We consider the effect of Coulomb interactions on the average density of states (DOS) of disordered low-dimensional metals for temperatures T and frequencies ω smaller than the inverse elastic life-time 1/τ0. Using the fact that long-range Coulomb interactions in two dimensions (2d) generate ln singularities in the DOS ν(ω) but only ln-singularities in the conductivity σ(ω), we can re-sum the m...

In underwater acoustic networks (UANs), due to the unique characteristics of acoustic modems such as long preambles and extremely low transmission rates, contentions are usually costly. As a result, both random access and handshake based MAC protocols do not perform as well as expected. A collisionfree approach is therefore considered to more likely achieve a better performance. Following this ...

Information security is an issue of global concern. As the Internet is delivering great convenience and benefits to the modern society, the rapidly increasing connectivity and accessibility to the Internet is also posing a serious threat to security and privacy, to individuals, organizations, and nations alike. Finding effective ways to detect, prevent, and respond to intrusions and hacker atta...

Monitoring tumor response to therapy can enable assessment of treatment efficacy, maximizing patient outcome and survival. We employ a noninvasive, handheld laser breast scanner (LBS) based on broadband diffuse optical spectroscopy (DOS) in conjunction with contrast-enhanced magnetic resonance imaging (cMRI) to assess tumor response to presurgical neoadjuvant chemotherapy. DOS and cMRI scans ar...

Over the next decade, cloud computing has a good chance of becoming a widely used technology. However, many challenges face the cloud to be overcome before the average user or business team will trust their vital information with a cloud server. Most of these challenges tie into developing sound security measures for the cloud. One of the largest security obstacles is how to defend against a De...

0. Abstract. PC Beta is a PC oriented tool for corpus work in this term's broadest possible sense. With PC Beta one can prepare texts for corpus work, e.g. standardize texts in different ways (very important when texts from different sources together will constitute a corpus), one can process texts, and one can analyze texts. Making ordinary concordances and similar things with PC Beta is, of c...

Background: Serial blood draws for the assessment of a trauma patient’s hemoglobin (sHgb) and hematocrit (sHct) is standard practice. In the event of multiple casualties this process can be time consuming and lead to the inefficient use of valuable resources. A device that would allow for continuous real-time, non-invasive monitoring of hemoglobin and tissue perfusion would not only improve the...

Cloud Computing is a computing model that allows ubiquitous, convenient and on-demand access to a shared pool of highly configurable resources (e.g., networks, servers, storage, applications and services). Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) attacks are serious threats to the Cloud services’ availability due to numerous new vulnerabilities introduced by the nature o...

1 Spinal Cord Service, Centro de Medicina de Reabilitação de Alcoitão, Portugal. Neste trabalho efetua-se uma reflexão sobre algumas das questões que estão a influenciar a reabilitação na atualidade. As alterações demográficas e a epidemiologia das doenças, o aumento das expectativas dos doentes, o crescimento dos custos dos cuidados de reabilitação, e também a dificuldade em estabelecer os lim...

Protein kinases control cellular responses to environmental cues by swift and accurate signal processing. Breakdowns in this high-fidelity capability are a driving force in cancer and other diseases. Thus, our limited understanding of which amino acids in the kinase domain encode substrate specificity, the so-called determinants of specificity (DoS), constitutes a major obstacle in cancer signa...