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Jie Wu,Zefu Wu 글로벌지식마케팅경영학회 2016 Global Marketing Conference Vol.2016 No.7
We integrate institutional theory and the resource-based view of capability to examine the interplay of institutional environments and firm-specific capabilities on value-creating synergy by emerging market firms (EMFs). We argue that EMFs expand into countries with better-developed institutions as a means to overcome poor institutions at home. EMFs that develop strong absorptive capacity and knowledge transfer capability are better able to benefit from a portfolio of complementary sources of knowledge across multiple markets. We analyze data on a sample of manufacturing firms’ international expansion to demonstrate that expansion into a host country with a better-developed institutional environment promotes innovation success. This effect was found to be stronger for firms with strong absorptive capacity and well-developed knowledge transfer capability.
( Wu Jie Su ),( Yan Wu ),( Hui Ling Wu ),( Wen Bing Wang ) 한국잠사학회 2007 International Journal of Industrial Entomology Vol.15 No.2
Open reading frame 4 of Bombyx mori nucleopolyhedrovirus (BmNPV), designated as Bm4, is a gene whose function is completely unknown. With the recently developed BmNPV bacmid and a modified pFastBac1 whose polyhedrin promoter was replaced with ie1 promoter, a recombinant bacmid expressing Bm4-EGFP fusion protein under the control of ie1 promoter in BmN cells was successfully constructed. The result not only showed that the polyhedrin promoter can be replaced efficiently with other promoters to direct the expression of foreign gene in BmN cells by using Bac-to-Bac/BmNPV baculovirus expression system but also laid the foundation for rescue experiment of Bm4 deletion mutant due to the ability of ie1 promoter to direct gene expression throughout the infection cycle.
Predicting drying shrinkage of steel reinforced concrete columns with enclosed section steels
Jie Wu,Xiao Wei,Xiaoqun Luo 국제구조공학회 2023 Steel and Composite Structures, An International J Vol.47 No.4
Owing to the obstruction of section steel on the moisture diffusion in concrete, the existing shrinkage prediction models overestimate the time-dependent deformation of steel reinforced concrete (SRC) columns, particularly for the SRC columns with enclosed section steels. To solve this issue, this study deals with analytical and experimental studies on the drying shrinkage for this type of column. First, an effective method for predicting the drying shrinkage of concrete based on finite element model is introduced and two crucial parameters for simulation of humidity field are determined. Then, the drying shrinkage of SRC columns with enclosed section steels is investigated and two modified parameters, which depend on the ambient relative humidity and the ratio of section steel size to column size, are introduced to the B3 model. Finally, an experiment on the shrinkage deformation of SRC columns with enclosed section steels is conducted. Comparing the predicted results with the experimental ones, it demonstrates that the modified B3 model is quite reasonable.
Assessment and Management ofPostmenopausal Osteoporosis in China
Jie Wu,Qinjie Tian 대한골다공증학회 2010 Osteoporosis and Sarcopenia Vol.8 No.2
Considering the aging population, longer life expectancy, and many dramatic changes in people’s lifestyles during recent years in China, although the prevalence of postmenopausal osteoporosis in China remains lower than that of other industrialized countries, future studies are needed and more effort should be made to increase Chinese people’s awareness regarding osteoporosis and to promote good bone health.
Achieving fixed-time synchronization of the Kuramoto model via improving control techniques
Wu Jie,Liu Mingqi,Wang Xiaofeng,Ma Ru-ru 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.79 No.11
This paper further analyzes the fixed-time (FxT) phase agreement (PA) and the frequency synchronization (FS) of the Kuramoto model with identical and non-identical oscillators, respectively. The non-chattering control protocol is carefully picked to overcome the deficiency of the signum function contained in the conventional finite-time (FT)/FxT controllers, which improves the synchronized performance of networked systems. Furthermore, for reducing control cost, the switching control scheme is taken into consideration. Through the utilization of FxT stability theory, several sufficient conditions are derived successively for achieving the FxT PA and FS, in which the upper bound time estimates for arriving at PA and FS are given regardless of the initial states of the Kuramoto model. Finally, some simulation results lead to the conclusion that the proposed theoretical analysis is correct and effective.
Stochastic fixed-time synchronization of chaotic systems via smooth control
Jie Wu,Xiaofeng Wang,Ru-ru Ma 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.9
This paper is concerned with the fixed-time synchronization of two chaotic systems, and further takes the stochastic noise into consideration. A novel smooth control protocol is developed to overcome the chattering problem caused by the signum function contained in the conventional finite/fixed-time controllers. In the light of the (stochastic) fixedtime stability theory, the sufficient conditions are derived for achieving the (stochastic) fixedtime synchronization of two chaotic systems, in which the upper bound of synchronization time can be estimated in advance. Finally, two classical chaotic systems are used to verify the validity of proposed theoretical results, which shows that fixed-time synchronization of chaotic systems is robust to noise perturbation.
Jie Cheng,Xisheng Zhan,Jie Wu,Huaicheng Yan 제어·로봇·시스템학회 2024 International Journal of Control, Automation, and Vol.22 No.1
In this paper, the adaptive bipartite output containment problem is investigated, for a signed graph of heterogeneous multi-agent systems (HMASs). An adaptive state feedback algorithm and an output feedback algorithm are designed to ensure that cooperative and antagonistic agents enter different convex hull. A novel protocol is proposed for heterogeneous systems to deal with the bipartite output containment problem, where only the leader’s neighbours can learn the leader’s system matrix without all followers. Then, based on output regulation approach, Lyapunov stability analysis and some other methods guarantee that the bipartite output containment control problem is implemented. Finally, the validity of our analytical results is verified by the numerical simulations provided.
Facile and Eco-Friendly Preparation of GO/BIIR Composite for Gas Barrier Applications
Jie Wu,Qin He,Yingjun Li,Dongliang Liu,Yuanlin Zhou 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.2
Owing to weak interfacial bonding and incompatibility between graphene and polymer, there are several challenges in the fabrication of graphene-based polymer composites with an effective gas barrier. Hence, it is necessary to enhance the affinity between polymers and graphene. We selected graphene oxide (GO) as filler and brominated butyl rubber (BIIR) as a substrate to prepare GO/BIIR composites via the simple latex mixed route. The tortuous path of diffusion of helium molecules is extended after insertion of GO nanosheets, thus improving the gas barrier of composites. GO/BIIR composite with the GO content of 0.3 wt.% exhibits favorable barrier efficiency to helium with a helium gas transmission rate of 12.79 cm3 cm m -2 day -1 bar -1.