摘要：
To overcome the deficiencies of weak local search ability in genetic algorithms (GA) and slow global convergence speed in ant colony optimization (ACO) algorithm in solving complex optimization problems, the chaotic optimization method, multi-population collaborative strategy and adaptive control parameters are introduced into the GA and ACO algorithm to propose a genetic and ant colony adaptive collaborative optimization (MGACACO) algorithm for solving complex optimization problems. The proposed MGACACO algorithm makes use of the exploration capability of GA and stochastic capability of ACO algorithm. In the proposed MGACACO algorithm, the multi-population strategy is used to realize the information exchange and cooperation among the various populations. The chaotic optimization method is used to overcome long search time, avoid falling into the local extremum and improve the search accuracy. The adaptive control parameters is used to make relatively uniform pheromone distribution, effectively solve the contradiction between expanding search and finding optimal solution. The collaborative strategy is used to dynamically balance the global ability and local search ability, and improve the convergence speed. Finally, various scale TSP are selected to verify the effectiveness of the proposed MGACACO algorithm. The experiment results show that the proposed MGACACO algorithm can avoid falling into the local extremum, and takes on better search precision and faster convergence speed.
摘要：
This paper presents a hybrid differential evolution (DE) with quantum-behaved particle swarm optimization (QPSO) for the unmanned aerial vehicle (UAV) route planning on the sea. The proposed method, denoted as DEQPSO, combines the DE algorithm with the QPSO algorithm in an attempt to further enhance the performance of both algorithms. The route planning for UAV on the sea is formulated as an optimization problem. A simple method of pretreatment to the terrain environment is proposed. A novel route planner for UAV is designed to generate a safe and flyable path in the presence of different threat environments based on the DEQPSO algorithm. To show the high performance of the proposed method, the DEQPSO algorithm is compared with the real-valued genetic algorithm, DE, standard particle swarm optimization (PSO), hybrid particle swarm with differential evolution operator, and QPSO in terms of the solution quality, robustness, and the convergence property. Experimental results demonstrate that the proposed method is capable of generating higher quality paths efficiently for UAV than any other tested optimization algorithms.
通讯机构：
[Cao, Can] Cent S Univ, Sch Phys & Elect, Changsha 410083, Peoples R China.
关键词：
density functional theory, doping, Fermi level, graphene, Green's function methods, nanoribbons, spin polarised transport
摘要：
By using non-equilibrium Green's functions in combination with the density-functional theory, we investigate the spin transport properties of molecular junctions based on 3d transition terminated zigzag graphene nanoribbons. The results show that the electronic transport properties are strongly depending on the type of terminated atom at the edge of ribbon. The currents of spin-up and spin-down display different behaviors, and the spin-filter effects can be observed. These unconventional doping effects could be used to design novel nanospintronics devices. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4723832]
摘要：
Using the first-principles study, we calculate the electronic band structure of metallic carbon nanotubes (MCNTs) with B/N co-doping. We show the formation energies which suggest that the B/N co-doping configuration is the energetically stable structure. We find that the electronic structure properties depend on the doping concentration of MCNTs, as well as the doping position. Energy gap opens rapidly when the symmetry breaking of MCNTs happens. These unconventional eloping effects could be used to design novel nanoelectronic devices. (c) 2010 Elsevier B.V. All rights reserved.
期刊：
Annals of Nuclear Energy,2017年106:247-255 ISSN：0306-4549
通讯作者：
Jiang, Jianjun
作者机构：
[Jiang, Jianjun; Zhang, Li] Hunan Inst Technol, Sch Safety & Environm Engn, Hengyang 421002, Hunan, Peoples R China.;[Jiang, Jianjun; Wang, Yiqun; Zhang, Mengjia; Xie, Tian] Univ South China, Sch Econ & Management, Human Factors Inst, Hengyang 421001, Hunan, Peoples R China.;[Li, Min; Wu, Daqing] Univ South China, Sch Comp Sci & Technol, Hengyang 421001, Hunan, Peoples R China.;[Peng, Yuyuan] South China Univ Technol, Guangzhou Coll, Sch Comp Engn, Guangzhou 510830, Guangdong, Peoples R China.;[Peng, Jie] GuangDong Univ Finance & Econ, Informat Sci Coll, Guangzhou 510320, Guangdong, Peoples R China.
通讯机构：
[Jiang, Jianjun] Hunan Inst Technol, Sch Safety & Environm Engn, Hengyang 421002, Hunan, Peoples R China.;[Jiang, Jianjun] Univ South China, Sch Econ & Management, Human Factors Inst, Hengyang 421001, Hunan, Peoples R China.
关键词：
Human reliability<&wdkj&>Quantity of components<&wdkj&>Quick convergence search method<&wdkj&>Affinity error probability mapping function
摘要：
This is the second in a series of papers describing the optimal design method for a digital human computer interface of nuclear power plant (Npp) from three different points based on human reliability. The purpose of this series is to explore different optimization methods from varying perspectives. This present paper mainly discusses the optimal design method for quantity of components of the same factor. In monitoring process, quantity of components has brought heavy burden to operators, thus, human errors are easily triggered. To solve the problem, the authors propose an optimization process, a quick convergence search method and an affinity error probability mapping function. Two balanceable parameter values of the affinity error probability function are obtained by experiments. The experimental results show that the affinity error probability mapping function about human-computer interface has very good sensitivity and stability, and that quick convergence search method for fuzzy segments divided by component quantity has better performance than general algorithm. (C) 2017 Elsevier Ltd. All rights reserved.
