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Search Results: 1 - 10 of 4727 matches for " Yanchao Duan "
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The Synergistic Effects Study of C-myc and C-erbB-2 in the Carcinogenesis of Gastric Carcinoma  [PDF]
Keqiang Wang, Jiangang Liu, Yanchao Duan, Shengyi Dongye, Jiafeng Wu, Yiren Wang, Zhenzhong Liu, Guoxin Han
Open Journal of Gastroenterology (OJGas) , 2017, DOI: 10.4236/ojgas.2017.712032
Abstract: Objective: To study the significance of c-myc and c-erbB-2 oncogene expression in gastric cancer. Methods: 81 gastric cancer specimens were detected for c-myc and c-erbB-2 oncogene amplification using non-radioactive in situ hybridization method. Results: The amplification rates for c-myc and c-erbB-2 were 67.9% and 50.6% respectively, and there were significant correlation in the amplification of these two genes (χ2 = 7.26, P < 0.01). Conclusions: The amplification of c-myc and c-erbB-2 may play an important role in gastric cancer development, and these two genes may have synergistic effect.
Reading comprehension without phonological mediation: Further evidence from a Chinese aphasic individual
ZaiZhu Han,YanChao Bi
Science China Life Sciences , 2009, DOI: 10.1007/s11427-009-0048-x
Abstract: An important issue in visual word comprehension literature is whether or not semantic access is mediated by phonological processing. In this paper, we present a Chinese individual, YGA, who provides converging evidence to directly address this issue. YGA has sustained damage to the left posterior superior and middle temporal lobe, and shows difficulty in orally name pictures and reading printed words aloud. He makes phonological errors on these tasks and also semantic errors on picture naming, indicating a deficit at accessing the phonological representations for output. However, he is intact at understanding the meaning of visually presented words. Such a profile challenges the hypothesis that semantic access in reading is phonologically mediated and provides further evidence for the universal principle of direct semantic access in reading.
Shape Tracking With Occlusions via Coarse-To-Fine Region-Based Sobolev Descent
Yanchao Yang,Ganesh Sundaramoorthi
Computer Science , 2012,
Abstract: We present a method to track the precise shape of an object in video based on new modeling and optimization on a new Riemannian manifold of parameterized regions. Joint dynamic shape and appearance models, in which a template of the object is propagated to match the object shape and radiance in the next frame, are advantageous over methods employing global image statistics in cases of complex object radiance and cluttered background. In cases of 3D object motion and viewpoint change, self-occlusions and dis-occlusions of the object are prominent, and current methods employing joint shape and appearance models are unable to adapt to new shape and appearance information, leading to inaccurate shape detection. In this work, we model self-occlusions and dis-occlusions in a joint shape and appearance tracking framework. Self-occlusions and the warp to propagate the template are coupled, thus a joint problem is formulated. We derive a coarse-to-fine optimization scheme, advantageous in object tracking, that initially perturbs the template by coarse perturbations before transitioning to finer-scale perturbations, traversing all scales, seamlessly and automatically. The scheme is a gradient descent on a novel infinite-dimensional Riemannian manifold that we introduce. The manifold consists of planar parameterized regions, and the metric that we introduce is a novel Sobolev-type metric defined on infinitesimal vector fields on regions. The metric has the property of resulting in a gradient descent that automatically favors coarse-scale deformations (when they reduce the energy) before moving to finer-scale deformations. Experiments on video exhibiting occlusion/dis-occlusion, complex radiance and background show that occlusion/dis-occlusion modeling leads to superior shape accuracy compared to recent methods employing joint shape/appearance models or employing global statistics.
Matching Through Features and Features Through Matching
Ganesh Sundaramoorthi,Yanchao Yang
Computer Science , 2012,
Abstract: This paper addresses how to construct features for the problem of image correspondence, in particular, the paper addresses how to construct features so as to maintain the right level of invariance versus discriminability. We show that without additional prior knowledge of the 3D scene, the right tradeoff cannot be established in a pre-processing step of the images as is typically done in most feature-based matching methods. However, given knowledge of the second image to match, the tradeoff between invariance and discriminability of features in the first image is less ambiguous. This suggests to setup the problem of feature extraction and matching as a joint estimation problem. We develop a possible mathematical framework, a possible computational algorithm, and we give example demonstration on finding correspondence on images related by a scene that undergoes large 3D deformation of non-planar objects and camera viewpoint change.
Effects of DC Magnetic Bias on the Magnetic and Sound Fields of Transformer  [PDF]
Yan Li, Yanchao Gao, Longnv Li, Di Zhang, Fangxu Han
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B209
Abstract:

DC bias current flowing into the neutral point of power transformer will seriously affect the normal operation of AC power system. In this paper, exciting current, harmonic component of the excitation current, magnetic flux density and noise of transformer were analyzed when the transformer is in the no-load operation state based on field-circuit coupled method. Through the calculation and analysis, some reference bases are provided for design of transformer.

