멀티미디어의 분류에 관한 고찰

양단희 평택대학교 자연과학연구소 2005 자연과학연구 Vol.- No.5

멀티미디어는 다양한 형태로 실세계에 존재하게 된다. 그리고 인터넷과 멀티미디어는 불가분의 관계에 있으며 인터넷 자체가 거대한 멀티미디어라고 간주할 수도 있다. 멀티미디어는 어떠한 기준을 설정하느냐에 따라 다양한 분류가 가능하다. 본 논문에서는 멀티미디어가 어디에 저장되어 어떤 형태로 제공되느냐에 따라 프리젠테이션(presentation), 웹 사이트, CD-ROM 타이틀, 가상현실 시스템으로 분류하고 각각에 대해 중요점들을 설명하였다. Multimedia exists in various forms in this real world. And Internet is inseparable from multimedia. Moreover, we can consider Internet itself as an enormous multimedia. Multimedia can be variously classified according to how to establish the criteria for classification. This paper classified multimedia into presentation. web site, CD-ROM titles, virtual reality system by where the multimedia is stored and the form it is supplied. I explained important matters for each.

기계학습에 필요한 풍부한 말뭉치의 구축 방안

양단희,이종연 三陟大學校 2000 論文集 Vol.33 No.1

When we use a machine learning mechanism for natural language processing, unsupervised methods are confronted with data sparseness and supervised methods have difficulties in constructing sufficient training data. These problems come from the fact that we do not have sufficient training resources necessary to training. After discussing such problems specifically, we suggest a method to construct extensive training resources, not in an academic view of natural language processing, but in a practical one.

인터넷 비지니스를 위한 데이터베이스 마케팅 기법

양단희 三陟大學校 2001 論文集 Vol.34 No.1

In the near future, the winner of internet business will be determined by a database marketing technique. Therefore, this paper explains the concept and importance of database marketing on internet. Next, I suggest the method to apply database marketing to internet business. In the construction of internet shopping mall, also, it is important to understand the characteristics of each customer. Personalized information, services, and commodities should be offered according to the needs of each customer. In the end, good database marketing can maximize each customer's satisfaction.

여행 이미지 스키마로부터 역할 원형의 추출

양단희 三陟大學校 2001 論文集 Vol.34 No.1

Taking the image schema of journey and extending the schema across cognitive domains by means of metaphors and metonymies, we proceed to identify and classify possible role archetypes. Hence, we construct a hierarchy of the established role archetypes in consideration for their topology in the cognitive domains. Finally, we show that our approach and its resultant role archetype hierarchy are effective in NLP.

Asymmetry of Magnetic Helicity Flux in Emerging Bipolar Active Regions

Dan Yang,Yunchun Jiang,Jiayan Yang,Yi Bi,Bo Yang 한국천문학회 2014 Journal of The Korean Astronomical Society Vol.47 No.3

We apply differential affine velocity estimator (DAVE) to the Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI) 12-min line-of-sight magnetograms, and separately calculate the injected magnetic helicity for the leading and the following polarities of nine emerging bipolar active regions (ARs). Comparing magnetic helicity flux of the leading polarity with the following polarity, we find that six ARs studied in this paper have the following polarity that injected more magnetic helicity flux than that of the leading polarity. We also measure the mean area of each polarity in all the nine ARs, and find that the compact polarity tend to possess more magnetic helicity flux than the fragmented one. Our results confirm the previous studies on asymmetry of magnetic helicity that emerging bipolar ARs have a polarity preference in injecting magnetic helicity. Based on the changes of unsigned magnetic flux, we divide the emergence process into two evolutionary stages: (1) an increasing stage before the peak flux and (2) a constant or decreasing stage after the peak flux. Obvious changes on magnetic helicity flux can be seen during transition from one stage to another. Seven ARs have one or both polarity that changed the sign of magnetic helicity flux. Additionally, the prevailing polarity of the two ARs, which injects more magnetic helicity, changes form the following polarity to the leading one.

