期刊文献+
共找到2,898篇文章
< 1 2 145 >
每页显示 20 50 100
穿山甲(Manis Pentadact ylaaurita)的核型分析
1
作者 全国强 王宗仁 房利祥 《兽类学报》 CAS 1984年第2期89-92,共4页
穿山甲(Manis pentadactyla aurita)的核型尚未见报道过,我们在1982年观察了1只雄性穿山甲核型,现报道如下。 一、材料和方法 进行核型分析的穿山甲获自贵州,空运抵京饲养了数日,抽取其静脉血做淋巴细胞培养。培养液的配制是RPMI-1640... 穿山甲(Manis pentadactyla aurita)的核型尚未见报道过,我们在1982年观察了1只雄性穿山甲核型,现报道如下。 一、材料和方法 进行核型分析的穿山甲获自贵州,空运抵京饲养了数日,抽取其静脉血做淋巴细胞培养。培养液的配制是RPMI-1640和小牛血清按4∶1的比例混合,加入适量的谷氨酰胺溶液。PHA选用Difco PHA M型。培养温度为36℃,培养时间为72个小时。与此同时,我们还取其骨髓细胞作体外短期培养,培养温度为室温,培养时间为2小时。无论是淋巴细胞培养还是骨髓细胞短期培养均采用空气干燥法制片。 展开更多
关键词 穿山甲 活血祛瘀药 manis Pentadact ylaaurita 核型分析
暂未订购
Tempo-spatial rupture process of the 1997Mani, Xizang(Tibet), China earthquake of Ms=7.9 被引量:9
2
作者 许力生 陈运泰 《Acta Seismologica Sinica(English Edition)》 CSCD 1999年第5期495-506,共12页
An earthquake of Ms=7.4 occurred in Mani, Xizang (Tibet), China on November 8, 1997. The moment tensor ofthis earthquake was inverted using the long period body wave form data from China Digital Seismograph Network(CD... An earthquake of Ms=7.4 occurred in Mani, Xizang (Tibet), China on November 8, 1997. The moment tensor ofthis earthquake was inverted using the long period body wave form data from China Digital Seismograph Network(CDSN). The apparent source time functions (AS TFs) were retrieved from P and S waves, respectively, using thedeconvolution technique in frequency domain, and the tempo-spatial rupture process on the fault plane was imagedby inverting the azimuth dependent AS TFs from different stations. The result of the moment tensor inversionindicates that the P and T axes of earthquake-generating stress field were nearly horizontal, with the P axis in theNNE direction (29), the T axis in the SEE direction (122) and that the NEE-SWW striking nodal plane andNNW-SSE striking nodal plane are mainly left-lateral and right-lateral strike-slip, respectively; that this earthquakehad a scalar seismic moment of 3.4xl02o N. .m, and a moment magnitude of Mw=7.6. Taking the aftershock distribution into account, we proposed that the earthquake rupture occurred in the fault plane with the strike of 250,the dip of 88 and the rake of 19. On the basis of the result of the moment tensor inversion, the theoretical seismograms were synthesized, and then the AS T Fs were retrieved by deconvoving the synthetic seismograms fromthe observed seismograms. The A S T Fs retrieved from the P and S waves of different stations identically suggestedthat this earthquake was of a simple time history, whose ASTF can be approximated with a sine function with thehalf period of about 10 s. Inverting the azimuth dependent A S T Fs from P and S waveforms led to the imageshowing the tempo-spatial distribution of the rupture on the fault plane. From the 'remembering' snap-shots, therupture initiated at the western end of the fault, and then propagated eastward and downward, indicating an overallunilateral rupture. However, the slip distribution is non-uniform, being made up of three sub-areas, one in thewestern end, about 10 km deep ('western area'), another about 55 kin away from the western end and about 35 Iondeep ('eastern area'), the third about 30 km away from the western end and around 40 km deep ('central area').The total rupture area was around 70 km long and 60 km wide. From the 'forgetting' snap-shots, the rupturingappeared quite complex, with the slip occurring in different position at different time, and the earthquake being ofthe characteristics of 'healing pulse'. Another point we have to stress is that the locations in which the ruptureinitiated and terminated were not where the main rupture took place. Eventually, the static slip distribution wascalculated, and the largest slip values of the three sub-areas were 956 cm, 743 cm and 1 060 cm, for the western.eastern and central areas, respectively. From the slip distribution, the rupture mainly distributed in the fault about70 km eastern to the epicenter; from the aftershock distribution. however, the aftershocks were very sparse in thewest to the epicenter while densely clustered in the east to the epicenter It indicated that the Maul Ms=7.9 earthquake was resulted from the nearly eastward extension of the NEE-SWW to nearly E-W striking fault in thenorthwestern Tibetan plateau. 展开更多
