• International Journal of Aeronautical and Space Sciences
• /
• 제13권1호
• /
• pp.117-125
• /
• 2012

This paper presented the design of SRPS, ground function test, and the deployment test on a high speed taxi of KC-100 airplane. KAI has developed a spin recovery system in collaboration with Airborne Systems for KC-100 general aviation airplane. Spin mode analysis, rotary balance and forced oscillation tests were performed to obtain the rotational, dynamic derivatives in the preliminary design phase. Prior to the detailed design process of SRPS, approximations for initial estimation of design parameters- fineness ratio, parachute porosity, parachute canopy filling time, and deployment method- were considered. They were done based on the analytical disciplines such as aerodynamics, structures, and stability & control. SRPS consists of parachute, tractor rocket assembly for deployment, attach release mechanism (ARM) and cockpit control system. Before the installation of SRPS in KC-100 airplane, all the control functions of this system were demonstrated by using SBTB(System Breakout Test Box) in the laboratory. SBTB was used to confirm if it can detect faults, and simulate the firing of pyrotechnic devices that control the deployment and jettison of SRPS. Once confirmed normal operation of SRPS, deployment and jettison of parachute on the high speed taxiing were performed.

• KNOM Review
• /
• 제23권1호
• /
• pp.34-42
• /
• 2020

NFV (Network Function Virtualization) 환경에서는 소프트웨어로 구현된 가상 네트워크 기능 (VNF: Virtualized Network Function)을 범용 서버에 설치하는 것으로 네트워크 기능을 제공한다. 네트워크 관리자는 VNF를 네트워크 토폴로지 상 적절한 위치의 서버에 배치하고 상황에 따라 동적으로 관리함으로써, 다양한 네트워크 상황에 대해 신속하고 유연하게 대응할 수 있다. 하지만 여러 네트워크 조건 (서비스 비용 및 품질) 등을 고려하는 것은 매우 복잡하고 어려운 문제이며, 특히 결정된 배치를 실제 NFV 환경에 적용하는 데는 처리 시간이 소요되기 때문에, 최적의 VNF 배치를 위해서는 필요한 자원량을 예측하여 VNF 배치를 결정하는 것이 필요하다. 본 논문에서는 MEC (Multi-access Edge Computing) 토폴로지에서 서비스 요청을 무작위로 생성하여 ILP (Integer Linear Programming) 모델을 통해 시뮬레이션한 결과를 학습데이터로 사용하는 기계학습 모델을 도출한다. 도출된 예측 모델은 5분 이후의 미래 시점에 대해 ILP 솔루션 결과 대비 90% 이상의 정확도를 보였다.

• 한국식생활문화학회지
• /
• 제33권2호
• /
• pp.199-205
• /
• 2018

This study has utilized the Quality Function Deployment (QFD) technique in order to plan the tangible (menu) and intangible (service) product of dumpling restaurant. The engineering characteristics of tangible products were classified into product planning, purchase management, production management, and information management based on the production system of foodservice. The engineering characteristics of intangible products were also classified into physical evidence, human interaction, and pre-communication based on the service operation and delivery system. As a result of analyzing the QFD, it was found that the customer hope the hygiene factor and response factor to be improved. It is analyzed that product planning, information management, and production management should be improved first in terms of engineering characteristics considering consumer needs. In the future, by utilizing the systematic product development process that the requirements of tangible and intangible product consumers are converted to the engineering characteristics, the development of competitive product within the market will be possible, and furthermore it is expected to be useful for reducing the unnecessary time and design costs due to failure of product development.

• International Journal of Quality Innovation
• /
• 제3권2호
• /
• pp.138-158
• /
• 2002

Nowadays, new product development (NPD) is one of the most crucial factors for business success. The manufacturing firms cannot afford the resources in the long development cycle and the costly redesigns. Good product planning is crucial to ensure the success of NPD, while the Quality Function deployment (QFD) is an effective tool to help the decision makers to determine appropriate product specifications in the product planning stage. Traditionally, in the QFD, the product specifications are determined by a rather subjective evaluation, which is based on the knowledge and experience of the decision makers. In this paper, the traditional QFD methodology is firstly reviewed. An improved Hybrid Quality Function Deployment (HQFD) [MSOfficel] then presented to tackle the shortcomings of traditional QFD methodologies in determining the engineering characteristics. A structured questionnaire to collect and analyze the customer requirements, a methodology to establish a QFD record base and effective case retrieval, and a model to more objectively determine the target values of engineering characteristics are also described.

• International Journal of Computer Science & Network Security
• /
• 제22권8호
• /
• pp.249-259
• /
• 2022

Project management and deployment has gone through a long journey from traditional and agile to continuous integration, continuous deployment and continuous monitoring. Software industry benefited with the latest buzzword in the development process, DevOps that not only escalates software productivity but at the same time enhances software quality. But the implementation and assessment of DevOps practices is expository as there are no guidelines to assess and improvise DevOps application in software industries. Hence, there was a need to develop a hybrid model to assist software practitioners in DevOps implementation. The intention behind this paper is to implement the already proposed DevOps hybrid model using suggested tool chains including Jenkins, Selenium, GitLab, Ansible and Nagios automation tools through Jenkins project management environment and plugins. To achieve this implementation objective, a java application is developed with a web-based graphical interface. Further, in this paper, different challenges and benefits of Jenkins implementation shall also be outlined. The paper also presents the effectiveness of DevOps based Model implementation in software organizations. The impact of considering other automation tools and models can also be considered as a part of further research.

