Results 111 to 120 of about 878,789 (291)

Shallow grooves in journal improve air bearing performance [PDF]

open access: yes, 1968
Bearing designs, which shape the surface to create artificial fluid-film wedges in the absence of any applied radial load, generate radial restoring forces to keep journals from whirling.
Anderson, W. J.   +2 more
core   +1 more source

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Textbooks focus on sacrifice and martyrdom: the case of general education period [PDF]

open access: yesتربیت اسلامی, 2014
The main of this research is to shed light on the extent the textbooks in generaleducation focus on the concepts of sacrifice and martyrdom. The methodology usedin this study is descriptive and content analysis in an applied approach. The sampleconsisted
Raza Jafari Harandi, Ali Yazdkhasti
doaj  

The Cult of Theoi: Economic Uncertainty and Religion [PDF]

open access: yes
Sacrifices to deities occur in nearly all known religions. In this paper, we report on our attempts to elicit this type of religious behaviour towards "Theoi" in the laboratory. The theory we test is that, when faced with uncertainty, individuals attempt
Barón, Juan D., Frijters, Paul
core  

Mapping Nanoscale Buckling in Atomically Thin Cr2Ge2Te6

open access: yesAdvanced Functional Materials, EarlyView.
Atomic‐resolution STEM is used to resolve nanoscale buckling in monolayer Cr2Ge2Te₆. A noise‐robust image analysis reconstructs three‐dimensional lattice distortions from single plan‐view images, revealing pronounced defect‐driven nm‐scale out‐of‐plane buckling.
Amy Carl   +20 more
wiley   +1 more source

Encouraging Privacy-Aware Smartphone App Installation: Finding out what the Technically-Adept Do [PDF]

open access: yes, 2016
Smartphone apps can harvest very personal details from the phone with ease. This is a particular privacy concern. Unthinking installation of untrustworthy apps constitutes risky behaviour.
El Hanafi, Michael   +5 more
core   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

open access: yesAdvanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono   +6 more
wiley   +1 more source

Equal Sacrifice and Fair Burden Sharing in a Public Goods Economy [PDF]

open access: yes
Applying a willingness to pay approach known from contingent valuation in environmental economics, we develop an ordinally based measure for the size of individual sacrifice that is connected with an agent's contribution to a public good.
Wolfgang Buchholz, Wolfgang Peters
core  

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

open access: yesAdvanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles   +16 more
wiley   +1 more source

Aesthetics of Death and Ethics of Retribution: Russian Political Terrorism of the Early XX Century in a Modern Context

open access: yesУправленческое консультирование, 2018
This article discusses the causes, roots and most characteristic features of the phenomenon of terrorism in the Russian political extremism material of the early twentieth century. It focuses on the psychology of terror and social awareness, to accept or
Lidia Ivanovna Shishkina
doaj  

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