Middleware architectures for the smart grid: A survey on the state-of-the-art, taxonomy and main open issues

The integration of small-scale renewable energy sources in the smart grid depends on several challenges that must be overcome. One of them is the presence of devices with very different characteristics present in the grid or how they can interact among them in terms of interoperability and data sharing. While this issue is usually solved by implementing a middleware layer among the available pieces of equipment in order to hide any hardware heterogeneity and offer the application layer a collection of homogenous resources to access lower levels, the variety and differences among them make the definition of what is needed in each particular case challenging. This paper offers a description of the most prominent middleware architectures for the smart grid and assesses the functionalities they have, considering the performance and features expected from them in the context of this application domain

Area Littlewood-Paley functions associated with Hermite and Laguerre operators

In this paper we study Lp-boundedness properties for area Littlewood-Paley functions associated with heat semigroups for Hermite and Laguerre operator

Controlled localization of interacting bosons in a disordered optical lattice

We show that tunneling and localization properties of interacting ultracold atoms in an optical lattice can be controlled by adiabatically turning on a fast oscillatory force even in the presence of disorder. Our calculations are based on the exact solution of the time-dependent Schroedinger equation, using the Floquet formalism. Implications of our findings for larger systems and the possibility of controlling the phase diagram of disordered-interacting bosonic systems are discussed.Comment: 7 pages 7 fig

The moderating role of gender on entrepreneurial intentions: a TPB perspective

Purpose: To disentangle the ways in which social norms shape entrepreneurial intentions of university students and to analyse the moderating effect of gender that may arise. Design/methodology/approach: We have used the entrepreneurial intention model based on Theory of Planned Behaviour (TPB) literature and moderated by students’ gender affecting this intention. We tested some hypotheses using data from undergraduate business students in Spain and their entrepreneurial intentions. Findings: Our results suggest that perceived behavioural control and attitudes affect the entrepreneurial intentions of university students towards entrepreneurship while subjective norms do not. Furthermore, our findings reveal that the moderating effect of gender has a positive influence for women in the relationship between those subjective norms and the perceived behavioural control. However, as to some research done so far, the moderating role of gender does not seem to have a particular effect on predicting entrepreneurial intentions when moderating TPB dimensions. Practical implications: Given the socio-economic benefits attributed to entrepreneurship, the results allow the design of more effective education initiatives and policies. Originality/value: This research provides support for the application of the TPB, allowing for a better understanding of gender differences in entrepreneurial intentions

Maxillofacial reconstruction in a pediatric patient with Osteosarcoma

Osteosarcoma is a bone tumor that consists of malignant cells that produce immature bone. Is a bone tumor that develops during periods of rapid growth in adolescents and young adults. It is the most common type of bone cancer in children and adolescents. The diagnosis and treatment of patients with osteosarcoma requires a multidisciplinary team approach. Resection of maxillary tumours remains a surgical challenge due to the possible aesthetic and functional secuelae. We present herein the case of a 15 year-old female with an osteoblastic osteosarcoma of the left maxilla. It was treated with eight cycles of neoadjuvant chemotherapy, followed by a total left maxillectomy. Resection was performed through a modified Ferguson-Weber approach, using a titanium mesh to reconstruct the orbital base and the maxillary process. A palatal obturator was placed at the same time. The use of a three-dimensional model by stereolithography is extremely helpful in planning and performing the maxillectomy, as well as the facial reconstructio

Parâmetros de degradabilidade potencial da matéria seca, da proteína bruta e da fibra em detergente neutro das silagens de seis genótipos de sorgo (Sorghum bicolor (L.) Moench), com e sem tanino no grão, avaliadas pela técnica in situ.

Para testar o efeito da presenca de tanino no grao sobre os parametros de degradabilidade potencial da materia seca, da proteina bruta e da fibra em detergentes neutro de seis genotipos de sorgo para silagem, foi conduzido um experimento utilizando a tecnica da degradabilidade in situ. Quatro novilhos canulados no rumen, alimentados individualmente e duas vezes ao dia ad libitum com feno de Tifton 85, foram utilizados para a incubacao de silagens de sorgo no estadio de grao leitoso. pertencentes a seis genotipos: BR 303, BR 304, BR 601 e AG 2006 (sem tanino no grao); BR 700 e BR 701 (com tanino). Foram incubadas 5 g de amostra nos tempos de incubacao: 6, 12, 24, 48, 72 e 96 horas. O tempo zero (t0) foi utilizado para calculo da fracao soluvel. a presenca do tanino reduziu a extensao de degradacao da materia seca e da proteina bruta nas silagens de sorgo BR 700 e BR 701. A digestibilidade potencial destes nutrientes foi influenciada pelo tanino. Nao foi observada efeito depressivo do tanino sobre as taxas de degradacao para nenhum nutriente, em nenhuma silagem testada. A degradabilidade potencial da fibra em detergente neutro foi reduzida pela presença de tanino