Interoperability between Multimedia Collections for Content and Metadata-Based Searching

Artiste is a European project developing a cross-collection search system for art galleries and museums. It combines image content retrieval with text based retrieval and uses RDF mappings in order to integrate diverse databases. The test sites of the Louvre, Victoria and Albert Museum, Uffizi Gallery and National Gallery London provide their own database schema for existing metadata, avoiding the need for migration to a common schema. The system will accept a query based on one museum’s fields and convert them, through an RDF mapping into a form suitable for querying the other collections. The nature of some of the image processing algorithms means that the system can be slow for some computations, so the system is session-based to allow the user to return to the results later. The system has been built within a J2EE/EJB framework, using the Jboss Enterprise Application Server

African vegetable diversity in the limelight: project activities by ProNIVA.

Poster presented at Botanical Congress. Hamburg (Germany), 3-7 Sep 200

Utilization of selected Information Technology Enabled Systems (ITES) by agricultural extensionists of Kerala

Several information technology enabled systems (ITES) are available for providing valuable information to agricultural extensionists which in turn would help them to assist famers, and increase crop production. The present study was aimed at assessment of knowledge and extent of use of selected ITES among agricultural extensionists of Kerala. Data were collected from randomly selected 60 computer literate agricultural officers and 60 computer literate agricultural assistants of Kerala State. The study revealed that knowledge of agricultural extensionists on web browsing and agricultural portals was comparatively higher. The knowledge of agricultural expert system and digitized databases was found to be very low, with 79 percent and 81 percent respectively falling in the low category. On the other hand the extent of use of all the selected ITES was found low among the agricultural extensionists. This points figures towards the need of sensitizing agricultural extensionists on the importance and value of ITES

4-(Dimethyl­amino)­pyridinium trans-diaqua­bis­[oxalato(2−)-κ2 O 1,O 2]chromate(III)

In the title salt, (C7H11N2)[Cr(C2O4)2(H2O)2], the asymmetric unit contains one half-cation and one half-anion. The Cr atom, the C and N atoms involved in C— N(exocyclic) bonding and the N and H atoms of N—H groups lie on twofold rotation axis. The CrIII atom of the complex anion is six-coordinated in a distorted (4 + 2) octa­hedral geometry with four equatorial O atoms of two nearly coplanar oxalate and two quasi-axial aqua O atoms. In the crystal, the protonated N atoms of the pyridine rings are hydrogen bonded to the carbonyl O atoms of the anions, forming chains along [010]. These chains are connected by lateral O—H⋯O hydrogen bonds, stabilizing the structure

Correlates of Delayed Diagnosis among Human Immunodeficiency Virus-Infected Pulmonary Tuberculosis Suspects in a Rural HIV Clinic, South Africa

Delay in pulmonary tuberculosis (PTB) diagnosis is one of the major factors that affect outcome and threatens continued spread of tuberculosis. This study aimed at determining factors associated with delayed PTB diagnosis among human immunodeficiency virus (HIV) infected individuals. Methods. A retrospective observational study was done using clinic records of HIV-infected PTB suspects attending an HIV/AIDS clinic at Tintswalo rural hospital in South Africa (SA) between January 2006 and December 2007. Using routine clinic registers, 480 records were identified. Results. PTB diagnosis delay was found among 77/176 (43.8%) of the patients diagnosed with PTB. The mean delay of PTB diagnosis was 170.6 days; diagnosis delay ranged 1–30 days in 27 (35.1%) patients, 31–180 days in 24 (33.8%) patients; 24 (31.2%) patients remained undiagnosed for ≥180 days. Independent factors associated with delayed diagnosis were: older age >40 years (Odds Ratio (OR) 3.43, 95% CI 1.45–8.08) and virological failure (OR 2.72, 95% CI 1.09–6.74). Conclusion. There is a considerable delayed PTB diagnosis among HIV-infected patients in rural SA. Older patients as well as patients with high viral load are at a higher risk of PTB diagnosis delay. Therefore efforts to reduce PTB diagnosis delay need to emphasised

Performance and Security of Group Signature in Wireless Networks

A Group signature protocol is a cryptographic scheme that decouples a user identity and location from verification procedure during authentication. In a group signature scheme, a user is allowed to generate signatures on behalf of other group members but identity and location information of the signer is not known by a verifier. This ensures privacy, authentication and unlinkability of users. Although group signature is expensive to implement, its existential anonymity, non-repudiation and untraceablility properties make it attractive especially for resources-constrained devices in wireless network. A general group signature scheme usually contains six basic phases: setup (or key generation), join, message signing (or signature generation), signature verification, open and user revocation. In this paper, an evaluation of the performance of group signature based on three of the phases mentioned above is considered and its security in wireless networks examined. The key generation, signing and verification algorithms are implemented in Java 8. A proof of security of group signature by implication is also presented

Interagir sans interpréter Apport d'une IA pour autonomiser un objet robotique

En raison de la situation sanitaire actuelle (Covid-19), WACAI est reporté du 02 au 04/06/2021International audienceNous proposons de présenter dans cet article l’utilisation d’une carte auto-organisatrice dans le processus de décision de l’action d’un objet robotisé muni d’un capteur, ici une caméra, interagissant avec un ou plusieurs humains. Cette carte utilise le capteur pour s’adapter à ses interlocuteur, ici les traits de leur visage, et ainsi ajuster ses mouvements au comportement des humains, sans toutefois les interpréte