Results 61 to 70 of about 1,420,872 (289)

Productivity Formula of Horizontal Well in Low-Permeability Gas Reservoir considering Multiple Factors

Geofluids, 2023
For horizontal well in low-permeability gas reservoir, the effects of threshold pressure gradient, stress sensitivity, and gas slippage have significant impacts on the well productivity.
Yan Feng, Mingqiu Li, Qingyuan Deng, Peng Yu, Xiuqing Li, Xi Yang   +5 more
doaj   +1 more source

Data‐Driven SuStaIn Model of Disability Progression in Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine whether ordinal Subtype and Stage Inference (SuStaIn) applied to routine ALSFRS‐R item scores can identify reproducible disability progression patterns in amyotrophic lateral sclerosis (ALS) and provide clinically meaningful staging.
Giammarco Milella, Veria Vacchiano, Vittorio Velucci, Stefano Zoccolella, Rocco Liguori, Giovanni Defazio   +5 more
wiley   +1 more source

Detection of Anticompetitive Horizontal Mergers [PDF]

The paper develops a four-step framework to detect anticompetitive horizontal mergers. In the first step, an estimate of the impact of the merger on the market price needs to be derived.
Hüschelrath, Kai
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Nonlinear cross Gramians and gradient systems [PDF]

, 2007
We study the notion of cross Gramians for non-linear gradient systems, using the characterization in terms of prolongation and gradient extension associated to the system.
Jacquelien M. A. Scherpen, Ionescu, T. C.,, Scherpen, J. M. A., Ionescu, T. C., Tudor C. Ionescu, Scherpen, J. M. A.,   +5 more
core   +2 more sources

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane, Salama Makni, Mourad Kchaou, Ahmed El Hajjaji   +3 more
wiley   +1 more source

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

Study of a Horizontal Gradient Furnace for Vapour Growth

Mapana - Journal of Sciences, 2008
A horizontal linear gradient two zone furnace has been employed to grow single crystals of semiconducting compounds by physical vapour deposition (PVD) method. It was calibrated for various trials including, series and parallel combination of coils, and set temperatures.
Reshmi P. M., Chandrasekharan K. A., Kunjomana A. G.   +2 more
openaire   +2 more sources

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Gradient horizontal de fonctions polynomiales

, 2007
Dans ce travail, nous étudions un type de champs de vecteurs plus large que les champs de gradient polynomiaux, dans Ie cas d'une distribution polynomiale de codimension un satisfaisant la condition de Hormander, ces champs de vecteurs sont appelés ...
ORRO, Patrice, DINH, Si Tiep, KURDYKA, Krzysztof   +2 more
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Understanding Nwafor Orizu: selected reviews and commentaries on (liberty or chains Africa must be) [PDF]

, 1998
Opening address by the chairman, His Excellency Alhaji Shehu Shagari, at the launching of the book "Liberty or Chains - Africa Must Be" by Rt. Hon. Dr. Prince A. A. Nwafor Orizu on Thursday April 24, 1997; review by His Excellency Chief Dr.
Horizontal pubushers
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