• The Korean Journal of Financial Management
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• v.9 no.2
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• pp.31-55
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• 1992

금융기관(金融機關)은 기업, 가계, 정부와 함께 우리 경제를 구성하는 주요한 부분이다. 금융기관은 최종적 차입자와 최종적 대부자를 중개하는 과정에서 여러가지 서어비스를 우리에게 제공하면서 존재한다. 금융기관이 제공하는 서어비스는 우리의 경제생활에 매우 중요한 영향을 미친다. 금융기관의 행동이 경제에 미치는 영향을 분석하기에 앞서 어떤 조건하에서 금융기관이 존립할 수 있는가를 알아보는 것도 금융기관의 행동을 이해하기 위해 의미있는 일일 것이다. 본 논문은 정보불균형(情報不均衡)의 관점에서 금융기관의 존립을 분석, 설명하는데 그 목적이 있다. 경제문제의 불확실성과 복잡성의 증대는 민간의 제한된 합리성을 더욱 제한되게 만들고 역으로 제한된 합리성 때문에 불확실성과 복잡성은 더욱 중요한 문제가 된다. 여기에다 인간의 이기주의가 결합하게 되면 정보의 유통이 불완전해져 정보가 불균등하게 분포하게 되는 현상이 생긴다. 정보불균형(情報不均衡)은 거래를 위촉시키고 극단적인 경우 시장실패(市場失敗)를 가져온다. 금융기관은 정보생산을 통해 거래위축이나 시장주패(市場朱敗)를 방지할 수 있는 역할을 한다. 금융기관이 정보생산을 한다고 해도 개별정보생산자나 직접 금융에 비해 정보생산비용면에서 우위를 가질 수 있어야 금융기관의 존립은 가능할 것이다. 즉 정보불균형(情報不均衡)을 해소하기 위한 정보생산이 금융기관이 존립할 수 있는 필요조건이라면, 정보생산의 경제성은 금융기관이 존립할 수 있는 필요충분조건이 된다고 할 수 있다. 금융기관이 개별정보생산자나 직접 금융보다 정보생산면에서의 경제성을 가질 수 있는 가능성은 첫째, 분산효과(分散效果)로 인한 대리비용(代理費用)의 감소(減小) 둘째, 분산효과(分散效果)로 인한 구성원보상(構成員補償)의 불확실성감소(不確實性減小) 세째, 금융기관 구성원간의 정보공유효과(情報共有效果)이다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2013.11a
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• pp.66-67
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• 2013

Replacing a large amount of ground granulated blast furnace slag is limited because early age strength is low due to latent hydraulic property despite excellence of long-term strength. This study aimed to examine produceableness of high-activated ground granulated blast furnace slag using slag by-product from steel process. As experimental variable, the properties of strength development were analyzed by setting fineness and replacement ratio of slag by-product, curing conditions, and W/B. The results of study showed that high-activated ground granulated blast furnace slag using slag by-product as an activator improve the compressive strength of mortar. It is expected to be used as binder for secondary product of concrete considering curing and mixing conditions because high-activated ground granulated blast furnace slag can be hydrated by itself.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.15 no.3
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• pp.197-212
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• 1990

This paper present a new design concept of a single chip 16-bit data path using the concept of modular design, the whole system is divided into several blocks which can be operated as an independent system itself. Making the internal blocks can act as a subsystem, it is possible to shorten design turn-around time, to be redesigned effectively, and to optimize the system performance. The designed system is data path. The data path is to manipulate 16-bit integer data. It is composed of aritmetic logic unit, register file, barrel shifter and bus circuit. The widths and lengths of gate in the circuit were determined using SPICE2. The results of circuit simulation were in good agreement with expected circuit characteristics.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.12 no.7
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• pp.1076-1085
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• 2001

In this paper, the FMM(Fast Multipole Method) combined with GMRES(Generalized Minimal RESidual Method) matrix solver is used to extract the parasitic impedance for complicated 3-D structures in uniform dielectric materials which limit the use of MoM(Method of Moment) due to its large computation time and memory requirement. This algorithm is a fast multipole-accelerated method based on quasistatic analysis and is very efficient for computing impedance between conductors. This paper proved the accuracy and efficiency of the FMM by comparing with MoM in simple examples. Finally the parasitic impedance of FC-PGA(Flip Chip Pin Grid Array) Package pins has been extracted by this algorithm and we have considered the possibility of the EMI/EMC problem caused by the signal interference.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.2
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• pp.776-779
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• 2005

The Program language for web, such as PHP, JSP, ASP and so on, make it possible to offer more user interactive page by using with HTML. These language and program have been developed with great speed, but security part could not catch up with this development. As a result, it has brought a problem which is expose many server systems to the outside. In this research, we implement Web and SQL analysis program which can analysis hacking causing factor. With this analysis program, we will show you how much efficient it has compared with security patch for server system.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.32 no.1A
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• pp.101-108
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• 2007

There nay be collisions among beacons from several full function devices in IEEE 802.15.4 sensor networks. These collision of beacons may cause devices to lose time synchronization, and thus be unable to association. To solve this problem, the IEEE 802.15.4b defines a new Post Beacon Period(PBP), but it does not still alleviate the beacon collision problem. In this paper, we propose two automatic beacon alignment schemes that a node itself can decide its beacon start time using its short address that has been assigned during association. We also simulate and investigate our proposed automatic beacon collision avoidance schemes using NS-2 simulator.

