김창수 교수

We model the firm's decision to invest in liquid assets when external financing is costly. The optimal amount of liquidity is determined by a tradeoff between the low return earned on liquid assets and the benefit of minimizing the need for costly external financing. The model predicts that the optimal investment in liquidity is increasing in the cost of external financing, the variance of future cash flows, and the return on future investment opportunities, while it is decreasing in the return

Conclusions: A transient increase in particulate matter was associated with increased suicide risk, especially for individuals with preexisting cardiovascular disease.

본 연구는 어떤 특성을 가진 기업이 사회적 책임 활동에 적극적인가, 그리고 기업의 사회적 책임 활동이 기업가치 증가에 기여하는가를 분석한다. 사회적 책임 활동을 수행하는 기업들의 특성으로는, 업력이 길고 사업 분야가 다각화 되어 있으며 코스피200 지수에 포함되어 있고 수익성과 성장성이 높은 기업들, 그리고 지배구조가 양호한 기업들이 CSR 활동을 할 가능성이 높다. 기업의 CSR 활동이 기업가치에 미치는 영향에 대해서는 내생성 문제를 교정한 모형으로 분석한 결과 사회적 책임 활동을 하는 기업의 가치가 그렇지 않은 기업의 가치보다 높다는 것을 확인할 수 있었다. 이는 CSR 활동이 단기적으로는 비용 요인이기도 하지만 기업의 명성을 높이고 이로 인해 매출을 증가시키며 장기적으로 비용을 낮추는 긍정적 측면이 있다는 것을 시사한다. 또한 사회적 책임 활동으로 인한 기업 가치의 증가 정도가 당해 기업의 지배구조에 따라 차이가 나는가를 분석하였는데, 대규모 지분 보유자의 지분과 최대주주 지분

<b>Background/Aim:</b> Given a fast-growing aging population in South Korea, the prevalence of cognitive impairment in elderly is increasing. Despite growing evidence of air pollution exposure as one of the risk factors for declining cognition, few studies have been conducted on gender difference in the relation of cognitive function associated with outdoor air pollution. The aim of this study is to investigate the effect modification of gender difference in the association between cognitive fun

Purpose This study aims to examine how the modern marketing expectation of treating the customer like a king can become a source of power differential in societies that already have a predisposition for hierarchical structures. The authors explore how this marketing-generated power differential might have an adverse impact on service providers in Eastern cultures with high power distance. Design/methodology/approach Four studies involving receivers and providers of services in Canada and South K

Endothelial cell migration is an important process that occurs during embryonic vasculogenesis and angiogenesis, wound healing, and tumor growth and metastasis, and after denudation injury following angioplasty and bypass grafting. Mechanisms regulating this process involve a complex interplay of cytoskeletal reorganization, cell-cell adhesion, and cell-extracellular matrix interactions. Platelet endothelial cell adhesion molecule-1 (PECAM-1/CD31) is constitutively expressed in endothelial cells

This study uses the balanced scorecard(BSC) framework to assess the business performance of information technology (IT) expenditures in the Korean banking industry. The relationship between IT expenditures and bank’s financial performance or market share was significantly different depending upon the level of IT. For banks that maintain high IT level, IT expenditures appear to have (1) increased labor productivity, (2) decreased payroll expenses and increased operating and total administrative e

A superconducting transition temperature (Tc) as high as 100 K was recently discovered in one monolayer FeSe grown on SrTiO3. The discovery ignited efforts to identify the mechanism for the markedly enhanced Tc from its bulk value of 8 K. There are two main views about the origin of the Tc enhancement: interfacial effects and/or excess electrons with strong electron correlation. Here, we report the observation of superconductivity below 20 K in surface electron-doped bulk FeSe. The doped surface

People of developing countries especially from rural area are commonly exposed to high levels of household pollution for 3-7 h daily using biomass in their kitchen. Such biomass produces harmful smoke and makes indoor air pollution (IAP). Community-based cross-sectional study was performed to identify effects of IAP by simplified measurement approach in Sunsari District of Nepal. Representative samples of 157 housewives from household, involving more than 5 years in kitchen were included by clus