• 한국식품저장유통학회지
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• 제5권4호
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• pp.335-338
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• 1998

골판지상자에 기능성 필름을 첨합한 포장상자(FC)의 배 저장 중 품질유지 상태를 조사하고자 대조구로 기존에 유통중인 골판지 상자와 0.02, 0.04mm의 LDPE필름과, 0.02와 0.04mm의 기능성MA필름(CE)에 배를 포장하여 5 C에 60일간 저장하면서 신선도 변화를 비교 고찰하였다. 중량변화는 대조구는 2.9% 감소했으며, FC, LDPE와 CE 포장구들은 1.0-0.5% 감소했다. 경도는 각 포장방법간에 차이가 없었으며 비타민C 함량도 필름포장구들과 FC 포장구에서 대조구보다 더 높게 유지되고 있었다. 산도와 당도는 대조구가 필름포장구들과 FC 포장구 보다 변화가 심하게 나타났고 전체적인 외관상의 기호도 FC 포장구와 필름포장구에서 양호한 것으로 나타났다. 이상의 결과에서 FC 포장재를 신선도 유지에 활용할 수 있을 것으로 판단되었다.

• 방송공학회논문지
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• 제26권5호
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• pp.621-642
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• 2021

본 논문에서는 현재 방송 중인 Full HD, Up-scaling UHD, 4K UHD Native의 세 가지 콘텐츠품질을 대상으로 일반 가정의 TV 시청거리인 2.5m 거리에서 55, 65, 75인치 세 가지 크기의 TV수상기를 이용하여 주관적 화질평가를 실시하였다. 본 화질평가 실험은 화질평가 응답이 부적합한 4명의 데이터를 제외한 169명의 데이터를 대상으로 SPSS 25.0를 이용하여 콘텐츠품질이 성별, 수상기 크기, 선호프로그램 장르에 따른 영향을 분석하였다. 또한 측정기를 통한 객관적 화질평가와 주관적 화질평가 결과도 비교 분석하였다.

• 한국포장학회지
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• 제27권2호
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• pp.115-121
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• 2021

The evaluation of package temperature for fresh preservation of cucumber was investigated. The fresh cucumber is available in markets of Korea during whole seasons, for the help of farmer, distributor and consumer. Cucumbers were stored within cardboard boxes packaging covered with low density polyethylene (LDPE) at different temperatures (5, 10, 15 and 20℃). Changes in weight loss, hue angle, firmness, moisture content and general appearance (shape of cucumber) were investigated during storage of cucumbers. General appearance index with non-packaging decreased more than with LDPE film packaging at 5℃ and 10℃. During storage of cucumbers, general appearance index as freshness showed packaging effect at low temperature than room temperature. In the fresh weight loss, the packaged cucumbers were less reduced than that of the non-packaging ones. At color change, Hue angle of cucumber stored within low temperature with film packaging decreased gradually during storage. However remarkable change in hue angle were observed in cucumber within LDPE film packaging treatments of 15℃ and 20℃ storage. The effect of hue angle with packaging appears differently depending on the storage temperature conditions. The firmness and moisture content of cucumber flesh were not affected by packaging and storage temperature. In this experiment, cucumbers packaged with LDPE film at 5℃ and 10℃ were the most desirable for extending the quality. These results suggest that packaging of low temperature treatments in combination could be effective in prolonging the shelf life of cucumber.

• International Journal of Internet, Broadcasting and Communication
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• 제11권2호
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• pp.67-75
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• 2019

"No IP, No Content" has become a phenomenon in the content industry, high-quality IP has a strategic importance. It has become a Trinity in the movie-anime-game basic package, Competition is more intense. However, there is a tremendous amount of know-how hidden behind the use of IP to operate games well. We are worth exploring in detail. The research and analysis of digital IP market, the advantages and disadvantages will be the focus of our pragmatic research. As an emerging market in the digital industry, China has great research value. This paper analyzes the status quo of the current Chinese market by comparing the mature US and Japanese markets. For example, the research of American Disney Company analyzes the mature market structure of Japan. compared with the excellent case of the Chinese market legend of qin. By studying the current situation of China's digital market, analyzing the interest trends of the customer base, discovering existing problems and improving the accuracy of the prediction and judgment of the Chinese digital market in the future.According to the survey, the IP heat is mainly concentrated in six categories of games, animation, TV, variety, movies, and novels. At present, the most popular IP of manufacturers have three major categories. This article will conduct research and analysis on digital IP, and analyze the market status of China, the United States, and Japan and the research on outstanding representative works in the market.

