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万有引力与高斯定理——类比在物理学中的应用 被引量:14
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作者 蔡香民 《安徽师范大学学报(自然科学版)》 CAS 2002年第2期147-150,共4页
类比方法对物理学的发展起着积极的推动作用 .本文将万有引力场和静电场作类比 ,从而得出万有引力场中类比高斯定理公式 ,并应用类比公式解决具有对称性的万有引力问题 .
关键词 万有引力 高斯定理 类比 物理学 静电场 对称性
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基于引力场理论的复杂网络路由选择策略研究 被引量:13
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作者 刘刚 李永树 《物理学报》 SCIE EI CAS CSCD 北大核心 2012年第24期548-557,共10页
利用引力场理论对网络传输过程中节点激发的引力场进行了描述,建立了节点的引力场方程,引入α和γ两个参数,用于调节数据传输对节点畅通程度、节点传输能力和路径长度的依赖程度.基于节点的引力场,提出了一种高效的路由选择算法,该算法... 利用引力场理论对网络传输过程中节点激发的引力场进行了描述,建立了节点的引力场方程,引入α和γ两个参数,用于调节数据传输对节点畅通程度、节点传输能力和路径长度的依赖程度.基于节点的引力场,提出了一种高效的路由选择算法,该算法下数据包将沿着所受路径引力最大的方向进行传递.为检验算法的有效性,引入有序状态参数η,利用其由自由流到拥塞态的指标流量相变值度量网络的吞吐量,并通过节点的介中心值B分析网络的传输性能和拥塞分布.针对算法在不同α,γ取值条件下的路由情况进行了仿真.仿真结果显示,与传统最短路由算法相比,本文算法将网络传输能力提高了数倍,有效地均衡了节点的介中心值分布,传输路径平均长度Lavg随负载量R的增加表现出先增后减的变化趋势,而参数α与γ值的变化对网络传输能力几乎没有影响,说明本文路由算法的性能不依赖于α与γ,对于可行域内任意的α与γ,算法都能保证网络传输能力近似相等. 展开更多
关键词 复杂网络 引力场 路由策略 拥塞
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地球自转和固体潮对地球重力场时变特征的影响 被引量:6
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作者 张捍卫 柴洪洲 +2 位作者 王占统 郑勇 刘长建 《大地测量与地球动力学》 CSCD 2002年第1期76-80,共5页
精密和详细测定地球重力场及其时间变化 ,是目前卫星重力测量的主要课题。基于高精度的固体潮展开 ,研究了地球自转和固体潮对地球重力场时变特性的影响。给出了适合应用于潮波法的理论公式 ,该公式不同于IERS(92 ) (96 )历书频谱法公... 精密和详细测定地球重力场及其时间变化 ,是目前卫星重力测量的主要课题。基于高精度的固体潮展开 ,研究了地球自转和固体潮对地球重力场时变特性的影响。给出了适合应用于潮波法的理论公式 ,该公式不同于IERS(92 ) (96 )历书频谱法公式 ,考虑了 4阶潮汐效应 ,精度可达到 10 - 1 1 ms- 2量级。改正了 IERS(96 )关于永久性潮汐处理的不妥之处 ,即指出要用长期 L ove数代替固体潮 L ove数的理由 ,并利用潮汐数据进行了计算。 展开更多
关键词 地球自转 固体潮 地球重力场 引力位系数 时变特征
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爱因斯坦相对论在微观和宇宙范围内的应用 被引量:5
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作者 方戈亮 赵子夫 +1 位作者 周腾蛟 吕嫣 《沈阳师范大学学报(自然科学版)》 CAS 2005年第4期361-363,共3页
介绍了狭义相对论及其与量子力学的结合预言正电子的存在,广义相对论以及用此理论解释牛顿理论无法解释的水星近日点进动、光谱引力红移和太阳引力场对星光的弯曲.
