• 정보관리학회지
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• 제17권4호
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• pp.157-170
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• 2000

색상에 의한 내용기반 이미지 검색 기법에 있어서 조명과 관찰자의 환경과 같은 주변 조건을 반영한 시지각 색상 모형은 사진 이미지속에 나타나는 반사광과 그림자와 같은 영역의 색상 정보를 알 수 없는 것이라고 간주하고 그 정보를 포기한다는 단점이 있다. 이 연구에서는 그와 같은 알 수 없는 색상을 빛의 방향에 의해 추정하여 검색 시스템의 효율을 향상시키는데 기여하려 하였으며, 검색 실험 결과 이러한 추정 작업과 검색 효율성 향상 사이에는 유의미한 관계가 존재하고 있는 것으로 결론지을 수 있었다.

• International Journal of Computer Science & Network Security
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• 제21권6호
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• pp.61-70
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• 2021

Within the article, forms of innovation structures are systematized, and those that exist in Ukraine are identified, their features, purpose and functions are clarified, activities and current state of their functioning are analyzed. It is proved that in the conditions of digital economy, domestic innovation structures are underdeveloped and do not fulfill their leading role at the present stage of innovative development of the country. To understand the importance of effective operation of innovation infrastructure, the main world models of innovation development are considered, and the directions of using the experience of their functioning for Ukraine are determined. The main indicators of innovation activity of Ukraine in the context of regions are analyzed. There is a significant differentiation of innovation indicators in the regional context. The cartographic analysis of innovative activity of regions is presented. The mechanism of definition and implementation of priority directions of innovative activity in the context of the digital economy development is offered.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.191-192
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• 2005

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(2)
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• pp.1037-1039
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• 2005

• 한국해안해양공학회:학술대회논문집
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• 한국해안해양공학회 1992년도 정기학술강연회 발표논문 초록집
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• pp.72-76
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• 1992

평면파 수치모형 해석시 가상경계에 평행한 입사각을 갖거나, 다방향의 입사파가 가상경계로 동시에 입사되는 경우에는 무처리 시 수치 반사가 발생되므로 해에 악영향을 미친다. 따라서 이러한 경우에 대해 가상경계에서 파랑 Energy 투명하게 통과시키는 고차원 무반사 경계조건에 대해 연구하였다. 이들 조건식의 수학적 안정성을 분석하기 위해 phperbolic system에서 normal-mode 분석을 수행하였다. 1차 및 2차의 고차원 무반사 경계조건을 Galerkin 가중잔차법을 이용 유한요소 모형에 적용하였으며 이들에 대한 특성을 시험하기 위해 수치실험을 실시하였다.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.363.1-363.1
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• 2002

Costunolide. a sesquiterpene lactone is isolated from Magnolia Sieboldi. It is known to possess antitumour and anti-inflammatory activities. This compound is synthesized from Ihe easily available decalin dione using the ring cleavage approach to construct the ten-membered ring system. The two keys points in this work are the chiral inductionon the allyl alcohol moiety using Sharpless epoxidation reaction and opening of the eopxide with an organocuprate reagent which leads to a $\alpha$-exomethylene lactone. (omitted)

• 한국콘텐츠학회논문지
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• 제18권7호
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• pp.177-193
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• 2018

상시적으로 변화하는 의료 환경에 적응하고 다양한 외부 의료기관과의 정보 공유를 위해 의료기관 프로세스를 통합 관리할 수 있는 비즈니스 프로세스 관리 시스템에 대한 중요성이 증가하고 있다. 비즈니스 프로세스 관리 시스템은 그래프 기반의 BPMN 프로세스 모델을 웹서비스 환경의 실행언어인 WS-BPEL로 변환한 후 프로세스 엔진을 통해 실행하는 자동화 프로세스 도구이다. 하지만 BPMN 프로세스 모델은 다수의 모호성 및 구조적 불일치로 인해 WS-BPEL로의 변환이 어려울 수 있으며 프로세스 실행 시 실행 오류를 초래할 수 있는 구조적 이상 현상들을 포함할 수 있다. 본 논문에서는 의료기관 프로세스 통합 관리를 위해 모호성 및 구조적 불일치가 제거된 정형화된 BPMN 프로세스 모델 및 구조적 이상 현상 검출 방법을 제시한다. IHE 프로파일을 적용한 사례연구를 통해 정형화된 BPMN 프로세스 모델을 제시하고 및 구조적 이상 현상 검증을 실시한다. 기존의 연구 방법과의 비교 실험을 통해 제안된 기법의 우수성을 보인다.

