• Steel and Composite Structures
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• 제24권6호
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• pp.689-695
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• 2017

The constitutive relation is an important factor in analysis of confined concrete in composite structures. In order to propose a constitutive model for nonlinear analysis of confined concrete, lateral restraint mechanism of confined concrete is firstly analyze to study the generalities. As the foundation of the constitutive model, peak stress and peak strain is the first step in research. According to the generalities and the Twin Shear Unified Strength Theory, a novel unified equation for peak stress and peak strain are established. It is well coincident with experimental results. Based on the general constitutive relations and the unified equation for peak stress and peak strain, we propose a unified and convenient constitutive model for confined concrete with fewer material parameters. Two examples involved with steel tube confined concrete and hoop-confined concrete are considered. The proposed constitutive model coincides well with the experimental results. This constitutive model can also be extended for nonlinear analysis to other types of confined concrete.

• 건축역사연구
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• 제23권5호
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• pp.37-45
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• 2014

It was identified by the excavation that architecture remains were confirmed buddhist temple consist of ruins of main building of a temple, auditorium site, ruins of stone pagoda, embankment, pedestrian Facilities and drainage etc. in the Gwangmyeong-dong site. The site has been held temple arrangement with 1 main building of a temple, twin Pagodas from the Unified Silla period to Goryeo dynasty. The temple constructed after that was destroyed the architecture in the Unified Silla period. It seems that aristocrat or royalty power of within group of the nearby remains of city which was constructed in the Unified Silla period build and visit the temple. Considering there are excavations, it assumes that the temple had been constructed during the last days of the Unified Silla, was closed up during the mid-Goryeo Dynasty.

• 전자공학회논문지B
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• 제33B권2호
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• pp.103-110
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• 1996

In this paper, we propose a unified systolic array for the computation of the 2D discrete cosine transform/discrete sine transform/discrete hartley transform (DCT/DST/DHT). The unified systeolic array for the 2D DCT/DST/DHT is a generalization of the unified systolic array for the 1D DCT/DST/DHT. In order to calculate the 2D transform, we compute 1D transforms along the row, transpose them, and obtain 1D transforms along the column. When we compare the proposed systolic array with the conventional method, our architecture exhibits a lot of advantages in terms of latency, throughput, and the number of PE's. The simulation results using very high speed integrated circuit hardware description language (VHDL), international standard language for hardware description, show the functional validity of the proposed architecture.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2013년도 추계학술대회
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• pp.540-543
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• 2013

본 논문은 SIMT 구조 기반의 멀티코어 GPGPU의 통합 ALU를 설계하였다. 조건부 분기 명령어, 데이터 이동 명령어, 정수형 산술 연산 명령어, 부동소수점 산술 연산 명령어를 처리할 수 있으며 멀티코어 GPGPU의 다양한 형태의 병렬처리 기능을 지원하기 위하여 다 수의 ALU가 탑재된다. 각 명령어 연산의 처리방식의 공통성을 회로 수준에서 통합하여 최소의 크기로 ALU를 설계하는 것이 본 논문의 주안점이다. 모든 명령어는 테스트 프로그램을 작성하여 실험하였고 CPU로 연산한 결과와 비교하여 본 논문의 ALU가 정상적으로 동작함을 검증하였다. 본 논문에서 설계한 통합 ALU의 크기는 약 2만 게이트이며 최대 동작주파수는 430MHz이다.

• 대한임베디드공학회논문지
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• 제11권2호
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• pp.57-65
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• 2016

In this paper, we propose a system for efficient use of shared memory between CPU and GPU. The system, called Fusion Architecture, assures consistency of the shared memory and minimizes cache misses that frequently occurs on Heterogeneous System Architecture or Unified Virtual Memory based systems. It also maximizes the performance for memory intensive jobs by efficient allocation of GPU cores. To test between architectures on various scenarios, we introduce the Fusion Architecture Analyzer, which compares OpenMP, OpenCL, CUDA, and the proposed architecture in terms of memory overhead and process time. As a result, Proposed fusion architectures show that the Fusion Architecture runs benchmarks 55% faster and reduces memory overheads by 220% in average.

