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Dendrochronological Dating for the Gwanghanru Pavilion, Namwon, Korea (남원 광한루 목부재의 연륜연대 분석)

  • Park, Won-kyu;Kim, Yo-jung;Han, Sang-hyo
    • Korean Journal of Heritage: History & Science
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    • v.47 no.1
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    • pp.152-163
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    • 2014
  • In this study, Gwanghanru Pavilion (Namwon-si, Cheonbuk Province) was dated by tree rings of pines (Pinus densiflora Sieb. et Zucc., 'sonamu' in Korean). The present Gwanghanru Pavilion is composed of three parts: main, wing and entrance parts. The main part is known to have been built in 1626 and the entrance hall in 1879, but the date of construction of the wing part is still unknown. We dated a total of 55 wood samples which were replaced during the repair process in 2001~2002. Tree-ring dates indicated that both main and wing parts were built in 1626. Tree rings also revealed that the entrance hall was constructed in 1880~1881, and both main and wing parts were heavily repaired together while appending the entrance hall. In conclusion, dendrochronology, i.e., tree-ring dating, was a useful and accurate method to identify the critical dates-such as the dates of original construction, reconstruction, repairs and extensions-for the history of Korean traditional buildings.

A Convergence Study through Structural Analysis for Lightweight of Brake Pedal for Racing Spec Installed with Balance Bar (밸런스 바가 장착된 레이싱 스펙 브레이크 페달의 경량화 구조 해석을 통한 융합연구)

  • Oh, Bum-Suk;Cho, Jae-Ung
    • Journal of the Korea Convergence Society
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    • v.10 no.10
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    • pp.123-128
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    • 2019
  • The structural analysis for light weight on the brake pedal of the racing spec installed with the balance bars of the four models were performed in this study. By utilizing two materials of steels and aluminum alloys, four shapes were analyzed. It is generally assumed that the magnitude of force a person may incur when riding in a car is 1000 N. The fixed points are designated as the parts at which the bolts and pedals are fixed and the mounting part of the balance bar applied by the stress transmitted through the rod when the pressure of the master cylinder rises and the operation stops. Through this analysis study, it is thought that the vulnerability of each brake pedal model can be investigated and the transmission efficiency of the brake pedal can be increased by light weight. As the design data with the durability of brake pedal obtained on the basis of this study result are utilized, the esthetic sense can be shown by being grafted onto the part of car at real life.

A Study on the Design Character of the Wooden House in Korea -Focused on Inner Space Design of Suburbs House- (한국 도시근교 목조주택의 디자인 특성에 관한 연구(I) -내부공간 구성을 중심으로-)

  • 유영희;김란기
    • Korean Institute of Interior Design Journal
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    • no.21
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    • pp.107-113
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    • 1999
  • The purpose of this study is to suggest the materials for developing the new house style by analysing the space characteristics of wood frame houses in suburbs of Seoul. For this, we analysed 45 drawings(site plan, floor plan, elevation, section) that were designed by MICHOO, WOOD-LAND, STUGA and CHOWONJUTECK company etc. The space design characteristics that we found are as follows; 1. The wood is fragile to humidity. Therefore this characteristic is especially considered in designing the space of bathroom and utility room. 2. It is the merit of wood frame house that inner space can be designed variously by using spilt-level and the slope of roof. 3.The public space and private space are completely separated in most cases and the stair is located in the middle of house. This structure of house is short of horizontal openness. Instead, most houses gets vertical openness by making second floor on the living room opev. 4. In wood frame house as the rural house, the outer space is well used by setting up deck and balcony. The outer spaces like deck and balcony are usually used as a part of life space in connected with living room, dining room, master bed room and family room. 5. The public spaces like kitchen, living room, dining room and family room are considered so important in design that those are arranged in front in order to have good outlook and directiov.

