In this study we estimate urban traffi c fl ow using GPS-enabled taxi trajectory data in Qingdao, China, and examine the capability of the betweenness centrality of the street network to predict traffi c fl ow. The results show that betweenness centrality is not a good predictor variable for urban traffi c fl ow, which has, theoretically, been pointed out in existing literature. With a critique...

In this study, the effects of surface roughness differences vehicle coating materials (paint, paste, special applications, etc.) on aerodynamic drag coefficient were inves-tigated using finite element method. For this, forces and aerody-namic coefficients for speeds between 40-150 km/hours calculated a 1/20 scale designed by package program defining body parts front-rear window separately assig...

in this article, we propose an adaptive grid based on mesh equidistribution principle for two-parameter convection-diffusion boundary value problems with continuous and discontinuous data. a numerical algorithm based on an upwind finite difference operator and an appropriate adaptive grid is constructed. truncation errors are derived for both continuous and discontinuous problems. parameter uni...

results a low adc value was associated with lymph node metastasis (p < 0.01) and with high ki-67 protein levels (p = 0.03). there were no significant differences in the adc values among the histological grade (p = 0.48), molecular subtype (p = 0.51), tumor size (p = 0.46), and p53 protein level (p = 0.62). conclusion the pre-operative use of the 3.0 tesla dwi could provide information about the...

We report the design approach of a home-built rotary substrate holder on simple rotation stages for low-pressure vacuum applications. The result designing and fabricating that it can be successfully used to rotate in application without pressure fl uctuations leakage. Then we investigated suitable thin fi lm deposition by optimal multilayer coatings under three variable operating conditions: Sp...

Most granular materials in industrial applications and natural settings are size-polydisperse, but most models and simulations of segregation consider only bidisperse particle distributions. Here, we extend our recently developed theoretical advection–diffusion–segregation model to polydisperse particle distributions. To test the theoretical approach, we model and simulate grains log-normally d...

JANMOHAMMADI MOHSEN, SABAGHNIA NASER, NOURAEIN MOJTABA. 2014. Path Analysis of Grain Yield and Yield Components and Some Agronomic Traits in Bread Wheat. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 62(5): 945–952. Development of new bread wheat cultivars needs effi cient tools to monitor trait association in a breeding program. This investigation was aimed to charact...

Segregation of granular materials composed of different-sized particles has important repercussions in various industrial processes and natural phenomena, but predicting size segregation remains a challenging problem. To address this problem, we have developed a theoretical model that captures the interplay between advection, segregation, and diffusion in size bidisperse granular materials. The...

background: linear and angular measurements such as a point, nasion, b point (anb) angle and wits appraisal index are not accurate enough to evaluate sagittal relationship of the jaws. the aim of this study was to evaluate and compare the range of ì and â angles in 6-17-year-old children of isfahan, having normal occlusion. materials and methods: this was an analytical descriptive study. for th...

This paper explores how the persistently popular "classical" logic of benefit based taxation, in which an individual’s benefit from public goods is tied to his or her income-earning ability, can be incorporated into modern optimal tax theory. If Lindahl’s methods are applied to that view of benefits, first-best optimal policy can be characterized analytically as depending on a few potentially e...