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Multi-Class Classification of Fatigued Banknotes by using Frequency Spectral Difference
Dongshik Kang,Zahra Nazari,Yugo Mitsui,Kenji Ozawa,Nobuo Shoji 대한전자공학회 2015 ITC-CSCC :International Technical Conference on Ci Vol.2015 No.6
The vending machines with a banknote handling device are widely used in Japan. The fatigued banknotes is the main reason of paper jam problems in these machines. Therefore we propose a method to solve this problem by extracting the features of fatigued bills that is not depend greatly on the classifier. The method is to detect the feature quantity of the frequency difference from acoustic signals of banknotes. This feature quantity is possible to cope with time-series change of the acoustic signal by the fatigued degree of banknotes. And the discrimination experiments of fatigued banknotes were performed by Dynamic Time Warping (DTW) with the frequency difference as input. The results showed that this feature quantity is effective to classify the fatigued banknotes.
김동식(DongShik Kim),채상훈(SangHoon Chai) 호서대학교 공업기술연구소 2015 공업기술연구 논문집 Vol.34 No.1
IoT 센서노드 무선통신부에 내장하기 위한 900MHz RF 주파수 합성기를 0.18剛 실리콘 CMOS 기술을 이용하여 설계하였다. 고속 저잡음 특성을 얻기 위하여 VCO 회로 설계 최적화에 중점을 두었으며, 특히 VCO 는 코어 구조 및 캡 뱅크를 최적화하여 초저잡음 특성을 확보하였다. 시뮬레이션 결과 VCO의 최저 위상잡음은 lOOKHz 오프셋에서는 최대 5.2dBc/Hz, 1MHz 오프셋에서는 최대 20.3dBc/Hz 개선되는 특성을 보였다. This paper describes design of the 900MHz RF frequency synthesizer with 0.18/zm silicon CMOS technology being used as an application of the IoT sensor node transceiver modules. To get good performance of speed and noise, de sign of the VCO module has been optimized. Especially to get best performance of phase noise core structure and cap. bank has been optimized in design of the VCO. The simulation results show that there is in^jrovement mini mum 5.2dBc/Hz of phase noise on lOOKHz offset and maximum 20.3dBc/Hz on 1MHz o^e t in VCO.
자동차용 플라스틱부품 재질에 따른 마찰소음 발생에 관한 실험적 연구
최동식(Dongshik Choi),이상호(Sangho Lee) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_3
Experimental analysis has been carried out to investigate squeak noise caused by mutual friction between plastic materials which are used in automobile parts. It is focused on the investigation of the relation between the noise and the plastic part materials such as ABS(Acrylonitrile Butadiene and Styrene) resin and Polypropylene. Experiments are performed for various combinations of the plastic materials with several abrasive loads and it is shown that relative difference in physical properties of materials affects much of the squeak noise. Conclusively it was shown that materials should be chosen with similar physical properties to the counterpart in order to minimize the squeak noise. The result of this study is intended to reflect in the design of parts in regard of matching optimum noise for specific material, and further to be source materials for improvement effect on the sensitive quality in automobile.
신동식(Shin, Dongshik) 국제관광산업학회 2009 국제관광산업연구 Vol.2 No.3
As national income of our country increases, the trend of leisure tourism has been expanding its destinations from inland to marine area. Accordingly it is expected blue tourism toward the ocean and islands is fastly growing in the near future. At this juncture, it is very desirable to develop tourism product regarding Dokdo which is located in far east of our territory. As Dokdo is closely related to Ulleungdo, so combined developing study for these islands should be considered. For the method of the study, the topic-related specialists were chosen from the academic, industrial and governmental organizations. All of them were interviewed regarding the issues and development for Dokdo tourism product, and only the common ideas were accepted for desirable conclusion. In order to activate the Dokdo tourism, the results of the study show that firstly, the accessability from inland to the results of the study show that firstly, the accessability from inland to the islands should be improved. Secondly, the differentiated local tourism products should be continuously developed. Thirdly, the tourism infrastructure both for residents' benefits and for tourists attractions should e installed. Fourthly, the total marketing system should be carried out for the maintenance of the competitiveness as a tourism destination. Fifthly, the concerned governmental authorities should establish the responsible organizations for the efficient and effective fulfillment regarding general development of the islands.
