Earticle

본 연구는 1980년대 일본 교토의 대학생 연극 극단을 모체로 창단되어 매체와 표 현 양식에 구애받지 않고 다양한 작품 활동을 전개해 온 멀티미디어 퍼포먼스 그룹 덤 타입(Dumb Type, 1984-)을 조명한다. 덤타입이 1980년대 중반부터 1990년대 초 중반에 걸쳐 ’멀티미디어 퍼포먼스‘라는 장르를 확립할 수 있었던 배경을 연극과 멀티 미디어 퍼포먼스의 경계에 위치시키고 1960년대부터 이어져 온 일본 현대 연극 사조 인 앙그라 소극장 운동과 다매체가 융합된 멀티미디어 퍼포먼스의 역사를 되짚어 보 고자 한다. 나아가 덤타입의 멀티미디어 퍼포먼스 작품을 시기별로 분석하여 개괄한다. 덤타입 은 1984년 교토시립예술대학의 극단 좌 카르마를 모체로 탈연극적인 실험을 통하여 정체성을 확립하고자 하였고, 아마추어 대학 극단의 정체성에서 벗어나 기술문명과 소비사회에 대한 비판적 시선을 작품을 통해 제안하고자 하였다. 중심 멤버인 후루하 시 테이지의 에이즈 커밍아웃 이후 성 소수자와 이들이 겪는 사회적 배제, 차별을 작 품을 통해 나이브하게 그려내고자 하였으며 후루하시 사후에는 한층 세분화된 미디어 테크놀로지 전략을 내세우며 새로운 디지털 미학을 선보이고자 하였다. 본 연구는 그들의 작품 20여 년에 걸친 그들의 작품 활동을 전반적으로 개괄함으로 써 이들의 멀티미디어 퍼포먼스 작품을 심도 있게 이해할 수 있는 기틀을 마련하는 것 을 목표로 한다.

This study sheds light on the multimedia performance group Dumb Type (1984-), which was founded in the 1980s as a university theater troupe in Kyoto, Japan, and has carried out diverse works regardless of media and expressive forms. This study aims to establish the background that allowed Dumb Type to establish the genre of ‘multimedia performance’ from the mid-1980s to the early-to-mid 1990s, by locating it on the boundary between theater and multimedia performance, and to look back on the history of multimedia performance that fused the Angura theater movement, a modern Japanese theater movement that has continued since the 1960s, and multimedia performance, thereby establishing an art historical foundation. Furthermore, this study aims to analyze and outline the multimedia performance works of Dumb Type by period. Dumb Type, which began as the theater troupe in the Kyoto City University of Arts in 1984, attempted to establish its identity through post-theatrical experiments, and attempted to propose a critical perspective on technological civilization and consumer society through its works, breaking away from the identity of an amateur university theater troupe. After the AIDS coming out of its central member, Teiji Furuhashi, the group attempted to naively portray sexual minorities and the social exclusion and discrimination they experienced through its works, and after Furuhashi’s death, the group attempted to present a more detailed media technology strategy and a new digital aesthetic. This study aims to provide a foundation for an in-depth understanding of their multimedia performance works by providing a comprehensive overview of their creative activities spanning over the past 20 years.47)

Purpose: This study aimed to evaluate differences in nursing performance of nursing college students following simulator training or video-based training for patients with respiratory distress. Methods: The study used a two-group post-intervention design. The simulator group was trained using a high-fidelity simulator and the video group with a best practices video. Nursing ability was evaluated by video recording participants during a dyspnea simulation exercise. The collected data was analyzed with a t-test using SPSS 21. Results: The simulator group showed lower scores than the video group in the preparation (t = -4.60, p < .001) and nursing intervention (t = -2.41, p = .033) categories. Conclusion: Video training is effective for simulation education in cases of dyspnea.

본 논문에서는 무인항공기인 방송용 멀티콥터를 이용한 Full-HD급 이상 화질의 이미지를 효율적으로 전송하기 위해 이미지 압축센싱 기법을 적용하고, Sparse 신호의 효율적 복원을 위해 Turbo 알고리즘과 Markov chain Monte Carlo (MCMC) 알고리즘의 복원성능을 모의실험을 통해 비교 분석하였다. 제안된 복원 기법은 압축 센싱에 기반하여 데이터 용량을 줄이고 빠르고 오류 없는 원신호 복원에 중점을 두었다. 다수의 이미지 파일로 모의실험을 진행한 결과 Loopy belief propagation(BP) 기반의 Turbo 복원 알고리즘이 Gibbs sampling기반 알고리즘을 수행하는 MCMC 알고리즘 보다 평균 복원 연산 시간, NMSE 값에서 우수하여 보다 효율적인 복원 방법으로 생각된다.

