• 자동차안전학회지
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• 제13권3호
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• pp.60-68
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• 2021

Invisible passenger airbag door system of hard panel types must be designed with a weakened area such that the side airbag will deploy through the instrument panel as like intended manner, with no flying debris at any required operating temperature. At the same time, there must be no cracking or sharp edges in the head impact test. If the advanced airbag with the big difference between high and low deployment pressure ranges are applied to hard panel types of invisible passenger airbag (IPAB) door system, it becomes more difficult to optimize the tearseam strength for satisfying deployment and head impact performance simultaneously. It was introduced the 'Operating Window' idea from quality engineering to design the hard panel types of IPAB door system applied to the advanced airbag for optimal deployment and head impact performance. Zigzab airbag folding and 'n' type PAB mounting bracket were selected.

• 한국멀티미디어학회논문지
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• 제16권3호
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• pp.354-365
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• 2013

무선 센서 네트워크의 QoS (Quality of Service)에 큰 영향을 미치는 요소들 중 하나는 센서 노드의 배치이다. 본 연구는 감시정찰 센서 네트워크에서 센서 필드 설계시에 사용자의 의사결정을 효과적으로 지원하기 위하여 다양한 변수들을 고려한 배치 결과를 제공하고, 정량적인 분석을 실시하며, 또한 세밀한 센서 배치 시뮬레이션을 제공하는 시스템을 개발하는 것이다. 배치 형태를 영역 채우기, 경로 감시, 그리고 장벽 감시의 3가지 형태로 분류하여 격자 기반의 초기 배치 알고리즘을 제공하고, 배치 영역의 비정형성과 센서들의 감지 범위의 상이성을 고려하여 초기 배치를 수정하는 알고리즘을 제공한다. 배치된 노드들에 대해서 경로 커버리지와 장벽 커버리지를 분석하는 기능과 네트워크 시뮬레이션을 제공한다. 제안된 시뮬레이터는 감시 정찰용 센서네트워크 시스템의 개발 환경의 일부로 활용될 수 있다.

• Nuclear Engineering and Technology
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• 제40권6호
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• pp.517-526
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• 2008

The widespread concern regarding the management of spent fuel that mainly contributes to nuclear waste has led to the development of the sodium-cooled fast reactor (SFR) as one of the most promising future types of reactors at both national and international levels. Various reactor deployment scenarios with SFR introductions with different conversion ratios in the existing PWR-dominant nuclear fleet have been assessed to optimize the SFR deployment strategy to replace PWRs with the view toward a reduction in the level of spent fuel as well as efficient uranium utilization through its reuse in a closed fuel cycle. An efficient reactor deployment strategy with the SFR introduction starting in 2040 has been drawn based on an SFR deployment strategy in which burners are deployed prior to breakeven reactors to reduce the amount of PWR spent fuel substantially at the early deployment stage. The PWR spent fuel disposal is reduced in this way by 98% and the cumulative uranium demand for PWRs to 2100 is projected to be 445 ktU, implying a uranium savings of 115 ktU. The SFR mix ratio in the nuclear fleet near the year 2100 is estimated to be approximately 35-40%. PWRs will remain as a main power reactor type until 2100 and SFRs will support waste minimization and fuel utilization.

• International Journal of Computer Science & Network Security
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• 제23권2호
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• pp.210-226
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• 2023

It is difficult to transform a blockchain initiative from the feasibility stage to the fully commercialized the technology's products or services, especially considering the significant investment required and the lack of studies on the benefits and barriers from deployment perspective. Whereas some organizations have come up with their own solutions to moving beyond the feasibility stage, commercial applications do not yet exist and few organizations are willing to invest beyond the prototype phase and fill in the gap between the expected and actual business value of these types of projects. This study aims to develop a blockchain model using a survey to gather qualitative data on experts' opinions on the deployment of blockchain technology. Our model will measure how business professionals could take advantage of blockchain's disruptive technology to develop business opportunities. This study's contribution is to show blockchain technology's potential strategic business value. The findings from this exploration include the prospective for delivering comprehensions to businesses for different creating investment choices on the embracing of the blockchain technology.

• 소음진동
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• 제11권1호
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• pp.111-117
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• 2001

Present work deals with a study on the deployment or retraction of cantilever beam that includes the rigid-body motion of large displacement of beam through the translational and rotational motions in 2-dimensional plane. The equations of motion are derived with respect to non-Cartesian coordinate system. In the formulation of equations of motion, shear deformations and geometrically non-linear effect are included. An assumed mode method is applied and numerical convergence characteristics are studied also. Types of motion of the moving beam are assumed to be classified as‘slow’or‘fast’motion, and the dynamic characteristics are investigated.

