• Journal of KIISE:Software and Applications
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• v.37 no.1
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• pp.19-28
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• 2010

Recently, various home appliances are inter connected in wired/wireless network to provide a single service, but their interfaces are not uniformly integrated. In order to get a service in such an environment, users have to figure out how to control each appliance and the way of combining its functions with others. Even worse to the users, many buttons are barely used to control the complicated functions of the appliances on the remote controllers, and controllers have very similar shapes in each other. In this paper, based on the definitions of a task as a unit of services provided in the environment of multi-connected appliances, we propose a markup language for home appliances, called HAML (Home Appliance Markup Language), for generating task-based user interfaces to help controlling multi-connected appliances as one pleases. The proposed method generates interfaces by gathering the buttons frequently used and necessary for tasks, and provides automatic settings of multi-connected appliances. The proposed method is verified with an analysis of scenarios and usability tests.

• Journal of the Korea Computer Industry Society
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• v.5 no.1
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• pp.157-166
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• 2004

Consequently substantial research has been done on the development of the bio-metric recognition method as well as technical research in the field of authentication. As a method of bio-metric recognition, personal and unique information such as fingerprints, voice, face, Iris, hand-geometry and vein-pattern are used. The face image system in bio-metric recognition and information authentication reduces the denial response from the users because it is a non-contact system the face image system operates through a PC camera attached to a computer base this makes the system economically viable as well as user friendly. Conversely, the face image system is very sensitive to illumination, hair style and appearance and consequently creates recognition errors easily, therefore we must build a stable authentication system which is not too sensitive to changes in appearance and light. In this study, I proposed user authentication protocol to serve a confidentiality and integrity and to obtain a least Equal Error Rate to minimize the wrong authentication rate when it authenticates the user.

• The Journal of the Korea Contents Association
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• v.15 no.4
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• pp.469-478
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• 2015

With several problems being pointed out with the rapid growth of online advertising markets, false, exaggerated or sensational advertisements are increasing. Particularly, the sensational appeal of online advertising is placed in the blind spot of deliberation on advertisements with any social consensus on the deliberation on online advertisements not made yet. According to these reasons, regulation and maintenance of the deliberation system are required for online advertising. In this study, content analyses on visual and verbal sensationalism in 2,009 advertisements were carried out based on 32 national online news services. According to the analyses, obscene advertisements on online news services are more than serious. In this study, based on the analyses, need for deliberation and regulation on online advertising is raised and direction of the deliberation on desired advertising is explored. In the future, effective advertising deliberate models need to be constructed through gathering opinions of the various members of the online advertising industry, such as advertisers, advertising agencies, media representatives, and publishers, etc.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.20 no.7
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• pp.58-64
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• 2006

Recently deep interests have been paid on the effective generation of ozone, which has been widely used for water treatment, deodorization, color removal, and chemical processing of exhausted smoke. The silent discharge reaction has been proposed as the most effective one in the many ozone generation methods, because the silent discharge can be generated under the conditions of lower applied voltage and power consumption, compared other ones. In this paper, in order to improve the ozone generation and ozone generation efficiency, the conventional silent discharge chamber with $Al_2O_3$ dielectric layer and tubular ferroelectric bed discharge reactor packed with $Al_2O_3$ pellets were made, and the silent discharge of the reactors were studied experimentally. The ozone generation characteristics are also discussed based on the discharge characteristics, especially on the wall charge accumulation properties and power consumption. The results show that the electric charges of discharge tube with bead are around 2.5 times as large as those without bead. In the discharge chamber packed with dielectric beads, the ozone concentration and the energy yield characteristics were also improved, compared with those in the conventional silent discharge reactor.

• Journal of Advanced Navigation Technology
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• v.21 no.2
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• pp.155-162
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• 2017

In recent years, aviation-related safety-critical systems have been developed in Korea, but these products have not satisfied the specified requirements and thus have not been commercialized or commercialized. Due to increasing complexity of the modern aviation system, traditional verification and validation techniques are not sufficient to identify and reduce latent risks in the system. To overcome this shortcoming, a new method which is called 'Independent verification and validation (IV&V)' is suggested. However, academic researches on the effectiveness of this independent verification and validation have not been conducted domestically, and it is performed very rarely even overseas. Therefore, in this paper, we investigated the application of independent verification and validation of the safety-critical aviation systems performed by advanced aviation organizations, and analyzed various positive effects on projects. As a result of the analysis, IV&V shows that early error detection rate is increased, potential risk is mitigated early, and the complex reworking probability, which appears later in the development life cycle, is reduced, greatly preventing the development schedule and costs from increasing.

