We study dynamic trial-offer markets, in which participants first try a product and later decide whether to purchase it or not. In these markets, social influence and position biases have a greater effect on the decisions taken in the sampling stage than those in the buying stage. We consider a myopic policy that maximizes the market efficiency for each incoming participant, taking into account...

This study explores the precursors of employees' safety behaviors based on a dual-process model, which suggests that human behaviors are determined by both controlled and automatic cognitive processes. Employees' responses to a self-reported survey on safety attitudes capture their controlled cognitive process, while the automatic association concerning safety measured by an Implicit Associatio...

Introduction An article in the December 2002 issue of Safety & Health, asserted that behavior-based safety has run its course and is in decline. A construction worker and trades unionist for many years, I witnessed too many accidents resulting from unsafe behavior. Since then I have spent many years researching and implementing behavioral safety in 12 industries on four continents. I was a Prof...

The delivery of sophisticated control algorithms or system features via software is the driving force behind its increased use in safety-critical applications. The existence of software faults in these systems is not tolerable and a high degree of confidence that safety-critical systems meet their reliability requirements must be gained prior to their deployment. The transformational approach t...

olive oil is one of the foods that are preferred by consumers seeking healthy nutrition. healthy, safety and high quality olive oil production can only be achieved in olive oil enterprises that follow these criteria. therefore, food safety and quality management systems should be placed in these olive oil enterprises. the aim of this study was to determine behaviors and attitudes of firm owners...

Occupational, safety and health administration is a major important function in human resource management. Malaysia encounters serious problems regarding the safety and health of workers arising from negligence in the workplace, which at times results in accidents and death. Latest statistics from PERKESO shows that more than 1526 cases have been reported across the country from January 2014 – ...

Consider the problem of sampling sequentially from a finite number of N > 2 populations, specified by random variables X i k, i = 1, . . . ,N, and k = 1,2, . . .; where X i k denotes the outcome from population i the k th time it is sampled. It is assumed that for each fixed i, {X i k}k>1 is a sequence of i.i.d. normal random variables, with unknown mean μi and unknown variance σ2 i . The objec...

The problem of comparing several alternate sampling devices to the Occupational Safety and Health Administration (OSHA) standard, or the comparison of several sampling devices among themselves, is considered. A test based on the OSHA criterion that states that "90% of the readings of the sampling device should be within +/- 25% of the readings obtained by the standard" is developed. Type I erro...

Cardinality estimation algorithms receive a stream of elements whose order might be arbitrary, with possible repetitions, and return the number of distinct elements. Such algorithms usually seek to minimize the required storage and processing at the price of inaccuracy in their output. Real-world applications of these algorithms are required to process large volumes of monitored data, making it...