• 디지털융복합연구
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• 제7권4호
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• pp.81-90
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• 2009

SaaS (Software as a Service) provides software in the form of service via internet rather than software package. Thus a large number of users could use the service of new type of software service as long as they connect to internet. SaaS, as a delivery model attracted in the software industry, grows with impelling force. SaaS has been adopted as an information spreading strategy of small and medium corporate so that its effect has been recognized in both academic and practical areas. However, there are not much researches about it because SaaS is still in the introductory stage. This study focused on the success model of SaaS to find out the factors that affect usability and the satisfaction of users. The sample is based on the on-line survey for the 549 government officials who are using SaaS. At last, the number of the employed answers are 157 after unqualified ones are removed. The result shows that Security, Service quality, Price and System Integration significantly affect the usefulness and the satisfactions of users.

• Journal of Computing Science and Engineering
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• 제4권4호
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• pp.253-275
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• 2010

In this article we review the metaphor of service-oriented architecture for enterprise computing. In typical definitions service-oriented architecture appears as a single message and a consistent roadmap for building flexible software system landscapes. But it is not. Different communities have elaborated different SOA (service-oriented architecture) concepts to address different problem areas, i.e., enterprise application integration, business-to-business, business process management, and software productizing. If software architects and software managers are aware of these strands of SOA when talking about SOA in their projects they can avoid misunderstandings and detours better. This article contributes a clarification of the different strands of SOA concepts and technologies and their mutual dependencies and identifies particular SOA concepts as instances of more general software engineering principles.

• International Journal of Computer Science & Network Security
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• 제23권8호
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• pp.199-203
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• 2023

Influential trend that widely reflected the software engineering industry is service oriented architecture. Vendors are migrating towards cloud environment to benefit their organization. Companies usually offer products and services with a goal to solve problems at customer end. Because customers are more interested in solution of their problem rather than focusing on products or services. In software industry the approach in which customers' problems are solved by providing services is known as software as a service. However, software development life cycle encounters enormous changes when migrating software from product model to service model. Enough research has been done on the overall development process but a limited work has been done on the factors that influence requirements elicitation process. This paper focuses on those changes that influence requirement elicitation process and proposes a systematic methodology for transformation of software from product to service model in a successful manner. The paper then elaborates the benefits that inherently come along with elicitation process in cloud environment. The paper also describes the problems during transformation. The paper concludes that requirement engineering process turn out to be more profitable after transformation of traditional software from product to service model.

• 한국정보과학회논문지:소프트웨어및응용
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• 제37권7호
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• pp.518-535
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• 2010

클라우드 컴퓨팅은 하드웨어와 소프트웨어의 자원을 서비스 제공자 서버에 운영하고, 소비자가 인터넷을 통하여 필요한 서비스를 활용하는 재사용 기반의 컴퓨팅 방식이다. 클라우드 서비스의 한 형태인 SaaS(Software-as-a-Service)는 소프트웨어를 하나의 서비스로 설계 개발한 후, 다양한 소비자들이 재사용하도록 하는 컴퓨팅을 지향한다. 기존의 소프트웨어 어플리케이션은 특정한 하나의 조직을 대상으로 개발하였으나, SaaS는 서비스의 형태로 소프트웨어의 전체 기능을 필요로 하는 다양한 조직에 소속된 다양한 소비자들이 사용할 수 있게 개발된다. 이것은 소비자가 자신이 원하는 기능의 수행을 위해 직접 SaaS를 설정할 수 없게 하여 SaaS 개발에 재사용성이 더욱 강조되게 한다. 하지만 기존의 객체지향 개발 방법론, 컴포넌트 기반 개발 기법, SOA 개발 기법들은 전통적인 소프트웨어 어플리케이션과 다른 SaaS가 가지는 재사용성의 특징을 반영한 설계와 구현을 지원하는 지침과 장치가 거의 없다. 따라서 본 논문에서는 이러한 문제를 해결하기 위해 기존 재사용성의 정의를 확장하여 SaaS의 재사용성을 적용성, 적응성, 확장성의 부 특성으로 구분하고 이를 반영한 재사용성 중심의 개발 프로세스를 제시한다. SaaS 재사용성의 각부 특성은 제시하는 개발 프로세스의 분석과 설계를 위한 각 활동에 직 간접적으로 반영되어 보다 효과적으로 SaaS 재사용성을 향상시킨다. 제시된 프로세스를 적용하면 보다 체계적이고 효과적으로 재사용성 중심의 SaaS 개발을 유도할 수 있다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2011년도 추계학술발표대회
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• pp.181-184
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• 2011

최근 컴퓨터 가상화 기술이 발전됨에 따라 필요한 소프트웨어를 서비스 형태로 사용하는 소프트웨어 서비스(Software as a Service SaaS)가 많은 응용분야에서 사용되고 있다. 그러나 소프트웨어 서비스를 제공하는 기존 시스템은 사용자의 증가에 서버 성능이 급속히 저하되는 문제점과 일시적인 사용자 폭증으로 생기는 핫스팟(Hotspot)에 안정적인 서비스를 제공하지 못하는 문제점을 가지고 있다. 이러한 문제점들을 해결하기 위하여 본 논문은 소프트웨어 실행을 위한 작업들이 모두 서버에서 실행되는 것이 아니라 데이터 집중적인 작업들은 서버에서 직접 실행하고 그래픽 집중적인 작업들은 네트워크 전송을 통하여 클라이언트에서 처리되는 분할 실행 방식과 개별적으로 운영되는 SaaS 서버들을 하나로 통합하는 시스템을 제안한다.