Reading comprehension without phonological mediation: Further evidence from a Chinese aphasic individual

ZaiZhu Han,YanChao Bi,

中国科学C辑(英文版) , 2009,
Abstract: Abstrct An important issue in visual word comprehension literature is whether or not semantic access is mediated by phonological processing. In this paper, we present a Chinese individual, YGA, who provides converging evidence to directly address this issue. YGA has sustained damage to the left posterior superior and middle temporal lobe, and shows difficulty in orally name pictures and reading printed words aloud. He makes phonological errors on these tasks and also semantic errors on picture naming, indicating a deficit at accessing the phonological representations for output. However, he is intact at understanding the meaning of visually presented words. Such a profile challenges the hypothesis that semantic access in reading is phonologically mediated and provides further evidence for the universal principle of direct semantic access in reading. Supported by Grants PCSIRT (IRT0710), National Natural Science Foundation of China (Grant Nos. 30770715, 30700224), Beijing Natural Science Foundation (Grant No.7082051).
INHOMOGENEOUS FEATURES IN ME1-YU FRONTAL CLOUD SYSTEM

Huang Meiyuan,Hong Yanchao,

大气科学进展 , 1984,
Abstract: The structure of radar echo in stratiform cloud which was found in mei-yu frontal cloud system is generally inhomogeneous, especially in the structure of bright band echoes. The inhomogeneous structure of warm region in stratiform cloud and the shower feature of precipitation are closely related to the inhomogeneous structure of bright band and convective cells embedded in stratiform cloud.During Summer time the mei-yu cloud system is an important precipitating system in the southern part of China. To study its structure is of great significance for weather forecast and understanding the physical processes of cloud and precipitation. Therefore, we have observed mei-yu frontal cloud system by use of 711 type radar (3 cm) and airplane at Tunxi, Anhui Province since 1979. It was found that the structure of stratiform cloud, especially the structure of its warm region appears to be inhomogeneous1),2). This is a significant feature of cloud structure in mei-yu frontal cloud system. In this paper, we shall further analyse this inhomogeneous structure of stratiform cloud and study its effect on the precipitation.
Higher-Order Numeric Solutions for Nonlinear Systems Based on the Modified Decomposition Method  [PDF]
Junsheng Duan
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.21001
Abstract:

Higher-order numeric solutions for nonlinear differential equations based on the Rach-Adomian-Meyers modified decomposition method are designed in this work. The presented one-step numeric algorithm has a high efficiency due to the new, efficient algorithms of the Adomian polynomials, and it enables us to easily generate a higher-order numeric scheme such as a 10th-order scheme, while for the Runge-Kutta method, there is no general procedure to generate higher-order numeric solutions. Finally, the method is demonstrated by using the Duffing equation and the pendulum equation.

Fiscal Decentralization, Corruption and Urban-Rural Income Inequality: Evidence from China  [PDF]
Longlong Duan
Theoretical Economics Letters (TEL) , 2015, DOI: 10.4236/tel.2015.54056
Abstract: This paper follows fiscal federalism that a higher degree of fiscal decentralization is always associated with lower corruption and income inequality. There exists a stronger dynamic relationship among fiscal decentralization, corruption and income inequality in developing countries. Based on the panel dataset from 1999 to 2012, this research is focusing on China, showing that it does not exist a simple linear relationship among fiscal decentralization, corruption and urban-rural income inequality, instead, the relationship between fiscal decentralization and urban-rural income inequality is more in line with a specific “U” shape. While the effect of corruption on urban-rural income inequality, it can be gradually weakened as the reform of fiscal decentralization which expands the existed researches made by Mah (2013) and Lessmann (2010).
A Study of Fostering College English Students’ Awareness of Cultural Comparison in Chinese Classrooms  [PDF]
Libin Duan
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.45013
Abstract: The study examines the effectiveness of different culture-oriented approaches to foster college English students’ awareness of cultural comparison in Chinese classrooms. A survey about college students’ status quo in English learning indicates that they are poor in western cultural knowledge, especially lack cultural comparative sense and ability. Therefore, based on the second language acquisition theory and the constructivism theory, the study aims at exploring some effective culture-oriented approaches to develop Chinese college English students’ cross-cultural communication ability. After a term’s experimental teaching in the author’s two classes, and data collection and analysis, it is concluded that the following approaches are effective: duty report, various classroom activities, self-access study, hosting the online instruction, etc.
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