• The Journal of the Korea Contents Association
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• v.18 no.3
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• pp.279-285
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• 2018

Recently, having many studies have reported that positive psychology in the workplace have a positive relation with performance, organizations have been trying to develop and main the positive psychology and emotion. The companies have started to support the systematic health promotion program which was considered the individual domains. Also, the company has emphasized the importance of leaders' health promotion behavior. Therefore, we have conducted the empirical analysis for the relationship between leaders' health promotion behavior perceived team performance. Additionally we have analyzed the moderating effect of team climate between leaders' health promotion behavior and perceived team performance. For this analysis, we have collected the 253 data from business people of IT manufacturing firm and did hierarchical regression analysis. As a result, wellness leadership showed the positive relations on perceived team performance. Team climate for the health promotion moderated between wellness leadership and perceived team performance. Finally. we have proposed the academic and practical implications in terms of business.

• Journal of Satellite, Information and Communications
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• v.10 no.1
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• pp.49-55
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• 2015

In cognitive radio network (CRN), spectrum sensing is an elementary level of technology for non-interfering to licensed user. Required sample number for spectrum sensing is directly related to the throughput of secondary user and makes the tradeoff between the throughput of secondary user and interference to primary user. Required spectrum sensing sample is derived from required false alarm, detection probability and minimum required SNR of primary user (PU). If we make clustering and minimize the required transmission boundary of secondary user (SU), we can relax the required PU SNR for spectrum sensing because the required SNR for PU signal sensing is related to transmission range of SU. Therefore we can achieve efficient throughput of CRN by minimizing spectrum sensing sample. For this, we design the tradeoff between gain and loss could be obtained from clustering, according to the size of cluster members through game theory and simulation results confirm the effectiveness of the proposed method.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.9B
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• pp.1098-1107
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• 2011

As recent integration of wire and wireless networks and the convergence of telecommunications and broadcasting, uniform and standardized by the broadcasting operators of existing stations to provide 4A(Any-time, Any-where, Any-device, Any-contents) services for the next-generation of multimedia services research is being progressed. Demand for theses next-generation multimedia services to ensure video compression coding technology, as well as mobility, ability to operation a variety of devices, characteristics and performance of user network and the status and conditiion, user preferences and context-awareness based on the technology has an interest in technical studies. In this paper, the current internet environment, SVC(Scalable Video Coding) encoded by a mixture of multicast and overlay multicast transmission technology for broadcasting services by designing and efficient multimedia broadcasting system is proposed. In addition, ACK-Aow Optimization by overlay multicast scheme existing tree-based overlay multicast, and by comparing the effectiveness of the proposed algorithm is demonstrated.

• Korean Architects
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• no.2 s.358
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• pp.53-55
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• 1999

