Results 51 to 60 of about 127,505,457 (284)

Education in devolved Wales: A story of contradiction

This paper offers a brief ‘state of the nation’ review of education policy in Wales since devolution. Beginning with the exploratory approach to reform in the early days of Senedd Cymru, and ending with Wales’s enigmatic new national curriculum, it ...
Evans, Gareth
core   +4 more sources

Limits to the Hall Effect and Other Nonreciprocal Effects in Three‐Dimensional Metamaterials

Advanced Materials, EarlyView.
Comprehensive and fundamental bounds on nonreciprocal effects in three‐dimensional metamaterials are derived. They reveal that the effective Hall mobility cannot exceed the largest constituent mobility, that, under certain conditions, the Verdet constant cannot be enhanced, and that, for constituents with Hall coefficients of the same sign, the largest
Christian Kern, Graeme W. Milton
wiley   +1 more source

On the analysis of indirect proofs: contradiction and contraposition

, 2016
Proof by contradiction is a very powerful mathematical technique. The aim of the paper is to describe a general model of proof by contradiction and investigate the theoretical foundations of proof by ...
Jourdan, Nicolas, Yevdokimov, Oleksiy
core   +1 more source

Combining Fractional Order Derivative and Spectral Variable Selection for Organic Matter Estimation of Homogeneous Soil Samples by VIS–NIR Spectroscopy

Remote Sensing, 2018
Visible and near-infrared (VIS–NIR) spectroscopy has been extensively applied to estimate soil organic matter (SOM) in the laboratory. However, if field/moist VIS–NIR spectra can be directly applied to estimate SOM, then much of the time and labor would ...
Yongsheng Hong, Yiyun Chen, Lei Yu, Yanfang Liu, Yaolin Liu, Yong Zhang, Yi Liu, Hang Cheng   +7 more
doaj   +1 more source

Nano‐Architected Metallic Metamaterial With Enhanced Fatigue Resistance via Dislocation Starvation

Advanced Materials, EarlyView.
Nanoscale Ni single crystals exhibit remarkable fatigue resistance over an order of magnitude higher than that of bulk single crystals through dislocation starvation. By translating this mechanism into geometric nano‐architecture, nano‐architected Ni single‐crystal metamaterials achieve about twice the fatigue resistance of the bulk, despite their ...
Kota Sugisaka, Yamato Ishizaka, Hiroki Ikeda, Shigeo Arai, Masataka Abe, Yoshitaka Umeno, Hiroyuki Shima, Takashi Sumigawa   +7 more
wiley   +1 more source

Surveillance Capitalism or Democracy? The Death Match of Institutional Orders and the Politics of Knowledge in Our Information Civilization

Organization Theory, 2022
Surveillance capitalism is what happened when US democracy stood down. Two decades later, it fails any reasonable test of responsible global stewardship of digital information and communications.
Shoshana Zuboff
doaj   +1 more source

Review of Inorganic Separator Engineering for Next‐Generation Lithium–Sulfur Batteries: Compromise or Cornerstone?

Advanced Materials, EarlyView.
Inorganic compound‐modified separators transform lithium–sulfur batteries from passive polysulfide confinement to active reaction‐pathway regulation. A Practical Relevance Index (PRI)‐guided framework bridges interfacial chemistry of inorganic separators with practical constraints, establishing unified design principles for scalable, high‐energy ...
Yuting Qin, Tianyi Wang, Xingyu Wang, Kaifu Xu, Yuzhou Wang, Chengyin Wang, Bing Sun, Guoxiu Wang   +7 more
wiley   +1 more source

Taxation of income from international transportation in the Russian Federation: collisions of Article 309 of the Tax Code of the Russian Federation, judicial practice, and legislative perspectives

Jus Strictum
This paper analyzes the legal collisions within Article 309 of the Tax Code of the Russian Federation (RF TC), which governs the taxation of income from international transportation, as well as the issues concerning income sourcing and double taxation ...
Elena V. Chuklova, Nadezhda V. Molchanova   +1 more
doaj   +1 more source

Spatial‐Compatibility‐Assisted Molecular Intercalation in MXenes

Advanced Materials, EarlyView.
This work demonstrates a solvent–free NH4F–mediated route for simultaneous Al removal and molecular intercalation in MXenes. Intercalants are selected by comparing their crystallographic X, Y, and Z dimensions with the MXene interlayer spacing, establishing a spatial‐compatibility criterion that rationalizes guest–host matching and enables predictive ...
Minhao Sheng, Xiaoqing Bin, Xiangyang Liu, Yingji Zhao, Wenxiu Que, Yusuke Asakura, Yusuke Yamauchi   +6 more
wiley   +1 more source

Tamper‐Responsive Physical Unclonable Functions via Graphene‐Interlayered Block Copolymer Random Structures

Advanced Materials, EarlyView.
Self‐invalidating multilayer physical unclonable functions (PUFs) integrate fingerprint‐like metal nanopattern bilayers from block copolymer templates with highly reactive reduced graphene oxide (rGO) interlayers. This tamper‐responsive architecture blocks all unauthorized physical and chemical replication attempts while autonomously deactivating ...
Gyu Hui Jo, Dae Hui Park, Jeong‐Ho Jang, Woo Seok Tack, Jin Man Kim, Hak Ki Yu, Hyeong Min Jin, Jang Hwan Kim   +7 more
wiley   +1 more source