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ARCADE 2 Spatial Roar, What Theory of Relation Reveals
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作者 Russell Bagdoo 《Journal of Modern Physics》 2024年第5期690-719,共30页
The theory of Relation provides an explanation for the Arcade 2 excess. It assumes that the isotropic radio emission measured by the Arcade 2 Collaboration, which is 5 - 6 times brighter than the expected contribution... The theory of Relation provides an explanation for the Arcade 2 excess. It assumes that the isotropic radio emission measured by the Arcade 2 Collaboration, which is 5 - 6 times brighter than the expected contributions from known extra-galactic sources, is the residue of an immense primitive energy of ordinary matter released by a relativistic bang almost 100 million years after the big bang, which gave the mass-energy the missing gravity to activate contraction. This relativistic bang, via a Lorentz energy transformation, would have released enormous energy held to be the source of the powerful radio noise detected by the NASA researchers. This transformation would have simultaneously triggered the formation of the first stars from dense gas and the reionization of less dense neutral gas. This departs from the idea that continuous reionization began after the formation of the first stars. We emphasize the importance of primordial magnetic fields, which would have generated significant density fluctuations during recombination and acted as a direct seed for cosmic structures. The first stars and galaxies were bathed in strong magnetic fields that gave rise to the radio microwave din (boom) discovered by Arcade 2. These intense magnetic fields alter the trajectory of charged particles zooming near the speed of light, triggering the space roar and emitting radiation that forms a synchrotron radio background. The theory of Relation offers an alternative to the Lambda-CDM cosmological model, which has become the standard model of the big bang, which leads straight to the vacuum catastrophe. 展开更多
关键词 Arcade 2 Excess relativistic Bang Theory of relation Lorentz energy Transformation Cosmic Statics Cosmic Boom Synchrotron Radio Background Primordial Magnetic Fields
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Effect of Coarse Aggregate Size on and Crack Opening in Normal and Relationship between Stress High Strength Concretes 被引量:4
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作者 Jun ZHANG Qian LIU Lin WANG 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2005年第5期691-700,共10页
Fine and coarse aggregates play an important role in the fracture of concrete. However, quantitative information available on the effect of the coarse aggregate size on the fracture properties of concrete is still lim... Fine and coarse aggregates play an important role in the fracture of concrete. However, quantitative information available on the effect of the coarse aggregate size on the fracture properties of concrete is still limited. In the present paper, the effect of coarse aggregate size (single grade of 5~10, 10~16, 16~20 and 20~25 mm) on stress-crack opening (σ-w) relation in normal and high strength concretes (compressive strength of 40 and 80 MPa, respectively) was studied. The investigation was based on three-point bending tests implemented by fictitious crack analysis. The result shows that coarse aggregate size and cement matrix strength significantly influence the shape of σ-w curve. For a given total aggregate content, in normal strength concrete, smaller size of aggregate leads to a high tensile strength and a sharp stress drop after the peak stress. The smaller the coarse aggregate, the steeper the σ-w curve. By contrast, in high strength concrete, the effect of aggregate size on σ-w relation almost vanishes. A similar σ-w relation is obtained for the concrete except for the case of 20~25 mm coarse aggregate size. The stress drop after the peak stress is more significant for high strength concrete than that for normal strength concrete. Meanwhile, the smaller the coarse aggregate size, the higher the flexural strength. Fracture energy and characteristic length increase with increasing coarse aggregate size in both normal and high strength concretes. 展开更多
关键词 Aggregate size Stress-crack opening relation Fracture energy Bending test