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An innovative Approach to Teaching-learning Process through Multimedia Presentation (멀티미디어 프레젠테이션을 통한 영어 학습과정 연구)

  • Lee, Il Suk
    • Journal of Digital Contents Society
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    • v.15 no.2
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    • pp.173-179
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    • 2014
  • Useful It is very crucial to establish the learning environment with a creative technology for those who are going to learn English in terms of multimedia presentation. This kind of technologies make it possible for students to practice English suitable with their level and compatible with lesson plan. English grammar plays a leading role to study English as a second language for the language is required to master the structure, part of speech, and tense. The purpose of this study is to explore the a innovative English teaching and learning approach based on the multimedia presentation to teach English grammar with an effect for those students are studying English, when they are learning English grammar with power point or complex multimedia presentation.

Governance Strategies for Trade in Financial Services in Korea (금융서비스의 무역거버넌스 전략)

  • Park, Moon-Suh
    • International Commerce and Information Review
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    • v.11 no.4
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    • pp.229-259
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    • 2009
  • Financial service in economy is same with neural net or vein net of human body. Moreover, every economic entity which has experienced global financial crisis in 2008 is realizing more importance and power of financial service, and is recognizing financial service as a part of new engine of growth for economic development. As global linkages relating financial service in the industry are deepened, we can expect that the economic interests between countries are more conflicted. Because financial service is regarded as critical factors in order to ensure future competitive advantage, more active change of financial service paradigm in Korea is required. The purpose of this paper is to analyze the paradigm of financial service in global business aspect, to prepare the global governance strategies about financial service, and to bring up some ideas for Korea's economic development after global financial crisis by intensifying the competitiveness of financial services. It is suggested that Korea should prepare the "Master Law for Financial Service" (provisional name) in advance as governance strategy for financial service. And not only establishing the financial risks prevention system and consumer's protection agency, but financial competitiveness strengthening actions will have to be included in governance strategy of financial service in Korea.

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Development of a Compressor Design System Using Configuration Design Method (편집설계 기법을 이용한 압축기 설계 시스템 개발)

  • Lee, Kang-Soo
    • Korean Journal of Computational Design and Engineering
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    • v.16 no.1
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    • pp.52-60
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    • 2011
  • In this research, we developed a design system for a compressor of an air conditioner using solid CAD system. The developed design system has some characteristics. First, the design system used a configuration design method, so a designer can design a compressor very quickly by using the constructed master libraries. Next, the system was developed to be used not only by engineers but also by salesmen. It is very easy for a user to use it, so a salesman can get a result very easily with the design system. And it has some design modules which give a considerable convenience to designers. Actually, designers are accustomed to the module based design. Then, it has calculation and analysis functions. Volume and mass of a part, and interference between parts are calculated by using the geometric calculation function of a solid CAD system. Also a packaging calculation was implemented to get the smallest space to package compressors for transportation and storing. An interface with a program to analyze the vibration of a compressor was developed in this design system. The design system is similar to CBD (Case-Based Design) system in the view of the whole design process.

Improving Performance of Crimp Signal Analysis by Falling Edge Alignment and Parameter Error Estimation in CFM (CFM에서 하강 에지 정렬과 파라미터 에러 평가에 의한 크림프 시그널 분석 성능 향상)

  • Aurecianus, Steven;Kang, Taesam;Han, Chung Gwon;Park, Jungkeun
    • Journal of Institute of Control, Robotics and Systems
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    • v.22 no.9
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    • pp.686-692
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    • 2016
  • A Crimp Force Monitor (CFM) is equipment for detecting crimp errors by analyzing crimp signals obtained from force and strain sensors. The analysis is commonly performed by aligning a measured crimp signal with a reference signal and comparing their difference. Current analysis methods often suffer from wrong alignments that result in false negative detections. This paper presents a new crimp signal analysis method in CFM. First, a falling edge alignment is proposed that matches falling edges of the measured and the reference signals by minimizing the absolute difference summation. Second, a signal parameter error is introduced to evaluate the crimp quality difference between the measured signal and the reference. For calculating the signal parameter error, part of a signal is identified and divided into several regions to maximize the signal parameter errors. Experiments showed that the proposed method can improve the signal alignment and accurately detect bad crimps especially with the strain sensor.

