• 제목/요약/키워드: sensitivity study

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A Study on Sensitivity Analysis by Fuzzy Inference Rules Using Color and Location Information

  • Kim, Kwang-Baek;Woo, Young-Woon
    • Journal of information and communication convergence engineering
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    • v.7 no.3
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    • pp.268-274
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    • 2009
  • Human beings can represent state of mind such as psychological state, personality or emotional trouble by the pictures painted on one's own initiative. But in general, it is hard to understand a consulter's unconscious state through one's objective and intentional descriptions only. So one's psychological state and emotional trouble can be understood and cured by color and location information of objects drawn in one's picture. By this reason, a consultant can help and settle a consulter's growth stages of life and emotional trouble through treatment by pictures. In this paper, we proposed a method to find out state of sensitivity by analysis of color and location information represented in a picture and fuzzy inference rules. We applied the proposed method to the states of sensitivity from color information proposed by Alschuler and Hattwick and the psychological states from location information proposed by Grunwald. In the experimental results by the two applications, we verified the proposed sensitivity analysis method is efficient.

Sensitivity Analysis of ILLUDAS Model Parameters Based on Rainfall Conditions (강우조건이 ILLUDAS 모형 매개변수의 민감도에 미치는 영향 분석)

  • Lee, Jong Tae;Kim, Tae Hwa
    • Journal of Korean Society of Water and Wastewater
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    • v.18 no.6
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    • pp.748-757
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    • 2004
  • In this study, we analyzed the sensitivity of parameters which affect the result of ILLUDAS model, in the various rainfall conditions. The three basins including Namgaja, Kings creek, Gray haven were selected for this research. The rainfall conditions are considered in terms of the rainfall frequency, the duration and the distribution. In most cases, the impermeability area ratio, the sewer slope, and the sewer roughness coefficient give more significant effects on the results than others. The results show that as increasing the rainfall frequency, the sensitivity of the parameters, sewer slope and roughness coefficient are rised, while the impermeability area ratio is decreasing. And also, for the duration of rainfall, the impermeability area ratio's sensitivity shows similar tendency. In case of the rainfall distribution, the parameters of the sewer roughness and the impermeability area ratio show more sensitive in Huff distribution. Especially, The impermeability area ratio is the most sensitive parameter in Central blocking and Yen & Chow distributions respectively.

Antibiotic sensitivity and resistance of bacteria from odontogenic maxillofacial abscesses

  • Kang, Sang-Hoon;Kim, Moon-Key
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.45 no.6
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    • pp.324-331
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    • 2019
  • Objectives: This study investigated the types and antibiotic sensitivity of bacteria in odontogenic abscesses. Materials and Methods: Pus specimens from 1,772 patients were collected from affected areas during incision and drainage, and bacterial cultures and antibiotic sensitivity tests were performed. The number of antibiotic-resistant bacteria was analyzed relative to the total number of bacteria that were tested for antibiotic susceptibility. Results: Bacterial cultures from 1,772 patients showed a total of 2,489 bacterial species, 2,101 gram-positive and 388 gram-negative. For penicillin G susceptibility tests, 2 out of 31 Staphylococcus aureus strains tested showed sensitivity and 29 showed resistance. For ampicillin susceptibility tests, all 11 S. aureus strains tested showed resistance. In ampicillin susceptibility tests, 46 out of 50 Klebsiella pneumoniae subsp. pneumoniae strains tested showed resistance. Conclusion: When treating odontogenic maxillofacial abscesses, it is appropriate to use antibiotics other than penicillin G and ampicillin as the first-line treatment.

Effects of Ginseng Saponins on Cocaine-Induced Hyperactivity, Reverse Tolerance and Dopamine Receptor Super-sensitivity in Mice (코카인으로 유도된 행동과다, 역내성 및 Dopamine 수용체 초과민성에 미치는 인삼 Saponin의 효과)