• 정보보호학회논문지
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• 제16권5호
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• pp.3-13
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• 2006

컴퓨팅 기기들이 점점 산재되고, 기기들의 이동성 또한 증가되면서, 동기적이고 직접적인 점대점 통신 모델은 여러 형태의 분산 컴퓨팅 환경에 적용하기에 적합하지 않다. 이벤트 서비스와 같은 간접통신 모델을 이용하면, 분산 환경에서의 응용들 사이의 결합도를 감소시키고 많은 정적인 요구들을 제거할 수 있는 이점이 있다. 본 논문에서는 신뢰할 수 있는 유비쿼터스 환경을 만들기 위해 Jini 기반의 안전한 이벤트 서비스를 설계하고 구현한다. 구현된 이벤트 서비스는 내용기반의 검색이 가능하고, 정당한 권한을 지닌 제공자와 소비자만이 이벤트를 주고받을 수 있도록 한다. 이벤트 서비스에 인증과 인가기능을 제공하기 위해 SPKI/SDSI 인증서를 이용하고, 이벤트 제공자와 소비자의 분리, 이동기기의 연결 끊김 지원, 내용기반의 검색을 위해 Jini의 자바스페이스를 확장하여 구현한다.

• 정보보호학회논문지
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• 제32권4호
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• pp.637-645
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• 2022

클라우드 컴퓨팅은 수십 년을 걸쳐 인기를 얻고 있으며, 그에 따라 클라우드 네이티브 애플리케이션에 주요하게 사용되는 기술인 컨테이너 또한 주목을 받고 있다. 이러한 컨테이너 기술은 기존 VM보다 가볍고 성능이 뛰어나지만, 호스트 시스템과 커널을 공유하거나 이미지 레지스트리에서 이미지를 업/다운로드 하는 등의 문제로 여러 가지 보안상의 위협이 존재한다. 컨테이너의 보안 위협 중 하나로 컨테이너 생성의 소스가 되는 컨테이너 이미지의 무결성을 언급할 수 있다. 또한, 컨테이너 애플리케이션이 동작하는 동안의 런타임 보안이 매우 중요하며, 런타임에서 컨테이너 애플리케이션의 동작을 모니터링함으로써 컨테이너에서 발생하는 이상 행위를 탐지하는 데에 도움을 줄 수 있다. 따라서 본 논문에서는 첫째로, 컨테이너 이미지의 무결성을 보장하기 위해 기존의 Docker Content Trust(DCT) 기술을 기반으로 자동으로 이미지의 서명을 검사하는 서명 검사기를 구현한다. 다음으로 Cloud Native Computing Foundation (CNCF)의 오픈소스 프로젝트인 falco를 기반으로 falco 이미지의 배포 간편성을 위해 새로 생성한 이미지를 소개하고, 간편하게 모니터링 시스템을 구축할 수 있도록 돕는 docker-compose를 구현 및 패키지 구성을 제안한다.

• 한국IT서비스학회지
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• 제12권4호
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• pp.449-459
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• 2013

The software which is used for electronic bulletin boards have shortcomings that the addition of new function and new information's type to the order point software is very difficult, and the aggressive adaption of newly introduced type of media is impossible because the software is developed by custom solution. Eventually new cost and time are required to enhance functionality or performance to software of DID(Digital Information Display). In this paper, we proposed the scheme to package DID's contents and to customize it using plug-in method. We conducted a case study of this scheme. The platform which can install Apps to DID as one of content was designed. Apps can be inserted by plug-in type on DID platform and run separately with DID framework. As a result, We got advantage that various contents, functions and Apps which are drived on Android can be displayed without any restriction and dependency because Apps itself is one of dynamic notice object. This solution increase reusability of Apps or contents, and can be used easily in various places such as airports, stations, terminals, and front desk by customizing.

