• International Journal of Contents
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• 제5권4호
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• pp.62-68
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• 2009

This paper presents a novel method to design and implement mobile u-health system by defining the essential elements of mobile healthcare services. We choose common service elements for the proposed u-healthcare scheme and design the service platform. Especially we focus on automatic feces or urine sensing u-care scheme to prove the effectiveness of our platform. We construct the system with sensing part with a manikin and a diaper wireless communication part with feces or urine sensing data, and coordinator system based on the u-health platform defined in this paper. Experimental results show that our scheme is useful in the area of u-care service for the handicapped, the elderly, and patients who can hardly move by themselves. In addition the designed scheme offers a realized u-care scheme with the purpose of advanced developing tools for application or service developers.

• 정보관리연구
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• 제35권1호
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• pp.1-27
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• 2004

지식경영에 있어서 조직 구성원들 간에 지식을 공유하는 가장 기초적이면서 기틀이 되는 것은 공유할 지식을 체계적으로 관리할 수 있는 지식분류체계를 구축하는 것이다. 이에 이 연구에서는 지식경영의 도입단계에 있는 한국원자력연구소에서 조직 구성원들이 실제로 지식을 효율적으로 공유할 수 있도록 하기 위한 최적의 지식분류체계를 구축하였다. 이 연구에서는 지식경영의 본격적인 도입에 따라 한국원자력연구소에서 실제로 활용할 수 있는 전소차원의 지식분류체계를 구축하기 위해서, 기본적인 분류체계 설계원칙 아래 기존의 다양한 분류체계를 참고하여, (1) 지식분류체계 초안 작성단계, (2) 지식분류체계 수정안 작성단계, (3) 지식분류체계 검증 및 확정단계 등과 같이 3단계 과정을 거쳐 지식분류체계를 완성하였다. 완성된 지식분류체계는 기술적인 측면과 조직체계를 감안한 미래지향적인 분류체계로서 총 218항목으로서, 대분류 8항목, 중분류 43항목, 소분류 167항으로 구성되어 있다. 여기에서 설계된 지식분류체계는 한국원자력연구소에서 지식경영을 운영할 때 지식의 체계적인 관리를 통한 조직 구성원들의 지식 공유 및 활용의 가장 기초적이면서 중요한 틀로써 이용될 수 있을 것이다. 아울러 지식분류체계 자체는 물론 지식분류체계의 초안 작성에서부터 최종안을 완성하기까지의 제반 설계과정 및 방법론적인 측면은 지식경영을 도입하려는 타 연구기관이나 기업체 등에서 지식분류체계를 설계할 때 매우 유용하게 활용될 수 있을 것으로본다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2005년도 춘계 학술발표대회 논문집
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• pp.142-143
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• 2005

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제16권1호
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• pp.287-304
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• 2022

With the development of quantum computers, ring signature schemes based on large integer prime factorization, discrete logarithm problem, and bilinear pairing are under threat. For this reason, we design a ring signature scheme based on lattice with a fixed verification key. Compared with the previous ring signature scheme based on lattice, our design has a fixed verification key and does not disclose the signer's identity. Meanwhile, we propose an anonymous electronic voting scheme by using our ring signature scheme based on lattice and (t, n) threshold scheme, which makes up for the lack of current anonymous electronic voting that cannot resist attacks of the quantum computer. Finally, under standard model (SM), we prove that our ring signature scheme based on lattice is anonymous against the full-key exposure, and existentially non-forgeable against insider corruption. Furthermore, we also briefly analyze the security of our anonymous electronic voting scheme.

• 국제초고층학회논문집
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• 제12권3호
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• pp.251-262
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• 2023

In response to China's "Regulations on the Management of Earthquake Resistance of Building Constructions" on the provision of eight types of important buildings to maintain functional after fortified earthquakes occur, "Guidelines for Seismic Design of post-quake functional buildings (Draft for Review)" distinguishes Class I and Class II buildings, and gives the performance objectives and seismic verification requirements for design earthquakes and severe earthquakes respectively. In this paper, a hospital and a school building are selected as examples to design according to the requirements of fortification of Intensity 8 and 7 respectively. Two design strategies, the seismic isolation scheme and energy dissipation scheme, are considered which are evaluated through elastic-plastic dynamic time-history analysis to meet the requirement of post-quake functional buildings. The results show that the seismic isolation design can meet the requirements in the above cases, and the energy dissipation scheme is difficult to meet the requirements of the "Guidelines" on floor acceleration in some cases, for which the scheme shall be made valid through the seismic resilience assessment. The research in this paper can provide a reference for designers to choose schemes for post-quake functional buildings.

