• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.319-322
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• 2019

실내 환경에서 사용자의 위치를 측위하는 다양한 기법들이 있다. 그중 와이파이 핑거프린트 기법은 데이터 수집 단계와 측위 단계로 구분된다. 데이터 수집 단계에서는 해당 위치 주변의 모든 와이파이 신호를 수집하여 리스트 형태로 관리한다. 수집된 데이터가 많을수록 실내측위 정확도가 향상된다. 기존 고품질 데이터 수집 및 관리 방법은 많은 시간과 비용이 소모되고, 기계학습에 필요한 데이터를 추출해 생성할 때 많은 연산이 필요하다. 따라서 한정된 자원 안에서 많은 데이터를 수집 및 관리할 수 있는 방법을 연구한다. 본 논문은 효율적인 데이터 수집 기법과 기계학습에 필요한 학습 데이터 관리 및 생성 기법을 제안한다.

• Journal of Ecology and Environment
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• 제30권2호
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• pp.201-207
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• 2007

Researchers have used a variety of methods to measure patterns of animal movement, including the use of spatial data (mapping the position of a moving animal at specified intervals) and direct estimation of travel path length by pacing under a moving animal or group. I collected movement data from five groups of siamangs (Symphalangus syndactylus) using two different methods concurrently to estimate the effects of the method of data collection on estimates of daily path length (DPL). Estimates of DPL produced from spatial data collected at 15-minute intervals were 12% lower than estimates of DPL produced by pacing under the traveling animal. The actual magnitude of the difference was correlated with the travel distance, but there was no correlation between the proportional difference and the travel distance. While the collection of spatial data is generally preferable, as spatial data permit additional analyses of patterns of movements in two or three dimensions, the relatively small difference between the DPL's produced using different methods suggests that pacing is an acceptable substitute where the collection of spatial data is impractical. I also subsampled the spatial data at increasing time intervals to assess the effect of sampling interval on the calculation of daily path lengths. Longer sampling intervals produced significantly shorter estimates of travel paths than shorter sampling intervals. These results suggest that spatial data should be collected at short time intervals wherever possible, and that sampling intervals should not exceed 30 minutes. Researchers should be cautious when comparing data generated using different methods.

• 한국문헌정보학회지
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• 제8권
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• pp.233-263
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• 1981

The purpose of this study is to bring out the most reasonable and feasible evaluation methods of research library collection in Korea. At the very outset, writer tried to define the purpose and the necessity of collection evaluation. Writer described a collection evaluation is to gain the data for decision making on selection policy, weeding and storage project, and explained it is one of the procedures of a collection development system operation of being explained as repeated three procedures through a collection development plan, an implimentation of the set plan(selection process) and a collection evaluation. Writer also pointed out the fact many libraries in Korea are apt to by pass or overlook this important process. Writer then defined the criteria of a collection evaluation as the measurement of the proportion of library holding's capability to meet users' demands and that of the degree of total collection's utilization. Writer introduced and analysed seven existing collection evaluation methods and concluded the method by a survey of users' needs and opinion and the method by a circulation survey are the most feasible and reasonable methods that can be applied. Writer also added that using above two evaluation methods together can enhance the effectiveness of collection evaluation.

• 정보보호학회논문지
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• 제28권4호
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• pp.859-868
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• 2018

데이터베이스의 삭제된 데이터 복구와 관련된 그간의 연구는 삭제된 레코드가 트랜잭션 로그에 존재하는 경우이거나 데이터베이스 원본을 물리적 방식으로 수집하여 삭제 데이터의 탐지와 복구를 진행하는 방식이 주를 이루었다. 그러나 트랜잭션 로그가 존재하지 않거나 증거수집 현장에서 물리적 방식의 원본수집이 불가능한 경우 즉, 데이터베이스 서버 정지로 인해 피압수인이 업무상 손실 또는 권리침해를 이유로 거부하는 경우에는 적용하기 곤란한 한계가 있었다. 그러므로 증거수집 현장의 제약을 대비하기 위해 다양한 수집 방식을 살펴보고 이에 따른 삭제된 레코드의 복구 가능성에 대해서 확인해볼 필요가 있다. 이 논문에서는 Microsoft SQL Server 데이터베이스를 대상으로 하는 디지털포렌식 조사 시 원본 수집의 논리적 물리적 방식별로 수집된 원본 파일 내 삭제된 데이터의 잔존 여부를 실험하여 각 수집 방식에 따른 데이터 복구 가능성을 확인하였다.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제25권4호
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• pp.329-341
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• 2022