Basic Study on Development of Ultra-high Strength Grout for Offshore Wind Turbines (해상풍력 발전기용 초고강도 그라우트 개발을 위한 기초적 연구)

  • Lim, Myung-Kwan;Ha, Sang-Su
    • KIEAE Journal
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    • v.15 no.1
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    • pp.155-160
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    • 2015
  • The annual average of energy sources is continuously increasing at a rate of 5.8%, and particularly, the power generation proportion of new/renewable energy is increasing significantly. Furthermore, South Korea has established a national energy master plan for 2008-2030 and is aiming at obtaining approximately 11% of total energy production from the wind turbine sector. Although offshore wind turbines are similar to wind turbines installed on land, they require materials with excellent dynamic properties and durability to prevent damage due to seawater at the lower parts and connecting parts. The lower parts of wind turbines are submerged in seawater, and the upper and lower parts are connected by filling the connecting part with grout. This paper describes the test results of the process of determining the mix ratios to develop ultra-high grout for offshore wind turbines. There is virtually no relevant technology regarding grout for offshore wind turbines in South Korea that can be referenced for the process of determining the mix ratios. Therefore, tests were conducted for determining compression strength, elastic modulus, flexural strength, density, constructability (floor test), and early strength by referencing a high-performance grout produced in South Korea, and the mixing process for achieving the goal strengths was described using the Korean Industrial Standards (KS) as the reference.

Fabrication of Metallic Nano-Filter Using UV-Imprinting Process (UV 임프린팅 공정을 이용한 금속막 필터제작)

  • Noh Cheol Yong;Lee Namseok;Lim Jiseok;Kim Seok-min;Kang Shinill
    • Transactions of Materials Processing
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    • v.14 no.5 s.77
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    • pp.473-476
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    • 2005
  • The demand of on-chip total analyzing system with MEMS (micro electro mechanical system) bio/chemical sensor is rapidly increasing. In on-chip total analyzing system, to detect the bio/chemical products with submicron feature size, a filtration system with nano-filter is required. One of the conventional methods to fabricate nano-filter is to use direct patterning or RIE (reactive ion etching). However, those procedures are very costly and are not suitable fur mass production. In this study, we suggested new fabrication method for a nano-filter based on replication process, which is simple and low cost process. After the Si master was fabricated by laser interference lithography and reactive ion etching process, the polymeric mold was replicated by UV-imprint process. Metallic nano-filter was fabricated after removing the polymeric part of metal deposited polymeric mold. Finally, our fabrication method was applied to metallic nano-filter with $1{\mu}m$ pitch size and $0.4{\mu}m$ hole size for bacteria sensor application.

NHS Hospital Pharmacist Training Programme in UK (영국의 NHS 병원약사 수련 현황)

  • Kim, Yun Jung
    • Korean Journal of Clinical Pharmacy
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    • v.25 no.4
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    • pp.209-215
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    • 2015
  • The aim of the research was to explore post-registration training opportunities for NHS hospital pharmacists which contributes to promote structural reform of the professional development and lifelong learning for Korean hospital pharmacists. In UK, all pharmacists are required to complete at least 9 Continuing Professional Development (CPD) entries per each year to maintain their professional registration. Types of accredited postgraduate qualification (part-time) in Pharmacy Practice available for hospital pharmacists are Postgraduate Certificate (PgCert, year 1), Postgraduate Diploma (PgDip, year 2), Master of Science (MSc year 3), and Professional Doctorate in Pharmacy programme (DPharm, 4-5 years or more). Clinical pharmacy diploma is more likely to become a minimum qualification in order to progress whilst working for the NHS. Pharmacy independent prescribers are allowed to prescribe all medications except cocaine, dipipanone, and diamorphine for the purpose of treating addiction within their competencies. NHS pharmacists are also classified by band point system depending on their practical/clinical knowledge and skills which starting from band 5 (Pre-registration pharmacist) up to band 9. Various learning and development options are also offered including teaching sessions, conferences and local forums.