• IEIE Transactions on Smart Processing and Computing
• /
• v.3 no.1
• /
• pp.1-9
• /
• 2014

This paper proposes a low-latency Sample Adaptive Offset filter (SAO) architecture and its Single Instruction Multiple Data (SIMD) optimization scheme to achieve fast High Efficiency Video Coding (HEVC) decoding in a multi-core environment. According to the HEVC standard and its Test Model (HM), SAO operation is performed only at the picture level. Most realtime decoders, however, execute their sub-modules on a Coding Tree Unit (CTU) basis to reduce the latency and memory bandwidth. The proposed low-latency SAO architecture has the following advantages over picture-based SAO: 1) significantly less memory requirements, and 2) low-latency property enabling efficient pipelined multi-core decoding. In addition, SIMD optimization of SAO filtering can reduce the SAO filtering time significantly. The simulation results showed that the proposed low-latency SAO architecture with significantly less memory usage, produces a similar decoding time as a picture-based SAO in single-core decoding. Furthermore, the SIMD optimization scheme reduces the SAO filtering time by approximately 509% and increases the total decoding speed by approximately 7% compared to the existing look-up table approach of HM.

• Steel and Composite Structures
• /
• v.45 no.4
• /
• pp.563-577
• /
• 2022

This paper presents experimental and numerical investigations of a new seismic enhancement method for existing reinforced concrete (RC) frames by using an external sub-structure, the hybrid seismic retrofit method (HSRM) system. This retrofit system is an H-shaped frame bolt-connected to an existing RC frame with an infilled-concrete layer between their gaps. Two RC frames were built, one with and one without HSRM, and tested under cyclic loading. The experimental findings showed that the retrofitted RC frame was superior to the non-retrofitted specimen in terms of initial stiffness, peak load, and energy dissipation capacity. A numerical simulation using a commercial program was employed for verification with the experiments. The results obtained from the simulations were consistent with those from the experiments, indicating the finite element (FE) models can simulate the seismic behaviors of bare RC frame and retrofitted RC frame using HSRM.

• Wind and Structures
• /
• v.37 no.6
• /
• pp.445-460
• /
• 2023

Accurate estimation of modal parameters (i.e., natural frequency, damping ratio) of tall buildings is of great importance to their structural design, structural health monitoring, vibration control, and state assessment. Based on the combination of variational mode decomposition, smoothed discrete energy separation algorithm-1, and Half-cycle energy operator (VMD-SH), this paper presents a method for structural modal parameter estimation. The variational mode decomposition is proved to be effective and reliable for decomposing the mixed-signal with low frequencies and damping ratios, and the validity of both smoothed discrete energy separation algorithm-1 and Half-cycle energy operator in the modal identification of a single modal system is verified. By incorporating these techniques, the VMD-SH method is able to accurately identify and extract the various modes present in a signal, providing improved insights into its underlying structure and behavior. Subsequently, a numerical study of a four-story frame structure is conducted using the Newmark-β method, and it is found that the relative errors of natural frequency and damping ratio estimated by the presented method are much smaller than those by traditional methods, validating the effectiveness and accuracy of the combined method for the modal identification of the multi-modal system. Furthermore, the presented method is employed to estimate modal parameters of a full-scale tall building utilizing acceleration responses. The identified results verify the applicability and accuracy of the presented VMD-SH method in field measurements. The study demonstrates the effectiveness and robustness of the proposed VMD-SH method in accurately estimating modal parameters of tall buildings from acceleration response data.

• Korean Architects
• /
• s.589
• /
• pp.64-71
• /
• 2018

• Korean Architects
• /
• s.589
• /
• pp.15-19
• /
• 2018

• Korean Architects
• /
• s.613
• /
• pp.58-63
• /
• 2020

• Journal of The Korea Institute of Healthcare Architecture
• /
• v.23 no.3
• /
• pp.19-27
• /
• 2017

Purpose: The characteristics of site plan and space configuration of public dentistry through examining the public dental healthcare centers for the disabled in Korea and comparison between them are necessary for the development of planning of the dental healthcare system. This study has been started to provide basic informations such as nationwide distribution, site relationship, and space configuration for the planning of public dental hospital architecture. Methods: Literature review of publicness and public dental healthcare and investigation on current status of public dental healthcare center for the disabled in Korea have been conducted. The site plan and space configuration of eight public healthcare centers for the disabled have been analyzed. Results: The result of this study can be summarized in three points. The first one is that public dentistry in Korea are distributed public dental hospital for the disabled in Seoul and public dental healthcare centers for the disabled in eight provinces. The second one is that the types of the dental healthcare center for the disabled are divided with remodeling type which is diverted from existed dental or medical out patient clinic space or independent building type which is planned with a new and exclusive usage for the disabled. The third one is that the space configuration of dental healthcare center for the disabled is needed more required programs, larger treatment unit space, and more private clinic space than typical dental treatment plan. Implications: This study is the starting point for the research of public dentistry and it is necessary to analyze the dental prevention and dental public policy to develop the public dental healthcare system.

• Journal of The Korea Institute of Healthcare Architecture
• /
• v.2 no.3
• /
• pp.53-61
• /
• 1996

The purpose of this study is to get the data for architectural planning and design of health center, through researching actual conditions of the facilities. So statistical data and activities of facilities were surveyed and analyzed. Finally, the present conditions and problems of the facilities were discussed and these results can be utilized for the data necessary for design and planning of health center.

• Proceedings of the SAREK Conference
• /
• 2004.06a
• /
• pp.40-40
• /
• 2004

• Journal of the Korean Institute of Rural Architecture
• /
• v.19 no.1
• /
• pp.1-9
• /
• 2017

The purpose of this study is to clarify the actual condition of the multicultural family support center in Gyeongnam area in order to provide more faithful services for the multicultural family members. As a research method, the social characteristics of multicultural families were examined through literature review, and the installation and operation standard of the support center was reviewed. In addition, 15 multicultural family support centers set up and operated in Gyeongnam area were identified and the characteristics of the plan composition of the detailed case facilities were identified. As a result, the characteristics of multicultural family support center area size, composition type, and operation type were revealed. Through analysis of the spatial areas of the regional support centers of cities and counties, it was revealed that 42.1% of the education area, 40.7% of the administrative area, 12.0% of the consultation area and 5.2% of the exchange area were analyzed. In addition, when the dedicated area of the multicultural family support center is a small-scale facility, it has been found that the space for administration, counseling, and education is secured.