Results 151 to 160 of about 12,308 (240)

Approximation algorithms for discrete polynomial optimization [PDF]

open access: yes, 2013
Li, Zhening, He, Simai, Zhang, Shuzhong
core   +1 more source

Do Single‐Sex STEM Programs Have Merit? If So, for Whom, on What Measures?

open access: yesScience Education, EarlyView.
ABSTRACT Single‐sex STEM programs—defined here as voluntary, gender‐segregated extracurricular or supplemental activities (e.g., summer camps, workshops, robotics clubs, internships, or citizen science initiatives)—have experienced heightened popularity and scrutiny amid efforts to increase diversity in STEM fields.
Chen Chen   +4 more
wiley   +1 more source

Flying high or crashing down: Pre‐entry knowledge, post‐entry learning, and the distribution of startup performance

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary We examine variation in high‐technology startups' performance based on founders' pre‐entry experiences by developing a formal model and using confidential employee‐employer linked microdata from the United States to examine the empirical consistency of the model propositions.
Rajshree Agarwal   +3 more
wiley   +1 more source

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

open access: yesSmall, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva   +8 more
wiley   +1 more source

Balanced state-space representations: a polynomial algebraic approach

open access: yes
We show how to compute a minimal Riccati-balanced state map and a minimal Riccati-balanced state space representation starting from an image representation of a strictly dissipative system.
Rapisarda, Paolo, Trentelman, Harry L.
core  

HWTS 50 Tool Steel Tailored for Laser Powder Bed Fusion: Sliding Wear of Bare Surfaces and Nitriding Response in Comparison with 18Ni300 and AISI H13

open access: yessteel research international, EarlyView.
This work investigates the wear resistance and nitriding behavior of PBF‐LB/M‐processed Osprey HWTS 50, a lean hot work tool steel. Three heat treatment conditions are compared to conventional wrought H13, H11, and PBF‐LB/M 18Ni300. The study highlights HWTS 50's enhanced nitrogen diffusion, deeper nitriding hardness depth, and comparable or improved ...
Jonathan Hann   +6 more
wiley   +1 more source

Parametric action of homomorphic image of modular group and it's application in image encryption. [PDF]

open access: yesSci Rep
Rafiq A   +7 more
europepmc   +1 more source

In Situ Investigation of Microstructure Evolution and Stress Generation During Low‐Pressure Carburizing and Quenching by Means of Synchrotron X‐Ray Diffraction

open access: yessteel research international, EarlyView.
This study uses in situ synchrotron X‐ray diffraction at the German Electron Synchrotron to analyze low‐pressure carburizing (LPC) in steels. The findings reveal surface carbon saturation and carbide formation kinetics, and phase‐specific stress development during quenching. The results show carbide kinetics depend on steel grade and size, while stress
Ogün Baris Tapar   +6 more
wiley   +1 more source

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