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Extention of Time Limit Mandated by SIPO(as basically limited to one extention and for two months at most)
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《中国专利与商标》 1999年第4期17-17,共1页
The State Intellectual Poperty Office has announcedan amendment to Sec.5,Paragrph 4.2.of Chapter 7 ofExamination Guidelines.According to the newregulations,for making a respon to an office actionduring the prosecution... The State Intellectual Poperty Office has announcedan amendment to Sec.5,Paragrph 4.2.of Chapter 7 ofExamination Guidelines.According to the newregulations,for making a respon to an office actionduring the prosecution of a patent application,only a firstrequest for a two-month extension of time can be basicallyallowed upon payment of official fee of RMB300(aboutUSD36).For further extension after the first one,onlyanother request for one or two months,at most twomonths,would be possibly petitioned together with a copyof the client’s instructions of the further extension and 展开更多
关键词 as basically limited to one extention and for two months at most Extention of time Limit Mandated by SIPO
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RELAXATION TIME LIMITS PROBLEM FOR HYDRODYNAMIC MODELS IN SEMICONDUCTOR SCIENCE 被引量:3
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作者 黎勇 《Acta Mathematica Scientia》 SCIE CSCD 2007年第2期437-448,共12页
In this article, two relaxation time limits, namely, the momentum relaxation time limit and the energy relaxation time limit are considered. By the compactness argument, it is obtained that the smooth solutions of the... In this article, two relaxation time limits, namely, the momentum relaxation time limit and the energy relaxation time limit are considered. By the compactness argument, it is obtained that the smooth solutions of the multidimensional nonisentropic Euler-Poisson problem converge to the solutions of an energy transport model or a drift diffusion model, respectively, with respect to different time scales. 展开更多
关键词 Hydrodynamic models nonisentropic Euler-Poisson momentum relaxation time limit energy relaxation time limit
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Quantum speed limit time and entanglement in a non-Markovian evolution of spin qubits of coupled quantum dots 被引量:1
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作者 M.Bagheri Harouni 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第12期244-250,共7页
Quantum speed limit time and entanglement in a system composed of coupled quantum dots are investigated.The excess electron spin in each quantum dot constitutes the physical system(qubit).Also the spin interaction is ... Quantum speed limit time and entanglement in a system composed of coupled quantum dots are investigated.The excess electron spin in each quantum dot constitutes the physical system(qubit).Also the spin interaction is modeled through the Heisenberg model and the spins are imposed by an external magnetic field.Taking into account the spin relaxation as a non-Markovian process,the quantum speed limit and entanglement evolution are discussed.Our findings reveal that increasing the magnetic field leads to the faster quantum evolution.In addition,the temperature increment causes the longer quantum speed limit time as well as the entanglement degradation. 展开更多
关键词 quantum speed limit time quantum entanglement open quantum systems quantum dots
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Quantum speed limit time of a two-level atom under different quantum feedback control
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作者 余敏 方卯发 邹红梅 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第1期253-257,共5页
We investigate the quantum speed limit time (QSLT) of a two-level atom under quantum-jump-based feedback control or homodyne-based feedback control. Our results show that the two different feedback control schemes h... We investigate the quantum speed limit time (QSLT) of a two-level atom under quantum-jump-based feedback control or homodyne-based feedback control. Our results show that the two different feedback control schemes have different influences on the evolutionary speed. By adjusting the feedback parameters, the quantum-jump-based feedback control can induce speedup of the atomic evolution from an excited state, but the homodyne-based feedback control cannot change the evolutionary speed. Additionally, the QSLT for the whole dynamical process is explored. Under the quantum-jump-based feedback control, the QSLT displays oscillatory behaviors, which implies multiple speed-up and speed-down processes during the evolution. While, the homodyne-based feedback control can accelerate the speed-up process and improve the uniform speed in the uniform evolution process. 展开更多
关键词 quantum speed limit time quantum feedback control SPEEDUP
