Numerical Carpets
نویسنده
چکیده
1 June 1, 1998 Introduction It has long been known that modular arithmetic often produces interesting numerical patterns. These patterns can be made easier to comprehend and more interesting by rendering them as images with colors associated with numerical values. The example most often cited is Pascal’s Triangle, which exhibits the binomial coefficients. If you take the coefficients modulo m for various m, you get different but interesting patterns. Figures 1 through 3 show a portion of Pascal’s Triangle for m = 2, 3, and 5, using m uniformly spaced shades of gray from black (for 0) to white (for m–1).
منابع مشابه
Disodium octaborate tetrahydrate (DOT) application and vacuum cleaning, a combined strategy to control house dust mites.
BACKGROUND The effectiveness of acaricides in homes is controversial. OBJECTIVE To determine whether disodium octaborate tetrahydrate (DOT) combined with vacuuming lowers dust mite numbers and their allergens in carpets and sofas. METHODS A 6-month study was carried out with 93 homes, which were randomized into three groups: (i). active, received DOT; (ii). placebo, received water; and (iii...
متن کاملHigh isolation rates of multidrug-resistant bacteria from water and carpets of mosques
OBJECTIVE There is little information regarding the isolation of antimicrobial-resistant potentially pathogenic bacteria from water and carpets of mosques worldwide. The objective of the present investigation is to determine the bacteriological quality of water and carpets of mosques in Elkhomes city in Libya. METHODS Potentially pathogenic bacteria were isolated from water samples (n=44) and...
متن کاملIsolation of antibiotic-resistant pathogenic and potentially pathogenic bacteria from carpets of mosques in Tripoli, Libya
OBJECTIVE Isolation of potentially pathogenic bacteria from carpets in hospitals has been reported earlier, but not from carpets in mosques. The aim of the present study is to determine the pathogenic and potentially pathogenic bacteria that may exist on the carpets of mosques in Tripoli, Libya. METHODS Dust samples from carpets were collected from 57 mosques in Tripoli. Samples were examined...
متن کاملAssouad Dimension of Self-affine Carpets
We calculate the Assouad dimension of the self-affine carpets of Bedford and McMullen, and of Lalley and Gatzouras. We also calculate the conformal Assouad dimension of those carpets that are not self-similar.
متن کاملFeature Extraction of the Wear Label of Carpets by Using a Novel 3D Scanner
In this paper we present a novel 3D scanner to capture the texture characteristics of worn carpets into images of the depth. We first compare our proposed scanner to a Metris scanner previously attempted for this application. Then, we scan the surface of samples from the standard EN1471 using our proposed scanner. We found that our proposed scanner offers additional benefits because it has been...
متن کاملRealization of optical carpets in the Talbot and Talbot-Lau configurations.
Talbot and Talbot-Lau effects are frequently used in lensless imaging applications with light, ultrasound, x-rays, atoms and molecules--generally in situations where refractive optical elements are non-existent or not suitable. We here show an experimental visualization of the intriguing wave patterns that are associated with near-field interferometry behind a single periodic diffraction gratin...
متن کامل