• 산업기술연구
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• 제23권A호
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• pp.149-156
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• 2003

The development and maintenance of a sound bond are essential requirements of concrete repair and replacement. The bond property of a overlay to its substrate concrete during the lifetime is one of the most important performance requirements which should be quantified. A standard or a verified bond strength measurement method is required at field for screening, selecting materials and quality control for overlay or repair materials, but no test method has been adopted as a standard. In this study, a concrete pull off bond strength measurement method for field application is proposed and evaluated. This study compares the splitting tensile test, slant shear test, nipple pipe direct tensile test, flexural adhesion test, briquette tensile test, jumbo nail pull-out test and core pull-off test with their test procedures. From these comparison and investigation, core pull-off test is selected as a main topic of this study because of it's suitability for in situ testing, simplicities in field application and clearness at interface boundary condition. Thus, the proposed core pull off test is evaluated to be the most appropriate method for field application in a simple manner. The fracture surface and fracture mode could be easily determined by visual observation of failure surface of the field specimen. The core pull off test was found to be sensitive to surface condition and latex contents at latex modified concrete.

• 한국지능시스템학회논문지
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• 제25권6호
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• pp.607-614
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• 2015

본 논문은 항공기 정비사의 핵심역량 16개에 대하여 정비능력향상을 목적으로 FSM을 이용하여 구조분석을 실시하여 최상층 3개, 중간층 3개, 하위층 10개로 분류되는 계층별 구조를 핵심역량간의 연결상태와 중요도를 파악하였다. 또한 항공기 정비사의 핵심역량은 업무를 통해서 정비품질 및 생산성이 향상될 수 있다는 관점에서 핵심역량과 업무를 퍼지관계를 이용하여 100명의 항공기 정비사의 설문을 통하여 퍼지관계행렬을 구하여 업무를 평가하는 기준으로 사용하고자 하였다. 본 논문에서는 모델링데이터 100개와 체킹데이터 67개를 사용하여 모델의 유효성을 보였다.

• 임상간호연구
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• 제29권1호
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• pp.95-106
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• 2023

Purpose: This study is descriptive survey research on the analysis of nurses' perception of the 4th industrial revolution and the importance and performance of future core nursing competencies in a tertiary hospital located in Seoul. Methods: Data were collected from 149 nurses with more than a year of work experience and analyzed using descriptive statistics, t-test, one-way ANOVA, and Importance Performance Analysis(IPA) with the IBM SPSS/WIN 25.0 program. Results: The nurses' perception of the 4th industrial revolution was 3.23±0.71 out of 5 points. The importance of future core nursing competencies was 4.31±0.48, and the performance of it was 3.47±0.54. The analysis results of IPA showed that A (area of continuous maintenance) included critical thinking, problem-solving skills, teamwork and collaboration, evidence-based practice, communication, quality improvement and safety, professionalism, self-regulation and self-management, and personal literacy. The specific competencies were not included in B (area of priority improvement). Creativity, informatics, healthcare policy, leadership, research ability, and continuing education were included in C (area of progressive improvement). Knowledge and patient-centered care, ability to manage resources as well as professional, legal, and ethical responsibility were included in D (area of overinvestment). Conclusion: The nurses seemed not to be fully prepared for the 4th industrial revolution. However, they were well aware of the importance of the future core nursing competencies. Therefore, if nurses increase the performance of core competencies in order of priority according to the IPA results, they will be able to independently lead the changing nursing field.

• 한국정보전자통신기술학회논문지
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• 제16권5호
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• pp.292-300
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• 2023

본 논문에서는 생성형 인공지능 관련 특허에서, 기술의 핵심 구성 요소에 기반하여 수립된 정성적 평가 지표를 활용해 특허 발굴 방법과 전략을 제시한다. 현재 특허 품질에 대한 평가는 정량적 지표에 의존하고 있으나, 기존의 정량적 지표는 생성형 인공지능 기술의 특성을 대표할 수 없어 정확한 평가가 어렵다. 이에 실제 특허의 강약을 알 수 있는 특허 청구범위를 기준으로 하여, 기술적 특성을 고려한 정성적 지표가 추가로 필요하다. 본 논문에서는 생성형 인공지능의 기술적 특성을 고려하여 새로운 평가 지표를 제안한다. 제안한 평가 지표를 활용하여 핵심 특허를 선정하였으며, 선정된 핵심 특허에 대하여 기존의 정량적 평가 방법을 통해 제안한 지표가 적합한지 확인하였다.

• 종양간호연구
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• 제4권1호
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• pp.71-81
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• 2004

The purpose of the study was to understand and explore the quality of life in cancer patients in the context of a Korean culture and society. Grounded theory method guided the data collection and analysis. A total of 10 cancer patients was selected by a theoretical sampling. The data were collected by an open question. All interviews were audio taped and transcribed verbatim. Constant comparison analysis was employed to analyze the data. As the results, eighty-five concepts and twelve categories were emerged, and "keeping well-being status" identified as a core category. Quality of life related categories derived from this study will academically contribute to the understanding and expansion of theoretical bases for quality of life of Korean cancer patients and to the contexts for the development of measurement of quality of life. Furthermore, they will function as the foundation of a intervention development for quality of life.

