Background: There is some demand for nasogastric tube insertion in unconscious or ICU patients. Nasogastric tubes are generally made of flexible plastic materials, prone to twisting and deviation by the tracheal tube, when passing through the pharynx and esophageal opening, making it difficult to insert the NG-tube properly. We hypothesized that NG-tube insertion with help of guidewire can sign...

Power consumption is rapidly increased in data centers because the number of data center is increased and more the scale of data center become larger. Therefore, it is one of key research items to reduce power consumption in data center. The peak power of a typical server is around 250 watts. When a server is idle, it continues to use around 60% of the power consumed when in use, though vendors...

In this short paper, we would like to call professional community’s attention to a daring idea that is surely unhelpful, but is exciting for programmers and anyway conflicts with the trend of energy consumption in computer systems.

Cosmology is undergoing an explosive period of activity, fueled both by new, accurate astrophysical data and by innovative theoretical developments. Cosmological parameters such as the total density of the Universe and the rate of cosmological expansion are being precisely measured for the first time, and a consistent standard picture of the Universe is beginning to emerge. Recent developments ...

Current scanning detection algorithms are based on an underlying assumption that scanning activity can be attributed to a meaningful specific source (i.e. the root cause or scan controller). Sophisticated scanning activity including the use of botnets, idle scanning, and throwaway systems violates this assumption. We propose a class of scanning detection algorithms that focus on what is being s...

We study the problem of optimally controlling the use of sleep states in an energy-aware M/G/1 queue. In our model, we consider a family of policies where the server upon becoming idle can wait for a random period before entering, potentially randomly, any of a finite number of possible sleep states to save energy. The server becomes busy again after a possibly random number of jobs have arrive...