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A STUDY OF STRATEGIC ALLIANCES, MARKETING CAPABILITY, AND FIRM VALUE
Woo Li Ko,Sang Yong Kim,Jong-Ho Lee 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07
The purpose of this study is to assess the role of marketing to the area of strategic alliances. We suggest that marketing capability – the ability to deploy resources to serve customers better- is a key determinant that facilitates value creation in strategic alliances. Specifically, we investigate the interaction effects of marketing capability on performance of strategic alliance experience and types of strategic alliances (introducing three types: SI-SF alliance, AI-SF alliance and AI-DF alliance), and whether these interaction effects are moderated by high vs. low technological industry. This study analyzed the panel data from 39 international firms and their 2,158 alliances during the period 1994 - 2014, 21 firms from computer industry (high-tech industry) and 18 firms from food industry (low-tech industry), respectively. The results indicate that the contribution of marketing capability on the relationships between alliance experience, types of strategic alliances and firm value varies with environmental contexts. First, when a firm has strong marketing capability, the effect of strategic alliance experience on firm value is greater than those of firms with low marketing capability. Also, the strength of its interaction effect is lower in high-tech industry than low-tech industry. Second, when a firm has strong marketing capability, the effects of three different types of strategic alliances on firm value are greater than those of firms with low marketing capability. However, their interaction effects to firm value were significant only in high-tech industry. Specifically, when a firm has strong marketing capability, the stock market reacts most favorably to the AI-DF alliance than those of SI-SF alliance and AI-SF alliance in high-tech industry. In contrast, even a firm has strong marketing capability, the stock market reacts favorably only to AI-SF alliance in low-tech industry. In sum, our research suggests that the interactive performance impact of marketing capability to the strategic alliance experience and the types of strategic alliances can be obtained in particular environmental contexts.
THE ROLE OF TIME IN CONSUMER REACTIONS TO SCARCITY APPEAL
Woo Li Ko,Sungkyu Lee 글로벌지식마케팅경영학회 2023 Global Marketing Conference Vol.2023 No.07
This study examined the combined effects of scarcity appeals and time remaining from the travel date on attitudes toward advertising and purchase intention. The results lead to a rationale for disparate advertising strategies of scarcity appeals considering the temporal distance of a consumer's hotel booking.
Effects of BAP and NAA on Plant Regeneration from Flower Bud of Atractylodes macrocephala
Woo-Li Ko,Ji-Hui Byeon,Su-Hee Jeon,Moung-Su Kim,Joon-Hyeong Cho 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
This research was conducted to identify the effect of BAP and NAA on plant regeneration from flower bud of A. macrocephala. Flower buds the plant were used as target explants for tissue culture. Plant tissues were sterilized with each 45ml of 50% ethanol and 0.8% sodium hypochlorite containing 20ul of Tween20 for each 5 minutes, respectively, and then washed 5 times with sterile distilled water. Four pieces of the sterilized explants were cultured in a petri-dish at 25±2℃ under 16hr/day light condition. LS basal medium and BAP (0.2 and 2 mg·L-1) and NAA (0.2 and 2 mg·L-1) were used for the experiment. When the target explants were cultured on the media containing both BAP and NAA, explants of the flower buds were swelled about 15~25mm long and then calli were induced from receptacles at about 20 days after planting. However, there were no significant differences between the concentrations of the phytohormones. In results, normal shoots were successfully regenerated on the media supplemented with 2 mg·L-1 BAP and 0.2 mg·L-1 NAA prior to root induction. However, under the conditions of 0.2 mg·L-1 BAP and 2 mg·L-1 NAA, only roots were induced from the calli instead of shoot regeneration.
Li, Yan,Kim, Ryunhee,Cho, Yi Sul,Song, Woo Seok,Kim, Doyoun,Kim, Kyungdeok,Roh, Junyeop Daniel,Chung, Changuk,Park, Hanwool,Yang, Esther,Kim, Soo-Jeong,Ko, Jaewon,Kim, Hyun,Kim, Myoung-Hwan,Bae, Yong- Society for Neuroscience 2018 The Journal of neuroscience Vol.38 No.26
<P>SALM1 (SALM (synaptic adhesion-like molecule), also known as LRFN2 (leucine rich repeat and fibronectin type III domain containing), is a postsynaptic density (PSD)-95-interacting synaptic adhesion molecule implicated in the regulation of NMDA receptor (NMDAR) clustering largely based on in vitro data, although its in vivo functions remain unclear. Here, we found that mice lacking SALM1/LRFN2 (Lrfn2(-/-) mice) show a normal density of excitatory synapses but altered excitatory synaptic function, including enhanced NMDAR-dependent synaptic transmission but suppressed NMDAR-dependent synaptic plasticity in the hippocampal CA1 region. Unexpectedly, SALM1expression was detected in both glutamatergic and GABAergic neurons and Lrfn2(-/-) CA1 pyramidal neurons showed decreases in the density of inhibitory synapses and the frequency of spontaneous inhibitory synaptic transmission. Behaviorally, ultrasonic vocalization was suppressed in Lrfn2(-/-) pups separated from their mothers and acoustic startle was enhanced, but locomotion, anxiety-like behavior, social interaction, repetitive behaviors, and learning and memory were largely normal in adult male Lrfn2(-/-) mice. These results suggest that SALM1/LRFN2 regulates excitatory synapse function, inhibitory synapse development, and social communication and startle behaviors in mice.</P>
A study on flow distribution for integrated hybrid actuator by analysis of reed valve
Jangmi Woo,Nam Seo Goo,Yong Zhe Li,Seung-Hwan Kang,Han Seo Ko 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.5
Many studies have been conducted recently on an integrated hybrid actuator due to the increasing need for unmanned aircraft and guided weapons. In this study, flow distribution was analyzed for a reed valve which was used for flow regulation to improve the performance of the actuator. By using a Fluid structural interaction (FSI) technique with Computational fluid dynamics (CFD) having a moving mesh, numerical analysis was performed according to the thickness, shape and driving frequency of the reed valve. From the calculated results, the maximum performance of the reed valve was found at the valve thickness of 0.15 mm and the driving frequency of 250 Hz for a no-load state. The optimum thickness and shape for the valve for each driving frequency were also realized.
