A significant number of information system development (ISD) projects fail to achieve their predefined goals on time and/or within budget. Many organizations recognize that users can engage in projects to minimize the difficulties in effectively controlling the project and maximize the value created; therefore, user co-production is a crucial for organizations to enhance the effectiveness of IS...

Consideration was given to a model of social dynamics controlled by successive collective decisions based on the threshold majority procedures. The current system state is characterized by the vector of participants’ capitals (utilities). At each step, the voters can either retain their status quo or accept the proposal which is a vector of the algebraic increments in the capitals of the partic...

INTRODUCTION: Melanoma comprises 3% of all skin tumors and can produce metastasis with high mortality. OBJECTIVE: To analyze the temporal behavior mortality from melanoma in capitals Northeast Brazil 2001 to 2017. METHODS: We conducted an ecological time series study involving deaths due registered region Crude standardized rates by world Brazilian populations were analyzed. obtained indicators...