This paper considers two reconstruction schemes of structured-sparse signals, turbo inference and Markov chain Monte Carlo(MCMC) inference, in compressed sensing(CS) technique that is recently getting an important issue for an efficient videowireless transmission system using multi-copter as an unmanned aerial vehicle. Proposed reconstruction algorithms are settingimportance on reduction of image data sizes, fast reconstruction speed and errorless reconstruction. As a result ofexperimentation with twenty kinds of images, we can find turbo reconstruction algorithm based on loopy beliefpropagation(BP) has more excellent performances than MCMC algorithm based on Gibbs sampling as aspects of averagereconstruction computation time, normalized mean squared error(NMSE) values.

본 연구는 블로그 리뷰의 멀티미디어 요소와 경제적 보상 제공 여부가 오프라인 업체의 마케팅 성과에 미치는 영향을 분석하였다. 블로그 리뷰는 플랫폼 기반의 제한된 리뷰 형식과 달리 멀티미디어 요소를 자유롭게 결합할 수 있는 구조적 특성을 지니며, 업체들은 경제적 보상을 통해 전략적으로 리뷰를 확보하고 있다. 그러나 인센티브 리뷰의 효과에 대한 기존 연구는 상반된 결과를 제시하고 있으며, 이러한 효과가 업체의 상업 지역과 브랜드 인지도(프랜차이즈 소속 여부)에 따라 어떻게 달라지는지에 대한 실증 연구는 여전히 제한적이다. 이에 본 연구는 (1) 멀티미디어 요소가 마케팅 성과에 미치는 영향, (2) 인센티브 리뷰와 비인센티브 리뷰의 차별적 효과, (3) 상업 지역과 브랜드 인지도에 따른 리뷰 효과의 이질성을 체계적으로 규명하고자 한다. 이를 위해 서울특별시 내 음식점을 대상으로 패널 데이터를 구축하고 고정효과 회귀모형을 활용하여 분석하였다. 분석 결과, 인센티브 리뷰와 비인센티브 리뷰 모두 마케팅 성과에 긍정적 영향을 미쳤으며, 경제적 보상 제공 사실이 명시된 경우에도 효과가 유지되었다. 그러나 리뷰 효과는 상업 지역 및 브랜드 인지도에 따라 차별적으로 나타났다. 인센티브 리뷰는 비상업 지역에서 더 강한 효과를 보인 반면, 비인센티브 리뷰는 상업 지역에서 상대적으로 더 큰 영향을 미쳤다. 브랜드 인지도 측면에서는 비프랜차이즈 업체에서 블로그 리뷰가 일관되게 긍정적인 효과를 보였다. 본 연구는 블로그 리뷰가 효과적인 디지털 마케팅 수단으로 기능할 수 있음을 실증적으로 제시하고, 업체 특성에 기반한 차별화된 리뷰 전략의 필요성을 시사한다.

This study examines how multimedia elements and the provision of economic incentives in blog reviews affect the marketing performance of offline businesses. Unlike platform-based reviews with restrictive formats, blog reviews possess structural flexibility that allows reviewers to combine multimedia elements, and firms strategically acquire reviews by offering economic incentives. However, prior research on the effectiveness of incentivized reviews reports mixed findings, and empirical evidence remains limited regarding how these effects vary across commercial districts and brand awareness (franchise affiliation). Accordingly, this study investigates (1) the impact of multimedia elements, (2) the differential effects of incentivized versus non-incentivized reviews, and (3) heterogeneity across commercial districts and brand awareness. Using panel data on restaurants in Seoul, we employ fixed-effects regression models. The results indicate that both incentivized and non-incentivized reviews positively affect marketing performance, even when economic compensation is disclosed. However, review effects vary across contexts. Incentivized reviews exhibit stronger effects in non-commercial districts, whereas non-incentivized reviews have relatively greater impacts in commercial districts. With respect to brand awareness, blog reviews consistently generate positive effects for non-franchise businesses. Overall, this study provides empirical evidence that blog reviews function as an effective digital marketing tool and highlights the need for differentiated strategies.

