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Scalable FFT Processor Based on Twice Perfect Shuffle Network for Radar Applications (레이다 응용을 위한 이중 완전 셔플 네트워크 기반 Scalable FFT 프로세서)

  • Kim, Geonho;Heo, Jinmoo;Jung, Yongchul;Jung, Yunho
    • Journal of Advanced Navigation Technology
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    • v.22 no.5
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    • pp.429-435
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    • 2018
  • In radar systems, FFT (fast Fourier transform) operation is necessary to obtain the range and velocity of target, and the design of an FFT processor which operates at high speed is required for real-time implementation. The perfect shuffle network is suitable for high-speed FFT processor. In particular, twice perfect shuffle network based on radix-4 is preferred for very high-speed FFT processor. Moreover, radar systems that requires various velocity resolution should support scalable FFT points. In this paper, we propose a 8~1024-point scalable FFT processor based on twice perfect shuffle network algorithm and present hardware design and implementation results. The proposed FFT processor was designed using hardware description language (HDL) and synthesized to gate-level circuits using $0.65{\mu}m$ CMOS process. It is confirmed that the proposed processor includes logic gates of 3,293K.

Modeling and Simulation of Platform Specific Model in MPSoC Environment (MPSoC용 임베디드 소프트웨어의 PSM 모델링 및 시뮬레이션)

  • Song, In-Gwon;Oh, Gi-Young;Hong, Jang-Eui;Bae, Doo-Hwan
    • Journal of KIISE:Software and Applications
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    • v.34 no.8
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    • pp.697-707
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    • 2007
  • Since embedded software is very dependent for target hardware architecture, characteristics of the platform must be considered when designing the software. Furthermore, MPSoCs consists of heterogeneous hardware components that are specified in micro level. Thus mapping of embedded software for MPSoCs should be considered the characteristics. In this paper, we provide an approach to automatic mapping PIM (Platform Independent Model) of an embedded software to PSM(Platform Specific Model) for MPSoC(Multi Processor System On Chip) and verify its effectiveness with simulation. In the proposed approach, tasks are derived from an object oriented model based on the UML (Unified Modeling Language). And then the types of the derived tasks are identified. With the identified types and inter relationship between tasks, the tasks are assigned to appropriate heterogeneous hardware components. We expect that the approach improve accuracy of the assigning and concurrency of the deployed software.

A Convergence Strategy of Improving Korean Speaking Skills through Memorizing Whole Sentence and Pair Works (통 문장 암기와 짝 활동을 통한 한국어말하기 향상 융합전략)

  • Ryu, Ja-Mi;Oh, Seong-Rok
    • Journal of the Korea Convergence Society
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    • v.7 no.2
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    • pp.77-84
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    • 2016
  • This paper is aimed at finding whether foreign students' Korean speaking skills can be increased or not through memorizing whole Korean sentences and pair works. First, the advance studies on the effects of this teaching method were surveyed. Second, the activity of this study was mainly pair works with foreign students, so how to do this activity was described. This activity was intended to help each other with keeping study and correcting errors while drilling in class. Thanks to this convergence teaching approach the students' frequency of target language, the Korean language was dramatically increased, and their motivation and energy were brought from this activity. They have to do communications with each other because each pair was made of one Chinese and one Vietnamese. They have no choice but to use Korean in communication. Finally, the questionnaire and interviews also showed that almost all of the students were satisfied with this convergence teaching approach.

Localization of Chinese Version of Jeju Tourism Organization's Official Version 'Visit Jeju' - Centered on Contents Selection and Translation (제주관광공사 '비짓제주' 중문 홈페이지의 로컬라이제이션 연구 -콘텐츠 선정과 번역 텍스트를 중심으로)

  • Hong, Weiwei
    • The Journal of the Korea Contents Association
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    • v.19 no.1
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    • pp.535-547
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    • 2019
  • Website localization not only means to transliterate the content and text of the original language web pages, but also adjust it according to the culture and demand of the target language market, so as to improve the acceptance of the local market. From the perspective of localization, this paper analyzes localization strategies and shortcomings of Chinese pages of Jeju official tourist website 'visit Jeju'. First, by comparing the differences between the Chinese web pages and the Korean web pages in the content and text, the localization of the website is summed up, and then the differences are compared with the local tourism website 'Mafeongwo' in China. Not only offering and suggestions for improving the translation quality in the Chinese web pages of 'Visit Jeju'. but also the making some further suggestions for the other Korean websites.

