• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제17권4호
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• pp.57-68
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• 2011

The purpose of this study is to provide the planning factors of housing for the disabled and elderly based on the inclusive housing design as sustainable neighborhood. The goal of inclusive design is to make buildings and communities more livable for all type of people. Inclusive design should embrace other good design goals and reinforce them, not work against them. To carry out this purpose, we should proceed in the following way: First, we deducted the four design factors (the basic, recommendable, adaptable, and residential factors) by reviewing the characteristics of inclusive housing concepts. Second, we analyzed the related foreign design standards and guidelines such as the ICC/ANSI A117.1 Type C Units (the United States, 2009), Lifetime Standard (the United Kingdom, 2010), and Livable Housing Design Guideline (the Australian, 2010) through four design factors based on inclusive design concepts. Finally, we suggested the housing design factors for the disabled and the elderly in Korea. To conclude, we can make the followings: It is important basic factor that the bedroom and bathroom layout closed to each other. Also, the bedroom has the proper height of light switches, outlets, and windows. The recommendable factors take into consideration stairs and ramp, if existent. The adaptable factors are closely related to domestic housing culture as well as residential factors. Proceeding from this fact, the livability for people with disabilities and older requires accessibility and adaptability that take into account public and efficiency considering the current trend of housing development and urban planning.

• 대한기계학회논문집A
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• 제28권9호
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• pp.1408-1414
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• 2004

The use of flip-chip technology has many advantages over other approaches for high-density electronic packaging. ACF (anisotropic conductive film) is one of the major flip-chip technologies, which has short chip-to-chip interconnection length, high productivity, and miniaturization of package. In this study, thermal fatigue lift of ACF bonding flip-chip package has been predicted. Elastic and thermal properties of ACF were measured by using DMA and TMA. Temperature dependent nonlinear hi-thermal analysis was conducted and the result was compared with Moire interferometer experiment. Calculated displacement field was well matched with experimental result. Thermal fatigue analysis was also conducted. The maximum shear strain occurs at the outmost located bump. Shear stress-strain curve was obtained to calculate fatigue life. Fatigue model for electronic adhesives was used to predict thermal fatigue life of ACF bonding flip-chip packaging. DOE (Design of Experiment) technique was used to find important design factors. The results show that PCB CTE (Coefficient of Thermal Expansion) and elastic modulus of ACF material are important material parameters. And as important design parameters, chip width, bump pitch and bump width were chose. 2$^{nd}$ DOE was conducted to obtain RSM equation far the choose 3 design parameter. The coefficient of determination ($R^2$) for the calculated RSM equation is 0.99934. Optimum design is conducted using the RSM equation. MMFD (Modified Method for feasible Direction) algorithm is used to optimum design. The optimum value for chip width, bump pitch and bump width were 7.87mm, 430$\mu$m, and 78$\mu$m, respectively. Approximately, 1400 cycles have been expected under optimum conditions. Reliability analysis was conducted to find out guideline for control range of design parameter. Sigma value was calculated with changing standard deviation of design variable. To acquire 6 sigma level thermal fatigue reliability, the Std. Deviation of design parameter should be controlled within 3% of average value.

• 한국강구조학회 논문집
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• 제18권1호
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• pp.71-80
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• 2006

강판 전단패널의 거동이 일반연강 (S400) 을 이용한 실험 및 해석으로 고찰되었다. 강판 전단패널은 작은 하중에서 좌굴을 하지만, 패널의 전단극한강도는 인장력 작용에 의한 강판 전단패널의 좌굴후 강도에 의해 좌우된다. 그러나, 설계상에서 강판 전단패널의 성능은 강판 전단패널의 탄성좌굴강도에 국한된다. 캐나다 극한강도 설계 규준 (CAN/CSA-S16.1-94)은 스트립 모델을 이용한 박강판 전단패널의 해석을 위한 절차를 규정하고 있다. 본 논문에서는 실험결과와 스트립모델 해석 결과를 이용하여 강판 전단패널의 구조성능을 평가하였다.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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• pp.337-344
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• 2012

