• 통상정보연구
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• 제16권4호
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• pp.55-75
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• 2014

본 연구는 국내 ICT 제조업과 서비스업의 경쟁력 강화를 위한 기초 연구로서 효율성과 생산성 추이 및 생산성의 결정요인을 분석하는 것을 목적으로 하였다. 구체적으로 본 연구는 ICT산업의 효율성 분석을 위해 ICT 제조업 23개 업종과 ICT 서비스업 18개 업종에 대하여 2007년부터 2011년까지 5년간 규모의 수익불변을 가정한 DEA(Data Envelopment Analysis)의 CCR모형과 규모의 수익가변을 가정한 BCC모형을 통해 기술효율성과 순수기술효율성의 정태적 효율성을 살펴보고, 기술효율성에 대한 DEA/Window 분석과 Malmquist 생산성 지수를 이용하여 동태적 효율성을 분석하였다.

• 한국산업정보학회논문지
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• 제14권1호
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• pp.32-42
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• 2009

정보통신산업은 성장성이 높은 산업으로 세계경제성장을 주도하고 있으며 경제전반에 지대한 파급효과와 경제구조 고도화에 크게 기여하고 있다. 정보화 사회를 구현하는 기반산업으로서 전 세계에 걸쳐 기술개발을 통한 비약적인 발전이 가능한 산업이 정보통신산업이라고 할 수 있다. 특히, 기술혁신이 매우 급속하여 다른 산업에 대한 기술적 파급 효과가 크고 기술인력에 대한 의존도가 매우 높은 고도의 기술집약적 산업이다. 본 연구의 목적은 국내 정보통신산업체의 효율성을 DEA기법으로 분석함으로써 벤치마킹의 대상이 될 수 있는 정보통신업체의 경영효율성을 분석하였으며, 비효율적인 기업을 위한 각 기업이 개선시켜야하는 투사값을 제시함으로써 기업의 효율성을 위한 수치를 제공하고자 한다. 분석결과 총 29개 정보통신업들의 CCR-I, BCC-I 효율성과 규모수익성(RTS)을 평가하였다. 또한 분석된 자료를 바탕으로 벤치마킹의 대상이 될 수 있는 정보통신업을 제시하였다. 분석결과 CCR-I효율성이 1인 업체는 7개 기업, BCC-I효율성이 1인 업체는 12개 기업으로 분석되었다. 규모수익성은 IRS가 8개의 기업, DRS가 10개 기업, CRS가 11개 기업으로 분석되었다.

• 한국정보통신학회논문지
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• 제22권4호
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• pp.648-655
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• 2018

정부는 SW 중심사회 실현을 위해 SW 산업에 대한 정책역량을 집중해 왔으며, 이를 통해 SW 산업은 지속적인 발전을 거듭하고 다양한 산업들과의 융합을 통해 고부가가치 산업으로서 그 중요성과 시장이 폭발적으로 확대되고 있다. 그러나 소프트웨어 산업에 치중된 급격한 지원 정책들로 인해 사업자 선정 혼란에 따른 시공품질 저하, 업역(시장)분쟁 등 다양한 문제와 부작용이 발생하고 있다. 따라서 본 논문에서는 급속한 시장 변화에 따른 소프트웨어 지원 정책 및 관련 법령들에 대한 문제점과 관련 원인을 파악하고 그에 따른 개선안을 제안함으로써, 복합적 ICT 산업의업역 명확화(소프트웨어 및 정보통신공사업)를 통해 사업자 선정 혼란에 따른 문제점들을 최소화하고자 한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권1호
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• pp.114-130
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• 2021

With the drastic growth of Information and Communication Technology (ICT) industry, global energy consumption is exponentially increased by mobile communications. The huge energy consumption and increased environmental awareness have triggered great interests on the research of dynamic distribution of cell user and traffic, and then designing the energy efficient cellular network. In this paper, we explore the temporal and spatial characteristics of human mobility and traffic distribution using real data set. The analysis results of cell traffic illustrate the tidal effect in temporal and spatial dimensions and obvious periodic characteristics which can be used to design Base Station (BS) dynamic with sleeping or shut-down strategy. At the same time, we designed a new Cell Zooming and BS cooperation mode. Through simulation experiments, we found that running in this mode can save about 35% of energy consumption and guarantee the required quality of service.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제10권11호
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• pp.5654-5673
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• 2016

