• 산업융합연구
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• 제20권5호
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• pp.69-76
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• 2022

본 연구에서는 스트리밍 기술에 대한 연구를 통해 각 플랫폼에서의 게임 영상의 특징과 기능을 정리했다. 게임 영상은 게임을 소재로 하여 마케팅과 게임플레이 방법 전파 등의 목적으로 게임콘텐츠 자체와 관계성이 높다. 영상 길이가 짧고 전파도 간편하다. 게임 영상 내용의 주된 유형은 게임 해설, 게임전략, 웃기기, 모방하기, 뮤직비디오, 게임 정보. 게임홍보동영상 기능 등으로 게임에 대한 직·간접적 홍보로서 제작자와 이용자에게 각각의 이유로 활용되어진다. 이 글은 게임 영상의 제작 주체와 제작 조건 등을 제작과정 중심으로 분석하였다. 제작 주체는 직업 창작자, 비 직업 창작자와 일반 사용자로 나뉘며, 게임 동영상 제작 동기는 주로 경제적 실리를 얻기 위해, 게임 영상 제작 방식은 게임 중 무작위로 생성되는 것과 사전 기획 후 촬영하는 것 두 가지다. 게임 동영상에 대한 실례를 통해 제작 과정을 추출 제시하였다.

• 한국농공학회논문집
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• 제64권5호
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• pp.9-16
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• 2022

Syngas, also known as synthesis gas, synthetic gas, or producer gas, is a combustible gas mixture generated when organic material (biomass) is heated in a gasifier with a limited airflow at a high temperature and elevated pressure. The present research was aimed at modifying the existing LPG engine generator for fully operated syngas. During this study, the designed gasifier-powered woodchip biomass was used for syngas production to generate power. A 6.0 kW LPG engine generator was modified and tested for operation on syngas. In the experiments, syngas and LPG fuels were tested as test fuels. For syngas production, 3 kg of dry woodchips were fed and burnt into the designed downdraft gasifier. The gasifier was connected to a blower coupled with a slider to help the air supply and control the ignition. The convection cooling system was connected to the syngas flow pipe for cooling the hot produce gas and filtering the impurities. For engine modification, a customized T-shaped flexible air/fuel mixture control device was designed for adjusting the correct stoichiometric air-fuel ratio ranging between 1:1.1 and 1.3 to match the combustion needs of the engine. The composition of produced syngas was analyzed using a gas analyzer and its composition was; 13~15 %, 10.2~13 %, 4.1~4.5 %, and 11.9~14.6 % for CO, H₂, CH₄, and CO₂ respectively with a heating value range of 4.12~5.01 MJ/Nm³. The maximum peak power output generated from syngas and LPG was recorded using a clamp-on power meter and found to be 3,689 watts and 5,001 watts, respectively. The results found from the experiment show that the LPG engine generator operated on syngas can be adopted with a de-ration rate of 73.78 % compared to its regular operating fuel.

• 한국항공우주학회지
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• 제50권9호
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• pp.647-655
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• 2022

러시아 정부는 세계 3위의 민간항공기 생산 강국을 목표로 민간항공기 제작기술 및 첨단 소재 확보를 위해 외국과 생산 제휴 등 전략적 협력을 확대하는 중이다. 또한 러시아 정부는 항공기 제작산업의 발전을 지원하고 항공 인증 조직을 개편하여 체계적인 항공안전 확보를 추구하고 항공제품 수출을 위한 국제협력과 인증활동에 많은 노력을 기울이고 있다. 국가 간에 민간항공기 안전 및 인증분야의 협력체계를 구축하기 위해서는 전반적인 인증시스템에 대한 상호간의 이해와 신뢰를 구축하는 과정이 요구된다. 따라서 본 연구에서 러시아의 항공기 인증조직, 법령체계, 인증절차를 분석하여 러시아의 항공기 인증체계에 대한 이해를 돕고자 하였다.

