西方教育理念的发展趋势已转入以建构主义学习理论为指导,以学生为中心,以问题为基础的学习(Problem-basedlearning,PBL)、个案学习(Casestudy)、概念图形成(Conceptmapping)、团队工作(Teamwork)及网络学习(e-learning),是国际上流行的几种发展学生自主性学习、主动学习、个性化学习的教学策略与方法,有效学习评估体系特别是过程性评估是实施高等教育改革的必要保证。 | 陈萍 臧伟进 | 2005 | 中国高等医学教育2005，，3： | 118 |
| 3 | QTL IciMapping:Integrated software for genetic linkage map construction and quantitative trait locus mapping in biparental populations显示文摘QTL Ici Mapping is freely available public software capable of building high-density linkage maps and mapping quantitative trait loci(QTL) in biparental populations. Eight functionalities are integrated in this software package:(1) BIN: binning of redundant markers;(2) MAP: construction of linkage maps in biparental populations;(3) CMP: consensus map construction from multiple linkage maps sharing common markers;(4) SDL: mapping of segregation distortion loci;(5) BIP: mapping of additive, dominant, and digenic epistasis genes;(6) MET: QTL-by-environment interaction analysis;(7) CSL: mapping of additive and digenic epistasis genes with chromosome segment substitution lines; and(8) NAM: QTL mapping in NAM populations. Input files can be arranged in plain text, MS Excel 2003, or MS Excel 2007 formats. Output files have the same prefix name as the input but with different extensions. As examples, there are two output files in BIN, one for summarizing the identified bin groups and deleted markers in each bin, and the other for using the MAP functionality. Eight output files are generated by MAP, including summary of the completed linkage maps, Mendelian ratio test of individual markers, estimates of recombination frequencies, LOD scores, and genetic distances, and the input files for using the BIP, SDL,and MET functionalities. More than 30 output files are generated by BIP, including results at all scanning positions, identified QTL, permutation tests, and detection powers for up to six mapping methods. Three supplementary tools have also been developed to display completed genetic linkage maps, to estimate recombination frequency between two loci,and to perform analysis of variance for multi-environmental trials. | Lei Meng Huihui Li Luyan Zhang Jiankang Wang | 2015 | The Crop Journal2015，3，3： | 174 |
| 4 | 四川天宝山铅锌矿床硫化物微量元素组成:LA-ICPMS研究显示文摘'川滇黔接壤铅锌矿集区'是我国西南大面积低温成矿域的重要组成部分,对于其中铅锌矿床是否属于MVT型矿床存在较大争议。本文以该矿集区中代表性矿床——四川天宝山矿床为例,通过LA-ICPMS原位元素分析,结合元素Mapping,以认识该矿床中闪锌矿和方铅矿微量元素组成特征及其赋存状态。研究表明,矿床中闪锌矿以富集Cd、Ge贫Fe、Mn、In、Sn、Co为特征,这些元素均以类质同象形式赋存于闪锌矿中,但含量变化范围较大,这可能与其成矿流体属于低温混合流体有关,这类盆地卤水流体在长期和长距离运移过程中,流经不同基底地层,活化出其中不同微量元素,因此成分变化较大,但以低温元素为主。此外,矿床中闪锌矿Ge和Cu呈现较好正相关关系,暗示其与Zn置换方式为:nC u^(2+)+Ge^(2+)(n+1)Zn^(2+),这可能是该矿床富集Ge的重要原因之一;矿床中方铅矿以富集Ag、Sb贫Bi为特征,含微量Cd和Tl,类质同象是这些元素主要赋存形式,其置换方式为(Ag)^(1+)+(Sb)^(3+)2Pb^(2+);矿床中Ge主要赋存于闪锌矿中,而方铅矿中不含Ge。总体上,本矿床硫化物微量元素组成与MVT型矿床基本一致,明显有别于喷流沉积型矿床、岩浆热液型矿床和远源夕卡岩型矿床,其成矿温度属于低温范围,成矿流体运移方向可能为深部→浅部。结合其矿床地质地球化学特征,本文认为天宝山铅锌矿床属于MVT型矿床,但其中闪锌矿中富集Cu,而方铅矿中富集Ag,可能暗示其形成具有一定特殊性。 | 叶霖 李珍立 胡宇思 黄智龙 周家喜 樊海峰 DANYUSHEVSKIY Leonid | 2016 | 岩石学报2016，32，11： | 61 |
| 5 | J2EE数据持久层的解决方案显示文摘在基于J2EE项目的开发过程中,数据持久层的设计往往是一个棘手的问题。该文在分析3种主流解决方案的基础上,介绍了开源O-R 映射开源项目Hibernate,并且对J2EE服务器端编程开发架构进行了比较,探讨了采用Hibernate开发架构的技术优势。 | 田珂 谢世波 方马 | 2003 | 计算机工程2003，29，22： | 76 |
| 6 | Knowledge domain and emerging trends in Alzheimer’s disease: a scientometric review based on CiteSpace analysis显示文摘Alzheimer’s disease is the most common cause of dementia.It is an increasingly serious global health problem and has a significant impact on individuals and society.However,the precise cause of Alzheimer’s disease is still unknown.In this study,11,748 Web-of-Science-indexed manuscripts regarding Alzheimer’s disease,all published from 2015 to 2019,and their 693,938 references were analyzed.A document co-citation network map was drawn using CiteSpace software.Research frontiers and development trends were determined by retrieving subject headings with apparent changing word frequency trends,which can be used to forecast future research developments in Alzheimer’s disease. | Shuo Liu Ya-Ping Sun Xu-Ling Gao Yi Sui | 2019 | Neural Regeneration Research2019，14，9： | 59 |
