• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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• pp.142-145
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• 2003

CRTs have been in the mainstream of displays for over 100 years since K. F. Brown invented the first tube in 1897. The position of CRTs, however, has come to be threatened by flat panel displays, whose performances are notably improved these days. The keys to survival of CRTs as leading displays are examined in this report.

• Journal of Gastric Cancer
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• 제13권4호
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• pp.226-231
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• 2013

Purpose: The role of metastasectomy has been debatable and unclear in the treatment for patients with metastatic gastric cancer. Therefore, this study was designed to evaluate the role of metastasectomy on the overall survival of these patients. Materials and Methods: In 2,406 patients who underwent gastrectomy for gastric cancer between 1998 and 2010, 188 (7.8%) patients had their first surgery for metastatic gastric cancer. To minimize the bias of systemic chemotherapy, 99 patients who received postoperative chemotherapy (fewer than 2 cycles) were excluded. The primary gastrectomy or metastasectomy had not been enforced in the following cases. Patients with far advanced peritoneal dissemination, multiple liver and lung metastasis (more than 2), and a poor general condition (Eastern Cooperative Oncology Group>2) were excluded. Based on the metastasectomy, the patients were classified into two groups, gastrectomy with metastasectomy and gastrectomy only group. Results: There was no significant difference between both groups in clinicopathological characteristics except for the mean age (P=0.047). The univariate analysis for overall survival show statistical significances in metastasectomy (P=0.026), distal gastrectomy (P=0.047), and combined resection of another organ (P=0.047) group. With a multivariate analysis, metastasectomy was a significant factor in patient survival after surgery (odds ratio 1.679; P=0.034). Conclusions: Based on our results, we assume that a detailed strategy for surgery is needed to improve the overall survival of patients with metastatic gastric cancer. Therefore, we suggest that a metastasectomy can help prolong overall survival in some patients with metastatic gastric cancer.

• Asian Pacific Journal of Cancer Prevention
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• 제16권4호
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• pp.1665-1669
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• 2015

Background: The optimal surgical strategy for the treatment of synchronous resectable gastric cancer liver metastases remains controversial. The aims of this study were to analyze the outcome and overall survival of patients presenting with gastric cancer and liver metastases treated by simultaneous resection. Materials and Methods: Between January 1990 and June 2009, 35 patients diagnosed with synchronous hepatic metastases from gastric carcinoma received simultaneous resection of both primary gastric cancer and synchronous hepatic metastases. The clinicopathologic features and the surgical results of the 35 patients were retrospectively analyzed. Results: The 5-year overall survival rate after surgery was 14.3%. Five patients survived for more than 5 years after surgery. No mortality has occurred within 30 days after resection, although two patients (5.7%) developed complications during the peri-operative course. Univariate analysis revealed that patients with the presence of lymphovascular invasion of the primary tumor, bilateral liver metastasis and multiple liver metastases suffered poor survival. Lymphovascular invasion by the primary lesion and multiple liver metastases were significant prognostic factors that influenced survival in the multivariate analysis (p=0.02, p=0.001, respectively). Conclusions: The presence of lymphovascular invasion of the primary tumor and multiple liver metastases are significant prognostic determinants of survival. Gastric cancer patients without lymphovascular invasion and with a solitary synchronous liver metastasis may be good candidates for hepatic resection. Simultaneous resection of both primary gastric cancer and synchronous hepatic metastases may effectively prolong survival in strictly selected patients.

• 한국융합학회논문지
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• 제12권6호
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• pp.151-160
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• 2021