아라키돈산과 철 유도성 산화적 스트레스에 대한 김앵자(金櫻子) 열수 추출물의 간세포 보호 효능
고해리 ( Hae Li Ko ),제갈경환 ( Kyung Hwan Jegal ),송시연 ( Si Yeon Song ),김난이 ( Nan Ee Kim ),강지원 ( Jiwon Kang ),변성희 ( Sung Hui Byun ),김영우 ( Young Woo Kim ),조일제 ( Il Je Cho ),김상찬 ( Sang Chan Kim ) 대한본초학회 2015 大韓本草學會誌 Vol.30 No.6
Objectives : Rosa laevigata Michx. has been used for the treatment of renal disease in traditional Korean medicine. In this study, we investigated cytoprotective effect of R. laevigata water extract (RLE) against oxidative stress induced by arachidonic acid (AA) + iron. Methods : To evaluate the protective effects of RLE against AA + iron-induced oxidative stress in HepG2 cell, cell viability and changes on apoptosis-related proteins were assessed by MTT and immunoblot analyses. The effects of RLE on reduced glutathione level, production of reactive oxygen species and mitochondrial membrane potential were also monitored. Furthermore, to verify underlying molecular mechanism, NF-E2-related factor 2 (Nrf2) was examined by immunoblot analysis. Additionally, Nrf2 transactivation and its downstream target genes expression were also determined by reporter gene and realtime RT-PCR analyses. Results : RLE pretreatment (30-300 μg/ml) prevented cells from AA + iron-mediated cell death in a concentration dependent manner. In addition, 100 μg/ml RLE inhibited AA + iron-induced glutathione depletion, reactive oxygen species production and mitochondrial dysfunction. RLE accumulated nuclear Nrf2 and also transactivated Nrf2, which was evidenced by antioxidant response element- and glutathione S-transferase A2-driven luciferase activities and mRNA level of glutamate-cysteine ligase catalytic subunit, NAD(P)H:quinone oxidoreductase 1 and sestrin 2. Moreover, protective effect of RLE against AA + iron was abolished in Nrf2 knockout cells. Conclusions : These results indicate that RLE has the ability to protect hepatocyte against oxidative stress through Nrf2 activation.
도요타의 하이브리드 자동차 보급 사례 분석을 통한 일본 전기자동차 시장에 대한 전망
고우리,김경환,Ko, Woo Li,Kim, Kyunghwan 부산대학교 경영연구원 2024 Journal of East Asia Management Vol.5 No.1
About 100 years after the start of mass production by American car maker Ford in 1913, the automobile industry has come to a major transformation in 100 years. In this transformation period, automakers are facing the biggest challenge of converting power sources, the basis of automobiles, from existing internal combustion engines to electric vehicles. Hybrid vehicles have been released in Japan since the late 1990s, and changes in automobile power sources have occurred early. In order to gain global leadership in hybrid vehicles, Japanese automakers and the Japanese government joined forces to promote the growth of the domestic hybrid vehicle market. The government has implemented a policy to substantially subsidize the high price of hybrid cars compared to internal combustion engine cars by providing purchase subsidies and tax benefits to buyers. Toyota has increased its line-up of hybrid cars around the Prius and has further strengthened communication with customers for the sale of hybrid vehicles. As a result of continuing these efforts for about 20 years, the percentage of Japan's hybrid vehicle market in 2022 reached 51% for passenger cars. Recently, each country has been setting and promoting aggressive goals for electric vehicles that require a wider range of physical and institutional infrastructure than hybrid vehicles. This study aims to assess the growth of electric vehicles by looking at the trend of hybrid vehicles and how they've been distributed in the Japanese market.
Autologous fat grafting and platelet-rich plasma for treatment of facial contour defects
( Eun Jung Ko ),( Sun Young Choi ),( In Su Kim ),( Woo Sun Jang ),( Kui Young Park ),( Kap Sok Li ),( Beom Joon Kim ),( Seong Jun Seo ),( Myeung Nam Kim ),( Chang Kwun Hong ) 대한피부과학회 2012 대한피부과학회 학술발표대회집 Vol.64 No.1
Effect of Conversion to CTLA4Ig on Tacrolimus-Induced Diabetic Rats
Jin, Long,Lim, Sun Woo,Jin, Jian,Luo, Kang,Ko, Eun Jeong,Chung, Byung Ha,Lin, Hong Li,Yang, Chul Woo Wolters Kluwer Health, Inc. All rights reserved. 2018 Transplantation Vol.102 No.4
<P>Conclusions CTLA4Ig was not diabetogenic, and conversion to CTLA4Ig reduced TAC-induced pancreatic islet injury.</P>