This paper develops a new way to create smooth piecewise polynomial free-form spline surfaces from quadmeshes that include T-junctions, where surface strips start or terminate. All mesh nodes can be interpreted as control points of geometrically-smooth, piecewise polynomials that we call GT-splines. GT-splines are B-spline-like and cover T-junctions by two or four patches of degree bi-4. They c...

There is a large body of literature regarding influenza contamination of, transmission by, and elimination from – materials and surfaces. Publications may focus on specific situations or interventions, but the information may be applicable to other situations. Scenarios include hospital surfaces, equipment, and materials (e.g., pajamas) (Jeong et al., 2010), food and food preparation surfaces (...

this paper proposes a gait planning approach to reduce the required friction for a biped robot walking on various surfaces. to this end, a humanoid robot with 18 dof is considered to develop a dynamics model for studying various 3d manoeuvres. then, feasible trajectories are developed to alleviate the fluctuations on the upper body to resemble human-like walking. in order to generate feasible w...

Adherens junctions (AJ) comprise a unique and widespread family of cellular contacts which displays a stable association, within the cells, with actin-containing microfilaments [Geiger et al., 19871. As discussed in several previous articles [Burridge et al., 1988; Woods and Couchman, 19881 AJ may be formed with different surfaces and assume a rather diverse morphology. They may be found in are...

The shape modeling technique based on the implicit surface representation is used for generating threedimensional surface models that interpolate given sets of scattered points. A number of techniques for generating interpolating surfaces have been proposed and significant progress has been made in the last decade [1]. In addition, the implicit surface representation is also useful for interact...

much has been learned in recent years about the factors affecting reflection of sunlight by soils, the influence Knowledge of how surface roughness influences the reflectance of of w on albedo of rough soil surfaces is still poorly sunlight from cultivated soils is useful in various applications, such as estimating albedo values used as inputs to soil temperature models understood (Cresswell et...

We develop a new paradigm for thin-shell finite-element analysis based on the use of subdivision surfaces for: i) describing the geometry of the shell in its undeformed configuration, and ii) generating smooth interpolated displacement fields possessing bounded energy within the strict framework of the Kirchhoff-Love theory of thin shells. The particular subdivision strategy adopted here is Loo...

In the present study, the condensation and evaporation heat transfer performance of a zeotropic refrigerant mixture (HFC32/HFC125/HFC134a) inside horizontal tubes with smooth, grooved or cross·grooved inner surfaces was investigated experimentally. The cross-gTOoved tube showed the highest heat transfer coefficient for both condensation and evaporation with the zeotropic mixture. Its heat trans...

Sequence stratigraphy is the study of genetically related facies within a framework of chronostratigraphically significant surfaces, where the depositional sequence is considered to be the fundamental unit for sequence-stratigraphic analysis (Van Wagoner et al., 1990). The depositional sequence is defined as a genetically related succession of strata bounded by unconformable surfaces and their ...