• Journal of Elementary Mathematics Education in Korea
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• v.18 no.1
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• pp.37-62
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• 2014

In this thesis, we inquire into teaching method of decimal fraction concept in elementary mathematics education based on measurement activity. For this purpose, our research tasks are as follows: First, we design a experimental learning-teaching plan of 'decimal fraction' unit in 4th grade textbook and verify its effect. Second, after teaching experiment using experimental learning-teaching plan, we analyze the student's status of understanding about decimal fraction concept. As stated above, we have performed teaching experiment which is ruled by new lesson design and analysed the effects of teaching experiment. Through this study, we obtained the following results. First, introduction of decimal fraction based on measurement activity promotes student's understanding of measuring number and decimal notation. Second, operator concept of decimal fraction is widely used in daily life. Its usage is suitable for elementary mathematics education within the decimal notation system. Third, a teaching method of times concepts using place value expansion of decimal fraction is more meaningful and has less possibility of misunderstanding than mechanical shift of decimal point. Fourth, teaching decimal fraction through the decimal expansion helps students with understanding of digit 0 contained in decimal fraction, comparing of size and place value. Fifth, students have difficulties in understanding conversion process of decimal fraction into decimal notation system using measurement activity. It can be done easily when fraction is used. However, that is breach to curriculum. It is necessary to succeed research for this.

• Proceedings of the Korea Information Processing Society Conference
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• 2005.11a
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• pp.289-292
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• 2005

체계적이고 지속적인 소프트웨어 개발 프로세스 측정 및 분석 활동은 프로젝트 관리에 있어서 중요한 요소 중의 하나로 알려져 있다. 하지만 측정 및 분석 활동에 요구되는 높은 비용과 신뢰성 있는 메트릭 데이터 획득의 어려움으로 인해 측정 및 분석 활동을 수행하는 데에는 많은 어려움이 존재한다. 본 논문에서는 메트릭 자동 수집 및 분석 도구와 이 도구를 기반하여 소프트웨어 프로젝트 관련 문제 인식과 문제 해결을 할 수 있게 하는 방법을 제안한다. 도구와 방법을 통해 메트릭 수집에 대한 오버헤드를 없애 측정 및 분석 활동의 수행을 쉽게 할 수 있고 수집된 메트릭의 분석을 통해 객관적으로 이슈를 파악하고 해결 할 수 있다. 또한 프로젝트 중에 메트릭의 지속적인 수집이 가능하고 수집과 동시에 수집된 메트릭에 대한 분석을 할 수 있기 때문에 잠재적인 위험 요소의 조기 식별과 해결을 가능케 하여 소프트웨어 제품의 품질향상과 문제해결에 드는 비용의 절감 효과를 얻을 수 있다.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1993.04a
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• pp.169-169
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• 1993

동물의 일반활동은 중추신경계에 작용하는 약물에 관한 많은 정보를 제공한다. 따라서 약물의 중추신경계에 대한 독성평가는 물론이고 중추신경계 작용약물의 검색에도 널리 이용된다. 본 연구에서는 여러 가지 기전으로 중추신경계에 작용하는 약물들의 일반활동을 분석하여 중추신경계 작용 약물들의 작용기전에 따르는 일반활동의 특성을 비교 분석하고자 하였다. 실험장치는 UGO BASILE제 활동측정 장치를 이용하였으며, 실험동물은 서울대학교 의과대학 실험동물 사육장에서 사육한 ICR mouse를 사용하였다. 동물의 활동측정은 환경요인을 최소한으로 배제하기 위하여 매일 9:00-11:00 까지 2시간 동안의 행동을 10분 간격으로 측정 기록토록 하였다. 중추신경 흥분제 amphetamine, 진정수면제 phenobarbital, 항불안제 diazepam, 항정신병약 chlorpromazine, 항우울제 haloperidol는 모두 용량 의존적으로 동물의 자발운동에 영향을 미쳤다. 특기할 것은 항불안제 diazepam 은 용량의존적으로 운동 억제를 나타내었으나 진정수면제 phenobarbital의 경우는 용량 의존전 운동억제를 나타내기 이전에 초기약물 유발성 aggressive behavior를 나타내었다. 본 실험결과는 동물의 자발행동의 분석으로 중추신경계 작용약물의 작용기전 규명 및 이에 따르는 약물의 분류 방법으로 유용하게 이용될 수 있을 것으로 생각된다.

• Korean Chemical Engineering Research
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• v.50 no.1
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• pp.93-105
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• 2012

Activity coefficients and solubilities of L-Valine and L-Proline in aqueous solutions containing each of four electrolytes such as NaCl, KCl, $NaNO_3$ and $KNO_3$ were measured at 298.15 K. The measurements of activity coefficients were carried out in the electrochemical cell coupled with two ion-selective electrodes (cation and anion), and the solubilities were measured by the gravimetric analysis of saturated solutions in equilibrium with the solid phase of amino acid. The measured activity coefficients of electrolytes and amino acids were correlated with the theoretical thermodynamic model presented in the previous work [Korean Chem. Eng. Res. 48(4), 519(2010)]. It was found that the activity coefficients of amino acids and electrolytes described based on the our previous model were well agreeable with experimental data. Also the experimental solubility data of L-Valine and L-Proline were successfully correlated with the thermodynamic relation mentioned in the previous work.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.05a
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• pp.429-432
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• 2008

