• 품질경영학회지
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• 제40권3호
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• pp.372-380
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• 2012

Purpose: The purpose of this research is to develop the methods for evaluating the business value of a company's technical portfolios. In this study, technical portfolios of 10 major manufacturers and e-Biz industries are examined first from a business model perspective. Subsequently, we suggest future direction of R&D for the pharmaceutical industry by deducing the leading industries sharing similar traits with the pharmaceutical industry. Methods: In order to evaluate and analyze the patents of the major leading industries based on the constituents of a business model, the target patents were selected through the following procedure. Results: First, In this study, using the data obtained from the patent analysis, the differences in the technology portfolios of specific business entities based on the constituents of their business models. Second, deduced business rules of particular business entities through classification analysis and role-model of pharmaceutical industry Conclusion: If enterprise discovers technological change and characters of other enterprise or technology, enterprise could judge a direction of technology which will be developed in the near term and a plan which utilized existing technology to increase enterprise's profits.

• 한국수산과학회지
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• 제57권3호
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• pp.253-261
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• 2024

This study investigated the digital color profiles corresponding to different maturity stages and levels of brown croaker Miichthys miiuy specimens collected from the Southern Sea of South Korea. Maturity stages were determined using photomicrographs of ovarian developmental phases, which were compared with digital color values. Brown croaker specimens ranged from 24 to 81 cm in standard length; mature ovaries were predominantly observed in specimens that exceed 40 cm in length. Monthly ovary color values were primarily concentrated in the 1st and 4th quadrants, with both a^* and b^* values falling within a range of ±15 centered on the origin. Similarly, the testes color values were predominantly situated in the 4th quadrant, with a^* and b^* values ranging from -5 to 15 and 10 to 14, respectively. While the color values of the mature and spawning stages overlapped within a narrow range, distinguishing between them required both the color value and monthly color value distribution to be considered. Thus, this study underscores the efficacy of digital color measurements for assessing brown croaker gonad maturity, and provides more quantitative insights compared to subjective visual assessments by humans.

• 디지털융복합연구
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• 제8권2호
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• pp.55-68
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• 2010

본 연구는 디지털시대의 창업가 육성을 목적으로 대학생들을 대상으로 한 발명창업교육 프로그램의 중요도와 필요도를 규명하고 발명교육프로그램의 타당성을 분석하고자 수행되었다. 연구는 창업과정에서 요구되는 발명교육 프로그램의 발전방향을 제안하고자 한다. 본 연구의 표본은 125명의 대학생이며, 5명의 발명창업 기업가가 참여하였다. 중요연구결과는 다음과 같다 발명창업교육의 분야는 발명개념의 이해, 발명과 경영, 발명과 창의성, 발명과 특허, 그리고 발명실습의 5 가지 영역으로 구분되었다. 대학생들의 인지한 발명교육내용의 평균값은 발명과 경영, 발명실습, 발명과 창의성, 발명개념과 발명과 특허의 순서로 나타났다. 그러나 발명사업가들에게는 발명과 특허, 발명과 경영, 창의성, 발명실습과 발명개념의 순서로 나타났다. 발명교육내용의 필요도 분석에서는 발명과 경영, 발명실습이 타 영역보다 높은 순서로 나타났다. 본 연구는 창업을 위한 발명교육내용이 발명과 경영 부분을 강화해야 하며, 특허부분에서는 학생들이 관심을 가지고 쉽게 경험을 통해 참여할 수 있는 내용전개의 필요성을 제시하고 있다.

• 한국산학기술학회논문지
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• 제10권10호
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• pp.2923-2934
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• 2009

본 논문에서는 차세대 디스플레이 기술에 대해서 기술의 추세를 예측하였다. 차세대 디스플레이 기술은 최근에 급부상 하는 기술로 연구개발을 수행하는데 있어 추후 연구 방향을 설정하고 기술전략을 세우는데 불확실성을 줄여주기 위해 기술의 미래 발전 방향이나 추세에 대해서 예측을 해 보는 것이 중요하다. 이렇게 함으로써 연구개발 목표를 좀 더 명확히 설정할 수 있고 불필요한 투자를 방지할 수 있다. 본 논문에서는 차세대 디스플레이 기술에 대해서 특허 데이터를 사용하여 정량적인 예측을 수행하였다. 예측 방법으로는 Gompertz, Logistic, Bass모형을 사용하였다. 이 세 모형들은 과거 시장에서의 제품의 확산과정을 설명하는데 사용되었던 모형이다. Gompertz, Logistic모형은 시장의 수요예측 뿐만 아니라 기술의 수요예측에도 주로 쓰였기 때문에 본 논문에서도 이 두 모형을 적용하였다. 하지만 Gompertz, Logistic 모형은 시장에서의 내부 효과에 의한 확산만을 반영한 모형이고 성장의 상한 값을 추정하는 데 있어 추정이 쉽지 않다는 단점이 있다. 기술의 수요도 시장에서의 제품의 확산처럼 기술혁신에 의한 외부 효과와 산업으로 전파될 때의 내부효과가 함께 수요의 확산에 영향을 끼칠 것이라고 판단하여 본 논문에서는 시장에서의 제품 확산의 외부효과와 내부효과를 동시에 고려한 Bass모형도 함께 적용하여 예측을 수행하였다. 또한 Gompertz, Logistic 모형의 상한 값을 Bass모형을 통해 객관적으로 추정하여 예측을 수행함으로써 두 모형의 단점을 보완하였다.

