Nauki Inżynieryjno-Techniczne
http://repozytorium.ukw.edu.pl//handle/item/9
2019-12-12T00:35:18ZTraditional Versus Mechatronic Toys in Children with Autism Spectrum Disorders
http://repozytorium.ukw.edu.pl//handle/item/5295
Traditional Versus Mechatronic Toys in Children with Autism Spectrum Disorders
Mikołajewski, Dariusz; Prokopowicz, Piotr; Mikołajewska, Emilia; Wójcik, Grzegorz Marcin; Masiak, Jolanta
Functional and developmental outcomes in children (both healthy and with developmental disorders) can be
significantly improved thanks to use of appropriate toys. There is need for new generation of toys providing development
of motor, cognitive, and social skills. There is also need for more objective assessment of their positive influence
functional and cognitive achievements of children because current evidence remains incomplete. Mechatronic tools, such
as robots and artificial animals, should receive increased attention of scientists and clinicians due to improved
performance of children with autism spectrum disorders. Development of novel toy-related technologies can stimulate
new approaches applied in the area of diagnosis, intervention and care. This study aims at assessment how mechatronic
toys can be better incorporated into therapy of children with autism spectrum disorders - ASD.
2017-01-01T00:00:00ZStructural-Geometric Functionalization of the Additively Manufactured Prototype of Biomimetic Multispiked Connecting Ti-Alloy Scaffold for Entirely Noncemented Resurfacing Arthroplasty Endoprostheses
http://repozytorium.ukw.edu.pl//handle/item/4093
Structural-Geometric Functionalization of the Additively Manufactured Prototype of Biomimetic Multispiked Connecting Ti-Alloy Scaffold for Entirely Noncemented Resurfacing Arthroplasty Endoprostheses
Uklejewski, Ryszard; Winiecki, Mariusz; Rogala, Piotr; Patalas, Adam
The multispiked connecting scaffold (MSC-Scaffold) prototype, inspired by the biological system of anchorage of the articular
cartilage in the periarticular trabecular bone by means of subchondral bone interdigitations, is the essential innovation in
fixation of the bone in resurfacing arthroplasty (RA) endoprostheses. The biomimetic MSC‐Scaffold, due to its complex
geometric structure, can be manufactured only using additive technology, for example, selective laser melting (SLM). The
major purpose of this work is determination of constructional possibilities for the structural-geometric functionalization
of SLM‐manufactured MSC‐Scaffold prototype, compensating the reduced ability-due to the SLM technological limitations—to
accommodate the ingrowing bone filling the interspike space of the prototype, which is important for the prototype
bioengineering design. Confocal microscopy scanning of components of the SLM‐manufactured prototype of total hip
resurfacing arthroplasty (THRA) endoprosthesis with the MSC‐Scaffold was performed. It was followed by the geometric
measurements of a variety of specimens designed as the fragments of the MSC-Scaffold of both THRA endoprosthesis
components. The reduced ability to accommodate the ingrowing bone tissue in the SLM‐manufactured prototypes versus
that in the corresponding CAD models has been quantitatively determined. Obtained results enabled to establish a way of
compensatory structural‐geometric functionalization, allowing the MSC‐Scaffold adequate redesigning and manufacturing in
additive SLM technology.
2017-01-01T00:00:00ZSimulation of Diffusion Flows in Two-Phase Multilayered Stochastically Nonhomogeneous Bodies with Non-Uniform Distribution of Inclusions
http://repozytorium.ukw.edu.pl//handle/item/3781
Simulation of Diffusion Flows in Two-Phase Multilayered Stochastically Nonhomogeneous Bodies with Non-Uniform Distribution of Inclusions
Chaplya, Yevhen; Chernukha, Olha; Davydok, Anastasiia
Admixture diffusion flows are investigated in two-phase randomly nonhomogeneous multilayered strips with non-uniform distributions of inclusions. Cases where the most probable disposition of layered inclusions is located near the body boundary on which the mass source acts in the neighborhood of another boundary and in the middle of the body are considered. The initial-boundary value problem is formulated for the function of rand om mass flow under conditions of a constant flow on the upper surface and zero concentration of the admixture on the lower surface. Calculation formulae are obtained for the diffusion flow averaged over the ensemble of phase configurations in the particular cases of beta-distribution at zero and nonzero initial concentrations. The dependences of the averaged admixture flows on medium characteristics are established. It is shown that if the admixture diffusion coefficient in inclusions is greater than in the matrix, consolidation of inclusions in the middle of the body leads to an increasing diffusion flow. Simulation of the averaged diffusion flows of the admixture in the multilayered strip is performed for different model variants of a probable disposition of phases in the body and their comparative analysis is carried out.
2015-01-01T00:00:00ZMathematical Modeling of Random Diffusion Flows in Two-Phase Multilayered Stochastically Nonhomogeneous Bodies
http://repozytorium.ukw.edu.pl//handle/item/3780
Mathematical Modeling of Random Diffusion Flows in Two-Phase Multilayered Stochastically Nonhomogeneous Bodies
Chaplya, Yevhen; Chernukha, Olha; Davydok, Anastasiia
An approach for studying stochastical diffusion flows of admixture particles in bodies of multiphase randomly nonhomogeneous structures is proposed, according to which initial-boundary value problems of diffusion are formulated for flow functions and methods of solution construction are adapted for the formulated problems. By this approach the admixture diffusion flow is investigated in a two-phase multilayered strip for the uniform distribution of phases under conditions of constant flow on the upper surface and zero concentration of admixture on the lower surface. An integro-differential equation equivalent to the original initial-boundary value problem is constructed. Its solution is found in terms of the Neumann series. Calculation formulae are obtained for the diffusion flow averaged over the ensemble of phase configurations under both zero and constant nonzero initial concentrations. Software is developed, a dependence of averaged diffusion flows on the medium characteristics is studied and general regularities of this process are established.
2015-01-01T00:00:00Z