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Design of a DMA Controller for Augmented Reality in Embedded System
장수연,오정환,윤영현,이성모,이승은,Jang, Su Yeon,Oh, Jung Hwan,Yoon, Young Hyun,Lee, Seong Mo,Lee, Seung Eun The Korea Institute of Information and Commucation 2019 한국정보통신학회논문지 Vol.23 No.7
증강현실은 실제 환경과 함께 가상 정보를 제공하며, 이러한 시스템을 위해 프로세서의 메모리 접근이 요구된다. 하지만 기술 발전에 따라 데이터의 양이 증가함으로써, 프로세서의 작업량 또한 증가하게 된다. 이를 해결하기 위해 임베디드 프로세서의 작업 부하를 감소시킬 수 있는 특정 모듈을 필요로 한다. 본 논문에서는 임베디드 프로세서 대신에 이미지를 출력하는 Direct Memory Acceass(DMA) 컨트롤러를 제안한다. 제안하는 DMA 컨트롤러를 Field Programmable Gate Array(FPGA)에 구현하고 Avalon Memory Mapped(Avalon-MM) 인터페이스를 기반으로 한 DMA 컨트롤러의 기능을 시연한다. 또한, DMA 컨트롤러를 Magnachip/Hynix 0.35um CMOS로 제작하고, 임베디드 시스템의 실현 가능성을 검증한다. An Augmented Reality(AR) provides virtual information with a real environment, and the processor needs to access the memory for the AR system. However, the processor has the heavy workload as the technology improvement leads to increase the size of data. We need a specific module to reduce the workload to overcome the limitation. In this paper, we propose a Direct Memory Access(DMA) controller displaying image instead of the processor. We implemented the proposed DMA controller on a Field Programmable Gate Array(FPGA) and demonstrated the functionality of the DMA controller based on an Avalon Memory Mapped(Avalon-MM) interface. Also, the DMA controller is fabricated by using Magnachip/Hynix 0.35um CMOS technology and verified the feasibility of the embedded system.
한류문화관광요인이 국가이미지와 행동의도에 미치는 영향 : 중국인 인바운드 관광객을 중심으로
장수연(Jang, Su-Yeon),김경숙(Kim, Kyung-Sook) 한국여가복지학회 2020 여가복지경영연구(여가복지) Vol.1 No.1
This study identified the influence of hallyu cultural tourism factors on national image and behavior. Based on the results of the analysis, we will provide useful information to companies and government agencies that provide hallyu cultural tourism factors as tourism products to improve their management performance by providing promotion marketing and future direction of production of products. We collected 250 samples from Chinese tourists. In order to analyze our research questions, we used frequency analysis, factor analysis, and multiple regression using SPSS 23.0. Based on the results, first, we found that there is a significant relationship between Hallyu and national image. Second, we suggested that there was a significant relationship between Hallyu and behavior intention. Lastly, we found that there was a positive relationship between national image and behavioral intention. We hope to further subdivide the various factors of Hallyu culture and tourism to become a study on the influence of national image and degree of behavior. 본 연구는 한류문화관광요인이 국가이미지와 행동의도에 미치는 영향관계를 규명하였다. 실증 분석 결과는 다음과 같다. 첫째, 가설 1을 분석한 결과, 한류문화관광요인 중 한류 스타와 한국 방송은 유의한 영향을 미치나, 한국 가요는 정치적 이미지에 유의한 영향을 미치지 않는 것으로 나타났다. 한류문화관광요인 중 한류 스타와 한국 가요는 경제적 이미지에 유의한 영향을 미치며 한국 방송은 유의한 영향을 미치지 않는 것으로 나타났다. 한류문화관광요인 중 한류 스타, 한국 가요는 문화적 이미지에 유의한 영향을 미치나, 한국 방송은 유의한 영향을 미치지 않는 것으로 나타났다. 한류문화관광요인 중 한국 가요는 관광적 이미지에 유의한 영향을 미치나, 한류 스타와 한국 방송은 유의한 영향을 미치지 않는 것으로 나타났다. 둘째, 가설 2는 한류문화관광요인 중 한류 스타, 한국 가요는 행동의도에 유의한 영향을 미치나, 한국 방송은 유의하지 않는 것으로 나타났다. 셋째, 가설3은 국가이미지(정치적 이미지, 경제적 이미지, 문화적 이미지, 관광적 이미지)와 행동의도 간의 영향관계를 살펴본 결과, 경제적 이미지, 문화적 이미지, 관광적 이미지는 행동의도에 유의한 영향을 미치나, 정치적 이미지는 행동의도에 유의한 영향을 미치지 않는 것으로 나타났다.
