Results 11 to 20 of about 4,931,974 (307)

High-Speed Electrochemical Imaging [PDF]

ACS Nano, 2015
The design, development, and application of high-speed scanning electrochemical probe microscopy is reported. The approach allows the acquisition of a series of high-resolution images (typically 1000 pixels μm(-2)) at rates approaching 4 seconds per frame, while collecting up to 8000 image pixels per second, about 1000 times faster than typical imaging
Dmitry Momotenko, Joshua C. Byers, Kim McKelvey, Minkyung Kang, Patrick R. Unwin   +4 more
openaire   +2 more sources

High-speed high-security signatures [PDF]

Journal of Cryptographic Engineering, 2011
This paper shows that a $390 mass-market quad-core 2.4GHz Intel Westmere (Xeon E5620) CPU can create 108000 signatures per second and verify 71000 signatures per second on an elliptic curve at a 2128 security level. Public keys are 32 bytes, and signatures are 64 bytes.
Bernstein, D.J., Duif, N., Lange, T., Schwabe, P., Yang, B.Y.   +4 more
openaire   +5 more sources

A Position Estimator Using Kalman Filter With a Data Rejection Filter for a Long-Stator Linear Synchronous Motor of Maglev

IEEE Access, 2020
As a maglev levitates with a small air gap and runs very fast, securing the levitation system's stability is crucial. Thus, the high-performance decoupling control between the propulsion control system and the levitation system is of critical importance.
Jeong-Min Jo, Seok Y. Lee, Kwangjoo Lee, Ye Jun Oh, Su Y. Choi, Chang-Young Lee, Kwansup Lee   +6 more
doaj   +1 more source

Analysis and Optimization of the Causes of Cracks in the Pavement of Highway and Railway Intersections [PDF]

E3S Web of Conferences
Firstly, an in-depth analysis is conducted on the principle of crack formation in the pavement panel of highway and railway level crossings and the reasons for cracks under load. Then, based on the characteristics of crack formation in the pavement panel,
Huang Xingqi, Liu Dashun, Lian Dong, Liu Fengmao   +3 more
doaj   +1 more source

On the stability of high-speed milling with spindle speed variation [PDF]

, 2010
Spindle speed variation is a well-known technique to suppress regenerative machine tool vibrations, but it is usually considered to be effective only for low spindle speeds.
BP Mann, E Al-Regib, E Budak, E Solis, F Yang, Gilles Dessein, Grégoire Peigné, GS Duncan, H Paris, H Zhang, J Tlusty, J Tlusty, JS Sexton, JS Sexton, JS Sexton, Lionel Arnaud, M Zatarain, MA Davies, ML Campomanes, ND Sims, PV Bayly, R Radulescu, RPH Faassen, S Jayaram, S Sastry, S Seguy, S Seguy, S Smith, SA Tobias, SC Lin, SD Merdol, Sébastien Seguy, T Insperger, T Insperger, T Insperger, T Insperger, T Surmann, T Takemura, Tamás Insperger, TC Tsao, XH Long, Y Altintas, Y Altintas, Y Altintas   +43 more
core   +4 more sources

Chatter Control by Spindle Speed Variation in High-Speed Milling [PDF]

, 2009
High-speed milling operations are often limited by regenerative vibrations. The aim of this paper is to analyze the effect of spindle speed variation on machine tool chatter in high-speed milling. The stability analysis of triangular and sinusoidal shape
Arnaud, Lionel, Dessein, Gilles, Insperger, Tamás, Seguy, Sébastien   +3 more
core   +2 more sources

Building vulnerability assessment on an urban scale: A case study on heavy rainfall events [PDF]

E3S Web of Conferences
This paper presents a semi-automated approach for assessing building vulnerability on an urban scale, specifically focusing on floods and heavy rainfall events.
Rosin Julia, Vetter Joanna Zarah, Neuhaeuser Stefan, Stolz Alexander   +3 more
doaj   +1 more source

Status of research on non-conventional technology assisted single-point diamond turning

Nanotechnology and Precision Engineering, 2023
With the increasing use of difficult-to-machine materials in aerospace applications, machining requirements are becoming ever more rigorous. However, traditional single-point diamond turning (SPDT) can cause surface damage and tool wear.
Zhuang Chen, Guangjun Chen, Zhiwei Yu, Jiashuai Huang, Hong Wei   +4 more
doaj   +1 more source

Research on Variable-Step-Size Adaptive Filter Algorithm with a Momentum Term

Applied Sciences, 2023
To address the contradiction between the convergence error and convergence rate in the LMS algorithm, this study proposes a variable-step-size adaptive filter algorithm with a momentum term based on the logistic function.
Binbin Li, Bo Lu, Xiping Kou, Yang Shi, Li Yu, Hongtao Guo, Binbin Lv, Kaichun Zeng   +7 more
doaj   +1 more source

Study on Flow Mechanism of a Morphing Supercritical Airfoil

Shock and Vibration, 2021
In order to maintain the best performance in flight, a new concept, morphing aircraft, has been proposed, which can change the real-time aerodynamic characteristics under different flight conditions.
Yuanjing Wang, Binbin Lv, Pengxuan Lei, Wenkui Shi, Yu Yan   +4 more
doaj   +1 more source