关键词 mani earthquake Xizang(Tibet) tempo-spatial rupture process source time function
在线阅读 下载PDF
A Characteristic Analysis of the Dynamic Evolution of Preseismic-Coseismic-Postseismic Interferometric Deformation Fields Associated with the M 7.9 Earthquake of Mani,Tibet in 1997 被引量:8
3
作者 SHAN Xinjian ZHANG Guohong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2007年第4期587-592,共6页
By using the D-InSAR technique, we have acquired the temporal-spatial evolution images of preseismic.cosesimci-postseismic interferometric deformation fields associated with the M 7.9 earthquake of Mani, Tibet on 8 No... By using the D-InSAR technique, we have acquired the temporal-spatial evolution images of preseismic.cosesimci-postseismic interferometric deformation fields associated with the M 7.9 earthquake of Mani, Tibet on 8 November 1997. The analysis of these images reveals the relationships between the temporal-spatial evolution features of the interferometric deformation fields and locking, rupturing, and elastic restoring of the source rupture plane, which represent the processes of strain accumulation, strain release, and postseismic restoration. The result shows that 10 months prior to the Mani event, a left-lateral shear trend appeared in the seismic area, which was in accordance with the earthquake fault in nature. The quantity of local deformation on the north wall was slightly larger than that on the south wall, and the deformation distribution area of the north wall was relatively large. With the event impending, the deformation of the south wall varied increasingly, and the deformation center shifted eastward. Two and half monthd before the event, the west side of the fault was still locked while the east side began to slide, implying that the whole fault would rupture at any moment. These features can be regarded as short-term precursors to this earthquake. Within the period from 16 April 1996 to two and half months before the earthquake, the most remarkable deformation zones appeared in the north and south walls, which were parallel to and about 40 km apart from the fault, with accumulated local displacements of 344 mm and 251 mm on the north and south walls, respectively. The south wall was the active one with larger displacements. Five months after the earthquake, the distribution feature of interferometric fringes was just opposite to that prior to the event, expressing evident right-lateral shear. The recovered displacements are -179 mm on the north wall and -79 mm on the south wall, close to the east side of the fault. However, in the area of the south wall far from the fault there still existed a trend of sinistral motion. The deformation of the north wall was small but recovered fast in a larger area, while the active south wall began to recover from the east section of the fault toward the WSW. 展开更多
关键词 D-INSAR mani earthquake evolution of deformation field of major earthquakes earthquake prediction
在线阅读 下载PDF
圈养马来穿山甲(Manis javanica)在1年内连续产2胎 被引量:3
4
作者 余经裕 彭建军 马晓华 《林业科技通讯》 2016年第5期51-52,共2页
圈养马来穿山甲(Manis javanica)进行人工饲养繁殖研究,在圈养条件下的同一只马来穿山甲在1年内连续产2胎,对其进行了详细的记录,填补了马来穿山甲繁殖参数的空白。
关键词 马来穿山甲 manis JAVANICA 圈养 人工繁殖
