• Journal of Ginseng Research
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• 제44권1호
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• pp.154-160
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• 2020

Background: Korean ginseng (Panax ginseng Meyer) powder is in rising demand because powder forms of foods are convenient to handle and are highly preservable. However, ginseng powder (GP) manufactured using the conventional process of air drying and dry milling suffers nutrient destruction and a lack of microbiological safety. The objective of this study was to prepare GP using a novel process comprised of UV-TiO₂ photocatalysis (UVTP) as a prewashing step, wet grinding, high hydrostatic pressure (HHP), and freeze-drying treatments. Methods: The effects of UVTP and HHP treatments on the microbial population, ginsenoside concentration, and physiological characteristics of GP were evaluated. Results: When UVTP for 10 min and HHP at 600 MPa for 5 min were combined, initial 4.95 log CFU/g-fw counts of total aerobes in fresh ginseng were reduced to lower than the detection limit. The levels of 7 major ginsenosides in UVTP-HHP-treated GP were significantly higher than in untreated control samples. Stronger inhibitory effects against inflammatory mediator production and antioxidant activity were observed in UVTP-HHP-treated GP than in untreated samples. There were also no significant differences in CIELAB color values of UVTP-HHP-treated GP compared with untreated control samples. Conclusion: Combined processing of UVTP and HHP increased ginsenoside levels and enhanced the microbiological safety and physiological activity of GP.

• Food Science and Biotechnology
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• 제16권1호
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• pp.99-103
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• 2007

The purpose of this study was to develop a simple detection method, possibly at the species-level, that allows for large-scale screening of bifidobacteria. Human fecal samples were plated on MRS-raffinose agar containing cysteine and neomycin sulfate, serving as selective pressure for bifidobacteria, and 0.003%(w/v) bromocresol green. All of the test strains grew well on this medium at $37{\pm}1^{\circ}C$, forming white colonies surrounded by yellow halos, which presented a sharp contrast against the green background. In this disc assay, the required incubation time to develop a yellowish zone varied with the species of Bifidobacterium that was tested, allowing for differential counts and easy identification at the species-level: 10-14 hr for B. bifidum, 20-22 hr for B. catenulatum and B. infantis. and 24-25 hr for B. longum and B. breve. No apparent color was observed for B. angulatum and B. adolescentis 28 hr after inoculation. To evaluate the results of pH indicator-based identification, individual isolates were subjected to a colony-PCR experiment with genus-specific primers. The amplified products from the isolates were in good accordance with those from the reference strains at a level of 95% agreement. These results suggest that the present method could be conveniently applied to cell counts, as well as to the preliminary identification of bifidobacteria from a variety of sample types including human feces, dairy products, and commercial probiotic supplements.

• 한국전자통신학회논문지
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• 제8권10호
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• pp.1443-1449
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• 2013

전방 차량의 자동검출은 충돌회피, 자동운행제어 그리고 자동 헤드램프 조정 등의 고급 운전지원시스템의 통합 요소이다. 주야간 상관없이 전방 차량 자동 검출과 운행 상태를 인지하는데 있어 후미등은 중요한 역할한다. 그런데, 많은 운전자들이 차량의 후미등 상태를 알지 못하고 운행하는 경우가 많다. 따라서, 후미등에 이상이 있는 차량에 대하여 자동으로 후미등 이상 상태를 알려주는 시스템이 필요하다. 본 논문에서는 영상처리 및 인식기술을 기반으로 차량의 후미등 상태를 인식하는 방법을 제안한다. 톨게이트 등으로 진입하는 차량을 검출하기 위하여 배경추정기법, 옵티컬 플로우(optical flow) 그리고 Euclidean 척도를 이용한다. Lab 색좌표에서 집중 맵(saliency map)을 적용하여 차량에서 후미등 영역을 검출하고 상태를 판정한다. 고속도로 톨게이트 영상을 이용하여 후미등 상태인식 실험을 하고, 제안하는 방법이 운전자에게 후미등 상태 전달하는데 활용할 수 있음을 보인다.

