Results 81 to 90 of about 2,845,707 (370)
A 4 × 4 Butler matrix with switching/steering beams based on new tunable phase difference couplers
International journal of microwave and wireless technologiesBasically, a 4 × 4 Butler matrix (BM) connected to an antenna array allows to have four beams, each oriented in a specific direction depending on the excitation port. In this paper, an almost continuously steerable beam system based on a conventional 4
Taleb Mohamed Benaouf +4 more
semanticscholar +1 more source
Optimal strategies of radial velocity observations in planet search surveys
, 2008 Applications of the theory of optimal design of experiments to radial velocity planet search surveys are considered. Different optimality criteria are discussed, basing on the Fisher, Shannon, and Kullback-Leibler informations.
Baluev +22 more
core +1 more source
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT Mining is one of the foundations of economic development but has historically been associated with severe socioenvironmental impacts, such as ecosystem degradation, displacement of traditional communities, and large‐scale disasters. In this context, corporate social responsibility (CSR) plays a central role as a mechanism for legitimizing ...
Felipe Moura Oliveira +1 more
wiley +1 more source
IEEE Access, 2018 In this paper, a novel circularly polarized end-fire septum antenna based on substrateintegrated-waveguide (SIW) is proposed in the 60-GHz band. By introducing four symmetrical tapered curved air slots in three stacked open-ended SIW layers, the antenna ...
Xiaohe Cheng +6 more
doaj +1 more source
Lose the plot: cost-effective survey of the Peak Range, central Queensland [PDF]
, 2013 The Peak Range (22˚ 28’ S; 147˚ 53’ E) is an archipelago of rocky peaks set in grassy basalt rolling-plains, east of Clermont in central Queensland. This report describes the flora and vegetation based on surveys of 26 peaks.
Butler, Don W., Fensham, Rod J.
core
Ecography, EarlyView.Migration is challenging for birds, especially juveniles, who experience high mortality rates during migration. The challenge is exacerbated in the Anthropocene, contributing to widespread population declines. Conservation efforts focused on increasing juvenile survival could bolster population recovery.
Dylan M. Osterhaus +2 more
wiley +1 more source
The foreclosure of the drive queer theories, gender, sex, and the politics of recognition [PDF]
, 2017 Siguiendo a Leo Bersani y a Lee Edelman, se podría sostener que, insistiendo en la búsqueda de reconocimiento social por parte de las minorías sexuales, la teoría de la performatividad de género de Judith Butler corre el riesgo de desexualizar la ...
Bernini, Lorenzo
core +3 more sources
Future Postharvest and Food, EarlyView.The detection of toxins in baby food using artificial intelligence. ABSTRACT Infant foods and baby formulas are becoming increasingly popular across the globe owing to their ease of consumption and nutritional value specific to infants. Impurities may find their way into the food chain at any point from the acquisition of raw materials to final ...
Poornima Singh +3 more
wiley +1 more source
Mountain-Shaped Coupler for Ultra Wideband Applications [PDF]
, 2013 This paper demonstrates a novel mountain-shaped design for a compact 3-dB coupler operating at ultra-wideband (UWB) frequencies from 3.1GHz to 10.6 GHz. The proposed design was accomplished using multilayer technology in which the structure is formed by ...
Ausordin, S. F. +6 more
core +1 more source
InfoMat, EarlyView.This work constructs a series of graphite anodes with systematically varied binder distribution, porosity, and electrode thickness to resolve the role of microstructural heterogeneity during fast charging. The digital twin framework reveals how phase‐level structural gradients govern Li plating, SEI formation, and diffusion‐induced stresses, providing ...
Yejin Kang +4 more
wiley +1 more source