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Prof. Raúl Aquino
University of Colima

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Research Keywords & Expertise

0 Wireless Technologies
0 IoT
0 environmental & health
0 ad hoc sensor network
0 Agriculture 4.0

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Wireless Technologies
IoT

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Journal article
Published: 14 September 2020 in Sensors
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This paper presents a system of sensors used in flash flood prediction that offers critical real-time information used to provide early warnings that can provide the minutes needed for persons to evacuate before imminent events. Flooding is one of the most serious natural disasters humans confront in terms of loss of life and results in long-term effects, which often have severely adverse social consequences. However, flash floods are potentially more dangerous to life because there is often little or no forewarning of the impending disaster. The Emergency Water Information Network (EWIN) offers a solution that integrates an early warning system, notifications, and real-time monitoring of flash flood risks. The platform has been implemented in Colima, Mexico covering the Colima and Villa de Alvarez metropolitan area. This platform consists of eight fixed riverside hydrological monitoring stations, eight meteorological stations, nomadic mobile monitoring stations called “drifters” used in the flow, and a sniffer with data muling capability. The results show that this platform effectively compiles and forwards information to decision-makers, government officials, and the general public, potentially providing valuable minutes for people to evacuate dangerous areas.

ACS Style

José Ibarreche; Raúl Aquino; R. M. Edwards; Víctor Rangel; Ismael Pérez; Miguel Martínez; Esli Castellanos; Elisa Álvarez; Saul Jimenez; Raúl Rentería; Arthur Edwards; Omar Álvarez. Flash Flood Early Warning System in Colima, Mexico. Sensors 2020, 20, 5231 .

AMA Style

José Ibarreche, Raúl Aquino, R. M. Edwards, Víctor Rangel, Ismael Pérez, Miguel Martínez, Esli Castellanos, Elisa Álvarez, Saul Jimenez, Raúl Rentería, Arthur Edwards, Omar Álvarez. Flash Flood Early Warning System in Colima, Mexico. Sensors. 2020; 20 (18):5231.

Chicago/Turabian Style

José Ibarreche; Raúl Aquino; R. M. Edwards; Víctor Rangel; Ismael Pérez; Miguel Martínez; Esli Castellanos; Elisa Álvarez; Saul Jimenez; Raúl Rentería; Arthur Edwards; Omar Álvarez. 2020. "Flash Flood Early Warning System in Colima, Mexico." Sensors 20, no. 18: 5231.

Journal article
Published: 02 January 2019 in Sensors
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Flooding is one of the most frequent and costly natural disasters affecting mankind. However, implementing Internet of Things (IoT) technology to monitor river behavior may help mitigate or prevent future disasters. This article outlines the hardware development of an IoT system (RiverCore) and defines an application scenario in a specific hydrological region of the state of Colima (Mexico), highlighting the characteristics of data acquisition and data processing used. Both fixed position and moving drifter node systems are described along with web-based data acquisition platform developments integrated with IoT techniques to retrieve data through 3G cellular networks. The developed architecture uses the Message Queuing Telemetry Transport (MQTT) protocol, along with encryption and security mechanisms, to send real-time data packages from fixed nodes to a server that stores retrieved data in a non-relational database. From this, data can be accessed and displayed through different customizable queries and graphical representations, allowing future use in flood analysis and prediction systems. All of these features are presented along with graphical evidence of the deployment of the different devices and of several cellular communication and on-site data acquisition tests.

ACS Style

Carlos Moreno; Raúl Aquino; José Ibarreche; Ismael Pérez; Esli Castellanos; Elisa Álvarez; Raúl Rentería; Luis Anguiano; Arthur Edwards; Paul Lepper; Robert M. Edwards; Ben Clark. RiverCore: IoT Device for River Water Level Monitoring over Cellular Communications. Sensors 2019, 19, 127 .

AMA Style

Carlos Moreno, Raúl Aquino, José Ibarreche, Ismael Pérez, Esli Castellanos, Elisa Álvarez, Raúl Rentería, Luis Anguiano, Arthur Edwards, Paul Lepper, Robert M. Edwards, Ben Clark. RiverCore: IoT Device for River Water Level Monitoring over Cellular Communications. Sensors. 2019; 19 (1):127.

Chicago/Turabian Style

Carlos Moreno; Raúl Aquino; José Ibarreche; Ismael Pérez; Esli Castellanos; Elisa Álvarez; Raúl Rentería; Luis Anguiano; Arthur Edwards; Paul Lepper; Robert M. Edwards; Ben Clark. 2019. "RiverCore: IoT Device for River Water Level Monitoring over Cellular Communications." Sensors 19, no. 1: 127.