• Journal of Biosystems Engineering
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• 제41권4호
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• pp.373-388
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• 2016

Background: Recent inquiries into high-quality foods have discussed the importance of the functional aspects of foods, in addition to traditional quality indicators such as color, firmness, weight, trimming loss, respiration rate, texture, and soluble solid content. Recently, functional Chinese cabbage, which makes up a large portion of the vegetables consumed in Korea, has been identified as an anticancer treatment. However, the investigation of practical issues, such as the effects of storage conditions on quality indicators (including functional compounds), is still limited. Purpose: We reviewed various studies on variations in the quality indicators and functional compounds of Chinese cabbage in response to different storage environments, focusing on storage temperature and storage period. In particular, we emphasized the effect of storage temperature and storage period on glucosinolate (GSL) levels, in order to provide guidelines for optimizing storage environments to maximize GSLs. Additionally, we used response surface methodology to propose experimental designs for future studies exploring the optimal storage conditions for enhancing GSL contents. Review: Large variations in quality indicators were observed depending on the cultivar, the type of storage, the storage conditions, and the harvest time. In particular, GSL content varied with storage conditions, indicating that either low temperatures or adequate air composition by controlled atmospheric storage may preserve GSL levels, as well as prolonging shelf life. Even though genetic and biochemical approaches are preferred for developing functional Chinese cabbage, it is important to establish a practical method for preserving quality for marketability; a prospective study into optimal storage conditions for preserving functional compounds (which can be applied in farms), is required. This may be achievable with the comprehensive meta-analysis of currently published data introduced in this review, or by conducting newly designed experiments investigating the relationship between storage conditions and the levels of functional compounds.

• 한국실내디자인학회논문집
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• 제18권1호
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• pp.3-10
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• 2009

The relationship between light and space is fundamental In an opera stage design. In contemporary stage design, light, color and space themselves became one of tile most important elements to express and symbolize the content of the opera. This was very different compared to the primitive and medieval opera stage design in the past. The designer tried to represent the same periodical background of the opera with exact replica of the buildings as well as costumes. In comtemporary performance art, light became one the most important aspects in design. Max Keller is one of the living pioneers in stage lighting design. This thesis that is based on his lighting experiments and projects attempts to examine how contemporary stage design and light are applied and what kind of characteristics they have. One of the Wagner's opera, "Tristan und Isolde" was selected to be further analyzed. Three different "Tristan und Isolde" opera stage designs were carefully studied in terms of how three designs are differently constructed for specific same contents of the opera. This sort of comparison study is crucial when there is a strict parameter that is the opera itself. It was found that three opera stages have very different stage designs and unique ways of expressing the opera flow and contents. However, in some parts, very similar lightings were used. This sort of multi-disciplinary study can be helpful to re-think the interior environment by applying light as a fundamental medium.

• 한국실내디자인학회논문집
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• 제19권1호
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• pp.55-62
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• 2010

This study examines attributes and expression characteristics of 'Mix & Match' which is one of the major current trends in interior designs. The concept and background of 'Mix & Match' was ascertained through research of previous documents and studies, and its attributes were explored. In order to examine the expression characteristics to see how they are expressed in actual interior designs, case analyses were carried out centering on the expression elements such as material, light & lighting, color, furniture and objects which were regarded as important in previous studies and related articles so far. The case analyses were carried out for works where the concept of 'Mix & Match' was prominent in designs produced in 2007 and 2008, chosen from the main reports of the representative interior design journals, 'Interiors' and 'INTERNI & Decor'. As a result, it has been found that 'Mix & Match' is not limited to one attribute but the temporal, spatial and genre attributes are present all at the same time, or various expression elements exist in one attribute. This is a distinct character commonly shown in most of the cases and each expression element is expressed in variety according to spatial concept, from a simple parallel to substitution, transfer and modification (simplification, transformation of the scale, rate modification etc.) Therefore, in creating the space for 'Mix & Match' or in interpretation of it, the understanding of these expression characteristics would make it possible for clearer and more various applications of design, and furthermore will be meaningful for supply and accumulation of reference in design communication.

• 한국전기전자재료학회논문지
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• 제33권4호
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• pp.303-309
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• 2020

This study proposes a crack identification algorithm to analyze the surface condition of porcelain insulators and to efficiently visualize cracks. The proposed image processing algorithm for crack identification consists of two primary steps. In the first step, the brightness is eliminated by converting the image to the lab color space. Then, the background is removed by the K-means clustering method. After that, the optimum image treatment is applied using morphological image processing and median filtering to remove unnecessary noise, such as blobs. In the second step, the preprocessed image is converted to grayscale, and any cracks present in the image are identified. Next, the region properties, such as the number of pixels and the ratio of the major to the minor axis, are used to separate the cracks from the noise. Using this image processing algorithm, the precision of crack identification for all the sample images was approximately 80%, and the F1 score was approximately 70. Thus, this method can be helpful for efficient crack monitoring.

