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M-tone 음역 인지에 대한 한·중 청자의 지각 연구
자오원카이 ( Caowenkai ),양정 ( Yangjing ) 중국한국(조선)어교육연구학회 2021 한국(조선)어교육연구 Vol.18 No.0
This study aims to investigate the distribution of pitch range perceived by Korean and Chinese listeners to be M(mid)-tone. A total of sixty Korean and Chinese subjects participated in the perception experiment, which contained thirteen stimuli; a one-syllable nonsense word /ba/ containing the highest pitch was manipulated by lowering the pitch twelve times in sequence per semitone. Subjects heard the same speech stimuli three times in random order, and were required to identify the tone of each. The results showed that the range of M-tone perceived by Korean subjects was approximately -3st to -9st lower than the highest stimuli, accounting for 54% of the total pitch range. The range of M-tone for the Chinese listeners was approximately -2st to -9st lower than the highest stimuli, accounting for 62% of the total pitch range. To summarize, the results indicate that the M-tone range perceived by Koreans is lower and smaller than that of Chinese listeners.
Pt, Ag and Au Nanoparticles on hollow carbon spheres as cathode ORR
Yuhan Jiang,Linlin Guan,Yangjing Jiao,Chunxin Yu,Fang Zhao,Xiaowei Zhou,Zhu Liu 대한금속·재료학회 2024 ELECTRONIC MATERIALS LETTERS Vol.20 No.2
Hollow carbon spheres (HCS) have been employed as supporting materials for Pt, Ag, and Au nanoparticles (NPs) in theoxygen reduction reaction (ORR). The NPs Pt, Ag, and Au have been hydrothermally coated on HCS uniformly. The diameterof the Pt, Ag and Au NPs ranges between 11 and 32 nm, with the loading of 4.58, 4.73, and 4.07 wt.%, respectively. Itis found that Pt, Ag, and Au/HCS exhibit stable catalytic activity after 5000 CV scanning and follow a four-electron routein the ORR. Among them, Tafel plots show that Ag/HCS has the fastest kinetic rates and Pt/HCS has the largest eff ectiveactive area from CV curve. Hence HCS provides a stable supportive material for Pt, Ag, Au nanoparticle catalysts in theORR due to its nanopores structure and large surface area.
Effects of Different Rotational Grazing Time on the Plant Population of Desert Steppe
Yang Jing,Liu Hongmei 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
The effects of different rotational grazing time on the main plant population characteristics of desert steppe were investigated in this experiment. The main results were shown as follows: the height of Stipa breviflora in late grazing plot was more superior than that in early plot, and the coverage and density of Alliumpoly rrhizum presented an obvious advantage.
Design and Implementation of Vibration Energy Harvester Based on MSMA Cantilever Beam
Yang Jing,Wang Luping,Xu Jin 한국전기전자재료학회 2020 Transactions on Electrical and Electronic Material Vol.21 No.4
Vibration energy exists widely in nature, and the use of intelligent materials to harvest vibration energy to power microelectronic systems is a trend in the fi eld of new energy. In this paper, the inverse eff ect of magnetic shape memory alloy (MSMA) that is a new intelligent material, is used to design a new kind of vibration energy harvester, which is based on integrated cantilever beam. The structure of cantilever beam and magnetic fi eld loop are optimized, and the ideal structure model of vibration energy harvester is established. The magnetic fi eld is analyzed by using ANSYS fi nite element software. On the basis of developing the prototype of the harvester, the experimental platform is built and the harvester is tested. The results show that the output voltage of the MSMA vibration energy harvester based on cantilever beam can reach more than 300 mV, which has a wide frequency band of vibration energy harvesting, and possesses a good prospect for development and application.
