소리바다사건을 통해 본P2P와ISP의 책임법리

양승우,Yang, Seung-U 한국데이터베이스진흥원 2005 디지털콘텐츠 Vol.10 No.-

음악계가소리바다를상대로낸음반복제금지가처분신청이받아들여졌다. 과거중앙서버방식의‘ 소리바다1’에대해서는 서비스 중지 판결이 내려진 바 있지만 중앙서버를 두지 않는‘ 소리바다3’에 서비스 중지 판결이 내려진것은 이번이 처음이다. 이번 호에서는 소리바다사건을 통해 본 P2P와 ISP의 책임법리에 대해 소개하고자 한다.이는국내법원의공식적인견해는아님을밝혀둔다.

Evaluation of Lead Oxide Dosimeter for Quality Assurance of Electron Beam in Radiotherapy

양승우(Seungwoo Yang),한무재(Moojae Han),박성광(Sungkwang Park) 한국방사선학회 2021 한국방사선학회 논문지 Vol.15 No.1

방사선 치료 영역에서 전자선은 표재성 병변 치료에 자주 쓰인다. 전자선은 빔 경로에 것들과 상호 작용하여 선량측정에 영향을 끼치기에 정확한 측정이 요구된다. 하지만 전자선 정도관리에 관한 연구는 이루어 지고 있지 않는 실정이다. 이에 본 연구에서는 전자선 정도관리를 위한 기초연구로 PbO 기반의 선량계를 제작하였다. 그리고 6, 9, 12 MeV 에너지에 따른 재현성, 선형성을 분석하여 계측정확성과 정밀성을 평가하였다. 재현성 측정결과 6, 9, 12 MeV에서 각각 1.024%, 1.019%, 0.890%의 RSD 값으로 나타났다. 그리고 선형선 측정결과에서는 6, 9, 12 MeV에서 모두 0.9999 R2로 나타났다. 두 평가 모두 우수한 결과로 PbO 선량계의 계측정확성과 정밀성이 매우 우수한 것으로 나타났다. In radiation therapy, electron beam is often used in the treatment of superficial lesion. Accurate measurements are required because electron beam interacts with them in the beam path and affects dose measurements. However, no research has been conducted on electron beam quality assurance. in this study, PbO-based dosimeter was fabricated as a basic study for electron beam quality assurance. Thus, the reproducibility and linearity of the energy of 6, 9, and 12 MeV were analyzed to evaluate measurement accuracy and precision. Reproducibility measurements show RSD value of 1.024%, 1.019% and 0.890%, respectively, at 6, 9, and 12 MeV. linearity measurements show 0.9999 R2 at 6, 9, and 12 MeV altogether. Both evaluations show that the PbO dosimeter has very good measurement accuracy and precision with excellent results.

전자선 치료의 선량 측정 QA를 위한 PbI₂ 선량계 적용 연구

양승우(Seungwoo Yang),한무재(Moojae Han),정재훈(Jaehoon Jung),최윤선(Yunseon Choi),조흥래(Heunglae Cho),박성광(Sungkwang Park) 한국방사선학회 2020 한국방사선학회 논문지 Vol.14 No.5

전자선은 선량분포에 영향을 주는 인자가 많아 동일 설정이라도 사용 장비마다 그 특성을 파악하여 방사선 치료에 이용해야 하며, 체내 구조물에 영향이 민감하여 종양에 균일한 선량분포를 조사하기가 까다롭다. 본 연구에서는 광도전체인 PbI₂를 사용하여 선량계를 제작하였고, 선형가속기에서 6, 9, 12 MeV 전자선에 대한 전기적 특성을 분석하였다. 재현성 평가결과, RSD는 6, 9, 12 MeV 에너지에서 각각 1.1215%, 1.0160%, 0.5137%로 나타나 출력 신호가 안정적인 것을 나타내었다. 선형성 평가결과, 직선형 추세선의 신뢰도 지표 R² 값은 6, 9, 12 MeV에서 각각 0.9999, 0.9999, 0.9994로 나타나 선량이 증가함에 따라 PbI₂에 출력 신호가 비례한 것을 확인할 수 있었다. 본 연구의 PbI₂ 선량계는 전자선 측정 적용가능성이 매우 높은 것으로 판단되며, 광도전체 물질을 통한 전자선 선량계의 기초연구로 활용될 수 있을 것으로 사료된다. Electron beam have many factors that affect dose distribution, so even if identical settings are used, they should be identified and used for radiation treatment, and the effects on the structures in the body are sensitive, making it difficult to investigate uniform dose distribution on tumors. In this study, a dosimeter was produced using PbI₂ which is a photoelectric material, and electrical characteristics were analyzed for 6, 9, and 12 MeV electronics in linear accelerators. The reproducibility test results showed that RSD were 1.1215%, 1.0160%, and 0.05137% respectively at 6, 9, and 12 MeV energies, indicating that the output signals were stable. The linearity evaluation results showed that the R² values of the reliability indicator for straight line trend lines were 0.9999, 0.9999, and 0.9994, respectively, at 6, 9, and 12 MeV, to confirm that the output signal was proportional to PbI₂ as dose increased. The PbI₂ dosimeter in this study is judged to be highly applicable to electromagnet measurement and is thought to be able to be used as a basic study of electron detector through photoelectric material.