关键词 狭义相对论 广义相对论 正电子 引力场
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有关引力场高斯定理的探讨 被引量:5
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作者 李儒颂 徐芹 叶文江 《物理通报》 2015年第12期103-105,108,共4页
基于牛顿的万有引力定律与静电场的库仑定律相似,均满足平方反比定律,对引力场的高斯定理进行了探讨.运用类比思想,引入虚引力场强度,提出了一种巧妙推导引力场高斯定理的新方法,并用该方法推导出引力场高斯定理的两种不同的表达形式,... 基于牛顿的万有引力定律与静电场的库仑定律相似,均满足平方反比定律,对引力场的高斯定理进行了探讨.运用类比思想,引入虚引力场强度,提出了一种巧妙推导引力场高斯定理的新方法,并用该方法推导出引力场高斯定理的两种不同的表达形式,同时对此做出了相关的分析.理论表明该方法极其简单明了,易于理解和掌握运用,具有一定的推广价值. 展开更多
关键词 引力场 高斯定理 平方反比定律 类比思想
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Unified Field Equation Generated by Longitudinal Electromagnetic (LEM) Waves
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作者 Jiang Jian-zhong Zhang Xiang-qian 《Journal of Environmental Science and Engineering(B)》 CAS 2024年第5期181-191,共11页
According to special relativity,the relationship of electromagnetic conversion in a linear moving vacuum and the relationship formula between the magnetic vector potential/scalar potential and the LEM(Longitudinal Ele... According to special relativity,the relationship of electromagnetic conversion in a linear moving vacuum and the relationship formula between the magnetic vector potential/scalar potential and the LEM(Longitudinal Electromagnetic)waves,it is inferred that the spherical vacuum space we are in undergoes outward helical motion at the speed of light following the right-hand screw rule,accompanied by a radial space expansion motion far less than the speed of light.Based on this space basis,we derive a unified field equation indicating that the gravitational field might be equivalent to the acceleration field of the radial expansion motion of our vacuum space,the strong nuclear force field presumably is generated by the light-rotation angular velocity of our space,the weak nuclear force field is most probably produced by its radial expansion motion and the electromagnetic field is undoubtedly produced by the radial linear motion of our space at the speed of light.We have also demonstrated both theoretically and experimentally that the LEM waves can generate artificial gravitational fields,and the LEM waves are the material basis of the unified field theory.Essentially,on Earth,time is the result of the relativistic length contraction effect caused by the radial space expansion speed,which leads to the rate of change of distance in the radial dimension on the unit radial space expansion speed.Moreover,based on the length contraction effect in special relativity,the time and space generated by the outward helical motion of space at the speed of light can be expressed as zero.This indicates that such motion not only does not affect the seemingly perpetually stationary space that we can constantly perceive but also enables the gravitational field formula to remain unchanged in our space.They constitute the spatio-temporal basis of the unified field theory.Based on our unified field theory,we have also discussed some forward-looking perspectives,such as motion at the speed of light,anti-gravitation fields,and interstellar t 展开更多
关键词 QED(quantum electrodynamics) LEM wave electromagnetic induction unified field equation artificial gravitation field.
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An Equivalence for Both Coulombian and Gravitational Interactions
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作者 Carmine D’Errico 《Journal of High Energy Physics, Gravitation and Cosmology》 2019年第4期1068-1089,共22页
The main purpose of this article is to demonstrate that electromagnetic and gravitational phenomenology are two different expressions of the same interaction that we can call “universal interaction”. In order to rea... The main purpose of this article is to demonstrate that electromagnetic and gravitational phenomenology are two different expressions of the same interaction that we can call “universal interaction”. In order to reach the aim, it is therefore necessary to imagine the matter in a slightly different way, as well as equivalent, to what has been done until today by the literature everywhere accepted. Even if differently imagined, this proposed structure of matter cannot and must not escape from reflecting the measurements and phenomenologies widely experimented in laboratories all over the world. In the proposed model the proton radius;the electron mass;the Avogadro constant;the existence and the mass of neutron and the existence of neutrino are theoretically derived. The main consequence is therefore a more general rewriting of Newton’s law of universal gravitation. A definitive value for the universal gravitational constant is proposed. 展开更多
关键词 gravitationAL field Electric field GUT Classic Theory of gravitation Proton RADIUS Neutron RADIUS Avogadro CONSTANT Electron MASS Neutrino MASS Newtonian CONSTANT of gravitation Language CONSTANT
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地球引力场对卫星有摄运动的一种计算方法 被引量:4
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作者 郑文虎 《应用数学和力学》 CSCD 北大核心 1997年第2期153-160,共8页
本文应用Delaunay变量,从理论力学的哈密顿方程出发,通过正则变换求解了地球引力摄动对卫星运动轨道的影响,导出卫星位置和速度随时间的变化关系.