  • 김학성;정주연
    • Journal of Ginseng Research
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    • v.19 no.2
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    • pp.101-107
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    • 1995
  • The present study was undertaken to examine the effects of ginseng saponins [ginseng total saponin (GTS), protopanaxadiol saponin (PD) and protopanaxatriol saponin (PT)] on the hyperactivity, reverse tolerance and dopamine receptor super-sensitivity induced by cocaine. A single treatment with cocaine produced hyperactivity. Repeated administration of cocaine developed reverse tolerance and dopamine receptor super-sensitivity was also developed in reverse tolerant mice which had received the same cocaine. The hyperactivity and the developments of reverse tolerance and dopamine receptor super-sensitivity by cocaine were inhibited by ginseng saponins. From these results, it is proposed that ginseng saponins may be useful for the prevention and therapy of the adverse actions of cocaine. In addition, the rank order of inhibitory potential was observed as PT>GTS>PD. Key words Cocaine, hyperactivity, reverse tolerance, dopamine receptor super-sensitivity, ginseng saponins.

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Sensitivity Analysis of Building Envelope of Non-Dwelling Buildings (비주거 건축물의 외피요소에 대한 민감도 분석)

  • Kim, Kyung-Ah;Park, Jin-Seo;Yu, Ki-Hyung;Moon, Hyeun-Jun
    • Journal of the Korean Solar Energy Society
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    • v.35 no.1
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    • pp.53-60
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    • 2015
  • The ECO2 building energy simulation program is used on the assessment project for building energy certification of non-dwelling buildings in Korea. In the design of energy efficient buildings, it is beneficial to identify the most important design parameters in oder to more efficiently develop alternative design solutions or reach optimized design solutions. The sensitivity analyses will be used at a reasonable early stage of the building design process, where it is still possible to influence the most important design parameters. In this study, the sensitivity analysis is focused on building envelope parameters such as U-values, SHGC and Wall-window ration.

Effectiveness of Sensitivity Analysis for Parameter Selection in CLIMEX Modeling of Metcalfa pruinosa Distribution

  • Byeon, Dae-hyeon;Jung, Sunghoon;Mo, Changyeun;Lee, Wang-Hee
    • Journal of Biosystems Engineering
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    • v.43 no.4
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    • pp.410-419
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    • 2018
  • Purpose: CLIMEX, a species distribution modeling tool, includes various types of parameters representing climatic conditions; the estimation of these parameters directly determines the model accuracy. In this study, we investigated the sensitivity of parameters for the climatic suitability calculated by CLIMEX for Metcalfa pruinosa in South Korea. Methods: We first changed 12 parameters and identified the three significant parameters that considerably affected the CLIMEX simulation response. Results: The result indicated that the simulation was highly sensitive to changes in lower optimal temperatures, lower soil moisture thresholds, and cold stress accumulation rate based on the sensitivity index, suggesting that these were the fundamental parameters to be used for fitting the simulation into the actual distribution. Conclusion: Sensitivity analysis is effective for estimating parameter values, and selecting the most important parameters for improving model accuracy.

A Study on Furniture Patterns Appealing to Emotions (감성에 소구(訴求)하는 가구조형의 패턴 연구)

  • Kim, Doo-Young;Kim, Myeong-Tae
    • Journal of the Korea Furniture Society
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    • v.25 no.4
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    • pp.338-344
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    • 2014
  • Modern furniture design is advancing by putting value on individual sensitivity. Accordingly, this study will focus on optical art, which can give various changes in people's sensitivity. Optical art was actively applied in various fields of image, photograph, fashion, textile, accessory and interior from the 1950s till the 1960s. Optical art realized by Victor Vasarely (1908~) opened a new trend in art by accurately realizing concise and precise expressions. This study analyzed the impact of pattern expression on sensitivity in optical art and suggested a method, which can spatiotemporally maximize the emotional change by combining optical art with the form of furniture. Modern furniture design is changing toward the direction of fitting to the propensity and emotional taste of an individual. Accordingly, this study analyzed the emotional expression felt in the furniture modeling works featured by concise, straight and standardized rectangular shape. Based on the result of analysis, this study would like to suggest a method to utilize optical pattern as a means for emotional design, with which people are able to perform various emotional expressions while keeping the function and form of furniture.

