Panax Ginseng in the treatment of Alzheimer’s disease and vascular dementia

Zhiyong Wang,Zhen Zhang,Jiangang Liu,Mingdong Guo,Hao Li 고려인삼학회 2023 Journal of Ginseng Research Vol.47 No.4

Research of Automatic Recognition Double Layers Intrusion Intention Algorithm Based on Attack Graph

Wang Guangze,Wang Peng,Luo Zhiyong,Zhu Suxia 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.3

The determination of network equipment weaknesses and the discovery of intrusion intention is one of the difficulties that troubled network security management personnel. Based on previous studies, further proposed a double attack graph based on domain-equipment. By the underlying network topology data collected and analyzed, using Bayesian theory to complete the quantify for the double attack graph and generation strategy in minimal power key set, with the cost of calculation of key equipment in the automatic recognition network topology, we provide an important basis for network maintenance. Experimental results show that the measure of using quantitative domain-equipment double attack graph to recognize the intrusion intention is not only effective and feasible, but also has the feature of easy promotion.

The Track and Development Trend of Competency Research — Bibliometric Analysis Based on China HowNet —

Wang Zhiyong,Jia Zhe 한중경제문화학회 2020 한중경제문화연구 Vol.14 No.-

Polyetheretherketone implants with hierarchical porous structure for boosted osseointegration

Zhiyong Chen,Yu Chen,Yang Wang,JiaJia Deng,Xin Wang,Qingqing Wang,Yuehua Liu,Jiandong Ding,Lin Yu 한국생체재료학회 2023 생체재료학회지 Vol.27 No.00

Background Good osseointegration is the key to the long-term stability of bone implants. Thermoplastic polyetheretherketone (PEEK) has been widely used in orthopedics; however, its inherent biological inertia causes fibrous tissue to wrap its surface, which leads to poor osseointegration and thus greatly limits its clinical applications. Methods Herein, we developed a facile yet effective surface modification strategy. A commonly used sulfonation coupled with “cold pressing” treatment in the presence of porogenic agent formed a three-dimensional hierarchical porous structure on PEEK surface. Subsequently, the effects of porous surface on the in vitro adhesion, proliferation and differentiation of rat bone marrow-derived mesenchymal stem cells (BMSCs) were evaluated. Finally, the osteoinduction and osseointegration of surface-porous PEEK implant were examined in the rat distal femoral defect model. Results In vitro results showed that the surface modification did not significantly affect the mechanical performance and cytocompatibility of PEEK substance, and the porous structure on the modified PEEK substrate provided space for cellular ingrowth and enhanced osteogenic differentiation and mineralization of BMSCs. In vivo tests demonstrated that the surface-porous PEEK implant could effectively promote new bone formation and had higher bone-implant contact rate, thereby achieving good bone integration with the surrounding host bone. In addition, this modification technique was also successfully demonstrated on a medical PEEK interbody fusion cage. Conclusion The present study indicates that topological morphology plays a pivotal role in determining implant osseointegration and this facile and effective modification strategy developed by us is expected to achieve practical applications quickly.

Joint Adaptive Combining and Variable Tap-Length Multiuser Detector for Underwater Acoustic Cooperative Communication

( Zhiyong Liu ),( Yinghua Wang ),( Lizhong Song ),( Yinyin Wang ),( Fusheng Dai ) 한국인터넷정보학회 2018 KSII Transactions on Internet and Information Syst Vol.12 No.1

In this paper, we propose a joint adaptive combining and variable tap-length multiuser detector (MUD) for amplify-and-forward (AF) underwater acoustic cooperative interleave-division multiple access (IDMA) communication system. The proposed MUD jointly realizes tap-length adjustment, adaptive combining, and multiuser detection. In contrast to the existing methods, the proposed detector can adaptively combine the received signals from different nodes at destination, and does not need the assumption that full and perfect channel state information (CSI) of all the links at the receiver is known. Moreover, the proposed detector can adaptively adjust the tap coefficient vector and tap-length of each branch according to the specific channel profile of each branch. Simulation results validate the feasibility and show the advantages of the proposed detector against existing counterparts.

Use Big Data to Analyze Changes in Chinese’ Perception of Baseball after three Major Mega Sport Events

Zhiyong Wang(왕지용) 한국체육과학회 2023 한국체육과학회지 Vol.32 No.6

Purpose: The purpose of this study is to provide useful information to Chinese baseball marketing by applying big data analysis technology in the field of baseball. Method: Based on this, Data analysis periods were selected from the years 2008,2014 and 2022, big data tool “Textom” was used to collect keywords related to Baseball+Beijing Olympics, Baseball+Asian game, and Baseball+WBC on popular websites. The keywords were collected to examine the relevance and clustering of major keywords related to Chinese baseball. The collected keywords were analyzed using data cleaning and matrix analysis. In order to visualize the quantified data, we used the NetDraw function of Ucinet 6.0 to visualize the network of words related to Chinese baseball. Results: First, the results of the frequency analysis of the resulting words based on keywords, 2008 Sports, Niche, Beijng Olympic, 2014 Baseball, Sports, Game, 2022 Baseball, Policy, Support. Second, the result of conducting Matrix analysis by collecting the result words that appeared specifically based on keywords, 2008 Players, League, Market, 2014 Government, Support, Policy, Rules, Elementary, 2022 Challenge, Cooperation, Management, Financial, and Directions. Conclusion: Based on the results of this study, the development of Chinese baseball was identified through keywords for 3 years. Therefore, Chinese baseballs development first has to be supported by the Chinese governments policy, because the sport in China is developed under the national system. Afterward, strengthen policy support in baseball, increase financial investment, enhance talent training, and strengthen international cooperation to promote the rapid development of baseball in China, furthermore accelerate the rise of baseball marketing in China.

