• The Journal of the Korea Contents Association
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• v.9 no.2
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• pp.326-338
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• 2009

In this paper, we argue that characteristics of ubiquitous business are different from those of e-business or m-business. We have developed a u-business model development framework incorporating the concept of value co-creation experiences, which is a core of the ubiquitous business paradigm. The framework of u-business model development presented in this paper consists of eight steps such as defining of domain, discovery of opportunity nucleus, defining of potential co-creation experience environment, deriving candidates of u-business services, selecting u-business killer services, defining value propositions of u-business killer services, defining u-business killer service offerings, and drawing a resource map of u-business killer services. The proposed u-business model development framework offers useful guidelines for practitioners to develop successful u-business models under a ubiquitous business paradigm.

• Journal of Computing Science and Engineering
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• v.5 no.4
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• pp.305-313
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• 2011

Due to the expansion of high-speed Internet access, the need for secure and reliable networks has become more critical. The sophistication of network attacks, as well as their severity, has also increased recently. As such, more and more organizations are becoming vulnerable to attack. The aim of this research is to classify network attacks using neural networks (NN), which leads to a higher detection rate and a lower false alarm rate in a shorter time. This paper focuses on two classification types: a single class (normal, or attack), and a multi class (normal, DoS, PRB, R2L, U2R), where the category of attack is also detected by the NN. Extensive analysis is conducted in order to assess the translation of symbolic data, partitioning of the training data and the complexity of the architecture. This paper investigates two engines; the first engine is the back-propagation neural network intrusion detection system (BPNNIDS) and the second engine is the radial basis function neural network intrusion detection system (BPNNIDS). The two engines proposed in this paper are tested against traditional and other machine learning algorithms using a common dataset: the DARPA 98 KDD99 benchmark dataset from International Knowledge Discovery and Data Mining Tools. BPNNIDS shows a superior response compared to the other techniques reported in literature especially in terms of response time, detection rate and false positive rate.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.05a
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• pp.126-129
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• 2015

Device-to-device (D2D) communications, a subset of Proximity-based Services that enables direct communication between LTE network subscribers, is gaining popularity. It is well underway to be adopted in cellular communication systems for pedestrian and connected-vehicles alike. In this paper, we briefly present our model of an Evolved Packet Core Network-assisted device discovery simulator and show the applicability of Proximity-based Services for Vehicular Ad-hoc Networks. Through the performance evaluation based on the developed simulation environment, it is shown that in case when users gather in the same vicinity, as in public transportation, LTE network data can be efficiently offloaded and multicasted through Wi-Fi for e.g. delivering traffic-related information and for the benefit of infotainment service consumers.

• Journal of the Korean Data and Information Science Society
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• v.20 no.1
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• pp.109-115
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• 2009

Many internet companies are holding marketing activity through customer relationship management to satisfy complicated and diversified consumer demands. Use of customer lifetime value as a marketing metric tends to place greater emphasis on customer service and long-term customer satisfaction, rather than on maximizing short term sales. And so many internet companies have been interested in customer lifetime value, which is a primary key for discovery customer values to promote the competitive power in their business fields. In this paper, we apply a life table technique to lifetime analysis of internet site customers by membership pattern and provide the opportunity using revised life tables in several kinds of internet companies.

• Korean Journal of Plant Taxonomy
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• v.46 no.3
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• pp.283-287
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• 2016

Field work conducted in Natma Taung National Park, Chin State, Myanmar, in 2015 to make a checklist of lycophytes and ferns resulted in the discovery of four fern species not previously recorded in the flora of Myanmar. All occur in other countries in southeastern Asia, and in other tropical areas. The species are as follows: Adiantum monochlamys (Adiantaceae), Ctenitis decurrentipinnata (Dryopteridaceae), Pteris tripartita, and Paragymnopteris vestita (Pteridaceae). These findings will enable us to update the checklist of ferns of Myanmar.