• 유통과학연구
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• 제13권1호
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• pp.57-70
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• 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.

• 한국IT서비스학회지
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• 제8권2호
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• pp.1-22
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• 2009

Recently, improving service quality for customer satisfaction is one of the most important issues and the task for the growth of company. Furthermore, plenty studies are going on progress to develop service quality in IT industry. There have been so many researches of product quality on package software but yet the service quality of package software has been rarely studied before. Thus, the purpose of this study is to formulate a scheme on how to enhance the competitivity of package software company by analyzing the impacts of these two factors on the customer satisfaction, Word-of-Mouth intention and the reuse intention. The study models have been designed and the hypotheses have been made through the examination of the precedent literature about package software product and service quality. A questionnaire survey was performed to collect information, and the unit of analysis was a person who used package software. This study used the statistical technique such as regression analysis. This study may be utilized as basic data for building marketing strategies when package software companies offer service to customers.

• 한국정보과학회논문지:소프트웨어및응용
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• 제35권11호
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• pp.653-660
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• 2008

최근에 제시된 서비스 기반 컴퓨팅 패러다임에서의 서비스 기반 소프트웨어 개발을 지원하기 위한 체계적인 프로세스 모델에 대한 요구가 대두되고 있다. 기존에 제시된 Unified Software Development Process, UML Components 등의 방법론은 컴포넌트에 초점을 두고 만들어진 방법으로, 서비스의 정의, 바인딩, BPEL(Business Process Execution Language)을 이용한 서비스의 조합등과 같은 서비스 기반의 개발이 가지고 있는 특징을 반영하지 못하고 있다. 또한 서비스 기반의 개발 방법론으로 제시된 SOUP(Service Oriented Unified Process), SOMA(Service Oriented Modeling and Architecture) 등은 개념적인 절차가 위주로 되어 있지, 구체적인 가이드라인, 산출물 및 접근 방법을 명확히 제시하지 않는다. 그러므로 본 논문에서는 서비스 기반의 개발 패러다임을 지원하기 위한 체계화되고, 간소화된 프로세스 모델을 제시한다. 또한 OMG에서 제시한 SPEM(Software Process Engineering MetaModel)을 적용하여 프로세스 모델을 명시적으로 표현한다. 본 논문에서 제안된 프로세스 모델을 실제 서비스 기반의 개발에 적용함으로써 서비스 기반 소프트웨어 개발의 체계성 및 효율성을 증대시킬 수 있게 된다.

• International Journal of Internet, Broadcasting and Communication
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• 제14권4호
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• pp.1-10
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• 2022

Since 2019, elementary schools have been teaching software to students, so pre-service teachers should have the ability to teach software. Also, in the COVID-19 situation, pre-service teachers need the ability to teach software online. The purpose of this study is to investigate the effectiveness of online software education for preservice teachers. After providing online software education to preservice teachers, we analyse the results and examines whether online software education is effective. In this study, we define 55 learning elements by analyzing the achievement standards that can evaluate the software education ability of preservice teachers. We figure out whether pre-service teachers have acquired the ability to provide online software education to elementary school students. As a result of the study, we concluded that pre-service teachers who received this online education could conduct software education online in elementary school.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.238-240
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• 2014

클라우드 컴퓨팅은 소프트웨어를 서비스로서 사용할 수 있도록 하는 SaaS 프레임워크를 포함한다. 기존의 서비스가 있음에도 테넌트와 용도의 차이에 따라 서비스 제공자가 서비스를 다시 구축한다면 비용이나 관리적 측면에서 많은 자원을 요구하게 된다. 이에 우리는 기존 소프트웨어를 재사용 할 수 있도록 프로세스 알제브라를 이용하여 분석하는 기법을 제안한다. process algebra는 소프트웨어의 구조를 분석하고, 이를 비즈니스 프로세스나 다른 언어로 표현할 수 있으며, 재사용할 수 있는지 검증할 수 있다. process algebra 중 CCS(Calculus of Communicating Systems)는 비즈니스 프로세스나 XML로 변환하기 유용하므로, 이를 이용하여 프로세스를 구조화하고, 구조화된 명세를 비교 및 관리를 위한 메타 저장소를 제안한다.