�ݺ�ߣshows by User: WaldirJunior1

�ݺ�ߣshows by User: WaldirJunior1 / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: WaldirJunior1 / Fri, 27 Jul 2018 08:13:13 GMT �ݺ�ߣShare feed for �ݺ�ߣshows by User: WaldirJunior1 SV4D: The project, the reality observed and the challenges to be addressed /slideshow/sv4d-the-project-the-reality-observed-and-the-challenges-to-be-addressed/107696004 awcsafricomm2017final-180727081313
This presentation was given in the International Workshop on Affordable Wireless Connectivity Solutions (AWCS), on December 13th, 2017 in Lagos, Nigeria. ]]>
This presentation was given in the International Workshop on Affordable Wireless Connectivity Solutions (AWCS), on December 13th, 2017 in Lagos, Nigeria. ]]> Fri, 27 Jul 2018 08:13:13 GMT /slideshow/sv4d-the-project-the-reality-observed-and-the-challenges-to-be-addressed/107696004 WaldirJunior1@slideshare.net(WaldirJunior1) SV4D: The project, the reality observed and the challenges to be addressed WaldirJunior1 This presentation was given in the International Workshop on Affordable Wireless Connectivity Solutions (AWCS), on December 13th, 2017 in Lagos, Nigeria. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/awcsafricomm2017final-180727081313-thumbnail.jpg?width=120&height=120&fit=bounds" /> This presentation was given in the International Workshop on Affordable Wireless Connectivity Solutions (AWCS), on December 13th, 2017 in Lagos, Nigeria.

SV4D: The project, the reality observed and the challenges to be addressed from Waldir Moreira

]]> 112 2 https://cdn.slidesharecdn.com/ss_thumbnails/awcsafricomm2017final-180727081313-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 SV4D Architecture: Building Sustainable Villages for Developing Countries /slideshow/sv4d-architecture-building-sustainable-villages-for-developing-countries/107695588 africomm2017-180727080727
This presentation was given in the 9th EAI International Conference on e‐Infrastructure and e‐Services for Developing Countries (AFRICOMM 2017), on December 12th, 2017 in Lagos, Nigeria. ]]>
This presentation was given in the 9th EAI International Conference on e‐Infrastructure and e‐Services for Developing Countries (AFRICOMM 2017), on December 12th, 2017 in Lagos, Nigeria. ]]> Fri, 27 Jul 2018 08:07:27 GMT /slideshow/sv4d-architecture-building-sustainable-villages-for-developing-countries/107695588 WaldirJunior1@slideshare.net(WaldirJunior1) SV4D Architecture: Building Sustainable Villages for Developing Countries WaldirJunior1 This presentation was given in the 9th EAI International Conference on e‐Infrastructure and e‐Services for Developing Countries (AFRICOMM 2017), on December 12th, 2017 in Lagos, Nigeria. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/africomm2017-180727080727-thumbnail.jpg?width=120&height=120&fit=bounds" /> This presentation was given in the 9th EAI International Conference on e‐Infrastructure and e‐Services for Developing Countries (AFRICOMM 2017), on December 12th, 2017 in Lagos, Nigeria.

SV4D Architecture: Building Sustainable Villages for Developing Countries from Waldir Moreira

]]> 79 2 https://cdn.slidesharecdn.com/ss_thumbnails/africomm2017-180727080727-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Sustainable Villages for Development: Promoting Digital Inclusion /slideshow/susatainable-villages-for-development-promoting-digital-inclusion/80283562 6f-6461-170929091142
This presentation was given in the 8º Congresso Luso-Moçambicano de Engenharia (CLME 2017), on September 6th, 2017 in Maputo, Mozambique.]]>
This presentation was given in the 8º Congresso Luso-Moçambicano de Engenharia (CLME 2017), on September 6th, 2017 in Maputo, Mozambique.]]> Fri, 29 Sep 2017 09:11:42 GMT /slideshow/susatainable-villages-for-development-promoting-digital-inclusion/80283562 WaldirJunior1@slideshare.net(WaldirJunior1) Sustainable Villages for Development: Promoting Digital Inclusion WaldirJunior1 This presentation was given in the 8º Congresso Luso-Moçambicano de Engenharia (CLME 2017), on September 6th, 2017 in Maputo, Mozambique. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/6f-6461-170929091142-thumbnail.jpg?width=120&height=120&fit=bounds" /> This presentation was given in the 8º Congresso Luso-Moçambicano de Engenharia (CLME 2017), on September 6th, 2017 in Maputo, Mozambique.

