• Title/Summary/Keyword: I chart

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Design and Implementation of Mobile Contents to provide Marine Leisure Information (해양레저정보를 제공하기 위한 모바일 콘텐츠의 설계 및 구현)

  • Jeong, Seong-Hoon
    • Journal of Advanced Navigation Technology
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    • v.13 no.1
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    • pp.11-18
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    • 2009
  • As a marine leisure industry has being developed and demands for leisure culture have rapidly increased, the needs for services offering marine safety and related information are growing. Accordingly, in the study I developed the contents providing server to support this with ENC agent who presents geographical information of digitalized Electronic Nautical Chart satisfying with the standard(S-57) by International Hydrographic Organization and a web searching agent who builds a database by collecting marine-related information in order to provide a variety of realtime information such as weather, fishing and news. In addition, I designed and embodied network based mobile contents which can be presented on a WIPI(Wireless Internet Platform for Interoperability) based portable handset by receiving an ENC and other processed information from server. With the results produced by such experiments, I measured a compressibility corresponding to a image compression format of electronic nautical chart transmitted and analyzed the correlation between increase in packets of requested information and the cost.

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An Analysis of Size System and Patterns of Ready to Wear Basic Skirts for Middle Age Women (중년여성 브랜드를 통한 기본 스커트의 치수실태 및 패턴분석)

  • Lee, Jung-Soon;Goo, Mi-Ran
    • Fashion & Textile Research Journal
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    • v.6 no.6
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    • pp.756-764
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    • 2004
  • The purpose of this study is to analyze of size and patterns of ready to wear basic for middle age women. For this purpose, I select 9 brands and analyze the basic skirts size system marketed in 2002 spring in Korea. To study the actual size system, I have compared size labeling, which I researched, with Korean Industrial Standard Size Chart. And I also have compared body measurement with the product size. To study the pattern, I have classified the composition of the skirt into 24 items. The different result shows between this study and Korean Industrial Standard Size Chart. The waist circumference is smaller than it should be, and the hip circumference is larger than it should be. As I have examined the body measurement and the product size, variability of the waist circumference depends on the location of the waistline. For the hip circumference, I have found that both the body measurement and the product size are same, or the product size is smaller than the body measurement. Both cases have been found to be over 67%. I have classified the analysis of the pattern into four components; circumference, relevance to waist line, dart, and length. For the waist circumference, the same size of the front and the back is 44.4%, and making the front larger is 44.4% also. In the hip circumference, the identical size of the front and the back is 66.7% and the larger size of back is 22.2%. Regarding darts placement, it is moved to the side lines from the middle of 1/2 of waist lines, dart intake was 1.3~3.2 cm, the length of darts is 7.2~12.7 cm.

A study of statistical techniques for clinical data about cerebrovascular diseases (중풍임상자료(中風臨床資料)에 대한 통계적(統計的) 분석방법연구(分析方法硏究))

  • Kang, Hyo-Shin;Kwon, Young-Kyu;Park, Chang-Gook;Shin, Yang-Kyu;Kim, Sang-Chul
    • The Journal of Korean Medicine
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    • v.17 no.1 s.31
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    • pp.302-328
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    • 1996
  • I . Objective and significance of the study To design a data acquisition chart, which facilitates data collection and analysis. The chart is also useful for solving problems that arise from personal variations in clinical symptoms and filling the knowledge base of an expert system. II. Content and scope 1. Collect the diagnosis knowledge of cerebrovacular diseases from doctors and analyze it. 2. Design a data acquisition chart. 3. Compare ODS and doctors with respect to their diagnosis results 4. Select patients who are determined to suffer from cerebrovascular diseases using CT(computed tomographic) scan, collect clinical data from them. III. Results and Application The chart be used for data collection and analysis in different medical hospitals, The results of data analysis facilitates collecting clinical data about other diseases and implementing the knowledge base. Also, the collected data serves as a tool for medical education, and cooperative diagnosis of oriental and western medical doctors.

