• Proceedings of the Korea Information Processing Society Conference
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• 2011.11a
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• pp.33-35
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• 2011

최근 안드로이드 플랫폼은 성능 개선의 많은 이슈를 가지고 있다. 그 중 안드로이드 부팅 시퀀스부분이 중요한 부분으로 차지하고 있다. 안드로이드 플랫폼 부팅 과정의 속도 저하가 발생 되는 부분은 블록 I/O 시스템이다. 본 논문에서는 리눅스 블록 레이어의 I/O를 tracing 해주는 blktrace에 대해 소개를 하고 그 기법을 통해 안드로이드 부팅 시퀀스의 I/O 패턴을 분석하고, 개선 방안을 고찰한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.01a
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• pp.1-4
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• 2023

운영체제(Operating System)는 사용자의 하드웨어, 시스템 자원(System Resources)을 제어하고 프로그램에 대한 일반적 서비스를 지원하는 시스템 소프트웨어(System Software)이다. 시스템 하드웨어를 관리할 뿐아니라 응용 소프트웨어를 실행하기 위하여 하드웨어 추상화 플랫폼과 공통 시스템 서비스를 제공한다. 최근에는 가상화 기술의 발전에 힘입어 실제 하드웨어가 아닌 가상 머신(HyperVisor) 위에서 실행되기도 한다. 본 연구에서는 다중 코어 프로세서를 타겟으로 한 소규모 운영체제 개발 프로젝트의 일환으로 부트로더를 설계하고 구현하였다. 부팅은 최초 컴퓨터에 전원이 들어온 후 운영체제가 실행할 수 있는 환경을 구축하는데 가장 중요한 역할을 하는 프로그램이며, 이를 잘 활용하면, 임베디드 시스템, IOT 등 다양한 분야에 이용할 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.303-304
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• 2024

본 논문에서는 해당 웹 사이트에 얼굴 인식을 통한 자동로그인 시스템 서비스를 구현한다. 얼굴 인식 라이브러리로 face_recognition을 사용한다. 웹 사이트에 접근 시 원하는 채용공고에 지원할 수 있으며. 원하는 기업을 검색하고 저장하여 모아 볼 수 있는 서비스를 제공하는 웹 애플리케이션을 설계하고 구현한다. React를 사용하여 프론트엔드를 구성하고 SpringBoot와 Flask를 사용하여 벡엔드를 구현하였다. 자동로그인을 위한 얼굴 인식 라이브러리로 face_recognition을 사용한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2024.05a
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• pp.95-98
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• 2024

현대 소프트웨어는 다양한 서비스 구조가 사용되고 있다. 이러한 환경에서는 각 서비스의 요구사항을 충족시킬 수 있는 기술들이 필요하며, Wasm(WebAssembly)은 많은 서비스에서 요구하는 조건을 만족시킬 수 있는 장점을 가지고 있다. 이에 본 논문에서는 WasmEdge와 다양한 런타임 환경의 성능을 비교하기 위해 로직 실행 시간, HTTP 부하 테스트, 컨테이너 이미지 크기의 세 가지 지표를 분석한다. 결과는 로직 실행 시간에서 Wasm이 1.81초로 가장 빨랐고, 컨테이너 이미지 크기 역시 9.54MB로 가장 작았다. 마지막으로 HTTP 부하 테스트에서는 가장 빠른 트래픽 처리를 보여준 Spring Boot의 평균 초당 15076개보다 WasmEdge가 9239개로 트래픽 처리가 느렸지만, 로직 실행 속도와 컨테이너 이미지 크기가 작기 때문에 충분히 서버리스 컴퓨팅, 마이크로 서버, 엣지 컴퓨팅 분야에서 요구하는 조건을 만족시킬 수 있다.

• Journal of the Korea Fashion and Costume Design Association
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• v.19 no.4
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• pp.93-104
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• 2017

This study is a basic study to develop shoe last design technology to enhance and revitalize the competitiveness of the handmade shoes. In-depth interviews were conducted with four manufacturers in Seongsu-dong to identify the production status and design technology of shoe lasts. The result of the research is as follows. Firstly, shoe lasts for adults are produced at intervals of 5mm between 245mm-285mm for men's shoes, and between 220-260mm for women's shoes. The production rate of women's shoes was high in the order of general type, boot type, and sandal type while men's shoes mainly produce general type. Secondly, the master last size and ball girth rating for men's and women's shoes were analyzed to EE-EEE grade at 260mm and D grade at 235mm. The length of the master last for men's shoes is 276-290mm, the heel width is 60-65mm, the ball width is 88-90mm, the ball girth is 250mm, and the waist girth is 248mm. The length of the master shoe last for women's shoes is 236-245 mm, the heel width is 50-55mm, the ball width is 78-80mm, the ball girth is 211~213mm, and the waist girth is 213~215mm. Thirdly, the last grading deviation is 5mm in length, the heel width is 0.5mm, the ball girth is 3.5mm, and the ball with is 1.2mm. The ball girth dimensions of Oxford type, slip-on type, and sneakers type are made at 250mm, 248mm, and 245mm for men's shoes. For women's shoes, the ball girth dimensions of pump type, loafer & boot type, and sandal type are made at 211~213mm, 214~215mm, and 211mm. Fourthly, t+he construction of the automation system is insufficient and almost completely depends on manual production.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.12 no.6
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• pp.1-12
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• 2017

