Tag Archives: usc

Understanding Packet Delivery Performance In Dense Wireless Sensor Networks

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I found this paper very useful.

ABSTRACT

Wireless sensor networks promise fine-grain monitoring  in a wide variety of environments. Many of these  environments (e.g., indoor environments or habitats) can be harsh for wireless communication. From a networking perspective, the most basic aspect of wireless communication is the packet delivery performance: the spatio-temporal characteristics of packet loss, and its  environmental dependence.

These factors will deeply impact the performance of data acquisition from these networks.

In this paper, we report on a systematic medium-scale (up to sixty nodes) measurement of packet delivery in three different environments: an indoor office building, a habitat with moderate foliage, and an open parking lot. Our  findings have interesting implications for the design and  evaluation of routing and medium-access protocols for  sensor networks.

via Understanding Packet Delivery Performance In Dense Wireless Sensor Networks

Scientists who took chemistry into cyberspace win Nobel Prize

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Chemical reactions occur at lightning speed as electrons jump between atomic nuclei, making it virtually impossible to map every separate step in chemical processes involving large molecules like proteins.

Powerful computer models, first developed by the three scientists in 1970s, offer a new window onto such reactions and have become a mainstay for researchers in thousands of academic and industrial laboratories around the world.

via Scientists who took chemistry into cyberspace win Nobel Prize – chicagotribune.com.