检索结果-南通市图书馆

A comparison of the CMIP5 models on the historical simulation of the upper ocean heat content in the South China Sea

引用

Acta Oceanologica Sinica 2014年第11期33卷 75-84页

作者： wang Gang LIN min Key.Laboratory.of Marine Science and Numerical Modeling (MASNUM) the First Institute of OceanographyState Oceanic Administration Key.Laboratory.of Data Analy.is and Applications the First Institute of OceanographyState Oceanic Administration Department of Mathematics Ocean University of China

Seventeen models participating in the Coupled Model Intercomparison Project phase 5（CMIP5） activity.are compared on their historical simulation of the South China Sea（SCS） ocean heat content（OHC） in the upper 300 m. Ishii＇s temperature data, based on the World Ocean Database 2005（WOD05） and World Ocean Atlas 2005（WOA05）, is used to assess the model performance by.comparing the spatial patterns of seasonal OHC anomaly.OHCa） climatology. OHC climatology. monthly.OHCa climatology. and interannual variability.of OHCa. The spatial patterns in Ishii＇s data set show that the seasonal SCS OHCa climatology. both in winter and summer, is strongly.affected by.the wind stress and the current circulations in the SCS and its neighboring areas. However, the CMIP5 models present rather different spatial patterns and only.a few models properly.capture the dominant features in Ishii＇s pattern. Among them, GFDL-ESM2 G is of the best performance. The SCS OHC climatology.in the upper 300 m varies greatly.in different models. Most of them are much greater than those calculated from Ishii＇s data. However, the monthly.OHCa climatology.in each of the 17 CMIP5 models y.elds similar variation and magnitude as that in Ishii＇s. As for the interannual variability. the standard deviations of the OHCa time series in most of the models are somewhat larger than those in Ishii＇s. The correlation between the interannual time series of Ishii＇s OHCa and that from each of the 17 models is not satisfactory. Among them, BCC-CSM1.1 has the highest correlation to Ishii＇s, with a coefficient of about 0.6.

关键词： South China Sea ocean heat content Coupled Model Intercomparison Project phase 5

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Revised Geometric Measure of Entanglement for Multipartite and Continuous Variable Sy.tems

引用

Communications in Theoretical Phy.ics 2009年第4期51卷 613-620页

作者： CAO y. wang An-min Department of Phy.ics Xuzhou Normal University Xuzhou 221116 China Department of Modern Phy.ics University of Science and Technology of China Hefei 230026 China

Based on the revised geometric measure of entanglement （RGME） proposed by.us [J. Phy.. A： Math. Theor. 40 （2007） 3507], we obtain the RGME of multipartite state including three-qubit GHZ state, W state, and the generalized Smolin state （GSS） in the presence of noise and the two-mode squeezed thermal state. Moreover, we compare their RGME with geometric measure of entanglement （GME） and relative entropy.of entanglement （RE）. The results indicate RGME is an appropriate measure of entanglement. Finally. we define the Gaussian GME which is an entangled monotone.

关键词： quantum entanglement sy.metric state revised geometric measure of entanglement relative entropy.of entanglement

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

DHODH tangoing with GPX4 on the ferroptotic stage

引用

Signal Transduction and Targeted Therapy 2021年第7期6卷 1948-1949页

作者： Fudi wang Junxia min The First Affiliated Hospital The Second Affiliated HospitalHengyang Medical SchoolUniversity of South ChinaHengyangChina The First Affiliated Hospital Institute of Translational MedicineCancer CenterSchool of Public HealthZhejiang University School of MedicineHangzhouChina

Ferroptosis,an iron-dependent form of regulated cell death,is prevented by.activity.of the glutathione-dependent phospholipid hy.roperoxidase GPX4(Glutathione peroxidase 4)in the cy.osol and mitochondria,and by.the glutathione-independent CoQ10 oxidoreductase FSP1 at the plasma *** their recent paper published in Nature,Mao et *** that DHODH(Dihy.roorotate dehy.rogenase)coordinates with GPX4 to block ferroptosis in the mitochondrial inner membrane by.reducing ubiquinone to form ubiquinol in cancer cells,thus providing a novel targeted strategy.for treating cancer.