본 연구는 뉴노멀 시대에의 경쟁우위 확보 및 생존을 위한 전략 제시가 필요하다고 판단하고 경영 전략적 대안을 제시하고자 하였다. 이를 위해 본 연구는 문헌 조사와 기업 CEO 10인의 집중 인터뷰를 통해 코로나19에 의한 뉴노멀과 이로 인해 야기된 경영환경 변화 트렌드 및 대응 전략 유형을 도출한다. 본 연구는 다양한 영역과 분야에서 전개될 수 있는 전략 대안 가운데 기업의 디지털 기반 경영 및 사업 수준의 전략 대안으로 연구 범위를 한정하였다. 기업 수준의 디지털 기반 전략 대안으로는 사업구조 리디자인 전략, 회복탄력성 강화 전략, ESG 경영전략, 디지털 트랜스포메이션 전략을 제시하였다. 사업 수준의 디지털 기반 전략 대안으로는 산업구조 리딩의 디지털전략, 디지털 혁신의 경쟁전략, 개방형 혁신의 플랫폼 전략, 고객 가치 지향 전략을 제시하였다. 본 연구는 디지털 기반의 전략을 보다 체계화하고자 하는 시도였다는 점과 어려운 상황을 슬기롭게 대처해야 하는 기업들의 전략적 대응을 보다 체계적으로 시행하도록 지원할 수 있다는 점에서 기여를 하였다.

• Strategy21
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• 통권30호
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• pp.31-62
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• 2012

It is a commons sense that the Republic of Korea is a maritime state that depends its survival on International Trade and International Economy. Korea was a peninsula and do it can be both maritime and continental state by its choice. However, after the national division in 1945, South Korea had became a virtual island and pursue a maritime way for national development in the past 60 plus years. Now, South Korea is becoming a world's 12 th largest major trading and maritime state. South Korea has far more ships per capita than any other nations in the world and its economy is heavily depend upon the imports and exports with other nations in the world that pass through the oceans. Therefore, the Koreans regard the security of the sea lanes of communication as vital to the survival of the nation. The SLOC is the life line for Republic of Korea. Since the early 1990s, immediately after the Cold War was over, South Koreans began to recognize the importance of Sea Routes and thus began to build a navy that can handle with the new problems of the post Cold War era. However, the maritime security environments of the Republic of Korea today is shaky and dangerous. Almost every water near the Korean peninsula, some kind of international confrontations are going on. Territorial disputes on Dok do, Senkaku, Scarbrough, Shisha, Nansha and Eodo between and among Korea, Japan, China, Taiwan, Phillipines, Indonesia and Vietnam are the examples. In this essay, the author argues that the S. Korean efforts and capabilities to deal with these challenges are not enough and exhorts more efforts and more powerful navy for the Korean people.

• 한국항해항만학회지
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• 제30권9호
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• pp.749-754
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• 2006

The maritime logistics environment including seaborne trade, shipping and ports is changing rapidly and continuously. Large containerships, mega carriers and global terminal operators try to achieve economies of scale and economies of scope. As a result of the changing environment, the competition between ports to achieve competitiveness is intensive. Port competition among China, Japan and Korea is becoming fiercer, both directly and indirectly, resulting from the increased trade in northeast Asia. Port development projects within each country stimulate more intensive port competition. As a result, overcapacity, fierce price competition and overlapping hinterland problems will be caused in the future. Co-operation for survival is considered as a strategy in order to solve anticipated problems caused by port competition Busan port, for instance, could co-operate with China and Japan as well as with other ports in Korea Terminal operators' expansion through investments including joint-ventures will make connections between ports smoother. At the port authority level, continuous cooperative interchange between countries is indispensable.

• 산업경영시스템학회지
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• 제22권49호
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• pp.143-152
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• 1999

The competitive advantage of technologies is required for survival of enterprises in the social environments which change rapidly. So the strategy of technology development becomes more and more important. For the establishment of strategy, the situational analysis and the forecasting analysis are executed and they include the technology assessment and the technology forecasting. This research is intended to find out the problems and the difficulties in the current Matrix Method, and to improve the method, finally to help the R&D departments of enterprises applying the method. The suggested matrix(TSM : Technology Shift Matrix) method is designed so that one can judge the current situation of technology and future trend, by moving the matrix which is placed to the upside of the basic matrix.

