检索结果-南通市图书馆

Advances in self-assembly-based circularly polarized luminescent materials

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第10期67卷 3247-3257页

作者： Bing-Hao Liu yang zong Na Liu zong-Quan Wu State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China The School of Pharmaceutical Sciences Jilin UniversityChangchun 130021China

Circularly polarized luminescent(CPL)materials have garnered attention for their diverse applications,including three-dimensional(3D)imaging,bio-imaging,chiral sensing,and other emerging ***,the fabrication of CPL-activated materials required the use of chiral luminescent small *** introduction of the idea of self-assembly has transformed the production of CPL-activated materials,providing new and promising opportunities for their *** utilizing self-assembly,it is now feasible to produce chiral nano-assemblies with CPL activity not only from chiral molecules but also from non-chiral substances and inorganic *** addition,self-assembly routes provide a way to increase the asymmetry factor,creating possibilities for additional refinement and adjustment of CPL material *** review offers a summary of the current progress and developments in the self-assembly of small molecules and polymers,with a specific emphasis on their capacity to create or enhance CPL in different *** aim of this review is to inspire interest in optical materials that are based on the principles of self-assembly.

关键词： circularly polarized luminescence photochemistry self-assembly chiral materials

EIGEN-TEMPERATURE MODEL FOR THE ANNUAL AIR TEMPERATURE MOVEMENT EVALUATION AND FORECAST

在线全文

学校读者我要写书评

暂无评论

International Journal of Modeling, Simulation, and Scientific Computing 2013年第3期4卷 30-53页

作者： zong-CHANG yang School of Information and Electronical Engineering Hunan University of Science and Technology Xiangtan 411201 P.R.China

Climate variability and its changes are issues of broader global *** study addresses the annual air temperature movement evaluation and forecasting based on principal component analysis(PCA).An Eigen-temperature model for describing the annual air temperature movement by employing PCA is *** for evaluation is generated by selecting principal orthogonal eigenvectors of covariance matrix of temperature *** principal eigenvectors are called“Eigen-temperatures”,since they are eigenvectors and each temperature movement is described by *** temperature movement is projected onto the subspace of eigenspace,and described by a linear combination of the ***,a forecast method for the temperature movement by employing the Eigen-temperatures is *** is implemented with polynomial curve fitting algorithm to estimate subsequent representation weights for the subsequent temperature movement with respect to the“Eigen-temperatures”generated by its previous temperature *** proposed Eigen-temperature model is applied to evaluation and forecasting for annual temperature movement at Tongchuan observation station of China from 1962 to 1971 and from 1994 to *** results agreeing well with actual observation values show workability of the *** analysis indicates its effectiveness that the proposed Eigen-temperature model is outperforming the classical AR model and the BP-ANN on the forecast tasks.

关键词： Principal component analysis annual air temperature movement Eigentemperature model.

Complex matrix interpolation model of the S-transform for electric load movement forecast

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Modeling, Simulation, and Scientific Computing 2014年第3期5卷 153-170页

作者： yang zong-Chang School of Information and Electrical Engineering Hunan University of Science and Technology Xiangtan P.R.China 411201

Electric load movement forecast is increasingly importance for the *** study addresses the load movement forecast modeling based on complex matrix interpolation of the S-transform(ST).In complex matrix of time-frequency representation of the ST,each row follows conjugate symmetric property and each column appears a certain degree of *** on these characteristics,a complex matrix interpolation method for the time-frequency representation of the ST is proposed to interpolate each row of the complex matrix based on the conjugate symmetric property,and then to perform nearestneighbor interpolation on each *** with periodic extension for daily and yearly electric load movement,a forecast model employing the complex matrix interpolation of the ST is *** forecast approach is applied to predict daily load movement of the European Network on Intelligent Technologies(EUNITE)load dataset and annual electric load movement of State Gird Corporation of China and its branches in 2005 and *** analysis indicates workability and effectiveness of the proposed method.

