전자재료 심포지엄 : Preamorphization 과 Ti 증착방법이 Ti Salicide 특성에 미치는 영향

박대규,서유석,김영중,채무성,이상협,김삼동 ( Dae Gyu Park,You Seok Suh,Young Jung Kim,Moo Sung Chae,Sang Hyeob Lee,Sam Dong Kim ) 대한금속학회 1998 大韓金屬學會會報 Vol.11 No.5

가토의 호중성백혈구 성염색질의 정상빈도와 X선조사에 대하여

박대규,김무윤,PARK, Tae-Kyu,KIM, Moo-Yun 한국통합생물학회 1966 동물학회지 Vol.9 No.1

The frequency of sex chromatin in neutrophil leukocyte of 14 female and 4 male normal, adult rabbits was examined and compared to those of single total X-ray irradiation. 1. The average frequency of of drumstck was 9 % in female and 0.1% in male, and that of sessile nodule was 3.35% in female and 0.9% in male , in normal condition rabbit . These results fairly determined sex ratio by sex chromatin in neutrophil leukocyte. 2. The drumstick frequency reduces to half after X-irradiaton but did not show any regular tendency or variation in morphologicla form, indicating the stability of chromatin to X-irradiation. 4. The chromatin satellite was found with a reasonable frequency in the some kinds of irradiated cells, polymorphonuclear neutrophil (above 7 lobes 0 and megakarycyte.

의사결정(意思決定)의 조정(調整)과 경영지표회계(經營指標會計)에 관한 연구(硏究)

박대규,Park, Dae-Kyu 한국산학경영학회 1990 산학경영연구 Vol.3 No.-

I. Introduction: In management control, business analysis has to do with a performance evaluation and is accounted much of manager's decision making, Business indicator accounting is the vehicle of decision making and also feedback can be accomplished by it. This study is to build up a logic about what capacity for use the business indicator accounting has in making decision. Therefore it is significant to make clear the adjustment of decision and to study the function of business indicator. II. Adjustment of Decision and Accounting Work: Adjustment of decision is connected with accounting now that business indicator accounting has a function of decision making. And it should be tied up with specialization as a structure of system, organization, communication and stage system. III. Adjustment of Decision and Managerial Accounting: Managerial account makes a great contributin to the management in which each adjustment of decision should be accomplished. Let me make mention of how the adjustment of decision is accomplished concretely, and what contribution che managerial accounting makes. In an adjustment of decision, centralization and decentrialization of enterprise are very import and I think the three problems, such as the extent of sphere (procurement, production and maketing), the face of affairs (planning, implementing and controlling), the final surge (decision making and action) can be accomplished by the business indicator accounting. IV. Structure of System and Disciplinary Approach for Decision: Decision can be classified into syncronized decision and continuous decision, and is closely connected with centralization and decentralization. In the course of systematizing, the sort of decision is classified into a man in charge of decision, and object of decision, conditions of decision, and an adjusting of decision. For it's object, it has an analogical thinking and an analytic subdivision about the target area. And it is premised on getting a scientific understanding. I think a disciplinary approach remains in solving these intricate problems. V. Conclusion: In this study I dealt with a specialization as a structure in management system and a theory that adjustment is a necessary process in decision making. For an adjustment of decision, exchanging informations and communication are necessary, and accounting is in charge of the process. And then the centralization and decentralization of decision should be connected in the way of adjustment of decision. In case of decentralization, the adjustment of decision is accomplished by the exchanging informations through feedback, and in case of centralization, by the all-round planning. And also I found that syncronized decision and decentralized decision are linked together. It is natural that the function of business indicator accounting is called for to render more services for it. Therefore, according to the extent of centralization and decentralization accounting to adjust the decision, can be various. Consequently, in relation to the structure of system. I think it is necessary to make a theoretical and empirical study of the business indicator accounting.