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Crack growth time dependence analysis of granite under compressive-shear stresses state
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作者 李江腾 曹平 +1 位作者 古德生 吴超 《Journal of Coal Science & Engineering(China)》 2008年第1期34-37,共4页
The curves of crack relative length lib and crack growth time t of granite were gained under compressive stresses state according to subcritical crack growth parameters and crack stability growth equation by double-to... The curves of crack relative length lib and crack growth time t of granite were gained under compressive stresses state according to subcritical crack growth parameters and crack stability growth equation by double-torsion constant displacement load relaxa- tion method. The relations between crack relative length and the crack growth time were discussed under different stresses and different crack lengths. The results show that there is a turning point on curve of crack relative length lib and crack growth time of granite. The slope of curve is small when crack relative length is less than the vertical coordinate of the point, and crack grows stably in this case. Cracks grow, encounter and integrate catastro- phically when crack relative length is more than the vertical coordinate of the point, and there is not a gradual stage from crack stability growth to crack instability growth, i.e. rock mass instability is sudden. The curves of crack relative length lib and crack growth time t of granite move to right with decrease of stress σl or crack length a, which implies that limit time increases consequently. The results correspond to practicality. 展开更多
关键词 GRANITE compressive-shear stresses state crack stability growth time de-pendence limit time
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Distributed In-Time Multiple Coverage Holes Healing Protocol
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作者 Lin-Na Wei Zhi-Guang Qin 《Journal of Electronic Science and Technology》 CAS 2012年第2期185-191,共7页
Coverage holes often appear in wireless sensor networks due to sensor failure or the inheritance of sensor's random distribution. In the hybrid model, mobile sensors in the network are acquired to heal coverage holes... Coverage holes often appear in wireless sensor networks due to sensor failure or the inheritance of sensor's random distribution. In the hybrid model, mobile sensors in the network are acquired to heal coverage holes by their mobifity. When multiple coverage holes appear in the sensor network and each of them has a time requirement (in which the coverage hole has to be healed), conflicts for the requests of the same mobile sensor may arise. A distributed multiple mobile sensor schedufing protocol (DMS) is proposed in this paper to solve this problem by finding mobile sensors in the time response zone defined by the time requirement of each coverage hole. Simulation results show that DMS can well schedule the mobile sensors to move to multiple coverage holes within the time requirement. 展开更多
关键词 Coverage bole distributed protocol mobile sensor dispatch sensor network time limited.
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Determination of the Financing Scale,Time Limit and Returns from the Investment in BOT Projects
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作者 Chen Shouke Wei Zhuobin 《Engineering Sciences》 EI 2008年第1期83-89,共7页
The key aspect to the successful implementation of BOT concept is the raising of finance by project sponsor,so financial engineering techniques and capital structuring skills are required to find the proper mix of deb... The key aspect to the successful implementation of BOT concept is the raising of finance by project sponsor,so financial engineering techniques and capital structuring skills are required to find the proper mix of debt and equity.The capital structure and present a model to determine the equity level from the aspects of financing scale,construction time and return on investment are analyzed.The resulting model can help the sponsor to avoid the capital risk,and offer the government a criterion to evaluate management ability of the sponsor.To show the application and availability of this model,a case study is conducted.Thus,this paper is concern with the determination of financing scale,construction time,and return on investment which would assist the sponsor to ensure that the equity level for optimal capital structure is available prior to the implementation stage in BOT project operation. 展开更多
关键词 capital risk financing scale time limit returns of investment BOT project
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Whether is the Time Limit of Litigation/Arbitration Suspended if one of the Parties Only Submits the Application for Arbitration to the Arbitration Commission?