• Perspectives in Nursing Science
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• 제11권1호
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• pp.74-85
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• 2014

Purpose: The purpose of this study was to investigate the relationships between anxiety, depression, low anterior resection syndrome, and quality of life after lower anterior resection for rectal cancer. Methods: The participants of this study were 105 rectal cancer patients who visited the outpatient department of a hospital in Seoul for treatment or follow-up consultations. Data were collected using self-reported questionnaires and clinical records. To measure the variables, the Hospital Anxiety and Depression Scale, Low Anterior Resection Syndrome Score, and Quality of Life Questionnaire-Core 30 were utilized. Data were subsequently analyzed using the SPSS/WIN 20.0 program. Results: Low anterior resection syndrome was more severe among patients whose cancer was located closer to the anus, and had a greater range of resection in those who received neoadjuvant treatment. When anxiety, depression, and low anterior resection syndrome score were higher, quality of life scores were lower. Conclusion: These results suggest that low anterior resection syndrome may negatively impact quality of life. Therefore, it is necessary to provide patients with symptom management support/assistance through evidence-based nursing interventions, and evaluations of low anterior resection syndrome to relieve anxiety and depression, and thus enhance quality of life.

• 디지털융복합연구
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• 제13권10호
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• pp.99-106
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• 2015

현대사회의 가장 큰 변화는 유비쿼터스 환경으로의 전환이라 하겠다. 이 환경의 변화는 결국 독자적인 경영에서 각 분야의 접목을 통한 융합경영의 시대를 열게 되는 결정적인 계기가 되었다. 소비자는 새로운 혁신제품에의 욕구가 끊임없이 나타나고 기업들은 이러한 변화에 대응하기 위한 부단한 노력을 하여야 하는 것은 결국 기업의 입장에서 융합경영은 지속경영을 위한 과제가 될 것이다. 따라서 본 연구에서는 기업의 융합경영 필요성에 근거를 두고 기업의 융합경영 구성요소가 품질혁신에 어떠한 영향을 미치는 지를 살펴보고자 한다. 연구 결과, 융합경영 구성요소인 내부요인, 외부요인, 핵심요인 모두 품질혁신에 영향을 미치는 것으로 나타났다. 세부적으로는 융합경영 내부요인은 리더십, 리스크관리요인이 긍정적으로 영향을 미치는 것으로 나타났으며, 외부요인은 지식공유요인, 인프라요인이 긍정적으로 영향을 미치는 것으로 나타났다. 마지막으로 핵심요인은 기술개발요인, 교육학습요인이 긍정적인 영향을 미치는 것으로 나타났다. 이러한 결과는 향후 융합경영을 통한 기업의 경쟁력 강화의 큰 영향요인이 될 것으로 사료되며 향후 기업의 융합경영을 위한 전략적 기초로 활용될 것이다.

• Journal of Microbiology and Biotechnology
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• 제19권4호
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• pp.416-423
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• 2009

Hepatitis B core antigen(HBcAg) is an important serological marker used in the diagnosis of hepatitis B virus(HBV) infections. In the current study, a fast and efficient preparative purification protocol for truncated HBcAg from Escherichia coli disruptate was developed. The recombinant HBcAg was first captured by anion exchange expanded bed adsorption chromatography integrated with a cell disruption process. This online capture process has shortened the process time and eliminated the "hold-up" period that may be detrimental to the quality of target protein. The eluted product from the expanded bed adsorption chromatography was subsequently purified using size-exclusion chromatography. The results showed that this novel purification protocol achieved a recovery yield of 45.1% with a product purity of 88.2%, which corresponds to a purification factor of 4.5. The recovered HBcAg is still biologically active as shown by ELISA test.

• 한국건축시공학회지
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• 제7권4호
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• pp.153-159
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• 2007

Recently, as a result of the economic growth, the concentration of population towards the cities and the rise in land prices, the demand for high rise buildings has increased significantly, the trend to build high rise buildings such as the mixed-use development buildings by the domestic construction companies continues. It's very important what kind of form work system is applied on the Core Wall of the high rise buildings to determine the economic efficiency for the whole project. That's because the appropriate selection of the Formwork system enables the construction cost lower, makes the good quality of the finished concrete, reduces the construction period, assurance of safety, and further more, it enables to achieve the successful performance of the projects. Therefore, this research, after comparing the strength and the weakness between the construction methods, focus the point to provide a builder the basic data to choose the right Formwork method.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2005년도 춘계학술대회 논문집
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• pp.1493-1496
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• 2005

In this paper, we describe a simple, precise and low cost method of fabricating PDMS stamp for UV embossing. It is important to improve the replication quality of stamp because the accuracy of fabricated structure is related to that of the stamp in UV embossing. The PDMS stamp has been fabricated by the replica molding technology with ultrasonic vibration to eliminate micro-air bubbles during the fabrication process of PDMS stamp. Also, this fabrication to use ultrasonic vibration promotes PDMS solution to fill into micro channel and edge parts. We report the fabrication of an optical core using UV embossing with fabricated PDMS stamp. This fabricated core is $7\;\mu{m}\;at\;depth,\;6\;\mu{m}\;at\;width.\;This\;measured\;value\;has\;the\;difference\;below\;1\;\mu{m}$compared to the original stamp. The surface roughness of core is about 14 nm root mean square. This is satisfactory value to use low-loss optical waveguide. Our successful demonstration of precise replica technology presents an alternative approach for the stamp of UV embossing.