Journal article
Published: 19 January 2017 in Sensors
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The number of elderly and chronically ill patients has grown significantly over the past few decades as life expectancy has increased worldwide, leading to increased demands on the health care system and significantly taxing traditional health care practices. Consequently, there is an urgent need to use technology to innovate and more constantly and intensely monitor, report and analyze critical patient physiological parameters beyond conventional clinical settings in a more efficient and cost effective manner. This paper presents a technological platform called PlaIMoS which consists of wearable sensors, a fixed measurement station, a network infrastructure that employs IEEE 802.15.4 and IEEE 802.11 to transmit data with security mechanisms, a server to analyze all information collected and apps for iOS, Android and Windows 10 mobile operating systems to provide real-time measurements. The developed architecture, designed primarily to record and report electrocardiogram and heart rate data, also monitors parameters associated with chronic respiratory illnesses, including patient blood oxygen saturation and respiration rate, body temperature, fall detection and galvanic resistance.

ACS Style

Ramses Miramontes; Raúl Aquino; Arturo Flores; Guillermo Rodríguez; Rafael Anguiano; Arturo Ríos; Arthur Edwards. PlaIMoS: A Remote Mobile Healthcare Platform to Monitor Cardiovascular and Respiratory Variables. Sensors 2017, 17, 176 .

AMA Style

Ramses Miramontes, Raúl Aquino, Arturo Flores, Guillermo Rodríguez, Rafael Anguiano, Arturo Ríos, Arthur Edwards. PlaIMoS: A Remote Mobile Healthcare Platform to Monitor Cardiovascular and Respiratory Variables. Sensors. 2017; 17 (1):176.

Chicago/Turabian Style

Ramses Miramontes; Raúl Aquino; Arturo Flores; Guillermo Rodríguez; Rafael Anguiano; Arturo Ríos; Arthur Edwards. 2017. "PlaIMoS: A Remote Mobile Healthcare Platform to Monitor Cardiovascular and Respiratory Variables." Sensors 17, no. 1: 176.

Journal article
Published: 28 April 2016 in Sensors
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This article discusses the simulation and evaluation of a traffic congestion detection system which combines inter-vehicular communications, fixed roadside infrastructure and infrastructure-to-infrastructure connectivity and big data. The system discussed in this article permits drivers to identify traffic congestion and change their routes accordingly, thus reducing the total emissions of CO2 and decreasing travel time. This system monitors, processes and stores large amounts of data, which can detect traffic congestion in a precise way by means of a series of algorithms that reduces localized vehicular emission by rerouting vehicles. To simulate and evaluate the proposed system, a big data cluster was developed based on Cassandra, which was used in tandem with the OMNeT++ discreet event network simulator, coupled with the SUMO (Simulation of Urban MObility) traffic simulator and the Veins vehicular network framework. The results validate the efficiency of the traffic detection system and its positive impact in detecting, reporting and rerouting traffic when traffic events occur.

ACS Style

Néstor Cárdenas-Benítez; Raúl Aquino-Santos; Pedro Magaña-Espinoza; José Aguilar-Velazco; Arthur Edwards-Block; Aldo Medina Cass. Traffic Congestion Detection System through Connected Vehicles and Big Data. Sensors 2016, 16, 599 .

AMA Style

Néstor Cárdenas-Benítez, Raúl Aquino-Santos, Pedro Magaña-Espinoza, José Aguilar-Velazco, Arthur Edwards-Block, Aldo Medina Cass. Traffic Congestion Detection System through Connected Vehicles and Big Data. Sensors. 2016; 16 (5):599.

Chicago/Turabian Style

Néstor Cárdenas-Benítez; Raúl Aquino-Santos; Pedro Magaña-Espinoza; José Aguilar-Velazco; Arthur Edwards-Block; Aldo Medina Cass. 2016. "Traffic Congestion Detection System through Connected Vehicles and Big Data." Sensors 16, no. 5: 599.

Journal article
Published: 22 April 2014 in Sensors
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This paper presents a system based on WSN technology capable of monitoring heart rate and the rate of motion of seniors within their homes. The system is capable of remotely alerting specialists, caretakers or family members via a smartphone of rapid physiological changes due to falls, tachycardia or bradycardia. This work was carried out using our workgroup's WiSe platform, which we previously developed for use in WSNs. The proposed WSN architecture is flexible, allowing for greater scalability to better allow event-based monitoring. The architecture also provides security mechanisms to assure that the monitored and/or stored data can only be accessed by authorized individuals or devices. The aforementioned characteristics provide the network versatility and solidity required for use in health applications.

