• Journal of Digital Convergence
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• v.12 no.11
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• pp.183-195
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• 2014

This study aims at identifying and prioritizing the application areas for business development of IoT(Internet of Things). In specific, we collected the opinions of the experts on IoT in Korea through the survey based on pairwise comparison, and then we analyzed them using AHP(analytic hierarchy process). As a result, we found that 'Public Safety & Security', 'Automotive & Transportation', and 'Utility & Energy' are the most promising area in realizing IoT-related businesses. Also, we found that the experts had different views according to the positions of their industry in IoT value chain. The analysis showed that the device industry prioritizes 'Public Safety & Security', whereas the network industry does 'Automotive & Transportation'. The experts from the service industry were found to regard 'Utility and Energy' as the most promising commercialization area of IoT.

• Journal of Digital Convergence
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• v.15 no.1
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• pp.373-380
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• 2017

We propose the SoMA(System of Making Avatars) based on a commercial 3D game engine. It first decomposes a given character into assemblable pieces, then gives the user them as prefab components so that he or she can reassemble and/or customize them to be plenty of characters. To accomplish this, it implements the character assembly structure as an hierarchy, the upper levels of which are categorized for gross assembly, and the lower levels of which are parameterized for detailed customization. It also defines a hierarchical naming convention for ease of access to the structure. Finally, it provides body, clothes, and attachment systems to make relevant characters.

• Journal of Digital Contents Society
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• v.17 no.5
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• pp.391-400
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• 2016

The purpose of this study is to reassert the important role of sound design in creating narrative space in films. The main focus is on re-interpreting Chion's sound space composition as a narrative structure. The sound design process has been analyzed to find that the physical properties of sound are purposely manipulated to create the layers of sound to be perceived by the audience in the same way as human perception and cognition of the actual reality work, eventually to create the cinematic reality. The hierarchy of the layers is determined by the importance of the narrative information contained in each sound, with the higher layers being appropriate to convey the information of the narrative, and the lower layers being efficient to deliver the emotion to the audience. With this idea, each of the Chion's space composition is explained as a distinctive area in telling a story with the separate narrative role from the others.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.41 no.3
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• pp.17-25
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• 2004

Internet Service Subscribers Network has a new role of providing various multimedia services to the home. However, there exist several types of distributed subscriber networks using Asymmetric Digital Subscriber Line (ADSL), Very high-bit rate Digital Subscriber Line (VDSL), and Data Over Cable Service Interface Specifications (DOCSIS). The efficient and concentrated network management of those several distributed subscribers networks with resources requires the general network information model, which has and conceptional managed objects independent of type of network and its equipment to manage the integrated subscriber network. This paper presents the general Internet subscribers network model of the managed object to manage that network in the form of integrated hierarchy. This paper adopts the object-oriented development methodology with UML and designs and implements the integrated subscribers NMS of cable data network and VDSL network as examples of the subscriber networks.

• Journal of Digital Convergence
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• v.8 no.2
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• pp.203-216
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• 2010

This study corresponds to an exploratory survey that identifies and organizes important decision factors for establishing R&D strategic portfolio in the application of digitalized Korean human-dataset. In the case of countries that have performed the above, the digitalized human-dataset and its visualization application development research are regarded as strategic R&D projects selected and supervised in national level. To achieve the goal of this study, we organize a professional group that reviews articles, suggests research topics, considers alternatives and answers questionnaires. With this study, we draw and refine the detailed factors; these are reflected during a strategic planning phase that includes R&D vision setting, SWOT analysis and strategy development, research area and project selection. In addition to this contribution for supporting the strategic planning, the study also shows the detailed research area's definition/scope and their priorities in terms of importance and urgency. This addition will act as a guideline for investigating further research and as a framework for assessing the current status of research investment.

