• Asian Journal for Public Opinion Research
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• 제10권3호
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• pp.230-253
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• 2022

Based on Goffman's dramaturgical theory and self-objectification framework, this study examined: 1) Chinese female's WeChat self-presentation, 2) the impact of WeChat usage on female self-objectification, and 3) the impact of self-objectification on WeChat self-presentation tactics. An online survey was conducted. The main findings include: 1) most of the participants chose to beautify their pictures and videos before they posted them, 2) the respondents attached higher importance to appearance-based body attributes than competence-based ones, 3) the most frequently applied self-presentation tactic was ingratiation, 4) WeChat usage was not a predictor of Chinese women's self-objectification, and, 5) along with extroversion, self-objectification had an impact on ingratiation, supplication, self-promotion, and exemplification. Meanwhile, use of the electronic curtain and audience sifting to control who can see a post and for how long demonstrated the empowerment of the users when they conduct self-presentation.

• 정보처리학회논문지:컴퓨터 및 통신 시스템
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• 제5권10호
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• pp.339-346
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• 2016

1인 미디어가 개인의 욕구분출과 인터넷의 발달이 맞물리면서 정보화 시대의 대세로 자리매김하였다. 하지만, 인터넷의 접근성은 의도치 않던 사생활 침해 우려를 낳고 있으며 폐쇄적인 SNS의 수요를 중가시키는 실정이다. 본 논문에서는 PWW(Person Wide Web)를 이용하여 1인 미디어를 생성하고 타인과 공유하는 1인 미디어 체계를 제시한다. PWW는 스마트폰과 모바일 앵커, 개인의 클라우드 스토리지로 구성된 웹 기반의 정보체계이다. 현장의 객체에 부착된 모바일 앵커로부터 개인 클라우드 저장소의 주소를 얻고 그 주소에 저장된 웹문서를 가져와 스마트폰의 웹뷰에서 처리한다. 또한, PWW 방식의 1인 미디어 체계를 설명하고 현장에서 1인 미디어를 활용한 예를 제시한다. WWW 방식의 1인 미디오와 PWW 방식의 1인 미디어의 보안성을 비교, 분석하였으며, PWW 방식의 1인미디어가 더 높은 보안성을 갖는 것을 보였다.

• Coupled systems mechanics
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• 제2권4호
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• pp.375-387
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• 2013

Soils consist of an assemblage of particles with different sizes and shapes which form a skeleton whose voids are filled with water and air. Hence, soil behaviour must be analyzed by incorporating the effects of the transient flow of the pore-fluid through the voids, and therefore requires a two-phase continuum formulation for saturated porous media. The present paper presents briefly the Biot's basic theory of dynamics of saturated porous media with u-P formulation to determine the responses of pore fluid and soil skeleton during cyclic loading. Kelvin elements are attached to transmitting boundary. The Pastor-Zienkiewicz-Chan model has been used to describe the inelastic behavior of soils under isotropic cyclic loadings. Newmark-Beta method is employed to discretize the time domain. The response of fluid-saturated porous media which are subjected to time dependent loads has been simulated numerically to predict the liquefaction potential of a semi-infinite saturated sandy layer using finite-infinite elements. A settlement of 17.1 cm is observed at top surface. It is also noticed that liquefaction occurs at shallow depth. The mathematical advantage of the coupled finite element analysis is that the excess pore pressure and displacement can be evaluated simultaneously without using any empirical relationship.