With computer-assisted instruction is widely used in university education, Multi-media teaching has produced a new form of education. Multimedia teaching has the effect of interactive and dynamic multi-dimensional, which enhances the students' learning interest and the understanding. In this paper, we make an empirical analysis about the impact of Wushu education on college students .The result shows that after using multimedia teaching, Wushu teaching can improve the physical function of college students, it will significantly improve the college students' sports view, sports value and sports motivation. At the same time, multimedia teaching can effectively improve the teaching quality. On this basis, we put forward relevant suggestions.

The field of WLAN has grown significantly in the last three decades. An interesting usage of computer networks is in offices and educational institutes were increased to exchange streams of multimedia data. These privately-owned networks are known as Local Area Networks (LANs) which come under the category of small scale networks but researchers introduced the possible usage of wireless technologies for interconnection. This has resulted in the emergence of wireless LANs (WLANs). In the world of information system, performance is a very important subject. It consists of the work which the computer WLAN system is supposed to do, and how do we judge whether is being done well. To achieve performance in the field of WLAN, certain features must be available and operational in the design of the WLANs. Performance must also be considered when configuring and implementing the WLAN systems. The modeler of such WLAN systems must follow a systematic approach in evaluation, measurements, and analytical or simulation modeling of such WLAN system. This paper presents a comparison and an evaluation of transmitting multimedia streams over three different WLANs scenarios by using OPNET simulator

Personalized Multimedia (PMM) services are the emerging area in multimedia technology. A PMMservice is a multimedia service provided according to the users personal profile which typically includes individual preferences, keeping the technical constraints of mobile device in use and the operating environment. We have proposed in [2], a transaction-based authentication scheme for PMM applications using cognitive agents. The proposed approach dynamically deploys authentication challenges based on mobile transaction sensitivity and users transaction time behaviors. This paper provides performance analysis of the authentication scheme in terms of authentication delay and cost. The performance analysis shows that, there is a considerable reduction in security cost compared to regular session based authentication schemes. By combining transaction based authentication with behavior analysis authentication attacks can be effectively identified.

The increasing number of people with hearing-impaired in Malaysia attracts to produce a variety of technologies, which can assist the deaf people in carrying out their tasks in everyday life as normal people. New technology can help to decrease the difficulty that hearing-impaired people faces in daily life to use the information services like normal people. Thus, this paper focuses on: i) developing a new multimedia courseware for pre-school students with hearing problem, and ii) comparing the deaf student’s learning performance before and after using the courseware. Four modules were developed for e-MSL courseware consist of alphabets, numbers, words and quizzes with colorful text, animation, sounds, video and pictures using Malaysian Sign Language (MSL). Sekolah Rendah Pendidikan Khas (SRPK) Indera Mahkota II, Kuantan has been chosen as the case study for data collection and for investigating the student learning performance on the courseware. The survey results show that 100% of the respondents have agreed that using e-MSL courseware managed to reduce the student learning time more than 80%. The result has indicated that students have shown better learning performance using e-MSL compared to traditional learning.

With the development of computer multimedia technology, the new educational model, which is represented by the educational technology, has emerged in the field of education in our country. Sports’ teaching is a participatory teaching and learning activities, also, the current network resources is relatively abundant, so that design and development of a multimedia network teaching platform is very necessary. In this paper, we test the performance evaluation of directional cross-country teaching by using multimedia. Result shows that college students will have significant advantage after using teaching media, both in weight, vital capacity, sit ups, and 800 meters. After the experiment, experimental classes get higher score than comparative classes in 100 meters directional cross country ability test. The application of computer multimedia is helpful in physical education; it can improve students' learning enthusiasm and the effect is remarkable.

Multimedia provisioning over Wi-Fi networks is a complex task that should consider also novel issues stemming from the specific behavior of IEEE 802.11 protocols. In particular, we claim the need for visibility of context data about the IEEE 802.11 performance anomaly, i.e., the situation where even a single node located at the borders of the coverage area of a Wi-Fi access point produces a relevant degradation in the connectivity quality of all other nodes in the area. The paper proposes a novel application-level middleware that counteracts IEEE 802.11 anomaly without imposing any modification in standard Wi-Fi protocols, thus permitting to maintain the current wide base of installed equipment. Our middleware portably detects anomaly situations via decentralized standard mechanisms available at clients; anomaly awareness is used to promptly react with application-level management operations (flow quality downscaling and traffic shaping) that both preserve the goodput at nodes in well-covered areas and minimize quality degradations at clients generating the anomaly. The reported experimental results point out the feasibility of application-level middleware approaches also in the challenging multimedia area.

