Abstract: A method of matching a job-seeking driver with a driving job is implemented with the aid of a data-processing system including a computer memory and a job-match algorithm. The data-processing system receives data relating to driver jobs for which drivers are sought and stores in the computer memory a uniquely-identifiable job-data file corresponding to each driver job for which data has been received. Additionally, the data-processing system receives driver-related data associated with job-seeking drivers and stores in the computer memory a uniquely-identifiable driver-data file corresponding to each job-seeking driver for which data has been received. A stored job-date file is algorithmically matched with a stored driver-data file based on a predetermined set of job-match threshold criteria. Information relating to a stored job-date file to which a driver-date file is algorithmically matched is rendered available to the driver associated with the driver-date file through an output interface.

Abstract: Improved hydraulic cement mixes are made by incorporating into such mixes an admixture comprising at least one acetic acid ester of a glycol in an amount sufficient to increase the compressive strength of products made from such mixes. In portland-type cement mixes, these admixtures also act as set accelerators. In high-alumina cement mixes, the admixtures not only increase strength but also inhibit the spontaneous loss of strength which is generally characteristic of high-alumina cements. A preferred admixture is ethylene glycol diacetate in an amount of up to about 3.0% by weight based upon the weight of the cement, preferably in an amount of between about 0.01% and 2.0% by weight.

Abstract: A solid state controller for an automatic irrigation sprinkler system is disclosed. Irrigation information is maintained in and acted upon by solid state logic and control circuit means. Initialization and re-parameterization of the irrigation information is accomplished with a keyboard input in conjunction with an alphanumeric display system indicating time of day, day of week, station number, run time associated with each station, and program type associated with each day of the week. A dual power supply is included being run normally from a commercial AC source to provide the proper voltage levels for both the logic and control circuitry and the sprinkler system station valves. Additionally, battery backup is provided. In the event of loss of AC power, the controller uses the battery to maintain only the real-time clock, turning off all other functions to conserve energy. Upon the resumption of AC power, normal operation is continued without loss of time continuity.

Abstract: A hydraulic cement mix including hydraulic cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising glycerophosphoric acid or its salts, such as calcium, magnesium, potassium and sodium glycerophosphate, wherein the additive is present in an amount sufficient to increase the strength of the mix when hardened, generally in an amount of up to 0.2% by weight, preferably in an amount of between about 0.005% by weight and 0.2% by weight based upon the weight of the cement, with the range 0.01% to 0.1% by weight also being preferred.

Abstract: A hydraulic cement mix including a Portland type cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising an alkali or alkaline earth fluotitanate, wherein the additive is present in an amount sufficient to retard beneficially the setting and hardening of the mix. The additive is preferably selected from the group comprising calcium, potassium and sodium fluotitanate and is present in an amount of between about 0.005% by weight and 1.0% by weight based upon the weight of the cement.

Abstract: A hydraulic cement mix including hydraulic cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising at least one acetic acid ester of glycerin, wherein the additive is present in an amount sufficient to increase the strength of the mix when hardened. The additive is preferably selected from the group comprising monoacetin, diacetin, triacetin, and mixtures thereof and is present generally in an amount of up to 2.0% by weight based upon the weight of the cement, usually between 0.01% and 2.0% by weight.

Abstract: A hydraulic cement mix including hydraulic cement, such as Portland type or high alumina cement, aggregate, sufficient water to effect hydraulic setting of the cement, and an additive comprising the fruit of the carob tree, Ceratonia siliqua, wherein the additive is present in an amount sufficient to increase the compressive strength of the mix when hardened. The additive may take many forms, but is preferably selected from the group comprising raw or roasted, carob pods or beans, extracts of the pods or beans, or combinations thereof and is present in an amount of up to about 0.25% based upon the weight of the cement, preferably between about 0.1% by weight and 0.1% by weight based upon the weight of the cement, with between 0.01% by weight and 0.05% by weight based upon the weight of the cement being an additional preferred range.