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味青斋敦煌秘籍佚卷存目点勘及其价值 被引量:1
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作者 李际宁 《敦煌学辑刊》 1995年第1期49-54,共6页
味青斋敦煌秘籍佚卷存目点勘及其价值李际宁1991年《敦煌研究》第4期上刊登了萧新祺先生的文章──《佚名(味青斋敦煌秘籍卷存目>》,和李正宇、杨森两先生附于其后的《检对记》。以往,在敦煌遗书流散历史的调查中,从未有人提... 味青斋敦煌秘籍佚卷存目点勘及其价值李际宁1991年《敦煌研究》第4期上刊登了萧新祺先生的文章──《佚名(味青斋敦煌秘籍卷存目>》,和李正宇、杨森两先生附于其后的《检对记》。以往,在敦煌遗书流散历史的调查中,从未有人提到“味青斋”名号,萧先生《味青斋敦... 展开更多
关键词 吴和尚 敦煌学 敦煌遗书 佚卷 古文尚书 麻纸 目点 《大正藏》 秘籍 图书馆
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一种弹目交会最近点的探测算法 被引量:5
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作者 娄文忠 刘建丰 《探测与控制学报》 CSCD 北大核心 2001年第4期11-13,21,共4页
提出一种可用于地雷引信对目标进行探测的新方法—能量比较法。能量比较法是利用目标发出的各种有用信号 ,从中提取出能量信息 ,并根据能量的变化趋势判断弹药相对目标的运动情况。同时 ,从理论上分析能量比较法的工程可行性 ,并将它与... 提出一种可用于地雷引信对目标进行探测的新方法—能量比较法。能量比较法是利用目标发出的各种有用信号 ,从中提取出能量信息 ,并根据能量的变化趋势判断弹药相对目标的运动情况。同时 ,从理论上分析能量比较法的工程可行性 ,并将它与常用的过零检测方法进行比较 。 展开更多
关键词 信号处理 能量比较法 过零检测法 地雷引信 交会最近
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广东省第三届群众戏剧花会金奖剧目点评
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《广东艺术》 1999年第6期57-59,共3页
《扶贫媳妇》是一出具有强烈的喜剧性的小粤剧。它的喜剧因素建立在一连串的巧合和误会之中。 首先作者所设置的戏剧情境很巧。这一天,老山叔要迎接盼望多年的未来儿媳妇;村长却来通知扶贫队员要来他家。村长为了村里能得到一笔扶贫款,... 《扶贫媳妇》是一出具有强烈的喜剧性的小粤剧。它的喜剧因素建立在一连串的巧合和误会之中。 首先作者所设置的戏剧情境很巧。这一天,老山叔要迎接盼望多年的未来儿媳妇;村长却来通知扶贫队员要来他家。村长为了村里能得到一笔扶贫款,为他想出了一个刀切豆腐的“两面光”的对策:扶贫队来时,装贫扮苦;儿媳到来,装富扮有。这样的情节, 展开更多
关键词 群众戏剧 广东省 主人公 喜剧性 小品创作 戏剧情境 喜剧因素 目点 花会 金奖
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关于云南社会林业选点的建议
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作者 乌莱温.泰其勇 左停 《林业与社会》 1994年第2期15-15,共1页
基于我在中国西南地区的考察,联系到社会林业项目点的选择,对项目组选点提出以下意见。 我建议项目组在选点时应把短期的实施与社会林业发展和林地管理的长期目标联系起来。因此,建议把金沙江流域分成三个地区,划分标准是根据林地的危... 基于我在中国西南地区的考察,联系到社会林业项目点的选择,对项目组选点提出以下意见。 我建议项目组在选点时应把短期的实施与社会林业发展和林地管理的长期目标联系起来。因此,建议把金沙江流域分成三个地区,划分标准是根据林地的危机范围率,可分为低危机区、中危机区和高危机区。在考虑这些危机的时候应该把森林土地和森林生态的保护、管理与开发结合起来。这些分类可以指导项目组对于特殊的地区提出社会林业的计划。 展开更多
关键词 社会林业 云南社会 危机 目点 建议项 森林恢复 中国西南地区 管理与开发 森林退化
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行业特色高校外语“3+”培养模式创新与实践——以西安某高校高起点班为例
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作者 张姗姗 《高教学刊》 2018年第7期11-13,共3页
文章在高校人才培养多元化的趋势和大学英语改革的新背景下,以西安某行业特色型高校为例,论述了高起点本科生英语培养方案、目标及课程设置。并通过社会调查和课堂教学实践构建了一个针对高水平本科生的外语培养及教学模式,试图解决目... 文章在高校人才培养多元化的趋势和大学英语改革的新背景下,以西安某行业特色型高校为例,论述了高起点本科生英语培养方案、目标及课程设置。并通过社会调查和课堂教学实践构建了一个针对高水平本科生的外语培养及教学模式,试图解决目前理工科院校大学英语课程设置不合理及教学模式单一的现象,为当前的高校的外语教育和外语改革提供一定的借鉴和参考作用。 展开更多
关键词 行业特色高校 高起学生 外语培养 “3+”模式
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Phylogenetic Relationships of the Pentatomomorpha (Hemiptera: Heteroptera) Inferred from Nuclear 18S rDNA Sequences 被引量:9
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作者 李红梅 邓日强 王珣章 《Zoological Research》 CAS CSCD 北大核心 2006年第3期307-316,共10页
Sequences from a region of the nuclear ribosomal 18S rDNA gene of approximately 1 912 base pairs (bp) were used to generate a molecular phylogeny for the Pentatomomorpha based on 53 species representing 21 putative ... Sequences from a region of the nuclear ribosomal 18S rDNA gene of approximately 1 912 base pairs (bp) were used to generate a molecular phylogeny for the Pentatomomorpha based on 53 species representing 21 putative families. Phylogenetic analyses using the most parsimony method (MP), maximum likelihood method (ML), and neighbor joining method (NJ) showed strong support that the Pentatomomorpha lineage is a monophyly and the superfamily Aradoidea is a sister group to the remainder of the Pentatomomorpha (Trichophora). The Trichophora could be divided into two clades : one clade consisted of the monophyletic superfamilies Pentatomoidea and Pyrrhocoroidea; the other was mainly the polyphyletic superfamilies Lygaeoidea, Coreoidea and Idiostoloidea. The superfamilies Lygaeoidea and Coreoidea were both polyphyletic. Within Lygaeoidea, Piesmatidae was sister to Berytidae. They formed a clade locating at the basal of the Trichophora and distantly related to the other two families Lygaeidae and Rhyparochromidae. This research suggested that 18S rDNA was a proper marker to reconstruct the phylogeny of Pentatomomorpha that was accordant to morphological studies and the research of Li et al (2005). The Pyrrhocoroidea was further divided from the Coreoidea (s./at ). It was suggested that the Piesmatidae might be assigned as a superfamily of Pentatomomorpha rather than a family in Lygaeoidea. 展开更多
关键词 Molecular phylogeny Pentatomomorpha 18 S rDNA Trichophora
