• Title/Summary/Keyword: Technological evolution

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Study of the Rheological Properties of a Fermentation Broth of the Fungus Beauveria bassiana in a Bioreactor Under Different Hydrodynamic Conditions

  • Nunez-Ramirez, Diola Marina;Medina-Torres, Luis;Valencia-Lopez, Jose Javier;Calderas, Fausto;Lopez-Miranda, Javier;Medrano-Roldan, Hiram;Solis-Soto, Aquiles
    • Journal of Microbiology and Biotechnology
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    • v.22 no.11
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    • pp.1494-1500
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    • 2012
  • Fermentation with filamentous fungi in a bioreactor is a complex dynamic process that is affected by flow conditions and the evolution of the rheological properties of the medium. These properties are mainly affected by the biomass concentration and the morphology of the fungus. In this work, the rheological properties of a fermentation with the fungus Beauveria bassiana under different hydrodynamic conditions were studied and the rheological behavior of this broth was simulated through a mixture of carboxymethyl cellulose sodium and cellulose fibers (CMCNa-SF). The bioreactor was a 10 L CSTR tank operated at different stir velocities. Rheological results were similar at 100 and 300 rpm for both systems. However, there was a significant increase in the viscosity accompanied by a change in the consistence index, calculated according to the power law model, for both systems at 800 rpm. The systems exhibited shear-thinning behavior at all stir velocities, which was determined with the power law model. The mixing time was observed to increase as the cellulose content in the system increased and, consequently, the efficiency of mixing diminished. These results are thought to be due to the rheological and morphological similarities of the two fungal systems. These results will help in the optimization of scale-up production of these fungi.

A Study on Stages of Development of Corporate Family-Friendly Policies and Programs (일-가족 조화를 위한 가족친화적 기업정책의 발달단계에 관한 연구)

  • Choi Sung-Il;Yoo Gye-Sook
    • Journal of Families and Better Life
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    • v.24 no.4 s.82
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    • pp.51-73
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    • 2006
  • The purpose of this study is to introduce the evolution of corporate family-friendly policies and programs, a recent business issue throughout the world. In addition, this study suggests implications for a corporate reference guide to work-family policies and programs by providing a comparative analysis of the typical stages of development of U.S. corporate family-friendly policies and programs, and by presenting model initiatives of Korean and American family-friendly companies. Just as technological changes at the time of the Industrial Revolution altered the relationship between workers and their work, more recent technological advances have again transformed this relationship, offering the promise of a society in which work demands a smaller portion of the worker's time and permitting the worker more freedom and control over work conditions. These new work arrangements have the promise of producing a new paradigm for work and family, based on which many industrialized nations have developed family-friendly policies already. Family-friendly policies and programs can be grouped into four discernable stages in the evolution of a corporate work-family agenda. According to these stages, most companies in Korea are in the predevelopment stage or stage 1. Development of scales to assess company family-friendliness is needed to create a family-friendly workplace environment, policies, and programs. It is critical that companies have champions who have the vision to step out in kent, and the determination to ensure that the family-friendly programs are solidly grounded. Companies should develop their work-family initiatives as an integral part of a program for managing diversity focusing on needs of women and minority employees.

The Evolution of the Systems of Innovation Approach: A Review of the Main Issues (혁신체제론의 진화 및 주요 논점)

  • Ku, Young-Woo;Cho, Sung-Bok;Min, Wan-Kee
    • Journal of Korea Technology Innovation Society
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    • v.15 no.2
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    • pp.225-241
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    • 2012
  • This paper examines the evolution of the systems of innovation approach and its main issues. At first, national systems of innovation have appeared on the purpose to substitute the neoclassical macroeconomic policies. But various criticisms have been raised because of the restriction within national boundary of analysis, the lack of dynamic analysis, the danger of institutional determination, the deficiency of theoretical accuracy in national systems of innovation. Technological systems, regional systems of innovation, sectoral systems of innovation have been developed to overcome criticisms about national systems of innovation. Nevertheless the unsettled questions in the systems of innovation approach remain. The academic and policy-making usefulness of the systems of innovation approach will be expanded by development of the complementary researches within approach.

