Definition of Security Practices in STP for SLMM

Tai-Hoon Kim 보안공학연구지원센터 2008 International Journal of Hybrid Information Techno Vol.1 No.1

To manage security level of information system (IS), organizations must select security practices (SP) first, and then apply them according to security level. SP can be divided into 2 groups security management part (SMP) and security technology part (STP), and some SPs in SMP were proposed already by Drs. Tai-hoon Kim and Kouichi Sakurai [1]. In this paper, we propose some SPs in STP to construct STP for Security Level Management Model (SLMM).

OS Security Enhancement System by Considering Security Level

Tai-Hoon Kim,Gil-cheol Park,Seok-soo Kim 보안공학연구지원센터 2007 International Journal of Multimedia and Ubiquitous Vol.2 No.3

Trusted operating systems (OS) provide the basic security mechanisms and services that allow a computer system to protect, distinguish, and separate classified data. Trusted operating systems have been developed since the early 1980s and began to receive National Security Agency (NSA) evaluation in 1984. The researches about trusted OS are proceeding over the world, and new product type using the loadable security kernel module (LSKM) or dynamic link library (DLL) is being developed. Most important concept in this paper is Security Level proposed by Dr. Tai-hoon Kim, because this concept should be considered in every operational environment. This paper assumed security level 1st proposed by Dr. Taihoon Kim, and proposes a special type of product using LSKM and specific conditions for operational environment should be.

POS System Design in Security Level 1st

Seok-soo Kim,Tai-hoon Kim 보안공학연구지원센터 2007 International Journal of Multimedia and Ubiquitous Vol.2 No.2

POS system is a supply net administration system for customer management. It becomes an essential element in distribution industry to construct database, and uses XML-Encryption to complement PKI techniques and standards for security. POS system has four advantages. First, it does not have to be certificated and transmit data every time because there is no server. Second, it can integrate database by using XML and improve portability of program itself. Third, transmitted data is safe because of XML-Encryption. Fourth, processing speed will be faster because it gathers data from data transmission. All systems should be designed by considering security level to reduce non-necessary burdens. The concept of security level management was developed by Dr. Tai-hoon Kim a few months ago, and this paper used this idea. In this paper, Security Level 1st environment was considered to design POS systems.

선경축소에 따른 슈퍼데크의 구조안전성 평가에 관한 실험적 연구

태경훈,이정한,이원호 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

SuperDeck is as the deck of assembling Kaiser, cubical rebar for slab, with corrugated zinc galvanized sheet iron at manufactory, given the improvement on design, manufacture, and performance for construction work of cast-in-place reinforced concrete slab by enabling to cast concrete directly without the form work. Nowadays, in general, simplified 2D analysis and allowable stress design are used as for the method of analyzing and designing of SuperDeck System. Since this method contradicts with 3D analysis, used for the development of SD300 at The Korean Structural Engineers Association, and limit state design, the comparison and examination of these two methods and the maximum span, which allows for construction, are needed. To compare the simplified 2D analysis applied to allowable stress design with 3D analysis applied to limit state design, 8 specimen are manufactured. Main variables include the depth of slab, the length of span, the diameter of bottom bar and lattice bar, and the presence of corrugated zinc galvanized sheet iron. From the comparison result of test and analysis, in case of using under D10 as bottom bar, 3D analysis is more appropriate.

Adamkiewicz 동맥의 폐색에 의한 척수경색 1례

이광훈,이종걸,이태연,신동익,이성현,이상수,한설희,차상훈 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

다공질 규소의 라만 산란

김태균,김영유,서영석,조창호,나훈균 公州大學校 基礎科學硏究所 1998 自然科學硏究 Vol.7 No.-

양극반응 전류밀도를 변화시키면서 다공질 규소를 제작하여 라만산란을 관측하였다. 전류밀도가 증가함에 따라 라만신호는 520.5㎝-₁에서 멀어졌으며, 봉우리의 반치폭이 증가하였다. 또한 전류밀도 증가에 따라 원통형 다공질 결정의 직경은 감소함이 계산되었으며, 길이가 길어짐을 AFM으로 관찰하였다. The Raman scattering was studied from the porous silicons which were made by changing anodization current. As the current density was increased, it was observed that Raman was gradually far from the value of 520.5 cm￣¹and the full width half maximum increased. The decrease of radius of cylindrical porous crystal was calculated and the increase of its length was investigated through AFM.