• 한국통신학회논문지
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• 제19권11호
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• pp.2179-2188
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• 1994

본 논문에서는 ITU-T에서 권고하는 5가지의 망구조 전개 방식 중에서 크게 SCP 와 IP 간의 No.7망을 통해 직접적으로 연결된 방법과 SSP(Service Switching Point)를 통해 간접적으로 SCP(Service Control Point)와 IP(Intelligent Peripheral)를 연결시키는 방법에 대해 연구하였다. 본 논문의 내용은 기존 TDX-10 구조에서 고도 지능망 서비스를 수행하기 위해 요구되는 소프트웨어 기능블럭들을 제안하고 또한 국내에서 연구중인 SSP를 통해 간접적으로 SCP와 IP를 연결시킬 경우 기존의 TDX-10구조에서의 하드웨어적 기능확장을 제안한다. 또한 제안된 구조에서의 SCP와 IP간의 두가지 연결방식에 대해 수학적 분석 및 시뮬레이션을 통해 SSP관점에서 성능비교를 하였다. 본 연구를 통해 망구조 진화 방향으로 볼 때 SCP 와 IP를 통해 NO.7망을 통해 직접적으로 연결시키는 방식이 더 효율적임을 알 수 있었다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제24권3호
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• pp.39-47
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• 2018

Purpose: The purpose of this study is to examine the deployment types and characteristics of mobile hospitals with it's historical backgrounds. Methods: Since the disaster can not be classified by country, the scope of the study is to include both domestic and foreign mobile hospitals. In order to minimize the casualties from the field hospitals used at the time of the First World War, which is the mother of mobile hospitals, we analyzed the mobile hospitals which are more compact and changed to the target areas and analyzed the mobile hospitals. Results: Historically, mobile hospitals have been transformed in a way that they are close to the target area and rapidly inject essential elements, and the deployment of wards has evolved to be able to combine in any form with center corridor. In the case of hospitals that can deal with infectious diseases, each treatment room was installed separately to thoroughly separate the copper wire. Implications: As disaster damage increases and incidence increases, field response should be quick. However, research on mobile hospitals, which are indispensable for field response in Korea, has not been conducted in various ways. From the origins of mobile hospitals, the development process is reviewed, and research is carried out to clarify the grounds and backgrounds for the planning of mobile hospitals that are quick and appropriate to the situation in Korea and abroad.

• 신재생에너지
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• 제6권2호
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• pp.33-39
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• 2010

The objective of this study is to present a basis for the evaluation on the renewable energy dissemination program in Korea applying the outcome evaluation, one of the five types of evaluation methods of EERE, DOE, and the effectiveness indicator, which is suggested by IEA, OECD. The outcome evaluation quantifies achievements of program outputs and outcomes against planned time frame. We analyze the correlation coefficients between cumulative expenditure on the renewable energy dissemination program and each renewable energy deployment and the unit installation cost of several dissemination programs for the outcome evaluation. Meanwhile, the effectiveness indicator is calculated by dividing the additional renewable energy deployment achieved in a given year by the remaining mid-term realizable potential to 2020 in each source of renewable energy. The results show that correlation coefficients between cumulative expenditure and each renewable energy deployment are significantly positive during the implementation period of each deployment program. And photovoltaic energy, bio energy, and wind power energy show high effectiveness indicator.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제25권1호
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• pp.29-40
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• 2019

Purpose: The purpose of this study is to analyze the deployment characteristics of korean and foreign mobile hospitals and to draw out the advantages and disadvantages based on the movement of patients. Methods: The arrangement and user movement lines of foreign mobile hospitals which were actually utilized, and the arrangements and user movement lines of korean mobile hospitals are compared and analyzed. Based on the results of the comparative analysis, we suggest the optimal placement of mobile hospital in Korea. Results: The recently developed Korean mobile hospitals have made many improvements. However, there is no practical use case for the mobile hospital in Korea, so it is necessary to establish the basis for the mobile hospital development site and the site access considerations. In addition, there is no detailed analysis of the movement of the administrators other than the medical staff, and it is considered that research on safe waste disposal is further needed. Implications: It is highly likely to be used as a basic data to find out the combination method of mobile hospitals that can efficiently deal with disasters through the arrangement and movement analysis of mobile hospitals in Korea and abroad.

• Wind and Structures
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• 제29권1호
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• pp.15-32
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• 2019

Much advancement has been made in wind power due to modern technological developments. The wind energy technology is the world's fastest-growing energy option. More power can be generated from wind energy by the use of new design and techniques of wind energy machines. The geographical areas with suitable wind speed are more favorable and preferred for wind power deployment over other sources of energy generation. Today's wind turbines are mainly the horizontal axis wind turbines (HAWTs) and vertical axis wind turbines (VAWTs). HAWTs are commercially available in various sizes starting from a few kilowatts to multi-megawatts and are suitable for almost all applications, including both onshore and offshore deployment. On the other hand, VAWTs finds their places in small and residential wind applications. The objective of the present work is to review the technological development, available sizes, efficiencies, structural types, and structural stability of VAWTs. Structural stability and efficiencies of the VAWTS are found to be dependent on the structural shape and size.