Search Publications

NIST Authors in Bold

Displaying 8126 - 8150 of 74192

Four Principles of Explainable Artificial Intelligence (Draft)

August 18, 2020

Author(s)

P Phillips, Carina Hahn, Peter Fontana, David A. Broniatowski, Mark A. Przybocki

We introduce four principles for explainable artificial intelligence (AI) that comprise the fundamental properties for explainable AI systems. They were developed to encompass the multidisciplinary nature of explainable AI, including the fields of computer

Recommendation for Key-Derivation Methods in Key-Establishment Schemes

August 18, 2020

Author(s)

Elaine B. Barker, Lidong Chen, Richard Davis

This Recommendation specifies techniques for the derivation of keying material from a shared secret established during a key-establishment scheme defined in NIST Special Publications 800-56A or 800-56B.

ARES: Automated Risk Estimation in Smart Sensor Environments

August 17, 2020

Author(s)

Athanasios Dimitriadis, Jose L. Flores, Boonserm Kulvatunyou, Nenad Ivezic, Ioannis Mavridis

Industry 4.0 adoption demands integrability, interoperability, composability, and security. Currently, integrability, interoperability and composability are addressed by next-generation approaches for enterprise systems integration such as model-based

Predicting Sorbent-Air Partition Coefficients for Terpenoids at Multiple Temperatures

August 17, 2020

Author(s)

Kavita M. Jeerage, Elijah Holland

Partition coefficients describe the relative concentration of a chemical equilibrated between two phases. In the design of air samplers, the sorbent-air partition coefficient is a critical parameter, as is the ability to extrapolate or predict partitioning

Role of Uncertainty in the Durability of Composite Material Systems

August 17, 2020

Author(s)

Jeffrey T. Fong, Nathanael A. Heckert, James J. Filliben

This paper is a chapter invited by the editor of a book to be published by Elsevier in 2020. The title of the book is "Durability of Composite Systems," and the editor is Prof. Kenneth Reifsnider, N.A.E., University of Texas at Arlington, Arlington, TX, U

Temperature-induced heteroaggregation in polydisperse portlandite suspensions

August 17, 2020

Author(s)

Edward Garboczi, Gaurav Sant, Iman Mehdipour, Narayanan Neithalath, Mathieu Bauchy, Samanvaya Srivastava, Sharu Bhagavathi Kandy

Temperature is well-known to affect the aggregation behavior of colloidal suspensions. This paper elucidates the temperature dependence of the rheology of portlandite (calcium hydroxide: Ca(OH)2) suspensions that feature a high ionic strength and a pH

3D BUILD MELT POOL PREDICTIVE MODELING FOR POWDER BED FUSION ADDITIVE MANUFACTURING

August 16, 2020

Author(s)

Zhuo Yang, Yan Lu, Ho Yeung, Sundar Krishnamurty

Melt pool size is a critical intermediate measure that reflects the outcome of a laser powder bed fusion process setting. Reliable melt pool predictions prior to builds can help users to evaluate potential part defects such as lack of fusion and over

Accelerated Weathering Parameters for Some Aromatic Engineering Thermoplastics. Part 2: Polycarbonate copolymers, polyarylate and ABS

August 16, 2020

Author(s)

Li Piin Sung, James E. Pickett, Olga Kuvshinnikova, Brett Ermi

Understanding the responses of materials to environmental variables is essential for performing meaningful accelerated weathering and service life prediction. Samples of polycarbonate-b-resorcinol polyarylate copolymer (RPA), poly(acrylonitrile-co

Hybrid Modeling Approach for Melt Pool Prediction in Laser Powder Bed Fusion Additive Manufacturing

August 16, 2020

Author(s)

Tesfaye M. Moges, Zhuo Yang, Kevontrez K. Jones, Shaw C. Feng, Paul W. Witherell, Yan Lu

Multi-scale multi-physics computational models are a promising tool to provide detailed insights to understand the process-structure-property-performance relationships in additive manufacturing (AM) processes. To take advantage of the strengths of both

Linking Performance Data and Geospatial Information of Manufacturing Assets through Standard Representations

August 16, 2020

Author(s)

Aaron Hanke, Teodor Vernica, William Z. Bernstein

Interoperability across emerging visualization modalities, including augmented reality (AR) and virtual reality (VR), remains a challenge with respect to industrial applications. One critical issue relates to the lack of standard approaches for

MEASURED DATA ALIGNMENTS FOR MONITORING METAL ADDITIVE MANUFACTURING PROCESSES USING LASER POWDER BED FUSION METHODS

August 16, 2020

Author(s)

