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- 저자 : Xi Fu (검색결과 46 건)
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BERGMAN SPACES, BLOCH SPACES AND INTEGRAL MEANS OF p-HARMONIC FUNCTIONS
Fu, Xi,Qiao, Jinjing Korean Mathematical Society 2021 대한수학회보 Vol.58 No.2
In this paper, we investigate the properties of Bergman spaces, Bloch spaces and integral means of p-harmonic functions on the unit ball in ℝn. Firstly, we offer some Lipschitz-type and double integral characterizations for Bergman space ��kγ. Secondly, we characterize Bloch space ��αω in terms of weighted Lipschitz conditions and BMO functions. Finally, a Hardy-Littlewood type theorem for integral means of p-harmonic functions is established.
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Mesenchymal Stem Cells on a Decellularized Cartilage Matrix for Cartilage Tissue Engineering
Xi-Fu Zheng,Shi-Bi Lu,Wei-Guo Zhang,Shu-Yun Liu,Jing-Xiang Huang,Quan-Yi Guo 한국생물공학회 2011 Biotechnology and Bioprocess Engineering Vol.16 No.3
An ideal scaffold for cartilage tissue engineering should be biomimetic in not only its biochemical composition, but also in the morphological structure of the scaffold. In this study, we fabricated a scaffold with an oriented structure using a nanofibrous articular cartilage extracellular matrix (ACECM), in which the ACECM was used to mimic the biochemical composition and oriented structure of articular cartilage. Histology analysis showed that the scaffold contained cartilage ECM (GAGs and collagen II). Scanning electron microscopy (SEM) indicated that the scaffolds were composed of nanofibers and possessed vertical microtubules. Chondrogenic differentiation-induced mesenchymal stem cells (MSCs) were seeded on the scaffold in vitro. SEM showed that MSCs proliferated well and aligned along the vertical microtubules,which mimicked the orientation of deep zone articular cartilage. A cell proliferation assay and live/dead cell staining demonstrated that the ACECM possessed good cell affinity, which favored cell adherence and proliferation. The MSCs that had been labeled with the fluorescent dye PKH26 and seeded on scaffolds were implanted into nude mice. The differentiated cells/ACECM implants formed cartilage-like tissue 4 weeks after implantation, and stained positive for collagen type II and toluidine blue. In addition,the in vivo fluorescent images verified that the MSCs in the implants were the labeled MSCs. These results demonstrated that the oriented ACECM scaffolds hold great promise for use in cartilage tissue engineering applications.
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BLOCH-TYPE SPACES ON THE UPPER HALF-PLANE
Fu, Xi,Zhang, Junding Korean Mathematical Society 2017 대한수학회보 Vol.54 No.4
We define Bloch-type spaces of ${\mathcal{C}}^1({\mathbb{H}})$ on the upper half plane H and characterize them in terms of weighted Lipschitz functions. We also discuss the boundedness of a composition operator ${\mathcal{C}}_{\phi}$ acting between two Bloch spaces. These obtained results generalize the corresponding known ones to the setting of upper half plane.
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On discreteness of Mobius groups
Xi Fu 대한수학회 2013 대한수학회보 Vol.50 No.3
It’s known that one could use a fixed loxodromic or parabolic element in M(Rn) as a test map to test the discreteness of a nonelementary M¨obius group G. In this paper, we discuss the discreteness of G by using a fixed elliptic element.
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Bloch-type spaces on the upper half-plane
Xi Fu,Junding Zhang 대한수학회 2017 대한수학회보 Vol.54 No.4
We define Bloch-type spaces of $\mathcal{C}^1(\IH)$ on the upper half plane $\mathbb{H}$ and characterize them in terms of weighted Lipschitz functions. We also discuss the boundedness of a composition operator $C_\phi$ acting between two Bloch spaces. These obtained results generalize the corresponding known ones to the setting of upper half plane.