오만종(Ou, Man-Jong),장수연(Jang, Su-Yeon) 대한중국학회 2019 중국학 Vol.67 No.-
본 논문은 먼저 ‘우연한 만남’이라는 개념을 표현하는 글자로서 ‘遇’자가 그 초기 형태에서 어떻게 그러한 개념을 나타내게 되었는지를 글자의 어원을 통해 증명하려고 하였다. 그 후 이런 의미의 ‘遇’자가 실제로 어떤 경우에 쓰였는가를 선진 문헌을 중심으로 살펴봄으로써 ‘우연한 만남’의 상황에 ‘遇’자가 사용되었음을 논증하였다. 먼저 周易의 용례를 분석한 결 과, ‘遇’자는 동사로서 각종 인간사의 우연한 만남의 상황에 사용되었음을 보았다. 그리고 春秋에 보이는 용례에서는, 중국의 禮儀문화 배경에서 천자와 제후 간의 四季節의 정기모임중에 겨울의 모임을 지칭하는 명사로 ‘遇’자가 사용되었으며, 아울러 제후 간의 비정기적인 혹은 사전에 기약하지 않은 모임을 나타내는 동사로 사용된 경우를 분석하였다. 이런 분석을 통해 초창기의 ‘遇’자가 갖고 있는 단순한 ‘우연한 만남’의 의미가, 예의문화의 배경 속에서 천자와 제후, 혹은 제후와 제후 간의 비정기적 혹은 우연한 만남을 표현하는 단어로 자주 사용됨으로써 그 의미의 외연이 확대되었음을 알 수 있다. 그리고 이런 의미 외연의 확대를 통해 다양한 인간사의 우연한 만남을 나타내는 보편적 개념을 함의하는 단어로 ‘遇’자를 사용하 게 되었다고 본다. 따라서 본 논문의 주제인 ‘군주와 신하의 관계’에 내포된 우연성을 표현할 수 있는 가장 적절한 단어로 ‘遇’자가 사용되었다고 추론할 수 있다. This paper has foremost attempted to show how the word ‘遇’ has the meaning ‘accidental encounter’ by analyzing the letter’s original shape, and then by proving this word was used with that meaning in early Chinese texts. In the text Zhouyi, we can actually see the word ‘遇’ used in the situation of an accidental encounter as verb. Whereas in the text Chunqiu, we can see the word used as a noun designating a winter meeting between emperors and feudal lords, but also as a verb designating occasional meetings in early Chinese etiquette culture. Through these analyses, we may say the original meaning of the word ‘遇’‘s ‘accidental encounter’ was expanded by several meanings expressing meetings between emperors and feudal lords in early Chinese etiquette culture etc., and it gradually evolved to represent the general concept of ‘accidental encounter’ in human affairs. This paper has also analyzed the pattern of encounter-nonencounter across the Yao·Shun·Yu mythical dynasties.
