• Korean Journal of Social Welfare
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• v.56 no.4
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• pp.149-172
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• 2004

The main purpose of this study is to explore and understand the reality of culture of poverty that employees of emergent relief facilities recognize. For this purpose, it had been carried out questionnaire with employees of emergent relief facilities from November to December 2003. It was applied quantitative research method to this study. Major findings of the study are as follows: 1) the awareness of employees to facilities in which they work is positive, 2) but their awareness to service user is negative(the degree of individual characteristic, educational characteristic and economical characteristic of service user is generally negative, while the degree of familial characteristic is generally positive), 3) the awareness to relationship with service user is positive. The results of this study reveal possibility that the culture of poverty can be expanded under the poor and psychic rehabilitation programs should be reinforced.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.05a
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• pp.248-251
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• 2016

This thesis has discussed how to recognize and convert raised letters on tire to data and collect such data. Unlike the existing recognition system, the system presented by this thesis recognizes raised letters on tire through detecting letters after converting the Kinect camera image into image data in the preprocessing stage. After then, numbers and letters are analyzed through image improvement by use of binary images, noise filter, etc. In the recognition stage, letter distinction is used and raised letters on tire are recognized 100% through correction of errors by way of the correction algorithm for tire data recognition errors. In this paper it will be the development of a method of recognizing characters and the tire technology. Although there are many ways to the already recognized characters, Tire characters requires a technique different from the more general character recognition. For this reason and to develop additional technical methods and algorithms for character recognition.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.27-39
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• 2017

To grasp the current status of smart campus and look for future directions, this study investigated the usage rate and perceived usefulness of digital devices and services by conducting online survey of 580 university students. The main results are as follows. First, smartphones have the highest ownership rate, followed by laptops, desktops, and digital cameras. Purchase intention of virtual reality devices is highest followed by smart watches/bands, and tablets. Second, mobilization in campus life is almost realized, however the usage of desktops is still high in education and administration context. Digital devices have been perceived particularly useful when searching and sharing information. Third, students use digital services such as search engines, messengers, and online libraries in their learning, and they use messengers, music and video services in their lives. Service usage rate and perceived usefulness are not proportional.

• Journal of Navigation and Port Research
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• v.39 no.4
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• pp.307-312
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• 2015

ARPA(Automatic Radar Plotting Aid) is a device to calculate CPA(closest point of approach)/TCPA(time of CPA), true course and speed of targets by vector operation of relative courses and speeds. The purpose of this study is to develop target acquisition and tracking technology for ARPA Radar implementation. After examining the previous studies, applicable algorithms and technologies were developed to be combined and basic ARPA functions were developed as a result. As for main research contents, the sequential image processing technology such as combination of grayscale conversion, gaussian smoothing, binary image conversion and labeling was deviced to achieve a proper target acquisition, and the NNS(Nearest Neighbor Search) algorithm was appllied to identify which target came from the previous image and finally Kalman Filter was used to calculate true course and speed of targets as an analysis of target behavior. Also all technologies stated above were implemented as a SW program and installed onboard, and verified the basic ARPA functions to be operable in practical use through onboard test.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2010.05a
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• pp.389-392
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• 2010

In this paper, it presents to detect location using structural information of hand from the input color images on Webcam and to recognize hand gestures. In this system, based on the skin color, the image changes a binary number and labels. Within each labeled area, we can find the Maximum Inscribed Circle using Voronoi Diagram. This circle can find the center of hand. And the circle extracts hand region from analyzing the ellipse elements to relate Maximum Inscribed Circle. We use the Maximum Inscribed Circle and the ellipse elements as characteristic of hand gesture recognition. In various environments, we cannot recognize the object that have similar colors like the background colors. But the proposed algorithm has the advantage that can be effectively eliminated about it.

