28 research outputs found

### Solving Irregular Strip Packing Problems With Free Rotations Using Separation Lines

Solving nesting problems or irregular strip packing problems is to position polygons in a fixed width and unlimited length strip, obeying polygon integrity containment constraints and non-overlapping constraints, in order to minimize the used length of the strip. To ensure non-overlapping, we used separation lines. A straight line is a separation line if given two polygons, all vertices of one of the polygons are on one side of the line or on the line, and all vertices of the other polygon are on the other side of the line or on the line. Since we are considering free rotations of the polygons and separation lines, the mathematical model of the studied problem is nonlinear. Therefore, we use the nonlinear programming solver IPOPT (an algorithm of interior points type), which is part of COIN-OR. Computational tests were run using established benchmark instances and the results were compared with the ones obtained with other methodologies in the literature that use free rotation

### Relationship between internet addiction and feelings of loneliness in university students from a private institution southern Brazil

The internet is part of everyday life, used primarily for communication and social interaction. It can also be used to fulfill emotional needs (e.g., loneliness, depression, etc.) and, through abusive use, might assist in developing a dependency on social networks. This study is part of a larger research conducted with college students at a private university in southern Brazil. This is a quantitative, correlational, cross-sectional study. It included 124 college students that had a mean age of 23.7 years (SD = 8.1; Min 18; Max 58), and of which 91 (73.4%) were female. The participants were students of six schools of knowledge from the university. As an inclusion criterion, it was considered only users of social media; it was evidenced, however, that 100% of the participants used WhatsApp. The study aimed to analyze possible associations between internet addiction and feelings of loneliness, through the instruments SociodemographicQuestionnaire, Internet Addiction Test (IAT) and Brazilian Loneliness Scale (UCLA-BR). The results found a significant positive association between Internet addiction and feelings of loneliness (r s = .425; p < .01), concluding that problematic Internet use among college students may be a risk factor for developing or enhancing feelings of loneliness and vice versa. Thus, future research and intervention development should pay attention to the effects of Internet addiction on this aspect of mental healt

### INTEGRAÇÃO DE AMBIENTES: PROPOSTA ARQUITETÔNICA PARA EDIFICAÇÃO INTELIGENTE

Grande parte das edificações residenciais são construídas com poucas possibilidades de modificações para suprir as necessidades futuras dos moradores. Assim, como tema de pesquisa optou-se por estudar sobre materiais de vedação e técnicas construtivas que proporcionem a integração de ambientes, por meio da modificação de cenários, objetivando a elaboração do projeto arquitetônico de um edifício residencial alto padrão, no município de Xanxerê, Santa Catarina. Os materiais de vedação e técnicas construtivas para compor o projeto arquitetônico do edifício residencial, são o drywall, painéis de madeira mecanizados, painéis criativos para delimitação de ambientes, uso do vidro e procedimentos construtivos como o projeto de interiores com conceito de integração de ambientes o qual potencializa o objetivo da integração nos apartamentos. Para elaboração deste trabalho adota-se a análise documental de síntese metodológica, análise da área e inserção urbana, relação do projeto de arquitetura e considerações finais. Após o estudo sobre o conceito de integração de ambientes e a elaboração de um projeto arquitetônico com a aplicação dos objetivos determinados no estudo da integração, observa-se que o apartamento tornou-se um lar, com a ampliação dos cômodos, aumento da área de circulação, ambientes mais arejados, funcionais, confortáveis e otimizados