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Search Results: 1 - 10 of 24059 matches for " Jiang Yuxi "
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Early Warning System of Risk in Dairy Cows with Inactive Ovaries  [PDF]
Chang Zhao, Shi Shu, Jiang Zhang, Yunlong Bai, Shuhan Sun, Yuxi Song, Cheng Xia
Journal of Biosciences and Medicines (JBM) , 2018, DOI: 10.4236/jbm.2018.611008
Abstract:
The incidence of Inactive ovaries of dairy cows in China is relatively high. There is no complete early warning system for the occurrence of ovarian quiescence in clinical cows. This test provides early warning indicators for clinical prediction of ovary cessation in dairy cows. This experiment selected blood samples of dairy cows from 60 to 90 days postpartum in the inactive ovaries group and control group. Differential proteins were selected on the basis of proteomics, three energy indexes: AST, Glu, NEFA. Four reproductive hormones: E2, P4, FSH, LH, and four differentially expressed proteins: IGFBP-2, AHSG, APO-A4, and RBP-4. Key enzyme activities: ALDOB, LDHB, ITIH3, GPX3, SPAM1, PKM2. The ELISA test kit was used to detect the content and activity of the above markers in the test bovine serum. Through correlation analysis, binary logistic regression modeling and ROC analysis, a single indicator early warning technique for APOA4 and ITIH3 was established. The early warning values were APOA4 > 28.825 μg/L and ITIH3 > 195.07 ng/L. A multi-index early warning system based on potential biomarkers of APOA4 + ITIH3 and APOA4 + ITIH3 + E2 was established. The former had an early warning value of: APOA4 > 19.55 μg/I; ITIH3 > 191.14 ng/L; the latter has an early warning value: APOA4 > 47.56 μg/L, ITIH4 > 187.80 ng/L, E2 < 69.63 ng/L.
Evaluation and Prediction of Urban Entrepreneurship Environment in China: A Case of Guangzhou City  [PDF]
Yuxi Kuang, Yan Bu
Journal of Service Science and Management (JSSM) , 2018, DOI: 10.4236/jssm.2018.114029
Abstract: Studying the urban entrepreneurship environment has guiding significance for the development of urban economy and employment. Based on the PSR (Pressure-State-Response) model framework, this paper constructs an index system for evaluation of urban entrepreneurship environment, and uses the multi-factor weighted method to systematically quantitatively analyze and comprehensively evaluate the state of entrepreneurship policies, service systems, and hardware facilities, and use GM(1, 1) model to predict the development trend of urban entrepreneurship environment in Guangzhou. The study shows that the policy measures to optimize the entrepreneurship environment have effectiveness, time lag and accumulation effect, and the government’s response measures are the core factors for the stable development of the urban entrepreneurship environment. It is expected that the entrepreneurship environment in Guangzhou will continue to improve in the future. Finally, it is pointed out that optimizing the urban entrepreneurship environment should start from innovation, attracting talents, increasing financial support, and highlighting regional industrial characteristics to form an entrepreneurship economy.
Symmetric π-calculus
Symmetric π-Calculus

Fu Yuxi,
Fu
,Yuxi

计算机科学技术学报 , 1998,
Abstract: An alternative presentation of the π-calculus is given. This version of the π-calculus is symmetric in the sense that communications are symmetric and there is no difference between input and output prefixes. The point of the symmetric π-calculus is that it has no abstract names. The set of closed names is therefore homogeneous. The π-calculus can be fully embedded into the symmetric π-calculus. The symmetry changes the emphasis of the communication mechanism of the π-calculus and opens up possibility for further variations. Supported by NNSFC, grant number 69503006. Fu Yuxi is an Associate Professor in the Department of Computer Science, Shanghai Jiao Tong University. He received his Ph.D. degree in computer science in 1992 from Manchester University, England. His current research interests include type theory, semantics and concurrency theory.
Structures definable in polymorphism
Structures Definable in Polymorphism

Fu Yuxi,
Fu
,Yuxi

计算机科学技术学报 , 1998,
Abstract: Encodings in polymorphism with finite product types are considered. These encodings aregiven in terms of I-algebras. They have the property that the ground terms are precisely theclosed normal terms of the encoded types. The proof of a well-known result is transplantedto the setting and it is shown why weak recursion is admissible. The paper also shows how tocarry out the dual encodingS using the existential quantifier.
Reaction graph
Reaction Graph

