• Journal of the Korean Society for information Management
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• v.18 no.3
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• pp.239-264
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• 2001

The aim of this study is to compare and analyse the evaluation or performance indicators for academic libraries suggested at domestic and foreign. For the study, evaluation indicators of the various evaluation models(IFLA, ISO, ALA/ACRL, LA, HEFCE, CERLIM, JUAA, UNICOOP. KLA) was analysized. Evaluation or performance indicators should shed light on inputs and outputs of resource, levels of demand and satisfaction, the library effectiveness, and operating efficiency. There is a great deal of work going on at present, but as yet there is no greed set of indicators that can be across all academic libraries. Therefore, new evaluation indicators for physical and electronic libraries should be developed.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.15 no.5
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• pp.69-74
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• 2015

In this paper the patterns of information system is reduced so that control rules can guarantee fast response of queries in database. Generally an information system includes many kinds of necessary and unnecessary attribute. In particular, inconsistent information system is less likely to acquire the accuracy of response. Hence we are interested in the simple and understandable rules that can represent useful patterns by means of rough entropy and Bayesian posterior probability. We propose an algorithm which can reduce control rules to a minimum without inadequate patterns such that the implication between condition attributes and decision attributes is measured through the framework of rough entropy. Subsequently the validation of the proposed algorithm is showed through test information system of new employees appointment.

• Journal of Korea Society of Industrial Information Systems
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• v.5 no.3
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• pp.10-17
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• 2000

This paper focuses m the measurement of increased work efficiency and competitive advantage expected from the implementation of information systems through random interactions of the organizational behavioral factors whose attributes can be changed with. Specifically, the work reported here is concerned with modeling and analyzing the interrelationships among the organizational behavioral factors which a university information system can have impact on throughout the time horizon of its implementation in terms of productivity. In addition, it is also concerned with developing a continuous simulation model to be used to assess the impact of the information system.

• Korean Journal of Culture and Social Issue
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• v.28 no.2
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• pp.187-217
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• 2022

The aim of this study is to examine the psychometric properties of the Korean version of the Post-traumatic Stress Disorder Checklist for DSM-5(PCL-5). For this purpose, online surveys were conducted for two times with a one year interval using the data from 1,077 Korean adults at time 1, and 563 Korean adults at time 2. First, from the result of the confirmatory factor analysis, comparing the model fit of the 1, 4, 6, and 7-factor model, the 4, 6, and 7-factor model showed a acceptable fit, and the best fit was seen in the order of the 7, 6, 4-factor model. Second, the internal consistency, omega coefficient, construct validity, average variance extracted, and test-retest reliability results were all satisfactory.. Third, a correlation analysis with the K-PC-PTSD-5 and the sub-factors of BSI-18 was conducted to check the validity of the Korean Version of PCL-5. As a result, a positive correlation was seen with both K-PC-PTSD-5 and BSI-18. Fourth, a hierarchical multiple regression was performed to examine whether the Korean Version of PCL-5 predicts future PTSD, depression, anxiety, and somatization. As a result, the Korean Version of PCL-5 measured at time 1 significantly predicted PTSD, depression, anxiety, and somatization symptoms at time 2. Fifth, by analyzing the ROC curve, the discriminant power of PCL-5 for screening PTSD symptom groups was confirmed, and the best cut-off score was suggested. As a result of the longitudinal validation of Korean version of PCL-5, it was found that this scale is a reliable and valid measure for Korean adults. By looking into the predictive validity of the scale, it was found that the Korean version of PCL-5 can predict not only PTSD symptoms but also PTSD-related symptoms such as depression, anxiety, and somatization. Also, this study differs from previous validation studies measuring PTSD symptoms in that it suggested a cut-off score to help differentiate PTSD symptom groups.

