scholarly journals Fabricación digital de maquetas para la mejora de la interpretación cartográfica y el fomento de la competencia creativa = Digital manufacturing of 3D DTM models to enhance cartographic interpretation & creative competence

2017 ◽  
Vol 1 (1) ◽  
pp. 11
Author(s):  
Dámari Melían Díaz ◽  
Carlos Carbonell Carrera ◽  
José Luis Saorín Pérez ◽  
Jorge De la Torre Cantero ◽  
Norena Martín Dorta
Keyword(s):  
Low Cost ◽  
Three Dimensional ◽  
Digital Manufacturing ◽  
Master's Students ◽  
Terrain Models ◽  
Preliminary Validation ◽  
Before And After ◽  
Manufacturing Technologies ◽  
The University ◽  
Academic Year

ResumenEn educación superior, para las titulaciones de ingeniería y arquitectura es precisa la adquisición y desarrollo de competencias como la creatividad y la visión espacial. La competencia espacial se puede desarrollar mediante la realización de ejercicios y la creatividad mejora, si el diseño de los ejercicios permite múltiples soluciones. La comprensión del relieve topográfico es necesaria para la integración de proyectos de arquitectura e ingeniería en el entorno. Sin embargo, en la formación universitaria se han detectado carencias para la interpretación de las formas del relieve. Las maquetas de terreno, pueden ayudar a suplir esta carencia. La aparición de tecnologías de fabricación digital de bajo coste permiten la creación de maquetas de terreno y su incorporación en la docencia reglada. En este artículo se presentan los resultados de dos experiencias. En la primera, llevada a cabo durante el curso 2015-16 con 33 alumnos universitarios, se realizan maquetas topográficas utilizando secciones apiladas, con el objetivo de mejorar la interpretación tridimensional de las formas del terreno. La segunda parte de la experiencia, llevada a cabo durante el curso 2016-17 se realiza con alumnos de Máster. Se trata de una validación preliminar, con pocos alumnos, en la que se pretende incorporar aspectos creativos a la realización de maquetas de terrenos. Para medir la variación de la competencia creativa en los alumnos se utiliza el Test de Abreacción de la Creatividad (TAEC), antes y después de la experiencia.AbstractIn higher education, engineering and architecture degrees require the acquisition and development of skills such as creativity and spatial ability. Space competence can be developed by performing exercises and the creativity improves, if the design of the exercises allows multiple solutions. The understanding of topographic relief is necessary for the integration of architectural and engineering projects in the environment. However, in the university context deficiencies have been detected for the interpretation of the relief forms. Land models can help to fill this gap. The emergence of low cost digital manufacturing technologies allows the creation of terrain models and their incorporation for teaching. This article presents the results of two experiences. In the first one, carried out during the 2015-16 academic year with 33 university students, topographic models are made using stacked sections, with the aim of improving the three-dimensional interpretation of the terrain forms. The second part of the experience, performed during the 2016-17 course is carried out with Master's students. This is a preliminary validation, with few students, which seeks to incorporate creative aspects to the realization of land models. To measure the variation of creative competence in students, the Creativity Abreaction Test (TAEC) is used, before and after the experience.

scholarly journals Ceramic Workshop Adapted with 3D Technologies to Improve the Self-Esteem of People with Disabilities

2020 ◽  
Vol 12 (21) ◽  
pp. 9063
Author(s):  
Alejandro Bonnet de León ◽  
Cecile Meier ◽  
Jose Luis Saorin
Keyword(s):  
Simple Technique ◽  
Low Cost ◽  
Self Esteem ◽  
Digital Tools ◽  
Digital Manufacturing ◽  
Observation Data ◽  
3D Scanner ◽  
3D Printed ◽  
People With Intellectual Disabilities ◽  
Manufacturing Technologies

This paper describes a process to adapt tools in an artistic ceramic workshop in which custom molds are created using low-cost digital manufacturing technologies. The digitalization of busts by a 3D scanner and their transformation into 3D printed molds is a simple technique that only requires basic digital tools. These molds were used in the artistic ceramic workshop of the Psychopedagogical Center of the Order of San Juan de Dios in Tenerife, where the authors worked with people with intellectual disabilities to make ceramic pieces. These people, in most cases, do not have the necessary skills for detail modeling; however, with the help of digital manufacturing technologies, they can produce molds of their own faces and create personalized figures autonomously. In this way, they increase their self-esteem and autonomy and discover new possibilities for making products; as a result, they feel fulfilled and confirm that they can be part of the creation process. To obtain an evaluation of the activity, a qualitative study was carried out, and observation data were collected. The attitudes of the users were compared with observations made during a similar activity without using molds or technologies. It was observed that the attitude of the participants significantly improved when they obtained more satisfactory results with the use of molds.

