• 한국재료학회지
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• 제25권11호
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• pp.612-615
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• 2015

In this work, on-site corrosion behavior of heat resistant tubes of T91, used as components of a superheater in a power plant for up to 25,762 h, has been investigated using scanning electron microscopy(SEM), energy dispersive X-ray spectroscopy (EDS), and electron backscattered diffraction(EBSD), with the objectives of studying the composition, phase distribution, and evolution during service. A multi-layer structure of oxide scale was found on both the steamside and the fireside of the tube surface; the phase distribution was in the order of hematite/magnetite/spinel from the outer to the inner matrix on the steamside, and in the order of slag/magnetite/spinel from the outer to the inner matrix on the fireside. The magnetite layer was found to be rich in pores and cracks. The absence of a hematite layer on the fireside was considered to be due to the low oxygen partial pressure in the corrosion environment. The thicknesses of the hematite and of the slag-deposit layer were found to exhibit no significant change with the increase of the service time.

• 한국가구학회지
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• 제18권3호
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• pp.211-223
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• 2007

21 Century is said the age of cultural industry. In this cultural Industry one of very important factors which guides this times is the exploitation of cultural goods, which is based on regional identity. Therefore, at this point of time when its weighty has been raised, the aim of this study is to fill the image Korean tradition and modernity culture in them, through the search on their characteristics among regions and nations, desk the cultural service goods which gets survival power of traditional and cultural identity. Nine existing Hahoe masks are changed into nine new cultural items, which are presented the nine dreams of Hahoe masks. As consumer's choice is diversified by a set of products, main concept in this study is the focus on modernity, rationality, traditionality and popularity. The main concept of this study is on rational functions and convenience, the harmony of tradition and modernity. As said above, in the process of manufacture the mass production of goods is stressed, and by getting the composition and making a set of goods, the choice of consumers will be extended. Getting ideal globalization by the coexistence of tradition and modernity on goods, is very important. Consequently, cultural goods must be recognized as a factor of its medium, and also, on domestic cultural goods people's interest must be risen all the more.

• Structural Engineering and Mechanics
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• 제70권6호
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• pp.751-763
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• 2019

Steel-concrete composition is widely used in the construction due to efficient utilization of materials. The service load behavior of composite structures is significantly affected by cracking, creep and shrinkage effects in concrete. In order to control these effects in concrete slab, an efficient and novel strategy has been proposed by use of fiber reinforced concrete near interior supports of a continuous beam. Numerical study is carried out for the control of cracking, creep and shrinkage effects in composite beams subjected to service load. A five span continuous composite beam has been analyzed for different lengths of fiber reinforced concrete near the interior supports. For this purpose, the hybrid analytical-numerical procedure, developed by the authors, for service load analysis of composite structures has been further improved and generalized to make it applicable for composite beams having spans with different material properties along the length. It is shown that by providing fiber reinforced concrete even in small length near the supports; there can be a significant reduction in cracking as well as in deflections. It is also observed that the benefits achieved by providing fiber reinforced concrete over entire span are not significantly more as compared to the use of fiber reinforced concrete in certain length of beam near the interior supports in continuous composite beams.

• 한국컴퓨터정보학회논문지
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• 제14권12호
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• pp.41-53
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• 2009

본 논문에서는 유비쿼터스 기술 기반의 지능형교통시설물 관리 서비스를 위한 비즈니스 모델과 이의 구현을 위한 시스템 구성방안 및 기술 요소들에 대하여 제안한다. 먼저 비즈니스 모델에서는 지능형교통시설물 관리의 서비스 기능과 구성, 그리고 비즈니스 프로세스 및 이해관계자들 간의 수요/공급 관계를 제시한다. 이와 함께, 비즈니스 모델 구현을 위한 시스템 구성방안을 제안한다 시스템 구성을 위해 필요한 네트워크, 인프라, 플랫폼의 관점에서 기술요소들을 살펴보고. 주요 기술들에 대한 비교 분석을 통해 교통시설물관리에 적절한 기술 구성방안을 함께 제시한다. 결론적으로, 본 연구를 통해 제안된 비즈니스 모델 및 기술 구현 방안은 지능형 교통시설물 관리를 위한 가이드라인을 제시한다.