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A Comparative Study of the Idol Systems in Korea and Japan Focusing on IZ*ONE (한·일 아이돌 시스템 비교연구)

  • Cho, Eun-Ha
    • The Journal of the Korea Contents Association
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    • v.19 no.9
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    • pp.221-232
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    • 2019
  • The uniqueness of the K-Pop 'idol' culture, which is a key area of its success, can be found not only through the acceptance of diverse cultures and the strengthening of the performance capacity, but also by the effective utilization of new technological environment. As a result, the Korean idol system, which is distinguished from the Japanese idol system, is established. And these systems are evolving with new technological environments. This paper examines the process of evolution of the Korean idol system that adapts to the technical environment through the case of the idol girl group 'IZ*ONE'. 'IZ*ONE' not only achieved rapid success by actively utilizing SNS and new media and producing interactive narratives, but also establishing stable expansion and homogeneity of fandom through interactive rituals. By comparing the evolution and achievement of such a system with the Japanese idol system, we will be able to present the factors of K-Pop success more clearly.

Policy Agenda Setting of Floating Solar PV - Based on the Co-evolution of Technology and Institutions - (수상태양광 정책의제설정 연구 - 기술과 제도의 공진화 관점 -)

  • Lee, Youhyun;Kim, Kyoung-min
    • Journal of Korean Society on Water Environment
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    • v.37 no.6
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    • pp.493-500
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    • 2021
  • Floating solar photovoltaic (hereinafter PV) power generation is emerging as a proper alternative to overcome various environmental limitations of existing offshore PV generation. However, more government-led policy design and technical and institutional development are still required. Based on the policy agenda setting theory and technological innovation theory, this study contains the research questions concerning the co-evolution of technology and the floating solar PV policy. This study primarily evaluates the technological and institutional development level of floating solar PV policy through a survey of domestic floating solar PV experts. Secondly, we also analyze the kind of policy agenda that should be set a priori. Analyzing the priorities to be considered, the first environmental enhancement needs to be considered from both the technical and institutional aspects. The second candidate task for the policy agenda is residents' conflict and improvement of regulations. Both candidate tasks need to be actively considered in the policy agenda from the institutional point of view. The third is publicity, profit sharing, follow-up monitoring, and cost. Among them, public relations and profit sharing are tasks that need to be considered in the policy agenda from the institutional point of view. On the other hand, the cost of follow-up monitoring should be considered as a policy agenda in terms of technology, system, and common aspects. Finally, there are technical standards. Likewise, technical standards need to be considered in the policy agenda in terms of both technical and institutional commonality.

Triple Helix Model evolution perspective through human capital policies in the process of industrialization era (산업화과정 인력양성 정책을 통해 본 Triple Helix Model의 진화)

  • Junghee Han
    • Journal of Technology Innovation
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    • v.31 no.2
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    • pp.29-58
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    • 2023
  • The knowledge and technological competitiveness produced by universities determines a country's scientific technology and industrial competitiveness. The aim of this study is to find the evolution of Triple Helix Model (THM) by analyzing cases of technological catching-up and nurturing the human capital policies during Korea industrialization era, from 1960 to 2020. To fulfill the aims, this study utilized qualitative methodologies. In this study not only the process of acquiring technologies and core technologies but also the system for nurturing the human capital focused on scientific and engineers was analyzed. In addition characteristics of each ear of Triple Helix Model (THM) were examined. From the results, this study suggests Triple Helix Syncro-Scenario (THSS) which is the compelling innovation model, based on scenario, combined the personal experiences various critical thoughts and problems with enterprises and government for creating the incessment innovations.

A Study on the Proposal of Spiral Evolution Model of IPTV, M-IPTV, OTT & Smart Media focusing on Exploration & Exploitation Theory (IPTV, M-IPTV, OTT, 스마트미디어 진화단계에 관한 탐색과 활용관점의 Spiral 모형 연구)

