Soft Session Types

We show how systems of session types can enforce interactions to be bounded for all typable processes. The type system we propose is based on Lafont's soft linear logic and is strongly inspired by recent works about session types as intuitionistic linear logic formulas. Our main result is the existence, for every typable process, of a polynomial bound on the length of any reduction sequence starting from it and on the size of any of its reducts.Comment: In Proceedings EXPRESS 2011, arXiv:1108.407

REDO RSVP: Efficient Signalling for Multimedia in the Internet

Alarming reports of performance and scalability problems associated with per-flow reservations, have led many to lose belief in RSVP and the Integrated Services Architecture that relies on it. Because we are convinced of the need for some form of resource reservation, to support multimedia communications in the Internet, we have set about trying to improve RSVP. By careful study of the protocol, we have identified areas for improvement, and propose REDO RSVP, a reduced overhead version that includes a fast establishment mechanism (FEM). In this paper we describe the rationale for REDO RSVP and present a detailed analysis of its features and operations. We also analyse REDO RSVP by means of simulations, and show that it offers improvements to the performance of RSVP

The acute effects of two different self-myofascial release products on the calf muscle pump and plantar flexion ankle range of motion

textBackground: Massage can promote healing and recovery following exercise. (Carefelli et al. 1992). Barnes (1990) proposed that myofascial release helps to break up fibrotic fascial adhesions that may restrict joint range of motion (ROM). Self-myofascial release (SMR) is a type of massage that uses a roller and an individuals body weight to produce massage like loading over a specific anatomical area. Viscoelastic properties of muscle tissue extensibility increase during an acute bout (15 minutes) of massage-like loading (Haas et al 2012). Self-massage on the calves reduced pain and edema of the calves on nurses after an 8.5-hour work shift (Oh and Yoon 2008). Increasing blood flow through skeletal muscle will lead to increased oxygen delivery, which can increase healing and return to homeostasis post-exercise. Different shapes and densities of SMR rollers may produce different outcomes (Johansson 1962, Curran et al. 2012). Hypothesis: TP Footballer will have a greater effect on popliteal artery blood flow volume and ankle ROM vs. the SPRI® foam roller. Methods: N = 21 subjects (10 male 11 female; 18-27). No current lower extremity injury (within one year). No exercise 48 hours prior to data collection. Exercise was defined as any rigorous physical activity lasting 30 minutes or longer. Subjects rested prone 20 minutes. Resting BF and AD measurements were taken with an 8-13 MHz probe via Sonosite Micromaxx Doppler Ultrasound. Ankle ROM taken with a goniometer (mean of 3x). Statistics: Two-way repeated measure ANOVA and Bonferroni test was used to compare pre-test and post-test measures across both treatment conditions with two types of rollers. The α level was set at 0.05. Results: No significant increases found using the SPRI® foam roller on variables of BF Volume, TAP and ROM in plantar flexion. Significant increases found with arterial diameter. Significant increases using the TP Therapy Products Footballer® on variables of: ROM in plantar flexion, blood flow volume, arterial diameter Conclusion: SPRI® foam roller and TP Footballer® significantly increased popliteal arterial diameter. The TP Therapy Products Footballer® increased blood flow volume immediately following TP Therapy Soleus Protocol. TP Therapy Products Footballer® increased ankle plantar flexion immediately following TP Therapy Soleus Protocol.Kinesiology and Health Educatio

Summary of the 13th IACHEC Meeting

We summarize the outcome of the 13th meeting of the International Astronomical Consortium for High Energy Calibration (IACHEC), held at Tenuta dei Ciclamini (Avigliano Umbro, Italy) in April 2018. Fifty-one scientists directly involved in the calibration of operational and future high-energy missions gathered during 3.5 days to discuss the current status of the X-ray payload inter-calibration and possible approaches to improve it. This summary consists of reports from the various working groups with topics ranging from the identification and characterization of standard calibration sources, multi-observatory cross-calibration campaigns, appropriate and new statistical techniques, calibration of instruments and characterization of background, and communication and preservation of knowledge and results for the benefit of the astronomical community.Comment: 12 page

Nurturing Talent HE STEM Project Report

This is the final report outlining the findings of our evaluation of a Widening Participation initiative involving young members of the Somali community in Brent, London

EU accession and Poland's external trade policy

No description supplie

Quality of Service over Specific Link Layers: state of the art report

The Integrated Services concept is proposed as an enhancement to the current Internet architecture, to provide a better Quality of Service (QoS) than that provided by the traditional Best-Effort service. The features of the Integrated Services are explained in this report. To support Integrated Services, certain requirements are posed on the underlying link layer. These requirements are studied by the Integrated Services over Specific Link Layers (ISSLL) IETF working group. The status of this ongoing research is reported in this document. To be more specific, the solutions to provide Integrated Services over ATM, IEEE 802 LAN technologies and low-bitrate links are evaluated in detail. The ISSLL working group has not yet studied the requirements, that are posed on the underlying link layer, when this link layer is wireless. Therefore, this state of the art report is extended with an identification of the requirements that are posed on the underlying wireless link, to provide differentiated Quality of Service

Reduced attentional blink for alcohol-related stimuli in heavy social drinkers

Researchers have used various paradigms to show that attentional biases for substance-related stimuli are an important feature of addictive behaviours. However, it is not clear whether these attentional biases occur at the level of encoding or at later post-attentive processing stages. We examined attentional bias at the level of encoding with the attentional blink paradigm in a sample of non-clinical heavy and light-drinking students. Our results show a diminished attentional blink effect for alcohol-related words compared with soft drink-related words among heavy drinkers. The attentional blink was equally strong for alcohol-related and soft drink-related words among light drinkers. This suggests that alcohol-related information is processed relatively more efficiently in the former group. Even though these results are promising, our study shows that the internal consistency of the attentional blink can be improved