• 제목/요약/키워드: evolution strategies

검색결과 255건 처리시간 0.027초

바이오필릭 디자인의 관점에서 본 경복궁의 전망과 은신처 분석 (Characteristics of Prospect and Refuge in Gyeongbokgung Palace focusing on the Biophilic Design)

  • 황지현;이현수
    • 한국실내디자인학회논문집
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    • 제24권5호
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    • pp.3-11
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    • 2015
  • The human instinct toward nature is biophilia as a psychological term. There have been a number of empirical evidences confirmed that natural features in buildings enhance human's comfort focusing on biophilia. However, the evolution of society, science, and industry has separated modern buildings from nature. Therefore, this paper addresses the assumption that the admiration for historical buildings in contemporary society is attribute to the qualities of biophilic design. Prospect and refuge, one of the strategies for biophilic design, ultimately provides the opportunity to recover from stress and tension. The purpose of this study is to figure out elements of prospect and refuge based on the design theory of biophilia for psychological healing. This study explores the Gyeongbokgung Palace with the design elements of prospect and refuge in biophilia. It also measures these elements quantitatively with the contrast using Adobe Photoshop CS6, and the area ratio of prospect and refuge. The results of this research verify that the conflicting characteristics of prospect and refuge are identified simultaneously, it is significant to attract people. Gangnyeongjeon Hall and Gyotaejeon Hall, the living quarters for the king and queen, propose the intense pattern of refuge characteristics more than other areas. The mathematical properties of the area ratio show that the pattern of prospect-refuge characteristics change in particular design elements.

Study of US/EU National Innovation Policies Based on Nanotechnology Development, and Implications for Korea

  • Lim, Jung Sun;Shin, Kwang Min;Yoon, Jin Seon;Bae, Seoung Hun
    • Journal of Information Science Theory and Practice
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    • 제3권1호
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    • pp.50-65
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    • 2015
  • Recently US/EU governments are utilizing nanotechnology as a key catalyst to support national innovation policies with economic recovery goals. US/EU nano policies have been serving as a global model to various countries, including Korea. So the authors initially seek to understand US/EU national innovation policy interconnections, and then find the role of nanotechnology development within. To strengthen national policy coherence, nanotechnology development strategies are under evolution as an innovation catalyst for promoting commercialization. To strategically support nano commercialization, EHS (Environmental, Health, Safety) and informatics are invested as priority fields to strengthen social acceptance and sustainability of nano enabled products. The current study explores US/EU national innovation policies including nano commercialization, EHS, and Informatics. Then obtained results are utilized to analyze weaknesses of Korean innovation systems of connecting creative economy and nanotechnology development policies. Then ongoing improvements are summarized focusing on EHS and informatics, which are currently prominent issues in international nanotechnology development.

EVOLUTION OF NUCLEAR FUEL MANAGEMENT AND REACTOR OPERATIONAL AID TOOLS

  • TURINSKY PAUL J.;KELLER PAUL M.;ABDEL-KHALIK HANY S.
    • Nuclear Engineering and Technology
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    • 제37권1호
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    • pp.79-90
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    • 2005
  • In this paper are reviewed the current status of nuclear fuel management and reactor operational aid tools. In addition, we indicate deficiencies in current capabilities and what future research is judged warranted. For the nuclear fuel management review the focus is on light water reactors and the utilization of stochastic optimization methods applied to the lattice, fuel bundle, core loading pattern, and for BWRs the control rod pattern/core flow design decision making problems. Significant progress in addressing separately each of these design problems on a single cycle basis is noted; however, the outstanding challenge of addressing the integrated design problem over multiple cycles under conditions of uncertainty remains to be addressed. For the reactor operational aid tools review the focus is on core simulators, used to both process core instrumentation signals and as an operator aid to predict future core behaviors under various operational strategies. After briefly reviewing the current status of capabilities, a more in depth review of adaptive core simulation capabilities, where core simulator input data are adjusted within their known uncertainties to improved agreement between prediction and measurement, is presented. This is done in support of the belief that further development of adaptive core simulation capabilities is required to further significantly advance the utility of core simulators in support of reactor operational aid tools.

