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| 1 | In-plane bistatic backward scattering from seabottom with randomly inhomogeneous sediment and rough interface显示文摘The in-plane bistatic backward scattering caused by seabottom with random inhomogeneities and rough interface is studied. This work combines the ray tube integral method of Ivakin et al. and the complex-ray/steepest descent method of Hines. For a given incident grazing angle, the theoretical expression can easily be used to calculate scattering strength for different backward scattering angles. (This is essential for modeling shallow water reverberation by the normal mode approach.) The model is tested against published scattering measurements. The frequency/angle dependence of backward scattering and effects of volume inhomogeneity parameters on backward scattering are also discussed. | PENG Zhaohui1,,ZHOU Jixun1,& ZHANG Renhe1 2 2 1.Institute of Acoustics,Chinese Academy of Sciences,Beijing 100080,China 2.School of Mechanical Engineering,Georgia Institute of Technology,Atlanta,GA 30332,USA | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，6： | 8 |
| 2 | Effects of salinity on methane gas hydrate system显示文摘Using an approximately analytical formation, we extend the steady state model of the pure methane hydrate system to include the salinity based on the dynamic model of the methane hydrate system. The top and bottom boundaries of the methane hydrate stability zone (MHSZ) and the actual methane hy-drate zone (MHZ), and the top of free gas occurrence are determined by using numerical methods and the new steady state model developed in this paper. Numerical results show that the MHZ thickness becomes thinner with increasing the salinity, and the stability is lowered and the base of the MHSZ is shifted toward the seafloor in the presence of salts. As a result, the thickness of actual hydrate occur-rence becomes thinner compared with that of the pure water case. On the other hand, since lower solubility reduces the amount of gas needed to form methane hydrate, the existence of salts in sea-water can actually promote methane gas hydrate formation in the hydrate stability zone. Numerical modeling also demonstrates that for the salt-water case the presence of methane within the field of methane hydrate stability is not sufficient to ensure the occurrence of gas hydrate, which can only form when the methane concentration dissolved in solution with salts exceeds the local methane solubility in salt water and if the methane flux exceeds a critical value corresponding to the rate of diffusive methane transport. In order to maintain gas hydrate or to form methane gas hydrate in marine sedi-ments, a persistent supplied methane probably from biogenic or thermogenic processes, is required to overcome losses due to diffusion and advection. | YANG DingHui1 & XU WenYue2 1 Department of Mathematical Sciences, Tsinghua University, Beijing 100084, China 2 School of Earth & Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA | 2007 | Science China Earth Sciences2007，50，11： | 5 |
| 3 | Advanced information feedback strategy in intelligent two-route traffic flow systems显示文摘The optimal information feedback has a significant effect on many socioeconomic systems like stock market and traffic systems aiming to make full use of resources. In this paper, we study dynamics of traffic flow with real-time information. The influence of a feedback strategy named vehicle number feedback strategy (VNFS) is introduced, in which we only calculate the vehicle number of first 500 route sites from the entrance. Moreover, the two-route traffic system has only one entrance and one exit, which is different from those in the previous work. Our model incorporates the effects of adaptability into the cellular automaton models of traffic flow, and simulation results by adopting this optimal information feedback strategy have demonstrated higher efficiency in controlling spatial distribution of traffic patterns than the other three information feedback strategies, i.e., TTFS, MVFS and CCFS. | DONG ChuanFei1,2, MA Xu1,3 & WANG BingHong1,4 1Department of Modern Physics and Nonlinear Science Center, University of Science and Technology of China (USTC), Hefei 230026, China 2School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA 3 Department of Physics, Syracuse University, Syracuse, NY 13244, USA 4The Research Center for Complex System Science, University of Shanghai for Science and Technology and Shanghai Academy of System Science, Shanghai 200093, China | 2010 | Science China(Information Sciences)2010，53，11： | 2 |
| 4 | Towards property nanomeasurements byin—situ TEM present and prospects显示文摘 | WANG Zhong\|lin (School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332\|0245 USA) | 2000 | 电子显微学报2000，19，1： | 2 |
