نتایج جستجو برای: level crossing

تعداد نتایج: 1104591  

Journal: :Journal of Statistical Mechanics: Theory and Experiment 2011

2015
S. Saponara L. Fanucci R. Cassettari P. Ruggiero M. Righetto

The paper presents an innovative networked radar system for detection of obstacles in a railway level crossing scenario. This Monitoring System (MS) is able to detect moving or still obstacles within the railway level crossing area automatically, avoiding the need of human presence for surveillance. The MS is also connected to the National Railway Information and Signaling System to communicate...

Journal: :Physical review letters 2002
O Waldmann R Koch S Schromm P Müller I Bernt R W Saalfrank

At low temperatures, the magnetization of the molecular ferric wheel NaFe6 exhibits a step at a critical field B(c) due to a field-induced level crossing. By means of high-field torque magnetometry we observed a hysteretic behavior at the level crossing with a characteristic butterfly shape which is analyzed in terms of a dissipative two-level model. Several unusual features were found. The non...

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