3,681 research outputs found
Futaki Invariant and CM Polarization
No full textThis is an expository paper. We will discuss various formulations of Futaki invariant and its relation to the CM line bundle. We will discuss their connections to the K-energy. We will also include proof for certain known results which may not have been well presented or less accessible in the literature. We always assume that M is a compact Kahler manifold. By a polarization, we mean a positive line bundle L over M, then we call (M, L) a polarized manifold.EICPCI-S(ISTP)[email protected]
Artimpaza brevilineata Tian & Chen, 2012 in Tian, Chen & Li 2012
No full textArtimpaza brevilineata Tian & Chen, 2012 in Tian, Chen & Li, 2012: 43, figs. 1–9. (Figs. 28a, b) Type locality: China, Yunnan, Pu’er City, Yutang. Gender: female. Date collected: 2011.V.25 (2010.V.25, in the original description, is incorrect). Collector: Li-Chao TIAN & Gui-Qiang HUANG. Paratypes: 1 female, China, Yunnan, Lincang City, 1980.VI.1, Fen LIU leg. Remarks: In the original description, the type locality is “ Yunnan, Jinghong” while it is “ Yunnan, Yutang” according to the label. “Yutang” is actually in Pu’er, not Jinghong. The first author described the type locality by mistake. In the original description, the collector was only listed as Li-Chao TIAN, which was a mistake.Published as part of Li, Zhu & Chen, Li, 2020, Primary types of longhorned beetles (Coleoptera, Cerambycidae, Vesperidae and Disteniidae) of Southwest University (SWU), pp. 25-46 in Zootaxa 4718 (1) on page 33, DOI: 10.11646/zootaxa.4718.1.2, http://zenodo.org/record/360220
Tun hu: (du mu ju ji).
No full text復工之前 -- 母女們 -- 囤戶.吳天著.Drama.Wu Tian zhu.Fu gong zhi qian -- Mu nü men -- Tun hu
Brain Dynamic Information Flow Estimation Based on EEG and Diffusion MRI: A Proof-of-principle Study and Application in Stroke
No full textIn the hemiparetic stroke, functional recovery of paretic limb may occur with the reorganization of neural networks in the brain. Electroencephalography (EEG), with an excellent temporal resolution, can be used to reveal functional changes in the brain following a stroke. This study assessed a novel multimodal brain imaging technique namely Variational Bayesian Multimodal Encephalography (VBMEG), which combines EEG, anatomical MRI and diffusion weighted imaging (DWI), to estimation brain dynamic information flow and its changes following a stroke. EEG data were acquired from individuals suffering from a stroke as well as able-bodied participants while electrical stimuli were delivered sequentially at their index finger in the left and right hand, respectively. The locations of active sources related to this stimulus were precisely identified, resulting in high Variance Accounted For (VAF above 80%). An accurate estimation of dynamic information flow between sources was achieved in this study, showing a high VAF (above 88%) in the cross-validation test. The estimated dynamic information flow was compared between chronic hemiparetic stroke and able-bodied individuals, using matrices lateralization index and activation complexity. The results demonstrate the feasibility of VBMEG method in revealing the changes of information flow in the brain after stroke. This study verified the VBMEG method as an advanced computational approach to track the dynamic information flow in the brain following a stroke. This may lead to the development of a quantitative tool for monitoring functional changes of the cortical neural networks after a unilateral brain injury and therefore facilitate the research into, and the practice of stroke rehabilitation.Mechanical Engineerin
Sukatshevabaga Tian & Zhang, 2023, nom. nov.