• Clinical and Experimental Reproductive Medicine
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• 제32권3호
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• pp.223-230
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• 2005

Objective: This study was performed to evaluate the accuracy of hysterosalpingography (HSG) for evaluating female infertility patients by comparison with hysteroscopic and laparoscopic examination. Methods and Material: Total 219 infertile patients were retrospectively analyzed between January 1, 2002 and December 31, 2003. Ninety seven patients (44.3%) were primary infertility, 122 patients (55.7%) were secondary infertility. We performed hysteroscopic and laparoscopic examination on next cycle when HSG revealed any abnormal finding, and 3~6 cycles later if HSG was normal. Results: The accuracy of HSG was 65.2% compared with hysteroscopic examination (sensitivity 88.4%, specificity 46.4%, false positive rate 53.6%, false negative rate 11.6%). The most common abnormal finding of hysteroscopy was uterine synechia (67.4%) followed by endometrial polyp, uterine anomaly (e.g. uterine septum), endometrial hyperplasia. Compared with laparoscopic examination, the accuracy of HSG was 76.9% (sensitivity 98.9%, specificity 70.6%, +LR 3.36, -LR 0.02). The positive predictive value of normal patent tube was excellent (99.6%) but that of proximal tubal blockage was only 46.7%. The unilateral tubal obstruction of HSG was poor accuracy (+LR 3.85 -LR 0.68) and 70% of those was patent by laparoscopic examination. Laparoscopic examination also revealed that 53% of patients had peritubal adhesion and 37% of patients has additional pelvic findings, especially endometriosis. Among the patients had normal HSG, 53.5% patients with normal ultrasonography was diagnosed endometriosis (25.6% of them had endometriosis stage I-II). Conclusion: Normal HSG shows a high negative predictive value. Nevertheless, the incidence of associated pelvic disease in the normal HSG group is high enough to warrant diagnostic laparoscopy if nonsurgical treatment is unsuccessful. Because HSG has poor accuracy in predicting distal tubal blockage and peritubal adhesion, and poor positive predictive value of proximal tubal blockage, laparoscopic examination could be considered in abnormal HSG group.

• Korean Journal of Radiology
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• 제20권4호
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• pp.621-630
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• 2019

Objective: To study the prevalence and clinical characteristics of decreased myocardial blood flow (MBF) quantified by dynamic computed tomography (CT) myocardial perfusion imaging (MPI) in symptomatic patients without in-stent restenosis. Materials and Methods: Thirty-seven (mean age, 71.3 ± 10 years; age range, 48-88 years; 31 males, 6 females) consecutive symptomatic patients with patent coronary stents and without obstructive de novo lesions were prospectively enrolled to undergo dynamic CT-MPI using a third-generation dual-source CT scanner. The shuttle-mode acquisition technique was used to image the complete left ventricle. A bolus of contrast media (50 mL; iopromide, 370 mg iodine/mL) was injected into the antecubital vein at a rate of 6 mL/s, followed by a 40-mL saline flush. The mean MBF value and other quantitative parameters were measured for each segment of both stented-vessel territories and reference territories. The MBF_ratio was defined as the ratio of the mean MBF value of the whole stent-vessel territory to that of the whole reference territory. An MBF_ratio of 0.85 was used as the cut-off value to distinguish hypoperfused from non-hypoperfused segments. Results: A total of 629 segments of 37 patients were ultimately included for analysis. The mean effective dose of dynamic CT-MPI was 3.1 ± 1.2 mSv (range, 1.7-6.3 mSv). The mean MBF of stent-vessel territories was decreased in 19 lesions and 81 segments. Compared to stent-vessel territories without hypoperfusion, the mean MBF and myocardial blood volume were markedly lower in hypoperfused stent-vessel territories (77.5 ± 16.6 mL/100 mL/min vs. 140.4 ± 24.1 mL/100 mL/min [p < 0.001] and 6.4 ± 3.7 mL/100 mL vs. 11.5 ± 4 mL/100 mL [p < 0.001, respectively]). Myocardial hypoperfusion in stentvessel territories was present in 48.6% (18/37) of patients. None of clinical parameters differed statistically significantly between hypoperfusion and non-hypoperfusion subgroups. Conclusion: Decreased MBF is commonly present in patients who are symptomatic after percutaneous coronary intervention, despite patent stents and can be detected by dynamic CT-MPI using a low radiation dose.

