• 한국분말야금학회:학술대회논문집
• /
• 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part2
• /
• pp.1136-1137
• /
• 2006

The ultrahigh pressure process for synthesizing diamond grits is due to make a quantum leap: the raw materials will incorporate diamond seeds with a predetermined pattern. The result is doubling the diamond yield with a narrower size distribution. Moreover, the shape of diamond crystals can be precisely tuned. For example, diamond octahedra or diamond cubes, that are not available today, can be mass-produced. The new technology is now being implemented worldwide so the future diamond grits will have improved quality at reduced prices.

• Asia pacific journal of information systems
• /
• 제16권3호
• /
• pp.229-241
• /
• 2006

In this paper, we develop three stage non-cooperative game models to analyze the alliance strategies of companies in internet markets where network effects are present. Regardless of its market share, an internet company's strategic alliance appears to be a superior strategy. The analysis also identifies profit sharing structures in the internet market where a smaller and unknown company is enforced to split its own profits with a larger and well-known company. It is shown that the amount of profit sharing grows as the size of network effects becomes larger.

• 기술혁신연구
• /
• 제29권2호
• /
• pp.59-85
• /
• 2021

본 연구에서는 기술혁신 관점에서 창업기업 여부, 연구전담조직 보유, 국가연구개발사업 수혜 등의 특성이 한계기업의 정상기업 전환에 유의하게 기여하는지를 분석하였다. 분석결과, 한계기업 중 창업기업에게 국가연구개발사업을 지원하면, High-tech 산업을 중심으로 정상기업으로의 전환에 긍정적으로 기여하는 것으로 나타났다. 또한 한계기업의 연구전담조직의 보유여부가 정상기업으로의 전환에 긍정적으로 기여하였다. 이는 연구전담조직이 체계적인 R&D를 수행할 수 있는 조직기반이 되고 있음을 시사한다. 상기 분석결과는 한계기업에 대한 구조조정 위주의 기존 산업정책에서 정상기업으로의 전환 가능성이 높은 한계기업에 대한 선별적인 R&D 지원정책으로 패러다임 전환이 필요함과 동시에 한계기업의 정상기업으로의 전환을 지원하기 위한 국가연구개발사업의 전략성 강화가 필요함을 시사한다.

• 대한안전경영과학회:학술대회논문집
• /
• 대한안전경영과학회 2005년도 추계학술대회
• /
• pp.93-100
• /
• 2005

Small & medium sized company is the most efficient way of management to prevent my accident in the area of industry. Employees are more than 30 to less than 50 persons and which is liable for securing a safety manager on site, is gradually seen on the surface. Even a small company is nothing less than a dead zone from a safety since it's free from his obligation of employing a safety manager. Let us now think about the effective measures against a industrial accident by collecting, reviewing a variety of preventive measures, which is being carried out for preventing an industrial accident happening in a small company, and comparing, analyzing the effect according to the respective measures. Through this research, it's expected to contribute to both the development of small & medium sized company and our national economy with the improvement of a company's competitiveness and the accumulation a technical background by way of prevention from occurring industrial accident in a small & medium sized company, in accordance with an friendly environment of work room to protect the employee from leaving his job.

