• 한국방송∙미디어공학회:학술대회논문집
• /
• 한국방송공학회 2010년도 하계학술대회
• /
• pp.74-76
• /
• 2010

Digital images or videos are used in modern digital devices. The resolution of HDTV in digital broadcasting system is higher than that of previous analog systems. Also, mobile phone with 3G can provide images as well as video streaming services in realtime. In these circumstances, the visual quality of images has become an important factor. We can make image clear by transient improvement process that reduces transient in edges. In this paper, we present an transient improvement algorithm. The proposed algorithm improves edges by making smooth edge to steep edge. Before performing transient improvement algorithm, edge detection algorithm should be operated. Laplacian operator is used in edge detection, and the absolute value of it is used to calculate gain value. Then, local maximum and minimum values are computed to discriminate current pixel value to raise up or pull down. Compensating value that gain value multiplies with the difference between maximum (or minimum) value and current pixel value adds (or subtracts) to current pixel value. That is, improved signal is generated by making the narrow transient of edge. The advantage of proposed algorithm is that it doesn't produce shooting problem like overshoot or undershoot.

• Journal of Information Processing Systems
• /
• 제16권2호
• /
• pp.261-276
• /
• 2020

Digital contents services are one of the topics that have been intensively studied in the media industry, where various semantic and ontology techniques are applied. However, query execution for ontology data is still inefficient, lack of sufficient extensible definitions for node relationships, and there is no specific semantic method fit for media data representation. In order to make the machine understand digital contents (DCs) data well, we analyze DCs data, including static data and dynamic data, and use ontology to specify and classify objects and the events of the particular objects. Then the formal representation method is proposed which not only redefines DCs data based on the technology of OWL/RDF, but is also combined with media segmentation methods. At the same time, to speed up the access mechanism of DCs data stored under the persistent database, an ontology-based DCs query solution is proposed, which uses the specified distance vector associated to a surveillance of semantic label (annotation) to detect and track a moving or static object.

• 한국정보시스템학회지:정보시스템연구
• /
• 제31권3호
• /
• pp.1-18
• /
• 2022

Purpose The purpose of this study is to analize a psychological and behavioral mechanism for using profile picture management in digital service such as social network service. Profile picture management falls under metadata management and is performed only by those who want it. This means that it, is one of the typical makeup-type digital shadow works (DSWs) which have not been studied yet. Design/methodology/approach This study adopts ground theory method(GTM) as research methodology. GTM, which is one of qualitative methodologies, is for developing theories while most survey based methodologies, which are well adopted in much research for information systems, are for validation of theories. By interviewing ten users, the data are collected and analyzed by open coding, axis coding with paradigm model, and selective coding. Findings In result, 39 codes are found and classified into 29 sub classes and 15 classes. These 15 classes are organized by paradigm model which derives core code of profile picture management as 'voluntary management tasks to experience small pleasures with intermittent attention'. Finally, based on the paradigm model and the core code, the story line, which can explain profile picture management, is suggested.

• 디지털융복합연구
• /
• 제14권6호
• /
• pp.21-32
• /
• 2016

한국 전쟁 이후 태어난 베이비부머 세대는 우리나라 전체 인구의 약 15% 가량을 차지하면서 매우 빠른 속도의 고령화를 주도하는 세대이다. 2012년부터 본격적으로 은퇴기에 접어드는 베이비부머 세대들은 2020년에는 전체 은퇴자 중 약 80%가 넘을 것으로 예상된다. 그들은 소득수준과 교육수준이 높고 경제적으로 여유가 있기 때문에 여가 활동 중의 하나인 여행을 즐기는 것이 은퇴기의 핵심이 될 것으로 보여 진다. 따라서 본 연구는 베이비부머소비자의 라이프스타일과 여행상품의 속성유형을 연구하였다. 그 결과, 베이비부머 세대는 현 세대의 노인들에 비해 구매력을 바탕으로 적극적인 소비 활동을 하고 있었으며, 건강 및 여가지향과 가족지향적인 라이프스타일을 가지고 있었다. 향후 그들이 여행 상품을 선택할 때에는 여행사, 교통수단, 여행거리, 여행동반자를 가장 많이 고려하는 것으로 나타났다.

• 디지털융복합연구
• /
• 제13권1호
• /
• pp.525-533
• /
• 2015

본 연구는 여대생들 간의 메이크업에 대한 관심과 인지도 파악하고자 메이크업에 대한 의식 조사를 통하여, 인식유형별로 메이크업에 따른 심리와 선호하는 메이크업 패턴을 조사였다. 메이크업이 개인에게 정서적으로 자신감과 긍정적 사고를 하는데 도움을 주며, 타인에 대한 사회적 예의의 한 범주라고 생각하였다. 메이크업 인식 차이에 따른 대상의 그룹핑은 이미지 관조군 수용군 관망군 대응군으로 분류 할 수 있었다. 인식 차이에 따른 4가지 유형의 메이크업 관심도는 세부적으로 약간의 차이는 있었으나 메이크업 행위가 대인관계 형성 시 높은 필요도를 차지하고 있었으며, 메이크업 패턴은 피부 톤을 중요시하는 자연스러운 스타일을 선호하였다. 이처럼 현재 뷰티 트렌드의 시장의 주 고객층을 형성하고 있는 20대 여대생의 메이크업에 관한 설문조사를 한 결과 트렌드 메이크업 행위에 대한 관심도와 인지도를 파악할 수 있었으며, 본 연구의 결과를 뷰티 트렌드 개발과 마케팅에 적극 활용하면 다양하고 효과적인 미용문화를 창조할 수 있을 것으로 사료된다.

