∇2G연산자를 사용한 임의의 공간주파수의 밝기변화 추출

이우형 釜山大學校 工科大學 1987 工科大學 硏究 報告 Vol.34 No.-

정보기술 인프라가 비즈니스 프로세스와 조직성과에 미치는 영향

이우형,이명호 한국경영과학회 2003 韓國經營科學會誌 Vol.28 No.3

This research shows that as the use of IT spreads, the investments of IT must be accompanied by the innovation of the business process of an Organization to increase productivity. It examines closely to the relations between these by presenting a theoretical formula with related theories at the basis. that shows the characteristics of IT Infrastructure and heightens the results of organization In previous researches, various results co-exist in presenting the direct relativeness between IT Infrastructure and results of organization But in this research, a parameter called business process has been included making it possible to analyze even the indirect effects to the results of organization Also the difference and relativity between the IT Infrastructure and business process groups according to the company environment factor has been proved.

녹색소비주의가 시장구조에 미치는 영향

이우형 한국경제통상학회 2018 경제연구 Vol.36 No.4

In this paper, we introduced the behaviors of green consumers explicitly into the demand function and analyzed how these behaviors affect the production activities of firms and market. The main results are as follows. First, if consumers respond positively to firms' eco-friendly production activities, firms choose the eco-friendly production activities competitively. Second, total market size is the greatest when no firm adopt eco-friendly activities, and it is the larger when all the firms choose it than when some firms do. Finally, the social damage caused by pollution is the largest when no firm choose eco-friendly activities and the smallest when all the firms choose it. In addition, social welfare is the largest when the all the firms choose eco-friendly production activities due to the increase of profits and the decrease of social damage, despite the decrease of consumer surplus due to the reduction of the market size. 본 논문에서는 소비자들의 녹색소비주의 행동을 보다 명시적으로 수요함수에 도입함으로써 이들의 행동이 기업의 생산 활동에 어떤 영향을 미치는지 이론적인 관점에서 접근하였다. 주요 결과는 다음과 같다. 먼저, 소비자들이 기업의 친환경적 생산 활동에 적극적으로 반응한다면 기업은 모두 친환경적인 생산 활동을 선택한다. 본 연구에서 사용한 모델에 의하면 비록 친환경적인 생산 활동을 선택할 경우 거기에 따른 비용이 발생하지만 그 이상으로 시장 규모의 확대를 기대할 수 있고 결과적으로 기업의 이윤도 더 증가하므로 기업들이 담합하여 이러한 친환경적인 활동을 거부할 유인이 존재하지 않는다는 점을 밝혔다. 둘째로, 총 시장 규모는 기업들 모두가 친환경적인 활동을 선택하지 않을 때 가장 크며, 일부 기업만 선택할 때보다 모든 기업들이 선택할 때 더 크다. 이는 이런 활동을 선택하지 않은 기업의 경우 소비자들에 의해 수요가 축소되므로 생산량을 줄일 수밖에 없기 때문이다. 끝으로, 오염에 의한 사회적 피해는 기업들 모두가 친환경적인 활동을 선택하지 않을 때 가장 크고 기업들이 모두 선택할 때 가장 작게 된다. 또한 시장 규모의 축소로 인한 소비자 잉여의 감소가 있음에도 불구하고 기업 이윤의 증가와 사회적 피해의 감소로 인해 사회후생은 모든 기업이 친환경적인 생산 활동을 선택할 때 가장 커진다.

Specific Oligopeptides in Fermented Soybean Extract Inhibit NF-κB-Dependent iNOS and Cytokine Induction by Toll-Like Receptor Ligands

이우형,우홍민,이창규,성대일,송혜정,Toshiro Matsui,김한복,김상건 한국식품영양과학회 2014 Journal of medicinal food Vol.17 No.11

The ethanol extract of fermented soybean from Glycine max (chungkookjang, CHU) has been claimed to have chemopreventive and cytoprotective effects. In the present study, we examined the inhibitory effect of CHU on inducible nitric oxide synthase (iNOS) and cytokine induction by toll-like receptor (TLR) ligands treatment and attempted to identify the responsible active components. Nitric oxide (NO) content and iNOS levels in the media or RAW264.7 cells were measured using the Griess reagent and real-time polymerase chain reaction assays. CHU treatment inhibited NO production and iNOS induction elicited by lipopolysaccharide (LPS, TLR4L) in a concentration-dependent manner. Tumor necrosis factor-a and interleukin-6 productions were also diminished. Peptidoglycans (TLR2/6L) and CpG-oligodeoxynucleotides (TLR9L) from CHU inhibited iNOS induction, but not poly I:C (TLR3L) or loxoribine (TLF7L). The anti-inflammatory effect resulted from the inhibition of nuclear factor-kappa B (NF-jB) through the inhibition of inhibitory-jB degradation. Of the representative components in CHU, specific oligopeptides (AFPG and GVAWWMY) had the ability to inhibit iNOS induction by LPS, whereas others failed to do so. Daidzein, an isoflavone used for comparative purposes, was active at a relatively higher concentration. In an animal model, oral administration of CHU to rats significantly diminished carrageenan-induced paw edema and iNOS induction. Our results demonstrate that CHU has anti-inflammatory effects against TLR ligands by inhibiting NF-jB activation, which may result from specific oligopeptide components in CHU. Since CHU is orally effective, dietary applications of CHU and/or the identified oligopeptides may be of use in the prevention of inflammatory diseases.

