INTRODUCTION Irregular work schedules often results in a disruption of the normal circadian rhythm that can causes sleepiness when wakefulness is required and insomnia during the main sleep episode. METHOD Two physicians using the Sleep-EVAL system interviewed 817 staff members of a psychiatric hospital. The interviews were done during the working hours. In addition to a series of questions t...

In today's competitive market, quality has an important role in manufacturing system. The manufacturers attempt to maintain their production system in a proper condition to produce high quality products. One of the key factors to achieve this goal is maintenance policy. Most studies on maintenance focused on machines and less attention has been paid to human resources as the most important fact...

The present experiments examined the effect of work requirements in combination with reinforcement schedule on the choice behavior of adults with mental retardation and preschool children. The work requirements of age-appropriate tasks (i.e., sorting silverware, jumping hurdles, tossing beanbags) were manipulated. Participants were presented with their choice of two response options for each tr...

Various MAC protocols with different objectives were proposed for wireless sensor networks. MAC protocols employ identical schedules for both unicast and broadcast packet transmissions, and modify their “unicast schedule” to work with broadcast packets. Unlike other wireless networks, it is generally hard to charge/replace the exhausted battery, which gives way to the primary objective of maxim...

in today's competitive market, quality has an important role in manufacturing system. the manufacturers attempt to maintain their production system in a proper condition to produce high quality products. one of the key factors to achieve this goal is maintenance policy. most studies on maintenance focused on machines and less attention has been paid to human resources as the most important...

T he Schedule H is the Internal Revenue Service (IRS) form used to report Social Security and Medicare taxes on wages of $1,400 or more paid to household employees. The IRS defines a household employee as someone whose work details are controlled by the employer. A Schedule H is not required to be filed when household work is performed by an agency employee or by a self-employed individual. In ...