Results 31 to 40 of about 233,711 (284)

Four payment models for the multi-mode resource constrained project scheduling problem with discounted cash flows [PDF]

open access: yes, 2001
In this paper, the multi-mode resource constrained project scheduling problem with discounted cash flows is considered. The objective is the maximization of the net present value of all cash flows.
Sahin, Sule   +5 more
core   +1 more source

Enhanced diffraction by a rectangular grating made of a negative phase--velocity (or negative index) material [PDF]

open access: yes, 2004
The diffraction of electromagnetic plane waves by a rectangular grating formed by discrete steps in the interface of a homogeneous, isotropic, linear, negative phase--velocity (negative index) material with free space is studied using the semi--analytic ...
Akhlesh Lakhtakia   +16 more
core   +2 more sources

Global and local perspectives of gravitationally assisted negative-phase-velocity propagation of electromagnetic waves in vacuum

open access: yes, 2004
Consistently with the Einstein equivalence principle and using an electromagnetic formulation first suggested by Tamm, we show that a local observer cannot observe negative-phase-velocity (NPV) propagation of electromagnetic waves in vacuum, whereas a ...
Akhlesh Lakhtakia   +21 more
core   +1 more source

Economic efficiency of breeding Tsigai sheep in the Central and South - East Europe [PDF]

open access: yesEkonomika Poljoprivrede (1979), 2020
Tsigai is an indigenous sheep breed present in entire Central and South-East Europe. Due to its low meat and milk production number of Tsigai sheep is in a sharp decline.
Nastić Lana   +2 more
doaj  

Accuracy of Diagnostic Codes and Algorithms Used to Identify Rheumatoid Arthritis and Juvenile Idiopathic Arthritis in Administrative Claims and Electronic Health Records: Systematic Review and Meta‐Analysis

open access: yesArthritis Care &Research, EarlyView.
Objective This systematic review aimed to assess the diagnostic accuracy of algorithms used to identify rheumatoid arthritis and juvenile idiopathic arthritis in electronic health records. Methods We searched Medline, Embase, and Cochrane Central Register for Controlled Trials databases and included studies that validated case definitions against a ...
Constanza Saka‐Herrán   +10 more
wiley   +1 more source

Bmserpin2 Is Involved in BmNPV Infection by Suppressing Melanization in Bombyx mori

open access: yesInsects, 2019
Melanization, an important defense response, plays a vital role in arthropod immunity. It is mediated by serine proteases (SPs) that convert the inactive prophenoloxidase (PPO) to active phenoloxidase (PO) and is tightly regulated by serine protease ...
Shahzad Toufeeq   +7 more
doaj   +1 more source

Clinical Significance of Therapeutic Drug Level Monitoring for Mycophenolate in Patients with Extra‐Renal Systemic Lupus Erythematosus – A Systematic Review & Meta‐analysis

open access: yesArthritis Care &Research, Accepted Article.
Background Clinical response to Mycophenolic acid (MPA) is highly heterogeneous; thus, therapeutic drug monitoring (TDM) may help improve treatment efficacy. This systematic review and meta‐analysis examined therapeutic ranges for MPA levels associated with better outcomes and safety in patients with SLE, particularly those with extra‐renal ...
Zahraa Qamhieh   +5 more
wiley   +1 more source

Optimal securities under adverse selection and moral hazard [PDF]

open access: yes, 2009
We consider project financing under adverse selection and moral hazard and derive several interesting results. First, we provide an explanation of why good firms issue both debt and underpriced equity (even if the bankruptcy and agency costs of debt are ...
Koufopoulos, Kostas
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

Enhancing Oil Recovery through Waterflooding

open access: yesArid Zone Journal of Engineering, Technology and Environment, 2020
Waterflooding is a simple and cheaper means of improving oil recovery from a reservoir by injecting water into the reservoir. Economic considerations suggest injection and production wells must be optimally placed considering reservoir geology, fluid ...
A. S. Grema   +3 more
doaj  

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