• Title, Summary, Keyword: data-base

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Data-Base on the Design of the Sensible Woven Fabrics (감성직물 설계의 DATA-BASE 화)

  • 정기진;박경순;강지만;김승진
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • pp.1351-1355
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    • 2003
  • 최근 의류용 감성소재가 다양해지면서 소재의 특성에 따른 최적 설계가 data-base에서 빨리 공급 될 수 있다면 시행착오에 따른 시간과 경비가 적게 소비되면서 소비자의 요구에 빨리 대응할 수 있는 소위 Q.R.도 가능하게 될 것이다. 이러한 감성 의류용 직물의 data base화를 위해서는 rapier, water-jet, air-jet 등 직기에 따른 소재의 설계분포 그리고 직기의 종류에 따라서 직물 설계 data의 분포가 어떠한지를 우선 조사하여야 한다. 본 연구에서는 국내 3개 업체의 실제 현장에서 생산되고 있는 PET 소재의 감성의류용 직물소재의 설계 Data를 직기별로 구분하고 직물 설계 조건들을 조사ㆍ분석하여 경사, 위사 번수별 조직계수를 계산하여 이들 data를 data-base화하고 도시하였다. 또한 이들 분석된 그래프에서 직기 종류별, 직물 조직별, 소재 item별 조직계수와 직물밀도를 예측할 수 있는 방법을 제시함과 더불어 조직에 따른 이들 직물의 설계조건을 제안함으로서 실제 현장에서 쉽게 사용할 수 있는 연구자료를 업체에 제공하고자 한다.

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Development of Expert System for Designing Power Transmission Elements, Especially of Gear Drives (I) - Building and Operation of Data Base for Designing and Trouble-Shooting of Gear Drives - (動力傳達용 齒車設計를 中心으로 한 機械要素 設計의 엑스퍼트 시스템 開發硏究 I)

  • 정태형;구보애삼
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.11 no.6
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    • pp.1014-1025
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    • 1987
  • This paper proposes an approach of building an expert system for designing gear drives. In terms of gear drives the relationship between expert systems and data base systems is explained and a data base system for design, failure detection, and trouble-shooting of gear drives is built on a personal computer by the data manipulation language of dBASE III. This paper proposes a method how to build a data base system and what to consider to build a data base system for gear drives and two kinds of data base systems of design and failure detection of gear drives and trouble-shooting for noise and vibration of gear drives are built. The two data base systems are very effective for the retrieval of information for the gear design, and they will be considerably helpful for the gear design.

Development of An Adroid Application with An Web Server DataBase (Web Server DataBase를 이용한 안드로이드 어플리케이션 개발)

  • Park, Han-Kook;Hong, Min
    • Proceedings of the Korea Information Processing Society Conference
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    • pp.1082-1084
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    • 2011
  • 최근 스마트폰의 보급률이 급격하게 증가함에 따라 스마트폰 사용자들이 요구하는 어플리케이션들도 더욱 다양해지고 어플리케이션들의 효율성 또한 높아져야하는 상황이다. 또한 대부분의 스마트폰 어플리케이션들이 데이터를 효율적으로 저장, 관리하기 위해서 DataBase를 이용하고 있다. 비록 하드웨어기술이 눈부시게 발전하기는 했지만, 아직까지는 제한적인 스마트폰 기기의 하드웨어 환경상 효율적인 어플리케이션을 개발하기 위해서는 DataBase를 효율적으로 설계하고 각종 쿼리문을 적절하게 활용하여 최적의 성능을 제공할 수 있도록 구현되어야 한다. 따라서 본 연구는 변경사항이 적은 Data는 SQLite를 이용하여 스마트폰 어플리케이션 내부의 DataBase에 저장하고, 변동이 잦은 Data는 별도의 Server DataBase를 이용하여 스마트폰과의 네트워크 통신을 이용한 연동을 통해 어플리케이션의 내용이 업데이트 되도록 설계하였다.

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A Predictive Preventive Maintenance Data Base System Design for Safety (안전성 확보를 위한 예측.예방설비보전 데이터베이스 시스템 설계)

  • Yang, Sung-Hwan;Park, Peom
    • Journal of the Society of Korea Industrial and Systems Engineering
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    • v.20 no.44
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    • pp.123-128
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    • 1997
  • A data base design framework for predictive a preventive-maintenance system is presented in this paper in order to effectively control machines and reduce accident rates in the workplace. The data base is designed to meet general management requirements to evaluate different maintenance strategies. There are seven data files: the equipment list maintenace pesonnel, maintenance history, maintenance specification, spare part, maintenance equipment, and maintenance schedules. Each data base file has several record based upon data acquisition.

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A Study on Data Modeling for VLDB Performance (VLDB의 성능을 고려한 데이터 모델링에 관한 연구)

  • Li, Zhong-Shi;Lee, Chang-Ho
    • Journal of the Korea Safety Management & Science
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    • v.14 no.2
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    • pp.185-192
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    • 2012
  • It has been a huge amount of capacity of 10GB data base in a decade ago so far. Nowadays, however, 10TB is the common data base and even bigger capacities are available. So, new generation of Very Large Data Base (VLDB) has begun. Moving in to the new generation of VLDB has been caused major problems like backing up, restoring, and managing especially performance. It is very hard to export necessary data rapidly now due to the huge amount of data base. In the past, such kind of problems was out of the questions because of less data. As time goes on, however, optimization of performance became a big issue when the VLDB is common. Therefore, new professional technics are urgently required to maintain and optimize the data base that has become a VLDB or one that is in the progress of becoming one.

