Biographical note: Alice Sullivan is a Research Officer at the Bedford Group for Lifecourse and Statistical Studies, Institute of Education, University of London. Current projects include a study of co-educational and single-sex schooling. Acknowledgements: Many thanks to John Bynner, Anthony Heath, Geoffrey Walford and two referees. This work was funded by an ESRC studentship.

The is the fifth in a series of research reports from the first phase of the ALiCE II project. This report presents the background and technical details of the cellular wireless internet communication subsystem for the Autonomous Line Crawling Equipment (ALiCE II) robot. ALiCE II is a second generation version of a new family of autonomous line-crawling robotic devices using swarm intelligence ...

We consider a simple streaming game between two players Alice and Bob, which we call the mirror game. In this game, Alice and Bob take turns saying numbers belonging to the set {1, 2, . . . , 2N}. A player loses if they repeat a number that has already been said. Bob, who goes second, has a very simple (and memoryless) strategy to avoid losing: whenever Alice says x, respond with 2N+1−x. The qu...

Alice gets a k-bit message x to send to Bob. Unfortunately, the communication channel is corrupted, and some number of bits may flip. For conceretness, say twenty percent of all bits sent on the channel may flip. Which bits are flipped is unknown, and different bits may flip for different messages sent on the channel. Can Alice still send a message that can be reliably received by Bob? We allow...

The Higgs boson is the theoretical mechanism for creating the mass of particles. Although it has never been seen, the CERN Large Hadron Collider (LHC) is the most likely place for it to be created in the laboratory. The ALICE (A Large Ion Collider Experiment) detector is focused on the study of heavy ion collisions at the LHC and was not designed to find the Higgs boson; however, there is a cha...

Consider the following situation: Alice is a hand-held device, such as a PDA. Bob is a device providing a service, such as an ATM, an automatic door, or an anti-aircraft gun pointing at the gyro-copter in which Alice is travelling. Bob and Alice have never directly met before, but share a key as a result of secure hand-offs. Alice has used this key to request a service from Bob (dispense cash, ...

This paper proposes a new scheme to secure the transmissions in an untrusted decode-and-forward (DF) relaying network. A legitimate source node, Alice, sends her data to a legitimate destination node, Bob, with the aid of an untrusted DF relay node, Charlie. To secure the transmissions from Charlie during relaying time slots, each data codeword is secured using a secret-key codeword that has be...

We examined software usage in a sample set of astrophysics research articles published in 2015 and searched for source code for the software mentioned in these research papers. We categorized the software to indicate whether source code is available for download and whether there are restrictions to accessing it, and if source code is not available, whether some other form of the software, such...

Following McDuff and Tolman’s work on toric manifolds [29], we focus on 4– dimensional NEF toric manifolds and we show that even though Seidel’s elements consist of infinitely many contributions, they can be expressed by closed formulas. From these formulas, we then deduce the expression of the quantum homology ring of these manifolds as well as their Landau–Ginzburg superpotential. We also giv...