Free Software Act | ScienceGate

Implementation of an Inventory Control System for a Computer Center Using QR Codes on Android Mobile Devices

International Journal of Advanced Research in Computer Science and Software Engineering ◽

10.23956/ijarcsse.v7i11.467 ◽

2017 ◽

Vol 7 (11) ◽

pp. 50

Author(s):

Gustavo Poot Tah ◽

Erika Llanes Castro ◽

José Luis López Martínez ◽

Victor Chi Pech

Keyword(s):

Control System ◽

Inventory Control ◽

Mobile Devices ◽

Mobile Application ◽

Free Software ◽

Qr Codes ◽

Design And Development ◽

Computer Center

This paper presents the design and development of a mobile application that uses QR codes for the inventory control of a computer center. This application was developed to support the administration of the computer center of the Multidisciplinary Unit Tizimin, with the aim to reduce costs and time of searching for articles when making an inventory, by leveraging the capabilities of smartphones and tablets. The implementation of the system was carried out using free software.

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Visualizing 3D Molecular Structures Using an Augmented Reality App

10.26434/chemrxiv.10031888.v1 ◽

2019 ◽

Author(s):

Kristina Eriksen ◽

Bjarne Nielsen ◽

Michael Pittelkow

Keyword(s):

Augmented Reality ◽

Small Molecules ◽

Computer Modelling ◽

Simple Procedure ◽

3D Structure ◽

Molecular Structures ◽

Free Software ◽

Programming Skills ◽

2D Space ◽

Made In

<p>We present a simple procedure to make an augmented reality app to visualize any 3D chemical model. The molecular structure may be based on data from crystallographic data or from computer modelling. This guide is made in such a way, that no programming skills are needed and the procedure uses free software and is a way to visualize 3D structures that are normally difficult to comprehend in the 2D space of paper. The process can be applied to make 3D representation of any 2D object, and we envisage the app to be useful when visualizing simple stereochemical problems, when presenting a complex 3D structure on a poster presentation or even in audio-visual presentations. The method works for all molecules including small molecules, supramolecular structures, MOFs and biomacromolecules.</p>

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Internet, software libre, brecha digital y analfabetismo informacional una reflexión y discusión pendiente en la Universidad. (Internet, Free Software, Digital Divide and Information Illiteracy a Reflection and Discussion Pending at the University)

SSRN Electronic Journal ◽

10.2139/ssrn.3490748 ◽

2005 ◽

Author(s):

Alejandro Uribe-Tirado

Keyword(s):

Digital Divide ◽

Free Software ◽

The University

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Combination of Free Software, Light Microscopy and Non-specific Dyes for a High-throughput Analysis in Live/Dead Cell Count

Current Pharmaceutical Analysis ◽

10.2174/1573412911666150331224332 ◽

2015 ◽

Vol 11 (4) ◽

pp. 233-238 ◽

Cited By ~ 1

Author(s):

Luciano Cardoso ◽

Suellen Cordeiro ◽

Marcio Fronza ◽

Denise Endringer ◽

Tadeu de Andrade ◽

...

Keyword(s):

Light Microscopy ◽

Cell Count ◽

High Throughput ◽

Free Software ◽

Dead Cell ◽

High Throughput Analysis ◽

Throughput Analysis

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New Omnidirectional Sensor Based on Open-Source Software and Hardware for Tracking and Backtracking of Dual-Axis Solar Trackers in Photovoltaic Plants

Sensors ◽

10.3390/s21030726 ◽

2021 ◽

Vol 21 (3) ◽

pp. 726

Author(s):

Francisco J. Gómez-Uceda ◽

José Ramirez-Faz ◽

Marta Varo-Martinez ◽

Luis Manuel Fernández-Ahumada

Keyword(s):

Open Source Software ◽

Energy Production ◽

Scientific Community ◽

Radiative Capture ◽

Low Cost ◽

Free Software ◽

Solar Tracking ◽

Software And Hardware ◽

Celestial Sphere ◽

Photovoltaic Plants

In this work, an omnidirectional sensor that enables identification of the direction of the celestial sphere with maximum solar irradiance is presented. The sensor, based on instantaneous measurements, functions as a position server for dual-axis solar trackers in photovoltaic plants. The proposed device has been developed with free software and hardware, which makes it a pioneering solution because it is open and accessible as well as capable of being improved by the scientific community, thereby contributing to the rapid advancement of technology. In addition, the device includes an algorithm developed ex professo that makes it possible to predetermine the regions of the celestial sphere for which, according to the geometric characteristics of the PV plant, there would be shading between the panels. In this way, solar trackers do not have to locate the Sun’s position at all times according to astronomical models, while taking into account factors such as shadows or cloudiness that also affect levels of incident irradiance on solar collectors. Therefore, with this device, it is possible to provide photovoltaic plants with dual-axis solar tracking with a low-cost device that helps to optimise the trajectory of the trackers and, consequently, their radiative capture and energy production.

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A Novel Method for Precise Guided Hole Fabrication of Dental Implant Surgical Guide Fabricated with 3D Printing Technology

Applied Sciences ◽

10.3390/app11010049 ◽

2020 ◽

Vol 11 (1) ◽

pp. 49

Author(s):

Keunbada Son ◽

Kyu-Bok Lee

Keyword(s):

3D Printing ◽

Dental Implant ◽

Present Report ◽

Free Software ◽

3D Printer ◽

Printing Technology ◽

Surgical Guide ◽

3 Dimensional ◽

3D Printing Technology ◽

Novel Method

A dental implant surgical guide fabricated by 3-dimensional (3D) printing technology is widely used in clinical practice due to its convenience and fast fabrication. However, the 3D printing technology produces an incorrect guide hole due to the shrinkage of the resin materials, and in order to solve this, the guide hole is adjusted using a trimmer or a metal sleeve is attached to the guide hole. These methods can lead to another inaccuracy. The present method reports a technique to compensate for a decreased guide hole caused by shrinkage that can occur when a computer-guided implant surgical guide is fabricated with a 3D printer. The present report describes a technique to adjust the size of the guide hole using a free software program to identify the optimized guide hole size that is fabricated with the 3D printer.

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