• 한국기록관리학회지
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• 제23권1호
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• pp.27-45
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• 2023

기록물의 출처는 기록관리에 있어 필수적이며 중요한 가치를 지닌다. 현대 공공기록물의 출처가 되는 행정조직은 잦은 개편으로 조직의 구성과 기능이 크게 변화한다. 특히 지방자치단체의 경우 이러한 조직의 변동이 빈번하며 시간이 지남에 따라 변동 가능성은 더 커진다. 공공기록물의 출처이자 생산자인 처리과는 기록물관리의 여러 업무를 담당하고 있지만, 그 자격 범위는 명확하지 않다. 본 연구는 이러한 기록물의 출처를 명확하게 하고 그에 대한 관리를 개선하는 방안을 제시하는 것을 목적으로 한다. 이를 위해 D광역지방자치단체를 대상으로 선정하고 행정조직의 변화가 어떠한 형태와 주기로 발생하고 변동되었는지에 대해 분석하였다. 특히 기록물의 출처로서 처리과가 조직개편에 따라 기능과 조직 구성이 변동된 사례를 분석하였다. 분석을 통해 행정조직과 처리과가 변동됨에 따라 발생할 수 있는 기록물 출처에 대한 문제점들을 파악하였으며 기록물의 출처 및 이력에 대한 관리를 개선하기 위한 방안을 제시하였다.

• Journal of Microbiology and Biotechnology
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• 제32권11호
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• pp.1416-1426
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• 2022

The need to discover new types of antimicrobial agents has grown since the emergence of antibiotic-resistant pathogens that threaten human health. The world's oceans, comprising complex niches of biodiversity, are a promising environment from which to extract new antibiotics-like compounds. In this study, we newly isolated Pseudomonas sp. NIBR-H-19 from the gut of the sea roach Ligia exotica and present both phenotypes and genomic information consisting of 6,184,379 bp in a single chromosome possessing a total of 5,644 protein-coding genes. Genomic analysis of the isolated species revealed that numerous genes involved in antimicrobial secondary metabolites are predicted throughout the whole genome. Moreover, our analysis showed that among twenty-five pathogenic bacteria, the growth of three pathogens, including Staphylococcus aureus, Streptococcus hominis and Rhodococcus equi, was significantly inhibited by the culture of Pseudomonas sp. NIBR-H-19. The characterization of marine microorganisms with biochemical assays and genomics tools will help uncover the biosynthesis and action mechanism of antimicrobial metabolites for development as antagonistic probiotics against fish pathogens in an aquatic culture system.

• 한국미생물·생명공학회지
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• 제50권3호
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• pp.319-327
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• 2022

γ-Aminobutyric acid (GABA) is a multi-functional compound with broad applications for food industry. GABA producing bacteria were isolated from cabbage kimchi. Among them, B737 was the best GABA producer when culture supernatants were analyzed by TLC. B737 was identified as Levilactobacillus brevis by 16S rRNA gene sequencing. Its glutamate decarboxylase (GAD) gene was cloned by PCR and the nucleotide sequence determined. B737 GAD consisting of 485 amino acids is the largest in size among GADs reported from LAB so far. gadB from L. brevis B737 was overexpressed in Escherichia. coli BL21(DE3) using pET26b(+).pET26b(+). The recombinant GAD was purified and its size was 55 kDa by SDS-PAGE. Maximum GAD activity was observed at pH 5 and 40℃ and the activity was dependent on pyridoxal 5'-phosphate. K_m and V_max of recombinant GAD were 6.2 ± 0.06 mM and 0.34 ± 0.002 mM/min, respectively. L. brevis B737 can be used as a starter for fermented foods with high GABA contents.

