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远域子基的定义及其性质 被引量:1
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作者 尤飞 陆志军 《榆林高等专科学校学报》 2000年第1期60-62,共3页
本文给出了LF拓扑空间中远域子基的定义,同时讨论了远域子基的一些性质.
关键词 LF拓扑空间 定义 域基 性质定理
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吸收多个远紫外光子生成的高次谐波的多重截止结构 被引量:1
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作者 俞祖卿 何峰 《物理学报》 SCIE EI CAS CSCD 北大核心 2016年第22期114-119,共6页
本文通过数值求解含时薛定谔方程研究He+在远紫外和红外激光场作用下产生高次谐波的过程.在电子隧穿并从红外激光场获得能量后,其在与母离子碰撞过程中可能吸收额外的远紫外光子,并导致高次谐波中出现以远紫外光子能量为间隔的多重截止... 本文通过数值求解含时薛定谔方程研究He+在远紫外和红外激光场作用下产生高次谐波的过程.在电子隧穿并从红外激光场获得能量后,其在与母离子碰撞过程中可能吸收额外的远紫外光子,并导致高次谐波中出现以远紫外光子能量为间隔的多重截止结构.我们进一步通过傅里叶频谱分析的方法证实了这一结构产生的物理机制;并分析了高次谐波的多重截止频率强度和远紫外强度的关系.我们的研究为产生高能量谐波提供了一种方案. 展开更多
关键词 高次谐波 多重截止 紫外光吸收
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网隔远动子站设备降低故障率方案探讨
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作者 黄清莹 《广西铁道》 2022年第2期43-45,共3页
黎湛线自2017年完成电气化改造以来,网隔远动子站重要设备故障频繁,尤其电源模块故障率居高不下,严重影响黎湛线接触网远动系统稳定运行,一旦发生紧急情况,网开关远动功能失效,将对列车平稳运行造成严重后果。研究分析黎湛线网隔远动子... 黎湛线自2017年完成电气化改造以来,网隔远动子站重要设备故障频繁,尤其电源模块故障率居高不下,严重影响黎湛线接触网远动系统稳定运行,一旦发生紧急情况,网开关远动功能失效,将对列车平稳运行造成严重后果。研究分析黎湛线网隔远动子站设备故障原因,提出整治方案,降低设备故障率,有效保障供电远动应急正常,缩短供电故障影响行车时间,保障列车安全平稳运行。 展开更多
关键词 黎湛线 网隔 电源模块
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一个唐朝女子远嫁吐蕃腹地的传奇——唐蕃古道
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作者 王牧 《中国民族博览》 2004年第2期30-110,31,共35页
1300多年前,一名年轻的唐朝女子在数百名侍从的簇拥下从长安城的南门出发,她将不远千里,翻越崇山峻岭进入吐蕃王国嫁给一个名叫松赞干布的吐蕃赞普。从此,她就再也没有离开过吐蕃大地,再也没有回到过家乡长安。她的名字就是:李雪雁。 ... 1300多年前,一名年轻的唐朝女子在数百名侍从的簇拥下从长安城的南门出发,她将不远千里,翻越崇山峻岭进入吐蕃王国嫁给一个名叫松赞干布的吐蕃赞普。从此,她就再也没有离开过吐蕃大地,再也没有回到过家乡长安。她的名字就是:李雪雁。 当年她进入吐蕃时所走的那条路现在被称为唐蕃古道,这是一条印证历史的汉藏友谊之路也是一条扑朔迷离的传奇之路。 展开更多
关键词 唐蕃古道 赞普 文成公主 雪雁 逻些 汉藏 李道宗 泥婆罗 日月山
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日子远去,晴寂无声
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作者 刘天昭 《快乐阅读》 2016年第1期55-55,共1页
曾经一个人住过很长一段时间,白天与黑夜连成一片,那轻飘混沌的迷幻错乱之感,在记忆里非常深刻。后来,那段日子远去,想得多了就有些美化,便忘记了那里面的滞涩艰难、举轻若重。那时候,一周有五天不必出门,读完四篇论文就好。有时候非常... 曾经一个人住过很长一段时间,白天与黑夜连成一片,那轻飘混沌的迷幻错乱之感,在记忆里非常深刻。后来,那段日子远去,想得多了就有些美化,便忘记了那里面的滞涩艰难、举轻若重。那时候,一周有五天不必出门,读完四篇论文就好。有时候非常振作,收拾整齐出去吃午饭,在咖啡馆坐一下午,可以读完两篇论文,并做好笔记。晚上回家浑身都是轻松的,简直想跟晚霞挥挥手。但多数时候不行,早上醒了几次,翻身又睡过去。实在太饿了。 展开更多
关键词 段日 别人家 三杯鸡 购物车 声点 后撑 木地板 玻璃碗 后台程序
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L-fuzzy保序算子空间的ω-基及其性质 被引量:17
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作者 陈水利 《江汉石油学院学报》 EI CSCD 北大核心 2003年第3期143-145,共3页
在L-fuzzy保序算子空间中引入ω^-基、ω^-子基、ω^-远域基和ω^-远域子基等概念。系统地研究了ω^-基、ω^-子基、ω^-远城基和ω^-远城子基这些概念的性质以及它们之间的关系,同时给出了这些概念在刻画序同态的ω^-连续性以及分子网... 在L-fuzzy保序算子空间中引入ω^-基、ω^-子基、ω^-远域基和ω^-远域子基等概念。系统地研究了ω^-基、ω^-子基、ω^-远城基和ω^-远城子基这些概念的性质以及它们之间的关系,同时给出了这些概念在刻画序同态的ω^-连续性以及分子网和理想的ω^-收敛性的若干应用。 展开更多
关键词 L-FUZZY保序算空间 ω-基 ω- ω-域基 ω- ω-开集 ω-闭集 序同态
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《庄子》识别人才的“九征”法
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作者 魏实 《中国人才》 北大核心 1989年第2期46-46,共1页
[原文]孔子曰,凡人心险于山川,难于知天。天犹有春秋冬夏旦暮之期,人者厚貌深情。故有貌愿而益,有长若不肖,有顺怀而达。有坚而缦,有缓而钎。故其就义若渴者,其去义若热。故君子远使之而观其忠,近使之而观其敬,烦使之而观其能,卒然向焉... [原文]孔子曰,凡人心险于山川,难于知天。天犹有春秋冬夏旦暮之期,人者厚貌深情。故有貌愿而益,有长若不肖,有顺怀而达。有坚而缦,有缓而钎。故其就义若渴者,其去义若热。故君子远使之而观其忠,近使之而观其敬,烦使之而观其能,卒然向焉而观其知,急与之期而观其信,委之以财而观其仁。 展开更多
关键词 九征 知天 先秦时代 识人 以时 哲学著作 列御寇 段文 《吕氏春秋》
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耙子
