Complex structures of splitting type

We study the six-dimensional solvmanifolds that admit complex structures of splitting type classifying the underlying solvable Lie algebras. In particular, many complex structures of this type exist on the Nakamura manifold $X$, and they allow us to construct a countable family of compact complex non-$\partial\overline\partial$ manifolds $X_k$, $k\in\mathbb{Z}$, that admit a small holomorphic deformation $\{(X_{k})_{t}\}_{t\in\Delta_k}$ satisfying the $\partial\overline\partial$-Lemma for any $t\in\Delta_k$ except for the central fibre. Moreover, a study of the existence of special Hermitian metrics is also carried out on six-dimensional solvmanifolds with splitting-type complex structures

The role of networking in the competitiveness profile of Spanish firms

Two main forces coincide nowadays in the characterisation of productive systems. On the one hand, the internationalisation of markets and economic activities has resulted in an increasing competition worldwide and a new and more global division of labour. On the other, the greater complexity of technology makes innovation a key factor in manufacturing firms’ competitiveness. Cooperative network relationships seem to be important in both processes. This paper aims to explore this aspect in the competitiveness behaviour of four Spanish manufacturing industries: food, chemicals, electronics and vehicles. Data has been obtained from a survey conducted specifically for this purpose at the firm level. Findings from the empirical analysis, based on the application of the Polytomus Logit Universal Model (PLUM), confirm the positive effects of the ability to network on company performance, particularly, intra-firm cooperation, cooperation between competitors and user-producer relationships.La internacionalización de mercados, de actividades económicas y la creciente competencia global son algunos de los factores que caracterizan los sistemas productivos actuales. A ello se suma una intensa complejidad tecnológica que afecta tanto a productos como a procesos productivos, concediéndole a la innovación un papel clave en la competitividad de las empresas manufactureras. En ambos procesos, las relaciones de cooperación empresarial se erigen como forma organizativa de creciente importancia. En este documento se explora la relación entre cooperación y comportamiento competitivo en cuatro industrias manufactureras: alimentación, química, electrónica y automóviles. La información estadística se ha obtenido a partir de una encuesta realizada a nivel microeconómico y diseñada específicamente con este fin en España. Los resultados que se derivan del análisis empírico, basados en la aplicación de un modelo Logit Universal (PLUM), confirman los efectos positivos de las relaciones cooperativas en los resultados empresariales, concretamente las relaciones intra-empresa, la cooperación entre competidores y las relaciones usuario-proveedor.Co-operation, Networking, Innovation, Competitiveness.

On Poisson quasi-Nijenhuis Lie algebroids

We propose a definition of Poisson quasi-Nijenhuis Lie algebroids as a natural generalization of Poisson quasi-Nijenhuis manifolds and show that any such Lie algebroid has an associated quasi-Lie bialgebroid. Therefore, also an associated Courant algebroid is obtained. We introduce the notion of a morphism of quasi-Lie bialgebroids and of the induced Courant algebroids morphism and provide some examples of Courant algebroid morphisms. Finally, we use paired operators to deform doubles of Lie and quasi-Lie bialgebroids and find an application to generalized complex geometry.Comment: 12 page

Pain, anxiety and patient satisfaction in office hysteroscopy, is there a link? Are patient satisfaction questionnaires reliable?

Background: Office hysteroscopy is becoming increasingly popular leading to examinations and operations without anesthesia.  Anxiety is always present before an aversive medical intervention and may play a role in pain perception. The objectives of the study were to determine if pain perception is linked to anxiety and how well patient satisfaction questionnaires correlate with pain.Methods: Prospective observational study enrolled one hundred and four women. One hundred cases were included and analyzed. Patients scheduled for office hysteroscopy, who accepted to participate and were able to answer questionnaires.Results: A ten centimeter visual analogue scale was used for pain evaluation and the State anxiety-trait inventory for adults questionnaires for anxiety assessment. Three other satisfaction questionnaires, each consisting of three answers, were also administered and investigated. Analysis was performed using SPSS 22.0 IBM for windows software tools.Conclusions: Correlation between anxiety and pain reporting showed no influence with anxiety trait (p value = 0.4170) and a mild correlation with anxiety state (p value = 0.146). Classification of pain into “no pain”, “mild pain”, “moderate pain” and “severe pain”, should be revised in office hysteroscopy: for visual analogue scale, scores of 2.5 to 3 cm correspond to the lower boundary of moderate pain and scores above limit 6.5 cm should define pain as severe. Satisfaction questionnaires significantly correlated to discomfort (p value <0.001) and may be a practical option to assess tolerance of medical procedures with excellent sensibility and specificity

Moving rom Histopathology to Molecular Tools in the Diagnosis of Molluscs Diseases of Concern under EU Legislation

10 páginas, 2 tablas.-- This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these termsOne of the main factors limiting molluscs production is the presence of pathogens and diseases. Disease agent transfer via transfers of live molluscs has been a major cause of disease outbreaks and epizootics. Because of that, the European Union has adopted several decisions and directives, the last in 2006 (2006/88/EC) to control movements of marine organisms over the European countries. Once the disease is established in a determined area its eradication is a complicated task because life cycle of pathogens are not completely known and only a good and early diagnosis of the disease could be the most appropriate way to deal with it. Besides, molluscs do not have an adaptive immune response and vaccination strategies are not possible. Molluscs listed diseases under EU legislation are mainly protozoan parasites, that's why histological techniques are recognized for their diagnosis. However, molecular techniques are being increasingly used primarily as confirmatory techniques of the presence of the pathogens but also in disease monitoring programs. Research perspectives are mainly focussed in the optimization, of the already described techniques to gain in sensitivity and sensibility and in the development of new molecular biology techniques (quantitative real time PCRs), that are faster and easier to apply and that allow a positive diagnosis even in early stages of infection. However, molecular tools detect DNA sequences of the pathogen which does not imply that pathogen is viable in the cell host and the infection is established. Consequently, it needs to be validated against other techniques, such as histology or in situ hybridization, so that its reliability can be determinedAuthors want to thanks the Ministerio de Agricultura, Alimentacion y Medio Ambiente, to CSIC (project 201640E024) and to Ministerio de Economía y competitividad (project AGL2015-65705-R) for their financial supportPeer reviewe