| 7 | Identification and mapping of genes for improving yield from Chinese common wild rice (O.rufipogon Griff.) using advanced backcross QTL analysis显示文摘To identify useful genes from wild rice which have been lost or weakened in cultivated rice has become more and more important for modern breeding strategy. In this study, a BC4 population derived from 94W1, an accession of common wild rice (Oryza rufipogon Griff.) from Dongxiang in Jiangxi Province of China, as the donor, and a high-yielding Indica cultivar (O. sativa L.), 'Guichao 2', as the recipient, was used to identify quantitative trait loci (QTL) associated with yield and its components. Based on the analysis for the genotype of BC4F1 population with 87 SSR markers distributed throughout the genome and investigation of the plant height, yield and yield components of BC4F2, a total of 52 QTLs, were detected. Of 7 QTLs associated with grain yield per plant, 2 QTLs on chromosome 2 and chromosome 11 for grain yield, explaining 16% and 11% of the phenotypic variance respectively, were identified. The alleles from Dongxiang common wild rice in those two loci could increase the yield of 'Guichao 2' by | Dejun Li Chuanqing Sun Yongcai Fu Cheng Li Zuofeng Zhu Liang Chen Hongwei Cai Xiangkun Wang | 2002 | Chinese Science Bulletin2002，47，18： | 39 |
| 8 | Susceptibility weighted imaging: Clinical applications and future directions显示文摘Susceptibility weighted imaging(SWI) is a recently developed magnetic resonance imaging(MRI) technique that is increasingly being used to narrow the differential diagnosis of many neurologic disorders. It exploits the magnetic susceptibility differences of various compounds including deoxygenated blood, blood products, iron and calcium, thus enabling a new source of contrast in MR. In this review, we illustrate its basic clinical applications in neuroimaging. SWI is based on a fully velocity-compensated, high-resolution, three dimensional gradientecho sequence using magnitude and phase images either separately or in combination with each other, in order to characterize brain tissue. SWI is particularly useful in the setting of trauma and acute neurologic presentations suggestive of stroke, but can also characterize occult low-flow vascular malformations, cerebral microbleeds, intracranial calcifications, neurodegenerative diseases and brain tumors. Furthermore, advanced MRI post-processing technique with quantitative susceptibility mapping, enables detailed anatomical differentiation based on quantification of brain iron from SWI raw data. | Ahmet Mesrur Halefoglu David Mark Yousem | 2018 | World Journal of Radiology2018，10，4： | 32 |
| 9 | China's wetland change (1990-2000) determined by remote sensing显示文摘Two wetland maps for the entire China have been produced based on Landsat data acquired around 1990 and 2000. Wetlands in China have been divided into 3 broad categories with 15 sub-categories except rice fields. In 1990, the total wetland area in China was 355208 km2 whereas in 2000 it dropped to 304849 km2 with a net loss of 50360 km2. During an approximate 10-year period, inland wetland reduced from 318326 to 257922 km2, coastal wetland dropped from 14335 to 12015 km2, while artificial wetland increased from 22546 to 34911 km2. The greatest natural wetland loss occurred in Heilongjiang, Inner Mon- golia, and Jilin with a total loss of over 57000 km2 of wetland. In western China, over 13000 km2 of wetlands were newly formed in Xinjiang, Tibet, and Qinghai. About 12000 km2 of artificial wetlands were also added for fish farm and reservoir constructions. The newly formed wetlands in western China were caused primarily by climate warming over that region whereas the newly created artificial wetlands were caused by economic developments. China’s wetland loss is caused mainly by human activities. | Peng Gong ZhenGuo Niu Xiao Cheng KuiYi Zhao DeMin Zhou JianHong Guo Lu Liang XiaoFeng Wang DanDan Li HuaBing Huang et al. | 2010 | Science China Earth Sciences2010，53，7： | 28 |
| 10 | 北京山区植被覆被率遥感制图与景观格局分析——以门头沟区为例显示文摘准确、快速地获取植被覆盖状况信息是北京山区生态恢复和建设的关键与重点。本文在FCDMappingmodel的原理和方法基础上,利用TM图像对北京门头沟区植被覆被率展开调查和制图应用研究,并利用FRAGSTATS软件对所得的植被覆盖等级图从斑块大小、斑块数、斑块密度、斑块平均面积、分形维数和聚集度等角度进行了空间格局的剖析。 | 李晓琴 孙丹峰 张凤荣 | 2003 | 国土资源遥感2003，15，1： | 24 |
