The transmission of data on wireless links requires some means of preserving data integrity in spite of the higher error rates expected in a typical radio environment. Both the use of an appropriate Forward Error Correction (FEC) coding and a suitable Automatic Repeat Request (ARQ) protocol are considered for non time critical services [1]. Their use is reconsidered in view of the large number ...

A micro component for a non-selective NDIR (non dispersive infrared) gas detection system is presented in this work. This device consist of an IR detection module composed of two matching arrays, one of filters and one of thermopile detectors. These arrays (up to 4x4 elements) are built on a silicon substrate using CMOS compatible materials and processes. Bulk micro-machining is used to build t...

Pro-gelator 1 shows visual detection of Ag + ion through sol-to-gel conversion. Additionally, it exhibits the selective sensing Hg 2+ over a series metal ions in solution.

Change detection scheme based on guided contrasting was previously proposed. Guided contrasting filter takes two images (test and sample) as input and forms the output as filtered version of test image. Such filter preserves the similar details and smooths the nonsimilar details of test image with respect to sample image. Due to this the difference between test image and its filtered version (d...

Wireless sensor networks (WSNs) contain numerous sensors. These sensors communicate with a vast number of small nodes via radio links. Therefore, WSNs have the most security attacks cause the limited cpacity of sensor nodes. The security attacks impact to many applications ...

Wireless sensor network becomes increasingly popular with the development in technology. It can provide enormous amount of services for the benefit of mankind. But due to its limitations in memory and other resources it is very much prone security attacks, selective forwarding attack is one that security attacks which can affect the whole sensor network communication. The variety of defense sch...

We test the Distributional Inclusion Hypothesis, which states that hypernyms tend to occur in a superset of contexts in which their hyponyms are found. We find that this hypothesis only holds when it is applied to relevant dimensions. We propose a robust supervised approach that achieves accuracies of .84 and .85 on two existing datasets and that can be interpreted as selecting the dimensions t...

We investigated the role of color in the feature integration process for global form perception. For this, we used a 2AFC noise masking paradigm to measure the color selectivity of the symmetry detection mechanism. In each trial, a vertical symmetric target was randomly presented in one of the two intervals while a random dot control, in the other. The observers' task was to determine which int...

We evaluated a widely used culture-based method for detection of livestock-associated meticillin-resistant Staphylococcus aureus (LA-MRSA) in samples collected from pigs and the environment inside pig stables in Denmark and Norway. Selective enrichment in tryptic soy broth containing cefoxitin and aztreonam led to a high ratio of false-negative results (26%; 57/221). On this basis, we recommend...