scholarly journals Four-Dimensional Map Reconstruction for Urban Progress Analysis

2020 ◽  
Vol 55 (2) ◽  
Author(s):  
Zahraa E. Hussein ◽  
Marwa M. Bori ◽  
Layla K. Abbas
Keyword(s):  
Spatial Information ◽  
Low Cost ◽  
Three Dimensional ◽  
Water Area ◽  
Google Earth ◽  
Geographical Information ◽  
Data Set ◽  
Important Indicator ◽  
3 Dimensional ◽  
The University

The article describes a simple and low cost methodology of four-dimensional map creation, based on the main elements of the urban world like such as green ground, buildings, soil, water area and others, which makes it possible to detect the urban progress during a certain period using an open source data of Google Earth and geographical information system. This implies that a study of changes in urban elementrequire an integration of spatial information and corresponding real time, which is referred to as the four-dimensional map. Accordingly, the fourth dimensional (time) was added to the three dimensional spatial information (3 dimensional) study area signifies by the University of Baghdad, Aljadrya Campus. Regarding the article, the study area’s urban progress was considered for Google Earth’s available period of the data set that started from 2002 to 2019 at each of 2002, 2005, 2010 in addition to 2019 before being updated from the field observation. The main goal of this article is to provide an important indicator that can be used to determine the nature of current growth and forecast it in the future. Furthermore, it can be used for solving the problems of negative urban progress, which is what most developing countries are experiencing. Findings show significant changes in the main objects of the study area are represented by increasing each of buildings, green grounds, play grounds by about 40.9%, 65.4% and 30.2% respectively, which are offset by decrease insoil grounds of nearly 20.8%.

scholarly journals Van Tomb Raider naar de toekomst: de ontwikkeling van een archeologische tentoonstelling

Paleo-aktueel ◽  
2021 ◽  
pp. 1-7
Author(s):  
Anne Ponten
Keyword(s):  
Learning Experience ◽  
Public Outreach ◽  
Master's Students ◽  
First Semester ◽  
The Past ◽  
The Future ◽  
University Museum ◽  
The University ◽  
Academic Year ◽  
The Way

From Tomb Raider to the future. The development of an archaeological exhibition. During the first semester of the academic year 2019/2020, master’s students of the Groningen Institute of Archaeology (GIA) of the University of Groningen collaborated with staff of the University Museum to create the exhibition DIG IT ALL, showcasing research of the GIA. This contribution is based on an interview the author had with Arjen Dijkstra, head of the University Museum, in which Dijkstra reflected on the cooperation between the archaeology students and the museum. According to Arjen, the collaboration was a complex but rewarding project, even if some guidance was initially needed to get everyone on the same page. All in all, the project resulted in a valuable learning experience for everyone, especially the students, and, according to Dijkstra, it revealed some unique features of the archaeological profession, for instance, the way archaeologists interact with human remains and, more generally, the way they view the past. Collaborations with scientists are never perfect, according to Dijkstra, and the museum had indeed experienced less fruitful collaborations than the current one. Scientists tend to have difficulty in adapting to the specific demands of a museum when presenting research. Fortunately, this was not a problem with the DIG IT ALL project. Dijkstra highlighted that the archaeologists had already put a lot of effort into public outreach, and he encourages the GIA to keep doing this in the future.

scholarly journals A Performance Prediction Method for Pumps as Turbines (PAT) Using a CFD Modeling Approach

2016 ◽  
Author(s):  
Emma Frosina ◽  
Dario Buono ◽  
Adolfo Senatore
Keyword(s):  
Test Bench ◽  
Low Cost ◽  
Three Dimensional ◽  
Prediction Method ◽  
Cfd Modeling ◽  
Centrifugal Pumps ◽  
Software Model ◽  
Pumping Mode ◽  
Using Data ◽  
The University

