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Search Results: 1 - 10 of 104281 matches for " Xianmin Zhang "
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The Impact of Local Community Participation on Branding Ethnic Tourism Destination: A Case Study of House Renovation in Jiaju Tibetan Village  [PDF]
Xianmin Mai, Chuntao Wu, Tingting Zhang, Zhixiang Zhou, Haiyan Zhong
Open Journal of Social Sciences (JSS) , 2019, DOI: 10.4236/jss.2019.71016
Abstract: Jiaju Tibetan Village, located in Danba country, Sichuan province, is a newly developed ethic tourism destination. Based on the case study of house renovation and reconstruction, this paper studies the processes of local community participating in tourism development, and analyzes the impacts of local community’s participation on forming destination image as well as destination brand. The study methods applied in this paper are building measurement, questionnaire survey and interview with villagers. The results show that villagers have focused on selecting the icons of Gyarong Tibetan culture during the process of house re-construction and presented these icons to the tourists. It is found out that local community has contributed to Jiaju village by selecting a plain destination image and building a higher quality brand. Also, villagers have improved their living environment through the house reconstruction.
Dynamic Analysis of Planar 3-RRR Flexible Parallel Robots with Dynamic Stiffening
Qinghua Zhang,Xuerui Fan,Xianmin Zhang
Shock and Vibration , 2014, DOI: 10.1155/2014/370145
Abstract: In consideration of the second-order coupling quantity of the axial displacement caused by the transverse displacement of flexible beam, the first-order approximation coupling model of planar 3-RRR flexible parallel robots is presented, in which the rigid body motion constraints, elastic deformation motion constraints, and dynamic constraints of the moving platform are considered. Based on the different speed of the moving platform, numerical simulation results using the conventional zero-order approximation coupling model and the proposed firstorder approximation coupling model show that the effect of “dynamic stiffening” term on dynamic characteristics of the system is insignificant and can be neglected, and the zero-order approximation coupling model is enough precisely for catching essentially dynamic characteristics of the system. Then, the commercial software ANSYS 13.0 is used to confirm the validity of the zero-order approximation coupling model. 1. Introduction In recent several decades, many researchers have paid more attention to the light flexible robots with high-speed, high-acceleration, and high-precision which are widely used in the assembly industry, the aerospace industry and the precision machining, and the measurement field. Essentially, the flexible parallel robots mechanism belongs to flexible multibody system. Dynamic modeling of flexible multibody system is a challenging task, in which not only rigid-flexible coupling effect must be studied but also elastic deformation coupling must be analyzed carefully. At present, dynamic modeling and control of the flexible multibody system have received considerable attention as seen in survey papers [1–4]. Unfortunately, most of published works in this area addressed the manipulators with one flexible link. Comparing with single-link flexible manipulator, two-link flexible manipulator, or four-bar linkage flexible mechanism [5, 6], the research works on the flexible parallel robots are rather few. Recently, few works have been done on dynamic modeling and control of complex mechanisms. Lee and Geng [7] developed a dynamic model of a flexible Stewart platform using Lagrange equations. Wang et al. [8–10] studied dynamic modeling and control of planar 3-Prismatic-joint-Revolute-joint-and-Revolute-joint (3-PRR) parallel robots. Zhang et al. [11, 12] studied dynamic modeling method and dynamic characteristics of planar 3-RRR flexible parallel robots. Q. H. Zhang and X. M. Zhang [13] also studied dynamic performance of planar 3-RRR flexible parallel robots under uniform temperature change. For a
Inspiration of Taoist Thought and Culture on the “New Chinese Style” Landscape Design  [PDF]
Chaoyi You, Xianmin Mai
Art and Design Review (ADR) , 2019, DOI: 10.4236/adr.2019.72007
Abstract:
It was the thousands of years of China history that gave birth to the excellent traditional ideology and culture, and in the long history the Chinese Taoism came into being and gave continuously influence and heritage. The philosophical thoughts of “let nature take its course” run through and influence all periods and fields, including the profound impact of Chinese traditional landscape closely related to nature, and the ideological pursuit of Taoist traditional culture reflected in Chinese traditional landscape. The Taoist ideological and cultural language endows the garden art with unique spiritual connotation, and the garden art endows the symbolic meaning of the essence of Taoist ideology and culture to everything, they interact with each other and develop in harmony. Therefore, this paper proposes to express spiritual culture with natural pattern in the new Chinese landscape design, explores the symbolic design expression of traditional landscape under the influence of Taoist ideology and culture, and applies it to the new Chinese landscape design to find the design ideas with spiritual connotation while inheriting the traditional ideology and culture.
