111 research outputs found
Open source hardware based sensor platform suitable for human gait identification
Most initiatives about embedded sensing capabilities in computational systems lead to de-
vise an ad hoc sensor platform, usually poorly reusable, as a first stage to prepare a data
corpus or production prototype. In this paper, an open source hardware platform for sensing is described. This platform was intended to be used in data acquisition for gait identification, and is designed in a way general enough so many other projects could reuse the design to accelerate prototyping. The platform is based on popular open source hardware and software like Arduino and Raspberry Pi using well known languages and libraries. Some experimental results about the throughput of the overall system are reported showing the feasibility of acquiring data from up to 6 sensors with a sampling frequency no less than 118 Hz
Is Open Science the Same as Open Source Science?
How open source hardware and software can help to level up open science into open research when used for both methods and tools in the research activities
Identifying users from the interaction with a door handle
Ambient intelligence pursues the integration of intelligent approaches on
an IoT infrastructure, mainly using everyday objects of the environment.
The main hypothesis of the work is that the way in which a user interacts
with a door handle is suitable to be used in the identification task. Our proposal contributes with a new method to identify persons in a seamless and
un-obstrusive way, suitable to be used in a smart building scenery without
the need to bring any additional device. In this case, we embed accelerometers
and gyroscopes in a door handle in order to obtain a data set comprising
samples of 47 individuals. A parametric approximation is adopted to reduce
each sample to a feature vector by using a dynamic time warping technique.
A study has been made of the outcomes of different classification techniques
over six different feature sets in order to assess the feasibility of this identification challenge. The AUC values observed with the selected feature set
show promising results above 0.90 using neural networks and SVM classifiers
Measuring the coefficient of restitution and more: a simple experiment to promote students’ critical thinking and autonomous work
Innovación EducativaAbstract
A simple experiment on the determination of the coefficient of restitution of
different materials is taken as the basis of an extendable work that can be done
by the students in an autonomous way. On the whole, the work described in
this paper would involve concepts of kinematics, materials science, air drag
and buoyancy, and would help students to think of physics as a whole subject
instead of a set of, more or less, isolated parts. The experiment can be done
either in teaching laboratories or as an autonomous work by students at home.
Students’ smartphones and cheap balls of different materials are the only
experimental materials required to do the experiment. The proposed work
also permits the students to analyse the limitations of a physical model used
in the experiment by analysing the approximations considered in it, and then
enhancing their critical thinking
Teaching and Learning Physics with Smartphones
Innovación EducativaThe use of mobile technologies is reshaping how to teach and learn. In this paper the authors describe their research on the use of these technologies to teach physics. On the one hand they develop mobile applications to complement the traditional learning and to help students learn anytime and anywhere. The use of these applications has proved to have very positive influence on the students’ engagement. On the other hand, they use smartphones as measurement devices in physics experiments. This opens the possibility of designing and
developing low cost laboratories where expensive material can be substituted by smartphones. The smartphones’ sensors are reliable and accurate enough to permit good measurements. However, as it is shown with some examples, special care must be taken here if one does not know how these apps used to access the sensors’ data are programmed
Diseño de un sistema de planeación, programación y control de la producción en Productos de Aseo Jorbel E. U.
El trabajo consiste en diseñar un sistema de planeación, programación y control de la producción con el fin de saber la cantidad de unidades a producir durante un horizonte determinado, calcular en forma general la cantidad de materia prima que se va a utilizar, el número de equipos a programar, la mano de obra necesaria y el tiempo requerido en cada operación, ya que estopermite producir un volumen de unidades acorde con lo que exige la demanda,la cualse calcula mediante técnicas de pronóstico adecuadas propuestas por los autores;se elige el producto que más se vende y rota en el mercado según datos suministrados por el gerente de la empresa, que es el jabón Dadovasito lavaloza marca El Jaguaren la presentación de 275 gramos
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