• The Journal of the Convergence on Culture Technology
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• v.9 no.4
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• pp.639-647
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• 2023

A variety of communications are developed and advanced by integration of wireless and wire connections with heterogeneous system. Traditional technologies are mainly focus on information technology based on computer techniques in the field of industry, manufacture and automation fields. As new technologies are developed and enhanced with traditional techniques, a lot of new applications are emerged and merged with existing mechanism and skills. The representative applications are IoT(Internet of Things) services and applications. IoT is breakthrough technologies and one of the innovation industries which are called 4 generation industry revolution. Due to limited resources in IoT such as small memory, low power and computing power, IoT devices are vulnerable and disclosed with security problems. In this paper, we reviewed and analyzed security challenges, threats and requirements under IoT service.

• KIPS Transactions on Computer and Communication Systems
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• v.11 no.11
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• pp.381-394
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• 2022

Recently, due to the personalization and customization of data, Internet-based services have increased requirements for real-time processing, such as real-time AI inference and data analysis, which must be handled immediately according to the user's situation or requirement. Real-time tasks have a set deadline from the start of each task to the return of the results, and the guarantee of the deadline is directly linked to the quality of the services. However, traditional container systems are limited in operating real-time tasks because they do not provide the ability to allocate and manage deadlines for tasks executed in containers. In addition, tasks such as AI inference and data analysis basically utilize graphical processing units (GPU), which typically have performance impacts on each other because performance isolation is not provided between containers. And the resource usage of the node alone cannot determine the deadline guarantee rate of each container or whether to deploy a new real-time container. In this paper, we propose a monitoring technique for tracking and managing the execution status of deadlines and real-time GPU tasks in containers to support real-time processing of GPU tasks running on containers, and a node list management technique for container placement on appropriate nodes to ensure deadlines. Furthermore, we demonstrate from experiments that the proposed technique has a very small impact on the system.

• The Transactions of the Korea Information Processing Society
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• v.7 no.8
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• pp.2463-2472
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• 2000

In this paper, we consider pits and falls of V oIP service scheme over the air link environment. It results that V oIP over packet switching is a more attractive approach in several points. We point out the ffilIior requirements for successful V oIP service over the air. Also, we propose V oIP CP concept for efficient wireless channel utilization. Additionally, we analyze and evaluate the performance. According to the results, It shows that the long cycle VolP vocoder CODEC such as ITU-T G.723 is better than short cycle V oIP vocoder CODEC. In this case, the increase of the simultaneous user of system is almost 60% larger than conventional circuit switching.

• Journal of Service Research and Studies
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• v.13 no.4
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• pp.113-130
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• 2023

This study is a single case study of the application of service design in a regional emergency medical centre of a senior general hospital, focusing on the experiences of patients and medical staff. It aims to measure and improve the experience of healthcare services using service design techniques and to verify their effectiveness. A qualitative case study centred on ethnography and design workshops was conducted to collect in-depth experience data from patients and medical staff. The study identified key experiential differences between patients and healthcare workers, with a particular focus on the challenges faced in emergency medical services. The qualitative data collected through patient and healthcare worker interviews and design thinking workshops were analysed and incorporated into the design in order to understand the complex dynamics of the regional emergency medical centre environment. The results of the study highlighted the need to improve communication, manage patient flow, and improve the environment in three main aspects of the current state of design reflecting the needs of patients and medical staff. By analysing the differences in the specific needs of the two groups of patients and medical staff, a design-led implementation process can be applied to improve the services of the regional emergency medical centre. This study highlights the role and importance of design in healthcare and provides an efficient way to bridge the gap between theoretical research and practical design implementation. This will contribute to creating a faster, more effective, and more satisfying healthcare experience. It is hoped that this will be a new opportunity to see service design as a key to a new innovation process for the satisfaction of both patients and medical staff.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.625-633
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• 2020

this study, an expert AHP questionnaire analysis of public and private groups was conducted to take into consideration the requirements for realistic disaster services. Considered are public areas that manage disasters like fires and earthquakes that can be a major threat to national safety, as well as private areas that mainly develop disaster-related technologies. In the questionnaire, the public respondents valued accurate disaster situation information (ranked 4th and 6th) for citizens (1st), managers (3rd), and related organizations (2nd); the private sector highly valued the importance of three-dimensional (3D) control (ranked 1st, 3rd, and 5th) using future technologies. This study suggests the realization of a disaster-response service that meets the needs of public safety and technological innovation based on a 3D safety state information platform. We anticipate that this study will provide useful data for applying technology and for establishing detailed scenarios during the test bed and commercialization phases. We also expect that further studies will be conducted, such as the practical application and operation of realistic disaster response services, on the financial resources for the proliferation of local governments, and on policy support measures.

