• Journal of Korean Association for Spatial Structures
• /
• v.13 no.1
• /
• pp.69-77
• /
• 2013

This study is the research appling the representative Displacement-Based Design which is the basic concept of Direct Displacement Based Design proposed by Chopra and Goel to original Reinforced Concrete moment frame and determining the thickness of retrofit Steel Jacket about the Maximum design ground acceleration, and developing the more improved Algorithm as well as program by the Retrofit Design method and Nonlinear analysis by the Performance design method before and after reinforcement appling the determined retrofit thickness. It also shows the result of the seismic performance improvement which is the ratio of seismic performance appreciation result yield displacement 19%, yield strength ratio 24%, displace ductility ratio the maximum 27% comparing Multi degree of freedom, column member of Reinforced Concrete with the performance improvement column member considering the thickness of the determined Steel Jacket. The developed Algorithm and program are easy to apply seismic design and application to the original Reinforced Concrete building, at the same time, it applicate to display well the design result of Target displacement performance level about nonlinear behavior.

• Journal of Advanced Navigation Technology
• /
• v.11 no.1
• /
• pp.43-49
• /
• 2007

In this paper, the performance of OFDM/64QAM systems under Rummler model based cable channel is evaluated through computer simulation, and then the degree of performance improvement is estimated when adopting adaptive LMS equalizer. From the performance evaluation results, in the Rummler two-ray channel model, it is known that the performance improvement degree by adopting equalizer is greatly increased in case of attenuation coefficient of reflected ray (b) being less than 0.15, but when attenuation coeffcient (b) is larger than 0.15, the performance improvement degree by adopting equalizer shows little changes in almost all range of Eb/No.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.17 no.3
• /
• pp.201-208
• /
• 2005

This study presents the experimental study on improvement of frost/defrost performance in an heat pump system with newly developed fin and multiple compressors. As multiple compressors system, the variable and single speed compressor combinations has been introduced and compared with single speed 1-compressor system in a view point of improvement of frost/defrost performance. Also, newly developed corrugate shaped fin has been compared with conventional louver shaped fin. The frost/defrost performance is defined and some parameters are compared to discuss the effect of each combination. From this experimental study, it is known that if the variable and single speed compressor combination system equipped with corrugate shaped fin, the system performance has greatly improved not only for heating capacity, but also for frost performance.

• Industry Promotion Research
• /
• v.1 no.2
• /
• pp.55-61
• /
• 2016

This study analyzed the effect of workplace innovation on business performance and labor condition improvement. The study results showed that work process standardization and quality control positively affected business performance. Also, downsizing, reducing individual subcontract, expanding non-core business outsourcing positively affected both business performance and labor condition improvement. In addition, labor union's participation moderated the effect of work process innovation on business performance. This study provided implications for analyzing the effect of workplace innovation comprehensively and extending the scope of study to personal employee dimension.

• The KIPS Transactions:PartD
• /
• v.13D no.1 s.104
• /
• pp.75-86
• /
• 2006

This paper studied the improvement of software process of the software firms. Software process infrastructure level of software process is very important. This study provided that software process infrastructure have an significant influence on the process level, process infrastructure management level, and software process performance. The result showed that software process high level is elevated through management activity of organization infrastructure and technical infrastructure. And organization performance is elevated through fit between process level and quality culture of software process. Problem factors of software process infrastructure improvement is lack of process improvement mind, leadership and investment. Therefore software firms must construct process improvement through supporting of process quality mind and investment with process infrastructure improvement.

