scholarly journals The Conceptual Design of a Smart Wrist Orthosis and Functional Performance - Project Overview

2021 ◽  
Vol 15 (3) ◽  
pp. 387-391
Author(s):  
Zoran Domitran ◽  
Robert Mašović ◽  
Jure Serdar ◽  
Mislav Jelić
Keyword(s):  
Conceptual Design ◽  
Functional Performance ◽  
Heart Function ◽  
Recovery Period ◽  
3D Models ◽  
Additive Technologies ◽  
Bottom Part ◽  
Minor Injuries ◽  
Performance Project ◽  
Modular Extension

The idea of the project was to find a conceptual design of a multi-functional smart orthosis for wrist fixation. The application of additive technologies presents the potential in designing a customised orthosis for every patient individually. By using pre-generated 3d models of various hand shapes it is possible to prepare models for several shapes and sizes of forearms and hands. The conceptual design provides a possible solution for a two-part orthosis bound around the forearm and a modular extension to stabilize the wrist without additional compression. The multi-functionality occurs with the development of a small pre-defined electronic plate located in the bottom part of the orthosis. The temperature and heart rate are constantly monitored and displayed wirelessly on a smartphone. The target group are the patients active in sports or patients with minor injuries. Moreover, the orthosis can be used for body temperature and heart function monitoring during recovery period.

scholarly journals Headgear for Weakening Impact from Concussion in Rugby Games: Design and Development

2019 ◽  
Vol 8 (4) ◽  
pp. 2020-2023
Keyword(s):  
Brain Injury ◽  
Head Injury ◽  
Conceptual Design ◽  
Selection Method ◽  
Core Material ◽  
Protective Device ◽  
House Of Quality ◽  
Minor Injuries ◽  
Morphological Chart ◽  
Rugby Players

Rugby headgear is one of the important protective tool for protecting rugby players from head injury. However, there are still some professional or amateur rugby players who are not concerned about the use of headgear as a protective device. Rugby headgear has been created to protect the heads of rugby players in particular to avoid minor injuries such as wounds because rugby is a sport that requires strong physical movements and abusive techniques. At the same time, the ability of rugby headgear to protect against the occurrence of brain injury is questionable. Therefore, the objective of this project is to propose a conceptual design of rugby headgear by taking into account factors to prevent or reduce the potential of brain injury. The methodology used was a survey of professional and amateur rugby players to determine the need for the design of the headgear, conceptual map for the idea of development, House of Quality (HoQ) in assessing the needs of rugby players, Morphological Chart in determining the concept, Pugh's Selection Method in finding the most appropriate design. Headgear that is round and cover most of the heads has been selected as a conceptual design with sorbothane as core material. Valco strap was used as fastener and sponge in the head for the comfort to the player’s head

Using laser scanning for non-destructive quality control of parts manufactured using 3D printing technology

2021 ◽  
pp. 20-28
Author(s):  
A.P. Voroshilin ◽  
◽  
V.N. Rozhkov ◽  
P.A. Ukhov ◽  
◽  
...  
Keyword(s):  
Quality Control ◽  
3D Printing ◽  
Laser Scanning ◽  
Ventilation System ◽  
Implementation Process ◽  
3D Models ◽  
Additive Technologies ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Non Destructive

The article identifies promising areas of application of additive technologies in the production of parts and elements of aviation equipment (AT), the main tasks that need to be solved when implementing them (during the implementation process). The features of the application of laser scanning for non-destructive quality control of aircraft parts manufactured using modern additive technologies are considered. The possibility of controlling deviations in the shape and size of parts of aircraft manufactured using 3D printing technology from their 3D models by stationary and portable scanners (for example, an adapter for the air conditioning and ventilation system of an aircraft) is shown.(is represented) The article presents the main operations of the technological process of laser scanning using modern technical and software tools, the process of laser scanning of the AT part using the FARO Arm mobile CMM is implemented.

Fetal Habituation

1996 ◽  
Vol 8 (2) ◽  
pp. 109-123 ◽  
Author(s):  
Peter G Hepper ◽  
Leo R Leader
Keyword(s):  
Nervous System ◽  
Functional Outcome ◽  
Functional Performance ◽  
Heart Function ◽  
Genetic Constitution ◽  
Cortical Function ◽  
Fetal Health ◽  
The Central Nervous System ◽  
Fetal Wellbeing ◽  
The Individual

One aim of obstetric practice is to ensure the wellbeing of the fetus. This is by no means an easy task and recent years have seen the development of a variety of tests, with varying degrees of success, to evaluate fetal health.Fetal wellbeing may be assessed at a variety of levels: genetic/cellular, physical/structural or functional. Ideally the evaluation of fetal health should provide information about the functional outcome of any particular condition, especially the performance of the central nervous system. Current tests may not do this. Thus, whilst tests of the fetal chromosomal or genetic constitution may determine the presence of particular genetic/chromosomal conditions, they may not predict functional outcome especially the functioning of the cerebral cortices, the ultimate arbiter of excellence in man. For example, Down's syndrome may be accurately diagnosed by analysis of fetal cells to detect the presence of Trisomy 21 but this in itself provides little information on the subsequent functional performance of the individual. The development of tests of fetal heart function such as antenatal cardiotocography have provided a means of assessing cardiac function and, to a certain extent, the functioning of parts of the autonomic nervous system. However such tests can only indirectly assess cortical function.