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ON THE CONJUGACY OF MÖBIUS GROUPS IN INFINITE DIMENSION
Fu, Xi,Lu, Bowen Korean Mathematical Society 2016 대한수학회논문집 Vol.31 No.1
In this paper, we establish some conjugacy criteria of $M\ddot{o}bius$ groups in infinite dimension by using Clifford matrices. This extends the corresponding known results in finite dimensional setting.
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ON DISCRETENESS OF MÖBIUS GROUPS
Fu, Xi Korean Mathematical Society 2013 대한수학회보 Vol.50 No.3
It's known that one could use a fixed loxodromic or parabolic element in $M(\bar{\mathbb{R}}^n)$ as a test map to test the discreteness of a non-elementary M$\ddot{o}$bius group G. In this paper, we discuss the discreteness of G by using a fixed elliptic element.
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付希亮(Fu, Xi–liang),최창원 중국학연구회 2014 중국학연구 Vol.- No.68
Archaeology of Neolithic era proved that Chinese civilization originated diversely and developed independently. Archaeologist Su Bingqi divided Neolithic culture into six parts: Yangshao, Hongshan, Liangzhu, Dawenkou, Majiayao and Qujialing cultural districts. By the Longshan culture period, social development of each cultural district had reached to a very high level. Global cooling and flood, drought triggered by it in 4200-4000 ago brought enormous disaster to five cultural districts except for Yangshao. The tribes in these five districts started to migrate to the middle reaches of the Yellow river. Finally, a huge tribal alliance-the five emperors’ league was established through mutual compromise. Then Chinese civilization changed form “starring night” to “the YellowRivercivilization”stage. 4200—4000前的全球降温及其引发的洪水、旱灾给 仰韶之外的五大文化区带来了巨大灾难,这些地区居住的部落向黄河中游地区迁徙。这些部落与 居住在黄河中游原住部落之间爆发了冲突,最终通过相互妥协得到了解决,建立了一个庞大的部落联盟,这就是五帝联盟。中国文明 由此由“漫天星斗”转为“黄河文明”阶段。
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부희량 ( Xi Liang Fu ),최창원 ( Chang Won Choi ) 한국외국어대학교 중국연구소 2014 中國硏究 Vol.61 No.-
The surname Ji is the family name of both the rulers of Zhou Dynasty in Chinese history and the ancestor of Huaxia - the Yellow Emperor. Inspecting the tribal totems of Zhou Tribes with the surname Ji is of great importance to get to know the origin of Zhou Tribes, the early Zhou history and Huaxia formation history. With respect to the tribal totems of Zhou Tribes with the surname Ji, predecessors put forward quite many views that include bears, turtles, millet and earthworms etc., which are sort of reasonable but contain huge one-sidedness. Starting from the auspicious sign during Emperor Wu of Zhou Dynasty’s crusade that is claimed by Zhou Dynasty, this paper ascertains that the tribal totem of Zhou Tribes with the surname Ji is a kind of red bird - Chiwu, also known as Yuezhuo. Judged from the document like <The Book of songs·Epics·The Birth of People>, the tribal totem which has marriage link with Zhou Tribes with the surname Ji are cattle, sheep, snakes and fishes etc. Bears, turtles, millet and earthworms which are put forward by predecessors are just marriage totems of Zhou Tribes with the surname Ji or related cultural characteristics, but not the totems of Zhou Dynasty people.
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A Comparison between Traditional and Modern Ethics from the Perspective of Social Philosophy
( Xin Qi Jia ) , ( Wan Fu Xi ) 한국윤리학회 2014 倫理硏究 Vol.95 No.1
Social philosophy is the study of people`s conception of basic social objectives. It can be divided into two categories based on two different basic objectives: harmony and strength. Harmony-oriented social philosophy and strength-oriented social philosophy are dominant in traditional society and modern society respectively. From the perspective of social philosophy, we can understand better the differences between traditional ethics and modern ethics.
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