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Search Results: 1 - 10 of 42038 matches for " Yong Song "
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‘Operational sequence analysis’ applied to pottery making techniques in Korea
Park Song-Yong
International Journal of Intangible Heritage , 2010,
Abstract: This study uses ‘operational sequence analysis’ to examine the technical processes, methods and strategies that Korean potters have used in the adoption and rejection of new pottery technologies. We contend that the introduction of new technical elements weakens the relationship between the traditional agents of the pottery-makingprocess. In particular, potters are compromising traditional techniques by using modern technology. On the one hand, potters still use traditional tools such as the bottom flattener, the wooden paddle, the anvil and cloth finishing strips while at the same time using improved kilns and electronic potters’ wheels. This compromise has arisen because of changes in technical knowledge about making pottery which have resulted in this synthesis of traditional and modern methods. Anthropological studies will explain pottery-making techniques and knowledge relating to the craft in Korea on both macro and micro levels.
Comments to Metallothionein as an Anti-Inflammatory Mediator
Yong-Song Guan
Mediators of Inflammation , 2009, DOI: 10.1155/2009/426214
Abstract:
A Cosmological Test of Standard Gravity by Weak Lensing
Yong-Seon Song
Physics , 2006,
Abstract: The large scale structure formation in the standard Einstein gravity at later time is uniquely determined by the expansion history H(z) measured by the geometrical factor. A possible departure from the expected standard structure formation is detectable by growth structure test. We design new deviation parameters to test standard gravity at large scales and estimate the expected errors by weak lensing experiment. The effective Newtonian constant G_N at the present time can be constrained around 10% accuracy by measuring the difference curvature perturbations (\Phi-\Psi)/2 within 2% accuracy.
Coherent Combination of Baryon Acoustic Oscillation Statistics and Peculiar Velocity Measurements from Redshift Survey
Yong-Seon Song
Physics , 2010, DOI: 10.1103/PhysRevD.83.103009
Abstract: New statistical method is proposed to coherently combine Baryon Acoustic Oscillation statistics (BAO) and peculiar velocity measurements exploiting decomposed density-density and velocity-velocity spectra in real space from the observed redshift distortions in redshift space, 1) to achieve stronger dark energy constraints, \sigma(w)=0.06 and \sigma(w_a)=0.20, which are enhanced from BAO or velocity measurements alone, and 2) to cross-check consistency of dark energy constraints from two different approaches; BAO as geometrical measurements and peculiar velocity as large scale structure formation observables. In addition to those advantages, as power spectra decomposition procedure is free from uncertainty of galaxy bias, this simultaneous fitting is an optimal method to extract cosmological parameters without any pre-assumption about galaxy bias.
Direct Determination of Expansion History Using Redshift Distortions
Yong-Seon Song
Physics , 2012, DOI: 10.1103/PhysRevD.87.023005
Abstract: We investigate the direct determination of expansion history using redshift distortions without plugging into detailed cosmological parameters. The observed spectra in redshift space include a mixture of information: fluctuations of density-density and velocity-velocity spectra, and distance measures of perpendicular and parallel components to the line of sight. Unfortunately it is hard to measure all the components simultaneously without any specific prior assumption. Common prior assumptions include a linear/quasi-linear model of redshift distortions or a model for the shape of the power spectra, which eventually breaks down on small scales at later epochs where nonlinear structure formation disturbs coherent growth. The degeneracy breaking, between the effect of cosmic distances and redshift distortions for example, depends on the prior we assume. An alternative approach is to utilize the cosmological principle inscribed in the heart of the Friedmann-Lematre-Robertson-Walker (hereafter FLRW) universe, that is, the specific relation between the angular diameter distance and the Hubble parameter, in this degeneracy breaking. We show that utilizing this FLRW prior early in the step of distinguishing the distance effect from redshift distortions helps us improve the detectability of power spectra and distance measures with no leaning on a combination of other experiments.
A Cross-Layer Scheme for Handover in 802.16e Network with F-HMIPv6 Mobility  [PDF]
Yi ZHENG, Yong ZHANG, Yinglei TENG, Mei SONG
Communications and Network (CN) , 2009, DOI: 10.4236/cn.2009.11005
Abstract: IEEE802.16e is the major global cellular wireless standard that enables low-cost mobile Internet application. However, existing handover process system still has latency affects time-sensitive applications. In this paper, the handover procedures of 802.16e and Fast Handover for Hierarchical MIPv6 (F-HMIPv6) are reconstructed to achieve a better transmission performance. The concept of cross layer design is adopted to refine the existing handover procedure specified in 802.16e MAC layer and F-HMIPv6. More specifically, layer2 and layer3 signaling messages for handover are analyzed and combined/interleaved to optimize the handover performance. Extensive simulations show that the proposed scheme in this paper is superior to the other scheme proposed by IETF.
A new method of building permeability model in low-permeability reservoir numerical simulation  [PDF]
Yong-Chao Xue, Lin-Song Cheng, Lei Su
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.22020
Abstract: Aiming at solving the problem that big differ-ence exists between logging permeability and true permeability of micro-fractured low-permeability sand reservoir, this paper puts forward a new method to revise logging per-meability by using primiparity data of oil field. This method has been successfully applied to revise logging permeability of micro-fractured low-permeability sand reservoir in Baiyushan area of Jing’An oil field, which shows that the method is reliable because the geological model building through the permeability which has been handled by this method accords with the real reservoir significantly.
β-cyclodextrin Covalently Functionalized Single-Walled Carbon Nanotubes: Synthesis, Characterization and a Sensitive Biosensor Platform  [PDF]
Yong Gao, Yu Cao, Guiling Song, Yiming Tang, Huaming Li
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2011, DOI: 10.4236/jbnb.2011.24055
Abstract: In this study, we presented the preparation of β-cyclodextrin (β-CD) covalently functionalized single-walled carbon nanotubes (SWCNTs) and its application in modifying the solid glass carbon electrode (GCE). Cyclic voltammetry (CV) method was employed to evaluate the performance of the modified GCE. Solubility experiment indicated the conjugation of SWCNTs and β-CD, SWCNTs-β-CD with 8 wt% β-CD content could be well dispersed in water. High-resolution transmission electron microscopy (HRTEM) demonstrated that the aggregated SWCNTs bundle were effectively exfoliated to small bundle, even individual tube. The β-CD component was grafted on the side walls as well as tips of SWCNTs, and the grafted β-CD component was not uniformly coated on the surface of SWCNTs. The CV measurements indicated the performance of the GCE modified by SWCNTs-β-CD was better than that of the GCE modified by the hybrid of SWCNTs/β-CD, where ascorbic acid (AA) and uric acid (UA) were selected as a prelimiltary substrate to evaluate it. The enhanced performance of the modified GCE should be ascribed to the integration of the excellent electrocatalytic property of SWCNTs with the inclusion ability of β-CD to analyte molecule.
R&D-Marketing Integration and Performance—Evidence Provided by Agricultural Science and Technology Enterprises  [PDF]
Qiong Yao, Meisi Xu, Hua Song, Wenfang Jiang, Yong Zhang
Journal of Service Science and Management (JSSM) , 2014, DOI: 10.4236/jssm.2014.71003
Abstract:

