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Shi Peng-peng 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.3
The elastic stress field around a circular elastic inclusion in an infinite functionally graded material (FGM) panel that is subjected to auniform static anti-plane shear loading at infinity is considered. Assuming the rigidity modulus of the FGM panel to be exponential, theanalytical solutions of stress and strain distribution around the circular elastic inclusion are obtained by using the variable separationmethod. Due the generality of the elastic inclusion, other geometrical discontinuities, such as hole and rigid inclusion, can be seen asspecial cases of circular elastic inclusion when the inclusion rigidity modulus takes a suitable value. Therefore, the present solutions analyticallyreduce to some classical solution in some special cases. The present analytical solutions are compared with the existing exactsolutions to verify them. Finally, the effects of the relative inclusion rigidity modulus ratio and the inhomogeneous rigidity modulus ratioon the stress distribution and the concentration factor are systematically investigated.
Shi Peng-peng 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.9
A tubular interface crack in a hollow composite cylinder is analyzed under static torsion. For four frequently encountered constraintedges--free-free, clamped-clamped, free-clamped, or clamped-free edges--theoretical derivation is performed by the Fourier integraltransform method. The mixed boundary value problem associated with a mode-III interface crack for each case is reduced to a singularintegral equation, from which the numerical results of Stress intensity factors (SIFs) are obtained by the Lobatto-Chebyshev quadraturetechnique. Numerical results of SIFs show that a coupled effect exists of geometrical and physical parameters on the interfacial fracturebehavior, which clearly relates to the selecting of constraint edges.
Observation of multi-channel non-local transport in J-TEXT plasmas
Shi, Yuejiang,Chen, Zhongyong,Yang, Zhoujun,Shi, Peng,Zhao, Kaijun,Diamond, Patrick H.,Kwon, JaeMin,Yan, Wei,Zhou, Hao,Pan, Xiaoming,Cheng, Zhifeng,Chen, Zhiping,Yang, SeongMoo,Zhang, Chi,Li, Da,Dong, IOP 2018 Nuclear fusion. Fusion nucléaire. &n.Illiga Vol.58 No.4
<P>In cold pulse experiments in J-TEXT, not only are rapid electron temperature increases in the core observed, but also steep rises in the inner density are found. Moreover, some evidence of acceleration of the core toroidal rotation is also observed during the non-local transport process of electron temperature. These new findings of cold pulse experiments in J-TEXT suggest that turbulence spreading is a possible mechanism for the non-local transport dynamics.</P>
Impact of stereotypes on intercultural communication: a Chinese perspective
Shi-Yong Peng 서울대학교 교육연구소 2010 Asia Pacific Education Review Vol.11 No.2
Using Kuhn and McPartland's approach, 116 Chinese college students were recruited and asked to write as many sentences as possible beginning with "Chinese...,'' "Americans...,'' and "Japanese....'' The population of sentences consisted of 258 adjectives, of which 96 described Chinese, 53 described Americans, and 109 described Japanese. Next, the first ten adjectives with the highest frequencies describing Chinese, Americans, and Japanese, respectively were selected for the second step of data collection in that students were asked if they would accept these adjectives describing Chinese, Americans, and Japanese. If they did, they were further asked to provide examples or illustrations to support their agreement. Based on the top 30 adjectives and the qualitative data collected at the second step, students' perceptions of Chinese, American, and Japanese were analyzed. The results of the data analysis discovered that Chinese students are, to some extent, stereotyped toward American and Japanese, and their understanding of Chinese people is not accurate, either. The results confirm that media to certain extent are responsible for the shaping of some of the students' stereotypes. Evidently, the results of this study suggest that the Chinese students' stereotypes will affect their intercultural communication with Americans and Japanese. Although this study does not provide tactics on the reduction or elimination of stereotypes in the process of intercultural communication, it provides meaningful clues for future research in how stereotypes may be reduced by way of intercultural contact or training. This research has two major limitations. First, all the subjects are Chinese. Had American and Japanese samples been selected for a comparative investigation, more meaningful and insightful results could have been obtained. Second, because of the space constraints, verbs and nouns were not analyzed.
A Survey on Markovian Jump Systems: Modeling and Design
Peng Shi,Fanbiao Li 제어·로봇·시스템학회 2015 International Journal of Control, Automation, and Vol.13 No.1
Markovian jump systems are a special class of hybrid and stochastic systems which can be used to describe many real world applications, such as manufacturing systems, power systems, chemical systems, economic systems, communication and control, etc. In this paper, a survey on recent developments of modeling, analysis and design of Markovian jump systems is presented. First, stability issues on Markovian jump systems are addressed. Then a variety of control and filter design methods are systematically recalled. Furthermore, the new trends of Markovian jump systems with uncertain transition rates as well as semi-Markovian jump systems are also discussed.
Li, Shi-Lai,Su, Ming,Peng, Tao,Xiao, Kai-Yin,Shang, Li-Ming,Xu, Bang-Hao,Su, Zhi-Xiong,Ye, Xin-Ping,Peng, Ning,Qin, Quan-Lin,Chen, De-Feng,Chen, Jie,Li, Le-Qun Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.1
Background: Hepatocellular carcinoma (HCC) is one of the most common cancers worldwide, and the outcomes for patients are still poor. It is important to determine the original type of synchronous multinodular HCC for preoperative assessment and the choice of treatment therapy as well as for the prediction of prognosis after treatment. Aims: To analyze clinicopathologic characteristics and prognoses in patients with multicentric occurrence (MO) and intrahepatic metastasis (IM) of synchronous multinodular hepatocellular carcinoma (HCC). Methods: The study group comprised 42 multinodular HCC patients with a total of 112 nodules. The control group comprised 20 HCC patients with 16 single nodular HCC cases and 4 HCC cases with a portal vein tumor emboli. The mitochondrial DNA (mtDNA) D-loop region was sequenced, and the patients of the study group were categorized as MO or IM based on the sequence variations. Univariate and multivariate analyses were used to determine the important clinicopathologic characteristics in the two groups. Results: In the study group, 20 cases were categorized as MO, and 22 as IM, whereas all 20 cases in the control group were characterized as IM. Several factors significantly differed between the IM and MO patients, including hepatitis B e antigen (HBeAg), cumulative tumor size, tumor nodule location, cirrhosis, portal vein and/or microvascular tumor embolus and the histological grade of the primary nodule. Multivariate analysis further demonstrated that cirrhosis and portal vein and/or microvascular tumor thrombus were independent factors differentiating between IM and MO patients. The tumor-free survival time of the MO subjects was significantly longer than that of the IM subjects ($25.7{\pm}4.8$ months vs. $8.9{\pm}3.1$ months, p=0.017). Similarly, the overall survival time of the MO subjects was longer ($31.6{\pm}5.3$ months vs. $15.4{\pm}3.4$ months, p=0.024). The multivariate analysis further demonstrated that the original type (p=0.035) and Child-Pugh grade (p<0.001) were independent predictors of tumor-free survival time. Cirrhosis (p=0.011), original type (p=0.034) and Child-Pugh grade (p<0.001) were independent predictors of overall survival time. Conclusions: HBeAg, cumulative tumor size, tumor nodule location, cirrhosis, portal vein and/or microvascular tumor embolus and histological grade of the primary nodule are important factors for differentiating IM and MO. MO HCC patients might have a favorable outcome compared with IM patients.