• 한국정보과학회논문지:소프트웨어및응용
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• 제37권6호
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• pp.430-445
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• 2010

유비쿼터스 컴퓨팅 환경에서 사용자에게 서비스를 자동으로 제공하기 위해 사용되는 동적 서비스 합성은 효과적인 서비스 기술 및 모델링 기법이 전제되어야 한다. 이를 위해 이전 연구에서는 유비쿼터스 환경 내의 기기의 기능을 추상화한 'u-서비스'라는 개념을 제안하였고, 온톨로지로 구조화하는 메커니즘과 u-서비스의 특성을 표현하기 위한 기술 규격을 정립한 바 있다. 하지만 u-서비스 온톨로지 설계시에 효율성을 검증하기 위한 체계나 기준을 제공하지는 못하고 있다. 또한 기존의 소프트웨어 제품이나 컴퓨팅 시스템의 품질 평가 모델은 유비쿼터스 서비스의 특성을 고려하지 못하므로 직접 적용하기에도 적합하지 않다. 따라서 본 연구에서는 이전 연구에서의 u-서비스 온톨로지 구축 방법론을 바탕으로 효과적인 유비쿼터스 서비스 온톨로지를 설계하기 위한 품질 평가 모델을 제안한다. 유비쿼터스 서비스 온톨로지의 특성을 반영하여 모델링 목표와 설계 단계에서의 평가 지표를 도출하고 각 품질 속성을 정량화하기 위한 메트릭을 정의한다. 이전 연구에서 구축한 u-서비스 온톨로지에 적용한 결과, 제안한 품질 평가 모델을 통해 유비쿼터스 서비스 온톨로지의 적합성을 다각도로 분석하고 설계 개선을 위한 모델링 원칙을 제시할 수 있음을 보였다.

• 한국문헌정보학회지
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• 제57권2호
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• pp.453-475
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• 2023

본 연구는 북미 지역 50개 대학도서관 홈페이지를 대상으로 연구데이터 관련 서비스명과 서비스명 간의 계층 관계, 연구데이터 서비스 담당자의 직책명과 직무내용을 살펴보았다. 연구 결과, 북미 지역 대학도서관의 경우 연구데이터 관련 서비스명 간에는 분명한 계층 관계가 존재하였고 이를 통해 연구데이터 관련 서비스명들의 계층 구조를 파악할 수 있었다. 연구데이터 관련 서비스 담당자의 직책명으로는 'Librarian'이 가장 많이 사용되고 있었고 'Librarian'이 담당하는 직무내용이 가장 폭넓은 것으로 나타났다. 'Librarian' 외에 'Specialist', 'Analyst' 등의 다양한 연구데이터 관련 전문인력의 직책명이 사용되고 있음이 발견되었다. 다양한 직책명의 존재는 대학도서관이 연구데이터 관련 서비스의 전문성을 강화하려는 의도로 파악되었다. 국내 대학도서관의 연구데이터 서비스 구성체계는 '연구데이터 서비스'를 최상위 서비스명으로 하고 '연구데이터 관리 서비스', 'GIS 서비스', '데이터 시각화 서비스'를 하위 서비스명으로 할 것을 제안하였다. 그리고 연구데이터 관련 서비스를 제공하는 초기에는 기존 대학도서관 사서 간에 업무조정을 통해 연구데이터 관련 서비스를 제공하는 것이 필요하며 점진적으로 연구데이터 관련 전문 인력의 신규 채용을 고려할 수 있음을 제안하였다.

• 한국실내디자인학회논문집
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• 제15권5호
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• pp.193-201
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• 2006

In according as the social action of women is active, the average life span is longer than male, not only woman's social position is higher, but also the construction of the more professional woman special hospital Is increased. In occasion to the recent woman special hospital, give medical treatment about pediatrics and the breast surgery as well, and the sphere is increasing as compose the variety network, from the health medical center to check the woman's physical to the postpartum care center. The trend of the lobby is arranged the more service area as the concept of the woman hospital is changed, the sphere is increasing. Accordingly, this study research and analyze the service zone and design elements on the focus the lobby of the internal woman special hospital, have an intention of guideline about the interior design of the after woman hospital. As the subject of study, selected the hospital that lobby serves to show the identity of total space, and the woman special hospital that is introduced to the relation journal with architecture or interior design, is opened after 2000 years, below the 100 bed. As the study method, understand the composition of lobby space through floor analysis, examination by the visit, analyzed the arrangement constituent, the design trend. The direction of lobby space mentioned in the study result is that secure the publicness, guarantee the privacy zone, and is important that the adequate arrangement of commercial space contribute to client's mental stability, desire that inflected as the more positive communication place.

