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Displaying 5676 - 5700 of 7113

Deconstructing UML, Part 1: Modeling Classes with Categories

May 13, 2021
Author(s)
Sarala Padi, Spencer J. Breiner, Eswaran Subrahmanian, Ram D. Sriram
In this paper we analyze elements of the Unified Modeling Language (UML), specifically the class diagram, and propose an simplified alternative language based on a branch of mathematics called category theory (CT). We argue that modeling in CT provides a

Magneto-optical trapping using planar optics

January 29, 2021
Author(s)
William McGehee, Wenqi Zhu, Daniel Barker, Daron Westly, Alexander Yulaev, Nikolai Klimov, Amit Agrawal, Stephen Eckel, Vladimir Aksyuk, Jabez McClelland
… a promising technology for quantum networking and quantum computing. The optics and vacuum hardware required to prepare …

Formalizing Performance Evaluation of Mobile Manipulator Robots using CTML

November 20, 2020
Author(s)
Omar Aboul-Enein, Yaping Jing, Roger V. Bostelman
Computation Tree Measurement Language (CTML) is a newly developed formal language that offers simultaneous model verification and performance evaluation measures. While the theory behind CTML has been established, the language has yet to be tested on a

Stress and Strain Heuristics for a Layered Elastomeric Foam at Medium Impact Rates

September 14, 2020
Author(s)
Alexander Landauer, Jared C. Van Blitterswyk, Michael Riley, Aaron Forster
Impact mitigating materials (IMMs) are used to reduce injury or damage due to a blunt impact, which often occurs at high rates or energies. Innovation in IMMs and designs strategies are required for the development of safer protective equipment. A key

6 LiF:ZnS(Ag) Neutron Detector Performance Optimized using Waveform Recordings and ROC Curves

January 1, 2020
Author(s)
Kevin N. Pritchard, A. Osovizky, Jeffrey B. Ziegler, Louis E. Binkley, Peter NMN Tsai, Nancy Hadad, M. Jackson, C. Hurlbut, George M. Baltic, Charles Majkrzak, Nicholas C. Maliszewskyj
We used data analysis and pattern recognition techniques to optimize the neutron sensitivity and selectivity of an ultrathin 6LiF:ZnS(Ag) scintillator based neutron detector paired with a Silicon Photomultiplier (SiPM). We recorded waveforms from the

Appraising the extensibility of optics-based metrology for emerging materials

October 4, 2019
Author(s)
Bryan M. Barnes, Mark-Alexander Henn, Martin Y. Sohn, Hui Zhou, Richard M. Silver
To advance computational capabilities beyond conventional scaling limitations, novel device architectures enabled by emerging materials may be required. Optics-based methodologies, central to modern-day process control, will be pursued by the

Using Symmetry To Elucidate the Role Of Stoichiometry In Colloidal Crystal Assembly

May 2, 2019
Author(s)
Nathan Mahynski, Evan Pretti, Vincent K. Shen, Jeetain Mittal
We demonstrate a method based on symmetry to predict the structure of multi-component colloidal mixtures. In this work we focus on two-dimensional systems, for which the method allows us to exhaustively enumerate candidates from all wallpaper groups

Combined error signal in Ramsey spectroscopy of clock transitions

December 18, 2018
Author(s)
V. I. Yudin, A. V. Taichenachev, M. Y. Basalaev, T. Zanon-Willette, Juniper Wren Y. Pollock, Moshe Shuker, Elizabeth Donley, John Kitching
We have developed a universal method to form the reference signal for the stabilization of arbitrary atomic clocks based on Ramsey spectroscopy that uses an interrogation scheme of the atomic system with two different Ramsey periods and a specially

Generalized source-conditions and uncertainty bounds for deconvolution problems

October 1, 2018
Author(s)
Jake D. Rezac, Andrew M. Dienstfrey, Nicholas A. Vlajic, Akobuije D. Chijioke, Paul D. Hale
Many problems in time-dependent metrology can be phrased mathematically as deconvolution problems. In such cases, measured data is modeled as the convolution of a known system response function with an unknown input signal, and the goal is to estimate the

User Instructions and Technical Details for 500 mm GHP Simulation Programs

July 13, 2018
Author(s)
William C. Thomas
This report is a supplement to the paper published as "Transient Thermal Response of an Extended Temperature Range 500-mm diameter Guarded Hot-plate Apparatus" by Thomas and Zarr (2018), hereafter referred to as the "paper." The paper emphasizes the use of

User Instructions and Technical Details for 500 mm GHP Simulation Programs

July 12, 2018
Author(s)
William C. Thomas
This report is a supplement to the paper published as “Transient Thermal Response of an Extended Temperature Range 500-mm diameter Guarded Hot-plate Apparatus” by Thomas and Zarr (2018) [1], hereafter referred to as the “paper.” The paper emphasizes the
Displaying 5676 - 5700 of 7113
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