• Title/Summary/Keyword: Foundation inspection

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Study on the Nonlinear Analysis Model for Seismic Performance Evaluation of School Buildings Retrofitted with Infilled Steel Frame with Brace (철골 끼움가새골조로 보강된 학교건물의 내진성능평가를 위한 비선형 해석 모델에 관한 연구)

  • Yoo, Suk-Hyeong;Ko, Kwan-Wook
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.26 no.4
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    • pp.65-72
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    • 2022
  • Recently, damage to buildings due to earthquakes in Korea occurred mainly in school buildings and Piloti-type multi-family houses, highlighting the need for seismic retrofit for buildings of the same type. In the early days of the seismic retrofit project for school facilities, various patented methods using dampers as a ductile seismic retrofit method were applied without sufficient verification procedures. However, in 「School Facility Seismic Performance Evaluation and Retrofit Manual, 2021」, when the patented method is applied, it must be applied through a separate strict verification procedure, and instead, the strength/stiffness retrofit method was induced as a general method. In practice,when evaluating seismic performance for retrofit by infilled steel frame with brace, the analysis model is constructed by directly connecting only the steel brace to the existing RC member. However, if the frame is removed from the analysis model of the infilled steel frame with brace, the force reduction occurring on the existing RC member near the retrofit is considered to be very large, and this is judged to affect the review of whether to retrofit the foundation or not. Therefore, in this study, preliminary analysis with variables such as whether or not steel frame is taken into account and frame link method for the analysis model of RC school building retrofitted by infilled steel frame with brace and nonlinear analysis for actual 3-story school building was performed, and basic data for rational analysis model setting were presented by comparing preliminary analysis and pushover analysis results for each variable.

A Study on Improvement Measures for the Design Documents Delivery System in Public Road Construction Projects (공공 도로건설사업에서의 설계도서 납품체계 개선방안에 관한 연구)

  • Ok, Hyun;Kim, Seong-Jin;Kim, Tae-Hak;Ju, Ki-Bum
    • International Journal of Highway Engineering
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    • v.20 no.2
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    • pp.45-55
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    • 2018
  • PURPOSES : This study aims to survey and analyze the status of the design and completion documents output delivery system in public construction projects in order to assess the problems of the Ministry of Land, Infrastructure and Transport (MOLIT)'s electronic delivery system, with a focus on roads and rivers, and to offer improvement measures. METHODS : This study first surveys and analyzes laws and existing study trends with regard to the design and completion documents output delivery system in public construction projects. It further analyzes the status of the output delivery system in public construction projects, including roads, rivers, expressways, water resources, and railroads. In addition, a comparative analysis of the current electronic delivery system of MOLIT and Korea Expressway Corporation in the road field is conducted, and the problems and improvement measures for MOLIT's electronic output delivery system are presented. This study seeks to analyze problems and prepare improvement measures with regard to road and river public construction projects, as ordered by MOLIT's five regional offices. RESULTS : This study sought to prepare the electronic output delivery system with regard to public construction projects and present the analysis of its major problems and improvement measures in four categories: "the preparation of electronic design documents output delivery system improvement measures including inspection and delivery," "preparation of guidelines, systems, etc., concerning electronic design documents," "preparation of improvement measures for the construction project management system and electronic design document support tools", and "linking of MOLIT's electronic output delivery system with relevant agencies and the expansion thereof to local governments." CONCLUSIONS : This study analyzed the current status and problems of the MOLIT's electronic output delivery system in the field of road and river construction projects, and presented corresponding improvement measures. This study is expected to address the problems of the MOLIT's electronic output delivery system, and to provide the foundation for the preparation of an efficient electronic output delivery system for design and completion documents. In addition, this study is expected to boost the quality and utilization of the electronic design documents output, and to exchange, share, and link construction information among relevant agencies so as to prepare the foundation for sharing construction information.

