In the affine plane AG(2, q) the point (x, y) is incident with the line Y = mX + α if and only if α = −mx + y. Hence α is a root of R(T,m) of multiplicity k if and only if the line Y = mX + α is incident with k points of the set A. This observation allows one to look at a problem of the following type: Given a subset of points of the affine plane that has restricted intersection properties with...

BACKGROUND In 2002, Moseley et al published a randomized controlled trial (RCT) that showed no difference between knee arthroscopy and placebo for patients with osteoarthritis (OA). We wanted to assess the impact of the trial on clinical practice in the United States. PURPOSE/HYPOTHESIS To evaluate changes in knee arthroscopy practice before and after publication of the article by Moseley et ...

Being a derivative of the famous IEEE 802.11 family of standards [1], which was originally targeted at indoor wireless communication, the IEEE 802.11p amendment for vehicular communication [2] still bears certain assumptions about the wireless channel which do not apply for vehicular scenarios. As IEEE standardization is finished, international harmonization of local standards is already on the...

BACKGROUND Although resident physicians often teach, few trials have tested interventions to improve residents' teaching skills. A pilot trial in 2001-2002 found that 13 trained resident teachers taught better than did untrained control residents. OBJECTIVE To determine whether a longitudinal residents-as-teachers curriculum improves residents' teaching skills. DESIGN Randomized, controlled...

535 Inconsistencies in how clinical trial information is disseminated and what information is given can adversely affect the number of patients enrolled (Avis, Smith, Link, Hortobagyi, & Rivera, 2006; Cox, 2002; Cox & McGarry, 2003; Ellis, Butow, & Tattersall, 2002; Ellis, Butow, Tattersall, Dunn, & Houssami, 2001; Hutchison & Campbell, 2002; Stevens & Ahmedzai, 2004; Wright et al., 2004), pati...

Background: The incidence of oral cancers is different worldwide. Objective: To evaluate the rate of oral cancers in Khouzestan Province. Patients and Methods: The data were collected from the pathologic reports of pathology laboratories all around the province, during the time period of 1992-2002. Results: Among the total received specimens, 305 cases of oral cancers were detected. One hundred...