Regulatory standards and certification models are essential tools guaranteeing the authenticity of organic products. In particular, third-party certification is useful to consumers since it provides guarantees regarding production processes and food quality. In an attempt to cope with the costs and bureaucratic procedures related to the adoption of such certification, groups of small producers ...

We present a novel catadioptric-stereo rig consisting of a coaxially-aligned perspective camera and two spherical mirrors with distinct radii in a "folded" configuration. We recover a nearly-spherical dense depth panorama (360°x153°) by fusing depth-from-optical flow and stereo. We observe that for motion in a horizontal plane, optical flow and stereo generate nearly complementary distributions...

We present techniques for detecting unauthorized DNS root servers in the Internet using primarily endpoint-based measurements from RIPE Atlas, supplemented with BGP routing announcements from RouteViews and RIPE RIS. The first approach analyzes the latency to the root server and the second approach looks for route hijacks. We demonstrate the importance and validity of these techniques by measur...

The EOS-TERRA MODIS and MISR instruments provide radiances for independent spectral and stereo retrievals of cloud top height (CTH), respectively. Collocated and coincident CTH retrievals were compared against each other and with coincident millimeter-wave radar (MMCR) retrievals over the British Isles and the ARM SGP site. This intercomparison suggests close agreement between MMCRR, MODIS and ...

There are currently no requirements (technical or otherwise) that BGP paths must be contained within national boundaries. Indeed, some paths experience international detours, i.e., originate in one country, cross international boundaries and return to the same country. In most cases these are sensible traffic engineering or peering decisions at ISPs that serve multiple countries. In some cases ...

The possibility of analyzing updates exchanged between BGP talkers is crucial for several operational and research purposes. To give a few examples, they can be used to investigate the stability of specific routes, to monitor the effects of faults, and to analyze the behavior of the entire network in the presence of particular events. Several archives of BGP conversations, such as the Routing I...

OBJECTIVE Intracranial electroencephalographic (iEEG) recordings contain "bad channels", which show non-neuronal signals. Here, we developed a new method that automatically detects iEEG bad channels using machine learning of seven signal features. METHODS The features quantified signals' variance, spatial-temporal correlation and nonlinear properties. Because the number of bad channels is usu...

Despite significant efforts to obtain an accurate picture of structure at the level of individual autonomous systems (ASes), much remains unknown in terms of the quality of the inferred AS maps that have been widely used by the research community. Building upon our recent results reported in [16], in this paper we take a first step towards quantifying the (in)completeness of the observed AS-lev...

We analyze the evolution of the global Internet interdomain routing system on AS, prefix and IP address level granularities, using snapshots of RouteViews BGP tables from 1997 to 2001. We introduce the notion of semiglobally routed prefixes, those present in the majority of backbone tables, and classify them into standalone – those which have no subsets, no supersets; root – have subsets, but n...