480 research outputs found

    THE PERSPECTIVE ON HUMANS IN EASTERN PHILOSOPHY

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    Eastern philosophy appeared very early in history with two typical philosophies, India and China. These are the two countries with the earliest and most influential culture and ideology in the region. Studying the entire Eastern philosophical thoughts, we can easily see that the problem of man stands out. During the process of formation and development, Chinese philosophy has taken people and human-related issues as the object of study. Theories on humans are very rich and diverse in order to clarify the human issues in many different aspects. Therefore, the article focuses on analyzing the human perspective in some basic theories to clarify the content of human theory: from the origin of formation, human nature, human’s inherent character to the development of human personality to adapt to the social community in which people live in Eastern philosophy.  Article visualizations

    Experimental Study of Prestressed Concrete Track Slab at Railroad Crossings

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    Currently, the prestressed concrete track slabs are testing installed at the field to replace the reinforced concrete track slabs at railroad crossings in Vietnam. Prestressed concrete track slabs used for 1000 mm gauge. The dimensions of each slab were designed with a length, width, and height of 2.5 m, 1.0 m, and 0.33m, respectively. This paper presents experimental measurements to analyze the behavior of the prestressed concrete track slab at railroad crossings under the action of train and truck dynamic load. Experiment measurements were implemented at the site. Eight strain gauges were mounted at three sections of the track slab to measure the deformation. HL-93 truck load and TY-7E train load were used in the test. The results show the eccentricity of the gravity center point of the prestressed wires to the centroidal axis of the transformed area. The deviation ratio between experimental and theoretical results is from 0.88% ÷ 1.25%. These results can be used to optimize the design process and limit cracks. In addition, tensile and compressive stresses in slabs are smaller than the allowable values. The results show that this track slab meets the requirements of durability and strength under the action of train and truck dynamic load

    Experimental Study of Prestressed Concrete Track Slab at Railroad Crossings

    Get PDF
    Currently, the prestressed concrete track slabs are testing installed at the field to replace the reinforced concrete track slabs at railroad crossings in Vietnam. Prestressed concrete track slabs used for 1000 mm gauge. The dimensions of each slab were designed with a length, width, and height of 2.5 m, 1.0 m, and 0.33m, respectively. This paper presents experimental measurements to analyze the behavior of the prestressed concrete track slab at railroad crossings under the action of train and truck dynamic load. Experiment measurements were implemented at the site. Eight strain gauges were mounted at three sections of the track slab to measure the deformation. HL-93 truck load and TY-7E train load were used in the test. The results show the eccentricity of the gravity center point of the prestressed wires to the centroidal axis of the transformed area. The deviation ratio between experimental and theoretical results is from 0.88% ÷ 1.25%. These results can be used to optimize the design process and limit cracks. In addition, tensile and compressive stresses in slabs are smaller than the allowable values. The results show that this track slab meets the requirements of durability and strength under the action of train and truck dynamic load

    Coherently diffractive dissociation in electron-hadron collisions: from HERA to the future EIC

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    We present numerical results on diffractive dissociation with large invariant mass diffractive final states in the scattering of an electron off a hadron. The diffractive large-mass resummation is performed using the nonlinear Kovchegov-Levin equation, taking into account running coupling corrections. For the scattering off the proton, a (modified) McLerran-Venugopalan amplitude is used as the initial condition for the nonlinear evolution, with free parameters being constrained by the HERA inclusive data. The results show a reasonable description of the HERA diffractive structure function data at moderately large diffractive mass when the impact parameter profile is constrained by the low-mass diffractive cross section data. The calculation is extended to nuclear scattering, where the initial condition is generalized from the proton case employing the optical Glauber model. The nonlinear large-mass resummation predicts a strong nuclear modification in diffractive scattering off a nuclear target in kinematics accessible at the future Electron-Ion collider.Comment: 9 pages, 3 figures; contribution to DIS2023: XXX International Workshop on Deep-Inelastic Scattering and Related Subjects, Michigan State University, USA, 27-31 March 2023 (talk by ADL

    Scattering from an external field in quantum chromodynamics at high energies: from foundations to interdisciplinary connections

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    We review the factorization of the SS-matrix elements in the context of particle scattering off an external field, which can serve as a model for the field of a large nucleus. The factorization takes the form of a convolution of light cone wave functions describing the physical incoming and outgoing states in terms of bare partons, and products of Wilson lines. The latter represent the interaction between the bare partons and the external field. Specializing to elastic scattering amplitudes of onia at very high energies, we introduce the color dipole model, which formulates the calculation of the modulus-squared of the wave functions in quantum chromodynamics with the help of a branching random walk, and the scattering amplitudes as observables on this classical stochastic process. Methods developed for general branching processes produce analytical formulas for the asymptotics of such observables, and thus enable one to derive exact large-rapidity expressions for onium-nucleus cross sections, from which electron-nucleus cross sections may be inferred.Comment: 97 pages, 24 figures. Lecture notes of the QCD Master Class, Saint-Jacut-de-la-Mer, September 202

    Probabilistic picture for particle number densities in stretched tips of the branching Brownian motion

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    In the framework of a stochastic picture for the one-dimensional branching Brownian motion, we compute the probability density of the number of particles near the rightmost one at a time TT, that we take very large, when this extreme particle is conditioned to arrive at a predefined position xTx_T chosen far ahead of its expected position mTm_T. We recover the previously-conjectured fact that the typical number density of particles a distance Δ\Delta to the left of the lead particle, when both Δ\Delta and xT−Δ−mTx_T-\Delta-m_T are large, is smaller than the mean number density by a factor proportional to e−ζΔ2/3e^{-\zeta\Delta^{2/3}}, where ζ\zeta is a constant that was so far undetermined. Our picture leads to an expression for the probability density of the particle number, from which a value for ζ\zeta may be inferred.Comment: 6 pages, 1 figur

    A Study on Derailment at Railway Turnout Using the Multi-body Dynamics Simulation

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    In this study, the locomotive and the turnout were simulated with three-dimensional models. The purpose of this study is prediction the derailment phenomenon of the locomotive running on the turnout in Vietnam. Multi-body simulations were implemented by SIMPACK software to determine the derailment coefficient, the wheel unloading factor, and the lateral force. The interaction between the locomotive and the track structure at turnout was considered unified. The derailment coefficient, the wheel unloading factor, and the lateral force were calculated for locomotive-D19E at turnout (tg0.15) for 1000 mm gauge according to QCVN 18:2011/BGTVT, EN 14363:2016, and TCVN 8784:2011. The derailment coefficient, the wheel unloading factor, and the lateral force for the locomotive at max speed V=27.8 km/h are 0.94, 0.61, and 67.46 kN, respectively. These results show that the locomotive will not derail when it passes the turnout at a speed V 27.8 km/h
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