9,410 research outputs found
Supl_Table_1and2_JAH-17-497.R3 – Supplemental material for Mental Work Demands and Late-Life Cognitive Impairment: Results From the Shanghai Aging Study
No full textSupplemental material, Supl_Table_1and2_JAH-17-497.R3 for Mental Work Demands and Late-Life Cognitive Impairment: Results From the Shanghai Aging Study by Xiaoniu Liang, Zhao Chen, Xinqi Dong, Qianhua Zhao, Qihao Guo, Li Zheng, Wei Deng, Jianfeng Luo, and Ding Ding in Journal of Aging and Health</p
Clues, flow channels, and cognitive states: an exploratory study of customer experiences with e-brokerage services
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Wuhan pulsed high magnetic field center
No full textWuhan pulsed high magnetic field facility is under development. Magnets of bore sizes from 12 to 34 mm with the peak field in the range of 50 to 80 T have been designed. The pulsed power supplies consists of a 12 MJ, 25 kV capacitor bank and a 100 MVA/100 MJ flywheel pulse generator. A prototype 1 MJ, 25 kV capacitor bank is under construction. Five magnets wound with CuNb wire and copper wire reinforced internally with Zylon fiber composites and externally with stainless steel shells have been developed to be tested to verify the design. The design and analysis of the power supplies, the pulsed magnets and the inductors for the protection of the thyristor switches are presented in this paper.sponsorship: Liang Li; Tao Peng; Hongfa Ding; Xiaotao Han; Zhengcai Xia; Tonghai Ding; Jin Chen; Junfeng Wang; Jianfeng Xie; Shaoliang Wang; Xianzhong Duan; Cheng Wang; Yuan Pan; Pulsed High Magn. Field Center, Huazhong Univ. of Sci. & Technol., Wuhan, Chinastatus: Publishe
A design for Six Sigma case study: creating an IT change management system for a mid-size accounting firm
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Introduction to the special section on cocreating the customer service experience with high tech and high touch
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Author Correction: A Satellite Imagery Dataset for Long-Term Sustainable Development in United States Cities
No full textCorrection to: Scientific Data, published online 04 December 2023 In this article the author name Jingtao Ding was incorrectly written as Jintao Ding. The original article has been corrected.</p
Optical PAM-4 signal generation using a silicon Mach-Zehnder optical modulator
No full textAn analytic model is proposed to study the linearity performance of the silicon Mach-Zehnder optical modulator. According to the simulation results, we optimize the width of the silicon rib waveguide and the location of the PN junction to improve the linearity performance. The fabricated silicon Mach- Zehnder optical modulator has a spurious free dynamic range of 113.3 dB.Hz(2/3) and 88.9 dB.Hz(1/2) for the third-order intermodulation distortion and the second-order harmonic distortion. We also demonstrate the optical fourlevel pulse-amplitude-modulation (PAM-4) signal generation through the device. The generated optical PAM-4 signal is characterized at the rates up to 35 Gbaud. The BERs of the optical PAM-4 signals can reach 5.2x10(-6) at 20 Gbaud and 6.6x10(-5) at 32 Gbaud, which are much lower than the threshold of hard decision forward error correction (3.8x10(-3)). (C) 2017 Optical Society of AmericaProgram 863 [2015AA015503, 2015AA017001]; National Key R&D Program of China [2017YFA0206402, 2016YFB0402501]; National Natural Science Foundation of China (NSFC) [61535002, 61505198, 61235001, 61575187, 61377067]SCI(E)ARTICLE1923003-230132
Chemical analysis of white porcelains from the Ding Kiln site, Hebei Province, China
No full textThe Ding kilns were some of the most famous early kilns of medieval China, producing huge quantities of white and cream-white porcelains of outstanding technical and aesthetic quality. Since 1949 they have been excavated three times, in 1965, in 1987, and in 2009 respectively. In this latest study 69 white porcelain sherds from assured contexts and from the 2009 excavations were analyzed using laser ablation techniques (ICP-AES). The samples date from Five Dynasties, Northern Song and Jin Dynasties respectively (early 10(th) to early 13(th) C CE). The results show that Ding wares of different times show different characteristics that can be demonstrated through chemical composition. During the early phase of production the Ding ware bodies consisted largely of high firing kaolinitic clays with predominantly calcareous materials as fluxes. After the early Northern Song Dynasty, some calcareous material was replaced by a more potassic material. The compositions of the glazes show a parallel evolution to the bodies. However, because the glazes are very low in titania it seems unlikely that the main clay ingredients of the bodies could have been used in the glaze recipes. For much of the kiln site's history the glazes appear to have been made mainly from the same siliceous flux-rich materials that had been blended with the main body-clays used to make the Ding ware porcelains, plus some extra calcareous material. The P2O5 contents of the glazes suggest that wood ash may have been one source of CaO in the glaze recipes. (C) 2011 Elsevier Ltd. All rights reserved.AnthropologyArchaeologyGeosciences, MultidisciplinaryA&HCISCI(E)SSCI0ARTICLE4818-8273
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