• 한국문헌정보학회지
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• 제22권
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• pp.1-27
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• 1992

Librarians long ago proclaimed themselves professionals. Until recently, however, librarians and information professionals gave very little thought to professional ethics, which have corne to play an increasingly important role in all areas in modern society. They have been stimulated to consider their specific domain within an ethical context now. Professional norms express obligations which include prescribing standards, principles of responsibilities, and rules of duties. Professional codes attempt to formulate the norms of professional ethics and are the basis for disciplinary measures of various kinds. This paper discusses professional properties and characteristics of libarianship with a special reference to the code of professional ethics. The codes of ethics of the American Library Association, the Library Association, and of the Japanese Library Association have been reviewed and compared. The arguments on the enforcibility of the professional codes of ethics, therefore, on their effectiveness have been discussed. Author concludes that, despite some doubts on the practical effectiveness of the ethics code expressed by a number of scholars, a code of ethics is very much required in the information professions. Properly disseminated, a code would enhance the status and standing of the profession by demonstrating concerns for the maintenance of the highest possible level of standards of professional services. It would also play an important role in raising consciousness of the clients by communicating the value of the works.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2011년도 제36회 춘계학술대회논문집
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• pp.465-465
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• 2011

Rolls-Royce is a global company producing advanced power systems for use on land, at sea and in the air. In order to develop competitive products and services, Rolls-Royce invests in technology, infrastructure and capability with much of the research carried out in a global network of University Technology Centres, such as the UTC in Thermal management at Pusan National University. Heat exchangers and thermal management play a critical role in today's gas turbine engines, maintaining the fuel and oil temperatures within the correct operational range. Future products are likely to place an increased duty on the thermal management system and thus require advances in heat exchanger design, installation and manufacturing. Heat exchangers further have the potential to play a vital role in Advanced Cycle Gas Turbine products. The Intercooled and recuperated WR21 marine gas turbine engine recently entered service with the Royal Navy and is delivering very attractive fuel burn in service. The development of an advanced cycle aero-engine is a significantly greater challenge, requiring better understanding of compact and light weight heat exchanger surfaces, novel installations and ducting systems and may required novel manufacturing techniques to achieve the volume, weight and cost necessary to realise a viable advanced cycle gas turbine aero-engine.

• 한국컴퓨터정보학회논문지
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• 제24권8호
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• pp.45-50
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• 2019

Oculus Rift is the most universal VR (virtual Reality) headset for gamers and FPS (First Person Shooting) is the most suitable game genre to play with VR. Using VR can increase the player's sense of reality and make them feel as though they are in direct contact with the enemy while battling. The suggested VR game is a first person game where the player must defend a specific target against the surging enemy all within the time limit. Many objects will need to be used in this method. Object pooling will be used in order to manage all the numerous objects. When an object is repeatedly created and deleted it typically overwhelms the memory. To resolve this issue the game initially summons the object at the beginning of the scene and afterwards only uses the object when needed, lessening the burden on the memory. A ranking system is implemented to keep the game records in order to stimulate a competitive spirit between the players, and the game has received positive response during test play among college students in their 20s.

• 한국엔터테인먼트산업학회논문지
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• 제14권5호
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• pp.207-215
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• 2020

게임의 미적경험 연구는 플레이경험의 예술적 담론 형태의 인문·사회적 접근과 게임 내 특정 대상의 구조적 판별 위주의 공학적 접근에 편중되어 있다. 본 논문은 게임플레이 과정에서 플레이어의 경험적 측면을 분석할 수 있는 미적경험 과정에 대한 이론적 틀을 마련하였다. 이를 바탕으로 미적경험에 대한 인지적 데이터(시선추적, 플레이행동, 얼굴표정)의 유형을 분류하고 그 측정방법을 제시하였다. 파일럿 테스트를 통해 측정방법의 오류 및 고려사항을 도출함으로써 플레이어 관점의 실증적 연구를 수행하는데 기여할 것이다.

