• Title/Summary/Keyword: Box-Plot

Search Result 102, Processing Time 0.024 seconds

An Investigation of the Spatial Transition in Naju City via Space Syntax Framework (나주시 공간구조 변화에 관한 공간구문론적 고찰)

  • Byeong-Sam OH;Nae-Young CHOEI
    • Journal of the Korean Association of Geographic Information Studies
    • /
    • v.26 no.1
    • /
    • pp.114-131
    • /
    • 2023
  • The study empirically delves into the longitudinal transition of the urban core of Naju City in Korea. For the purpose, the ASA (Angular Segment Analysis) technique of Space Syntax has been adopted to investigate the cadastral maps on the GIS platform for the five chosen years since 1920. In particular, the global integration map as well as box plot statistics have been used to capture the time-series consequences. The findings indicate that the old downtown is no more a monocentric city core and the center of the City has far moved eastward near the new Gwangju-Jeonam Innovation City especially during the period between 2000 and 2020.

Analysis on Immersion of Digital Animation -Focused on complex analysis on the concept and story- (디지털 애니메이션의 몰입감 분석 연구 - 콘셉트와 스토리의 복합적 분석을 중심으로 -)

  • Kim, Ki Bum;Kim, Kyoung Soo
    • Korea Science and Art Forum
    • /
    • v.24
    • /
    • pp.1-13
    • /
    • 2016
  • The aim of this study is to find the reasons of success and failure of digital animations in terms of 'immersion.' For the purpose, the causes of immersion were analyzed through complex comparison about concepts and stories of two animation films with similar size of budget: 'Shrek 2' which ranked number 1 in the box-office of animation and 'Mars Needs Moms' which ranked number 172 in the same category. The complex results showed that immersion becomes bigger with creativity and popularity of the characters' outer concept, diversity and organic of the characters' inner concept, and diversity and consistency of the background. Moreover, gradual arrangement of characters' appearance in the story and increasing number of the characters, and visual changes around the plot heightening with a well-organized passage increase immersion. After all, immersion of digital animation requires developing creative, diverse, and popular concept and arranging and strengthening strategic well-organized plot of parts and the whole. This is the key to convergence it.

Development of a building materials database; Volatile organic compounds, formaldehyde emission rates and chemical compositions (건축자재의 오염물질 방출 데이터베이스 개발; 휘발성유기화합물, 폼알데하이드 방출강도 및 화학조성)

  • Yu, Young-Jae;Lee, Chul-Won;Kim, Man-Goo
    • Analytical Science and Technology
    • /
    • v.22 no.1
    • /
    • pp.57-64
    • /
    • 2009
  • A material database has been developed for VOCs and formaldehyde emitted from building materials in this study. New classification system has been made by correlating the classification methods used in Korean Air Cleaning and Environmental Protection Agency. The developed databases include emission rates of TVOC, 5VOC and formaldehyde emitted from each building material. In addition, the databases can be used as an input variable to estimate indoor air quality (IAQ) using computer simulation since they also contain chemical component and general imformation. Box plot was used to do statistical analysis for emission rates of formaldehyde and TVOCs from different types of building materials. Also we confirmed the building materials worsening IAQ by categorizing the emission characteristic of different types of pollutants.

Vibration and Buckling Characteristics for Composite Rectangular Plates Stiffened with Box Beam Stiffeners (상자형 보로 보강된 복합재료 사각판의 진동 및 좌굴특성)

  • Kim, Young-Wann;Chung, Kang
    • Composites Research
    • /
    • v.13 no.6
    • /
    • pp.9-22
    • /
    • 2000
  • The Rayleigh-Ritz procedure based on energy method is used to present analytically the natural frequencies and the critical buckling loads for four types of loading conditions: (1) uniaxial, (2) biaxial, (3) positive shear and (4) negative shear, of the rectangular, composite plates unidirectionally stiffened with box beam type stiffeners. In analysis the discrete stiffener theory is adopted to present the effect of stiffeners in the plate structure. The convergence study is presented to demonstrate the accuracy of the results. Contour plots of the vibrated and buckled mode shapes are shown for some examples. The effect of various parameters such as numbers, position, aspect ratio of stiffener and layer angle, aspect ratio of plate are focused.

  • PDF

Experimental Analysis of Bankruptcy Prediction with SHAP framework on Polish Companies

  • Tuguldur Enkhtuya;Dae-Ki Kang
    • International journal of advanced smart convergence
    • /
    • v.12 no.1
    • /
    • pp.53-58
    • /
    • 2023
  • With the fast development of artificial intelligence day by day, users are demanding explanations about the results of algorithms and want to know what parameters influence the results. In this paper, we propose a model for bankruptcy prediction with interpretability using the SHAP framework. SHAP (SHAPley Additive exPlanations) is framework that gives a visualized result that can be used for explanation and interpretation of machine learning models. As a result, we can describe which features are important for the result of our deep learning model. SHAP framework Force plot result gives us top features which are mainly reflecting overall model score. Even though Fully Connected Neural Networks are a "black box" model, Shapley values help us to alleviate the "black box" problem. FCNNs perform well with complex dataset with more than 60 financial ratios. Combined with SHAP framework, we create an effective model with understandable interpretation. Bankruptcy is a rare event, then we avoid imbalanced dataset problem with the help of SMOTE. SMOTE is one of the oversampling technique that resulting synthetic samples are generated for the minority class. It uses K-nearest neighbors algorithm for line connecting method in order to producing examples. We expect our model results assist financial analysts who are interested in forecasting bankruptcy prediction of companies in detail.