This paper is brought to asses the training effect of KS-QFD boot camp for the companies in the early growth stage. In particular, the focus of research falls on measuring transfer intension of the participants from the early stage companies older than three years old, motivating effect of applying knowledges acquired from KS-QFD training camp into their real business case. KS-QFD program is presented to help company in the early stage companies over three years old of boosting up their sales volume more than 5 times than now for the next 18 months by this training. The training program of KS-QFD is ultimately to design more practical and helpful program to real business and spread out. The research establish model by setting the learner readiness and perceived content validity by doing training design as independent variables, self-efficacy of learner as mediating variable, and transfer intension as dependant variable. Research results shows the following outcomes. First, learner readiness does not have directly effect on transfer intension under keeping statistical significance. But as the parameter of self-efficacy, it has perfect mediating effect. Second, research proves that perceived content validity have directly impact on learning transfer intension of mediating by self-efficacy partially. This research contributes on proving that learning by doing KS-QFD boot camp enable the participants to build up their self-efficacy and lead to enhance transfer intension. In more steps, the research validates that KS-QFD training camp have delivered very practical and helpful on-site knowledge to the participants.

• Journal of The Korean Society of Grassland and Forage Science
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• v.6 no.1
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• pp.19-23
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• 1986

This experiment was conducted to find out the change of composition and yield of whole crop rye plant by the maturity stage such as boot, heading, milky, dough and yellow ripe. The results of this experiment were as follows: The yield of whole plant was significantly (P<0.01) higher in the dough stage than in the other stages, and stalk yield of whole plant was significantly (P<0.01) higher in the dough stage than in the other stages, and stalk yield of whole plant was the highest in the part of whole plant, ear yield in the yellow ripe stage. Leaf and stalk yield in the ratio of part yield to whole plant yield remarkably decreased according to the passage from boot to yellow ripe stage, but ear yield increased. Dry matter yield increased with advancing maturity stage, and was the highest in the yellow ripe stage (P<0.01). Crude protein contents of whole plant and each parts gradually decreased, and crude fiber content increased with advancing maturity stage.

• Journal of Korean Orthopaedic Sports Medicine
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• v.3 no.1
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• pp.25-30
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• 2004

Objective: Recently, inline skates are populary increasing and have become major recreational activities. This study was performed to determine the effective prevention means on various extremity injury by investigating injury severity occording to acute injury and overuse injury. Results: Acute inline skating injury was experienced mostly among the age between 6$\~$14 years old children after school around nearby their home without using no appropriate safety device gear. The wrist injury was mostly happened. We think that overuse injury is related to boot itself, boot fitting and improper skating techniques. Conclusion: So afterall, appropriate safety equipment wearing in inline skating at the safe place after learning about the skating skills can reduce the acute inline skating extremity injuries. Choosing a pair of good fitting boots, performing the exact pushing techniques and take good rests in the middle of skating frequently can reduce the overuse injury.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.37 no.10
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• pp.33-41
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• 2000

Pyroelectric characteristics such as voltage responsivity, noise equivalent power and detectivity are modeled 3-dimensionaly considering th interaction of each parameters. Also, the circuit is designed to set up the frequency band width and the signal amplification of the pyroelectric IR sensor. The case of low frequency region shows that the voltage response increases with the independence of the sensor area as the thickness decreases. In the high frequency region, it is found that the voltage response with the load resistor of 20$G{\Omega}$ increases with the independence of the sensor thickness as the sensor area decreases. In the low frequency region, the detectivity becomes excellent at th load resistor of 20$G{\Omega}$, the sensor area larger than $4{\times}10^{-10}m^2$ and the sensor thickness thinner than $1{\times}10^{-5}m$, while, in the high frequency region, it shows high value at the sensor thickness thinner than $1{\times}10^{-5}m$ and the sensor area smaller than $2{\times}10^{-10}m^2$ with the independence of the load resistor. In the circuit design, quasi-boot-strap circuit is employed, in which a single op-amp is connected to the drain of JFFT. Desirable frequency band width, amplification rate and the remarkable drop of noise of about 56% from that of conventional circuits with double op-amps are obtained.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.169-184
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• 2022

The purpose of this study is to give a help organizations facing various crises establish effective crisis preparedness plans by confirming the effect of an organization's crisis management system on crisis preparedness, and by confirming the multiple mediating effects of crisis monitoring and learning from failure. The survey for the empirical study was conducted targeting 121 executives, directors, mangers and mid-level employees of the MBA program of the P National University. Confirmatory factor analysis, reliability analysis, and regression analysis were performed using SPSS 25 and Amos 25, and mediating effect analysis was performed using the boot-strapping technique using process macro. As a result of the study, it was found that the crisis management system had a positive (+) effect on crisis preparedness, and learning from failure and crisis monitoring multi-mediate between the crisis management system and crisis preparedness. Through the research results, it was confirmed that there was a significant effect of learning from failure and crisis monitoring that had an effect on crisis preparedness. As an implication, a crisis preparedness plan suitable for the organizational situation was presented, and the limitations of the study and future research directions were presented.