关键词： S-transform time-frequency representation complex matrix interpolation electric load movement forecast

IMPULP:A Hardware Approach for In-Process Memory Protection via User-Level Partitioning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Computer Science & Technology 2020年第2期35卷 418-432页

作者： yang-yang Zhao Ming-Yu Chen Yu-Hang Liu zong-Hao yang Xiao-Jing Zhu zong-Hui Hong Yun-Ge Guo State Key Laboratory of Computer Architecture Institute of Computing TechnologyChinese Academy of Sciences Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China Peng Cheng Laboratory Shenzhen 518055China

In recent years many security attacks occur when malicious codes abuse in-process memory *** to the increasing complexity,an application program may call third-party code which cannot be controlled by programmers but may contain security *** a result,the users have the risk of suffering information leakage and control flow ***,current solutions like Intel memory protection extensions(MPX)severely degrade performance,while other approaches like Intel memory protection keys(MPK)lack flexibility in dividing security *** this paper,we propose IMPULP,an effective and efficient hardware approach for in-process memory *** rationale of IMPULP is user-level partitioning that user code segments are divided into different security domains according to their instruction addresses,and accessible memory spaces are specified dynamically for each domain via a set of boundary *** instruction related to memory access will be checked according to its security domain and the corresponding boundaries,and illegal in-process memory access of untrusted code segments will be *** can be leveraged to prevent a wide range of in-process memory abuse attacks,such as buffer overflows and memory *** verification,an FPGA prototype based on RISC-V instruction set architecture has been *** present eight tests to verify the effectiveness of IMPULP,including five memory protection function tests,a test to defense typical buffer overflow,a test to defense famous memory leakage attack named Heartbleed,and a test for security *** execute the SPEC CPU2006 benchmark programs to evaluate the efficiency of *** performance overhead of IMPULP is less than 0.2%runtime on average,which is ***,the resource overhead is less than 5.5%for hardware modification of IMPULP.

关键词： in-process isolation memory protection out-of-bounds user-level partitioning

Characterization,Imprinting Status and Tissue Distribution of Porcine GTL2 Gene

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2009年第2期8卷 216-222页

作者： JIANG Cao-de yang zong-lin School of Life Science Southwest University Chongqing 400715 P.R.China

The callipyge （CLPG） phenotype, exhibiting polar overdominance （POD）, is an inherited skeletal muscle hypertrophy described in sheep. The callipyge locus maps to the distal portion of ovine chromosome 18 within the DLKI-GTL2 region and corresponds to human chromosome 14 and mouse chromosome 12. The POD phenomenon is confirmed to the homologous region of swine chromosome 7. In order to clone and investigate the expression of porcine GTL2 gene, DNA and RNA samples from 60-day-old F1 animals, generated with reciprocal crosses between Large White and Meishan breeds and their parents, were used. The authors showed that porcine GTL2 acted as a uoncoding RNA. cDNA samples exhibited maternal expression of the gene in the heart, liver, spleen, lung, kidney, stomach, small intestine, skeletal muscle, and fat in pigs, and a unique tissue-specific expression different from that of humans and mice. These results indicated that the gene was conserved in the pig, human, mouse, and bovine. It will be of interest to further study the gene functions in muscle growth and fat deposition.

关键词： imprinted gene GTL2 tissue specific expression pig

Hybrid ants-like search algorithms for P2P media streaming distribution in ad hoc networks

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第8期8卷 1191-1198页

作者： ZUO Dong-hong DU Xu yang zong-kai Department of Electronics and Information Engineering Huazhong Univerisity of Science and Technology Wuhan 430074 China

Media streaming delivery in wireless ad hoc networks is challenging due to the stringent resource restrictions,po-tential high loss rate and the decentralized architecture. To support long and high-quality streams,one viable approach is that a media stream is partitioned into segments,and then the segments are replicated in a network and served in a peer-to-peer(P2P) fashion. However,the searching strategy for segments is one key problem with the approach. This paper proposes a hybrid ants-like search algorithm(HASA) for P2P media streaming distribution in ad hoc networks. It takes the advantages of random walks and ants-like algorithms for searching in unstructured P2P networks,such as low transmitting latency,less jitter times,and low unnecessary traffic. We quantify the performance of our scheme in terms of response time,jitter times,and network messages for media streaming distribution. Simulation results showed that it can effectively improve the search efficiency for P2P media streaming distribution in ad hoc networks.