Color Arrangement Evaluation on Working Clothes for Safety and Integrated Environment Harmony in Machinery Industry Fields (기계 산업 분야의 통합 환경 조화와 안전을 위한 작업복 색채 배색 평가)

  • Park, Hyewon;Yang, Junghee
    • Journal of Fashion Business
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    • v.16 no.5
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    • pp.207-219
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    • 2012
  • It is intended to study the colors of work environment and the working clothes colors between humans and environment with application of the arrangement of working clothes colors to domestic machinery companies that play pivotal roles in the industry of Korea. The purpose of this study is to provide the foundation of color plan for the integrated environmental harmonization and the safety of industrial sites by analyzing the photographs of working clothes in the sires in consideration of the functions of colors (clearness, attention-getting, and safety) using the Faber Birren's Color Harmony and by analyzing the result of a questionnaire survey. The study was conducted by the method to shoot a worksite using a digital camera after wearing 24 sets of uniforms, which were developed by the color plan established in a previous study, in the same worksite. The shooting place was an outdoor steel sheet inspection site of D company, a machinery company in Changwon-si, Gyeongnam, and the intensity of illumination was 2400lux. 24 pieces of images were printed in 5x7 inch size and a questionnaire survey was performed at 5-point scale. The questionnaire survey was performed for 13 subjects consisting of 6 field professionals having more than 30 years of experiences, 4 clothes color professionals, and 3 industrial engineering professionals. The result of the survey was statistically analyzed by the method of frequency analysis using IBM SPSS Statistics 20 Program. As the result of assessment of basic four colors (yellow green, sky blue, blue, and violet) of working clothes, yellow green, sky blue, and blue showed high mean values in (Tint)+(Shade)+(Tone)+(Gray) equation indicating that its is a harmonized equation.

Analysis on Factors of Importance and Performance in terms of Securing Customers of Farm Restaurants - Based on the Case of Bibijeong in Wanju-Gun - (농가레스토랑 이용고객의 중요도-만족도 분석 - 완주군 비비정을 사례로 -)

  • Han, A-Reum;Han, Jin;Lee, In-Jae;Jang, Dong-Heon
    • Journal of Korean Society of Rural Planning
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    • v.21 no.2
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    • pp.163-175
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    • 2015
  • This study aimed to analyze factors of importance and performance picked by customers of Bibijeong, a farm restaurant operated by the local community of Wanju-gun. Major points include: Recognition paths mostly were word of mouth and mass media, types of visit were in the company of friends, family members or work colleagues, and purposes of visit included consumption of meal and identifying features of the restaurant. Secondly, factor analysis showed that level of facility, atmosphere/cleanness, diversity of menu, employees, ingredients and network. The Cronbach Alpha coefficient was +0.6. Thirdly, average of importance of factors was 3.861 while average performance was 3.429. IPA analysis showed that employee(communication, customer contact) in the first quadrant proved the need for fast improvement through training. Atmosphere/cleanness (interior atmosphere, table clean, kitchen cleanliness, clean dishes, interion design) and employee(proficiency, menu recognition), foodstuff(freshness, origin, safety) in the second quadrant showed that the marketing strategy of improvement as well as maintaining current status is needed, including regular training and hygiene inspection. The third quadrant contains facilities(disability, baby, fire protection) and food menu(food packing, various menu, creative menu, menu description), network(village economic links), which showed the need for gradual improvement. The forth quadrant contains network(sights's near contains. The results so far can be summed into the statement that overcoming the basic functionality of providing meals and linking the restaurant with local attractions and local economy would be need, as well as building up the image of unique farm restaurant with local features, so that Bibijeong can serve as the centerpiece of community and foundation of exchange with other areas.

