• Asian Journal of Innovation and Policy
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• 제12권3호
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• pp.345-362
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• 2023

As the widespread adoption and proliferation of electric vehicles continue, the secondary battery market is experiencing rapid growth. However, lithium-ion batteries, which constitute a majority of secondary batteries, present high risks of fire and explosion. Solid-state batteries are thus garnering attention as the next-generation batteries since they eliminate fire hazards and significantly reduce the risk of explosions. Against this background, the study aimed to analyze research trends and provide insights by examining 2,927 domestic papers related to solid-state batteries over the past decade (2013-2022). Specifically, we used topic modeling to extract major keywords associated with solid-state batteries research and to explore the network characteristics across major topics. The changes in research on solid-state batteries were analyzed in-depth by calculating topic dominance by year. The findings provide an overview of the emerging trends in domestic solid-state battery research, and might serve as a valuable reference in shaping long-term research directions.

• 전자통신동향분석
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• 제39권3호
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• pp.69-78
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• 2024

Cloud computing technology based on centralized high-performance computing has brought about major changes across the information technology industry and led to new paradigms. However, with the rapid development of the industry and increasing need for mass generation and real-time processing of data across various fields, centralized cloud computing is lagging behind the demand. This is particularly critical in emerging technologies such as autonomous driving, the metaverse, and augmented/virtual reality that require the provision of services with ultralow latency for real-time performance. To address existing limitations, distributed and edge cloud computing technologies have recently gained attention. These technologies allow for data to be processed and analyzed closer to their point of generation, substantially reducing the response times and optimizing the network bandwidth usage. We describe distributed and edge cloud computing technologies and explore the latest trends in their standardization.

• 항공우주산업기술동향
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• 제8권2호
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• pp.76-85
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• 2010

본 논문에서는 우주환경에 사용되는 광섬유자이로(FOG)의 최근 개발동향에 대해 기술하고자 한다. 광섬유자이로는 샤냑효과를 이용하여 각속도를 측정하는 장치로 링레이저자이로(RLG)에 비해 짧은 개발역사를 가지고 있지만, 관련 소자 및 신호처리 방법의 발전으로 인해 고성능의 우주용 관성항법장치로 링레이저자이로를 대체하기에 충분한 것으로 알려져 왔다. 본 논문에서는 광섬유자이로의 개발동향을 현재까지 개발된 광섬유자이로 제품을 바탕으로 각각의 성능과 특징에 대해 알아보고, 앞으로 고성능 우주용 관성항법장치로서의 광섬유자이로의 발전 방향에 대해 살펴보기로 한다.

• 한국농촌간호학회지
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• 제17권1호
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• pp.9-22
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• 2022

Purpose: This study was conducted to suggest the direction of follow-up research by comparing and analyzing studies related to emerging infectious diseases (EID) in the field of nursing published in Korea since 2000 and before the outbreak of COVID-19 to identify overall themes and trends. Methods: The data search period was limited to papers from 2000 to 2019, and a literature review was conducted through a domestic DB search. 1574 papers extracted through search terms were excluded according to the criteria, and the final 39 papers were selected and analyzed. Results: Nursing studies related to EID consisted of 35 quantitative studies and most of them were descriptive research studies. As for specific disease types, MERS accounted for the largest number with 22, followed by 11 influenza A, 4 EID and 2 SARS. Nurses were the most common subjects with 19 cases (48.7%), and the number of study subjects was 200 or more, 23 cases (59.0%). The outcome variables of the analysis target literature were infection prevention behavior performance, knowledge, attitude, stress, anxiety, nursing intention, and infection control. Conclusion: This study is meaningful in suggesting the direction of follow-up research by identifying the trends in EID research.

• 한국전기전자재료학회논문지
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• 제36권3호
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• pp.214-225
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• 2023

Piezoelectric actuators, which utilize piezoelectric crystals or ceramics, are commonly used in precision positioning applications, offering high-speed response and precise control. However, the use of low-performance ceramics and expensive single crystals is limiting their versatile use in the actuator market, necessitating the development of both high-performance and cost-effective piezoelectric materials capable of delivering higher forces and displacements. The use of textured Pb (lead)-based piezoelectric ceramics formed by so-called templated grain growth method has been identified as a promising strategy to address the performance and cost issue. This review article provides insights into recent advances in texturing Pb-based piezoelectric ceramics for improved performance in actuation applications. We discussed the relevant issues in detail focusing on current challenges and emerging trends in the textured piezoelectric ceramics for their reliability and performance in actuator applications. We discussed in detail focusing on current challenges and emerging trends of textured piezoelectric ceramics for their reliability and performance in actuator applications. In conclusion, the article provides an outlook on the future direction of textured piezoelectric ceramics in actuator applications, highlighting the potential for further success in this field.

