Near real-time flood detection in urban and rural areas using high resolution Synthetic Aperture Radar images

A near real-time flood detection algorithm giving a synoptic overview of the extent of flooding in both urban and rural areas, and capable of working during night-time and day-time even if cloud was present, could be a useful tool for operational flood relief management. The paper describes an automatic algorithm using high resolution Synthetic Aperture Radar (SAR) satellite data that builds on existing approaches, including the use of image segmentation techniques prior to object classification to cope with the very large number of pixels in these scenes. Flood detection in urban areas is guided by the flood extent derived in adjacent rural areas. The algorithm assumes that high resolution topographic height data are available for at least the urban areas of the scene, in order that a SAR simulator may be used to estimate areas of radar shadow and layover. The algorithm proved capable of detecting flooding in rural areas using TerraSAR-X with good accuracy, and in urban areas with reasonable accuracy. The accuracy was reduced in urban areas partly because of TerraSAR-X’s restricted visibility of the ground surface due to radar shadow and layover

Suspect an eating disorder? Suggest CBT

Refer patients with eating disorder not otherwise specified (NOS) for cognitive behavioral therapy. CBT, which has proven to be the most useful behavioral treatment for bulimia, has now been shown to be effective for patients in the NOS category. Stength of recommendation: B: 1 high-quality, randomized controlled trial (RCT)

The symbolosphere, conceptualization, language, and neo-dualism

It is shown that Schumann’s (2003) notion of the Symbolosphere, the non-physical world of symbolic relationships and Logan’s (2000a) Extended Mind model in which the mind is defined as the brain plus language entail a form of dualism. A distinction is made between the symbolosphere, which includes the human mind and all its thoughts and communication processes such as language and the physiosphere which is simply the physical world and includes the human brain. No distinction is made between substance and property dualism, hence the use of the term neo-dualism. The neo-dualistic approach is justified on the basis that at our current understanding of neuroscience is unable to connect the functions of the mind with the actions of the brain and hence it makes sense from a practical point of view to distinguish between these two levels of phenomena. The neo-dualism formulated here is also used to critique strong AI and deconstructionism

Shuttle landing facility cloud cover study: Climatological analysis and two tenths cloud cover rule evaluation

The two-tenths cloud cover rule in effect for all End Of Mission (EOM) STS landings at the Kennedy Space Center (KSC) states: 'for scattered cloud layers below 10,000 feet, cloud cover must be observed to be less than or equal to 0.2 at the de-orbit burn go/no-go decision time (approximately 90 minutes before landing time)'. This rule was designed to protect against a ceiling (below 10,000 feet) developing unexpectedly within the next 90 minutes (i.e., after the de-orbit burn decision and before landing). The Applied Meteorological Unit (AMU) developed and analyzed a database of cloud cover amounts and weather conditions at the Shuttle Landing Facility for a five-year (1986-1990) period. The data indicate the best time to land the shuttle at KSC is during the summer while the worst time is during the winter. The analysis also shows the highest frequency of landing opportunities occurs for the 0100-0600 UTC and 1300-1600 UTC time periods. The worst time of the day to land a shuttle is near sunrise and during the afternoon. An evaluation of the two-tenths cloud cover rule for most data categorizations has shown that there is a significant difference in the proportions of weather violations one and two hours subsequent to initial conditions of 0.2 and 0.3 cloud cover. However, for May, Oct., 700 mb northerly wind category, 1500 UTC category, and 1600 UTC category there is some evidence that the 0.2 cloud cover rule may be overly conservative. This possibility requires further investigation. As a result of these analyses, the AMU developed nomograms to help the Spaceflight Meteorological Group (SMG) and the Cape Canaveral Forecast Facility (CCFF) forecast cloud cover for EOM and Return to Launch Site (RTLS) at KSC. Future work will include updating the two tenths database, further analysis of the data for several categorizations, and developing a proof of concept artificial neural network to provide forecast guidance of weather constraint violations for shuttle landings

Dust mite control measures don't help asthma patients

Stop recommending dust mite control measures to your asthma patients. Neither chemical nor physical reduction measures are effective in improving peak flow, symptoms of asthma, or medication usage. Stength of recommendation: B: Based on a meta-analysis of 54 fair quality randomized trials in patients with mite-sensitive asthma

Patients insist on antibiotics for sinusitis? Here is a good reason to say no

Stop prescribing antibiotics for adults with a clinical diagnosis of acute sinusitis, unless the patient has severe symptoms Antibiotics have little if any positive effects on the severity and duration of symptoms, and they cause adverse effects and create unnecessary expense. Stength of recommendation: A: Based on a meta-analysis of 9 randomized trials in primary care practice