• Journal of KIISE:Software and Applications
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• v.34 no.7
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• pp.603-615
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• 2007

Software changes for various kinds of reasons and they increase maintenance cost. Software metrics, as quantitative values about attributes of software, have been adopted for predicting maintenance cost and fault-proneness. This paper proposes relationship between some typical object-oriented metrics and software changes in industrial settings. We used seven metrics which are concerned with size, complexity coupling, inheritance and polymorphism, and collected data about the number of changes during the development of an Information system on .NET platform. Based on them, this paper proposes a model for predicting the number of changes from the object-oriented metrics using multiple regression analysis technique.

• KIPS Transactions on Software and Data Engineering
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• v.5 no.11
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• pp.585-592
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• 2016

A topic segmentation module is to divide statements or conversations into certain topic units. Until now, topic segmentation has progressed in the direction of finding an optimized set of segments for a whole document, considering it all together. However, some applications need topic segmentation for a part of document which is not finished yet. In this paper, we propose a model to perform topic segmentation during the progress of the statement with a supervised learning model that uses a convolution neural network. In order to show the effectiveness of our model, we perform experiments of topic segmentation both on-line status and off-line status using C99 algorithm. We can see that our model achieves 17.8 and 11.95 of Pk score, respectively.

• KIPS Transactions on Software and Data Engineering
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• v.9 no.11
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• pp.332-338
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• 2020

The blockchain contains potential to contribute for the development of education, teaching and learning as it provides the basic technologies which can handle the data transparently and stably in reliability. Especially, blockchain technology can guarantee the transparency, stability and reliability on the data especially in managing longitudinal education data. This study designed the Badgechain service platform combining badges and blockchains. This service consists of Badgechain solution, Moodle LMS linked to Badgechain added with Badgechain service as a learning activity, and Badgechain Wallet site where badges issued by various agencies can be viewed and managed. This study was performed as a basic study on educational use of blockchain.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.02a
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• pp.333-333
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• 2010

크라이오 펌프는 크기에 비해 상대적으로 큰 배기속도를 가지고 있고 자체 기체 방출이 적어 비교적 쉽고 빠르게 도달압력을 낮출 수 있다. 또 초고진공 펌프로서 경쟁 상대인 터보분자 펌프보다 기체 돌입에 대한 기계적 사고 가능성이 낮다. 그러나 흡착 패널의 온도에 민감하게 반응하는 배기 성능 측면에서 볼 때 크라이오 펌프의 대유량 및 펄스 기체 부하에 대한 성능 유지 및 회복능력은 의문의 여지가 있다. 크라이오 펌프의 기체부하에 대한 공식적인 성능지표로는 최대배기량(max. throughput)과 교차(crossover)값이 있다. 전자는 연속적인 유량[$Pa{\cdot}m^3/s$]에 대해, 또 후자는 일정 기체량[$Pa{\cdot}m^3$]에 대해 흡착 패널이 20 K를 넘지 않는 가동범위를 구하는 것이다. 교차값은 넓은 의미에서 펄스 기체부하에 대한 성능으로 볼 수도 있지만 원래 목적은 진공용기를 저진공 상태에서 고진공 상태로 전환하는 시점을 정하려는 데 있다. 펌프회사에서 제공하는 사양에는 대부분 아르곤 회복시간(Ar recovery time)이라는 지표가 있는데 이는 아르곤을 상당한 유량으로 흘리다 멈췄을 때 얼마나 빨리 기저 상태로 회복되는가를 나타낸다. 보통 사양서에 제시하지는 않지만 주로 크라이오 펌프의 재생상태를 알아보기 위해 사용하는 걸프(gulp) 시험이 있는데 일정량의 기체를 펄스로 도입한 후 압력변화를 기록하여 재생후 배기성능 회복 능력을 보는 것이다. 이들은 겉보기에 서로 다르지만 한편으로는 서로 중복되거나 연관성을 가지고 있어서 실용적인 면에서 절차들을 비교, 검토 및 개선하고 때에 따라서는 적절히 결합할 수 있는 방안을 모색할 필요성이 있다.