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593 results on '"Zhang, Jiarong"'

1. All Five-point Kaluza-Klein Correlators and Hidden 8d Symmetry in $\rm AdS_5\times S^3$

Author

Huang, Zhongjie, Wang, Bo, Yuan, Ellis Ye, and Zhang, Jiarong

Subjects
High Energy Physics - Theory
Abstract

We systematically compute five-point correlators of chiral primary operators with arbitrary Kaluza-Klein charges at tree-level in $\mathrm{AdS}_5\times\mathrm{S}^3$, and obtain a unified formula. This result serves as the first concrete confirmation for the existence of the hidden eight-dimensional symmetries at the level of five points., Comment: 5 pages, 2 figures and 3 appendices + ancillary files for the results

Published
2024

13. 'Hierarchy of protection' and 'hierarchy of culture' : the effects of copyright law on traditional music

Author

Zhang, Jiarong

Subjects
K Law (General), M Music
Abstract

This dissertation examines the effects of copyright law on traditional music of the marginalised communities. Traditional music of the marginalised communities has been exploited by music collectors from the dominant group, historically and contemporarily. The exploitation is often justified and legalised by the proposition that traditional music is unprotectable under copyright law, which can be described as a 'hierarchy of protection.' Further, traditional music of the marginalised communities is often perceived as inferior to classical or art music of the dominant groups, which can be described as a 'hierarchy of culture.' This dissertation aims to examine the role of copyright law in the exploitation of traditional music and in shaping the cultural perception or cultural status of traditional music. This is accomplished through a cross analysis of publishing processes and legal treatments of traditional music. Four sub-questions are examined to answer the main research question: 1) whether traditional music can be protected as musical works under three copyright requirements, originality, authorship, and fixation; 2) whether these copyright requirements are socio-cultural neutral or informed by broader industrial and cultural contexts, thus embedding cultural biases towards traditional music; 3) how traditional music was processed in music publishing and what were the relative legal consequences of these processes; 4) whether and how the compound of music publishing and copyright law influences the cultural perception of traditional music. This cross analysis facilitates the dissertation's original contributions, including challenging the view that traditional music is unprotectable under copyright law. Theoretical patterns emerge from analysing the dynamic interaction between the 'hierarchy of protection' and the 'hierarchy of culture.' That is, copyright law has implemented the 'hierarchy of protection' in the legal field, thus constructing and reinforcing the 'hierarchy of culture' in the music field. The contributions underpin the implications of the dissertation: redressing the 'hierarchy' effect is essential for properly protecting traditional music against exploitation, and in the broader sense, for promoting socio-cultural equality between the dominant group and the marginalised communities.

Published
2022
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19. Improved Design of Multimedia Podium Under the New Teaching Method

Author

Zhang, Jiarong, Chen, Zihang, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Long, Shengzhao, editor, and Dhillon, Balbir S., editor

Published
2023
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36. Experimental Study on Characteristics of Liquid Film of Annular Flow in Helically Coiled Tube Using Ring-island Array Sensor

Author

LIU Li;LIU Shuai;ZHANG Jiarong;LIU Maolong;CHEN Shuo;XIAO Yao;LIU Limin;GU Hanyang

Subjects
helically coiled tube, annular flow, liquid film distribution, ring-island array sensor, Nuclear engineering. Atomic power, TK9001-9401, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Helically coiled tube (HCT) is widely used in nuclear engineering and other fields due to its effective compactness, excellent structure robustness, heat transfer efficiency and flow stability. As one of the most important gasliquid twophase flow patterns in HCT, the characteristic of annular flow has a great influence on the heat transfer performance of helical oncethrough steam generator. Especially, the circumferential distribution of liquid film thickness in annular flow directly determines the dryout onset location. Although the liquid film flow in straight tubes has been extensively studied, due to the limitation of measurement technology, the precise measurement data of liquid film thickness in HCT are still very rare. In this paper, based on the selfdeveloped noninvasive contact ringisland array sensor (RIAS), airwater twophase flow experiments were carried out to study the threedimensional spatialtemporal distribution of liquid film thickness in vertical HCT with different structures. According to the results, four typical liquid film flow regimes were defined based on the circumferential position of the thicker liquid film appearing in the tube wall. That is, the bottom distribution (BD) dominated by gravity force, the outside distribution (OD) dominated by liquid centrifugal force, the inside distribution (ID) dominated by gas centrifugal force and the insideoutside distribution (IOD) dominated by secondary flow. The effects of coil diameter and coil pitch of HCT as well as gas and liquid velocities on the distribution of liquid film flow regimes were detailed analyzed. It is implied that the coil diameter determines the intensity of centrifugal force and secondary flow. Generally, the smaller the coil diameter, the easier the circumferential distribution forms of OD, ID and IOD are to appear. Also, increasing the coil pitch weakens the effect of centrifugal force on the liquid film. Then a small coil pitch normally results in the circumferential distribution form of OD while it is ID for large coil pitch. It is also found that the IOD occurs only when both gas and liquid velocities are large enough. By taking the influence of HCT geometry and fluid parameters into account, a general submap of liquid film flow in HCT was proposed using the modified Dean number De* and the modified LockhartMartinelli parameter X*. The transition criteria between different liquid film flow regimes were also established and verified with experimental data in present work and previous references. From this work, the mechanism of curvatureinduced centrifugal force and secondary flow on the spatiotemporal evolution of liquid film in HCT is revealed.

Published
2022
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