Satellite Attitude Determination in Post-processing Based on URTS Optimal Smoother
YANG Jing,LEI Xuan 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10
In order to provide accuracy referential attitude of remote sensing satellite for images processing, all measurements obtained by the attitude determination system are processed offline periodically to fusion temporal information effectively. RTS (Rauch-Tung-Striebel) optimal fixed-interval smoothing algorithm based on UKF (Unscented Kalman Filter) forward filter was employed for data post-processing with considering the nonlinearity of gyro/star sensor integrated attitude determination system. The simulation results show that, compared with EKF (Extended Kalman Filter), UKF shows better performance on convergence and accuracy of attitude estimation under the condition of large initial state errors. The influence on the attitude estimation error caused by the initial state error and the sigma-points sampling distance of UKF was weakened by the RTS fixed-interval smoothing obviously, and the accuracy of the attitude estimation was improved effectively.
Optimal Packet Scheduling in a Multiple Access Channel with Energy Harvesting Transmitters
Yang, Jing,Ulukus, Sennur The Korea Institute of Information and Commucation 2012 Journal of communications and networks Vol.14 No.2
In this paper, we investigate the optimal packet scheduling problem in a two-user multiple access communication system, where the transmitters are able to harvest energy from the nature. Under a deterministic system setting, we assume that the energy harvesting times and harvested energy amounts are known before the transmission starts. For the packet arrivals, we assume that packets have already arrived and are ready to be transmitted at the transmitter before the transmission starts. Our goal is to minimize the time by which all packets from both users are delivered to the destination through controlling the transmission powers and transmission rates of both users. We first develop a generalized iterative backward waterfilling algorithm to characterize the maximum departure region of the transmitters for any given deadline T. Then, based on the sequence of maximum departure regions at energy arrival instants, we decompose the transmission completion time minimization problem into convex optimization problems and solve the overall problem efficiently.
Yang Jing,Li Baochao,Wang Jiangming,Fan Wenxing 한국유전학회 2023 Genes & Genomics Vol.45 No.12
Background Chronic renal failure (CRF) is the result of kidney damage. Puerarin is a flavonoid with specific nephroprotective effect, but its effect on CRF needs further research. This study explored the effect of puerarin on CRF and the potential molecular mechanism. Methods Adenine was used to establish an in vivo CRF model in rats, and rats were intragastrically administered with puerarin at a dose of 400 mg/kg body weight once a day from day 1 to day 28. Hematoxylin and eosin (HE) and Masson staining were used to observe the morphology and fibrosis of kidney tissue. Lipopolysaccharide (LPS) (400 ng/mL)/H2O2 (200 µM) was applied to human kidney 2 (HK-2) cells to construct an in vitro CRF model. Enzyme-linked immunosorbent assay (ELISA) was performed to validate interleukin (IL)-1β and IL-18 levels. Quantitative reverse transcription polymerase chain reaction (RT-qPCR) was performed to detect microRNA (miR)-342-3p levels. Transforming growth factor beta (TGF-β)1, SMAD2, SMAD3, and pyroptosis marker proteins were detected by Western blot. The interaction between miR-342-3p and TGF-β/SMAD was determined by a dual-luciferase reporter gene assay. Cell Counting Kit-8 (CCK-8) assay was utilized to determine cell viability. Results In the CRF model, puerarin alleviated renal injury and fibrosis and reduced creatinine (Cr) and blood urea nitrogen (BUN) levels. At the same time, miR-342-3p was downregulated, while the TGF-β/SMAD axis was activated and levels of IL-1β and IL-18 were increased. After treatment of CRF rats with puerarin, the expression level of miR-342-3p was increased, the TGF-β/SMAD axis was inhibited, and the secretion of IL-1β and IL-18 was decreased. MiR-342-3p directly bound to and negatively regulated the expression of TGF-β1, SMAD2, and SMAD3. In the in vitro CRF model, miR-342-3p inhibited HK-2 cell pyroptosis by inhibiting the TGF-β/SMAD axis. Conclusion Puerarin reduced renal injury and pyroptosis in CRF rats by targeting the miR-342-3p/TGF-β/SMAD axis.