Spatial Structures of Fibrillar Proteins

The protein molecules are considerate in the space of the highest dimension with a change in dimension with demand at the conformation of the molecules. It was shown that the widespread quasi-plane model of the Pouling protein structure do not reflect and even contradict the spatial structures of the protein in various conformations. It was found that the linear structures and folded structures of the protein in space of the highest dimension have translational symmetry. The elementary elements of protein translational symmetry were determined, their dimensions were calculated (9 for the linear structures and 23 for folded structures).

Research on Road Roughness Based on NARX Neural Network

In order to solve the problem of road roughness identification, a study on the nonlinear autoregressive with exogenous inputs (NARX) neural network identification method was carried out in the paper. Firstly, a 7-DOF plane model of vehicle vibration system was established to obtain the vertical acceleration and elevation acceleration of the body, which were set as ideal input samples for the neural network. Then, based on the plane model, with common speed, the road roughness was solved as the ideal output sample of the NARX neural network, and the road roughness of B-level and C-level was identified. The results show that the proposed method has ideal identification accuracy and strong antinoise ability. The relative error of C-level road roughness is larger than that of B-level road roughness. The identified road roughness can provide a theoretical basis for analyzing the dynamic response of expressway roads.

Construction with ruler and compass, van Hiele model for geometry thinking and Project-based learning

We describe how problems of geometric construction using straightedge and compass can be introduced to students through project-based learning. We discuss how these problems can be extended to the upper half-plane model. Furthermore, we discuss the use of these problems to assess advanced levels in van Hiele model for geometry thinking.

A Framework for Measuring Situation Awareness in Cyberspace Operations

Critical human factors challenges, including some that are unique to the cyber domain, demand technological solutions to aid operators performing cyber missions. One performance component of particular interest is measuring the situation awareness (SA) of human operators monitoring cyber events (herein called cyber SA). During a literature review, this paper’s authors found several attempts to develop and test measures of cyber SA, but none of the papers presented a framework integrating a formal definition of SA into the cyber domain. By crossing the US Army’s five-plane model of cyberspace operations with Endsley’s three-level model of SA, a formal framework is herein proposed. Using this framework, researchers can develop probe questions suitable for any cyber mission, and their results can be used to measure cyber SA. A sample application of this framework is provided, and future directions are proposed.

Design, analysis & testing of an enhanced radial-axial hybrid compliant deburring tool

This thesis will discuss the development of a radial actuator incorporated into a deburring tool. Gas turbine engine deburring is complex; this requires the tooltip to maintain active compliance in three degrees of freedom. This can be achieved through the use of a rotating action plane so that only radial and axial actuation is required. A proposed enhanced radial actuator has been made that utilizes the action plane model and fulfill the requirements for precision deburring of gas turbine engine components. The enhanced radial actuator was designed using four silicone rubber pneumatic diaphragms. The diaphragms were modelled using a finite element method and applying an Arruda-Boyce material model to the mesh. The stiffness behaviour was analyzed and compared to data from previous research completed on radial actuation within an action plane. The stiffness behaviour was determined to be superior and significantly improved as it could be reliably predicted.

Design, analysis & testing of an enhanced radial-axial hybrid compliant deburring tool

This thesis will discuss the development of a radial actuator incorporated into a deburring tool. Gas turbine engine deburring is complex; this requires the tooltip to maintain active compliance in three degrees of freedom. This can be achieved through the use of a rotating action plane so that only radial and axial actuation is required. A proposed enhanced radial actuator has been made that utilizes the action plane model and fulfill the requirements for precision deburring of gas turbine engine components. The enhanced radial actuator was designed using four silicone rubber pneumatic diaphragms. The diaphragms were modelled using a finite element method and applying an Arruda-Boyce material model to the mesh. The stiffness behaviour was analyzed and compared to data from previous research completed on radial actuation within an action plane. The stiffness behaviour was determined to be superior and significantly improved as it could be reliably predicted.