• Journal of KIISE
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• v.42 no.9
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• pp.1133-1146
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• 2015

This paper examines how a Computer Engineering Graduate student team ran their Advanced Software Engineering Capstone project using SCRUM. The environment provided contextual challenges in terms of the on-site customer and upfront requirements document, not uncommon in a document driven single-step methodology. The paper details the methodology and practices used to run the project, and reflects on some of the challenges faced by the members of a typical software team when transitioning to a SCRUM process. The paper concludes by evaluating the success of the techniques and practices compared to the Agile Manifesto and Henrik Kniberg's Scrum checklist. The project was undertaken at South Korea's Ajou University.

• Journal of Internet Computing and Services
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• v.2 no.3
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• pp.9-17
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• 2001

Ad-Hoc networks consist of a set of mobile hosts that communicate using wireless links, without the use of other communicate support facilities (such as base stations). The topology of an Ad-Hoc network changes due to the movement of mobile host. which may lead to sudden packet loss. Recently, a large amount of research has focused on the routing protocols needed in such an environment. but researches about Internet traffic performance analysis were unexhausted. Accordingly, we have simulated Ad-Hoc mobile network that using AODV routing protocol and Ad-Hoc mobile network topology size and node speed as simulation estimation-factor to analysis traffic performance. As the result of the simulation, we identify that TCP /Reno was more sensitive than TCP/Sack about node speed and a number of the node.

• Proceedings of the Korea Multimedia Society Conference
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• 2001.06a
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• pp.232-235
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• 2001

최근 노트북 컴퓨터나 PDA(Personal Digital Assistants)와 칼은 개인 휴대용 통신장비의 사용이 급속도로 증가하고 있다. 매우 동적인 상황에서 이러한 장비들간의 통신은 우선 Ad-Hoc망의 발전을 초래하였다. Mobile Ad Hoc Network(MANET)은 전통적인 유선 환경과는 달리 무선 송·수신 장치를 가진 무선 이동노드의 집합이며, 동적인 토폴로지, 한정된 대역폭의 가변적인 링크용량, 한정된 에너지라는 특성을 갖는다. 본 논문에서는 Ad-Hoc 라우팅 프로토콜 중 Temporally-Ordered Routing Algorithm(Tora)상에서 데이터 트래픽의 성능을 분석하였다. 인터넷 데이터 트래픽 소스로는 CBR(Constant Bit Rate)를 사용하였고, 모의실험 결과 망의 이동성은 라우팅 프로토콜의 트래픽 성능을 분석하는 데 있어서 중요한 요소가 된다는 것을 알 수 있었다.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.599-600
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• 2006

본 연구는 솔더의 리프로우 현상으로부터 제안되었다. 솔더는 원형 흡착 층 위에서 녹게 되면 단위 면적당 표면 에너지를 최소화 하려는 특성 때문에 구형이 되는데, 이는 자기정렬 기구의 핵심이기도 하다. 본 연구에서 제안되는 새로운 설계가 기존의 설계와 가장 큰 차이점은 그림 1에서 처럼 솔더의 리프로우에 의해 측면 접합을 한다는 것이다. 대부분의 기존 실장 기술은 접합 면과 피 접합 면이 서로 마주보고 있으며 서로 맞닿아야만 접합이 이루어 지는 "intimate contact" 원리인 반면, 본 연구에서 제안된 개념은 접합 면과 피 접합 면이 쏠더에 의해 끼워진 상태에서 측면 접합되는 원리이 기 때문에 접합 면끼리 서로 인접하지 않아도 접 합은 자연적으로 완성되어 접합면의 표면상태에 충분히 둔감하다는 장점을 가질 수 있다. 그림 1의 (b)는 개념도 (a)를 구현하기 위한 제작 공정을 보여준다. 버섯 모양의 구조물을 형성하는 공정과 측벽에 UBM을 선택적으로 형성하는 공정이 핵심 공정이며 이외의 접합 공정은 기존의 방법과 달리 매우 간단하게 완성시킬 수 있다. 본 논문에서는 기본적으로 제안된 방법으로 구현되는 실장결과와 그 기본적인 기계적 강도, 기밀 특성을 살펴 보았다. 그리고 RF 소자의 실장에 있어서 제안된 방법에 의한 전기적 연결의 기초 결과에 대해서 논의한다.

• The Journal of the Convergence on Culture Technology
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• v.9 no.5
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• pp.99-104
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• 2023

This study aims to 1) summarize the definitions the definitions of afrofuturism through a theoretical review 2) through exploratory empirical research, and 3) recover the concept of reversal in relation to the turning point of future technological development. To this end, first, the theoretical background and conceptual discussion of Afrofuturism were examined, and works in the field of SF literature, music, and art were analyzed. Octavia Butler's science fiction confirms the idea that black people must liberate themselves from othered oppression by bringing the past of slavery to the forefront of the world. Janelle Monae's music presents a liberated utopia where technology allows minorities to connect with the outside world. In addition, Jean-Michel Basquiat's artwork reimagines a black identity that has been excluded and seeks to expand communal discussions. In light of their work, this paper proposes that the values inherent in African humanism can provide clues to the co-evolution that is generated by relating to the Other in the face of exponentially advancing technology.

