Stayaverage inc.

Imagine a place where people only perceive you as the best version of you: “perfect” appearance and “perfect” life. On social media it’s easy to create that perfect digital mask. Change your looks by editing or filtering photos to make your life appear faultless. But, it’s also easy to forget that other users can do the exact same thing and even easier to compare ourselves to these seemingly ideal faces and lives. My project is a commentary on the authenticity of people on social media by using a collection of illustrations, fake advertisements, and edited photos posted on Instagram. I created a devilish character to “run an instagram account/fake company” called “Stay Average Inc.” to persuade people to fall into the trap of changing their appearance with the goal of looking “better” or “more attractive” on apps like facebook and instagram. I wanted to personify the devil in your head that tells you every post and every selfie on social media is real, and convince you to stay like the average social media user: posting edited selfies and hiding every part of you that you don’t like

ACCESSORY MENTAL FORAMEN (AMF) IN THE BYZANTINE POPULATION OF GREAT GÖZTEPE TUMULUS/SAFRANBOLU

Variations are one of the most important criteria to present the similarities and differences among populations and individuals. There are different variations that can also be observed on the mandible. One of these variations is the accessory mental foramen (AMF), which is rarely seen on jaws. The paleodemographic analyses conducted on the Byzantine skeletons found in Göztepe Tumulus showed that the population consisted of 24 individuals. Of those 24 individuals, the mandibles of 14 adults were examined macroscopically, and an AMF was found on 3 of them. The examination of the mental foramens (MFs) in terms of their shape showed that 9 oval and 5 circular MFs were found on the left sides of 14 mandibles, and 7 oval and 6 circular MFs were found on the right sides. The present study is important because it is the first study conducted on the AMFs belonging to the Byzantine population in Anatolia

Isogeometric FEM-BEM coupled structural-acoustic analysis of shells using subdivision surfaces

We introduce a coupled finite and boundary element formulation for acoustic scattering analysis over thin shell structures. A triangular Loop subdivision surface discretisation is used for both geometry and analysis fields. The Kirchhoff-Love shell equation is discretised with the finite element method and the Helmholtz equation for the acoustic field with the boundary element method. The use of the boundary element formulation allows the elegant handling of infinite domains and precludes the need for volumetric meshing. In the present work the subdivision control meshes for the shell displacements and the acoustic pressures have the same resolution. The corresponding smooth subdivision basis functions have the $C^1$ continuity property required for the Kirchhoff-Love formulation and are highly efficient for the acoustic field computations. We validate the proposed isogeometric formulation through a closed-form solution of acoustic scattering over a thin shell sphere. Furthermore, we demonstrate the ability of the proposed approach to handle complex geometries with arbitrary topology that provides an integrated isogeometric design and analysis workflow for coupled structural-acoustic analysis of shells

Premarital and marital problems and problem-solving styles in married and divorced Turkish professional women and men

Close relationships play an integral role in our lives. Problems associated with close relationships could have social and psychological effects on individuals. Research has documented that disruption of a relationship is considered as one of the major life stressors. In this context, the present research aims to identify differences between the intact marriages and those which ended in divorce, in Turkey, in relation to problems experienced during premarital level and marital level. Furthermore, this research has examined the perceived problem solving behaviour of the currently married and divorced individuals with respect to premarital and marital problems experienced. Retrospective survey interviewing was adopted as a data collection strategy in order to study self-reported problems and problem-solving behaviour by respondents. It has been hoped that the findings from the present study would be beneficial for relationship enhancement programs to be developed in Turkey. [Continues.

