http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Understanding Hospitality Industry Supplier Selection: A Cross-Cultural Study
Daewoo Park,Hema A. Krishnan,Joseph Ha 재단법인 서암순창장학회 2019 Journal of Marketing Thought Vol.5 No.4
Over the past three decades, the hospitality industry has experienced significant growth in both the US and Asia. US firms have increasingly pursued avenues for employing the business prowess of Asia and for managing strategic alliances and supply networks with their Asian partners. Likewise, Asian firms have sought to expand their presence in the US hospitality industry. Previous research studies on global cooperative strategies such as strategic alliances and supply networks have focused their attention primarily on understanding supplier selection processes in the manufacturing sectors. There are few studies on understanding cross-cultural differences between US and Asian supply chain management executives in the service industry. Without analyses of individual differences among ex-ecutives in different cultures, theories on managerial decision-making in global cooperative strategies in the hospi-tality industry remain incomplete. This study is an attempt to better understand the cross-cultural differences be-tween US and Chinese hospitality industry supplier selection practices.
Aqueous Hydrogel System of One-Dimensional Carbon Materials
Daewoo Kim(김대우) 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.1
The preparation of carbon materials based hydrogels and their viscoelastic properties are essential for their broad application and scale-up. However, existing studies are mainly focused on graphene derivatives and two-dimensional materials, and the behavior of one-dimensional (1D) materials such as graphene nanoribbon (GNR) and carbon nanotubes (CNTs) remains elusive. Poor dispersion of the 1D materials in the solvent is one of the key bottlenecks for utilizing the materials in many applications. Herein, the dispersion of the 1D materials in an aqueous system is suggested and its unique assembly behavior is systematically investigated. Particularly, we demonstrate the concentration-driven gelation of oxidized GNR (graphene oxide nanoribbon, GONR) and the GONR hydrogels exhibit viscoelastic shear-thinning behavior and can be shear-coated to form large-area GONR films on substrates. The hydrogel system also can be used
( Daewoo Lee ),( Sung Ho Kook ),( Hyeok Ji ),( Seung Ah Lee ),( Ki Choon Choi ),( Kyung Yeol Lee ),( Jeong Chae Lee ) 생화학분자생물학회(구 한국생화학분자생물학회) 2015 BMB Reports Vol.48 No.11
There are controversial findings regarding the roles of nuclear factor (erythroid-derived 2)-like 2 (Nrf2)/heme oxygenase-1 (HO-1) pathway on bone metabolism under oxidative stress. We investigated how Nrf2/HO-1 pathway affects osteoblast differentiation of MC3T3-E1 cells in response to hydrogen peroxide (H2O2), N-acetyl cysteine (NAC), or both. Exposing the cells to H2O2 decreased the alkaline phosphatase activity, calcium accumulation, and expression of osteoblast markers, such as osteocalcin and runt-related transcription factor-2. In contrast, H2O2 treatment increased the expression of Nrf2 and HO-1 in the cells. Treatment with hemin, a chemical HO-1 inducer, mimicked the inhibitory effect of H2O2 on osteoblast differentiation by increasing the HO-1 expression and decreasing the osteogenic marker genes. Pretreatment with NAC restored all changes induced by H2O2 to near normal levels in the cells. Collectively, our findings suggest that H2O2-mediated activation of Nrf2/HO-1 pathway negatively regulates the osteoblast differentiation, which is inhibited by NAC. [BMB Reports 2015; 48(11): 636-641]
Optimization Analysis of Trajectory for Re-Entry Vehicle Using Global Orthogonal Polynomial
Daewoo Lee 대한기계학회 2006 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.20 No.10
We present a procedure for the application of global orthogonal polynomial into an atmospheric re-entry maneuvering problem. This trajectory optimization is imbedded in a family of canonically parameterized optimal control problem. The optimal control problem is transcribed to nonlinear programming via global orthogonal polynomial and is solved a sparse nonlinear optimization algorithm. We analyze the optimal trajectories with respect to the performance of re-entry maneuver.