• Korean Journal of Food Science and Technology
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• v.30 no.4
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• pp.970-975
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• 1998

Eighty percent of acetone extract were isolated from the leaves of Korean Oolong tea using Sephadex LH-20, MCI-gel, Fuji gel. The compound reacted the red and the blue with anisaldehyde and $FeCl_3$, respectively. Instrumental analysis of the derivatives of this compound showed that the chemical structure was decided to $epicatechin-(4{\beta}{\rightarrow}8)-epigallocatechin-3-O-gallate$ as a kind of dimeric proanthocyanidine, that bound with -(-)epicatechin and -(-)epigallocatechin-3-O-gallate, at the upper and the lower, respectively. Considering inhibition effect on xanthin oxidase by 62% levels at $50{\;}{\mu}mole$, this compound showed a possibility to be used as a new material for functional food.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.12 no.1
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• pp.13-21
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• 2019

The content based on image retrieval makes use of features of information within image such as color, texture and share for Retrieval data. we present a novel approach for improving retrieval accuracy based on DCT Filter-Bank. First, we perform DCT on a given image, and generate a Filter-Bank using the DCT coefficients for each color channel. In this step, DC and the limited number of AC coefficients are used. Next, a feature vector is obtained from the histogram of the quantized DC coefficients. Then, AC coefficients in the Filter-Bank are separated into three main groups indicating horizontal, vertical, and diagonal edge directions, respectively, according to their spatial-frequency properties. Each directional group creates its histogram after employing Otsu binarization technique. Finally, we project each histogram on the horizontal and vertical axes, and generate a feature vector for each group. The computed DC and AC feature vectors bins are concatenated, and it is used in the similarity checking procedure. We experimented using 1,000 databases, and as a result, this approach outperformed the old retrieval method which used color information.

• Journal of the Korean Applied Science and Technology
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• v.38 no.2
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• pp.333-342
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• 2021

This study developed a fermented chestnut puree by lactic acid bacteria fermentation using steamed chestnut paste at 95℃ for 90 min and the quality characteristics were investigated. In addition, quality of the characteristics of the fermented chestnut puree during fermentation by lactic acid bacteria were reported. 12 strains of lactic acid bacteria were inoculated to steamed chestnut paste at a concentration of 2%(v/w), respectively, and incubated at 37℃ for 48 hr. Lactobacillus plantarum(KCTC 21004) was the most superior in acid production among 12 strains of lactic acid bacteria to the fermented chestnut puree. The effect of steamed chestnut concentration, inoculum size and fermentation temperature for fermented chestnut puree on physical properties and fermentation characteristics were investigated. As a result there was no significant difference on physiochemical properties but the optimum concentration of the steamed chestnut for puree properties is 50%.

• The Korean Journal of Applied Statistics
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• v.34 no.2
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• pp.225-238
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• 2021

The ROC, TOC, and TROC curves, which are visually descriptive methods of exploring the performance of the binary classification model, are implemented with TP, TN, FP, FN which consist of the confusion matrix, as well as their ratios TPR, TNR, FPR, FNR. In this study, we consider two types odds and then propose an odds curve representing these odds. And show the relationship between the odds curve and ROC curve. Based on the odds curve, we propose not only two statistics that measure the discriminant power of the odds curve but also the criteria for validation ratings of the odds curve. According to the shape of the odds curves, two classification distributions can be estimated and a criterion for validation ratings can be determined. The odds curve can be meaningfully used like other visual methods, and two kinds of measures for the discriminant power can be also applied together as an alternative criterion.

• Journal of Korean Medicine for Obesity Research
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• v.22 no.1
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• pp.86-92
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• 2022

The purpose of this study was to investigate the effects of dietary therapy with Korean herbal medicine and cultivated wild ginseng pharmacopuncture on change of body composition retrospectively. We analyzed the medical records of 26 patients, who carried out dietary therapy with Korean herbal medicine and cultivated wild ginseng pharmacopuncture at Moemfit Clinic, Charmjin Oriental Medicine for 8-12 weeks. And exercise and nutrition were recommended self-developed food, Moemfit Shake, Moemfit Hankki and walking exercise for one hour a day. The body composition values (body weight, body mass index, body fat mass, skeletal muscle mass, waist-hip ratio, visceral fat area, percent body fat) decreased after dietary therapy with Korean herbal medicine and cultivated wild ginseng pharmacopuncture significantly. But, percent skeletal muscle increased significantly. Results from this investigation showed that dietary therapy Korean with herbal medicine and cultivated wild ginseng pharmacopuncture has positive effects on changes of body compositions.