关键词 地球引力场 哈密顿方程 摄动 人造地球卫星
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基于蚁群聚类的多目标环形分类的方法研究 被引量:3
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作者 宁姗 《工业仪表与自动化装置》 2012年第5期70-73,共4页
针对群体机器人协作进行分类问题,将机器人个体通过简单的相互作用,使它们协作来解决复杂的问题。首先,机器人采用Hu不变矩和BP神经网络对目标物体进行分类,所有机器人的移动、搬运和放置行为都是随机的,物体之间引入势力场,机器人搬运... 针对群体机器人协作进行分类问题,将机器人个体通过简单的相互作用,使它们协作来解决复杂的问题。首先,机器人采用Hu不变矩和BP神经网络对目标物体进行分类,所有机器人的移动、搬运和放置行为都是随机的,物体之间引入势力场,机器人搬运物体时受到场的作用。实验证明经过一定的时间后,物体将形成稳定的环形分类结构,实现多目标的环形分类。 展开更多
关键词 蚁群聚类 环形分类 引力场 斥力场
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对引力红移的一种探索性解释 被引量:3
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作者 苑新喜 《中国基础科学》 2013年第2期11-13,共3页
本文提出了对引力红移的一种探索性解释,计算结果与广义相对论一致。
关键词 引力场 引力红移
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On the Transition from Newtonian Gravity to General Relativity
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作者 Frank Blume 《Journal of Applied Mathematics and Physics》 2022年第5期1461-1476,共16页
Using an alternative representation of the Ricci tensor, we argue that the theory of gravitation can be easily developed in such a way that the formal description of gravity in the transition from classical Newtonian ... Using an alternative representation of the Ricci tensor, we argue that the theory of gravitation can be easily developed in such a way that the formal description of gravity in the transition from classical Newtonian physics to general relativity remains essentially unchanged. That is to say, we show how arguments concerning the plausible conceptual compatibility of Newtonian and general-relativistic models of gravity can be replaced by a demonstration of their actual formal identity. More specifically, we find that both the classical Newtonian and the general relativistic field equations are equivalent to a velocity-field divergence equation of the form v [div (v)] + div (v,v) = -4πρ where the term div (v,v) is defined to be the trace of the square of the Jacobian derivative matrix of v (or of its general-relativistic analogue). 展开更多
关键词 General Relativity Newtonian gravitation field Equations Uniform Velocity-field Representation
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Ionic Gravitation and Ionized Solid Iron Stellar Bodies
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作者 Gurcharn S. Sandhu 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2023年第2期414-437,共24页
A well-known but erroneous notion of electron degeneracy pressure has misled Astrophysics for nearly a century now. Because of their electrostatic interactions, the electrons can never exchange their momentum with pos... A well-known but erroneous notion of electron degeneracy pressure has misled Astrophysics for nearly a century now. Because of their electrostatic interactions, the electrons can never exchange their momentum with positive ions through elastic collisions and hence can never provide the so-called electron degeneracy pressure in stellar cores to counter the effect of gravity. In situations of high core densities, when the mean separation distance between atoms or ions becomes less than the normal size of their parent atoms, their electrostatic repulsion will force them into a lattice gridlock, leading to a solid state. All degenerate stellar cores constitute a solid state and the radial and hoop stresses induced by self-gravitation are proportional to the square of radius (r<sup>2</sup>). As the size of a solid iron stellar core grows, its peripheral region will experience extreme compression and will get partially ionized due to the phenomenon of pressure ionization. All so-called Neutron Stars and Black Holes are in fact Ionized Solid Iron Stellar Bodies (ISISB). The presence of ions in the peripheral regions of the ISISB will be associated with the circulation of degenerate electrons around the surface, thereby producing strong magnetic fields. A positive excess of ionic charge in all ISISB becomes a source of Ionic Gravitation through the process of polarization of neutral atoms and molecules in stellar bodies. These ISISB are the primary constituents of AGN and are the source of all non-stellar radiation and Jets of ionized matter. 展开更多
