• 디지털산업정보학회논문지
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• 제11권2호
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• pp.47-54
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• 2015

The popularity and adoption of smart-phones has greatly stimulated the spread of mobile malware, especially on the popular platforms such as Android. The fluidity of application markets complicate smart-phone security. There is a pressing need to develop effective solutions. Although recent efforts have shed light on particular security issues, there remains little insight into broader security characteristics of smart-phone application. Now, the analytical methods used mainly are the reverse engineering-based analysis and the sandbox-based analysis. Such methods are can be analyzed in detail. but, they take a lot of time and have a one-time payout. In this study, we develop a system to monitor that mobile application permissions at application update. We had to overcome a one-time analysis. This study is a service-based malware analysis, It will be based will be based on the mobile security study.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.616-619
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• 2005

CALNAL team of Korea Aerospace Research Institute(KARI) performed field campaigns for absolute radiometric calibration of 1m satellite image on Daejeon and the cal/val site of Goheung. The satellite image have spatial resolution of 1m in panchromatic spectral band of 450-900nm. The performed cal/val method is the reflectance-based of vicarious calibration methods. We collected ground-based and meteology data such as temperature, surface pressure and reflectance of targets, and radiosonde data used only to test in Goheung. Data collected on each field served as input to radiative transfer codes to generate a top-of-atmosphere(TOA) radiance estimate. Derived TOA is compared with DN of overpass satellite to calculate calibration coefficient of gain and offset.

• 한국IT서비스학회지
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• 제4권1호
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• pp.117-128
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• 2005

When we conduct development of a large-size SI project, it is highly necessary to utilize an appropriate application framework which helps to build a qualified software with high productivity in a short period of time. In this paper, we propose the architecture of a dynamically reconfigurable CBD application integration framework that has been used for developing large-scale e-business applications to achieve high development productivity and maintainability. This Integration framework can easily extend its functionalities, and dynamically change its configuration during run time according to the business category, such as applying interaction patterns among main components in software architecture, rules, policies, and environmental parameters. Dynamic reconfiguration has the feature to make applications be easily customized for changeable requirements. Through our application integration framework, huge sizes of contents can be managed according to the business category as well, by keeping configuration informations and huge volumes of source codes. In order to evaluate out application integration framework in terms of performance criteria, we present experimental results of throughputs from the framework by yielding dynamic configuration without any performance degradation.

• 한국IT서비스학회지
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• 제12권2호
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• pp.269-289
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• 2013

The tremendous advancement of technology sparked a lot of opportunities for developers and consumers to pave way to a dynamic application market in smartphones. This study focuses on the users' perspective, that is, the preference between two application markets that varies in many perspectives of its features. Hence, the purpose of this study is to provide a comparative study on two mobile application stores in smartphones; Google Play and T-Store. A survey was conducted to compare the markets, and the results showed the different influencing factors on choosing and using each application store. In addition, the results somehow revealed the harmony of co-existence in smartphones.

• International Journal of Contents
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• 제13권4호
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• pp.39-46
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• 2017

Due to resource constraints, most of Android application developers need to address potential performance problems during application development and maintenance. The coding styles and patterns of Android programming could often affect the execution time and energy efficiency which are utilized by the Android applications. Thus, it is necessary for application developers to apply performance-enhancing programming practices for mobile application development. This paper introduces performance-enhancing best practices for Android programming, and further, it evaluates the impact of these practices on the CPU time of the application. The original version with the performance-worsening code has been refactored to become an efficient version without changing its functionality. To demonstrate the efficiency of the proposed approach, each coding pattern was evaluated by measuring the CPU time under the controlled runtime environment. Furthermore, the Android applications were evaluated and compared via the CPU time of the original version, with that of the refactored version. These experimental results indicate that, by -using the proposed programming practices, the Android developer can develop performance-efficient mobile applications.

• 한국환경농학회지
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• 제33권4호
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• pp.262-270
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• 2014

