• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 2001년도 총회 및 춘계학술발표회
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• pp.132-135
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• 2001

To understand and compare tracer transport in fractured and porous media. multiple tracer tests were conducted in Wonju and Uiwang sites. The target media were fractured in Wonju site and porous in Uiwang site. It was known that groundwater flow for the two hydrogeologic systems could be represented using a EPM approach. However, the tracer transport in the two aquifer systems was greatly different. In this study, we analyzed the different tracer transport behavior in the two systems, from which our understanding of the tracer dispersion was greatly enhanced. we used bromide and chloride as tracers.

• Journal of Plant Biology
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• 제19권4호
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• pp.95-99
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• 1976

This work deals with different extraction media and reaction mixtures on photosystem II activity of Spinach chloroplasts. The photoreduction rate of ferricyanide and DPIP by intact chloroplasts which extracted with four kinds of extraction media; S-Tris-N pH 7.2, 8.0, S-Tricine-N pH 7.2, 8.0, was measured in five kinds of reaction mixtures; S-Tris-N pH 7.2, 8.0, S-Tricine-N pH 7.2, 8.0, 0.05 M-Tris pH 7.2. The extraction medium which shows the highest photoreduction rate was S-Tris-N at pH 7.2 and S-Tricine-N at pH 8.0. As to the reaciton mixture, S-Tricine-N pH 8.0 showed the highest rate. On the complex effects of extraction media and reaction mixtures, the highest photordeuction rate of Hill oxidant by intact chloroplasts was obtained by S-Tris-N pH 7.2 extraction medium and S-Tricine-N pH 8.0 reaction mixture. The second highest activity was obtained by S-Tricine-N pH 8.0 extraction medium and reaction mixture.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
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• pp.321-323
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• 2006

The IEEE 802.15.4 uses a CSMA/CA algorithm on access of media. The CSMA/CA algorithm does Random Backoff before the data is transmitted to avoid collisions. The random backoff is a kind of unavoidable delays and introduces the side effect of energy consumptions. To cope with those problems we propose a new media access algorithm, the Priority Based Ordered Media Access (PBOMA) algorithm, which uses different IFSs. The PBOMA algorithm uses Sampling Rate and Beacon Interval to get a different access probability(or IFS). The access probability is higher, the IFS is shorter. Note that The transfer of urgent data uses tone signal to transmit it immediately. The proposed algorithm is expected to reduce the energy consumptions and the delay.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 1998년도 봄 학술발표회 논문집
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• pp.406-413
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• 1998

The distinct element method is improved to consider the charateristics of stress wave propagation in media involving the discontinuous faces. The distinct element method has many advantages to analyse the characteristics of the reflection, refraction and deflection of the waves in nonhomogeneous media. The double-suing connection system is adopted instead of the single-spring connection system because the distinct element cannot be used for analysing the contact behavior between the different materials by only one contact spring. For the verification of the improved code, the results of the numerical analysis are compared with that of the photoelastic experiments which are one or two dimensional wave propagation problem of the nonhomogeneous media including the different accoustic impendence material or voids. It is shown that the characteristics of the stress wave propagation in nonhomogeneous media can be simulated appropriately using the improved distinct element method.

• 간호행정학회지
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• 제16권4호
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• pp.399-408
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• 2010

Purpose: The purpose of this study was to compare the cost using different methods of costing nursing activities for patients with chronic otitis media having surgery. Method: Data were collected from 30 patients who had mastoidectomy and tympanoplasty. To compare the cost, the researchers used three different costing methods; consumed time, resource based relative value scale (RBRVS), and critical pathway (CP). Results: Twenty-six nursing activities for surgical patients with chronic otitis media were found. Total cost was 83,843.7 won using RBRVS. The costliest activity was recording at 9,734.4 won, followed by confirmation of doctors' orders at 9,302.4 won, and injection with infusion pump at 9,072.0 won. There was a difference in nursing activities performed according to the length of hospital stay, and the cost was highest on the surgery day at 13,417.8 won. Comparatively, the total cost was 72,014.4 won using CP. Conclusions: Nursing activities are performed in various forms according to the disease and patient's condition, and different nursing activities are executed according to the length of hospital stay. In order to measure the load of nursing activities and distribute it appropriately, it is necessary to analyze the cost of nursing activities by the process of nursing services performed.

• 한국작물학회지
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• 제50권2호
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• pp.120-124
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• 2005

Expanded rice husk (ERR) is different from commercial rice seedling media in chemical and physical properties such as pH, permeability, and water content. This study was conducted to test a possibility of improving rice seedling growth by improving the texture of ERR as a rice seedling medium. The seedling media used were a commercial seedling medium (CSM), rice husk, and ERR 1, 2, 3, and 4 with different expansion degrees. The pH of the ERHs ranged from 6.3 to 6.8. As the expansion rate increased, ERR particle sizes decreased, and water permeability and absorption rates improved. No significant differences in shoot dry weight and rate of maturity were found among the seedlings cultivated in the different ERH media. However, the mat formation of seedling roots became loose as the expansion rates were decreased. Further studies are necessary to determine the cause of poor root growth in ERH media.

