A system and a method for measuring characteristics of a mobile device are provided. For this purpose, a dot pattern is determined on each of predetermined gray scale levels, and, the mask is created by the dot patterns obtained at the step, where the respective dot patterns are determined independently for every gray scale level. The electric field is changed just prior to or during the desorption laser pulse to promote the desorption of charged species and improve the ionization efficiency of desorbed sample species. The economic data may further include an expected inflation rate for the first economy over a time interval. With using this method, overlap points that are phase-equivalent even if a sonar travels at an usual speed are generated, and fluctuations between pings are detected and corrected by an overlap method. Users may then use the workflow management systems and methods to suspend running of the workflow at any modified work step and request consultation, collaboration, andor approval from the other users whose contact information was added to the work step.