본 연구는 바닥재의 농업적 활용성을 증대시키기 위해 바닥재의 안정화 제재로써 축분퇴비를 선발하였고 알타리무의 재배토양에서 바닥재와 축분퇴비의 혼합 시용량에 따른 토양의 화학적 특성, 토양 내 중금속의 함량, 효소활성의 변화 및 알타리무의 수량을 조사하기 위해 실시되었다. 바닥재를 단독으로 시용하였을 때 보다 바닥재와 축분퇴비를 혼합 시용하였을 때 토양의 화학적 특성이 더욱 우수하게 개량되어지는 결과를 나타내었다. 바닥재의 시용량을 증가시킴에 따라 토양 내 수용성 망간과 아연의 함량이 유의적으로 감소하였으며 이러한 효과는 바닥재와 축분퇴비를 혼합 시용하였을 때 더욱 증가하는 것으로 나타났다. 바닥재의 시용량 증가는 알타리무 수확 후 토양 내 urease의 활성을 유의적으로 증가시켰다. 바닥재의 단독시용에 비해 바닥재와 축분퇴비의 혼합시용은 urease, dehydrogenase, acidic phosphotase 및 alkaline phosphotase의 활성을 더욱 증가시키는 것으로 나타났다. 바닥재와 축분퇴비의 혼합시용은 알타리무의 수량 감소를 초래하지 않았으며 통계적으로 유의한 차이는 없었지만 수량의 증수를 보였다. 결론적으로 바닥재는 축분퇴비와 혼합하여 사용된다면 밭토양 내 중금속 함량의 증대와 작물수량의 감소 없이 토양의 화학적 특성과 효소활성을 개량할 수 있는 것으로 조사되었다.

• 접착 및 계면
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• 제7권4호
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• pp.24-27
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• 2006

International standards claim the best possible reliability in industrial manufacturing processes. This is also essential for the application with manual applicators. The application of adhesives with manual applicators is one of the most frequently used application techniques. The range of application reaches from the building of prototypes in the automobile industry over the use in single or small-batch manufacturing up to applications in crafts enterprises. Conventional manual applicators for adhesives and sealants don't fulfill the demands in international standards for the best possible reliability. Only the worker is able to control the quality and the quantity of the bond. A velocity-controlled manual applicator solves these restrictions. Special sensors and micro controllers calculate the flow-rate, the velocity and the location of the manual applicator. This leads to stable and repeatable application processes which are claimed in international standards. The location of the bond can be compared with the nominal value, so that it is possible to check the quality of the bond during application. Furthermore there is the potential to document the data of the manufacturing process.

• Journal of Information Processing Systems
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• 제19권2호
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• pp.219-231
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• 2023

Intelligent applications are crucial for increasing the popularity of shared urban electric bicycles (EBs). Building an application platform architectural system that can satisfy independent user operations is critical for increasing the intelligent usage of shared EBs. Consequently, we collected online reviews of shared EB applications, conducted semantic processing and sentiment analysis, and refined the positive and negative review data for each function. The positive and negative review indices of each function were calculated using the formulae for positive and negative review indices of product functions, thereby determining the functions that need to be improved. Each function of the Shared EB application was improved according to its business process. The main contributions of this study are to build a user requirement architecture system for the Shared EB application with five dimensions and 22 functions using the Delphi method to design the user interface (UI) of this application based on user satisfaction evaluation results; to create a high-fidelity dynamic interaction prototype and compare user satisfaction before and after improving the Shared EB application functions. The testing results indicate that the changes in the UI significantly improve the user experience satisfaction of the urban Shared EB application, with the positive experience index increasing by 69.21% and the negative experience index decreasing by 75.85% overall. This information can be directly used by relevant companies to improve the functions of the Shared EB application.

• Journal of Welding and Joining
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• 제28권2호
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• pp.32-38
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• 2010

In shipbuilding industry, welding position are usually flat and vertical position at the erection stage. Application of SAW and EGW for these positions makes it possible to achieve enhanced productivity and high quality. But owing to their large size and weight it is difficult to apply these techniques in short and narrow regions. To overcome this problem, our company developed light weight and compact size 4-axis welding carriage which perform 3D weaving. The purpose of this study is to explain the development and application of intelligent welding carriage using 3D weaving pattern that can fill a large amount of welds and thereby making it possible to achieve high quality of welding. This study shows 3D weaving pattern, development of weaving database, and skill of adaptive control response for the variable gap. Also, it shows the results of procedure qualification test for the AH-grade steel when applied to the intelligent welding carriage.

• 디지털콘텐츠학회 논문지
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• 제18권1호
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• pp.191-195
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• 2017

본 연구에서는 우리나라의 대표수종 소나무의 치명적인 해충인 소나무재선충 피해목의 확산을 조기에 차단하고 산림수목에 대한 지속적인 관리를 위하여 소나무재선충 피해수목 신고 어플리케이션을 개발하였다. 어플리케이션은 다음과 같이 3개 핵심항목을 중심으로 개발되었다. 첫째, 소나무재선충에 대한 정보제공, 둘째, 피해목의 자가진단, 셋째, 수목안전지도 등으로 구성하였다. 향후 본 어플리케이션의 활성화를 위해서 실제로 어플리케이션을 사용하는 이용자들의 적극적인 참여와 산림청 어플리케이션과의 통합개발이 이뤄진다면 보다 많은 활용이 가능할 것이다.