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Tissue P systems with parallel rules on channels

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Progress in Natural science:Materials International 2007年第4期17卷 486-491页

作者： Xu Xian (Department of Computer science and technology, shanghai Jiao Tong university, shanghai 200240, china) Department of Computer science and technology Shanghai Jiaotong University Shanghai 200240 China

A new variant of P systems as an improvement of the original design is introduced. The P systems here allow parallelism in rules application on synapses (or links, channels), rendering the systems more efficient. We describe the execution mechanism of our P systems, make analysis on its computation power, and illustrate the running by an example.

关键词： tissue P systems parallel rules.

A new algorithm for degree-constrained minimum spanning tree based on the reduction technique

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Progress in Natural science:Materials International 2008年第4期18卷 495-499页

作者： Aibing Ning a, Liang Ma a, Xiaohua Xiong b a School of Management, university of shanghai for science and technology, shanghai 200093, china b College of Computer and Information, shanghai Second Polytechnic university, shanghai 201209, china School of Management University of Shanghai for Science and Technology Shanghai 200093 China College of Computer and Information Shanghai Second Polytechnic University Shanghai 201209 China

The degree-constrained minimum spanning tree (DCMST) is an NP-hard problem in graph theory. It consists of finding a spanning tree whose vertices should not exceed some given maximum degrees and whose total edge length is minimal. In this paper, novel math- ematical properties for DCMST are indicated which lead to a new reduction algorithm that can significantly reduce the size of the prob- lem. Also an algorithm for DCMST to solve the smaller problem is presented which has been preprocessed by reduction algorithm.

关键词： Degree-constrained minimum spanning tree Reduction algorithm Edge exchange technique Combinatorial optimization

Non-coding RNAs expression in SARS-CoV-2 infection:pathogenesis,clinical significance,and therapeutic targets

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Signal Transduction and Targeted Therapy 2024年第1期9卷 55-78页

作者： Xiaoxing liu Wandi Xiong Maosen Ye Tangsheng Lu Kai Yuan Suhua Chang Ying Han Yongxiang Wang lin Lu Yanping bao Peking university Sixth Hospital Peking University Institute of Mental HealthNHC Key Laboratory of Mental Health(Peking University)National Clinical Research Center for Mental Disorders(Peking University Sixth Hospital)100191 BeijingChina Peking-Tsinghua Center for Life sciences and PKU-IDG/McGovern institute for Brain Research Peking University100871 BeijingChina Key Laboratory of Tropical Biological Resources of Ministry of Education School of Pharmaceutical SciencesHainan University570228 HaikouChina Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of sciences&Yunnan Province KIZ/CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesKunming Institute of ZoologyChinese Academy of Sciences650204 KunmingYunnanChina National institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence Peking UniversityBeijing 100191China institute of Brain science and Brain-inspired Research Shandong First Medical University&Shandong Academy of Medical Sciences250117 JinanShandongChina Department of Neurology Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinanShandongChina School of Public Health Peking University100191 BeijingChina

The coronavirus disease 2019(COVID-19)pandemic has been looming globally for three years,yet the diagnostic and treatment methods for COVID-19 are still undergoing extensive exploration,which holds paramount importance in mitigating future *** non-coding RNAs(ncRNAs)display aberrations in the context of ***,microRNAs(miRNAs),long non-coding RNAs(lncRNAs),and circular RNAs(circRNAs)exhibit a close association with viral infection and disease *** this comprehensive review,an overview was presented of the expression profiles of host ncRNAs following SARS-CoV-2 invasion and of the potential functions in COVID-19 development,encompassing viral invasion,replication,immune response,and multiorgan deficits which include respiratory system,cardiac system,central nervous system,peripheral nervous system as well as long ***,we provide an overview of several promising host ncRNA biomarkers for diverse clinical scenarios related to COVID-19,such as stratification biomarkers,prognostic biomarkers,and predictive biomarkers for treatment *** addition,we also discuss the therapeutic potential of ncRNAs for COVID-19,presenting ncRNA-based strategies to facilitate the development of novel *** an in-depth analysis of the interplay between ncRNA and COVID-19 combined with our bioinformatic analysis,we hope to offer valuable insights into the stratification,prognosis,and treatment of COVID-19.

关键词： invasion therapeutic infection

DOUBLE S-BREAKING CUBIC TURNING POINTS AND THEIR COMPUTATION

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Journal of Computational Mathematics 1996年第1期14卷 8-22页

作者： R.S. Ye Z.H. Yang(Department of Mathematics, shanghai university of science and technology, shanghai,china) 上海大学数学系上海

In the paper we are concerned with double S-breaking cubic turning points of two-parameter nonlinear problems in the presence of Z(2)-symmetry. Three extended systems are proposed to determine double S-breaking cubic turning points. We show that there exist two kinds of singular point path passing through double S-breaking cubic turning point, One is the simple quadratic turning point path, the other is the pitchfork bifurcation point path.

关键词： DOUBLE S-BREAKING CUBIC TURNING POINTS AND THEIR COMPUTATION Pro

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70 Gbps PAM-4850-nm oxide-confined VCSEL without equalization and pre-emphasis

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Journal of Semiconductors 2024年第5期45卷 5-7页

作者： Anjin liu bao Tang Zhiyong Li Wanhua Zheng Key Laboratory of Optoelectronic Materials and Devices Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Accelink technologies co. LtdWuhan 430205China Key Laboratory of Solid-State Optoelectronics Information technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China

Directly modulated 850-nm vertical-cavity surface-emitting lasers(VCSELs)with the advantages of low cost,high modulation speed,good reliability,and low power consumption,are the key sources in the optical interconnects with multimode fibers for the supercomputers,data centers,and machine learning applications[1−3].Typically,non-return-tozero(NRZ)modulation format is used.