• 한국CDE학회논문집
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• 제19권1호
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• pp.41-49
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• 2014

For the reuse of the existing 3D block model of a ship, we analyze the hull modeling process using AVEVA Marine which is a representative CAD (Computer-Aided Design) system for the shipbuilding. In the AVEVA Marine environment where the design engineer makes 3D model on the 2D view that is so-called 2.5D, it cannot be possible to copy to reuse the block model just simply copying the 3D feature model itself like in the general mechanical CAD system or Smart Marine 3D which are on the basis of the 3D model representation. In this paper, we analyze the scheme file where the 3D model is defined in AVEVA Marine so that we develop the program for the block copy and the translation using this scheme file. It is significant that this program can be immediately available as a real-world application on the AVEVA Marine environment.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권6호
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• pp.2014-2034
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• 2015

This paper focuses on solving co-channel interference (CCI) issues arising in the open subscriber group (OSG) mode of heterogeneous networks (HetNets). Considering a general framework consisting of arbitrary number of picocells within a macro cell, where the inter-user interference (IUI) is the main CCI to macro user equipments (UEs), while the the inter-cell interference (ICI) is the major CCI to pico UEs. In this paper, three IA based transceiver design schemes are proposed. For macro cell, we uniformly use block diagonalization (BD) scheme to eliminate the IUI. And for picocells, three IA schemes are proposed to mitigate the ICI. The first scheme, named as zero forcing IA (ZF-IA) scheme, aligns the inter picocell interference onto an arbitrary sub-space of the cross-tier interference using ZF scheme. Considering the channel state information (CSI) of the desired channel of pico UEs, the second scheme, named as optimal desired sub-channel selected IA (ODC-IA) scheme, aligns the inter picocell interference onto a certain sub-space of the cross-tier interference, which guarantees the largest channel gain of the desired signal of pico UEs. The third IA scheme, named as maximum cross-tier interference selected IA (MI-IA) scheme, is designed for the system with less receive antennas. The inter picocell interference is aligned onto the space of the strongest cross-tier interference and only the interference on this space is nullified. The complexity analysis and simulations show that the proposed transceiver design schemes outperform the existing IA schemes in the OSG mode of HetNets, and the MI-IA scheme reduces the requirement of the receive antennas number with lower complexity.

• 소성∙가공
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• 제6권5호
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• pp.408-415
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• 1997

The backward tracing scheme of the finite element analysis, which is counted to be unique and useful for process design in metal forming, has been developed and applied successfully in industry to several metal forming processes. Here the backward tracing scheme is implemented for process design of three-dimensional plastic deformation in metal forming, and it is applied to a precision coining process. The contact problem between the die and workpiece has been treated carefully during backward tracing simulation in three-dimensional deformation. The results confirm that the application of the developed program implemented with backward tracing scheme of the rigid plastic finite element leads to a reasonable initial piercing hole configuration. It is concluded that three-dimensional extension of the scheme appears to be successful for industrial applications.

• 전자공학회논문지B
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• 제31B권5호
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• pp.73-80
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• 1994

This paper deals with a new design scheme to reduce the array multiplication time by modifing the structure of the CSA array in the conventional array miltyplier. A circuit with the suggested scheme is designed and simulated. The suggested scheme is to assign the inputs of addend and augend faster than carry input to the CSA. It is shown that the operation time of the CSA array is reduced to 50%.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.1051-1052
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• 2006

In this paper, we propose a puncturing scheme to design low-density parity-matrix (LDPC) codes for unequal error protection (UEP). Two different puncturing schemes are compared. Simulation results show that proposed puncturing scheme outperforms regular puncturing scheme for more important bits. Future work is to find an optimized puncturing patten for UEP irregular LDPC codes.