• Title/Summary/Keyword: Evaluation of Collection

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A Study on the Collection Development Policy for Science and Technology (과학기술분야 정보자원개발정책에 관한 연구)

  • Chang, Durk-Hyun
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.18 no.2
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    • pp.107-124
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    • 2007
  • Collection development policies(CDP) are becoming increasingly important to libraries of all types and sizes. The paper addresses the elements to develop a collection development policy to guide the librarians for the science and technology information resources. Instead of focusing on how well a given item fits into or supports the collection, the policy gives general guidance on the selection of information resources. The general collection development guidelines for the information resources include relevance and potential use of the information, demand for the information, ease of use of the product, subject and magnitudes, stability of the coverage of the resource, longevity of the information and evaluation mechanism.

Design and Performance Evaluation using Computational Fluid Dynamics (CFD) Analysis of Wetcyclones for the Collection of Airborne Bacteria (공기 중 박테리아 포집을 위한 습식 사이클론의 CFD 해석을 이용한 설계 및 성능 평가)

  • Hyun Sik Ko;Jungwoo Park;Jiwoo Jung;Jungho Hwang
    • Particle and aerosol research
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    • v.19 no.3
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    • pp.77-87
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    • 2023
  • We present the development of a wetcyclone sampler designed for the sampling of airborne bacteria. The wetcyclone design involves a combination of two traditional cyclone shapes and computational fluid dynamics (CFD) analysis to validate its effectiveness in terms of pressure drop and collection efficiency. The wetcyclone exhibits a collection efficiency of over 90% for bacteria, specifically targeting Staphylococcus aureus. Additionally, the wetcyclone enables continuous bioaerosol sampling using a liquid medium (deionized water), demonstrating a concentration ratio exceeding >105 and a stable microbial recovery rate of 81.9%. The application of real-time quantitative polymerase chain reaction (qPCR) and the colony counting method ensures precise measurement of the concentration ratio and microbial recovery rate.

A Study of Development of the School Library Evaluation Criteria (학교도서관 평가지표 개발 연구)

  • Kwak, Chul-Wan;Noh, Young-Hee
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.20 no.2
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    • pp.183-196
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    • 2009
  • The purpose of this study is to develop school library evaluation criteria by individual provincial office of education. Data was collected from several school library evaluation criteria. Based upon the data new evaluation criteria were developed in order to increase student academic achievement and apply various school environment. Evaluation items were divided into three items: library programs, school support, service. Evaluation methods were identified into survey method, statistics method, and applied standard statistics method. From three methods, applied standard statistics method was selected. This method included quantitative items and qualitative items. Quantitative items have two criteria from budget, three criteria from collection, and three criteria from use. Qualitative items have two criteria: collection and book usage.

Evaluation of the Dynamic Characteristics of the Current Collection System

  • Kim Jung Soo;Koh Byung Shik
    • International Journal of Safety
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    • v.3 no.1
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    • pp.10-14
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    • 2004
  • Apar The dynamic characteristics of the current collection system are evaluated during a test run. Signals from accelerometers attached to the pantograph assembly are acquired through a measurement system and analyzed. It is found that the train speed significantly influences the magnitude and frequency characteristics of the pantograph motion. The major frequency components of interest are found to be frequency components originating from the motion of the train along the catenary as well as the several resonance frequencies of the structural vibration of the pantograph. The contact force is also calculated by assuming the pantograph panhead as a rigid structure.

A Study on the Modern Reinterpretation of Galliano to the works of Dior (디오르 작품에 대한 갈리아노의 현대적 재해석에 관한 연구)

  • 구미지
    • Journal of the Korean Society of Costume
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    • v.51 no.8
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    • pp.43-49
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    • 2001
  • Galliano's works showed at Dior Collection in 1997 which was held for the 50th anniversary of New Look got a good evaluation in the sense of expressing the modern taste as well as reflecting the spirit of Dior. The purpose of this study is focused on observing how to adapt the Dior's spirit. to Galliano's own design and what is the factor to let us feel his works modern. Galliano's fifty works in that Collection are analyzed by content analysis. The result is as followed : Galliano created his fabulous and modern works by four ways such as using various ethnic details, new way of fabric usage, new construction. and differentiated color harmony from Dior's. This result also includes the methodological model to adapt to design process.