Phytolith Analysis for Differentiating between Foxtail Millet (Setaria italica) and Green Foxtail (Setaria viridis)
Jianping Zhang,Houyuan Lu,Naiqin Wu,Xiaoyan Yang,Xianmin Diao
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0019726
Abstract: Foxtail millet (Setaria italica) is one of the oldest domesticated cereal crops in Eurasia, but identifying foxtail millets, especially in charred grains, and differentiating it from its wild ancestor, green foxtail (Setaria viridis), in the archaeobotanical remains, is still problematic. Phytolithic analysis provides a meaningful method for identifying this important crop. In this paper, the silicon structure patterns in the glumes, lemmas, and paleas from inflorescence bracts in 16 modern plants of foxtail millet and green foxtail from China and Europe are examined using light microscopy with phase-contrast and a microscopic interferometer. Our research shows that the silicon structure of ΩIII from upper lemmas and paleas in foxtail millet and green foxtail can be correspondingly divided into two groups. The size of ΩIII type phytolith of foxtail millet is bigger than that from green foxtail. Discriminant function analysis reveals that 78.4% of data on foxtail millet and 76.9% of data on green foxtail are correctly classified. This means certain morphotypes of phytoliths are relatively reliable tools for distinguishing foxtail millet from green foxtail. Our results also revealed that the husk phytolith morphologies of foxtail millets from China and Eastern Europe are markedly different from those from Western Europe. Our research gives a meaningful method of separating foxtail millet and green foxtail. The implications of these findings for understanding the history of foxtail millet domestication and cultivation in ancient civilizations are significant.
Involvement of tumor necrosis factor-α in the upregulation of CXCR4 expression in gastric cancer induced by Helicobacter pylori
Chenghai Zhao, Xiaomei Lu, Xianmin Bu, Ning Zhang, Wei Wang
BMC Cancer , 2010, DOI: 10.1186/1471-2407-10-419
Abstract: Expression of CXCR4, TNF-α, IL-6 and IL-1β mRNA was determined by real-time PCR. CXCR4 protein expression was detected by Western blotting. Concentrations of TNF-α, IL-6 and IL-1β in cell culture supernatants were measured using the Quantikine Elisa kit. To abrogate TNF-α expression in HGC27 cells, TNF-α RNAi plasmid was used to transfect them.Levels of CXCR4 and TNF-α mRNA were significantly higher in H. pylori-positive gastric cancers (n = 19) compared to H. pylori-negative ones (n = 15). A subsequently Spearman's rank correlation test showed there was a positive correlation between the level of CXCR4 mRNA and that of TNF-α in 34 primary gastric cancers. Other results followed: Expression of CXCR4 and TNF-α was upregulated in gastric cancer cell MKN45 and HGC27 after infection with H. pylori 26695 (cag PAI+ ) or Tx30a (cag PAI- ); The induction of CXCR4 expression by H. pylori was inhibited significantly by a neutralizing TNF-α antibody, infliximab; CXCR4 expression was upregulated in MKN45 cells after treatment with exogenous TNF-α or co-culture with macrophage, and was downregulated in HGC27 cells after transfection with TNF-α RNAi plasmid. There was a significant increase in the migration of MKN45 cells treated with H. pylori 26695, and a strong inhibition when AMD 3100, a CXCR4 antagonist, or infliximab, was added.Our findings demonstrated that H. pylori upregulates CXCR4 expression in gastric cancer through TNF-α.It is well accepted that Helicobacter pylori (H. pylori) is a strong risk factor for the development of various gastric diseases, namely chronic gastritis, peptic ulcers, gastric mucosa-associated lymphoid tissue lymphoma and gastric cancer, and it is acknowledged that the interaction between H. pylori and epithelial cells contributes to such development. In fact, H. pylori infection induces inflammation in microenvironment of the stomach associated with induction of proinflammatory cytokines, such as tumor necrosis factor-α (TNF-α), interleukin-1β (
Downregulation of SFRP5 expression and its inverse correlation with those of MMP-7 and MT1-MMP in gastric cancer
Chenghai Zhao, Xianmin Bu, Ning Zhang, Wei Wang
BMC Cancer , 2009, DOI: 10.1186/1471-2407-9-224