| 5 | Preface显示文摘We have witnessed the necessity of collaboration and resource sharing in many distributed applications,e.g.,grid computing platform for e-Science,the PlanetLab experimental platform for distributed systems and overlay networks, P2P file sharing for fast information dissemination,cooperative caching for Web content delivery,enterprise collaboration in E-commerce,location-based services,and so on.In such a loosely-coupled open computing system, trust and reputation management becomes essential for building a healthy collaboration among participants that do not have prior knowledge about one another. | Prof.Ling Liu,College of Computing,Georgia Institute of Technology,Atlanta,GA 30332,U.S.A. Prof.Wei-Song Shi,Department of Computer Science,Wayne State University,Detroit,MI 48202,U.S.A. | 2009 | Journal of Computer Science & Technology2009，24，5： | 1 |
| 6 | American Cancer Society Cancer Facts & Figures 显示文摘 | Atlanta | 2012 | USA:American Cancer Society2012，20，2： | 1 |
| 7 | SYMPLECTIC SCHEMES FOR QUASILINEAR WAVE EQUATIONS OF KLEIN-GORDON AND SINE-GORDON TYPE显示文摘A class of finite difference methods of first- and second-order accuracy for the computa- tion of solutions to the quasilinear wave equations is presented. These difference methods are constructed based on the symplectic schemes to the infinite-dimensional Hamiltonian system. Numerical experiments are presented to demonstrate the superior performance of these methods. | Xiao-wu Lu (Department of Mathematics and Computer Science, Emory University, Atlanta, GA 30322, USA) | 2001 | Journal of Computational Mathematics2001，19，5： | 1 |
| 8 | Erectile dysfunction (diagnostics); techniques for diagnosing impotence factors vary in efficacy显示文摘 | Atlanta | 1998 | TB Outbreaks Weekly1998，1，： | 1 |
| 9 | Reconstrution of alveolar bone defects after extractiong of mandibular third molars显示文摘 | Dodson TB Atlanta G | 1996 | Oral Surg Oral Med Oral Pathol1996，83，3： | 1 |
| 10 | Agency for Toxic Substances and Disease Registry显示文摘 | Services Public Atlanta G A | 2012 | Tox Guide for Manganese2012，13，11： | 1 |
| 11 | The compact range显示文摘 | Scientific Atlanta Inc | 1974 | Microwave Joural1974，17，： | 1 |
| 12 | Recovery of high-purity Pt from Pt-Au bimetallic nanoparticles using organic aqua regia显示文摘Using organic aqua regia,a recently discovered powerful organic leaching agent,an effective process of recovering Pt directly from Pt-Au bimetallic nanoparticles was demonstrated.The purities of the Pt recovered from a mixture of Au and Pt nanoparticles and from Pt-Au core-shell nanoparticle catalyst are as high as (99.49±0.22)%,and (95.02±0.08)%,respectively.The novel recovery process promises applications in catalysis industry. | LIN Wei School of Materials Science & Engineering,Georgia Institute of Technology,Atlanta,Georgia,30332,USA | 2012 | Rare Metals2012，31，1： | 1 |
| 13 | Quality of Life: Advanced cancer patient quality of life improved by symptom clustering 显示文摘 | Atlanta W | 2006 | Bioteeh Week2006，20，： | 1 |
| 14 | Improving the catalytic activity of Candida antarctica lipase B by circular permutation显示文摘 | DICKEY D ATLANTA G | 2005 | J Am Chem Soc2005，127，13： | 1 |
| 15 | A Simultaneously Diffused,Textured,In-Situ Oxide AR-Coating Solar Cell Process(STAR Process)forHigh-Efficiency Silicon Solar Cells显示文摘 | Krygowski T Rohatgi A Atlanta G A | 1998 | IEEE Transactions on Electron Devices1998，45，1： | 1 |
| 16 | Lowering Mycotoxins,Sorghum types have varied antifungal proterns, preventing grain deterioration 显示文摘 | Atlanta | 2003 | Drag Week2003，28，： | 1 |
| 17 | Improving the catalytic activity of Candida antarctica lipase B by circular permutation显示文摘 | Dickey Drive Atlanta Georgia | 2005 | J Am Chem Soc2005，127，13： | 1 |
| 18 | Renovascular Hypertension,ACE inhibition causes regression of cardiac hypertrophy/remodeling by apoptosis显示文摘 | Atlanta | 2003 | Heart disease Weekly2003，，： | 1 |
| 19 | The Preparation and Antioxident Activity of BHA Bonded to Porous Glass显示文摘 | Atlanta Georgia | 1998 | B C CLARK1998，，56： | 1 |
| 20 | Axial Cone Beam Reconstruction with Asymptotic Trajectory Extrapolation Implemented by 3-D Weighting Scheme显示文摘Axial scan along circular trajectory has been the most desirable in clinical and preclinical applications.However,due to the violation of the data sufficiency condition,the reconstruction accuracy of axial scan deteriorates rapidly with increasing detector z-dimension.A number of algorithms have been proposed thus far to improve the reconstruction accuracy.It is well understood that,the larger the radius of circular trajectory,the more accurate the reconstruction.Ultimately,the reconstruction becomes accurate if the trajectory radius reaches infinite.Inspired by such observations,an asymptotic weighting scheme is proposed here for axial scan at large cone angles to improve reconstruction accuracy.In practice,there may be other ways to implement the asymptotic 3-D weighting scheme,and we present one approach in this paper with preliminary results.Further investigation may enable this asymptotic weighting scheme to improve reconstruction accuracy significantly,enabling numerous applications in which axial scan at large z-dimension is desired. | TANG Xiangyang Department of Radiology,Emory University School of Medicine,Atlanta 30322,USA Computed Tomography and Molecular Imaging,GE Healthcare,Waukesha 53188,USA | 2010 | Tsinghua Science and Technology2010，15，1： | 0 |
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