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作者 张玉虎 《当代农机》 2016年第2期59-59,共1页
在农家屋檐下挂着的众多农具中,耙子远比它的那些伙伴们更"风光"更"出彩"。说起耙子,我们首先想到的是《西游记》里猪八戒的九齿钉耙,其实此耙非彼耙。农民手中的耙子(见图1)可不是"武器",而是农具,它有2种基本的用法,其一为"... 在农家屋檐下挂着的众多农具中,耙子远比它的那些伙伴们更"风光"更"出彩"。说起耙子,我们首先想到的是《西游记》里猪八戒的九齿钉耙,其实此耙非彼耙。农民手中的耙子(见图1)可不是"武器",而是农具,它有2种基本的用法,其一为"搂",其二为"搭"。"搂"是指手握耙柄,将耙齿朝下伸出再往回收的动作,主要在田间作业时使用。春天小面积播种,如集体化时代社员们种"自留地",下种后农民会用耙子把地"搂"平整,让土覆盖种子,以利于其接触土壤,从而发芽生根。 展开更多
关键词 伙伴们 田间作业 农耕时代 实项 堆烧 节俭度日 好把式 土木结构 芽生
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饮食君子
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作者 李敬泽 《烹调知识》 2015年第7期7-7,共1页
孟子曰:君子远庖厨。这话让人不舒服,好像君子就该坐在厅堂上等着吃。不过让人不舒服的话总是有道理,这句话的道理是,厨房和厅堂是生活中两个不同的区域,厅堂清洁静雅,而厨房里烟熏火燎,杀气腾腾;厅堂是体面,而厨房应该遮蔽起来,应该... 孟子曰:君子远庖厨。这话让人不舒服,好像君子就该坐在厅堂上等着吃。不过让人不舒服的话总是有道理,这句话的道理是,厨房和厅堂是生活中两个不同的区域,厅堂清洁静雅,而厨房里烟熏火燎,杀气腾腾;厅堂是体面,而厨房应该遮蔽起来,应该看不见。当然,这很矫情。但我们称之为"文明"或"文化"的事情多少都有点矫情,在"吃"这件事上,人要一点不矫情的话就会比任何吃来吃去的动物可怕。——这通议论是由《随园食单》而起。 展开更多
关键词 随园食单 静雅 如梦 肴核 鱼脍 三联书店 亲力亲为 真味 尺度感
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“民胞物与” 万物一体 被引量:1
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作者 余立国 《学习月刊》 2015年第21期51-52,共2页
民胞物与是北宋大儒张载提出的著名理念,原话是"民吾同胞,物吾与也",意思是人类都是我的同胞,万物皆为我的朋友。它是对儒家仁爱思想的精辟论述。仁爱思想的基本内涵是"亲亲而仁民,仁民而爱物"(《孟子.尽心上》),就是爱要从亲爱... 民胞物与是北宋大儒张载提出的著名理念,原话是"民吾同胞,物吾与也",意思是人类都是我的同胞,万物皆为我的朋友。它是对儒家仁爱思想的精辟论述。仁爱思想的基本内涵是"亲亲而仁民,仁民而爱物"(《孟子.尽心上》),就是爱要从亲爱自己的家人出发,然后推向仁爱天下之人,最后推向爱天地万物,达到与天地万物为一体。 展开更多
关键词 民胞物与 万物一体 仁民 仁爱思想 天地万物 尽心上 天下之人 天地之间 梁惠王
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High-Dimensional Multi-particle Cat-Like State Teleportation 被引量:15
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作者 ZENGBei LONGGui-Lu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2002年第5期537-540,共4页
Two kinds of -particle d-dimensional Schmidt-form entangled state teleportation protocols are presented. In the first protocol, the teleportation is achieved by -dimensional Bell-basis measurements, while in the secon... Two kinds of -particle d-dimensional Schmidt-form entangled state teleportation protocols are presented. In the first protocol, the teleportation is achieved by -dimensional Bell-basis measurements, while in the second protocol it is realized by -dimensional GHZ-basis measurement. 展开更多
关键词 TELEPORTATION Bell measurement GHZ measurement
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Probabilistic Teleportation of Two—Particle State of General Formation 被引量:11
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作者 YANFeng-Li TANHong-Ge 《Communications in Theoretical Physics》 SCIE CAS CSCD 2002年第6期649-654,共6页
A scheme for probabilistic teleporting an unknown two-particle state of general formation by partly pure entangled four-particle state is proposed. It is shown that after performing two Bell state measurements, proper... A scheme for probabilistic teleporting an unknown two-particle state of general formation by partly pure entangled four-particle state is proposed. It is shown that after performing two Bell state measurements, proper unitary transformation and the measurement on an auxiliary qubit, the unknown two-particle state of general formation, which was destroyed at one place, can be reconstructed at another place with certain probability. 展开更多
关键词 probabilistic teleportation Bell state measurement two-particle state of general formation