• Animal Bioscience
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• 제37권2_spc호
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• pp.323-336
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• 2024

Molecular hydrogen (H₂) and formate (HCOO^-) are metabolic end products of many primary fermenters in the rumen ecosystem. Both play a vital role in fermentation where they are electron sinks for individual microbes in an anaerobic environment that lacks external electron acceptors. If H₂ and/or formate accumulate within the rumen, the ability of primary fermenters to regenerate electron carriers may be inhibited and microbial metabolism and growth disrupted. Consequently, H₂- and/or formate-consuming microbes such as methanogens and possibly homoacetogens play a key role in maintaining the metabolic efficiency of primary fermenters. There is increasing interest in identifying approaches to manipulate the rumen ecosystem for the benefit of the host and the environment. As H₂ and formate are important mediators of interspecies interactions, an understanding of their production and utilization could be a significant starting point for the development of successful interventions aimed at redirecting electron flow and reducing methane emissions. We conclude by discussing in brief ruminant methane mitigation approaches as a model to help understand the fate of H₂ and formate in the rumen ecosystem.

• BMB Reports
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• 제46권2호
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• pp.65-72
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• 2013

In situ detection of RNAs is becoming increasingly important for analysis of gene expression within and between intact cells in tissues. International genomics efforts are now cataloging patterns of RNA transcription that play roles in cell function, differentiation, and disease formation, and they are demon-strating the importance of coding and noncoding RNA transcripts in these processes. However, these techniques typically provide ensemble averages of transcription across many cells. In situ hybridization-based analysis methods complement these studies by providing information about how expression levels change between cells within normal and diseased tissues, and they provide information about the localization of transcripts within cells, which is important in understanding mechanisms of gene regulation. Multi-color, single-molecule fluorescence in situ hybridization (smFISH) is particularly useful since it enables analysis of several different transcripts simultaneously. Combining smFISH with immunofluorescent protein detection provides additional information about the association between transcription level, cellular localization, and protein expression in individual cells.

• 한국콘텐츠학회논문지
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• 제9권11호
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• pp.184-191
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• 2009

1960년대의 새로운 연극그룹들의 작업 성향을 요약해 보면 크게 두 가지로 정리해 볼 수 있을 것 같다. 첫째 이들은 연극에서 아이덴티티를 추구하고자 하였다는 점이다. 둘째는 기존의 공간언어에 구체적인 반기를 들어 그 모든 것들에 충격을 주어 파괴시킴으로써 인간내면의 강렬하고 즉각적인 폭발을 일으키는 연극을 창조하길 추구했다는 점이다. 그들은 스타니슬라브스키가 추구했던 연기를 초월해 연기는 새로운 인간을 이식시킨다기보다는 배우의 이면에 숨겨져 있는 자신을 개발하거나 가면을 벗기는 것이 필요하다는 인식에 도달해 배우의 첫 번째 과제는 자신을 두르고 있는 껍질을 벗겨 제거하는 것에 있다는 공통된 의지를 나타냈다. 그리하여 그들은 그들의 이상인 자신의 껍질을 벗기는 연기를 구체적으로 실현 할 수 있는 도구란 무엇인가에 대해 고심하게 되는데 그들은 결국 그 해답을 '즉흥연기'에서 찾았던 것이다. 그중 한 가지는 배우의 무의식세계를 자극하여 배우 내면에 숨겨져 있는 본능적인 정서를 분출시키자는 것이다.

• Journal of Periodontal and Implant Science
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• 제25권2호
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• pp.438-457
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• 1995