关键词： Ad hoc networks Media streaming distribution Search algorithms Peer to peer (P2P)

A metamodeling approach for pattern specification and management

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第10期14卷 743-755页

作者： Liang DOU Qiang LIU zong-yuan yang Department of Computer Science and Technology East China Normal University

The formal specification of design patterns is central to pattern research and is the foundation of solving various pattern-related *** this paper,we propose a metamodeling approach for pattern specification,in which a pattern is modeled as a meta-level class and its participants are meta-level *** of defining a new metamodel,we reuse the Unified Modeling Language(UML)metamodel and incorporate the concepts of Variable and Set into our approach,which are unavailable in the UML but essential for pattern *** approach provides straightforward solutions for pattern-related problems,such as pattern instantiation,evolution,and *** integrating the solutions into a single framework,we can construct a pattern management system,in which patterns can be instantiated,evolved,and implemented in a correct and manageable way.

关键词： Design patterns, Metamodeling, Pattern management system, Kermeta, Java modeling languages

Perspectives for Tibetan Plateau data assimilation

在线全文

学校读者我要写书评

暂无评论

National Science Review 2020年第3期7卷 495-499页

作者： zong-Liang yang Long Zhao Yujun He Bin Wang Department of Geological Sciences Jackson School of Geosciences (JSG) the University of Texas at Austin Key Laboratory of Regional Climate-Environment Research for Temperate East Asia (RCE-TEA) Institute of Atmospheric Physics Chinese Academy of Sciences School of Geographical Sciences Southwest University State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences Department of Earth System Science Tsinghua University College of Ocean Sciences University of Chinese Academy of Sciences

Known as the Third Pole, the Tibetan Plateau (TP) exhibits profound impacts on weather and climate on regional and global scales. Due to complex terrains and harsh environments, conventional observations over the TP a... 详细信息

关键词： Filter Kalman SCF Perspectives for Tibetan Plateau data assimilation

Masquelet technique using an allogeneic cortical bone graft for a large bone defect:A case report

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2025年第5期13卷 36-43页

作者： Hai-yang zong Yu Liu Xing Yin Wei Zhou Nan Li Department of Orthopedics The People’s Liberation Army Joint Logistic Support Force 920th HospitalKunming 650032Yunnan ProvinceChina Department of Orthopedics 96603 Military Hospital of PLAHuaihua 418000Hunan ProvinceChina

BACKGROUND The induced-membrane technique was initially described by Masquelet as an effective treatment for large bone defects,especially those caused by ***,we report a case of chronic osteomyelitis of the radius associated with a 9 cm bone defect,which was filled with a large allogeneic cortical bone graft from a bone *** bony union was achieved after 14 months of *** studies have used autogenous bone as the primary bone source for the Masquelet technique;in our case,the exclusive use of allografts is as successful as the use of autologous bone *** the advent of bone banks,it is possible to obtain an unlimited amount of allograft,and the Masquelet technique may be further improved based on this new way of bone *** SUMMARY In this study,we reported a case of repair of a long bone defect in a 40-year-old male patient,which was characterized by the utilization of allograft cortical bone combined with the Masquelet technique for the treatment of the patient's long bone defect in the *** patient's results of functional recovery of the forearm were surprising,which further deepens the scope of application of Masquelet technique and helps to strengthen the efficacy of Masquelet technique in the treatment of long bones *** Allograft cortical bone combined with the Masquelet technique provides a new method of treatment to large bone defect.

关键词： Osteomyelitis Bone defect Allogeneic cortical bone Masquelet technique Membrane induction technique Case report