Sustainable Villages for Development: Promoting Digital Inclusion from Waldir Moreira

]]> 53 2 https://cdn.slidesharecdn.com/ss_thumbnails/6f-6461-170929091142-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 CIMPL: A Public Safety Tool based on Opportunistic Communication /slideshow/cimpl-a-public-safety-tool-based-on-opportunistic-communication/64276510 cimpladhocnow2016-160722091024
Public safety plays an important role in what concerns the social welfare of citizens, thus impacting their quality of life. There are different mechanisms (e.g., police, firefighters) in place to help citizens feel safe, and the citizens themselves may have a more proactive posture (e.g., neighborhood watch). The proposed Android application, called CIMPL, targets the willingness of these model citizens in engaging in public safety efforts and the capabilities of their mobile personal devices to improve social welfare. CIMPL allows users to opportunistically exchange public safety content among their devices. This content, produced by users, identifies potential hazard situations, and is used to duly notify the authorities involved in the maintenance of public safety. This presentation was given in the 15th International Conference on Ad Hoc Networks and Wireless (AdHoc-Now 2016), on July 4th, 2016 in Lille, France.]]>
Public safety plays an important role in what concerns the social welfare of citizens, thus impacting their quality of life. There are different mechanisms (e.g., police, firefighters) in place to help citizens feel safe, and the citizens themselves may have a more proactive posture (e.g., neighborhood watch). The proposed Android application, called CIMPL, targets the willingness of these model citizens in engaging in public safety efforts and the capabilities of their mobile personal devices to improve social welfare. CIMPL allows users to opportunistically exchange public safety content among their devices. This content, produced by users, identifies potential hazard situations, and is used to duly notify the authorities involved in the maintenance of public safety. This presentation was given in the 15th International Conference on Ad Hoc Networks and Wireless (AdHoc-Now 2016), on July 4th, 2016 in Lille, France.]]> Fri, 22 Jul 2016 09:10:23 GMT /slideshow/cimpl-a-public-safety-tool-based-on-opportunistic-communication/64276510 WaldirJunior1@slideshare.net(WaldirJunior1) CIMPL: A Public Safety Tool based on Opportunistic Communication WaldirJunior1 Public safety plays an important role in what concerns the social welfare of citizens, thus impacting their quality of life. There are different mechanisms (e.g., police, firefighters) in place to help citizens feel safe, and the citizens themselves may have a more proactive posture (e.g., neighborhood watch). The proposed Android application, called CIMPL, targets the willingness of these model citizens in engaging in public safety efforts and the capabilities of their mobile personal devices to improve social welfare. CIMPL allows users to opportunistically exchange public safety content among their devices. This content, produced by users, identifies potential hazard situations, and is used to duly notify the authorities involved in the maintenance of public safety. This presentation was given in the 15th International Conference on Ad Hoc Networks and Wireless (AdHoc-Now 2016), on July 4th, 2016 in Lille, France. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/cimpladhocnow2016-160722091024-thumbnail.jpg?width=120&height=120&fit=bounds" /> Public safety plays an important role in what concerns the social welfare of citizens, thus impacting their quality of life. There are different mechanisms (e.g., police, firefighters) in place to help citizens feel safe, and the citizens themselves may have a more proactive posture (e.g., neighborhood watch). The proposed Android application, called CIMPL, targets the willingness of these model citizens in engaging in public safety efforts and the capabilities of their mobile personal devices to improve social welfare. CIMPL allows users to opportunistically exchange public safety content among their devices. This content, produced by users, identifies potential hazard situations, and is used to duly notify the authorities involved in the maintenance of public safety. This presentation was given in the 15th International Conference on Ad Hoc Networks and Wireless (AdHoc-Now 2016), on July 4th, 2016 in Lille, France.