The origin of fibroblasts, their proliferative activity and roles in the early stages of periodontal regeneration were investigated in order to better understand the periodontal healing process in furcation defects of the beagle dog after guided tissue regeneration. Newly divided cells were identified and quantitated by immunolocalization of bromodeoxyuridine (BrdU) injected 1 hour prior to sacrificing the animals. The results were as follows :1. During periodontal healing in horizontal furcation defect, three different stages, namely the granulation tissue, connective tissue, and bone formation stages, were identified on the basis of major types of cells and tissue. 2. In the early stages of periodontal regeneration, both the remaining periodontal ligament and alveolar bone compartment were the major sources. 3. The majority of BrdU-labeled fibroblasts were located at the following areas ; 1) the coronal zone of the defect in case of the connective tissue fanned on the root surface. 2) the area within an 400 ${\mu}m$ distance from the remaining bone level in case of the periodontal ligament. 3) the area within an 100 ${\mu}m$ distance from the bone surface in case of areas of active bone formation.4. The highly proliferative fibroblasts adjacent to bone surface played a major role in the formation of osteoblast precursor cells, whereas both paravascular and endosteal cells played a minor role in new bone formation, In conclusion, it was suggested that the fibroblasts in the remaining periodontal ligament and bone will play a major role in periodontal regeneration, whereas both paravascular and endosteal cells will play a minor role in new bone formation.

• Journal of Microbiology and Biotechnology
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• 제28권10호
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• pp.1736-1748
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• 2018

Brucella abortus can survive and replicate within host macrophages, and great efforts have been made to demonstrate the genes involved in pathogenicity, such as internalization, in Brucella research. Here, intracellular responses were compared between THP-1 macrophage cells stimulated with B. abortus wild-type and four mutants (C1, C10, C27, and C32) using microarray to demonstrate the role of genes related to intracellular survival and replication. These mutants were generated by deleting genes encoding BAB_RS13225 (4-hydrobenzoate 3-monooxygenase, PHBH), BAB_RS00455 (heme exporter protein cytochrome C, CcmC), BAB_RS03675 (exopolyphosphatase, PPX), and BAB_RS13225 (peptidase M24). The results showed that mutants C1 and C10 induced significant suppression of survival levels and cytokine expression relative to wild-type in the THP-1 macrophage cells. These findings suggest that the BAB_RS13225 and BAB_RS00455 genes play important roles in survival within human macrophages. Conversely, mutants C27 and C32 induced significantly higher survival level than wild-type in the cells inhibiting cellular signal transduction. It is assumed that the BAB_RS03675 and BAB_RS13225 genes play a role in cellular resistance to B. abortus. Therefore, the disrupted genes are involved in B. abortus intracellular growth, and especially in its survival, and they could be effective targets for understanding the intracellular bacterium, B. abortus.

• 한국석유지질학회:학술대회논문집
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• 한국석유지질학회 2000년도 제7차 학술발표회 발표논문집
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• pp.57-72
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• 2000

The Murzuk Basin covers an area in excess of $350,000{\cal}km^2$, and is one of several intra-cratonic sag basins located on the Saharan Platform of North Africa. Compared with some of these basins, the Murzuk Basin has a relatively simple structure and stratigraphy, probably as a result of it's location on a the East Saharan Craton. The basin contains a sedimentary fill which reaches a thickness of about $4,000{\cal}m$ in the basin centre. This fill can be divided into a predominantly marine Paleozoic section, and a continental Mesozoic section. The principal hydrocarbon play consists of a glacial-marine sandstone reservoir of Cambro-Ordovician age, sourced and sealed by overlying Silurian shales. The present day borders of the basin are defined by tectonic uplifts, each of multi-phase generation, and the present day basin geometry bears little relation to the more extensive Early Palaeozoic sedimentary basin within which the reservoir and source rocks were deposited. The key to the understanding of the Cambro-Ordovician play is the relative timing of oil generation compared to the Cretaceous and Tertiary inversion tectonics which influenced source burial depth, reactivated faults and reorganised migration pathways. At the present day only a limited area of the basin centre remains within the oil generating window. Modelling of the timing and distribution of source rock maturity uses input data from AFTA and fluid inclusion studies to define palaeo temperatures, shale velocity work to estimate maximum burial depth and source rock geochemistry to define kinetics and pseudo-Ro. Migration pathways are investigated through structural analysis. The majority of the discovered fields and identified exploration prospects in the Murzuk Basin involve traps associated with high angle reverse faults. Extensional faulting occurred in the Cambro-Ordovician and this was followed by repeated compressional movements during Late Silurian, Late Carboniferous, Mid Cretaceous and Tertiary, each associated with regional uplift and erosion.