• 자원리싸이클링
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• 제18권4호
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• pp.70-81
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• 2009

폐전기 전자기기 재활용 관련 기술의 추이 및 동향을 조사하기 위하여 출원된 특허의 검색을 실시하였다. 특허 검색 데이터베이스는 국내 WIPS사의 특허검색 사이트를 이용하였으며, 검색된 특허의 요약문을 분석하여 최종적으로 223건을 선정하였다. 1986년부터 2007년까지의 특허를 주요 국가별, IPC 분류별, 주요 출원인(회사)별, 관련 기술별, 대상물질별로 분류하여 분석하였다. 특허출원국 및 출원인 국적 분석에서 일본이 가장 많은 특허를 출원하였으며, 물리적 전처리 기술에 관한 특허출원이 가장 많았다. 대상물질 중 인쇄회로기판에 대한 출원이 가장 많았으며 이는 인쇄회로기판이 유가금속 함유량이 높아 부가가치가 높기 때문이다.

• 산업경영시스템학회지
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• 제46권4호
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• pp.1-14
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• 2023

As markets and industries continue to evolve rapidly, technology opportunity discovery (TOD) has become critical to a firm's survival. From a common consensus that TOD based on a firm's capabilities is a valuable method for small and medium-sized enterprises (SMEs) and reduces the risk of failure in technology development, studies for TOD based on a firm's capabilities have been actively conducted. However, previous studies mainly focused on a firm's technological capabilities and rarely on business capabilities. Since discovered technologies can create market value when utilized in a firm's business, a firm's current business capabilities should be considered in discovering technology opportunities. In this context, this study proposes a TOD method that considers both a firm's business and technological capabilities. To this end, this study uses patent data, which represents the firm's technological capabilities, and trademark data, which represents the firm's business capabilities. The proposed method comprises four steps: 1) Constructing firm technology and business capability matrices using patent classification codes and trademark similarity group codes; 2) Transforming the capability matrices to preference matrices using the fuzzy function; 3) Identifying a target firm's candidate technology opportunities using the collaborative filtering algorithm; 4) Recommending technology opportunities using a portfolio map constructed based on technology similarity and applicability indices. A case study is conducted on a security firm to determine the validity of the proposed method. The proposed method can assist SMEs that face resource constraints in identifying technology opportunities. Further, it can be used by firms that do not possess patents since the proposed method uncovers technology opportunities based on business capabilities.

• 한국통신학회논문지
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• 제40권12호
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• pp.2491-2502
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• 2015

중소제조업 스마트공장 구현의 주요이슈는 기술개발 및 투자여력 부족에 대한 해결 방안 모색과 스마트공장 기술에 대한 정확한 구현 및 성공적 성과창출 여부이다. 제조혁신 3.0 패러다임의 실효적 추진을 위해서는 중소제조업의 가치사슬 수준에 기반을 둔 기술정책 추진의 전문성과, 글로벌 기술동향 대비 핵심기술 개발의 우선순위에 의한 세부적 실천계획이 요구된다. 이 논문은 스마트공장 구현관련 IIoT와 CPS 기술에 대한 최신 기술 및 특허 동향분석과 대응전략 및 실천과제를 제시하여 기본적 제조혁신 3.0 기획구조하의 스마트공장 구현을 지원하는데 중점을 둔다.

• Journal of Chest Surgery
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• 제17권1호
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• pp.32-40
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• 1984

During the past six years from July 1977 to June 1983, fifteen adult patients of patent ductus arteriosus were surgically treated. The results were as follows: 1. Of the 15 patients, their age range was 17 to 34 years with a mean of 24 years, and sexual predominance was women [9. cf. 6 men]. 2. The most common symptom showed exertional dyspnea, and 10 patients were classed in NYHA class II, the rest were all class III. 3. On physical examination, all patients were auscultated continuous murmur, but concomitantly diastolic murmur was noted apical region in 2 patients. 4. On roentgenogram of chest, normal finding was 3 patients, and the other patients were revealed the evidence of pulmonary congestion. 5. The electrocardiogram was normal in 6 patients, but LVH was seen in 5, and 2 patients were LVH+ LAH. 6. Cardiac catheterization was performed in 12, and mean value of SO2[LPA-RV] was 6.3%, Q/Q 2.09, peak systolic pulmonary arterial pressure 45.3 mmHg, and Rp/Rs 0.365. 7. All operations were carried out by posterolateral thoracotomy. In 6 patients, division and suture of ductus were possible, the other patients were treated by division and ligation with heavy silk or Dacron patch. 8. Postoperative complications were hoarseness, persistent murmur, reoperation for bleeding, and atelectasis. Early and late mortality was 20% [3 patients], and cause of death was mainly aneurysmal rupture of previous operative site.