Results 71 to 80 of about 508,546 (355)

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

On the Origin of the Galaxy Star-Formation-Rate Sequence: Evolution and Scatter [PDF]

, 2010
We use a semi-analytic model for disk galaxies to explore the origin of the time evolution and small scatter of the galaxy SFR sequence -- the tight correlation between star-formation rate (SFR) and stellar mass (M_star).
Aaron A. Dutton, Agertz, Avila Reese, Avishai Dekel, Bell, Bigiel, Birnboim, Birnboim, Blitz, Blitz, Bothwell, Bouwens, Bruzual, Bullock, Bullock, Cattaneo, Chabrier, Cole, Cole, Courteau, Croton, Daddi, Daddi, Daddi, Daddi, Davé, Dekel, Dekel, Dekel, Dekel, Dunkley, Dutton, Dutton, Elbaz, Elmegreen, Elmegreen, Elmegreen, Erb, Firmani, Frank C. Van Den Bosch, Franx, Gao, Garnett, Gonzalez, Hatton, Hopkins, Kauffmann, Kauffmann, Kennicutt, Keres, Krumholz, Lilly, Lotz, Macciò, Macciò, Madau, Maller, Martin, Melbourne, Mo, Murray, Navarro, Navarro, Neistein, Noeske, Noeske, Pannella, Prochaska, Pérez-González, Salim, Schiminovich, Schiminovich, Schmidt, Sharma, Shen, Sobral, Somerville, Somerville, Stark, Sutherland, Tacconi, Tacconi, Tacconi, Van Den, Van Den, Van Den Bosch, Villar, Wechsler, Williams, Wolf, Wong, Wu, Zhao   +92 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

30 kV coaxial vacuum-tight feedthrough for operation at cryogenic temperatures

, 2010
In this paper we describe the technology of building a vacuum-tight high voltage feedthrough which is able to operate at voltages up to 30 kV. The feedthrough has a coaxial structure with a grounded sheath which makes it capable to lead high voltage ...
Badhrees, I., Delaquis, S., Ereditato, A., Janos, S., Kreslo, I., Messina, M., Moser, U., Rossi, B., Zeller, M.   +8 more
core   +1 more source

Outer Regions of the Cluster Gaseous Atmospheres [PDF]

, 1999
We present a systematic study of the hot gas distribution in the outer regions of regular clusters using ROSAT PSPC data. Outside the cooling flow region, the beta-model describes the observed surface brightness closely, but not precisely.
A. Vikhlinin, Bartelmann M., C. Jones, Cavaliere A., Cole S., Ebeling H., Edge A. C., Evrard A. E., Fukazawa Y., Lacey C., Mohr J. J., Navarro J. F., W. Forman, White D. A.   +13 more
core   +2 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Formation mechanism of tight sandstone gas in areas of low hydrocarbon generation intensity: A case study of the Upper Paleozoic in north Tianhuan depression in Ordos Basin, NW China

Petroleum Exploration and Development, 2018
The Upper Paleozoic in the north part of Tianhuan depression in the Ordos Basin, NW China has lower hydrocarbon generation intensity and complex gas-water relationship, the main factors controlling the formation of tight sandstone gas and the ...
Fudong ZHANG, Jun LI, Guoqi WEI, Xinshe LIU, Jianying GUO, Jian LI, Liyong FAN, Yuanqi SHE, Hui GUAN, Shen YANG, Liyan SHAO   +10 more
doaj   +1 more source

Quasi-one-dimensional Bose gases with large scattering length

, 2003
Bose gases confined in highly-elongated harmonic traps are investigated over a wide range of interaction strengths using quantum Monte Carlo techniques. We find that the properties of a Bose gas under tight transverse confinement are well reproduced by a
B. E. Granger, D. Blume, G. E. Astrakharchik, H. T. C. Stoof, J. B. McGuire, M. Girardeau, S. Giorgini   +6 more
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Cellular thermosetting fluorodiepoxide polymers [PDF]

, 1989
Thermosetting fluoropolymer foams are made by mixing fluid form thermosetting fluoropolymer components having a substantial fluorine content, placing the mixture in a pressure tight chamber, filling the chamber with a gas, at relatively low pressure ...
Lee, Sheng Y.
core   +1 more source