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Projects/Programs

Topic Area
Displaying 1401 - 1425 of 1644

Software Assurance Metrics And Tool Evaluation (SAMATE)

Ongoing
The SAMATE project is an inter-agency project between the U.S. Department of Homeland Security and NIST, and consists of two parts: Development of metrics for the effectiveness of software security assessment (SSA) tools. assess current SSA methods and tools in order to identify deficiencies which

Software and Data Carpentry

Ongoing
Software and Data Carpentry workshops conduced at NIST are designed to teach basic computing and data skills that enable NIST researchers to get more done in less time, while also making it easier to automate and document research workflows. These skills can allow for more rapid and reliable
Software Defined and Virtual Networks

Software Defined Virtual Networks

Ongoing
Background Data networks have enabled extraordinary growth in capabilities such as email, the web, and social media; and today form the technical basis for our information-centric economy [1]. However, current network architectures and processes for technical evolution cannot support the complexity

Software Performance Project

Completed
The mission of the Software Performance project is to strengthen the scientific foundations of software performance measurement ("metrology for IT"). Its goals are: Application: Replace unreliable common practices with rigorously-studied methods grounded in design of experiments Research: Solve
LED examples

Solid-state lighting metrology

Ongoing
Light Emitting Diodes (LEDs) are increasingly being introduced into lighting market, and solid state lighting (SSL) is becoming a reality. But, this new technology still faces many challenges. Lighting consumes a huge amount of energy, currently 22% of all electricity consumed in the U.S. White LED
word Thermodynamics on a puzzle pieces

Solvation Thermodynamics

Ongoing
Solvation thermodynamics data are essential in the characterization and interpretation of any process carried out in the liquid phase. The data have application in the study of biochemical processes such as protein folding and protein-protein association in aqueous fluids and are useful as
QIT detector

Sources, detectors and metrology

Ongoing
Detectors Detectors that can register individual photons are key to applications in quantum information, metrology, biology, and remote sensing, each having its own distinct detection requirements. In many ways, a single-photon detector is the device that spans the quantum-to-classical divide
Measurement of the air velocity profile exiting a section of the rooftop air-conditioning unit's heat exchanger

Space-Conditioning Options for High-Performance Buildings

Ongoing
Objective Develop and deploy the measurement science to support the implementation of cost-effective space-conditioning options for high-performance buildings. Technical Idea The unique aspects of high-efficiency homes require new solutions for space-conditioning equipment. Because of tighter

Speaker and Language Recognition

Ongoing
Current Speaker and Language Recognition technology activities: Speaker Recognition Evaluation series: (1996-) A biennial NIST evaluation of fully automated text-independent speaker recognition technology. View the 2012 NIST SRE report. Human Assisted Speaker Recognition Evaluation series: (2010- )

Special Functions

Ongoing
Special function evaluation is among the more venerable problems of numerical mathematics and remains a staple for engineers, physicists, and scientific computation. What is more, the need for detailed numerical evaluations grows steadily as new quantitative theories are developed for an increasing
reflector

Spectral Reflectance and Transmittance

Ongoing
NIST serves as the nation's primary source for spectral reflectance and transmittance measurements from 250 nm to 2500 nm. Our reflectance and transmittance measurements support the measurement infrastructure of communities involved in optics, photonics, color technology, instrument manufacturing
spectral responsivity lab

Spectral responsivity measurement

Ongoing
The spectral responsivities of typical photodiodes that are used in the ultraviolet, visible, and near-infrared and calibrated by the SCFs are shown below. **Any commercial equipment, instruments, or materials mentioned are identified to foster understanding. Such identification does not
spectrophotometric processes illustration

Spectrophotometry

Ongoing
NIST uses spectrophotometric techniques to measure the optical properties of materials for dissemination of national measurement scales to its stakeholders and advancing the development of standards, measurement methods, and modeling capabilities. The beneficiaries of these activities include the

Spectroradiometry of sources

Ongoing
The spectral radiance sources in the form of tungsten-strip lamps and integrating-sphere sources are calibrated in the Facility for Spectroradiometric Calibrations (FASCAL). The measurements are performed by the use of a prism-grating double monochromator whose spectral radiance responsivity is
Individual quantum center creation, characterization, quantum control, efficient collection and readout.

Spectroscopy and Application of Solid-State Quantum Centers

Ongoing
Quantum color centers in wide-bandgap semiconductors have spin and optical degrees of freedom, which can be leveraged for applications such as sensing and single-photon generation. In materials like diamond and silicon carbide, long spin lifetimes and quantum coherence times enable sensitive
AnechoicChamber

Spectrum Coexistence Metrology

Ongoing
The overarching goal of the Coexistence Project is to support the development, evaluation, and optimization of spectrum sharing techniques. These techniques include methods to model, simulate, and physically measure the ability of wireless communications systems to maintain their functional
Spectrum Sensing and Noise

Spectrum Sensing and Noise

Ongoing
Reports in the NIST Technical Notes series were extensive measurements of radiated noise. Researchers also made key early contributions to standardizing guided-wave noise measurements in microwave systems. These contributions continue to underpin our ongoing work, but basic applications and hardware
NBIT

Spectrum Sharing & Sensing

Ongoing
The presence of large numbers of licensed and unlicensed spectrum users has already increased the environmental noise floor well above conventional thermal noise levels. Nevertheless, a quantitative assessment of the existing noise floor in today’s communication world is not yet available. As a

Spectrum Tracking in Power Grid Systems

Completed
The increasing deployment of residential renewables and an extensive use of nonlinear devices in the distribution system can produce undesirable harmonic distortions. Such distortions can severely impact phase/frequency estimation in power systems, especially distributed grid systems. For grid

Speech Analytics

Ongoing
Current speech analytics work: OpenSAT is a new speech analytic evaluation series designed to include developers from multiple speech analytic technologies where common datasets are used in NIST evaluations. The goal is to bring together developers focused on different speech analytic tasks to

Spinor Condensates and Ultracold Collisions

Ongoing
A Bose-Einstein condensate (BEC) collapses the wavefunctions of many particles in to a single quantum state. In a spinor BEC the atoms can be in a superposition of internal quantum states. Thus, a BEC of spin-1 particles, like the F = 1 ground state of Na atoms, can be thought of as being a single
Schematic of device structure designed to utilize novel spin current generation in a ferromagnet (FM) to achieve electrical switching of a perpendicularly magnetized FM layer

Spin-orbit interaction in devices and quantum materials

Ongoing
The spin degree of freedom can provide a basis for next-generation electronic devices. Spintronic devices typically include materials with magnetic ordering, such as ferromagnets or antiferromagnets. The state of the magnetization influences charge and spin current through an effect known as
Fig. 1. Die containing 285 superparamagnetic tunnel junctions.

Spintronics for Neuromorphic Computing

Ongoing
Magnetic tunnel junctions (see Fig. 1) consist of two thin films of ferromagnetic material separated by a few atomic layers of an insulating material. The insulator is so thin that electrons can tunnel quantum mechanically through it. The rate at which the electrons tunnel is affected by the

Springback

Ongoing
Springback, or the elastic change in shape when a part is released from the manufacturing process, has been a problem for decades and accounts for a significant fraction of the expense that the US auto industry spends each year trying out die sets for new body designs. The inability to predict the
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