의료서비스 분야에서 유비궈터스 IT 기술과 헬스케어 기술을 접목함으로써 일상생활 중 지속적으로 건강상태를 모니터링하여 항상 건강한 상태의 유지가 가능하도록 하는 유비쿼터스 헬스케어기술이 급부상하고 있다. 본 연구에서는 유비쿼터스 헬스케어와 관련하여 일상생활 중 활동 상태에 따른 가속도 변화를 측정하여 활동 상태를 판단하고 활동량을 정량화하기 위한 지표를 개발하고자 하였다. 먼저 활동상태에 따른 가속도 정보를 측정하기 위해 단일침의 3축가속도 센서를 사용하였으며, 아날로그 가속도신호를 디지털로 변환하고 데이터의 무선전송을 위해 무선센서네트워크 기술을 적용한 센서노드를 활용하였다. 그리고 무선으로 전송된 가속도 신호를 PC또는 휴대형 단말기에서 모니터링하기 위해 모니터링 프로그램을 구현하였다. 계측된 가속도 신호로부터 활동상태의 분류 및 활동량의 정량화를 위한 방법을 제시하고 그 타당성을 평가하였다.

• Korea journal of population studies
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• v.34 no.2
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• pp.163-190
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• 2011

This study assessed the manner in which social activities, religious experiences, and spiritual practices related to depression and life satisfaction among 217 Korean elderly individuals, aged 65 to 80. The Social Activities Scale and Brief Multidimensional Measure of Religiosity/Spirituality were employed to assess social activities and six domains of religiosity/spirituality: daily spiritual experiences, values, forgiveness, private religious practice, religious/spiritual coping, and religious support. In addition, depression was assessed with the Geriatric Depression Scale, and life satisfaction with the Satisfaction with Life Scale. After controlling for demographic variables, lower depression scores were predicted by higher levels of religious and spiritual coping, social activities, higher income, and ower daily spiritual experiences. In addition, identifying as female, advanced old age, and lower social activities predicted lower life satisfaction in this study. The implications of this study's findings on social work practice are also discussed, along with some future research directions.

• Proceedings of the KAIS Fall Conference
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• 2011.12a
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• pp.62-66
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• 2011

TPM 활동은 도입준비 단계의 활동으로 TPM의 기본 방침 및 목표의 설정과 이를 달성하기 위한 TPM 활동성과를 측정하는 지표를 통한 성과의 정량화 등이 필요하다. 본 연구에서는 선행 연구 결과를 통해 TPM 활동의 측정 요소를 분석하고, BSC 기반의 TPM 성과 측정 방법과 정성적 성과의 정량화를 통한 지표의 경제적 효과 측정 방법을 제시하였다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.12 no.5
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• pp.930-936
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• 2008

CMOS image monitoring system for optimal measuring the activity of biosensor is developed using genetic algorithm. Most of living organism in water as water flea, fish, etc are frequently used as biological sensor for monitoring the water quality. It is very difficult to measure the activity of biosensor by image sensor because the value of measurement is varied with gathering method of biosensor images. The suggested monitoring system can optimally measures the activity of biosensor by genetic algorithm. The system is implemented with FPGA into the small hardware which is excellent in terms of the price and performance.

• Therapeutic Science for Rehabilitation
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• v.5 no.2
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• pp.57-69
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• 2016

Objective: The purpose of this study was to systematically review the articles using accelerometer to measure activity of daily living of patients with stroke. Methods: Depending on selection criteria, 13 studies were searched for PubMed, EMBASE, and Cochrane library database from February 2014 to March 2014. A total of 331 papers were searched, and 13 of these were selected. Results: In studies of 13 selected, acute, subacute, and chronic patients with stroke were enrolled. The kind of accelerometer was uniaxial, biaxial, and triaxial, activity monitor. Measurement activities were mainly arm activity, walking activity, and attachment sites were also various depending on the measurement activities. A measured variable was the total number of activities, the movement speed of the patients, ratio between affected and non-affected, and motion analysis. The result indicated that significant correlation with the other assessment tools in all studies. Conclusions: Accelerometer will be applied with a tool for measuring activity of daily living of patients with stroke, depending on activities characteristics. Further, we need accelerometer studies to apply with a variety of assessment in clinical practice or community settings.

• Journal of Science Education
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• v.47 no.3
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• pp.273-285
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• 2023

Measurement in elementary school mathematics is one of the mathematical concepts that is directly used in real life. This study is based on the fact that mathematics textbooks for 3-4 and 5-6 graders were developed as the government designed and authorized textbooks and the general measurement instruction process is condensed and presented considering the limitation of the textbook's space for the capacity and weight. Its contents were analyzed. The results are as follows. The contents of authorized textbooks and government designed textbook are different in detail but similar overall in comparative activities, recognition, and situation of the need for the introduction of standard unit and estimation activities. Through this, it is proposed that efforts are needed to reform national textbook policies and develop textbooks that can highlight the meaning of each measurement activity and focus on students' activities.