نتایج جستجو برای: دندانپزشکی bridge
تعداد نتایج: 56436 فیلتر نتایج به سال:
Investigation of the flow pattern around bridge piers is of utmost importance because of its great effect on destruction of the piers. Despite the hydrodynamical and structural values of designing sections causing minimum turbulence against the flow passing the bridge pier, a review of the literature shows that investigation of the flow pattern around bridge piers with varying section has not b...
There are a number of parameters influencing the dynamic and seismic response of bridges. Of these, two important parameters warranting special notice include: the properties of the neoperenes in the state of connection between girders and columns and the shear stiffness of underlying soil in the level of bridge substructure’s connectivity to the ground. In this paper, the effects of these tw...
Riprap is used to control scouring around the bridge abutment. In order to study the stability of riprap around two bridge abutments with two different shapes, experiments were conducted in a laboratory flume made of Plexiglass in 180 degree bend. In this research, several experiments were done by placing the two bridge abutments made of Plexiglas in a series of riprap. Experiments included tw...
Laboratory measurements on dynamic thermal performance of a thermal bridge at the Division of Building Technology, Kungliga Tekniska Högskolan in Stockholm, are presented in this paper. In order to analyse the measured results, dynamic multi-dimensional modelling that can describe the dynamic behaviour of thermal bridges in a simple and accurate way is required. A network method with a Π-link r...
Learning Bayesian network structure from large-scale data sets, without any expert-specified ordering of variables, remains a difficult problem. We propose systematic improvements to automatically learn Bayesian network structure from data. (1) We propose a linear parent search method to generate candidate graph. (2) We propose a comprehensive approach to eliminate cycles using minimal likeliho...
It is shown that for 2 ≤ t ≤ n− 3, a strict t-SB(n, n− 1) design does not exist, but for n ≥ 3, a non-strict 2-SB(n, n−1) design exists. The concept of large sets for Steiner triple systems is extended to SB designs and examples of a large sets for SB designs are given.
Mathematics is important in science, technology and economics. Unfortunately, in recent decades students' mathematical skills seem to have deteriorated in western countries. Tampere University of Technology (TUT) has an extensive set of measures to support and help freshmen with their mathematics skills. At the start of their studies, all students have to take the Basic Skills Test (BST) in Mat...
We develop four constructions for nowhere-zero 5-ows of 3-regular graphs which satisfy special structural conditions. Using these constructions we show a minimal counterexample to Tutte's 5-ow conjecture is of order 44 and therefore every bridgeless graph of nonorientable genus 5 has a nowhere-zero 5-ow. One of the structural properties is formulated in terms of the structure of the multigraph ...
The morphology, infraciliature and silverline system of three marine peritrichous ciliates, Pseudovorticella zhengae n. sp., P. difficilis (Kahl, 1933) Jankowski, 1976 and P. punctata (Dons, 1918) Warren, 1987, were investigated by observation in vivo and silver-staining methods. The new species is characterized by its body shape, the appearance of the peristomial lip, the number of transverse ...
Tutte’s 5-Flow Conjecture from 1954 states that every bridgeless graph has a nowhere-zero 5-flow. In 2004, Kochol proved that the conjecture is equivalent to its restriction on cyclically 6-edge connected cubic graphs. We prove that every cyclically 6-edge-connected cubic graph with oddness at most 4 has a nowhere-zero 5-flow.
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