• Journal of Internet Computing and Services
• /
• v.8 no.5
• /
• pp.161-170
• /
• 2007

The proposed switch which has separated data plane and switching plane can make parallel processing for packet data storing, memory address pointer switching and simultaneously can be capable of switching the variable length for IP packets. The proposed architecture does not require the complicated arbitration algorithms in VOQ, also is designed for QoS of generic output queue switch as well as input queue. At the result of simulations, the proposed architecture has less average packet delay than the one of the memory-sharing based architecture and guarantees keeping a certain average packet delay in increasing switch size.

• Proceedings of the IEEK Conference
• /
• 2008.06a
• /
• pp.677-678
• /
• 2008

이 연구는 프로그래밍 교과의 수행평가에서 자기주도적 학습능력 촉진을 위하여 학업성취도를 분석 및 예측하는 시스템을 목적으로 하였다. 이 연구에서 학업성취도의 평가는 루브릭을 적용하여 프로그래밍 수행평가의 채점을 논리력, 문제해결력, 창의력으로 측정하였으며 학업성취도를 분석하기 위해 학습자별 학업성취도를 측정 준거 별로 그래프로 표현하며 이동평균법을 적용하여 향후 점수를 예측하였다. 이로 인해 학습자는 평가 결과 그래프로 현재 자신의 학습상태를 파악하고 예측 결과로 자신의 학습의 준거 별 장 단점을 분석하여 학습 방향 및 학습시간에 대한 자기 성찰에 도움을 주어 자기주도적 학습능력을 촉진시킬 수 있도록 하였다.

• Proceedings of the Korean Information Science Society Conference
• /
• 2002.10e
• /
• pp.127-129
• /
• 2002

NP Forum에서는 다양한 밴더의 네트워크 프로세서와 스위치 패브릭간에 물리적 인터페이스를 제공하기 위해 CSIX-L1(Common Switch Interface-Level 1 )인터페이스를 표준화하였다. IBM 네트워크 프로세서는 MPLS 및 VPN, VLAN, Security, Ipv6와 같은 다양한 어플리케이션과 TBI. SMII CMII. POS bus등 다양한 가입자 인터페이스를 지원하며, L2 기 반에서 2.5Gbps 이상의 패킷 처리를 수행하기 때문에 많은 시스템에 사용된다. 그러나 IBM네트워크 프로세서는 스위치 인터페이스로 DASL인터페이스를 사용한다. 따라서 DASL인 터페이스와 CSIX-L1 인터페이스를 정합하기 위해서는 IBM UDASL칩을 이용해 DASL인 터페이스를 UTOPIA-L3인터페이스로 변환해야 하며, 이것을 다시 CSIX-L1인터페이스로 변환해야 한다. 따라서 본 논문에서는 UTOPIA-L3인터페이스 패킷과 CSIX-L1인터페이스 프레임을 상호 변환하는 모듈을 설계하였으며, 32비트 데이터 버스와 최대 125MHz로클록을 사용해 최대 4Gbps의 패킷처리를 제공하도록 구현하였다. 또한 스위치 패브릭의 특정 포트에서 과잉 트래픽 전달로 인해 발생할 수 있는 블로킹을 방지하기 위해 네트워크 프로세서에게 3개의 Priority／최대 64개 포트수의 VOQ(Virtual Output Queue)를 제공하는 기법에 대해서 기술한다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2020.11a
• /
• pp.49-52
• /
• 2020

블록체인은 분산 시스템 환경에서 비가역적 정보를 탈중앙화된 방식으로 검증하는 기술로 다양한 산업에서 적용되어 새로운 가치를 만들어내고 있다. 본 연구에서는 허가형 블록체인 기술을 대표하는 오픈소스 프로젝트인 하이퍼레저 패브릭 환경에서 체인코드 및 레저 유형에 따른 합의 작업에 대한 성능을 분석하였으며, 결과에 대한 분석을 통해 블록체인 기반 분산 어플리케이션의 성능 요구사항 도출에 활용 가능한 정보를 제시하였다. 이를 통해 다양한 산업에서 블록체인 도입 시 활용할 수 있는 객관적 성능 지표의 역할을 수행하여 블록체인 기술 활성화에 기여할 것으로 기대된다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2023.05a
• /
• pp.220-221
• /
• 2023

EMR 시스템은 환자들의 진료, 처방 및 개인정보들을 중앙집중형으로 관리하는 시스템이다. 기존 EMR 시스템은 수기로 작성하던 진료기록을 컴퓨터를 통해 전자문서 형태로 관리하고 있다. 그러나 EMR 시스템은 외부로부터 해킹이나 데이터 유출에 대한 피해가 우려된다. 본 논문에서는 블록체인 기반의 하이퍼레저 패브릭과 DID를 사용하여 EMR 데이터를 분산 저장하여 환자의 진료기록을 안전하게 관리하는 시스템 기법을 제안한다.