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Effect of Relative Stress on Post-Peak Uniaxial Compression Fracture Energy of Concrete 被引量:4
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作者 王学滨 PANYi-shan 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2003年第4期89-92,共4页
Fracture energy in strain softening regime was investigated analytically by considering microstructures interaction and interplay.Based on gradient-dependent plasticity, the thickness of localized band was determined ... Fracture energy in strain softening regime was investigated analytically by considering microstructures interaction and interplay.Based on gradient-dependent plasticity, the thickness of localized band was determined completely and strictly by characteristic length in relation to average grain diameter.After obtaining the plastic shear displacement of the band,the formula on axial response of concrete was proposed and the analytical post-peak fracture energy was deduced.A comparison between present theoretical results and earlier experimental results was carried out and the analytical result is reasonable and has a plausible foundation as considering the localized failure theoretically.Decreasing the relative stress leads to increasing the fracture energy non-linearly.The larger the shear elastic modulus and shear softening modulus,the lower the post-peak fracture energy.A larger fracture energy is caused by a larger thickness of shear band or a larger characteristic length of concrete material.If the inclination angle of the shear band and the compressive strength are not concerned with structural size of specimen,the post-peak fracture energy is size independent. 展开更多
关键词 fracture energy relative stress gradient-dependent plasticity thickness of shear band uniaxial compression characteristic length
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Relations Between Stabilities and Structures of Closo Borane Dianions 被引量:2
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作者 LI Ping 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第6期724-734,共11页
An effective method to investigate the stabilities of a series of new closo-BnHn2- (n = 12, 14, 16, 18, 20, 22, 24, 30) was put forward with the aid of G96PW91/SHC calculations. Stabilities are related to the relati... An effective method to investigate the stabilities of a series of new closo-BnHn2- (n = 12, 14, 16, 18, 20, 22, 24, 30) was put forward with the aid of G96PW91/SHC calculations. Stabilities are related to the relative stabilized energies (RSE) and the 2e3c bound geometries of closo-BnHn2-. The structures in which a boron atom connects to four atoms up to seven are stable and appear in many borides because of the lower relative stabilized energy. In geometries, both triangular and quadrangular faces are in favor of forming the structures of closo-BnHn2-. The energies of optimized geometries support the existence of these new compounds. By employing both RSE and AE per boron atom in cage, the stabilities were studied to predict the probabilities of unknown clusters in existence. The electron-deficient clusters can be understood that the positive holes should be disperse to every triangular face and lead to share the holes, wherever there are not enough electrons to occupy them. The negative charges which anions carry distribute to 2e3c bonds to increase the stabilities. 展开更多
关键词 closo-BnHn^2- relative stabilized energy geometry electronic structure
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Relative energy zero ratio-based approach for identifying pulse-like ground motions 被引量:2
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作者 Liu Ping Li Ning +2 位作者 Ma Hua Xie Lili Zhou Baofeng 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2020年第1期1-16,共16页