• 한국융합학회논문지
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• 제8권12호
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• pp.307-315
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• 2017

본 연구는 우리나라 석유화학산업의 미래 전략 수립을 목적으로 미래이슈 발굴을 위한 탐색적 프로세스와 분석을 진행하였다. 연구방법으로서 문헌조사와 함께 STEPPER 분석기법을 활용하여 국내 업계, 학계, 연구계 등 대표적인 전문가들을 대상으로 심층적인 설문조사를 병행함으로써 융합적 시각에서 한국 석유화학산업의 이머징 이슈를 도출했다. 또한 2040년까지 새롭게 떠오르고 있는 트렌드와 이머징 이슈들을 미래이슈분석기법과 전문가 인터뷰를 통해 추출하였다. 이를 통해 미래에도 적용 가능한 변화요인으로서 국제유가 변화, 중국경제 전망, 그리고 미래핵심소재 개발 등 3개 요인들을 확정하였다. 향후 이러한 연구 프로세스를 기반으로 석유화학산업 뿐만 아니라 철강, 자동차, 조선 등 다양한 산업의 미래 시나리오 전략을 위한 연구가 가능할 것이다.

• Journal of Microbiology and Biotechnology
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• 제27권12호
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• pp.2075-2088
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• 2017

Salmonella is one of the principal causes of foodborne outbreaks. As traditional control methods have shown less efficacy against emerging Salmonella serotypes or antimicrobial-resistant Salmonella, new approaches have been attempted. The use of lytic phages for the biocontrol of Salmonella in the food industry has become an attractive method owing to the many advantages offered by the use of phages as biocontrol agents. Phages are natural alternatives to traditional antimicrobial agents; they have proven effective in the control of bacterial pathogens in the food industry, which has led to the development of different phage products. The treatment with specific phages in the food industry can prevent the decay of products and the spread of bacterial diseases, and ultimately promotes safe environments for animal and plant food production, processing, and handling. After an extensive investigation of the current literature, this review focuses predominantly on the efficacy of phages for the successful control of Salmonella spp. in foods. This review also addresses the current knowledge on the pathogenic characteristics of Salmonella, the prevalence of emerging Salmonella outbreaks, the isolation and characterization of Salmonella-specific phages, the effectiveness of Salmonella-specific phages as biocontrol agents, and the prospective use of Salmonella-specific phages in the food industry.

• 한국대기환경학회지
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• 제7권2호
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• pp.119-126
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• 1991

Air pollution is directly and indirectly associated with the toxicology through the increase of mortality, the decrease of oviposition rate, and the decline of insect population, as well as the disruption of equilibria with higher or lower trophic levels. To investigate intrinsic decrease rates, oviposition period, and emerging rates of pupae of house fly under air pollution stresses, healthy individuals of Musca domestica L. were collected in the field, cultured in the laboratory for 2 $\sim$ 3 generations, and artificially exposed to $O_3 (4 ppm) in automatically controlled air pollutant fumigation chambers. Results from this study are summarized as follows: 1. Survivorship curves of both control group and exposed groups of healthy house fly to 4 ppm $O_3$ have linearly or stair-like decreasing trends of revers S-shape. 2. For cohorts exposed to 4 ppm of $O_3$, intrinsic decrease rate of cohort exposed for 2 hours significantly increases compared to that of control group, slight increases were observed for those exposed for 4 hours and 8 hours, which shows no distinct relationships between exposure period and intrinsic decrease rate. 3. While the numbers of pupae of exposed cohorts increase with the increase of exposure period, emerging rate shows a distinct decrease. 4. The relationships between emerging rate (E) of pupae and the exposure period (T) for cohorts exposed to 4 ppm of $O_3$ are expressed with the equation, E (%)=21.027 - 7.942 ln (T).

• ETRI Journal
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• 제40권6호
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• pp.745-758
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• 2018

A wide range of studies in various disciplines has focused on the Internet of Things (IoT) and cyber-physical systems (CPS). However, it is necessary to summarize the current status and to establish future directions because each study has its own individual goals independent of the completion of all IoT applications. The absence of a comprehensive understanding of IoT and CPS has disrupted an efficient resource allocation. To assess changes in the knowledge structure and emerging technologies, this study explores the dynamic research trends in IoT by analyzing bibliographic data. We retrieved 54,237 keywords in 12,600 IoT studies from the Scopus database, and conducted keyword frequency, co-occurrence, and growth-rate analyses. The analysis results reveal how IoT technologies have been developed and how they are connected to each other. We also show that such technologies have diverged and converged simultaneously, and that the emerging keywords of trust, smart home, cloud, authentication, context-aware, and big data have been extracted. We also unveil that the CPS is directly involved in network, security, management, cloud, big data, system, industry, architecture, and the Internet.

• 가정과삶의질연구
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• 제24권1호
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• pp.299-313
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• 2006

Male consumers, who had largely been overlooked in comparison to their female counterparts, are recently emerging as a major target of marketing. The five-day workweek system and shifts in the expectation of traditional sex roles have brought about this change. This study examined changes in consumption pattems of men and analyzed relevant trends and meanings. Advertisements were chosen as data for analyses in this study because they are the most fundamental tool to stimulate consumption and also because they are the media that convey the culture of the times in the most compressed form. One thousand four hundred and seven advertisements appeared in the 19 volumes of 'Gentlemen's Quarterly,' a men's magazine, that were published between March 2001 and October 2005. These advertisements were analyzed using both quantitative and qualitative methods. From the analyses of this study, six different kinds of trends were found. In each trend, important values sought after by men through consumption, and the meanings of consumption for male consumers were explained.