• Title/Summary/Keyword: composing

Search Result 1,065, Processing Time 0.035 seconds

Li-ion batteries, its applications and research trends

  • Lim, Jinsub
    • Proceedings of the Korean Vacuum Society Conference
    • /
    • 2015.08a
    • /
    • pp.84.2-84.2
    • /
    • 2015
  • Growing market of electric vehicles such as hybrid, plug-in hybrid, and bare electric vehicles in the world is accelerating the significance of Li-ion batteries as a renewable green energy. According to such market flow, the developing components such as cathode, anode, electrolyte, and separator, composing the Li-ion batteries, is significantly important tasks for the commercialization. In particular, development of the cathode material having high capacity and stable thermal stability is essential for long-distance electric vehicle in the near future. Herein we introduce various applications of Li-ion batteries such as portable electronics, electric vehicles, and energy storage system, and also its research trend, in particular on the cathode materials.

  • PDF

Development of an On-Line Model for the Prediction of Roll Force and Roll Power in Roughing Mill by FEM (유한요소법을 이용한 조압연에서의 압하력 및 압연동력 예측 온라인 모델 개발)

  • Kim S. H.;Kwak W. J.;Hwang S. M.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
    • /
    • 2001.10a
    • /
    • pp.134-137
    • /
    • 2001
  • In this paper on-line model is derived from investigating via series of finite element process simulation. Some variables that little affect on non-dimensional parameters. ie. forward slip and torque factor. is extracted from composing on-line model Especially, this research focused on deriving on-line model which exactly predict roll force and roll power in the roughing mill process under small shape factor and small reduction ratio. The prediction accuracy of the proposed model is examined through comparison with predictions from a finite element process model

  • PDF

Responses of Quercus spp. to $SO_2$ ($SO_2$에 대한 참나무속 식물의 반응)

  • 이창석;배정오
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.7 no.3
    • /
    • pp.219-226
    • /
    • 1991
  • Results from study on physiological responses to $SO_2$ of Quercus spp. selected for restoration of vegetation damaged by air pollution in the field study were as follows. Tolerance of Quercus aliena, Q. acutissima and Q. mongolica used in this study to $SO_2$ was higher in that order and tolerance of these plants to $SO_2$ was high comparatively among trees composing of major forest vegetation of Korea including natural forests and plantations. Stomatal resistance of these plants was increased after exposure to $SO_2$ and range of increase was different among species. From discrepancy between order of tolerance to $SO_2$ and range of increase in stomatal resistance, we were estimated that resistance mechanisms of Quercus spp. were different among species as mechanism originated in avoidance and resistance, respectively. Water potential of plant leaves reduced after exposure to $SO_2$, degree of reduction accorded with order of tolerance to $SO_2$. Reduction of water potential of plants after exposure to $SO_2$ was initiated before appearance of visible damage in plant leaves and water potential of plants exposed to $SO_2$ of low concentration, in which plants were not showed viaible damage was also reduced.

  • PDF

WebDG - A Platform for E-Government Web Services

  • Bouguettaya, Athman;Medjahed, Brahim;Rezgui, Abdelmounaam;Ouzzani, Mourad;Liu, Xumin;Yu, Qi
    • 한국디지털정책학회:학술대회논문집
    • /
    • 2004.11a
    • /
    • pp.389-404
    • /
    • 2004
  • Web services are deemed as the natural choice for deploy- ing e-government applications. Their use enables e-government to fully get advantage of the envisioned Semantic Web. In this paper, we pro- pose WebDG, a comprehensive Web Service Management System for e-government applications. It aims to improve government-citizen inter- actions through an infrastructure built around the "life experience" of citizens. WebDG provides a framework for automatically composing e- government services, optimized querying services, and preserving privacy.

  • PDF

Expert System for Assemblability of Products based on the Assembly Feature in Screwing (나사작업에 있어서의 조립형상 특징을 기초로 한 조립용이화 제품설계 전문가시스템 개발)

  • Mok, Hak-Soo;Kim, Gyung-Yun;Lee, Jae-Cheol
    • Journal of Korean Institute of Industrial Engineers
    • /
    • v.20 no.4
    • /
    • pp.153-180
    • /
    • 1994
  • The assemblability is determined by the structure of product and the relationship between composing parts and machining parts. In this paper, the bolt was divided into bolt-head, -shaft, -thread and -end. For higher assemblability in bolting process, it was analyzed the geometric and technological characteristics of bolts were analysed regarding pre- and in-assembly process. And this paper presents the knowledge-based expert system to assist for designer in the processor of designing bolt for easier assembly. The developed expert system for supporting bolt design assemblability which is named as BDFA SYSTEM consists of two system such as "BOLT DESIGN SYSTEM" which provide feasible assembly bolt design to designer and "EVALUATION SYSTEM" which provide assembly evaluation to alternative of bolt design.

