• Title, Summary, Keyword: Integrity

Search Result 4,516, Processing Time 0.051 seconds

On-chip Decoupling Capacitor for Power Integrity (전력 무결성을 위한 온 칩 디커플링 커패시터)

  • Cho, Seungbum;Kim, Sarah Eunkyung
    • Journal of the Microelectronics and Packaging Society
    • /
    • v.24 no.3
    • /
    • pp.1-6
    • /
    • 2017
  • As the performance and density of IC devices increase, especially the clock frequency increases, power grid network integrity problems become more challenging. To resolve these power integrity problems, the use of passive devices such as resistor, inductor, and capacitor is very important. To manage the power integrity with little noise or ripple, decoupling capacitors are essential in electronic packaging. The decoupling capacitors are classified into voltage regulator capacitor, board capacitor, package capacitor, and on-chip capacitor. For next generation packaging technologies such as 3D packaging or wafer level packaging on-chip MIM decoupling capacitor is the key element for power distribution and delivery management. This paper reviews the use and necessity of on-chip decoupling capacitor.

Automatic Data Matching System for CAD Data's Integrity (CAD 데이터의 무결성을 위한 데이터 매칭 자동화 시스템)

  • Byeon, Hae-Gwon;Yoo, Woo-Sik
    • IE interfaces
    • /
    • v.24 no.1
    • /
    • pp.71-77
    • /
    • 2011
  • Design works consist of essential works and subsidiary works. Essential design works means designing creative ideas and productive ideas, while subsidiary design works means helping essential works those are making data tables and specification sheets, checking CAD data's integrity. Subsidiary design works forms the bulk of the whole design process and affects the time limit of delivery. Therefore we propose the automatic data matching system for CAD data's integrity. Proposed system is automatic system supporting subsidiary design works. The data matching system consists of three parts; 1) automatic generation of data tables 2) supporting module for checking CAD data's integrity between Drawings 3) automatic generation of spec. sheets. Developed system was tested in LCD equipment manufacture company and was found to be useful system.

A Study on Evaluation of Structural Integrity and Fatigue Analysis for the Bogie Frame of Monorail (모노레일 대차프레임에 대한 구조 안전성 및 피로강도 평가에 관한 연구)

  • Ko, Hee-Young;Shin, Kwang-Bok;Lee, Kwang-Seop;Lee, Eun-Gyu
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.609-614
    • /
    • 2010
  • In this paper, the structural integrity and fatigue strength for the bogie frame of Monorail being developed in domestic was evaluated. Presently, the standard of evaluation for the bogie frame of monorail was not regulated. Therefore, the evaluation of the structural integrity and fatigue strength for the bogie frame was performed on the basis of the UIC 615-4 standard. The structural integrity of the designed bogie frame was evaluated by displacement and Von-Mises stress under each load conditions. And the fatigue strength was evaluated by combined main in-service load conditions specified at UIC 615-4 standard and it was compared with result of fatigue analysis using winLIFE v3.1 with the function of batch processing. The results shows that the structural integrity and fatigue strength of the designed bogie frame was satisfied, and the fatigue analysis using batch processing was more effective than conventional fatigue analysis using combined load conditions.

  • PDF

Proposing Missions and Alternatives for Integrity and Practicality of Human Ecology (생활과학의 통합성과 실천성 - 과제와 대안)

  • Lee, Ki-Young;Kim, Yoo-Kyung;Song, Hye-Rim
    • Korean Family Resource Management Association
    • /
    • v.14 no.2
    • /
    • pp.21-33
    • /
    • 2010
  • This study was designed to establish the standing of Human Ecology by discussing the integrity and practicality of Human Ecology and viewing it from various angles. We dealt with objects of study, viewpoints, and the adoption of research results in discussing the integrity of Human Ecology. We also discussed the practicality of Human Ecology focusing on family welfare, health and policy. This study revealed that integrity and practicality were closely connected and played important roles in the identification of Human Ecology.

  • PDF

The Effects of Ego Integrity on Death Anxiety of the Elderly: Focusing on the Mediating Effect of Depression (노인의 자아통합감이 죽음불안에 미치는 영향 : 우울의 매개효과를 중심으로)

  • Chang, Kyung-Eun
    • Korean Journal of Human Ecology
    • /
    • v.20 no.5
    • /
    • pp.917-926
    • /
    • 2011
  • The purpose of this study is to identify the influence of ego integrity on death anxiety of the elderly, mediated by depression based on Erikson theory(1963). For this study, 313 elderly over 60 years old in Daegu city participated in a survey. The data of the survey was analyzed using SPSS 15.0 and Structural Equation Modeling(SEM) with AMOS 7.0. The results of the study are as follows: ego integrity of the elderly does not influence death anxiety due to the suppressing effect of depression. However, depression does mediate the relation between ego integrity and death anxiety fully. Such findings suggest that the Erikson theory can also be applied to elderly Korean citizens. A practical benefit derived from the study's results is the proposition to implement a reminiscence program, reinforce depression treatment and prevention systems, and augment a death awareness movement for elderly.

