• 한국소프트웨어감정평가학회 논문지
• /
• 제16권2호
• /
• pp.53-62
• /
• 2020

IoT 환경의 최종 사용자 도메인에서 점점 더 많은 수의 지능형 M2M(Machine-to-Machine Communication) 장치가 애플리케이션 서비스를 생성하고 공유하기 위한 자원을 제공한다. 따라서 기존의 중앙집중식 서비스 제공자의 역할을 P2P 환경의 최종 사용자에게 이전하여 신뢰를 관리하는 것은 매우 유용할 수 있다. 그러나 최종 사용자가 독립적으로 서비스를 제공하거나 소비하는 비중앙집중식 M2M 컴퓨팅 환경에서는 상호간의 신뢰 구축이 가장 중요한 요인이 된다. 오작동하는 서비스를 구축하려는 악의적인 사용자들이 IoT와 같은 M2M 컴퓨팅 환경에서 보안문제를 야기할 수 있기 때문이다. 본 논문에서는 M2M 애플리케이션 서비스의 신뢰 평가를 위한 통합적인 분석과 접근방식을 제공하고, M2M 커뮤니티의 사용자들 사이의 신뢰도를 보장할 수 있는 최적화된 신뢰 평가 모델을 제시한다.

• 인터넷정보학회논문지
• /
• 제25권1호
• /
• pp.167-176
• /
• 2024

챗봇서비스는 AI서비스와 연계하여 다양한 분야에서 활용되고 있다. AI에 대한 보안 연구는 초기 단계이고, 이를 이용한 서비스 구현단계에서의 실질적인 보안 연구는 더욱 부족한 상황이다. 본 논문은 AI서비스와 연계된 챗봇서비스에 대한 보안요구사항을 분석한다. 먼저, 본 논문에서는 최근 발표된 AI보안에 대한 논문과 자료들을 분석한다. 시장에서 서비스가 제공되는 있는 챗봇서비스를 조사하여 일반적인 구현 모델을 정립한다. 구현 모델에는 챗봇관리시스템과 AI엔진이 포함된 5개의 구성요소가 포함되어 있다. 정립된 모델에 기반하여 쳇봇서비스에 특화된 보호자산과 위협을 정리한다. 위협은 실제 운영중인 챗봇서비스 담당자 설문을 통해 챗봇서비스에 특화된 위협을 중심으로 정리한다. 10개의 주요 위협이 도출되었다. 정리된 위협에 대응하기 위해 필요한 보안 영역을 도출하였고, 영역별로 필요한 보안요구사항을 분석하였다. 이는 챗봇서비스 보안 수준을 검토하고 개선하는 과정에서 보안평가 기준으로 활용될 것이다.

• 유통과학연구
• /
• 제13권1호
• /
• pp.57-70
• /
• 2015

Purpose - Open source software has high utilization in most of the server market. The utilization of open source software is a global trend. Particularly, Internet infrastructure and platform software open source software development has increased rapidly. Since 2003, the Korean government has published open source software promotion policies and a supply promotion policy. The dynamism of the open source software market, the lack of relevant expertise, and the market transformation due to reasons such as changes in the relevant technology occur slowly in relation to adoption. Therefore, this study proposes an assessment model of services provided in an open source software service company. In this study, the service level of open source software companies is classified into an enterprise-level assessment area, the service level assessment area, and service area. The assessment model is developed from an on-site driven evaluation index and proposed evaluation framework; the evaluation procedures and evaluation methods are used to achieve the research objective, involving an impartial evaluation model implemented after pilot testing and validation. Research Design, data, and methodology - This study adopted an iteration development model to accommodate various requirements, and presented and validated the assessment model to address the situation of the open source software service company. Phase 1 - Theoretical background and literature review Phase 2 - Research on an evaluation index based on the open source software service company Phase 3 - Index improvement through expert validation Phase 4 - Finalizing an evaluation model reflecting additional requirements Based on the open source software adoption case study and latest technology trends, we developed an open source software service concept definition and classification of public service activities for open source software service companies. We also presented open source software service company service level measures by developing a service level factor analysis assessment. The Behavior-Structure-Evolution Evaluation Model (BSEM) proposed in this study consisted of a rating methodology for calculating the level that can be granted through the assessment and evaluation of an enterprise-level data model. An open source software service company's service comprises the service area and service domain, while the technology acceptance model comprises the service area, technical domain, technical sub-domain, and open source software name. Finally, the evaluation index comprises the evaluation group, category, and items. Results - Utilization of an open source software service level evaluation model For the development of an open source software service level evaluation model, common service providers need to standardize the quality of the service, so that surveys and expert workshops performed in open source software service companies can establish the evaluation criteria according to their qualitative differences. Conclusion - Based on this evaluation model's systematic evaluation process and monitoring, an open source software service adoption company can acquire reliable information for open source software adoption. Inducing the growth of open source software service companies will facilitate the development of the open source software industry.