• 한국언론정보학보
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• 제16권
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• pp.108-135
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• 2001

This study examines the structure of the problems of Korean newspaper reporting raised by the civil society. Based on the differences in the mode of presentation, the problems of newspaper reporting were classified into three types; prominent, associated, and isolate problem. The relations among these problems were defined as the degree of co-occurrence in the monitoring articles. A network analysis was conducted to examine the structure of the problems in Korean newspaper reporting. A $33{\times}33$ similarity matrix of the problems was created by analyzing the data from one monitoring report and two weekly media critics newspapers. The results showed that of the 33 problems, most of them were mentioned as prominent or associated problems. The problems related to the news contents were mostly treated as prominent ones, while the problems about the news writing and reporting styles were frequently treated as associated ones. The network structure of newspaper criticism based on the co-occurrence of 33 problems were divided into six clusters. Among them, the most central was the group including the problems of "unfairness,' "biased interpretation," and "vagueness". In addition, the problems were found to have different roles in the network. Of the 33 problems, two were liaisons and four were attached isolates, indicating the hierarchical structure of problems in newspaper reporting. These results were discussed in the light of two viewpoints; the absence of objective criteria in media criticism, and the need for the comparisons of the current study's results with the opinions of newspaper readers and journalists. finally, the implications for the future studies were presented.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권6호
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• pp.1689-1706
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• 2012

The preservation of temporal dependencies among a group of processes that exchange continuous media at runtime is a key issue for emerging mobile distributed systems (MDS), such as monitoring of biosignals and interactive multiuser games. Although several works are oriented to satisfy temporal dependencies, most of them are not suitable for MDSs. In general, an MDS is characterized by the absence of global references (e.g. shared memory and wall clock), host mobility, limited processing and storage capabilities in mobile hosts, and limited bandwidth on wireless communication channels. This paper proposes an asymmetric synchronization protocol to be used at runtime in an MDS without using a common reference. One main aspect of our synchronization protocol is that it translates temporal constraints to causal dependencies of the continuous media data as seen by the mobile hosts. We simulate the protocol by considering a cellular network environment and by using MPEG-4 encoders. The simulation results show that our protocol is effective in reducing the synchronization error. In addition, the protocol is efficient in terms of processing and storage costs at the mobile devices, as well as in the overhead attached per message across the wired and wireless channels.

• 한국환경과학회지
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• 제5권1호
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• pp.25-33
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• 1996

This study was conducted to Investigate the biological treatment capability of MMCMAS(Movinig Media Complete Mixing Activated Sludge) reactor for high strength organic wastewater (Average BOD=800mg/l). And this experimental results were compared previous study for low strength organic wastewater (Average HOD=150mg/l) by the same reactor. In this study, we abtained following conclusions ; (1) The laboratory MMCMAS reactor demonstrated that SBOD removal efficiencies of more than 90% can be achieved at organic Bonding rates of 30.9 gBOD/$m^2$/d for high strength organic wastewater and 39.4 gBOD/$m^2$/d for low strength organic wastewater, respectively. (2) The nitrification rates of MMCMAS reactor was found same results of similiar organic loading rates. (3) The ratio of attached biomass to total biomass on the moving media varied in the range of 40 to 63% and 32 to 94% for high and low strength organic wastewater, respectively. And it was varied at the various concentration of influents for the similiar organic loading rates. The sludge production rates was found approximately 0.37 gVSS/$gBOD_{rem}$. in MMCMAS reactor.

• 상하수도학회지
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• 제24권4호
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• pp.433-442
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• 2010

