Another R&D Anomaly?

The Proton - Spin Crisis : another ABJ anomaly ?

Another Look at the Pioneer Anomaly

The unexpected frequency shift observed by the Pioneer team, usually described as an anomalous acceleration, is discussed from the perspective of two alternative assumptions on the origin of cosmological redshift (Hubble effect). One is the standard assumption of an “expanding space”, the other is the assumption of an energy loss of photons without expanding space sections (“downscaling photons...

Financial centre bias: another puzzling anomaly in the IPO market?

This paper shows that firms from financial centres are more likely to go public than their provincial counterparts. The financial centre bias is analysed for 32 countries, including the European Union, the USA and Japan. It is particularly strong in countries with underdeveloped stock markets and closed corporate governance regimes, but it is still present in countries with the most developed s...

Another Fuzzy Anomaly Detection System Based on Ant Clustering Algorithm

Attacks against computer networks are evolving rapidly. Conventional intrusion detection system based on pattern matching and static signatures have a significant limitation since the signature database should be updated frequently. The unsupervised learning algorithm can overcome this limitation. Ant Clustering Algorithm (ACA) is a popular unsupervised learning algorithm to classify data into ...

RD-flatness and RD-injectivity

It is proved that every commutative ring whose RD-injective modules are Σ-RD-injective is the product of a pure semi-simple ring and a finite ring. A complete characterization of commutative rings for which each artinian (respectively simple) module is RD-injective, is given. These results can be obtained by using the properties of RD-flat modules and RD-coflat modules which are respectively th...