BIM is causing a major paradigm shift in the AEC industry. Paper focuses on ten key big-picture questions related to BIM. Studies BIM present & future through the structure, function, behavior framework. Suggests the concept called BIMS - building information management system. Key advantage of BIMS is not support of integration but of specialization.
COBISS.SI-ID: 7627617
An economic-design optimization of cross-laminated timber (CLT) plate with stiffening ribs is presented. For the structural analysis, an enhanced assumed strain (EAS) solid finite element is used. It behaves well for thin plates (with no shear locking) and delivers reasonable approximations for the transverse shear stresses in layered composites. Eurocodes 5 (EC5) are followed in defining the optimization constraints, which include deflections, stresses and fundamental eigenfrequency. The gradient optimization is performed. Analytical expressions for sensitivities are obtained by an automatic differentiation tool. The result is an economic timber plate configuration that complies with the EC5 requirements. Numerical examples are presented in order to illustrate the approach.
COBISS.SI-ID: 7565665
A significant criticism made of preservice teacher education is that it fails to prepare teachers in such a way that they would feel confident in the use of information and communication technology (ICT) in teaching, despite the assumed digital literacy of student-teachers and the children they will eventually teach. New technologies have enabled multimodal design and digital storytelling in meaning-making and communication and are now often instrumental and influential in shaping students' social practices and identities. The purpose of this study was to explore an integrative approach in applying ICT in learning with specific reference to the formation of mathematics teaching capability in preservice teachers. It takes into consideration student-teachers' lived experiences when introducing ICT supported learning into their classrooms as well as their exposure to related university courses such as educational technology, special didactics of mathematics and mathematics. This paper describes the instructional design framework and assessment criteria for mathematical problem solving and digital storytelling introduced to an ICT course for student-teachers. Based on the analysis of pre- and posttesting of the subjects' capabilities and reports of their perceptions, it is suggested that preservice teachers can efficiently develop their content knowledge in mathematics problem solving and that an integrative approach such as that described here may facilitate both mathematical problem-solving competences and pedagogical competences for applying digital storytelling in solving mathematical problems. The cohort of preservice teachers had no prior experiences of digital storytelling or multimodal design and perceived them as new practices. Their conceptions changed during the course from the passive recipients to active producers of media content. They demonstrated reflection relative to learning-by-design and representation modelling. They perceived digital storytelling as a strategy and means for empowering the "student-voice" and the active construction of knowledge. The findings of the study contribute to preservice teacher education indicating that an integrated approach of instruction that deploys digital storytelling and multimodal design can help facilitate preservice teachers' pedagogical competencies and mathematical content knowledge.
COBISS.SI-ID: 6979425
We revisit the consistently linearized pathfollowing method that can be applied in the nonlinear finite element analysis of solids and structures in order to compute a solution path. Within this framework, two constraint equations are considered: a quadratic one (that includes as special cases popular spherical and cylindrical forms of constraint equation), and another one that constrains only one degree-of-freedom (DOF), the critical DOF. In both cases, the constrained DOFs may vary from one solution increment to another. The former constraint equation is successful in analysing geometrically nonlinear and/or standard inelastic problemswith snap-throughs, snap-backs and bifurcation points. However, it cannot handle problems with the material softening that are computed e.g. by the embeddeddiscontinuity finite elements. This kind of problems can be solved by using the latter constraint equation. The plusses and minuses of the both presented constraint equations are discussed and illustrated on a set of numerical examples. Some of the examples also include direct computation of critical points and branch switching. The direct computation of the critical points is performed in the framework of the pathfollowing method by using yet another constraint function, which is eigenvector-free and suited to detect critical points.
COBISS.SI-ID: 7456097
In collaborative engineering environments communication and information sharing among participants is essential for successful project delivery. Modern information technology is driving the world towards two divergent communication topologies: 1) the industry is driven towards a centralized one around an information model, 2) citizens using information technologies at home are driven towards a meshed one where each can communicate whenever to whoever using communication services like those in social media. This paper presents the analysis, conceptual framework, architecture and prototype of a system that is bringing the latter to the engineering community. The framework consists of two main components: 1) a framework engine providing working environment and support for core services such as locale storage and module integration, and 2) external modules, extending core capabilities of the framework. For the purpose of this research work the SWOT analysis has been carried out revealing main characteristics of the proposed approach.
COBISS.SI-ID: 7835745