ACS Style

Pedro Magaña-Espinoza; Raul Aquino-Santos; Néstor Cárdenas-Benítez; José Aguilar-Velasco; César Buenrostro-Segura; Arthur Edwards-Block; Aldo Medina-Cass. WiSPH: A Wireless Sensor Network-Based Home Care Monitoring System. Sensors 2014, 14, 7096 -7119.

AMA Style

Pedro Magaña-Espinoza, Raul Aquino-Santos, Néstor Cárdenas-Benítez, José Aguilar-Velasco, César Buenrostro-Segura, Arthur Edwards-Block, Aldo Medina-Cass. WiSPH: A Wireless Sensor Network-Based Home Care Monitoring System. Sensors. 2014; 14 (4):7096-7119.

Chicago/Turabian Style

Pedro Magaña-Espinoza; Raul Aquino-Santos; Néstor Cárdenas-Benítez; José Aguilar-Velasco; César Buenrostro-Segura; Arthur Edwards-Block; Aldo Medina-Cass. 2014. "WiSPH: A Wireless Sensor Network-Based Home Care Monitoring System." Sensors 14, no. 4: 7096-7119.

Journal article
Published: 29 November 2013 in Sensors
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This paper introduces wireless sensor networks for Ambient Assisted Living as a proof of concept. Our workgroup has developed an arrhythmia detection algorithm that we evaluate in a closed space using a wireless sensor network to relay the information collected to where the information can be registered, monitored and analyzed to support medical decisions by healthcare providers. The prototype we developed is then evaluated using the TelosB platform. The proposed architecture considers very specific restrictions regarding the use of wireless sensor networks in clinical situations. The seamless integration of the system architecture enables both mobile node and network configuration, thus providing the versatile and robust characteristics necessary for real-time applications in medical situations. Likewise, this system architecture efficiently permits the different components of our proposed platform to interact efficiently within the parameters of this study.

ACS Style

Raúl Aquino-Santos; Diego Martinez-Castro; Arthur Edwards-Block; Andrés Felipe Murillo-Piedrahita. Wireless Sensor Networks for Ambient Assisted Living. Sensors 2013, 13, 16384 -16405.

AMA Style

Raúl Aquino-Santos, Diego Martinez-Castro, Arthur Edwards-Block, Andrés Felipe Murillo-Piedrahita. Wireless Sensor Networks for Ambient Assisted Living. Sensors. 2013; 13 (12):16384-16405.

Chicago/Turabian Style

Raúl Aquino-Santos; Diego Martinez-Castro; Arthur Edwards-Block; Andrés Felipe Murillo-Piedrahita. 2013. "Wireless Sensor Networks for Ambient Assisted Living." Sensors 13, no. 12: 16384-16405.

Conference paper
Published: 01 January 2013 in Transactions on Petri Nets and Other Models of Concurrency XV
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Millions of driving accidents occur worldwide each year causing more than a million fatalities. Although traditional safety measures are largely reactive in nature, the application of wireless technologies has become much more common, thus promoting proactive strategies to save lives. This article presents the development and evaluation of usability of a driving simulator with a visual and auditory interface to assist drivers more quickly identify emergencies on the road, which, when used with the support of wireless ad hoc networking, can contribute to reducing vehicular accidents. The usability results obtained in this study were favorable according to the System Usability Scale (SUS) usability questionnaire, which was applied as a post-test. Employing the SUS, respondents reported the interface to be acceptable or good. Results show that utility of the visual interface was 69% and the score for the auditory interface was 100%. In sum, respondents felt the interfaces were useful in reported upcoming emergency or accident situations.

ACS Style

Juan Michel García-Díaz; Miguel A. García-Ruiz; Raúl Aquino-Santos; Arthur Edwards-Block. Evaluation of a Driving Simulator with a Visual and Auditory Interface. Transactions on Petri Nets and Other Models of Concurrency XV 2013, 131 -139.

AMA Style

Juan Michel García-Díaz, Miguel A. García-Ruiz, Raúl Aquino-Santos, Arthur Edwards-Block. Evaluation of a Driving Simulator with a Visual and Auditory Interface. Transactions on Petri Nets and Other Models of Concurrency XV. 2013; ():131-139.

Chicago/Turabian Style

Juan Michel García-Díaz; Miguel A. García-Ruiz; Raúl Aquino-Santos; Arthur Edwards-Block. 2013. "Evaluation of a Driving Simulator with a Visual and Auditory Interface." Transactions on Petri Nets and Other Models of Concurrency XV , no. : 131-139.

