MAGIC (Major Atmospheric Gamma Imaging Cherenkov telescope) is presently the largest ground-based gamma ray telescope. MAGIC has been taking data regularly since October 2004 at the Roque de los Muchachos Observatory on the island of La Palma. In this paper the MAGIC telescope status, its performances and some preliminary results on observed gamma ray sources are presented. c Copyright owned by...

Update propagation in deductive databases can be implemented by combining rule rewriting and fixpoint computation, analogous to the way how query answering is performed via Magic Sets. For efficiency reasons, bottom-up propagation rules have to be subject to Magic rewriting, thus possibly loosing stratifiability. We propose to use the soft stratification approach for computing the well-founded ...

Luxury retail strategy differs from other retail strategies not merely in distinctive formulations of product, price, distribution, and appeals to customer distinction. Instead, it increasingly stands or falls on the legitimacy of a charismatic creative director. The director offers an aesthetic brand ideology. Luxury retail draws on the principles of art and magic to assemble the charismatic p...

Various graph labelings that generalize the idea of a magic square have been discussed. In particular a magic labeling on a graph with v vertices and e edges will be defined as a one-to-one map taking the vertices and edges onto the integers 1, 2, ... , v+e with the property that the sum of the label on an edge and the labels of its endpoints is constant independent of the choice of edge. Prope...

This paper reports the initial findings from a National Science Foundation supported study of IT personnel transition. We used the revealed causal mapping method [1] to elicit barriers, enablers, and examples of IT personnel transition. This paper reveals new knowledge and insight into the dependent variables of transition. The data is presented in the form of respondent quotes and interpretati...

In this paper, a generalization of a group-magic graph is introduced and studied. Let R be a commutative ring with unity 1. A graph G = (V,E) is called R-ring-magic if there exists a labeling f : E → R−{0} such that the induced vertex labelings f : V → R, defined by f(v) = Σf(u, v) where (u, v) ∈ E, and f : V → R, defined by f(v) = Πf(u, v) where (u, v) ∈ E, are constant maps. General algebraic...

Citation: Prandini E, Domínguez A, Fallah Ramazani V, Hassan T, Mazin D, Moralejo A, Nievas Rosillo M, Vanzo G and Vazquez Acosta M for the MAGIC Collaboration (2017) Probing the Diffuse Optical-IR Background with TeV Blazars Detected with the MAGIC Telescopes. Front. Astron. Space Sci. 4:50. doi: 10.3389/fspas.2017.00050 Probing the Diffuse Optical-IR Background with TeV Blazars Detected with ...

The MAGIC 17m diameter Cherenkov telescope will be upgraded with a second telescope with advanced photon detectors and ultra fast readout within the year 2007. The sensitivity of MAGIC-II, the two telescope system, will be improved by a factor of 2. In addition the energy threshold will be reduced and the energy and angular resolution will be improved. The design, status and expected performanc...

The magic number silica clusters [(SiO(2))(n)O(2)H(3)](-) with n = 4 and 8 have been observed in the XeCl excimer laser (308 nm) ablation of various porous siliceous materials. The structural origin of the magic number clusters has been studied by the density functional theoretical calculation at the B3LYP/6-31G** level, with a genetic algorithm as a supplementary tool for global structure sear...