Reducing the confusion and clicks and its impact on learning

With the increased importance placed on first-year university units to transition, retain and engage new students, there is a need to carefully design the navigation within a unit of study. The importance of reducing confusion for new students and the cognitive load placed on them during their first experience of university learning may assist with retention. This paper presents a collaborative project between a first-year Unit Coordinator and Senior Learning Designer to redesign the navigation of a core communications unit in a Bachelor of Science (Nursing) degree. The purpose was to reduce the confusion over what was required of the students each week and to reduce the number of clicks and scrolls through the weekly content, allowing students to focus on the content itself

Integrative review : Factors impacting effective delegation practices by registered nurses to assistants in nursing

Aim To identify the evidence on factors that impact delegation practices by Registered Nurses to Assistants in Nursing in acute care hospitals. Design An integrative review. Data Sources Database searches were conducted between July 2011 and July 2021. Review Methods We used the 12-step approach by Kable and colleagues to document the search strategy. The (Whittemore & Knafl. 2005. Journal of Advanced Nursing, 52(5), 546–553) integrative review framework method was adopted and the methodological quality of the studies was assessed using Joanna Briggs critical appraisal instruments. Results Nine studies were included. Delegation between the Registered Nurse and the Assistant in Nursing is a complex but critical leadership skill which is impacted by the Registered Nurse's understanding of the Assistant in Nursing's role, scope of practice and job description. Newly qualified nurses lacked the necessary leadership skills to delegate. Further education on delegation is required in pre-registration studies and during nurses' careers to ensure Registered Nurses are equipped with the skills and knowledge to delegate effectively. Conclusion With increasing numbers of Assistants in Nursing working in the acute care environment, it is essential that Registered Nurses are equipped with the appropriate leadership skills to ensure safe delegation practice

Computational analysis of transport in three-dimensional heterogeneous materials: An OpenFOAM®-based simulation framework

© 2020, The Author(s). Porous and heterogeneous materials are found in many applications from composites, membranes, chemical reactors, and other engineered materials to biological matter and natural subsurface structures. In this work we propose an integrated approach to generate, study and upscale transport equations in random and periodic porous structures. The geometry generation is based on random algorithms or ballistic deposition. In particular, a new algorithm is proposed to generate random packings of ellipsoids with random orientation and tunable porosity and connectivity. The porous structure is then meshed using locally refined Cartesian-based or unstructured strategies. Transport equations are thus solved in a finite-volume formulation with quasi-periodic boundary conditions to simplify the upscaling problem by solving simple closure problems consistent with the classical theory of homogenisation for linear advection–diffusion–reaction operators. Existing simulation codes are extended with novel developments and integrated to produce a fully open-source simulation pipeline. A showcase of a few interesting three-dimensional applications of these computational approaches is then presented. Firstly, convergence properties and the transport and dispersion properties of a periodic arrangement of spheres are studied. Then, heat transfer problems are considered in a pipe with layers of deposited particles of different heights, and in heterogeneous anisotropic materials

Computational analysis of transport in three-dimensional heterogeneous materials: An OpenFOAM®-based simulation framework

Porous and heterogeneous materials are found in many applications from composites, membranes, chemical reactors, and other engineered materials to biological matter and natural subsurface structures. In this work we propose an integrated approach to generate, study and upscale transport equations in random and periodic porous structures. The geometry generation is based on random algorithms or ballistic deposition. In particular, a new algorithm is proposed to generate random packings of ellipsoids with random orientation and tunable porosity and connectivity. The porous structure is then meshed using locally refined Cartesian-based or unstructured strategies. Transport equations are thus solved in a finite-volume formulation with quasi-periodic boundary conditions to simplify the upscaling problem by solving simple closure problems consistent with the classical theory of homogenisation for linear advection–diffusion–reaction operators. Existing simulation codes are extended with novel developments and integrated to produce a fully open-source simulation pipeline. A showcase of a few interesting three-dimensional applications of these computational approaches is then presented. Firstly, convergence properties and the transport and dispersion properties of a periodic arrangement of spheres are studied. Then, heat transfer problems are considered in a pipe with layers of deposited particles of different heights, and in heterogeneous anisotropic materials

The role of recirculation zones on non-Fickian transport phenomena in 3D porous media