영업비밀의 쟁점 및 효과적 보호방안에 대한 검토

양승우(Yang Seung-Woo) 중앙대학교 법학연구원 2006 法學論文集 Vol.30 No.1

  During the past years, a number of trade secrets infringement cases have drawn considerable media attention as they involved illegal disclosure of valuable technology owned by some of the major Korean corporations. With the rapid growth of the information and technology industry in Korea, there is a growing awareness of the significance of trade secrets as valuable corporate property among the companies and individuals investing heavily in the research and development of state-of-the-art technologies.<BR>  Notwithstanding the importance of trade secrets, however, Korean law had traditionally been scarcely protective of trade secrets of companies. It is only recently, in the wake of several major trade secret infringement cases in Korea, that the Korean government began to take some meaningful steps to strengthen its legal regime for the protection of trade secrets. Specifically, in 2004, the Korean government amended the Trade Secret Protection Act to further strengthen the protection of trade secrets.<BR>  Protection of trade secrets is important in the sense that once trade secrets are disclosed to a third party, they experience a substantial loss in their economic utility due to their confidential nature. Furthermore, the loss of economic utility is a serious blow to the enterprise that owns trade secrets as it materially damages the competitiveness of such enterprise in the market.<BR>  Based on experience of representing numerous corporations in trade secret infringement disputes, we would advise the owners of trade secrets to consider taking the following measures in order to protect their trade secrets from illegal disclosure or use:<BR>  In case a licensor enters into a license agreement with a prospective licensee concerning a technology that is prone to illegal disclosure, the licensor should consider inserting a non-disclosure provision in the license agreement which would prohibit the licensee from unauthorized disclosure of the trade secrets transferred to the licensee under the license agreement. In this regard, it should be noted that questions may arise under Korean law concerning the issue of whether if the non-disclosure obligation has a specific term, the licensee, after the expiration of such term, is entitled to actively disclose the trade secrets to a third party without payment of any royalties to the licensor. In practice, there have been instances where licensees have engaged in freely using the trade secrets or even licensing the trade secrets to a third party after the expiration of the term of the non-disclosure obligation.<BR>  To prevent any illegal disclosure of trade secrets internally by officers or employees, an enterprise may set up employment regulations or require a written undertaking from new or resigning officers or employees to the effect that such officers or employees shall not illegally disclose or use the trade secrets of the enterprise during or after the term of their employment. Additionally, it is also possible for the enterprise to prohibit its officers or employees from being employed by any competitors of the enterprise or from competing with the enterprise themselves for a specific term after the term of their employment. In this regard, it is important to note that the term of such non-compete restriction should be a reasonable one, as an unreasonably lengthy term of a non-compete restriction could be deemed as an unreasonable usurpation on such officer"s or employee"s freedom to choose an occupation under the Korean Constitution and thus, deemed unenforceable.<BR>  An enterprise that owns trade secrets is recommended to establish and operate trade secret management rules. Moreover, the enterprise should consider designating a person responsible for protection of trade secrets of the enterprise and clearly defining the scope of his responsibilities. It is also helpful to provide regu

개발제한구역 취락지구 지정방법 개발 및 적용에 관한 연구

양승우(Seung-Woo Yang),이상경(Sang-Kyeong Lee),정창무(Chang-Mu Jung),배정남(Jeong-Nam Bae) 서울연구원 2006 서울도시연구 Vol.7 No.3

