• Proceedings of the Korean Society of Computer Information Conference
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• 2022.01a
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• pp.61-64
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• 2022

국내 게임 시장 규모가 20조원에 육박할 것으로 전망된 가운데, 내년 게임업계 화두로 메타버스와 NFT가 가장 주요한 이슈가 될 것이다. 메타버스 환경에서의 변화는 편의성, 상호작용 방식, 화면 공간 확장성 측면에서 기존 PC, 모바일 기반의 인터넷 시대와 메타버스 시대는 확실하게 차이가 존재한다. 기존에 비해 혁신적인 변화의 특징들에 대해서 메타버스 환경에서 게임들의 특징들도 무관하지 않을 것으로 생각한다. 본 논문에서는 메타버스 플랫폼에서의 게임개발이 활성화되는 환경에서 메타버스 기반에서 개발되고 플레이 되는 게임들에 대한 품질 보증(Quality Assurance : QA) 혹은 테스트를 위한 방법과 내용에 대해서 기존의 방법들과의 차이점과 향후 메타버스 환경에서의 게임 품질을 측정하는 새로운 요소들에 대해서 제시하고자 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.145-147
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• 2023

요즘은 모든 산업에서 인공지능(Artificial Intelligence : AI) 채택을 빠르게 진행하고 있으며, 디지털 기술과 산업 기술이 융합된 인공지능 분야가 강화되고 여러 서비스 사업 혁신이 이루어지면서 여러 산업의 시장 성장을 견인하는 것으로 나타났다. 특히 게임 산업과 관련한 게임업계에서는 인공지능 관련 전문 지식을 확보하기 위한 투자가 활발하게 이어짐에 따라 발전과 경쟁력 확보를 위한 움직임들이 지속될 것으로 전망된다. 본 논문에서는 게임개발 기술에 인공지능(AI) 기술 접목이 집중되고 있는 상황에서 개발하고 있는 게임에 대한 품질을 보증하고 관리하기 위한 AI 기반의 게임 QA(Quality Assurance) 기술 적용을 위한 방법들에 대해서 제시하고자 한다.

• Imaging Science in Dentistry
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• v.54 no.2
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• pp.129-137
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• 2024

Purpose: Patients with head and neck cancer (HNC) who undergo dental procedures during radiotherapy (RT) face an increased risk of developing osteoradionecrosis (ORN). Accordingly, new tools must be developed to extract critical information regarding the dose delivered to the teeth and mandible. This article proposes a novel approach for visualizing 3-dimensional planned dose distributions on panoramic reconstruction computed tomography (pCT) images. Materials and Methods: Four patients with HNC who underwent volumetric modulated arc therapy were included. One patient experienced ORN and required the extraction of teeth after RT. In the study approach, the dental arch curve (DAC) was defined using an open-source platform. Subsequently, pCT images and dose distributions were generated based on the new coordinate system. All teeth and mandibles were delineated on both the original CT and pCT images. To evaluate the consistency of dose metrics, the Mann-Whitney U test and Student t-test were employed. Results: A total of 61 teeth and 4 mandibles were evaluated. The correlation coefficient between the 2 methods was 0.999, and no statistically significant difference was observed (P>0.05). This method facilitated a straightforward and intuitive understanding of the delivered dose. In 1 patient, ORN corresponded to the region of the root and the gum receiving a high dosage (approximately 70 Gy). Conclusion: The proposed method particularly benefits dentists involved in the management of patients with HNC. It enables the visualization of a 3-dimensional dose distribution in the teeth and mandible on pCT, enhancing the understanding of the dose delivered during RT.

• Journal of Korean Society for Quality Management
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• v.43 no.3
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• pp.327-340
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• 2015

Purpose : Recently, many quality issues are aroused in military forces, such as failures in K-series weapons, combat uniforms' defects and 40mm ammunition explosion accident. To address these problems, Defense Agency for Technology and Quality(DTaQ) introduced new systems such as Manufacturing Readiness Assessment(MRA), Test Report Information System(TRIS) and so on. However, these activities require the human and time resources which cannot be increased in short period. In this paper, we suggest more practical and efficient product examination method. Methods : The most popular and widely used government's quality assurance technique is a sampling method to examine the product. In this research, we first reviewed the DTaQ's quality assurance regulation, then identified several possible problems and finally suggested more efficient and effective sampling plans. Results : We have suggested new sampling framework and evaluated its performance on two military supplies by comparing with other sampling method, and observed that the number of tested samples can be substantially reduced. Therefore, required quality assurance time can be saved. Conclusion : In this paper, we first reviewed the product examination frameworks of DTaQ, PPQMS and DCMA. Then we identified several possible problems which can cause the loss of objectivity and time. To handle these problems, we suggested the new product examination framework and tested the framework to verify the performance.

