It is shown that every shifted simplicial complex ∆ is EKR of type (r, s), provided that the size of every facet of ∆ is at least (2s + 1)r − s. It is moreover proven that every i-near-cone simplicial complex is EKR of type (r, i) if depthK∆ > (2i + 1)r − i − 1, for some field K. Furthermore, we prove that if G is a graph having at least (2i + 1)r − i connected components, including i isolated ...

For a graph G, vertex v of G and integer r ≥ 1, we denote the family of independent r-sets of V (G) by I(r)(G) and the subfamily {A ∈ I(r)(G) : v ∈ A} by I v (G); such a subfamily is called a star. Then, G is said to be r-EKR if no intersecting subfamily of I(r)(G) is larger than the largest star in I(r)(G). If every intersecting subfamily of I v (G) of maximum size is a star, then G is said to...

Let G = (V,E) be a graph. For r ≥ 1, let I G be the family of independent vertex r-sets of G. For v ∈ V (G), let I G (v) denote the star {A ∈ I (r) G : v ∈ A}. G is said to be r-EKR if there exists v ∈ V (G) such that |A| ≤ |I G (v)| for any non-star family A of pair-wise intersecting sets in I G . If the inequality is strict, then G is strictly r-EKR. Let Γ be the family of graphs that are dis...

Knowledge forms an important asset in modern organisations. In order to gain and sustain competitive advantage knowledge has to be managed. One aspect of this is to use Electronic Knowledge Repositories (EKRs) in order to enhance knowledge sharing, reuse and learning. The success of an EKR is dependent on the quality of its content. For knowledge to be stored in an EKR, it has to be captured. O...

Knowledge forms an important asset in modern organizations. In order to gain and sustain competitive advantage knowledge has to be managed. One aspect of this is to use Electronic Knowledge Repositories (EKR) to enhance knowledge sharing, reuse and learning. The success of an EKR is dependent on the quality of its content. For knowledge to be stored in an EKR, it has to be captured. One crucial...

For a graph G, vertex v of G and integer r ≥ 1, we denote the family of independent r-sets of V (G) by I(r)(G) and the subfamily {A ∈ I(r)(G) : v ∈ A} by I v (G); such a subfamily is called a star. Then, G is said to be r-EKR if no intersecting subfamily of I(r)(G) is larger than the largest star in I(r)(G). If every intersecting subfamily of I v (G) of maximum size is a star, then G is said to...

PURPOSE To determine the accuracy of Pentacam Scheimpflug system Holladay equivalent keratometry (K) readings (EKRs) in calculating intraocular lens (IOL) power after corneal refractive surgery, including laser in situ keratomileusis (LASIK), photorefractive keratectomy (PRK), and radial keratotomy (RK). SETTING Jules Stein Eye Institute, David Geffen School of Medicine at University of Calif...

BACKGROUND In a prospective study to explore connections between clinical information delivery and information retrieval, 41 Canadian family physicians searched an electronic knowledge resource (EKR) as needed for practice. Research software, called the Information Assessment Method (IAM), prompted family physicians to report on the situational relevance, perceived cognitive impact and applicat...

PURPOSE To assess the repeatability of Equivalent Keratometry Readings (EKRs) obtained by the Pentacam HR (high resolution) in untreated and post-LASIK eyes, and to compare them with the keratometry (K) values obtained by other algorithms. METHODS In this prospective study, 100 untreated eyes and 71 post-LASIK eyes were included. In the untreated group, each eye received 3 consecutive scans u...

Dialysis adequacy indices that may be used to evaluate the efficiency of small-solute removal include Kt/V, fractional solute removal (FSR), and equivalent urea clearance (EKR). To analyze possible relationships between those indices, we used the two-compartment variable-volume urea kinetic model to simulate several dialysis modalities: hemodialysis (HD) performed three times or six times weekl...