• Journal of the Korean Society of Radiology
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• v.13 no.2
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• pp.209-216
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• 2019

The purpose of this study was to suggest the optimum ambient illumination level for proper visualization in image inspection and reading on CRT and LCD monitors used for ultrasound and reading. The evaluators were divided into 4 groups: 20 (Ultra-sonographer: 20 groups (4 groups: ultra-sonographer, 1-5 years, 5 ultra-sonographers, 6 to 10 years, 5 ultra-sonographers, 11 to 15 years, The subjects were 32 questions. The evaluation method was image evaluation of ultrasonic soft copy images for 30 seconds per 10, 25, 100Lux ambient illumination. The evaluation results were evaluated as 6 points (Normal = Definitely no lesion), 2 points = possibly not a lesion, 3 points = probably not a lesion, 4 points = possibly a lesion, 5 points = probably a lesion, 6 points = Definitely a lesion). In this study, the results of ROC analysis according to ambient light illumination reading softcopy images used for lesion detection of all ultrasound images showed the highest sensitivity, specificity, and AUC results at 10Lux. It was found that optimal use of 10Lux for ambient light illumination would provide optimal detection of lesions in ultrasound soft copy images. Based on the future research data, it will be presented as basic data for designing ambient light brightness of ultrasound imaging laboratory and reading room.

• Journal of Digital Convergence
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• v.19 no.1
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• pp.167-176
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• 2021

Incheon Port urgently requires designation of a free trade zone to pursue development linked with the port hinterland while promoting continuous growth of the port. This study aims to evaluate the optimal location and derive policy implications for the designation of a free trade zone and analyzed factors property divided by groups. This study used the Consistent Fuzzy Preference Relation (CFPR) analysis technique to derive a practical construction direction by quantifying and evaluating linguistic measures. As a result, the Incheon New Port hinterland showed the highest location competitiveness among the four candidate areas of Incheon New Port hinterland, Aam Logistics Complex 2, North Port hinterland, and Gyeongin Port hinterland. Among the eight evaluation factors consisting of qualitative and quantitative factors, the Incheon New Port hinterland ranked no. 1 in all the four qualitative factors and one quantitative factor and received the highest total score. Also, Group 1 presented 'possibility to attract tenant companies' as first. Group 2 was 'complex size' and Group 3 was also 'possibility to attract tenant companies'. This study has the implication for suggesting the factors and evaluation structure of Free Trade Zone. Future research requires detailed empirical studies, such as expanding the subject of study or selecting factors that reflect the interests of each group.

• Broadcasting and Media Magazine
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• v.16 no.4
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• pp.31-45
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• 2011

사용자가 원하는 3D 사운드 혹은 소리의 공간감을 원하는 대로 재현할 수 있는 오디오 시스템은 오랜 기간 동안 인류가 가지고 싶었던 꿈의 기계였다. 그러나 과연 개인 혹은 사용자가 원하는 3D 사운드라는 것이 무엇이며 어떻게 정의하여야 하는지는 명확하지 않다. 이것은 매우 주관적인 개념일 뿐만 아니라 개인에 따라 다를 수 있으며, 그 평가에 대한 객관적인 방법 또한 존재하지 않는다. 관련된 연구를 살펴보면, 원하는 소리의 파동 전파 자체를 시공간 상에서 물리적으로 재현하는 WFS(Wave Field Synthesis)나 Ambisonics, 또는 머리전달함수(HRTF: Head Related Transfer Function)를 기반으로 한 많은 연구들이 있다. 이렇게 재현된 음장(sound field)을 보면 이들이 인지되고 평가되는 등의 객관화를 위하여는 청취 환경에 따라 그 특성이 바뀌고 동일한 환경에서도 청취자에 따라 다르게 인지되는 근본적인 문제점을 가지고 있다. 음장 재현 방법의 이러한 근본적인 문제는 놀랍게도 과거의 스테레오 시스템에서 볼 수 있는 밸런스 노브(balance knob)로부터 그 해결의 실마리를 찾을 수 있다. 밸런스 노브는 보편적인 최적의 소리를 찾는 대신에 청취자가 원하는 음향 효과를 얻을 때까지 직접적으로 소리를 청취하고, 스스로 조절하여 평가할 수 있는 매개체의 역할을 수행한다. 만일 밸런스 노브와 같이 청취자가 원하는 3D 사운드를 스스로 평가하고 조절하기 위한 방법을 마련할 수 있다면? 즉, 청취자가 시공간적으로 원하는 3D 사운드를 실시간으로 청취하고 변화시킬 수 있는 인터페이스를 구현할 수 있다면? 과연 그러한 것이 어떻게 가능할 수 있는지 체계적인 검토가 이루어질 수 있다면 매우 좋을 것이다. 본 고는 이러한 것을 가능케 할 수 있는 즉, 청취자가 자유 자재로 원하는 음장을 형성할 수 있는 렌더링 기법 및 즉각적인 피드백이 가능한 인터페이스를 소개하고 있다. 인터페이스는 현재까지 오디오 시스템에서 주로 사용되는 주파수 이퀄라이져(frequency equalizer)와 매우 유사한 특징이 있다. 이러한 점을 감안하여 "Spatial Equalizer$^{(R)}$"라는 이름을 붙여 보았다. Spatial Equalizer$^{(R)}$는 공간 상에 하나의 점 또는 다수의 점으로 표시되는 가상 음원을 사용자가 조종하여 원 소리의 공간감을 제어할 수 있도록 구성되어 있다. 공간 상에 다수의 점 음원들의 위치를 변화시키거나 크기를 변화시킴으로써 청취자가 원하는 공간감을 구현할 수 있도록 하고 있다. 중요한 것은 종전의 이퀄라이져와 같이 Spatial Equalizer$^{(R)}$에 의해 형성되는 음장이 어떤 객관적인 척도에 의해서 평가되는 대신 사용자에 의해 직접 주관적으로 평가되고, 선택된다는 점이다.