피부선량 측정을 위한 Lead-Monoxide 기반의 Silicon Passive layer PbO 선량계 개발 및 평가

양승우(Seung-Woo Yang),한무재(Moo-Jae Han),정재훈(Jae-Hoon Jung),배상일(Sang-Il Bae),문영민(Young-Min Moon),박성광(Sung-Kwang Park),김진영(Jin-Young Kim) 한국방사선학회 2021 한국방사선학회 논문지 Vol.15 No.6

피부는 방사선에 대한 민감도가 높기 때문에 방사선치료 시에 피부에 조사되는 선량을 정확하게 측정하여 과도한 피폭을 방지할 필요가 있다. 임상에서는 film, OSLD, TLD, glass 선량계등과 같은 선량계를 사용하여 피부선량을 측정하고 있지만, 이러한 선량계들은 피부곡면에서의 정확한 선량측정이 힘든 문제점이 있다. 본 논문에서는 이러한 문제를 해결하고자 인체 굴곡에 따라서 부착이 가능한 피부선량계를 개발하고 그 반응 특성을 평가하였다. 선량계 제작에는 높은 원자번호(ZPb: 82, ZO: 8)와 밀도(9.53 g/cm3)로 방사선검출 측점에서 우수한 특성을 가지고 있는 Lead oxide(PbO)와 인체 굴곡에 따라 휘어질 수 있는 silicon 바인더를 사용하여 재조하였다. 한편 PbO 물질로 제작된 선량계의 경우 산화로 인한 성능 저하가 존재하기 때문에 parylene 등을 사용하여 성능저하를 방지해오고 있었지만, 기존에 사용된 parylene은 bending에 대한 영향을 받기 때문에 silicon을 이용한 새로운 형태의 passive layer를 제작하여 피부선량계에 적용하였다. 피부선량계의 특성평가는 SEM, 재현성, 선형성을 분석하여 평가하였다. SEM 분석을 통하여 bending에 영향을 받는지 평가하였으며, 6 MeV 에너지에서의 재현성, 선형성을 평가하여 피부선량계로 적용이 가능한지 평가하였다. SEM 분석을 통하여 선량계 표면을 관찰한 결과, parylene으로 passive layer가 올라간 parylene passive layer PbO 선량계는 구부러 졌을때, 표면에 crack이 발생하였다. 그에 반해 silicon passive layer가 올라간 silicon passive layer PbO 선량계에서는 crack 이 관찰되지 않았다. 재현성 측정 결과에서 silicon passive layer PbO 선량계의 RSD는 1.47%로 평가기준 RSD 1.5%를 만족하였으며, 선형성 평가 결과에서는 R2값이 0.9998로 나타나 평가기준 R2 0.9990을 만족하였다. silicon passive layer PbO 선량계는 bending에 따른 crack이 발생하지 않으며, 재현성, 선형성에서 높은 신호안정성과 정밀성, 정확성을 보여주어 피부선량계로의 적용이 가능한 것으로 평가되었다. Due to the high sensitivity to radiation, excessive exposure needs to be prevented by accurately measuring the dose irradiated to the skin during radiation therapy. Although clinical trials use dosimeters such as film, OSLD, TLD, glass dosimeter, etc. to measure skin dose, these dosimeters have difficulty in accurate dosimetry on skin curves. In this study, to solve these problems, we developed a skin dosimeter that can be attached according to human flexion and evaluated its response characteristics. For the manufacture of the dosimeter, lead oxide (PbO) with high atomic number (ZPb: 82, ZO: 8) and density (9.53 g/cm3) and silicon binders that can bend according to human flexion were used. In the case of a dosimeter made of PbO material, the performance degradation has been prevented by using parylene and others due to the presence of degradation due to oxidation, but the previously used parylene is affected by bending, so a new form of passive layer was produced and applied to the skin dosimeter. The characteristic evaluation of the skin dosimeter was evaluated by analyzing SEM, reproducibility, and linearity. Through SEM analysis, bending was evaluated, reproducibility and linearity at 6 MeV energy were evaluated, and applicability was assessed with a skin dosimeter. As a result of observing the dosimeter surface through SEM analysis, the parylene passive layer PbO dosimeter with the positive layer raised to the parylene produced cracks on the surface when bent. On the other hand, no crack was observed in the silicon passive layer PbO dosimeter, which was raised to silicon passive layer. In the reproducibility measurement results, the RSD of the silicon passive layer PbO dosimeter was 1.47% which satisfied the evaluation criteria RSD 1.5% and the linearity evaluation results showed the R2 value of 0.9990, which satisfied the evaluation criteria R2 9990. The silicon passive layer PbO dosimeter was evaluated to be applicable to skin dosimeters by demonstrating high signal stability, precision, and accuracy in reproducibility and linearity, without cracking due to bending.