期刊：
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics),2006年4088:590-595 ISSN：0302-9743
期刊：
Physics Letters, Section A: General, Atomic and Solid State Physics,2013年377(31-33):1905-1910 ISSN：0375-9601
通讯作者：
Long, Meng-Qiu
作者机构：
[Chen, Ling-Na; Long, Meng-Qiu; Cao, Can; Xu, Hui] Cent S Univ, Sch Phys & Elect, Inst Super Microstruct & Ultrafast Proc, Changsha 410083, Hunan, Peoples R China.;[Chen, Ling-Na] Univ South China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构：
[Long, Meng-Qiu] Cent S Univ, Sch Phys & Elect, Inst Super Microstruct & Ultrafast Proc, Changsha 410083, Hunan, Peoples R China.
关键词：
Electronic transport property<&wdkj&>Zigzag graphene nanoribbon heterojunction<&wdkj&>Edge hydrogenation<&wdkj&>Rectifying effect
摘要：
Using nonequilibrium Green's functions in combination with the density functional theory, we investigated the electronic transport behaviors of zigzag graphene nanoribbon (ZGNR) heterojunctions with different edge hydrogenations. The results show that electronic transport properties of ZGNR heterojunctions can be modulated by hydrogenations, and prominent rectification effects can be observed. We propose that the edge dihydrogenation leads to a blocking of electronic transfer, as well as the changes of the distribution of the frontier orbital at negative/positive bias might be responsible for the rectification effects. These results may be helpful for designing practical devices based on graphene nanoribbons. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
期刊：
Chinese Physics B,2010年19(9): 097301-1-097301-5 ISSN：1674-1056
通讯作者：
Xu Hui
作者机构：
[Xu Hui; Ouyang Fang-Ping; Ma Song-Shan; Chen Ling-Na; Xiao Jin; Wu Xiao-Zan] Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Hunan, Peoples R China.;[Chen Ling-Na] Univ S China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构：
[Xu Hui] Cent S Univ, Sch Phys Sci & Technol, Changsha 410083, Hunan, Peoples R China.
关键词：
transport properties;negative differential resistance;first-principles;crossed graphene nanoribbons
摘要：
By using first-principles calculations and nonequilibrium Green's function technique, we study elastic transport properties of crossed graphene nanoribbons. The results show that the electronic transport properties of molecular junctions can be modulated by doped atoms. Negative differential resistance (NDR) behaviour can be observed in a certain bias region, when crossed graphene nanoribbons are doped with nitrogen atoms at the shoulder, but it cannot be observed for pristine crossed graphene nanoribbons at low biases. A mechanism for the negative differential resistance behaviour is suggested.
作者：
Wu, X. Z.;Long, M. Q.*;Chen, L. N.;Cao, C.;Ma, S. S.;Xu, H.
期刊：
Physica E: Low-Dimensional Systems and Nanostructures,2012年45:82-85 ISSN：1386-9477
通讯作者：
Long, M. Q.
作者机构：
[Cao, C.; Wu, X. Z.] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China.;[Long, M. Q.; Xu, H.] Cent S Univ, Coll Sci & Technol, Sch Phys & Electon, Changsha 410083, Hunan, Peoples R China.;[Chen, L. N.] Univ S China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.
通讯机构：
[Long, M. Q.] Cent S Univ, Coll Sci & Technol, Sch Phys & Electon, Changsha 410083, Hunan, Peoples R China.
摘要：
Applying nonequilibrium Green’s functions in combination with the density functional theory, we investigated the effect of amino and hydroxyl groups on the transport property of the carbon atomic chains. The results show the conductance oscillation with the length and the parity of the carbon atomic chains, and the electronic transport properties can be modulated by the sites of amino and hydroxyl groups. And also, the negative differential resistance behaviors can be observed clearly. These phenomena may originate from the interaction of side groups with the carbon atomic chains and the change in coupling degree between the molecular orbitals and electrode states.
作者机构：
[Wang, Lin-Wei; Li, Yan] Capital Med Univ, Beijing Shijitan Hosp, Dept Surg Oncol, Beijing 100038, Peoples R China.;[Wang, Lin-Wei; Liu, Wen-Lou; Chen, Jia-Mei; Wu, Han; Li, Yan] Wuhan Univ, Zhongnan Hosp, Dept Oncol, Wuhan 430071, Peoples R China.;[Qu, Ai-Ping] Univ South China, Sch Comp Sci & Technol, Hengyang 421001, Peoples R China.;[Yuan, Jing-Ping] Wuhan Univ, Renmin Hosp, Dept Pathol, Wuhan 430060, Peoples R China.;[Liu, Juan] Wuhan Univ, Sch Comp, Wuhan 430072, Peoples R China.
摘要：
As a widely used proliferative marker, Ki67 has important impacts on cancer prognosis, especially for breast cancer (BC). However, variations in analytical practice make it difficult for pathologists to manually measure Ki67 index. This study is to establish quantum dots (QDs)-based double imaging of nuclear Ki67 as red signal by QDs-655, cytoplasmic cytokeratin (CK) as yellow signal by QDs-585, and organic dye imaging of cell nucleus as blue signal by 4',6-diamidino-2-phenylindole (DAPI), and to develop a computer-aided automatic method for Ki67 index measurement. The newly developed automatic computerized Ki67 measurement could efficiently recognize and count Ki67-positive cancer cell nuclei with red signals and cancer cell nuclei with blue signals within cancer cell cytoplasmic with yellow signals. Comparisons of computerized Ki67 index, visual Ki67 index, and marked Ki67 index for 30 patients of 90 images with Ki67 </= 10% (low grade), 10% < Ki67 < 50% (moderate grade), and Ki67 >/= 50% (high grade) showed computerized Ki67 counting is better than visual Ki67 counting, especially for Ki67 low and moderate grades. Based on QDs-based double imaging and organic dye imaging on BC tissues, this study successfully developed an automatic computerized Ki67 counting method to measure Ki67 index.