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Simulation and verifi cation of an air-gun array wavelet in time-frequency domain based on van der waals gas equation 被引量:3
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作者 Zhang Dong Liu Huai-shan +6 位作者 Xing Lei Li Qian-qian Liu Xue-qin Wei Jia Wang Jian-hua Zhou Heng Ge Xin-min 《Applied Geophysics》 SCIE CSCD 2020年第5期736-746,901,902,共13页
An air gun generates acoustic signals for seismic exploration by releasing a high-pressure gas.A large error is always gradually introduced into the ideal-gas model when the pressure in the air-gun chamber exceeds 100... An air gun generates acoustic signals for seismic exploration by releasing a high-pressure gas.A large error is always gradually introduced into the ideal-gas model when the pressure in the air-gun chamber exceeds 100 atm.In the van der Waals non-ideal-gas theory,the gas in the air gun can be regarded as an actual gas,and the error is less than 2%.The van der Waals model is established in combination with the quasi-static open thermodynamic system and bubble-motion equation by considering the bubble rise,bubble interaction,and throttling eff ect.The mismatch between the van der Waals and ideal-gas models is related to the pressure.Theoretically,under high-pressure conditions,the van der Waals air-gun model yields results that are closer to the measured results.Marine vertical cables are extended to the seafl oor using steel cables that connect the cement blocks,but the corresponding hydrophones are suspended in the seawater.Thus,noise associated with ships,ocean surges,and coupling problems is avoided,and the signal-to-noise ratio and resolution of marine seismic data are improved.This acquisition method satisfies the conditions of recording air-gun far-fi eld wavelets.According to an actual vertical-cable observation system,the van der Waals air-gun model is used to model the wavelet of different azimuth and take-off angles.The characteristics of the experimental and simulated data demonstrate good agreement,which indicates that the van der Waals method is accurate and reliable.The accuracy of the model is directly related to the resolution,thus aff ecting the resolution ability of the stratum. 展开更多
关键词 Air-gun far-fi eld wavelet van der Waals equation Marine vertical cables Timefrequency domain
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Controlled Teleportation Using Four-Particle Cluster State 被引量:12
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作者 LI Song-Song NIE Yi-You HONG Zhi-Hui YI Xiao-Jie HUANG Yi-Bin 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第9期633-636,共4页
A controlled teleportation scheme is presented.In this scheme,quantum information of a single-qubit stateor an entangled two-qubits state is transmitted from a sender (Alice) to a receiver (Charlie) via a four-particl... A controlled teleportation scheme is presented.In this scheme,quantum information of a single-qubit stateor an entangled two-qubits state is transmitted from a sender (Alice) to a receiver (Charlie) via a four-particle clusterstate under the control of the supervisor (Bob).The feature of this scheme is that the teleportation between the senderand the receiver depends on the control of the supervisor. 展开更多
