Search

Media production workflows become increasingly distributed and heterogeneous, requiring the use of multilingual content from networked media repositories. Many tasks of professionals in media production can be efficiently supported by automatic content analysis (e.g., speech recognition, quality analysis, action detection) and advanced semantic search and retrieval services. We present a system developed in the TOSCA-MP project, based on these technologies that enables a powerful semantic search & retrieval of audiovisual content. The system executes media analysis workflows using a flexible framework designed as a service oriented architecture. The TOSCA-MP architecture includes a task adaptive service orchestration based on business processes which handles automatic metadata extraction services with optional manual verification. The system also supports distributed heterogeneous repositories. We will briefly introduce these components. Finally, the system enables powerful new semantic search & visualization techniques, for which a dedicated semantic search engine has been created. We describe in detail the semantic search engine including its novel ways of content visualization and navigation. We also show how the TOSCA-MP architecture efficiently supports these user interfaces. Further, we discuss the feedback received by professional users who have successfully tested the system during evaluation workshops.

This paper aimed to evaluate the initial growth of "mutambo" seedlings in different conditions of light intensity and treatments with gibberellic acid (GA). The seedlings were kept under full sun and 50% of shading. Sixty days after the emergence, seedlings were sprayed with: 1) 100 mg L(-1) GA(3); 2) 200 mg L(-1) GA(3); 3) control. At the end of the appraisals, seedlings height under 50% of shading was compared to the height that were growing under full sun with 200 mg L(-1) GA. Stem diameter was lower under shading. Leaf area did not vary among the treatments, but the root system growth was higher under full sun and did not vary among GA levels. The number of stomata, trichomes and epidermal cells on adaxial and abaxial sides was higher under full sun. Total dry masses of leaf and root were highe runder full sun and with 200 mg L(-1) GA application. "Mutambo" seedlings presented a higher initial growth under full sun, although with a lower height, diameter, and lenght of the largest root and total dry masses of leaf and root were higher. A concentration with 200 mg L(-1) promoted a higher growth.

Herbicides and plant growth regulators are often used in sugarcane management. However, the use of non-selective pesticides can cause adverse effects on the efficiency of beneficial insects in integrated pest management. Within this context, this study aimed to evaluate the effect of such products on the immature stages of the parasitoid Trichogramma galloi. Eggs of Diatraea saccharalis containing the parasitoid at the egg-larva stage and at the prepupal and pupal stages were immersed in test solutions of the following pesticides (maximum recommended doses for sugarcane): herbicides clomazone and diuron + hexazinone, and plant growth regulators trinexapac-ethyl and sulfometuron-methyl. The biological properties evaluated were emergence (F1 and F2) and number of eggs parasitized by T. galloi (F1). The products were classified according to percentage of reduction in emergence and parasitism: harmless (99%). The pesticides evaluated were considered to be harmless or slightly harmful to immature T. galloi and, thus, their use should be preferred for preserving this parasitoid species in sugarcane management programs.