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Comparisons of the Performance with Bayes Estimator and MLE for Control Charts Based on Geometric Distribution (기하분포에 기초한 관리도에서 베이즈추정량과 최대우도추정량 사용의 성능 비교)

  • Hong, Hwiju;Lee, Jaeheon
    • The Korean Journal of Applied Statistics
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    • v.28 no.5
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    • pp.907-920
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    • 2015
  • Charts based on geometric distribution are effective to monitor the proportion of nonconforming items in high-quality processes where the in-control proportion nonconforming is low. The implementation of this chart is often based on the assumption that in-control proportion nonconforming is known or accurately estimated. However, accurate parameter estimation is very difficult and may require a larger sample size than that available in practice for high-quality process where the proportion of nonconforming items is very small. An inaccurate estimate of the parameter can result in estimated control limits that cause unreliability in the monitoring process. The maximum likelihood estimator (MLE) is often used to estimate in-control proportion nonconforming. In this paper, we recommend a Bayes estimator for the in-control proportion nonconforming to incorporate practitioner knowledge and avoid estimation issues when no nonconforming items are observed in the Phase I sample. The effects of parameter estimation on the geometric chart and the geometric CUSUM chart are considered when the MLE and the Bayes estimator are used. The results show that chart performance with estimated control limits based on the Bayes estimator is generally better than that based on the MLE.

Optimal design of a nonparametric Shewhart-Lepage control chart (비모수적 Shewhart-Lepage 관리도의 최적 설계)

  • Lee, Sungmin;Lee, Jaeheon
    • Journal of the Korean Data and Information Science Society
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    • v.28 no.2
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    • pp.339-348
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    • 2017
  • One of the major issues of statistical process control for variables data is monitoring both the mean and the standard deviation. The traditional approach to monitor these parameters is to simultaneously use two seperate control charts. However there have been some works on developing a single chart using a single plotting statistic for joint monitoring, and it is claimed that they are simpler and may be more appealing than the traditonal one from a practical point of view. When using these control charts for variables data, estimating in-control parameters and checking the normality assumption are the very important step. Nonparametric Shewhart-Lepage chart, proposed by Mukherjee and Chakraborti (2012), is an attractive option, because this chart uses only a single control statistic, and does not require the in-control parameters and the underlying continuous distribution. In this paper, we introduce the Shewhart-Lepage chart, and propose the design procedure to find the optimal diagnosis limits when the location and the scale parameters change simultaneously. We also compare the efficiency of the proposed method with that of Mukherjee and Chakraborti (2012).

A Study on Development of Design Chart for Geotextile-reinorced Embankments on Soft Foundations (연약지반상의 토목섬유보강제방의 설계도표개발에 관한 연구)

  • 서인식;허노영
    • Geotechnical Engineering
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    • v.14 no.5
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    • pp.173-180
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    • 1998
  • This paper presents the design chart to evaluate the two-demensional stability of geoteztilereinforcement embankments on soft foundations. The potential failure surface in this study is assumed as the logarithmic spiral curves refracted at the boundary of layers. To facilitate the iterative calculations, a program that determines the geoteztile tensile force for geotextilereinforcement embankments was developed. This program can be used for situations with a variety of soil layers and soil types. And it can be also used for a static or seismic condition. A series of calculations has been made for a schematised situation. The results of these computation are shown in design charts. Considering static or seismic load strate, these charts in the preliminary stage of the design provide a reasonable estimate of geoteztile tensile force for geotextile-reinforcement embankments on softs foundations. In the final swage a more detailed calculation can be made by developed programs.

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Determination of Air Fuel Ratio according to Fuel Composition (I) -Eltinge Chart as a Reference Exhaust Composition- (연료 조성에 따른 공연비 산정 (I) -기준 배기 조성으로서 Eltinge 차트-)