급성심근경색증의 합병증과 예후

李愚馨 藥業新聞社 1992 醫藥情報 Vol.1992 No.1

한국 전통적 수치료에서의 온천에 대한 치료효과

이우형 대구대학교 특수교육재활과학연구소 2009 재활과학연구 Vol.27 No.2

목적: 이 논문의 목적은 전통적 수치료인 온천에 대한 치료 효과와 접근 방법을 연구하는데 있다. 방법: 이 논문은 전통적 수치료와 온천수에 대한 책, 세미나 공지와 인터넷 자료들을 참고한 문헌 고찰이다. 결과: 이 고찰은 온천수를 이용한 물리치료를 가능하게 할 것이다. 결론: 온천수를 이용하여 다른 수치료적 방법들과 접목시키고 좀 더 우리의 치료적 방법들을 개발한다면 온천수를 이용한 치료는 한국의 전통적 수치료로 맥을 이어갈 수 있을 것으로 사료된다. Purpose: The purpose of this study investigate method and therapeutic effects about hot spring water of traditional hydrotherapy. Methods: This is a literature review with books, seminar notice and internet research for traditional hydrotherapy and hot spring water. Results: It is possible that the hot spring water effect in physical therapy. Conclusion: If we develop more therapeutic method and graft other hydrotherapeutic method, therapy of using for hot spring water can continue spirit of korea traditional hydrotherapy.

X-inefficiency and Privatization in a Mixed Duopoly

이우형,이기동 한국경제연구학회 2014 Korea and the World Economy Vol.15 No.2

The purpose of this study is two-fold: First, we investigate how X-inefficiency affects the behaviors of firms in a mixed oligopoly market. Second, we explore whether optimal subsidies can restore the social optimum like the previous literature on subsidization, with assuming that the efficiency of a public firm depends on the degree of privatization. The main results are as follows. First, despite higher marginal cost due to X-inefficiency, the price of a public firm tends to be lower than that of a private firm, when the degree of nationalization of the public firm is low enough. Second, if the marginal effect of nationalization on X-inefficiency measured at full privatization is relatively low and the elasticity of X-inefficiency measured at full nationalization is greater than the critical level, then the partial privatization is the optimal strategy from the social welfare viewpoint. Third, when an efficiency gap exists between firms, asymmetric subsidization can restore the social optimum, and the optimal subsidization level is not directly related to the degree of nationalization, but is affected by the efficiency gap. In addition, the subsidy for a private firm is larger than that for a public firm, which is relatively inefficient compared to the private firm.

Unsuspected Duplicated Gallbladder in a Patient Presenting with Acute Cholecystitis

이우형,송대현,이진권,박지호,김주연,곽승진,박태진,정상호,주영태,정은정,이영준,홍순찬,최상경,정치영 대한의학회 2017 Journal of Korean medical science Vol.32 No.3

Duplicated gallbladder (GB) is a rare congenital disease. Surgical management of a duplicated GB needs special care because of concurrent bile duct anomalies and the risk of injuring adjacent arteries during surgery. An 80-year-old man visited an emergency room with right upper quadrant abdominal pain. Computed tomography (CT) revealed cholecystitis with a 2-bodied GB. Because of this unusual finding, magnetic resonance choledochopancreatography was performed to detect possible biliary anomalies. The 2 GB bodies were unified at the neck with a common cystic duct, a so-called V-shaped duplicated GB. The patient's right posterior hepatic duct joined the common bile duct (CBD) near the cystic duct. The patient underwent laparoscopic cholecystectomy without adjacent organ injury, and was discharged uneventfully. Surgeons should carefully evaluate the patient preoperatively and select adequate surgical procedures in patients with suspected duplicated GB because of the risk of concurrent biliary anomalies.

소비자의 행동이 기업의 CSR활동에 미치는 영향 : 수요 측면에서 본 기업의 환경 R&D 투자

이우형 한국무역통상학회 2024 무역통상학회지 Vol.24 No.2

과학기술 정보분석을 통한 유망연구영역 탐색 방법론

이우형,문영호 대한산업공학회 2006 대한산업공학회 춘계학술대회논문집 Vol.2006 No.5