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’94:太阳对着邮市微笑
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作者 肖捷 《经济工作导刊》 1994年第5期53-55,共3页
春天的到来,人们的脸色活泛了,眼光的注目点多了起来。细心的人发现,一向冷落的邮票市场又渐渐活跃起来。深得其道的玩邮行家里手,借着暖人的春意,活动着几乎被两年邮市寒流冻僵的身躯,一边唏嘘着昨日的冷落,一边窃喜着今朝的复苏,开始... 春天的到来,人们的脸色活泛了,眼光的注目点多了起来。细心的人发现,一向冷落的邮票市场又渐渐活跃起来。深得其道的玩邮行家里手,借着暖人的春意,活动着几乎被两年邮市寒流冻僵的身躯,一边唏嘘着昨日的冷落,一边窃喜着今朝的复苏,开始不动声色地跃跃欲试了。 展开更多
关键词 邮市 邮票价格 邮票市场 太阳 集邮者 目点 寒流 邮电部 小型张 明文公告
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Path planning for light-induced dielectrophoretic manipulation of micro-particles
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作者 常严 朱晓璐 倪中华 《Journal of Southeast University(English Edition)》 EI CAS 2011年第4期388-393,共6页
To realize automatic manipulation of micro-particles by light-induced dielectrophoresis (LDEP), a path-planning scheme based on the improved artificial potential field (APF) for micro light pattern movements is pr... To realize automatic manipulation of micro-particles by light-induced dielectrophoresis (LDEP), a path-planning scheme based on the improved artificial potential field (APF) for micro light pattern movements is proposed. An algorithm combining guided target and point obstacle based on a new local minimum judging criterion is specially designed, which can solve the local minimum problems encountered by the traditional APF. Experiments of real-time particle manipulation based on this algorithm are implemented and the experimental results show that the proposed approach can overcome the local minimum problems of the traditional APF method, and it is validated to be highly stable for intensive particle obstacles during LDEP manipulation. Consequently, this method can realize real-time manipulation of micro-nano particles with safety, decrease the difficulty of manual manipulation, and thus improve the efficiency of manipulation of micro-particles. 展开更多
关键词 light-induced dielectrophoresis artificial potential field guided target point obstacle
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Physical-layer security enhancement method for wireless HetNets via transmission pair scheduling 被引量:1
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作者 Ding Xiaojin Song Tiecheng Zhang Gengxin 《Journal of Southeast University(English Edition)》 EI CAS 2019年第3期318-324,共7页
In order to enhance the physical-layer security of wireless transmission in a wireless heterogeneous network (HetNet), a two-stage-based cooperative framework is advocated. To be specific, a source-destination (SD) pa... In order to enhance the physical-layer security of wireless transmission in a wireless heterogeneous network (HetNet), a two-stage-based cooperative framework is advocated. To be specific, a source-destination (SD) pair is opportunistically chosen at the beginning of the transmission slot, which can be used to assist the transmissions of other SD pairs. Under this framework, a transmit antenna selection assisted opportunistic SD pair scheduling (TAS-OSDS) scheme is proposed, and the intercept probability (IP) of the proposed TAS-OSDS, the conventional round-robin source-destination pair scheduling (RSDS) and the conventional non-cooperation (non-coop) schemes is also analyzed, where the RSDS and non-coop schemes are used for comparison with the proposed TAS-OSDS. Numerical results show that increasing the number of the SD pairs can effectively reduce the IP of the TAS-OSDS scheme, whereas the IP of the RSDS and the non-coop remain unchanged with an increasing number of the SD pairs. Furthermore, the TAS-OSDS scheme achieves a lower IP than that of the RSDS and the non-coop schemes, showing the superiority of the proposed TAS-OSDS. 展开更多
关键词 wireless heterogeneous network physical-layer security source-destination pair scheduling
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Space luminous environment adaptability of missile-borne star sensor 被引量:1
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作者 赵述芳 王洪涛 +1 位作者 王渝 纪彩彦 《Journal of Central South University》 SCIE EI CAS 2012年第12期3435-3443,共9页