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Analysis Model Evaluation based on IoT Data and Machine Learning Algorithm for Prediction of Acer Mono Sap Liquid Water

  • Lee, Han Sung;Jung, Se Hoon
    • Journal of Korea Multimedia Society
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    • v.23 no.10
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    • pp.1286-1295
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    • 2020
  • It has been increasingly difficult to predict the amounts of Acer mono sap to be collected due to droughts and cold waves caused by recent climate changes with few studies conducted on the prediction of its collection volume. This study thus set out to propose a Big Data prediction system based on meteorological information for the collection of Acer mono sap. The proposed system would analyze collected data and provide managers with a statistical chart of prediction values regarding climate factors to affect the amounts of Acer mono sap to be collected, thus enabling efficient work. It was designed based on Hadoop for data collection, treatment and analysis. The study also analyzed and proposed an optimal prediction model for climate conditions to influence the volume of Acer mono sap to be collected by applying a multiple regression analysis model based on Hadoop and Mahout.

A Study on the Performance Characteristics of Image Vehicle Detectors Depending on the Environment (환경에 따른 영상식 차량검지기의 성능 특성에 관한 연구)

  • Oh, Ju-Sam;Kim, Jin-Woo
    • The Journal of the Korea Contents Association
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    • v.21 no.1
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    • pp.119-128
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    • 2021
  • The most typical method to generate traffic information is installing vehicle detectors and collecting various traffic variables. The information collection accuracy of a vehicle detector affects the reliability of the generated traffic information. The most universal vehicle detector is an image detector. This study installed a magnetic detector in the same position as an image detector and evaluated the accuracy of traffic volume and speed data depending on a variety of environment. Based on the evaluation, more errors occurred as the image detector was placed farther from the camera, whereas more errors were found to occur during the night rather than the day. Although rainfall did not affect the collection of traffic volume, it negatively affected speed data collection. Therefore, an analysis of the camera's view angle and its optimization depending on the camera installation position and height are required to enhance the currently operated image detector performance. It is judged that a separate performance evaluation criterion should be prepared in a bad weather environment.

Requirements Derivation and Implementation of Agent-based SPC System by Task Analysis (활동 분석을 통한 에이전트 SPC의 요구사항 규명 및 시스템 구현)

  • Yoo, Ki-Hoon;Lee, Jae-Hoon;Kim, Ki-Tae;Jang, Joong-Soon
    • Journal of Applied Reliability
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    • v.10 no.1
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    • pp.39-56
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    • 2010
  • Statistical process control (SPC) is a powerful technique for monitoring, managing, analysing and improving the process performance. However, its has limitations such as lack of engineering, statistical skill and training, and lesser importance of activity. To solve the problems, this study proposes an intelligent SPC system using specified agents which are derived through analysis and evaluation of the SPC activities. The activities investigated by the relevant researches are categorized as collection, process analysis, diagnosis, detection, cause analysis and rule generation. Also, the evaluation criteria are established as feasibility of automation, frequency, level and time. The requirements of the agent functions are derived by the evaluation, and the types of customized agents are as data collection, store, analysis, diagnosis, monitoring, alarm and reporting. A prototype SPC system represents that the functions of the proposed agents are successfully validated.

A Study on Implementation of Printed Character Recognition System And Performance Evaluation (인쇄체 문자 인식기의 성능 평가에 관한 연구)

  • Kim, Min-Soo;Kang, Eun-Young;Kim, Eun-Young;Han, Sun-Hwa;Kim, Jin-Hyung
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.11
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    • pp.3584-3591
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    • 2000
  • In this paper we propose measure for performance evaluationof character recognition, We used three commercial character recognizers and one laboratory character recognizer for test. The characteristics of each recognizer is compared by proposed evaluation standrd, and analyzed characteristrics For the input test data, KT test collection are used. KT test collection is composed of 1000 document images about and complete source text. In this paper we propose method for measuring recognition rage in character unit for evaluation of character recogrition, The recogrition rates are compared and analyzed by single feature characteristic or mixed feature characteristic.

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Evaluation of Impactor's Collection Efficiency on Airborne Bacteria by Type of Agar Media and Storage Condition (배지 종류 및 저장 조건에 따른 impactor의 부유세균 시료 채취 효율 평가)

  • Kim, Ki-Youn;Jang, Gyu-Yeob;Park, Jae-Beom;Kim, Chi-Nyon;Lee, Kyung-Jong
    • Journal of Environmental Health Sciences
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    • v.33 no.2 s.95
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    • pp.145-149
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    • 2007
  • The range of reduction rates of airborne bacteria concentration at 6 hrs, 12 hrs, 24 hrs and 48 hrs, which means a storage time until input of agar media into incubator after air sampling with an impactor. were 15-20%, 25-40%, 35-50% and 55-70%, respectively, compared to initial concentration. Types of agar media and storage thermal condition did not significantly affect a collection efficiency of impactor in terms of evaluating airborne bacteria level (p>0.05). To better improve the impactor's collection efficiency of airborne bacteria, based on the result of this study, it is recommended that the vicinity of $25^{\circ}C$ should be sustained until input of agar media into incubator after air sampling.