방사선근접치료 분야의 선량 측정을 위해 제조된 Lead(Ⅱ) Iodide 선량계의 적용가능성 연구

양승우(Seung-Woo Yang),한무재(Moo-Jae Han),박성광(Sung-Kwang Park) 한국방사선학회 2021 한국방사선학회 논문지 Vol.15 No.6

근접방사선치료는 방사선동위원소를 신체 내부에 넣어 종양에 방사선을 집중적으로 조사하는 치료법이다. 근접방사선 치료는 고선량율의 방사선동위원소 선원을 사용하기 때문에 정확한 선원의 위치 및 선량등을 파악하는 것이 매우 중요하다. 하지만 임상에서는 ruler, autoradiograph등을 통하여 육안으로 부정확하게 평가하는 실정이다. 이에 본 연구에서는 Lead(Ⅱ) Iodide(PbI2) 물질을 사용하여 방사선근접치료에 사용할 수 있는 선량계를 개발하고, 재현성, 선형성, PID 항목을 분석하여 적용가능성을 평가하였다. 재현성 평가결과, RSD 값은 1.41%로 평가기준 1.5%를 만족하였다. 선형성 평가결과, R2값은 0.9993으로 평가기준 0.9990을 만족하였다. PID 평가 결과 50% 선량 감약지점에서 거리의 역자승 법칙의 이론값과 비교하여 0.06 cm의 차이만을 나타내었다. 본 실험에서 제작된 선량계는 모든 평가에서 기준치를 만족하는 결과값을 나타내어 방사선근접치료 영역에서의 선량계 적용 가능성이 충분한 것으로 판단된다. Brachytherapy is a treatment in which radioactive isotopes are placed inside the body to intensively irradiate the tumor with radiation. Because brachytherapy uses a radioisotope source with a high dose rate, it is very important to know the exact location and dose of the source. However, in clinical practice, it is evaluated inaccurately with the naked eye through rulers and autoradiographs. Therefore, in this study, a dosimeter that can be used for brachytherapy was developed using a lead(II) iodide (PbI2) material, and the applicability was evaluated by analyzing the reproducibility, linearity, and PID items. As a result of reproducibility evaluation, the RSD value was 1.41%, satisfying the evaluation criteria of 1.5%. As a result of the linearity evaluation, the R2 value was 0.9993, which satisfies the evaluation criterion of 0.9990. As a result of PID evaluation, it showed only a difference of 0.06 cm compared with the theoretical value of the inverse square law of distance at the 50% dose reduction point. The dosimeter manufactured in this experiment shows results that satisfy the standard in all evaluations, so it is judged that the possibility of applying the dosimeter in the radiation brachytherapy area is sufficient.

마이크로스트립 구조 해석을 위한 Closed-Form 그린 함수

양승우(Seung-Woo Yang),김성진(Sung-Jin Kim),김건우(Gun-Woo Kim),이택경(Taek-Kyung Lee) 한국전자파학회 2008 한국전자파학회논문지 Vol.19 No.3

평면형 구조에서 공간 영역 그린 함수를 구하기 위해서는 무한 Sommerfeld 적분을 계산하여야 한다. 무한적분을 짧은 시간에 계산하기 위한 실수축 적분 방법(real axis integration method)은 주파수와 거리에 대해 넓은 범위에 걸쳐 매우 정확한 방법이지만 관측점의 수직 성분 z가 변하게 되면, 근사의 과정을 반복해야 하는 비효율성과 z가 커질수록 파수 영역 함수의 변화가 심해져 정확한 근사가 어렵다는 단점이 있다. 본 논문에서는 폐루프 적분 경로를 이용하여 파수 영역 함수를 근사화 함으로써 일반적인 마이크로스트립 구조에서 기존의 결과에 비해 정확한 closed-form 그린 함수를 구하는 방법을 제시하였다. In the layered medium, the Sommerfeld integral must be evaluated to calculate a space domain Green's function. The real axis integration method provides stable and accurate results over wide ranges of the observation distance and the singnal frequency. But this method has the inefficiency of approximation when the field point z is changed. Also, as the amplitude of z increases, the change of the spectral domain function is more rapidly. Therefore, the approximation is difficult when z becomes larger. In this paper, we propose a method to calculate an accurate closed-form Green's function for microstrip structure by using the closed-loop integration path.