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The Effects of Ecology Club Mentor Activities of Pre-service Teachers on Elementary Student's Environmental Sensitivity and Environment-friendly Attitudes (초등예비교사의 생태동아리 멘토 활동이 초등학생의 환경감수성 및 환경친화적 태도에 미치는 효과)

  • Lee, Yongseob
    • Journal of the Korean Society of Earth Science Education
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    • v.8 no.3
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    • pp.378-386
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    • 2015
  • This study is to find out that pre-service elementary teacher's the effects of a ecology mentor club activities to the environmental sensitivity and the effects on the environment friendly attitude of elementary school students. This study has been aimed at 25 students of 5th grade in B metropolitan city S elementary school in 2015, B educational University of elementary pre-service teachers 10 people, Elementary School Teachers10 people to apply a ecology club mentor activities to investigate a comment participated in environmental mentor club activities of elementary pre-service teachers and the environmental sensitivity and the effects on the environment friendly attitude of elementary school students. Procedures for this research was the topic for setting ecology club mentor activities of elementary school students, pre-service elementary school teachers receive consultation from field teachers and guide to ecology club mentor activities of elementary school students. Before the ecology club mentor activities, pre-test environmental sensitivity and the environment-friendly attitude of were carried out. After the experiment, post-test of environmental sensitivity and environmental friendly attitude check was carried out. Also, investigate a comment of pre-service elementary teachers participate and guide to ecology club mentor activities of elementary school students. After the experiment results are as follows. First, the ecology club mentor activities of pre-service elementary school teachers are effective to cultivate environmental sensitivity of the elementary school students. Second, the ecology club mentor activities of pre-service elementary school teachers are effective to cultivate eco-friendly attitude of the elementary school students. Third, after ecology club mentor activities of elementary school students, pre-service elementary school teachers now have a very good feeling. Based on these results, suggestions for further research are as follows. First, the variety of ecological club programs target to elementary school students are needed. Second, there is a need for continuing research on the ecology club activities.

Evaluation of Relative Emission of Image Plate by Using Relative Sensitivity in Computed Radiography System (컴퓨터 방사선영상시스템에서 비감도를 이용한 영상판의 상대적 발광량 평가)

  • Seoung, Youl-Hun
    • The Journal of the Korea Contents Association
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    • v.14 no.11
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    • pp.355-361
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    • 2014
  • The aim of the present study was to evaluate a relative emission of image plate (IP) in computed radiography (CR) system by using relative sensitivity in film/screen methods. The characteristic curve was obtained by using the uniform aluminum 11-step wedge penetrometer. X-ray exposure factors on radiographic digital image were 50 kVp, 10 mAs. We adjusted zero of all parameter of algorithms (MUSICA) so proximate to raw data and applied to 200 of exposure class. Modeling on relative emission of IP are used IP without fading time and IP after 4 hours, 8 hours, 12 hours, 24 hours in the respective storage after X-ray exposure. The results of this study showed that the sensitivity point density at the measuring of relative sensitivity in CR was suited pixel values of the 2000 easy to relatively measure the characteristic curve and when relative sensitivity is decreased, the amount of light emitted from the image signal for generating was also decreased. In conclusion, the proposed method of measurement of relative sensitivity can be utilized to evaluate the quantity of relative emission of IP in CR system.

Development of Analysis Model and Sensitivity Analysis for High-Power Hydraulic Drifter Design (고출력 유압 드리프터 설계를 위한 해석모델 개발 및 민감도 분석)

  • Noh, Dae-Kyung;Lee, Dae-Hee;Yun, Joo-Seop;Lee, Dong-Won
    • Journal of the Korea Society for Simulation
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    • v.27 no.2
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    • pp.11-24
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    • 2018
  • The purpose of the present study is to develop an analysis model to analyze the design parameter sensitivity of a high-power drifter suitable for implementation in Korean hydraulic drills. This study aims to establish a basis for the optimization of the impact performance and stability of a high-power drifter by investigating the effects of each design parameter on the impact performance via design parameter sensitivity analysis. To begin, an analysis model of drifter dynamics is developed, and the reliability of the analysis model is verified by comparing the analysis results to the experimental results. The drifter is then redesigned for compatibility with Korean hydraulic drills. Finally, design parameter sensitivity analysis of the redesigned drifter is conducted to determine the effects of the design parameters on the impact performance, and to extract the high-sensitivity parameters. SimulationX, which is multi-physics analysis software, is used to develop the analysis model, and EasyDesign is employed for design parameter sensitivity analysis.