BACKGROUND Through the AMI-QUEBEC Study we sought to describe delays to reperfusion therapy for ST-segment elevation myocardial infarction (STEMI) and to identify factors associated with prolonged delays. METHODS We reviewed the charts of all consecutive patients with STEMI admitted to 17 hospitals in the province of Quebec in 2003 to obtain data on the time from presentation to reperfusion t...

PURPOSE To determine the sensitivity of the Seoul National University (SNU) computerized color vision test for detecting diabetic macular edema. METHODS From May to September 2003, a total of 73 eyes of 73 patients with diabetes mellitus were examined using the SNU computerized color vision test and optical coherence tomography (OCT). Color deficiency was quantified as the total error score o...

We determine the maximal cocliques of size ≥ 4q2 + 5q + 5 in the Kneser graph on point-plane flags in PG(4, q). The maximal size of a coclique in this graph is (q2 + q + 1)(q3 + q2 + q + 1).

background: this study addresses the null hypothesis that there is no expansion of heterotopic ossification (ho) in the elbow beyond what can be seen early on.   methods: the area of ho was measured on lateral radiographs of 38 consecutive patients that had operative treatment of ho between 2000 and 2013. measurements from radiographs obtained between 3 to 7 weeks were compared to measurements ...

In this paper we prove that there exist 4—{k2; 1/2k(k—1); k(k—2)} SDS, regular Hadamard matrices of order 4k2, and SBIBD(4k2, 2k2 + k, k2 + k) for k = 47, 71, 151, 167, 199, 263, 359, 439, 599, 631, 727, 919, 5q1, 5q2N, 7q3, where ql, q2 and q3 are prime power such that ql ≡ 1(mod 4), q2 ≡ 5(mod 8) and q3 ≡ 3(mod 8), N = 2a3bt2, a, b = 0 or 1, t ≠ 0 is an arbitrary integer. We find new SBIBD(4k...

In the constrained longest common subsequence (CLCS) problem, we are given two sequences X , Y and the constrained sequence P in run-length encoded (RLE) format, where |X| = n, |Y | = m and |P | = r and the numbers of runs in RLE format are N , M and R, respectively. In this paper, we show that after the sequences are encoded, the CLCS problem can be solved in O(NMr+ r × min{q1, q2} + q3) time,...

We characterize the finite Veronesean Hn ⊆ PG(n(n + 2), q) of all Hermitian varieties of PG(n, q2) as the unique representation of PG(n, q2) in PG(d, q), d≥n(n+2), where points and lines of PG(n, q2) are represented by points and ovoids of solids, respectively, of PG(d, q), with the only condition that the point set of PG(d, q) corresponding to the point set of PG(n, q2) generates PG(d, q). Usi...

We develop a method for constructing the Heavy Baryon Chiral Perturbation Theory (HBChPT) Lagrangian, to a given chiral order, within HBChPT. We work within SU(2) theory, with only the pion field interacting with the nucleon. The main difficulties, which are solved, are to develop techniques for implementing charge conjugation invariance, and for taking the nucleon on shell, both within the non...

In this paper we use Gröbner bases for the implicitization of rational parametric curves and surfaces in 3D-space. We prove that the implicit form of a curve or surface given by the rational parametrization x1 := p1 q1 x2 := p2 q2 x3 := p3 q3 , where the p’s and q’s are univariate polynomials in y1 or bivariate polynomials in y1, y2 over a field K, can always be found by computing GB({q1 · x1 −...