• 디지털융복합연구
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• 제14권2호
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• pp.1-18
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• 2016

이 논문은 공공외교의 관점에서 자국의 이익과 관련된 국제 이슈에 대해 중국 언론과 한국 언론의 보도행태를 AIIB 출범에 관련된 기사를 통해 분석했다. 분석결과, AIIB 이슈에서 중국 신문은 중국 정부의 성명과 주장을 세계에 공표하고, 바람직한 국가 이미지를 구축하며 외국 정부의 정책 결정에 영향력을 행사하려는 공공외교의 목표에 부합하는 수단으로서 작용하고 있음이 확인되었다. 따라서 중국 언론은 미디어 공공외교의 세 가지 패러다임 가운데 도구주의 패러다임으로 규정할 수 있다. 중국 신문의 도구주의 패러다임은 언론의 소유 구조에서 기인한다. 한국 신문의 경우는 미디어 공공외교 패러다임의 대외정책 상관성에 있어서 도구주의를 제외한 문화주의와 전문가주의 패러다임이 혼재되어 있다. 그러나 기사형식에서 AIIB가 국가의 정치 경제에 미치는 영향에 관한 전망을 포함한 기획기사가 크게 부족한 점 등으로 미뤄볼 때, 성숙한 담론경쟁과 정책경쟁이라는 측면이 강조되는 전문가주의 패러다임보다 문화주의 패러다임이 더 유사하다고 결론지을 수 있다. 결론적으로 본 연구는 언론의 소유 구조가 국가이익과 관련된 공공외교 이슈에 관해서도 주요한 변인임을 입증하였다.

• 디지털융복합연구
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• 제12권5호
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• pp.377-394
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• 2014

본 연구는 전북지역 방송3사가 버스파업이라는 사회적 갈등을 어떤 방식으로 보도하였으며, 방송사 간의 보도의 차이는 무엇인지 프레임분석을 통해 알아보았다. 분석결과 형식적 프레임에 있어 방송 3사 모두 일화 중심적 프레임의 비율이 상대적으로 높게 나타나, 뉴스보도가 과격시위와 강경투쟁 등 사건중심에 초점을 맞추고 있으며 노사 갈등 사안에 관한 근본원인에 대한 심층적인 보도가 부족함을 알 수 있다. 내용적 프레임에서는 파업의 해결과정이나 대안을 제시하는 민주적 절차프레임이나 제도개선 프레임은 부각되지 못하고 갈등대치 프레임이 강하게 나타났다. 결과적으로 버스파업에 대한 뉴스보도는 파업이 발생하게 된 근본원인과 배경에 대한 심도 깊은 접근과 대안적인 해결방안이 부족했으며, 이슈에 대한 부정적인 시각 이외에 다양한 목소리와 현상을 보다 심층적으로 접근하기 위한 노력이 필요한 것으로 나타났다.

• 산업경영시스템학회지
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• 제46권1호
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• pp.32-41
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• 2023

Recently, many studies are being conducted to extract emotion from text and verify its information power in the field of finance, along with the recent development of big data analysis technology. A number of prior studies use pre-defined sentiment dictionaries or machine learning methods to extract sentiment from the financial documents. However, both methods have the disadvantage of being labor-intensive and subjective because it requires a manual sentiment learning process. In this study, we developed a financial sentiment dictionary that automatically extracts sentiment from the body text of analyst reports by using modified Bayes rule and verified the performance of the model through a binary classification model which predicts actual stock price movements. As a result of the prediction, it was found that the proposed financial dictionary from this research has about 4% better predictive power for actual stock price movements than the representative Loughran and McDonald's (2011) financial dictionary. The sentiment extraction method proposed in this study enables efficient and objective judgment because it automatically learns the sentiment of words using both the change in target price and the cumulative abnormal returns. In addition, the dictionary can be easily updated by re-calculating conditional probabilities. The results of this study are expected to be readily expandable and applicable not only to analyst reports, but also to financial field texts such as performance reports, IR reports, press articles, and social media.