Integrity Assessment of Weld Repair of Bolt-Screw Assembly (볼트-나사 결합체의 보수용접 건전성 평가)

  • Kim, Maan-Won;Shin, In-Hwan;Lee, Kyoung-Soo
    • Transactions of the Korean Society of Pressure Vessels and Piping
    • /
    • v.11 no.1
    • /
    • pp.79-86
    • /
    • 2015
  • The purpose of this study is to evaluate structural integrity of a weldment which is partially screwed and then welded. Two finite element models are constructed and solved: operating temperature and internal pressure are considered in the first simple model, and welding process and normal operating condition including heat-up process are simulated in the second model. Structural integrity assessment criteria are satisfied with both finite element models, therefore the repair weldment finely sustains structural integrity of this assembly and prevents leakage. Stresses are dramatically increased when weld residual stress is considered, but it should be considered as a secondary stress.

Development of an Internet based Virtual Reality Environment and Web Database for the Integrity Evaluation of the Nuclear Power Plant (원자력발전소 건전성평가를 위한 인터넷기반 가상현실환경과 웹데이터베이스의 개발)

  • 김종춘;정민중;최재붕;김영진;표창률
    • Korean Journal of Computational Design and Engineering
    • /
    • v.6 no.2
    • /
    • pp.140-146
    • /
    • 2001
  • A nuclear Power Plant is composed of a number of mechanical components. Maintaining the integrity of these components is one of the most critical issues in nuclear industry. In order to evaluate the integrity of these mechanical components, a lot of data are required including inspection data, geometrical data, material properties, etc. Therefore, an effective database system is essential to manage the integrity of nuclear power plant. For this purpose, an internet based virtual reality environment and web database system was proposed. The developed virtual reality environment provides realistic geometrical configurations of mechanical components using VRML (Virtual Reality Modeling Language). The virtual reality environment was linked with the web database, which can manage the required data for the integrity evaluation. The proposed system is able to share the information regarding the integrity evaluation through internet, and thus, will be suitable for an integrated system for the maintenance of mechanical components.

  • PDF

Development of a Web-based Fatigue Life Evaluation System for Primary Components in a Nuclear Power Plant (원자력발전소 1 차 계통 주요기기에 대한 웹기반 피로수명평가 시스템 개발)

  • Seo, Hyong-Won;Lee, Sang-Min;Choi, Jae-Boong;Kim, Young-Jin;Choi, Sung-Nam;Jang, Ki-Sang;Hong, Sung-Yull
    • Proceedings of the KSME Conference
    • /
    • /
    • pp.279-284
    • /
    • 2003
  • A nuclear power plant is composed of a number of primary components. Maintaining the integrity of these components is one of the most critical issues in nuclear industry. In order to maintain the integrity of these primary components, a complicated procedure is required including regular in-service inspection, failure assessment, fracture mechanics analysis, etc. Also, experts in different fields have to co-operate to resolve the integrity issues on the basis of inspection results. This integrity evaluation process usually takes long, and thus, is detrimental for the plant productivity. Therefore, an effective safety evaluation system is essential to manage the integrity issues on a nuclear power plant. In this paper, a web-based fatigue life evaluation system for primary components in nuclear power plant is proposed. This system provides engineering knowledge-based information and concurrent and collaborative working environment through internet, and thus, is expected to raise the efficiency of integrity evaluation procedures on primary components of a nuclear power plant.

  • PDF

Study on Evaluation Method of Structural Integrity for Cone-Type Composite Lattice Structures with Hexagonal Cell (육각 격자구조를 갖는 콘형 복합재 격자구조체의 구조안전성 평가 기법 연구)

  • Im, Jae-Moon;Kang, Seung-Gu;Shin, Kwang-Bok;Lee, Sang-Woo
    • Composites Research
    • /
    • v.31 no.4
    • /
    • pp.156-160
    • /
    • 2018
  • In this paper, evaluation method of structural integrity for cone-type composite lattice structures with hexagonal cell was conducted. A finite element analysis was used to evaluate the structural integrity of cone-type composite lattice structure. The finite element model for evaluation of structural integrity was generated using solid element. In order to consider the difference in mechanical properties between intersection and non-intersection part, the mechanical properties were applied considering the fiber volume fraction of each part. Compression test of cone-type composite lattice structure were conducted for verification of evaluation method of structural integrity. The analysis result showed 2% errors in displacement and good agreement with test result.