We demonstrate the directional emission of individual GaAs nanowires by coupling this emission to Yagi-Uda optical antennas. In particular, we have replaced the resonant metallic feed element of the nanoantenna by an individual nanowire and measured with the microscope the photoluminescence of the hybrid structure as a function of the emission angle by imaging the back focal plane of the object...

Symmetric relaying is a method of relaying in which the relays can decode the message of other relays in the network in addition to the source message. In this paper an achievable rate is presented for a symmetric two-relay network based on partial decoding. The strategy make use of familiar techniques such as product binning, regular encoding/sliding window decoding and regular encoding/backwa...

This paper offers a framework for analysing the economic drivers and effects of agrobiodiversity loss, focusing on in-situ conservation at both farm and landscape levels. We distinguish between the proximate and fundamental causes of biodiversity loss in terms of the decentralised (microeconomic) behaviour of farming households. Special attention is paid to the interplay between microeconomic d...

Part feeders, which singulate and orient parts prior to packing and insertion, are critical components of an assembly line. Existing feeders utilize o -plane vibrations of a rigid structure to convey parts along a track. Repeated part hopping/landing phases are concerns if parts are delicate and/or high positioning accuracy is required. Here we consider a simpler feeder design in which parts ar...

On-line media and self-directed learning environments are among the most effective training solutions in terms of cost, time and logistics. In the last few years, the percentage of employees participating in training courses has increased. At the same time, there has been a decline of training budgets. Therefore, careful educational controlling must guard direct and indirect costs listed by amo...

Ciliates feed by phagocytosis. Some ciliate species, such as Tetrahymena vorax, are polymorphic, a strategy that provides more flexible food utilization. Cells of the microstomal morph of T. vorax feed on bacteria, organic particles and organic solutes in a non-selective manner, whereas macrostome cells are predators that consume specific prey ciliates. In the present study, we investigated a p...

The purpose of this study was to examine Cook’s (2003) ‘multiple competence’ by investigating backward pragmatic transfer (from L2 [English] to L1 [Persian]) in refusals to invitations. It explored participants’ frequency and content of refusal strategies in L1 regarding the status (i.e., power and distance) of interlocutors and the proficiency level of EFL learners. The participants were Persi...

SWFP ensures the secure broadcasting of web feeds’ content over a local network or the Internet. The protocol is built to ensure a secure channel to enterprises that broadcast news and information to their employees through web feeds. The protocol also ensures the legitimacy of the readers.