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...

to doing this research daily interpolated temperature data from asfezari data base have been used. in order to recognition extreme cold days, the normalized temperature deviation index (ntdi) applied. then the index sorted according to extensive and severity and first 500 days selected for analysis. the geopotential height data extracted from www.esrl.noaa.gov data base. the thickness anomaly c...

introduction drought is a climatic hazard that occurs in the vast areas throughout the world. it causes physical suffering, economic losses, and environmental instability. drought is a slowly developing very which is phenomenon, and it is very difficult to determine when a dry spell becomes a drought or when a severe drought becomes an exceptional drought. it is usually starting with less drama...

We investigate theoretically the effects of a dynamically increasing medium index on optical-wave propagation in a rubidium condensate. A long pulsed pump laser coupling a D2 line transition produces a rapidly growing internally generated field. This results in a significant optical self-focusing effect and creates a dynamically growing medium index anomaly that propagates ultraslowly with the ...

The present paper introduces an innovative approach for anomaly-based IDS. The main idea is to construct model that characterizes the expected/acceptable behavior of the system using a clustering algorithm based on a 2-means clustering anomaly detection technique and a classification tree. Methods for clustering, training and detection are provided. The applied parameter, considered for perform...

in this paper, an improved method (improved an-eul) is presented. this method is based on the combination of the analytical signal and the euler deconvolution method. two important parameters such as location and approximate geometry of a magnetic source can be obtained using the conventional an-eul method. altitude of ground and height in upward continuation has been considered for depth deter...

We give a very simple derivation of the Atiyah-Patodi-Singer (APS) index theorem and its small generalization by using path integral massless Dirac fermions. It is based on Fujikawa's argument for relation between axial anomaly Atiyah-Singer theorem, only minor modification that sufficient to show APS theorem. The key ingredient identification boundary condition as physical state vectors in Hil...

A new class of lattice Dirac operators which satisfy the index theorem have been recently proposed on the basis of the algebraic relation γ5(γ5D) + (γ5D)γ5 = 2a(γ5D) 2k+2. Here k stands for a non-negative integer and k = 0 corresponds to the ordinary Ginsparg-Wilson relation. We analyze the chiral anomaly and index theorem for all these Dirac operators in an explicit elementary manner. We show ...

In the present paper a 2-means clustering-based anomaly detection technique is proposed. The presented method parses the set of training data, consisting of normal and anomaly data, and separates the data into two clusters. Each cluster is represented by its centroid one of the normal observations, and the other for the anomalies. The paper also provides appropriate methods for clustering, trai...

We study the low-energy dynamics of all N = 1 supersymmetric gauge theories whose basic gauge invariant fields are unconstrained. This set includes all theories whose matter Dynkin index is less than the index of the adjoint representation. We study the dynamically generated superpotential in these theories, and show that there is a W = 0 branch if and only if anomaly matching is satisfied at t...