关键词 Solid Core Ionic gravitation Hoop Stress Magnetic field Black Holes AGN
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Electromagnetic Field Created by Rotation of Celestial Bodies 被引量:1
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作者 Arkady Dolginov 《Journal of Modern Physics》 2016年第16期2418-2425,共8页
The observed correlation of the angular momenta L<sup>ik</sup> and magnetic moments μ<sub>lm</sub> of celestial bodies (the Sun, planets and stars) was discussed by many au... The observed correlation of the angular momenta L<sup>ik</sup> and magnetic moments μ<sub>lm</sub> of celestial bodies (the Sun, planets and stars) was discussed by many authors but without any explanation. In this paper, a possible explanation of this phenomenon is suggested. It is shown that the function  satisfies Maxwell equations and can be considered as a function which determines the electro-magnetic properties of rotating heavy bodies. The R<sub>iklm</sub> is the Riemann tensor, which determines the gravitational field of the body, r<sub>g</sub> is the gravitational radius of the body, and η is the constant which has to be determined by observations. The field Φ<sub>lm</sub> describes the observed  correlation. It explains the stability of magnetic field of white dwarfs and neutron stars despite the ohmic dissipation. The function Φ<sub>l0</sub><sub></sub> describes the electric field created by rotating heavy bodies. The presented theory does not contradict any existed experiments and observations. 展开更多
关键词 Electromagnetic field Rotating Celestial Bodies gravitation
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基于引力场的多sink传感器网络路由选择方法
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作者 纪守领 李金宝 +1 位作者 徐辉 惠丽 《通信学报》 EI CSCD 北大核心 2008年第11期200-212,共13页
根据传感器网络中数据转发与静电场中电荷移动的相似性,将传感器网络抽象成由sink节点激发的引力场。在该引力场中,数据可以在sink节点的吸引力作用下流向sink节点。基于sink节点产生的引力场,提出了一种适用于多sink传感器网络的路由... 根据传感器网络中数据转发与静电场中电荷移动的相似性,将传感器网络抽象成由sink节点激发的引力场。在该引力场中,数据可以在sink节点的吸引力作用下流向sink节点。基于sink节点产生的引力场,提出了一种适用于多sink传感器网络的路由选择算法,该算法具有较低的时间和空间复杂性,能适应网络规模的动态变化。理论分析与实验结果表明,提出的路由方法能够有效地减少数据传输的能量消耗,降低数据丢包率,延长网络的生命周期。 展开更多
关键词 传感器网络 引力场 引力场强度 路由
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从光的波粒二象性解释引力红移现象 被引量:1
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作者 张良瑞 马慧兰 《西北轻工业学院学报》 1995年第1期54-57,共4页
本文对引力场中的引力红移现象从量子、波动两方向进行解释。以加深对引力红移现象的理解,进而验证光的波粒二象性及爱因斯坦引力场论中“等效原理’的正确性。
关键词 引力红移 引力场 等效原理 波粒二象性
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结合引力场理论的道路自动选取方法 被引量:2
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作者 韩远 王中辉 +1 位作者 徐智邦 余贝贝 《测绘科学》 CSCD 北大核心 2021年第1期189-195,共7页
针对复杂网络模型被广泛应用于道路选取的研究中,少有方法顾及道路网对偶图中多级邻居节点的影响,导致对道路的重要性评价缺乏准确性和可靠性的问题。该文将道路网对偶图节点的结构特征值视作质量,将节点间的最短距离视作距离,结合引力... 针对复杂网络模型被广泛应用于道路选取的研究中,少有方法顾及道路网对偶图中多级邻居节点的影响,导致对道路的重要性评价缺乏准确性和可靠性的问题。该文将道路网对偶图节点的结构特征值视作质量,将节点间的最短距离视作距离,结合引力场方程实现道路自动选取,较好地将道路网对偶图中多级邻居节点的影响纳入到道路重要性的计算中,从而实现对道路重要性的准确评估。通过对兰州市城关区的路网进行实验,结果表明本文方法所选取的路网较好地保持了原始道路网的整体结构、覆盖范围、密度分布、拓扑特征和连通性。 展开更多
关键词 道路选取 对偶图 多级邻居节点 引力场
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地球引力摄动对卫星轨道的影响 被引量:2
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作者 郑文虎 郑焕武 刘显奎 《西昌师范高等专科学校学报》 1999年第2期73-76,共4页
本文研究了地球引力场对卫星运动轨道的摄动,应用级数解法给出了六个根数带谐项的摄动计算公式。
关键词 引力场 摄动 卫星轨道
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Analysis of network traffic flow dynamics based on gravitational field theory
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作者 刘刚 李永树 张喜平 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第6期670-680,共11页
