نتایج جستجو برای: anomaly detection

تعداد نتایج: 591345  

2003
Gastón E. Giribet

The Jackiw-Teitelboim gravity with non-vanishing cosmological constant coupled to Liouville theory is considered as a non-critical string on d dimensional Minkowski space-time. It is discussed how the presence of cosmological constant leads to consider additional constraints on the parameters of the theory, even though the conformal anomaly is idependent of the cosmological constant. The constr...

2015
Weizhong Yan Lijie Yu

Monitoring gas turbine combustors' health, in particular, early detecting abnormal behaviors and incipient faults, is critical in ensuring gas turbines operating efficiently and in preventing costly unplanned maintenance. One popular means of detecting combustors’ abnormalities is through continuously monitoring exhaust gas temperature profiles. Over the years many anomaly detection technologie...

Journal: :Journal of Big Data 2022

Abstract Anomaly detection is a relevant problem in the area of data analysis. In networked systems, where individual entities interact pairs, anomalies are observed when pattern interactions deviates from patterns considered regular. Properly defining what regular entail relies on developing expressive models for describing interactions. It crucial to address anomaly networks. Among many well-...

1991
Zhu Yang

We generalize the method of quantizing effective strings proposed by Polchinski and Strominger to superstrings. The Ramond-Neveu-Schwarz string is different from the Green-Schwarz string in non-critical dimensions. Both are anomaly-free and Poincare invariant. Some implications of the results are discussed. The formal analogy with 4D (super)gravity is pointed out.

2006
Katrin Becker Melanie Becker Ji-Xiang Fu Li-Sheng Tseng Shing-Tung Yau Cynthia W. Mitchell

We show that six-dimensional backgrounds that are T 2 bundle over a Calabi–Yau two-fold base are consistent smooth solutions of heterotic flux compactifications. We emphasize the importance of the anomaly cancellation condition which can only be satisfied if the base is K3 while a T 4 base is excluded. The conditions imposed by anomaly cancellation for the T 2 bundle structure, the dilaton fiel...

2004
Andreas Rathke

The Doppler-tracking data of the Pioneer 10 and 11 spacecraft show an unmodelled constant acceleration in the direction of the inner Solar System. An overview of the phenomenon, commonly dubbed the Pioneer anomaly, is given and the possibility for an experimental test of the anomaly as a secondary goal of an upcoming space mission is discussed using a putative Pluto orbiter probe as a paradigm.

2014
Anton Kapustin Ryan Thorngren

We study ’t Hooft anomalies for a global discrete internal symmetry G. We construct examples of bosonic field theories in three dimensions with a nonvanishing ’t Hooft anomaly for a discrete global symmetry. We also construct field theories in three dimensions with a global discrete internal symmetry G1 × G2 such that gauging G1 necessarily breaks G2 and vice versa. This is analogous to the Adl...

2000
R Foot

Is the ν µ → ν s oscillation solution to the atmospheric neutrino anomaly excluded by the superKamiokande data? Abstract Recently the SuperKamiokande collaboration have claimed that their data exclude the ν µ → ν s solution to the atmospheric neutrino anomaly at more than 99% C.L. We critically examine this claim.

2001
V. I. Tkach

Trace anomaly for conformally invariant higher derivative 4D scalar-dilaton theory is obtained by means of calculating divergent part of one-loop effective action for such system. Its applications are briefly mentioned.

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