To solve the problem of stray interference to star point target identification while a star sensor imaging to the sky, a study on space luminous environment adaptability of missile-borne star sensor was carried out. B... To solve the problem of stray interference to star point target identification while a star sensor imaging to the sky, a study on space luminous environment adaptability of missile-borne star sensor was carried out. By Plank blackbody radiation law and some astronomic knowledge, irradiancies of the stray at the star sensor working height were estimated. By relative astrophysical and mathematics knowledge, included angles between the star sensor optical axis point and the stray at any moment were calculated. The calculation correctness was verified with the star map software of Stellarium. By combining the upper analysis with the baffle suppression effect, a real-time model for space luminous environment of missile-borne star sensor was proposed. By signal-noise rate (SNR) criterion, the adaptability of missile-borne star sensor to space luminous environment was studied. As an example, a certain type of star sensor was considered when imaging to the starry sky on June 22, 2011 (the Summer Solstice) and September 20, 2011 (August 23 of the lunar year, last quarter moon) in Beijing. The space luminous environment and the adaptability to it were simulated and analyzed at the star sensor working height. In each period of time, the stray suppression of the baffle is analyzed by comparing the calculated included angle between the star sensor optical axis point and the stray with the shielded provided by system index. When the included angle is larger than the shielded angle and less than 90~, the stray is restrained by the baffle. The stray effect on star point target identification is analyzed by comparing the irradiancy of 6 magnitude star with that of the stray on star sensor sensitization surface. When the irradiancy of 6 magnitude star is 5 times more than that of the stray, there is no effect on the star point target identification. The simulation results are identicat with the actual situation. The space luminous environment of the missile-borne star sensor can be estimated real-timely by this model. The adaptability of the star sensor to space luminous environment can be analyzed conveniently. A basis for determining the relative star sensor indexes, the navigation star chosen strategy and the missile launch window can be provided. 展开更多
关键词 missile-borne star sensor space luminous environment stray irradiancy BAFFLE real-time model
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Train driver protection under secondary impact 被引量:2
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作者 WANG Wen-bin ZHOU He-chao ZHAN Jun 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第4期905-915,共11页
An EMU train with detailed cabin structural is established based on the finite element method.The secondary impact between train driver and control desk is fully analysed and two measures are proposed to reduce the dr... An EMU train with detailed cabin structural is established based on the finite element method.The secondary impact between train driver and control desk is fully analysed and two measures are proposed to reduce the driver injury severity,such as the multi-objective optimization of the driver seat position and equipping the train with three-point seat belt.Simulation results indicate that the driver seat position has a significant effect on the driver injury severity during a secondary impact.According to the multi-objective optimization,some Pareto solutions are suggested to design the driver seat position.Besides that,it is also indicated although the chest and leg are well protected when the driver wears a two-point seat belt,it increases the head injure during a secondary impact.On the other hand,the three-point seat belt can supply the train driver with an overall protection against the secondary impact.The injury criteria(HIC,VC,TI)of the driver with the three-point seat belt is significantly lower than those of the driver without seat belt.Moreover,according to the simulation analysis,the limited load of the three-point seat belt is suggested about 1.5 kN. 展开更多
关键词 train collision secondary impact driver protection multi-objective optimization three-point seat belt
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The combined FSS-SPRT method for detection and tracking of low SNR point targets
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作者 张海英 张田文 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第2期174-179,共6页