• Science of Emotion and Sensibility
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• v.23 no.1
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• pp.57-68
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• 2020

This research investigates how digital design agencies and client companies incorporate design thinking-a human-centered approach to solving difficult problems-into their website development processes. Based on a literature review on the design-thinking-driven web development process, multiple case studies of award-winning website projects were performed by in-depth interviews with key practitioners. Through analyses of these cases, their user-centered approaches for website innovation were identified according to the following four phases: web planning (discovery and defining phases) and web design and development (development and delivery phases). Moreover, distinct approaches of design thinking practices were identified according to two website types: a brand promotion website with a killer brand storytelling approach; and a service channel website with a strategic UI/UX-driven approach. Next, the key success drivers of these website projects were suggested in light of the typical themes of design thinking (i.e., human centeredness, research based, context awareness, and collaboration). Some practical limitations were also found in adopting the design-thinking-driven web development process, such as limited research methods and tools, and insufficient prototyping and experimentation. Along with these limitations, it was also discovered that current digital design agencies still face the following challenges in adopting the design-thinking-driven web development process: building a long-term, playful partnership with clients; leveraging decision-makers' design thinking awareness; and coping with limited resources (design thinking practitioners, budgets, and schedules).

• Culinary science and hospitality research
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• v.13 no.3
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• pp.148-157
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• 2007

The purpose of this research is to analyze what industry professionals and educators perceive as the definition of "research" and foodservice related-research so that the research become rather systematic and useful research. The research result is as follows. First, the independent t-test analysis of the definitions of research showed that the industry professionals were recognizing it as "investigations that are directed toward the discovery of new scientific knowledge that has specific commercial objectives with respect to products or processes or operation" while the educators were regarding it as "original investigation for the advancement of scientific knowledge that does not have a specific commercial objective." Second, the finding about the application of foodservice related-research to decision-making showed that the industry professionals did not fully utilize foodservice research and did not think it is applicable in the industry. That is because academic journal language is too hard for them to understand and they want to see research findings in industry shows and exhibitions or industry magazines in common understandable language. Lastly, foodservice researchers could initiate the dialog between themselves and industry professionals to diagnose the problems of the industry better and provide practical solutions through research findings.

• The Journal of Pediatrics of Korean Medicine
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• v.34 no.3
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• pp.37-54
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• 2020

Objectives The purpose of this study is to analyze the treatment and treatment's effect for seizures disease in children by reviewing Korean clinical studies. Methods 13 articles which were published from August, 2002 to August, 2016 were obtained from the National discovery for science leader (NDSL), Research information sharing service (RISS), Google Scholar, and Oriental medicine advanced searching integrated system (OASIS) by using keyword 'Seizure', 'Convulsion', and 'Epilepsy'. Results Most of the study cases were with epilepsy children. The most frequently used herbal medicine was Gwakhyangjeonggi-san gami, and the most commonly used acupoints were LI4 and LR3. Treatment periods range from 13 days to 14 months, and all of the seizures were completely cured or relieved after the treatments. Conclusions This study shows that there are common symptoms and treatments for seizures in children. The reported different treatments can be used in primary medical care. Developing guideline standards of the seizure treatments can be possible with further studies.

• The Journal of Pediatrics of Korean Medicine
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• v.34 no.3
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• pp.55-66
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• 2020

Objectives The goal for this study is to find out the recent trends of the Korean medicine treatment on children and adolescents' somatic symptom and related disorder by reviewing case studies. Methods We found case study reports relevant to 'Korean medicine treatment on somatic symptom and related disorder' through Oriental Medicine Advanced Searching Integrated System (OASIS), National Discovery for Science Leader (NDSL) and Research Information Sharing Service (RISS). The age of the patients was limited to under 20. Results All reported articles showed that the treatments were selected based on both emotional problems and physical symptoms. Herbal medicine was the most commonly used method, and the other methods including acupuncture and psychotherapy were also used. Conclusions This study shows that the common Korean medicine treatment can be widely used for children and adolescents' somatic symptom and related disorder. Further research is needed to evaluate the effectiveness of the treatments, and to develop guidelines for the treatment.

• Journal of Korea Society of Digital Industry and Information Management
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• v.8 no.4
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• pp.43-51
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• 2012

Web 3.0 is the next-generation of the World Wide Web and is included two main platforms, semantic technologies and social computing environment. The basic idea of web 3.0 is to define structure data and link them in order to more effective discovery, automation, integration, and reuse across various applications. The semantic technologies represent open standards that can be applied on the top of the web. The social computing environment allows human-machine co-operations and organizing a large number of the social web communities. In the recent years, recommender systems have been combined with ontologies to further improve the recommendation by adding semantics to the context on the web 3.0. In this paper, we study previous researches about recommendation method and propose a recommendation method based on web 3.0. Our method scores documents based on context tags and social network services. Our social scoring model is computed by both a tagging score of a document and a tagging score of a document that was tagged by a user's friends.