关键词： return confined fibers

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A Li_(3)P nanoparticle dispersion strengthened ultrathin Li metal electrode for high energy density rechargeable batteries

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Nano Research 2024年第5期17卷 4031-4038页

作者： lin Fu Xiancheng Wang bao Zhang Zihe Chen Yuanjian Li Yongming Sun Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy technology School of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China School of Physical and Mathematical sciences Nanyang Technological UniversitySingapore 637371Singapore institute of Materials Research and Engineering Agency for Science Technology and Research(A*STAR)Singapore 138634Singapore

Achievement of lithium(Li)metal anode with thin thickness(e.g.,≤30µm)is highly desirable for rechargeable high energy density ***,the fabrication and application of such thin Li metal foil electrode remain challenging due to the poor mechanical processibility and inferior electrochemical performance of metallic ***,mechanico-chemical synthesis of robust ultrathin Li/Li_(3)P(LLP)composite foils(~15µm)is demonstrated by employing repeated mechanical rolling/stacking operations using red P and metallic Li as raw *** in-situ formed Li+-conductive Li_(3)P nanoparticles in metallic Li matrix and their tight bonding strengthen the mechanical durability and enable the successful fabrication of free-standing ultrathin Li metal composite ***,it also reduces the electrochemical Li nucleation barrier and homogenizes Li plating/stripping *** matching to high-voltage LiCoO_(2),the full cell with a low negative/positive(N/P)capacity ratio of~1.5 offers a high energy density of~522 W·h·kg^(-1) at 0.5 C based on the mass of cathode and *** into account its facile manufacturing,potentially low cost,and good electrochemical performance,we believe that such an ultrathin composite Li metal foil design with nanoparticle-dispersion-strengthened mechanism may boost the development of high energy density Li metal batteries.

关键词： lithium metal anode high energy density battery mechanico-chemical synthesis ultrathin Li/Li_(3)P composite foil low negative/positive capacity ratio

Spatial continuity incorporated multi-attribute fuzzy clustering algorithm for blood vessels segmentation

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science china(Information sciences) 2010年第4期53卷 752-759页

作者： HAO JuTao1*, ZHAO JingJing2 & LI MingLu3 1School of Optical-Electrical and Computer Engineering, university of shanghai for science and technology, shanghai 200093, china 2Department of Electrical Engineering, shanghai university of Electric Power, shanghai 200090, china 3Department of Computer science and Engineering, shanghai Jiaotong university, shanghai 200240, china School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology Shanghai China Department of Electrical Engineering Shanghai University of Electric Power Shanghai China Department of Computer science and Engineering Shanghai Jiaotong University Shanghai China

A three-dimensional representation of vasculature can be extremely important in image-guided neurosurgery, pre-surgical planning. In this paper, a spatial continuity incorporated multi-attribute fuzzy clustering algorithm (MAFCM S) is proposed to segment entire blood vessels from TOF MRA images. This clustering method takes both the intensity information and the geometrical information into account, while most of the cur- rent clustering methods only deal with the former. In this method, a new dissimilarity measure, which integrates the intensity and the geometry shape dissimilarity, is introduced. Because of the presence of the geometrical information, the new measure is able to differentiate the pixels with similar intensity values within different geometrical shape structures. Experimental results show that the new algorithm can get better segmentation.

关键词： fuzzy c-means clustering scale space analysis spatial continuity blood vessel segmentation multi-attribute fuzzy clustering

Lie bialgebras of generalized Witt type

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science china Mathematics 2006年第4期49卷 533-544页

作者： SONG Guang’ai & SU Yucai College of Mathematics and Information science, Shandong institute of Business and technology, Yantai 264005, china Department of Mathematics, university of science and technology of china, Hefei 230026, china Department of Mathematics, shanghai Jiaotong university, shanghai 200240, china College of Mathematics and Information science Shandong Institute of Business and Technology Yantai China Department of Mathematics Shanghai Jiaotong University Shanghai China Department of Mathematics University of Science and Technology of China Hefei China

In this paper, all Lie bialgebra structures on the Lie algebras of generalized Witt type are considered. It is proved that, for any Lie algebra W of generalized Witt type, all Lie bialgebras on W are the coboundary triangular Lie bialgebras. As a by-product, it is also proved that the first cohomology group H1(W, W(?)W) is trivial.

关键词： Lie bialgebras, Yang-Baxter equation, Lie algebra of generalized Witt type.

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Protein Secondary Structure Prediction Using Dynamic Programming

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Acta Biochimica et Biophysica Sinica 2005年第3期37卷 167-172页

作者： Jing ZHAO Pei-Ming SONG Qing FANG Jian-Hua LUO School of Life science & technology,shanghai Jiaotong university,shanghai 200240,china shanghai Center for Bioinformation and technology,shanghai 200235,china Logistical Engineering university,Chongqing 400016,china School of Life science & technology Shanghai Jiaotong UniversityShanghai 200240 China shanghai Center for Bioinformation and technologyshanghai 200235 China Logistical Engineering universityChongqing 400016 China

In the present paper,we describe how a directed graph was constructed and then searched forthe optimum path using a dynamic programming approach,based on the secondary structure propensity ofthe protein short sequence derived from a training data *** protein secondary structure was thus pre-dicted in this *** average three-state accuracy of the algorithm used was 76.70%.

关键词： directed graph dynamic programming approach protein secondary structure