Development and Characterization of 10 Polymorphic Microsatellite Loci in the Korean Endemic Freshwater Fish Iksookimia koreensis, and Their Cross-species Amplification in the Endemic I. longicorpa

  • Kwan, Ye-Seul;Kim, Hyo-Jin;Lee, Bit-Na;Won, Yong-Jin
    • Animal Systematics, Evolution and Diversity
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    • 제33권2호
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    • pp.136-139
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    • 2017
  • The genus Iksookimia (Actinopterygii: Cypriniformes: Cobitidae) is a bottom-dwelling freshwater loaches, which are well-known as their endemism and high geographic variation. However, population genetic relationships among Iksookimia spp. have remained unclear due to a shortage of genetic markers that can be applied generally in the genus. Here, we developed high-resolving microsatellite markers using I. koreensis and I. longicorpa as representatives of Iksookimia species because of their wide distribution range and phylogenetic position. Ten of polymorphic microsatellite loci were isolated from Iksookimia koreensis and were successfully cross-amplified in I. longicorpa. The mean number of observed alleles per locus was about 10.4 (range, 2-17) for I. koreensis and about 13.2 (range, 2-24) for I. longicorpa. The loci, IK03 and IK08, deviated from the Hardy-Weinberg equilibrium in I. koreensis, after applying the Bonferroni correction. The microsatellite markers obtained in the present study will be useful to evaluate population genetic structure and to establish conservation strategies for I. koreensis and related Iksookimia species.

Single-Cell Toolkits Opening a New Era for Cell Engineering

  • Lee, Sean;Kim, Jireh;Park, Jong-Eun
    • Molecules and Cells
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    • 제44권3호
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    • pp.127-135
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    • 2021
  • Since the introduction of RNA sequencing (RNA-seq) as a high-throughput mRNA expression analysis tool, this procedure has been increasingly implemented to identify cell-level transcriptome changes in a myriad of model systems. However, early methods processed cell samples in bulk, and therefore the unique transcriptomic patterns of individual cells would be lost due to data averaging. Nonetheless, the recent and continuous development of new single-cell RNA sequencing (scRNA-seq) toolkits has enabled researchers to compare transcriptomes at a single-cell resolution, thus facilitating the analysis of individual cellular features and a deeper understanding of cellular functions. Nonetheless, the rapid evolution of high throughput single-cell "omics" tools has created the need for effective hypothesis verification strategies. Particularly, this issue could be addressed by coupling cell engineering techniques with single-cell sequencing. This approach has been successfully employed to gain further insights into disease pathogenesis and the dynamics of differentiation trajectories. Therefore, this review will discuss the current status of cell engineering toolkits and their contributions to single-cell and genome-wide data collection and analyses.

Genetic Diversity of Orobanche cumana Populations in Serbia

  • Ivanovic, Zarko;Marisavljevic, Dragana;Marinkovic, Radovan;Mitrovic, Petar;Blagojevic, Jovana;Nikolic, Ivan;Pavlovic, Danijela
    • The Plant Pathology Journal
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    • 제37권6호
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    • pp.512-520
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    • 2021
  • In this study, we report genetic characterization of Orobanche cumana, the causal agent of sunflower wilting in Serbia. The genetic diversity of this parasitic plant in Serbia was not studied before. Random amplified polymorphic DNA (RAPD) markers and partial rbcL gene sequences analysis were used to characterize the O. cumana populations at the molecular level. While phylogenetic analyses of RAPD-PCR amplicons were performed using unweighted pair-group Method analyses, rbcL gene sequences were analyzed using neigbor joining method and minimum spanning tree. Molecular analyses of RAPD-PCR analysis revealed high genetic diversity of O. cumana populations which indicated high adaptive potential of this parasitic weed in Serbia. Further analyses of rbcL gene using minimum spanning tree revealed clear differences among diverse sections of Orobanche genus. Although this molecular marker lacked the resolution to display intrapopulation diversity it could be a useful tool for understanding the evolution of this parasitic plant. Our results suggested that O. cumana has great genetic potential which can lead to differentiation of more virulent races which is important for determining crop breeding strategies for their control.

Analyzing Technological Trends of Smart Factory using Topic Modeling

  • Hussain, Adnan;Kim, Chulhyun;Battsengel, Ganchimeg;Jeon, Jeonghwan
    • Asian Journal of Innovation and Policy
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    • 제10권3호
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    • pp.380-403
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    • 2021
  • Recently, smart factories have gained significant importance since the development of the fourth industrial revolution and the rise of global industrial competition. Therefore, the industries' survival to meet the global market trends requires accurate technological planning. Although, different works are available to investigate forecasting technologies and their influence on the smart factory. However, little significant work is available yet on the analysis of technological trends concerning the smart factory, which is the core focus herein. This work was performed to analyze the technological trends of the smart factory, followed by a detailed investigation of recent research hotspots/frontiers in the field. A well-known topic modeling technique, namely Latent Dirichlet Allocation (LDA), was employed for this study described above. The technological trends were further strengthened with the in-depth analysis of a smart factory-based case study. The findings produced the technological trends which possess significant potential in determining the technological strategies. Moreover, the results of this work may be helpful for researchers and enterprises in forecasting and planning future technological evolution.

