We present a natural orbital-based implementation of the intermediate Hamiltonian Fock space coupled-cluster method for (1, 1) sector space. The use orbitals significantly reduces computational cost and can automatically choose an appropriate set active orbitals. new retains charge transfer separability original gives excellent performance valence, Rydberg, charge-transfer excited states. It of...

We report on the Chandra X-ray Observatory ACIS-S3 imaging observation of the Galactic globular cluster M4 (NGC6121). We detect 12 X-ray sources inside the core and 19 more within the cluster halfmass radius. The limiting luminosity of this observation is Lx ≈ 10 29 erg s for sources associated with the cluster, the deepest X-ray observation of a globular cluster to date. We identify 6 X-ray so...

In our search for “hidden” AGN we present results from a Chandra observation of the nearby cluster Abell 2255. Eight cluster galaxies are associated with point-like X-ray emission, and we classify these galaxies based on their X-ray, radio, and optical properties. At least three are associated with active galactic nuclei (AGN) with no optical signatures of nuclear activity, with a further two b...

Business clusters play an important role in developing and improving the economic performance of countries and in promoting the welfare of people. Business development service providers (hereafter referred to as, BDSP) have a considerable role in providing specialized services pertinent to the conditions of active enterprises in clusters and in promoting their performance level in order to impr...

Wireless Sensor Network is easy to configure and deployment of network is also simple. It is very useful in gathering the information. As sensor device are small in size and it is operated by the battery which once die is not rechargeable, so minimizing energy consumption and node death rate is challenging issues in WSN. Once node die it can’t take part in information gathering which is not goo...

As part of a program to study the evolution of active galactic nuclei (AGN) in clusters of galaxies, we present our results for Abell 2104. A deep Chandra observation of this massive, z = 0.154 cluster reveals a significant X-ray point source excess over the expectations of blank fields, including eight X-ray counterparts with R < 20 mag. Our spectroscopy shows that all six X-ray sources associ...

We present very efficient active learning algorithms for link classification in signed networks. Our algorithms are motivated by a stochastic model in which edge labels are obtained through perturbations of a initial sign assignment consistent with a two-clustering of the nodes. We provide a theoretical analysis within this model, showing that we can achieve an optimal (to whithin a constant fa...

Data labeling is an expensive and time-consuming task. Choosing which labels to use is increasingly becoming important. In the active learning setting, a classifier is trained by asking for labels for only a small fraction of all instances. While many works exist that deal with this issue in non-streaming scenarios, few works exist in the data stream setting. In this paper we propose a new acti...