13,579 research outputs found
A journey to be a bilingual teacher-researcher : conversation with Xinxin
No full textThis paper is based on an original conversation between the first author (hereafter referred to as Dr. Zhao) and the second author (hereafter referred to as Xinxin), which was later compiled and edited by Dr. Zhao. The conversation is about Xinxin's journey to be a bilingual teacher-researcher through the Research-Oriented School-Engaged Teacher Education (ROSETE) program, in which Dr Zhao works as a key designer with his colleague Professor Singh, together with their Ningbo and Western Sydney Counterparts
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
sj-pdf-1-tct-10.1177_15330338231219369 - Supplemental material for Comparison of Treatment Outcomes Between Thoracoscopic Surgery and Stereotactic Body Radiotherapy for Early-Stage Non-Small Cell Lung Cancer
No full textSupplemental material, sj-pdf-1-tct-10.1177_15330338231219369 for Comparison of Treatment Outcomes Between Thoracoscopic Surgery and Stereotactic Body Radiotherapy for Early-Stage Non-Small Cell Lung Cancer by Qin Tian, Xinxin Zhao, Cong Zhang, Nannan Tian and Hongchun Bian in Technology in Cancer Research & Treatment</p
Effect of transverse jet position on flame propagation regime
No full textWe studied the mechanisms of flame acceleration (FA) and deflagration to detonation transition (DDT) triggered by a combination of solid and jet obstacles. The Navier-Stokes equations with a detailed hydrogen-air kinetics model were utilized. Vast Kelvin-Helmholtz instabilities generate intensive turbulence-flame interactions, leading to an increase in surface area and high propagation velocity. The jet position has a significant effect on the FA and DDT. A choking flame and detonation flame are obtained by the transverse jet with different positions and mixing times even though in a lower blockage ratio.</p
Detonation simulations in supersonic flow under circumstances of injection and mixing
No full textThe unsteady, reactive Navier-Stokes equations with a detailed chemical mechanism of 11 species and 27 steps were employed to simulate the mixing, flame acceleration and deflagration to detonation transition (DDT) triggered by transverse jet obstacles. Results show that multiple transverse jet obstacles ejecting into the chamber can be used to activate DDT. But the occurrence of DDT is tremendously difficult in a supersonic non-uniform mixture so that it required several groups of transverse jets with increasing stagnation pressure. The jets introduce flow turbulence and produce oblique and bow shock waves even in an inhomogeneous supersonic mixture. The DDT is enhanced by multiple explosion points that are generated by the intense shock wave focusing of the leading flame front. It is found that the partial detonation front decouples into shock and flame, which is mainly caused by the fuel deficiency, nevertheless the decoupled shock wave is strong enough to reignite the mixture to detonation conditions. The resulting transverse wave leads to further mixing and burning of the downstream non-equilibrium chemical reaction, resulting in a high combustion temperature and intense flow instabilities. Additionally, the axial and transverse gradients of the supersonic non-uniform mixture induce a highly dynamic behavior with sudden propagation speed increase and detonation front instabilities
Supplementary Material - Longitudinal Relationship Between Frailty and Cognitive Impairment in Chinese Older Adults: A Prospective Study
No full textSupplemental Material for Longitudinal Relationship Between Frailty and Cognitive Impairment in Chinese Older Adults: A Prospective Study by Xinxin Zhao, Qi Chen, Liang Zheng, Longbing. Ren, Yinghong Zhai, Jue Li, and Jia He in Journal of Applied Gerontology</p
Flame-turbulence interactions during flame acceleration using solid and fluid obstacles
No full textA combination of solid and transverse jet obstacles is proposed to trigger flame acceleration and deflagration-to-detonation transition (DDT). A numerical study of this approach is performed by solving the reactive Navier-Stokes equations deploying an adaptive mesh refinement technique. A detailed hydrogen-air reaction mechanism with 12 species and 42 steps is employed. The efficiency and mechanisms of the combined obstacles on the flame acceleration are investigated comprehensively. The effects of multiple jets, jet start time, and jet stagnation pressure on the DDT process are studied. Results show that there is a 22.26% improvement in the DDT run-up time and a 33.36% reduction in the DDT run-up distance for the combined obstacles compared to that having only solid obstacles. The jet acts as an obstruction by producing a suitable blockage ratio and introducing an intense turbulent region due to the Kelvin-Helmholtz instability. This leads to dramatic flame-turbulence interactions, increasing the flame surface area dramatically. The dual jet produces mushroom-like vortices, leading to a significantly stretched flame front and intensive Kelvin-Helmholtz instabilities, and therefore, these features produce a high flame acceleration. As the jet operation time decreases, the jet obstacle almost changes its role from both physical blockage ratio and turbulence and vorticity generator to a physical blockage ratio. There is a moderate jet stagnation pressure that reduces the run-up time to detonation and run-up distance to detonation in the obstacle-laden chamber. While further increasing the jet stagnation pressure, it does not have a positive effect on shortening the detonation transition.</p
A second-order-accurate immersed boundary ghost-cell method with hybrid reconstruction for compressible flow simulations
No full textThis study presents an improved ghost-cell immersed boundary method for geometrically complex boundaries in compressible flow simulations. A bilinearly complete extrapolation scheme is developed for the reconstruction of the ghost cell. The second-order accuracy of the improved ghost-cell method (GCM) is shown in unit test cases and is also theoretically proven. A hybrid GCM based on both baseline GCM and improved GCM is proposed and constructed. The hybrid GCM applied in compressible flow is validated against five test cases: (a) Stationary rotating vortex, (b) Prandtl-Meyer expansion flow, (c) Double Mach reflection, \textcolor[rgb]{0,0,1}{(d) Moving-shock/obstacle interaction}, (e) Blunt body shock-induced combustion. This paper provides a comprehensive comparison of their performance in terms of various accuracy and computation time measurements. The simulation results demonstrate that the hybrid GCM has higher accuracy and convergence than the remaining two GCMs in all cases. By directly comparing the primitive variables along the boundary, it can be concluded that the hybrid GCM has significant advantages in compressible flow simulations. The results of CPU time show that the hybrid GCM can provide more accurate results while ensuring the efficiency of the calculation.<br/
Supplemental Material - Supplemental Material for Pretreatment Serum Lactate Dehydrogenase and Metastases Numbers as Potential Determinants of Anti-PD-1 Therapy Outcome in Nasopharyngeal Carcinoma
No full textSupplemental Material for Pretreatment Serum Lactate Dehydrogenase and Metastases Numbers as Potential Determinants of Anti-PD-1 Therapy Outcome in Nasopharyngeal Carcinoma by Wael Abdullah Sultan Ali, Xinxin Huang, Yuehan Wu, Yuxiang Ma, Hui Pan, Jun Liao, Zhang Yang, Shaodong Hong, Yunpeng Yang, Yan Huang, Yuanyuan Zhao, Wenfeng Fang, Hongyun Zhao, and Li Zhang in Cancer Control.</p
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