Pulse-like ground motions are capable of inflicting significant damage to structures. Efficient classification of pulse-like ground motion is of great importance when performing the seismic assessment in near-fault re... Pulse-like ground motions are capable of inflicting significant damage to structures. Efficient classification of pulse-like ground motion is of great importance when performing the seismic assessment in near-fault regions. In this study, a new method for identifying the velocity pulses is proposed, based on different trends of two parameters: the short-time energy and the short-time zero crossing rate of a ground motion record. A new pulse indicator, the relative energy zero ratio(REZR), is defined to qualitatively identify pulse-like features. The threshold for pulse-like ground motions is derived and compared with two other identification methods through statistical analysis. The proposed procedure not only shows good accuracy and efficiency when identifying pulse-like ground motions but also exhibits good performance for classifying records with high-frequency noise and discontinuous pulses. The REZR method does not require a waveform formula to express and fit the potential velocity pulses;it is a purely signal-based classification method. Finally, the proposed procedure is used to evaluate the contribution of pulse-like motions to the total input energy of a seismic record, which dramatically increases the seismic damage potential. 展开更多
关键词 pulse-like ground motion velocity pulse relative energy zero-crossing ratio short-time input energy shorttime zero crossing rate
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A Revised Interpretation of the Thermodynamic Theory Including the Einstein Mass-Energy Relation <i>E</i>= <i>mc</i><sup>2</sup> 被引量:1
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作者 Jean-Louis Tane 《Journal of Applied Mathematics and Physics》 2020年第3期392-405,共14页
Thermodynamics being among the most synthetic theories of physics and the mass-energy relation E = mc2 among the most general equations of science, it is somewhat surprising that this latter is not explicitly present ... Thermodynamics being among the most synthetic theories of physics and the mass-energy relation E = mc2 among the most general equations of science, it is somewhat surprising that this latter is not explicitly present in the laws of thermodynamics. Coupling this observation with the conceptual difficulties often felt in learning thermodynamics leads to the idea that both situations may have the same cause. On the basis of these clues, this paper is intended to provide complementary arguments to a hypothesis already presented. It consists of showing the existence of an imperfect compatibility between the conventional formulations of the first and second laws of thermodynamics and suggesting the need of the mass-energy relation to solving the problem. 展开更多
关键词 Thermodynamics Entropy energy Einstein’s Mass-energy relatION relativity
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Energy Balance-related Behaviors Are Related to Cardiometabolic Parameters and Predict Adiposity in 8-14-year-old Overweight Chinese Children One Year Later 被引量:1
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作者 LI Liu Bai WANG Nan +4 位作者 WU Xu Long WANG Ling LI Jing Jing YANG Miao MA Jun 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2016年第10期754-757,共4页
To identify target energy balance-related behaviors(ERBs),baseline data from 141overweight or obese schoolchildren(aged 8-14years old)was used to predict adiposity[body mass index(BMI)and fat percentage]one year... To identify target energy balance-related behaviors(ERBs),baseline data from 141overweight or obese schoolchildren(aged 8-14years old)was used to predict adiposity[body mass index(BMI)and fat percentage]one year later.The ERBs included a modified Dietary Approach to Stop Hypertension diet score(DASH score),leisure-time physical activity(PA,days/week),and leisure screen time(minutes/day).Several cardiometabolic variables were measured in the fasting state, including systolic blood pressure (SBP), diastolic blood pressure (DBP), blood glucose (GLU), total cholesterol (TC), triglycerides (TG), low-density lipoprotein (LDL-C), and high-density lipoprotein (HDL-C). 展开更多
关键词 energy Balance-related Behaviors Are related to Cardiometabolic Parameters and Predict Adiposity in 8-14-year-old Overweight Chinese Children One Year Later BMI body
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NEW CONSTITUTIVE RELATIONSHIP OF INCOMPRESSIBLE HYPERELASTICITY
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作者 赵国兴 王寿梅 《Chinese Journal of Aeronautics》 SCIE EI CSCD 1998年第1期16-23,共8页