Small and micro hydropower represents an attractive solution for electricity generation, with low cost and low environmental impact. The pump-as-turbine (PAT) approach has promise in this application owing to its low purchase and maintenance costs. In this paper, a new method to predict the inverse characteristic of industrial centrifugal pumps is presented. This method is based on results of simulations performed with commercial three-dimensional CFD software. Model results have been first validated in pumping mode using data supplied by pump manufacturers. Then, results have been compared to experimental data for a pump running in reverse condition. Experimentation has been performed on a dedicated test bench installed in the Department of Civil Construction and Environmental Engineering of the University of Naples Federico II. Three different pumps, with different specific speeds, have been analyzed. Using the model results, the inverse characteristic and the best efficiency point have been evaluated. Finally, results of this methodology have been compared to prediction methods available in the literature.

scholarly journals Customized Fabrication Approach for Hypertrophic Scar Treatment: 3D Printed Fabric Silicone Composite

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Lung Chow ◽  
Kit-Lun Yick ◽  
Mei-Ying Kwan ◽  
Chun-Fai Yuen ◽  
Sun-Pui Ng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Three Dimensional ◽  
Adhesive Force ◽  
Digital Manufacturing ◽  
Pressure Therapy ◽  
Remarkable Improvement ◽  
Print Materials ◽  
3D Printed ◽  
Direct Digital Manufacturing ◽  
Manufacturing Technologies

Hypertrophic scars (HS) are considered to be the greatest unmet challenge in wound and burn rehabilitation. The most common treatment for HS is pressure therapy, but pressure garments may not be able to exert adequate pressure onto HS due to the complexity of the human body. However, the development of three-dimensional (3D) scanning and direct digital manufacturing technologies has facilitated the customized placement of additively manufactured silicone gel onto fabric as a component of the pressure therapy garment. This study provides an introduction on a novel and customized fabrication approach to treat HS and discusses the mechanical properties of 3D printed fabric reinforced with a silicone composite. For further demonstration of the suggested HS therapy with customized silicone insert, silicone inserts for the finger webs and HS were additively manufactured onto the fabric. Through the pressure evaluation by Pliance X system, it proved that silicone insert increases the pressure exerted to the HS. Moreover, the mechanical properties of the additively manufactured fabric silicone composites were characterized. The findings suggest that as compared with single viscosity print materials, the adhesive force of the additively manufactured silicone and fabric showed a remarkable improvement of 600% when print materials with different viscosities were applied onto elevated fabric

scholarly journals A novel concept for low-cost non-electronic detection of overloading in the foot during activities of daily living

2021 ◽  
Vol 8 (6) ◽  
pp. 202035
Author(s):  
Panagiotis E. Chatzistergos ◽  
Nachiappan Chockalingam
Keyword(s):  
Mechanical Behaviour ◽  
Daily Living ◽  
Low Cost ◽  
Three Dimensional ◽  
Patient Specific ◽  
Thin Wall ◽  
Three Dimensional Printing ◽  
Wall Structures ◽  
Before And After ◽  
Novel Concept

Identifying areas in the sole of the foot which are routinely overloaded during daily living is extremely important for the management of the diabetic foot. This work showcases the feasibility of reliably detecting overloading using a low-cost non-electronic technique. This technique uses thin-wall structures that change their properties differently when they are repeatedly loaded above or below a tuneable threshold. Flexible hexagonal thin-wall structures were produced using three-dimensional printing, and their mechanical behaviour was assessed before and after repetitive loading at different magnitudes. These structures had an elastic mechanical behaviour until a critical pressure ( P crit = 252 kPa ± 17 kPa) beyond which they buckled. Assessing changes in stiffness after simulated use enabled the accurate detection of whether a sample was loaded above or below P crit (sensitivity = 100%, specificity = 100%), with the overloaded samples becoming significantly softer. No specific P crit value was targeted in this study. However, finite-element modelling showed that P crit can be easily raised or lowered, through simple geometrical modifications, to become aligned with established thresholds for overloading (e.g. 200 kPa) or to assess overloading thresholds on a patient-specific basis. Although further research is needed, the results of this study indicate that clinically relevant overloading could indeed be reliably detected without the use of complex electronic in-shoe sensors.