사이버 물리 전력 시스템에 대한 허위 데이터 주입 공격에 관한 고찰 (An Overview of False Data Injection Attack Against Cyber Physical Power System)

  • 배준형
    • 전기전자학회논문지
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    • 제26권3호
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    • pp.389-395
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    • 2022
  • 기술의 진화와 함께, 사이버 물리 시스템(Cyber Physical System)은 향상되고 있고 이에 따라 새로운 유형의 사이버 공격도 발견되고 있다. 사이버 공격에는 여러 가지 형태가 있으며 모든 사이버 공격은 대상 시스템을 조작하기 위해 이루어진다. 사이버 물리시스템 중 대표적인 시스템이 사이버 물리 전력 시스템, 즉 스마트 그리드이다. 스마트 그리드는 신뢰할 수 있고 안전하며 효율적인 에너지 전송 및 분배를 제공하는 새로운 유형의 전력망이다. 본 논문에서는 스마트 그리드의 상태 추정과 에너지 분배를 타깃으로 하는 허위 데이터 주입 공격(False Data Injection Attack)으로 잘 알려진 특정 유형의 사이버 공격 구성 방법과 이러한 공격의 방어를 위한 보호 전략과 탐지를 위한 동적 모니터링 기법을 소개한다.

Arsenic Detoxification by As(III)-Oxidizing Bacteria: A Proposition for Sustainable Environmental Management

  • Shamayita Basu;Samir Kumar Mukherjee;Sk Tofajjen Hossain
    • 한국미생물·생명공학회지
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    • 제51권1호
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    • pp.1-9
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    • 2023
  • Arsenic (As), which is ubiquitous throughout the environment, represents a major environmental threat at higher concentration and poses a global public health concern in certain geographic areas. Most of the conventional arsenic remediation techniques that are currently in use have certain limitations. This situation necessitates a potential remediation strategy, and in this regard bioremediation technology is increasingly important. Being the oldest representativse of life on Earth, microbes have developed various strategies to cope with hostile environments containing different toxic metals or metalloids including As. Such conditions prompted the evolution of numerous genetic systems that have enabled many microbes to utilize this metalloid in their metabolic activities. Therefore, within a certain scope bacterial isolates could be helpful for sustainable management of As-contamination. Research interest in microbial As(III) oxidation has increased recently, as oxidation of As(III) to less hazardous As(V) is viewed as a strategy to ameliorate its adverse impact. In this review, the novelty of As(III) oxidation is highlighted and the implication of As(III)-oxidizing microbes in environmental management and their prospects are also discussed. Moreover, future exploitation of As(III)-oxidizing bacteria, as potential plant growth-promoting bacteria, may add agronomic importance to their widespread utilization in managing soil quality and yield output of major field crops, in addition to reducing As accumulation and toxicity in crops.

Impacts of temperature variations on soil organic carbon and respiration at soil erosion and deposition areas

  • Thet Nway Nyein;Dong Kook Woo
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2023년도 학술발표회
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    • pp.447-447
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    • 2023
  • Soil organic carbon (SOC) is a critical indicator of soil fertility. Its importance in maintaining ecological balance has received widespread attention. However, global temperatures have risen by 0.8℃ since the late 1800s due to human-induced greenhouse gas emissions, resulting in severe disruptions in SOC dynamics. To study the impacts of temperature variations on SOC and soil respiration, we used the Soil Carbon and Landscape co-Evolution (SCALE) model, which was capable of estimating the spatial distribution of soil carbon dynamics. The study site was located at Heshan Farm (125°20'10.5"E, 49°00'23.1"N), Nenjiang County in Heilongjiang Province, Northeast China. We validated the model using observed soil organic carbon and soil respiration in 2015 and achieved excellent agreement between observed and modeled variables. Our results showed considerable influences of temperature increases on SOC and soil respiration rates at both erosion and deposition areas. In particular, changes in SOC and soil respiration at the deposition area were greater than at the erosion area. Our study highlights that the impacts of temperature elevations are considerably dependent on soil erosion and deposition processes. Thus, it is important to implement effective soil conservation strategies to maintain soil fertility under global warming.

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