Tallinn University of Technology

About: Tallinn University of Technology is a education organization based out in Tallinn, Estonia. It is known for research contribution in the topics: European union & Computer science. The organization has 3688 authors who have published 10313 publications receiving 145058 citations. The organization is also known as: Tallinn Technical University & Tallinna Tehnikaülikool.

Hygrothermal performance of internally insulated brick wall in cold climate: A case study in a historical school building:

Abstract: Interior thermal insulation is frequently one of the only possible solutions for thermal upgrade of the building envelope where the external appearance cannot be changed. In this study, four insulation materials were used in a case study in a historical school building in in situ test walls. The indoor climate in the test room was controlled to simulate the typical dwelling with high moisture load. The temperatures, relative humidity, and heat flows were monitored over 9 months to analyze the hygrothermal performance of four different insulation materials. The hygrothermal performance of insulation materials during drying and wetting periods are presented. Moisture test reference year was used in working out possible energy-renovation solutions. The results show that timing of the renovation works is a matter of consideration to avoid the hygrothermal risks inside the renovated wall assemblies. The results show that in all the cases, thermal comfort can be improved by increasing the inner surface temperat...

Innovation in the Public Sector: Exploring the Characteristics and Potential of Living Labs and Innovation Labs

Abstract: Living Labs and innovation labs share a lot of common traits and characteristics and are both linked to the public sector, but appear in separated literature streams. Both concepts can be regarded as coping mechanisms to deal with contemporary changes in the innovation landscape and within society as a whole. Both also build further on past initiatives and practices, but both concepts are also struggling to find their own clear identity and raison d’etre. As they are largely practice-driven, the theoretical underpinnings and foundations are mostly established ‘post hoc’, making sense of current practice, rather than carefully researching and planning the further development. Starting from a review of the current issues and challenges with innovation in the public sector, we look for links between both concepts by analyzing the current definitions, the predecessors and the state-of-the-art in terms of empirical research into both concepts. Based on these findings, we summarize a set of similarities and differences between both concepts and propose a model towards more collaboration, mutual exchange and integration of practices between innovation labs, that can be regarded as initiators of innovation, and Living Labs, that can be regarded as executors of innovation. By doing this, this paper adds to the conceptual development of both concepts and proposes a roadmap for the further integration of both theory and practice of Living Labs and innovation labs.

The essence of dataflow programming

Abstract: We propose a novel, comonadic approach to dataflow (stream-based) computation. This is based on the observation that both general and causal stream functions can be characterized as coKleisli arrows of comonads and on the intuition that comonads in general must be a good means to structure context-dependent computation. In particular, we develop a generic comonadic interpreter of languages for context-dependent computation and instantiate it for stream-based computation. We also discuss distributive laws of a comonad over a monad as a means to structure combinations of effectful and context-dependent computation. We apply the latter to analyse clocked dataflow (partial stream based) computation.