For the detection and tracking of dim point targets with SNR 〈 2 dB, the combined SPRT and FSS method is given to accomplish detection in whicb likelihood testing are carried out twice to prune constantly. Firstly, t... For the detection and tracking of dim point targets with SNR 〈 2 dB, the combined SPRT and FSS method is given to accomplish detection in whicb likelihood testing are carried out twice to prune constantly. Firstly, the SPRT is developed aiming at the heuristic segments formed by correlation analysis. In order to avoid missing detection the threshold is chosen much lower. Secondly, by adding samples and choosing the one most similar to the heuristic segment to make state estimation FSS is implemented. This time we choose a higher threshold. Moreover in preprocessing the compound kernel estimation is designed to depress varying background clutter. Multiple experimental sequences validate that the method is more suitable for the dim targets detection and tracking compared with the scheme choosing the higher intensity pixel in tracking. It not only has perfect detection performance but also can greatly enhance tracking performance. 展开更多
关键词 kernel estimation SPRT point target heuristic segment directional correlation filters
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Linguistic features and translation of English advertisements
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作者 白兰 《Sino-US English Teaching》 2010年第5期56-60,共5页
English advertisements have lexical, syntactical and rhetorical features. Knowing them is conducive to the translation of English advertisements. Translators should use Skopostheorie to instruct their practices and ad... English advertisements have lexical, syntactical and rhetorical features. Knowing them is conducive to the translation of English advertisements. Translators should use Skopostheorie to instruct their practices and adopt various translation techniques to let target consumers know the information of the product after reading the translation and arouse their purchasing desires and impulses to fulfill the function of advertisements. 展开更多
关键词 ADVERTISEMENT linguistic features Skopostheorie TRANSLATION
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Information fusion based on addition of unascertained rational numbers for recognization of spatial point targets
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作者 张池平 宋向勃 崔祜涛 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2003年第3期332-334,共3页
A new uncertain information model, i.e. unascertainment, which is different from randomness,fuzziness and grayness, has been introduced into information fusion to give a reasoning method,which is basedon addition of u... A new uncertain information model, i.e. unascertainment, which is different from randomness,fuzziness and grayness, has been introduced into information fusion to give a reasoning method,which is basedon addition of unascertained rational number and can be used to recognize spatial point targets. The validity ofthe method proposed is verified through an example. 展开更多
关键词 unascertained information information fusion
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Design and simulation for large parafoil fix line object homing algorithm 被引量:3
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作者 LI Chun 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第9期2276-2283,共8页
Traditional parafoil homing usually uses a point as object. As the mobility of parafoil is limited by its glide ratio and wind, in some cases when the parafoil scatter area is large, or the glide ratio of parafoil is ... Traditional parafoil homing usually uses a point as object. As the mobility of parafoil is limited by its glide ratio and wind, in some cases when the parafoil scatter area is large, or the glide ratio of parafoil is small, the deviation of its landing point to object point will be arduous to control. Accordingly, during these situations, when parafoil is used in recovery of spacecraft or satellite, the landing area of parafoil can be set as a rectangle, and the object of parafoil can be set as a line segment. The thesis of this work is designing an algorithm for parafoil homing using line segment as object. The algorithm of wind velocity and direction calculation in different flying segments was also investigated. The algorithm designed navigates the parafoil to land into the predestined area and largely reduce the probability of recovery loads falling to unwanted area to damage houses and people. 展开更多
