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자기수반확장(自己隨伴擴張)에 관한 Spectrum 의 소고
임종록 한국수학교육학회 1983 수학교육 Vol.22 No.1
In this note we consider properties for the discreteness of the spectrum of second-order differential operators. If we give some conditions, then the spectrum of any self-adjoint extension of A_0, A_0u=a〔u〕, D(A_0)=C^∞_0(0, 1) is discrete.
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임종록 漢陽大學校 自然科學硏究所 1996 自然科學論文集 Vol.15 No.-
Fuzzy 集合의 關係와 寫像에 對한 硏究는 빠른 속도로 開發되었다. 이들의 일반적인 定義를 紹介하고 여러 가지 基本性質을 살핀다. The research of the relations and mapping of fuzzy sets rapidly advanced. We introduce a general definition of the relations and mappings of fuzzy sets and discuss the fundamental properties of the relations and mappings of fuzzy sets.
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임종록 한양대학교 이학기술연구소 2002 이학기술연구지 Vol.5 No.-
무한사고의 변천과정을 살펴봄으로서 무한에 대한 사고가 우리 삶에 미치는 영향이 얼마나 크며 시대의 사조를 이끌어 왔는가를 검토한다. 그리고 이 무한사고가 적극적의미로 받아드려지고 있는 상황에서 삶을 바라보는 패러다임의 전환이 어떻게 변하고 있는가를 살피고자 한다. In this paper we try to research in the influences which the concepts of infinity have made to our life, and how they have led the trend of the times through studying on the process of changes of concepts of infinity. Also we intend to make a research in how the shift of paradigm on the view of life have been changing under the circumstances in which the concepts of infinity have been accepted as an actual meaning.
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임종록,한정순 한양대학교 이학기술연구소 2000 이학기술연구지 Vol.2 No.
스칼라형 작용소의 스펙트럼으로 제한한 스펙트럼으로 제한한 스펙트럼 작용소의 특성화에 관하여 생각할 때, 그룹 ?^(its)에 필요조건을 첨가함으로써 유계선형작용소 S가 pseudo-hermitian 작용소가 된다. Reflexive Banach 공간상의 유계선형작용소 S가 pseudo-hermitian 작용소가 되기 위한 필요 충분한 조건은 f∈L1(R)가 ?∫Rf(t)?^(its)dt?? M?f?∞ 이다. We are concerned with the characterization problem for bounded spectral operators. We restrict the discussion to scalar type operators with real spectrum. The simplest criterion of this kind is for Helbert space. We give additional necessary conditions on the group ?^(its), which together with its uniform boundedness are both necessary and sufficient for S to be pseudo-hermitian operators. A bounded linear operator S on a reflexive. Banach space is pseudo-hermitian operators if and only if for every f in L1 (R), we have ?∫Rf(t)?^(its)dt?? M?f?∞ where the norm on the left is the operator norm, f is the Fourier transform of f and ???∞ is the sup norm.
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임종록,민용기,정태희,안재현,안형근 대한전자공학회 2015 Journal of semiconductor technology and science Vol.15 No.5
A photovoltaic (PV) system generates electricity by installing a solar energy array; therefore, the photovoltaic system can be easily exposed to external factors, which include environmental factors such as temperature, humidity, and radiation. These factors—as well as shading, in particular—lead to power degradation. When there is an output loss in the solar cell of a PV module package, the output loss is partly controlled by the bypass diode. As solar cells become highly efficient, the characteristics of series resistance and parallel resistance improve, and the characteristics of reverse voltage change. A bypass diode is connected in parallel to the string that is connected in series to the PV module. Ideally, the bypass diode operates when the voltage is -0.6[V] around. This study examines the bypass diode operating time for different types of crystalline solar cells. It compares the reverse voltage characteristics between the single solar cell and polycrystalline solar cell. Special modules were produced for the experiment. The shading rate of the solar cell in the specially made solar energy module was raised by 5% each time to confirm that the bypass diode was operating. The operation of the bypass diode is affected not only by the reverse voltage but also by the forward bias. This tendency was verified as the number of strings increased.
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태양광 발전과 ESS 시스템의 연계운전시 단독운전 방지 사례 연구
임종록,황혜미,신우균,주영철,정영석,강기환,고석환 한국태양에너지학회 2019 한국태양에너지학회 논문집 Vol.39 No.1
The installation of BIPV or BAPV which is installed on building is increased in Korea, so that the cumulative installation has increased. However, the quality of power gird including distributed power sources such as PV system and wind power might degrade due to fluctuation of their output power by the source. As a solution to it, there is a method to connect PV system and ESS system. However, the ESS and PV system connected to grid in parallel can cause problems with electrical safety. This paper presents the results of case studies to detect islanding operation, which are electrical safety in situations that the photovoltaic system and ESS systems are connected in parallel to grid. The experiments were conducted under a various non-islanding detection in operating conditions. In the experiment result, when a individual inverter(PV inverter or ESS inverter) was operated under the islanding condition, it was stopped within 0.5 seconds on the Korean grid standard. However, when two inverters(PV inverter and ESS inverter) were operated at the same time in the islanding situation, the anti-islanding algorithm is not operated and two inverters continually supply the connected RLC load. So, the algorithm of islanding detection developed by each inverter manufacturer could cause this phenomenon. Therefore, the new test standard should be presented for islanding detection.
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임종록 한양대학교 이학기술연구소 2005 이학기술연구지 Vol.8 No.-
마음의 구조와 작용을 무한한 차원의 상태에서 연구하고 동양에서는 마음에 대해서 어떻게 해석하고 삶에 적용하고 있는가를 살펴본다. Study on the sturcture and th function of mind in the aspect of the principles of the infinity and the dimension, and examine how the east interpret and apply mind with their daily lives.
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임종록 한양대학교 이학기술연구소 2005 이학기술연구지 Vol.8 No.-
몸과 마음의 관계를 연구한다, 특히 고나점과 동양적인 관점에서 몸과 마음의 상호관계를 살핀다. study on the relationshiys between mind and body Specially examine the interrelationsships between mind and body from the eastern and western point of view.
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