• 한국언론정보학보
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• 제35권
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• pp.181-210
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• 2006

본 연구는 식품 안전을 둘러싼 위험 상황을 보도하는 언론의 보도 프레임을 추출, 언론이 위험 상황을 위기의 사회 현실로 구축해가는 양상을 분석하는 것을 목적으로 한다. 이를 위해 1989년 삼양라면 우지파동에서 2005년 김치 기생충 알 검출 사건에 이르는 11개 식품안전 사고를 보도한 언론보도 내용을 대상으로 미디어 프레임을 분석, 각 프레임을 이루는 장치를 통해 언론이 위기를 구축해가는 양상을 추적했다. 분석에 사용된 프레임은 책임소재, 갈등, 인간적측면의 부각, 경제적 결과, 도덕성 등 다섯 가지 프레임이었으며, 연구 결과 이들 프레임에는 위기 확산, 책임 소재, 갈등 부각 등의 현저성이 두드러졌다. 특히 각 프레임을 구성하는 행위자는 가해자와 피해자라는 이분법적 대비 구조를 나타냈다. 기사에 등장하는 행위의 주체인 식품업자, 정부 및 해당관청, 소비자, 전문가 등은 이러한 갈등, 혹은 대비 구조의 프레임 안에서 때론 가해자로, 때로는 피해자로 틀짓기 되며 위험의 상황을 확산, 증폭 시키면서 소비자들의 혼란을 야기하고 위기의 사회현실을 구축하는 것으로 나타났다.

• 디지털융복합연구
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• 제19권2호
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• pp.509-514
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• 2021

코로나바이러스감염증-19(COVID-19)의 유행은 의료 현장에서의 비대면 진단, 관찰, 처치에 대한 요구를 더욱 가속화 시켰고, 이는 의료 로봇에 대한 관심증대로 이어지고 있다. 저자들은 국가 기관 보도 자료, 온-오프라인 언론 보도 기사, 국내·외 로봇 기업 보도 자료들의 분석을 통해 포스트코로나 시대의 방역 의료 로봇이 활용되어야 할 방향에 대해 전망하고자 한다. COVID-19의 유행은 의료 로봇에 대한 관심을 높이게 하였고, 소독, 물류 이송뿐 아니라 감염병이 의심되는 상황에서의 선별 검사, 환자에 대한 감시, 격리 환자에 대한 원격 진료 지원, 가족과의 화상 통화 등의 업무를 수행할 수 있는 의료 로봇의 적용 등이 필요하게 되었다. 따라서 로봇의 상용화에 따른 다양한 문제점들에 대해 충분한 고찰을 기반으로 향후 의료 로봇의 올바른 개발과 적용 및 이를 검증하는 실증적 연구들이 지속되어야 할 것으로 보인다.

• 대한치과보철학회지
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• 제36권3호
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• pp.453-467
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• 1998

This study helps to clarify conflicting reports by comparing the physical properties and accuracy of complete denture processed by the pack and press technique, continuous- pressure injection technique(SR-Ivocap system) and Mark press technique. The 6 different specimens have been evaluated using the SEM, Impact test, DSC (Differential Scanning Calorimetry) and DMTA (Dynamic Mechanical Thermal Analysis). Each sample was made of SR-Ivocap resin and QC-20 resin by different processing methods. The results were as follows ; 1. As the result of the observation on the fracture surface of resin by use of SEM, sample SR-Ivocap resin cured by continuous pressure injection method showed the most homogeneous structure. This is why molecules in SR-Ivocap resin have no orientation. 2. As the result of the Impact test in order to measure the deformity, fracture energy and impact resistance of resin, the samples with QC-20 acrylic resin and SR-Ivocap resin cured by continuous pressure injection method were exellent. 3. In consequence of measuring ${\alpha}$-glass transition temperature by use of DSC on the basis of temperature change, the glass transition temperatures of sample QC-20 resin cured by pack and press method and sample SR-Ivocap resin cured by continuous pressure injection method were very similar. Thus volumetric stability could not be evaluated only by glass transition temperature. 4. In comparing volumetric stability data by DMTA, the glass transition temperature(Tg) showed $137.88^{\circ}C$ at sample QC-20 resin cured by pack and press method and $139.78^{\circ}C$ at sample SR-Ivocap resin cured by continuous pressure injection method. Therefore sample SR-Ivocap resin cured by continuous pressure injection method seems to be superior to sample QC-20 resin cured by pack and press method in the dimensional stability at high temperature. 5. In comparing storage modulus data by DMTA, the storage modulus of sample SR-Ivocap resin cured by continuous pressure injection method was higher than that of sample QC-20 resin cured by pack and press method. So. sample SR-Ivocap resin cured by continuous pressure injection method seems to be superior to sample QC-20 resin cured by pack and press method in impact strength.

