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Fortunately , modern computers , when properly used , make this task easier . Information security can ensure that information is accessible when required ( availability ) , that information is accessible exclusively by authorized users ( confidentiality ) , and that information not become changed by accident or accessed by unauthorised users ( integrity ) . Contracting indigent defense services , when done correctly , can be extremely productive . Distribution of culture used to be expensive , decentralization ( ie the Internet ) has made it virtually free , esp when done on a small scale . Use of self-reports by individuals as a method to obtain information about substance use and abuse versus use of data provided by clinicians ( health professionals , hospital staff ) has been found to be useful and reliable when done with the general population . The fourth , robbed of a wife when Columbia crashed , has dedicated his career to making future spacecraft safer . A friend is insisting that the onions can have one calorie count when they are raw , but when cooked , they release their natural sugars and are then higher in calories . The Department monitors students ' academic progress carefully , and takes action when required .