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《China's Foreign Trade》 2001年第8期44-44,共1页
关键词 Whether is the time Limit of Litigation/Arbitration Suspended if one of the Parties Only Submits the Application for Arbitration to the Arbitration Commission
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A Study on Female Self Consciousness Across Time and Space in The Hours
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作者 顾真 《疯狂英语(理论版)》 2016年第3期242-244,共3页
The film The Hours is a masterpiece that reflects female spiritual predicament and it analyzes the life exploration and death struggle of three women in three periods deeply.This research chooses this film as material... The film The Hours is a masterpiece that reflects female spiritual predicament and it analyzes the life exploration and death struggle of three women in three periods deeply.This research chooses this film as material to study female self consciousness.In this paper,female self consciousness is discussed in two aspects,namely,from limitation and span of time and space aspect,and from the certain image in this film.At the end of this paper,there is a clear conclusion,namely a suggestion for female who is suffering from how to do self consciousness. 展开更多
关键词 limitation and span of time and space:female self consciousness:self anxiety
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Event-triggered adaptive finite time trajectory tracking control for an under actuated vessel considering unknown time-varying disturbances 被引量:1
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作者 Qiwen Wang Qiang Zhang +2 位作者 Yugang Wang Yancai Hu Shaoyi Guo 《Transportation Safety and Environment》 EI 2023年第4期155-163,共9页
This paper aims to solve the finite-time trajectory tracking problem of underactuated surface ships under the influence of dynamic uncertainty,unknown external time-varying interference and limited communication resou... This paper aims to solve the finite-time trajectory tracking problem of underactuated surface ships under the influence of dynamic uncertainty,unknown external time-varying interference and limited communication resources.An event-triggered robust adaptive finite-time trajectory tracking control method for underactuated ships is designed by combining the existing trajectory tracking control methods and engineering needs in actual navigation.It can obviously improve the tracking accuracy of the ship,and complete the tracking task safely and efficiently.This scheme transforms the composite uncertain vector synthesized by uncertain parameters and external disturbances into a linear parameterized form.Next,considering the limitation of communication resources,a relative threshold event triggering mechanism is introduced to further extend the triggering time interval on the basis of the fixed threshold triggering scheme.Then,an event-triggered robust adaptive finite-time trajectory tracking control scheme is designed for underactuated ships,and a rigorous stability proof is provided through Lyapunov stability theory.Simulation experiment is carried out in MATLAB and the results show that the finite-time trajectory tracking control scheme proposed in this paper can effectively solve the problems of dynamic uncertainty.unknown time-varying external interference and limitation of communication resources.This paper can provide theoretical support for the autonomous navigation of intelligent ships. 展开更多
关键词 surface vessel limited time event triggering trajectory tracking
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Influences of spin-orbit interaction on quantum speed limit and entanglement of spin qubits in coupled quantum dots
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作者 M Bagheri Harouni 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第9期94-100,共7页
Quantum speed limit and entanglement of a two-spin Heisenberg XYZ system in an inhomogeneous external magnetic field are investigated.The physical system studied is the excess electron spin in two adjacent quantum dot... Quantum speed limit and entanglement of a two-spin Heisenberg XYZ system in an inhomogeneous external magnetic field are investigated.The physical system studied is the excess electron spin in two adjacent quantum dots.The influences of magnetic field inhomogeneity as well as spin-orbit coupling are studied.Moreover,the spin interaction with surrounding magnetic environment is investigated as a non-Markovian process.The spin-orbit interaction provides two important features:the formation of entanglement when two qubits are initially in a separated state and the degradation and rebirth of the entanglement. 展开更多
关键词 quantum speed limit time quantum entanglement open quantum systems spin-orbit effects
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Quantum speed limits for Bell-diagonal states
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作者 韩伟 江克侠 +1 位作者 张英杰 夏云杰 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第12期222-227,共6页