Journal article
Published: 24 October 2012 in Sensors
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Vehicular Ad Hoc Networks (VANETs) are considered by car manufacturers and the research community as the enabling technology to radically improve the safety, efficiency and comfort of everyday driving. However, before VANET technology can fulfill all its expected potential, several difficulties must be addressed. One key issue arising when working with VANETs is the complexity of the networking protocols compared to those used by traditional infrastructure networks. Therefore, proper design of the routing strategy becomes a main issue for the effective deployment of VANETs. In this paper, a reliable freestanding position-based routing algorithm (FPBR) for highway scenarios is proposed. For this scenario, several important issues such as the high mobility of vehicles and the propagation conditions may affect the performance of the routing strategy. These constraints have only been partially addressed in previous proposals. In contrast, the design approach used for developing FPBR considered the constraints imposed by a highway scenario and implements mechanisms to overcome them. FPBR performance is compared to one of the leading protocols for highway scenarios. Performance metrics show that FPBR yields similar results when considering freespace propagation conditions, and outperforms the leading protocol when considering a realistic highway path loss model.

ACS Style

Gabriel A. Galaviz-Mosqueda; Raul Aquino-Santos; Salvador Villarreal-Reyes; Raúl Rivera-Rodríguez; Luis Villasenor-Gonzalez; Arthur Edwards. Reliable Freestanding Position-Based Routing in Highway Scenarios. Sensors 2012, 12, 14262 -14291.

AMA Style

Gabriel A. Galaviz-Mosqueda, Raul Aquino-Santos, Salvador Villarreal-Reyes, Raúl Rivera-Rodríguez, Luis Villasenor-Gonzalez, Arthur Edwards. Reliable Freestanding Position-Based Routing in Highway Scenarios. Sensors. 2012; 12 (11):14262-14291.

Chicago/Turabian Style

Gabriel A. Galaviz-Mosqueda; Raul Aquino-Santos; Salvador Villarreal-Reyes; Raúl Rivera-Rodríguez; Luis Villasenor-Gonzalez; Arthur Edwards. 2012. "Reliable Freestanding Position-Based Routing in Highway Scenarios." Sensors 12, no. 11: 14262-14291.

Journal article
Published: 13 June 2012 in Sensors
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Because battery-powered nodes are required in wireless sensor networks and energy consumption represents an important design consideration, alternate energy sources are needed to provide more effective and optimal function. The main goal of this work is to present an energy harvesting wireless sensor network platform, the Open Wireless Sensor node (WiSe). The design and implementation of the solar powered wireless platform is described including the hardware architecture, firmware, and a POSIX Real-Time Kernel. A sleep and wake up strategy was implemented to prolong the lifetime of the wireless sensor network. This platform was developed as a tool for researchers investigating Wireless sensor network or system integrators.

ACS Style

Apolinar González; Raúl Aquino; Walter Mata; Alberto Ochoa; Pedro Saldaña; Arthur Edwards. Open-WiSe: A Solar Powered Wireless Sensor Network Platform. Sensors 2012, 12, 8204 -8217.

AMA Style

Apolinar González, Raúl Aquino, Walter Mata, Alberto Ochoa, Pedro Saldaña, Arthur Edwards. Open-WiSe: A Solar Powered Wireless Sensor Network Platform. Sensors. 2012; 12 (6):8204-8217.

Chicago/Turabian Style

Apolinar González; Raúl Aquino; Walter Mata; Alberto Ochoa; Pedro Saldaña; Arthur Edwards. 2012. "Open-WiSe: A Solar Powered Wireless Sensor Network Platform." Sensors 12, no. 6: 8204-8217.

Chapter
Published: 19 April 2012 in Streaming Media with Peer-to-Peer Networks
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This chapter proposes an open-service platform based on an IP metropolitan mesh network suitable for multimedia services in an all-IP network environment. To guarantee mobile applications in the metropolitan mesh network simulated, the authors evaluated the five most prominent mobile ad hoc network (MANET) routing algorithms: Ad hoc On Demand Distance Vector (AODV), Dynamic Source Routing protocol for mobile ad hoc networks (DSR), Optimized Link State Routing Protocol (OLSR), Temporally-Ordered Routing Algorithm (TORA), and Geographic Routing Protocol (GRP). The metropolitan mesh network architecture is based on the IEEE 802.16-2004 Standard that supports the IP protocol and the interaction with MANET protocols. The MANET routing protocols are evaluated in terms of delivery ratio, MANET delay, routing overhead, overhead, WiMAX delay, WiMAX load, and WiMAX throughput. Results show that proactive routing algorithms are more efficient than the reactive routing algorithms for the IP metropolitan-mesh network simulated.

ACS Style

Raul Aquino-Santos; Arthur Edwards-Block; Víctor Rangel-Licea. An Open Service Platform Based on an IP Metropolitan Mesh Network. Streaming Media with Peer-to-Peer Networks 2012, 267 -287.