• 디지털융복합연구
• /
• 제11권1호
• /
• pp.441-446
• /
• 2013

로봇 분야는 새로운 IT의 융합 가능성이 가장 큰 산업으로 주목받고 있으며, 최근 새로운 통신 기술과 클라우드 등이 등장하면서 융합로봇 서비스에 변화가 있을 것으로 전망되고 있다. 본 논문에서는 고령화 사회에서 클라우드 및 로봇산업의 환경, 클라우드 기반 로봇산업 서비스 제공가치와 특징, 시장에서의 고객 니즈 및 가치사슬의 분석을 통하여 클라우드 서비스 기반의 로봇산업 분야의 새로운 비즈니스 모델을 위한 설계 프레임워크를 제안하고, 또한 가치 및 고객만족도 등을 통해 제안된 비즈니스 모델의 평가를 위한 프레임워크를 설계한다. 본 연구는 클라우드 및 로봇 서비스 제공 기업들이 새로운 서비스 모델 개발 및 마케팅 전략 수립에 있어 의미 있는 도움을 줄 것으로 기대한다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제12권1호
• /
• pp.340-367
• /
• 2018

Storage services integration can be done for achieving high availability, improving data access performance and scalability while preventing vendor lock-in. However, multiple services environment management and interoperability have become a critical issue as a result of service architectures and communication interfaces heterogeneity. Storage federation model provides the integration of multiple heterogeneous and self-sufficient storage systems with a single control point and automated decision making about data distribution. In order to integrate diverse heterogeneous storage services into a single storage pool, we are proposing a storage service federation framework named BoxBroker. Moreover, an automated decision model based on a policy-driven data distribution algorithm and a service evaluation method is proposed enabling BoxBroker to make optimal decisions. Finally, a demonstration of our proposal capabilities is presented and discussed.

• Journal of Information Technology Applications and Management
• /
• 제15권1호
• /
• pp.183-202
• /
• 2008

The introduction of a ubiquitous environment has realized commercial ubiquitous services in various industrial fields and government area. The central and/or local governments are demanding an appropriate investment evaluation model for ubiquitous service. Thus, this study develops and suggests an evaluation model for ubiquitous service by reflecting its characteristic of promoting public good, as well as its broad ripple effect on people. The investment evaluation model for ubiquitous service suggested by this study is based on Cost Benefit Analysis Method. Especially, the 'Benefit' is analyzed in two aspects; 'Economic Benefit', which shows the benefit that ubiquitous service providers to the overall local economy, and; 'Financial Benefit', which shows the profit of individual investors participating in the introduction of ubiquitous service. The investment evaluation model for ubiquitous service suggested by this study can be used by the central and/or local government during their evaluation for investment before introducing a ubiquitous service. Also, when introducing a ubiquitous service in public field, the model can be used to support the decision making of private businesses for investment. Finally, it can be used to promote and inform the expected benefits of introducing a ubiquitous service to local residents.

• 한국IT서비스학회지
• /
• 제9권2호
• /
• pp.129-149
• /
• 2010

Although many organizations have implemented and used ERP systems for years, industry reports point out that the usage level does not reach their expectation. As a result, they do not enjoy the benefits from the investment into ERP systems. This study attempts to develop a research model and test the model empirically for identifying factors that affect the usage of an ERP system at a public organization. This study has classified potential factors into three groups of technical system characteristics (usability, usefulness), organizational support characteristics (operational support, education and training, evaluation and measurement), and user characteristics (organizational citizenship, self-efficacy). Then, a structural equation model has been established on the basis of previous literature and tested with empirical data. In summary, this study has found that self-efficacy, usefulness, and operational support have an effect on the ERP usage. Self-efficacy is the strongest factor; Usefulness is the second; and the third is operational support. On the contrary to the previous literature, this study has not found a significant effect of organizational citizenship on the usage. The result confirms that an organization can increase the ERP usage by improving the usefulness of an ERP system to some extent. However, to boost the usage further, the result implies that organizations need to strengthen the self-efficacy of their members by reinforcing operational support, providing education and training steadily, and establishing an evaluation mechanism in relation with the ERP usage.

