6,151 research outputs found
Contraction: a Unified Perspective of Correlation Decay and Zero-Freeness of 2-Spin Systems
Full text linkWe study complex zeros of the partition function of 2-spin systems, viewed as
a multivariate polynomial in terms of the edge interaction parameters and the
uniform external field. We obtain new zero-free regions in which all these
parameters are complex-valued. Crucially based on the zero-freeness, we show
the existence of correlation decay in these regions. As a consequence, we
obtain an FPTAS for computing the partition function of 2-spin systems on
graphs of bounded degree for these parameter settings. We introduce the
contraction property as a unified sufficient condition to devise FPTAS via
either Weitz's algorithm or Barvinok's algorithm. Our main technical
contribution is a very simple but general approach to extend any real parameter
of which the 2-spin system exhibits correlation decay to its complex
neighborhood where the partition function is zero-free and correlation decay
still exists. This result formally establishes the inherent connection between
two distinct notions of phase transition for 2-spin systems: the existence of
correlation decay and the zero-freeness of the partition function via a unified
perspective, contraction.Comment: 21 pages, 3 figures. Update: two correlation decay sets were added; a
discussion with an independent work by Liu with similar results was give
Figure 3 from: Lu Z, Sun Y (2019) Rhamnella brachycarpa (Rhamnaceae), a new species from Hainan Island, China. PhytoKeys 132: 19-29. https://doi.org/10.3897/phytokeys.132.36776
No full textFigure 3 Rhamnella brachycarpa Z. Qiang Lu & Y. Shuai Sun, sp. nov., drawn from the tree of Z.Q. Lu 2018HN3001
IMR903608 Supplemental Material - Supplemental material for The phenomenon of concealed conduction in a case of His bundle pacing (HBP)
No full textSupplemental material, IMR903608 Supplemental Material for The phenomenon of concealed conduction in a case of His bundle pacing (HBP) by Shuai Sun, Hong Zhang and Xing-Peng Liu in Journal of International Medical Research</p
Characterization of entomopathogenic fungi from invasive fall armyworm in China and their risk to native pest.
No full textThe concentration of fungus in all fungal treatments is 2×108 spores/ml. The mortality caused by the same fungus isolate was compared by one-way analysis of variance (ANOVA) followed by post hoc Tukey tests with insect species as the factor, the data were checked for normality by Shapiro-Wilk tests before analysis. The data represent the mean of five replicates with standard error. Data with different letters indicate significant differences among different insect species with the same fungal treatment
sj-pdf-3-gsj-10.1177_21925682211041048 – Supplemental Material for Spine-Related Malpractice Claims in China: A 2-year National Analysis
No full textSupplemental Material, sj-pdf-3-gsj-10.1177_21925682211041048 for Spine-Related Malpractice Claims in China: A 2-year National Analysis by Lei Yue, Ming-Shuai Sun, Guan-Zhang Mu, Mei-Xia Shang, Ying-Ze Zhang, Hao-Lin Sun and Chun-De Li in Global Spine Journal</p
sj-pdf-2-gsj-10.1177_21925682211041048 – Supplemental Material for Spine-Related Malpractice Claims in China: A 2-year National Analysis
No full textSupplemental Material, sj-pdf-2-gsj-10.1177_21925682211041048 for Spine-Related Malpractice Claims in China: A 2-year National Analysis by Lei Yue, Ming-Shuai Sun, Guan-Zhang Mu, Mei-Xia Shang, Ying-Ze Zhang, Hao-Lin Sun and Chun-De Li in Global Spine Journal</p
sj-pdf-1-gsj-10.1177_21925682211041048 – Supplemental Material for Spine-Related Malpractice Claims in China: A 2-year National Analysis
No full textSupplemental Material, sj-pdf-1-gsj-10.1177_21925682211041048 for Spine-Related Malpractice Claims in China: A 2-year National Analysis by Lei Yue, Ming-Shuai Sun, Guan-Zhang Mu, Mei-Xia Shang, Ying-Ze Zhang, Hao-Lin Sun and Chun-De Li in Global Spine Journal</p
A simple configuration for fabrication of 2D and 3D photonic quasicrystals with complex structures
No full textA simple method using a single-prism common-path interferometer is presented for the fabrication of complex quasicrystals in sub-micrometer scales. Multiple types of two-dimensional (2D) and three-dimensional (3D) quasicrystalline structures are designed and their diffraction patterns are obtained by using Fourier Transform method. Multi-fold rotational symmetries are demonstrated and compared. By using this method, a wide range of quasicrystals types can be produced with arbitrary complexities and rotational symmetries. The transmittance studies of 12-fold and 18-fold structures also reveal the existence of complete photonic bandgaps, which also demonstrates increased symmetry and significantly improved characteristics of photonic band-gaps
Ran liao min hua tai yang neng dian chi de guang pu xiang ying zeng qiang
No full textChang, Shuai = 染料敏化太陽能電池的光譜響應增強 / 常帥.Thesis Ph.D. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 125-130).Abstracts also in Chinese.Title from PDF title page (viewed on 02, November, 2016).Chang, Shuai = Ran liao min hua tai yang neng dian chi de guang pu xiang ying zeng qiang / Chang Shuai
Energy-Efficient Train Operation: Conclusions and Future Work
No full textThis chapter gives the basic conclusions about energy-efficient train operation covering energy-efficient train driving, energy-efficient train timetabling, regenerative braking, energy storage systems and power supply networks. Future work that will develop energy-efficient train operation further include the interaction of connected driver advisory systems (C-DAS) and automatic train operation (ATO) with railway traffic management systems, cooperative train control in platoons of virtually coupled trains, digital twin technology and particularly its application to power supply systems, and the interaction between the railway network with the electrical power grid and renewable energy generation.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Transport and Plannin
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