Other

Harvard College

Michael H Kester

Stratos Idreos

Denys Francois Leclerc

Thanh P Trung

Brian Hentschel

Edward A Dylke

Various approaches for accelerating data access to a computer memory and predicate evaluation includes storing, in the computer memory, (i) base data as multiple base columns, (ii) multiple sketched columns each corresponding to a base column in the base data and having smaller code values compared thereto, and (iii) a compression map for mapping one or more base columns to the corresponding sketched column; applying the compression map to a query having a predicate; determining data on the sketched column that satisfies the predicate; and evaluating the predicate based at least in part on the determined data on the sketched column without accessing the base column in the base data.

Rapid and robust predicate evaluation

Storage and display case

A method for determining the concentration of hydrogen ion, organic anionic species and anionic species selected from the group consisting of OH , CO , HS , ClO , SO , S O , polysulphide and peroxide in an aqueous sample solution, said method comprising subjecting said solution to near infrared radiation at a wavelength region of wave numbers selected from about 7,000 to 14,000 cm through a solution path length of at least 3 mm to obtain spectral data for said solution; obtaining comparative spectral data for said anionic species at known concentrations in aqueous solutions; and correlating by multivariate calibration the relationships between said spectral data of said sample solution and said comparative spectral data to determine said concentration of said anionic species in said sample solution. The method is of particular value for use with pulp liquor determination and control in regards to the rapid and accurate determination of the OH , HS , CO , ClO , SO , S O , polysulphide and peroxide anionic species, hydrogen cation and of organic species present in pulp liquor.

Determination of ionic species concentration by near infrared spectroscopy

An adjustable, spring-loaded support mast which is affixed to standard flow hoods in order to maintain the hoods in position over ventilation registers and diffusers while air flow measurements and adjustments are made. The mast is adjustable in length to accommodate different ceiling heights and is spring loaded to facilitate the positioning and removal of the flow hood over the diffuser as well as to hold it firmly in place. This allows air flow adjustments to be made much more quickly and efficiently, saving time, expense and manpower.

Self-supporting flow hood

Growing community of inventors

Omaha, NE, United States of America

Michael H Kester