VIC4C - Computer Visual Interface Concept for Children : análise e desenvolvimento de um novo conceito de interface gráfica computadores

Tese de mestrado. Tecnologia Multimédia. Faculdade de Engenharia. Universidade do Porto, Faculdade de Letras. Universidade do Porto. 200

Distributed Power Trading System Based on Blockchain Technology

The power trading system has the characteristics of nonlinearity, dynamics, and complexity. Part of the business data in the trading system needs to be exposed to numerous external business systems. The traditional centralized power trading model has some problems, such as low data security and trust crisis of regulators. Blockchain technology provides prominent ideas for solving these problems. Firstly, the improved AdaBoost algorithm is used to predict the supply and demand gap of power trading nodes. Secondly, based on the fact that the information on the blockchain is only open to the power supply side, a two-stage game model of asymmetric information between the power supply side and the power user is constructed to capture the price competition behavior between them in order to find the Nash equilibrium price in two stages. Finally, the US PJM market electricity market data are used to carry out an example analysis to verify the effectiveness of the algorithm and model

Egger’s tests for possible publication bias of OS (A), PFS (B), DMFS (C), LRRFS (D).

<p>Egger’s tests for possible publication bias of OS (A), PFS (B), DMFS (C), LRRFS (D).</p

Grade 3–4 acute adverse events of CCRT versus IMRT alone for stage II nasopharyngeal carcinoma.

<p>Grade 3–4 acute adverse events of CCRT versus IMRT alone for stage II nasopharyngeal carcinoma.</p

Forest plot and meta-analysis of OS (A) and LRRFS (B).

<p>Forest plot and meta-analysis of OS (A) and LRRFS (B).</p

Flow chart showing inclusion and exclusion of trials.

<p>Flow chart showing inclusion and exclusion of trials.</p

Sensitivity analysis for the comparison of CCRT with IMRT alone.

<p>Sensitivity analysis for the comparison of CCRT with IMRT alone.</p

Main characteristics of all the included studies.

<p>Main characteristics of all the included studies.</p

Accessing Chemically Recyclable Polyamides with Tunable Properties via Geminal Dimethyl Substitution

The development of new chemically recyclable polymers could serve as a means of reducing the plastic pollution and alleviating global energy crisis and monomer design strategy has driven the innovation in this field. In this contribution, α-dimethyl substituted caprolactam (α-DMCL) and γ-dimethyl substituted caprolactam (γ-DMCL) were prepared to evaluate the substitution position effect on chemical recyclability and material performance in polycaprolactam (PCL) system. The introduction of geminal dimethyl substitution to ε-caprolactam (CL) at α and γ position endowed the resulting polyamides P(α-DMCL) and P(γ-DMCL) with distinct thermal and mechanical properties. Remarkably, thermal depolymerization of P(γ-DMCL) in presence of potassium caprolactamate (CL-K) could be carried out at 200 °C and converted to γ-DMCL in 91% yield. The recovered γ-DMCL was capable of repolymerization to P(γ-DMCL) without a decrease in reactivity, demonstrating the proof-of-concept recyclability of P(γ-DMCL)