• 정보관리학회지
• /
• 제17권2호
• /
• pp.189-205
• /
• 2000

본 연구에서는 현재 웹정보검색의 문제점을 해결하기 위하여 기계학습알고리즘을 이용한 지능형정보검색 시스템을 구현하고 있다. 구체적으로. 수학분야 질의어 및 적합한 문서를 선정해서 이 자료를 토대로 어떻게 귀납학습알고리즘과 신경망을 적용할 수 있는지를 검토하고 있다. 또한, 본 논문에서는 신경망시스템 설계시 성능에 영향을 미치는 입.출력노드수, 은닉층, 학습매개변수등 다양한 요소를 경험적방법을 통해 검토하고 있다.

• 전기학회논문지
• /
• 제58권8호
• /
• pp.1526-1531
• /
• 2009

In this paper, for the first time a new type of narrow-range angle sensor based on inductive effect is introduced and studied. A prototype steering angle sensor is also designed and fabricated to compare the characteristics of the four methods from the viewpoints of sensitivity, linearity and resolution, angle range of the sensor output. This sensor is designed to be sensitive to very small resolution in angle with detected range is scaled down to about 12bit. An intensive investigation has been carried out to study the behaviors of the sensor and optimize its performance by signal compensation. These behaviors are discussed and explained using an analytical and experimental testings. Moreover, Application possibility of the sensor are proposed and a demo device based on the sensor is presented.

• 한국자동차공학회논문집
• /
• 제18권2호
• /
• pp.48-55
• /
• 2010

We have development the steering angle sensor using not only detecting parts but also integrating technique with semiconductors for automobile applications. The performance design and analysis of the steering angle sensor for intelligent vehicles is complicated due to variety of parameters. In this study, the performance characteristics of the angle sensor were analyzed using test rig. By means of magnetic induction technique, these new the steering angle sensors showed excellent magnetic characteristics. The detection range of steering angle sensor obtained was ${\pm}800^{\circ}$, the maximum non-linearity is 0.744% Full Span and the temperature range was $-40^{\circ}C{\sim}+125^{\circ}C$. With this conclusive, the inductive angle sensor was quite satisfactory for many applications in intelligent vehicles.

• 한국초등과학교육학회지:초등과학교육
• /
• 제25권2호
• /
• pp.179-190
• /
• 2006

While most previous studies have developed educational programs for science gifted children and have analyzed the differences between science gifted children and ordinary children using quantitative research methods, few have investigated the differences among the science gifted, especially in terms of the scientific thinking process. The present study was conducted to explore the thinking characteristics of the elementary science gifted according to the three scientific thinking process types during the scientific problem solving process. The study resulted in the collected of quantitative and qualitative data through tests and an interview with questions and scientific problems which required the use of one of the three scientific thinking processes. Ten elementary science gifted children served as interviewees. Two types as an opistemological basis for solving the problems are revealed on inductive thinking problems. Three types are on abductive thinking, and Three or Four types are on deductive. The results are expected to have an influence on the teaching and the evaluation of the elementary science gifted.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2004년도 춘계학술대회
• /
• pp.2088-2093
• /
• 2004

Harmful elements from the exhaust gases are caused by incomplete combustion of mixture inside the engine cylinder and this abnormal combustion like misfire or partial burning is the direct cause of the air pollution and engine performance degradation. In this study, I obtain the shapes of spark, voltage and current generated when changing the experimental parameters such as grounded electrode shapes, electrode gap and the material of center electrodes. After that, I produce ignition energy by using the voltage and current and classify ignition energy into capacitive discharge energy and inductive discharge energy.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2003년도 추계학술대회 논문집 전력기술부문
• /
• pp.154-157
• /
• 2003

The exicting short circuit analysis calculate the current with the balance system and unbalance fault impedance. That method deal with only bus fault with the consequence that line fault study is irrational. This paper propose the line fault, shunt unbalance and series unbalance analysis method using template concept that is one of advantages for OOP(Object-Oriented Programming). This method is possible to use for calculating inductive distrubance.

• 전력전자학회논문지
• /
• 제25권6호
• /
• pp.477-483
• /
• 2020

This study proposes a DQ synchronous reference frame model of a series-parallel tuned inductive power transfer (SP-IPT) system. The wireless power transmission system experiences control difficulty because the transmitter-side controller cannot directly measure the receiver-side load voltages and currents. Therefore, a control-oriented circuit model that shows the dynamics of the IPT system is required to achieve a well-behaved controller. In this study, an equivalent circuit model of the SP-IPT system in a synchronously rotating reference frame is proposed using the single-phase DQ transformation technique. The proposed circuit model is helpful in modeling the dynamics of the voltages and currents of the transmitter- and receiver-side resonant tanks and loads. The proposed circuit model is evaluated using frequency- and time-domain simulation results.

• 한국자기학회:학술대회 개요집
• /
• 한국자기학회 1994년도 추계연구발표회 논문개요집
• /
• pp.80-81
• /
• 1994

• 대한용접접합학회:학술대회논문집
• /
• 대한용접접합학회 2001년도 추계학술발표대회 개요집
• /
• pp.260-262
• /
• 2001

• 한국융합학회논문지
• /
• 제9권8호
• /
• pp.247-264
• /
• 2018

본 연구의 목적은 대학운동선수들을 대상으로 자기관리 구성개념을 개방형 질문지와 포커스 그룹 인터뷰(Focus Group Interview)의 두 가지 통합연구방법을 통하여 규명하고자 하였다. 자료 수집은 서울 경기 소재 대학에 재학 중인 운동선수 157명을 대상으로 개방형 질문지를 실시하였으며 또한 대학운동선수 14명을 대상으로 포커스 그룹 인터뷰를 실시하여 자료를 수집하였다. 이에 일련의 연구절차를 통하여 도출된 결과는 다음과 같다. 첫째, 개방형 질문지의 귀납적 내용분석 결과 대학운동선수들의 자기관리는 생활관리, 훈련관리, 시합관리, 정서관리, 학업관리, 대인관리, 목표(동기)관리, 장비관리로 8가지 일반영역이 도출되었다. 둘째, 포커스 그룹 인터뷰 결과에서는 귀납적 내용분석을 보다 타당성 있게 지지하고, 스포츠 현장 중심적인 면담 사례들이 심도 있게 도출되었다. 본 연구의 결과들은 대학운동선수의 성공적인 선수생활을 위한 전략 수립과 대학운동선수들의 자기관리 측정도구 개발에 기초자료로서 활용될 수 있을 것이다.