o bjectives: heat-polymerized acrylic resin has been the most commonly used denture base material for over 60 years. however, the mechanical strength of acrylic resin is not adequate for long-term clinical performance of dentures. consequently, fracture is a com- mon clinical occurrence, which often occurs in the midline of denture base.this study aimed to evaluate the efficacy of cold cure and...

The shear strength of the soil refers to ultimate against failure, which is one important indicators used measure slope stability. This paper presents a simulation direct tests on root-soil composites with different root embedding angles under stress conditions. By comparing and analyzing results ABAQUS software laboratory test results, enhancement effect plant roots was explored. Conclusions c...

Decision tree learning represents a well known family of inductive learning algorithms that are able to extract, from the presented training sets, classification rules whose preconditions can be represented as disjunctions of conjunctions of constraints. The name of decision trees is due to the fact that the preconditions can be represented as a tree where each node is a constraint and each pat...

the main challenge of a search engine is ranking web documents to provide the best response to a user`s query. despite the huge number of the extracted results for user`s query, only a small number of the first results are examined by users; therefore, the insertion of the related results in the first ranks is of great importance. in this paper, a ranking algorithm based on the reinforcement le...

BACKGROUND Food reinforcement and dopaminergic activity may influence food consumption, but research on whether they interact has not been performed. OBJECTIVE We assessed the effects of food reinforcement and the interaction of food reinforcement with the dopamine transporter (SLC6A3) genotype and the dopamine D(2) receptor (DRD(2)) genotype on energy consumption. DESIGN We studied food-co...

Root anchoring provides nonnegligible assistance to prevent soil erosion and stabilize slopes. The ability of plants suffers a tremendous impact from the conditions root characteristics. To reveal reinforcement effect, group pullout tests was conducted on five different tree systems (Pinus tabulaeformis, Betula platyphylla, Larix gmelinii, Quercus mongolica, Ulmus pumila) with moisture contents...

three unconventional details for plastic hinges of bridge columns subjected to seismic loads were developed, designed, and implemented in a large-scale, four-span reinforced concrete bridge. shape memory alloys (sma), special engineered cementitious composites (ecc), elastomeric pads embedded into columns, and post-tensioning were used in three different piers. the bridge model was subjected to...

the organo-metal salt of aluminum triacrylate (alta) with a general formula of (ch2=chcoo)3al was  synthesized  as  a  reactive  fller  for  elastomers through a two-step synthetic procedure. fourier transform-infrared spectroscopy (ftir), dsc and dta were employed for alta analysis and to study its cure characteristics. in this research, two composites based on ethylene propylene diene monomer...

The purpose of this study was to examine self-reinforcement as an agent of behavior change with children who were deficient in desired attention behaviors. Twenty three first and second grade school children were taught through external reinforcement procedures to raise their level of attention on a simple discrimination task. Subjects in one group were then taught to manage their cwn reinforce...