Symplectic structures on quadratic Lie algebras

We study quadratic Lie algebras over a field K of null characteristic which admit, at the same time, a symplectic structure. We see that if K is algebraically closed every such Lie algebra may be constructed as the T*-extension of a nilpotent algebra admitting an invertiblederivation and also as the double extension of another quadratic symplectic Lie algebra by the one-dimensional Lie algebra. Finally, we prove that every symplectic quadratic Lie algebra is a special symplectic Manin algebra and we give an inductive classification in terms of symplectic quadratic double extensions

Pseudo-K\"ahler Lie algebras with abelian complex structures

We study Lie algebras endowed with an abelian complex structure which admit a symplectic form compatible with the complex structure. We prove that each of those Lie algebras is completely determined by a pair (U,H) where U is a complex commutative associative algebra and H is a sesquilinear hermitian form on U which verifies certain compatibility conditions with respect to the associative product on U. The Riemannian and Ricci curvatures of the associated pseudo-K\"ahler metric are studied and a characterization of those Lie algebras which are Einstein but not Ricci flat is given. It is seen that all pseudo-K\"ahler Lie algebras can be inductively described by a certain method of double extensions applied to the associated complex asssociative commutative algebras

Instruction to forget leads to emotional devaluation

Objective: The aim of this study was to investigate if the interaction between emotion and memory is bidirectional. Specifically we tested if intentional forgetting of words and faces would lead to their subsequent emotional devaluation. Method: In three experiments we combined an item-method directed forgetting paradigm with an emotional evaluation task. In addition, to test the general response bias hypothesis, we manipulated the forget instruction so that participants would associate a positive encoding affect with this condition. Results: We found that intentionally forgotten words and faces were subsequently emotionally devaluated as compared with the to-be-remembered words and faces. Furthermore, this effect was replicated for words when we associated a positive instruction with the forget condition, which supports that the devaluation was memory specific. Conclusion: These findings suggest that the Distractor Devaluation effect previously reported in the attention field can be generalized to memory. This is one the first studies to show an influence of memory processes, namely forgetting, on emotion

Micro-cooler Enhancements by Barrier Interface Analysis

Peer reviewedPublisher PD

Effects of CVD Growth Parameters on Global and Local Optical Properties of MoS2_2 Monolayers

Semiconducting transition metal dichalcogenides (TMDs) combine strong light-matter interaction with good chemical stability and scalable fabrication techniques, and are thus excellent prospects for optoelectronic, photonic and light-harvesting applications. Controllable fabrication of high-quality TMD monolayers with low defect content is still challenging and hinders their adoption for technological application. The optical properties of chemical vapor deposition (CVD) grown monolayer MoS$_2$ are largely influenced by the stoichiometry during CVD by controlled sulfurization of molybdenum (Mo) precursors. Here, we investigate how the sulfur concentration influences the sample morphology and, both globally and locally, their optical response. We confirm that samples grown under a Mo:S > 1:2 stoichiometric ratio have regular morphology facilitated by a moderate coverage of triangular monocrystals with excellent optical response. Our data-driven approach correlates growth conditions with crystal morphology and its optical response, providing a practical and necessary pathway to address the challenges towards the controlled synthesis of 2D TMDs and their alloys with desired optical and electronic properties

Planar gunn diode characterisation and resonators elements to realise oscillator circuits

The paper describes the planar Gunn diode, which is well suited to providing milli-metric and tera hertz sources using microwave monolithic integrated circuit (MMIC) technologies. Different planar Gunn electrode geometries are described along with DC, RF and thermal characterisation. To realize the planar high frequency sources there is requirement for high frequency planar resonators, the paper will describe both the radial and new diamond shaped geometries

Event versus activity-based cues and motivation in school-related prospective memory tasks

Prospective memory (PM), the ability to remember an intention in the future, is essential to children’s everyday lives. We explored age differences (6- to 7- vs. 10- to 11-year-olds) in PM depending on the nature of the task and the children’s motivation. Children performed event-based PM tasks (in which the cue was presented during the ongoing activity) and activity-based PM tasks (in which the cue consisted of finishing the ongoing activity). Additionally, the children were assigned to either a reward condition or a no-reward condition. The results showed better performance in event than in activity based tasks, with older children outperforming younger children in both. There was a marginal effect of reward for PM accuracy. These patterns suggest that the cue detection process and children’s motivation play a role in PM performance during development.The current research was completed thanks to financial aid provided by a doctoral research grant (FPU13/03768) to ABC and grants from the Ministerio de Economia y Competitividad Fondos Feder to MTB (PSI2015-65502-C2-1-P) and (PCIN-2015-132)