• Journal of Digital Convergence
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• v.13 no.1
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• pp.85-92
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• 2015

Recently more and more shortened of corporation's sustainable longevity at the enterprise, and enterprise environment is also changing drastically. In this study, we wanted to obtain a solution that enable to continue the company's corporate longevity through critical factor analysis of the Japan Shinise. In the analysis results of Japan corporation as Doraya, Deicoko, Shinise longevity, we can explain about critical factors like that credit, tradition, customization, products development, changes of management methods and finding a global new markets. Also, In this study, analyzed a significance of critical factors for focusing on each cases and theories using Analytic Hierarchy Process(AHP), and did prediction and analysis about critical longevity factors. However, it need to collect sufficient data and a lots of variables for input. because the sample may be it insufficient. Results of the study, will be expected to be a useful guide for analysis of longevity factors at the company in the future.

• Journal of Digital Convergence
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• v.13 no.1
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• pp.67-76
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• 2015

The Objective of this study was to establish the role of ICT based Welfare services to support the needs of the elderly living alone. For this, 85 current services for the elderly from 6 central governments was arranged, and also, 114 possible welfare services based on ICT in future were surveyed from the research articles. These services were categorized by Maslow's hierarchy of needs, and rearranged into online, offline and combined services. It was observed that most of the services were focused on Safety needs(medical health) and Self-actualization(leisure culture), and services for Esteem were lack. It would be possible to improve the services for the environmental improvement, employment expansion, independent Activities of daily living with the ICT based elderly welfare services. And also, it was needed to develop the additional services for the psychological and emotional support. It was concluded that ICT based consumer oriented services could improve the quality of life of the elderly living alone with the well balanced strategies.

• Journal of Digital Convergence
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• v.14 no.7
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• pp.21-27
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• 2016

Big Data is gathering all the attention from every business community. Pervasive use of machine-to-machine (M2M) applications and mobile devices bring an explosion of data. By analyzing this data, the private and public sectors can benefit in the areas of cost reduction and productivity. The Korean government is actively pursuing Big Data initiatives to promote its usage. This paper aims to select industries which fit for the development of Big Data with a verification of the experts. The analytic hierarchy process (AHP) is applied to systematically derive the opinion of more than 50 professionals. Medical / welfare, transportation / warehousing, information and communications / information security, energy, the financial sector have been identified as promising industries. The results can be utilized in developing Big Data best practices thus contributing industrial development.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.5
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• pp.1095-1101
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• 2012

This paper presents a design of a BLDC servo motor control system for the auto process of assembly and supply using DSP(Digital Signal Processor) controller and IGBT driver. The assembly and supply auto processing system needs torque, speed, position control of servo motor for variable action. This paper implements those servo control with vector control and space vector PWM(Pulse Width Modulation) technique. As CPU of controller, TMS320F240 DSP was adopted because it has PWM waveform generator, A/D converter, SPI(Serial Peripheral Interface) port and many input/output port etc. This control system consists of 3-level hierarchy structure that main host PC manages three sub DSP system which transfer downward command and are monitoring the states of end servo controllers. Each sub DSP system operates eight BLDC servo controllers which control BLDC motor using DSP and IPM. Between host system and sub DSP communicate with RS-422, between main processor and controller communicate with SPI port.

• Journal of Digital Convergence
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• v.19 no.9
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• pp.75-81
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• 2021

The purpose of this research is to derive and evaluate priorities for critical factors that must be determined before an enterprise adopts a cloud computing service. AHP analysis techniques were used to reflect decisions made by experts as research methods. AHP is a decision-making technique that expresses complex decision-making problems hierarchically and derives the best alternatives through pairwise comparison between the items of the hierarchy. Compared to the existing statistical decision making techniques, the decision making process is systematic and simple, making it easy to understand. In addition, the procedure is also reasonable by providing an indicator to determine the consistency of the decision maker in the analysis process. The analysis results of this research showed that security was the first priority, reliability was the second priority, and economic efficiency was the third priority. Among the factors in the first-priority security items, the access control rights and the safety factors of external threats are the most important factors. Research results can be used as a guideline in future practice, and it is necessary to evaluate, compare and analyze the satisfaction of companies that have adopted cloud computing services in the future.