• Title/Summary/Keyword: 박종화

Search Result 393, Processing Time 0.029 seconds

A $200-MHz{\circled}a2.5-V$ Dual-Mode Multiplier for Single/Double-Precision Multiplications (단정도/배정도 승산을 위한 $200-MHz{\circled}a2.5-V$ 이중 모드 승산기)

  • 이종남;박종화;신경욱
    • Proceedings of the IEEK Conference
    • /
    • 2000.06b
    • /
    • pp.149-152
    • /
    • 2000
  • A dual-mode multiplier (DMM) that performs single- and double-precision multiplications has been designed. An algorithm for efficiently implementing double-precision multiplication with a single-precision multiplier was proposed, which is based on partitioning double-precision multiplication into four single-precision sub-multiplications and computing them with sequential accumulations. When compared with conventional double-precision multipliers, our approach reduces the hardware complexity by about one third resulting in small silicon area and low-power dissipation at the expense of increased latency and throughput cycles.

  • PDF

Numerical Simulation of Nearshore Current Field - Application to structure of offshore breakwater construction - (해빈류장의 수치 시뮬례이션 - 이안 구조물 건설에의 적용 -)

  • 박종화;이순혁
    • Proceedings of the Korean Society of Agricultural Engineers Conference
    • /
    • 1998.10a
    • /
    • pp.305-310
    • /
    • 1998
  • This research conducted concerning measures for the influence reduction to an investigation in the structure of offshore breakwater maintenance, an evaluation, a reexamination of the forecast, and a peripheral sediment transport environment. Furthermore, it aimed at the establishment of the beach transformation forecast method based on a hydraulic model study and a numeric simulation. A good result was obtained from a hydraulic model experiment and a numeric simulation as part of the basic research. And a qualitative evaluation of the flow field around the structure became possible since a numeric simulation examined flow field characteristics.

  • PDF

Theories and Measurement Techniques for LAI of Crops (밭작물의 엽면적지수(LAI)에 대한 이론 및 측정기술)

  • Park, Jong-Hwa;Lee, Sang-Hyuk;Shin, Yong-Hee;Park, Min-Seo
    • Proceedings of the Korean Society of Agricultural Engineers Conference
    • /
    • 2002.10a
    • /
    • pp.21-24
    • /
    • 2002
  • Many methods are available to measure leaf area index(LAI) directly and are variations of either Leaf area index(LAI) and leaf angle distribution are widely used indices of canopy structure that are difficult to measure directly. Direct measurements of canopy structure are tedious and labor intensive in small canopies and nearly impossible in large forest canopies. This study introduced fundamental theories in LAI measurements and applied that for several crops.

  • PDF

국내 원자력발전소의 수소점화기 제어성능분석

  • Choi, Young;Park, Jong-Hwa
    • Proceedings of the Korean Institute of Industrial Safety Conference
    • /
    • 2003.05a
    • /
    • pp.526-531
    • /
    • 2003
  • 원자력발전소에서는 심각한 사고로 인한 고온상태에서 원자로내부의 물질이 산화반응하여 대량의 수소가 발생한다. 이 때 수소가 폭발하면, 원자력발전소의 건전성에 중대위험이 발생한다. 실제로 미국원자력발전소인 쓰리마일원전(TMI-2) 사고 이후 지금까지 중대사고시 수소거동에 대하여 여러 연구기관에서 많은 연구가 수행되었으나 아직도 많은 기술적 불확실성이 존재한다.(중략)

  • PDF

Temperature Variations in the Sediments and the Concentration of Nutrients in Interstitial Water at the Tidal Flats (간석지 개흙속의 온도변화와 간극수내의 영양염농도 분포특성)

  • Park Jong-hwa
    • KCID journal
    • /
    • v.5 no.2
    • /
    • pp.41-51
    • /
    • 1998
  • Spatial distributional patterns of temperature in the sediments and the concentration of nutrients in interstitial water were particular interests on the ecological research of tidal flats. It was the aim of this paper to grasp inhabiting environment of t

  • PDF