• 대한후두음성언어의학회지
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• 제21권2호
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• pp.133-138
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• 2010

Background and Objectives : High-speed imaging can be useful in studies of linguistic and artistic singing styles, and laryngeal examination of patients with voice disorders, particularly in irregular vocal fold vibrations. In this study, we introduce new laryngeal imaging systems which are commercially available high speed cameras connected with a laryngoscope. Materials and Method : The laryngeal images were captured from three different types of cameras. First, the adapter was made to connect with laryngoscope and Casio EX-F1 to capture the images using $2{\times}150$ Watt Halogen light source (EndoSTROB) at speeds of 1,200 tps (frame per second)($336{\times}96$). Second, Phantom Miro ex4 was used to capture the digital laryngeal images using Xenon Nova light source 175 Watt (STORZ) at speeds of 1,920 fps ($512{\times}384$). Finally, laryngeal images were captured using MotionXtra N-4 with 250 Watt halogen lamp (Olympus CLH-250) light source at speeds of 2,000tps ($384{\times}400$) by connecting with laryngoscope. All images were transformed into the Kymograph using KIPS (Kay's image processing Software) of Kay Pentex Inc. Results: Casio EX-F1 was too small to adjust the focus and screen size was diminished once the images were captured despite of high resolution images. High quality of color images could be obtained with Phantom Miro ex4 whereas good black and white images from Motion Xtra N-4 Despite of some limitations of illumination problems, limited recording time capacity, and time consuming procedures in Phantom Miro ex4 and Motion Xtra N-4, those portable devices provided high resolution images. Conclusion : All those high speed cameras could capture the laryngeal images by connecting with laryngoscope. High resolution images were able to be captured at the fixed position under the good lightness. Accordingly, these techniques could be applicable to observe the vocal fold vibration properties in the clinical practice.

• 한국식생활문화학회지
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• 제11권1호
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• pp.43-52
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• 1996

[Goshogi] which is held from 9th to 16th January, every year is the Buddhist service of praying for the soul of Shinran's $(l173{\sim}1262)$ after death. It is the most majestic high-filling style and also unparalled in the annals of Japanese history in sacrificial offering. Shinran was horned in the Fujiwara's family. And not only he believed Prince Shodoku's belife but also retired to the mountain to enter the priesthood by it. Prince Shodoku built Horyu temple which is the typical temple of Nara ages. Buddism was transmitted from Korean peninsula, three countries of Silla, Bekje and Kokuryo effected on many field of Japnese culture during that ages. At the same time, Kasugadaisha and Danjanjinja of Shinto religion was built by Fujiwara Family. Both of them was Buddhist temple before. Throughout like these historical background, the facts what the religious services and the sacrificial offerings for Prince Shodoku, Wakamiyasai of Kasugas' and Kakitsusai of Danjanjinja must be influenced from Korean Peningula. So the dietary culture of the religious rites and traditional customs between two countries could be thought the relation with a narrow stream strait. But among them, in the size, color and shape, the cooking method and technique in the usage of rice powder and sugar, it is tops in value. The noteworthy points of the thought were as follows: 1. high-filling style of the sacrificial offerings what is mixed and harmonized with Buddhism, Confucious, Sharmanism, Toaism and Korean traditioal customs. 2. eating together of god and human. 3. the fusion of gods and Buddha.

• 패션비즈니스
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• 제4권1호
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• pp.73-85
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• 2000

The purpose of this study is for considering about Zen fashion in the point of view of culture transition. Through this research, the Far-East including Korea will be confirmed as a center of fashion culture in 21st century. The contents are the meaning of culture transition in Post Modern period, the meaning of Zen and changing of fashion trend as the background of Zen Fashion, and the characteristics of Zen fashion design. The results are as follows: Anti-western movement or dismantlement of culture has been represented the limitation of western centered culture. So the interesting about East means the changing to east from west in ideas. To make new creation in fashion field, the comprehension about the western fashion which has been preceeded and new trials using the our tradition will be needed. Zen is a kind of Buddhism and the essence of it is to find myself and express individual experiences. The change of one's sens of value, new age movement and concerning of environment and ecology make more comfortable, simple and healthy elements in clothing. The fusion style is under a vogue in life style and Zen is the core of this trend. The characteristics of Zen fashion are flat dismantlement which has been know as a Japanese style, oriental minimalism and nature beauty of ecology. This characteristics are found not only the shape, color but the will of the behind. The pursing temperance and naturalism are represented the fashion culture transition from the West to Far-East. Therefore multi points of fashion research is very important and the identify about Korean fashion is required in lately for new fashion paradigm.