millions of dollars are being spent worldwide on the repair and maintenance of sewer networks and wastewater treatment plants every year. the production and emission of hydrogen sulfide has been identified as a major cause of corrosion and odor problems in sewer networks. prediction of hydrogen sulfide production in the sewer system helps the engineers and manager to obtain a proper strategy fo...

Requirements engineering (RE) is concerned with the elicitation of the objectives to be achieved by the system-to-be, the operationalization of such objectives into specifications of requirements and assumptions, the assignment of responsibilities for those specifications to agents such as humans, devices and software, and the evolution of such requirements over time and across system families....

We understand a service engagement as a form of collaboration arising in a sociotechnical system (STS). Although STSs are fruitfully modeled using normative abstractions such as commitments, a conventional (practical) commitment can capture only part of the story, namely, a debtor’s promise to the creditor to bring about the consequent if the antecedent holds. In contrast, in a dialectical comm...

Many studies on social mobility use operationalizations of positions that do not take occupational upgrading into account. In order to estimate patterns net upgrading, I propose an operationalization involving administrative data measure by applying a percentile approach. Based this measurement calculate absolute and relative intergenerational patterns. Using operationalization, aim answer the ...