376 research outputs found
A Smooth 1-Parameter Family of Delaunay-Type Domains for an Overdetermined Elliptic Problem in and
No full textWe prove the existence of a non-compact smooth one-parameter family of domains Ωs⊂Mn×R, where Mn denotes the Riemannian manifold Sn or Hn (for n≥2), bifurcating from the straight cylinder B1×R (where B1 is a geodesic unit ball in Mn) such that there exists a positive solution u to (Formula presented.) for some positive constant λ, where g is the standard metric in Mn×R, and ν represents the unit normal vector about ∂Ωs. The domains Ωs are not straight cylinders but are periodic in the direction of R. This improves a previous result by the second and third author
“The formation of modern written language. Writing categories and polysyllabic words”
No full textIn his “Wenxue gailiang chuyi” (A tentative proposal for the reform of literature), Hu Shi set forth the necessity to reform both the gist and the form of literature. Thereafter, he recognised the close connection between the reform of literature and that of the Chinese language, advancing the proposals of “Jianshe de wenxue geming lun: guoyu de wenxue, wenxue de guoyu” (The theory of a constructive literary revolution: a literature in the national language, a national literary language). Nevertheless, when looking at the history of the Xixue Dongjian (The transfer of Western knowledge to the East) from the 16th century onwards, the connections between the Chinese language and the presentation of modern knowledge, i.e. the recounting of science, are broader and more thorough than the contents touched upon by “literature”. A question of the uttermost importance was how to employ the Chinese language to narrate science; after Hu Shi, personalities such as Chen Duxiu, Liu Bannong and Fu Sinian discussed the difference between literary and non-literary writings from the perspective of language form. In this article, the author examines the possibility for the Chinese language to convey modern knowledge at the turn of the 19th and 20th century, what transformations the Chinese language required in order to achieve this purpose and the question of whether the national language dictionary Ciyuan prepared the way for it
Bandwidth Optimization Design of a Multi Degree of Freedom MEMS Gyroscope
No full textA new robust multi-degree of freedom (multi-DOF) MEMS gyroscope is presented in this paper. The designed gyroscope has its bandwidth and amplification factor of the sense mode adjusted more easily than the previous reported multi-DOF MEMS gyroscopes. Besides, a novel spring system with very small coupling stiffness is proposed, which helps achieve a narrow bandwidth and a high amplification factor for a 2-DOF vibration system. A multi-DOF gyroscope with the proposed weak spring system is designed, and simulations indicate that when the operating frequency is set at 12.59 kHz, the flat frequency response region of the sense mode can be designed as narrow as 80 Hz, and the amplification factor of the sense mode at the operating frequency is up to 91, which not only protects the amplification factor from instability against process and temperature variations, but also sacrifices less performance. An experiment is also carried out to demonstrate the validity of the design. The multi-DOF gyroscope with the proposed weak coupling spring system is capable of achieving a good tradeoff between robustness and the performance
Fabrication and characterisation of polysilicon-based clamped-clamped filter
No full textThe rapid growth of micromaching technology makes the miniaturized or integrated MEMS resonator or filter become possible. This paper reports on the fabrication and characterization of the polysilicon-based RF MEMS filter, comprised of the two clamped-clamped resonators coupled with the micro dimensions beam. The surface micromaching technology has been adopted to fabricate the clamped-clamped filter. The fabricating process and the optimization of the typical micromaching process for the MEMS RF filter are illustrated in detail. After the fabrication, the resonating characteristics are measured. The center frequency of30 MHz of the micromechanical bandpass filter is demonstrated.?(2011) Trans Tech Publications
A Study of Modern Chinese Disyllabic Words: An Introduction to Language Contact and Modernization of Chinese
No full textKey Leaders’ Opinion on Peri-Operative Risk Factor and Therapeutic Strategy in Lung Cancer Surgery
No full textPerioperative care remains a hot and controversial issue to thoracic surgeons with their multidisciplinary teams in the current clinical practice of lung cancer surgery. A better understanding regarding a series of effective and simple risk factors will provide significant assistance to identify which patients should be considered at high surgical risk. Subsequently, an accurate and personalized treatment scheme based on these putative prognostic factors will be vital to prevent the morbidity risk, enhance the surgical tolerability, and limit the unfavorable survival. Each contributing author has a particular interest in the selected hot subjects of modern perioperative medicine in lung cancer surgery, including body composition, host immune-nutritional status, tumor spread through air spaces (STAS), conversion to thoracotomy, enhanced recovery after surgery (ERAS), elderly health care, protective ventilation, intraoperative fluid management, digital pleural drainage technology, lung ultrasonography, endoscopic intervention, etc. They have given their influential opinions by literature review, personal expertise, and outcome discussion from their works. In this way, this book can help the readers get a comprehensive scenario about the current research highlights of perioperative risk factor analysis and appropriate treatment options in lung cancer surger
Feed-through cancellation of a MEMS filter using the difference method and analysis of the induced notch
No full textAtomic Mechanism of Interfacial-Controlled Quantum Efficiency and Charge Migration in InAs/GaSb Superlattice
No full text- …