A Specification and Exchange Method for Supporting SLA in SaaS Environment (SaaS 환경에서 SLA 보장을 위한 명세 및 교환 방법)

  • Nam, Taewoo;Kang, Taejun;Jang, Moonsoo;An, Youngmin;Yeom, Keunhyuk
    • Journal of Software Engineering Society
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    • v.26 no.2
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    • pp.45-52
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    • 2013
  • A cloud computing service provider must assure Service Level Agreement (SLA) to provide reliable and consistent quality of service to a user. The SLA is a contract between the user and the service provider that connects to assure constant level such as availability to target provided service. The cloud computing is classified into IaaS, PaaS, and SaaS according to IT resources of the various cloud service. The existing SLA is difficult to reflect quality factors of service because it only considers factors about the physical Network environment. In this paper, we suggest the UDDI-based interchange process with the architecture and the specification language having a XML schema for the SLA specification. The quality requirements of SaaS are defined by a proposed specification language in the cloud environment. It is stored in the repository of a quality specification and exchanged on during the service binding time based on the exchange architecture.

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What's happening to theatricality after the rise of New Historicism?: A Study of Newsbooks and Playlets During the English Civil Wars and Their Significance as Textual and Theatrical Forms (신역사주의적 극장성의 재고(再考) -17세기 중반 뉴스북과 플레이릿 연구를 중심으로)

  • Choi, Jaemin
    • Journal of English Language & Literature
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    • v.58 no.2
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    • pp.279-304
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    • 2012
  • Since the publication of Foucault's Discipline and Punish, theatricality has become one of the key concepts in New Historicism. By defining theatricality as the most definitive feature of early modern society and culture, New Historicists have promoted the idea that theatrical practices in every day life were eventually replaced by textual practices as the western society started to undergo modernization with the advent of print culture and technologies. This paper questions this linear model of English literature, the shift of literary practices from theatricality to textuality in the event of modernization, by closely looking at the ways in which newsbooks and playlets during the English civil wars appealed to their target readers. The early print-based literary commodities during the English civil war (i.e. newsbooks and playlets) were able to win the attention of their audience not by breaking away from theatrical energy and creativity but instead by embracing and taking advantage of them through the use of dramatic conventions, dialogues, and many others. The newsbooks and the playlets during the time, however, did not simply replicate the dramatic forms and experiences of the previous generation. Instead, as the case study of Craftie Cromwell exemplifies, they went further to produce a different mode of theatricality by reshaping everyday lives into serialized drama, whose resolution is always already delayed and postponed into the ever-receding future. In conclusion, the study of the newsbook and playlets during the civil wars suggests that the textuality of modern times, materialized in print forms, have been co-evolved with the development of new theatricality, whose contents and forms are susceptible to the changes of everyday reality.

Inspection of guided missiles applied with parallel processing algorithm (병렬처리 알고리즘 적용 유도탄 점검)

  • Jung, Eui-Jae;Koh, Sang-Hoon;Lee, You-Sang;Kim, Young-Sung
    • Journal of Advanced Navigation Technology
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    • v.25 no.4
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    • pp.293-298
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    • 2021
  • In general, the guided weapon seeker and the guided control device process the target, search, recognition, and capture information to indicate the state of the guided missile, and play a role in controlling the operation and control of the guided weapon. The signals required for guided weapons are gaze change rate, visual signal, and end-stage fuselage orientation signal. In order to process the complex and difficult-to-process missile signals of recent missiles in real time, it is necessary to increase the data processing speed of the missiles. This study showed the processing speed after applying the stop and go and inverse enumeration algorithm among the parallel algorithm methods of PINQ and comparing the processing speed of the signal data required for the guided missile in real time using the guided missile inspection program. Based on the derived data processing results, we propose an effective method for processing missile data when applying a parallel processing algorithm by comparing the processing speed of the multi-core processing method and the single-core processing method, and the CPU core utilization rate.

