• 대한안전경영과학회지
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• 제9권3호
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• pp.95-102
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• 2007

Nowadays, globally high-grade companies have done their best for increasing their competitive power through a many kinds of method in incisive competition for making certain of a pacesetting position. Among the rest, Six Sigma have been the best methodology of improving process and have proven to be effective by the result of improving process in many of manufacturing business, however, it has not obtained excellent results in the transaction business. In transaction business, a $30\sim50%$ costs in total costs is generated by slow-speed working and reworking. The slow processes decrease the quality and increase the cost, which decreases customer satisfaction, and finally the income is decreased. All of them are so called wastes in processes. For this, adopting of lean six sigma methodology in process management can eliminate the wastes and reduce the variation. This study focuses on distribution with the domains like capacity, layout, amount of location, assignment of product, operation procedure and operation rule in order to improve these domains, we make a further application of eight analysis ways based on DMAIC method for improving operation of processes of distribution center as the third profit source. The goal of this study is to trace an approach that can easily adopt of Lean Six Sigma in operational management of distribution center by a kind of data, analysis method and template.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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• pp.155-158
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• 2007

Printed organic thin-film transistor(OTFT) to use as a switching device for an organic light emitting diode(OLED) were fabricated in the microcontact printing and direct printing processes at room temperature. The gate electrodes($5{\mu}m$, $10{\mu}m$, and $20{\mu}m$) of OTFT was fabricated using microcontact printing process, and source/drain electrodes ($W/L=500{\mu}m/5{\mu}m$, $500{\mu}m/10{\mu}m$, and $500{\mu}m/20{\mu}m$) was fabricated using direct printing process with hard poly(dimethylsiloxane)(h-PDMS) stamp. Printed OTFT with dielectric layer was formed using special coating system and organic semiconductor layer was ink-jet printing process. Microcontact printing and direct printing processes using h-PDMS stamp made it possible to fabricate printed OTFT with channel lengths down to $5{\mu}m$, and reduced the process by 20 steps compared with photolithography. As results of measuring he transfer characteristics and output characteristics of OTFT fabricated with the printing process, the field effect characteristic was verified.

• 전기학회논문지
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• 제65권7호
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• pp.1277-1282
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• 2016

The term "Big Data" has been defined to encapsulate a broad spectrum of data sources and data formats. It is often described to be unstructured data due to its properties of variety in data formats. Even though the traditional methods of structuring data in rows and columns have been reinvented into column families, key-value or completely replaced with JSON documents in document-based databases, the fact still remains that data have to be reshaped to conform to certain structure in order to persistently store the data on disc. ETL processes are key in restructuring data. However, ETL processes incur additional processing overhead and also require that data sources are maintained in predefined formats. Consequently, data in certain formats are completely ignored because designing ETL processes to cater for all possible data formats is almost impossible. Potentially, these unconsidered data sources can provide useful insights when incorporated into big data analytics. In this project, using big data solution, Apache Spark, we tapped into other sources of data stored in their raw formats such as various text files, compressed files etc and incorporated the data with persistently stored enterprise data in MongoDB for overall data analytics using MongoDB Aggregation Framework and MapReduce. This significantly differs from the traditional ETL systems in the sense that it is compactible regardless of the data formats at source.

• 한국재료학회지
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• 제29권8호
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• pp.483-490
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• 2019

Currently, the Korean nuclear industry uses ZIRLO as material for nuclear fuel cladding(zirconium alloy). KEPCO Nuclear Fuel is in the process of developing a HANA alloy to enable domestic production of cladding. Cladding manufacture involves multistage heat treatments and pickling processes, the latter of which is vital for the removal of defects and impurities on the cladding surface. SMUT that forms on the cladding surface during such pickling process is a source of surface defects during heat treatment and post-treatment processes if not removed. This study analyzes ZIRLO, HANA-4, and HANA-6 alloy claddings to extensively study the SEM/EDS, XRD, and particle size characteristics of SMUT, which are second phase particles that are formed on the cladding surface during pickling processes. Using the analysis results, this study observes SMUT formation characteristics according to Nb concentration in Zr alloys during the washing process following the pickling process. In addition, this study observes SMUT removal characteristics on cladding surfaces according to concentrations of nitric acid and hydrofluoric acid in the acid solution.

• 유통과학연구
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• 제20권10호
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• pp.39-50
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• 2022

Purpose: This report aimed to review the literature on the research topic "Imports and exports between Colombia and Asian countries in the framework of logistics processes in international trade" of the last ten years. Research design, data and methodology: Documents indexed in the Web of Science metasearch engine were used as a source of information. The 500 most relevant downloaded in bibTex format were worked on and their processing was carried out using the statistical software Excel and R, through the Bibliometrix package. Results: The results indicate that the country that makes the most contributions to the research area is the United States (274), the author that publishes the most is Bahmani-Oskooee M., with (11) research, 424 of the documents found are journal articles, and the institution that contributes the most in this area is the University of Wisconsin. Conclusions: It is concluded that scientific production within the framework of international trade between Asia and Colombia has had a notable increase, which can be explained by the opening of both continents as strategic allies and the new vision of logistics processes taking advantage of the strategic location of countries within the Pacific Ocean.

