2,206 research outputs found

    Increasing awareness of recycling programs for elementary aged children through interactive multimedia

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    The purpose of this thesis is to create an effective interactive multimedia training method for elementary aged children, on recycling awareness. The age group chosen for this project is children 8 to 11. This report will focus on the goals and objectives of the project, the areas being researched and the procedure, along with the outcome of the project. In children\u27s psychology, understanding of different stages of intellectual development of a child is critical. According to Piaget, concrete operational thought is made up of operations-mental actions that allow children to do mentally what they had done physically before. Concrete operations are also mental actions that are reversible. ...Thus, a concrete operation is a reversible mental action on real, concrete objects. The age group of children chosen for this project is in the period of concrete operational development. They operate on the basis of what they can see and feel. They go much more with intuition or perception. For the children, it\u27s hard to understand things that they can\u27t visualize. A goal of this project was to be sure that children would be able to understand easily. This project, however, should emphasize concrete objects (i.e. pictures, drawings, texts) to provide the children with a better understanding of recycling through interactive multimedia. In addition, in the nature of interaction with this age group of children, the real issue lies in how to communicate effectively to develop their awareness and their respect for the natural environment. Therefore, this interactive multimedia project must be kept simple in functionality, consistent in feedback and varied in the use of multimedia. The method also needs to include a sense of humor, build confidence, and educational vision. The objective of this project is to design an effective multimodal interface for a children\u27s interactive multimedia computer game that employs simple texts, pictures, graphics, sound and animation. By simply pointing and clicking on particular hot spots with a computer mouse, graphics and sound come alive on a computer screen. The significance of this project is to develop the children\u27s awareness and their respect for the natural environment through interaction with a computer

    Difference in the color stability of direct and indirect resin composites

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    Indirect resin composites are generally regarded to have better color stability than direct resin composites since they possess higher conversion degree. OBJECTIVE: The present study aimed at comparing the changes in color (ΔE) and color coordinates (ΔL, Δa and Δb) of one direct (Estelite Sigma: 16 shades) and 2 indirect resin composites (BelleGlass NG: 16 shades; Sinfony: 26 shades) after thermocycling. MATERIAL AND METHODS: Resins were packed into a mold and light cured; post-curing was performed on indirect resins. Changes in color and color coordinates of 1-mm-thick specimens were determined after 5,000 cycles of thermocycling on a spectrophotometer. RESULTS: ΔE values were in the range of 0.3 to 1.2 units for direct resins, and 0.3 to 1.5 units for indirect resins, which were clinically acceptable (Δ

    Elastic constants of borocarbides. New approach to acoustic Measurement technique

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    A new version of the phase method of determining the sound velocity is proposed and implemented. It utilizes the ``Nonius'' measurement technique and can give acceptable accuracy (~1%) in samples of submillimeter size. Measurements of the sound velocity are made in single-crystal samples of the borocarbides RNi2B2C (R = Y,Lu,Ho). The elastic constants and the Debye temperature are calculated.Comment: 5 figures, 2 table

    Spectral Deconvolution Analysis of Mafic Mineral in Irregular Mare Patches on the Moon

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    Irregular mare patches (IMPs), recently discovered on the Moon, are eruptions of magma on the lunar surface, and their origins are still in question. While prior studies on IMPs have mainly focused on optical image analysis, in this study, an analysis of the characteristics of minerals is performed exemplary for the first time. Modified Gaussian model (MGM) deconvolution was applied to the infrared spectrum to confirm the properties of the mafic mineral. Mafic minerals were analyzed for 6 olivine-rich (Ol-rich) IMPs out of 91 currently reported, and only 4 of them yielded results of significance. All four sites showed more abundance of Fe than Mg, and manifested a weak relationship with Mg-suite rock. However, a problem was discovered during the MGM application process due to pilot implementation. In order to solve this problem, it is required to adjust the MGM initial condition settings more precisely and to increase the signal to noise ratio of the observation data. Moreover, it is necessary to analyze the mineral properties for all IMPs considering minerals other than Ol and utilize them to deduce the origin of the IMPs

    CORRELATION BETWEEN LEUKOCYTE TELOMERE LENGTH AND DRUG ELUTING STENT STRUT COVERAGE BY OPTICAL COHERENCE TOMOGRAPHY

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    El cementiri de Sant Andreu fou inaugurat el 1839 i pertanyia a Sant Andreu del Palomar que formava part del Pla de Barcelona. Sembla que fou la primera població del Pla que va disposar de cementiri desprès de la construcció del de Poblenou

    Vesicocutaneous Fistula Presenting Groin Abscess and Chronic Osteomyelitis in Pubic Bone

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    The authors report a case of bladder fistula associated with a medial thigh cutaneous fistula and chronic osteomyelitis of the pubic bone 11 years after surgery for a pelvic bone fracture and bladder rupture. In the presenting case, despite the clinical suspicion, none of the diagnostic tools demonstrated the bladder fistula preoperatively. This case suggests that bladder repair should be prepared, even if the bladder fistula cannot be confirmed by imaging studies because the amount of urine leakage can be minimal or the fistula can close spontaneously

    Little-Parks effect and multiquanta vortices in a hybrid superconductor--ferromagnet system

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    Within the phenomenological Ginzburg-Landau theory we investigate the phase diagram of a thin superconducting film with ferromagnetic nanoparticles. We study the oscillatory dependence of the critical temperature on an external magnetic field similar to the Little-Parks effect and formation of multiquantum vortex structures. The structure of a superconducting state is studied both analytically and numerically.Comment: 7 pages, 1 figure. Submitted to J. Phys.: Condens. Mat
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