• Title/Summary/Keyword: (순)기술적 효율성

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Screen Content Coding Analysis to Improve Coding Efficiency for Immersive Video (몰입형 비디오 압축을 위한 스크린 콘텐츠 코딩 성능 분석)

  • Lee, Soonbin;Jeong, Jong-Beom;Kim, Inae;Lee, Sangsoon;Ryu, Eun-Seok
    • Journal of Broadcast Engineering
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    • v.25 no.6
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    • pp.911-921
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    • 2020
  • Recently, MPEG-I (Immersive) has been exploring compression performance through standardization projects for immersive video. The MPEG Immersion Video (MIV) standard technology is intended to provide limited 6DoF based on depth map-based image rendering (DIBR). MIV is a model that processes the Basic View and the residual information into an Additional View, which is a collection of patches. Atlases have the unique characteristics depending on the kind of the view they are included, requiring consideration of the compression efficiency. In this paper, the performance comparison analysis of screen content coding tools such as intra block copy (IBC) is conducted, based on the pattern of various views and patches repetition. It is demonstrated that the proposed method improves coding performance around -15.74% BD-rate reduction in the MIV.

Importance Analysis on the Quality of Hotel Social Network Service (호텔기업의 소셜네트워크서비스 품질 중요도 분석)

  • Park, Hyun-Jee;Oh, Am-Suk;Kim, Young-Ha;Lee, Joung-Sil
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.1
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    • pp.176-183
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    • 2013
  • This study is focused on analyzing the quality importance of hotel SNS(social network service). And by reviewing precedent papers and references regarding concept and quality factors about SNS in hotel industry, it drew proper criteria to select priorities and evaluate hotel SNS quality using AHP. The important factors based upon related theories are suggested in this paper such as information quality, system quality, service quality, interface quality and emotional quality. The survey for empirical study was executed with hotel employees and total 149 questionnaires were used for this study. We used AHP for statistical analysis, As the results, the most important factor is emotional quality factor and the next is interface quality factor.

Volatile Fatty Acid Production from Saccharina japonica Extracts by Anaerobic Fermentation: Evaluation of Various Environmental Parameters for VFAs Productivity (혐기성 발효에 의한 다시마 추출물로부터 휘발성 유기산 제조: 휘발성 유기산 생산성에 대한 환경적 영향인자 평가)

  • Choi, Jae Hyung;Song, Min Kyung;Chun, Byung Soo;Lee, Chul Woo;Woo, Hee Chul
    • Clean Technology
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    • v.19 no.2
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    • pp.148-155
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    • 2013
  • Volatile fatty acids (VFAs) production from marine brown algae, Saccharina japonica, was investigated in anaerobic dark fermentation. In order to evaluate the VFAs productivity, various experimental parameters (i.e., physicochemical pre-treatment, microorganism inoculation ratio, substrate concentration, and pH) were evaluated. According to the physicochemical pre-treatment methods, the maximum concentrations of VFAs were obtained in the order of sulfuric acid, subcritical water and subcritical water with lipid-extraction. Also, we investigated the operating parameters such as microorganism inoculation ratio (MV/M = 10 to 30), the substrate concentration (18.0 to 72.0 g/L) and pH (6.0 to 7.0) in sulfuric acid pre-treatment method. When the substrate concentrations were 18.0, 36.0, 54.0 and 72.0 g/L at $35^{\circ}C$, microorganism inoculation ratio 15, pH 7.0 for 372 hours, the maximum concentrations of VFAs were respectively 9.8, 13.9, 18.6 and 22.3 g/L. The change in VFAs concentrations was detected that acetic- and propionic acids increased according to increasing pH, while the butyric acid increased with decreasing pH. The VFAs obtained from concentration and separation process may be used as basic chemistry materials and bio-fuel, and they will expect to produce alternative energy of fossil fuel.