• Journal of Korean Society of Archives and Records Management
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• v.18 no.2
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• pp.163-188
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• 2018

How do we create a next generation Records Management System? Under a rapidly changing system development environment, the records management system of public institutions has remained stable for the past 10 years. For this reason, it seems to be the key cause of the structural problem of the Records Management System, which makes it difficult to accommodate user requirements and apply a new recording technology. The purpose of this study is to present a redesigned model for a next-generation records management system by analyzing the status of the electronic records management. This study analyzed "A Study on the Redesign of the Next-Generation Electronic Records Management Process," records management technology of advanced records management system, and a case of an overseas system. Based on the analysis results, the improvement direction of the records management system was analyzed from several aspects: functional, software design, and software distribution. This study thus suggests that the creation of a microservice architecture-based (MSA) and an open source software-oriented (OSS) records management system should be the focus of next-generation record management.

• Journal of the Korea Society of Computer and Information
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• v.14 no.11
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• pp.123-134
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• 2009

As the embedded software for weapon system is embossed, the information management system is required to service and manage the technical information of embedded software systematically. But the technical information documents are managed by its own organization separately, it's hard to service the information and share it with anyone who need. In this paper, to manage the embedded software information systematically, we analyze the information management system built in 2004 and the defence law/rule. Also we distinguish the software information from defence laws to manage systematically and analyze the requirements of the information system. Based on these, we suggest implementing the management system to increase efficiency of managing the weapon embedded software information. Through this, we can improve the utilization and reusability of the weapon embedded software.

• Review of KIISC
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• v.20 no.6
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• pp.28-42
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• 2010

전자 쿠폰(e-쿠폰)의 패턴이 모바일 쿠폰(m-쿠폰)으로 그 주류를 형성해 나가면서 모바일 쿠폰 보안 시스템에 관한 연구와 운영이 필요하게 되였다. 하지만 지금까지 e-쿠폰의 보안 시스템에 관한 연구도 드물 뿐만 아니라 m-쿠폰의 보안에 관한 연구는 극히 드물며, 설령 있다 하더라도 청산(clearing) 단계에 대한 보안 프로토콜은 설계하지 않았었다. 그렇지만 쿠폰의 위조(forgery)나 이중사용(double spending) 뿐만 아니라 도/소매업자 및 청산소(clearing house) 에 의한 청산 단계조작(clearing manipulation)에 의해서도 기업측에 엄청난 손실을 가할 수 있다. 본 논문에서는 청산 단계를 포함한 공식화된 모바일 쿠폰 프로세싱에 대한 보안 프로토콜을 우리나라 현실 상황을 고려하여 설계하고, 보안요구사항을 모바일 쿠폰 서비스/무선 환경/소형 단말기 측면으로 나누어 분석하고, 효율적으로 상태 관리 용이함을 분석하였다.

• Proceedings of the Korea Information Assurance Society Conference
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• 2004.05a
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• pp.35-42
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• 2004

Ubiquitous Computing is gradually accepting in our real society. Already some Advanced State has studying of Ubiquitous for more convenience Ubiquitous environment. Anywhere, Anytime user can be provided information and service that he want, but it has some problem such as Rogue AP, IP spoofing, DoS attack, Warm which can causing social confusion in Ubiquitous society. In this situation we must analytics that security requirement in the Ubiquitous network environment and investigate 'Ad hoc' and RFID which is main technique for network infra construction.struction.

• Journal of the Korea Safety Management & Science
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• v.13 no.4
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• pp.201-205
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• 2011

개인화된 제품과 서비스에 대한 소비자의 요구는 성공적인 전자상거래 플랫폼을 기반으로 하고 있다. 성공적인 전자상거래 플랫폼을 개발함에 있어 자주 간과되고 있는 중요한 요소는 바로 웹 페이지의 HTML 구조이다. HTML 구조는 전자상거래 웹사이트의 속도와 랭킹을 결정짓는 기본적인 요소이다. 본 논문은 HTML 구조를 분석하기 위한 효율적이고 다소 생소한 시각화 기법을 제안하는데, 이러한 기법을 사용하여 개발자는 잠재적인 프로그래밍 오류와 개선 사항을 발견할 수 있다. 본 논문은 하나의 사례를 이용하여 제안된 기법을 더욱 구체화 시킨다.