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—This paper presents an overview of the ORBIT (Open Access Research Testbed for Next-Generation Wireless Networks) radio grid testbed 1 , that is currently being developed for scalable and reproducible evaluation of next-generation wireless network protocols. The ORBIT testbed consists of an indoor radio grid emulator for controlled experimentation and an(More)
• Scale of WLAN – Microsoft's WLAN has over 5000 APs • Need to deploy many monitors – Rapid fading of signal in indoor environment – Multiple orthogonal channels – May need observations from multiple vantage points Š Pinpoint location of rogue AP • Eavesdropping – Passive snooping (perhaps with high-gain antennas) – Nearly impossible to detect –(More)
CONTEXT Deficits in reward processing and their neural correlates have been associated with major depression. However, it is unclear if these deficits precede the onset of depression or are a consequence of this disorder. OBJECTIVE To determine whether anomalous neural processing of reward characterizes children at familial risk for depression in the(More)
This paper presents the software architecture of the ORBIT radio grid testbed 1. We describe the requirements for supporting the lifecycle of an experiment and how they influenced the overall design of the architecture. We specifically highlight those components and services which will be visible to a user of the ORBIT testbed.
We present a framework for managing and troubleshooting enterprise wireless networks using desktop infrastructure. The framework is called DAIR, which is short for Dense Array of Inexpensive Radios. Prior proposals in this area include monitoring the network via a combination of access points (APs), mobile clients, and dedicated sensor nodes. We believe(More)
This study examines psychomotor inhibition, sustained attention, and inhibitory attentional control in adolescents (ages 12-18 years) with a nonmanic mood disorder and with a first-degree relative with bipolar I disorder (MD, N = 20) and demographically matched healthy children of parents without any psychiatric disorder (HC, N = 13). MD participants showed(More)
In this paper we present ORBIT measurement library (OML), which is a distributed software framework enabling real-time collection of data in a large distributed environment. The success of a multiuser distributed testbed facility depends largely on the ease of use, remote access as well as on the ease of collecting useful measurements from experimental(More)
Web-based enterprises process events generated by millions of users interacting with their websites. Rich statistical data distilled from combining such interactions in near real-time generates enormous business value. In this paper, we describe the architecture of Photon, a geographically distributed system for joining multiple continuously flowing streams(More)
OBJECTIVE Recently we have shown that calpain-1 activation contributes to cardiomyocyte apoptosis induced by hyperglycemia. This study was undertaken to investigate whether targeted disruption of calpain would reduce myocardial hypertrophy and fibrosis in mouse models of type 1 diabetes. RESEARCH DESIGN AND METHODS Diabetes in mice was induced by(More)
OBJECTIVE Bipolar disorder (BD) commonly begins during adolescence and may continue into adulthood. Studies in adults with BD suggest that disruptions in amygdalar neural circuitry explain the pathophysiology underlying the disorder. Importantly, however, amygdala subregion networks have not yet been examined in youth close to mania onset. The goal of this(More)