• Title/Summary/Keyword: trends

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CPU Technology and Future Semiconductor Industry (I) (CPU 기술과 미래 반도체 산업 (I))

  • Park, Sahnggi
    • Electronics and Telecommunications Trends
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    • v.35 no.2
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    • pp.89-103
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    • 2020
  • Knowledge of the technology, characteristics, and market trends of the latest CPUs used in smartphones, computers, and supercomputers and the research trends of leading US university experts gives an edge to policy-makers, business executives, large investors, etc. To this end, we describe three topics in detail at a level that can help educate the non-majors to the extent possible. Topic 1 comprises the design and manufacture of a CPU and the technology and trends of the smartphone SoC. Topic 2 comprises the technology and trends of the x86 CPU and supercomputer, and Topic 3 involves an optical network chip that has the potential to emerge as a major semiconductor chip. We also describe three techniques and experiments that can be used to implement the optical network chip.

CPU Technology and Future Semiconductor Industry (III) (CPU 기술과 미래 반도체 산업 (III))

  • Park, Sahnggi
    • Electronics and Telecommunications Trends
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    • v.35 no.2
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    • pp.120-136
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    • 2020
  • Knowledge of the technology, characteristics, and market trends of the latest CPUs used in smartphones, computers, and supercomputers and the research trends of leading US university experts gives an edge to policy-makers, business executives, large investors, etc. To this end, we describe three topics in detail at a level that can help educate the non-majors to the extent possible. Topic 1 comprises the design and manufacture of a CPU and the technology and trends of the smartphone SoC. Topic 2 comprises the technology and trends of the x86 CPU and supercomputer, and Topic 3 involves an optical network chip that has the potential to emerge as a major semiconductor chip. We also describe three techniques and experiments that can be used to implement the optical network chip.

CPU Technology and Future Semiconductor Industry (II) (CPU 기술과 미래 반도체 산업 (II))

  • Park, Sahnggi
    • Electronics and Telecommunications Trends
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    • v.35 no.2
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    • pp.104-119
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    • 2020
  • Knowledge of the technology, characteristics, and market trends of the latest CPUs used in smartphones, computers, and supercomputers and the research trends of leading US university experts gives an edge to policy-makers, business executives, large investors, etc. To this end, we describe three topics in detail at a level that can help educate the non-majors to the extent possible. Topic 1 comprises the design and manufacture of a CPU and the technology and trends of the smartphone SoC. Topic 2 comprises the technology and trends of the x86 CPU and supercomputer, and Topic 3 involves an optical network chip that has the potential to emerge as a major semiconductor chip. We also describe three techniques and experiments that can be used to implement the optical network chip.

An analysis of the End-User electric power consumption trends using the load curve during international conflict (수용가 부하곡선을 일용한 국제분쟁시 전력사용 행태분석)

  • Son Hak Sig;Kim In Su;Park Yong Uk;Im Sang Kug;Kim Jae Chul
    • Proceedings of the KIEE Conference
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    • pp.165-167
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    • 2004
  • End-user electric power consumption trends shows various load curves dependant on industry, contract, season, day and time. Analysis of end-user electric power consumption trends has a key role to efficiently meet electricity demand. There are several factors of change in electricity demand such as the change of weather, international conflict, and industrial trends during summer. This paper has analyzed the analysis the end-user electric power consumption trends using the load curve during international conflict. We observed that international conflict decreased electric demand by $5.4\%$. This increase is not significant, and therefore we conclude that the international conflict has not greatly affected Korea's electricity demands. This paper provides useful information so as to mon: efficiently perform demand side management.

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A Study on the NOx Emission Characteristics of Coaxial Jet Flames;Comparison of $H_2/CH_4$ Flame (동축 분류 화염의 NOx 배출 특성에 관한 연구;수소/메탄 화염 비교)

  • Bae, Dong-Kyu;Kim, Jong-Hyun;Lee, Chang-Eon
    • 한국연소학회:학술대회논문집
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    • pp.147-155
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    • 2001
  • The NOx emission characteristics of jet flames fueled with $H_2$ and $CH_4$ were studied. Experimental and numerical investigations were carried out for various flames with varying equivalence ratio, fuel flow rate and nozzle diameter. The Emission indices of NOx(EINOx) were measured by chemiluminescent method and calculated by simulation using detailed chemistry. The results show that EINOx of $CH_4$ and $H_2$ flames have different trends in terms of equivalence ratio and fuel flow rate but have the same trends in terms of nozzle diameter. These differences can be explained by the following Thermal and Prompt trends in both flames. Thermal EINOx trends can be describe in function of residence time in the high-temperature region weighted by the maximum flame temperature and Prompt EINOx trends can be described in function of flame surface area of each combustion conditions.

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The Influence of Sustainability and Social Responsibility on Fashion Trends

  • Kim, Eun-Deok
    • International Journal of Costume and Fashion
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    • v.10 no.2
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    • pp.61-71
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    • 2010
  • The purpose of this study was first, to examine the causes for the recent acceleration in the increase of textile/apparel waste and the current practices for reducing waste in the global textile and apparel industry; and second, to explore the influence of sustainability and social responsibility on fashion trends. Extensive literature on sustainable apparel and sustainable and socially responsible practices by global textile and apparel firms was reviewed in conducting this research. First, an accelerated fashion diffosion speed due to fast fashion was focused on as a cause for the increase in textile/apparel waste whereas mass customization was focused on as a potential solution for reducing waste. Then, the influence of the social trend toward sustainability and social responsibility on fashion trends was discussed, particularly the trends toward green products and recycled fashion, the trend against using real for or leather, and minimum-fabric-waste fashion in design and product development. This study furthers consumers' understanding of sustainability and social responsibility related to fashion trends and hopefully increases their consciousness in becoming socially responsible consumers. This study will also contribute to better decision-making in apparel and textile firms to produce sustainable fashion products.

