Evaluating Ontology Matching Systems on Large, Multilingual and Real-world Test Cases

In the field of ontology matching, the most systematic evaluation of matching systems is established by the Ontology Alignment Evaluation Initiative (OAEI), which is an annual campaign for evaluating ontology matching systems organized by different groups of researchers. In this paper, we report on the results of an intermediary OAEI campaign called OAEI 2011.5. The evaluations of this campaign are divided in five tracks. Three of these tracks are new or have been improved compared to previous OAEI campaigns. Overall, we evaluated 18 matching systems. We discuss lessons learned, in terms of scalability, multilingual issues and the ability do deal with real world cases from different domains

Transport properties and point contact spectra of Ni_xNb_{1-x} metallic glasses

Bulk resistivity and point contact spectra of Ni_xNb_{1-x} metallic glasses have been investigated as functions of temperature (0.3-300K) and magnetic field (0-12T). Metallic glasses in this family undergo a superconducting phase transition determined by the Nb concentration. When superconductivity was suppressed by a strong magnetic field, both the bulk sample R(T) and the point contact differential resistance curves of Ni_xNb_{1-x} showed logarithmic behavior at low energies, which is explained by a strong electron - "two level system" coupling. We studied the temperature, magnetic field and contact resistance dependence of Ni_{44}Nb_{56} point-contact spectra in the superconducting state and found telegraph-like fluctuations superimposed on superconducting characteristics. These R(V) characteristics are extremely sensitive detectors for slow relaxing "two level system" motion.Comment: 4 pages, 5 figure

Studies on the maize cold tolerance tests in the Martonvásár phytotron

The climatic conditions in Hungary and in the countries to which seed is exported makes the study of maize cold tolerance and constant improvements in the cold tolerance of Martonvásár hybrids especially important. An improvement in the early spring cold tolerance of maize would allow it to be grown in more northern areas with a cooler climate, while on traditional maize-growing areas the profitability of maize production could be improved by earlier sowing, leading to a reduction in transportation and drying costs and in diseases caused by Fusarium sp. The recognition of this fact led Martonvásár researchers to start investigating this subject nearly four decades ago. The phytotron has proved an excellent tool for studying and improving the cold tolerance of maize. The review will give a brief summary of the results achieved in the field of maize cold tolerance in the Martonvásár institute in recent decades

Characterisation of Segregation by Dynamic Neutron Radiography

Dynamic neutron radiography is an advanced non-destructive technique to visualise and analyse different types of segregation phenomena in technically important objects. Here we describe applications on calorimetric devices studied during operation. Segregation behaviour in the water separator and formation of clogging in the tube system of absorption-type refrigerator is studied. Separation of lubrication oil on the surface of the cooling agent in the evaporator puffer of compression-type cooling units, and inhomogeneous distribution of the working fluid in thermostats is discussed

Uranium surroundings in borosilicate glass from neutron and x-ray diffraction and RMC modelling

Neutron and high-energy x-ray diffraction measurements have been performed on multi-component $55SiO_{2}\centerdot 10B_{2}O_{3}\centerdot 25Na_{2}O\centerdot 5BaOcenterdotZrO_2$ borosilicate host glass loaded with 30 wt% UO$_3$. Both the traditional Fourier transformation technique and the reverse Monte Carlo simulation of the experimental data have been applied to get structural information. It was established that the basic network structure consists of tetrahedral SiO$_4$ units and of mixed tetrahedral BO$_4$ and trigonal BO$_3$ units, similar to the corresponding host glass. Slight changes have been observed in the oxygen surroundings of the Na and Zr modifier cations; both the Na–O and Zr–O distances decrease and a more compact short-range structure has been obtained compared to the host glass. For the U–O correlations two distinct peaks were resolved at 1.84 and 2.24 Å, and for higher distances intermediate-range correlations were observed. Significant correlations have been revealed between U and the network former Si and B atoms. Uranium ions take part in the network forming, which may be the reason for the observed good glassy stability and hydrolytic properties

Small-angle neutron scattering study of amorphous isotopic Ni-Nb system

Inhomogeneities in amorphous Ni-Nb samples prepared from various Ni-isotopes are investigated for two compositions, Ni-44 at% and Ni-62 at% by small-angle neutron scattering (SANS) in the scattering vector range from 0.007 to 0.45 Å-1. A strong increase in the structure factors is observed below 0.04 Å-1 whereas above 0.06 Å-1 they smoothly become constant. In order to clarify the origin of SANS the total structure factors are separated into the Bhatia-Thornton partial structure functions. It is shown that, the inhomogeneities are both topological and chemical in character. A characteristic correlation length of about 180 Å is obtained

LOCAL ORDER IN Fe-B METALLIC GLASSES STUDIED BY HIGH-RESOLUTION NEUTRON DIFFRACTION

Le facteur de structure du système amorphe Fe-B, avec une concentration en bore allant de 14 à 25%, a été obtenu par diffraction des neutrons d'une source pulsée. Le domaine de vecteurs de diffusion exploré va jusqu'à 230 nm-1 ce qui permet d'atteindre une très bonne résolution. On en a déduit les distances entre proches voisins Fe-B et Fe-Fe, ainsi que la largeur de distribution de ces distances et les nombres de coordination. Les résultats sont interprétés sur la base d'un modèle de quasicristal.The structure factor of amorphous Fe-B system for 14-25 at% boron was measured by pulsed neutron diffraction up to 230 nm-1 resulting in high resolution in the distribution function. The first neighbour Fe-B and Fe-Fe distances, the width of their distributions and the coordination numbers are derived. The results are interpreted by quasi-crystalline model calculations