This short paper reports work in progress on planning and studying evolution of a product using Trac as an open source bug reporting tool. We have extended Trac to allow collecting data on requirement and defect types, their origin, and their impact on product characteristics. The solution allows integration of all change data in a single tool and study of different aspects of software evolutio...

This paper argues that the way customers use a new technology may differ from what producers intended and thereby influences the evolution of that technology and its industry. Customers may interpret the technology differently or may adapt it to their local conditions and requirements, generating variety in how users actually deploy products. Moreover, as customers use new products, they may le...

The most common implementation platform for multidimensional data warehouses is RDBMSs storing data in relational star and snowflake schemas. DW schemas evolve over time, which may invalidate existing analysis queries used for reporting purposes. However, the evolution properties of star and snowflake schemas have not previously been investigated systematically. This paper systematically invest...

In any manufacturing environment, the fault introduction rate might be considered one of the most meaningful criterion to evaluate the goodness of the development process. In many investigations, the estimates of such a rate are often oversimplified or misunderstood generating unrealistic expectations on the prediction power of regression models with a fault criterion. The computation of fault ...

Evolutionary game theory is a powerful framework for studying evolution in populations of interacting individuals. A common assumption in evolutionary game theory is that interactions are symmetric, which means that the players are distinguished by only their strategies. In nature, however, the microscopic interactions between players are nearly always asymmetric due to environmental effects, d...

This study aims at supplementing the empirical basis of using software evolution evaluation methods in industrial settings. An industrial case study applying Value-Based Decision Model (VDM) for software evolution strategy evaluations is presented. VDM considers the value of a legacy software system and proposes convenient evolution strategies. Use of VDM is characterized, and the case study de...

The two major methods of explaining economic institutions, namely by strategic choices or by (indirect) evolution, are compared for the case of a homogenous quadratic duopoly market. Sellers either can provide incentives for their agents to care for sales (amounts) or evolve as sellers who care for sales in addition to profits. Whereas strategic delegation does not change the market results as ...

This paper quantitatively analyzed the evolution of human–water relationships in the Heihe River basin of northern China over the past 2000 years by reconstructing the catchment water balance by partitioning precipitation into evapotranspiration and runoff. The results provided the basis for investigating the impacts of societies on hydrological systems. Based on transition theory and the rates...

Using general features of recent quantizations of the Hamiltonian constraint in loop quantum gravity and loop quantum cosmology, a dynamical interpretation of the constraint equation as evolution equation is presented. This involves a transformation from the connection to a dreibein representation and the selection of an internal time variable. Due to the discrete nature of geometrical quantiti...