No full textGenus <i>Sukatshevabaga</i> nom. nov. <p> <i>Baga</i> Sukatsheva 1992: 112 (Trichoptera: Philopotamidae). Preoccupied by <i>Baga</i> Navás 1930: 37 (Neuroptera: Myrmeleontidae).</p> <p> <b>Type species:</b> <i>Baga bakharica</i> Sukatsheva 1992</p> <p> <b>Etymology.</b> The replacement name for the genus is derived from the name Sukatsheva, the author of the genus <i>Baga</i>. Gender: feminine.</p> <p> <b>Distribution.</b> Mongolia.</p>Published as part of <i>Tian, Yu & Zhang, Yi, 2023, New replacement name for the genus Baga Sukatsheva 1992 (Trichoptera: Philopotamidae), pp. 199-200 in Zootaxa 5284 (1)</i> on page 199, DOI: 10.11646/zootaxa.5284.1.11, <a href="http://zenodo.org/record/7918888">http://zenodo.org/record/7918888</a>
The skein algebra of arcs and links and the decorated Teichmüller space
No full textThis dissertation is based on a joint work with Dr. Julien Roger. We define an associative --algebra generated by framed arcs and links over a punctured surface which is a quantization of the Poisson algebra of arcs and curves on . We also construct a Poisson algebra homomorphism from to the space of smooth functions on the decorated Teichmuller space endowed with the Weil-Petersson Poisson structure. The construction relies on a collection of geodesic lengths identities in hyperbolic geometry which generalizes Penner's Ptolemy relation, the trace identity and Wolpert's cosine formula.Ph. D.Includes bibliographical referencesIncludes vitaby Tian Yan
Antiferromagnetic correlation in the half-filled strongly correlated electron models at nonzero temperature: A rigorous result
No full textAs an extension of our previous rigorous investigation on the spin correlations in the ground states of the half-filled Hubbard model and the periodic Anderson model [G. S. Tian, Phys. Rev. B 50, 6246 (1994)], in the present paper we study the behavior of these correlation functions at finite temperature. We show rigorously that, at any T not equal0, the predominant spin correlations in these systems are antiferromagnetic. Furthermore, based on this result, we also show that a quasi-one (or two)-dimensional itinerant electron ferrimagnet must have a gapless branch of ferromagnetic excitations. This conclusion is consistent with the previous results derived by the spin-wave theory.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000169283000058&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, Condensed MatterSCI(E)10ARTICLE22null6
Tian invariant on generalized Calabi manifold
No full textIn this article we calculate the Tian invariant on some Fano manifolds. These manifolds generalize those introduced by the first author in collaboration with Pascal Cherrier, in Ben Abdesselem and Cherrier (2009 [1]). The method used is to determine explicitly the lower bound for almost psh functions
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
Blockprinted Editions of Liu Zhi's Tian-Fang Dian-Li and Tian-Fang Zhi-Sheng Shi-Lu
No full textThe purpose of this paper is to put into some kind of logical order blockprinted editions of the early Qing period scholar Liu Zhi 劉智’s Tian-Fang Dian-Li 天方典禮 and Tian-Fang Zhi-Sheng Shi-Lu 天方至聖實錄 that were transmitted to Japan and examine the conditions under which the Islamic works written by Muslims of the late Ming / early Qing period were circulated and handed down.The oldest extant edition of Tian-Fang Dian-Li was published by Yang Fei-lu 楊斐菉 in 康煕 49 (1710) and that of Tian-Fang Zhi-Sheng Shi-Lu was published in Cheng-du 成都 by Huan-chun-tang 還淳堂 in 道光 7 (1827).There are three different extant editions of Tian-Fang Dian-Li: the Tong Guo-xuan, Dian-nan 滇南 and Jiang-zhang-tang 絳帳堂 editions. There was also a Huan-chun-tang edition, as seen in a preface by Huan-chun-tang’s Ma Da-en 馬大恩 appearing in the Dian-nan and the Bao-zhen-tang 寶眞堂 Huang-chun-tang edition.There are two different editions of Tian-Fang Zhi-Sheng Shi-Lu: The Huan-chun-tang and Zhen-jiang Mosque editions. The list of Islamic literature contained in the Tong-zhi 同治 13 / Guang-xu 光緒 1 (1874) printings of the latter is important for knowing about publication of that genre during the late Ming / early Qing period.After many Islamic works written by Muslims at that time were published by Ma Da-en in Cheng-du during the Dao-guang 道光 era (1830s and 40s), similar publication continued during the Tong-zhi era (1860s) in Yunnan 雲南, and then by Yuhaiting 余海亭 in Cheng-du. Therefore, in southeast China, the publication of Islamic books followed a route from Cheng-du to Yunnan, then back to Cheng-du, with Ma Da-en playing the pioneering role.In addition, Islamic works preserved in Zhen-jiang and Guang-dong 広東 became very valuable after the loss of many books due to the Muslim risings of the Tong-zhi era.Finally, the author points out that there is no evidence that the works of Liu-Zhi were published or printed by either the Shan-xi 陝西 or Shan-dong 山東 Schools.journal articl
- …
