Design and theoretical analysis of a sliding valve distribution radial piston pump

Guo Tong,Zhao Shengdun,Yu Yanghuiwen,Shang Peng 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.1

A Sliding valve distribution radial piston pump (SVDRPP) is presented. In this pump, a new distribution method that uses slidingvalves to distribute oil for the piston chambers is developed. With this design, the disadvantages brought by the distribution shaft and thecheck valves (traditional distribution mechanisms), such as the poor stress state of the shaft and the energy waste for opening the checkvalves, are expected to be eliminated. In addition, a method of using pressure oil to accomplish the returning stroke of the piston is alsoproposed, which could be used to replace the usage of springs along with their shortcomings. A pump with five pistons is designed as anexample to elaborate the structure and the working principle of SVDRPP. Furthermore, the flow characteristics of SVDRPP are studied,and the formulas of the displacement, the average flow rate and the instantaneous flow rate are deduced.

Analysis of decimation techniques to improve computational efficiency of a frequency-domain evaluation approach for real-time hybrid simulation

Guo, Tong,Xu, Weijie,Chen, Cheng Techno-Press 2014 Smart Structures and Systems, An International Jou Vol.14 No.6

Accurate actuator tracking is critical to achieve reliable real-time hybrid simulation results for earthquake engineering research. The frequency-domain evaluation approach provides an innovative way for more quantitative post-simulation evaluation of actuator tracking errors compared with existing time domain based techniques. Utilizing the Fast Fourier Transform the approach analyzes the actuator error in terms of amplitude and phrase errors. Existing application of the approach requires using the complete length of the experimental data. To improve the computational efficiency, two techniques including data decimation and frequency decimation are analyzed to reduce the amount of data involved in the frequency-domain evaluation. The presented study aims to enhance the computational efficiency of the approach in order to utilize it for future on-line actuator tracking evaluation. Both computational simulation and laboratory experimental results are analyzed and recommendations on the two decimation factors are provided based on the findings from this study.

习近平文化思想三维审思: 理论之源·历史之脉·现实之基

行国通(Guotong Xing) YIXIN 출판사 2024 Journal of China Studies Vol.2 No.3

习近平文化思想是马克思主义在文化领域发展的最新成果,是新时代我国文化建设的行动指南。 深入学习习近平文化思想,必须正确认识习近平文化思想的理论之源、历史之脉和现实之基。就其理论之源而言,习近平文化思想以马克思主义文化理论为“魂脉”,以中华优秀传统文化为“根脉”,以人类优秀文明成果为镜鉴;就其历史之脉而言,习近平文化思想一脉相承于新民主主义革命时期党的文化思想,继承发展于社会主义革命和建设时期党的文化思想,接续延展于改革开放和社会主义现代化建设新时期党的文化思想,凝练升华于新时代以来党的文化思想;就其现实之基而言,习近平文化思想的形成离不开中国国民综合素质的显著提升、社会文明程度的不断提高和国家文化软实力的稳步增长。 Abstract: Xi Jinping Thought on Culture is the latest achievement of the development of Marxism in the cultural field and the action guide of China's cultural construction in the new era. In order to deeply study Xi Jinping Thought on Culture, we must correctly understand the theoretical source, historical vein and realistic foundation of Xi Jinping Thought on Culture. As far as the source of its theory is concerned, Xi Jinping Thought on Culture takes Marxist cultural theory as the “soul”, Chinese excellent traditional culture as the “root”, and the excellent achievements of human civilization as the mirror. In terms of its historical vein, Xi Jinping Thought on Culture comes down in a continuous line from the CPC’s cultural thought in the period of the new-democratic revolution, inherits and develops the CPC’s cultural thought in the period of socialist revolution and construction, continues to extend the CPC’s cultural thought in the new period of reform, opening up, and socialist modernization, and succinctly sublimates the CPC’s cultural thought since the new era. As far as the basis of its reality is concerned, the formation of Xi Jinping Thought on Culture is inseparable from the significant improvement of the comprehensive quality of Chinese people, the continuous improvement of social civilization and the steady growth of national cultural soft power.

Efficient LDPC Encoding for High Order Modulation

Xuehong Lin,Guotong Geng,Weiling Wu 한국통신학회 2005 한국통신학회 학술대회 및 강연회 Vol.2005 No.4

Ultrasound-assisted extraction of resveratrol from grape leaves and its purification on mesoporous carbon

Hui Sun,Qiang Lin,Wei Wei,Guotong Qin 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.5

Resveratrol has been extracted from grape leaves by ultrasound-assisted extraction with aqueous ethanol and further concentrated on a column of mesoporous carbon. The ethanol concentration, extraction temperature, solid/ liquid ratio, and extraction time have been investigated, and the extraction kinetics has been studied. After one treatment run with mesoporous carbon, the resveratrol purity was improved from 2.1 to 20.6%. The antioxidant activities of grape leaf extracts before and after concentration have been analyzed. Mesoporous carbon has been applied in the purification of resveratrol from grape leaves for the first time, and it is shown to offer a promising procedure in this field. Grape leaf is a promising material for the extraction of resveratrol, which shows antioxidant properties.