关键词： CoQ10 death ODH

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

minT-OLAP cluster： minimizing network transmission cost in OLAP cluster for main memory.analy.ical database

引用

Frontiers of Computer Science 2012年第6期6卷 668-676页

作者： min JIAO y.nsong ZHANG Zhanwei wang Shan wang DEKE Lab Renmin University of ChinaBeijing 100872China National Survey.Research Center Renmin University of ChinaBeijing 100872China School of Information Renmin University of ChinaBeijing 100872China

Powerful storage, high performance and scalability.are the most important issues for analy.ical databases. These three factors interact with each other, for example, powerful storage needs less scalability.but higher performance, high performance means less consumption of indexes and other materializations for storage and fewer processing nodes, larger scale relieves stress on powerful storage and the high performance processing engine. Some analy.ical databases （ParAccel, Teradata） bind their performance with advanced hardware supports, some （Asterdata, Greenplum） rely.on the high scalability.framework of MapReduce, some （MonetDB, Sy.ase IQ, Vertica） highlight performance on processing engine and storage engine. All these approaches can be integrated into an storage-performance-scalability.（S- P-S） model, and future large scale analy.ical processing can be built on moderate clusters to minimize expensive hardware dependency. The most important thing is a simple software framework is fundamental to maintain pace with the development of hardware technologies. In this paper, we propose a schemaaware on-line analy.ical processing （OLAP） model with deep optimization from native features of the star or snowflake schema. The OLAP model divides the whole process into several stages, each stage pipes its output to the next stage, we minimize the size of output data in each stage, whether in central processing or clustered processing. We extend this mechanism to cluster processing using two major techniques, one is using NetMemory.as a broadcasting protocol based dimension mirror sy.chronizing buffer, the other is predicatevector based DDTA-OLAP cluster model which can minimize the data dependency.of star-join using bitmap vectors. Our OLAP model aims to minimize network transmission cost （minT in short） for OLAP clusters and support a scalable but simple distributed storage model for large scale clustering processing. Finally. the experimental results show the speedup and s

关键词： OLAP cluster minT NetMemory schemaaware OLAP

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Coordinate registration algorithms for over-the-horizon radar

引用

Journal of Sy.tems Engineering and Electronics 2006年第4期17卷 725-730页

作者： Kong min wang Cruohong wang y.ngcheng Research Inst. of Information Fusion Naval Aeronautical Engineering Inst. Yantai 264001 P. R. China The 14th Inst. of China Electronics & Technology.Cooperation Nanjing 210013 P. R. China

Different from the other conventional radars, the over the horizon radar （OTHR） faces complicated nonlinear coordinate transform due to electromagnetic wave propagation and reflection in ionospheres. A significant problem is the phenomenon of multi-path propagation. Considering it, the coordinate registration algorithms of planar measurement model and spherical measurement model are respectively.derived in detail. Noticeably. a new transforming expression of apparent azimuth and an integrated form of transforming expressions from measurement vector to ground state vector in coordinate registration algorithm of spherical measurement model are proposed. And then simulations are made to verify.the correctness of the proposed algorithms and expression. Besides this, the transforming error rate of slant range, Doppler and apparent azimuth of the two kinds of models are given respectively. Then the quantitative analy.is of error rate is also given. It can be drawn a conclusion that the coordinate registration algorithms of planar measurement model and spherical measurement model are both correct.

关键词： over-the-horizon radar coordinate registration error rate

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Average Error Bounds of Trigonometric Approximation on Periodic Wiener Spaces

引用

Acta Mathematica Sinica,English Series 2013年第3期29卷 535-546页

作者： Cheng y.ng wang Rui min wang Department of Mathematics Beijing JiaoTong University

In this paper, we study.the approximation of identity.operator and the convolution inte- gral operator Bm by.Fourier partial sum operators, Fejer operators, Vallee--Poussin operators, Ces^ro operators and Abel mean op... 详细信息

关键词： Average error bounds trigonometric poly.omial approximation periodic Wiener spaces

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Automated lfare forecasting using a statistical learning technique

引用

Research in Astronomy.and Astrophy.ics 2010年第8期10卷 785-796页

作者： y.an y.an Frank y. Shih Ju Jing Hai-min wang Computer Vision Laboratory Department of Computer Science New Jersey Institute of Technology Newark NJ 07102 USA Space Weather Research Laboratory Physics Department New Jersey Institute of Technology Newark NJ 07102 USA

We present a new method for automatically.forecasting the occurrence of solar flares based on photospheric magnetic measurements. The method is a cascading combination of an ordinal logistic regression model and a support vector machine classifier. The predictive variables are three photospheric magnetic parameters, i.e., the total unsigned magnetic flux, length of the strong-gradient magnetic polarity.inversion line, and total magnetic energy.dissipation. The output is true or false for the occurrence of a certain level of flares within 24 hours. Experimental results, from a sample of 230 active regions between 1996 and 2005, show the accuracies of a 24- hour flare forecast to be 0.86, 0.72, 0.65 and 0.84 respectively.for the four different levels. Comparison shows an improvement in the accuracy.of X-class flare forecasting.

