APPLIED PHYSICS: The Ups and Ups of Silicon

US line-ups outperform UK line-ups

In the USA and the UK, many thousands of police suspects are identified by eyewitnesses every year. Unfortunately, many of those suspects are innocent, which becomes evident when they are exonerated by DNA testing, often after having been imprisoned for years. It is, therefore, imperative to use identification procedures that best enable eyewitnesses to discriminate innocent from guilty suspect...

The UPS Problem

Mdm2: the ups and downs.

Mdm2 was first described 12 years ago. Interest in this oncogene has risen since its identification as a protein that binds and efficiently inactivates the p53 tumor suppressor protein. This interest was further boosted by the discovery that the mdm2 gene is actually a target for direct transcriptional activation by p53, thus defining an autoregulatory feedback loop for the intracellular modula...

Competition and Hold-ups∗

In an environment in which both workers and firms undertake match specific investments, the presence of market competition for matches may solve the hold-up problems generated by the absence of complete contingent contracts. In particular, this paper shows that in a world in which workers’ and firms’ investments are separated by market competition and contracts specify a simple (non-contingent)...

Lash-Ups: A Toolkit for Location-Aware Mash-Ups

Mash-ups of web content are a quickly growing in popularity due to an increasing amount of public APIs for web services. Similarly, web-enabled cellular phones are becoming increasingly pervasive. We present Lash-Ups, a toolkit that enables programmers to create mash-up-like locationaware web services for phones. This toolkit solves two fundamental problems. First, it provides a simple, standar...