For further research on the gravity mechanism of the routing protocol in complex networks, we introduce the concept of routing awareness depth, which is represented by p. On this basis, we define the calculation formu... For further research on the gravity mechanism of the routing protocol in complex networks, we introduce the concept of routing awareness depth, which is represented by p. On this basis, we define the calculation formula of the gravity of the transmission route for the packet, and propose a routing strategy based on the gravitational field of the node and the routing awareness depth. In order to characterize the efficiency of the method, we introduce an order parameter, η, to measure the throughput of the network by the critical value of phase transition from free flow to congestion, and use the node betweenness centrality, B, to test the transmission efficiency of the network and congestion distribution. We simulate the network transmission performance under different values of the routing awareness depth, ρ. Simulation results show that if the value of the routing awareness depth p is too small, then the gravity of the route is composed of the attraction of very few nodes on the route, which cannot improve the capacity of the network effectively. If the value of the routing awareness depth ρ is greater than the network's average distance (l), then the capacity of the network may be improved greatly and no longer change with the sustainable increment of routing awareness depth p, and the routing strategy performance enters into a constant state. Moreover, whatever the value of the routing awareness depth p, our algorithm always effectively balances the distribution of the betweenness centrality and realizes equal distribution of the network load. 展开更多
关键词 routing strategy CONGESTION gravitation field complex networks
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Consequences of a Generalized Newtonian Gravity with an Exponential Factor
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作者 Lenser Aghalovyan​ 《International Journal of Astronomy and Astrophysics》 2020年第3期224-234,共11页
The central interaction of bodies is investigated, which enhances the Newtonian interaction by the exponential factor. As a consequence, it has been shown that Black Holes are subordinate to this enhanced interaction.... The central interaction of bodies is investigated, which enhances the Newtonian interaction by the exponential factor. As a consequence, it has been shown that Black Holes are subordinate to this enhanced interaction. All Black Holes can be systematized in accordance with their mass, the radius of the event horizon and the gravitational field intensity exponent, created by the Black Hole. 展开更多
关键词 gravitation Central Interaction Potential field Escape Velocity Black Hole Density
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The Consequences of a Strengthened Newtonian Gravity at Short Distances
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作者 Lenser Aghalovyan 《International Journal of Astronomy and Astrophysics》 2018年第2期191-199,共9页
A central interaction of bodies which at short distances is stronger than Newtonian is considered. It is shown that the escape velocity from a body is essentially more than the escape velocity given by Newton’s theor... A central interaction of bodies which at short distances is stronger than Newtonian is considered. It is shown that the escape velocity from a body is essentially more than the escape velocity given by Newton’s theory. The connection of the new central interaction with the gravitational radius of a black hole is found. It is shown that the gravitational radius of a black hole may be arbitrarily large. 展开更多
关键词 gravitation Central Interaction Potential field BLACK HOLE
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