• 한국동물위생학회지
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• 제40권1호
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• pp.53-59
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• 2017

Foot and mouth disease (FMD) is highly infectious disease of cloven-hoofed animals, particularly problematic in cattle, sheep, pigs and goats for economic reasons. Last FMD outbreak in February, 2017 caused tremendous social and economical impacts. The Korean FMD policy aims to vaccinate intact animals and euthanize and bury infected animals to prevent the disease spread. However, there was a problem that the buried livestock did not decompose after several years. Therefore, the study was purposed to investigate the effect of Corynebacterium glutamicum and Bacillus licheniformis on the degradation of buried cow carcasses and on the soil condition; such as temperature, decomposition course of carcasses, composition of amino acids in the soil around carcasses, and plant root elongation to measure soil conditions. As a result, the composition of amino acids in the soil treated with C. glutamicum and B. licheniformis was generally higher than those in the untreated soil. Plant roots in soil treated with C. glutamicum and B. licheniformis grew longer than in non-treated soil. The results suggested that the toxic effect on a grave land buried with FMD infected livestock is reduced when treated with C. glutamicum and B. licheniformis in regard of odor reduction, promoted decaying process, and soil fertilization.

• Asian-Australasian Journal of Animal Sciences
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• 제15권1호
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• pp.72-78
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• 2002

The effects of housing and nutrition on the performance of growing gilts of the Nepalese Pakhribas breed were investigated. A total of 36 pigs were allocated according to a factorial design with 3 levels of nutrition, provided to achieve a target growth rate of 200, 300 or 400 g/day, and two types of housing, traditional or improved. The growth rate and body composition were monitored during the growing period and subsequent pregnancy. There was a significantly higher growth rate (p<0.01), greater $P_2$ backfat thickness (p<0.01), and greater eye muscle depth (p<0.01) at service in pigs given the higher level of nutrition. Similarly, there was a significantly higher growth rate (p<0.05), and greater eye muscle depth (p<0.10) with improved housing but no significant difference in $P_2$ backfat thickness. The conception rate was 90% at first service, with no difference between treatments. Gilts from the high plane of rearing produced a mean litter size of one piglet greater than those on the low plane, but this was not significant with the limited numbers. However, both improved plane of nutrition and reduced climatic penalty by improving housing resulted in increased birthweight of piglets (p<0.05). It is concluded that improvement in housing can give benefits equivalent to at least a 7% improvement in efficiency of feed use under traditional Nepalese circumstances for pig rearing.

• 한국축산식품학회지
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• 제43권6호
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• pp.1150-1169
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• 2023

Edible insects are gaining popularity as a potential future food source because of their high protein content and efficient use of space. Black soldier fly larvae (BSFL) are noteworthy because they can be used as feed for various animals including reptiles, dogs, fish, chickens, and pigs. However, if the edible insect industry is to advance, we should use automation to reduce labor and increase production. Consequently, there is a growing demand for sensing technologies that can automate the evaluation of insect quality. This study used short-wave infrared (SWIR) hyperspectral imaging to predict the proximate composition of dried BSFL, including moisture, crude protein, crude fat, crude fiber, and crude ash content. The larvae were dried at various temperatures and times, and images were captured using an SWIR camera. A partial least-squares regression (PLSR) model was developed to predict the proximate content. The SWIR-based hyperspectral camera accurately predicted the proximate composition of BSFL from the best preprocessing model; moisture, crude protein, crude fat, crude fiber, and crude ash content were predicted with high accuracy, with R² values of 0.89 or more, and root mean square error of prediction values were within 2%. Among preprocessing methods, mean normalization and max normalization methods were effective in proximate prediction models. Therefore, SWIR-based hyperspectral cameras can be used to create automated quality management systems for BSFL.