• Imaging Science in Dentistry
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• 제35권4호
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• pp.185-190
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• 2005

Purpose: Once the decision has been made to adopt an integrated medical information system (IMIS), there are a number of issues to overcome. Users need to be aware of the impact the change will make on end users and be prepared to address issues that arise before they become problems. The purpose of this study is to investigate the benefits and unexpected problems encountered in the implementation of IMIS and to determine a useful framework for IMIS. Materials and Methods: The Yonsei University Dental Hospital is steadily constructing an IMIS. The vendor's PACS software, Piview STAR, supports transactions between workstations that are approved to integrating the healthcare enterprise (IHE) with security function. It is necessary to develop an excellent framework that is good for the patient, healthcare provider and information system vendors, in an expert, efficient, and cost-effective manner. Results : The problems encountered with IMIS implementation were high initial investments, delay of EMR enforcement, underdevelopment of digital radiographic appliances and software and insufficient educational training for users. Conclusions: The clinical environments of dental IMIS is some different from the medical situation. The best way to overcome these differences is to establish a gold standard of dental IMIS integration, which estimates the cost payback. The IHE and its technical framework are good for the patient, the health care provider and all information systems vendors.

• 대한디지털의료영상학회논문지
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• 제13권1호
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• pp.33-38
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• 2011

Now a days, there's many change over for PACS among the most of hospital and it standard for DICOM 3.0. These kind of using of DICOM 3.0 improves increasing of medical imaging exchange and service for patient. However, there's some problems of compatibility caused during carry out CD and DVD from hospital. For this reason, this thesis analyzed patients image targeting those storages requested to hospitals in Seoul by using Validation Toolkit which is recommended from KFDA. The analyze type is like this. Make 100 data, total 500, each of MRI CT Plain x-ray Ultrasound PET-CT images and analyzed type of error occurred and loyalty of information. If express percentage of error occurred statistically, we can get a result as follows MRI 5%, Plain x-ray 11%, CT 18%, US 25%, PET-CT 30%. The reson why percentage of error occurred in PET-CT is because of imperfective support and we could notice that we weren't devoted to information. Even though, PET-CT showed highest percentage of error occurred, currently DICOM data improved a lot compare to past. Moreover, it should be devoted to rule of IHE TOOL or DICOM. In conclusion, we can help radiographer to analyze information of image by providing clues for solving primary problem and further more, each of PACS company or equipment company can enhance fidelity for following standard of image information through realizing the actual problem during transfer of image information.

• International Journal of Computer Science & Network Security
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• 제21권9호
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• pp.118-124
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• 2021

The article examines the formation of a competitive paradigm of economic security of industrial enterprises in the formation of a circular economy. The basic laws of industrial enterprises are formed, which determined the characteristics of competitive positions and threats. The basic competitive concepts and their application at maintenance of economic safety of the industrial enterprises in the conditions of formation of circular economy are described. Thus, the technological approach to the formation of a competitive paradigm is based on production technologies, opportunities for technological modernization and development of infrastructure and intellectual competencies. The institutional concept reveals the regulatory mechanisms for ensuring competitiveness through the protectionism of national industrial enterprises, standardization and regulation of market imbalances. The innovation-investment approach within the competitive paradigm is also manifested in the creation of competitive advantages due to the presence of active innovative developments and their commercialization, knowledge and competencies of staff, capitalization of intelligence and communications, constant updating of infrastructure and technologies. Collectively, innovation and investment effects on the level of economic security allow industrial enterprises to ensure resilience to increasing competition, the emergence of new market challenges in the formation of a circular economy. A strategic approach to the application of a competitive paradigm to ensure the economic security of industrial enterprises allows you to justify the prospects for development and design behavioral models to predict and assess potential threats. The concept of system management is based on the complexity of threat analysis, the integrity of the economic security system, system-forming functions and patterns of implementation of industrial development tasks in the formation of a circular economy. The application of the described concepts is formalized by the authors through the definition of the basic patterns, directions and characteristics of their impact on the elements of the security system of industrial enterprises in the formation of a circular economy.