Study on the Applicability of Semiconductor Compounds for Dose Measurement in Electron Beam Treatment

양승우(Seungwoo Yang),한무재(Moojae Han),신요한(Yohan Shin),정재훈(Jaehoon Jung),최윤선(Yunseon Choi),조흥래(Heunglae Cho),박성광(Sungkwang Park) 한국방사선학회 2020 한국방사선학회 논문지 Vol.14 No.1

본 연구에서는 전자선 치료에서 전자선 선량 측정 시 교차교정이 필요한 기존 평행평판형이온함을 대체하고자 하였다. 광도전성 반도체 화합물 HgI₂를 사용하여 선량계로 제작하였으며, 선형가속기에서 6, 9, 12MeV 전자선에 대한 HgI₂ 선량계의 특성을 분석하였다. 그리고 기존 선량계와의 대체가능성과 전자선 선량계로서의 적용 가능성을 평가하고 전자선 선량계 개발의 기초연구로써 활용하고자 하였다. 재현성 평가결과, RSD는 6, 9, 12 MeV 에너지에서 각각 0.4246%, 0.5054%, 0.8640%로 나타나 출력 신호가 안정적인 것을 나타내었다. 선형성 평가결과, 직선형 추세선의 신뢰도 지표 R²값은 6 MeV에서 0.9999, 9 MeV에서 0.9996, 12 MeV에서 0.9997로 나타나 선량이 증가함에 따라 HgI₂에 출력 신호가 비례한 것을 확인할 수 있었다. 본 연구의 HgI₂ 선량계는 전자선 측정 적용가능성이 매우 높은 것으로 판단되며, 전자선 검출에 대한 기초연구로 활용될 수 있을 것으로 사료된다. In this study, it was intended to replace the existing plane parallel ionization chamber, which requires cross-calibration in electron beam treatment. The semiconductor compounds HgI₂ was fabricated as detector, and the characteristics of HgI₂ detector for the 6, 9 and 12 MeV electron beam was analyzed in the linear accelerator. It was also intended to evaluate the possibility of substitution with existing detectors and their applicability as electron beam dosimetry and to use them as a basic study of the development of electronic beam dosimeter. As a result of reproducibility, RSD was 0.4246%, 0.5054%, and 0.8640% at 6, 9, and 12 MeV energy, respectively, indicating that the output signal was stable. As a result of the linearity, the R2 was 0.9999 at 6 MeV, 0.9996 at 9 MeV, and 0.9997 at 12 MeV showed that the output signal is proportional to HgI₂ as the dose is increased. The HgI₂ detector of this study is highly applicable to electron beam measurement, and it may be used as a basic research on electron beam detection.

과학데이터의 공유·활용 촉진을 위한 정책방안

양승우(Yang, seung woo) 충북대학교 법학연구소 2015 과학기술과 법 Vol.6 No.1

For scientific data, the vanguard in the era of informatics science, can function as a verification tool for research outcomes and enhance productivity of R&D from reuse of yielded scientific data, related policies are being discussed. Supervision and utilization system of scientific data is drawing attention for the importance of ‘Big data’ and the shift in paradigm of research. Legislation authorities consider distribution and utilization of scientific data play important roles in enhancing national competitiveness and now on the phase of enacting related supervision policies. Despite that other countries are attempting legal approaches on a national level for systematic supervision of scientific data, Korea lacks supplementary supervision strategies of scientific data on a national level. Korea only provides scientific data in forms of bibliography, statistic, etc. in regard to distribution & utilization system of scientific data, and the failure of incentive system in supervising and publicizing scientific data is implicated as the primary reason behind impeding development of distribution & utilization system of scientific data. Therefore in this paper, general environment and legal issues in distribution and utilization of scientific data related to national R&D program, or in other words, ⅰ) Government 3.0 and distribution & utilization policy of scientific data, ⅱ) issues in disclosure of scientific data related to Copyright Act and Public Data Act, and ⅲ) relation between distribution & utilization of scientific data and personal information were analyzed. Based on my analysis, policy alternatives for distribution & utilization of scientific data, that is, ⅰ) clarification of scientific data for registration and donation and its coordination with incentive system, ⅱ) shifting focus of strategy from scientific data supervision to utilization, ⅲ) coordination between research field and publication system when constructing repository for scientific data, and ⅳ) revision to facilitate distribution & utilization of scientific data are each proposed.