Browsing University of Hertfordshire by Title
Now showing items 24026-24045 of 24377
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Wideband Circularly Polarized Reflectarray Antenna Using Rotational Symmetrical Crossed Dipoles
(2023-05-30)A wideband circularly polarized (CP) reflectarray (RA) antenna using rotational symmetrical crossed dipoles is presented. This is the first time investigating coupled crossed dipoles as the unit cell for wideband reflection ... -
Wideband Differentially Fed Dual-Polarized Antenna by Using Three-Strip Transmission Lines
(2021-07-01)A new method of designing a wideband differentially fed dual-polarized antenna by using three-strip transmission lines (TS-TLs) is presented. A wideband power divider composed of four TS-TLs is firstly proposed and illustrated ... -
Wideband Differentially-Fed Slot Antenna and Array With Circularly Polarized Radiation for Millimeter-Wave Applications
(2022-01-28)A wideband differentially-fed slot antenna is presented for millimeter-wave (mmWave) applications. A novel method of using stepped corner-shaped slot is first utilized to establish the wideband circularly polarized (CP) ... -
A wideband linear tunable CDTA and its application in field programmable analogue array
(2016-09-01)In this paper, a NMOS-based wideband low power and linear tunable transconductance current differencing transconductance amplifier (CDTA) is presented. Based on the NMOS CDTA, a novel simple and easily reconfigurable ... -
A Wideband Metal-Only Transmitarray With Two-layer Configuration
(2021-05-18)This letter presents a novel wideband metal-only transmitarray (TA) design. Up to date, existing works on metal-only TAs use at least three layers spaced by air gaps. Compared to these designs, the presented TA only has ... -
A Wideband Triple-Mode Differentially-Fed Microstrip Patch Antenna
(2021-04-21)A wideband differentially-fed microstrip patch antenna (MPA) with tripe-resonant modes is presented in this letter. The proposed triple-mode MPA is realized by combining two dual-mode MPAs (MPA-I and MPA-II) with different ... -
Widening participation: what does it mean for the University of Hertfordshire?
(2008)Different target groups for widening participation (WP) are surveyed and those most relevant to the university identified. The university is very active in outreach and targeted recruitment. However, an equally important ... -
Widening the gap between measurement and modelling of secondary organic aerosol properties?
(2010)The link between measured sub-saturated hygroscopicity and cloud activation potential of secondary organic aerosol particles produced by the chamber photo-oxidation of alpha-pinene in the presence or absence of ammonium ... -
The wider picture: Parallel evidence in America and Australia
(Palgrave Macmillan, 2015) -
WiGlove : A Passive Dynamic Orthosis for Home-based Post-stroke Rehabilitation of Hand and Wrist
(2023-09-11)Stroke survivors often experience varying levels of motor function deficits in their hands affecting their ability to perform activities of daily life. Recovering their hand functions through neurorehabilitation is a ... -
Wigner flow reveals topological order in quantum phase space dynamics
(2013-01)The behaviour of classical mechanical systems is characterised by their phase portraits, the collections of their trajectories. Heisenberg's uncertainty principle precludes the existence of sharply defned trajectories, ... -
Wigner's quantum phase space current in weakly anharmonic weakly excited two-state systems
(2017-09-30)There are no phase-space trajectories for anharmonic quantum systems, but Wigner’s phase-space representation of quantum mechanics features Wigner current J . This current reveals fine details of quantum dynamics – finer ... -
Wigner's representation of quantum mechanics in integral form and its applications
(2017-02-27)We consider quantum phase space dynamics using the Wigner representation of quantum mechanics. We stress the usefulness of the integral form for the description of Wigner's phase space current~$\bm J$ as an alternative to ... -
Wigner-Current in One-Dimensional Bound-State Systems
(2019-03-27)The behaviour of classical systems is characterised by their phase portraits; the collections of their trajectories. In quantum mechanics phase portraits are still considered impossible to compute due to the complexity of ... -
A Wii Bit of Fun: A Novel Platform to Deliver Effective Balance Training to Older Adults
(2015-10-28)BACKGROUND: Falls and fall-related injuries are symptomatic of an aging population. This study aimed to design, develop, and deliver a novel method of balance training, using an interactive game-based system to promote ... -
Wiki-based process framework for blended learning
(ACM Press, 2007)With few exceptions, currently published research on the educational use of wikis does not include how the learning activities should be shaped, planned or enforced in a wiki [11]. In this paper we aim to fill that gap by ... -
Wiki-supported collaborative learning
(Nova Science Publishers, 2011)The aim of this chapter is to increase the understanding of how wikis can be used effectively to support collaborative learning in the context of higher education, and in particular, 1) To identify the relevant theories ... -
Wild bee toxicity data for pesticide risk assessments
(2019-07-11)Pollination services are vital for agriculture, food security and biodiversity. Although many insect species provide pollination services, honeybees are thought to be the major provider of this service to agriculture. ...