Search results for "gea"
showing 10 items of 1040 documents
Geometric Algebra Rotors for Sub-symbolic Coding of Natural Language Sentences
2007
A sub-symbolic encoding methodology for natural language sentences is presented. The procedure is based on the creation of an LSA-inspired semantic space and associates rotation operators derived from Geometric Algebra to word bigrams of the sentence. The operators are subsequently applied to an orthonormal standard basis of the created semantic space according to the order in which words appear in the sentence. The final rotated basis is then coded as a vector and its orthogonal part constitutes the sub-symbolic coding of the sentence. Preliminary experimental results for a classification task, compared with the traditional LSA methodology, show the effectiveness of the approach.
Research on Vocabulary Sizes and Codebook Universality
2014
Published version of an article in the journal: Abstract and Applied Analysis. Also available from the publisher at: http://dx.doi.org/10.1155/2014/697245 Open Access Codebook is an effective image representation method. By clustering in local image descriptors, a codebook is shown to be a distinctive image feature and widely applied in object classification. In almost all existing works on codebooks, the building of the visual vocabulary follows a basic routine, that is, extracting local image descriptors and clustering with a user-designated number of clusters. The problem with this routine lies in that building a codebook for each single dataset is not efficient. In order to deal with th…
Supplementary material from Competition between strains of Borrelia afzelii inside the rodent host and the tick vector
2018
Supplementary material supporting the paper
CEOs entrenchment and shareholders' wealth
1998
In the agency relation between the shareholders and the CEO, everybody try toreinforce his or her position. For the CEO, it means the pursuit of a betterentrenchment, which allows him to reduce the risk of being dismissed. Theentrenchment model develops the importance for the CEO to get internal or externalconnections and to make efforts in order to attain a higher performance. From a sampleof 1747 annual observations concerning 258 CEOs of public firms for the 1966-1990period, empirical measures allow us to estimate the importance of internal networksand past performance by establishing a measure of CEO entrenchment. Furthermore,we observed, for the shareholders, the existence of an optimu…
Contestation de la validité d'un acte de procédure réalisé sans pouvoir par le représentant d'une société
2008
International audience; Note sous Cour de cassation (com.) 26 février 2008, Société White c/ M. et Mme Koziello, M. Arnaud ès qual
The diagnosis and management of gastric cancer: Expert discussion and recommendations from the 12th ESMO/World Congress on Gastrointestinal Cancer, B…
2011
Well-recognized experts in the field of gastric cancer discussed during the 12th European Society Medical Oncology (ESMO)/World Congress Gastrointestinal Cancer (WCGIC) in Barcelona many important and controversial topics on the diagnosis and management of patients with gastric cancer. This article summarizes the recommendations and expert opinion on gastric cancer. It discusses and reflects on the regional differences in the incidence and care of gastric cancer, the definition of gastro-esophageal junction and its implication for treatment strategies and presents the latest recommendations in the staging and treatment of primary and metastatic gastric cancer. Recognition is given to the ne…
Design and Characterization of a Miniature Hydraulic Power Supply for High-Bandwidth Control of Soft Robotics
2020
Soft robotics holds enormous promise for a wide class of applications. However, system controllability, bandwidth, portability, and energy efficiency of soft robot power supplies are often inadequate. Soft robotics desperately needs improved solutions to drive soft actuators either pneumatically or hydraulically. This research paper offers a contribution to bridge this gap. It deals with small-scale power supplies for hydraulically-driven soft robots based on fluidic elastomer actuators in the power range 5-400 W. A design procedure for such power supplies is developed with an emphasis on high-bandwidth control. The performance requirements are established based on a literature survey, and …
Il patrimonio "cavo". Architetture ipogee e spazio idraulico nella piana di Palermo
2018
The valorisation policies and protection of “visible” architectural heritage are often promoted by the public opinion, that immediately perceives in the artefacts or landscape degradation the risk of an irreparable loss. Conversely, the safeguard of the underground built heritage is ever more difficult to achieve. It is the case of the "hollow architecture" functional to ensuring water provisioning in the Plain one of Palermo, the so-called “horizontal wells”. The most interesting aspect is the complex dense network of canals for the abstraction of groundwater resources. These artefacts date back to the sixteenth century – though an older dating is not to be excluded – and they outline the …
Coupling Mechanics of Antikythera Gearwheels
2012
This paper discusses the gear coupling mechanics of the ancient Antikythera mechanism, among whose distinctive characteristics was the triangular shaping of the teeth. The engagement of the tooth pairs is analyzed in detail, estimating the temporal variation of the speed ratio due to the back and forth shifting of the relative instant center. The admissibility of the theoretical contact points is carefully checked, and the magnitude of the successive tooth collisions is calculated together with the energy losses arising from the particular nature of the coupling. Some interesting results are that only one tooth pair turns out to be active at each time instant and the real path may belong on…