• 한국전자파학회논문지
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• 제12권4호
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• pp.644-650
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• 2001

GPS Common-View 방식에 의해 원거리의 기분클럭에 위상동기되는 원격지 동기 시스템을 설계하고 제작하였다. 이원격지 동기 시스템의 측정결과 $10^{-12}$의 주파수 정확도를 유지하였으며 ITU-T 의 권고(G.811)를 만족하는 MTIE 특성을 보여주었다. 현재 전체적으로 자동화 기능을 갖는 초기모델이 구현되었으며 가까운 시일 내에 통신망 동기용으로 사용 될 수 있으리라 기대된다.

• 정보기술과데이타베이스저널
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• 제8권2호
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• pp.115-135
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• 2001

The objective of this paper is to develop a knowledge assets measurement model in Korea. There are relatively many researches on measuring knowledge assets of an organization. These previous researches, however, lack of comprehensive view of knowledge management and view of Korean organizational culture. We surveyed and analyzed previous researches, and found common factors to measure knowledge assets. We developed an updated version of knowledge assets index. The developed model has been validated for its fitness with real data of Korean companies. The result of this research can be used as a measurement tool for knowledge assets of public institutions as well as private companies.

• 제어로봇시스템학회논문지
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• 제10권2호
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• pp.171-177
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• 2004

Many instrumentations have been used to acquire the performance data of military systems fer many years. But they could not satisfy environmental specifications(vibration, shock, temperature) and processing speed to apply for the performance test of military systems because of having developed as common vehicles/fixed installation equipments. Thus a new rugged embedded measurement system is required to process large data in high processing speed(Maximum sample rate:1.25Mhz/ch) with rugged environmental specifications. We have developed embedded measurement systems by using PXI(PCI extension for Instrumentation)bus interface composed of a stand alone controller and versatile data acquisition boards(analog, digital, vision, temperature and small signal conditioner) on PC-based environment to solve these problems. Operation programs have been developed using Lab_View and the performances have been validated experimentally.

• 한국통신학회:학술대회논문집
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• 한국통신학회 2004년도 하계종합학술발표회논문초록집
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• pp.177-177
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• 2004

• Journal of Power Electronics
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• 제10권6호
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• pp.611-620
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• 2010

This paper presents a new architecture, called "Power Electronics Remote Wiring and Measurement Laboratory (PermLAB)", that translates a common gateway interface (CGI) string from a remote web user to a web server connected to a 3-dimension switching matrix board, can be used to switch on and off, and to control a cluster of instruments and components. PermLAB addresses real-time connection, switching, and data acquisition over the Internet instead of using simulated data. A software procedure uses a signature system to identify each instrument and component in a complex system. The Web-server application is developed in HTML, JavaScript and Java, and in C language for the CGI interface, which resides in a controller portion of LabVIEW. The LabVIEW software fully integrates the Web sever, LabVIEW data acquisition boards and controllers, and the 3-dimensional switching matrix board. The paper will analyze a half-wave rectifier (AC - DC converter) circuit connected over the Internet using the PermLAB. PermLAB allows students to obtain real data by real-time wiring of real circuits in the laboratory using a "virtual breadboard" on the Web. The software for the Web-based 3-dimensional system is flexible, portable, can be integrated into many laboratory applications or expanded, and easily accessible worldwide.

• 한국의류학회지
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• 제28권11호
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• pp.1470-1481
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• 2004

The purpose of this study was to research on facial shape to suggest a quantified data for the domestic apparel and beauty industry. Conducted a measurement research of 278 female college students, We took the photographs of front view and lateral view of the subjects by digital camera and obtained the 69 measurements through the facial measurement program. 264 ,subjects' measurement data were analyzed by various statistical methods such as descriptive analysis, factor analysis and cluster analysis. Using the 69 measurement items,4 factors were selected as key factors for the factor analysis of facial shape, the factors are: \circled1 Front face height \circled2 Side face radial length \circled3 Front face breadth \circled4 Ear height and Gnathion radial length. We categorized the facial shape into four types by cluster analysis. Type 4 is the most common facial shape in female college students: \circled1 Type 1: Round face \circled2 Type 2: Oval face \circled3 Type 3: Square face \circled4 Type 4: Heart shaped face According to the facial shape analysis, facial shape of female college students are consisting of Heart shaped face(34.8%), Round face(29.2%), Square face(23.5%), oval face(12.5%).