NEWCONSTITUTIVERELATIONSHIPOFINCOMPRESSIBLEHYPERELASTICITYZhaoGuoxing(赵国兴),WangShoumei(王寿梅)(InstituteofSolid... NEWCONSTITUTIVERELATIONSHIPOFINCOMPRESSIBLEHYPERELASTICITYZhaoGuoxing(赵国兴),WangShoumei(王寿梅)(InstituteofSolidMechanics,Beijing... 展开更多
关键词 incompressible hyperelasticity strain energy constitutive relation RUBBER
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Failure of the free energy relation under a non-Markovian heat bath temperature change
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作者 曹亮 Michael Cross 郑志刚 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第9期1-6,共6页
We investigate the free energy relation for a system contacting with a non-Markovian heat bath and find that the validity of the relation sensitively depends on the non-Markovian memory effect, which is especially rel... We investigate the free energy relation for a system contacting with a non-Markovian heat bath and find that the validity of the relation sensitively depends on the non-Markovian memory effect, which is especially related go the initial preparation effect. This memory effect drives the statistical distribution of the system out of the initial preparation, even if the system starts from an equilibrium state. This leads to the violation of the free energy relation. A possible way of eliminating this memory effect is proposed. 展开更多
关键词 free energy relation non-Markovian heat bath initial preparation effect
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A pseudoenergy wave-activity relation for ageostrophic and non-hydrostatic moist atmosphere 被引量:1
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作者 冉令坤 平凡 《Chinese Physics B》 SCIE EI CAS CSCD 2015年第5期656-663,共8页
By employing the energy-Casimir method, a three-dimensional virtual pseudoenergy wave-activity relation for a moist atmosphere is derived from a complete system of nonhydrostatic equations in Cartesian coordinates. Si... By employing the energy-Casimir method, a three-dimensional virtual pseudoenergy wave-activity relation for a moist atmosphere is derived from a complete system of nonhydrostatic equations in Cartesian coordinates. Since this system of equations includes the effects of water substance, mass forcing, diabatic heating, and dissipations, the derived wave-activity relation generalizes the previous result for a dry atmosphere. The Casimir function used in the derivation is a monotonous function of virtual potential vorticity and virtual potential temperature. A virtual energy equation is employed (in place of the previous zonal momentum equation) in the derivation, and the basic state is stationary but can be three-dimensional or, at least, not necessarily zonally symmetric. The derived wave-activity relation is further used for the diagnosis of the evolution and propagation of meso-scale weather systems leading to heavy rainfall. Our diagnosis of two real eases of heavy precipitation shows that positive anomalies of the virtual pseudoenergy wave-activity density correspond well with the strong precipitation and are capable of indicating the movement of the precipitation region. This is largely due to the cyclonic vorticity perturbation and the vertically increasing virtual potential temperature over the precipitation region. 展开更多
关键词 energy-Casimir method pseudoenergy wave-activity relation wave-activity density
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Novel Ring Compression Test Method to Determine the Stress-Strain Relations and Mechanical Properties of Metallic Materials
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作者 Guangzhao Han Lixun Cai +4 位作者 Chen Bao Bo Liang Yang Lyu Maobo Huang Xiaokun Liu 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2021年第6期114-125,共12页
Although there are methods for testing the stress-strain relation and strength,which are the most fundamental and important properties of metallic materials,their application to small-volume materials and tube compone... Although there are methods for testing the stress-strain relation and strength,which are the most fundamental and important properties of metallic materials,their application to small-volume materials and tube components is lim-ited.In this study,based on energy density equivalence,a new dimensionless elastoplastic load-displacement model for compressed metal rings with isotropy and constitutive power law is proposed to describe the relations among the geometric