2 Search Results for "Barros, Paulo"


Document
Short Paper
A System Architecture to Detect and Block Unwanted Wireless Signals in a Classroom (Short Paper)

Authors: Daniel Barros, Paulo Barros, Emanuel Lomba, Vítor Ferreira, and Pedro Pinto

Published in: OASIcs, Volume 91, Second International Computer Programming Education Conference (ICPEC 2021)


Abstract
The actual learning process in a school, college or university should take full advantage of the digital transformation. Computers, mobile phones, tablets or other electronic devices can be used in learning environments to improve learning experience and students performance. However, in a university campus, there are some activities where the use of connected devices, might be discouraged or even forbidden. Students should be discouraged to use their own devices in classes where they may become alienated or when their devices may cause any disturbance. Ultimately, their own devices should be forbidden in activities such as closed-book exams. This paper proposes a system architecture to detect or block unwanted wireless signals by students' mobile phones in a classroom. This architecture focuses on specific wireless signals from Wi-Fi and Bluetooth interfaces, and it is based on Software-Defined Radio (SDR) modules and a set of antennas with two configuration modes: detection mode and blocking mode. When in the detection mode, the architecture processes signals from the antennas, detects if there is any signal from Wi-Fi or Bluetooth interfaces and infers a position of the unwanted mobile device. In the blocking mode, the architecture generates noise in the same frequency range of Wi-Fi or Bluetooth interfaces, blocking any possible connection. The proposed architecture is designed to be used by professors to detect or block unwanted wireless signals from student devices when supervising closed-book exams, during specific periods of time.

Cite as

Daniel Barros, Paulo Barros, Emanuel Lomba, Vítor Ferreira, and Pedro Pinto. A System Architecture to Detect and Block Unwanted Wireless Signals in a Classroom (Short Paper). In Second International Computer Programming Education Conference (ICPEC 2021). Open Access Series in Informatics (OASIcs), Volume 91, pp. 12:1-12:7, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2021)


Copy BibTex To Clipboard

@InProceedings{barros_et_al:OASIcs.ICPEC.2021.12,
  author =	{Barros, Daniel and Barros, Paulo and Lomba, Emanuel and Ferreira, V{\'\i}tor and Pinto, Pedro},
  title =	{{A System Architecture to Detect and Block Unwanted Wireless Signals in a Classroom}},
  booktitle =	{Second International Computer Programming Education Conference (ICPEC 2021)},
  pages =	{12:1--12:7},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-194-8},
  ISSN =	{2190-6807},
  year =	{2021},
  volume =	{91},
  editor =	{Henriques, Pedro Rangel and Portela, Filipe and Queir\'{o}s, Ricardo and Sim\~{o}es, Alberto},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.ICPEC.2021.12},
  URN =		{urn:nbn:de:0030-drops-142287},
  doi =		{10.4230/OASIcs.ICPEC.2021.12},
  annote =	{Keywords: campus, classroom, closed-book exam, fraud, wireless, detection, blocking, Software-Defined Radio}
}
Document
Applying Attribute Grammars to Teach Linguistic Rules

Authors: Patrícia Amorim Barros, Maria João Varanda Pereira, and Pedro Rangel Henriques

Published in: OASIcs, Volume 56, 6th Symposium on Languages, Applications and Technologies (SLATE 2017)


Abstract
An attribute grammar is a very well known formalism to describe computer languages but it can also be successfully used to describe linguistic phenomena. Since natural languages can also be expressed in grammars it is natural to describe rules using the same formalism. Linguistic teachers of the University Complutense of Madrid started using attribute grammars but they lack a tool that helps them to specify linguistic rules in a friendly and natural way. Therefore we propose a domain specific language (NLSdsl) carefully designed for non-programmers that will be implemented on an AnTLR based system.

Cite as

Patrícia Amorim Barros, Maria João Varanda Pereira, and Pedro Rangel Henriques. Applying Attribute Grammars to Teach Linguistic Rules. In 6th Symposium on Languages, Applications and Technologies (SLATE 2017). Open Access Series in Informatics (OASIcs), Volume 56, pp. 1:1-1:14, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)


Copy BibTex To Clipboard

@InProceedings{barros_et_al:OASIcs.SLATE.2017.1,
  author =	{Barros, Patr{\'\i}cia Amorim and Varanda Pereira, Maria Jo\~{a}o and Henriques, Pedro Rangel},
  title =	{{Applying Attribute Grammars to Teach Linguistic Rules}},
  booktitle =	{6th Symposium on Languages, Applications and Technologies (SLATE 2017)},
  pages =	{1:1--1:14},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-056-9},
  ISSN =	{2190-6807},
  year =	{2017},
  volume =	{56},
  editor =	{Queir\'{o}s, Ricardo and Pinto, M\'{a}rio and Sim\~{o}es, Alberto and Leal, Jos\'{e} Paulo and Varanda, Maria Jo\~{a}o},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.SLATE.2017.1},
  URN =		{urn:nbn:de:0030-drops-79376},
  doi =		{10.4230/OASIcs.SLATE.2017.1},
  annote =	{Keywords: Attribute Grammars, DSL, Linguistics}
}
  • Refine by Author
  • 1 Barros, Daniel
  • 1 Barros, Patrícia Amorim
  • 1 Barros, Paulo
  • 1 Ferreira, Vítor
  • 1 Henriques, Pedro Rangel
  • Show More...

  • Refine by Classification
  • 1 Computer systems organization → Architectures

  • Refine by Keyword
  • 1 Attribute Grammars
  • 1 DSL
  • 1 Linguistics
  • 1 Software-Defined Radio
  • 1 blocking
  • Show More...

  • Refine by Type
  • 2 document

  • Refine by Publication Year
  • 1 2017
  • 1 2021

Questions / Remarks / Feedback
X

Feedback for Dagstuhl Publishing


Thanks for your feedback!

Feedback submitted

Could not send message

Please try again later or send an E-mail