Technical writing in professional environments, such as user manual authoring for new products, is a task that relies heavily on reuse of content. Therefore, technical content is typically created following a strategy where modular units of text have references to each other. One of the main challenges faced by technical authors is to avoid duplicating existing content, as this adds unnecessary effort, generates undesirable inconsistencies, and dramatically increases maintenance and translation costs. However, there are few computational tools available to support this activity. This paper investigates the use of different similarity methods for the task of identification of reuse opportunities in technical writing. We evaluated our results using existing ground truth as well as feedback from technical authors. Finally, we also propose a tool that combines text similarity algorithms with interactive visualizations to aid authors in understanding differences in a collection of topics and identifying reuse opportunities.
ABSTRA SfPrevious studies have suggested that pulsed laser energy can enhance the bond strengths to dentin of certain dentinal bonding agents. The objective of this study was to investigate and compare the shear bond strength of Scotchbond 2 dentin adhesive (3M) to continuous-wave carbon dioxide laser-irradiated vs. unirradiated dentin. Forty extracted molars were mounted in an acrylic base with the crowns exposed. Dentin surfaces of diameters greater than 5mm were cut perpendicular to the base of the acrylic, treated for 60 seconds with dentin primer, air-dried, and randomly distributed into two groups. The experimental was exposed to CW-C02 laser irradiated at 13.5W for 0.10 sec., and a spot diameter of 5mm. The other group served as the nonirradiated control. A brass ring of 4mm internal diameter was placed on each surface and filled to a depth of 1.0mm with SB 2 and cured. P-50 (3M) composite was condensed and cured into the rings in three one-millimeter increments and then shear strength tested on an Instron machine using a crosshead speed of 0.005 in/mm. The mean shear strength and strain values for the irradiated and control group were 2. 193 MPa, 3.87 x i03, 1 .023 MPa, and 3.3 1 x iO, respectively. Pillai's Criterion and the Univariate F-test indicated that the mean shear strengths were significantly different (p=O.Ol49). These results suggest that dentin bond shear strengths may be enhanced by CW-CO2 laser pretreatment.
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