| 11 | GENERALIZED H-KKM TYPE THEOREMS IN H-METRIC SPACES WITH APPLICATIONS显示文摘The new notions of H-metric spaces and generalized H-KKM mappings were introduced. Some generalized H-KKM type theorems for generalized H-KKM mappings with finitely metrically compactly closed values and finitely metrically compactly open values were established in H-metric spaces. These theorems generalize recent results of Khamsi and Yuan. As applications, some Ky Fan type matching theorems for finitely metrically compactly open covers and finitely metrically compactly closed covers, fixed point theorems and minimax inequality are obtained in H-metric spaces. These results generalize a number of known results in recent literature. | DING Xie-ping(丁协平) XIA Fu-quan(夏福全) | 2001 | Applied Mathematics and Mechanics(English Edition)2001，22，10： | 23 |
| 12 | Images on Locally Separable Metric Spaces | Lin Shou (Department of Mathematics,Ningde Teachers’ College,Fujian 352100,China)Liu Chuan Dai Mumin (Department of Mathematics,Guangxi University,Nanning 530004,China) | 1997 | Acta Mathematica Sinica,English Series1997，13，1： | 23 |
| 13 | Hibernate在Struts中的研究和应用显示文摘介绍了一些数据持久化机制,研究和分析了Hibernate在Struts中的应用,提出了一个在Struts中实现数据持久化的持久层框架,提高 了代码的复用性及软件开发的效率。 | 施兴健 徐良贤 | 2004 | 计算机工程2004，30，B12： | 21 |
| 14 | Research on Key Technologies of Precise InSAR Surveying and Mapping Applications Using Automatic SAR Imaging显示文摘Precise interferometric synthetic aperture radar (InSAR) is a new intelligent photogrammetric technology that uses automatic imaging and processing means. Precise InSAR has become the most efficient satellite surveying and mapping (SASM) method that uses the interferometric phase to create a global digital elevation model (DEM) with high precision. In this paper, we propose the application of systematic InSAR technologies to SASM. Three key technologies are proposed: calibration technology, data processing technology and post-processing technology. First, we need to calibrate the geometric and interferometric parameters including the azimuth time delay, range time delay, and atmospheric delay, as well as baseline errors. Second, we use the calibrated parameters to create a precise DEM. One of the important procedures in data processing is the determination of phase ambiguities. Finally, we improve the DEM quality through the joint use of the block adjustment method, long and short baseline combination method and descending and ascending data merge method. We use 6 sets of TanDEM-X data covering Shanxi to conduct the experiment. The root mean square error of the final DEM is 5.07 m in the mountainous regions. In addition, the low coherence area is 0.8 km 2. The result meets the China domestic SASM accuracy standard at both the 1∶50 000 and 1∶25 000 measurement scales. | Xinming TANG Tao LI Xiaoming GAO Qianfu CHEN Xiang ZHANG | 2019 | Journal of Geodesy and Geoinformation Science2019，2，2： | 20 |
| 15 | A refinement about estimation of expansion coefficients for normalized biholomorphic mappings显示文摘A refining estimation of homogeneous expansion for f is discussed, where f belongs to a subclass of all normalized biholomorphic mappings defined on the unit polydisk in Cn or the unit ball in complex Banach spaces, and x = 0 is a zero of order k + 1 of f(x) - x. Moreover, an estimation of homogeneous expansion for subordinate mappings defined on the unit ball in complex Banach spaces is also given. | LIU Taishun LIU Xiaosong | 2005 | Science China Mathematics2005，48，7： | 18 |
| 16 | Molecular mapping of Verticillium wilt resistance QTL clustered on chromosomes D7 and D9 in upland cotton显示文摘Verticillium wilt is a destructive disease with international consequences for cotton production. Breeding broad-spectrum resistant cultivars is considered to be one of the most effective means for reducing crop losses. A resistant cotton cultivar,60182,was crossed with a susceptible cultivar,Jun-mian 1,to identify markers for Verticillium resistance genes and validate the mode of its inheritance. Genetic segregation analysis for Verticillium wilt resistance was evaluated based upon infected leaf percentage in the seedling stage using major gene-polygene