이층 배선공정에서 층간 절연막의 층덮힘성 연구 : PECVD와 $O_3$ThCVD 산화막

박대규,김정태,고철기,Park, Dae-Gyu,Kim, Chung-Tae,Go, Cheol-Gi 한국재료학회 1992 한국재료학회지 Vol.2 No.3

서브마이크론 설계규칙을 갖는 소자의 이층 배선 공정에서 다챔버 장비를 이용한 금속 층간절연막의 공극없는 평탄화를 위하여 PECVD와 $O_3$ ThCVD산화막의 증착시 층덮힘성을 연구하였다. 산화막의 두께가 증가됨에 따라 변화되는 순간단차비의 개념을 도입하여 공극형성의 개시점을 예측할 수 있는 관계식을 모델링하였고, 금속배선간격의 초기 단차비가 다양한 패턴에서 산화막의 두께에 따른 순간 단차비의 변화를 조사하였다. 모델링 검정결과 $5^{\circ}$이하의 re-entrant각을 갖는 TEOS에 의한 PECVO 산화막의 순간단차비가 모델링에 잘 일치하였다. 공극없는 평탄화는 제1층의 PECVD 산화막의 순간 단차비를 0.8이하로 유지하거나 Ar sputter식각을 통하여 산화막의 모서리에 경사를 준후 층덮힘성이 우수한 $O_3$ ThCVD산화막을 증착함으로써 가능하였다. $O_3$ ThCVD산화막의 etchback이 non etchback공정에 비하여 via접쪽저항체인에서 높은 수율을 보였으며, via접촉저항은 $0.1~0.3{\Omega}/{\mu}m^2$로 나타났다. An investigation on the step-coverage of PECVD and $O_3$ ThCVD oxides was undertaken to implement into the void-free inter metal dielectric planarization using multi-chamber system for the submicron double level metallization. At various initial aspect ratios the instantaneous aspect ratios were measured through modelling and experiment by depositing the oxides up to $0.9{\mu}m$ in thickness in order to monitor the onset of void formation. The modelling was found to be in a good agreement with the observed instantaneous aspect ratio of TEOS-based PECVD oxide whose re-entrant angle was less than $5^{\circ}$. It is demonstrated that either keeping the instantaneous aspect ratio of PECVD oxide as a first layer less than a factor of 0.8 or employing Ar sputter etch to create sloped oxide edge ensures the void-free planarization after$O_3$ ThCVD oxide deposition whose step-coverage is superior to PECVD oxide. It has been observed that $O_3$ ThCVD oxide etchback scheme has shown higher yield of via contact chain than non etchback process, with resistance per via contact of $0.1~0.3{\Omega}/{\mu}m^2$.

W 활성소결체의 Ni-rich 상의 양이 응력 파단 성질에 미치는 영향에 관한 연구

박대규,김수성,이경섭,Park, Dae-Gyu,Kim, Su-Seong,Lee, Kyung-Sub 한국재료학회 1992 한국재료학회지 Vol.2 No.4

W-0.4wt% Ni, W-0.8wt% Ni 활성 소결체의 Ni rich상의 양이 응력 파단 성질에 미치는 영향을 조사하기 위하여, direct load creep tester를 사용, 100$0^{\circ}C$~120$0^{\circ}C$, 수소 분위기에서 응력 파단시험을 하였다. 100시간 응력 파단 강도는 니켈 함량이 0.4wt%, 0.8wt%로 증가 함에 따라, W-0.2wt% Ni의 경우와 비교하여 100$0^{\circ}C$에서 43%, 90%, $1100^{\circ}C에서$ 35%, 60% 높았으며, 이는 초기 결정립 조대화, 비이론밀도의 상승과 시험 중 결정립 성장 때문으로 생각된다. W-0.4wt% Ni의 크리프변형 활성화 에너지는 81.3kca1/mol으로, 변형기구는 Ni rich 상을 통한 W 확산과 결정립 내부 변형이다. 응력 파단 시험 후, 파단면은 입계 파괴 양상을 나타내었다. 소결시 생성된 고립 기공이 결정입계에 있는 Ni rich상을 따라 전파하였기 때문이다. The effect of Ni-rich phase on the stress-rupture properties of Ni mlcroalloyed W were studied using direct load creep tester at 100$0^{\circ}C$, 110$0^{\circ}C$, and 120$0^{\circ}C$ in $H_2.$ The stress rupture strength of 100hrs. of W-0.4wt% Ni was 43% higher at 100$0^{\circ}C$ and 35% higher at 110 $0^{\circ}C$than that of W-0.2wt% Ni due to the larger initial grain size, the higher relative density and the higher grain growth during test. That of W-0.8wt% Ni was 90% higher at 100$0^{\circ}C$ and 60% higher at 110$0^{\circ}C$ than that of W-0.2wt% Ni. The activation energy of W-0.4wt% Ni for creep was 81.3 Kcal/mole. It was considered that creep deformation was controlled by the diffusion of W in the Ni rich phase between the grains and the deformation of grains. All of the specimens showed intergranular fracture by grain boundary cavitation and growth of cavity throughout the entire spcimen cross-section.