New Galaxy Catalog of the Virgo Cluster

  • Kim, Suk;Rey, Soo-Chang;Jerjen, Helmut;Lisker, Thorsten;Sung, Eon-Chang;Lee, Youngdae;Chung, Jiwon;Pak, Mina;Yi, Wonhyeong;Lee, Woong
    • The Bulletin of The Korean Astronomical Society
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    • v.39 no.2
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    • pp.50-50
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    • 2014
  • We present a new catalog of galaxies in the wider region of the Virgo cluster, based on the Sloan Digital Sky Survey (SDSS) Data Release 7. The Extended Virgo Cluster Catalog (EVCC) covers an area of 725 deg2 or 60.1 Mpc2. It is 5.2 times larger than the footprint of the classical Virgo Cluster Catalog (VCC) and reaches out to 3.5 times the virial radius of the Virgo cluster. We selected 1324 spectroscopically targeted galaxies with radial velocities less than 3000 km s-1. In addition, 265 galaxies that have been missed in the SDSS spectroscopic survey but have available redshifts in the NASA Extragalactic Database are also included. Our selection process secured a total of 1589 galaxies of which 676 galaxies are not included in the VCC. The certain and possible cluster members are defined by means of redshift comparison with a cluster infall model. We employed two independent and complementary galaxy classification schemes: the traditional morphological classification based on the visual inspection of optical images and a characterization of galaxies from their spectroscopic features. SDSS u, g, r, i, and z passband photometry of all EVCC galaxies was performed using Source Extractor. We compare the EVCC galaxies with the VCC in terms of morphology, spatial distribution, and luminosity function. The EVCC defines a comprehensive galaxy sample covering a wider range in galaxy density that is significantly different from the inner region of the Virgo cluster. It will be the foundation for forthcoming galaxy evolution studies in the extended Virgo cluster region, complementing ongoing and planned Virgo cluster surveys at various wavelengths.

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A Study on the Counterplan for the Reinforcement of Port State Control - Primarily on the Korean Shipping Companies - (항만국통제 강화에 따른 우리나라 해운기업의 대응방안에 관한 연구)

  • Choi. U.;Shin, H.W.;Pyo, H.Y.;Choi, Y.R.
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.9 no.1
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    • pp.1-15
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    • 2003
  • A recent trend of global shipping industry adopting Port State Control (PSC) system is recognized as a proficient mechanism in preventing maritime accident and protecting marine environment. Disadvantages of Korean shipping companies in PSC inspection are unavoidable as Tokyo MOU imposed priority listed flag to Korea Having stated above, appropriate research and prompt preparation in compliance with current PSC requirements for the Korean shipping companies have become an immediate need The objectives of this study are: First, to review in understanding of PSC in overall and foundation of enforcement. Second, to study interaction of international treaties regarding PSC. Third, to compare practical compliance among the countries and to open up a case study on Korean shipping companies in adopting PSC Last, to suggest direction to the Korea shipping companies the most proficient way in compliance with the current Tokyo MOU requirement.

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A Survey on the Management Status of Extramural Herbal Dispensaries (원외탕전실 관리현황 설문조사 연구)

  • Ahn, Ung-chan;Kim, Hyeon-Dong;Kim, Ji-Hoon;Rho, Tae-Won;Han, Sang-Yong;Kim, Yun-Kyung
    • Herbal Formula Science
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    • v.24 no.1
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    • pp.1-16
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    • 2016
  • Objectives This study was conducted to investigate the management status of extramural herbal dispensary facility, which could serve as a foundation for further research and policy establishment.Method According to herbal dispensary data collected by Ministry of Health and Welfare, 78 sites were confirmed among 1,160 sites which checked extramural herbal dispensary facility. We carried out a survey on them. The survey consisted of 42 questions including general provisions, personnel management, spaces and facilities, equipment and utensils, procedure requirement for production and/or processing.Results From their responses, hygiene was regarded generally admittable. In personnel management, some answers that herbal medicines were prepared not by Korean medicine doctor or pharmacist, but by general worker. On preparation method, dosage frequency and volume were different among preparation facilities. Regarding facility management, prescription inspection was substantially carried out in many extramural preparation facilities, however, some of them was not.Conclusion There was a need for regulation of detailed management including facility, preparation, personnel management, etc., of extramural preparation facility. Furthermore, There was also a need for standardization of procedure on decoction, water management, medicinal herbs management, etc.