Participatory sensing applications rely on recruiting appropriate participants to share their surrounding conditions with others, and have been widely used in many areas like environmental monitoring, health care, and traffic congestion monitoring, etc. In such applications, how to ensure the privacy of a participant is important, since incentive mechanisms are used to maintain their enthusiasm for sustainable participation by offering certain amount of reward. In this paper, we propose a pseudonym-based privacy protection scheme, that takes both privacy protection and user incentives into consideration. The proposed scheme uses the pseudonym mechanism and one-way hash function to achieve user incentives, while protecting their identity. We also show extensive analysis of the proposed scheme to demonstrate that it can meet the security and performance the requirement of a participatory sensing application.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권2호
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• pp.786-799
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• 2021

Road damage detection is important for road maintenance. With the development of deep learning, more and more road damage detection methods have been proposed, such as Fast R-CNN, Faster R-CNN, Mask R-CNN and RetinaNet. However, because shallow and deep layers cannot be extracted at the same time, the existing methods do not perform well in detecting objects with fewer samples. In addition, these methods cannot obtain a highly accurate detecting bounding box. This paper presents a Multi-level Feature Pyramids method based on M2det. Because the feature layer has multi-scale and multi-level architecture, the feature layer containing more information and obvious features can be extracted. Moreover, an attention mechanism is used to improve the accuracy of local boundary boxes in the dataset. Experimental results show that the proposed method is better than the current state-of-the-art methods.

• 한국인쇄학회지
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• 제20권1호
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• pp.1-15
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• 2002

The objective of this study was carried out to investigate the study of printing presses and material industry for foreign countries market development(The point of Russia market) by examine the status of printing industry in domestic and russian. The results obtained from this study were the development and insurance of technical in printing industry market seemed to have secure a technical area in 21th century owing to have a exercise influence over about itself and material industry area.

• 한국인쇄학회지
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• 제20권2호
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• pp.45-56
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• 2002

In these day, our life has been developed with the computer. Printing Industry was introduced the information industry as computer, internet, etc. These are now in daily use and covers the entire work flow - from the planing of the product and the production at domestic printing industry. Then, I suggest the correspondence of changing printing work flow, understanding of digital printing technique, rearing of a special line of business, adjustment in the environment changing of printing technique etc. for the purpose of development of domestic printing industry.

• 한국IT서비스학회지
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• 제12권3호
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• pp.55-71
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• 2013

Mobile communication industry is attracting a lot of attention all over the world and is expected to continue developing endlessly with the current rapid development of IT industry. Nowadays, mobile communication companies of vietnam are competing about service quality in order to retain existing customers and improve customer satisfaction and customer loyalty. This study attempts to research about the effect of mobile communication service quality on customer satisfaction and affecting relationship between customers satisfaction and customer loyalty. In this research empirically examine how mobile communication service quality influence customer loyalty in Vietnam. To do this, after considering characteristics of mobile communication service quality, quality measurement instrument was designed including call quality, call charge, cellphone, added service quality, corporate image, employee's attitude, and behavior. The study finds that all factors of call quality, added servces quality, corporate image, employee's attitude and behavior have positive effect on customer satisfaction except call charge and customers satisfaction also effects customers loyalty positively. From these results, Vietnam domestic mobile communication companies and foreign companies can grasp the general information about Vietnam mobile communication industry, and then, establish customers satisfaction strategies more effectively.

• 산경연구논집
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• 제12권5호
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• pp.27-36
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• 2021

Purpose: This study empirically investigates the effect of collaborative communication and information sharing on the supply chain performance of South Korean pharmaceutical companies. Specifically, it understands the importance collaborative communication and suggests a method for investigating communication in academic research on the pharmaceutical industry. Investigating this sector is crucial because the importance of the pharmaceutical industry is increasing globally against the background of the Covid-19 pandemic. Research design, data, and methodology: A questionnaire was administered to employees of South Korean pharmaceutical companies and 244 valid responses were used for the statistical analysis. Additionally, structural equation modeling was used to measure the relationships between the observed and latent variables. Results: Collaborative communication has a positive effect on information sharing. However, information sharing, unlike collaborative communication, does not exhibit a significant positive relationship with supply chain performance. These results indicate that it is important to communicate effectively in the supply chain rather than strive for the right type of information sharing. Conclusions: Consumers and retailers within the supply chain should continue to strive for candid communication. This study is meaningful, as it empirically tests the relationships between collaborative communication, information sharing, and supply chain performance in the South Korean pharmaceutical industry.