  • Ohm, In-Yong;Park, Chan-Jun
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.27 no.11
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    • pp.1548-1562
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    • 2003
  • This paper is the first of several companion papers which compare the methods of Air-fuel ratio determination. There are many methods which calculate Air-Fuel ratio from exhaust emission. Most of them are based on the simple chemical equations, which use balance of atom, and the error of the calculation is negligible as far as the instrumentation accuracy is guaranteed. They assume homogeneous mixture and complete combustion to the extent of oxygen availability. Because of these simple assumptions, they cannot offer the information about the fuel distribution state and the malfunction of instrument. For these limitations, Eltinge offered new one based on stricter mathematical model. This result coincides with the others very well and gives more information about the mixture state and instrumentation. Consequently this might be a general solution for Air-fuel ratio determination and exhaust composition. The objects of the calculation, however, were not commercial fuels except gasoline and the compensation method of unburned hydrocarbon was not appropriate to recent analyzer. Moreover he did not consider the fuel which contains oxygen, such as methanol, ethanol and blend of gasoline-alcohol. In this paper, Eltinge chart is expanded to the arbitrary fuel composition as the reference exhaust compositions for the purpose of further discussions about Air-fuel ratio determination methods and the charts fur gasoline, diesel, methanol, M85, liquefied petroleum gas(LPG), natural gas(NG), propane, butane are illustrated.

CUSUM Chart Applied to Monitoring Areal Population Mobility (누적합 관리도를 활용한 생활인구 이상치 탐색)

  • Kim, Hyoung Jun;Sohn, So Young
    • Journal of Korean Society for Quality Management
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    • v.48 no.2
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    • pp.241-256
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    • 2020
  • Purpose: Certain places in Seoul such as Shinchon, Hongdae, and Gangnam, often suffer from sudden overflow of mobile population which can cause serious safety problems. This study suggests the application of spatial CUSUM control chart in monitoring areal population mobility data which is recently provided by Seoul metropolitan government. Methods: Monitoring series of standardized local Moran's I enables one to detect spatio-temporal out-of-control status based on the accumulation of past patterns. Moreover, we visualize such pattern map for more intuitive comprehension of the phenomenon. As a case study, we have analyzed the female mobility population aged 25 to 29 appeared in 51 Jipgyegu near Hongik university on fridays from January, 2017 to June, 2018. They are validated by exploring related articles and through local due diligence. Results: The results of the analysis provide insights in figuring out if the change of the mobility population is short-term by particular incident or long-term by spatial alteration, which allows strategic approach in constructing response system. Specific case near popular downtown near Hongik University has shown that newly opened hotels, shops of global sports brand and franchise bookstores have attracted young female population. Conclusion: We expect that the results of our study contribute to planning effective distribution of administrative resources to prepare against drastic increase in floating population. Furthermore, it can be useful in commercial area analysis and age/gender specific marketing strategy for companies.

Evaluation for Rock Cleavage Using Distribution of Microcrack Spacings (V) (미세균열의 간격 분포를 이용한 결의 평가(V))

  • Park, Deok-Won
    • The Journal of the Petrological Society of Korea
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    • v.26 no.3
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    • pp.297-309
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    • 2017
  • Jurassic granite from Geochang was analysed with respect to the characteristics of the rock cleavage. The comprehensive evaluation for rock cleavages was performed through the combination of the 16 parameters derived from the enlarged photomicrographs of the thin section and the spacing-cumulative frequency diagrams. The results of analysis for the representative values of these spacing parameters with respect to the rock cleavage are summarized as follows. First, the above parameters can be classified into group I (spacing frequency (N), total spacing ($1m{\geq}$), constant (a), exponent (${\lambda}$), slope of exponential straight line (${\theta}$), length of line (oa') and trigonometric ratios ($sin{\theta}$, $tan{\theta}$) and group II (mean spacing (Sm), difference value between mean spacing and median spacing (Sm-Sme), density (${\rho}$), lengths of lines (oa and aa'), area of a right-angled triangle (${\Delta}oaa^{\prime}$) and trigonometric ratio($cos{\theta}$). The values of the 8 parameters belonging to group I show an order of H(hardway, H1+H2)

A Study on the Urban Transit Vehicle Reliability Improvement Method using Quality Control Technique (품질관리기법을 이용한 도시철도차량 신뢰도 향상방안 연구)

  • Park, Kee-Jun
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.860-869
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    • 2011
  • It is very important that reduce the maintenance cost and extend life time of the urban transit EMU through effective maintenance method research. The maintenance cost of the urban transit EMU shares 60%~70% of it's life cycle cost. It means that the maintenance cost is bigger than the introduction cost of the urban transit EMU. In this study, I introduces a quality control technique to improve the urban transit vehicle reliability. I suggest the control chart using quality control technique. And the control charts apply to the Static Inverter of EMU.

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