Perspectives on the evolution of a fabrication laboratory in an emerging country: a comparative lexicometric study of European FabLabs

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Helmi Ben Rejeb ◽  
Benoit Roussel
Keyword(s):  
Correspondence Analysis ◽  
Developed Countries ◽  
Digital Manufacturing ◽  
Strongly Correlated ◽  
Content Type ◽  
Five Factors ◽  
Emerging Country ◽  
Before And After ◽  
Current Context ◽  
Manufacturing Technologies

PurposeThe purpose of this paper is to help in the establishment of the first fabrication laboratory (FabLab) in Tunisia. The FabLab movement offers many interesting opportunities through value creation, innovation, training and access to digital manufacturing technologies. A newly created FabLab should be well-positioned in terms of business model, purpose and management. The aim of this paper is to conduct a comparative analysis of FabLabs in developed countries (mainly in France and Luxembourg) and to provide recommendations on the possible development of a FabLab in Tunisia (FabLabENIT).Design/methodology/approachTwelve FabLabs were visited and experts from the makers movement were interviewed. Data from the visits and interviews were analysed using lexicometric tools. This methodology is based on three main steps: first, the identification and selection of panel of studied FabLabs interviews; second transcribing and coding for IRaMuTeQ software; and third, correspondence analysis.FindingsThe correspondence analysis determined five main factors of analysis that were interpreted using the most correlated words. The analysis of the correlation of the FabLabs and these five factors showed that FabLabENIT was strongly correlated with the third factor (interpreted as the organisation and structure factor). Recommendations for the purpose, local impact and methods were derived using the position of FabLabENIT in relation to the other factors.Practical implicationsThis study highlighted five main topics that characterise FabLabs in developing countries before and after their creation. A second practical contribution of this paper is that it provides a framework for FabLab managers and founders to anticipate possible trajectories of evolution for their organisations, especially in an emerging country. Another contribution, both practical and methodological, is the demonstration of the use of textual interview analysis tools (mainly correspondence analysis) to determine the main practices and characteristics of a creative organisation, such as a FabLab.Originality/valueOne original feature of this paper is the topic of the study, especially in the current context of the COVID-19 outbreak, in which the FabLab movement provided interesting solutions that were designed and manufactured using digital manufacturing technologies. A second originality resides in the use of lexicometric techniques to analyse the information that was discussed during the interviews.

Spectraplot: A PC-based spectrum translation and display program

1988 ◽  
Vol 46 ◽  
pp. 918-919
Author(s):  
H. O. Colijn
Keyword(s):  
Low Cost ◽  
Transfer Program ◽  
File Transfer ◽  
Transfer Data ◽  
Error Checking ◽  
Data Files ◽  
The University

Many labs today wish to transfer data between their EDS systems and their existing PCs and minicomputers. Our lab has implemented SpectraPlot, a low- cost PC-based system to allow offline examination and plotting of spectra. We adopted this system in order to make more efficient use of our microscopes and EDS consoles, to provide hardcopy output for an older EDS system, and to allow students to access their data after leaving the university.As shown in Fig. 1, we have three EDS systems (one of which is located in another building) which can store data on 8 inch RT-11 floppy disks. We transfer data from these systems to a DEC MINC computer using “SneakerNet”, which consists of putting on a pair of sneakers and running down the hall. We then use the Hermit file transfer program to download the data files with error checking from the MINC to the PC.

Fabrication of 3D Temperature Sensor Using Magnetostrictive Inkjet Printhead

2020 ◽  
Vol 64 (5) ◽  
pp. 50405-1-50405-5
Author(s):  
Young-Woo Park ◽  
Myounggyu Noh
Keyword(s):  
Flexible Electronics ◽  
Inkjet Printing ◽  
Temperature Sensor ◽  
Computer Aided Design ◽  
Low Cost ◽  
Three Dimensional ◽  
Drop On Demand ◽  
Aided Design ◽  
Nanoparticle Ink ◽  
Inkjet Printhead

Abstract Recently, the three-dimensional (3D) printing technique has attracted much attention for creating objects of arbitrary shape and manufacturing. For the first time, in this work, we present the fabrication of an inkjet printed low-cost 3D temperature sensor on a 3D-shaped thermoplastic substrate suitable for packaging, flexible electronics, and other printed applications. The design, fabrication, and testing of a 3D printed temperature sensor are presented. The sensor pattern is designed using a computer-aided design program and fabricated by drop-on-demand inkjet printing using a magnetostrictive inkjet printhead at room temperature. The sensor pattern is printed using commercially available conductive silver nanoparticle ink. A moving speed of 90 mm/min is chosen to print the sensor pattern. The inkjet printed temperature sensor is demonstrated, and it is characterized by good electrical properties, exhibiting good sensitivity and linearity. The results indicate that 3D inkjet printing technology may have great potential for applications in sensor fabrication.

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