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Resources and Performance of International Joint Ventures in China
Zhan Wu,Changsu Kim,Krishna Erramilli 한국인사ㆍ조직학회 2008 한국인사ㆍ조직학회 발표논문집 Vol.- No.-
Drawing on the resource-based view and organizational learning theory, this study examines the effect of resources and capabilities on IJV performance. Unlike extant research which largely assumes a bipartite relationship, the present study views an IJV as representing a tripartite relationship involving the IJV, its foreign parent and its local parent. Accordingly, it examines the effect of resources contributed by both ‘foreign’ and ‘local’ parents. It also examines the moderating role of IJV’s absorptive capacity on the relationship between resources acquired from the two parents and the performance of the IJV. Results from a survey of IJVs in China provide support for the argument regarding complementary resource contributions, absorptive capacity, and their impact on IJV performance. Performance of the IJVs seems to be driven by the complementary resources of partner firms in combination with absorptive capacity of IJV.
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Zhanwu Li,Wenjun Wang,Xiaozhou Wang,Lei Jiang,Fengyi Wang,Qiang Liu 대한외과학회 2017 Annals of Surgical Treatment and Research(ASRT) Vol.93 No.3
Purpose: To investigate the effects of a sustained-released mixture of vascular endothelial growth factor 165 (VEGF165) and fibrin glue (FG) local administration on postoperative rabbit ileal anastomoses. Methods: One hundred twenty-eight male and female New Zealand white rabbits underwent intraperitoneal infection subsequent ileal anastomosis surgery were divided randomly into 4 groups, including 32 animals in each, applied with saline solution, FG, rhVEGF165 and a mixture of rhVEGF165 with FG (VEGF + FG) on the anastomoses, respectively. The incidences of anastomotic leakage were observed. Histopathological examination for inflammatory infiltration, fibroblast proliferation, and capillary vascular proliferation were performed. Then, bursting pressure and hydroxyproline concentrations were assessed in anastomoses sits on postoperative days 3, 5, 7, and 14. Results: Rabbits in VEGF + FG group had the lowest incidence of leakage (P < 0.05). Histological evaluations revealed that granulation tissue was formed on days 5 after anastomosis; fibroblast proliferation and capillary vascular proliferation were significantly increased on days 7 and 14 in VEGF + FG group. Furthermore, there was a statistically significant difference in the mean bursting pressures between VEGF + FG group and other groups on days 7 and 14 (P < 0.05), and rabbits in VEGF + FG group exhibited a higher concentration than VEGF group (P < 0.05) and FG group (P < 0.05) on day 14. Conclusion: Administration of VEGF165 mixed with FG to ileal anastomosis accelerates wound healing and enhances the anastomosis by increased angiogenesis.
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Qingyu Wu,Qiushneg Li,Xiangyun Hu,Zhanwu Lu,Wenhui Li,Xiaoran Wang 한국지질과학협의회 2023 Geosciences Journal Vol.27 No.2
Internal structure imaging of the Earth, along with determining basin structure, can aid in evaluating potential seismic hazards. However, the high operating cost limits the current geophysical exploration methods; moreover, it is difficult to apply these techniques over a large area, which limits our understanding of the Quaternary structure and the development of earthquake prevention science. A combination of dense array observation technology and ambient noise surface wave tomography is being rapidly developed as a high-resolution urban detection method. Here, we report the ambient noise imaging results of a high-density array experiment. In the ambient noise surface wave tomography method (e.g., surface wave tomography; Eikonal tomography), the signal is assumed to be a single mode. However, several multimode signals were detected in this dataset. With the use of traditional methods to measure the dispersion, mode confusion occurs and the extracted dispersion curve jumps. To solve this problem, by combining the advantages of phase-matched filtering and dispersion compensation, we realized the automatic pickup of fundamental group velocity using reference phase velocity. From this, a Rayleigh wave group velocity map was obtained. The regional average phase velocity information was included in the inversion steps to reduce the uncertainty in the inversion of shear wave velocity. Finally, an S-wave velocity structure model was obtained within a depth of 500 m. The velocity structure was roughly layered and grew with depth. In the depth range of 240–320 m, obvious decreases in the S-wave velocity were observed. Compared with geothermal drilling data, this was speculated to be the reflection of a water-rich (confined water) sand layer. This study provides a technical approach for and a processing example of a high-density array, and its velocity model can be used as a reference for urban subsurface structure, underground space utilization, and earthquake disaster prevention and control.
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Amr Abdelkhalek,Safaa S. M. Ali,Zhanwu Sheng,Lili Zheng,Mohamed Hasanin 한국섬유공학회 2022 Fibers and polymers Vol.23 No.5
In the present study, we investigated the lead ions removal on the solid form (as strips) by adsorption on greencellulosic fiber/polyacrylamide (GCFP). Strips were prepared in a solid form, not a hydrogel, for performing the adsorptionprocess without squandering of water. Then, the prepared film and its original materials were characterized using attenuatedtotal reflection infrared spectroscopy (ATR-FTIR), and scanning electron microscopy with energy dispersive electronspectroscopy (SEM-EDX). The experiments were conducted under different operating conditions, such as contact time,initial Pb concentration, adsorbent dose, and pH value. The adsorption process mechanism was tested by applying twokinetic models to the experimental data, which are the pseudo-first order and the pseudo-second order, and intraparticlediffusion models. The equilibrium results were fitted to three isotherm models, namely Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) models. We found a Pb removal yield of 98 % (approximately 128 mg/g) at pH=7, an adsorbent doseof 0.4 g, an initial Pb concentration of 50 ppm, and a contact time of 60 min. The kinetic study results showed that thepseudo-second-order kinetic model provided superior correlation for the adsorption of Pb ions. Moreover, Dubinin-Radushkevich isotherm model had better-fit adsorption data. The obtained results revealed the high efficiency of GCFPfilms in lead ions adsorption from water. Additionally, the components of these films, represented here by banana pseudostemwaste, are green sources, inexpensive and easy to obtain, whereas this waste is a burden on the farmers due to itsdifficult disposal.
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