NEMO와 결합된 Hierarchical Mobile IPv6에서 멀티캐스팅을 이용한 핸드오프 지원 기법

노경택(Rho Kyung_Taeg) 한국컴퓨터정보학회 2004 韓國컴퓨터情報學會論文誌 Vol.9 No.3

본 논문은 이동 단말(mobile Node)의 핸드오프 발생시 끊김없는 핸드오프(seamless handoff)를 지원하기 위한 기법을 제안하고자 한다. 신호세기의 감소로 인한 핸드오프가 발생 가능한 상태일 때 이동단말은 기존의 CoA(Care-of Address) 외에 감지되는 신호를 통한 새로운 nCoA들을 만들어 자신의 영역을 담당하는 MAP(Mobility Anchor Point)에게 이들 nCoA에 대한 일시적인 바인딩 업데이트 tempBU(temporary Binding Update) 메시지를 보낸다. MAP은 전달받은 새로운 nCoA 주소를 포함한 바인딩 업데이트 메시지를 받아서 기존의 바인딩 정보 외에 새로운 바인딩 정보를 일시적으로 바인딩 캐쉬에 저장한다. 결국 이동단말이 새로운 액세스 라우터(nAR) 영역에 진입하여 확정된 바인딩 업데이트 메시지를 보낼 때까지 멀티캐스팅을 함으로써 끊김없는 핸드오프를 보장하는 기법을 제시한다. This paper proposes a seamless handoff scheme that enables a mobile node to continue a session when moving to an overlapping area. During handoff due to the weakness of signaling, mobile node makes new Care-of Addresses using signals received from access router when MN reaches the edge of its area in addition to its current CoA, and it sends temporary binding update messages to Mobility Anchor Point which manage the area covering MN. MAP receives that binding update messages from MN, and temporarily stores new binding informations from them to its binding cache besides existing binding information for MN. This scheme ensures a seamlessly handoff using multicasting until MN enter a new access router area and sends a confirmed binding update message to MAP.

풍력발전기의 설비이용률 계산을 위한 확률밀도함수의 비교

강택근,허종철,좌종근 제주대학교 공과대학 첨단기술연구소 2003 尖端技術硏究所論文集 Vol.14 No.1

The Weibull probability density function and the Rayleigh function are compared by analyzing the capacity factors which are computed using the probability density functions with different mean wind speeds. For this analysis, the wind speed means of arithmetic, root mean square, cubic mean cuberoot, and standard deviations are computed from the measured wind speed data of a specific site, and the coefficients of probability density functions are calculated. The capacity factors for Vestas 850[kW] wind turbine are calculated and analyzed. The results show that the wind speed frequency curve by Rayleigh function is more close to the actual curve than by Weibull function. The more the wind speed frequency curve is close to the actual one, the more the capacity factors become large values.

국내 통합학급 운영에 대한 학부모들의 인식 및 지원요구

권택환,박현옥,김은주 국립특수교육원 2008 특수교육연구 Vol.15 No.1

본 연구는 국내 통합학급 운영 실태에 대한 학부모들의 인식과 지원요구를 살펴보기 위하여 실시되었다. 그 결과 부모들은 일반학급 입급 시 장애학생들의 사회성에 대한 기대가 가장 큰 것으로 나타났으며 필요한 정보들은 주로 다른 장애학생의 부모나 특수교육관련 전문가 및 특수학급 교사에게 의존하고 있는 것으로 나타났다. 장애학생을 위한 개별화교육 프로그램의 작성에 부모 참여 수준은 매우 낮은 것으로 나타났으며 자녀의 학교생활에 관련하여서는 교과활동의 어려움, 문제행동, 친구들로부터의 따돌림 등으로 인해서 학교생활에 어려움을 겪고 있는 것으로 보았다. 또한 사회성에 대한 기대가 높음에도 불구하고 자녀가 일반 친구들로부터 언어적 놀림이나 따돌림을 받고 있는 것이 교우관계의 어려움인 것으로 보고하였다. 이러한 연구 결과에 따라 추후 통합 교육의 질적 향상을 위한 논의와 제언을 제시하였다. The study was conducted to understand the parent's perception and demand on the inclusive classroom. We surveyed nationwide parents who have student with disabilities enrolled in inclusive classroom. The survey showed that, for the most, the parents wanted their children to be socialized, And, they depended mostly on other parents, special classroom teacher and other experts in special education field for information on school adjustment, school work of their children. Also, the parents' participation on IEP meeting were very low. For their children's difficulty in school, the parents were quite aware of problem behavior, low achievement on general curriculum, and maliciously alienating fellow classmates. The verbal ridicule or alienation from classmate worked as an obstruction in making friends within the classroom. Taking the results of the study, we discussed and suggested to improve the quality of inclusive classroom.