• Asian-Australasian Journal of Animal Sciences
• /
• v.16 no.6
• /
• pp.794-799
• /
• 2003

A study was conducted on 2102 records of 808 crossbred cows of various genetic groups maintained under 'All India Coordinated Research Project on Cattle' at C C S Haryana Agricultural University, Hisar, over 25 years period (1968-1993) with an objective to assess and compare the amount of percent improvement and heterotic effect for different performance traits in various genetic groups produced under this programme. Survivability sharply and significantly declined from 1/2 to $3/4^th$ bred and further from $3/4^th$ to inter-se bred. This may be due to periodic and management differences in addition to the higher level of exotic inheritance and decreased heterotic effect over the filial generations. Jersey and Holstein Friesian crosses among 1/2 breds and their 50% inheritance among $3/4^th$ and inter-se breds had highest improvement and heterosis in reproduction and production traits respectively. Among inter se bred genetic groups, BFH (I) had no recombination loss in SP and CI, while FJH (I), JFH (I) and FBH (I) had on recombination loss in AFC, LY, LL and PE. The crossbreeding of zebu cows with exotic breeds brings about spectacular improvement in comparison to the performance of zebu breed, while conventional selection over several generation would lead to only modest improvement. In addition to additive effect, there was sufficient heterosis in Jersey crosses for reproduction and Holstein Friesian crosses for production performance. Three breed crosses with exotic inheritance between 50 and 75 percent incorporating genes (25 to 50%) from both of these breeds is the best combination for stabilization.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.16 no.5
• /
• pp.899-908
• /
• 2021

Since the modern weapon system is composed of a complex system, it is quite difficult to derive the priority of performance improvement factors. In addition, research on the method for prioritizing quantitative performance improvement factors considering the opinions of stakeholders is insufficient. In this study, in order to quantitatively derive the priorities of performance improvement factors for K1 tanks and K2 tanks, a survey was conducted with experts with experience in tank development, and the preface data was analyzed using AHP, scoring method, and TOPSIS methods. As a result, priorities were quantitatively derived. The results of this study are expected to be used as decision-making indicators for stakeholders in the future weapon system development and performance improvement stage.

• Korean Journal of Construction Engineering and Management
• /
• v.13 no.5
• /
• pp.76-83
• /
• 2012

The purposes of this study are both to identify suggestions regarding the evaluation framework of construction policy performance based on the analysis of the 4th Master Plan for Improvement of Construction Technology and to provide recommendations that can be used for developing the 5th Master Plan for Improvement of Construction Technology. In order to achieve this purpose, a questionnaire was distributed to construction industry-related professionals and makes them evaluate the performance of the 4th Master Plan for Improvement of Construction Technology by performance index appropriacy, measurement appropriacy, and target level. In addition, comprehensive literature review was implemented to extract important points, which are related to policy evaluation, that can be considered factors in developing the 5th Master Plan for Improvement of Construction Technology.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
• /
• v.15 no.3
• /
• pp.189-197
• /
• 2022

With the development of high-performance computing technology and the advancement of numerical model, it is possible to predict the better weather forecasting. The purpose of this paper is the performance improvement for the SCAM climate model for the model running time excluding the compilation time. Therefore, the model previously performed using the Intel Fortran Compiler was changed to PGI Fortran Compiler. To this end, we reconfigure system environment variables, reset compilation options, install dependencies SW and library, and modify source code. In addition, we proposed and applied the 'PGI Compile with OpenACC' method. As a result, when the compiler was changed from intel to PGI, it led to an improvement of 6.08% in running time and when the openACC method was applied, it led to an improvement of 43.05% in running time. This demonstrates that the PGI Compile with OpenACC method proposed in this paper leads to excellent performance.

• Korean Institute of Interior Design Journal
• /
• no.25
• /
• pp.42-48
• /
• 2000

The building remodeling is providing a lot of solutions - structural, aesthetic, environmental, and energy performance improvement - in improving buildings performance and environment. The remodelings influences on our society are resource conservation, environmental conservation, expansion of construction market, and creation of new employment. The three principal remodeler groups involved in this building remodeling are general construction contractors, interior architecture contractors, and ESCO (Energy Service Company). Having a representative character, this study classifies remodeling methods into five types: structural remodeling, spatial remodeling, exterior remodeling, environment-friendly remodeling, and ecological remodeling.