• Title/Summary/Keyword: various applications

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Effect of Various Factors on the Brazed Joint Properties in Al Brazing Technology

  • Sharma, Ashutosh;Lee, Seung Hyun;Ban, Hyung Oh;Shin, Young Sik;Jung, Jae-Pil
    • Journal of Welding and Joining
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    • v.34 no.2
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    • pp.30-35
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    • 2016
  • Last few decades have seen a rapid increase in the fabrication and characterization of Al alloys for automobiles, heat exchangers and aerospace industries. Aluminium alloys are popular because of their high specific strength, light weight, excellent wear and high oxidation resistance. The development of aluminium alloys in these applications makes their study and research of utmost importance. Brazing is applied to the aluminium alloys for joining various aluminium parts together in most of the industrial applications. Various parameters affect the joining process of these aluminium alloys. In this article, various types of processing parameters have been discussed, and special attention has been given to the category of aluminium brazing alloys. The article reviews on the various parameters that affect the brazing property in various scientific and technological applications.

Testing Android Applications Considering Various Contexts Inferred from Permissions (안드로이드 어플리케이션 개발에서 퍼미션 분석을 사용한 다양한 테스트 환경 조건 생성 기법)

  • Song, Kwangsik;Han, Ah-Rim;Jeong, Sehun;Cha, Sungdeok
    • Journal of KIISE
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    • v.42 no.8
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    • pp.1022-1030
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    • 2015
  • The context-awareness of mobile applications yields several issues for testing, since mobile applications should be able to be tested in any environment and under any contextual input. In previous studies of testing for Android applications as an event-driven system, many researchers have focused on using generated test cases considering only Graphical User Interface (GUI) events. However, it is difficult to find failures that could be detected when considering the changes in the context in which applications run. It is even more important to consider various contexts since the mobile applications adapt and use the new features and sensors of mobile devices. In this paper, we provide a method of systematically generating various executing contexts from permissions. By referring to the lists of permissions, the resources used by the applications for running Android applications can be easily inferred. To evaluate the efficiency of our testing method, we applied the method on two open source projects and showed that it contributes to improve the statement code coverage.

Integrated Object Modeling for SMIL, RDF, WIDL Documents (SMIL, RDF, WIDL 문서의 통합 객체 모델링)

  • Kim, Sang-Eun;Ha, Yan;Kim, Yong-Sung
    • Journal of KIISE:Software and Applications
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    • v.28 no.1
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    • pp.14-25
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    • 2001
  • For having various applications, XML is widely used in various fields. But, there have not been proposed a system to integrate and manage XML and its applications together. In this paper, we propose methods to integrate web-based XML applications(SMIL, RDF, WIDL) and for object-oriented modeling of each DTD and document instance. We prppose and system to merge object modeling of XML applications. With the proposed integrating algorithm, we can not only easily analysis various web-based XML applications which is represented by complex tags but also generate object-oriented schema for each document and store it to OODBMS.

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Application Management System with ZeroMQ and Alarms in Distribution Management System (배전운영 시스템에서의 ZeroMQ와 알람 정보를 이용한 운영기능 관리 시스템)

  • Kim, Pil-Seok;Kang, Ho-Young;Lim, Il-Hyung;Park, Jong-Ho;Shin, Yong-Hak
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.64 no.8
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    • pp.1161-1167
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    • 2015
  • Distribution Management System(DMS) ienhancing distribution automation system-based operation efficiency is an optimized system by various operational applications in a distribution network. DMS employs various applications like topology reconfiguration, volt/var control, and restoration at events such as overload, voltage violation, and a fault in a distribution system. An operation efficiency to employ multi-applications as restoration with short-term load forecasting is higher than a performance by a single application; and the applications are accomplished by an operator’s control. Applications’ combination is determined by various alarm information which means critical issues in order to operate a distribution system. Thus, this paper proposes an application management system which can configure application combination, control applications depending on alarm information and check their performance condition. The proposed application management system can be customized by operator easily and have high operation efficiency and reliability because it is worked by reviewed alarm information from operator.

Short Review on Quartz Crystal Microbalance Sensors for Physical, Chemical, and Biological Applications

  • Il Ryu, Jang;Hoe Joon, Kim
    • Journal of Sensor Science and Technology
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    • v.31 no.6
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    • pp.389-396
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    • 2022
  • Quartz crystal microbalance (QCM) based sensors are used for various applications owing to advantages such as excellent accuracy and precision, rapid response, and tiny footprint. Traditional applications of QCM-based sensors include biological sensing and thin-film thickness monitoring. Recently, QCMs have been used as functional material for novel physical and chemical detections, and with improved device design. QCM-based sensors are garnering considerable attention in particulate matter sensing and electric nose application. This review covers the challenges and solutions in physical, chemical, and biological sensing applications. First, various physical sensing applications are introduced. Secondly, the toxic gas and chemical detection studies are outlined, focusing on introducing a coating method for uniform sensing film and sensing materials for a minimal damping effect. Lastly, the biological and medical sensing applications, which use the monomolecularly decorating method for biomolecule recognition and a brief description of the overall measuring system, are also discussed.

