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Ubiquity of simplices in subsets of vector spaces over finite fields
(2007)
We prove that a sufficiently large subset of the $d$-dimensional vector space over a finite field with $q$ elements, $ {\Bbb F}_q^d$, contains a copy of every $k$-simplex. Fourier analytic methods, Kloosterman sums, and ...
Sums and products in finite fields: an integral geometric viewpoint
(2007)
We prove that if $A \subset {\Bbb F}_q$ is such that $$|A|>q^{{1/2}+\frac{1}{2d}},$$ then $${\Bbb F}_q^{*} \subset dA^2=A^2+...+A^2 d \text{times},$$ where $$A^2=\{a \cdot a': a,a' \in A\},$$ and where ${\Bbb F}_q^{*}$ ...
What Clinical Findings Can Be Used to Diagnose Deep Venous Thrombosis?
(Family Physicians Inquiries Network, 2004)
No single clinical finding can accurately diagnose DVT. [Strength of recommendation: A, based on a systematic review of homogeneous validating cohort studies with good reference standards.] However, when organized into ...
Which Antidepressant Is Best to Avoid Sexual Dysfunction?
(Family Physicians Inquiries Network, 2004)
Bupropion (Wellbutrin), nefazodone (Serzone), amitriptyline (Elavil), and moclobemide (Manerix, a reversible inhibitor of monoamine oxidase type A not available in the United States) have been shown to cause less sexual ...
Does Screening for Tuberculosis in Children Decrease Morbidity or Mortality?
(Family Physicians Inquiries Network, 2004)
Routine screening of low-risk children for tuberculosis infection before entering kindergarten is not necessary. [Strength of recommendation: C] Targeted screening of high-risk children for tuberculosis infection using the ...
Are Selective COX-2 Inhibitors as Effective as NSAIDs in Patients with Rheumatoid Arthritis?
(Family Physicians Inquiries Network, 2004)
The efficacy of COX-2 inhibitors is similar to that of nonselective NSAIDs in reducing the symptoms of rheumatoid arthritis. [Strength of Recommendation: A]
Do vitamin C supplements reduce mortality in patients with cardiovascular disease?
(Family Physicians Inquiries Network, 2004)
Vitamin C, when taken as a dietary supplement, does not appear to reduce mortality in patients with cardiovascular disease. [Strength of recommendation: B, based on reviews of cohort studies and a single randomized controlled ...
Does Lidocaine-Prilocaine Cream (EMLA) Decrease the Pain of Neonatal Circumcision?
(Family Physicians Inquiries Network, 2004)
EMLA cream reduces the pain experienced by newborns during circumcision compared with placebo. [Strength of recommendation: A, based on a systematic review of randomized controlled trials (RCTs)]. However, dorsal penile ...
Does a Low-Sodium Diet Reduce Blood Pressure?
(Family Physicians Inquiries Network, 2004)
Reducing sodium intake does lead to a slightly lower average blood pressure. However, no evidence from controlled trials proves that reducing sodium intake decreases morbidity or mortality, or proves that modest sodium ...
Do intercontraction intervals predict when a woman at term should seek evaluation of labor?
(Family Physicians Inquiries Network, 2009)
A reduction in the intercontraction interval is associated with active labor (strength of recommendation [SOR]: B, cohort study). Most primigravidas who have had regular contractions for 2 hours and multigravidas who have ...
Optical Constants of Silicon Carbide for Astrophysical Applications. II. Extending Optical Functions from Infrared to Ultraviolet Using Single-Crystal Absorption Spectra
(American Astronomical Society, 2009)
Laboratory measurements of unpolarized and polarized absorption spectra of various samples and crystal structures of silicon carbide (SiC) are presented from 1200-35000 cm−1 (λ ∼ 8-0.28 μm) and used to improve the
accuracy ...