• 인터넷정보학회논문지
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• 제24권5호
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• pp.97-106
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• 2023

Citizens' demand for public CCTVs continues to rise, along with an increase in variouscrimes and social problems in cities. In line with the needs of citizens, the Seoul Metropolitan Government began installing CCTV cameras in 2010, and the number of new installations has increased by over 10% each year. As the large surveillance system represents a substantial budget item for the city, decision-making on location selection should be guided by reasonable standards. The purpose of this study is to improve the existing related models(such as public CCTV priority location analysis manuals) to establish the methodology foranalyzing priority regions ofSeoul-type public CCTVs and propose new mid- to long-term installation goals. Additionally, using the improved methodology, we determine the CCTV priority status of 25 autonomous districts across Seoul and calculate the goals. Through its results, this study suggests improvements to existing models by addressing their limitations, such as the sustainability of input data, the conversion of existing general-purpose models to urban models, and the expansion of basic local government-level models to metropolitan government levels. The results can also be applied to other metropolitan areas and are used by the Seoul Metropolitan Government in its CCTV operation policy

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권3호
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• pp.840-860
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• 2023

Aiming at the serious occlusion and slow tracking speed in pedestrian target tracking and recognition in complex scenes, a target tracking method based on improved YOLO v5 combined with Deep SORT is proposed. By merging the attention mechanism ECA-Net with the Neck part of the YOLO v5 network, using the CIoU loss function and the method of CIoU non-maximum value suppression, connecting the Deep SORT model using Shuffle Net V2 as the appearance feature extraction network to achieve lightweight and fast speed tracking and the purpose of improving tracking under occlusion. A large number of experiments show that the improved YOLO v5 increases the average precision by 1.3% compared with other algorithms. The improved tracking model, MOTA reaches 54.3% on the MOT17 pedestrian tracking data, and the tracking accuracy is 3.7% higher than the related algorithms and The model presented in this paper improves the FPS by nearly 5 on the fps indicator.

• 한국산학기술학회논문지
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• 제3권3호
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• pp.189-193
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• 2002

본 논문은 전통산업의 디지털 전략에 대해 토론한다. 인터넷의 발전과 함께 새로운 산업이 등장하고 있으며 동시에 전통산업도 변화하고 있다. 이러한 전통 산업의 변화를 디지털전략이라는 측면에서 설명할 수 있다. 대부분의 전통산업은 인터넷 환경에서 살아남기 위하여 전략적 변화를 시도하고 있는데 이를 네 가지 유형으로 나누어 설명할 수 있다. 디지털전략 유형화를 위하여 두 축을 사용한다. 첫째 축은 디지털전략 방향이며 여기에는 합리화와 신사업추구 두 가지를 들 수 있다. 다른 축은 디지털화 대상이며 제품과 프로세스로 나눌 수 있다. 이런 유형화를 바탕으로 네 가지 디지털 전략을 이름 붙여, 제품혁신전략, 신사업전략, 합리화전략 그리고 프로세스혁신전략이라 부른다.

• Asia pacific journal of information systems
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• 제12권4호
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• pp.173-192
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• 2002

Internet-based on-line firms have focused on the development of new business models with an assumption that this new model would create their competitiveness. At the same time, off-line firms have opened new marketing channels on the internet in order to defend their position against on-line firms. Based on Porter's well-known generic strategy, this study compares between on-line firms and on-offline firms i) whether these two types of firms take different strategies among cost reduction, marketing differentiation, innovation differentiation, and focus and ii) how the performance of these two types of firms is affected by different strategy types. The result shows that on-offline firms prefer the strategy of marketing differentiation and innovative differentiation while the strategy of cost reduction and focus are taken without significant difference between online firms and on-offline firms. Also it is found that even though the strategy of marketing differentiation and innovation differentiation are more preferred by on-offline firms than on-line firms, these two strategy types have a significant influence on the on-line firms' performance while the focus strategy has a significant influence on the on-offline firms' performance. Other managerial implications are discussed.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권3호
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• pp.1136-1151
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• 2018

This paper proposes a new hybrid scheme to decrease the high peak to average power ratio (PAPR) of optical orthogonal frequency division multiplexing (OFDM) signals in visible light communication (VLC) systems. The PAPR causes nonlinear signal distortions and high power requirements for the VLC transmitter (light emitting diode, LED). The proposed method is applicable for both direct current-biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM). In the proposed scheme, the PTS method is firstly modified to fit both optical OFDM approaches transmission and then combined with signal clipping method for further PAPR reduction and bit error rate (BER) improvement of the VLC system. The performance of hybrid scheme has been evaluated and compared with the original OFDM based VLC system, conventional PTS and clipping methods. The results show that the hybrid scheme outperforms other methods in terms of both the PAPR reduction and BER performance.

