• Journal of Digital Convergence
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• v.17 no.10
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• pp.251-258
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• 2019

In the future, various products are created in various fields using artificial intelligence. In this age, it is a very important problem to know the operation principle of artificial intelligence learning method and to use it correctly. This paper introduces artificial intelligence learning methods that have been known so far. Learning of artificial intelligence is based on the fixed point iteration method of mathematics. The GD(Gradient Descent) method, which adjusts the convergence speed based on the fixed point iteration method, the Momentum method to summate the amount of gradient, and finally, the Adam method that mixed these methods. This paper describes the advantages and disadvantages of each method. In particularly, the Adam method having adaptivity controls learning ability of machine learning. And we analyze how these methods affect digital signals. The changes in the learning process of digital signals are the basis of accurate application and accurate judgment in the future work and research using artificial intelligence.

• Design Convergence Study
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• v.15 no.2
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• pp.237-250
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• 2016

Along with rapid development, progress of the network technology and digital information technology, human are stepping into the intelligent society of internet. Thereby the quality of living environment and working environment are keep improving. Under the big background of internet era, the timeliness and convenience of smart home system has been improved greatly. While lots of smart products have gradually penetrated into people's daily life. The household appliances are among most popular ones. This paper is intended to compare smart features of household living products among most representative brands in China, Japan and South Korea. The smart features include self-learning, self-adapting, self-coordinating, self-diagnosing, self-inferring, self-organizing, and self adjusting. As result, most smart features of these products showed great similarity. While some features were dominated according to countries such as remote control feature in Korea, energy saving feature in Japan, and one button operation feature in China.

• Journal of Digital Convergence
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• v.18 no.4
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• pp.113-119
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• 2020

This study analyzed the relationship between consumers' awareness of marine products and the food index level, which is a sub-domain of the Pukyong Maritime Index. Specifically, the evaluation of marine products by Korean consumers verified the relationship between taste, nutrition, diversity, price, and safety-related systems and the food index. The analysis results were as follows. First, it was found that consumers' awareness of marine products had a significant positive correlation with the food index. Second, as a result of the regression analysis, the food index had an effect on the order of nutrition, taste, and price. These findings are required to understand consumers' awareness of aquatic products, and the food index can be used as the center of northeast asia sea region to provide a framework for improving consumer's satisfaction.

• Journal of Digital Convergence
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• v.13 no.6
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• pp.267-273
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• 2015

Recently, a wide range of products incorporating cutting-edge technology are being introduced in various sectors of design. Belkin's WeMo or Phillips' Hue are representative examples. In this context, the color-responsive lighting bookcase is a design product that would satisfy the needs of contemporary consumers who seek entertainment in their purchases. By installing lightings that change color according to the user's behavior, this design reconceptualizes the bookcase as a source of entertainment rather than a mundane object of household furnishing. The lighting apparatus can be detached and reattached, serving as stand-alone equipment. The lighting bookcase is modularized, comprising extensions equipped with MCU (Micro Controller Unit), RGB LED and color sensors. The bookcase as a whole is extendable towards four directions up to nine units with the lighting bookcase at the center. The extended, multiple lighting bookcases are wired to receive power from the main bookcase, and are equipped with RGB LEDs but not with MCUs or color sensors. Receiving power and color signals from the main lighting bookcase, the sub-bookcases feature changing shades of color. Also, it includes IoT(internet of Things). This study is a proposal of a design product, modularized to control the shades of the bookcase lighting using these sensors.

• Journal of Digital Convergence
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• v.11 no.3
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• pp.407-413
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• 2013

For Ubiquitous service, there are some method researched. To IT convergence study tourism the convergence of IT and tourism in recent years has emerged as a discipline in the future. Tourist information is information about tourism products as tourists tourism decision-making needed to say. Information presented information anytime, anywhere, using a contact-type media, mobile and efficient tourist information content and generate content using Smart App store to the database is needed. This paper, by taking advantage of the Smart App Places to generate content and Smart Things to query, modify, search, tourism information, tourism policy and tourists can be analyzed, and the average inclination and these efficient tourism information content and that can be utilizedmodels are proposed. This u-Smart is a tourist information system. Build the biggest advantages of the meta-meta-model in real time by utilizing Smart App disposition of existing tourism information and tourist and tourism rating database. Helps to generate patterned by digital tourism policy tourism information content.