The lower bounds of the evolution time between two distinguishable states of a system, defined as quantum speed limit time, can characterize the maximal speed of quantum computers and communication channels. We study ... The lower bounds of the evolution time between two distinguishable states of a system, defined as quantum speed limit time, can characterize the maximal speed of quantum computers and communication channels. We study the quantum speed limit time between the composite quantum states and their target states in the presence of nondissipative decoherence.For the initial states with maximally mixed marginals, we obtain the exact expressions of the quantum speed limit time which mainly depend on the parameters of the initial states and the decoherence channels. Furthermore, by calculating the quantum speed limit time for the time-dependent states started from a class of initial states, we discover that the quantum speed limit time gradually decreases in time, and the decay rate of the quantum speed limit time would show a sudden change at a certain critical time. Interestingly, at the same critical time, the composite system dynamics would exhibit a sudden transition from classical decoherence to quantum decoherence. 展开更多
关键词 quantum information quantum decoherence quantum speed limit time
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Two-stage scheduling on batch and single machines with limited waiting time constraint
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作者 Zhongshun SHI Zewen HUANG Leyuan SHI 《Frontiers of Engineering Management》 2017年第3期368-374,共7页
This study addresses the problem of two-stage scheduling on batch and single machines with limited waiting time constraint; thus, the makespan is minimized.A mixed-integer linear programming model is proposed for this... This study addresses the problem of two-stage scheduling on batch and single machines with limited waiting time constraint; thus, the makespan is minimized.A mixed-integer linear programming model is proposed for this problem. Three tight lower bounds and a heuristic algorithm are developed. The worst-case performance of the proposed algorithm is discussed. A hybrid differential evolution algorithm is also developed to improve the solution quantity. Numerical results show that the hybrid algorithm is capable of obtaining high-quality solutions and exhibits a competitive 展开更多
关键词 batch machine flow shop MAKESPAN limited waiting time
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A new protocol for concurrently allocating licensed spectrum to underlay cognitive users
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作者 Sabyasachi Chatterjee Prabir Banerjee Mita Nasipuri 《Digital Communications and Networks》 SCIE 2018年第3期200-208,共9页
Cognitive radio technology makes efficient use of the valuable radio frequency spectrum in a non-interfering manner to solve the problem of spectrum scarcity. This paper aims to design a scheme for the concurrent use ... Cognitive radio technology makes efficient use of the valuable radio frequency spectrum in a non-interfering manner to solve the problem of spectrum scarcity. This paper aims to design a scheme for the concurrent use of licensed frequencies by Underlay Cognitive Users (UCUs). We develop a new receiver-initiated Medium Access Control (MAC) protocol to facilitate the selections of alternative reliable carrier frequencies. A circuit is designed to establish reliable carrier selections based on the Received Signal Strength Indicator (RSSI) at the receiving end. Based on both packet-level simulations and various performance parameters, a comparison is carried out among conventional techniques, including the Multiple Access with Collision Avoidance (MACA) and MACA by invitation(MACA-BI) techniques, and our scheme. The simulated results demonstrate that when conventional techniques are used, the system overhead time increases from 0.5 s on the first attempt to 16.5 s on the sixth attempt. In the proposed scheme under the same failure condition, overhead time varies from 0.5 s to 2 s. This improvement is due to the complete elimination of the exponential waiting time that occurs during failed transmissions. An average efficiency of 60% is achieved with our scheme while only 43% and 34% average efficiencies are achieved with the MACA and MACA-BI techniques, respectively. The throughput performance of our scheme on the fourth attempt is 7 Mbps, whereas for the MACA and MACA-BI protocols, it is 1.9 Mbps and 2.2 Mbps respectively. 展开更多
关键词 Exponential back-off time Interference temperature limit Medium-access control PROTOCOL Received signal strength indicator Underlay cognitive user
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Limit of occupation time of super Brownian motionon Sierpinski gasket
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《Chinese Science Bulletin》 SCIE CAS 1998年第7期614-614,共1页
关键词 time Limit of occupation time of super Brownian motionon Sierpinski gasket
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Improvement of in situ LA-ICP-MS U-Pb dating method for carbonate minerals and its application in petroleum geology 被引量:1
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作者 Xuesong Lu Lili GUI +9 位作者 Weiyan CHEN Shaobo LIU Shitou WU Junjia FAN Qiang LIU Jing SUN Liangliang ZHANG Yang XIAO Wenxia YANG Rizhou CAO 《Science China Earth Sciences》 SCIE EI CAS CSCD 2023年第12期2914-2929,共16页
