• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.11
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• pp.1536-1543
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• 2004

Garment is made by a 2D pattern and should be fitted to a human body which has 3D characteristics. Therefore, to design a pattern more effectively, the use of 3D information of a human body and the investigation of relationship between the 3D garment and 2D pattern are necessary. In this work, ruled surface method was used to reflect the 3D information of a human body for a pattern design. The images of the brassiere line on the woman's dress form were captured by phase-shifting projection moire system and the 3D information on the design line was obtained. 2D patterns on the various parts of the brassiere were developed directly from the 3D data by the ruled surface method. In addition, design line, the area and the amount of dart were quantified. And then we verify the appropriateness of the ruled surface method to the 2D pattern development by measuring the distribution of the space between women's figure and segmented clothing item. It was found that the ruled surface method is useful to transform the 3D design line to the 2D pattern, if we followed the steps suggested in this paper.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.64 no.10
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• pp.1426-1431
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• 2015

Piezoelectric pump can be considered as R-C load and it needs something special driver because the output voltage does not become 0 even though the applied voltage is 0 with common converter. This operating system consists of fly-back converter to increase the input voltage and energy recovery inverter to apply square voltage to the piezoelectric pump. The energy recovery inverter can charge and discharge the energy of capacitive load. In this paper, to enhance performance of the driver, a few elements or circuits are added and modified. To drive the inverter safely, current limit resister is added and adjusted the value to valance the charging and discharging current. In addition, a current limit inductor is added to the input side to limit the input current and enhance the efficiency. Inductor only may make oscillation and another resister is added parallel to the inductor to solve this problem. The converter and inveter are assembled to one board for compactness. The appropriateness is proved with simulation and experiments.

• Journal of Information Science Theory and Practice
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• v.12 no.1
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• pp.21-38
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• 2024

Infographics are influential and valuable communication tools for providing information, and can be used for promoting cultural learning resources and cultural tourism destinations. Therefore, this article presents values of using infographics for promoting Patum's culture and tourism in Phrao District, Chiang Mai, Thailand as cultural learning resources and tourist attractions. Employing a research and development approach, this study utilized three distinct instruments: (1) an interview form engaging 40 locals to uncover insights on promoting Patum village, (2) an assessment form evaluated by three arts and design experts, and (3) questionnaires distributed to 92 participants to gauge perceptions and satisfaction. The findings showcased the high quality and appropriateness of the eight infographics. Audiences derived six key values, including acquiring knowledge, fostering the promotion of Patum's culture, festivals, religions and beliefs, deriving aesthetic enjoyment, encouraging cultural tourism, contributing to the education sector, and enhancing comprehension of Patum's history. Participants expressed high satisfaction ($\bar{x}$=4.46) with the infographic use. The developed infographics are usable and valuable information to help audiences recognize Patum cultural learning resources and tourist destinations. They might be further tailored to the recognition of Patum village in the near future, affecting the area's development by increasing local people's incomes through cultural learning resources and tourism activities.

• Journal of the Korean Society for Library and Information Science
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• v.50 no.2
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• pp.197-213
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• 2016

This study aims at suggesting mid- and long-term development plan (vision, core values, strategic goals and functional performances, major tasks and detailed action plans for each strategy, organizational and human resources management, shared responsibility with the National Library of Korea which is main library in collection and services of policy information, and cooperation and collaborative exchange programs) for the National Library of Korea, Sejong. This study is based on the appropriateness that the library should enhance its visibility through focusing on the role as the specialized library in charge of public policy information services if it wished to ensure the identity of a branch of the National library of Korea for the comprehensive collection, preservation, and nationwide services of public policy information.

• Annual Conference of KIPS
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• 2010.04a
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• pp.973-976
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• 2010

제안요청서(RFP)는 사업목적 달성을 위해 발주자가 공급자의 제안을 받기 위한 요구사항을 정의한 문서로 프로젝트 목표 수행의 중요한 요소이고, 불명확한 요구사항과 요구의 변경, 외부 수행 작업의 문제, 일정과 예산의 비현실성 등은 프로젝트의 성공적인 수행을 저해하는 위험요인이다. 본 논문에서는 2005년부터 2009년까지 공공 SI(System Integration) 프로젝트의 RFP를 대상으로 첫째, 미국 프로젝트 표준규격인 PMBOK(Project Management Body of Knowleage) 지식 및 관리 프로세스 영역을 적용하여 현황을 분석하였고 둘째, Core와 Support 프로세스 영역을 비교분석하고, 셋째, Core 프로세스의 범위, 일정, 비용 영역에 대해 분석하였다. 연구결과로 공공 SI RFP의 범위, 일정, 비용을 의미한 항목에서 분명한 차이를 보여 보완이 요구되었다. 향후 본 연구를 통해 공공 SI 프로젝트의 RFP 작성시 명확성을 제고하여 프로젝트 성공 수행에 도움이 되도록 하고자 한다.