Shaw C. Feng, Yan Lu, Albert W. Jones

The number and types of measurement devices used for monitoring and controlling laser powder bed fusion (LPBF) processes and inspecting the resulting AM metal parts have increased rapidly in recent years. The variety of the data collected by such devices

Transient Laser Energy Absorption, Co-axial Melt Pool Monitoring, and Relationship to Melt Pool Morphology

August 16, 2020

Author(s)

Brandon M. Lane, Ivan Zhirnov, Sergey Mekhontsev, Steven E. Grantham, Richard E. Ricker, Santosh Rauniyar, Kevin Chou

Many recent and ongoing studies into the complex melt pool physics during laser powder bed fusion (LPBF) metal additive manufacturing (AM) process measure various aspects of energy transport surrounding the laser-induced melt pool, with focus on laser

Feshbach resonances in p-wave three-body recombination within Fermi-Fermimixtures of open-shell 6-Li and closed-shell 173-Yb atoms

August 14, 2020

Author(s)

Aliana Green, Hui Li, Jun Hui See Toh, Xinxin Tang, Katherine McCormick, Ming Li, Eite Tiesinga, Svetlana Kotochigova, Subhadeep Gupta

We report on observations and modeling of interspecies magnetic Feshbach resonances in dilute ultracold mixtures of open-shell alkali-metal 6 Li and closed-shell 173 Yb atoms with temperatures just above quantum degeneracy for both fermionic species

High-brightness lasing at submicrometer enabled by droop-free fin light-emitting diodes (LEDs)

August 14, 2020

Author(s)

Robin P. Hansen, Amit K. Agrawal, Michael Shur, Jerry Tersoff, Babak Nikoobakht, Yuqin Zong

"Efficiency droop," i.e., a decline in brightness of light-emitting diodes (LEDs) at high electrical currents, limits the performance of all commercial LEDs and has limited the output power of submicrometer LEDs and lasers to nanowatts. We present a fin p

A Toolbox for Isophase-Curvature Guided Computation of Metrology Holograms

August 13, 2020

Author(s)

Ulf Griesmann, Johannes A. Soons, Gufran S. Khan

We describe the algorithmic foundations of an open-source numerical toolbox, written in the Octave language, for the creation of computer-generated binary and multi-level holograms used in interferometric form error measurements of complex aspheric and

Enriching Standards-Based Digital Thread by Fusing As-Designed and As-Inspected Data Using Ontologies

August 13, 2020

Author(s)

Soonjo Kwon, William Z. Bernstein, Laetitia V. Monnier, Raphael Barbau

Realizing the digital thread is essential for linking and orchestrating data across the product lifecycle in smart manufacturing. Linking heterogeneous lifecycle data is critical to maintain associativity and traceability in a digital thread. Recently

Mechanical Quantum Sensing in the Search for Dark Matter

August 13, 2020

Author(s)

Jacob Taylor, Gadi Afek, Sunil Bhave, Daniel Carney, Gordan Krnjaic, David Moore, Robinjeet Singh, Cindy Regal, Benjamin M. Brubaker, Andrew Geraci, Jonathan D. Cripe, Sohitri Ghosh, Jack Harris, Anson Hook, Jonathan Kunjummen, Rafael Lang, Li Tongcang, Tongyan Lin, Zhen Liu, Joseph Lykken, Lorenzo Magrini, Jack Manley, Nobuyuki Matsumoto, Alissa Monte, Fernando Monteiro, Thomas Purdy, C. J. Riedel, Swati Singh, Kanupriya Sinha, Juehang Qin, Dalziel Wilson, Yue Zhao

Numerous astrophysical and cosmological observations are best explained by the existence of dark matter, a mass density which interacts only very weakly with visible, baryonic matter. Searching for the extremely weak signals produced by this dark matter

Aqueous Nanofluids Containing Paraffin-filled MWCNTs for Improving Effective Specific Heat and Extinction Coefficient

August 12, 2020

Author(s)

Tae Jong Choi, Sung Hyoun Kim, Seok Pil Jang, Lingnan Lin, Mark A. Kedzierski

Construction of a Dual Protease Column, Subzero (-30 degC) Chromatography System and Multi-channel Precision Temperature Controller for Hydrogen-Deuterium Exchange Mass Spectrometry

August 12, 2020

Author(s)

Jeffrey Hudgens

This tutorial provides mechanical drawings, electrical schematics, parts lists, stereolithography (STL) files for producing three-dimensional (3D)-printed parts, initial graphics exchange specification (IGS) files for automated machining, and instructions