• International Journal of Internet, Broadcasting and Communication
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• 제14권3호
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• pp.91-100
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• 2022

Major developed countries are seriously considering smart factories to increase their manufacturing competitiveness. Smart factory is a customized factory that incorporates ICT in the entire process from product planning to design, distribution and sales. This can reduce production costs and respond flexibly to the consumer market. The smart factory converts physical signals into digital signals, connects machines, parts, factories, manufacturing processes, people, and supply chain partners in the factory to each other, and uses the collected data to enable the smart factory platform to operate intelligently. Enhancing personalized value is the key. Therefore, it can be said that the success or failure of a smart factory depends on whether big data is secured and utilized. Standardized communication and collaboration are required to smoothly acquire big data inside and outside the factory in the smart factory, and the use of big data can be maximized through big data analysis. This study examines big data analysis and standardization in smart factory. Manufacturing innovation by country, smart factory construction framework, smart factory implementation key elements, big data analysis and visualization, etc. will be reviewed first. Through this, we propose services such as big data infrastructure construction process, big data platform components, big data modeling, big data quality management components, big data standardization, and big data implementation consulting that can be suggested when building big data infrastructure in smart factories. It is expected that this proposal can be a guide for building big data infrastructure for companies that want to introduce a smart factory.

• 한국인터넷방송통신학회논문지
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• 제19권1호
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• pp.239-245
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• 2019

RISC-V는 프로세서의 혁신을 위하여 개방형 표준 협력을 통하여 개발된 무료이며 개방된 명령어집합 아키텍처 프로세서이다. 산업체와 학계의 협동으로 태동한 RISC-V는 프로세서 구조에 새로운 수준의 하드웨어 및 소프트웨어의 자유를 가져다주면서 확장 가능하기 때문에, 향후 50 년의 컴퓨터 설계와 혁신에 견인차 역할을 할 것으로 기대된다. 본 논문에서는 RISC-V가 개발되고 도입됨에 따라, 산술논리, 메모리, 분기, 제어 및 상태레지스터, 환경호출 및 중단점으로 구성된 명령어 아키텍처를 고찰하고 특징을 살펴보았다. 또한 Verilog를 이용하여 설계된 RISC-V 프로세서를 ModelSim으로 모의실행하고 Quartus-II로 합성한 결과, RISC-V의 38 개 명령어를 성공적으로 수행할 수 있었다.

• 산경연구논집
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• 제11권6호
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• pp.29-39
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• 2020

Purpose: The purpose of this study is, in the situation where rapid response to the rapidly changing environment is required due to the development of the fourth industrial revolution such as artificial intelligence, virtual reality, and the internet of things, robotics, big data, additive manufacturing, bio-health, sharing economy and in the organizational culture aspiring toward the innovation of a major company, small business and a public institution, to analyze what influence a job-engagement and stress make, and what influence individual's self-efficacy as a moderator mediator makes, and to offer basic data for improving job-engagement and lowering job-stress. Research design, data, and methodology: For doing this, the literature and the empirical studies were combined. Deriving innovation-oriented organizational culture as factors affecting the job engagement and job stress through the literature, and have established hypotheses to verify them. We have collected data of 281 from ex,ecutives and staff-members working in areas including major company, small business and officials (the central government, a local public service, the prosecution, the police, and school). And these data were analyzed by SPSS 23 version. Results: Based on these data, the results of analysis were as follows; First, the innovation-oriented organizational culture which was recognized by organizational members had effect on job-stress. Second, the innovation-oriented organizational culture which was recognized by organizational members influenced job-stress. Third, in the relationship between the innovation-oriented organizational culture and job-engagement, self-efficacy did not influenced job-engagement. Finally, in the relationship between the innovation-oriented organizational culture and job-stress, self-efficacy influenced job-stress. Conclusions: Innovation-oriented organizational culture places importance on the organization's adaptability and flexibility in the external environment, so companies need to establish an innovation-oriented organizational culture favorable to achieving survival and successful innovation, and to develop and disseminate programs of positive and continuous organizations to improve task enthusiasm, reduce task stress, and enhance organizational performance. In the future, it will be necessary to verify the effectiveness of various organizational culture types through comparative analysis with companies that actively maintain an innovation-oriented organizational culture (Google, Kakao, etc.) and companies that prefer hierarchy-oriented organizational culture, relationship-oriented organizational culture, and market-oriented organizational culture.

• 정보학연구
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• 제5권1호
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• pp.39-50
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• 2002

본 연구는 최근 인터넷쇼핑몰 쇼핑의 폭발적 활용과 성장에 따라 국내 온라인 기업들에게 현재 및 미래의 중요한 시장으로 떠오르는 B2C 거래의 성공적으로 이끌기 위해 필요한 마케팅정보를 제공하고자 하는데 있다. 따라서 인터넷쇼핑몰 B2C 거래자의 I-VALS 군집분류를 탐색적으로 파악하였다. 이는 이러한 결과는 인터넷쇼핑몰에서 구매한 사이버소비자 집단의 구성원의 생활의식과 행동에 어떤 영향을 미치고 그 결과로 라이프스타일과 소비자행동에 어떠한 관계를 갖는가를 파악함으로써 시장세분화에 체계적으로 접근할 수 있는 프레임웍(framework)을 제공해 줄 것이다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2001년도 춘계학술발표대회 논문집
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• pp.128-132
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• 2001

Through the surge of intelligence-based technology, in which information and communication are the main production means, and the ground-breaking innovation of technology, computing, communication, broadcasting have integrated. And this have led to automated, information-based and communication networked society, and the information age. To cope with this movement toward information-based society, offices of interior design are increasingly taking advantage of the Internet and searching for e-commerce business. Many interior design onces have opened up homepages and interior design-related companies are currently in preparation for new advertisement and marketing through the Internet. The purpose of this study is to examine the level of Internet usage by interior design-related websites and information for maintenance of such websites. This study analyzes these websites by their contents and solutions.