• Spatial Information Research
• /
• 제19권3호
• /
• pp.23-31
• /
• 2011

최근 u-City와 같은 신도시는 물론 기존 도시에서도 다양한 지능형 도시공간정보 서비스 제공에 대한 관심이 높아가면서, 이들 서비스간 상호운용성 확보를 위한 표준의 보급 및 서비스 적합성 평가가 요구된다. 지능형 도시공간정보 서비스 표준 확산을 목적으로 지능형 도시공간정보 서비스 적합성 평가를 일관성 있게 추진하기 위해서는 지능형 도시공간정보 서비스 적합성 평가모델이 필요하다. 이 평가모델 수립은 기존의 적합성 개념 검토 등 개념정의에서부터 출발하여 국내외 적합성 관련 사례조사 및 분석을 토대로, 지능형 도시공간정보 서비스 및 서비스 표준체계에 입각하여 지능형 도시공간정보 서비스 적합성 평가모델을 제시하였다. 이어 구체적으로 상황인지 상수도 상수유량모니터링에 이를 적용해 봄으로써 지능형 도시공간정보 서비스 확산 및 서비스 적합성 평가모델의 적용방향을 모색하였다.

• 한국정보과학회논문지:소프트웨어및응용
• /
• 제36권1호
• /
• pp.1-9
• /
• 2009

분산된 환경에서 유사한 기능을 제공하는 서비스들의 수가 증가함에 따라, 웹서비스의 신뢰성은 매우 중요한 서비스 선택 요인이 되고 있다. 기업 간 협업과 같은 개방적 비즈니스 모델을 충족시키기 위해, 여러 단위 웹서비스들이 상호 연동하여 상위 수준의 비즈니스 트랜잭션을 형성하는 웹서비스 조합에서 신뢰성의 문제는 더욱 중요해진다. 그러나 단위 웹서비스 각각의 신뢰성이 보장된다고 해도, 조합된 서비스의 신뢰성은 보장되지 않는다. 따라서, 조합된 서비스의 신뢰성에 대한 평가 및 서비스 결정을 위한 방법이 필요하다. 본 논문은 웹서비스의 신뢰성을 평가하기 위한 신뢰도 평가 메트릭스를 정의하고, 이를 통해 조합된 웹 서비스의 신뢰수준을 추측하기 위한 평가 방법을 제안한다. 제안된 신뢰성 평가 모델을 기반으로 웹서비스 조합에서 신뢰할 수 있는 웹서비스 선택을 지원하기 위한 프레임워크를 정의한다. 서비스 사용자의 직관적인 선택이 아니라 정량적인 평가를 통한 선택이 이루어짐으로써, 사용자가 기능적 요구사항뿐만 아니라 품질 요구사항에서도 보다 만족할만한 선택 결과를 얻을 수 있을 것으로 기대한다.

• 보건행정학회지
• /
• 제5권2호
• /
• pp.35-69
• /
• 1995

The managerial environment of hospitals in Korea characterized by low levels of medical insurance fees is worsening by increasing government regulations as to the utilization of medical services, rising costs of labor, material, and medical equipments, growing patient expectations concerning the quality of services, and escalating competitions among large hospitals in the market. Hospitals should seek for their survival strategies in this harsh environment and they should have information about costs of their products in doing so. However, it has not been available due to the complexity of the production process of hospital services. The objectives of this study were to develop a service-based cost accounting model and to apply the developed model to a study hospital to obtain cost information of hospital services. A model commonly used for the job-order product cost accounting in the manufacturing industry was modified for the use in hospitals in Korea. Actual costs, instead of standard costs, incurred to produce a unit of services during a given period of time were estimated in the model. Data required to implement the model included financial information, statistics for the allocation of supportive cost center costs to final cost centers, statistics for the allocation of final cost center costs to services, and the volume of each services charged to patients during a study period. The model was executed using data of a university teaching hospital located in Seoul for the fiscal year 1992. Data for financial information, allocation statistics fo supportive service costs, and the volume of services, most of them in electronic form, were available to the study. Data for allocation statistics of final cost center costs were collected in the study. There were 15 types of evaluation and management service, 2, 923 types of technical service, and 2, 608 types of drug and material service charged to patients in the study hospital during the fiscal year 1992. Labor costs of each of seven types of pesonnel, material costs of 611 types of drugs and materials, and depreciation costs of 212 types of medical equipments, miscellaneous costs, and indirect costs incurred in producing a unit of each services were estimated. Medical insurance fees for basic services such as evaluation and management of inpatients and outpatients, injection, and filling prescriptions, and for operating procedures were found to be set lower than costs. Infrequent services which use expensive medical equipments showed negative revenuse as well. On the other hand, fees for services not covered by the insurance such as CT, MRI and Sonogram, and for laboratory tests were higher than costs. This study has a significance in making it possible for a hospital to obtain cost information for all types of services which produced income based on all types of expenses incurred during a given period of time. This information can assist the management of a hospital in finding an effective cost reduction strategy, an efficient service-mix strategy under a given fee structure, and an optimum strategy for within-hospital resource allocations.