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Search Results: 1 - 10 of 54364 matches for " TAN Jing-Wen "
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An Analytical Framework for Performance of Different Fault Restoration Policies with QoS Constraints in MPLS Networks
Xian-Si Tan,Zong-Kai Yang,Liang Ou,Jing-Wen Chen,Ya-Jie Ma,
Xian-Si Tan
,Zong-Kai Yang,Liang Ou,Jing-Wen Chen,and Ya-Jie Ma

计算机科学技术学报 , 2004,
Abstract: An analytical framework for the performance of different protection switching restoration mechanisms with different protection policies in Multi-Protocol Label Switching (MPLS) networks is developed, where the protection policy may be 1 1, 1:1, n:1 or n:m. As a general rule, it aims at the MPLS networks with the protection paths created in advance of fault occurrence without resources reserved, and it reroutes the protected traffic in the event of link or router failures while trying to maintain quality of service (QoS) requirements. Based on the proposed protocol for processing faults, an analytical model and an evaluating model are created, and the benefits and penalties of different mechanisms with different protection policies are evaluated. In particular, an improvement on the proposed protocol is presented to overcome the drawbacks of n:m protection policy in which m > 1 and n > 1.
Reclassification of 33 clinical strains of Sporothrix from northern China based on phenotypic and molecular characters
来自中国北方部分地区?33?株孢子丝菌菌株的表型和基因型鉴定

TAN Jing-Wen,LIU Wei,WAN Zhe,LI Ruo-Yu,
谭静文
,刘伟,万喆,李若瑜

菌物学报 , 2013,
Abstract: 孢子丝菌病是一种临床常见的真菌感染疾病,近期有研究认为其致病菌是由多个同形种构成的复合体。为明确我国孢子丝菌病致病菌的生理学以及分子生物学方面的特点,对33株分离自我国孢子丝菌病患者组织的病原菌进行了研究,首先检测其在37℃是否生长以及PDA培养基上生长21d的菌落直径,其次检测其糖同化特点,最后对其钙调蛋白(Calmodulin,CAL)基因进行PCR扩增、序列测定以及系统进化分析。结果显示,这些菌株全部为球形孢子丝菌Sporothrix globosa,说明我国孢子丝菌病的病原菌可能以球形孢子丝菌为主。
A priori bounds for periodic solutions of neutral differential equations with delay
Jing-Wen Li,Sui Sun Cheng
Tamkang Journal of Mathematics , 2007, DOI: 10.5556/j.tkjm.38.2007.239-246
Abstract: A priori bounds are established for periodic solutions of a neutral delay differential equation. Such bounds can be used to establish existence of periodic solutions. The resulting existence results improve some existing ones in the literature.
Performance Evaluation on Fault Restoration in MPLS Networks with m:n Architecture
m:n策略下的MPLS网络故障恢复性能评估

Tan Xian-si,Ma Ya-Jie,Chen Jing-wen,He Jian-hua,Yang Zong-kai,
谭贤四
,马娅婕,陈京文,何建华,杨宗凯

电子与信息学报 , 2004,
Abstract: In this paper, an efficient and fast fault restoration mechanism based on m : n architecture with bandwidth constraints is proposed while three evaluating parameters are selected and formulated. The comparison of restoration performance, which is based on different protection range such as local restoration, partial path restoration arid path restoration, is given. Also the proposed analytical algorithm can be applied to evaluate the restoration performance of MPLS networks when based on 1+1, 1:1 or 1 : n architecture.
PULSE CALIBRATION TECHNIQUE OF X-RAY DETECTOR
X射线探测器的脉冲标定技术