AMA Style

Raul Aquino-Santos, Arthur Edwards-Block, Víctor Rangel-Licea. An Open Service Platform Based on an IP Metropolitan Mesh Network. Streaming Media with Peer-to-Peer Networks. 2012; ():267-287.

Chicago/Turabian Style

Raul Aquino-Santos; Arthur Edwards-Block; Víctor Rangel-Licea. 2012. "An Open Service Platform Based on an IP Metropolitan Mesh Network." Streaming Media with Peer-to-Peer Networks , no. : 267-287.

Book chapter
Published: 16 December 2011 in Recent Developments in Mobile Communications - A Multidisciplinary Approach
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ACS Style

Raul Aquino-Santos; Antonio Guerrero-Ibáñez; Arthur Edwards-Block. Comparative Analysis of IEEE 802.11p and IEEE 802.16-2004 Technologies in a Vehicular Scenario. Recent Developments in Mobile Communications - A Multidisciplinary Approach 2011, 1 .

AMA Style

Raul Aquino-Santos, Antonio Guerrero-Ibáñez, Arthur Edwards-Block. Comparative Analysis of IEEE 802.11p and IEEE 802.16-2004 Technologies in a Vehicular Scenario. Recent Developments in Mobile Communications - A Multidisciplinary Approach. 2011; ():1.

Chicago/Turabian Style

Raul Aquino-Santos; Antonio Guerrero-Ibáñez; Arthur Edwards-Block. 2011. "Comparative Analysis of IEEE 802.11p and IEEE 802.16-2004 Technologies in a Vehicular Scenario." Recent Developments in Mobile Communications - A Multidisciplinary Approach , no. : 1.

Chapter
Published: 24 May 2011 in Applying Design Thinking to the Measurement of Experiential Learning
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Small and medium-sized businesses (SMBs) in most world economies suffer from a series of intense economic pressures from local, regional and international markets. Although these problems are microeconomic to the small and medium-sized business, they are directly related to macro economic factors, particularly in the case of labor. One of the main pressures small and medium-sized businesses suffer from is the lack of worker technical skills. Past research has consistently shown that virtual reality (VR) can be effective for supporting competency-based training skills. The objective of this chapter is to provide an overview on how virtual reality can be used to support technical training in SMBs, including the use of Second Life and DIVE VR platforms. This chapter describes a desktop VR Application for training car mechanics from a small business and highlights advantages and challenges of desktop virtual reality for technical training. Finally, future trends related to the use of VR in training are discussed.

ACS Style

Miguel A. Garcia-Ruiz; Arthur Edwards; Raul Aquino-Santos; Samir El-Seoud; Miguel Vargas Martin. Desktop Virtual Reality Applications for Training Personnel of Small Businesses. Applying Design Thinking to the Measurement of Experiential Learning 2011, 69 -88.

AMA Style

Miguel A. Garcia-Ruiz, Arthur Edwards, Raul Aquino-Santos, Samir El-Seoud, Miguel Vargas Martin. Desktop Virtual Reality Applications for Training Personnel of Small Businesses. Applying Design Thinking to the Measurement of Experiential Learning. 2011; ():69-88.

Chicago/Turabian Style

Miguel A. Garcia-Ruiz; Arthur Edwards; Raul Aquino-Santos; Samir El-Seoud; Miguel Vargas Martin. 2011. "Desktop Virtual Reality Applications for Training Personnel of Small Businesses." Applying Design Thinking to the Measurement of Experiential Learning , no. : 69-88.

Chapter
Published: 24 May 2011 in Virtual Communities
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Small and medium-sized businesses (SMBs) in most world economies suffer from a series of intense economic pressures from local, regional and international markets. Although these problems are microeconomic to the small and medium-sized business, they are directly related to macro economic factors, particularly in the case of labor. One of the main pressures small and medium-sized businesses suffer from is the lack of worker technical skills. Past research has consistently shown that virtual reality (VR) can be effective for supporting competency-based training skills. The objective of this chapter is to provide an overview on how virtual reality can be used to support technical training in SMBs, including the use of Second Life and DIVE VR platforms. This chapter describes a desktop VR Application for training car mechanics from a small business and highlights advantages and challenges of desktop virtual reality for technical training. Finally, future trends related to the use of VR in training are discussed.

ACS Style

Miguel A. Garcia-Ruiz; Arthur Edwards; Raul Aquino-Santos; Samir El-Seoud; Miguel Vargas Martin. Desktop Virtual Reality Applications for Training Personnel of Small Businesses. Virtual Communities 2011, 837 -856.

AMA Style

Miguel A. Garcia-Ruiz, Arthur Edwards, Raul Aquino-Santos, Samir El-Seoud, Miguel Vargas Martin. Desktop Virtual Reality Applications for Training Personnel of Small Businesses. Virtual Communities. 2011; ():837-856.