Application-aware Design Parameter Exploration of NAND Flash Memory

  • Bang, Kwanhu;Kim, Dong-Gun;Park, Sang-Hoon;Chung, Eui-Young;Lee, Hyuk-Jun
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.13 no.4
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    • pp.291-302
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    • 2013
  • NAND flash memory (NFM) based storage devices, e.g. Solid State Drive (SSD), are rapidly replacing conventional storage devices, e.g. Hard Disk Drive (HDD). As NAND flash memory technology advances, its specification has evolved to support denser cells and larger pages and blocks. However, efforts to fully understand their impacts on design objectives such as performance, power, and cost for various applications are often neglected. Our research shows this recent trend can adversely affect the design objectives depending on the characteristics of applications. Past works mostly focused on improving the specific design objectives of NFM based systems via various architectural solutions when the specification of NFM is given. Several other works attempted to model and characterize NFM but did not access the system-level impacts of individual parameters. To the best of our knowledge, this paper is the first work that considers the specification of NFM as the design parameters of NAND flash storage devices (NFSDs) and analyzes the characteristics of various synthesized and real traces and their interaction with design parameters. Our research shows that optimizing design parameters depends heavily on the characteristics of applications. The main contribution of this research is to understand the effects of low-level specifications of NFM, e.g. cell type, page size, and block size, on system-level metrics such as performance, cost, and power consumption in various applications with different characteristics, e.g. request length, update ratios, read-and-modify ratios. Experimental results show that the optimized page and block size can achieve up to 15 times better performance than the conventional NFM configuration in various applications. The results can be used to optimize the system-level objectives of a system with specific applications, e.g. embedded systems with NFM chips, or predict the future direction of NFM.

APPLICATIONS OF FERRATE(VI) IN THE TREATMENT OF WASTEWATERS

  • Tiwari, Diwakar;Yang, Jae-Kyu;Lee, Seung-Mok
    • Environmental Engineering Research
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    • v.10 no.6
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    • pp.269-282
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    • 2005
  • The novel behavior of ferrate(VI) has received an increased attention for its possible applications in various purposes particularly in the treatment of waste/effluent waters. It possess relatively high oxidizing capacity and the reduced ferrate(VI) into Fe(III) again an important and useful precipitant, coagulant, flocculants and likely to be a good adsorbent via the formation of ferric hydroxide for various metal cations. Moreover, the non-toxic effect makes it a 'green chemical' and further enhances its widespread uses in various purposes. Here an attempt has been made to review the applications of ferrate(VI) in the treatment of waste waters and also its possible future applications in the wastewater treatment technology.

Future 3D display technologies and applications

  • Kim, Eun-Soo
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.133-138
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    • 2008
  • Since the invention of 'the Stereoscope' in 1838, many kinds of 3D display systems have been developed and used for various applications. In fact they have been at least proposed for virtually every application that uses 2D displays. In this paper, we introduce the various 3D display techniques and its products.

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Magnet applications of HTS wires

  • Oh, Sang-Soo
    • 한국초전도학회:학술대회논문집
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    • v.10
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    • pp.27-34
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    • 2000
  • HTS wires processed by PIT method are now available for magnet applications. But, those wires can not be used over 40 K due to weak link. This leads to necessity of development of coated conductor which can retain high $J_c$ at high field in liquid nitrogen. In this paper, various technical issues and the R&D status for both PIT wires and coated conductor were discussed. The difference of coated conductor's processes were also investigated and summarized. Various requirements for a design of HTS magnets were discussed. Anisostropic $J_c$ property with respect to magnetic field was considered to determine the coil's critical current. Low n value is a critical parameter to degrade a field stability with respect to time for a persistent mode HTS magnet. The relation between the margin of operation current and n value was investigated. Prototype HTS magnets with PIT wires are being developed for various applications such as crystal growth, MRI, magnetic separator and etc. HTS magnets will come into wide use in various fields of industries if the HTS wires with a low performance cost is developed.

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The Preliminary Feasibility on Big Data Analytic Application in Construction

  • Ko, Yongho;Han, Seungwoo
    • International conference on construction engineering and project management
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    • 2015.10a
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    • pp.276-279
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    • 2015
  • Along with the increase of the quantity of data in various industries, the construction industry has also developed various systems focusing on collecting data related to the construction performance such as productivity and costs achieved in construction job sites. Numerous researchers worldwide have been focusing on developing efficient methodologies to analyze such data. However, applications of such methodologies have shown serious limitations on practical applications due to lack of data and difficulty in finding appropriate analytic methodologies which were capable of implementing significant insights. With development of information technology, the new trend in analytic methodologies has been introduced and steeply developed with the new name of "big data analysis" in various fields in academia and industry. The new concept of big data can be applied for significant analysis on various formats of construction data such as structured, semi-structured, or non-structured formats. This study investigates preliminary application methods based on data collected from actual construction site. This preliminary investigation in this study expects to assess fundamental feasibility of big data analytic applications in construction.

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