Performance of Soil Termiticides in Open Field and Under Roof Overhang

The study investigated the difference in performance of termiticides using concrete slab test installed in open field and under roof overhang.  Soil treated with cypermethrin and chlorpyrifos under roof overhang showed lower percentage of termite penetration compared to those in open field in each year of evaluation.  However, in both conditions termites were already able to penetrate treated plots during the first year of trial.  The high percentage of plots attacked by termites could be attributed to several environmental factors such as presence of a wider diversity of termite species, moisture, temperature, soil properties, microbial communities, etc. common in tropical climates.  The results from these two modes of installation could affect protocol used for field trial and the granting of registration or performance warranty to candidate termiticides in tropical countries

Occlusion Handling using Semantic Segmentation and Visibility-Based Rendering for Mixed Reality

Real-time occlusion handling is a major problem in outdoor mixed reality system because it requires great computational cost mainly due to the complexity of the scene. Using only segmentation, it is difficult to accurately render a virtual object occluded by complex objects such as trees, bushes etc. In this paper, we propose a novel occlusion handling method for real-time, outdoor, and omni-directional mixed reality system using only the information from a monocular image sequence. We first present a semantic segmentation scheme for predicting the amount of visibility for different type of objects in the scene. We also simultaneously calculate a foreground probability map using depth estimation derived from optical flow. Finally, we combine the segmentation result and the probability map to render the computer generated object and the real scene using a visibility-based rendering method. Our results show great improvement in handling occlusions compared to existing blending based methods

A master plan for an educational television broadcasting system for the Philippines

Thesis (M.S.)--Boston Universit

Professional Masters, have you seen my credentials?

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Repellent Effects of Annona Crude Seed Extract on the Asian Subterranean Termite Coptotermes gestroi Wasmann (Isoptera:Rhinotermitidae)

Crude seed extract of three tropical fruits belonging to the family Annonaceae, viz., sweetsop (Annona squamosa L.), soursop (A. muricata L.) and biriba (Rollinia mucosa Baill.) were investigated for their repellent effects on the Asian subterranean termite Coptotermes gestroi Wasmann (Isoptera: Rhinotermitidae).  Results of laboratory feeding bioassay (choice and no-choice) indicated that crude extract of A. squamosa, A. muricata and R. mucosa had feeding deterrent effects on C. gestroi.  Termites showed significant avoidance behavior to filter paper treated with extracts of the three Annona species investigated.  Soil barrier test revealed that Annona extracts were able to limit penetration of C. gestroi in laboratory tunneling test.  The results suggest that Annona seed extracts may offer an alternative source of natural insecticide against subterranean termites