상아질 결합제의 생체적합성에 관한 연구

김성훈,진태호 원광대학교 치의학연구소 2003 圓光齒醫學 Vol.12 No.3

This study was investigated to evaluate the biocompatibility of dentin bonding agents. The 4th generation dentin bonding agents such as Scothbond Multi-Purpose(3M, USA), Clearfil Liner Bond 2(Kuraray, Japan), All Bond 2(Bisco, USA), and 5th generation dentin bonding agents such as Single bond(3M, USA) Prime & Bond NT(Dentsply, Germany), and One Step(Bisco, USA) were used in this study. The viability of normal human pulp cell, gingival fibroblast, immortalized gingival fibroblast and HaCaT cell was measured in vim for evaluation of cytotoxicity on dentin bonding agents, and the response of pulp tissue(organotypic tooth slice culture) was analyzed and evaluated with light microscope after application of dentin bonding agents at cutting incisor edge of rats. The results obtained from this study were as follows : I. The gingival fibroblast was the most sensitive to toxicity of dentin bonding and HaCaT cell was the least. 2. The cytotoxicity of One step was low and that of ScotchbondScotchbond Multi-purpose was high in pulp cell and immortalizedginggival fibroblast. 3. The cytotoxicity of the 5th generation dentin bonding agent was lower than that of 4th generation dentin bonding agent in gingival fibroblast 4. Scotchbond Multi-Purpose showed the highest cytotoxicity comparativelyn most cells including HaCaT cell. 5. At 2 days after cultivation of tooth slice organ, them was no significant change in alveolar bone and periodontal ligament according to dentin boading apts. Odntoblasts and pulp cell population was excellent in the 5th generation dentin bonding agents after 2 days cultivation, and the similar response of odntoblasts and pulp cell was revealedafter 10 days cultivation. Collectively, in vim, cell viability and tooth slice organ culture test revealed similar results. From this study, we find out the some tendency that Scotbond Milti-Purpose is relatively more cytotoxic and One-Step is less

수질환경 측정용 수원대 DO센서의 실험실적 성능 평가

金胎辰,李相勳 수원대학교 산업기술연구소 1995 산업기술연구소논문집 Vol.10 No.-

The Dissolved Oxygen(DO) electrode fabricated by the research team at the University of Suwon was experimentally compared with the YSI DO electrode which is the most widely-used DO electrode in Korea. The sensitivity of the two electrodes were measured under various DO conditions and different pH environment. The findings of the experiment are as follows. Firstly, in DO range between 1.5 and 7.7㎎/ℓ, the two electrodes showed a good agreement in sensitivity. Secondly, in pH range between 3.0 and 10.0, the two electrodes showed a good agreement in sensitivity. The maximum difference was within the range of experimental error. It was concluded that the locally fabricated electrode performed as good as YSI DO electrode in its sensitivities of DO and pH.

中共初期의 宣傳活動 分析

李台薰 韓國外國語大學校 外國學綜合硏究센터 中國硏究所 1981 中國硏究 Vol.5 No.-

唾線細胞生長에 따른 細胞質, 染色體 및 Mitochondria의 相關性에 關하여 : 第 一 報 (基礎調査)

孔泰勳,李海浜 동국대학교 농림과학연구소 1967 農林科學 論文集 Vol.1 No.-

This study was to investigate the correlations between cytoplasm volume, nucleus volume and mitochondria numbers, in the larva period of Chironomus dosalis M.. The results were as follows; 1. Cytoplasm volume, nucleus volume and mitochondria numbers of each cell showed their parallel increasing in the larva period and in 6 or 7 days before pupation, cytoplasm volume increased more rapidly. 2. After hatching, during its growth to pupation, increasing of the nucleus volume parallel with cytoplasm volume 3. In 7 days before pupation, cytoplasm volume shoed a great increasing grade but distribution number of mitochondria also increased continuously. 4. There was no way to find any correlations between cytoplasm volume and mitochondria numbers, mitochondria numbers and chromosome volume. However, they were believed to preserve their increasing to keep physiological balnace.