原文传递
Higher degree moment tensor inversion of Mani earthquake using far-field broadband recording 被引量:2
5
作者 刘瑞丰 陈运泰 +3 位作者 成瑾 杨辉 韩炜 牟磊育 《Acta Seismologica Sinica(English Edition)》 CSCD 2000年第3期241-248,共8页
Breakthrough point source model, extended earthquake source model is used to calculate more seismic source parameters in this paper. We express seismic source using higher degree moment tensors, to reduce a Iarge numb... Breakthrough point source model, extended earthquake source model is used to calculate more seismic source parameters in this paper. We express seismic source using higher degree moment tensors, to reduce a Iarge number terms originally presenting in higher degree moment tensor representation, Haskell rupture model is used. We in verted the source parameters of Mani earthquake in Tibet using broad-band body wave of 32 stations of Global Seismograph Network (GSN), the results show that it is a strike-slip fault, rupture direction is 75°, rupture duration is 19 s, the fault plan is φ=77°, δ5=88°, A=0°, the auxiliare plane is φ=347°, δ=90°, k=178°, and the fault dimension is 47 km×28 km. These results will give new quantitative data for earth dynamics and have practical meaning for seismic source tomography research. 展开更多
关键词 mani earthquake higher degree moment tensor seismic source parameters broad band DIGITIZATION
在线阅读 下载PDF
一例雌性马来穿山甲(Manis javanica)生殖系统大体解剖 被引量:1
6
作者 张富华 邹翠云 +2 位作者 吴诗宝 汪巧云 李韶山 《野生动物学报》 北大核心 2016年第4期325-329,共5页
马来穿山甲(Manis javanica)是一种特殊的极度濒危动物,但其生殖系统结构一直未被描述。本文通过对在华南师范大学穿山甲人工救护与保育研究基地死亡的雌性马来穿山甲DY7进行大体解剖,对其生殖系统形态结构进行了描述。DY7生殖系统由卵... 马来穿山甲(Manis javanica)是一种特殊的极度濒危动物,但其生殖系统结构一直未被描述。本文通过对在华南师范大学穿山甲人工救护与保育研究基地死亡的雌性马来穿山甲DY7进行大体解剖,对其生殖系统形态结构进行了描述。DY7生殖系统由卵巢、输卵管、子宫、阴道、尿生殖前庭、阴唇和阴蒂组成。子宫类型为双间子宫,纠正了以前其为双角子宫的说法。DY7左右两卵巢重均为0.30 g,长径分别为1.080 cm和1.026 cm,短径分别为0.860 cm和0.800 cm;左右输卵管长分别为3.150 cm和2.930 cm;左右子宫角长分别为5.472 cm和5.226 cm,子宫体和子宫颈长分别为0.470 cm和0.582 cm;阴道和尿生殖前庭长分别为1.990 cm和1.720 cm。本文对于了解马来穿山甲的繁殖习性、提高圈养马来穿山甲繁殖管理水平、发展人工繁殖技术具有重要意义。 展开更多
关键词 马来穿山甲 圈养 繁殖习性 繁殖生物学
在线阅读 下载PDF
Chinese pangolins (Manis pentadactyla) are not functionally extinct in China 被引量:2
7
作者 Zhi-Cheng Liu Peng Cen +4 位作者 Jian-Kun Sun Fu-Hua Zhang Amna Mahmood Chen Lei Shi-Bao Wu 《Zoological Research(Diversity and Conservation)》 2024年第1期79-81,共3页
DEAR EDITOR,The key features of functional extinction include continuous reproductive failure,lack of new recruitment,and persistent population decline(Jarićet al.,2016;Roberts et al.,2017).However,the conclusion of f... DEAR EDITOR,The key features of functional extinction include continuous reproductive failure,lack of new recruitment,and persistent population decline(Jarićet al.,2016;Roberts et al.,2017).However,the conclusion of functional extinction for the Chinese pangolin(Manis pentadactyla)by the China Biodiversity Conservation and Green Development Foundation(CBC-GDF)based on preliminary field information is unconvincing as they did not assess reproductive function or new individual recruitment of Chinese pangolin populations(Supplementary Materials). 展开更多
关键词 EXTINCTION Roberts manis
在线阅读 下载PDF
中国穿山甲华南亚种(Manis pentadactyla aurita)仔兽出生记录 被引量:13
8
作者 吴诗宝 《青海师范大学学报(自然科学版)》 1998年第1期40-42,共3页
本文首次报道了中国穿山甲华南亚种仔兽出生的记录,测量了仔兽的躯体及体重,讨论了中国穿山甲华南亚种的发情交配季节,妊娠期、产仔期、胎仔数。
关键词 穿山甲 繁殖 妊娠期 中国穿山甲 华南亚种
在线阅读 下载PDF
Hamilton's Gradient Estimate for a Nonlinear Parabolic Equation on Riemannian Manifolds 被引量:1
9
作者 Xinrong JIANG Caisheng LIAO 《Journal of Mathematical Research with Applications》 CSCD 2015年第4期435-447,共13页
In this paper, we give a local Hamilton's gradient estimate for a nonlinear parabol- ic equation on Riemannian manifolds. As its application, a Harnack-type inequality and a Liouville-type theorem are obtained.
