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273 results about "Random order" patented technology

Computer managed learning system and data processing method therefore

A Computer Managed Learning System (CMLS) and process are provided by which an information database is produced by formatting the information to be learned into units; inputting the units of information into a computer system; storing the units of information in discrete locations on a storage media; and, assigning to each unit an Importance Rank, a provisional Individualized Difficulty Rank (IDR), a provisional Individualized Urgency Rank (IUR), a provisional Population Difficulty Rank (PDR) and a provisional Population Urgency Rank (PUR), which are also stored in discrete locations on storage media. When a student accesses the database, the student may elect to filter the units by specifying subject matter and/or ranges for IDR, Importance-rank and IUR, or combinations or permutations thereof. The system selects the appropriate units from the database according to the filtering criteria input by the student. The selected units are sorted into random order by the system and then displayed in that order by an output device. The student responds to the information displayed, a determination is made as to whether the student's response was satisfactory, and the system re-calculates the IDR, PDR, IUR and PUR values of the unit according to whether or not the student's response was satisfactory. The new IDR, PDR, IUR and PUR values are stored in their respective locations on the storage media to be used for subsequent filtering and tagging procedures, and the process is repeated as necessary until the required level of learning has been achieved.
Owner:OBRIEN DENIS RICHARD

Fluorochemical and polyoxyalkylene siloxane additive for coatings

Coating compositions comprise a coating base, a polyoxyalkylene siloxane additive and a fluorochemical wherein the polyoxyalkylene siloxane is of Formulae 1A, 1B, 1C, or 2:
(R2)3SiO[Si(R2)2O]y[Si(R2)(R1)O]x[Si(R2)2O]zSi(R2)3Formula 1A
(R2)3SiO[Si(R2)2O]x[Si(R2)2R1Formula 1B
R1(R2)2SiO[Si(R2)2O]x[Si(R2)2O]Si(R2)2R1Formula 1C
wherein
    • each R2 is independently H, alkyl, or aryl;
    • each R1 is a polyoxyalkylene group having the formula 3 as follows:
—CnR4pH2n−pQCmR5pH2m−pOZR3Formula 3
wherein
    • each R4 and R5 is independently H, alkyl, or aryl;
    • Q is CnHR4, aryl, CH2CH(OR4), CH2(CH2OR4), S, O, SO, SO2, SO2NR4, OC(O), OC(NR4), NHC(X)NH, or OC(X)NH or triazole;
    • Z is [C2H4O]a and [C3H6O]b in block or random order;
    • X is O or S;
    • m and n are each independently an integer of 2 to 8;
    • a is an integer of 0 to about 30; b is an integer of 0 to about 20; provided that a+b is from 1 to about 50;
    • each R3 is independently H, acyl, CH3, or a linear or branched alkyl or aryl group having 1 to about 20 carbon atoms;
    • w is an integer of from 1 to 3;
    • x is an integer of from 1 to about 20;
    • y is an integer of from 0 to about 20; and
    • z is an integer of from 0 to about 10;
and the fluorochemical is selected from the group consisting of a perfluoroalkyl ester, fluorinated urethane, fluoroalkyl phosphate or salt thereof, fluoroalkyl phosphate ester or salt thereof, a mixture of a fluoroalkyl phosphate and a glycol ester, and fluoroalkylpolyoxyethylene.
Owner:EI DU PONT DE NEMOURS & CO
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