Optimization of Physical Conditions for Caviar Analog Preparation Using Calcium-alginate Gel Capsules

  • Ji, Cheong-Il;Cho, Sueng-Mock;Yun, Young-Soo;Kim, Seon-Bong
    • Fisheries and Aquatic Sciences
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    • v.10 no.3
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    • pp.103-112
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    • 2007
  • High prices, overfishing, and contamination have limited the availability of natural caviar as a food product. We attempted to apply encapsulation by calcium-alginate gel membranes to caviar analog preparation in an effort to produce a high-quality replacement for natural caviar. Physical conditions of stirring speed $(X_1,\;rpm)$ and gelation time $(X_2,\;min)$ as the independent variables for gelation were optimized by response surface methodology. Sphericity $(Y_1,\;%)$, diameter $(Y_2,\;mm)$, membrane thickness $(Y_3,\;mm)$, rupture strength $(Y_4,\;g)$, and rupturing deformation $(Y_5,\;mm)$ were used as the dependent variables to compare characteristics of the capsules for caviar analogs with natural caviar. The values of the independent variables as evaluated by multiple response optimization were $X_1=-0.1271 (278 rpm) and $X_2=0.4436$ (12.2 min), respectively. Predicted values of the four dependent variables were $Y_1=97.7%,\;Y_2=2.97mm,\;Y_4=1,465g,\;and\;Y_5=1.15mm$. Membrane thickness $(Y_3)$ was eliminated from the dependent variables for multiple response optimization because it could not be measured with an image analyzer. The experimental values prepared under the optimal conditions for verification nearly coincided with the predicted values and satisfied the conditions of natural caviar.

Improvement for the Job Safety in the Scene Activities of Fire Fighters (소방공무원의 현장활동 안전성 확보를 위한 개선방안)

  • Kim, Jong-Seo;Lee, Dong-Ho;Park, Jong-Tae
    • Fire Science and Engineering
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    • v.28 no.1
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    • pp.58-63
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    • 2014
  • This study was performed to propose measures to improve and secure safety in the scene activities of firefighters. First, the majority of firefighters thought that working environment and equipment in fire station were inadequate for perforeming work tasks safely. Second, influential factors threatening safe scene activities mainly arose externally such as insecure working conditions of firefighting or emergency scene. Third, improvement in working environments was pointed out as the most urgent issue to secure safety. Firefighters recognized the expansion of field workforce in system, personnel management and the foundation of hospitals for firefighters hospital in working environment, and the development and distribution of safe equipment and change and inspection of air respirator facepiece on regular basis in equipment as urgent issues to be improved.

Basic Study on the Image Instrument of the Facial-form by the 3D-facial Scanner (얼굴스캐너를 활용한 안면형상 영상진단기의 기초 연구)

  • Kim, Gyeong-Cheol;Lee, Jeong-Won;Kim, Hoon;Shin, Soon-Shik;Lee, Hai-Woong;Lee, Yong-Tae;Chi, Gyoo-Yong;Kim, Jong-Won
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.22 no.2
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    • pp.497-501
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    • 2008
  • 3D facial scanner for an accurate analysis is measured precisely a distance in straight, a distance in curved line, an angle in 3D data, the area of surface. We can easy acquire 3D data by the method of 0.8sec in each scan with easy handling, simple merge to whole face, harmless and fast process. In the HyungSang medicine, the inspection of the facial shape includes the Dam(gall bladder) - Bang Kwang(urinary bladder) body, the Jung${\cdot}$Gi${\cdot}$Shin${\cdot}$Hyul, the six merdian types etc. And we will collect the evidence based date verifing in the HyungSang clinical medicine. As we will analyze the facial whole form and the size${\cdot}$length${\cdot}$angle of the facial part, put the facial form's standardization on a solid foundation.