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Many of the leading centers and / or individuals engaged in humanistic computing were represented ( see below for a selection ) and the value of being able to contact them all through electronic mail ( BITNET , etc. ) was emphasized . Any unpaid taxes and / or penalty from previous years will show as arrears due . Because trials are conducted at different times , with different samples of patients , by different investigators , employing different criteria and / or different interpretations of the same criteria , under different conditions ( dose , dosing regimen , etc. ) , quantitative estimates of treatment response and the timing of response may be expected to vary considerably from study to study . As researchers continue to identify risk and protective factors , the challenge becomes to understand how these factors interact to make individuals more or less vulnerable to not only initially trying drugs , but also abusing drugs and / or going on to become addicted to drugs . The substances being tested for may not always be illegal ; in the case of athletes , many performance enhancing drugs and / or steroids may also be screened for violation of rules , rather than laws . I take it that you do n't want to pay taxes and / or think they are too high . Available to work extended hours such as early morning , evenings / nights and / or weekends as necessary at critical times and for system upgrades , or to provide technical staff coverage for essential services outside of traditional business hours . Anytime after the expiration of one month following the issuance of the Notice of Tax Sale , if the taxes and / or penalties remain due and unpaid , the assessed owner must be served with a notice stating that the real property will be sold in accordance with the Real Property Tax Act and the regulations , if the property is to be prepared for tax sale . Unlike addiction itself , treatment is a positive process , involving a variety of support systems that systematically help lead individuals to successful , fulfilling lives without drugs and / or alcohol .