Today, the number of super tall buildings are under construction or being planed in Middle East and Asian Countries. For example the burj Khalifa, the tallest building in the world, is completed in 2008 and the height of that is about 800m. Also, Lotte World Tower is under construction in Korea. External environmental conditions such as wind speed, air temperature, humidity and solar radiation around the super tall building differs according to the building height due to the vertical micro climate change. However, the meteorological information used for AC design of building is obtained typically from standard surface meterological station data(~2m above the ground). In this paper the effect of the building envelope on heating and cooling load in super tall building considering the meteorological changes with height was analyzed with simulation method. As results of this research, the guideline to select the building envelop alternatives for super tall building will be suggested in this paper.

• 한국IT서비스학회지
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• 제7권3호
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• pp.97-114
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• 2008

Many companies have implemented ERP systems to enhance their process competitiveness. Since most ERP systems down to date are implemented and managed on each separated business-unit or company level, such systems run short of the consideration about global business processes and global system managements. In order to integrate a successful global ERP, it is essential to apply the well-systematic implementation methodology which considers global standardization and global IT requirements. It is, however, the actual circumstance that such well-structured methodologies for global ERP implementation are hardly shown not only from domestic site but from foreign one. This paper indicates the global ERP implementation guideline with integrated approach including; the standard process design for efficient execution of global business; the ERP implementation method considering global IT requirements; and, the management method for global system operation. GSI ERP methodology is composed of 3 Phase：Global Strategy Planning, Global Template Construction and Global Roll-Out. Phase1; Global Strategy Planning contains Environment Analysis, GSI direction and Implementation Plan. Phase2; Global Template Construction contains Business blueprint, GSI operation design and Global template implementation. Phase3; Global Roll-out contains local business analysis, local ERP implementation and Global ERP Operation.

• 한국통신학회논문지
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• 제29권9A호
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• pp.1005-1012
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• 2004

본 논문에서는 W-CDMA 단말기 표준안에서 요구하는 최소 성능을 분석하고 현재 상용화되어 있는 부품들을 사용하여 W-CDMA 단말기 수신부를 설계 및 제작하였다 표준안의 테스트 조건들로부터 수신 시스템의 최대 잡음지수와 IIP3 을 도출하였으며, 인접채널에 대한 선택도 및 프콘트 -엔드 단의 최소 성능을 경쟁하였다 제작에 앞 서 ADS 를 이용하여 성능검증을 하였으며 , 모두 분석된 최소성능을 만족하였다. 끝으로 W-CDMA 단말기 수신부 를 헤테로다인 구조로 R 단에서 IF 단까지 제작하였으며, 측정을 하였다 따라서 본 논문이 W-CDMA 단말기를 제작함에 있어 이론적인 설계 기준이 될 것으로 여겨진다.

• 한국자동차공학회논문집
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• 제14권5호
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• pp.145-154
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• 2006

Each part of drum brake system is loaded by continual mechanical force and thermal force every time of braking, so enough strength and stability are required. Thermal characteristic is one of the important factors in drum brake systems design. This paper presents the thermal performance such as temperature distribution and thermal contact stress of drum brake system considering several braking patterns; 80th heat braking test mode, heat fade braking test mode, general road mode, steep slope road mode and off road mode. Transient heat transfer analysis and Thermo elastic contact analysis is executed to obtain the temperature distribution, and to evaluate thermal stress of drum brake by using ABAQUS/Standard code. This procedure of analysis can effectively be used to improve the quality problem of brake system and to get design guideline of the new product.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제21권1호
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• pp.47-56
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• 2015