SUN JING-WEN,
孙景文

物理学报 , 1986,
Abstract: 利用强流电子束技术产生通量密度为1018—1019X-ray photon/sr·s的脉冲CuKX射线源,标定PIN型硅二极管半导体探测器对X光子的脉冲灵敏度。用绝对X射线监测器——P10气体脉冲电离室作为脉冲X射线通量密度的标准。脉冲电荷自动测量仪由微处理机进行程序控制,并予以实时校准。该电离室测量通量密度的精度为±5%,适用的能通量率范围可达4×10-9—2×102W/cm2,适用的光子能量范围为1.5—10keV,标定探测器的精度为±7.0%,并发现PIN型硅二极管的脉冲灵敏度比稳态X射线束标定的灵敏度高30%左右。
Bis(μ2-pyridine-2-carboxamide oximato)bis[(pyridine-2-carboxamide oxime)zinc] dinitrate
Xiao-Hui Deng,Jing-Wen Ran
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811034908
Abstract: In the title dinuclear compound, [Zn2(C6H6N3O)2(C6H7N3O)2](NO3)2, the ZnII cation is N,N′-chelated by one pyridine-2-carboxamide oximate anion and one pyridine-2-carboxamide oxime molecule, and is further bridged by an oxime O atom from the adjacent pyridine-2-carboxamide oximate anion, forming a distorted trigonal bipyramidal coordination. Two pyridine-2-carboxamide oximate anions bridge two ZnII cations to form the centrosymmetric dinuclear molecule. Extensive O—H...O, N—H...O and O—H...N hydrogen bonds are present in the crystal structure.
Bis[μ3-N′-oxidopyridine-2-carboximidamidato(2−)]bis[μ2-N′-oxidopyridine-2-carboximidamidato(1−)]tetrapyridinetetranickel(II) dinitrate
Xiao-Hui Deng,Jing-Wen Ran
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536811052524
Abstract: The title compound, [Ni4(C6H5N3O)2(C6H6N3O)2(C5H5N)4](NO3)2, is a tetranuclear nickel complex containing a single-decker cation, located on an inversion center. The two unique NiII cations are N,N′,N′′,O-chelated by carboximidamidate(2 ) and carboximidamidate(1 ) anions, forming a distorted four-coordinate planar structure, while the other two NiII atoms are N,N′,O,O′-chelated by the same bridging ligands and two pyridine molecules, affording six-coordinated metals in an octahedral geometry. The cation is isostructural with the complex crystallized with perchlorate counter-ions in place of nitrate.
Ostrowski Type Inequalities in the Grushin Plane
Heng-Xing Liu,Jing-Wen Luan
Journal of Inequalities and Applications , 2010, DOI: 10.1155/2010/987484
Abstract: Motivated by the work of B.-S. Lian and Q.-H. Yang (2010) we proved an Ostrowski inequality associated with Carnot-Carathéodory distance in the Grushin plane. The procedure is based on a representation formula. Using the same representation formula, we prove some Hardy type inequalities associated with Carnot-Carathéodory distance in the Grushin plane.
Ostrowski Type Inequalities in the Grushin Plane
Liu Heng-Xing,Luan Jing-Wen
Journal of Inequalities and Applications , 2010,
Abstract: Motivated by the work of B.-S. Lian and Q.-H. Yang (2010) we proved an Ostrowski inequality associated with Carnot-Carathéodory distance in the Grushin plane. The procedure is based on a representation formula. Using the same representation formula, we prove some Hardy type inequalities associated with Carnot-Carathéodory distance in the Grushin plane.
Another Fast and Simple DEM Depression-Filling Algorithm Based on Priority Queue Structure
基于优先队列的另一种简单快速的DEM填洼算法

LIU Yong-He,ZHANG Wan-Chang,XU Jing-Wen,
LIU Yong-He
,ZHANG Wan-Chang,XU Jing-Wen

大气和海洋科学快报 , 2009,
Abstract: Some depression cells with heights lower than their surrounding cells may often be found in Grid-based digital elevation models (DEM) dataset due to sampling errors. The depression-filling algorithm presented by Planchon and Darboux works very quickly compared to other published methods. Despite its simplicity and delicacy, this algorithm remains difficult to understand due to its three complex subroutines and its recursive execution. Another fast algorithm is presented in this article. The main idea of this new algorithm is as follows: first, the DEM dataset is viewed as an island and the outer space as an ocean; when the ocean level increases, the DEM cells on the island’s boundary will be inundated; when a cell is inundated for the first time, its elevation is increased to the ocean level at that moment; after the ocean has inundated the entire DEM, all of the depressions are filled. The depression-removing processing is performed using a priority queue. Theoretically, this new algorithm is a fast algorithm despite the fact that it runs more slowly than Planchon and Darboux’s method. Its time-complexity in both the worst case and in an average case is O(8nlog2(m)), which is close to O(n). The running speed of this algorithm depends mainly on the insertion operation of the priority queue. As shown by the tests, the depression-filling effects of this algorithm are correct and valid, and the overall time consumption of this algorithm is less than twice the time consumed by Planchon & Darboux’s method for handling a DEM smaller than 2500×2500 cells. More importantly, this new algorithm is simpler and easier to understand than Planchon and Darboux’s method. This advantage allows the correct program code to be written quickly.
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