A 5GHz low power WLAN transceiver SiGe RFIC for personal communication terminal applications

A low-cost low-power single chip WLAN 802.11a transceiver is designed for personal communication terminal and local multimedia data transmission. It has less than 130mA current dissipation, maximal 67dB gain and can be programmed to be 20dB minimal gain. The receiver system noise figure is 6.4dB in hige-gain mode.

Global iron connections between desert dust, ocean biogeochemistry, and climate

IEECAS SKLLQG

Public feedback - but personal feedforward?

Academic feedback is taken here as the reporting to student writers of the strengths and weaknesses of their submitted draft work, while academic feedforward refers to constructive advice regarding possible strengthening of students’ next work. Both originate from a tutor’s initial judgement of a student’s work. Feedback and feedforward on work showing need for improvement are problematic in a Confucian Heritage Culture. Even gently constructive advice within a programme seeking evidence for assessment of critical thinking may lead to perception of hurtful criticism by Taiwanese students. Some could withdraw from class activity accordingly. So the writers adjusted their response style. They now choose between different approaches featuring tutorial feedback or feedforward, depending on the standard of work being judged. When individual postings feature poor critical thinking, the writers opt for private messages concentrating on constructive feedforward. For better postings, they provide positive feedback with reasons for their judgements, and summarise to the class these exemplars of generic strengths in critical thinking. They also offer private prompting when they see scope for further enrichment of an able student’s critical thinking. This might also be a useful practice when tutoring solely in the West. (192 words) Keywords: Confucian Heritage Culture, public feedback, private feedforward, assessment

Making Connections.

The piece is written for an ensemble of alto/bass flute, alto saxophone, viola, vibraphone/bongos and piano. Written as part of a telematic research project connecting musicians and dancers in remote sites, the work involved a collaboration with musicians at Edinburgh Napier University and dancers at Liverpool John Moores University and Nova Southeastern University, Florida.

Celtic Dacia : Personal Names, Place-Names and Ethnic Names of Celtic Origin in Dacia and Scythia Minor

RAE2008

The geography of Celtic personal names in the Latin inscriptions of the Roman Empire

Raybould, Marilynne, and Sims-Williams, Patrick, The geography of Celtic personal names in the Latin inscriptions of the Roman Empire (Aberystwyth: CMCS publications, 2007) RAE2008

A Corpus of Latin Inscriptions of the Roman Empire containing Celtic personal names

Raybould, M. and Sims-Williams, P. (2007). A Corpus of Latin Inscriptions of the Roman Empire containing Celtic personal names. Aberystwyth: CMCS publications. RAE2008

Christological personal seals and Christocentric devotion in later medieval England and Wales

New, E. (2002). Christological personal seals and Christocentric devotion in later medieval England and Wales. Antiquaries Journal. 82, pp.47-68. RAE2008

Imágenes de paisajes, poblados y presentación personal de los Guambianos y Paeces Cauca.

12 hojas : ilustraciones, fotografías a color.

ROMA: Reliable Overlay Multicast with Loosely Coupled TCP Connections

We consider the problem of architecting a reliable content delivery system across an overlay network using TCP connections as the transport primitive. We first argue that natural designs based on store-and-forward principles that tightly couple TCP connections at intermediate end-systems impose fundamental performance limitations, such as dragging down all transfer rates in the system to the rate of the slowest receiver. In contrast, the ROMA architecture we propose incorporates the use of loosely coupled TCP connections together with fast forward error correction techniques to deliver a scalable solution that better accommodates a set of heterogeneous receivers. The methods we develop establish chains of TCP connections, whose expected performance we analyze through equation-based methods. We validate our analytical findings and evaluate the performance of our ROMA architecture using a prototype implementation via extensive Internet experimentation across the PlanetLab distributed testbed.