Purpose : As the number of the transportation poor has increased, the application of Universal Design on urban railway station has recently been focused. However, the current criteria used in domestic areas did not show the characteristic of facilities within urban railway station. Therefore, this study aims to explore the detailed criteria in applying ideas from Universal Design to sanitary facilities, especially toilets within railway station. Method : This study explores the criteria by evaluating findings from previous studies. First, the current situation of sanitary facilities in railway station is assessed. Then, the detailed criteria applicable to railway station toilets are concluded, by reviewing types of transportation poor and principles of Universal Design. Result : Findings from this study are as follows. First, the current criteria applied to railway station toilets lack ideas of Universal Design, so the better criteria applicable to sanitary facilities in railway station are necessary. Second, standard criteria used in domestic areas with newly additional criteria suggest that sanitary facilities should be established according to those criteria. Taken together, the better sanitary facilities should be provided to railway users through the application of Universal Design to railway station toilets. Implication : For the future users in railway station toilets, the additional research on types of diverse space and other sanitary facilities within railway station should have been continued.

• 방송공학회논문지
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• 제12권6호
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• pp.630-640
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• 2007

본 논문은 지상파 DMB자동재난경보방송을 위한 서비스 모델, 전송 채널, 서비스 시그널링의 설계에 대해 기술한다. 우선 본 논문의 설계와 관련한 지상파 DMB 방송 기술 및 표준을 분석한다. 다음으로 일반적인 DMB 서비스와의 재난경보방송 서비스의 차이점에 대해 기술하고, 기존의 서비스 모델에 재난경보방송 서비스를 적용할 경우 발생하는 문제점을 파악한다. 본 논문에서는 공통 서비스라는 새로운 개념을 제안하여 재난경보방송 서비스 모델을 설계한다. 다음으로 재난정보를 전송하기 위한 전송 채널을 선택한다. 문자를 기반으로 하는 핵심적 내용의 메시지와 이를 보완하는 멀티미디어 추가정보로 재난정보를 구분하여 각각을 위한 전송채널을 선택한다. 메시지 전송을 위해 FIDC를 사용하는 EWS (FlG 5/2)를 선택하고, 추가정보는 MSC를 사용하는 모든 채널을 사용할 수 있도록 제안한다. 마지막으로, 이러한 공통 서비스와 전송 채널을 수신기에 알리기 위한 시그널링 방법을 설계한다. MCI를 사용할 경우의 발생하는 문제점을 파악하여 이를 해결할 수 있는 새로운 시그널링 방법을 제안한다. 본 논문의 내용은 추후 타 디지털 방송매체를 위한 재난경보방송 시스템 및 표준 설계에 활용할 수 있을 것이다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권2호
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• pp.626-643
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• 2023

As mobile forensics has emerged as an essential technique, the demand for technology development, education and training is increasing, wherein images are used. Academic societies in South Korea and national institutions in the US and the UK are leading the Mobile Forensic Image development. However, compared with disks, images developed in a mobile environment are few cases and have less active research, causing a waste of time, money, and manpower. Mobile Forensic Images are also difficult to trust owing to insufficient verification processes. Additionally, in South Korea, there are legal issues involving the Telecommunications Business Act and the Act on the Protection and Use of Location Information. Therefore, in this study, we requested a review of a standard model for the development of Mobile Forensic Image from experts and designed an 11-step development model. The steps of the model are as follows: a. setting of design directions, b. scenario design, c. selection of analysis techniques, d. review of legal issues, e. creation of virtual information, f. configuring system settings, g. performing imaging as per scenarios, h. Developing a checklist, i. internal verification, j. external verification, and k. confirmation of validity. Finally, we identified the differences between the mobile and disk environments and discussed the institutional efforts of South Korea. This study will also provide a guideline for the development of professional quality verification and proficiency tests as well as technology and talent-nurturing tools. We propose a method that can be used as a guide to secure pan-national trust in forensic examiners and tools. We expect this study to strengthen the mobile forensics capabilities of forensic examiners and researchers. This research will be used for the verification and evaluation of individuals and institutions, contributing to national security, eventually.