Chicago/Turabian Style

Miguel A. Garcia-Ruiz; Arthur Edwards; Raul Aquino-Santos; Samir El-Seoud; Miguel Vargas Martin. 2011. "Desktop Virtual Reality Applications for Training Personnel of Small Businesses." Virtual Communities , no. : 837-856.

Journal article
Published: 20 January 2011 in Sensors
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Wireless sensor networks are gaining greater attention from the research community and industrial professionals because these small pieces of “smart dust” offer great advantages due to their small size, low power consumption, easy integration and support for “green” applications. Green applications are considered a hot topic in intelligent environments, ubiquitous and pervasive computing. This work evaluates a new wireless sensor network platform and its application in precision agriculture, including its embedded operating system and its routing algorithm. To validate the technological platform and the embedded operating system, two different routing strategies were compared: hierarchical and flat. Both of these routing algorithms were tested in a small-scale network applied to a watermelon field. However, we strongly believe that this technological platform can be also applied to precision agriculture because it incorporates a modified version of LORA-CBF, a wireless location-based routing algorithm that uses cluster-based flooding. Cluster-based flooding addresses the scalability concerns of wireless sensor networks, while the modified LORA-CBF routing algorithm includes a metric to monitor residual battery energy. Furthermore, results show that the modified version of LORA-CBF functions well with both the flat and hierarchical algorithms, although it functions better with the flat algorithm in a small-scale agricultural network.

ACS Style

Raúl Aquino-Santos; Apolinar González-Potes; Arthur Edwards-Block; Raúl Alejandro Virgen-Ortiz. Developing a New Wireless Sensor Network Platform and Its Application in Precision Agriculture. Sensors 2011, 11, 1192 -1211.

AMA Style

Raúl Aquino-Santos, Apolinar González-Potes, Arthur Edwards-Block, Raúl Alejandro Virgen-Ortiz. Developing a New Wireless Sensor Network Platform and Its Application in Precision Agriculture. Sensors. 2011; 11 (1):1192-1211.

Chicago/Turabian Style

Raúl Aquino-Santos; Apolinar González-Potes; Arthur Edwards-Block; Raúl Alejandro Virgen-Ortiz. 2011. "Developing a New Wireless Sensor Network Platform and Its Application in Precision Agriculture." Sensors 11, no. 1: 1192-1211.

Chapter
Published: 01 January 2011 in Multi-User Virtual Environments for the Classroom
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This chapter investigates whether an educational virtual environment can be developed to practice listening comprehension skills that meets second language student needs, complies with usability criteria, and is motivating to use. The chapter also investigates whether the usability of virtual reality(VR) technology positively affects language learning listening comprehension. It provides background research and information in Computer Assisted Language Learning (CALL), VR, and second language methodology. It then presents a technical and qualitative description of Realtown, a virtual environment designed to promote listening comprehension. This chapter also describes a usability study of Realtown. Student errors, motivation, and ease of use, among other features, were positively measured on listening comprehension activities in Realtown. Future work includes longitudinal studies on learning issues, first-person, and collaborative experiences in VR, including the impact of VR on learning and knowledge transfer when combined with traditional instruction.

ACS Style

Miguel A. Garcia-Ruiz; Arthur Edwards; Raul Aquino-Santos; Jay Shiro Tashiro; Bill Kapralos. Towards Usable Collaborative Virtual Reality Environments for Promoting Listening Comprehension. Multi-User Virtual Environments for the Classroom 2011, 386 -411.

AMA Style

Miguel A. Garcia-Ruiz, Arthur Edwards, Raul Aquino-Santos, Jay Shiro Tashiro, Bill Kapralos. Towards Usable Collaborative Virtual Reality Environments for Promoting Listening Comprehension. Multi-User Virtual Environments for the Classroom. 2011; ():386-411.

Chicago/Turabian Style

Miguel A. Garcia-Ruiz; Arthur Edwards; Raul Aquino-Santos; Jay Shiro Tashiro; Bill Kapralos. 2011. "Towards Usable Collaborative Virtual Reality Environments for Promoting Listening Comprehension." Multi-User Virtual Environments for the Classroom , no. : 386-411.

