3,532 research outputs found
Chao Yuen Ren (1892–1982)
No full textY. R. Chao is easily the most famous linguist to have come out of China. Born before the end of the last dynasty in China, he received a traditional Confucian education, but was also one of the first Chinese people to be sent to the West for training in modern Western science (under the Boxer Indemnity Fund). The remarkable breadth and scope of his studies included physics, mathematics, linguistics, musical and literary composition, and translation, and he was a pioneer in many of these fields
A fully coupled model for actuation of higher order modes of Lamb waves
No full textLamb waves have proven to be a valuable tool for structural health monitoring (SHM) of plate-like structures susceptible to degradation. It is well-known that the multi-modal propagation characteristics provide both challenges and opportunities. Piezoelectric transducers are widely used in SHM applications because of their low cost, small profile and strong electromechanical coupling. Properly designing a piezoelectric transducer to excite a particular mode is of great importance to successful SHM practice. The mode tuning capability of piezoelectric transducers has been studied both theoretically and experimentally in the literature for exciting A0 and S0 modes. However, the tuning characteristics of higher order Lamb waves have been studied far less. Also, the transducer is usually modeled separately from the waveguide and their coupling is typically through the in-plane surface tractions. This assumption may induce inaccuracy if the dynamics of actuator are not negligible. The presence of the transducer can also interact with the waves being generated or received, especially if the transducer footprint is substantial. Additionally, the driving circuit is not usually included in the current actuator-waveguide model and thus the power of excited waves cannot be evaluated. In this work, a fully coupled finite element analysis model created for general Lamb wave excitation using piezoelectric transducers is developed. The model comprises three components, electrical driving circuit, piezoelectric element and linear elastic waveguide. The design of the piezoelectric transducer, i.e. width and thickness, for higher order Lamb wave mode excitation is performed for both aluminum and CFRP plates. The design is optimized for both mode tuning capability and power delivery. Experiments are carried out to verify the design.</p
In-line inspection of unpiggable buried live gas pipes using circumferential EMAT guided waves
No full textEntanglement and quantity in quantum space - About quantum measurement (II)
No full textAs a continuation and extension of "quantity in phase space" "quantity in quantum space" is introduced. With that, the disappearing of quantum interference discussed in a previous paper [S. Durr, et al., Nature 395 (1998) 33] is explained in the same spirit as our recent papers [Ren De-Ming, Commun. Theor. Phys. (Beijing, China) 41 (2004) 685, 833].Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)1ARTICLE133-364
Adatok a "Ren duplex" kérdés tisztázásához
No full textAuf Grund der Literaturangaben und von sechs eigenen Fallen halten wir folgende Gesichtspunkte in der Einteilung der unter dem Namen des Ren duplex zusammengefassten Entwicklungsvariationen für massgebend: 1. Ren supernumerarius: Mehr als zwei Nieren namlich gesondert, mit eigener Kapsel und eigenen Ableitungswegen. 2 . Ren duplex: Zwei gesondertc Parenchyme, mit entsprechenden Ableitungswegen in einer gemeinsamen Kapsel — bei Anwesenheit einer Anderseitigen Niere. 3. Pyelon und ureter duplex: Nibre in gemeinsamer Kapsel, mit gemeinsamen Parenchym, aber mit gesonderten Abloitungswegen. SUMMARY: On the basis of publications from literature and of six cases examined by the author anatomical varieties summarized under the name of „ren duplicatus“ are suggested to be claissified according the following aspects: 1 . Ren supernumerarius: More than two fully separated kidneys, such with own capsule, pyelon and ureter. 2. Ren duplex: Two separated pareochymata inside of a common capsule each with his own ureter — 'in the presence of a Kidney on the other side. 3. Pyelon and ureter duplex: Two separated efferent Systems (pyelon and ureter) belonging to common parenchyma situated in common capsule
?Ren? Depestre, Eros in un treno cinese, trad. di Anna Devoto, Jaca Book?
No full textPresentation of the book "Eros in un treno cinese" of the author Ren? Depestre, translated by Anna Devoto.Presentazione del romanzo "Eros in un treno cinese" dell\u27autore Ren? Depestre, tradotto da Anna Devoto
Quantitative verification of thin-film polyvinylidene fluoride (PVDF) transducer array performance up to 60 °C
No full textParasitic copepods from Egyptian Red Sea fishes: Bomolochidae Claus, 1875
No full text© The Author(s) 2015
Open Access - This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The attached file is the published version of the article.NHM Repositor
Chao. III. Selections
No full textLive recording.Selections from Yuen Ren Chao's diary.Electronic reproduction from Rulan Chao Pian Audio Cassette Collection.Spoken in English
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