통계적 문제해결 과정에서 자료 수집은 통계 정보의 질을 결정하는 중요한 절차이지만, 우리나라의 수학과 교육과정에서는 자료 수집이 다소 소홀하게 다루어져 왔다. 이에 본 연구에서는 초등학교 3~4학년 수학 교과서(국정 1종, 검정 10종)의 통계 단원에서 사용되는 자료의 수집 방법은 어떠한지, 그리고 통계 단원을 통해 자료 수집 방법을 어떻게 지도하고 있는지를 분석하였다. 연구 결과, 교과서에서 사용하고 있는 자료들은 설문조사, 실험/관찰, 문헌조사 등 다양한 방법으로 수집된 것들이었으나, 교과서에서 지도하고 있는 자료 수집 방법 중 실험/관찰의 비중은 매우 낮게 나타났다. 또한, 교과서별로 자료 수집 방법 지도 방식이 다르게 나타남으로 인해 학생들이 경험, 학습하게 되는 내용에 차이가 발생할 수 있음을 확인하였다. 이러한 결과를 바탕으로 초등학교 통계교육에서 자료 수집 방법을 효과적으로 지도할 수 있도록 수학과 교육과정 개선 방안을 모색하기 위한 논의점을 도출하였다.

• Wind and Structures
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• 제2권3호
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• pp.133-150
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• 1999

Significant costs to the public and private sectors due to recent extreme wind events have motivated the need for systematic post-hurricane damage data collection and analysis. Current post disaster data are collected by many different interested groups such as government agencies, voluntary disaster relief agencies, representatives of media companies, academicians and companies in the private sector. Each group has an interest in a particular type of data. However, members of each group collect data using different techniques. This disparity in data is not conducive to quantifying damage data and, therefore, inhibits the statistical and spatial description of damage and comparisons of damage among different extreme wind events. The data collection does not allow comparisons of data or results of analyses within a group and also prohibits comparison of damage data and information among different groups. Typically, analyses of data from a given event lead to different conclusion depending upon the definition of damage used by individual investigators and the type of data collected making it difficult for members of groups to compare the results of their analyses with a common language and basis. A formal method of data collection and analysis-within any single group-would allow comparisons to be made among different individuals, hazardous events and eventually among different groups, thus facilitating the management and reduction of damage due to future disaster. This research introduces a definition of damage to single family dwellings, and a common method of data collection and analysis suited for groups interested in regional characterization of damage. The current state-of-data is presented and a method for data collection is recommended based on these existing data collection methods. A fixed-scale damage index is proposed to consider the damage to a dwelling's feature. Finally, the damage index is applied to three dwellings damaged by Hurricane Iniki (1992). The damage index reflects the reduced functionality of a structure as a single family detached dwelling and provides a means to evaluate regional damage due to a single event or to compare damage due to events of different severity. Evaluation of the damage index and the data available support recommendation for future data collection efforts.

• 한국지역사회생활과학회지
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• 제25권4호
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• pp.449-460
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• 2014

This study examines research trends in Korean journal articles covering the role of fathers with young children. For this study, 45 research papers published from 2000 to present were analyzed according to research periods, research topics, research types, data collection methods, and data analysis methods. First, the largest number of papers was written since 2010. Second, the largest number of papers in terms of research topics focused on the father's child-rearing involvement and behavior. Third the most frequently used research type was the quantitative study. Fourth, the most frequently used data collection method was the questionnaire method. Fifth, the most frequently used data analysis method was the frequency and mean method. Future research should consider broader age groups of father and children by using various types of data collection and analysis methods. In addition, it should be useful to scrutinize general research trends in Korean journal articles highlighting the importance of roles of fathers with young children in a rapidly changing society.

• 응용통계연구
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• 제13권2호
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• pp.287-296
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• 2000

데이터 수집과 관리, 그리고 분석을 통한 정보의 제공은 통계학의 기본적 사안이며, 다량의 데이터가 양산되는 현대 사회에서 그 중요성은 더욱 확대되고 있다. 그러나 이러한 분야에 대한 연구는 분석분야에 비하여 상대적으로 많이 이루어지지 못한 것이 사실이다. 본 연구에서는 웹을 활용한 데이터 수집과 관리 방법에 대한 일반적인 사항들에 대해 살펴보고, 데이터를 수집함과 동시에 분석하여 사용자에게 정보를 전달해 줄 수 있는 강의평가 시스템을 사례로 제시한다.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.27-29
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• 2009

Real-time control of on-site construction, based on high quality data, is essential to identify discrepancies between actual and planned performances. Additionally, real-time control enables timely corrective measures to be taken when needed to reduce the damages caused by the discrepancies. The focus of the presentation will be on our work, which uses automated data technologies to collect data needed for real time control.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 A
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• pp.389-391
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• 2001

The existing data systems and structures scope primarily the data evaluation which is performed by only corresponding or Interesting bodies. And the bodies i.e. electricity and energy utilities' quarters don't exchange the data each other because methods, purposes, etc. of the collection are different. This paper presents a new integrated system of data collection, administration and evaluation on the power system. And the system is applied to PSS/E data structures.