dimensions,Hollomon law parameters,load,and displacement.Furthermore,a novel test method was developed to determine the elastic modulus,stress-strain relation,yield and tensile strength via ring compression test.The universality and accuracy of the method were verified within a wide range of imaginary materials using finite element analysis(FEA),and the results show that the stress-strain curves obtained by this method are consistent with those inputted in the FEA program.Additionally,a series of ring compression tests were performed for seven metallic materials.It was found that the stress-strain curves and mechanical properties predicted by the method agreed with the uniaxial tensile results.With its low material consumption,the ring compression test has the potential to be as an alternative to traditional tensile test when direct tension method is limited. 展开更多
关键词 Ring compression energy density equivalence Stress-strain relation STRENGTH Metallic material
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Study of main body element of crustal strain and its relationship with moderate-strong earthquakes
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作者 陈兵 张晓亮 +3 位作者 王庆良 刘文义 王敏 薄万举 《Acta Seismologica Sinica(English Edition)》 EI CSCD 2006年第1期54-61,共8页
In this paper, progress in strain study of blocks and faults by GPS data are discussed, and the concept that active structures between blocks are the main body of crustal strain is clarified. By energy transfer princi... In this paper, progress in strain study of blocks and faults by GPS data are discussed, and the concept that active structures between blocks are the main body of crustal strain is clarified. By energy transfer principle of elastic mechanics, the relation between strain around faults and tectonic force on fault surfaces is set up and main body element model of crustal strain is constructed. Finally, the relation between mechanical evolution of model and seismogenic process of Kunlun earthquake (Ms=8.1) is discussed by continuous GPS data of datum stations. The result suggests that the relatively relaxed change under background of strong compressing and shearing may help to trigger moderate-strong earthquakes. 展开更多
关键词 main body element of crustal strain tectonic force on fault surface energy transfer GPS benchmark site postseismic relative relaxation
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Dark Energy and Dark Matter as Relative Energy between Quarks in Nucleon
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作者 F. C. Hoh 《Journal of Modern Physics》 2019年第6期635-640,共6页
Dark energy and dark matter in the universe are assigned to the positive and negative, respectively, “hidden” relative energies between the diquark and quark in nucleon in the scalar strong interaction hadron theory... Dark energy and dark matter in the universe are assigned to the positive and negative, respectively, “hidden” relative energies between the diquark and quark in nucleon in the scalar strong interaction hadron theory, SSI. The origin of the “darkness” is that quarks cannot be observed individually. 展开更多
关键词 relative energy among QUARKS Scalar Strong Interaction HADRON Theory DARK energy DARK Matter
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Cosmic Applications of Relative Energy between Quarks in Nucleons
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作者 F. C. Hoh 《Journal of Modern Physics》 2019年第14期1645-1658,共14页
By taking into account the relative energy between the diquark and the quark in nucleons, the gravitational singularity in a black hole created from a collapsing neutron star can be removed;compatibility with quantum ... By taking into account the relative energy between the diquark and the quark in nucleons, the gravitational singularity in a black hole created from a collapsing neutron star can be removed;compatibility with quantum mechanics is restored. This black hole becomes a “black” neutron star. The negative relative energy identified as dark matter in the previous paper can account for the galaxy rotation curve. The positive relative energy identified as dark energy in the previous paper can explain the accelerating expansion of the universe. A possible scenario for cosmic ray generation is given. 展开更多