关键词 fix line HOMING PARAFOIL ALGORITHM design simulation
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A compound objective reconfiguration of distribution networks using hierarchical encoded particle swarm optimization 被引量:3
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作者 WEN Juan TAN Yang-hong +1 位作者 JIANG Lin XU Zu-hua 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第3期600-615,共16页
With the development of automation in smart grids,network reconfiguration is becoming a feasible approach for improving the operation of distribution systems.A novel reconfiguration strategy was presented to get the o... With the development of automation in smart grids,network reconfiguration is becoming a feasible approach for improving the operation of distribution systems.A novel reconfiguration strategy was presented to get the optimal configuration of improving economy of the system,and then identifying the important nodes.In this strategy,the objectives increase the node importance degree and decrease the active power loss subjected to operational constraints.A compound objective function with weight coefficients is formulated to balance the conflict of the objectives.Then a novel quantum particle swarm optimization based on loop switches hierarchical encoded was employed to address the compound objective reconfiguration problem.Its main contribution is the presentation of the hierarchical encoded scheme which is used to generate the population swarm particles of representing only radial connected solutions.Because the candidate solutions are feasible,the search efficiency would improve dramatically during the optimization process without tedious topology verification.To validate the proposed strategy,simulations are carried out on the test systems.The results are compared with other techniques in order to evaluate the performance of the proposed method. 展开更多
关键词 distribution network reconfiguration node importance degree compound objective function hierarchical encoded
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Integration Possibility of Urban Public Bus System and Cable Car in Maribor 被引量:1
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作者 Sebastian Toplak 《Journal of Civil Engineering and Architecture》 2014年第3期332-338,共7页
Combination of a bus system and cable car system can reduce the overall congestion of traffic in urban areas, where surrounding hills or mountains hold larger settlements or tourist and recreational infrastructure. Wi... Combination of a bus system and cable car system can reduce the overall congestion of traffic in urban areas, where surrounding hills or mountains hold larger settlements or tourist and recreational infrastructure. With this kind of integration number of individual car trips can be significantly reduced. In this paper, the authors present an analysis of the pilot project implementation, which was held in Maribor. The authors conducted a limited test trial of two means of transportation, combining them into a single operating transport offer for inhabitants and tourists. Combined transport option proved to be a good starting point for reduction of traffic and parking congestion during winter tourist season and beyond. Method used in the research, in order to gain actual potential of integrating two systems and improving public transport offer, was establishment and implementation of the pilot project in Maribor during January 2011. Data was gathered through interviews of two interest groups. The first covered the users who were brought to the foothills of Pohorje's ski center by bus. The second covered the cable car users that were traveling to the top of Pohorje. For a limited time period, a trial principle of a single ticket was established, which gave ski-pass holders free bus ride on bus line No. 6. With the aim of reducing CO2, test drives of hybrid bus and compressed natural gas bus were conducted alongside many promotional activities with which users were informed of importance of environmentally friendly mobility options. 展开更多
关键词 Public transport bus system cable car INTEGRATION combined ticket single ticket compressed natural gas CO2reduction.
