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SLOTTED ATM COMPUTER RING NETWORK-THROUGHPUT AND DELAY
Bing, Lian Hong,Zhen, Tu Shi 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
This paper introduces a slotted ATM (Asynchronous Transfer Mode) ring network. The available bandwidth allocated to the node on the ring is analyzed. Under some assumptions we discover that the maximum throughput is only related to the mean cell trip (m). We demonstrate that the cell queue model in the node is Geometric /Geometric/ 1 queue. Finally, some numerical results of the network throughput and cell delay on the node are given.
Traffic Flow and Efficient Routing on Scale-Free Networks: A Survey
Bing-Hong Wang,Tao Zhou 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.1I
Recently, motivated by the pioneering that have revealed the small-world eect and scale-free property of various real-life networks, many scientists are devoting themselves to studying complex networks. In this paper, we give a brief review of studies on tra±c °ow and e±cient routing on scale-free networks, including tra±c dynamics based on the global routing protocol, tra±c dynamics based on the local routing protocol, and the critical phenomena and scaling behaviors of real and arti.cial tra±c. Finally, perspectives and some interesting problems are discussed.
Bing-Zhe Hong,박선아,Han-Na Kim,Tian-Ze Ma,Han-Gyu Kim,강형섭,김환규,곽용근 한국분자세포생물학회 2009 Molecules and cells Vol.28 No.1
Basic fibroblast growth factor (bFGF) plays an important role in angiogenesis. However, the underlying mechanisms are not clear. Mg2+ is the most abundant intracellular divalent cation in the body and plays critical roles in many cell functions. We investigated the effect of bFGF on the intracellular Mg2+ concentration ([Mg2+]i) in human umbilical vein endothelial cells (HUVECs). bFGF increased [Mg2+]i in a dose-dependent manner, independent of extracellular Mg2+. This bFGF-induced [Mg2+]i increase was blocked by tyrosine kinase inhibitors (tyrphostin A-23 and genistein), phosphatidylinositol 3-kinase (PI3K) inhibitors (wortmannin and LY294002) and a phospholipase Cγ (PLCγ) inhibitor (U73122). In contrast, mitogen-activated protein kinase inhibitors (SB202190 and PD98059) did not affect the bFGF-induced [Mg2+]i increase. These results suggest that bFGF increases the [Mg2+]i from the intracellular Mg2+ stores through the tyrosine kinase/PI3K/PLCγ- dependent signaling pathways.
Structure and Properties of Polyimide (BTDA-TDI/MDI co-polyimide) Fibers Obtained by Wet-Spinning
Hong Bing Xiang,Zhong Huang,Li Qi Liu,Lei Chen,Jing Zhu,Zu Ming Hu,Jun Rong Yu 한국고분자학회 2011 Macromolecular Research Vol.19 No.7
BTDA-TDI/MDI (P84, synthesized by the condensation of 2,4-diisocyanato-1-methylbenzene and 1,1' -methylenebis(4-isocyanatobenzene) with 5,5'-carbonylbis(l,3-isobenzofurandione)) co-polyimide fibers were prepared by wet-spinning. The basic spinning conditions were found from the studies of dope viscosity, ternary phase diagrams, coagulation value, and precipitation value. The effect of the coagulation bath composition on the morphology of as-spun fibers was investigated and a theoretical approach was used to understand the coagulation phenomena. Scanning electron microscopy (SEM) showed that the cross-sectional shape of the fiber deviated more from an ellipse shape with the increasement of N-methyl-2-pyrrdidinone (NMP) content. The surface and cross section morphology of the as-spun fibers was also analyzed by the rate of diffusion and phase separation. The as-spun fibers were treated in heating tubes without drawing at different temperatures. The gravimetric analysis spectra showed that the BTDA-TDI/MDI co-polyimide fibers, which had been heat treated at 350 and 400 ℃, possessed better thermal properties than the as-spun fibers, a large weight loss was observed only above 550 ℃. Heat treatment of the fibers resulted in relatively high tensile strength and modulus. The fibers spun in Bath C (70/30, NMP/water, wt/wt)and Bath D (80/20, NMP/water, wt/wt) showed better thermal properties and higher tensile strength.
Solution Method and Application Verification of the K-curve as a Highway Transition Curve
Bing-hong Pan,Changpeng Wen,Kaiming Wang,Changjiang Liu,Linqi Chen 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.7
Because of the singular form and low flexibility of the clothoid as a highway transition curve in highway horizontal alignment, the K-curve, whose ratio of the chord-tangent angle to the tangential angle at any point is fixed, was proposed in a previous work, including the corresponding parametric equations and basic characteristics, and its high flexibility and various shapes were proved. Here, the application and verification of the K-curve in highway alignment is further studied. The solution methods of the K-curve for different connections are given. Through theoretical calculations and specific real-world examples, the geometric positions and lateral forces of the K-curve and the clothoid under different connection conditions are compared. The results show that the difference between the K-curve and clothoid in the above two aspects under a straight line-to-circle connection is greater than that under a circle-to-circle connection as an egg curve, and although the lateral force coefficient of the K-curve is smaller than that of the clothoid, the K-curve suffers from rapid change in the lateral force coefficient and a higher lateral acceleration change rate. Finally, the application conditions of the K-curve for highway alignment design are given with consideration of the centrifugal acceleration change rate.