关键词 Gravitational Singularity relative energy BETWEEN QUARKS Scalar Strong Interaction HADRON Theory “Weightless” NEUTRON Black NEUTRON Star Galaxy Rotation Curve Accelerating Expansion of Universe COSMIC Ray
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Critical Behavior of the Energy Gap and Its Relation with the Berry Phase Close to the Excited State Quantum Phase Transition in the Lipkin Model
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作者 袁子刚 张平 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第6期1-5,共5页
In our previous work [Phys. Rev. A 85 (2012) 044102], we studied the Berry phase of the ground state and exited states in the Lipkin model. In this work, using the Hellmann-Feynman theorem, we derive the relation be... In our previous work [Phys. Rev. A 85 (2012) 044102], we studied the Berry phase of the ground state and exited states in the Lipkin model. In this work, using the Hellmann-Feynman theorem, we derive the relation between the energy gap and the Berry phase closed to the excited state quantum phase transition (ESQPT) in the Lipkin model. It is found that the energy gap is approximately linearly dependent on the Berry phase being closed to the ESQPT for large N. As a result, the critical behavior of the energy gap is similar to that of the Berry phase. In addition, we also perform a semiclassical qualitative analysis about the critical behavior of the energy gap. 展开更多
关键词 Critical Behavior of the energy Gap and Its relation with the Berry Phase Close to the Excited State Quantum Phase Transition in the Lipkin Model
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A Theoretical Study on Energy of a Gaseous System Vis-a-Vis Mass and Temperature
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作者 Santosh K. Karn Necati Demiroglu 《Journal of Electronics Cooling and Thermal Control》 CAS 2023年第1期1-8,共8页
To study various properties of a gas has been a subject of rational curiosity in pneumatic sciences. A gaseous system, in general, is studied by using four measurable parameters namely, the pressure, volume, number of... To study various properties of a gas has been a subject of rational curiosity in pneumatic sciences. A gaseous system, in general, is studied by using four measurable parameters namely, the pressure, volume, number of moles and temperature. In the present work, an attempt is made to study the variation of energy of an ideal gas with the two measurable parameters, the mass and temperature of the gas. Using the well known ideal gas equation, PV = nRT where symbols have their usual meanings and some simple mathematical operations widely used in physics, chemistry and mathematics in a transparent manner, an equation of state relating the three variables, the energy, mass and temperature of an ideal gas is obtained. It is found that energy of an ideal gas is equal to the product of mass and temperature of the gas. This gives a direct relationship between the energy, mass and temperature of the gas. Out of the three variables, the energy, mass and temperature of an ideal gas, if one of the parameters is held constant, the other two variables can be measured. At a constant temperature, when the power or energy is stabilized, the increase in the mass of the gas may affect the new works and an engine can therefore be prevented from overheating. 展开更多
关键词 HYDRODYNAMICS Low Temperature Fluid Flow Ideal Gas Equation of State energy MASS Temperature and Their relation
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General Derivation of Mass-Energy Relation without Electrodynamics or Einstein’s Postulates
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作者 Mario Rabinowitz 《Journal of Modern Physics》 2015年第9期1243-1248,共6页
The mass-energy equation ?is derived in general from Newton’s equation of motion without use of electrodynamics, or Einstein’s Postulates which were presented in his superb 1905 paper on Special Relativity (SR). Thi... The mass-energy equation ?is derived in general from Newton’s equation of motion without use of electrodynamics, or Einstein’s Postulates which were presented in his superb 1905 paper on Special Relativity (SR). This was previously not thought to be possible. This novel derivation of an accelerated body of rest mass m0 is compared with the traditional SR inertial derivation. A discussion is given of pre-1905, electrostatic and electrodynamic derivations of the mass-energy relation yielding , as well as more recent ones. A concise pre-relativity history of the mass-energy relation is traced back to Newton in 1717. 展开更多