• Journal of Digital Convergence
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• v.10 no.10
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• pp.457-463
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• 2012

Social network game (SNG) literally is a game based on the relationship between social network or Relationships with people is an important element in the game you need to make full use of them is that you can smooth progress. The form of a social network game activities in the social network game applications by linking corporate products and can be induced to purchase marketing and advertising through in-game social network game on the company's Web site or by connecting the mall and shop are also available. In this study, SNG business models, Case For game development, social commerce based on the new proposed future revenue model linking scheme is proposed.

• Journal of Digital Convergence
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• v.10 no.1
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• pp.435-443
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• 2012

Online game has been made of total products which user was given the experimental properties of a variety such as fun and the total of hardware and software products. Through this processes, The company earned a profitable benefits, in addition to the user was given satisfactory service. In this sense the parts of the game production process, the service earlier in the game testing a variety of ways needs to the user through the game as a condition for providing the content can be. Contact a professional game testing job is done systematically through the game's completion of a game developed by companies to see that service to complement previous significant. In this study, search for independent testing cases and the systematical cases as experts needs a range of the testing services.

• Journal of Digital Convergence
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• v.11 no.9
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• pp.45-54
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• 2013

Currently, the domestic nursing information system software products are being developed competitively with the participation of many companies, generating quantitative development with high value added. However, it is true that the study that concurrently adds qualitative enhancements to such quantitative development has been inadequate. In order to secure international competitiveness in the field of nursing information system software, it is necessary to establish quality requirements on this system, and along with it, establish an evaluation system on the nursing information system software products. The purpose of this study is to analyze the accompaniment and technology of the nursing information system, and by identifying the requirements, establish test and evaluation system of the said system.

• Journal of the Korean Society of Industry Convergence
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• v.8 no.2
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• pp.69-76
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• 2005

This study for Customer Satisfaction(Customer Focus) by Profit security' in the field Process improvement activity and man-power upgrade by DAS(DATA Acquisition System) in the Plant that is fusion Off Line and On Line(IT), Especially the basic of the most foundation in the beginning Step of Toyota system is 3-jeong(a standard instrument; right volume, right box, right position), 5S(Seiri, Seiton, Seisoh, Seiketsu, Sitsuke ; KAISEN, KANBNA System(for Logistic), Further more KPC has established the digital environment such as CIM ; Computer Integrated Manufacturing), IMS ; Intelligent Manufacturing System ERP ; Enterprise Resource Planning, DAS; Data Acquisition System, Autonomous QC & SPC etc,.) in order to realize the intelligent informatization, which is core base for obtaining the competitive power and for responding to the various 21C management environment in flexibility. In this digital management environment, continuously and powerfully they would advance for becoming the best of the world. For strategic changes to take place in industry 3 key important factors need to be included ; Integration of tasks function and process, Decentralization of information, Responsibility, Finally simplification of products and product structures.

• Journal of Digital Convergence
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• v.14 no.5
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• pp.385-390
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• 2016

Cultural industry consists of a national own value and life style known as the cultural characteristics, and it has decorative and practical features so it covers necessaries and items of personal preference that the public use. Craft Culture Industry means the craft industry where goods with cultural features of traditional art are made based on specific region and surroundings, which is a series of process in which inherent traditional and cultural elements are produced, representing cultural industry. With the review on issues and solutions in each section of Craft Culture Industry, it would help solve the problem when developing Craft Culture Industry. This study examines the popularity and status of the craft cultural products and figures out the current situation of the domestic cultural industry and the development plan.