Researth on Factors Affecting Employees' Security Behavior Based on Structural Equation Model

Yanna Zhu,Gang He,Xianfei Zhu,Guotong Qiao,Guisheng Zhang,Lianwei Heng 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.8

新时代高校培养好青年的路径探究

张雯雯(Wenwen Zhang),张泽琪(Zeqi Zhang),行国通(Guotong Xing) YIXIN 출판사 2024 教育教学研究论丛 Vol.2 No.3

青年是国家的希望,民族的未来。培养新时代好青年具有重大的意义,培养新时代好青年有利于高校青年自身素质提高、有利于青年勇于担当历史使命和推动民族复兴。因此高校应以培养新时代理想者、新时代担当者、新时代吃苦者和新时代奋斗者为目标和主要内容。但高校在培养青年过程中存在着诸多问题。为此,高校应形成协同发展的培育模式、建立结构完备的培育机制和健全网络培养体系。高校对新时代好青年的培育有助于增强中国青年的历史使命感和责任感,对党和国家未来的发展和社会主义建设起着重大而深远的意义。 Youth is the hope of a country and the future of a nation. Training good young people in the new era is of great significance, which is conducive to improving the quality of young people in colleges and universities, helping young people to take up the historical mission and promote national rejuvenation. Therefore, colleges and universities should take the training of the new era ideal, the new era of responsibility, the new era of hardship and the new era of strugglers as the goal and main content. But there are many problems in the process of training young people. Therefore, colleges and universities should form the cultivation mode of cooperative development, set up a well-structured cultivation mechanism and perfect network training system. The cultivation of good young people in colleges and universities in the new era helps to enhance the sense of historical mission and responsibility of Chinese youth, and plays a significant and far-reaching significance for the future development of the Party and the country and the construction of socialism.

An Intrusion Prevention Technology Based on Dynamic Random Password Authentication in Wireless Sensor Networks

Gang He,Yanna Zhu,Guisheng Zhang,Guotong Qiao 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.12

Security is an important problem in wireless sensor networks. Intrusion detection system is one of the most common methods of network security, for which more and more people have shown solicitude. In this paper, a dynamic random password authentication (DRPA) method is proposed for the identity authentication of communication nodes, which can detect and prevent malicious behavior at each stage of the network operation. This paper introduces the method of automatic generation of random passwords. When a user wants to communicate, the password will be verified to confirm whether it is a normal user or a malicious user. The password’s generation and verification process is very suitable for wireless sensor networks. By using NS2, the simulation experiments are carried out and the results show that this method is superior to the other methods.

Glia maturation factor beta deficiency protects against diabetic osteoporosis by suppressing osteoclast hyperactivity

Shi Si,Gu Huijie,Xu Jinyuan,Sun Wan,Liu Caiyin,Zhu Tong,Wang Juan,Gao Furong,Zhang Jieping,Ou Qingjian,Jin Caixia,Xu Jingying,Chen Hao,Li Jiao,Xu Guotong,Tian Haibin,Lu Lixia 생화학분자생물학회 2023 Experimental and molecular medicine Vol.55 No.-

Excessive osteoclast activation, which depends on dramatic changes in actin dynamics, causes osteoporosis (OP). The molecular mechanism of osteoclast activation in OP related to type 1 diabetes (T1D) remains unclear. Glia maturation factor beta (GMFB) is considered a growth and differentiation factor for both glia and neurons. Here, we demonstrated that Gmfb deficiency effectively ameliorated the phenotype of T1D-OP in rats by inhibiting osteoclast hyperactivity. In vitro assays showed that GMFB participated in osteoclast activation rather than proliferation. Gmfb deficiency did not affect osteoclast sealing zone (SZ) formation but effectively decreased the SZ area by decreasing actin depolymerization. When GMFB was overexpressed in Gmfb-deficient osteoclasts, the size of the SZ area was enlarged in a dose-dependent manner. Moreover, decreased actin depolymerization led to a decrease in nuclear G-actin, which activated MKL1/SRF-dependent gene transcription. We found that pro-osteoclastogenic factors (Mmp9 and Mmp14) were downregulated, while anti-osteoclastogenic factors (Cftr and Fhl2) were upregulated in Gmfb KO osteoclasts. A GMFB inhibitor, DS-30, targeting the binding site of GMFB and Arp2/3, was obtained. Biocore analysis revealed a high affinity between DS-30 and GMFB in a dose-dependent manner. As expected, DS-30 strongly suppressed osteoclast hyperactivity in vivo and in vitro. In conclusion, our work identified a new therapeutic strategy for T1D-OP treatment. The discovery of GMFB inhibitors will contribute to translational research on T1D-OP.