• 한국정보통신학회논문지
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• 제13권1호
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• pp.134-144
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• 2009

통합 커뮤니케이션(Ubiquitous/Unified Communication) 플랫폼은 인터넷폰(VoIP), 이메일, 통합메세징, 인스턴트 메시징, 웹컨퍼런싱, 화상회의 등의 다양한 멀티미디어 통신수단을 제공한다. 본 논문에서는 통합 커뮤니케이션 플랫폼의 주요 기능과 구조를 소개하고, PSTN 전화망과의 연동으로 전화망 사용자와의 통화서비스를 지원하는 VoIP 시스템의 구현을 위 한 기능분석과 설계에 관해 연구하였다.

• ETRI Journal
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• 제29권6호
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• pp.820-822
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• 2007

ARIA and the Advanced Encryption Standard (AES) are next generation standard block cipher algorithms of Korea and the US, respectively. This letter presents an area-efficient unified hardware architecture of ARIA and AES. Both algorithms have 128-bit substitution permutation network (SPN) structures, and their substitution and permutation layers could be efficiently merged. Therefore, we propose a 128-bit processor architecture with resource sharing, which is capable of processing ARIA and AES. This is the first architecture which supports both algorithms. Furthermore, it requires only 19,056 logic gates and encrypts data at 720 Mbps and 1,047 Mbps for ARIA and AES, respectively.

• 정보처리학회논문지B
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• 제18B권4호
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• pp.173-180
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• 2011

본 논문은 GPU(Graphics Processing Unit) 에서 CUDA(Compute Unified Device Architecture)를 사용하여 실시간으로 객체를 분할하는 방법을 소개한다. 최근에 감시 시스템, 오브젝트 추적, 모션 분석 등의 많은 응용 프로그램들은 실시간 처리가 요구된다. 이러한 단계의 선행부분인 객체 분할 기법은 기존 CPU 기반의 시스템으로는 실시간 처리에 제약이 발생한다. NVIDIA에서는 Parallel Processing for General Computation 을 위해 그래픽 하드웨어 제약을 개선한 CUDA platform을 제공하고 있다. 본 논문에서는 객체 추출 단계에 대표적인 적응적 가우시안 혼합 배경 모델링(Adaptive Gaussian Mixture Background Modeling) 알고리즘과 Classification 기법으로 사용되는 CCL (Connected Component Labeling) 알고리즘을 적용하였다. 본 논문은 2.4GHz를 갖는 Core2 Quad 프로세서와 비교하여 평가하였고 그 결과 3~4배 이상의 성능향상을 확인할 수 있었다.

• 한국디지털건축인테리어학회논문집
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• 제11권2호
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• pp.21-30
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• 2011

Urban scape of Gyeongju is overlapped by periods. So, a study of each Periodical urban scape is required to understanding the present urban scape. All it requires study is on account of different a characteristic and the meaning of the scape. Especially, unified Silla period was most flourished in all time, has Abundant image of urban scape, heavily influences present urban scape. The research was proceeded through the classifying the concept of Urban form and the basic ideology and adopting the representative landscape at that time with the literatures and maps, on Unified Silla Period. And then tried to find out the identity of landscape with the link between the concepts of the representative landscape and that of Urban form in chronological order. The identity of historical landscape in Gyeongju on Unified Silla Period from the result of research has been influenced on by the connection with natural environment, urban form revealed by grid, space organized by vigorously heading up the inside, and Buddhistic ideology and esthetics.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2017년도 추계학술대회
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• pp.584-586
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• 2017

본 논문에서는 인터넷 장치의 보안을 위해 경량 대칭 암호화와 경량 인증을 통합 한 하드웨어 아키텍처를 제안한다. 암호화 핵심은 PRESENT 알고리즘과 제안된 새로운 경량 암호화 알고리즘으로 구성된다. 또한 HB 및 HB +, HB-MP, HB-MP + 인증 알고리즘들을 포함한다. 통합 보안 시스템은 Verilog HDL을 사용하여 설계되었으며 Modelsim SE 및 Xilinx Design Suite 14.3 프로그램을 사용하여 검증 및 합성되었다. 제안하는 암호화 코어 하드웨어 구조는 Spartan6 FPGA 장치에서 합성한 결과 189Mhz 주파수와 1130개 슬라이스를 가진다.