텍스트로서의 주체와 ‘리얼리즘의 승리’ : 김남천 비평에 관한 몇 개의 주석
김동식(Kim Dongshik) 한국현대문학회 2011 한국현대문학연구 Vol.0 No.34
이 글은 김남천의 1930년대 비평을 통해서 주체성과 텍스트의 관계를 고찰한 논문이다. 1930년대 중반에 이루어진 주체의 분열 및 주체의 재건과 관련된 논의는 단순히 카프 해산 이후의 혼란을 반영하는 것은 아니다. 1930년대 중반의 주체 논의는 마르크스주의 문학운동이 마르크스의 사상에 의해 부정되는 역설적인 상황과 관련이 있다. 또한 소시민성을 극복하여 볼세비키적인 주체를 구성하는 데 실패했다는 자기반성과 관련된다. 소시민성(김남천의 용어로는 ‘유다적인 것’)을 극복하고 마르크스주의 미학에 합류하는 데 있어서 가장 좋은 모델이 바로 발자크의 리얼리즘의 승리였다. 김남천은 리얼리즘의 승리를 매개하여 단순한 문학적 방법이 아니라 주체성의 원리로 리얼리즘을 받아들이게 된다. 그 결과 1939년의 김남천은 매우 놀랍게도 자신의 주체를 텍스트의 효과로서 인식하게 된다. 김남천에게 있어 리얼리즘은 마르크스주의를 텍스트의 무의식으로 배치하는 방법이었고, 텍스트는 소시민성을 넘어선 새로운 주체가 재건될 장소였다. 이를 두고 텍스트로서의 마르크스주의의 발견이라고 불러도 크게 틀리지 않을 것이다. This paper inquires into the relationship between the subjectivity and the texts through Namcheon Kim’s literary criticism in the 1930s. The debate regarding to the disruption of the subject and its reconstruction in the mid 1930s did not simply reflect the confusional aftermath of the KAPF’ dispersion. The discussion on the subjects of mid 1930s had to do with the paradoxical situation in which Marxist literary movements were denied by Marxist ideologies. And it was relevant to the introspection of the failure in the overcoming the petit bourgeois and the establishing the Bolshevist subjects as well. Balzac’s ‘the Triumph of Realism’ was the best example to get over the petit bourgeois _‘the thing of Judas’, according to Namcheon Kim’s terms - and to merge into the Marxist aesthetics. Namcheon Kim accepted the realism as the principle of the subjectivity, not merely for the literary methods mediated by ‘the Triumph of Realism’. Consequently, Namcheon Kim got to recognize his own subject as the effect of the text in 1939. As for Namcheon Kim, realism was the means to deploy the Marxism into the unconsciousness of texts, and the texts was the location where the new subjects transcending the petit bourgeois would be reconstructed. This being so, it would not too far to say ‘the discovery of Marxism as text’ with this.
진동식(Jin, Dongshik) 한국사전학회 2013 한국사전학 Vol.- No.22
This study aims to examine the relationship between translation errors and those of English-Korean dictionaries, and thereby to suggest that errors of English-Korean dictionaries are detrimental to not only learners" study of English but also translations, which results in readers’ inappropriate understanding of the translated texts. In fact, there are many factors to cause translation errors: from linguistic and socio-cultural differences between the two languages to the translator’s L1 fluency. It is not an overstatement, however, to say that errors of bilingual dictionaries are one of the most important causes for the translation errors, given that they are the primary reference materials for translators to use for their translations. Nevertheless, many studies have shown that English-Korean dictionaries have various serious errors, including inappropriate equivalents, lack of contextual information, and etc.