Abstract: There is provided a self cleaning filter assembly for use in an exhaust system, including: a casing for placement in the path of an air flow, the casing containing: a first filter; a second filter; a barrier for placement adjacent to the casing to prevent a cleaning fluid from dripping from the first filter and out from the casing; and a plurality of spray outlets for dispersion of fluid within the casing and onto the filters. The plurality of spray outlets create droplets of the cleaning fluid of a size able to combine with droplets of a contaminant to form combined droplets in the air flow and wherein the first filter and the second filter captures droplets of the contaminant and droplets from the spray outlets. A circulation system for use with the filter assembly is also disclosed.

Abstract: In one preferred embodiment, job information and candidate information are compared to select a set of eligible candidates from a plurality of job candidates. A weight is assigned to each of a first plurality of parameters included with the job information. The candidate information is compared with the job information to identify for each eligible candidate a subset of the first plurality of parameters satisfied by each eligible candidate. The candidate information pertaining to the set of eligible candidates is communicated to the employer, and the job information is communicated to one or more of the eligible candidates. The eligible candidates are compared as a function of the weights assigned to the parameters within the candidates' respective subsets. One candidate is selected from the set of eligible candidates to fill the job opening. A placement fee is transferred from the employer to a placement agency, and at least a portion of the placement fee is transferred to the selected one candidate.

Abstract: A self-cleaning exhaust system including a top, a front wall, a rear wall, and side walls extending between the rear wall and the front wall. A baffle depending from the top intermediate the front wall and the rear wall. A plate extending forwardly from the rear wall to forwardly of the baffle. A first filter is located in an air flow path. A first spray outlet is located in the air flow path before the first filter for providing a first cleaning spray into the air flow so that the air flow draws the cleaning spray onto a first surface of the first filter. A method of removing contaminants is also disclosed.