mixed inheritance models and joint analysis of P1,P2,F1,B1,B2 and F2 populations obtained from the cultivar cross. We found that resistance of upland cotton cultivar 60182 to isolates BP2,VD8 and T9,and their isoconcentration mixture was controlled by two major genes with additive-dominance-epistatic effects,and the inheritance of the major gene was dominant. Furthermore,a genetic linkage map was constructed using F2 segregating population and resistance phenotypic data were obtained using F2:3 families inoculated with different isolates and detected in different developmental stages. The genetic linkage map with 139 loci was comprised of 31 linkage groups covering 1165 cM,with an average distance of 8.38 cM between two markers,or 25.89% of the cotton genome length. From 60182,we found 4 QTL on chromosome D7 and 4 QTL on D9 for BP2,5 QTL on D7 and 9 QTL on D9 for VD8,4 QTL on D7 and 5 QTL on D9 for T9 and 3 QTL on D7 and 7 QTL on D7 for mixed pathogens. The QTL mapping results revealed that QTL clusters with high contribution rates were screened simultaneously on chromosomes D9 and D7 by multiple interval mapping (CIM),whether from resistance phenotypic data from different developmental stages or for different isolates. The result is consistent with the genetic model of two major genes in 60182 and suggests broad-spectrum resistance to both defoliating isolates of V. dahliae and nondefoliating isolates. The markers associated with resistance QTL may facilitate the use of Verticillium wilt resistance genes in improving breeding programs for cotton. | JIANG Feng,ZHAO Jun,ZHOU Lei,GUO WangZhen & ZHANG TianZhen National Key Laboratory of Crop Genetics & Germplasm Enhancement,Cotton Research Institute,Nanjing Agricultural University,Nanjing 210095,China | 2009 | Science China(Life Sciences)2009，52，9： | 18 |
| 17 | STUDY ON MIXED MODEL OF NEURAL NETWORK FOR FARMLAND FLOOD/DROUGHT PREDICTION显示文摘The paper concerns a flood/drought prediction model involving the continuation of time seriesof a predictand and the physical factors influencing the change of predictand.Attempt is made toconstruct the model by the neural network scheme for the nonlinear mapping relation based onmulti-input and single output.The model is found of steadily higher predictive accuracy by testingthe output from one and multiple stepwise predictions against observations and comparing theresults to those from a traditional statistical model. | 金龙 罗莹 郭光 林振山 | 1997 | Acta meteorologica Sinica1997，11，3： | 18 |
| 18 | 一种新的证据总结方法--证据图简介显示文摘证据图(Evidence Mapping)最早源于美国耶鲁大学系统评价补充与替代医学相关证据的研究,是将全面查找、科学分析、系统总结、高度概括、准确展示补充与替代医学研究全貌的方法称为Evidence Mapping。2006年,澳大利亚开展了"青少年心理健康"的证据图研究。2007年,The Global Evidence Mapping Initiative在澳大利亚成立,并开展脊柱损伤和颅脑外伤的证据图研究[4];截至目前, | 李伦 杨克虎 田金徽 孙甜甜 张朋 移康 田宏亮 | 2011 | 中国循证儿科杂志2011，6，3： | 18 |
| 19 | 对心脏磁共振学会及欧洲心脏病学会磁共振工作组心肌T1 mapping和细胞外容积量化共识的解读显示文摘随着影像学技术的发展,我们已经可以在活体水平下测量细胞外间隙,这项技术在心血管疾病的诊断治疗和预后判断方面有重大意义,在2013年10月心脏磁共振学会及欧洲心脏病学会磁共振工作组对T1 mapping及细胞外容积定量测量提出共识,旨在指导磁共振成像基于细胞外间隙评估的临床实践与科学研究,现分析点评该共识的主要内容,希望能进一步在国内推广该技术的应用。 | 崔辰 赵世华 | 2014 | 心血管病学进展2014，35，3： | 16 |
| 20 | Mission decision-making method of multi-aircraft cooperatively attacking multi-target based on game theoretic framework显示文摘Coordinated mission decision-making is one of the core steps to effectively exploit the capabilities of cooperative attack of multiple aircrafts. However, the situational assessment is an essential base to realize the mission decision-making. Therefore, in this paper, we develop a mission decision-making method of multi-aircraft cooperatively attacking multi-target based on situational assessment. We have studied the situational assessment mathematical model based on the Dempster-Shafer(D-S) evidence theory and the mission decision-making mathematical model based on the game theory. The proposed mission decision-making method of antagonized airfight is validated by some simulation examples of a swarm of unmanned combat aerial vehicles(UCAVs)that carry out the mission of the suppressing of enemy air defenses(SEAD). | Yao Zongxin Li Ming Chen Zongji Zhou Rui | 2016 | Chinese Journal of Aeronautics2016，29，6： | 16 |
您所在的机构暂未开通此部分的功能，请联系管理员