关键词 Hamilton's gradient estimate nonlinear parabolic equation Riemannian mani-fold
原文传递
中国穿山甲(Manis pentadactyla)肾脏的形态与组织结构
10
作者 谭超 刘进辉 +3 位作者 王水莲 朱开明 姜卫星 任朝钰 《经济动物学报》 CAS 2015年第1期41-43,共3页
为探讨中国穿山甲肾脏的大体解剖和组织结构,掌握其生理功能,为其人工饲养提供理论依据,采用常规大体解剖方法和苏木精-伊红(H-E)染色技术对穿山甲肾脏进行研究。结果表明:中国穿山甲肾脏呈浅棕红色,为表面光滑的多乳头肾,其平均纵径(44... 为探讨中国穿山甲肾脏的大体解剖和组织结构,掌握其生理功能,为其人工饲养提供理论依据,采用常规大体解剖方法和苏木精-伊红(H-E)染色技术对穿山甲肾脏进行研究。结果表明:中国穿山甲肾脏呈浅棕红色,为表面光滑的多乳头肾,其平均纵径(44.00±0.34)mm,平均横径(26.00±0.87)mm,单肾平均重(20.00±0.33)g;肾被膜为双层的纤维膜,相对于豪猪中国穿山甲肾实质中肾小体数量少而且小,肾血管球较小而肾小囊腔相对较大,肾小管数量相对较多。中国穿山甲的肾属低等哺乳动物肾,其肾血管球过滤形成原尿的功能较低而肾小管重吸收和分泌作用较强。 展开更多
关键词 中国穿山甲 肾脏 显微结构
在线阅读 下载PDF
Taxonomical outlines of bio-diversity of Karnataka in a 14th century Kannada toxicology text Khagendra Mani Darpana
11
作者 Sathyanarayana Bhat Kumaraswamy Udupa 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2013年第8期668-672,共5页
Origin of ancient Indian toxicology can be dated back to vedic literature.Toxins of both animate and inanimate world were very well understood during the era.Rig and Atharva vedic texts describe such details.After cla... Origin of ancient Indian toxicology can be dated back to vedic literature.Toxins of both animate and inanimate world were very well understood during the era.Rig and Atharva vedic texts describe such details.After classifying such toxins,Charaka Samhitha,thebasic literature of Indian Medicine used gold and ghee as panaceas to counter act them.Ayurveda considers toxicology as one among the eight specialized branches of medical wisdom.Unfortunately,the available literature on this is very limited.Moreover,they have been discussed briefly in Charaka and Sushrutha Samhitha.Mangarasa I,a Jain scholar who lived on the foothills of the Western Ghats,in Southern India in 1350 A.D.,felt this vacuum and composed an independent,elaborate Kannada text on toxicology.His less known text Khagendra Mani Darpana(KMD)is the first ever documented complete text on toxicology in the world.Medieval Indian wisdom on plant and animal diversities are very well reflected in this unique toxicological text.Centuries past to Linnean era,KMD gives vivid descriptions on zoological and botanical diversities of the time.This astonishing fact is an evidence of our ancestor's curiosities about the nature around them.A critical overview of the bio-diversity described in KMD text is discussed in this paper. 展开更多
关键词 BIODIVERSITY Khagendra mani Darpana TOXICOLOGY
在线阅读 下载PDF
The Clinical Observation of 80 Patients with Diseases of Lumbar Vertebrae Treated by Reinforcing and Reducing Methods of Mani
12
作者 Wang Junzao(Pingding COunty Suyu Coal Mine in Shanxi Province,Shanxi 045209, China) 《中国针灸》 CAS CSCD 北大核心 1995年第S2期281-282,共2页
TheClinicalObservationof80PatientswithDiseasesofLumbarVertebraeTreatedbyReinforcingandReducingMethodsofManip... TheClinicalObservationof80PatientswithDiseasesofLumbarVertebraeTreatedbyReinforcingandReducingMethodsofManipulationSelectedCo... 展开更多
关键词 OBSERVATION DISEASES LUMBAR mani Methods CLINICAL PATIENTS REDUCING Reinforcing The
暂未订购
Extracting coseismic deformation of the 1997 Mani earthquake with differential interferometric SAR
13
作者 单新建 马瑾 +1 位作者 王长林 柳稼航 《Acta Seismologica Sinica(English Edition)》 CSCD 2002年第4期431-438,共8页
Interferometry Synthetic Aperture Radar (InSAR) is a kind of new earth observation technique and great development has been made in the recent ten years. In the paper, InSAR and Differential Interferometric Synthetic ... Interferometry Synthetic Aperture Radar (InSAR) is a kind of new earth observation technique and great development has been made in the recent ten years. In the paper, InSAR and Differential Interferometric Synthetic Aperture Radar (D-InSAR) are generally introduced; then the factors affecting the data accuracy are primarily discussed. The 1997 Mani earthquake was selected as an example to obtain the coseismic deformation field with the three-pass differential interferometric processing method. The results show that the coseismic deformation field is about 200 km in length and 115 km in width. The interferometric