Application of 3D Scanning for Documentation and Creation of Physical Copies of Estampages

2019 ◽  
Vol 40 (1) ◽  
pp. 1-14
Author(s):  
Alexander Alexeevich Galushkin ◽  
Sofia Lvovna Gonobobleva ◽  
Vadim Alexandrovich Parfenov ◽  
Anton Alexandrovich Zhuravlev
Keyword(s):  
Experimental Research ◽  
3D Model ◽  
Structured Light ◽  
3D Models ◽  
3D Scanning ◽  
Additive Technologies ◽  
Laser Printer ◽  
3D Scanner ◽  
Combined Use ◽  
3D Printers

Abstract This article discusses the creation of a 3D archive and physical copies of paper reliefs (estamages). A matrix of the estampage is fabricated by the combined use of 3D scanning technology and additive technologies which can then be used for the documentation and conservation of the original estampage. In order to digitize the relief, an optical 3D scanner based on structured light was used and the processing of the 3D model is discussed in detail. Scanning data is uploaded into the microprocessor of a 3D laser printer using stereolithography technology which then creates a conservation matrix. The accuracy of relief reproduction is assessed by comparing its 3D model with 3D models of replicas obtained with the help of 3D printers. The experimental research showed that it is possible to create 3D archives and reproduction of reliefs. This approach is fundamentally new in the practice of museums and archives.

Determining Probability of Importance of Features in a Sketch

2017 ◽  
Vol 3 (4) ◽  
Author(s):  
Ricardo Cruz-Lozano ◽  
Fisseha M. Alemayehu ◽  
Stephen Ekwaro-Osire ◽  
Haileyesus B. Endeshaw
Keyword(s):  
Conceptual Design ◽  
Shape Matching ◽  
Three Dimensional ◽  
3D Models ◽  
User Preferences ◽  
Design Stage ◽  
Limited Experience ◽  
Expert Input

Sketches can be categorized as personal, shared, persuasive, and handover sketches. Depending on each category, their level of ambiguity also varies. The applications of sketches include conceptual design, eliciting user preferences, shape retrieval, and sketch-based modeling (SBM). There is a need for quantification of uncertainty in sketches in mapping of sketches to three-dimensional (3D) models in sketch-based modeling, in eliciting user preferences, and in tuning the level of uncertainty in sketches at the conceptual design stage. This paper investigates the role of probability of importance in quantifying the level of uncertainty in sketches by raising the following three research questions: How are the features in a sketch ranked? What is the probability of importance of features in a sketch? What is the level of uncertainty in a sketch? This paper presents an improved framework for uncertainty quantification in sketches. The framework is capable of identifying and ranking the features in the sketch, determining their probability of importance, and finally quantifying the level of uncertainty in the sketch. Ranking the features of a sketch is performed by a hierarchical approach, whereas probability of importance is determined by assessing the probability of likeliness using a shape matching approach and a probability transformation. Quantification of uncertainty is accomplished by using the principle of normalization of entropy. A case study of a bicycle sketch is used to demonstrate that the framework eliminates the need of expert input in assessment of uncertainty in sketches and, hence, can be used by design practitioners with limited experience.

Innovative Conceptual Design

2001 ◽  
Author(s):  
Ehud Kroll ◽  
Sridhar S. Condoor ◽  
David G. Jansson
Keyword(s):  
Conceptual Design

The Effect of Exercise and Distraction on Blood Pressure Recovery Following an Anger-Provoking Stressor in Normotensive Young Adults

2015 ◽  
Vol 29 (2) ◽  
pp. 45-54 ◽  
Author(s):  
Faye S. Routledge ◽  
Judith A. McFetridge-Durdle ◽  
Marilyn Macdonald ◽  
Lynn Breau ◽  
Tavis Campbell
Keyword(s):  
Blood Pressure ◽  
Cardiovascular Health ◽  
Exercise Intervention ◽  
Recovery Period ◽  
Intervention Group ◽  
Exercise Group ◽  
State Anger ◽  
Increased Risk ◽  
Anger Reactivity ◽  
Quiet Sitting

Ruminating about a prior anger provoking event is found to elevate blood pressure (BP) and delay BP recovery. Delayed BP recovery may be associated with increased risk of hypertension. Interventions that improve BP recovery may be beneficial for cardiovascular health. The purposes of this study were to evaluate the influence of rumination and anger on BP reactivity and recovery, to compare the effect of an exercise intervention or distraction intervention on BP recovery and to explore if exercise improved BP recovery by distracting participants from stressor-related rumination and anger. Healthy, normotensive participants (n = 79, mean age 22.2 ± 4.0 years) underwent an anger-recall interview stressor task, 3 min of exercise (walking), distraction (reading) or no-intervention (quiet sitting) and a 15 min recovery period. State anger reactivity was associated with Δ diastolic (D) BP reactivity and approached significance with Δ systolic (S) BP reactivity. Trait rumination was associated with greater SBP during recovery. Δ SBP recovery did not differ between the exercise, distraction and no-intervention groups. Although there were no differences in Δ DBP recovery between the exercise and no-intervention groups, distraction improved Δ DBP recovery compared to the exercise intervention but not the no-intervention. The proportion of anger-related thoughts (state rumination) in the exercise group did not differ from the distraction or no-intervention groups. However, a smaller proportion of participants in the distraction intervention reported an anger-related thought during recovery compared to the no-intervention group with 76% of their thoughts relating to the provided distraction. Overall, post-stressor exercise was not found to improve BP recovery while reading was effective at distracting individuals from angry thoughts (state rumination) but had no effect on BP compared to no-intervention.

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