Polycyclic Aromatic Hydrocarbon Structure Index

August 12, 2020

Author(s)

Lane C. Sander, Stephen A. Wise

NIST Special Publication (SP) 922 is an aid in the identification of the chemical structures of polycyclic aromatic hydrocarbons (PAHs). The Structure Index consists of two parts: (1) a cross index of named PAHs listed in alphabetical order and (2)

Termination Switching of Antiferromagnetic Proximity Effect in Topological Insulator

August 12, 2020

Author(s)

Chao-Yao Yang, Lei Pan, Alexander Grutter, Haiying Wang, Xiaoyu Che, Qing L. He, Yingying Wu, Dustin A. Gilbert, Padraic Shafer, Elke Arenholz, Hao Wu, Gen Yin, Peng Deng, Julie Borchers, William D. Ratcliff, Kang L. Wang

The magnetic proximity effect (MPE) allows exchange-coupling of topological insulators (TIs) with magnetically ordered materials to break time-reversal-symmetry and open a gap in the Dirac-cone surface state, with the goal of realizing quantum anomalous

Thermochemical principles of the production of lightweight aggregates from waste coal bottom ash

August 12, 2020

Author(s)

Edward Garboczi, Mohammad Balapour, Rathin Rao, Sabrina Spatari, Grace Hsuan, Peter Billen

Manufacturing lightweight aggregate (LWA) (i.e., porous ceramics) by means of a sintering technique requires a delicate balance among three conditions: (i) forming a sufficient amount of molten liquid phase during sintering, (ii) reaching an appropriate

The Impact and Fate of Graphene Oxide in Graphene Oxide/Polymer Nanocomposites Exposed to Ultraviolet Irradiation

August 11, 2020

Author(s)

David G. Goodwin, Trinny Lai, Yadong Lyu, Chen Yuan Lu, Alejandro Campos, Vytautas Reipa, Tinh Nguyen, Li Piin Sung

Ultraviolet (UV) radiation, heat and moisture can lead to polymer degradation outdoors but the effect of graphene oxide (GO) nanofiller incorporation on this process is unknown. Since GO can improve the mechanical, barrier, and thermal properties of a

Towards Measurement of Advanced Mobile Manipulator Performance for Assembly Applications

August 11, 2020

Author(s)

Roger V. Bostelman, YaShian Li-Baboud, Soocheol Yoon, Mili Shah, Omar Y. Aboul-Enein

Advanced mobile manipulators offer the manufacturing industry the potential of a highly flexible system to perform precision assembly tasks where the environment and the system are subject to uncertainties. Developing precision performance measurement

Ultrafast spectroscopy of biliverdin dimethyl ester in solution: pathways of excited-state depopulation

August 11, 2020

Author(s)

Yangyi Liu, Zhuang Chen, Xueli Wang, Simin Cao, Jianhua Xu, Ralph Jimenez, Jiaquan Chen