• 인지과학
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• 제4권2호
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• pp.201-262
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• 1994

이글의 목적은 유추에 의한 사상(analogical mapping)과 규칙계발(rule development)이란 측면에서 소프트웨어의 재사용이 가진 인지과정상의 특성을 밝히는 것이다. 이를 위해서 소프트웨어 재사용시 나타나는 비일관적인 표상이 인지과정에 미치는 영향을 알아보기 위해서 원문제(source problems) 와 표적문제(targent problems)그리고 그들 문제의 해(solution)로서의 프로그램에 대한 내적표상을 조작한다. 본 연구를 의한 실험은 두자인 요인으로 구성된다-1)원문제와 표적문제사이의 구조적인 일관성의 정도(the degree of structural consistency), 2)원문제와 그해사이의 구조적인 일관성의 정도-프로토출으 분석결과는 위의 두용인이 원/표적사이의 사상(mapping)의 인지과정,규칙계발과정, 그리고 유추에 의한 사상과 규칙계발사이의 상호관계에 영향을 미치는 것을 알 수있다. 마지막으로 소프트웨어 재사용에 대한 이상의 결과를 통해서 나타나는 시준점이 가진 의미를 알아본다.

• 한국광학회지
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• 제15권6호
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• pp.583-590
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• 2004

비전을 이용한 광학식 검사공정이나 그 밖의 광학 현미경을 이용한 측정에 있어서 초점조절은 곧바로 측정 정밀도에 영향을 주는 중요한 요소이다. 본 논문에서는 핀홀 대신 광섬유를 사용하는 공초점 현미경 구조와 하나의 광섬유가 광원과 검출기의 역할을 동시에 수행하는 상반구성(reciprocal scheme)을 적용함으로써 간결하게 시스템을 구성하면서 광축 정렬을 용이하게 하였으며, 압전소자(PZT)를 이용한 광섬유 광원의 광축 방향 변조를 통해 방향 정보가 실린 초점오차 신호를 획득함으로써 빠른 초점조절을 구현하였다. 대물렌즈 변조방식과 달리 광원 변조방식은 현미경 시스템에 미치는 물리적 영향을 줄일 수 있으며, 기존의 장치에 탑재가 비교적 용이하다는 장점을 갖는다. 본 논문에서는 변조 진폭과 시편의 반사도 및 기울기 변화에 따른 초점오차 신호의 변화를 측정하였으며, 거울 시편에 대한 초점조절을 통해 본 시스템의 성능을 평가해 보았다. 또한 종방향 특성곡선의 반치폭 비교실험을 통해 광원 변조는 광축 방향 분해능에 영향을 주지 않음을 확인하였다.

• 혜화의학회지
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• 제14권1호
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• pp.15-22
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• 2005

Source : sources used by Qianghuo is Ostericum koreanum Maximowicz, Notopterygium incisum Ting and Notopterygium forbesii Boissier etc. in Korea and China. And we cirulate a Qianghuo dividing Nanqianghuo and Beiqianghuo. Thought source of Korea Qianghuo is different from china's we use a same name. And source of Beiqianghuo has not made clear yet. According to research accomplished 2002, we have to use Nanqianghuo producted at Jinbu in aspect of aspect. but, Beiqianghuo the outside form of Beiqianghuo similar to china so we think that we have to more make clear source of domestic Qianghuo, verify a source Beiqianghuo and re-establish about effects and functions of domestic Qianghuos. Culture : A term of culture is an nearly one year. so to product Qianghuo of good quality, we must plant directly in autumn or raise seedlings and transplant in spring. Processing : To protect turning to brown, Qianghuo are cirulate mostly as the original form without washing in water, To proteet crushing of Qianghuo when we cut off, Qianghuo were cut off after being soaked in water or steamed by heat. So when we wash and cut off, it has to be made processes which have no decreases of medical effects and be suggested a proper index which verify a medical effects. In summury, after harvesting Qianghuo the first washing $\rightarrow$ the first dry $\rightarrow$ selection $\rightarrow$ the second washing $\rightarrow$ the second dry $\rightarrow$ selection $\rightarrow$ cutting off $\rightarrow$ the third dry.

• 한국정보통신학회논문지
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• 제22권4호
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• pp.575-580
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• 2018

본 논문에서는 병원에서 환자의 대기시간을 실시간으로 모니터링하기 위한 오픈소스 기반의 시스템을 제안한다. 환자의 위치 데이터를 실시간으로 분석, 처리하기 위한 고성능 스트림 처리 시스템을 비용 효율적으로 구축하기 위해서는 오픈소스 프로젝트를 활용하는 것이 필요하다. 빅데이터를 처리하기 위한 오픈 소스 시스템으로 다양한 하둡 서브프로젝트들로 구성된 하둡 에코시스템이 있다. 본 논문에서는 먼저 시스템 요구사항을 정의하고 하둡 에코시스템에서 이를 만족시키기 위한 몇 가지 오픈소스 프로젝트들을 선정한다. 그리고, 선정된 아파치 스파크, 아파치 카프카 등을 이용한 시스템 구조 설계 및 상세 모듈 설계를 제안한다. 제안된 시스템은 기존 시스템과의 연계 및 오픈소스 프로젝트를 통해 구축비용을 절감할 수 있으며, 또한 분산 스트림 처리를 통해 고성능과 안정성을 확보할 수 있다.

• 한국레이저가공학회지
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• 제8권3호
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• pp.21-26
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• 2005

A bonding process between tape-carrier package and a glass panel with anisotropic conductive film (ACF) has been investigated by making use of high power diode laser as a heat source for cure. The results from modeling of process and from optical properties of layers showed that heat absorbed from polyimide film surface and ACF layer is dominant source of curing during laser illumination. Laser ACF bonding has better bonding quality than conventional bonding in view of peel strength, flatness, pressure unbalance and processing time. New ACF bonding processes by making use of high power diode laser are proposed.