• 한국통신학회논문지
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• 제29권12B호
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• pp.1037-1041
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• 2004

본 논문에서 위성신호를 매개로 원격지의 로컬클럭이 기준신호에 동기되는 새로운 개념의 슬레이브를럭 시스템을 제안하였으며 이 방식에 의한 실용화 가능성을 확인하였다. 새로이 제시하는 방식은 단계적인 물리계층에 의해 동기되던 기존의 방식에 비해 모든 슬레이브 국소들이 동일한 계위의 품질로 유지될 수 있는 등의 여러 가지 구조적인 장점을 지니고 있다. 슬레이브클럭 시스템의 측정결과 10-12 수준의 주파수정확도를 유지하였으며 ITU-T의 권고(G.811)를 만족하는 MTIE 특성을 보여주었다. 현재 전체적으로 자동화기능을 갖는 초기모델이 구현되었으며 가까운 시일 내에 상용화연구를 통해 통신망 동기용 노드클릭으로 사용될 수 있으리라 기대한다.

• 대한수학교육학회지:수학교육학연구
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• 제23권1호
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• pp.17-35
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• 2013

본 연구에서는 초 중등 수학교사의 전문성을 신장하기 위해, 문장제 상황을 바탕으로, 정수를 대상으로 하는 나눗셈 알고리즘과 유클리드 알고리즘을 분수(유리수)를 대상으로 하는 나눗셈 알고리즘과 유클리드 알고리즘으로의 확장에 대해 다룬다. 분수 나눗셈의 문장제 상황에 나타난 이산적 환경과 연속적 환경 및 등분제와 포함제에 따라 '나눈다'는 개념을 두 유형으로 분류하였다. 하나는 유리수체에서 현대대수학 관점에서 다루어지는 대수적 개념이며, 다른 하나는 몫과 나머지가 동반된 정수 나눗셈 알고리즘을 유리수 나눗셈 알고리즘으로 일반화하는 개념이다. 후자의 개념을 중심으로 학교수학에서 다루어지거나 다룰 수 있는 문제 상황을 제시하며, 분수를 대상으로 하는 나눗셈 알고리즘, 최대공약수와 최소공배수, 유클리드 알고리즘에 관해 논의한다.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2003년도 춘계학술대회논문집
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• pp.742-748
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• 2003

As for marine propulsion shafting system using 4 stroke diesel engine, it is common to apply reduction gear box between diesel engine and shafting with a view of increasing mechanical efficiency, which inevitably require elastic coupling due to avoid chattering and hammering inside of gear box. In this study, optimum method of rectifying propulsion shafting system in case of 750ton fishing vessel specially in a view of torsional vibration, is theoretically studied. After exchange of diesel engine and gear box, analysis result of torsional vibration get worse and so some countermeasure are needed. The elastic coupling is modified from present block type rubber coupling showing relatively high torsional stiffness to rubber coupling with two series elements directly connected. The vibration measurement using two laser torsion meters was done during sea trial, whose results are compared to those of calculation and verified.

• 패션비즈니스
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• 제25권5호
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• pp.88-98
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• 2021

In this study, the characteristics of digital anthropometric methods were determined with case studies. These methods were broadly classified into two categories: non-wearable and wearable. Then, these categories were further classified into four types: 3D Scanning, mobile app, smart clothing, and smart tool Among the non-wearable types, the "3D scanning" technique was based on the use of 3D hardware equipment. With this technique, the body shape was measured and the internal body information was obtained. Therefore, it is used in fields of healthcare and fitness. Among the wearable types, "Smart clothing" involves a special clothing that measures human body and a smartphone application. Both the components are linked to a fashion platform, which is based on the measured sizes that help shoppers. The "Smart tool" has the characteristic of measuring only with smart tools and smartphone applications; it does not involve the measurement of images. The common advantage of digital anthropometric methods are as follows: they reduce the time and cost of measurement by enabling self-measurement. Moreover, simple measurements are used to determine the size of anthropometry. Thereafter, it accumulates this data to track the continuous changes in size. From an industrial point of view, digital anthropometric technology should be used to increase sales. The on-demand market can be expanded as global consumers would throng the Korean fashion market. For the consumer, an avatar should be created to fit the user's size. This would provide a fun experience to the user.