A Study on Management and Present-Condition of Invasive Alien Species (외래식물 분포 및 관리방안)

  • Park, Sang-Heon;Lee, Hae-Seung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.11
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    • pp.488-496
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    • 2018
  • This study examined the Gangwon Province's current implementation of its elimination of invasive plants and explored a plan to effectively manage invasive plants. The percentage of the distribution of the plants was 39.6% for riverside areas, 23.3% for roadside areas, 12.4% for roadside & riverside areas, and 4.6% for areas around farm land and river banks. To ensure the systematic management of invasive plants, the current study suggests a) developing an invasive plants monitoring and management system; b) reinvigorating the participation of residents, private organizations, and military posts; c) planting of native replacement plants and the conversion of the locations as attractions, and d) nurturing the project for using invasive plants. For policy directions to be pursued based on the results of the study, the following are suggested: a) improving laws and systems regarding invasive plants, b) developing a cooperative system for managing invasive plants, c) implementing the training of civilian professionals, d) implementing the elimination of invasive plants, e) developing replacement plants for cities and counties, f) fostering industries that tap into invasive plants, and g) using the Han River Water System Management Fund for funding and greater efficiency.

Colorant Extracting and Its Storage Stability from Sorghum (수수에서의 색소 추출과 저장 안정성)

  • Bae, Do Gyu;Lee, Sung Eun
    • Current Research on Agriculture and Life Sciences
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    • v.28
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    • pp.9-15
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    • 2010
  • Extraction Efficiency of colorants from sorghum and its storage stability were examined according to the various extracting and storage conditions in this study. The obtained results were as follows ; The absorbance values of extracted colorants were increased with increasing extract time and temperature. The extraction at pH 4 extract was most efficient among the various pH conditions. In the juice extractor system, the amount of extracted colorant was more in distilled water pre-treatment than pH 5, but it was more in pH 5 in the long time pre-treatment above 20 hour. The color of extract solutions changed through variation of the pH. Its color changed from light yellow to heavy yellow finally red ton by pH increasing. The Methionine addition gave an effect on the storage stability of colorant solution and then had better storage stability. And so it delayed the color change up to storge period 18th day and the stabilizing effect was revealed in order of Methionine 10mmol-addition>20mmol-addtion>non-addtion.

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A Study on the Influence of Business performance on the Adoption Factors of Information Systems in Information and Communications Industries (정보시스템 도입 요인이 기업 성과에 미치는 영향에 관한 연구 - 정보통신산업 중심으로-)

  • Yi, Seon-Gyu;Kim, Woo-Bong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.8 no.3
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    • pp.576-592
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    • 2007
  • We, in this study, tried to examine the influence of business environment, organization structure and information technology characteristics used on the performance of the information systems in Information and Communications Industries. The result shows that frequency of system usage and users' satisfaction are positively affected by the factors of business environment, organizational structure and information-technology. The user satisfaction of the system is affected by the frequency of system usage. Both financial performance and non-financial performance are affected by the frequency of the systems usage and user satisfaction of the system. With path analysis, we verified the overall model goodness-of-fit verified for the research model. The result shows that organization structureand technological factors are positively related to the frequency of usage and user satisfaction of the system, while the environmental factors are not. The frequency of system usage is not linked to both financial and non-financial performance. The user satisfaction of the system does not affected to the financial performance. In conclusion, the usage frequency and user satisfaction of the system are the moderating variables affecting business performances. These two variables are affected by the environment, organization structure and information technology. The Path analysis also supports the relationships among these variables.

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Mobile Remote Healthcare in Ubiquitous Computing Environments (유비쿼터스 환경에서 모바일을 이용한 원격 헬스케어)

  • Kang, Eun-Young;Im, Yong-Soon
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.8 no.6
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    • pp.55-61
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    • 2008
  • In this paper, we proposed a multi-agent based healthcare system (MAHS) which is the combination of medical sensor module and wireless communication technology. This MAHS provides wide services to mobile telemedicine, patient monitoring, emergency management, doctor's diagnosis and prescription, patients and doctors, information exchange between hospital workers in a long distance. Also, MAHS is connected to Body Area Network (BAN) and a doctor and hospital workers. In addition, we designed and implemented extended JADE based MAHS that reduces hospital server's burden. Agents gather, integrate, and deliver the collected patient's information from sensor, and provide presentation in healthcare environment. Proposed MAHS has advantage that can handle urgent situation in the far away area from hospital like Islands through PDA and mobile device. In addition, by monitoring condition of patient (old man) in a real time base, it shortens time and expense and supports medical service efficiently.