• 대한간호학회지
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• 제52권3호
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• pp.291-307
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• 2022

Purpose: The aims of study were to identify the main keywords, the network structure, and the main topics of press articles related to nurses that have appeared in media reports. Methods: Data were media articles related to the topic "nurse" reported in 16 central media within a one-year period spanning July 1, 2019 to June 30, 2020. Data were collected from the Big Kinds database. A total of 7,800 articles were searched, and 1,038 were used for the final analysis. Text network analysis and topic modeling were performed using NetMiner 4.4. Results: The number of media reports related to nurses increased by 3.86 times after the novel coronavirus (COVID-19) outbreak compared to prior. Pre- and post-COVID-19 network characteristics were density 0.002, 0.001; average degree 4.63, 4.92; and average distance 4.25, 4.01, respectively. Four topics were derived before and after the COVID-19 outbreak, respectively. Pre-COVID-19 example topics are "a nurse who committed suicide because she could not withstand the Taewoom at work" and "a nurse as a perpetrator of a newborn abuse case," while post-COVID-19 examples are "a nurse as a victim of COVID-19," "a nurse working with the support of the people," and "a nurse as a top contributor and a warrior to protect from COVID-19." Conclusion: Topic modeling shows that topics become more positive after the COVID-19 outbreak. Individual nurses and nursing organizations should continuously monitor and conduct further research on nurses' image.

• Structural Engineering and Mechanics
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• 제52권2호
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• pp.427-443
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• 2014

This paper presents detailed analysis of the internal forces of interior beam-column joints of reinforced concrete (RC) frames under seismic action, identifies critical joint sections, proposes consistent definitions of average joint shear stress and average joint shear strain, derives formulas for calculating average joint shear and joint torque, and reports simplified analysis of the effects of joint shear and torque on the flexural strengths of critical joint sections. Numerical results of internal joint forces and flexural strengths of critical joint sections are presented for a pair of concentric and eccentric interior connections extracted from a seismically designed RC frame. The results indicate that effects of joint shear and torque may reduce the column-to-beam flexural strength ratios to below unity and lead to "joint-yielding mechanism" for seismically designed interior connections. The information presented in this paper aims to provide some new insight into the seismic behavior of interior beam-column joints and form a preliminary basis for analyzing the complicated interaction of internal joint forces.

• Advances in materials Research
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• 제2권1호
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• pp.65-75
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• 2013

Heterogeneous photocatalysis is a rapidly developing field in environmental engineering. It has a great potential to cope with the increasing pollution in the air. The addition of a photocatalyst to ordinary building materials such as tiles, concrete, paints, creates environmental friendly materials by which air pollution or pollution of the surface itself can be controlled and diminished. This work reports the results of the laboratory research, especially carried out towards air purifying action and self-cleaning measurements. In particular the research was focused on the study of the photocatalytic behavior of industrially prepared tiles produced starting from commercial micro-sized $TiO_2$. Air purification action has been investigated through NOx degradation tests. On the contrary, the degradation of pollution at the surface, also called as self-cleaning action, is verified by the degradation of two different organic dyes: Rhodamine B (red color) and Metanil yellow (yellow).

• Structural Engineering and Mechanics
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• 제24권4호
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• pp.395-410
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• 2006

This paper reports the result of an investigation into wave propagation in orthotropic laminated piezoelectric cylindrical shells in hydrothermal environment. A dynamic model of laminated piezoelectric cylindrical shell is derived based on Cooper-Naghdi shell theory considering the effects of transverse shear and rotary inertia. The wave characteristics curves are obtained by solving an eigenvalue problem. The effects of layer numbers, thickness of piezoelectric layers, thermal loads and humid loads on the wave characteristics curves are discussed through numerical results. The solving method presented in the paper is validated by the solution of a classical elastic shell non-containing the effects of transverse shear and rotary inertia. The new features of the wave propagation in laminated piezoelectric cylindrical shells with various laminated material, layer numbers and thickness in hydrothermal environment and some meaningful and interesting results in this paper are helpful for the application and the design of the ultrasonic inspection techniques and structural health monitoring.