김효진 ( Hyo-jin Kim ),장수연 ( Su-yeon Jang ),엄미정 ( Mi-jeong Uhm ),박나영 ( Na-young Park ),김용준 ( Yong-jun Kim ),윤순강 ( Sun-kang Yoon ),김주희 ( Ju-hee Kim ),이효섭 ( Hyo-sub Lee ) 한국환경농학회 2023 한국환경농학회 학술대회집 Vol.2023 No.0
Agriculture in Korea is a reality in which continuous use of pesticides is unavoidable due to the characteristics of intensively cultivating various crops. Accordingly, there is a high possibility that pesticides with various residuals exist in agricultural fields. In addition, as the safety management of farm produce was strengthened with the implementation of the PLS, this study was conducted to preserve the sustainable agricultural environment through the investigation of the pesticide residues in the agricultural fields. As test materials, soil samples were collected from 71 orchard soils in the Jeonbuk region, dried, pretreated, and analyzed by GC-MS/MS and LC-MS/MS. For the pesticide residue analysis, the test pesticide MRM and RT were set, the analyzer LOD and LOQ were calculated, and a standard calibration curve was prepared to establish the recovery rate and confirm the quantity of the pesticide. As a result of pesticide residue analysis on 71 orchard soils, 84 components were detected at 40 sites. The area where the most pesticides were detected at 1 point was Buan, where 8 types were confirmed, and in the entire Jeonbuk area, more than 2 components of residual pesticides were detected on average at 1 point. The area with the most detected pesticides was Wanju (6 sites), where residual pesticides of 11 components were detected. The pesticide residues detected at the most points were Boscalid and Fluxapyroxad at 17 points, and the maximum values were 0.137 and 0.227 mg/kg, respectively, which were 2 to 3 times higher than the average concentrations of 0.052 and 0.068 mg/kg. Residual pesticides with high detection concentration values were Fluxapyroxad (0.227 mg/kg), Difenoconazole (0.168), Tetraconazole (0.153), Fluquinconazole (0.147), and Boscalid (0.137), all of which were germicide pesticides. It is thought that pesticide residue analysis can be used as important data for setting indicators for safe farm produce production.
김효진 ( Hyo-jin Kim ),장수연 ( Su-yeon Jang ),엄미정 ( Mi-jeong Uhm ),고도영 ( Do-young Ko ),박나영 ( Na-young Park ),안민실 ( Min-sil An ),윤순강 ( Sun-gang Yun ),이효섭 ( Hyo-sub Lee ) 한국환경농학회 2022 한국환경농학회 학술대회집 Vol.2022 No.-
Since the synthesis of DDT during 1874, the continuous application of pesticides has been inevitable because of the nature of Korea’s agriculture to cultivate various crops. Accordingly, it is a reality that a high possibility existed pesticides with various persistence in agricultural land. In the background, this study was conducted to establish a foundation for sustainable agricultural environment preservation and strengthen the safety management of agricultural productsagricultural production through a survey of agricultural chemical residues according to the PLS implementation. The test pesticide MRM (Multiple reaction monitoring) and RT (Retention time) were set for metabolite monitoring, and the LOD (limit of detection) and LOQ (limit of quantitation) values of the analytical instrument were calculated. Also, a standard calibration curve was prepared for the establishment of recovery rate for organic pollutant analysis and quantitative confirmation. It was estimated that 43 pesticide residues were detected at 53 points out of 70 sites in the upland soil, and less than one pesticide residue was detected at one point on average. The points with the most pesticides detected were K area(8 points), in which 23 kinds of pesticide residues were detected. The pesticide residue detected at 24 points, the most common point, was lmidacloprid, and the maximum detection value was 0.297 mg/kg, which was more than 5 times the average of 0.058 mg/kg. The species of pesticides residue being relatively high maximum detection concentrations were Kresoxim-methyl (2.781 mg/kg), Hexaconazole (2.505), Isoprothiolane (2.338), and Fluquinconazole (1.971). Through this study, it is thought that the analysis of the change of pesticide residues can be utilized as an important data for setting the ‘Safe Zone’ of agricultural land to sustain agricultural production safely in the agricultural environment.