Abstract: Expression of SFRP5, MMP-2, MMP-7, MMP-9 and MT1-MMP was determined by real-time PCR, RT-PCR or Western blotting. The methylation status of SFRP5 was detected by Methylation-specific PCR (MSP). Cell lines with SFRP5 methylation were demethylated by a DNA methyltransferase inhibitor 5-Aza-2'-deoxycytidine (DAC). KatoIII cells were transfected with pcDNA3.1 SFRP5 vector to strengthen SFRP5 expression. To abrogate SFRP5 expression in MKN1 cells, SFRP5 RNAi plamid was used to transfect them.SFRP5 expression was remarkably downregulated in 24 of 32 primary gastric cancer specimens, and even was not detectable in 5 of 8 gastric cancer cell lines. MMP-7 and MT1-MMP mRNA showed a stronger expression in these 24 specimens compared to the other 8 specimens. They also showed higher levels in gastric cancer cell lines AGS and NCI-N87 which had no SFRP5 expression, compared to MKN1 with strong SFRP5 expression. However, they were significantly downregulated, with SFRP5 expression restored in AGS and NCI-N87; and were considerably upregulated with it abrogated in MKN1.The results indicate there are frequent occurrences of downregualtion of SFRP5 expression in gastric cancer, primarily due to SFRP5 methylation. It seems to be responsible for the upregulation of MMP-7 expression and MT1-MMP expression on the ground that they are inversely correlated with SFRP5 expression.All the five secreted glycoproteins in Secreted Frizzled-Related Protein (SFRP) family contain a cysteine-rich domain (CRD) homologous to that of Wnt receptor Frizzled proteins. It is noted that via the CRD, they compete with the Frizzled proteins for Wnt binding, interfering with Wnt signaling. Downregulation of them can lead to aberrant activation of the Wnt pathway and induce tumorigenesis. SFRP1 is particularly well known for its frequent downregulation in human tumors, mainly due to hypermethylation of SFRP1 promoter [1-3]. Other members of this family, such as SFRP2, SFRP4 and SFRP5 [4,5], were also found to
Non-Fragile Delay-Dependent Robust $H_\Infty$Control for Uncertain Systems
不确定时滞系统的时滞相关非脆弱鲁棒[[H_infty]]控制

Xiao Shenping,Wu Min,Zhang Xianmin,
肖伸平

系统科学与数学 , 2007,
Abstract: This paper is concerned with the problem of delay-dependent non-fragile Robust $H$-infinite control for uncertain systems. Based on an integral inequality method, a new delay-dependent condition, which can ensure that the closed-loop system is internally stable with a given $H$-infinite disturbance attenuation level via a non-fragile controller, is obtained by using the Lyapunov-Krasovskii stability theory. Then, the design of non-fragile $H$-infinite controller is proposed. No any parameter needs to be tuned. It can be easily solved in terms of linear matrix inequalities (LMI) in Matlab Toolbox. Finally, a numerical simulation is given to show the validity of this approach.
Using DTM to Improve the Accuracy of Detecting Coal Fires with Thermal Infrared Images
应用DTM改善煤层自燃的热红外探测

Wan Yuqing,Zhang Xianmin,
万余庆
,张祥民

遥感学报 , 1996,
Abstract: Coal fire is a commonly existed disaster in coal fields of northen China, it burnt huge amount of coal resource. Firefighting is a long-term and tough job.Thermal infrared images of TM band 6 show us temperature information, which depends on solar radiance and ground heat. Based on remote sensing principle, this paper focuses on using DTM to improve the accuracy of detecting coal fires with thermal infrared images. On the resultant image thermal anomaly caused by coal fire is much clear, this is helpful for firefighting and dynamic monitoring. Junnan coal field was selected as a test area. Several pictures were displayed for the result.
Effects of Core Self-Evaluations on the Job Burnout of Nurses: The Mediator of Organizational Commitment
Yangen Zhou, Jiamei Lu, Xianmin Liu, Pengcheng Zhang, Wuying Chen
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0095975
Abstract: Objective To explore the impact of Core self-evaluations on job burnout of nurses, and especially to test and verify the mediator role of organizational commitment between the two variables. Method Random cluster sampling was used to pick up participants sample, which consisted of 445 nurses of a hospital in Shanghai. Core self-evaluations questionnaire, job burnout scale and organizational commitment scale were administrated to the study participants. Results There are significant relationships between Core self-evaluations and dimensions of job burnout and organizational commitment. There is a significant mediation effect of organizational commitment between Core self-evaluations and job burnout. Conclusions To enhance nurses’ Core self-evaluations can reduce the incidence of job burnout.
Analysis of the Economic Influences of the Investments in China from Transnational Corporations
Xianmin Jia
International Business Research , 2010, DOI: 10.5539/ibr.v3n2p117
Abstract: The actuality of the investments of transnational corporations in China is briefly described in this article, and the influences of the investments from transnational corporations in China are analyzed from two aspects, and the result indicates that in the process of attracting foreign investments, the active influence of the investments from transnational corporations should be fully utilized, and passive influences should be treated properly.
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