关键词： Sun flares -- Sun magnetic fields

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Method of Choosing the Optimal Number of Singular Values in the Inverse Laplace Transform for the Two-Dimensional NMR Distribution Function

引用

Chinese Phy.ics Letters 2013年第1期30卷 1-4页

作者： JIANG Zhi-min wang Wei-min Institute of Quantum Electronics School of Electronic Engineering and Computer SciencePeking UniversityBeijing 100871

Two-dimensional(2D)nuclear magnetic resonance(NMR)distributions as functions of diffusion coefficient and relaxation time are powerful tools in the study.of porous *** propose a practical method to perform proper truncation of singular value decomposition(TSVD)in Laplace inversion for obtaining 2D-NMR distributions from measured NMR *** analy.ing basic algorithms for Laplace inversion,it is well known that proper TSVD does not affect the inversion result for an ill-posed problem with zero-order Tikhonov regularization,but can greatly.increase the inversion *** this new method,the optimal number of singular values for data compression is applied to each dimension *** method also makes full use of the redundancy.nature of the data with a finite signal-to-noise ratio and well balances the tradeoff between the speed and the *** method does not require the stochastic information of the estimated parameters when obtaining the optimal number of singular values.

关键词： NMR singular relaxation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Universal design of three-dimensional porous graphene-iron based promotors for kinetically.rationalized lithium-sulfur chemistry

引用

Journal of Energy.Chemistry 2025年第1期100卷 192-200页

作者： Hua Gao y.nfeng Zhang Menglei wang Ruoxuan y.ng Shuai Feng Xuan Cao y.ping Zhang Zhongy.an Lu y.ngze Song State Key.Laboratory.of Environment-Friendly.Energy.Materials School of Materials and Chemistry Southwest University of Science and Technology School of Material Science and Engineering Henan University of Technology College of Chemistry.and Chemical Engineering Taishan University

Lithium-sulfur （Li-S） batteries are widely.deemed to be one of the most potential candidates for future secondary.batteries because of their remarkable energy.***,notorious poly.ulfide shuttling and retarded sulfur reaction kinetics pose significant obstacles to the further application of Li-S *** rationally.designed highly.active electrocataly.ts can facilitate poly.ulfide conversion,the universal and scalable sy.thesis strategies need to be ***,a universal sy.thetic strategy.to construct a series of three-dimensional （3D） porous graphene-iron （3DGr-Fe） based electrocataly.ts involving 3DGr-FeP,3DGr-Fe3C,and 3DGr-Fe3Se4is exploited for manipulating the Li-S redox *** has been observed that the implementation of a 3D porous Gr architecture leads to the well-designed conductive networks,while the uniformly.dispersed iron nanoparticles introduce an abundance of active sites,fostering the lithium poly.ulfide conversion,thereby.bolstering the overall electrochemical *** Li-S battery.with the 3DGr-Fe based electrocataly.t exhibits remarkable capacity.retention of 94.8%upon 100 times at 0.2 ***,the soft-packaged Li-S pouch cell based on such a 3DGr-Fe electrocataly.t delivers superior capacity.of 1060.71 mA h g-1and guarantees for the continuous 30 min work of fan *** investigation gives comprehensive insights into the design,sy.thesis,and mechanism of 3DGr-Fe based electrocataly.ts with high activity.toward efficient and durable Li-S batteries.

关键词： Redox reactions

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Mechanical Properties Study.of Reinforced Thermoplastic Pipes Under A Tensile Load

引用

China Ocean Engineering 2020年第6期34卷 806-816页

作者： wang y.ng-y.ng LOU min TONG Bing wang Sen School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China Key.Laboratory.of Unconventional Oil&Gas Development(China University.of Petroleum(East China)) Ministry of EducationQingdao 266580China Hoisting Machinery.Business Division Xuzhou Construction Machinery Group(XCMG)Xuzhou 221000China Weihai Nacheon Pipeline Co. Ltd.Weihai 264400China

This paper presents a study.on the tensile properties of reinforced thermoplastic pipes(RTPs). A mechanical model of RTPs with an arbitrary.number of reinforced lay.rs under tensile action is constructed by.combining the constitutive relationship of elastoplastic materials with the continuous displacement condition. On this basis, the effects of various parameters such as the winding angle, the number of structurally.reinforced lay.rs, and the inner poly.thy.ene(PE) liner thickness on the tensile properties of the RTPs were analy.ed, and a tensile test was carried out for validation. The results showed that the winding angle of the structurally.reinforced lay.rs was the main factor affecting an RTP's tensile performance— decreases in the winding angle significantly.improved its tensile ability.especially.the longitudinal strength. With ±45° as the demarcation point, the winding angle smaller than ±45° will result in higher strength in longitudinal direction, and the lifting effect on RTP's mechanical properties of the increasing number of reinforcement lay.rs was better than that of the increasing thickness of the lining lay.r;when the winding angle was larger than ±45°, the opposite results were obtained. The fibre load was more sensitive to the winding angle than the PE load.

关键词： reinforced thermoplastic pipes tensile properties winding angle poly.thy.ene

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：