• Clinical Endoscopy
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• 제56권2호
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• pp.135-142
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• 2023

Endoscopic biliary drainage strategies for managing unresectable malignant hilar biliary obstruction differ in terms of stent type, drainage area, and deployment method. However, the optimal endoscopic drainage strategy remains unclear. Uncovered self-expandable metal stents (SEMS) are the preferred type because of their higher functional success rate, longer time to recurrent biliary obstruction (RBO), and fewer cases of reintervention than plastic stents (PS). Other PS subtypes and covered SEMS, which feature a longer time to RBO than PS, can be removed during reintervention for RBO. Bilateral SEMS placement is associated with a longer time to RBO and a longer survival time than unilateral SEMS placement. Unilateral drainage is acceptable if a drainage volume of greater than 50% of the total liver volume can be achieved. In terms of deployment method, no differences were observed in clinical outcomes between side-by-side (SBS) and stent-in-stent deployment. Simultaneous SBS boasts a shorter procedure time and higher technical success rate than sequential SBS. This review of previous studies aimed to clarify the optimal endoscopic biliary drainage strategy for unresectable malignant hilar biliary obstruction.

• 한국환경과학회지
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• 제15권7호
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• pp.677-688
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• 2006

Currently, the application of $TiO_2$ photocatalyst has been focused on purification and treatment of wastewater. However, the use of conventional $TiO_2$ slurry photocatalyst results in disadvantage of stirring during the reaction and of separation after the reaction. And the usage of artificial UV lamp has made the cost of photocatalyst treatment system high. Consequently, we studied that solar light/$TiO_2$ film system was designed and developed in order to examine disinfection characteristics of sewage wastewater treatment. The optimum conditions for disinfection such as solar light intensity, characteristic of sewage wastewater, amounts of $TiO_2$ and comparison of solar ligth/$TiO_2$ systems with UV light/$TiO_2$ system was examined. The results are as follows: (1) photocatalytic disinfection process with solar light in the presence of $TiO_2$ film more effectively killed total coliform (TC) than solar light or $TiO_2$ film absorption only. (2) The survival ratio of TC and residual ratio of organic material (BOD, CODcr) decreased with remain resistant material. (3) The survival ratio of TC and residual ratio of organic material (BOD, CODcr) decreased with the increase of amounts of $TiO_2$. (4) TC survival ratio decreased linearly with increasing UV light intensity. (5) The disinfection effect of solar light/$TiO_2$ slurry system decreased more than UV light/$TiO_2$ film systems. (6) The disinfection reaction followed first-order kinetics. We suggest that solar light instead of using artificial UV light was conducted to investigate the applicability of alternative energy source in the disinfection of TC and the degradation of organic material.

• Radiation Oncology Journal
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• 제34권3호
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• pp.202-208
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• 2016

Purpose: Our institution has implemented two different adjuvant protocols in treating patients with non-small cell lung cancer (NSCLC): chemotherapy followed by concurrent chemoradiotherapy (CT-CCRT) and sequential postoperative radiotherapy (PORT) followed by postoperative chemotherapy (POCT). We aimed to compare the clinical outcomes between the two adjuvant protocols. Materials and Methods: From March 1997 to October 2012, 68 patients were treated with CT-CCRT (n = 25) and sequential PORT followed by POCT (RT-CT; n = 43). The CT-CCRT protocol consisted of 2 cycles of cisplatin-based POCT followed by PORT concurrently with 2 cycles of POCT. The RT-CT protocol consisted of PORT followed by 4 cycles of cisplatin-based POCT. PORT was administered using conventional fractionation with a dose of 50.4-60 Gy. We compared the outcomes between the two adjuvant protocols and analyzed the clinical factors affecting survivals. Results: Median follow-up time was 43.9 months (range, 3.2 to 74.0 months), and the 5-year overall survival (OS), locoregional recurrence-free survival (LRFS), and distant metastasis-free survival (DMFS) were 53.9%, 68.2%, and 51.0%, respectively. There were no significant differences in OS (p = 0.074), LRFS (p = 0.094), and DMFS (p = 0.490) between the two protocols. In multivariable analyses, adjuvant protocol remained as a significant prognostic factor for LRFS, favouring CT-CCRT (hazard ratio [HR] = 3.506, p = 0.046) over RT-CT, not for OS (HR = 0.647, p = 0.229). Conclusion: CT-CCRT protocol increased LRFS more than RT-CT protocol in patients with completely resected NSCLC, but not in OS. Further studies are warranted to evaluate the benefit of CCRT strategy compared with sequential strategy.