Influence of Ginkgo Biloba Extracts and Their Flavonoid Glycosides Fraction on In Vitro Digestibility

Dan Yang,Xiang-Yu Wang,Chen-Ming Ji,Soon-Teak Hong,Jung-Ah Shin,Ki-Teak Lee 한국식품영양과학회 2013 한국식품영양과학회 학술대회발표집 Vol.2013 No.11

Research on the Relationship between Player Type and MMORPG “Grinding” Type

Dan Yang(양단),Dong-Min Cho(조동민) 한국게임학회 2021 한국게임학회 논문지 Vol.21 No.5

MMORPG 중후반에 “Grinding”으로 인해 소모되는 경우시간과 에너지가 갈수록 많아지고, 반복되다 보면 지루한 느낌이 들기 쉽기 때문에 유저의 이탈을 초래하기 쉽다. 본 논문은 MMORPG “Grinding” 8종 유형에 대한 Richard Bartle의 4가지 플레이어 유형의 선호도의 차이를 연구하고자 SPSS 소프트웨어를 사용하여 수집된 200개의 샘플 데이터에 대한 묘사적 분석, 신뢰성 분석, 단요인 방차 분석을 수행했다. 연구 결과에 따라 MMORPG ’Grinding’ 최적화 방안을 게이머 성향 차원에서 제시했다. In the middle and late period of MMORPG, as more and more time and energies are repeatedly consumed due to Grinding, it is easy for the players to feel bored and quit the game. This paper mainly studies the differences in preferences of four types of players for MMORPG grinding types. Apart from that, SPSS software is used to make descriptive analysis, credibility analysis, and one-way analysis of variance on the 200 survey sample data. Based on the content of the experimental results, this study proposes an optimized design plan for MMORPG grinding from the perspective of player tendency.

Seismic performance of the concrete-encased CFST column to RC beam joints: Analytical study

Dan-Yang Ma,Lin-Hai Han,Xiao-Ling Zhao,Wei-Biao Yang 국제구조공학회 2020 Steel and Composite Structures, An International J Vol.36 No.5

A finite element analysis (FEA) model is established to investigate the concrete-encased concrete-filled steel tubular (CFST) column to reinforced concrete (RC) beam joints under cyclic loading. The feasibility of the FEA model is verified by a set of test results, consisting of the failure modes, the exposed view of connections, the crack distributions and development, and the hysteretic relationships. The full-range analysis is conducted to investigate the stress and strain development process in the composite joint by using this FEA model. The internal force distributions of different components, as well as the deformation distributions, are analyzed under different failure modes. The proposed connections are investigated under dimensional and material parameters, and the proper constructional details of the connections are recommended. Parameters of the beam-column joints, including material strength, confinement factor, reinforcement ratio, diameter of steel tube to sectional width ratio, beam to column linear bending stiffness ratio and beam shear span ratio are evaluated. Furthermore, the key parameters affecting the failure modes and the corresponding parameters ranges are proposed in this paper.

Fully secure non-monotonic access structure CP-ABE scheme

( Dan Yang ),( Baocangwang ),( Xuehua Ban ) 한국인터넷정보학회 2018 KSII Transactions on Internet and Information Syst Vol.12 No.3

Ciphertext-policy attribute-based encryption (CP-ABE) associates ciphertext with access policies. Only when the user’s attributes satisfy the ciphertext's policy, they can be capable to decrypt the ciphertext. Expressivity and security are the two directions for the research of CP-ABE. Most of the existing schemes only consider monotonic access structures are selectively secure, resulting in lower expressivity and lower security. Therefore, fully secure CP-ABE schemes with non-monotonic access structure are desired. In the existing fully secure non-monotonic access structure CP-ABE schemes, the attributes that are set is bounded and a one-use constraint is required by these projects on attributes, and efficiency will be lost. In this paper, to overcome the flaw referred to above, we propose a new fully secure non-monotonic access structure CP-ABE. Our proposition enforces no constraints on the scale of the attributes that are set and permits attributes' unrestricted utilization. Furthermore, the scheme's public parameters are composed of a constant number of group elements. We further compare the performance of our scheme with former non-monotonic access structure ABE schemes. It is shown that our scheme has relatively lower computation cost and stronger security.

Effects of Flavonoids on Physical and Oxidative Stability of Soybean Oil O/W Emulsions

Dan Yang,Xiang-Yu Wang,이정희 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.3

Flavonoids have attracted attention due to pharmacological and antioxidative activities. The effects of flavonoids on the physical and oxidative stabilities of lecithin emulsified soybean oil-in-water (O/W) emulsions were investigated at 25oC during 29 days of storage. Addition of 100 ppm hesperidin, hesperitin, rutin, or quercetin improved the physical stability of O/W emulsions but did not change particle size values, compared to a control with no flavonoids during storage. Quercetin showed the highest antioxidant activity for inhibition of lipid oxidation based on lowered lipid hydroperoxide formation and 2-thiobarbituric acid reactive substances values in emulsions, followed by rutin, hesperitin, and hesperidin. Hesperidin and hesperitin did not affect antioxidative activities in O/W emulsions under metal ion-catalyzed conditions. Addition of hesperidin, hesperitin, rutin, and quercetin to soybean oil O/W emulsions improved the physical and oxidative stability of emulsions lacking added metal ions.