New forms of collaboration between organizations based on open source principles are rapidly emerging. The collaboration is typically done in a spirit of co-opetition whereby companies, often SMEs, share cost and risk by developing software jointly and openly. The paper elaborates how this emerging phenomenon of open source ecosystems can be understood from the perspective of actability and the...

Quality of modeling for information systems analysis and design is an important field of research in which, however, a comprehensive and generally acknowledged understanding is still outstanding. Notions of “model” and “quality” often remain vague and focus on particular aspects such as “syntax” or “semantics” rather than a comprehensive perspective on model quality. In this paper we argue that...

Quality of modeling for information systems analysis and design is an important field of research in which, however, a comprehensive and generally acknowledged understanding is still outstanding. Notions of “model” and “quality” often remain vague and focus on particular aspects such as “syntax” or “semantics” rather than a comprehensive perspective on model quality. In this paper we argue that...

In this paper, a new interval-valued fuzzy multi-criteria group decision-making model is proposed to evaluate each of the energy plans with sustainable development criteria for proper energy plan selection. The purpose of this study is divided into two parts: first, it is aimed at determining the weights of evaluation criteria for sustainable energy planning and second at rating sustainable ene...

OBJECTIVE The objective of this study was to test the validity of the pragmatic criteria of the definitions of neonatal near miss, extending them throughout the infant period, and to estimate the indicators of perinatal care in public maternity hospitals. METHODS A cohort of live births from six maternity hospitals in the municipalities of São Paulo, Niterói, and Rio de Janeiro, Brazil, was c...

Method: Cognitive functions were examined in 30 patients with bipolar disorder aged 18–68 who fulfilled DSMIV criteria for a depressive episode (Hamilton Depression Rating Scale score ≥11) and 30 patients aged 23– 68 who fulfilled DSM-IV criteria for a manic or hypomanic episode (Young Mania Rating Scale ≥11). The comparison group consisted of 30 healthy individuals aged 23–71 with no history o...

We introduce a new method for modeling rating (utility) functions which employs techniques from fuzzy set theory. The main idea is to build a hierarchical model, called a fuzzy operator tree (FOT), by recursively decomposing a rating criterion into sub-criteria, and to combine the evaluations of these sub-criteria by means of suitable aggregation operators. Apart from the model conception itsel...

Based on historical user information, collaborative filters predict for a given user the classification of unknown items, typically using a single criterion. However, a crowd typically rates tourism resources using multi-criteria, i.e., each user provides multiple ratings per item. In order to apply standard collaborative filtering, it is necessary to have a unique classification per user and i...