• Title/Summary/Keyword: U-based

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A Study on the Process of U-City Based Facilities for Management : Case of Bridge (U-City기반시설물의 관리운영절차 및 적용기술에 관한 연구 : 교량 관리운영을 중심으로)

  • Roh, Do-Yeong;Park, Kyeong-Ho;Jang, Woo-Sik
    • Journal of Korean Society for Geospatial Information Science
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    • v.17 no.2
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    • pp.101-112
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    • 2009
  • This Study is U-City based facilities analysis procedures and techniques of the effective management. We analyze the existing procedure of the management of urban based facilities. And U-City based facilities of management procedures were presented. U-City based facilities were classified regular inspection, safety inspection, emergency inspection, accurate safety diagnosis, routine work and emergency work. We analyze the skills required in the management of these facilities. The procedures for the management of U-City based facilities will improve efficiency of urban management and safety of citizen. As a result, the management of U-City based facilities will lead to improving the quality of services for citizens and competitiveness of the city. Furthermore, this will be the foundation of the environment that people can enjoy safe and convenient life.

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A Study on the u-Residential Space Service : Focusing on u-Service Extraction and Application (u-주거공간의 u-서비스 추출 방법론 및 적용에 관한 연구)

  • Lee, Heang-Woo;Jung, Jin-Sung;Kim, Yong-Seong
    • Journal of Information Technology Services
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    • v.10 no.4
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    • pp.309-321
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    • 2011
  • The u-City construction plan being executed presently involves such problem that services are provided in a suppliers-oriented direction while there are not much discussions on what u-Services citizens should be provided with and what u-Services that city government the supplier shall provide. In order to implement citizen-friendly u-Services the type of u-Services that offer just the right services efficient and convenient for citizens, u-Services should be provided based on active researches on the citizens' use and utilization of u-Services rather than u-Services being provided in suppliers' perspective as so far. To that end, there need be recognition and well-organized methodology that u-Services should be provided through humane, social and scientific analysis of the citizens that are to be provided with u-Services. Thus, in this study, the process of u-Services being transmitted was re-interpreted as background theory to deduce and apply services appropriate for u-Residential Space, and service science for u-Services the scientific and overall approach to seek for service innovation was applied to the development of u-Service deduction method based on such background theory. The u-Service methodology developed based on service science is judged able to deduce and provide u-Services appropriate for the intended services through scientific analysis of citizen-friendly u-Services.

On Multipliers of Lattice Implication Algebras for Hierarchical Convergence Models (계층적 융합모델을 위한 격자함의 대수의 멀티플라이어)

  • Kim, Kyoum-Sun;Jeong, Yoon-Su;Yon, Yong-Ho
    • Journal of Convergence for Information Technology
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    • v.9 no.5
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    • pp.7-13
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    • 2019
  • Role-based access or attribute-based access control in cloud environment or big data environment need requires a suitable mathematical structure to represent a hierarchical model. This paper define the notion of multipliers and simple multipliers of lattice implication algebras that can implement a hierarchical model of role-based or attribute-based access control, and prove every multiplier is simple multiplier. Also we research the relationship between multipliers and homomorphisms of a lattice implication algebra L, and prove that the lattice [0, u] is isomorphic to a lattice $[u^{\prime},1]$ for each $u{\in}L$ and that L is isomorphic to $[u,1]{\times}[u^{\prime},1]$ as lattice implication algebras for each $u{\in}L$ satisfying $u{\vee}u^{\prime}=1$.

A Methodology for Assessing the Level of U-Transformation of Ubiquitous Services

  • Kwon, Oh-Byung;Kim, Ji-Hoon;Choi, Keun-Ho
    • Proceedings of the Korea Association of Information Systems Conference
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    • 2005.12a
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    • pp.359-366
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    • 2005
  • As the ubiquitous computing technology (uT) is prevailing, applying uT is more likely to transform the legacy way of doing business to a new way with the goals of ubiquitous computing: strategic use of information resources by using them everywhere, every time, with any devices for any services. These opportunities naturally require the provision to assess the degree of the transformation from the legacy IT-based e-business to the uT-based business. However, research about assessing the degree of u-transformation has been still very few. Moreover, even deciding what is ubiquitous or not is obscure. Hence, this paper aims to propose the methodology for assessing the degree of u-transformation oriented by the teleology of ubiquitous service, which intends to fully make use of uT in creating new business of next generation. Through the literature review, we developed the methodology to check whether the provided service is ubiquitous or not based on the capabilities that technologies have. and then, the methodology developed to assess the technical requirements that the uT should have when the transformation is considered through the focus group interview based on the literature review of the capability. A two-layered approach is introduced to assess not only the level of ubiquity but also the degree of u-transformation.