An Analysis of Research Trends in Domestic Articles on Preschooler Peer Relationships(1995-2009) : Focusing on Research Methods (유아 또래관계 관련 국내 학술지 논문의 연구동향 분석 : 연구방법을 중심으로(1995년~2009년))

  • Kim, Youn-Hee
    • Korean Journal of Child Studies
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    • v.31 no.5
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    • pp.131-149
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    • 2010
  • The purpose of this study was to examine research trends in articles of preschooler peer relationships carried in domestic academic journals. This was done in an attempt to suggest alternative directions for peer relationship studies in the early childhood education sector and lay the foundation for future studies. 131 articles that appeared in seven domestic academic journals related to early childhood education were selected and analyzed in order to better understand the general trends in the filed and the specific trends in terms of their content and methods. Our results indicate that the observation method was most common in the quantitative studies, and participant observation was most prevailent among qualitative studies. As for instrumentation, international instruments were most widely utilized, and the most dominant analysis method was descriptive statistics. In terms of reliability, internal consistency was checked most often, however, the majority of the studies failed to provide any information on validity and post-hoc analysis.

Multi-cloud Technology Introduction and Research Trends (멀티 클라우드 기술 개요 및 연구 동향)

  • Kim, B.S.;Jung, Y.W.;Oh, B.T.;Kim, S.Y.;Son, S.;Seo, J.H.;Bae, S.J.;Lee, G.C.;Kang, D.J.
    • Electronics and Telecommunications Trends
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    • v.35 no.3
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    • pp.45-54
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    • 2020
  • The cloud computing industry has focused on establishing a cloud-based business environment for enterprises with efforts to convert using their own on-premise computing infrastructures to using cloud services. With these efforts, using cloud services has become natural, especially for the IT industry. The cloud computing industry is moving toward proliferation of the cloud computing environment into various evolving industries. Along with industrial trends, new technical trends such as edge computing and multi-cloud are emerging. These trends are expected to create new business models and develop related service ecosystems, providing new opportunities for service providers and new experiences for users. A mong those emerging technologies, multi-cloud technology is expected to realize unlimited global cloud computing resources by unifying cloud resources from multiple public cloud service providers. In this paper, we introduce the concept and related trends of multi-cloud technology. Subsequently, we analyze the main functionalities and several use cases of multi-cloud technology. Finally, we summarize the effects and usefulness of multi-cloud technology in the domestic cloud industry.

Research Trends of Cognitive Systems Engineering Approaches to Human Error and Accident Modelling in Complex Systems (복잡한 시스템에서의 인적오류 및 사고모형의 인지시스템공학적 연구의 동향)

  • Ham, Dong-Han
    • Journal of the Ergonomics Society of Korea
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    • v.30 no.1
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    • pp.41-53
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    • 2011
  • Objective: The purpose of this paper is to introduce new research trends of human error and accident modeling and to suggest future promising research directions in those areas. Background: Various methods and techniques have been developed to understand the nature of human errors, to classify them, to analyze their causes, to prevent their negative effects, and to use their concepts during design process. However, it has been reported that they are impractical and ineffective for modern complex systems, and new research approaches are needed to secure the safety of those systems. Method: Six different perspectives to study human error and system safety are explained, and then seven recent research trends are introduced in relation to the six perspectives. The implications of the new research trends and viable research directions based on them are discussed from a cognitive systems engineering point of view. Results: Traditional methods for analyzing human errors and identifying causes of accidents have critical limitations in complex systems, and recent research trends seem to provide some insights and clues for overcoming them. Conclusion: Recent research trends of human error and accident modeling emphasize different concepts and viewpoints, which include systems thinking, sociotechnical perspective, ecological modelling, system resilience, and safety culture. Application: The research topics explained in this paper will help researchers to establish future research programmes.

Characteristics and Trends of Tropical Night Occurrence in South Korea for Recent 50 Years (1958-2007) (우리나라에서 최근 50년 (1958-2007)간 열대야 발생 특성 및 변화 경향)

  • Park, Woo-Sun;Suh, Myoung-Seok
    • Atmosphere
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    • v.21 no.4
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    • pp.361-371
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    • 2011
  • In this study, characteristics and trends of tropical night (TN) are investigated by using the KMA 14 observation data for the recent 50 years (1958-2007) over South Korea. The TN is defined as a day with a daily minimum temperature exceeds the absolute threshold temperature ($25^{\circ}C$), and the relative deviation from normal temperature, 95th percentile of all observed daily minimum temperature. Although the spatial distribution of TN occurrence depends on the choice of the definitions, the frequency of TN shows strong spatial and interannual variations with the minimum at high land area (Chupungnyeong and wet years) and maximum at southern coastal area and large city area (Jeju, Busan, Seoul, Daegu). Most of TN occurs in August (56%) and July (41%), and the duration date of TN is proportional to the frequency of TN without regard to the definition method. In general, increasing trends are found in the TN time series without regard to the analysis method, but the trends are clearly depending on the analysis period and geographic locations. Decreasing trends are prominent during the most of analysis period, especially until the mid of 1990, whereas strong increasing trends are found during recent 30 years (1988-2007), especially at Jeju, Ulsan, Daegu and Pohang. Also the severity of TN is significantly increased in recent years.