• 한국컴퓨터정보학회논문지
• /
• 제21권1호
• /
• pp.181-189
• /
• 2016

This study examined three elementary school computing curriculum - the CSTA K-12 computer science standards, the computing programme of the national curriculum in England, and the 2015 national curriculum in Korea - focusing on the educational objectives with the perspective of the revision of Bloom's Taxonomy of Educational Objectives. The CSTA K-12 computer science standards mainly addressed applying procedural knowledge and using digital technology is the main theme. The computing programme in England concentrated on understanding factual and conceptual knowledge of computer science, such as algorithms. The 2015 national curriculum also addressed applying procedural knowledge, but the main focus is making softwares and robots. The findings of this comparative analysis suggest that it is needed to set up concrete educational objectives for lower grade and make them related to the secondary education to make more coherent elementary-level learning objectives. And elementary-level computing learning objectives are needed to be organized with the perspective of knowledge and cognitive process level.

• Progress in Superconductivity
• /
• 제6권1호
• /
• pp.7-12
• /
• 2004

Due to the very fast switching speed of Josephson junctions, superconductive digital circuit has been a very good candidate fur future electronic devices. High-speed and Low-power microprocessor can be developed with Josephson junctions. As a part of an effort to develop superconductive microprocessor, we have designed an RSFQ 4-bit ALU (Arithmetic Logic Unit) in a pipelined structure. To make the circuit work faster, we used a forward clocking scheme. This required a careful design of timing between clock and data pulses in ALU. The RSFQ 1-bit block of ALU used in this work consisted of three DC current driven SFQ switches and a half-adder. We successfully tested the half adder cell at clock frequency up to 20 GHz. The switches were commutating output ports of the half adder to produce AND, OR, XOR, or ADD functions. For a high-speed test, we attached switches at the input ports to control the high-speed input data by low-frequency pattern generators. The output in this measurement was an eye-diagram. Using this setup, 1-bit block of ALU was successfully tested up to 40 GHz. An RSFQ 4-bit ALU was fabricated and tested. The circuit worked at 5 GHz. The circuit size of the 4-bit ALU was 3 mm ${\times}$ 1.5 mm, fitting in a 5 mm ${\times}$ 5 mm chip.

• 인터넷정보학회논문지
• /
• 제8권2호
• /
• pp.67-76
• /
• 2007

SFPI 모듈은 $SFP-MSA^2$ 규격에 의해 A0 및 A2의 메모리 영역에 데이터들이 저장된다 본 논문에서는 공장 자동화를 위하여 프로그래밍 언어 중 AGILENT의 $VEE^3$를 이용하였으며, SFP모듈의 광학 특성 및 SFP-MSA 규정에 따라 Digital Diagnostic Monitoring Interface가 가능하도록 LD Driver IC 내부에 $RS232^4$ 통신을 이용하여 해당 레지스터 번지에 정확한 값을 입력하도록 프로그램을 설계하고 개발하여 생산현장에 적용하였으며 6-시그마 이상의 효율을 갖는 시스템을 구축하였다.

• 디지털산업정보학회논문지
• /
• 제11권2호
• /
• pp.153-166
• /
• 2015

This paper proposes a trans-media branding for the trans-media-based cultural content marketing strategy. Trans-media brand analytical framework is proposed with previous studies. And mobile messenger Character 'Line Friends' is analyzed for the text. Trans-media branding is accessible through a multi-platform in the technological environment. Consumer culture, as well as participate include business models to generate revenue also as brand equity. While the character elements that make up the story from the perspective of cultural content storytelling act as an independent cultural goods. Character is segmented elements. Therefore, trans- media branding of the characters are more meaningful. 'Line Friends' trans-media branding can be summarized as follows: First, it takes advantage of the characteristics of the existing Information-Technology-based mobile. Second, it puts consistently found the content of the attributes of Mobile Messenger 'communication' and 'friendship'. And third, while the content of each platform is constantly linked with other platforms, the brand is positioned inside the window effect.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2001년도 춘계학술대회논문집C
• /
• pp.445-450
• /
• 2001

DVD(Digital Versatile Disk) is the data storage media devised to make high storage density and high data input/output possible. Therefore higher rotational speed and better accuracy in optical pick-up are required compared with the existing optical storage device. These operational functional requirements are concerned with abilities of optical storage device. Especially, High rotational speed is deeply concerned with the noise and vibration of optical storage device, is important problem in development of optical storage device so much. This paper propose a new concept ROM media of optical storage device named as Cylindrical ROM media, and evaluate this by means of Axiomatic approach and empirical data.