제10회 아카시아 토론회가 본 협회(KIRA) 주최로 오는 9월 13일부터 17일까지 인터컨티넨탈호텔 국제회의장에서 개최된다. "아시아에서의 기술, 전통 그리고 건축"을 주제로 열리는 이번 토론회에는 우리나라를 비롯해 중국, 일본 등 아시아지역 16개 회원국 대표단과 행사관계자, 그리고 일반참가자 등 약 1천여명이 참가해 아시아지역 건축사들간 유대를 강화하고 주제 토론을 통한 기술교류 및 건축정보를 교환하게 된다. 5박6일간의 일정으로 진행될 이번 행사는 토론회와 함께 공식행사로 아카시아 이사회와 교육위원회 회의가 열리며 아시아건축상 시상식과 각종 전시회, 건축탐방, 한국건축소개 등 다양한 부대행사가 열린다. 특히 "건축문화의 해"를 맞아 개최되는 이번 ARCASIA Forum 행사에는 지명도가 높은 외국 건축사들이 상당수 우리나라를 찾을 것으로 예상돼 많은 건축인들의 관심이 모아지고 있으며 아울러 한국에서의 대규모 국제행사 개최를 계기로 침체돼 있는 우리 건축계에 활력을 불어넣고 한국건축의 위상을 한단계 끌어 올리는 기회가 될 것으로 보인다. 그동안 우리 협회는 88년아카시아대회를 제외하고는 국제관련 행사가 주로 외국에서 열렸던 관계로 직접적으로 행사에 관계했던 인사나 일부 관심있는 국내 건축사 이외에는 아카시아의 성격과 역할 등에 대한 이해가 부족했고 그만큼 관련행사에 대한 관심도가 적었던 것 같다. 그러나 국제사회는 국가간의 개방과 정책에 따라 사회 전 분야에 걸쳐 새로운 시도가 이루어지고 있으며, 건축관련부문은 민간사업뿐 아니고 정부 조달시장까지도 개방되어 외국 업체가 참여하고 있는 실정이다. 건축설계 또한 시장개방의 압력을 직간접적으로 받고 있을 뿐 아니라 그것이 점차 현실로 다가오고 있다. 이같은 상황에서 우리 건축계는 지속적인 국제교류를 통해 세계 건축시장이 어떻게 변화되고 있는지를 확인하고 그에 대한 정보를 토대로 적절한 대처가 필요한 상황이다. 그동안 아카시아는 회원국의 현안에 대해 서로의 정보교환과 토론이 있었으며, 아시아 각국의 입장을 대변하여 서방세계와 의견교환을 통해 지속적인 대화를 해 왔다. 이와 관련하여 본지에서는 ARCASIA Forum의 서울개최를 계기로 ARCASIA에 대한 독자 여러분의 이해를 돕고자 아카시아의 연혁과 성격 그리고 관련행사 및 회의구성 등을 요약하여 소개하고 또한 지난 85년 이후 우리 협회가 한국대표로 참가해 활동한 내용 등을 정리해 이번호부터 게재코자 한다.

• Proceedings of the Materials Research Society of Korea Conference
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• 2011.05a
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• pp.38.1-38.1
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• 2011

최근 중동정세의 변화와 유류 소비의 증가에 따른 유가의 급등과, 일본 지진사태로 일어난 원자력 발전의 안정성에 대한 문제로 인하여 안전하고 깨끗하게 에너지를 생산할 수 있는, 저탄소 녹색성장을 구현할 수 있는 신재생 에너지에 관련된 연구에 많은 관심이 모아지고 있다. 특히 태양광 에너지를 전기로 변환하여 사용하는 것은 최근 가장 큰 관심사 중 하나이다. 나노결정 Si (nc-Si) 박막은 이러한 광전자 산업 및 태양 에너지 분야에서의 폭넓은 응용 가능성으로 많은 연구가 진행되고 있다. 이러한 nc-Si 박막의 발광 특성은 비정질 박막내 Si 나노결정에 기인한 양자제한효과(quantum confinement effect)에 의한 것으로 알려져 있다. 본 연구에서는 증착시 기판에 AC (alternating current) Bias를 인가하여 PE CVD 기법으로 nc-Si:H 박막을 증착하였다. H2와 SiH4를 각기 45, 20 sccm으로, 100 W의 RF 전압을 주어 플라즈마를 생성하였으며, 60~900 Hz의 주파수 범위에서 60 V의 Bias를 인가하여 박막을 증착하였다. 이들 박막의 결정 크기, 결정화도, 나노 구조 및 광학적, 화학적, 기계적 특성을 XRD, FT-IR, Raman spectroscopey, AFM, PL, Nano indenter 등을 사용하여 조사하였으며, 기판에 인가된 전압과 주파수에 따른 결정크기와 박막의 광학적 특성과 상관관계를 고찰하였다. Bias 전압에 따라 ~1에서 ~4 nm의 크기를 갖는 나노 크리스탈이 생성 되었으며, 최고 10%의 나노결정 분율을 가지는 박막을 증착하였다. 이는 광학적 특성에도 영향을 주어 PL (photoluminescence)의 피크는 470~710 nm의 영역에서 관찰되었다. 또한 AC-Bias의 영향으로 박막 내 응력 해소에도 영향을 주어 박막내 존재하는 응력이 결정에 미치는 영향도 알 수 있었다. 이번 발표에선 증착 조건에 따른 박막의 나노구조 및 광학적 특성의 변화와 이들 간의 상관관계를 발표하고자 한다.