The Efficient Market Hypothesis, which was brought by Fama in 1970, accepts that all accessible information is fully reflected the prices of securities, investors make rational decisions, therefore, above-average returns cannot be obtained market, and market an efficient market. aim study to determine whether January anomaly even occurs BIST100 Index investigate there a BIST Corporate Governanc...

We propose a novel non-parametric adaptive anomaly detection algorithm for high dimensional data based on rank-SVM. Data points are first ranked based on scores derived from nearest neighbor graphs on n-point nominal data. We then train a rank-SVM using this ranked data. A test-point is declared as an anomaly at α-false alarm level if the predicted score is in the α-percentile. The resulting an...

Drought is a period of abnormally dry weather with a serious shortage of water supply. Drought indices can be an advantageous indicator to assess drought for taking further response actions. However, drought indices based on ground meteorological measurements could not completely reveal the land use effects over a regional scale. On the other hand, the satellite-derived products provide consist...

Rainfall and evapotranspiration are the two most popular climatic factors which have crucial function on agricultural production. Rainfall can be directly measured easily in an area but evapotranspiration is estimated from weather data. In this study reference evapotranspiration ETo was estimated using Penman–Monteith equation. Monthly rainfall and evapotarnspiration were plotted and compared i...

The standard 802.11 presents a Medium Access Control (MAC) anomaly when stations with different data rates operate at the same Access Point. This paper presents a strategy for using SNR to control the contention window and consequently mitigate the anomaly. Simulations using Network Simulators (NS) are presented to demonstrate the anomaly and to evaluate the mitigation anomaly strategy. The str...

Satellite observations play an important role in characterization of the interannual variation of vegetation. Here, we report anomalies of two vegetation indices for Northern Asia (40jN–75jN, and 45jE–179jE), using images from the SPOT-4 VEGETATION (VGT) sensor over the period of April 1, 1998 to November 20, 2001. The Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index ...

We consider the mixed gravitational-Yang-Mills anomaly as the coupling between the K-theory and K-homology of a C∗-algebra crossed product. The index theorem of Connes-Moscovici allows to compute the Chern character of the K-cycle by local formulae involving connections and curvatures. It gives a topological interpretation to the anomaly, in the sense of noncommutative algebras. MSC91: 19D55, 8...

This paper discusses our research in developing a generalized and systematic method for anomaly detection. The key ideas are to represent normal program behaviour using system call frequencies and to incorporate probabilistic techniques for classification to detect anomalies and intrusions. Using experiments on the sendmail system call data, we demonstrate that concise and accurate classifiers ...