Equivariant map의 Coindex에 대하여

장택상 群山大學校 自然科學硏究所 1991 自然科學硏究 Vol.6 No.-

E을 표준적 involution을 갖는 바나크공간, X를 paracompact T₂공간으로서 고정점이 없는 involution T을 갖고 φ:X → E을 proper equivariant map라 하자. 만약 φ가 proper이고 finitely bounded이고 f는 φ의 compact equivariant perturbation ??이라 할 때 φ와 f의 coindex가 같으며 (정리 6), φ가 proper, bounded equivariant map이고 ??={E??} i=1, 2,…,가 E에서의 flag라면 ??에 대하여 φ와 f의 coindex가 같음을 보였다(정리 8). Let E be a Banach space with its standard involution(one fixed point, the origin). Let X be a paracompact Hausdorff space with a fixed point free involution T, and let φ:X → E be a proper equivariant map. In this note, we shall prove that if φ is proper and finitely bounded and f is a compact equivariant perturbation of φ, then the coindex of φ equals to the coindex of f(Theorem 6) and if φ is proper and bounded equivariant map and ??={??} i=1, 2, … a flag in E, then the coindex of φ equals to the coindex of f with respect to (Theorem 8).

기본교육과정 과학과의 STS교육 도입배경과 시사점

권택환 국립특수교육원 2001 특수교육 교육과정 연구 Vol.2 No.-

발달장애 학생 과학교육의 궁극적 목표는 실생활의 적용이다. 최근 과학교육에서 과학의 사회적 의미, 과학과 기술과의 관계, 과학과 실생활과의 관계를 강조하는 이른바 STS(과학-기술-사회)교육 과정 운동이 일어나고 있다. 본 연구에서는 제 7차 기본교육과정 과학과에 구체적으로 반영되고 있고, 과학교육의 주요 관심영역인 STS 교육의 개념과 도입배경, STS 교육의 목적, STS 교육 내용의 선정과 조직, STS 학습지도 방법 등을 살펴보고, 발달장애 학생 과학과 지도 방법에 대한 시사점을 제시하고 있다. The ultimate goal of science education for students with developmental disabilities is that the students should learn how to apply this knowledge to real life situations. There has been a recent movement in science education, known as STS (Science-Technology-Society), which emphasizes the social meaning of science, the relationship between science and technology, the relationship between science and the real life. The present study investigated how the concept of STS education was reflected in science education in the 7^th National basic curriculum. Consideration is the investigation was given to how the background, introduction, of the STS course. In addition, the study explored th purpose, selection, and organization of the content of the STS course. Issues concerning methods for teaching science to students with developmental disabilities are discussed.

앤드 밀 材料의 摩擦熔接에 관한 硏究

민택기 忠南大學校 産業技術硏究所 1993 산업기술연구논문집 Vol.8 No.2

This report deals with a study on characteristics of friction welding of high speed steel to high carbon steel. Main results obtained in this study are as follows: 1) In friction welding of high speed steel(SKH9) to high carbon steel(STC7), the optimization of welding strength could be established by experimental. 2) At the area of weld interface, the tensile strength under 2.0sec heating time is shown 48.6kgf/㎟, which is the higher than base metal (STC7: 42.7kgf/㎟). 3) Heat-affected zone where hardness is lower than base metals spreads 650㎛ far from the friction weld interface in the SKH9 part and STC7 part.