R&D-marketing integration is an important factor of technological innovation success. This study explores the relationships among R&D-marketing integration, business performance, and social performance in the context of Chinese agricultural science and technology enterprises. The findings suggest that the integration of R&D-marketing has a positive effect both on business performance and social performance, and that business performance serves as a mediator in the relationship between the integration of R&D-marketing and social performance. This study provides empirical evidence for the research in the relationships between the integration of R&D and enterprise performance and contributes to the policy-making on the technological innovation.

Design of Quasi-Optical Lens Antenna for W-Band Short Range Passive Millimeter-Wave Imaging  [PDF]
Qike Chen, Yong Fan, Jingshi Zhou, Kaijun Song
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.33016
Abstract:

A quasi-optical dielectric lens used for W-band focal plane array passive imaging has been developed. The imaging system requires the lens to form beam spot with 3 dB width less than 35 mm at distance of 3500 mm. The powerful optical design software ZEMAX was utilized to design the contours of the lens, and numerical method based on ray tracing and Huygens’ Principle was processed to verify the design result. Measurement result shows that the 3 dB width of the beam spot formed by the lens is 34 mm at distance of 3460 mm, and the beam pattern on imaging plane are equally arranged and the intensity decreases only 0.55 dB while the object lateral deviation increases to 300 mm.

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