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Development and Evaluation of Avionics for System Identification of Small UAVs
Masaru Naruoka,Takuma Hino,Ryota Nakagawa,Takeshi Tsuchiya,Shinji Suzuki 한국항공우주학회 2008 한국항공우주학회 학술발표회 논문집 Vol.- No.-
A new avionics tor system identification of small unmanned aerial vehicles (UAVs) is proposed in this paper. The proposed avionics consists of three parts: 1) MEMS INS/GPS navigation unit, 2) air data sensor, and 3) command logger. The accuracy and error models of the components are obtained experimentally with a prototype device, and the total performance is evaluated with Monte Carlo simulations which solve the longitudinal stability derivatives of a small UAV with the obtained error model. Furthermore, a real flight log obtained by the prototype device is analyzed. The results shows that the proposed avionics is accurate enough 10 analyze the flight characteristic of small UAVs with the system identification techniques.
( Toshiaki Suzuki ),( Reina Ohba ),( Ei Kataoka ),( Yui Kudo ),( Akira Zeniya ),( Daisuke Segawa ),( Keisuke Oikawa ),( Masaru Odashima ),( Taiji Saga ),( Tomoyuki Kuramitsu ),( Hideaki Sasahara ),( K 대한소화기기능성질환·운동학회 2022 Journal of Neurogastroenterology and Motility (JNM Vol.28 No.1
Background/Aims Gastric acid secretion is suspected to be a pivotal contributor to the pathogenesis of functional dyspepsia. The present study investigates the potential association of the gastric acid secretion estimated by measuring serum pepsinogen with therapeutic responsiveness to the prokinetic drug acotiamide. Methods Dyspeptic patients consulting participating clinics from October 2017 to March 2019 were prospectively enrolled in the study. The dyspeptic symptoms were classified into postprandial distress syndrome (PDS) and epigastric pain syndrome (EPS). Gastric acid secretion levels were estimated by the Helicobacter pylori infection status and serum pepsinogen using established criteria and classified into hypo-, normo-, and hyper-secretion. Each patient was then administered 100 mg acotiamide thrice daily for 4 weeks, and the response rate to the treatment was evaluated using the overall treatment efficacy scale. Results Of the 86 enrolled patients, 56 (65.1%) and 26 (30.2%) were classified into PDS and EPS, respectively. The estimated gastric acid secretion was not significantly different between PDS and EPS. The response rates were 66.0% for PDS and 73.1% for EPS, showing no significant difference. While the response rates were stable, ranging from 61.0% to 75.0% regardless of the estimated gastric acid secretion level among subjects with PDF, the rates were significantly lower in hyper-secretors than in non-hyper-secretors among subjects with EPS (42.0% vs 83.0%, P = 0.046). Conclusion Although acotiamide is effective for treating EPS as well as PDS overall, the efficacy is somewhat limited in EPS with gastric acid hypersecretion, with gastric acid suppressants, such as proton pump inhibitors, being more suitable. (J Neurogastroenterol Motil 2022;28:53-61)