In situ carbonate U-Pb dating is gaining popularity,and it has great potential for application in petroleum geology.However,the low U content(<10μg/g)and high common Pb content of carbonate minerals,along with the... In situ carbonate U-Pb dating is gaining popularity,and it has great potential for application in petroleum geology.However,the low U content(<10μg/g)and high common Pb content of carbonate minerals,along with the uneven distribution of U and Pb and the lack of matrix-matched reference material make carbonate U-Pb dating inaccurate and less successful,which limits the widespread application in geosciences.This study evaluated the limitations of in situ carbonate U-Pb dating and proposed a method to rationally determine the laser ablation parameters of samples by improving the experimental approach based on the laser ablation sector field inductively coupled plasma mass spectrometry(LA-SF-ICP-MS).By setting a different spot size and laser frequency for the reference material and unknown samples in the same session based on the U content of the sample,the ablation craters of the reference material and unknown samples were given the same depth/width ratio,avoiding systematic offset caused by differences in down-hole element fractionation and reducing the consume of reference material.Depending on the heterogeneous distribution of U and Pb contents in carbonate minerals,the method of grid screening and setting ablation spots during screening were used to quickly select domains with high U and low common Pb,which improves the efficiency of setting laser spots and the success rate of dating,as well as reduces the experimental time and economic cost.The accuracy and success rate of carbonate U-Pb dating were effectively improved by improving the experimental method,and the technique was applied to two carbonate samples with low U and high common Pb contents that were difficult to date by traditional methods.The two samples are the saddle dolomite in the central Sichuan Basin and the calcite cement in the sandstone reservoir of the Cretaceous Qingshuihe Formation in the South Junggar Basin.The robust ages have been obtained,which constrains the timing of the diagenetic and hydrocarbon accumulation process in the studied area. 展开更多
关键词 Carbonate U-Pb dating LA-SF-ICP-MS Ablation craters Fractionation effects Systematic offset Critical time limitation
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A Central Limit Theorem for Branching Brownian Motion with Random Immigration 被引量:1
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作者 Hong Yan SUN 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2014年第1期69-78,共10页
We establish a central limit theorem for a branching Brownian motion with random immigration under the annealed law,where the immigration is determined by another branching Brownian motion.The limit is a Gaussian rand... We establish a central limit theorem for a branching Brownian motion with random immigration under the annealed law,where the immigration is determined by another branching Brownian motion.The limit is a Gaussian random measure and the normalization is t3/4for d=3 and t1/2for d≥4,where in the critical dimension d=4 both the immigration and the branching Brownian motion itself make contributions to the covariance of the limit. 展开更多
关键词 Branching Brownian motion random immigration central limit theorem occupation time
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Fundamental algorithm and computational codes for the light beam propagation in high power laser system
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作者 郭弘 胡巍 +1 位作者 刘承宜 邓锡铭 《Science China(Technological Sciences)》 SCIE EI CAS 2001年第1期102-112,共11页
The fundamental algorithm of light beam propagation in high powerlaser system is investigated and the corresponding computational codes are given. It is shown that the number of modulation ring due to the diffraction ... The fundamental algorithm of light beam propagation in high powerlaser system is investigated and the corresponding computational codes are given. It is shown that the number of modulation ring due to the diffraction is related to the size of the pinhole in spatial filter (in terms of the times of diffraction limitation, i.e. TDL) and the Fresnel number of the laser system; for the complex laser system with multi-spatial filters and free space, the system can be investigated by the reciprocal rule of operators. 展开更多
关键词 diffraction modulation ring (DMR) diffraction modulation depth (DMD) times of diffraction limitation (TDL) Fresnel number reciprocity of operator
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民间音乐的审美时空
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作者 方光耀 《扬州大学学报(人文社会科学版)》 2015年第6期107-111,共5页
时空观是个体基于生命有限性而追求在群体生命中实现超越与不朽的一种生命意识,人基于对存在时空有限性的深切体悟,在与环境周而复始的和谐相处与成长中,生发出超越性意识,由此形成绵延不绝的无限性时间意识与表达。在对现实有限适应与... 时空观是个体基于生命有限性而追求在群体生命中实现超越与不朽的一种生命意识,人基于对存在时空有限性的深切体悟,在与环境周而复始的和谐相处与成长中,生发出超越性意识,由此形成绵延不绝的无限性时间意识与表达。在对现实有限适应与超越性存在中,在对未来无限追求的时空意识中,抵达音乐审美时空意象的无限性境界。 展开更多
关键词 民间音乐 时空意识 审美时空 有限性 超越性
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