• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.980-983
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• 2012

Nowadays, with increasing in difficulty level of elementary, junior high and high school education, we are growing more and more interested in the national history. We intend to develop the mobile App to make the people have the concern and interest in the national cultural assets to introduce the information about them. The game can be learned easily and we are increased the interest in the national cultural assets by game speed. We intent to develop the mobile App to be able to search the information about the national cultural assets at anytime and anywhere. This App uses the Model2 Architecture MVC method.

• The Transactions of the Korea Information Processing Society
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• v.2 no.3
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• pp.324-334
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• 1995

Most UIMS(User Interface Management System) adopt dialogue model of user interface Implementation of UIMS influenced by adopted dialogue model of user interface strongly. While the Model-View-Controller framework has contributed to many aspects of user interface development in Smalltalk environment- user interfaces generated with MVC have highly coupled model, view, and controller classes. Such coupling impedes the reuse of software component. So In this paper, we suggest MVCD model to resolve a decline of reuse with MVC have highly coupled. User messages are not changed by Controller immediately, but sent to Dialogue object which maintains the syntatic structure of the interaction. Dialogue object invokes Model object to updates is value. Since Model objects have active values, the value change propagates to the linked Controllers. Finally, Controller object convert the new value and update the View object. User interface builder is implemented on X-window with OSF/Motif that is base on this user dialogue model.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.585-586
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• 2020

본 논문에서는 동적 웹 어플리케이션의 기능 구현에 사용되는 모듈 구현과 모듈 결합 방식에 따른 효율성은 시스템 운영을 위한 매우 중요한 요인이 된다. 사용자들 간의 인터넷 이용률이 높아지면서 웹 어플리케이션에 다양한 기능들이 추가되어 모듈간의 복잡성이 매우 높은 상태에서 정보를 제공하고 있다. 이러한 복잡성을 줄이기 위해 제시된 방법들을 검증하기 위해 만들어진 웹 어플리케이션을 통해 시뮬레이션의 결과를 제안한다. 소프트웨어 개발에 최소한의 비용으로 최대의 효율성을 내기 위해서는 각 모듈의 여러 가지의 구현 방식과 모듈 간 결합을 테스트한 결과를 MVC 패턴 방식으로 구현된 웹 어플리케이션을 통하여 확인하였다. MVC 패턴의 단점인 모델과 뷰 사이 의존성이 높은 문제를 완화하고, 유지보수성과 결함 허용성을 높이는 모듈 구현 및 통합방식의 연구를 위해 외부 모듈과 내부에서 객체로 구현된 모듈을 사용한 웹 어플리케이션의 결합도에 따른 테스트를 통해 각 모듈의 구현 및 통합 방식에 따른 장단점을 서술한다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.6 no.5
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• pp.1421-1444
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• 2012

Mobile devices such as Android devices are emerging as a convenient client computing device with mobility and context-sensing capability. However, the computing power and hardware resource of the devices are limited due to their small form-factor. Consequently, large-scaled applications could not be deployed on these devices. Nonetheless, if the large-scaled applications are deployed and executed on the devices, high performance of the applications cannot be guaranteed. To remedy the limitation in terms of performance, it is inevitable to let some heavy-weight functionality executed on the server side and let a client application invoke the functionality in the server. To realize this kind of mobile applications, we adopt well-defined architecture design principles; being thin-client, being layered with Model-View-Controller (MVC), and being balanced between client side and server side. By adopting the principles, we propose a unique, ideal and practical architecture for mobile applications, called balanced MVC architecture. By considering the principles, key design considerations of realizing balanced MVC architecture lie in functionality partitioning. Hence, we define key criteria of determining the degree of performance. And, we define a method to design a balanced MVC architecture which embodies functionality partitioning for high performance, and a simulation-based evaluation method of balanced MVC architectures.

• Journal of Korean Institute of Industrial Engineers
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• v.25 no.2
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• pp.266-273
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• 1999

The maximum work capacity at various shoulder angles was estimated in terms of joint moment through maximum voluntary contraction (MVC) measurement, and the result was compared to workload computed from 3-D static lifting model (3DSSPP) based upon national institute of safety and health (NIOSH) lifting guideline (1991). The electromyography (EMG) of anterior/posterior deltoid and trapezius muscle was also recorded to study the function of individual muscle during asymmetric shoulder lifting. Psychophysical workload was measured to observe the difference from MVC or biomechanical estimation. An apparatus was constructed for the study and twenty five trials including five flexion angles and five add/abduction angles were performed isometrically. Results indicated that MVC at 30 degree of flexion was the strongest whereas MVC at 120 degree was the weakest. In case of add/abduction, MVC decreased to 77 to 89 % during add/abduction compared to the MVC at neutral position. Regarding the normalized EMG value, a substantial increase was observed at 30 and 60 degree abduction. More importantly, the shoulder moment computed from maximum permissible limit (MPL) was greater than the moment at MVC condition during 30 degree adduction. Current result can be used as a reference information for a safe workplace design to prevent the shoulder from an excessive work load in industry.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.11
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• pp.2153-2166
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• 2017

