In this paper we present a model for quality assessment over linked data. This model has been designed to align with emerging standards for provenance on the Web to enable agents to reason about data provenance when performing quality assessment. The model also enables quality assessment provenance to be represented, thus allowing agents to make decisions about re-use of existing assessments. W...

Deutschland steht 2009 vor einem überaus schwierigen Jahr. Vorausschauende Manager schielen aber weniger auf die nicht beeinflussbaren Eckdaten, sondern finden heraus, welche Verbesserungspotenziale in ihrer Firma schlummern. Eine Alternative zu Cost-Cutting-Programmen kann die Optimierung des Projektmanagements sein. Ein kritischer Blick auf den Markt der dafür erforderlichen Projektmanagement...

We describe the synthesis, characterization, aqueous behavior, and catalytic activity of a new generation of Fe(III)-TAML (tetraamido macrocycle ligand) activators of peroxides (2), variants of [Fe{(OC)(2)(o,o'-NC(6)H(4)NCO)(2)CMe(2)}(OH(2))(-)] (2d), which have been designed to be especially suitable for purifying water of recalcitrant oxidizable pollutants. Activation of H(2)O(2) by 2 (k(I)) ...

We address a supersaturation problem in the context of forbidden subposets. A family F of sets is said to contain the poset P if there is an injection i : P → F such that p ≤P q implies i(p) ⊂ i(q). The poset on four elements a, b, c, d with a, b ≤ c, d is called a butterfly. The maximum size of a family F ⊆ 2 that does not contain a butterfly is ( n bn/2c ) + ( n bn/2c+1 ) as proved by De Boni...

A central problem in coding theory is to determine Aq(n, 2e + 1), the maximal cardinality of a q-ary code of length n correcting up to e errors. When e is fixed and n is large, the best upper bound for A(n, 2e+1) (the binary case) is the well-known Johnson bound from 1962. This however simply reduces to the sphere-packing bound if a Steiner system S(e + 1, 2e + 1, n) exists. Despite the fact th...

(b) Let PX(1) = p = 1−PX(0). Then I(X∧Y ) = H(Y )−H(Y |X) = h(p2)−p. Differentiation yields that I(X ∧ Y ) is maximized by p = 2e−2 1+e−2 . Hence, the maximizing input pmf on {0, 1} is ( 1−e−2 1+e−2 , 2e−2 1+e−2 ) and C = h ( e−2 1+e−2 ) − 2e−2 1+e−2 bits/channel use. ∗Q2,3,4,6,7 and their solutions are from the Information Theory course taught by Prof. Prakash Narayan at the University of Mary...

Recent studies have identified a Pacific lineage (2E) of JC polyomavirus (also designated as JC virus or JCV) that occurs in both Island Southeast Asia and Oceania, but not in mainland Asia. It has been postulated that this lineage traveled with Austronesian-speaking people who are now spread throughout Island Southeast Asia and Oceania (excluding Australia and inland and southern New Guinea). ...

in this paper, new (2e, 2'e)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was prepared in good yield by condensation reaction of acetophenone with bisaldehyde (1a) in ethanolic naoh solutions at room temperature. the (2e, 2'e)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-...