fringes spread in the area with the NEE-trending seismogenic fault the Margaichaka fault as the center and they are primarily parallel to the fault. Based on the analysis to the interferogram, the seismogenic fault can be divided into three segments. The whole fault is about 110 km and the length of each segment from the west to the east is about 23 km, 60 km and 26 km. The maximum uplifting displacement in the side-looking direction near the seismic center is about 162.4 cm, the maximum subsiding displacement in the side-looking direction in the western part of the fault is about 103.6 cm, and the maximum horizontal surface dislocation near the seismic center is about 7.96 m. 展开更多
关键词 INSAR mani earthquake coseismic deformation
在线阅读 下载PDF
A Review of the Ecology and Biology of Chinese Pangolin(Manis pentadactyla)
14
作者 Jingyu YU Jianjun PENG +2 位作者 Jun ZENG Xilin YIN Jing ZHU 《Agricultural Science & Technology》 CAS 2015年第12期2770-2773,共4页
Chinese pangolin(Manis pentadactyla) has important value in Chinese medicine,economy and ecology.At present,Chinese pangolin is about to go extinct due to over hunting and habitat destruction,which has caused a dramat... Chinese pangolin(Manis pentadactyla) has important value in Chinese medicine,economy and ecology.At present,Chinese pangolin is about to go extinct due to over hunting and habitat destruction,which has caused a dramatic decline in the wild population.Breeding Chinese pangolin in captivity is very difficult and has not succeeded yet.This paper is to review the wild population,habitat,foraging,activity rhythm,breeding and physiology of Chinese pangolin.It provides theoretical basis of ecology and biology for the protection and artificial domestication of Chinese pangolin.Meanwhile,given the demands of protection,future research directions are suggested. 展开更多
关键词 Chinese Pangolin manis pentadactyla) ECOLOGY BIOLOGY PROTECTION
在线阅读 下载PDF
Co-seismic ground deformation and source parameters of Mani M7.9 earthquake inferred from spaceborne D-InSAR observation data 被引量:15
15
作者 SHAN Xinjian1,MA Jin1,WANG Changlin2,LIU Jiahang1,SONG Xiaoyu1 & ZHANG Guifang1 1.Institute of Geology and Laboratory of Tectonophysics,China Seismological Bureau,Beijing 100029,China 2.Institute of Remote Sensing Application,Chinese Academy of Sciences,Beijing 100101,China 《Science China Earth Sciences》 SCIE EI CAS 2004年第6期481-488,共8页
We obtain the co-seismic ground deformation field of the Mani M7.9 earthquake on November 8, 1997 through three-pass differential interferometric processing. Then we get the geometric and kinematics parameters of this... We obtain the co-seismic ground deformation field of the Mani M7.9 earthquake on November 8, 1997 through three-pass differential interferometric processing. Then we get the geometric and kinematics parameters of this event by the elastic half-space model and forward modeling with the InSAR data. The following results have been obtained: (i) The deformation fields on both sides of the seismogenic fault are affected by the co-seismic deformation field even in 110 km away from the fault. The loss of phase coherence belt caused by the zone of ground rupture crosses the image from east to west with a length of an area 110 km. (ii) The maximum horizontal displacement caused by the earthquake reaches 7.96 m. (iii) The earthquake fault can be divided into four parts, and the deformation field of the middle two parts is bigger than that of the other two, with lengths of 27 km and 37 km, respectively. And their average sliding values on the rupture surface are 6500 mm and 6000 mm, respectively, and their depths both are 35 km. The segment of 27 km length is the major rupture surface of this earthquake. The west part and the east part of the fault have lengths of 23 km and 26 km, respectively. The sliding value of the west one is 4000 mm and that of the east one is 5800 mm. They extend to depths of 20 km and 18 km, respectively. 展开更多
关键词 D-InSAR surface deformation field in SIGHT direction mani earthquake characteristics of EARTHQUAKE fault.