• International Journal of Advanced Culture Technology
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• 제12권2호
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• pp.375-385
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• 2024

In the context of contemporary digital media, virtual influencers have become an increasingly important form of socialization and entertainment, in which emotional expression is a key factor in attracting viewers. In this study, we take Luo Tianyi, a Chinese virtual influencer, as an example to explore how emotions are expressed and perceived through facial expressions in different types of videos. Using Paul Ekman's Facial Action Coding System (FACS) and six basic emotion classifications, the study systematically analyzes Luo Tianyi's emotional expressions in three types of videos, namely Music show, Festivals and Brand Cooperation. During the study, Luo Tianyi's facial expressions and emotional expressions were analyzed through rigorous coding and categorization, as well as matching the context of the video content. The results show that Enjoyment is the most frequently expressed emotion by Luo Tianyi, reflecting the centrality of positive emotions in content creation. Meanwhile, the presence of other emotion types reveals the virtual influencer's efforts to create emotionally rich and authentic experiences. The frequency and variety of emotions expressed in different video genres indicate Luo Tianyi's diverse strategies for communicating and connecting with viewers in different contexts. The study provides an empirical basis for understanding and utilizing virtual influencers' emotional expressions, and offers valuable insights for digital media content creators to design emotional expression strategies. Overall, this study is valuable for understanding the complexity of virtual influencer emotional expression and its importance in digital media strategy.

• 한국언론정보학보
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• 제33권
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• pp.115-167
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• 2006

본 연구는 한국의 대표적인 인터넷 미디어인 <오마이뉴스>가 미국과 이라크 전쟁에 대해 어떠한 보도경향들을 보이고 있으며, 그러한 보도경향들을 지탱하고 있는 서사구조나 담론구조들이 어떻게 구성되어 있는가에 대해 논의하고 있다. 나아가 이러한 서서구조나 담론구조가 이번 사안을 어떠한 방향으로 의미짓고 있으며, 이러한 의미가 우리사회에서 함축하고 있는 바에 대해 논의하고 있다. 본 연구의 분석대상으로 2003년 3월 20일부터 12월 19일까지의 9개월간의 <오마이뉴스>의 기사들을 추출하였으며, 이들을 4가지 국면들로 나누어 분석하였다. 본 연구의 분석방법으로는 담론분석을 중심으로 하였으며, 특히 D. Bell의 '뉴스 텍스트의 담론구조 모델'을 중점적으로 적요하였다. 그리고 나서 뉴스텍스트의 이데올로기 구조를 파악하기 위해 시간구조와 사건구조에 대한 분석도 시도하였다. 본 연구의 분석 결과, 첫째, <오마이뉴스>는 기존 미디어들과는 다른 보도태도와 보도경향을 보이고 있음을 발견하였다. 기존 미디어들이 이번 전쟁에 대한 진행과정에 주목하면서 '스트레이트' 기사에 주력했다면, <오마이뉴스>는 전쟁의 발발원인, 배경, 대처 및 파장 등과 같은 '의견이나 해설 기사'에 주력하였다. 둘째, 기존 미디어들은 전쟁상황, 미국과 이라크의 전투현장, 사상자나 피해자 등과 같은 전투현장에 주목하고 있다면, <오마이뉴스>은 미국과 부시 대통령의 의도, 친미와 반미의 대립, 한국군 파견에 대한 문제제기 등과 같이 전투현장보다는 이 사안과 관련된 여타 사안들에 보다 주목하고 있다. 셋째, 기존 미디어가 사건에 대한 전체의 과정을 추적하는 데 주력하고 있다면, <오마이뉴스>는 이번 사안과 관련된 '의제 설정'이나 '여론 수렴'을 주도하고 있다. 넷째, 기존 미디어들이 서로 비슷한 시각과 입장을 표방하고 있는데 반해, <오마이뉴스>는 이들과는 다른 대안적 견해와 입장을 피력하고 있다. 결론적으로, <오마이뉴스>는 저널리즘 미디어로서 다소 미진한 부분이 없지는 않으나, 이 사안에 대해 '의제를 설정하고', '여론을 주도하며', '새로운 대안적 견해를 제시해' 줌으로써, 우리사회에 대안 미디어로서의 가능성을 보여주고 있다.

• 스마트미디어저널
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• 제2권2호
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• pp.20-27
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• 2013

The concept of social media is top of the agenda for many business executives and decision makers, as well as consultants try to identify ways where companies can make profitable use of applications such as Netflix, Flixster. The social media is playing an increasingly important role as the information sources for customers making product choices etc. With the flourish of Web 2.0 technology, customer reviews are becoming more and more useful and important information resources for people to save their time and energy on purchasing products that they want. This paper proposes the Bayesian Probabilistic Classification algorithm to mine the social media review, and evaluates it by different splits and cross validation mechanism from the real data set. The explored study experimental results show the robustness and effectiveness of proposed approach for mining the social media review.

• Asia pacific journal of information systems
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• 제8권3호
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• pp.119-134
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• 1998

Among several theories to explain how different communication media affect task performance, media richness theory(MRT) is one of the most frequently cited. Recent studies related to the use of communication media, however, have raised the question of the effectiveness of the MRT as a predictor of media choices or of individual effectiveness. The objective of this research is to examine the assumptions of the MRT. MRT proposes that the properties of media are objective in other words, they are inherent and physical attributes recognizable by users. This study experiments on the effects of task characteristics and medium experience on the perceived media richness and social presence. The results of this study did not support the assumptions of the MRT. There was an interaction effects of task characteristics and medium experience on both the perceived media richness and social presence. While the inexperienced computer-mediated communication(CMC) group perceives their medium richer for the unequivocal task, the experienced CMC group perceives their medium equally for the equivocal and the unequivocal task.