Research on Social Capital Management of Chinese Cultural Enterprise Government : Taking the development history of Rongbaozhai as an example

Wang, Zhiyong,Chen, Shuang,Song, Jaehoon 한국전문경영인학회 2019 한국전문경영인학회 학술대회 발표논문집 Vol.2019 No.04

Transfer Model Based on State of Finite Semi-Markov Automata Intrusion Tolerance

Wang Guangze,Wang Peng,Luo Zhiyong,Zhu Suxia 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.3

Existing network security technology may not against most of intrusion so that we need to study intrusion tolerance technology. On the basis of existing model of intrusion tolerance, we putted forward an optimization of finite automata state transition model in intrusion tolerance system by adding strategy and updating status. Since the conversion process between the states of the model meets Semi-Markov theory, therefore, the model can be used to quantify this theory; it gives calculation process of the steady probability by each state. By stabilizing the probabilistic analysis of each state, provide theoretical guidance and basis for network management personnel to better maintain network security .Proven, the Semi-Markov applied to finite automata intrusion tolerant system is feasible, effective, and has simple features.

Effect of High-Energy Electro-Pulses on the Compression Deformation Behavior of Ti-6Al-4V Alloy

Zhiyong Zhao,Hongliang Hou,Ning Zhang,Yanling Zhang,Yaoqi Wang,Guofeng Wang 대한금속·재료학회 2016 METALS AND MATERIALS International Vol.22 No.4

Compression tests of Ti–6Al–4V alloy were conducted using an electron universal testing machine with discharge voltages that range from 50 V to 70 V and strain rate of 0.01 s −1 . Isothermal compression at equivalent temperatures was also performed on a universal testing machine with furnace, with the same strain rate. Results show that the deformability of Ti–6Al–4V alloy can be significantly improved by high-energy electro-pulses, and the deformation resistance and yield stress were also decreased. Moreover, the effect of high-energy electropulses on compression mechanical properties of Ti–6Al–4V alloy increased with increasing discharge voltage. However, elongation and deformation resistance of compressions with high-energy electro-pulses were higher than isothermal compressions at equivalent temperatures. This result proved that the deformability improvement of Ti–6Al–4V alloy by high-energy electro-pulses results from the joint effects of temperature and electro-plasticity. Fracture modes in different experimental conditions were analyzed by observing the fracture morphologies of specimens by using a scanning electron microscope. Under high-energy electro-pulses, the micro morphology of compression fracture changes from elongated oval to equiaxed dimples, and the fracture modes transfer from intergranular to transgranular fracture.

Wind resistance performance of a continuous welding stainless steel roof under static ultimate wind loading with testing and simulation methods

DaYang Wang,Zhendong Zhao,Tong Ou,Zhiyong Xin,Mingming Wang,Yongshan Zhang 한국풍공학회 2021 Wind and Structures, An International Journal (WAS Vol.32 No.1

Ultrapure ferritic stainless steel provides a new generation of long-span metal roof systems with continuous welding technology, which exhibits many unknown behaviors during wind excitation. This study focuses on the wind-resistant capacity of a new continuous welding stainless steel roof (CWSSR) system. Full-scale testing on the welding joints and the CWSSR system is performed under uniaxial tension and static ultimate wind uplift loadings, respectively. A finite element model is developed with mesh refinement optimization and is further validated with the testing results, which provides a reliable way of investigating the parameter effect on the wind-induced structural responses, namely, the width and thickness of the roof sheeting and welding height. Research results show that the CWSSR system has predominant wind-resistant performance and can bear an ultimate wind uplift loading of 10.4 kPa without observable failures. The welding joints achieve equivalent mechanical behaviors as those of base material is produced with the current of 65 A. Independent structural responses can be found for the roof sheeting of the CWSSR system, and the maximum displacement appears at the middle of the roof sheeting, while the maximum stress appears at the connection supports between the roof sheeting with a significant stress concentration effect. The responses of the CWSSR system are greatly influenced by the width and thickness of the roof sheeting but are less influenced by the welding height. Ultrapure ferritic stainless steel provides a new generation of long-span metal roof systems with continuous welding technology, which exhibits many unknown behaviors during wind excitation. This study focuses on the wind-resistant capacity of a new continuous welding stainless steel roof (CWSSR) system. Full-scale testing on the welding joints and the CWSSR system is performed under uniaxial tension and static ultimate wind uplift loadings, respectively. A finite element model is developed with mesh refinement optimization and is further validated with the testing results, which provides a reliable way of investigating the parameter effect on the wind-induced structural responses, namely, the width and thickness of the roof sheeting and welding height. Research results show that the CWSSR system has predominant wind-resistant performance and can bear an ultimate wind uplift loading of 10.4 kPa without observable failures. The welding joints achieve equivalent mechanical behaviors as those of base material is produced with the current of 65 A. Independent structural responses can be found for the roof sheeting of the CWSSR system, and the maximum displacement appears at the middle of the roof sheeting, while the maximum stress appears at the connection supports between the roof sheeting with a significant stress concentration effect. The responses of the CWSSR system are greatly influenced by the width and thickness of the roof sheeting but are less influenced by the welding height