Prediction of Future Sea Surface Temperature around the Korean Peninsular based on Statistical Downscaling (통계적 축소법을 이용한 한반도 인근해역의 미래 표층수온 추정)

  • Ham, Hee-Jung;Kim, Sang-Su;Yoon, Woo-Seok
    • Journal of Industrial Technology
    • /
    • v.31 no.B
    • /
    • pp.107-112
    • /
    • 2011
  • Recently, climate change around the world due to global warming has became an important issue and damages by climate change have a bad effect on human life. Changes of Sea Surface Temperature(SST) is associated with natural disaster such as Typhoon and El Nino. So we predicted daily future SST using Statistical Downscaling Method and CGCM 3.1 A1B scenario. 9 points of around Korea peninsular were selected to predict future SST and built up a regression model using Multiple Linear Regression. CGCM 3.1 was simulated with regression model, and that comparing Probability Density Function, Box-Plot, and statistical data to evaluate suitability of regression models, it was validated that regression models were built up properly.

  • PDF

Feature Extraction for Fault Signals of High Voltage Motor Stator Windings (고압전동기 결함신호의 특징추출에 관한 연구)

  • Park, Jae-Jun;Kim, Hee-Dong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 2004.07b
    • /
    • pp.1154-1157
    • /
    • 2004
  • During normal machine operation, partial discharge(PD) measurements were performed with turbine generator analyzer(TGA) in imitation stator winding of high voltage motors. The motor was energized to 4.47kV, 6.67, respectively. Applied voltage to Imitation winding was used two voltage level, 4.47[KV]and 6.67[KV]. Motors having imitation stator winding were installed with 80pF capacitive couplers at the terminal box Case of PD Pattern regarding applied voltage phase angel, the PD patterns were displayed two dimensional and three dimensional. TGA summarizes each plot with two quantities such as the normalized quantity number(NQN) and the peak PD magnitude(Qm). As the result, we could discrimidate using TGA the difference of internal and surface discharge for imitation stator winding. We have used the other technique, in order to feature extraction of faulty signals on stator winding, Daubechies Discrete wavelet transform and Harmonics analysis(FFT) about faulty signals.

  • PDF

Development of a Simulation Program for Virtual Laser Machining (가상 레이저가공 시뮬레이션 프로그램 구축)

  • Lee Ho Yong;Lim Joong Yeon;Shin Kui Sung;Yoon Kyung Koo;Whang Kyung Hyun;Bang Se Yoon
    • Journal of the Korean Society for Precision Engineering
    • /
    • v.22 no.7 s.172
    • /
    • pp.54-61
    • /
    • 2005
  • A simulator for virtual laser machining is developed to help understanding and predicting the effects of machining parameters on the final machined results. Main program is based on the model for polymer ablation with short pulse excimer lasers. Version f of the simulator is built using Visual Fortran to make the user work under visual environment such as Windows on PC, where the important machining parameters can be input via dialog box and the calculated results for machined shape, beam fluence, and temperature distribution can be plotted through the 2-D graphics windows. Version II of the simulator is built using HTML, CGI and JAVA languages, allowing the user to control the input parameters and to see the results plot through the internet.

Analysis of On-Line Partial Discharge Trend in High Voltage Motors (고압전동기 운전중 부분방전 추이 분석)

  • Kim, Hee-Dong;Kong, Tae-Sik;Kim, Chung-Hyo
    • Proceedings of the KIEE Conference
    • /
    • 2006.07c
    • /
    • pp.1472-1473
    • /
    • 2006
  • During normal machine operation, partial discharge(PD) measurements were peformed with turbine generator analyzer(TGA) in two high voltage motors(rated 6.6 kV). These high voltage motors were installed with 80 pF capacitive couplers at the terminal box. TGA summarizes each plot with two quantities such as the normalized quantity number(NQN) and the peak PD magnitude (Qm). The trend analyses of NQN and $Q_m$ value are available for monitoring of the insulation condition in stator windings of high voltage motors.

  • PDF

Analysis of Insulation Aging in Operating High Voltage Motors (운전중인 고압전동기에서 절연열화 분석)

  • Kim, Hee-Dong;Ju, Young-Ho
    • Proceedings of the KIEE Conference
    • /
    • 2005.07c
    • /
    • pp.2175-2178
    • /
    • 2005
  • During normal machine operation, partial discharge(PD) measurements were performed with turbine generator analyzer(TGA) in five high voltage motors(rated 6.6kV). These high voltage motors were installed with 80pF capacitive couplers at the terminal box. The PD patterns were displayed two dimensional and three dimensional. TGA summarizes each plot with two quantities such as the normalized quantity number(NQN) and the peak PD magnitude(Qm). Off-line PD measurements were conducted on five motors. These motors were energized to 3.81kV. The PD levels in pC were measured with a conventional digital PD detector. The comparison of positive to negative PD indicates whether the defect elements of PD are within the insulation or on the insulation surface. Internal discharges were generated in phase A, B and C of COP-B and pulv.-B, in phase B of Pulv. C and in phase C of Pulv.-D motor. Discharge at conductor surface was discovered in phase A of Pulv. D motor. Slot discharges occurred in three phases of Pulv. E motor.

  • PDF