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COMPARISON OF NEUTRONIC BEHAVIOR OF UO2, (TH-233U)O2 AND (TH-235U)O2 FUELS IN A TYPICAL HEAVY WATER REACTOR

  • MIRVAKILI, SEYED MOHAMMAD;KAVAFSHARY, MASOOMEH ALIZADEH;VAZIRI, ATIYEH JOZE
    • Nuclear Engineering and Technology
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    • v.47 no.3
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    • pp.315-322
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    • 2015
  • The research carried out on thorium-based fuels indicates that these fuels can be considered as economic alternatives with improved physical properties and proliferation resistance issues. In the current study, neutronic assessment of $UO_2$ in comparison with two $(Th-^{233}U)O_2$, and $(Th-^{235}U)O_2$ thorium-based fuel loads in a heavy water research reactor has been proposed. The obtained computational data showed both thorium-based fuels caused less negative temperature reactivity coefficients for the modeled research reactor in comparison with $UO_2$ fuel loading. By contrast, $^{235}U$-containing thorium-based fuel and $^{235}U$-containing thorium-based fuel loadings in the thermal core did not drastically reduce the effective delayed neutron fractions and delayed neutron fractions compared to $UO_2$ fuel. A provided higher conversion factor and lower transuranic production in the research core fed by the thorium-based fuels make the fuel favorable in achieving higher cycle length and less dangerous and costly nuclear disposals.

A study on the energy consumption and management of an U-based city considering the characteristics of building energy in a city - Focused on Daegu·Gyeongbuk Area - (도시 내 건축물에너지 소비특성을 고려한 U-기반 도시에너지 수요 및 관리방안 연구 - 대구·경북을 중심으로 -)

  • Lee, Kang-Guk;Kim, Tae-Woo;Hyun, Taek-Soo;Hong, Won-Hwa
    • KIEAE Journal
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    • v.10 no.6
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    • pp.21-26
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    • 2010
  • This study is to suggest basic data for the policy on the energy demand and management of an U-based city compliant with characteristics of regions and districts in future city by conducting research on the energy consumption and management of an U-based city, considering city energy demand characteristics focused on the center district of Daegu metropolitan city. U-based city energy consumption and management solution is considered to be effective in establishing the guideline of environment-friendly urban architecture planning as well as the assessment of energy consumption characteristics in a city.

An RFID-based Patient Authentication Protocol for u-Healthcare (u-헬스케어를 위한 RFID 기반 환자 인증 프로토콜)

  • Yoo, Kee-young
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.7 no.1
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    • pp.45-49
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    • 2014
  • In this paper, we propose a secure and efficient RFID-based patient authentication protocol to not only authenticate patients' authenticity but also protect patients' personal medical informations for u-Healthcare environments. Since the proposed RFID-based patient authentication protocol provides strong security and efficiency, it can be used practically for patient authentication and personal medical information protection on the high technology medical environments such as u-Hospital and u-Healthcare.

Context-Awareness Technology for Location Based-Service for Ubiquitous Learning (U-Learning을 위한 위치 기반 서비스로서의 상황 인식 기술)

  • Kim, Hye-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.11
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    • pp.4869-4874
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    • 2011
  • In this paper, we defined constructivism and ontology theory and associate it in Location Based Service ubiquitous learning. And this paper aims to provide a clear vision about location based service (LBS) ubiquitous learning. The typical ubiquitous learning involving the Context Aware Intelligent system was presented. Also the Architecture for learning environment including the key idea and technical concept is being presented in this paper. Guided with these principles and with the advancement of information and communication technology the context-awareness based on Artificial intelligence for Location based Service for ubiquitous Learning was conceptualized. U-learning for Location Based Service is presented here and the concept behind this new learning paradigm. The learning environment architecture which comprises the entire component is illustrated here.

A Study on Vitalization of Public Service based on Ubiquitous Computing (유비쿼터스 기반 공공서비스 활성화에 관한 연구)

  • Noh, Kyoo-Sung;Yoon, Tae-Geun;Ju, Seong-Hwan
    • Journal of Digital Convergence
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    • v.9 no.5
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    • pp.203-213
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    • 2011
  • This study examines the vision/strategies of policy for the public services based ubiquitous-IT. That policy is for searching the ubiquitous based people-friendly public services and promoting the industry related u-IT. This article's purposes are below; first, making the policy for activating the ubiquitous based public services, second, looking for the core subjects focused on practical value, and finally, proposing the system for the cooperation between public and private sector.

Multi-level Skip Connection for Nested U-Net-based Speech Enhancement (중첩 U-Net 기반 음성 향상을 위한 다중 레벨 Skip Connection)

  • Seorim, Hwang;Joon, Byun;Junyeong, Heo;Jaebin, Cha;Youngcheol, Park
    • Journal of Broadcast Engineering
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    • v.27 no.6
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    • pp.840-847
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    • 2022
  • In a deep neural network (DNN)-based speech enhancement, using global and local input speech information is closely related to model performance. Recently, a nested U-Net structure that utilizes global and local input data information using multi-scale has bee n proposed. This nested U-Net was also applied to speech enhancement and showed outstanding performance. However, a single skip connection used in nested U-Nets must be modified for the nested structure. In this paper, we propose a multi-level skip connection (MLS) to optimize the performance of the nested U-Net-based speech enhancement algorithm. As a result, the proposed MLS showed excellent performance improvement in various objective evaluation metrics compared to the standard skip connection, which means th at the MLS can optimize the performance of the nested U-Net-based speech enhancement algorithm. In addition, the final proposed m odel showed superior performance compared to other DNN-based speech enhancement models.