• 복식문화연구
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• 제31권2호
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• pp.141-160
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• 2023

Controlling fashion waste throughout the entire product lifecycle is critical in a circular economy. This study explored the possibility of establishing a public recycling system for fashion waste. Since consumer interests and participation are essential, theoretical research, social-text analysis, and quantitative research were conducted to identify consumers' perceptions of the public recycling of fashion waste and circular fashion. Data were collected via an online survey among women in their 20-30's living in Korea, and 304 samples were used for data analysis. The results were as follows. First, consumers' perceptions of recycling fashion waste were composed of recycling difficulty, the need for public recycling, and the need for EPR. Circular fashion perception comprised favor, environment protection, attractiveness, economics, quality and hygiene risks, and lack of diversity. Second, the reuse-recycle attitude and need for EPR affected the favor of all types of circular fashion products. Third, environmental concerns impacted attractiveness, and the favor significantly affected the purchase intention of all types of circular fashion products. In particular, quality and hygiene risk negatively affected the purchase intention of used-fashion products, while attractiveness positively impacted the purchase intention of upcycled-fashion products. The results implied that discussing the public recycling system of fashion waste and EPR policy is imperative. The results also showed the need to classify different types of circular fashion products, such as used, upcycled, and regenerated fashion items, to examine consumers' perceptions. In addition, the recycling of the fashion waste scale developed in this study could be used for further research.

• 한국포장학회지
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• 제29권2호
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• pp.129-138
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• 2023

The proportion of agricultural products handled through the Agricultural Products Processing Center (APC) is also steadily increasing every year, and in the case of Seongju Korean melon, a total of 10 APCs of Nonghyup and farming association corporations are in operation, and the distribution ratio is about 60% based on total production. In this study, Seongju Korean melon was selected as a target to analyze the environment load during carrying (production farm ~ APC) in the production area and the transport environment load during distribution of domestic fruits, and to analyze the environmental load for handling at APC. The vertical average vibration intensity (overall G_rms of 1~250 Hz) of truck transport measured at three transport routes from Seongju Korean melon producer ~ APC, Seongju ~ Seoul and Seongju ~ Jeju was about three times larger than that in the lateral direction and 4.5 times larger than that in the longitudinal direction, respectively. The frequency of occurrence of high-amplitude events (G) in the vertical direction compared to the measuring time was deeply related to pavement conditions in the order of unpaved farm-roads, concretepaved farm-roads, and asphalt-paved main-roads, but overall G_rms for the entire frequency band is believed to have a greater impact on vehicle traveling speed than road conditions. On the other hand, the difference in the size and direction of the vibration intensity measured by the forklift truck's main-body and the attachment (fork carrier) during handling at Seongju Korean melon APC was clear, and the vibration intensity of the forklift truck's main-body was largely affected by the stiffness of the fork and the mast according to the handling weight. Based on the field-data of the transport environment during domestic distribution measured through this study, it is believed that it is possible to develop a lab-based simulation protocol for appropriate packaging design.

• 한국산업정보학회논문지
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• 제15권3호
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• pp.23-32
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• 2010

U-헬스케어는 인간에게 많은 편의를 제공하고 건강을 지켜준다. 하지만 시설중심의 의료 환경이 환자 중심의 의료 환경으로 변함에 따라 다양한 문제점들이 발생되고 있다. 이 문제점들은 제도적인 문제부터 기술적인 문제, 생산자의 문제, 사용자의 문제에 이르기까지 다양한 원인에 의해 발생된다. 연구자는 이 문제들 가운데 사용자로부터 기인한 문제, 그 중에서도 특히 노인환자 또는 노인이 환자의 보호자인 경우에 관심을 가졌다. 주요 연구내용은 U-헬스케어 관련 기기들의 HMI 숙달훈련과 응급상황대처능력 훈련을 위한 학습용 기능성콘텐츠의 설계방향이다. 이는 노인의 인지심리학과 노인운동반응에 관한 연구로부터 출발하여 다양한 디지털 콘텐츠 형식들의 특성을 연관 짓는 과정을 거쳤다. 연구 결과는 가파른 성장세를 보일 노령인구와 그에 따른 U-헬스케어 산업분야에서 쓰임새를 가질 것으로 기대한다.