Results 51 to 60 of about 285,497 (267)

The meteorology and impacts of the September 2020 Western United States extreme weather event

Weather and Climate Extremes
In September 2020, Western North America was impacted by a highly anomalous meteorological event. Over the Pacific Northwest, strong and dry easterly winds exceeded historically observed values for the time of year and contributed to the rapid spread of ...
Emma N. Russell, Paul C. Loikith, Idowu Ajibade, James M. Done, Chris Lower   +4 more
doaj   +1 more source

Digital-related economy sectors and regional economy disruption

Jurnal Ekonomi dan Bisnis, 2019
While the study of the regional economy and its factors has been well-researched, relatively less is known on the issues for the digital economy sectors affecting the regional economy.
Achmad Nurdany, Anggari Marya Kresnowati
doaj   +1 more source

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

Preconceptional factors associated with very low birthweight delivery in East and West Berlin: a case control study

BMC Public Health, 2002
Background Very low birthweight, i.e. a birthweight < 1500 g, is among the strongest determinants of infant mortality and childhood morbidity. To develop primary prevention approaches to VLBW birth and its sequelae, information is needed on the causes of
Reiher Horst, Stroux Andrea, Dudenhausen Joachim W, Bührer Christoph, Grimmer Ingrid, Halle Horst, Obladen Michael   +6 more
doaj   +1 more source

Variations of surface ozone at Ieodo Ocean Research Station in the East China Sea and the influence of Asian outflows [PDF]

Atmospheric Chemistry and Physics, 2015
Ieodo Ocean Research Station (IORS), a research tower (~ 40 m a.s.l.) for atmospheric and oceanographic observations, is located in the East China Sea (32.07° N, 125.10° E). The IORS is almost equidistant from South Korea, China, and Japan and, therefore,
J. Han, B. Shin, M. Lee, G. Hwang, J. Kim, J. Shim, G. Lee, C. Shim   +7 more
doaj   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

The Niger River Basin Moisture Sources: A Lagrangian Analysis

Atmosphere, 2017
The Niger River basin (NRB) is located in the important climatic region of the African Sahel. In this study we use the Lagrangian tridimensional model FLEXPART v9.0 to identify and characterise the moisture sources for the NRB.
Rogert Sorí, Raquel Nieto, Anita Drumond, Luis Gimeno   +3 more
doaj   +1 more source

Stochastic partial differential equation based modelling of large space-time data sets

, 2016
Increasingly larger data sets of processes in space and time ask for statistical models and methods that can cope with such data. We show that the solution of a stochastic advection-diffusion partial differential equation provides a flexible model class ...
Abramowitz, Anderson, Antolik, Applequist, Banerjee, Banerjee, Bardossy, Bell, Berrocal, Borgman, Bremnes, Bronson, Brooks, Brown, Cameletti, Carter, Coe, Cooley, Cramér, Cressie, Cressie, Cressie, Duan, Dudgeon, Folland, Friederichs, Frühwirth-Schnatter, Fuentes, Furrer, Gelfand, Gelfand, Gelman, Gilks, Gneiting, Gneiting, Gneiting, Gneiting, Gneiting, Golightly, Gottlieb, Haberman, Hamill, Hamill, Handcock, Hastings, Heine, Huang, Hutchinson, Johannesson, Jones, Kleiber, Künsch, Lindgren, Ma, Malmberg, Matheson, Metropolis, Neal, Nychka, Paciorek, Paciorek, Palmer, Pedlosky, Ramrez, Robert, Roberts, Roberts, Roberts, Royle, Rue, Rue, Sampson, Sansó, Sansó, Shumway, Sigrist, Simpson, Sloughter, Smith, Solna, Stein, Stein, Stein, Stein, Stensrud, Steppeler, Stidd, Storvik, Stroud, Tobin, Vecchia, Vivar, Whittle, Whittle, Whittle, Wikle, Wikle, Wikle, Wikle, Wikle, Wikle, Wikle, Wilks, Wilks, Xu, Xu, Yussouf, Zheng   +107 more
core   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

Contribution of mixing to the upward transport across the TTL [PDF]

, 2006
During the second part of the TROCCINOX campaign that took place in Brazil in early 2005, chemical species were measured on-board of the high altitude research aircraft Geophysica (ozone, water vapor, NO, NOy, CH4 and CO) in the altitude range up to 20 ...
Günther, Gebhard, Konopka, Paul, McKenna, Daniel-S., Müller, Rolf, Pan, Laura L., Ravegnani, Fabrizio, Riese, Martin, Santos, Fábio Henrique Silva dos, Schiller, Cornelius, Schlager, Hans, Ulanovsky, Alexey, Viciani, Silvia, Volk, C.-Michael   +12 more
core   +1 more source