原文传递
Characteristics of the multiple replicon plasmid IncX1-X1 in multidrug-resistant Escherichia coli from Malayan pangolin(Manis javanica)
16
作者 Fang JI Shelan LIU +12 位作者 Xue WANG Jianan ZHAO Jiayue ZHU Jianchun YANG Chenglin ZHANG Zhongxin JIA Ruili ZHAO Guocheng HU Jing WANG Jianhua QIN Gang LI Bin WU Chengmin WANG 《Integrative Zoology》 SCIE CSCD 2023年第2期289-298,共10页
Potential zoonotic pathogens may be transmitted from wildlife to humans through the illegal wild meat trade,which has become a pressing issue.However,research on the antimicrobial resistance genes(ARGs)of Malayan pang... Potential zoonotic pathogens may be transmitted from wildlife to humans through the illegal wild meat trade,which has become a pressing issue.However,research on the antimicrobial resistance genes(ARGs)of Malayan pangolin(Manis javanica)intestinal bacteria is limited.Here,multidrug-resistant Escherichia coli M172-1(ST354)isolated from Malayan pangolin feces in 2019 was found to be resistant to 13 antibiotics.BGWAS analysis revealed 4 plas-mids,namely,pM172-1.1,pM172-1.2,pM172-1.3,and pM172-1.4,in the isolate.The pM172-1.2,pM172-1.3,and pM172-1.4 plasmids carried ARGs,namely,IncHI2-HI2A,IncX1-X1,and IncX1,respectively.pM172-1.3 and pM172-1.4 contained intact IntI1 integrons(Is26/IntI1/arr2/cmlA5/blaOXA-10/ant(3′′)-IIA/dfrA14/Is26).No-tably,pM172-1.3 resulted from the fusion of 2 pM172-1.4 copies and carried many more ARGs.In addition to pM172-1.3 from the same host,other drug-resistant bacteria(E.coli M159-1(ST48),E.coli S171-1(ST206),and Klebsiella pneumoniae S174-1(ST2354))in the same Malayan pangolin fecal samples also carried 3 plasmids with 100%gene coverage of pM172-1.4 and 99.98%identity.Therefore,ARGs in IncX1 might spread in the intestinalflora of Malayan pangolin and between species via the illegal food chain,posing a potential threat to public health and safety. 展开更多
关键词 ARG manis javanica multiple-replicon plasmid IncX1-X1 plasmid IncX1
暂未订购
“一多互补”思维视角下“一带一路”倡议的理念阐释与传播进路 被引量:1
17
作者 宣长春 《南京社会科学》 北大核心 2025年第6期86-95,127,共11页
