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Displaying 4751 - 4775 of 7112
Jiann C. Yang, I Vazquez, C I. Boyer, Marcia L. Huber, L A. Weber
Experimental measurements of selected thermodynamic properties of alternative agent/nitrogen mixtures were performed. The selected alternatives were HFC-227 ea (C3HF7), CF3I, FC-218 (C3F8), and HFC-125 (C2HF5); CF3Br was also included as a reference. A
Emerging computer technology, including an infrastructure for virtual enterprises and more capable apparel product development software, is providing an opportunity to reinvent how apparel is produced. The development of an information-rich and unambiguous
Current manufacturing planning software systems, such as computer aided process planning (CAPP) systems, are general and in a closed form. It is very difficult to modify these systems to respond to a user's dynamically changing needs. These systems are no
This report presents a bottom up view of the requirements, industry practices, and research questions which should drive new methods and computer tools for process modeling of product realization. It does not prescribe, or even discuss in detail, formal
Issues dealing with fast, 3-D, collision-free motion planning are discussed, and a fast path planning system under development at NBS is described. The components of a general motion planner are outlined, and some of their computational aspects are
Emre Brookes, Joseph E. Curtis, Aaron Householder, Mattia Rocco
AI programs such as AlphaFold (AF) are having a major impact on structural biology. However, predicted unstructured regions, the arrangement of linker-connected domains and their conformational changes in response to environmental variables present
… century with the development of digital data logging, computing, data analysis, and scientifically based predictive models. Digital computing has opened the theoretical world that provides …
… century with the development of digital data logging, computing, data analysis, and scientifically based predictive models. Digital computing has opened the theoretical world that provides …
Christopher Kniss, Abhishek Sharma, Ratanak Phon, Gregory Shimon, Eran Socher, Pragya Shrestha, Karthick Ramu, Jason Campbell, Amin Pourvali, Richard Al Hadi, Yanghyo Kim
… The recent surge in cryogenic high-performance computing and quantum computing has driven the demand for scalable cryogenic …
Kangming Li, Kamal Choudhary, Brian DeCost, Michael Greenwood, Jason Hattrick-Simpers
High-entropy materials (HEMs) have recently emerged as a significant category of materials, of- fering highly tunable properties. However, the scarcity of HEM data in existing density functional theory (DFT) databases, primarily due to computational
Matthew West, Georges Pavlidis, Robert Montgomery, Fabia Farlin Athena, Muhammad Jamil, Andrea Centrone, Samuel Graham, Eric Vogel
… As the demand for computing applications capable of processing large datasets … increases, there is a growing need for new in-memory computing technologies that avoid the von Neumann bottleneck. …
The finite solid-liquid interface width in phase-field models results in non-equilibrium effects, including solute trapping. Prior phase field modeling has shown that this extra degree of freedom, when compared to sharp-interface models, results in solute
Wanting (Lisa) Wang, John W. van de Lindt, Brad Hartman, Harvey Cutler, Jamie Kruse, Therese P. McAllister, Sara Hamideh
The retrofit of wood-frame residential buildings is a relatively effective strategy to mitigate damage caused by windstorms. However, little is known about the effect of modifying building performance for intense events such as a tornado and the subsequent
John A. Schneeloch, Yu Tao, Jaime Fernandez-Baca, Guangyong Xu, Despina Louca
Stacking variations in quasi-two-dimensional materials can have an important influence on material properties, such as changing the topology of the band structure. Unfortunately, the weakness of van der Waals interactions makes it difficult to compute the
Daniel P. Cole, Frank Gardea, Todd C. Henry, Jonathan Seppala, Edward Garboczi, Kalman D. Migler, Christopher M. Shumeyko, Jeffery R. Westrich, Sara Orski, Jeffery L. Gair
Material extrusion (MatEx) is finding increasing applications in additive manufacturing of thermoplastics due to the ease of use and the ability to process disparate polymers. Since part strength is anisotropic and frequently deviates negatively with
Jack F. Douglas, Hao Zhang, Xinyi Wang, Alexandros Chremos
Crystalline materials at elevated temperatures and pressures can exhibit properties more reminiscent of simple liquids than ideal crystalline materials, an attribute making these materials useful in diverse applications. Superionic crystalline materials
… because they can be used for quantum communication, computing and interferometry. In their experiment, Asavanant … a necessary ingredient for continuous variable quantum computing. [1] Schrödinger, E. Die gegenwartige Situation in …
Bryan Barnes, Hui Zhou, Mark-Alexander Henn, Martin Sohn, Richard M. Silver
The sizes of non-negligible defects in the patterning of a semiconductor device continue to decrease as the dimensions for these devices are reduced. These "killer defects" disrupt the performance of the device and must be adequately controlled during
Filmon Habte, Arindam Chowdhury, DongHun Yeo, Emil Simiu
Estimates of wind effects on rigid buildings by database-assisted design (DAD) methods can be far more accurate than those based on information available in standards. An upgraded version of DAD is presented that streamlines the wind engineering/structural
Kevin Fischer, Phil Rosche, Asa Trainer, Allison Barnard Feeney, Thomas D. Hedberg Jr.
To achieve industry's vision of the Model-Based Enterprise (MBE), the MBE strategy must include model-centric data interoperability for design to manufacturing and quality in the supply chain. The Model-Based Definition (MBD) is created by the OEM using
Asha K. Nurse, Sam R. Coriell, Geoffrey B. McFadden
We consider the equilibrium and stability of rotating axisymmetric fluid drops by appealing to a variational principle that characterizes the equilibria as stationary states of a functional containing surface energy and rotational energy contributions
Eric P. Whitenton, April L. Cooke, Jarred Heigel, Ivan Arriola Aldamiz
Process models, including finite element modeling simulations, are important for optimizing the metal cutting process, allowing industry to make parts faster, better, and at less cost. Measurements of the process can be used to improve and verify the
Microgravity experiments and computations have been conducted to elucidate stabilization and extinguishment mechanisms of methane diffusion flames, in the cup-burner configuration, with CO 2 added gradually to a coflowing air or oxygen-enriched stream. The