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FPGA Implementation of Programmable Digital FIR/IIR Filter
Pushpalatha Chandrasekar,Myeong-U Sung,Geun-Ho Choi,Habib Rastegar,Shin-Gon Kim,Murod Kurbanov,Seung-Kyu Choi,Keun-Pil Kil,Jee-Youl Ryu,Seok-Ho Noh,Min Yoon 한국정보통신학회 2016 2016 INTERNATIONAL CONFERENCE Vol.8 No.1
This paper presents FPGA implementation for programmable digital FIR/IIR filter. Sine wave generation and detecting frequency of the sine wave signals have been proposed. Simulation results show that the system has the ability to provide a better frequency response for various cut-off frequencies. The design has been implemented in Altera, cyclone II family EP2C70F89618 device using Quartus software.
Kim, Young-Il,Kook, Myeong-Cherl,Choi, Jee Eun,Lee, Jong Yeul,Kim, Chan Gyoo,Eom, Bang Wool,Yoon, Hong Man,Ryu, Keun Won,Kim, Young-Woo,Choi, Il Ju The Korean Gastric Cancer Association 2020 Journal of gastric cancer Vol.20 No.2
Purpose: The guidelines for pathological evaluation of early gastric cancer (EGC) recommend wider section intervals for surgical specimens (5-7 mm) than those for endoscopically resected specimens (2-3 mm). Studies in surgically resected EGC specimens showed not negligible lymph node metastasis risks in EGCs meeting the expanded criteria for endoscopic submucosal dissection (ESD). Materials and Methods: This retrospective study included 401 EGC lesions with an endoscopic size of ≤ 30 mm detected in 386 patients. Pathological specimens obtained by ESD or surgery were cut into 2-mm section intervals for reference. Submucosal or lymphovascular invasion (LVI) was evaluated arbitrarily in 4- or 6-mm section intervals. McNemar's tests compared the differences between submucosal and LVI. Results: Submucosal invasion was detected in 29.2% (117/401) and LVI in 9.5% (38/401) at 2-mm interval. The submucosal invasion detection rates in 4-mm intervals decreased to 88.0% or 90.6% (both P<0.001), while the LVI detection rates decreased to 86.8% or 57.9% (P=0.025 and P<0.001, respectively). In 6-mm intervals, the submucosal and LVI detection rates decreased further to 72.7-80.3% (P<0.001 for all three sets) and 55.3-63.2% (P<0.001 for all three sets), respectively. Among 150 out-of-indication cases at 2-mm interval, 4-10 (2.7%-6.7%) at 4-mm intervals, and 10-17 (6.7%-11.3%) at 6-mm intervals were misclassified as lesions meeting the curative resection criteria due to the underestimation of submucosal or LVI. Conclusions: After ESD, the 2-mm wide section interval was suitable for the pathological evaluation of focal submucosal or LVI. Thus, if an EGC lesion meets the expanded criteria for the ESD specimen pathological evaluation, it could be safely followed up.
Association of Age and CKD with Prognosis of Myocardial Infarction
Choi, Joon Seok,Kim, Min Jee,Kang, Yong Un,Kim, Chang Seong,Bae, Eun Hui,Ma, Seong Kwon,Ahn, Young-Keun,Jeong, Myung Ho,Kim, Young Jo,Cho, Myeong Chan,Kim, Chong Jin,Kim, Soo Wan American Society of Nephrology 2013 Clinical journal of the American Society of Nephro Vol.8 No.6
DEVELOPMENT OF SEMI-VLBI SYSTEM AND OBSERVATION OF SUN AT 21 cm
Park Yong-Sun,Kang Hyun-Woo,Kim Hyo-Uk,Kang Heui-Jeong,Jee Myeong-Keun,Lee Sul-Gi,Ahn Jung-Hyun,Kim Jin-Su,Shin Young-Soo,Kang Song-Hun The Korean Astronomical Society 2006 Journal of The Korean Astronomical Society Vol.39 No.2
We report the development of a semi-VLBI observation system operating at 21 cm and present the measurement of visibility function toward the sun using this system. The system consists of two 2.3 meter antennas with a maximum separation of 35 meter, a conventional high speed data acquisition system, and a set of programs for software correlation. Since two local oscillators of receiver modules are independent, data had to be fringe-fitted to yield the visibility amplitude. It is found that the visibility amplitude decreases and then bounces back as baseline increases. We confirm that solar disk with brighter limb best explains the measured visibility amplitude.