Keyword: Splines

Briefs: Information Technology
Missing Value Imputation in Astronomical Time-Series Data

A document describes a solution to missing flux values in time-domain optical and radio astronomical survey data that form “light curves.” The technique incorporates a priori astronomical knowledge into a missing value imputation technique. It is assumed that missing values in...

Application Briefs: Robotics, Automation & Control

Pricing pressures, intense competition, and strict regulatory demands are challenging scientists and researchers in the fast-growing, highly-regulated pharmaceutical,...

Articles: Robotics, Automation & Control

Students trained in classic mechanical engineering are taught to construct a system using conventional mechanical components to convert rotary into linear motion. Converting rotary to linear motion can be...

Briefs: Electronics & Computers

Smooth phase interpolated keying (SPIK) is an improved method of computing smooth phase-modulation waveforms for radio communication systems that convey digital information. SPIK is applicable to a variety of...

Briefs: Manufacturing & Prototyping

A counterrotating-shoulder mechanism has been proposed as an alternative to the mechanism and fixtures used in conventional friction stir welding. The mechanism would internally...

Briefs: Information Technology

The Hilbert-Huang transform (HHT) is part of the mathematical basis of a method of calculating a stability spectrum. This method can be regarded as an extended and improved version of a prior...

Briefs: Software
General Flow-Solver Code for Turbomachinery Applications

Phantom is a computer code intended primarily for real-fluid turbomachinery problems. It is based on Corsair, an ideal-gas turbomachinery code, developed by the same authors, which evolved from the ROTOR codes from NASA Ames. Phantom is applicable to real and ideal fluids, both...

Briefs: Motion Control

A proposed robotic apparatus for underground exploration would propel itself downward in a percussive manner reminiscent of a jackhammer, pile driver, or hammer-and-chisel combination....

Briefs: Mechanical & Fluid Systems
Mechanical Breakaway Clutch

A proposed mechanical breakaway clutch would not rely on friction. The clutch would be useful in environments in which the inherent inaccuracies of friction would make friction clutches erratic. The proposed clutch would comprise two primary assemblies: a driver assembly and a slip flange. The slip flange would be...

Briefs: Information Technology

A recently developed theoretical and computational method is especially well suited for analyzing time-series data that represent nonstationary and nonlinear processes. The method stands in...

Briefs: Materials

TRiangular Unstructured Mesh generator by Point insEr Tion (TRUMPET) is a computer program that generates meshes that are composed of triangular cells and are bounded by complex...

Briefs: Mechanical & Fluid Systems

Harmonic drive gearing is recognized by designers for its zero backlash, high gear ratios, and compact design features. A recent development by HD Systems incorporates a large hollow shaft...

Trending Stories

Special Reports: Nanotechnology

Medical Robotics - April 2022

Articles: Data Acquisition

Is The Future of Automation in the Manufacturing Sector Already Here?

Technology Leaders: Materials

The Heat Is On: A Guide to Specifying Insulation Materials

NASA Spinoff: Manufacturing & Prototyping

A Coating That Cools And Cuts Costs

Articles: Test & Measurement

Venting for EV Battery Packs

Briefs: Mechanical & Fluid Systems

Touchdown Ball-Bearing System for Magnetic Bearings