1,721,015 research outputs found
An Insurance Investment Portfolio in high volatility environment. Stress testing under Black-Litterman framework
No full textA risk-based model for the Solvency Capital Requirement assessment for Life and Market risk.
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EVALUATING THE SOLVENCY CAPITAL REQUIREMENT FOR MARKET RISK IN SOLVENCY II VIA REPLICATING PORTFOLIO APPROACH
No full textUse of scanning ion conductance microscopy to guide and redirect neuronal growth cones
No full textScanning ion conductance microscopy has been applied to neuronal growth cones of the leech either to
image or to stimulate them. Growth cone advance was recorded in non-contact mode using a 2% ion
current decrease criterion for pipette-membrane distance control.
We demonstrate effective growth cone remodelling using a 5% criterion (near-scanning).
Recurrent line near-scanning aligned growth cone processes along the scan line.
The new membrane protrusions, marked by DiI, started a few minutes after scanning onset and
progressively grew in thickness.
Using scanning patterns suitable for connecting distinct growth cones, new links were consistently
developed.
Although the underlying mechanism is still a matter for investigation, a mechanical perturbation
produced by the moving probe appeared to induce the process formation. Thanks to its deterministic and
interactive features, this novel approach to guiding growth cones is a promising way to develop
networks of identified neurons as well as link them with artificial structures
Commentary on "clinical characteristics and adequate treatment of familial adenomatous polyposis combined with desmoid tumors"
No full textDespite being extremely rare in the general population, intra-abdominal DTs (also known as mesenteric fibromatosis) represent the most frequent cause of death in patients affected with FAP having undergone total proctocolectomy
The first-time phenomenon: successful students' mathematical crisis in secondary-tertiary transition
Full text linkThe huge difficulties related to the transition from secondary to tertiary mathematics are documented by several official data. The analysis of these difficulties is a main issue in educational research at undergraduate level. It is of particular interest the case of the students who choose mathematics as a major. In fact, for the most part, they are students considered excellent in mathematics during secondary school, they seem to have the cognitive resources to succeed, but, in many cases, they encounter several difficulties during their university experience. Therefore, it appears particularly interesting to study also the affective sources and consequences of these difficulties. With this aim, we developed a qualitative and narrative study focused on students’ reflec- tions about their mathematical difficulties in the university experience
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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