Journal article
Published: 31 October 2010 in AEU - International Journal of Electronics and Communications
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The rapid growth of cellular mobile technology in recent years, coupled with the explosive growth of the Internet, has significantly increased the demand for wireless data services. Traffic on mobile devices is expected to be a mix of real-time traffic such as video, voice, and data, with users requiring diverse quality of service (QoS) guarantees for different types of traffic (video, voice and data). One of the primary challenges of providing QoS is how to prioritize and allocate network resources among contending applications. In order to achieve these goals, a scheduling scheme that can provide equitable and effective packet routing is required. This paper proposes a scheduling scheme called remote queuing multiple access-code division multiple access (RQMA-CDMA), whose purpose is to equitably assign bandwidth resources with QoS guarantees to different mobile devices. RQMA-CDMA is a rate scheduling scheme that can be used to assign bandwidth resources in conjunction with GPS (generalized processor sharing). Additionally, we analyze an admission control that is based on signal to interference plus noise ratio (SINR) for multimedia traffic. Finally, the performance of RQMA-CDMA is evaluated and compared to schemes based on CDMA-GPS according to dropped packets, delay, and throughput.

ACS Style

Aldo Mendez; Raúl Aquino; David Covarrubias; Marco Panduro. Performance evaluation of the RQMA-CDMA scheme for multimedia traffic with QoS guarantees. AEU - International Journal of Electronics and Communications 2010, 64, 916 -923.

AMA Style

Aldo Mendez, Raúl Aquino, David Covarrubias, Marco Panduro. Performance evaluation of the RQMA-CDMA scheme for multimedia traffic with QoS guarantees. AEU - International Journal of Electronics and Communications. 2010; 64 (10):916-923.

Chicago/Turabian Style

Aldo Mendez; Raúl Aquino; David Covarrubias; Marco Panduro. 2010. "Performance evaluation of the RQMA-CDMA scheme for multimedia traffic with QoS guarantees." AEU - International Journal of Electronics and Communications 64, no. 10: 916-923.

Chapter
Published: 26 May 2010 in Advances in Vehicular Ad-Hoc Networks
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This chapter analyzes two prominent technologies, IEEE 802.11g (WiFi) and IEEE 802.16e (WiMAX), for single-hop inter-vehicular communication (SIVC). We begin our analysis by comparing the physical and MAC layers of both standards. Following this, we simulate two scenarios, one with IEEE 802.11g and the other with IEEE 802.16e, in a single-hop inter-vehicular communication network. In both scenarios, the Location-Based Routing Algorithm with Cluster-Based Flooding (LORA-CBF) was employed to create a hierarchical vehicular organization that acts as a cluster-head with its corresponding member nodes. The simulation scenarios consist of five different node sizes of 20, 40, 60, 80 and 100 vehicles, respectively. We propose a novel simulation model that is suitable for mesh topologies in WiMAX networks and provide preliminary results in terms of delay, load and throughput for single-hop inter-vehicle communication.

ACS Style

Raul Aquino-Santos; Víctor Rangel-Licea; Aldo L. Méndez-Pérez; Miguel A. Garcia-Ruiz; Arthur Edwards-Block; Eduardo Flores-Flores. Analyzing IEEE 802.11g and IEEE 802.16e Technologies for Single-Hop Inter-Vehicle Communication. Advances in Vehicular Ad-Hoc Networks 2010, 120 -148.

AMA Style

Raul Aquino-Santos, Víctor Rangel-Licea, Aldo L. Méndez-Pérez, Miguel A. Garcia-Ruiz, Arthur Edwards-Block, Eduardo Flores-Flores. Analyzing IEEE 802.11g and IEEE 802.16e Technologies for Single-Hop Inter-Vehicle Communication. Advances in Vehicular Ad-Hoc Networks. 2010; ():120-148.

Chicago/Turabian Style

Raul Aquino-Santos; Víctor Rangel-Licea; Aldo L. Méndez-Pérez; Miguel A. Garcia-Ruiz; Arthur Edwards-Block; Eduardo Flores-Flores. 2010. "Analyzing IEEE 802.11g and IEEE 802.16e Technologies for Single-Hop Inter-Vehicle Communication." Advances in Vehicular Ad-Hoc Networks , no. : 120-148.

Chapter
Published: 18 May 2010 in Automotive Informatics and Communicative Systems
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This chapter proposes a new routing algorithm that allows communication in vehicular ad hoc networks. In vehicular ad hoc networks, the transmitter node cannot determine the immediate future position of the receiving node beforehand. Furthermore, rapid topological changes and limited bandwidth compound the difficulties nodes experience when attempting to exchange position information. The authors first validate their algorithm in a small-scale network with test bed results. Then, for large-scale networks, they compare their protocol with the models of two prominent reactive routing algorithms: Ad-Hoc On-Demand Distance Vector and Dynamic Source Routing on a multi-lane circular dual motorway, representative of motorway driving. Then the authors compare their algorithm with motorway vehicular mobility, a location-based routing algorithm, on a multi-lane circular motorway. This chapter then provides motorway vehicular mobility results of a microscopic traffic model developed in OPNET, which the authors use to evaluate the performance of each protocol in terms of: Route Discovery Time, End to End Delay, Routing Overhead, Overhead, Routing Load, and Delivery Ratio.