Advanced communications
-Open Radio Access Network (Open-RAN)
-Quantum communications
-Spectrum sharing
-Wireless (RF)
Artificial intelligence
-AI measurement and evaluation
-Autonomous systems
--Automated vehicles
--Autonomous laboratories
-Applied AI
-Fundamental AI
-Hardware for AI
-Machine learning
-Trustworthy and responsible AI
Bioscience
-Bioeconomy
--Biological data
-Bioimaging
-Bioinformatics
-Biomanufacturing
-Biomaterials
-Biometrology
-Biosecurity
--Biosurveillance
--Genomic cybersecurity
--Nucleic acid sequence screening
-Cell measurements
-Engineering / synthetic biology
--Biofabrication
--Cell-free systems
--Genome engineering
--Protein engineering
-Gene delivery systems
-Genome editing
-Genomics
-Glycomics
-Metabolomics
-Microbial measurements
-Proteomics
Buildings and Construction
-Building codes and standards
-Building control systems
-Building damage and repair
-Building economics
-Building materials
-Energy efficiency
-Heating, ventilation and air conditioning equipment
-Indoor air quality
-Structural engineering
-Thermal comfort
Chemistry
-Analytical chemistry
-Chemical engineering and processing
-Chemical thermodynamics and chemical properties
-Molecular characterization
-Theoretical chemistry and modeling
-Thermochemical properties
Electronics
-Electromagnetics
-Flexible electronics
-Magnetoelectronics
-Optoelectronics
-Organic electronics
-Semiconductors
-Sensors
-Superconducting electronics
Energy
-Alternative energy
-Conventional energy
-Electric power / smart grid
-Fuels
Environment
-Air / water / soil quality
-Climate Measurements
-Environmental health
-Greenhouse gas measurements
-Marine science
-Sustainability
Fire
-Fire detection
-Fire dynamics and science
-Fire fighting
-Fire modeling
-Fire risk reduction
-Materials flammability
-Structural fire resistance
-Wildland urban interface fire
Forensic Science
-Digital evidence
-Drugs and toxicology
-Firearms and toolmarks
-Forensic biometrics
-Forensic genetics
-Trace evidence
Health
-Biopharmaceuticals
-Cell and gene therapy
-Clinical diagnostics
--Cancer
--Medical imaging
-Food and nutrition
-Human microbiome
-Precision medicine
-Regenerative medicine and advanced therapy
--Flow cytometry
Information technology
-Biometrics
-Cloud computing and virtualization
-Complex systems
-Computational science
-Conformance testing
-Cyber-physical systems
--Smart cities
-Cybersecurity and privacy
--Cryptography
--Cybersecurity education and workforce development
--Cybersecurity measurement
--Identity and access management
--Privacy engineering
--Risk management
--Securing emerging technologies
--Trustworthy networks
--Trustworthy platforms
-Data and informatics
--Human language technology
--Information retrieval
--Natural language processing
-Digital twins
-Federal information processing standards (FIPS)
-Health IT
-Internet of Things (IoT)
-Interoperability testing
-Location based services
-Mobile
-Networking
--Mobile and wireless networking
--Network management and monitoring
--Network modeling and analysis
--Network security and robustness
--Network test and measurement
--Next generation networks
--Protocol design and standardization
--Software defined and virtual networks
-Software research
--Software testing
-Usability and human factors
--Accessibility
-Video analytics
-Virtual / augmented reality
-Visualization research
-Voting systems
Infrastructure
Manufacturing
-Additive manufacturing
-Factory communications
-Factory operations planning and control
-Interoperability in manufacturing
-Machining
-Manufacturing economics
-Manufacturing quality assurance
-Manufacturing systems design and analysis
-Monitoring, diagnostics and prognostics
-Process improvement
-Process measurement and control
-Product data
-Robotics
--Agility and adaptability
--Collaborative robots
--Dexterous grasping
--Manipulation
--Mobility and industrial autonomous vehicles
--Navigation / actuation / control
--Sensing and perception
-Supply chain
-Sustainable manufacturing
-Systems engineering
-Systems integration
-Technology commercialization
Materials
-Ceramics
-Composites
-Concrete / cement
-Materials characterization
--Composition and structure
--Mechanical properties
--Thermal properties
-Metals
-Modeling and computational material science
-Polymers
-Superconductors
Mathematics and statistics
-Experiment design
-Image and signal processing
-Modeling and simulation research
-Numerical methods and software
-Statistical analysis
-Uncertainty quantification
Metrology
-Amount of substance
-Dimensional metrology
-Electrical / electromagnetic metrology
-Flow metrology and rheology
-Force metrology
-Humidity metrology
-Ionizing radiation metrology
-Mass metrology
-Metric
-Optical / photometry / laser metrology
-Pressure and vacuum metrology
-Thermometry metrology
-Time and frequency metrology
-Weights and measures
Nanotechnology
-Nanobiotechnology
-Nanochemistry
-Nanoelectronics
-Nanofabrication / manufacturing
--Lithography
--Self-assembly
-Nanofluidics
-Nanomagnetics
-Nanomaterials
-Nanomechanics
-Nanometrology
-Nanophotonics
-Nanophysics
-Nanoplasmonics
Neutron research
Performance excellence
-Assessment tools and services
-Baldrige award
-Baldrige examiners
-Baldrige Framework and Criteria
-Best practices
-Leadership development
Physics
-Atomic / molecular / quantum
-Biological physics
-Condensed matter
-Electron physics
-Magnetics
-Nuclear physics
-Optical physics and communications
-Quantum information science
-Radiation
-Spectroscopy
-Thermodynamics
-Time and frequency
Public safety
-Chemical / Biological / Radiological / Nuclear / Explosives (CBRNE)
-First responder preparedness
-Law enforcement
-Public safety communications research
-Response robots
Resilience
-Community resilience
--Recovery
--Resilience metrics
-Disaster and failure studies
-Earthquake risk reduction
-Resilience economics
-Resilient materials
-Windstorm impact reduction
Standards
-Accreditation
-Calibration services
-Conformity assessment
-Documentary standards
-Frameworks
-Quality assurance
-Reference data
-Reference instruments
-Reference materials
-Standards education
Technology transfer
Transportation
-Aerospace
-Automotive