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SiamADN:Siamese Attentional Dense Network for UAV Object Tracking 被引量:2
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作者 WANG Zhi WANG Ershen +2 位作者 HUANG Yufeng YANG Siqi XU Song 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2021年第4期587-596,共10页
Single object tracking based on deep learning has achieved the advanced performance in many applications of computer vision.However,the existing trackers have certain limitations owing to deformation,occlusion,movemen... Single object tracking based on deep learning has achieved the advanced performance in many applications of computer vision.However,the existing trackers have certain limitations owing to deformation,occlusion,movement and some other conditions.We propose a siamese attentional dense network called SiamADN in an end-to-end offline manner,especially aiming at unmanned aerial vehicle(UAV)tracking.First,it applies a dense network to reduce vanishing-gradient,which strengthens the features transfer.Second,the channel attention mechanism is involved into the Densenet structure,in order to focus on the possible key regions.The advance corner detection network is introduced to improve the following tracking process.Extensive experiments are carried out on four mainly tracking benchmarks as OTB-2015,UAV123,LaSOT and VOT.The accuracy rate on UAV123 is 78.9%,and the running speed is 32 frame per second(FPS),which demonstrates its efficiency in the practical real application. 展开更多
关键词 unmanned aerial vehicle(UAV) object tracking dense network corner detection siamese network
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“石佛”李昌镐
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作者 代瑞 刘文波 《小学教学参考(教育管理)》 2004年第7期73-76,共4页
李昌镐的这种平淡和敦厚时常被人当作是无趣味,甚至连棋风也经常被评价为无棋风,以至于年纪轻轻就被人送了一个“石佛”的雅号,但“石佛”不过是他的表象,其实内在的李昌镐远比他表露在外的形象和气质更为丰富与深遽。
关键词 李昌镐 计算能力 韩国 围棋 人物传记
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Attractive Model and Marketing Implications of Theme Shopping Tourism Destination 被引量:2
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作者 LIU Jiaming WANG Run 《Chinese Geographical Science》 SCIE CSCD 2010年第6期562-567,共6页
This paper discusses the definition and connotation of Theme Shopping Tourism(TST) destination,and reveals the attractive distance of TST destination based on the utility function derived from the supposed demand func... This paper discusses the definition and connotation of Theme Shopping Tourism(TST) destination,and reveals the attractive distance of TST destination based on the utility function derived from the supposed demand function.An attractive model is deduced.According to this attractive model,it is can be known that the attractive distance is related to the price difference of the theme commodities between TST destination and tourist origin place,the average expenditure of transport,the demand elasticity of price,the actual price of sightseeing spot,the critical price that a tourist will afford,the number of nights that a tourist stays on the TST destination and the price level of accommodation in the TST destination.The change mechanism of attractive distance of TST destinations is revealed in this paper,and implications on TST marketing are put forward.First,theme commodities should be luxuries.Second,lower price is the primary pulling factor of theme shopping tourism.Third,the route combining with sightseeing spots is beneficial to shopping tourism.At last,TST development is one way of rejuvenating the falling destinations. 展开更多
关键词 theme shopping tourism destination attractive model utility function tourism marketing
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