Now showing items 1-10 of 143
Bond-Slip Monitoring of Concrete Structures Using Smart Sensors—A Review
Concrete structures with various reinforcements, such as steel bars, composite material tendons, and recently steel plates, are commonly used in civil infrastructures. When an external force overcomes the strength of the ...
Virginia Tech Engineer, Winter 2019
(Virginia Tech, 2019-02)
Virginia Tech Engineer is the magazine of the College of Engineering at Virginia Tech.
Double helical conformation and extreme rigidity in a rodlike polyelectrolyte
(Nature Publishing Group, 2019-02-18)
The ubiquitous biomacromolecule DNA has an axial rigidity persistence length of ~50 nm, driven by its elegant double helical structure. While double and multiple helix structures appear widely in nature, only rarely are ...
Microfluidic reactors for advancing the MS analysis of fast biological responses
(Nature Publishing Group, 2019-02-11)
The response of cells to physical or chemical stimuli is complex, unfolding on time-scales from seconds to days, with or without de novo protein synthesis, and involving signaling processes that are transient or sustained. ...
Differentiating between cancer and normal tissue samples using multi-hit combinations of genetic mutations
(Nature Publishing Group, 2019-01-30)
Cancer is known to result from a combination of a small number of genetic defects. However, the specific combinations of mutations responsible for the vast majority of cancers have not been identified. Current computational ...
Low-cost sensor-integrated 3D-printed personalized prosthetic hands for children with amniotic band syndrome: A case study in sensing pressure distribution on an anatomical human-machine interface (AHMI) using 3D-printed conformal electrode arrays
Interfacing anatomically conformal electronic components, such as sensors, with biology is central to the creation of next-generation wearable systems for health care and human augmentation applications. Thus, there is a ...
A Novel Decentralized Game-Theoretic Adaptive Traffic Signal Controller: Large-Scale Testing
This paper presents a novel de-centralized flexible phasing scheme, cycle-free, adaptive traffic signal controller using a Nash bargaining game-theoretic framework. The Nash bargaining algorithm optimizes the traffic signal ...
Probabilistic Seismic Demand Analysis of a Bridge with Unbonded, Post-Tensioned, Concrete-Filled, Fiber-Reinforced Polymer Tube Columns
Ground motions at sites close to a fault are sometimes affected by forward directivity, where the rupture energy arrives at the site in a form of a very short duration pulse. These pulses impose a heavy demand on structures ...
A Multi-Path Compensation Method for Ranging in Wearable Ultrasonic Sensor Networks for Human Gait Analysis
Gait analysis in unrestrained environments can be done with a single wearable ultrasonic sensor node on the lower limb and four fixed anchor nodes. The accuracy demanded by such systems is very high. Chirp signals can ...
Investigating the Functions of Particles in Packed Aggregate Blend using a Discrete Element Method
In asphalt mixture, aggregates account for up to 90% of the total volume and play an important role in the mechanical characteristics of asphalt mixture. The proportions of fine and coarse aggregates in gradation, as well ...