관광전문인력 양성을 위한 컴벤션기획사자격제도 개선에 관한 연구

남택영,염명하 문화관광연구학회 2003 문화관광연구 Vol.5 No.2

The main purpose of this study is finding the betterment method of convention planner license for tourism manpower training. Convention is a communication channel to arbitrate in conflicting interests, encourage mutual exchanges such as information and materials and promote friendship among countries. Convention industry should be prepared with a long-term in a lot of sectors, for example, hotel, transportation, tourism, publication, technology, ceremony, and the like. Convention planner is very important a part of convention &as to manage every work in its field respectively from budgeting, planning, marketing, and registering to accommodation, seminars, tourism, and social gathering. In this study, I explained theory of convention planner license and discussed problem of convention planner and then, found the betterment method of convention planner license for tourism manpower training.

Basic Properties Of CSL-ALGEBRAS

최택영 안동대학교 기초과학연구소 1990 基礎科學 硏究論文集 Vol.1 No.1

Let H be a complex Hilbert space and let Abe a subalgebra of B(H), the algebra of all bounded operators acting on H. An algebra Ais self-adjoint of A is in Afor every A in A. Otherwise, A is called a non-self-adjoint algebra. If L is a lattice of orthogonal projections acting on H, AlgL denotes the algebra of all bounded operators acting on H that leave invariant every orthogonal projection in L. A subspace lattice L is a strongly closed lattice of orthogonal projections acting on H, containing 0 and 1. Dually, if A is a subalgebra of B(H), then Lat A is the lattice of all orthogonal projections invariant for each operator in A. An algebra A is reflexve if A=AlgLatA and a lattice L is reflexive if L=LatAlgL. A lattice L is a commutative subspace lattice, or CSL, if each pair of projections in L communtes; Alg L is then called a CSL-algebra.

관광호텔 마케팅 활성화 방안에 관한연구 : 서울지역 특1급 호텔 객실상품을 중심으로 Based on the Rooms of Super deluxe hotels in Seoul

남택영 경기대학교 호텔경영연구소 1997 호텔경영연구논총 Vol.- No.5

The purpose of this study is requiring the ability which can meet the tourists various needs highly cultivated and quality-oriented under the free unlimited, competitive, market of Hotel Room products influenced from the era of open market system. And, also, presenting the constructive marketing strategy in futural sales on Hotel Room Products, and to find out problems after researching, analyzing during the 1995 and the first half 1996. The promotion plans are as follow : i) To set a project for the discrimininated strategy on products of Hotel Room. (Customer-perceivable products program involving the Quest-move-oriented service, specialized for make program for business woman)2 ii) Implement of strategical project to induce the individual guests scientifically by drawing up a program. (Discriminated promotion of EFL products, House Organ's marketing method, Effective operation secretary club program, Extension of money-payment Membership system.) iii) Ought to have a focus on the policy and Highly Quality Management, Quality-Guaranteed System for the product of Hotel Rooms and service circumstantial improvement.

On Vector Bundles

張澤相 群山大學校 1984 論文集 Vol.9 No.-

Χ를 paracompact공간이라 하고 ??를 Χ의 局所有限被覆이라 할 때 Χ상의 G-cocycle이란 ?? 연속사상 ?? 단, 각 ?? 대하여 ?? G는 임의의 topological group를 말한다. G-cocycle들의 집합에 동치관계를 정의하여 그 商을 ?? 나타내자. 本槁에서는, k는 體이며 Χ상의 n차 k-vector bundle 들의 동형 사상족의 집합을 ??하고 ??와 동형임을 보였다.