6,774 Hits in 1.8 sec

Three Euler's Sieves and a Fast Prime Generator (Functional Pearl) [article]

Ivano Salvo, Agnese Pacifico
2018 arXiv   pre-print
The Euler's Sieve refines the Sieve of Eratosthenes to compute prime numbers, by crossing off each non prime number just once.  ...  Their faithfulness with respect to the Euler's Sieve is up to costly stream unions imposed by the sequential nature of streams.  ...  The same holds for the O'Neill 'faithful' Sieve of Eratosthenes, and this explains why this program is so efficient when equipped with the pre-computed wheel w 4 , even though without w 4 it is clearly  ... 
arXiv:1811.09840v3 fatcat:ywnkj2uljzd2dm457zrv5i6evm

Trading time for space in prime number sieves [chapter]

Jonathan P. Sorenson
1998 Lecture Notes in Computer Science  
A prime number sieve is an algorithm that nds the primes up to a bound n. We present four new prime number sieves.  ...  , and two super-linear time sieves that use very little space.  ...  Acknowledgements Special thanks to Justin Hockemeyer, who, during the summer of 1997, implemented a version of Algorithm 3.1. He was supported by the Butler Summer Institute.  ... 
doi:10.1007/bfb0054861 fatcat:3a3mj3zlo5h4lp7kmrqfzcbfli


Sahar S Neham
Based on wheel-tracking device results, it can be show that there was a significantdecrease in the value of the Rut Depth when using the Dates Kernel Powder as analternative to Lime Stone Dust as a filler  ...  Preparing 54 samples with dimension (400*300*50) mmat 110˚C compacted temperature to test it by Wheel-Tracking device at 40˚C, 50˚C and60˚C.  ...  Table 8 to Table 10 explain the value of Rut Depth (RD) according to the Wheel Tracker Device result as well as Fig.4 to Fig.6 shows the effect of DKP as a filler materials at deferent tested temperature  ... 
doi:10.32852/iqjfmme.vol18.iss2.94 fatcat:fx6hpmahhfef3aecj6kcnbihme

Page 476 of American Repertory of Arts, Science, and Manufactures Vol. 4, Issue 6 [page]

1842 American Repertory of Arts, Science, and Manufactures  
The combi- nation of sieves B, C and L, and fan wheels F and D, with a series of boxes and cutters, in the manner above arranged.—4th.  ...  The combination of the cutters in box No. 1 with fan wheel F, and sieve L, to cut and throw out the hull of the garlic, thus enabling the remaining cutters to cut or break the grains thereof without obstruction  ... 

Preparation of slab-shaped lactose carrier particles for dry powder inhalers by air jet milling

Xiang Kou, Lai Wah Chan, Changquan Calvin Sun, Paul Wan Sia Heng
2017 Asian Journal of Pharmaceutical Sciences  
The largest fraction of slab-like particles in the resulting powder was obtained at a classifier speed of 3000 rpm.  ...  The slab-like coarse carrier particles are expected to exhibit superior performance than commercial lactose due to their unique surface properties.  ...  Characterization Facility, which receives partial support from the NSF through the NNIN program.  ... 
doi:10.1016/j.ajps.2016.09.002 pmid:32104314 pmcid:PMC7032214 fatcat:gznffyhn3jhu5hwyc3s7h6jfme

Practical thermal performance correlations for molecular sieve and silica gel loaded enthalpy wheels

Jae-Weon Jeong, Stanley A. Mumma
2005 Applied Thermal Engineering  
The two most common desiccant materials, silica gel and molecular sieve on aluminum substrate, were analyzed.  ...  The enthalpy wheel leaving air conditions can then be simply estimated by employing the practical effectiveness correlations.  ...  This model gives good result for a silica gel enthalpy wheel and a molecular sieve enthalpy wheel, although the uncertainty of the result increases to about ±5% for the molecular sieve enthalpy wheel.  ... 
doi:10.1016/j.applthermaleng.2004.07.018 fatcat:s7xl5ygpxjftzfb2nga4ynbbki

Page 152 of Journal of the American Ceramic Society Vol. 7, Issue 3 [page]

1924 Journal of the American Ceramic Society  
152 COX—STUDY OF PLASTICITY BY through a 60-mesh sieve and dried on plaster until stiff enough to work on the potter’s wheel.  ...  The calcined Florida clay was sensibly coarser than the i eee, —) North Carolina kaolin, IN] i a which explains the differ- C ence in the curves.  ... 