• 정보처리학회논문지D
• /
• 제16D권5호
• /
• pp.715-728
• /
• 2009

JBI(Java Business Integration)기반의 ESB(Enterprise Service Bus)는 웹서비스표준으로 서비스의 유통경로를 구현한 SOA(Service Oriented Architecture)의 한 방법이다. 광범위한 벤더로 구성된 JBI기반의 ESB는 서비스를 플러그인 할 수 있는 확장성의 장점을 가지고 있지만 사용자가 서비스유닛을 사용하기 위해선 복잡한 절차의 패키징과정을 수동으로 연동해야 하고, 순차적인 절차를 따른 배포방법을 사용해야 하는 비효율적 유지관리의 문제점을 가지고 있다. 본 논문에서는 이러한 문제를 해결하기 위해 컴포넌트간의 연동을 위한 모델링에서 배포의 전 과정을 통합하여 관리할 수 있는 사용자 중심의 컴포넌트 배치도구를 설계 및 구현하였다. 배치도구의 설계를 위해 첫째, 기존 JBI를 지원하는 배치도구를 분석하여 문제점 및 개선사항을 도출하였다. 둘째, JBI 기반의 ESB에서 가지고 있는 문제점 등을 기반으로 요구사항을 도출해 내었다. 그리고 최종적으로 JBI를 지원하는 컴포넌트의 스키마를 분석을 통한 모델링의 속성 및 패키징, 배포, 검증 기능을 설계하고 구현하였다. 본 논문에서 제안하는 도구를 이용하면 사용자는 컴포넌트의 연동을 위한 모델링에서 배포의 전 과정을 별도의 도구와 수작업 없이 배치도구 내에서 통합적으로 수행하고 관리할 수 있으며 GUI기반의 컴포넌트 모델링과 관리를 통하여 사용자는 사용성과 편리성을 높일 수 있다. 또한 컴포넌트의 유효성검증 및 경로에 대한 유효성검증을 통하여 서비스유닛을 배포하는데 발생 할 수 있는 오류를 최소화 할 수 있을 것으로 기대된다.

• 산업경영시스템학회지
• /
• 제39권2호
• /
• pp.138-149
• /
• 2016

Quality function deployment (QFD) is a widely adopted customer-oriented product development methodology by translating customer requirements (CRs) into technical attributes (TAs), and subsequently into parts characteristics, process plans, and manufacturing operations. A main activity in QFD planning process is the determination of the target levels of TAs of a product so as to achieve a high level of customer satisfaction using the data or information included in the houses of quality (HoQ). Gathering the information or data for a HoQ may involve various inputs in the form of linguistic data which are inherently vague, or human perception, judgement and evaluation for the information and data. This research focuses on how to deal with this kind of impreciseness in QFD optimization. In this paper, it is assumed as more realistic situation that the values of TAs are taken as discrete, which means each TA has a few alternatives, as well as the customer satisfaction level acquired by each alternative of TAs and related cost are determined based on subjective or imprecise information and/or data. To handle these imprecise information and/or data, an approach using some basic definitions of fuzzy sets and the signed distance method for ranking fuzzy numbers is proposed. An example of a washing machine under two-segment market is provided for illustrating the proposed approach, and in this example, the difference between the optimal solution from the fuzzy model and that from the crisp model is compared as well as the advantage of using the fuzzy model is drawn.

• 한국정보통신학회논문지
• /
• 제17권7호
• /
• pp.1515-1521
• /
• 2013

AIS는 해양안전 분야의 핵심서비스이다. 그 중 바이너리 메시지를 전달하는 6번 메시지와 8번 메시지를 활용한 다양한 서비스들이 등장하고 있으며, 이에 MSC는 2010년 AIS-ASM 사용에 대한 권고를 발표한 바 있다. AIS-ASM을 통한 해양안전정보 제공은 해양사고 예방이나 안전 제고 등에 기여할 수 있지만, 새로운 서비스가 VDL에 추가 부하를 가져올 수 있으므로 서비스 도입 절차가 반드시 필요하다. 본 논문에서는 AIS-ASM 서비스 분석을 통해 각 서비스를 도입하기 위해 확장되어야 하는 기능 또는 체계들을 정리하고, 지속적으로 수집한 AIS 정보 분석을 통해 현행 AIS 운용 환경을 관찰한 결과를 소개한다. 또한 이를 바탕으로 신규 AIS-ASM 서비스 도입을 위해 수행하여야 하는 선결 연구주제들을 정리한다. VDL 활용 감시시스템, 비정상 AIS 기기 감지 및 제거, 해양안전서비스 가치분석 등이 요구된다.

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

• 산업경영시스템학회지
• /
• 제15권25호
• /
• pp.91-95
• /
• 1992

The aircraft schedule is the central of an airline's planning process, aimed at optimizing the deployment of airline's resources in order to maximize profits In this paper, the aircraft schedule is formulated as an integer programming model and the exact algorithm hared on enumeration method is proposed.