• Title/Summary/Keyword: bench

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Benchmarking Evaluation of Web System Using Fuzzy Sets

  • Jeong, Gu-Beom;Kim, Doo-Ywan;Her, Chol-Hoi
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.4 no.3
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    • pp.292-299
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    • 2004
  • For Web System composed of a variety of hardware, software and network system, there is a wide difference in price, function and capacity. In addition, it is important to select the most suitable system when web system is constructed as the claim of high-quality web service from user has increased. Data of bench-marking is usually employed when the system is selected. Evaluation with the result of bench-marking, however, is not easy at web situation composed of a variety of systems. In this paper, first integrated bench-marking of hardware, software and network system metric were determined, and the plan to effectively compare and evaluate the result of bench-marking by using fuzzy set were offered.

Development of a robust bench-scale testing unit for low-pressure membranes used in water treatment

  • Huang, Haiou;Schwab, Kellogg;Jacangelo, Joseph G.
    • Membrane and Water Treatment
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    • v.2 no.2
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    • pp.121-136
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    • 2011
  • A bench-scale test has recently been proposed as a predictive tool to minimize the scope of pilot-scale testing or to optimize the operation of full-scale membrane filtration systems. Consequently, a bench-scale testing unit was developed for this purpose and systematically evaluated in this study. This unit was capable of accommodating commercially available, low pressure, hollow fiber (LPHF) membranes with various configurations for testing under conditions comparable to real-world applications. Reproducibility of this unit in assessing membrane fouling and microbial removal efficiency of LPHF membranes was tested and statistically comparable results were obtained. This unit serves as a useful apparatus for academic researchers and utilities to evaluate the performance of LPHF membranes used for water treatment.

Study on Characteristics of Car Air-con Compressor Under Bench System Fuel Economy Simulation Condition (벤치 연비 모사 조건에서 차량용 에어컨 압축기의 특성에 관한 연구)

  • Yoo, Seong-Yeon;Kim, Young-Shin
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.36 no.7
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    • pp.705-710
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    • 2012
  • In this study, an experiment on an air conditioning test bench was performed to verify the possibility of fuel economy simulation for the SC03 mode, North America fuel economy certification mode with a/c on condition, one of the vehicle fuel economy evaluation modes. The air conditioning test bench used in this study had each chamber simulating the actual vehicle air conditioning system and the controlling temperature, humidity, and air flow velocity to reproduce environmental conditions. Reliable results were obtained about the compressor RPM and inlet air velocity in front of the condenser corresponding to vehicle speed and air velocity in front of the vehicle, respectively, in the simulation of the SC03 mode, previously performed in CWT, in an air conditioning test bench. It was also discovered that there was a distinct difference in the fuel economy depending on the difference in the compressor displacement in the simulation test of the SC03 mode in the air conditioning test bench under various displacement conditions of the compressor.

The Development of Convergence Bench-making system on length of stay (융복합 재원일수 벤치마킹 시스템 개발)

  • Choi, Youn-Hee;Kim, Yun-Jin;Kang, Sung-Hong
    • Journal of Digital Convergence
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    • v.13 no.5
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    • pp.89-99
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    • 2015
  • This study aims to develop a LOS(Length of Stay) bench-making system that can provide efficient by comparing the LOS management of other hospital and level evaluation for inducing the LOS to manage their own activities. The convergence LOS bench-making web program has been implemented to compare a variety of beds, regional group, followed reporting with excel files downloads by using the severity-adjusted LOS model of Korean National Hospital Discharge in-depth Injury Survey data. Features that are computed in real-time severity-adjusted LOS was also implemented. Trial operating results, bench-making system was confirmed efficient for management of LOS on the long-term care and group of disease in hospital from the staff or medical department, receive requests comparative statistics by area and disease group. Therefore the policy alternative on extension of severity-adjusted LOS is needed to utilized bench-making system on LOS.

Comparison of Number of Repetitions and Repetition Rate in 5 Sets of 65%1RM Bench Press and Biceps Curl Exercise

  • Kim, Ki Hong
    • International Journal of Internet, Broadcasting and Communication
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    • v.14 no.4
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    • pp.163-172
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    • 2022
  • The purpose of this study is to investigate the changes in the number of repetitions and the repetition rate according to the exercise mode when performing 65%1RM resistance exercise at the 1-minute rest interval and the 3-minute rest interval. Sixteen healthy male subjects were treated with Bench press and Biceps curl of 65%1RM intensity at 1 and 3 minute rest intervals. The number of repetitions for each set of 1 minute rest interval showed a significant decrease from 1set to 5set in bench press. biceps curl showed a significant decrease from 1set to 4set. The repetition rate according to the exercise mode with a 1-minute rest interval showed a significant difference from 2sets to 4sets. In the repetition rate for each set, bench press showed a significant decrease from 1set to 5set. biceps curl showed a significant decrease from set 1 to set 4. The number of repetitions according to the exercise mode with a 3-minute rest interval showed a significant difference from 2sets to 5sets. In the number of repetitions for each set, bench press showed a significant decrease from 1set to 5set. biceps curl showed a significant decrease from 1set to 4set. The repetition rate according to the exercise mode with a 3-minute rest interval showed a significant difference from 2sets to 5sets. In the repetition rate for each set, bench press showed a significant decrease from 1 set to 5 sets. biceps curl showed a significant decrease from 1set to 4set. In summary, the decrease in the number of repetitions according to the set progression in the resistance exercise of the endurance depends on the exercise mode, and the increase of the rest interval or the decrease of the weight-intensity should be considered when aiming for more exercise.

Comparison study of the wear metal analysis in oil sample by portable and bench-top XRF (휴대용 및 Bench-Top X-선 형광 분석기를 이용한 오일 시료 중 마찰 금속의 비교 분석)

  • Choi, Soo-Jung;Kim, Chong-Hyeak;Lee, Sueg-Geun;Kim, Dong-Pyo
    • Analytical Science and Technology
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    • v.22 no.5
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    • pp.422-431
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    • 2009
  • The analytical results of wear metals such as Na, Mg, Al, Si, P, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Mo, Ag, Cd, Sn, Ba, Pb in oil samples are compared by portable and bench-top XRF methods as a basic study for the development of portable X-ray fluorescence spectrometer. The instrumental parameters such as measurement time of portable and bench-top XRF were optimized using certified reference materials of hydrocarbon oil with 20 wear metals in concentration range from 10 to 900 mg/kg. The analytical results of 20 wear metals in certified reference materials and new/used engine oil samples were compared by empirical and fundamental parameter methods.