BER at different packing ratios of bio-ring media(BRM) was tested to investigate the effect of varying hydraulic retention time (HRT) and current density on the nitrate removal and current efficiency. In the preliminary batch mode experiment of BERs, current density was applied at 2.0 A/$m^2$, 4.0 A/$m^2$, 4.8 A/$m^2$, which correspond to the designation of reactor #1, #2, #3, respectively. The reactor #2 showed a highest nitrate removal rate of 162.0 mg $NO_3{^-}$-N/L/d, and the kinetics of nitrate removal rate was defined as the Zero order reaction. In the primary experiment of BERs, four BERs packed with BRM were operated in varying HRT and current, and the packing ratios of reactor #1, #2, #3 and #4 were 0%, 8%, 16%, 24%. respectively. This results of the experiments indicated that the nitrate removal rate and current efficiency were increased significantly cause of growing of autotrophic denitrification microorganisms on the surface of cathode and media by increasing of the current density and decreasing of HRT. However, The decreasing of nitrate removal rate and current efficiencies were observed in the condition of HRT of 5.25 hr and 4.8 A/$m^2$ of current density. With more increasing current density and decreasing of HRT, the hydrogen inhibition occurred at the surface of cathode. Moreover, nitrate removal rate by autotrophic denitrification microorganisms attached on the media surface was observed to be limited by no longer increasing dissolved hydrogen concentration of each reactor. In conclusion, the highest nitrate nitrogen removal and current efficiency could be achieved when the BER was operated at the conditions of 7 hr HRT, current density of 4.0 A/$m^2$, and 16% packing ratio. And it was found that the amount of nitrate removal by microorganisms attached on the surface of cathode and media (BRM) was 178.2 mg/L and 52.2 mg/L respectively. and the amount of nitrate removal per MLVSS was 0.435 g $NO_3{^-}$-N/g $MLVSS{\cdot}d$ and 0.336 $NO_3{^-}$-N/g $MLVSS{\cdot}d$.

• 인지과학
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• 제23권1호
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• pp.97-107
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• 2012

오피니언 마이닝과 정서 분석에 대한 기존 연구에서는 정서 단어에 부정어를 붙일 경우 긍정, 부정의 극성과 값이 뒤바뀐다고 가정하고 부정어를 처리하였다. 그러나 지금까지 정서 단어에 부정어가 발생했을 때 극성이 어느 정도 바뀌는지에 대한 정량적 연구는 없었다. 따라서 본 논문에서는 한국어 정서 단어와 그 부정형에 대해서 정서가와 각성 차원을 측정하였다. 결과, 정서 단어에 부정형이 올 경우 정서가와 각성 차원의 중간 수준을 기준으로 극성을 뒤바꾸고 값은 약 30~50% 약화되었다. 이 결과를 오피니언 마이닝과 정서 분석 연구에서 부정어를 처리하는 기준으로 제시하였다.

• 대한환경공학회지
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• 제35권6호
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• pp.449-455
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• 2013

소규모 하수처리시스템에 다양한 반송비와 고정식 담체를 적용하여 합성폐수에서 질소, 인의 제거를 검토하였다. 담체를 첨가 시 질소의 제거율은 40.1%에서 65.1%로 증가하였으나 COD와 인의 제거에는 영향이 없었다(<5%). 반송을 통해 유량을 2배(2Q)로 증가시킨 경우 질소의 제거율은 7% 정도가 증가하였으나, 인 제거율은 반송비가 증가됨에 따라 31.8에서 26.6%로 감소하였다. 무산소조에서 담체에 부착된 미생물은 약 73.4 $mg/cm^2$로 존재하였으며, FISH분석 결과 탈질 미생물인 Pseudomonas aeruginosa 존재 (약 58%)를 확인하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 추계학술대회
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• pp.281-283
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• 2021

국내 OTT(Over-the-top media service) 시장의 추천 서비스에서 거론되는 대표 업체는 Youtube와 Netflix이다. Youtube는 여러 방법을 거쳐 2016년부터 이용자의 시청 시간을 기록하여 이용하는 알고리즘을 머신러닝에 도입하면서 개인화된 추천을 본격화하였고, Netflix는 사용자의 선택한 영상, 시청 시간대, 영상 시청 기기 등 정보 수집을 통해 이용자를 분류하고 비슷한 시청 패턴을 가진 사람들을 같은 그룹에 묶는 방식과 영상을 직접 시청 후 사람이 태그(메타데이터)를 직접 기록하여 사용자로부터 수집한 정보와 영상에 붙은 태그 정보를 이용한다. 본 논문에서는 수기로 작성하던 영상 미디어의 메타데이터를 자동으로 생성하여 영상미디어의 추천을 개선하기 위한 방법을 제안하고자 한다.