The Development of Seismic Monitoring for a Base-Isolated Building System (지진격리 구조물의 지진모니터링 시스템 개발)

  • 김성훈;조대승;박해동;김두훈
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • pp.247-251
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    • 2001
  • Nowadays, base isolation systems such as lead-rubber bearing, elastomer bearing and sliding bearing have been installed to the various structures to prevent the disaster from seismic. The performance of base isolation system have been well proved by model-scale experiments and numerical analysis. However. the seismic response data measured at real large base-isolated structures is still insufficient. This paper presents a seismic monitoring system, acquiring real-time acceleration signals up to 32 channels, displaying time history and spectrum of the signals, storing the acquired data at a PC hard disk, and replaying the saved data. Moreover, the system can be operated without any limitation for monitoring period by automatic management of stored data file. The developed system has been installed at a real base-isolated building using lead-rubber bearings and we expect its seismic response data with ground motion signal can be well licquired in case of earthquake occurrence.

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The Rolling Stock operation reliability improvement plan which applies a data base of the RIMS (RIMS 데이타를 활용한 전동차 운행 신뢰성 향상방안)

  • Park, Soo-Choong;Lee, Do-Sun;Jeon, Seo-Tak;Son, Young-Jin
    • Proceedings of the KSR Conference
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    • pp.57-64
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    • 2007
  • RIMS(Rolling Stock Information Maintenance System) was installed in structure which it can analyze the data base in need of credibility maintenance. So it could accumulate real data without repulsion of working spot. Information system was installed not following to system but following to working spot. The development of RIMS project was started from March 29, 2001 and it has been operating from October 12, 2004 in Chang-dong Car depot for light maintenance in charge subway line4. So substantial data base was accumulated for three years. This study calculated all RAMS data by analyzing data base accumulated in RIMS and used in dada base about credibility maintenance and found investigation of propriety, expectation of the life cycle cost, the improvement plan on credibility of sorts of cars and formation about the cycle of repairing and maintenance. This got MKBSF MKBF and MTBF about devices and sorts of line4 Rolling Stocks for it.

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The Rolling Stock operation reliability improvement plan which applies a data base of the RIMS (RIMS 데이타를 활용한 전동차 운행 신뢰성 향상방안)

  • Park, Soo-Choong;Lee, Do-Sun;Jeon, Seo-Tak;Son, Young-Jin
    • Proceedings of the KSR Conference
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    • pp.143-150
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    • 2007
  • RIMS(Rolling Stock Information Maintenance System) was installed in structure which it can analyze the data base in need of credibility maintenance. So it could accumulate real data without repulsion of working spot. Information system was installed not following to system but following to working spot. The development of RIMS project was started from March 29, 2001 and it has been operating from October 12, 2004 in Chang-dong Car depot for light maintenance in charge subway line4. So substantial data base was accumulated for three years. This study calculated all RAMS data by analyzing data base accumulated in RIMS and used in dada base about credibility maintenance and found investigation of propriety, expectation of the life cycle cost, the improvement plan on credibility of sorts of cars and formation about the cycle of repairing and maintenance. This got MKBSF MKBF and MTBF about devices and sorts of line4 Rolling Stocks for it.

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A Study on the Motion Base Control by Using Maya (Maya를 이용한 모션 베이스 컨트롤에 관한 연구)

  • Hong, Min-Sung;Kim, Joo-Chul
    • Journal of The Korean Society of Manufacturing Technology Engineers
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    • v.18 no.4
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    • pp.423-429
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    • 2009
  • The motion base to a film used in 4D cinema theaters or theme parks is different depending on the operator's control or hardware system and this causes inefficiency in management of the theater. There are several different simulation software on the present market, but these are difficult for an animation producer to use them. This study introduces the idea in which a film producer simulates the movement of the motion base by using computer graphic animation tools mostly adopted by production for creating 3D animation and motion control data. Maya and 3D Cross were used to show the path of a motion camera visually. Attitude and axis control data were extracted from the movement of the virtual motion base and were used to control a prototype of the motion base. As a result, the motion control data from computer graphic animation tools can be created so that a film producer can create standard motion control data independently regardless of the hardware and operator's skill.

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An Efficient Recovery Method for Mobile Main Memory Database System (모바일 메인메모리 데이터베이스 시스템을 위한 효율적인 복구 기법)

  • Cho, Sung-Je
    • Journal of Information Technology Services
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    • v.7 no.2
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    • pp.181-195
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    • 2008
  • The rapid growth of mobile communication technology has provided the expansion of mobile internet services, particularly mobile realtime transaction takes much weight among mobile fields. There is an increasing demand for various mobile applications to process transactions in a mobile computing fields. Thus, During transmission in wireless networks a base station failure inevitably causes data loss of the base station buffer. It is required to compensate the loss for communication. The existing methods for a base station failure are not adequate because they all suffer from too much overhead and resolve only the link failure. In this paper, we study an efficient recovry systems for a mobile DBMS. We propose SLL (Segment Log List) that enables the mobile host to compensate data loss efficiently in the case of base station failure. In SLL, a base station deliveries an output information of data cells to a mobile host. when a base station fails, the mobile host can retransmit just next data cells. We also prove the efficiency of new method.