  • PDF

Expansible and Reconfigurable Neuro Informatics Engine : ERNIE (대규모 확장이 가능한 범용 신경회로망 : ERNIE)

  • 김영주;정제교;동성수;이종호
    • Proceedings of the IEEK Conference
    • /
    • 2003.07d
    • /
    • pp.1263-1266
    • /
    • 2003
  • One of the hardest problems in implementation of digital neural network are extension of synapses and programmability for relocating neurons. This paper Proposes a new hardware structure to solve these problems. The proposed structure can reconfigure network connections without alteration of basic design, and extend number of synapses attached to one neuron. Also, it is possible to extend the number of neurons and layers by connecting many MPUs(Modular Processing Unit). Generality and extensibility are verified by composing various kinds of Perceptorn and Kohonen networks using the architecture proposed in this paper and the verification performances compares well with HDL simulation results as well as the results of C modelling.

  • PDF

A design of Discrete Wavelet Transform Encoder for Image Signal Processing (영상신호 처리를 위한 이산 웨이브렛 변환용 부호화기 설계)

  • 김윤홍;김정화양원일이강현
    • Proceedings of the IEEK Conference
    • /
    • 1998.10a
    • /
    • pp.1101-1104
    • /
    • 1998
  • The modern multimedia applications which are video processor, video conference or video phone and so forth require real time processing. Because of a large amount of image data, those require high compression performance. In this paper, the prosposed image processing encoder was designed by using wavelet transform encoding. The proposed filter block can process imae data on the high speed because of composing individual function blocks by parallel and compute both highpass and lowpass coefficient in the same clock cycle. When image data is decomposed into multiresolution, the proposed scheme needs external memory and controller to save intermediate results and it can operate within 33MHz.

  • PDF

A study for the structural design of floating airports on sea (부유식 해상공항의 구조설계에 관한 연구)

  • Seong-Whan Park;Tae-Young Chung
    • Journal of the Society of Naval Architects of Korea
    • /
    • v.38 no.2
    • /
    • pp.19-25
    • /
    • 2001
  • Structural design requirements for very large floating structures(VLFS) are different corresponding to this purpose and structural type. In this study, the structural design procedure of VLFS is described, composing of the following processes : construction of design conditions. choice of structural types and main materials, estimation of structural design loads, determination of structural arrangements, and scantling of structural members. As an example of practical application, the initial structural design of floating airport and container terminal for Pusan is demonstrated.

  • PDF

Being healthy: Feeling healthy

  • Rastogi, Rajiv;Rastogi, Devesh
    • CELLMED
    • /
    • v.8 no.1
    • /
    • pp.1.1-1.4
    • /
    • 2018
  • We have various understandings regarding health. Various medical systems being practiced in India other than conventional medicine i.e. Ayurveda, Yoga & Naturopathy, Unani, Siddha and Homoeopathy have defined health in their own way. From physical level up to spiritual level health has so many aspects which affect our overall personality. Some says that one who is established in self is healthy but some other says that in a perfect state of health physical homeostasis and mental equanimity occur in a balanced and healthy harmony. Another concept believes that health is normal and harmonious vibration of the elements and forces composing the human entity on the physical, mental, moral and spiritual planes of living in accordance with the constructive principles in Nature. At one place it is stated that good health means existence in harmony with evolution. The authors have reviewed various concepts and definitions of health and trying to conclude that health is a feeling which may be experienced only if you are really healthy. So, health is more and more balancing of all elements of your life in harmony with the universe.

K-way Super Node Approach for Guaranteeing User's Global QoS (사용자 전역 QoS를 보장하기 위한 K-way 수퍼 노드 접근법)

  • Kang, Nam-Oh;Park, Sa-Joon
    • Journal of Internet Computing and Services
    • /
    • v.8 no.5
    • /
    • pp.109-116
    • /
    • 2007
  • Nowadays, with the proliferation of Web services, developer and user can implement a complex application by composing registered Web services. In this trend, the quality of service of a composite Web service is of crucial importance for today's Service Oriented Computing (SOC) environment. But the global optimization of a composite Web service satisfying given QoS is classified to NP-hard problem. To solve this problem, we propose K-way Super node approach and show the effect of it from experimental results.

  • PDF