• 서비스연구
• /
• 제13권2호
• /
• pp.24-40
• /
• 2023

최근의 소비자들은 기업이 우리 사회가 직면한 문제들과 맞서 싸우며 사회 변화를 위하여 관심을 가지고 행동하기를 기대한다. 이에 본 연구는 우리 사회의 주요 이슈와 관련된 사회적 목소리를 담은 네이티브 광고에 대한 효과를 규명하고자 하였다. 특히 본 연구는 사회적 목소리를 담은 네이티브 광고의 주체와 개인 특성인 윤리적 소비 성향에 따라 그 효과가 어떻게 나타나는지에 대하여 주목하였다. 그리고 소비자는 기업이 후원한 네이티브 광고보다 기업이 직접 제작한 네이티브 광고에 대해 부정적 기업 태도를 보일 것이며, 소비자의 윤리적 소비 성향에 따라 이러한 효과가 달라질 것이라는 가설을 제안하였다. 일련의 가설을 검정하기 위하여 직장인들을 대상으로 온라인 실험을 진행하였다. 연구 결과에 따르면, 사회적 목소리를 담은 네이티브 광고에 있어서 주체를 기업이 직접 제작이라고 표기했을 때와 기업이 후원하였다고 표기하였을 시 소비자의 기업 태도는 차이가 나타나지 않았다. 그러나 소비자의 개인 특성인 윤리적 소비 성향에 따른 유의한 차이를 발견할 수 있었는데 윤리적 소비 성향이 높은 소비자의 경우 사회적 목소리를 담은 네이티브 광고의 주체로 기업이 제작하였다는 표기보다는 기업이 후원하였다고 표기한 경우 기업 태도가 높게 나타났다. 이와 같은 연구의 결과는 광고 표기의 명료성에 관한 관심이 높아지는 현시점에서 네이티브 광고의 주체 및 표기에 대한 효과를 밝히고 이러한 효과에 영향을 미치는 개인 특성 변인을 규명하였다는 점에서 연구의 함의를 찾을 수 있다. 또한, 실무적으로 기업이 사회적 목소리를 담은 네이티브 광고를 집행할 시에 윤리적 소비 성향이 높은 소비자들의 기업 태도를 높이기 위해서 광고 주체 및 표기를 더 세심하게 재고해야 할 필요성이 있음을 시사해준다.

• Biotechnology and Bioprocess Engineering:BBE
• /
• 제7권6호
• /
• pp.340-346
• /
• 2002

The purpose of the present study was to examine the efficacy and mechanism of the PAB (para-amino benzamidine) affinity column chromatography, Viresolve NFP virus filtration, pasteurization (60$\^{C}$ heat treatment for 10 h), and lyophilization steps employed in the manufacture of urokinase from human urine as regards the removal and/or inactivation of the hepatitis A virus (HAV). Samples from the relevant stages of the production process were spiked with HAV and subjected to scale-down processes mimicking the manufacture of urokinase Samples were collected at each step, immediately titrated using a 50% tissue culture infectious dose (TCID$\_$50/), and the virus reduction factors evaluated. PAB chromatography was found to be an effective step for removing HAV with a log reduction factor of 3.24. HAV infectivity was rarely detected in the urokinase fraction, while most of the HAV infectivity was recovered in the unbound and wash fractions. HAV was completely removed during the Viresolve NFP filtration with a log reduction factor of $\geq$ 4.60. Pasteurization was also found to be an effective step in inactivating HAV where the titers were reduced from an initial titer of 7.18 log$\_$10/ TCID$\_$50/ to undetectable levels within 10 h of treatment. The log reduction factor achieved during pasteurization was $\geq$ 4.76. Lyophilization revealed the lowest efficacy for inactivating HAV with a log reduction factor of 1.48. The cumulative log reduction factor was $\geq$ 14.08. Accordingly, these results indicate that the production process for urokinase exhibited a sufficient HAV reducing capacity to achieve a high margin of virus safety.

• 한국건설관리학회:학술대회논문집
• /
• 한국건설관리학회 2008년도 정기학술발표대회 논문집
• /
• pp.44-51
• /
• 2008

근래에 지식경영이라는 용어는 일종의 캠페인과 같이 다양한 분야에서 다양한 범위와 방법으로 사용되고 있다. 지식경영은 좁게는 지식을 갖춘 개인으로부터 넓게는 조직 내외부를 잇는 네트워크의 개념까지 다루기도 하며, 현재의 특정문제 해결을 위한 특정지식부터 기업이나 조직의 과거성과를 재는 잣대와 미래전략 수립을 위한 키로 활용하기도 한다. 본 연구는 지식, 지식경영, 지식경영 기업에 관한 포괄적인 연구조사를 바탕으로 건설관리 기업을 위한 지식경영모델을 제시하고, 그 중 일부에 해당하는 VE 전문가시스템을 소개하였다. 본 연구의 결과는 현재 지식경영 체제를 위해 노력을 경주중인 건설기업에게는 현재의 지식경영 정책과 방향을 되돌아보며 부족하거나 놓친 부분을 검토할 수 있도록 할 것이며, 지식경영을 도입하려고 준비중인 기업에게는 지식경영 전략을 수립하는데 있어 참고할 수 있는 하나의 대안이 될 것이다.