본 논문에서는 기존 지상파 이동멀티미디어 방송시스템인 Terrestrial-DMB(T-DMB) 시스템의 성능개선을 위하여 이동환경에서 고전송 효율, 고품질 서비스를 제공할 수 있는 새로운 휴대 이동 멀티미디어 방송 시스템인 Advanced T-DMB 시스템의 시험시스템 구현 및 현장 시험결과를 기술한다. 기존 방식보다 멀티미디어 방송성능이 한층 개선된 Advanced T-DMB 시스템은 계층변조 및 터보 코드 방식을 이용하여 기존 T-DMB와 역호환성을 유지하면서 동일한 주파수 대역폭에서 전송률을 최대 2배로 높이기 위해 연구개발되었다. 제안된 시스템의 성능검증을 위해 현장 시험을 하였으며, 그 결과 이동서비스를 목표로 하는 B-모드와 고정 서비스를 목표로 하는 Q-모드에 대해 각각 0.576Mbps, 1.152Mbps의 전송용량이 증가된 것을 확인할 수 있었다.

In this paper, we describes about implementations of Advanced Terrestrial DMB prototype system which can provide high higher efficiency of transmission and better quality of service than Terrestrial DMB(T-DMB) system for performance improvement of conventional mobile multimedia broadcasting system. And also we analyze field test results of the system. Advanced T-DMB system has been developed to increase data rate up to double of conventional T-DMB in same bandwidth while maintaining backward compatibility, using hierarchical modulation and turbo code. We conducted field tests to verify the performance of the proposed system through implementing of test system. As a result, we confirmed 0.576Mbps and 1.152Mbps were added to mode B and mode Q of Advanced T-DMB respectively than T-DMB system.

멀티미디어 스트리밍 데이터는 용량이 매우 크고 순차적으로 접근이 이루어지는 특성이 있어 전통적인 캐슁 환경에서 입출력의 성능을 개선하기 위해 널리 사용되고 있는 LRU 알고리즘이 효과적이지 못한 것으로 알려져 있다. 이에 대한 실험적인 분석은 인터벌 기반 캐슁의 LRU 대비 성능 상의 비교 우위를 통해 입증된 바 있으나, 이론적인 근거가 증명되지는 않았다. 본 논문에서는 멀티미디어 스트리밍 환경을 위한 캐슁의 최적성을 분석하기 위해 캐쉬 성능 평가 모델을 설계하고, 이론적으로 최적인 캐슁 알고리즘을 인터벌 캐슁에 기반해서 설계한다. 그런 다음 설계된 알고리 즘이 스트리밍 데이터의 캐쉬 미스를 최소화하는 교체 알고리즘임을 제안된 모델에 근거한 최적성 분석을 통해 입증한다.

Multimedia streaming data is very large in size and accessed sequentially, making the LRU(Least Recently Used) algorithm widely used to improve I/O performance in traditional caching environments ineffective. Experimental analysis of this has shown the superiority of interval-based caching over LRU, but the theoretical basis has not been proven. In this paper, we design a cache performance model to analyze the optimality of caching for multimedia streaming environments and design a theoretically optimal caching algorithm based on interval caching. Then, we show that the algorithm we design is an optimal algorithm that minimizes cache misses of streaming data based on the proposed model.

최근 이더넷 수동 광 네트워크는 산업에 있어서 뿐만 아니라 효율적인 광대역 서비스를 제공할수 있어 많은 연구가 진행되고 있는 분야이다. PON 네트워크에 있어서 MAC 프로토콜은 TDMA 방식을 기반으로 처리되고 있다. 본 논문에서는 기존의 채널의 시간 슬롯 분배 (대역폭 할당)방식에 있어서의 문제점을 공평성과 QoS 관점으로 살펴보고, 효율적인 자원 이용율을 제공하기 위한 진보된 대역폭 할당 기법을 제안한다. 이방식은 현재 휴지 상태의 ONU들에게 할당된 사용하지 않는 대역폭을 최소화함으로서 모든 ONU 들에게 최대 대역폭 요구를 공평한 범위 내에서 충족 시킬수가 있다.

An Ethernet passive optical network (EPON) is an economical and efficient access network that received significant research attention in recent year. A MAC protocol of the PON, the next generation access network, is based primarily on TDMA (Time Division Multiple Access). In this paper, we addressed the problems of a dynamic bandwidth allocation (DBA) in Fairness and QoS Performance. We augmented the advanced bandwidth allocation algorithms to support efficient resource utilization by reducing the unused remaining bandwidth made by idle state ONUs. Our new proposed advanced bandwidth allocation algorithm can allocate effectively and fairly the bandwidths between end-users.