• Smart Structures and Systems
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• v.15 no.3
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• pp.593-608
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• 2015

In many of the industrialized countries an increasing amount of infrastructure is ageing. This has become specifically critical to bridges which are a major asset with respect to keeping an economy alive. Life of this infrastructure is scattering but often little quantifiable information is known with respect to its damage condition. This article describes how a damage tolerance approach used in aviation today may even be applied to civil infrastructure in the sense that operational life can be applied in the context of modern life cycle management. This can be applied for steel structures as a complete process where much of the damage accumulation behavior is known and may even be adopted to concrete structures in principle, where much of the missing knowledge in damage accumulation has to be substituted by enhanced inspection. This enhanced and continuous inspection can be achieved through robotic systems in a first approach as well as built in sensors in the sense of structural health monitoring (SHM).

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.8 no.6
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• pp.1869-1880
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• 2014

Wireless communication is one of most active areas in modern communication researches, QoS (Quality of Service) assurance is very important for wireless communication systems design, especially for applications such as streaming video etc., which requires strict QoS assurance. The modern wireless networks multi-layer protocol stack structure results in QoS metrics layered and acting in cascade and QoS metrics vertical mapping between protocol layers. Based on virtual buffer between protocol layers and queuing technology, a unified layered QoS mapping framework is proposed in this paper, in which we first propose virtual queue concept, give a novelty united neighboring protocol layers QoS metric mapping framework, and analysis method based on dicerete-time Markov chain, and numerical results show that our proposed framework represents a significant improvement over previous model.

• International Commerce and Information Review
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• v.14 no.2
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• pp.497-521
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• 2012

This paper is to conduct comparative analysis of the impact of overall logistics service quality and its different influence across countries in internet shopping mall context. After reviewing the different approaches given by the literature, SEM analysis was used to testify the hypotheses. A questionnaire based on personal survey was conducted from internet shopping mall users in Korea, China, Japan. This paper collected data from 786 respondents in the countries. Structural equation modeling was also applied to these data to test relationships among the variables in the study. The empirical results of this study are summarized as follows. First, overall logistics service quality of internet shopping mall has a positive direct effect on the consumer assurance as well as consumer satisfaction. Second, consumer assurance and consumer satisfaction have mediated effects between overall logistics service quality and post-purchasing behaviors intention. Third, its effect size of the '$GLSQ{\rightarrow}$ consumer assurance' and the '$GLSQ{\rightarrow}$ consumer satisfaction' links are the same in each country. However, that of the consumer assurance and the consumer satisfaction for the organizational performance are different for each country.

• Journal of The Korean Association of Information Education
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• v.14 no.3
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• pp.427-435
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• 2010

As the e-Learning plays an increasingly larger important part in education and has been increased as an alternative to offline education, academic organizations are moving ahead to set guidelines for quality assurance in e-Learning. And various quality assurance techniques in e-Learning have been developed because the e-Learning does not always match well traditional models of teaching and learning, much care needs to be taken in the design, creation and implementation of service. But the present quality assurances in e-Learning which are focused in learning objects have much problems because they use partial and static management. In this thesis we suggested dynamic quality assurance using CLD(Causal Loop Diagram) in e-Learning. The suggested method has more efficiency than existing methods and it can provide important strategies with regard to administrative issues in e-Learning.

• International Journal of Computer Science & Network Security
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• v.21 no.12
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• pp.45-52
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• 2021

The article proves the relevance of developing conceptual frameworks for managing the quality assurance of logistics activities in the context of socio-economic interaction of their participants. It is established that the fundamental difference of the logistic approach in management from traditional approaches is the allocation of a single management function of previously separated, disparate material flows, as well as economic, technological, information integration of chain links into a single system capable of effective management of these flows. It is substantiated that the functioning of the enterprise as a logistics system can be represented in the form of a triad of logistics components, namely: supply logistics, production logistics, sales logistics. Management of quality assurance processes of logistics activities in the context of socio-economic interaction of their participants is a functional component of the entire logistics system due to the quality of work and interaction of all participants in the implementation of certain activities. The quality of logistics activities will affect the level of economic potential, rationalization and optimization of all logistics flows. It is proved that the management of quality assurance processes of logistics activities in the context of socio-economic interaction of their participants involves the following main areas: the introduction of a quality system of logistics processes; development and implementation of the general strategy of quality improvement at the enterprise; internal integration; controlling. Management of quality assurance processes of logistics activities in the context of socio-economic interaction of its participants requires compliance with the following requirements: systematic and comprehensive management of all flow processes; coordination of criteria and indicators for assessing the effectiveness of the entire logistics system; dissemination of the use and application of information technology; ensuring partnerships and close interaction of all participants in sales networks.

• Journal of Advanced Marine Engineering and Technology
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• v.39 no.10
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• pp.1049-1053
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• 2015

This paper proposes to include engine information in Maritime Service Portfolio (MSP) for effective implementation of e-Navigation. Even though engine information is one of most important element to e-Navigation, MSP consists of mainly about navigation and communication information not included engine information. Furthermore, in reality, engine information sent from ship side such as mainly noon report and Planned Maintenance System (PMS) is too limited to make e-Navigation possibly. Therefore, Remote diagnostic structure receiving and sending data of engine information must be included in MSP for implementation of e-Navigation. Also, it has to be designed, and developed by Software Quality Assurance (SQA).