关键词 controlled teleportation cluster state
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Remote Three-Party Quantum State Sharing Based on Three-Atom Entangled States Assisted by Cavity QED and Flying Qubits 被引量:2
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作者 王铁军 邓富国 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第5期795-803,共9页
We present a remote three-party quantum state sharing (QSTS) scheme with three-atom Greenberger- Horne-Zeilinger (GHZ) states assisted by cavity QED and flying qubits. It exploits some photons to act as the flying... We present a remote three-party quantum state sharing (QSTS) scheme with three-atom Greenberger- Horne-Zeilinger (GHZ) states assisted by cavity QED and flying qubits. It exploits some photons to act as the flying qubits for setting up the quantum channel securely with three-atom systems in a GHZ state, which maybe make this remote QSTS scheme more practical than some other schemes based on atom systems only or ion-trap systems as photons interact with their environments weakly. The coherence of the stationary atom qubits in cavities provides the convenience for the parties in QSTS to check eavesdropping, different from entangled photon systems. Moreover, the present scheme works in a collective-noise condition and it may be more practical than others in applications in future. 展开更多
关键词 quantum state sharing three-atom GHZ state flying qubits collective noise
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Multiparty-Controlled Remote Preparation of Two-Particle State 被引量:2
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作者 HOU Kui WANG Jing +1 位作者 YUAN Hao SHI Shou-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第11期848-852,共5页
We propose a scheme for multiparty-controlled remote preparation of the two-particle state by using two non-maximally Greenberger-Horne-Zeilinger states as quantum channel. Our scheme consists of one sender and n remo... We propose a scheme for multiparty-controlled remote preparation of the two-particle state by using two non-maximally Greenberger-Horne-Zeilinger states as quantum channel. Our scheme consists of one sender and n remote receivers. It will be shown that the sender can help either one of the n receivers to remotely preparation the original state with the appropriate probability, and the sender Alice's two-particle projective measurement and the controllers' single-particle product meazurements are needed. We also obtained the probability of the successful remote state preparation. 展开更多
关键词 remote state preparation two-particle state MULTIPARTY
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河北元氏新出数方唐赵郡李氏家族墓志概观 被引量:2
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作者 冻国栋 《魏晋南北朝隋唐史资料》 CSSCI 2010年第1期146-156,共11页
2009年夏秋间,武汉大学考古专业为配合'南水北调'中线工程文物保护之需要,由余西云教授率队于河北省元氏县苏阳乡南白楼村西南古墓葬区勘察并发掘各类墓葬三十八座,其中于西区发现大型唐代土洞墓六座,获见墓志三方。
关键词 墓志铭 檀山 支系 赵郡李氏 骑兵参军事 骑兵参军 元氏 久视元年 州长史 延世 家族 家系 概观 河北
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Scheme for Teleportation of an Unknown Frequency State by Using an Acousto-optical Modulator 被引量:1
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作者 XIANG Shao-hua, YANG Xiong, SONG Ke-hui(Dept.of Phys.,Huaihua College, Huaihua 418008, CHN) 《Semiconductor Photonics and Technology》 CAS 2003年第2期116-118,共3页