In groundwater engineering, remediation techniques based on the injection of nano/particles have enjoined a particular success. Pore-scale numerical simulations are a powerful tool to study transport of solutes and colloidal suspensions in porous media, and are used to derive constitutive laws tune macro-scale models. In the Eulerian framework, the influence of the pore space geometry on transport phenomena was investigated thanks to computational fluid dynamics pore-scale simulations. Three different 3D periodic arrangements of spherical grains were used, namely face-centered-cubic (FCC), body-centered-cubic (BCC), and sphere-in-cube (SIC) packings, [1]. In Stokes regime, the transport of a conservative tracer and of particles undergoing instantaneous heterogeneous reaction were both investigated and the resulting outflow concentration (breakthrough curves) were analyzed: even if the porous media have the very same grains shape and size and the same porosity, the breakthrough curves present noteworthy differences, such as an enhanced tailing and early arrival times. The anomalous (non-Fickian) transport observed was indeed correlated with the peculiarities of the pore-space and to the presence of recirculation zones above all. The recirculation zones were detected at low Reynolds numbers and various methods, first of all a streaklines visualization, were adopted to describe qualitatively and quantitatively such zones. The analysis of the angle formed by velocity and vorticity vectors proved to be particularly effective in the detection of recirculation zones. At last, simulating the transport of particles undergoing instantaneous heterogeneous reactions, the role played by the medium structure is evident also evaluating the deposition efficiency coefficient, as its behavior clearly depends on the grains packing adopted. After more than fifty years, the study of anomalous transport in porous media still offers a breeding ground for researches in many different fields. Since in the groundwater framework the determination of this macro-scale parameter is a key factor to design effective remediation techniques, this work tries to exploit the potentiality of computational fluid dynamics to tackle the problem from the pore-scale, exploiting a practical approach

Integrative review: Factors impacting effective delegation practices by registered nurses to assistants in nursing

Aim To identify the evidence on factors that impact delegation practices by Registered Nurses to Assistants in Nursing in acute care hospitals. Design An integrative review. Data Sources Database searches were conducted between July 2011 and July 2021. Review Methods We used the 12-step approach by Kable and colleagues to document the search strategy. The (Whittemore & Knafl. 2005. Journal of Advanced Nursing, 52(5), 546–553) integrative review framework method was adopted and the methodological quality of the studies was assessed using Joanna Briggs critical appraisal instruments. Results Nine studies were included. Delegation between the Registered Nurse and the Assistant in Nursing is a complex but critical leadership skill which is impacted by the Registered Nurse\u27s understanding of the Assistant in Nursing\u27s role, scope of practice and job description. Newly qualified nurses lacked the necessary leadership skills to delegate. Further education on delegation is required in pre-registration studies and during nurses\u27 careers to ensure Registered Nurses are equipped with the skills and knowledge to delegate effectively. Conclusion With increasing numbers of Assistants in Nursing working in the acute care environment, it is essential that Registered Nurses are equipped with the appropriate leadership skills to ensure safe delegation practice

From micro-scale 3D simulations to macro-scale model of periodic porous media

In environmental engineering, the transport of colloidal suspensions in porous media is studied to understand the fate of potentially harmful nano-particles and to design new remediation technologies. In this perspective, averaging techniques applied to micro-scale numerical simulations are a powerful tool to extrapolate accurate macro-scale models. Choosing two simplified packing configurations of soil grains and starting from a single elementary cell (module), it is possible to take advantage of the periodicity of the structures to reduce the computation costs of full 3D simulations. Steady-state flow simulations for incompressible fluid in laminar regime are implemented. Transport simulations are based on the pore-scale advection-diffusion equation, that can be enriched introducing also the Stokes velocity (to consider the gravity effect) and the interception mechanism. Simulations are carried on a domain composed of several elementary modules, that serve as control volumes in a finite volume method for the macro-scale method. The periodicity of the medium involves the periodicity of the flow field and this will be of great importance during the up-scaling procedure, allowing relevant simplifications. Micro-scale numerical data are treated in order to compute the mean concentration (volume and area averages) and fluxes on each module. The simulation results are used to compare the micro-scale averaged equation to the integral form of the macroscopic one, making a distinction between those terms that could be computed exactly and those for which a closure in needed. Of particular interest it is the investigation of the origin of macro-scale terms such as the dispersion and tortuosity, trying to describe them with micro-scale known quantities. Traditionally, to study the colloidal transport many simplifications are introduced, such those concerning ultra-simplified geometry that usually account for a single collector. Gradual removal of such hypothesis leads to a detailed description of colloidal transport mechanisms. Starting from nearly realistic 3D geometries, the ultimate purpose of this work is that of develop an improved understanding of the fate of colloidal particles through, for example, an accurate description of the deposition efficiency, in order design efficient remediation techniques