关键词 Mass-energy relatION Mass Variation Inertia EINSTEIN Newton Special relativity Mass-energy Origin Mass-energy History
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Damage Identification in Beam-Type Structures Using Pseudo Strain Energy Density and Grey Relation Coefficient
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作者 陈晓强 朱宏平 +1 位作者 张俊兵 李林 《Transactions of Tianjin University》 EI CAS 2010年第2期96-103,共8页
Based on pseudo strain energy density (PSED) and grey relation coefficient (GRC), an index is proposed to locate the damage of beam-type structures in time-domain. The genetic algorithm (GA) is utilized to identify th... Based on pseudo strain energy density (PSED) and grey relation coefficient (GRC), an index is proposed to locate the damage of beam-type structures in time-domain. The genetic algorithm (GA) is utilized to identify the structural damage severity of confirmed damaged locations. Furthermore, a systematic damage identification program based on GA is developed on MATLAB platform. ANSYS is employed to conduct the finite element analysis of complicated civil engineering structures, which is embedded with interface technique. The two-step damage identification is verified by a finite element model of Xinxingtang Highway Bridge and a laboratory beam model based on polyvinylidens fluoride (PVDF). The bridge model was constructed with 57 girder segments, and simulated with 58 measurement points. The damaged segments were located accurately by GRC index regardless of damage extents and noise levels. With stiffness reduction factors of detected segments as variables, the GA program evolved for 150 generations in 6 h and identified the damage extent with the maximum errors of 1% and 3% corresponding to the noise to signal ratios of 0 and 5%, respectively. In contrast, the common GA-based method without using GRC index evolved for 600 generations in 24 h, but failed to obtain satisfactory results. In the laboratory test, PVDF patches were used as dynamic strain sensors, and the damage locations were identified due to the fact that GRC indexes of points near damaged elements were smaller than 0.6 while those of others were larger than 0.6. The GA-based damage quantification was also consistent with the value of crack depth in the beam model. 展开更多
关键词 灰色关联系数 能量密度 损伤识别 应变 结构
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节约体能法对宫颈癌同步放化疗病人癌因性疲乏的干预效果 被引量:1
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作者 芦沁蕊 焦培娟 +2 位作者 周楠 智诗涵 顾炜 《护理研究》 北大核心 2024年第2期258-266,共9页
目的:探讨节约体能法对宫颈癌同步放化疗病人癌因性疲乏(CRF)的干预效果。方法:采用方便抽样法,选取2018年4月—12月在西安交通大学第一附属医院放疗病区住院治疗的108例宫颈癌病人作为研究对象,按入院时间分为对照组和干预组,每组54例... 目的:探讨节约体能法对宫颈癌同步放化疗病人癌因性疲乏(CRF)的干预效果。方法:采用方便抽样法,选取2018年4月—12月在西安交通大学第一附属医院放疗病区住院治疗的108例宫颈癌病人作为研究对象,按入院时间分为对照组和干预组,每组54例。对照组给予放疗科常规护理,干预组在放疗科常规护理基础上给予节约体能法的干预。于治疗开始前、放疗5次结束、放疗10次结束、放疗15次结束、放疗20次结束及放疗25次结束后采用中文版Piper疲乏修订量表(RPFS)对病人CRF严重程度进行评价。结果:干预期间对照组流失3例病人,干预组流失4例病人,最终对照组51例病人完成研究,干预组50例病人完成研究。中文版RPFS总分及行为疲乏、情感疲乏、感知疲乏、认知疲乏维度得分的干预主效应、时间主效应均有统计学意义(P<0.05)。在治疗开始前和放疗5次结束2个时间点,对照组与干预组的中文版RPFS总分及各维度得分差异无统计学意义(P>0.05)。在放疗10次结束、放疗15次结束、放疗20次结束及放疗25次结束4个时间点,对照组与干预组的中文版RPFS总分及各维度得分差异有统计学意义(P<0.05)。结论:宫颈癌同步放化疗病人CRF水平在治疗期间升高,节约体能法可有效降低各时间点宫颈癌同步放化疗病人的CRF水平。 展开更多
关键词 宫颈癌 癌因性疲乏(CRF) 节约体能法 放疗 化疗 护理
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基于季节性碳交易机制的园区综合能源系统低碳经济调度 被引量:4
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作者 颜宁 马广超 +2 位作者 李相俊 李洋 马少华 《中国电机工程学报》 EI CSCD 北大核心 2024年第3期918-931,I0006,共15页
为有效提高碳排放配额分配的合理性,并且避免年度结算时碳排放量超标导致环境污染加剧问题,提出基于奖惩因子的季节性碳交易机制,以园区综合能源系统(park integrated energy system,PIES)为对象进行低碳经济调度。首先,构建包含能量层... 为有效提高碳排放配额分配的合理性,并且避免年度结算时碳排放量超标导致环境污染加剧问题,提出基于奖惩因子的季节性碳交易机制,以园区综合能源系统(park integrated energy system,PIES)为对象进行低碳经济调度。首先,构建包含能量层–碳流层–管理层的综合能源系统(integrated energy system,IES)运行框架,建立电气热多能流供需动态一致性模型;其次,分析系统内“日–季节–年度”碳排放特性,打破传统应用指标法的配额分配方法,采用灰色关联分析法建立碳排放配额分配模型,并基于奖惩阶梯碳价制定季节性碳交易机制;最后,以系统内全寿命周期运行成本及碳交易成本最小为目标,对执行季节性碳交易机制的PIES进行低碳经济调度,分析长时间尺度下季节性储能参与调度的减碳量。搭建IEEE 33节点电网5节点气网7节点热网的PIES,并基于多场景进行算例分析,验证此调度方法能够实现零碳经济运行,保证系统供能可靠性,为建立零碳园区奠定理论基础。 展开更多
关键词 园区综合能源系统 季节性碳交易机制 奖惩阶梯碳价 灰色关联分析法
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