Parallel iterative solution of the incompressible Navier-Stokes equations with application to rotating wings

We discuss aspects of implementation and performance of parallel iterative solution techniques applied to low Reynolds number flows around fixed and moving rigid bodies. The incompressible Navier-Stokes equations are discretised with Taylor-Hood finite elements in combination with a semi-implicit pressure-correction method. The resulting sequence of convection-diffusion and Poisson equations are solved with preconditioned Krylov subspace methods. To achieve overall scalability we consider new auxiliary algorithms for mesh handling and assembly of the system matrices. We compute the flow around a translating plate and a rotating insect wing to establish the scaling properties of the developed solver. The largest meshes have up to 132 × 10^6 hexahedral finite elements leading to around 3.3 × 10^9 unknowns. For the scalability runs the maximum core count is around 65.5 × 10^3. We find that almost perfect scaling can be achieved with a suitable Krylov subspace iterative method, like conjugate gradients or GMRES, and a block Jacobi preconditioner with incomplete LU factorisation as a subdomain solver. In addition to parallel performance data, we provide new highly-resolved computations of flow around a rotating insect wing and examine its vortex structure and aerodynamic loading.This research was supported by the Engineering and Physical Sciences Research Council (EPSRC) through grant # EP/G008531/1. Additional support was provided by the Czech Science Foundation through grant 14-02067S, and by the Czech Academy of Sciences through RVO:67985840. The presented computations were performed on HECToR at the Edinburgh Parallel Computing Centre through PRACE-2IP (FP7 RI-283493).This is the final version of the article. It first appeared from Elsevier via http://dx.doi.org/10.1016/j.compfluid.2015.08.02

Infill topology and shape optimisation of lattice-skin structures

Lattice-skin structures composed of a thin-shell skin and a lattice infill are widespread in nature and large-scale engineering due to their efficiency and exceptional mechanical properties. Recent advances in additive manufacturing, or 3D printing, make it possible to create lattice-skin structures of almost any size with arbitrary shape and geometric complexity. We propose a novel gradient-based approach to optimising both the shape and infill of lattice-skin structures to improve their efficiency further. The respective gradients are computed by fully considering the lattice-skin coupling while the lattice topology and shape optimisation problems are solved in a sequential manner. The shell is modelled as a Kirchhoff-Love shell and analysed using isogeometric subdivision surfaces, whereas the lattice is modelled as a pin-jointed truss. The lattice consists of many cells, possibly of different sizes, with each containing a small number of struts. We propose a penalisation approach akin to the SIMP (solid isotropic material with penalisation) method for topology optimisation of the lattice. Furthermore, a corresponding sensitivity filter and a lattice extraction technique are introduced to ensure the stability of the optimisation process and to eliminate scattered struts of small cross-sectional areas. The developed topology optimisation technique is suitable for non-periodic, non-uniform lattices. For shape optimisation of both the shell and the lattice, the geometry of the lattice-skin structure is parameterised using the free-form deformation technique. The topology and shape optimisation problems are solved in an iterative, sequential manner. The effectiveness of the proposed approach and the influence of different algorithmic parameters are demonstrated with several numerical examples.Comment: 20 pages, 17 figure

Manifold-based isogeometric analysis basis functions with prescribed sharp features

We introduce manifold-based basis functions for isogeometric analysis of surfaces with arbitrary smoothness, prescribed $C^0$ continuous creases and boundaries. The utility of the manifold-based surface construction techniques in isogeometric analysis was demonstrated in Majeed and Cirak (CMAME, 2017). The respective basis functions are derived by combining differential-geometric manifold techniques with conformal parametrisations and the partition of unity method. The connectivity of a given unstructured quadrilateral control mesh in $\mathbb R^3$ is used to define a set of overlapping charts. Each vertex with its attached elements is assigned a corresponding conformally parametrised planar chart domain in $\mathbb R^2$, so that a quadrilateral element is present on four different charts. On the collection of unconnected chart domains, the partition of unity method is used for approximation. The transition functions required for navigating between the chart domains are composed out of conformal maps. The necessary smooth partition of unity, or blending, functions for the charts are assembled from tensor-product B-spline pieces and require in contrast to earlier constructions no normalisation. Creases are introduced across user tagged edges of the control mesh. Planar chart domains that include creased edges or are adjacent to the domain boundary require special local polynomial approximants. Three different types of chart domain geometries are necessary to consider boundaries and arbitrary number and arrangement of creases. The new chart domain geometries are chosen so that it becomes trivial to establish local polynomial approximants that are always $C^0$ continuous across tagged edges. The derived non-rational manifold-based basis functions are particularly well suited for isogeometric analysis of Kirchhoff-Love thin shells with kinks