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The Introducing voice -based public services for strengthening the accessibility of the social vulnerables and open public communication (사회적 약자의 접근성 강화와 열린 공공소통을 위한 음성기반서비스 도입의 발전적 방안과 시사점)

  • Song, Jinsoon
    • Journal of Intelligence and Information Systems
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    • v.28 no.2
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    • pp.279-306
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    • 2022
  • Public institutions and governments develop discussions on the premise that they can facilitate smooth public communication with the socially vulnerable by promoting citizens' welfare by providing voice-based service chatbots to citizens. The purpose of the study is to propose a plan for intelligent governments to provide quick and efficient administrative services by efficiently managing knowledge and information within and outside government organizations based on ICT and facilitating access and use of information for citizens, especially vulnerable groups. This paper confirms that citizens' attitudes, perceptions, and expectations for public institutions ahead of voice-based service provision are positive through small surveys and interviews with experts with knowledge of artificial intelligence, discuss the technical aspects of voice-based services, the significance and necessity of public institutions. In addition, the government and public institutions are considering the implications of using and providing voice-based services. As a result, chatbot's voice-based service is of great significance in providing an opportunity and platform for wider citizens to participate in intelligent government, to strengthen information accessibility, guarantee and strengthen human rights and basic rights of the socially vulnerable.

The Impact of Nurses' Attitude toward Dignified Death and Moral Sensitivity on Their End-of-Life Care Performance (간호사의 품위 있는 죽음태도와 도덕적 민감성 정도가 임종간호수행에 미치는 영향)

  • Jo, Kae Hwa;Kim, Yeon Ja
    • Journal of Hospice and Palliative Care
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    • v.16 no.4
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    • pp.223-231
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    • 2013
  • Purpose: This study was conducted to explore how nurses' attitude toward dignified death and moral sensitivity affect their end-of-life care performance. Methods: Study participants were 172 nurses who work at university hospitals in a metropolitan city in Korea. Data were collected from June 20 through August 13, 2012 using the Dignified Death Scale, Moral Sensitivity Scale, and End-of-Life Care Performance Scale. Data were analyzed using the SPSS/WIN 19.0 program. Results: Factors affecting nurses' end-of-life care performance included moral sensitivity, dignified death and education level. Conclusion: Moral sensitivity, dignified death and education level should be considered when developing an educational program for nurses' end-of-life care performance.

Probe Study on the Failure Factors of Venture Companies (벤처기업의 부실요인에 대한 탐색적 연구)

  • Lee, Hoon;Hong, Jae-Bum
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.12 no.1
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    • pp.25-31
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    • 2017
  • The objective of this study is to find the failure factors of venture companies. We analyze 210 troubled venture companies, all of which have been under guarantee from the Korea Technology Finance Corporation over the last three years. Methods of analysis for failure factors are as follows. First, we categorize the failure factors into the four different types based on growth and profitability indicators in the financial statements of targeted venture companies. Then we analyzed the failure factors of the subject companies based on the troubled guarantee reports made by the Korea Technology Finance Corporation. If a venture company under its guarantee program falls into insolvency, the Korea Technology Finance Corporation make the troubled guarantee report to find out the failure factors and evaluate the recovery potentials. We identify 374 failure factors of venture companies through the analysis. The most prominent among them are deteriorating of business environments (79 factors) and decreasing or withdrawing orders from major suppliers (54 factors) due to bankruptcies or change in business plans. They are followed by slowing collection of accounts receivable (31 factors), dropping or frozen product price (24 factors) due to intensifying competition and escalating pressures from major suppliers, rising raw material costs both at home and abroad (21 factors). In addition, the nuclear power plant disaster in Japan, shut-down of the Kaesong Industrial Complex and subsequent lawsuits, delay in technology development projects, high cost-low efficiency management structure, etc., are also revealed as new factors causing trouble for venture companies.

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