On a Java based implementation of ontology evolution processes based on Natural Language Processing

An architecture was described Burzagli et al. (2010) that can serve as a basis for the design of a Collective Knowledge Management System. The system can be used to exploit the strengths of collective intelligence and merge the gap that exists among two expressions of web intelligence, i.e., the Semantic Web and Web 2.0. In the architecture, a key component is represented by the Ontology Evolution Manager, made up with an Annotation Engine and a Feed Adapter, which is able to interpret textual contributions that represent human intelligence (such as posts on social networking tools), using automatic learning techniques, and to insert knowledge contained therein in a structure described by an ontology. This opens up interesting scenarios for the collective knowledge management system, which could be used to provide up to date information that describes a given domain of interest, to automatically augment it, thus coping with information evolution and to make information available for browsing and searching by an ontology driven engine. This report describes a Java based implementation of the Ontology Evolution Manager within the above outlined architecture

The g − 2 experiment

This paper briefly describes the main features of the muon g − 2 experiment E989 at Fermilab. The experiment aims to measure the muon anomaly with a 140 ppb accuracy, improving by a factor 4 last measurement done at BNL (E821), and potentially revealing new physics beyond the Standard Model

Photoionization spectroscopy of excited states of cold cesium dimers

Photoionization spectroscopy of cold cesium dimers obtained by photoassociation of cold atoms in a magneto-optical trap is reported here. In particular, we report on the observation and on the spectroscopic analysis of all the excited states that have actually been used for efficient detection of cold molecules stabilized in the triplet a^3Sigma_u^+ ground state. They are: the (1)^3Sigma_g^+ state connected to the 6s+6p asymptote, the (2)^3Sigma_g^+ and (2)^3Pi_g states connected to the 6s+5d asymptote and finally the (3)^3Sigma_g^+ state connected to the 6s + 7s asymptote. The detection through these states spans a wide range of laser energies, from 8000 to 16500 cm-1, obtained with different laser dyes and techniques. Information on the initial distribution of cold molecules among the different vibrational levels of the a^3Sigma_u^+ ground state is also provided. This spectroscopic knowledge is important when conceiving schemes for quantum manipulation, population transfer and optical detection of cold cesium molecules.Comment: 24 pages, 11 figures. Note: tables are available separately. Accepted in Molecular Physic

Intelligence on the Web and e-Inclusion

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Oral Contraceptives after Myomectomy: A Short Term Trial

Following myomectomy the rate of fertility is restored and pregnancy may be attempted with a good outcome. In the present study a 3 month treatment with OCs in a group of women after a myomectomy was evaluated. The drug compliance and side effects, the benefits of OC in order to reduce symptoms, to increase post-surgical hemoglobin levels and to avoid an early pregnancy after myomectomy were analyzed. A group of women (n = 55) each with myoma ≥5 cm was recruited: they presented menorrhagia, pelvic pain, dyspareunia and dysmenorrhae. After laparotomic myomectomy the women were divided into 3 groups. Group 1: women (n = 16) treated with pill A (15 mcg of ethynilestradiol + 60 mcg of gestodene); group 2: women (n = 23) treated with pill B (20 mcg of ethynilestradiol + 100 mcg of levonorgestrel); group 3: women (n = 16) treated with a placebo (oral calcium). After three months from myomectomy and treatment patients in each group reported a reduced menorrhagia, dismenorrhea and pelvic pain. Serum haemoglobin levels increased in all women (P < .05). No pregnancy occurred in any group and the compliance was good. A post surgery treatment by using oral contraceptives guarentees pregnancy prevention, associated with reduction of pain, and improvement of haematologic conditions

A blue repulsive potential for dysprosium Bose-Einstein condensates

Short-wavelength repulsive potentials for quantum gases allow to realize new systems and to study new phenomena. Here we report the realization of repulsive optical potentials for dysprosium atoms in the blue region of the spectrum, at wavelengths close to 400 nm. We employ a spectrallyfiltered diode laser system to measure both scalar and tensorial components of the polarizability of dysprosium, which we find in good agreement with the theoretical predictions. We demonstrate the implementation of potential strengths appropriate to manipulate Bose-Einstein condensates, with scattering-limited lifetimes exceeding one second. This type of optical potentials opens interesting directions for the study of dipolar superfluids and supersolids.Comment: 7 pages, 8 figure

Photoionization of ultracold and Bose-Einstein condensed Rb atoms

Photoionization of a cold atomic sample offers intriguing possibilities to observe collective effects at extremely low temperatures. Irradiation of a rubidium condensate and of cold rubidium atoms within a magneto-optical trap with laser pulses ionizing through 1-photon and 2-photon absorption processes has been performed. Losses and modifications in the density profile of the remaining trapped cold cloud or the remaining condensate sample have been examined as function of the ionizing laser parameters. Ionization cross-sections were measured for atoms in a MOT, while in magnetic traps losses larger than those expected for ionization process were measured.Comment: 9 pages, 7 figure