• Archives of Pharmacal Research
• /
• 제28권12호
• /
• pp.1350-1357
• /
• 2005

Nuclear factor kappa B (NF-$\kappa$B) regulates the expression of multiple cytokines, chemokines, and cell adhesion molecules that are involved in the pathogenesis of asthma. We investigated the anti-asthmatic effects and the mechanism of action of DA-9201, an extract of the black rice, in a mouse model of asthma. Mice immunized with ovalbumin (OVA) were administered with DA-9201 (30, 100 or 300 mg/kg) or dexamethasone (DEXA, 3 mg/kg) for 2 weeks and challenged with aerosolized OVA during the last 3 days. Anti-asthmatic effects were assessed by means of enhanced pauses, level of total lgE and Th2 cytokines in plasma or bronchoalveolar lavage fluid (BALF), the percentage of eosinophils in BALF, and histopathological examination. The expression of NF-$\kappa$B in nuclear and cytoplasmic fraction and its DNA-binding activity in lung tissues were analyzed by means of Western blotting and electrophoretic gel mobility shift assay (EMSA), respectively. DA-9201 significantly reduced airway hyperrespon-siveness (AHR), total lgE level in plasma and BALF, IL-4, IL-5, and IL-13 levels in BALF, and the percentage of eosinophils in BALF. Tissue inflammation was significantly improved by DA­9201 treatment. In addition, DA-9201 dramatically suppressed the expression of NF-$\kappa$B and its DNA-binding activity. These results suggest that DA-9201 may be useful for the treatment of asthma and its efficacy is related to suppression of NF-$\kappa$B pathway.

• 한국근적외분광분석학회:학술대회논문집
• /
• 한국근적외분광분석학회 2001년도 NIR-2001
• /
• pp.1288-1288
• /
• 2001

X-ray powder diffraction (XRD) is utilized for determination of polymorphism in crystalline organic materials. Though convenient to use in a laboratory setting, XRD is not easily adapted to in situ monitoring of synthetic chemical production applications. Near-Infrared spectroscopy (NIR) can be adapted to in situ manufacturing schemes by use of a source/detector probe. Conversely, NIR is unable to conclusively define the existence of polymorphism in crystalline materials. By combining the two techniques, a novel simultaneous NIR/XRD instrument has been developed. During material's analysis, results from XRD allow for defining the polymorphic phase present, and NIR data are collected as a fingerprint for each of the observed polymorphs. These NIR fingerprints will allow for the development of a library, which can be referenced during the use of a NIR probe in manufacturing settings.

• ETRI Journal
• /
• 제25권5호
• /
• pp.288-296
• /
• 2003

In this study, we present a 260k color TFT LCD driver chip set that consumes only 5 mW in the module, which has exceptionally low power consumption. To reduce power consumption, we used many power-lowering schemes in the logic and analog design. A driver IC for LCDs has a built-in graphic SRAM. Besides write and read operations, the graphic SRAM has a scan operation that is similar to the read operation of one row-line, which is displayed on one line in an LCD panel. Currently, the embedded graphic memory is implemented by an 8-transistor leaf cell and a 6-transistor leaf cell. We propose an efficient scan method for a 6-transistor embedded graphic memory that is greatly improved over previous methods. The proposed method is implemented in a 0.22 ${\mu}m$ process. We demonstrate the efficacy of the proposed method by measuring and comparing the current consumption of chips with and without our proposed scheme.