Page 58 of School Journal Vol. 47, Issue 3 [page]

1893 School Journal  
The turbine wheel is the only one of the water-wheels that is difficult to explain.  ...  If, then, Theophilus Thistle, the suc- cessful thistle-sifter, in sifting a sieveful of unsifted thistles, thrust three thousand thistles through the thick of this thumb, see that thou, in sifting a sieveful  ... 

Sieving for Pseudosquares and Pseudocubes in Parallel Using Doubly-Focused Enumeration and Wheel Datastructures [chapter]

Jonathan P. Sorenson
2010 Lecture Notes in Computer Science  
Our algorithm is based on the space-saving wheel data structure combined with doubly-focused enumeration, run in parallel on a cluster supercomputer.  ...  We extend the known tables of pseudosquares and pseudocubes, discuss the implications of these new data on the conjectured distribution of pseudosquares and pseudocubes, and present the details of the  ...  This will require a major restructuring of the code, and the removal of recursion in the wheel datastructure.  ... 
doi:10.1007/978-3-642-14518-6_26 fatcat:wfwdf47rvnbfnn7ahq2bdrlgzm

Practical assessment of grinding capacity and power consumption based on HGI and coal characteristics

Marko Obradovic, Dejan Radic, Dusan Todorovic, Aleksandar Jovovic, Nikola Karlicic, Miroslav Stanojevic
2019 Thermal Science  
Original scientific paper This paper analyzes the effects of coal grindability and its characteristics on the grinding capacity and power consumption for beater wheel  ...  The analysis of experimental results found that the grinding capacity has a negative correlation with the ash content in coal.  ...  The opposite conclusion is valid for cumulative retained on 90 [µm] sieve ( ). r = -0.633 . .  ... 
doi:10.2298/tsci180605376o fatcat:cvty7fhfsbhybavmxck4addusq

Page 90 of Finishing Today Vol. 49, Issue 6 [page]

1973 Finishing Today  
Some 30 on-the-job photos show the wheels used in a variety of ways on metal, plastics, and wood. Merit Abrasive Products Inc.  ...  strips on the wheels work around and over corners, hollow and fluted surfaces, and small openings.  ... 

Page 563 of The Merchant's Magazine and Commercial Review Vol. 18, Issue 5 [page]

1848 The Merchant's Magazine and Commercial Review  
building of a clothier, by the water-wheel of an old fulling-mill.  ...  The process, although somewhat curious, is exceedingly simple, and requires no expensive or complicated machinery. The whole process, as explained by Mr. Kennett, of St.  ... 

Page 363 of The Foundry Trade Journal Vol. 12, Issue 103 [page]

1910 The Foundry Trade Journal  
It is then graded in the usual way by sieves of varying mesh. For very fine qualities water is used as the separator.  ...  MAKING OF MODERN GRINDING-WHEELS. —Grinding-wheels are now more freely manufactured from carborundum.  ... 

Page 244 of Journal of the American Ceramic Society Vol. 14, Issue 4 [page]

1931 Journal of the American Ceramic Society  
CATALOGUES AND BULLETINS New method of grinding wheels. Norton Co. Abrasive Ind., 12 [1], 37 (1931).— This booklet explains the marking of the company’s products.  ...  Tables are included which give sieve standards, the weight per cu. ft. of abrasive grain, and the physical and chemical properties of refractory materials. Illustrated. E.P.R. Snagging equipment.  ... 

Role of Filler in the Enhancement of Properties of Bituminous Mixes: A Review

Ankita Dhiman
2017 International Journal for Research in Applied Science and Engineering Technology  
Depending upon the particle size fines can act as filler or extender of bitumen binder. Filler particles should be passed through 0.075mm sieve.  ...  When the quantity of filler increases in the mix, the Marshall properties of the bitumen mix may also improve directly up to certain limits.  ...  For coarse aggregates crushed rocks, gravel or other hard material retained on 2.36mm sieve may be used because its main function is to bear loads due to wheels, resist wear due to abrasion.  ... 
doi:10.22214/ijraset.2017.8162 fatcat:crvub47qibg7npf5omfr37sp34
« Previous Showing results 1 — 15 out of 6,774 results