  • Lee, Sang-Ho;Kim, Jai-Beom;Kim, Young-Berm
    • Journal of Digital Contents Society
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    • v.15 no.3
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    • pp.327-338
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    • 2014
  • This study proposes the evolution model of emerging media platform including smart media (M-IPTV, Smart TV) and IPTV, through a spiral evolution model based on the theory of the exploration & the exploitation. Authors suppose that the IP media evolved from IPTV technology, evolution of which has come through the development model of serial circular process. For explanation of this evolution, we propose the research model integrating the spiral model and the exploration & exploitation theory. Researchers define the smart media as the evolved media from IPTV, through this proposed model. We expect this model to be the theoretical base of media regulation and setting direction of future media service. Thus, this research are summed up as follows. To begin with, we classify the evolutionary stage of IPTV from the view points of service feature, regulation frame and technological characters. Secondly, we organize and confirm the research model of IPTV evolution through case analysis of the 3 cycles of each evolutionary stage. As a result, discussion of this study helps understanding mobile IP media and smart media as a post IPTV and leads the solution of various regulation issues and the development of the innovative media service and content. In addition, it can guide the government for the evolutionary direction to promote the media and the content industry.

A Study on the Acceptance of Western timber structure and the Interior space of Church buildings in the early modern period in Korea - Focused on the roof structure of church architecture in the Flowering and Japanese occupation period - (한국 근대초기 서양 목구조의 수용과 교회 내부공간형태에 관한 연구 - 개화기와 일제강점기 교회건축의 지붕틀 구조를 중심으로 -)

  • Kim Jung-Shin
    • Korean Institute of Interior Design Journal
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    • v.14 no.5 s.52
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    • pp.10-17
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    • 2005
  • This Study is concerned with the acceptance of Western timber structure and the interior space of church buildings in the early modern period in Korea. Timber roofs have represented a wide variety of constructional forms and have been fundamental to any technological appraisal of the evolution of both of Western and Eastern architecture. Especially the roof structure of the church buildings reflects the technological level, aesthetic sense, and spacial concepts of the age. Between Western timber structure and Korean timber structure, there are many differences in not only structural form but also form of roof, members, load, frame system and etc. And there were various types of framing technique such as timber truss, timber arch, timber vault in the western style church architecture in the early modern period in Korea. I have summarized the character of the acceptance process of Western timber structure and the influences on the interior space of church buildings.

Policy Directions for Boosting Fusion of PC in the Mechatronics Industry: (메카트로닉스산업의 PC 융합 촉진을 위한 기술정책 방향)

  • 이공래
    • Proceedings of the Korea Technology Innovation Society Conference
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    • 2000.05a
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    • pp.154-173
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    • 2000
  • Since computerized numerical controller (CNC) emerged as a result of the fusion of the electronics technology and the mechanical technology, there has been continuous evolution of CNC technology in the mechatronics industry. The industry is recently developing a new control system based on the fusion of personal computer (PC) and CNC. Upgraded PC has now integrated into CNC, making various machines possible to exchange data, software and hardware, and to greatly improve man-machine interface. The fusion of PC and CNC can form a new paradigm in technological innovation of not only control system but also whole machinery industry in near the future. Korea lagged behind the developed countries in the development of open control system with the fusion of PC. Turbo-tek, Hyundai Motor and Daewoo are leading companies, but their commercial possibility seems to be low because domestic market is too small to reap a commercial benefit. Nevertheless, the development of the system is an essential step for Korea to embark on a future technological paradigm of the machinery industry. The government needs to play some role for the development, for instance, government R&D projects, institutional building and training of related technicians.

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Understanding Current Issues in Research and Education in Science and Technology: A Framework of Knowledge and Action Sharing between Universities and Science and Technology Parks

  • Fernandez, Ramon Emilio;Ferguson, David L.
    • World Technopolis Review
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    • v.6 no.1
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    • pp.2.1-2.9
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    • 2017
  • Humanity is experiencing a very fast-paced technological evolution. As technological systems evolve exponentially, societies are becoming more global and are starting to have impacts beyond their geographic demarcations. This implies that, the actions of a person who is across the ocean from where we live could have significant impacts on our everyday lives. This article explores the complexity of globalization, identifies a number of global issues, and looks at the University and the Science and Technology Parks as potential sources of human capital to tackle current and forthcoming global challenges, ranging from new energy sources to potable water distributions. The article focuses on current efforts that are taking place across universities and science and technology parks around the world. We propose a new methodology whereby interdisciplinary work can inform the development of multidisciplinary approaches to solve some of the most complex global issues such as cyber security and educating the next generations of global leaders, providing them them with the necessary skills to be successful in a globally distributed workforce.