Fu Yuxi,
Fu
,Yuxi

计算机科学技术学报 , 1998,
Abstract: The paper proposes reaction graphs as graphical representations of computational objects.A reaction graph is a directed graph with all its arrows and some of its nodes labeled. Compu-tations are modeled by graph rewriting of a simple nature. The basic rewriting rules embodythe essence of both the communications among processes and cut-eliminations in proofs. Cal-culi of graphs are identified to give a formal and algebraic account of reaction graphs in thespirit of process algebra. With the help of the calculi, it is demonstrated that reaction graphscapture many interesting aspects of computations.
Lateral Oxidation in Vertical Cavity Surface Emitting Lasers
Liu Wenli,Hao Yongqin,Wang Yuxi,Jiang Xiaoguang,Feng Yuan,Li Haijun,Zhong Jingchang,
Liu Wenli
,Hao Yongqin,Wang Yuxi,Jiang Xiaoguang,Feng Yuan,Li Haijun,Zhong Jingchang

半导体学报 , 2006,
Abstract: 研究了垂直腔面发射激光器(VCSEL)的侧向氧化工艺及其特性.发现对于条形台面,氧化物生长遵循线性生长规律.但对于在VCSEL中采用的两种结构,氧化物的生长(温度高于435℃)表现为非线性生长行为.理论分析表明,台面结构的几何形状对高温下的氧化速率产生了影响.
Hydrothermal fabrication and visible-light-driven photocatalytic properties of bismuth vanadate with multiple morphologies and/or porous structures for Methyl Orange degradation
Haiyan Jiang,Hongxing Dai,Xue Meng,Lei Zhang,Jiguang Deng,Yuxi Liu,Chak Tong Au,
Haiyan Jiang
,Hongxing Dai,Xue Meng,Lei Zhang,Jiguang Deng,Yuxi Liu,Chak Tong Au

环境科学学报(英文版) , 2012,
Abstract: Monoclinic BiVO4 with multiple morphologies and/or porous structures were fabricated using the hydrothermal strategy. The materials were characterized by means of the XRD, Raman, TGA/DSC, SEM, XPS, and UV-Vis techniques. The photocatalytic activities of the BiVO4 materials were evaluated for the degradation of Methyl Orange under visible-light irradiation. It is observed that pH value and surfactant exerted a great effect on the morphology and pore structure of the BiVO4 product. Spherical BiVO4 with porous structures, flower-cluster-like BiVO4, and flower-bundle-like BiVO4 were generated hydrothermally at 100 degrees C with poly(vinyl pyrrolidone) (PVP) and urea (pH = 2) and at 160 degrees C with NaHCO3 (pH = 7 and 8), respectively. The PVP-derived BiVO4 showed much higher surface areas (5.0-8.4 m2/g) and narrower bandgap energies (2.45-2.49 eV). The best photocatalytic performance of the spherical BiVO4 material with a surface area of 8.4 m2/g was associated with its higher surface area, narrower bandgap energy, higher surface oxygen vacancy density, and unique porous architecture.
Analysis of Facility Systems’ Reliability Subject to Edge Failures: Based on the p-Median Problem  [PDF]
Zongtian Wei, Huayong Xiao, Yuxi Quan
American Journal of Operations Research (AJOR) , 2011, DOI: 10.4236/ajor.2011.14032
Abstract: We view a facility system as a kind of supply chain and model it as a connected graph in which the nodes represent suppliers, distribution centers or customers and the edges represent the paths of goods or information. The efficiency, and hence the reliability, of a facility system is to a large degree adversely affected by the edge failures in the network. In this paper, we consider facility systems' reliability analysis based on the classical p-median problem when subject to edge failures. We formulate two models based on deterministic case and stochastic case to measure the loss in efficiency due to edge failures and give computational results and reliability envelopes for a specific example.
Application and research of enterprise level Information Integration resolvent base on Oracle10g
基于Oracle10g的企业级信息集成解决方案的应用研究

Wang YuXi,Ceng Bin,Ceng Kai,Jiang XiaoLi,
王宇熙
,曾斌,曾凯,姜小丽

计算机系统应用 , 2005,
Abstract: 本文介绍了基于Oracle10g的企业级信息集成解决方案。通过Oracle10g提供的功能强大的完整网格计算 解决方案,使得当企业的业务优先级发生变化时,企业能够在一个分布式环境中随时随地根据需要访问信息,根 据企业自身需要高效调整它们的资源,以适应不断变化的业务需求。
Capacity Planning in Electronic commerce system
电子商务系统的容量规划

Wang YuXi,Ceng Bin,Ceng Kai,Jiang XiaoLi,
王宇熙
,曾斌,曾凯,姜小丽

计算机系统应用 , 2005,
Abstract: 本文提出了一种确定电子商务系统容量的方案:该方案基于主流技术J2ee,WebLogic的实际软件环境中,从服务器硬件、LAN基础结构、外部网络连通性三个方面确定一个电子商务系统实际案例的系统容量,实验数据和该实际案例日后的运行情况表明,在该容量规划方案的指导下搭建的系统运行环境可以保证电子商务系统的正常运行。
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