• 대한간호학회지
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• 제45권4호
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• pp.501-512
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• 2015

Purpose: The purpose of this study, which was guided by the Resiliency Model of Family Stress, Adjustment, and Adaptation, was twofold: (a) to explore family and parental adaptation and factors influencing family adaptation in Korean families of children with Down syndrome (DS) through a quantitative methodology and (b) to understand the life with a Korean child with DS through a qualitative method. Methods: A mixed-methods design was adopted. A total of 147 parents of children with DS completed a package of questionnaires, and 19 parents participated in the in-depth interviews. Quantitative and qualitative data were analyzed using stepwise multiple regression and content analysis respectively. Results: According to the quantitative data, the overall family adaptation scores indicated average family functioning. Financial status was an important variable in understanding both family and parental adaptation. Family adaptation was best explained by family problem solving and coping communication, condition management ability, and family hardiness. Family strains and family hardiness were the family factors with the most influence on parental adaption. Qualitative data analysis showed that family life with a child with DS encompassed both positive and negative aspects and was expressed with 5 themes, 10 categories, and 16 sub-categories. Conclusion: Results of this study expand our limited knowledge and understanding concerning families of children with DS in Korea and can be used to develop effective interventions to improve the adaptation of family as a unit as well as parental adaptation.

• 한국포장학회지
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• 제10권1호
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• pp.7-14
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• 2004

Migration behavior of selected solvents and food samples showed differences of the chemical structures and polarities, the food samples which have similar polar expresses more higher affinity than different polar degrees. Water which is polar has a highest partitioning coefficient values on polar isopropanol, and oil which is nonpolar has highest partitioning value on non-polar toluene. The increasing order of partitioning values was accord with increasing water contents in food samples. It is showed that the wheat flour with 13.2% moisture content has the highest partitioning coefficient values on the isopropanol with -OH. Kp value of sugar showed remarkable lower partitioning coefficient values than other food samples due to high degree crystallinity. This phenomenon can be predictable with ${\delta}$ values, because order of partitioning coefficient values which comes out through the experiment and the sequence of Hildebrand solubility parameter value difference between food sample and printing ink solvent correspond almost. This Hildebrand solubility parameter value can be easily applied to the food package industry because the effect of food-safety can be considered without passing through complicated steps by using this method.

• 환경위생공학
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• 제11권2호
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• pp.43-52
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• 1996

Using rotating biological contactor(RBC) with artificial endogenous stage and aerobic fixed biofilm reactor(AFBR), organic material removal and biological nitrification of piggery wastewater has been studied at a pilot plant. RBC was operated in the endogenous phase at a interval of every 25 days. The concentration of COD, BOD and TKN in influent wastewater were from 2,940 to 3,800 mg/L, from 1,190 to 1,850 mg/L and from 486 to 754 mg/L respectively. The maximum active biomass content represented as VSS per unit aera was $2.0mg/cm$^{2}$ and biofilm dry density of $17mg/cm^{3}$ was observed at biofilm thickness of $900{\;}{\mu}m$. It was observed that the pilot scale RBC/AFBR process exhibited 72 percentage to 93 percentage of BOD removal, In order to obtain more than 90 percentage of BOD removal, the organic loading rate to the RBC/AFBR process should be maintained less than $0.09{\;}m^{3}/m^{2}{\cdot}day(125.9g{;\}BOD/m^{3}{\cdot}d$. The TKN removal efficiencies was from 45.5 to 90.9 percentage according to vary influent loading rate, It was estimated that the RBC/AFBR process consumed approximately 6.2 mg/L(as $CaCO_{3}$) of alkalinity per 1 mg/L of $NH_{3}$-N oxidized as the nitrification took piace.