Results 21 to 30 of about 959,671 (288)
A General Framework for the Derivation of Regular Expressions [PDF]
, 2012 The aim of this paper is to design a theoretical framework that allows us to perform the computation of regular expression derivatives through a space of generic structures.
Caron, Pascal +2 more
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Kinetic formulation and global existence for the Hall-Magneto-hydrodynamics system [PDF]
, 2011 This paper deals with the derivation and analysis of the the Hall Magneto-Hydrodynamic equations. We first provide a derivation of this system from a two-fluids Euler-Maxwell system for electrons and ions, through a set of scaling limits. We also propose
A. N. Simakov +25 more
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Locally Nilpotent Sets of Derivations [PDF]
, 2020 Let B be an algebra over a field k and let Der(B) be the set of k-derivations from B to B. We define what it means for a subset of Der(B) to be a locally nilpotent set. We prove some basic results about that notion and explore the following questions. Let L be a Lie subalgebra of Der(B); if every element of L is a locally nilpotent derivation then does
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Therapeutics and Clinical Risk Management, 2021 Yuping Du,1 Ping Gu,2 Yu Cui,2 Yi Wang,2 Juanjuan Ran2 1Department of Neurology, the 904th Hospital of Joint Logistic Support Force, PLA, Wuxi, 214044, People’s Republic of China; 2Department of Neurology, Wuxi No.5 People’s Hospital, Wuxi ...
Du Y, Gu P, Cui Y, Wang Y, Ran J
doaj
Generalized derivative and π-derivative for set-valued functions
Information Sciences, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yurilev Chalco-Cano +2 more
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Set-Derivability of Multidimensional Aggregates
, 1999 A common optimization technique in data warehouse environments is the use of materialized aggregates. Aggregate processing becomes complex, if partitions of aggregates or queries are materialized and reused later. Most problematic are the implication problems regarding the restriction predicates.
Albrecht, J. +2 more
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Frontiers in NeurologyBackground and objectiveFutile recanalization (FR) is defined as patients with acute ischemic stroke (AIS) due to large vessel occlusion who still exhibits functional dependence although undergoing successful mechanical thrombectomy (MT).
Cheng-cai Lai +16 more
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European Journal of Medical Research, 2023 Objective To develop and validate a multivariate prediction model to estimate the risk of coronary heart disease (CHD) in middle-aged and elderly people and to provide a feasible method for early screening and diagnosis in middle-aged and elderly CHD ...
Shiyi Tao +6 more
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Seizure Prediction Model in Acute Tramadol Poisoning; a Derivation and Validation study
Archives of Academic Emergency Medicine, 2020 Introduction: Seizure is a common complication of tramadol poisoning and predicting it will help clinicians in preventing seizure and better management of patients. This study aimed to develop and validate a prediction model to assess the risk of seizure
Elham Bazmi +5 more
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Stroke: Vascular and Interventional Neurology, 2023 Background First‐pass effect (FPE), that is, achieving reperfusion with a single thrombectomy device pass, is associated with better clinical outcomes in patients with acute stroke.
Fouzi Bala +22 more
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