• Proceedings of the Korean Fiber Society Conference
• /
• 2000.04a
• /
• pp.307-310
• /
• 2000

• Journal of The Korean Association of Information Education
• /
• v.18 no.1
• /
• pp.57-64
• /
• 2014

This study aims to suggest lesson plans and evaluation methods for primary pre-service teachers by reviewing the concept of computational thinking(CT) skills and its sub components. To pursue this goal, a literature review has been conducted in regards to CT and the effectiveness of programming courses. In addition, the Scratch educational programming functions were analyzed yielding six CT elements(data representation, problem decomposition, abstraction, algorithm & procedures, parallelization, simulation). With these six elements, one semester lesson plans for 15 weeks that represent the connections with six CT elements were designed. Based on the PECT(Progression of Early Computational Thinking) model and the CT framework a rubric to evaluate learners' proficiency levels(basic, developing, proficient) revealed in their final projects was developed as well. Upon a follow-up empirical study, the lesson plans and the rubric suggested in the current study are expected to be utilized in teachers' colleges.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2003.10a
• /
• pp.373-376
• /
• 2003

This paper presents a new, three-dimensional round-robin scheduler that provides high throughput and fair across in an advanced input-queued packet switch using shared input buffers. We consider an architecture in which each input port group shares a common buffer and maintains a separate queue for each output, which is ratted the distributed common input buffer switch. In an NxN switch, our scheduler determines which queue in the total MxN input queues is served during each time slot where M is the number of common buffers. We suppose that each common buffer has K input ports and K output ports, and manages N output queues. The 3DRR scheduler determines MxK queues in every K(M) cycle when $K\geq$M (K$\leq$M), and provides massively parallel processing for the applications of high-speed switches with a large number of ports. The 3-DRR scheduler can be implemented using duplicated simple logic components allowing very high-speed implementation.

• Journal of Fashion Business
• /
• v.14 no.4
• /
• pp.74-90
• /
• 2010

The history of contemporary art in the 20th century can be said the history of changes. Today the variety of objects destroy the boundaries of each genre. This study aims to understand the relationship between fashion and art that becomes closer by examining contemporary art in the Gwangju Biennale 2008 to enlarge the range of understanding of mutual communication between contemporary art and fabrics which are the object of fashion. The research method was to investigate the characteristics and expression methods of object fabrics shown in contemporary art through the review of papers published at home and abroad, related literatures, and Internet materials. Also, the meaning, technique, and methods of fabrics were analyzed from works introduced in the Gwangju Biennale 2008. In order to achieve this purpose, fabric was examined as the object of work in Gwangju Biennale 2008. As a result, it is found that fabric plays an important role in changing environment newly with more dynamic, abundant, and comfortable and softer feeling than any other artistic materials and enlarging the boundaries of artistic materials by exploring formative possibility. Furthermore, its multi-dimensional expression characteristic presents unbounded possibility. Fabric which has long formed close relationship with human life has taken its place as one genre now. It departs from the past principles of fabric handicraft and the restriction of a classical norm and becomes characteristic of very wide-ranging selection of materials and free expression. Its soft and warm texture provides emotional stability for a human. Although the peculiarity of fabric as an active concept to human environment and new materials and technique based on the aesthetic consciousness of a human rely on the high development of industry, it is significant that artists' liberation from their concept and material sense is accompanied by the expression of freedom.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.24 no.9B
• /
• pp.1631-1642
• /
• 1999

In this paper, we propose a new fault tolerant ATM Switch and a new adaptive self-routing scheme used to make the switch to be fault tolerant. It can provide more multiple paths than the related previous switches between an input/output pair of a switch by adding extra links between switching elements in the same stage and extending the self-routing scheme of the Banyan network. Our routing scheme is as simple as that of the banyan network, which is based on the topological relationships among the switching elements (SE’s) that render a packet to the same destination with the regular self-routing. These topological properties of the Banyan network are discovered in this paper. We present an algebraic proof to show the correctness of this scheme, and an analytic reliability analysis to provide quantitative comparisons with other switches, which shows that the new switch is more cost effective than the Banyan network and other augmented MIN’s in terms of the reliability.