• KSBB Journal
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• v.22 no.6
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• pp.443-446
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• 2007

A prognostic indicator of coronary heart disease, C-reactive protein, was tried to be determined by a batch-type quartz crystal microbalance immunosensor. The sensor was operated by direct-binding mode and the optimum concentration for the corresponding antibody for immobilization was $50{\mu}g/ml$. The reaction buffer for the system was 0.1 M sodium phosphate (pH 7.0) and system operation was performed in the order of baseline stabilization, analyte addition and measurement, and regeneration of the sensor chip with 10 mM NaOH. When plotted in double-logarithmic scale, the sensor showed a linear detection range of 0.27-106.00 nM for rat C-reactive protein with the limit of detection of 0.53 nM. It also showed a good reusability.

• Journal of the Korean Society of Floral Art and Design
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• no.42
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• pp.23-35
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• 2020

Standard carnations are widely used in flower design as a mass flower, but there is a limit to the use in that it can not be used in various colors in addition to its own color. The purpose of this study was to investigate how does artificial dyes affect vase life, using standard carnations, and to improve utilization of dyeing carnations in floral design. Using standard carnation 'White Liberty', dyeing experiment was performed according to four kinds of chemicals for each of six dyes. Six different dyes from Koch(Robert Koch industries Inc., USA) as follows light blue(2386), lime green(2315), christmas red(2506), lavender(2200), orange fire(2268) and black(2012) have been used and four different chemicals as follows distilled water, 4% ethanol, 3% sucrose and 100mg·L^-1 citric acid have been used with the cut Dianthus caryophyllus 'White Liberty'. As a result, six different dyes showed fast and excellent dyeing with 3% sucrose and 100mg·L^-1 citric acid treatment. But vase life in other dyes except black and lavender tended to be similar to control(7 days).

• Korean Journal of Health Psychology
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• v.14 no.3
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• pp.579-596
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• 2009

This study aimed to develop the Korean tool of competency to consent to psychiatric treatment and to analyze the reliability and validity of this tool. Also the developed tool's efficiency in determining whether a patient possesses treatment consent competence was checked using the Receiver Operating Characteristic curve and the relevant indices. A total of 193 patients with mental illness, who were hospitalized in a mental hospital or were in community mental health center, participated in this study. We administered a questionnaire consisting of 14 questions concerning understanding, appreciation, reasoning ability, and expression of a choice to the subjects. To investigate the validity of the tool, we conducted the K-MMSE, insight test, estimated IQ, and BPRS. The tool's reliability and usefulness were examined via Cronbach's alpha, ICC, and ROC analysis, and criterion related validation was performed. This tool showed that internal consistency and agreement between raters was relatively high(ICC .80~.98, Cronbach's alpha .56~.83)and the confirmatory factor analysis for constructive validation showed that the tool was valid. Also, estimated IQ, and MMSE were significantly correlated to understanding, appreciation, expression of a choice, and reasoning ability. However, the BPRS did not show significant correlation with any subcompetences. In ROC analysis, full scale cutoff score 18.5 was suggested. Subscale cutoff scores were understanding 4.5, appreciation 8.5, reasoning ability 3.5, and expression of a choice 0.5. These results suggest that this assessment tool is reliable, valid and efficient diagnostically. Finally, limitations and implications of this study were discussed.