A very simple scheme is presented for teleporting an unknown frequency state with the successful probability of 50%. Two acoustic-optical modulators and four narrow band photodetectors in the proposed scheme are used.... A very simple scheme is presented for teleporting an unknown frequency state with the successful probability of 50%. Two acoustic-optical modulators and four narrow band photodetectors in the proposed scheme are used. One advantage of our scheme is that no Bell-state measurement is need and no any unitary transformation is performed. 展开更多
关键词 quantum teleportation frequency entanglement acousto optical modulator
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An Efficient and Economic Scheme for Remotely Preparing a Multi-Qudit State via a Single Entangled Qudit Pair 被引量:1
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作者 詹佑邦 张群永 +2 位作者 施锦 马鹏程 胡宝林 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第9期463-468,共6页
We propose some schemes for remote preparation of arbitrary high-dimensional equatorial entangled state via a single bipartite high-dimensional entangled state as quantum channel. We firstly present the remote prepara... We propose some schemes for remote preparation of arbitrary high-dimensional equatorial entangled state via a single bipartite high-dimensional entangled state as quantum channel. We firstly present the remote preparation of bipartite three- and d-dimensional equatorial entangled state by using a single entangled qutrit and qudit pair, respectively, and then directly generalize the schemes to multipartite case. The cases of the quantum channel being non-maximally two-qutrit and two-qudit entangled state are also considered, respectively. In these schemes the required resources are single-particle projective measurement dimensional C-NOT operation. It is shown that the greatly reduced in our schemes. appropriate local unitary operation, auxiliary particle, and highentanglement resource and classical communication cost are both 展开更多
关键词 remote state preparation high-dimensional equatorial entangled state high-dimensional C-NOTgate
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Scheme for Implementing Perfect Quantum Teleportation with Non-maximally Entangled W-Class State in Cavity QED
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作者 PENG Zhao-Hui JIA Chun-Xia LI Jun-Gang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第8期375-378,共4页
We propose an experimentally feasible teleportation scheme with three-atom W-class state,which was first proposed by Agrawal and Pati [P.Agrawal and A.Pati,Phys.Rev.A 74 (2006) 062320 ],in cavity QED.In this scheme at... We propose an experimentally feasible teleportation scheme with three-atom W-class state,which was first proposed by Agrawal and Pati [P.Agrawal and A.Pati,Phys.Rev.A 74 (2006) 062320 ],in cavity QED.In this scheme atoms interact simultaneously with a nonresonant cavity and there is no energy exchange between the atoms and the cavity.Thus it is insensitive to the cavity decay,which is of importance in view of experiment. 展开更多
关键词 TELEPORTATION W-class state cavity QED
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