Results 21 to 30 of about 858,752 (345)

Ownership-dependent mating tactics of minor males of the beetle Librodor japonicus (Nitidulidae) with intra-sexual dimorphism of mandibles [PDF]

open access: yes, 2007
Intra-sexual dimorphism is found in the weapons of many male beetles. Different behavioral tactics to access females between major and minor males, which adopt fighting and alternative tactics, respectively, are thought to maintain the male dimorphism ...
AP Bridge   +33 more
core   +1 more source

An underwater discharge shockwave separation method based on minimum-phase cepstrum

open access: yesAIP Advances, 2021
Underwater discharge sound sources are widely utilized. The acoustic signals generated by underwater discharge consist of shock waves and bubble pulsations.
Liang Qiao   +4 more
doaj   +1 more source

Stable microstructure in a nanocrystalline copper–tantalum alloy during shock loading

open access: yesCommunications Materials, 2020
Shock loading of materials alters the microstructure and considerably degrades mechanical performance. Here, shock loading of a nanocrystalline Cu–Ta alloy is found to induce minor changes to microstructure and mechanical performance, attributed to the ...
B. Chad Hornbuckle   +10 more
doaj   +1 more source

Image enhancement for underwater range-gated image with multi-slice integration method

open access: yesAIP Advances, 2022
Active illumination underwater brings the backscatter problem. The traditional pulsed laser range-gated imaging (PLRGI) system uses a small gate width to suppress most of the backscattered light.
Hongsheng Lin   +4 more
doaj   +1 more source

Pakistan’s Nuclear Weapons Program and Implications for US National Security. [PDF]

open access: yes, 2010
This article analyzes Pakistan’s nuclear weapons program and the characteristics of the environment in which the program is nested. These characteristics include Pakistan’s history of internal and external instability; nuclear saber rattling during ...
Tkacik, Michael
core   +2 more sources

Real-Time Energy Management Strategy of Multi-Wheel Electric Drive Vehicles With Load Power Prediction Function

open access: yesIEEE Access, 2021
The lack of a load power prediction function in conventional multi-wheel electric drive vehicles leads to lags in control action. To address this issue, we developed a real-time energy management strategy with improved load power prediction accuracy ...
Luming Chen   +3 more
doaj   +1 more source

Characterization of a Nanosized Iron Powder by Comparative Methods

open access: yesKONA Powder and Particle Journal, 2014
Fe nanopowder, derived from microwave plasma synthesis (Materials Modifications Inc., Fairfax, VA), was obtained and characterized for particle size and size distribution.
L.J. Kecskes   +5 more
doaj   +1 more source

Postcard from a Canadian Supporter to Geraldine Ferraro [PDF]

open access: yes, 1984
Postcard from a Canadian supporter to Geraldine Ferraro. Author is concerned about nuclear weapons. Postcard has handwritten notes.https://ir.lawnet.fordham.edu/vice_presidential_campaign_correspondence_1984_international/1227/thumbnail ...
Ferraro, Geraldine
core   +3 more sources

Weapons of Math Destruction: How Big Data Increases Inequality and Threatens Democracy

open access: yesVikalpa The Journal for Decision Makers, 2016
A former Wall Street quant sounds an alarm on the mathematical models that pervade modern life and threaten to rip apart our social fabricWe live in the age of the algorithm. Increasingly, the decisions that affect our liveswhere we go to school, whether
Shikha Verma
semanticscholar   +1 more source

Error analysis of cross-shaped magnetic gradient full tensor measurement system

open access: yesAIP Advances, 2020
The structural characteristics of the magnetic gradient full tensor measurement system are important factors affecting the accuracy of the magnetic gradient full tensor measurement.
Lei Xu   +5 more
doaj   +1 more source

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