Web apps have a problem that they cause same data to be repetitively retrieved, processed, and displayed when web browsers load different web pages. To resolve the problem, this paper presents and evaluates a new method for restructuring of Java web apps. This approach dynamically analyzes Java web apps from the MVC (Model-View-Controller) architecture point of view and identifies redundant data by using the composite view pattern. Then the input apps are restructured in order not to load the redundant data when users make requests for new pages. This restructuring generates new web apps that conform to the MVC architecture and improve the performance of input web apps. The experimental results showed that when compared to legacy web apps, the restructured apps' response time was reduced on desktop PCs and mobile devices by 38% and 55%, respectively. In addition, case studies using open-source web apps showed the applicability of the proposed approach.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06a
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• pp.74-79
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• 2010

모바일 디바이스는 유연한 이동성을 제공하는 대신에 제한된 자원을 가지고 있는 휴대용 장치로서, 어플리케이션 구동을 가능하게 하는 새로운 클라이언트 단말기로 빠른 속도로 보급되고 있다. 대표적인 모바일 디바이스로는 iPhone, 안드로이든 폰이 있다. 현재 이러한 모바일 디바이스에는 엔터테인먼튼 관련 어플리케이션이 널리 사용되고 있지만, 앞으로 모바일 디바이스의 성장 및 네트워크 기술에 따라 다소 복잡한 어플리케이션을 필요로 하게 된다. 그러나, 모바일 디바이스에서 실행될 수 있는 어플리케이션의 복잡도에 제약이 발생하여 놓은 복잡도의 어플리케이션은 실행이 힘들다. GUI 어플리케이션에서 데이터와 그것을 표현하는 부분을 나누어 설계하는 MVC (Model-View-Control) 아키텍쳐는 어플리케이션을 설계하는데 일반적으로 많이 사용되고 있지만, 이는 모바일 어플리케이션의 특징을 반영하지는 못한다. 그러므로, 본 논문에서는 자원 사용의 최적화를 고려한 서비스 기반 모바일 어플리케이션을 설계하기 위하여 기존의 MVC 아키텍처를 보완/확장한다. 본 논문에서 제안하는 MVC 아키텍쳐는 어플리케이션 특성에 맞춰 모바일 어플리케이션의 특성들을 극복하여 모바일 디바이스의 한계점을 극복하는 동시에 고성능을 보장하는 모바일 어플리케이션을 개발하는데 적용할 수 있다.

• Journal of the Korea Convergence Society
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• v.10 no.3
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• pp.395-400
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• 2019

The Web environment of the frontend domain is increasingly competitive to preempt the new standard of presentation layer. N-Screen, a service that enables users to seamlessly use one content in various devices in Korea, is competing for market preemption by recognizing it as a core service of the future. In the cloud computing, N-screen is a typical service type. However, most of the frontend research required for groupware in enterprise environments has been limited to responsive web design for the web and native apps for mobile. Gradually, the need for MVC design patterns is increasingly widening in enterprise environments to overcome the cultural differences of companies and to support one source multi-use strategy supporting multiple devices and development productivity. Therefore, in this study, we will analyze and design JPetStore with hybrid application design based on Spring MVC, e-government standard framework environment of next generation web standard, and provide reference model of frontend hybrid apps design in future enterprise environment.

• ETRI Journal
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• v.32 no.4
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• pp.566-576
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• 2010

In a multiview video system, interactivity is important for users and should be considered in the design of multiview video coding (MVC). In this paper, we present an interactivity evaluation model for MVC schemes by using both weighted random graph and Markov approaches. The main factors that affect both the interactivity and rate-distortion (RD) performances of MVC schemes are analyzed and discussed in detail. By taking these factors into consideration, a new MVC scheme is proposed for high interactivity and RD gains. Experimental results show that the proposed scheme has a significant interactivity gain with little coding loss, compared to the state-of-the-art benchmark. As an extension to RD performance analysis, the interactivity evaluation model can be used as a design tool of alternative schemes for a future interactive multiview video system.

• The Journal of the Korea institute of electronic communication sciences
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• v.7 no.6
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• pp.1567-1572
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• 2012

An IPC(instrument panel Cluster) is a useful device that provides driving information to the driver. The information includes the vehicle speed, RPM, mileage, etc. The traditional IPC has been mostly implemented with mechanical technique. According to increment of needs for the convenience of IPC by user, the IPC must provide graphical interface and efficient driving information. Also the user-friendly IPC is needed by drivers. Thus flexible and robust software structure and development methods are required in order to develop IPC. In this paper, we propose software architecture and design method for the IPC using modeling method. We use MVC model and UML to model software architecture because they have flexible and robust characteristics. We can develop the various forms of information screen by separating views from model by using state diagram and class diagram in UML. Through this, the cost saving and ease of maintenance can be expected. The development time and cost can be reduced by using proposed method.