ACS Style

Raul Aquino-Santos; Víctor Rangel-Licea; Miguel A. Garcia-Ruiz; Apolinar González-Potes; Omar Álvarez-Cardenas; Arthur Edwards-Block. Inter-Vehicular Communications Using Wireless Ad Hoc Networks. Automotive Informatics and Communicative Systems 2010, 120 -138.

AMA Style

Raul Aquino-Santos, Víctor Rangel-Licea, Miguel A. Garcia-Ruiz, Apolinar González-Potes, Omar Álvarez-Cardenas, Arthur Edwards-Block. Inter-Vehicular Communications Using Wireless Ad Hoc Networks. Automotive Informatics and Communicative Systems. 2010; ():120-138.

Chicago/Turabian Style

Raul Aquino-Santos; Víctor Rangel-Licea; Miguel A. Garcia-Ruiz; Apolinar González-Potes; Omar Álvarez-Cardenas; Arthur Edwards-Block. 2010. "Inter-Vehicular Communications Using Wireless Ad Hoc Networks." Automotive Informatics and Communicative Systems , no. : 120-138.

Journal article
Published: 01 April 2010 in Journal of Applied Research and Technology
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This paper presents a performance analysis of an enhanced version of the Topological Multicast Routing Algorithm (ToMuRo) on mobile wireless ad‐hoc networks, which includes undecided border nodes. Employing undecided border nodes to forward multicast packets represents a significant enhancement because it optimizes the path discovery process by selecting undecided nodes that can function as multicast relay nodes. Flooding Mechanism and On‐Demand Multicast Routing Protocol (ODMRP) are simulated and compared with both the basic and enhanced versions of the Topological Multicast Routing algorithm. The scenario evaluated considers one multicast transmitter and one, two, and three multicast receivers with various mobility patterns and transmission ranges. The behavior of 250 nodes is evaluated in terms of End to End Delay (EED), jitter, packet delivery ratio, and overhead. Results reveal that the enhanced version of ToMuRo performs better in terms of packet delivery ratio and jitter, while ODMRP performs better with respect to EED and Overhead.

ACS Style

R Aquino Santos; L A Villaseñor González; V Rangel Licea; A González Potes; M A García Ruiz; A Edwards Block. A Novel Topological Multicast Routing Algorithm (ToMuRo). Journal of Applied Research and Technology 2010, 8, 1 .

AMA Style

R Aquino Santos, L A Villaseñor González, V Rangel Licea, A González Potes, M A García Ruiz, A Edwards Block. A Novel Topological Multicast Routing Algorithm (ToMuRo). Journal of Applied Research and Technology. 2010; 8 (1):1.

Chicago/Turabian Style

R Aquino Santos; L A Villaseñor González; V Rangel Licea; A González Potes; M A García Ruiz; A Edwards Block. 2010. "A Novel Topological Multicast Routing Algorithm (ToMuRo)." Journal of Applied Research and Technology 8, no. 1: 1.

Journal article
Published: 01 October 2009 in Ingeniería Investigación y Tecnología
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ACS Style

Raul Aquino-Santos; Víctor Rangel-Licea; Luis A. Villasenor-Gonzalez; Arthur Edwards; Universidad Nacional Autónoma De México - Facultad De Ingeniería; Centro De Investigación Científica Y De Educación Superior De Ensenada; Universidad De Colima. Wireless Propagation Characteristics for Vehicular Ad-Hoc Networks in Motorway Environments. Ingeniería Investigación y Tecnología 2009, 10, 295 -302.

AMA Style

Raul Aquino-Santos, Víctor Rangel-Licea, Luis A. Villasenor-Gonzalez, Arthur Edwards, Universidad Nacional Autónoma De México - Facultad De Ingeniería, Centro De Investigación Científica Y De Educación Superior De Ensenada, Universidad De Colima. Wireless Propagation Characteristics for Vehicular Ad-Hoc Networks in Motorway Environments. Ingeniería Investigación y Tecnología. 2009; 10 (4):295-302.

Chicago/Turabian Style

Raul Aquino-Santos; Víctor Rangel-Licea; Luis A. Villasenor-Gonzalez; Arthur Edwards; Universidad Nacional Autónoma De México - Facultad De Ingeniería; Centro De Investigación Científica Y De Educación Superior De Ensenada; Universidad De Colima. 2009. "Wireless Propagation Characteristics for Vehicular Ad-Hoc Networks in Motorway Environments." Ingeniería Investigación y Tecnología 10, no. 4: 295-302.