Design of Initial Decision-Making Support Interface for Crop Facility Cultivation (작물 시설재배 초기 의사결정 지원 인터페이스 설계)

  • Kim, Kuk-Jong;Cho, Yong-Yoon
    • Journal of Internet of Things and Convergence
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    • v.8 no.2
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    • pp.71-78
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    • 2022
  • Recently, the number of people wishing to return to farming is increasing, However, the lack of farming experience and management information of returnees is one of the main reasons for increasing the probability of agricultural failure. This study proposes an interface to support early facility cultivation management decision-making for returnees who want facility cultivation. The proposed interface is designed with UML(Unified Modeling Language) and provides key decision-making information such as land/crop suitability, land/facility costs, and management costs according to input data such as cultivation areas, selected crops, and cultivation types selected by the user. Through the proposed interface, facility cultivators can effectively and quickly acquire initial decision-making information for facility cultivation in the desired target area.

Deep Learning-based Text Summarization Model for Explainable Personalized Movie Recommendation Service (설명 가능한 개인화 영화 추천 서비스를 위한 딥러닝 기반 텍스트 요약 모델)

  • Chen, Biyao;Kang, KyungMo;Kim, JaeKyeong
    • Journal of Information Technology Services
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    • v.21 no.2
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    • pp.109-126
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    • 2022
  • The number and variety of products and services offered by companies have increased dramatically, providing customers with more choices to meet their needs. As a solution to this information overload problem, the provision of tailored services to individuals has become increasingly important, and the personalized recommender systems have been widely studied and used in both academia and industry. Existing recommender systems face important problems in practical applications. The most important problem is that it cannot clearly explain why it recommends these products. In recent years, some researchers have found that the explanation of recommender systems may be very useful. As a result, users are generally increasing conversion rates, satisfaction, and trust in the recommender system if it is explained why those particular items are recommended. Therefore, this study presents a methodology of providing an explanatory function of a recommender system using a review text left by a user. The basic idea is not to use all of the user's reviews, but to provide them in a summarized form using only reviews left by similar users or neighbors involved in recommending the item as an explanation when providing the recommended item to the user. To achieve this research goal, this study aims to provide a product recommendation list using user-based collaborative filtering techniques, combine reviews left by neighboring users with each product to build a model that combines text summary methods among deep learning-based natural language processing methods. Using the IMDb movie database, text reviews of all target user neighbors' movies are collected and summarized to present descriptions of recommended movies. There are several text summary methods, but this study aims to evaluate whether the review summary is well performed by training the Sequence-to-sequence+attention model, which is a representative generation summary method, and the BertSum model, which is an extraction summary model.

Culture, Empire, and Nation: A Critical Appropriation of Edward Said's Culture and Imperialism (문화, 제국, 민족 -비판적 전유를 위한 에드워드 사이드의 『문화와 제국주의』 읽기)

  • Koh, Boo Eung
    • Journal of English Language & Literature
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    • v.58 no.5
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    • pp.903-941
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    • 2012
  • This essay examines Edward Said's Culture and Imperialism focusing on the concepts of 'culture,' 'empire,' and 'nation'. The approach is critical, theoretical, and historical rather than explicatory. Consequently, the range of the essay is not limited to Said's own explanation and argument about Western imperialism and its culture presented in the book. In doing this, this essay finally purposes to be a discursive resistance to the current global empire, the United States, via a critical reading of Said's work. Said's notion of culture is set upon to disclose the function of culture as an apparatus of ideological consent of the dominated to the dominant. When applied to imperial practice, Western culture functions to subject the colonized to the colonizer. Said's geographical approach to imperialism complements the historical understanding of imperialism. Imperialism is not only the practice of Western-centered historicism but also the spatially mutual interaction between the West and the rest of the world. Along with European imperialism, Said poses the current global empire of the United States as his main target of criticism. Said's problem is that he takes the United States as a nation-state. When examined, the United States is not a nation-state, but today's empire. The empire in the appearance of the nation-state United States does not work for the interest of the American nation, that is, the American people. The empire is the transnational and postnational political and economic institution that works for the interest of global capital. In order to resist the current global empire, this essay suggests that the building or restoration of nation-states with its basic principle of people's sovereignty is in need.