• Journal of Information Processing Systems
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• v.18 no.3
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• pp.302-310
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• 2022

Efficient use of limited blood products is becoming very important in terms of socioeconomic status and patient recovery. To predict the appropriateness of patient-specific transfusions for the intensive care unit (ICU) patients who require real-time monitoring, we evaluated a model to predict the possibility of transfusion dynamically by using the Medical Information Mart for Intensive Care III (MIMIC-III), an ICU admission record at Harvard Medical School. In this study, we developed an explainable machine learning to predict the possibility of red blood cell transfusion for major medical diseases in the ICU. Target disease groups that received packed red blood cell transfusions at high frequency were selected and 16,222 patients were finally extracted. The prediction model achieved an area under the ROC curve of 0.9070 and an F1-score of 0.8166 (LightGBM). To explain the performance of the machine learning model, feature importance analysis and a partial dependence plot were used. The results of our study can be used as basic data for recommendations related to the adequacy of blood transfusions and are expected to ultimately contribute to the recovery of patients and prevention of excessive consumption of blood products.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.1109-1114
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• 2003

In this paper, task control architecture is proposed for a mobile robot with behaviors based on cognition theory to endow the robot intelligence. In the task control architecture, task manager is introduced especially for the management of computational resource. The management is based on classical RMS (Rate Monotonic Strategy), but with online rate modulation strategy. The rate modulation is performed using the value variances of behavior execution for the task. Because the values are based on natively uncertain sensor information, they are modeled using PDF (probability Density Function). As a rate modulation process, the range of the rate modulation is defined firstly by real-time constraints of RMS and discrete control stability of behaviors. With the allowable range, rate modulations are performed considering harmonic bases to maintain utilization bound without decrease. To evaluate the efficiency of the proposed rate modulation strategy, a simulation test is performed to compare the efficiency between the control architecture with the proposed strategy and previous one. A performance index with the formalization of propensity of resource allocation is proposed and utilized for the simulation test. To evaluate the appropriateness of the performance index, the performance index is compared with practical one through a practical simulation test.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.3
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• pp.1035-1056
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• 2015

The efficiency of live Peer-to-Peer (P2P) streaming protocols depends on the appropriateness and the management abilities of their underlying overlay multicast. While a tree overlay structure confines transmission delays efficiently by maintaining deterministic delivery paths, an overlay mesh structure provides adequate resiliency to peers dynamics and easy maintenance. On the other hand, content freshness, playback fluidity and streaming continuity are still challenging issues that require viable solutions. In this paper, we propose a Hybrid Live P2P Streaming Protocol (HLPSP) based on a hybrid overlay multicast that integrates the efficiency of both the tree and mesh structures. Extensive simulations using OMNET++ are conducted to investigate the efficiency of HLPSP in terms of relevant performance metrics, and position HLPSP with respect to DenaCast the enhanced version of the well-known CoolStreaming protocol. Simulation results show that HLPSP outperforms DenaCast in terms of startup delay, end-to-end delay, play-back delay and data loss.

• Communications for Statistical Applications and Methods
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• v.19 no.6
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• pp.837-847
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• 2012

Inverse Gaussian distribution is widely used in applications to analyze and model right-skewed data. To assess the appropriateness of the distribution prior to data analysis, Mudholkar and Tian (2002) proposed an entropy-based test of fit. The test is based on the entropy power fraction(EPF) index suggested by Gokhale (1983). The simulation results report that the power of the entropy-based test is superior compared to other goodness-of-fit tests; however, this observation is based on the small-scale simulation results on the standard exponential, Weibull W(1; 2) and lognormal LN(0:5; 1) distributions. A large-scale simulation should be performed against various alternative distributions to evaluate the power of the entropy-based test; however, the use of a theoretical method is more effective to investigate the powers. In this paper, utilizing the information discrimination(ID) index defined by Ehsan et al. (1995) as a mathematical tool, we scrutinize the power of the entropy-based test. The selected alternative distributions are the gamma, Weibull and lognormal distributions, which are widely used in data analysis as an alternative to inverse Gaussian distribution. The study results are provided and an illustrative example is analyzed.

• Annual Conference of KIPS
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• 2012.11a
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• pp.1421-1424
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• 2012

SW사업 관련 법령은 공공기관이 SW사업을 진행하는데 반영되고 있고 사기업에도 SW프로젝트를 진행하는데 법적 효력을 가지고 있으며 프로젝트 성공을 위해 중요한 요소로 작용하고 있다. 하지만 잦은 요구사항의 변경, 구체적이지 못한 요구사항, 비현실적인 일정과 예산 등으로 SW프로젝트의 성공을 보장받기 어렵다. 본 논문은 이러한 문제점을 파악하기 위해 SW프로젝트를 수행하는데 근간이 되는 SW관련 주요법령이 SW프로젝트의 성공을 지원할 수 있는가를 연구하였고, 이를 위해 프로젝트관리 국제표준인 ISO 21500(Guidance on Project Management)의 지식 및 관리 영역과 SW관련 주요법령들을 비교하였다. 연구 결과로서 현행 SW 관련 주요법령들에 각각 범위, 시간, 비용, 위험을 의미하는 영역에서 차이를 보여 종합적인 보완이 요구된다. 향후 본 연구를 통해 공공기관이 SW사업 프로젝트를 성공적으로 수행하기위해 관련 법령이 연구결과의 문제성을 명확히 제고토록 하고 공공SW사업은 물론, 국내 SW사업계가 프로젝트를 성공적으로 수행하기 위한 양질의 환경이 될 수 있게 하고자 한다.