인간관계모형(人間關係模型)을 통한 예산관리(豫算管理)시스템 상황론(狀況論)

박대규,Park, Dae-Kyu 한국산학경영학회 1992 산학경영연구 Vol.5 No.-

This paper has an aim to look into whether it is possible for us to make an approach the budgeting control with the theory of human relation. This is only a traditional method and also it is open to criticism. I think modem budgetion control should be debeloped by the contingency theory. As the environment is changing continuously, the budgeting control system which can be adapted for this change should be built up. This paper consists of management control, human relation model method and changes of budgeting control.

[Ⅱ. 一般硏究論文] 전략경영과 관리회계와의 관련성 연구

박대규(Park Dae-Kyu) 한국전통상학회 2003 韓國傳統商學硏究 Vol.17 No.1

Strategic management is an essential decision making which can make and maintain competitive advantage. This is a modern concept which takes an important part in management. Therefore, decision maker should perceive the need of establishing suitable strategy. In general, decision maker usually perform decision making according to various strategic thoughts. In relation to this, strategic planning requires managerial accounting. Now managerial method needs to be established in its theoretical background and related with strategic management and managerial accounting. That is, the relationship between strategic management and managerial accounting made its appearance under the necessity of our times. The performance of strategic management should be done with its focus on the role of managerial accounting. Considering the characteristics of this area of study that emphasize practical use, researches on the relationship with strategic managerial accounting are required. Managerial accounting will contribute to strategic comparative analysis and carrying out the policy in real situation.

INCOLOY 800 합금의 프레팅 피로수명에 관한 연구

박대규(Dae-Kyu Park),우승완(Seung-Wan Woo),배용탁(Yong-Tak Bae),정일섭(Il-Sub Chung),채영석(Young-Suck Chai),권재도(Jae-Do Kwon) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11

Mechanical breakdown often comes from the fatigue in many structural parts and nuclear power plants. Among the fatigue phenomenon, especially fretting fatigue occurs in mechanical joints showing small relative movements between contact surfaces. Although the research was developed for one hundred years, occurrence mechanism is not clearly identified yet. INCOLOY alloy 800 is a iron-nickel-chromium alloy having excellent resistance to many corrosive aqueous media and high-temperature atmospheres. This alloy is used extensively in the nuclear power plants industry, the chemical industry, the heat-treating industry and the electronic industry. In this paper, the effect of fretting damage on fatigue behavior for INCOLOY alloy 800 was studied. Also, various kinds of mechanical tests such as tension and plain fatigue tests are performed. Fretting fatigue tests were carried out with flat-flat contact configuration using a bridge type contact pad and plate type specimen. Through these experiments, it is found that the fretting fatigue strength decreased about 50% compared to the plain fatigue strength. In fretting fatigue, the oblique micro-cracks at an earlier stage are initiated. These results can be used as basic data in a structural integrity evaluation of heat and corrosion resisting alloy considering fretting damages.

쓰기 지연 기법이 SSD의 읽기 성능에 끼치는 영향 분석

박대규(Daekyu Park),강동현(Dong Hyun Kang),엄영익(Young Ik Eom) 한국정보과학회 2017 한국정보과학회 학술발표논문집 Vol.2017 No.12

초고층 전단벽-골조 아웃리거 시스템의 P-Δ 효과를 고려한 비선형해석 모델 개발

박대규(Park Dae-Kyu),김진만(Kim Jin-Man),이재홍(Lee Jae-Hong) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.5

In this paper, the P-Δ behaviour of coupled shear wall-frame systems is analyzed. The governing equations of the wall-frame systems with outrigger trusses are formulated through the continuum approach. then the whole structure is idealized as a shear-flexural cantilever with rotational spring. The effect of shear and flexural deformation of the wall-frame and outrigger trusses are considered and incorporated in the formulation of the governing equations. Geometric nonlinearity is included in sense if von Karman, and the analytical results. nonlinear analysis of the wall-frame structures with and without outriggers are performed by using finite element analysis incorporated with Newton-Raphson method. The proposed method is found to be simple and efficient, provides reasonably accurate results in the early design stage of tall building structures.