1,088 research outputs found
Some Issues on Ontology Integration
The word integration has been used with different
meanings in the ontology field. This article
aims at clarifying the meaning of the word âintegrationâ
and presenting some of the relevant work
done in integration. We identify three meanings of
ontology âintegrationâ: when building a new ontology
reusing (by assembling, extending, specializing
or adapting) other ontologies already available;
when building an ontology by merging several
ontologies into a single one that unifies all of
them; when building an application using one or
more ontologies. We discuss the different meanings
of âintegrationâ, identify the main characteristics
of the three different processes and proposethree words to distinguish among those meanings:integration, merge and use
SAMIR, Samir Khalil (ed.), Actes du Secundum Symposium Syro-Arabicum (Sayyidat al-Bâ r, septembre 1998). Ătudes Arabes ChrĂ©tiennes. 2 vol., en: Parole de lâOrient 27 (2002) & 28 (2003)
Reseña de: Actes du IIum Symposium Syro-Arabicum (Sayyidat al-Bâ r, septembre 1998). Ătudes Arabes ChrĂ©tiennes. 2 vol., en: Parole de lâOrient 27 (2002) & 28 (2003
Estudio clĂnico morfolĂłgico de la deformaciĂłn del borde dorsal del cuello en caballos cruzados de carruaje en Sevilla y CĂłrdoba (AndalucĂa, España)
The aim of this study was to a clinical, morphological of deformation dorsal neck edge on in horse of carriage in Seville and Cordoba, Andalusia, Spain. We studied a total of 110 horses. Clinical examination was performed and morphological considering weight and body condition was measured cervical perimeter. Deformation of the dorsal edge of the neck in all cases studied was evident. Morphological study to consider the deformation of the dorsal edge of the neck taking into account the ridge of the neck (score of 1 to 5) evidenced: for score 0: 33.6%; score 1: 51.8%; Rankings 2: 10%; Rated: 4.5 % for score 4 and 5 no horse was observed in these categories. The average diameter of the neck was 92.54cm, the average neck length was 92.46 cm and the weight was 3.92kg. The statistical result of the degree of deformation of the neck with the weight was 0.465 and the correlation between the degrees of deformation with weight was 0.652. The degree of correlation between neck circumference and body condition was 0.634. In conclusion deformation dorsal edge of the collar in horses used for carriage crossed in Cordoba and Seville, Spain, was observed a prevalence of 66%.Se plantea como objetivo un estudio clĂnico morfolĂłgico de la deformaciĂłn del borde dorsal del cuello en caballos de carruaje en Sevilla y CĂłrdoba, AndalucĂa-España. Fueron estudiados un total de 110 caballos. Se practicĂł un examen clĂnico y morfolĂłgico considerando condiciĂłn corporal peso y se midiĂł el perĂmetro cervical. El estudio morfolĂłgico para considerar la deformaciĂłn del borde dorsal del cuello tomando en cuenta la cresta de la nuca (puntuaciĂłn del 1 al 5) evidencio: para la puntuaciĂłn 0: 33.6%; puntuaciĂłn 1: 51.8%; puntuaciĂłn 2: 10%; puntuaciĂłn: 4.5%, para la puntuaciĂłn 4 y 5 ningĂșn caballo se observĂł en estas categorĂas. El promedio del diĂĄmetro del cuello fue de 92.54cm, el promedio de la longitud del cuello fue de 92.46 cm y el peso fue de 3.92Kg. Los resultados estadĂsticos del grado de deformaciĂłn del cuello con el peso fue de 0.465 y la correlaciĂłn entre el grado de deformaciĂłn con el peso fue de 0.652. El grado de correlaciĂłn entre el perĂmetro cervical y la condiciĂłn corporal fue de 0.634. En conclusiĂłn se observĂł la deformaciĂłn del borde dorsal del cuello en caballos cruzados empleados para carruajes en CĂłrdoba y Sevilla, España, con una prevalencia puntual de 66%
Impact of invasive bees on plant-pollinator interactions and reproductive success of plant species in mixed Nothofagus antarctica forests
Invasive social bees can alter plant-pollinator interactions with detrimental effects on both partners. However, most studies have focused on one invasive bee species, while the interactions among two or more species remain poorly understood. Also, many study sites had a history of invasive bees, being hard to find sites with historical low abundances. In Patagonia, Bombus ruderatus (F.) invasion begun in 1993 and B. terrestris (L.) in 2006. Though honey bees (Apis mellifera L.) introduction started in 1859, their density is still low in some parts. By experimentally increasing honey bee densities, we evaluated the effect of honey bees and bumblebees floral visitation on native pollinator floral visitation, pollen deposition, and reproductive success of three plant species in mixed Nothofagus antarctica forests of northern Patagonia: Oxalis valdiviensis, Mutisia spinosa and Cirsium vulgare. Our results show that exotic bees became the main floral visitors. No negative association was found between invasive bee and native pollinator visitation rates, but there was evidence of potential competition between honey bees and bumblebees. Floral neighborhood diversity played an important role in pollinator behavior. Conspecific pollen deposition was high for all species, while deposition of heterospecific pollen was very high in M. spinosa and C. vulgare. Not as expected, honey bees visitation rate had a negative effect on heterospecific pollen deposition in C. vulgare. For O. valdiviensis, exotic visitation rates increased conspecific pollen deposition, which was positively related to reproductive success. Although exotic bees became main floral visitors, their contribution to reproductive success was only clear for one species.info:eu-repo/semantics/acceptedVersio
Swinging Atwood's Machine: Experimental and Theoretical Studies
A Swinging Atwood Machine (SAM) is built and some experimental results
concerning its dynamic behaviour are presented. Experiments clearly show that
pulleys play a role in the motion of the pendulum, since they can rotate and
have non-negligible radii and masses. Equations of motion must therefore take
into account the inertial momentum of the pulleys, as well as the winding of
the rope around them. Their influence is compared to previous studies. A
preliminary discussion of the role of dissipation is included. The theoretical
behaviour of the system with pulleys is illustrated numerically, and the
relevance of different parameters is highlighted. Finally, the integrability of
the dynamic system is studied, the main result being that the Machine with
pulleys is non-integrable. The status of the results on integrability of the
pulley-less Machine is also recalled.Comment: 37 page
La columna de Winogradsky. Un ejemplo de microbiologĂa bĂĄsica en un laboratorio de educaciĂłn secundaria
Palabras clave: microbiologĂa; columna de Winogradsky; educaciĂłn secundaria.The Winogradsky column. A basic microbiology example in the secondary education laboratoryKeywords: microbiology; Winogradsky column; secondary education
IntroducciĂłn a la anatomĂa externa e interna de un vertebrado. AplicaciĂłn en el laboratorio de educaciĂłn secundaria
Palabras clave: disecciĂłn; sardina; anatomĂa; educaciĂłn secundaria.Introduction to the external and internal anatomy of vertebrate. Application in the secondary education laboratoryKeywords: dissection; sardine; anatomy; secondary education
MicrobiologĂa bĂĄsica en la educaciĂłn secundaria obligatoria: el lavado de las manos
Palabras clave: microbiologĂa; lavado de manos; educaciĂłn secundariaBasic microbiology in compulsory secondary education: washing oneâs handsKeywords: microbiology; washed oneâs hands; secondary educatio
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