Locally quasi-nilpotent elementary operators

Let $A$ be a unital dense algebra of linear mappings on a complex vector space $X$. Let $\phi=\sum_{i=1}^n M_{a_i,b_i}$ be a locally quasi-nilpotent elementary operator of length $n$ on $A$. We show that, if $\{a_1,\ldots,a_n\}$ is locally linearly independent, then the local dimension of V(\phi)=\spa\{b_ia_j: 1 \leq i,j \leq n\} is at most $\frac{n(n-1)}{2}$. If \lDim V(\phi)=\frac{n(n-1)}{2} , then there exists a representation of $\phi$ as $\phi=\sum_{i=1}^n M_{u_i,v_i}$ with $v_iu_j=0$ for $i\geq j$. Moreover, we give a complete characterization of locally quasi-nilpotent elementary operators of length 3.Comment: 15

Evidencia científica sobre las intervenciones enfermeras en la pérdida perinatal

Treballs Finals de Grau d'Infermeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Curs: 2016-2017, Tutor: Carme López MatheuIntroducción: El embarazo, en general, es un momento de felicidad. Pero en algunas ocasiones el personal sanitario se encuentra una situación poco habitual, un fallecimiento perinatal. Los enfermeros debemos de estar preparados para atender a estos padres intentando que la situación sea lo menos traumática posible, saber prepararlos, aliviar el sufrimiento y evitar que la situación derive en futuras patologías. Para ello debemos de tener herramientas y protocolos que nos sirvan de guía y nos orienten como profesionales. Objetivo principal: Identificar que evidencia existe en relación a las intervenciones enfermeras en la pérdida perinatal. Metodología: Revisión bibliográfica. Se realizó una búsqueda en las bases PubMed, Cochrane, Cuidatge, SinceDirect, Cuiden, y Proquest. Resultados: Fueron seleccionados y analizados 12 artículos. Discusión: Necesidades de la mujer: Es un ser biopsicosocial, por lo que no podemos dejar de lado la familia, que también sufre la pérdida. Sentimiento de maternidad perdida, puerperio sin bebé y de incredulidad. Intervención equipo/enfermero: Guiar y acompañar durante el proceso, seguimiento y grupos de apoyo. Creación de momentos: La toma de contacto con el bebé, sostenerlo en brazos, hacerle fotos, tomar una huella o guardar un mechón dieron resultados muy beneficiosos para los padres. Conclusiones: La enfermera es muy importante en el proceso de pérdida fetal. Las necesidades de la mujer y su familia vienen determinadas por las complicaciones a nivel físico pero también a nivel psicológico, espiritual, social... Una buena actuación del personal sanitario es vital para el proceso de duelo. Escucha activa y orientación son básicos para un buen manejo. La creación de momentos, el poder ver y sostener al bebé en brazos inicia un camino hacia la aceptación

Initial Effects of Differently Treated Biogas Residues from Municipal and Industrial Wastes on Spring Barley Yield Formation

Soil application of biogas residues (BGRs) is important for closing nutrient cycles. This study examined the efficiency and impact on yields and yield formation of solid-liquid separated residues from biodegradable municipal and industrial wastes (bio-waste) in comparison to complete BGRs, nitrification inhibitor, agricultural BGRs, mineral fertilizer and unfertilized plots as control. The experiment was set up as a randomized block design on silt loam Cambisol. Biogas residues from four biogas plants were evaluated. Plants per m², ears per plant, grains per ear and thousand grain weight (TGW) were measured at harvest. Fertilization with BGRs resulted in similar biomass yields compared with mineral fertilizer. Mineral fertilizer (71 dt/ha) and plots fertilized with liquid fraction (59–62 dt/ha) indicated a trend to higher yields than solid fraction or complete BGR due to its high ammonia content. Liquid fractions and fraction with nitrification inhibitor induced fewer plants per m² than corresponding solid and complete variants due to a potential phytotoxicity of high NH4-N concentration during germination. However, barley on plots fertilized with liquid fraction compensated the disadvantages at the beginning during the vegetation period and induced higher grain yields than solid fraction. This was attributable to a higher number of ears per plant and grains per ear. In conclusion, BGRs from biodegradable municipal and industrial wastes can be used for soil fertilization and replace considerable amounts of mineral fertilizer. Our study showed that direct application of the liquid fraction of BGR is the most suitable strategy to achieve highest grain yields. Nevertheless potential phytotoxicity of the high NH4-N concentration in the liquid fraction should be considered

Gender and sustainability. Raising primary school children’s awareness of gender stereotypes and promoting change in their attitudes.

This paper examines one aspect of the importance of the concept of gender for the promotion of sustainable communities from the perspective of the role of education. It is argued that it is important and possible to deconstruct gender stereotypes already present at an early age in order to build counter stereotypes that will help individuals pursue their own personal pathways without being subjected to prejudice and discrimination. A small-scale research project conducted in a primary school in Italy, using semi-quantitative methods of data collection and analysis, is proposed as an example of how learning activities can create awareness of gender stereotypes and promote changes in attitudes in young children

On Bounded Distance Decoding with Predicate:Breaking the "Lattice Barrier" for the Hidden Number Problem

Lattice-based algorithms in cryptanalysis often search for a target vector satisfying integer linear constraints as a shortest or closest vector in some lattice. In this work, we observe that these formulations may discard non-linear information from the underlying application that can be used to distinguish the target vector even when it is far from being uniquely close or short. We formalize lattice problems augmented with a predicate distinguishing a target vector and give algorithms for solving instances of these problems. We apply our techniques to lattice-based approaches for solving the Hidden Number Problem, a popular technique for recovering secret DSA or ECDSA keys in side-channel attacks, and demonstrate that our algorithms succeed in recovering the signing key for instances that were previously believed to be unsolvable using lattice approaches. We carried out extensive experiments using our estimation and solving framework, which we also make available with this work