百年未有之大变局之下,“一带一路”倡议通过“一多互补”的关系性思维范式,为重构国际舆论秩序提供了突破西方“一多二元”认知框架的新视野。这一思维范式植根于中国传统哲学和丝路文明历史,通过主客体相互依存的价值逻辑解构静态二... 百年未有之大变局之下,“一带一路”倡议通过“一多互补”的关系性思维范式,为重构国际舆论秩序提供了突破西方“一多二元”认知框架的新视野。这一思维范式植根于中国传统哲学和丝路文明历史,通过主客体相互依存的价值逻辑解构静态二元对立,将国际舆论秩序置于多中心流动、多维度互构的关系性世界之中,最终指向多元文明共同体的建构。因此“一带一路”倡议推动国际舆论场呈现出双重转向:在结构维度打破“中心—边缘”的等级秩序,形成去中心化的传播网络;在主体维度超越零和博弈思维,构建基于共同利益的协商机制。基于此,“一带一路”倡议国际传播应通过重视关系网络,锚定并发挥“中间人”优势;立足区域国别,构建差异化的传播策略;以文化为切入口,通过回归日常生活,促进多元价值融合实现文化“贯通”,进而推动中国智慧编织出超越西方现代性叙事的全球治理新图景。 展开更多
关键词 “一带一路” 一多互补 关系性思维 共同体 国际传播
原文传递
基于动态分布计算资源的昂贵多目标优化算法
18
作者 张晶 裴东兴 +1 位作者 马瑾 沈大伟 《高技术通讯》 北大核心 2025年第8期861-867,共7页
代理模型辅助的多目标优化算法广泛用于求解评价昂贵的多目标优化问题,其中,采用样本更新模型是提高算法性能的必要过程。然而,传统方法未对模型的状态进行评估而同时更新所有模型,浪费了大量的计算资源。针对该问题,本文提出基于动态... 代理模型辅助的多目标优化算法广泛用于求解评价昂贵的多目标优化问题,其中,采用样本更新模型是提高算法性能的必要过程。然而,传统方法未对模型的状态进行评估而同时更新所有模型,浪费了大量的计算资源。针对该问题,本文提出基于动态分布计算资源的昂贵多目标优化算法,该算法提出了自适应选择模型更新策略。具体地,依据模型对当前种群估值的不确定度来判断模型的性能,当种群中解不确定度的中值大于均值时,该目标函数模型被选择进行更新;当种群中的解不确定度的中值小于均值时,该模型不被更新。为了验证该策略的有效性,将该策略用于代理模型辅助的自适应贝叶斯优化算法(an adaptive Bayesian approach to surrogate-assisted evolutionary algorithm,ABSAEA)和代理模型辅助的参考向量引导的进化算法(surrogate-assisted reference vector guided evolutionary algorithm,KRVEA)中,并且在DTLZ函数上进行实验。实验结果表明,该算法可以显著降低昂贵多目标优化算法的计算复杂度。 展开更多
关键词 进化算法 昂贵多目标优化问题 代理模型 填充准则 不确定度
在线阅读 下载PDF
从罗整庵《困知记》看理学与心学之异——兼论其理气论与其定位 被引量:1
19
作者 高海波 Hou Jian(Translated) 《孔学堂》 2025年第2期65-76,186-198,共25页
从罗整庵的为学经历来看,其早年学禅悟道,后来转向理学,对其程朱理学“性即理”问题的研磨体认,对理解其思想具有至关重要的作用。也就是说,学禅的经历使其能够把握心学与禅学的要点,即有见于心,无见于性。这一点导致了他对佛学与心学... 从罗整庵的为学经历来看,其早年学禅悟道,后来转向理学,对其程朱理学“性即理”问题的研磨体认,对理解其思想具有至关重要的作用。也就是说,学禅的经历使其能够把握心学与禅学的要点,即有见于心,无见于性。这一点导致了他对佛学与心学的批评。当然,整庵之所以能够对佛学、心学进行深入的批评,与他对程朱性理之学艰苦探索、涣然自信的经历是分不开的。从整庵的《困知记》来看,其核心思想就是心性之辨,进一步可以归结为人心道心相为性情体用的新说。总的来看,整庵是历史上从哲学理论、修养方法上系统深入辨析程朱陆王之异的最重要的思想家之一。其批判佛教、心学的深度与广度,后人罕有匹敌。另外,本文认为,“性理”问题才是整庵思想的核心,理气一物论则是其性理论的关联理论,因此从这个意义上说,整庵仍是个理学家,而不是一个气本论思想家。 展开更多
关键词 心性 理气 性理 理一分殊 人心道心
在线阅读 下载PDF
基于自适应采样策略的模糊分类代理辅助进化算法
20
作者 李二超 吴煜 《郑州大学学报(工学版)》 北大核心 2025年第2期51-59,共9页
针对基于分类代理辅助进化算法模型管理效率不高和如何有效降低真实函数评估次数的问题,提出了一种基于自适应采样策略的模糊分类代理辅助进化算法。首先,算法通过帕累托支配关系筛选样本来构造代理模型;其次,采用基于转移的密度估计策... 针对基于分类代理辅助进化算法模型管理效率不高和如何有效降低真实函数评估次数的问题,提出了一种基于自适应采样策略的模糊分类代理辅助进化算法。首先,算法通过帕累托支配关系筛选样本来构造代理模型;其次,采用基于转移的密度估计策略提高选择压力,兼顾收敛性与多样性,同时利用十折交叉验证得到精度信息用来划分状态;最后,设计了一种自适应模型管理策略,其考虑当前种群的收敛性、多样性和不确定性,并根据不同精度状态采用有针对性的采样方式,该算法能够在保证整体性能的前提下,合理减少真实评估次数。为验证所提算法性能,将该算法与其他4种算法在MaF、WFG测试集和汽车侧面碰撞设计与驾驶室设计的实际工程问题上进行了分析对比实验,实验结果表明:所提算法在有限次评估条件下,在解决昂贵多目标优化问题时具有较好的竞争力。 展开更多
关键词 代理辅助进化算法 代理模型 昂贵多目标优化问题 模型管理
在线阅读 下载PDF
上一页 1 2 145 下一页 到第
使用帮助 返回顶部