• Journal of Broadcast Engineering
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• v.24 no.5
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• pp.859-869
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• 2019

We are facing an era of automation where artificial intelligence works and an era of super-aging, where birth is rapidly declining. In this paper, we intend to perform the creation of an autobiography in conjunction with the generation integrated narrative storytelling, thereby exploring the potential for visual storytelling that can be extended to a variety of media format. The visual autobiography production program confirmed through an interview with the production participants that grandparents, grandchildren and granddaughter together became the main characters in the documentary, a valuable opportunity to reflect on their past memories and lives and recognize their meaning of life. The visual storytelling education program model and media life service presented in this paper will be shared by the youth and the elderly generation together and contribute to the 'sympathetic culture' as a social integration program.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.785-790
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• 2009

Widgets are the instrument for representing user's character and embossing the value of blogs. The compound word of the Windows and Gadget the application, widgets are the functional program to displayed on the screen graphical user interface (GUI) tools as a kind of service that user want to see. On the operating system, the Web, and mobile area, widgets offer the delivery of information, convenience and efficiency. However widgets have been never gave satisfaction to user because it focused transmitting information and representing circumstance than fun. This study is for recognized fun elements that user feel interest and categorized fun elements each type of widgets. Fun elements of widget never been defined, we use fun elements on design and product area and emotional word that is representative of affectivity. And we make up an online questionnaire to blog users. The widget selected by popular degree among the domestic widgets and the Japanese widget. And the results of the questionnaire that 5-scales used based on user preferences to identify the elements that are fun.

• Journal of Satellite, Information and Communications
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• v.12 no.4
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• pp.42-49
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• 2017

Delay- and Disruption-Tolerant Network (DTN) has been considered as a key technology to overcome main challenges in interplanetary communications such as an intermittent connectivity and high bit error rates. The lack of end-to-end connectivity between source and destination results in long and variable delays and data loss, hence the Internet Protocols cannot operate properly in such environments because it requires an end-to-end connectivity. The DTN, which utilizes 'store-and-forward' message passing scheme between nodes, can overcome the lack of end-to-end connectivity in Interplanetary Network (IPN). In this paper, DTN is applied to 3-hop relay IPN, where messages are transmitted from Earth ground station to Lunar lander through Earth satellite and Lunar orbiter. ONE simulator is used to reflect the real environment of IPN and an efficient resource management method are analyzed to guarantee the message delivery by optimizing a message TTL (Time to Live), buffer size and message fragmentation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.1
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• pp.402-408
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• 2021

Vehicle engineering analysis in the event of an accident caused by a car built on mechanical design has not been investigated in-depth but relies on the subjective experience knowledge of the investigator. This study analyzed the correlation between the speed, progress, steering, and braking before impact, which is consistent with the final stop position, by drawing a site situation chart using the CAD (CAD) program and repeating 250 crashes using the PC-Crash program. The following situations were investigated: lower impact velocity; greater impact speed of the vehicle, which is not affected significantly by the departure angle; higher vehicle speed, such as the effective impact velocity, after the impact; higher vehicle speed; and lower vehicle speed. (Ed note: I am unsure what you are saying here. It appears contradictory and not a complete sentence. Please check the changes.)The simulation results of this study identified the process of returning to the magnetic progression lane after recognizing the opposite porter while Mighty was carried out on the uphill left-curve section in a position that crossed the center line, and the collision of the porter's front left side, pushing the porter in the right diagonal direction and making the front stop towards approximately 11 o'clock.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.15 no.6
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• pp.67-79
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• 2020

This study analyzed the start-up education curriculum and start-up education programs of seven universities in the U.S. to find out what courses are provided, what various programs exist, and what the characteristics of start-up education in each university are. California State University, San Bernardino / University of California, Irvine / Drexel University / Oklahoma State University / Florida State University / San Diego State University / University of Southern California where entrepreneurship education based on the Entrepreneurship Degree Course is being established based on the Entrepreneurship Center of seven universities in the United States, which is not well introduced in Korea. This study examined how the start-up education courses and start-up support systems at seven universities in the U.S. are progressing at the undergraduate, MBA, master's and doctoral levels, and comparative levels. Through the case studies of the universities presented, the primary analysis was carried out to explore the various characteristics of American university start-up education. The implications of start-up education at American universities in this study are as follows. First, in order for universities to take the initiative in providing start-up education, they should be organized to suit the course of start-up education suitable for the characteristics of universities and introduce support programs. Second, it is necessary to establish an independent center within domestic universities to be operated autonomously. Third, the start-up education of universities should include building university-industry partnerships, operating entrepreneurship degree courses and collaboration between departments of universities. Fourth, the independent center should lead the active participation of alumni and local start-ups and start-up-related programs should be operated based on this. Fifth, Differentiated programs for each university's characteristics should be introduced and applied to universities. Although case studies have limitations that cannot be generalized, they can provide a useful framework. Therefore, it is necessary to design a systematic start-up education that reflects the correct design direction and characteristics of each university.