CIMPL: A Public Safety Tool based on Opportunistic Communication from Waldir Moreira

]]> 168 2 https://cdn.slidesharecdn.com/ss_thumbnails/cimpladhocnow2016-160722091024-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Spatial Locality in Pocket Switched Networks /slideshow/spatial-locality-in-pocket-switched-networks/63299824 localityaoc2016presentation-160621155604
The current Internet design falls short in scenarios characterized by intermittent connectivity and absence of supporting infrastructure. Pocket switched networking allows communication between portable handheld user devices in such environments through the store-carry-forward paradigm. This involves storing data in device memory, exploiting user movement to physically transport the data, and forwarding through available short-range wireless interfaces. In this regard, user devices can be leveraged as data mules for point-to-point communication in two main scenarios: (i) conveying data between major infrastructures in urban areas (e.g., transporting sensor data to gateways in smart cities); and (ii) extending wireless coverage to provide connectivity in developing regions (e.g., bridging user devices and remote Internet access points). User movement in such scenarios exhibit spatial locality, which is the preference to a geographical location than others. This feature influences the data transfer opportunities that exist between different sets of users. This paper investigates the impact of locality on routing in pocket switched networks by: (i) evaluating the performance of existing routing strategies for point-to-point communication over different degrees of locality; and (ii) providing insights towards enhancing routing performance for realizing the aforementioned application scenarios through locality awareness. This presentation was given in the 10th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications 2016 (AOC 2016), on June 21st, 2016 in Coimbra, Portugal.]]>
The current Internet design falls short in scenarios characterized by intermittent connectivity and absence of supporting infrastructure. Pocket switched networking allows communication between portable handheld user devices in such environments through the store-carry-forward paradigm. This involves storing data in device memory, exploiting user movement to physically transport the data, and forwarding through available short-range wireless interfaces. In this regard, user devices can be leveraged as data mules for point-to-point communication in two main scenarios: (i) conveying data between major infrastructures in urban areas (e.g., transporting sensor data to gateways in smart cities); and (ii) extending wireless coverage to provide connectivity in developing regions (e.g., bridging user devices and remote Internet access points). User movement in such scenarios exhibit spatial locality, which is the preference to a geographical location than others. This feature influences the data transfer opportunities that exist between different sets of users. This paper investigates the impact of locality on routing in pocket switched networks by: (i) evaluating the performance of existing routing strategies for point-to-point communication over different degrees of locality; and (ii) providing insights towards enhancing routing performance for realizing the aforementioned application scenarios through locality awareness. This presentation was given in the 10th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications 2016 (AOC 2016), on June 21st, 2016 in Coimbra, Portugal.]]> Tue, 21 Jun 2016 15:56:04 GMT /slideshow/spatial-locality-in-pocket-switched-networks/63299824 WaldirJunior1@slideshare.net(WaldirJunior1) Spatial Locality in Pocket Switched Networks WaldirJunior1 The current Internet design falls short in scenarios characterized by intermittent connectivity and absence of supporting infrastructure. Pocket switched networking allows communication between portable handheld user devices in such environments through the store-carry-forward paradigm. This involves storing data in device memory, exploiting user movement to physically transport the data, and forwarding through available short-range wireless interfaces. In this regard, user devices can be leveraged as data mules for point-to-point communication in two main scenarios: (i) conveying data between major infrastructures in urban areas (e.g., transporting sensor data to gateways in smart cities); and (ii) extending wireless coverage to provide connectivity in developing regions (e.g., bridging user devices and remote Internet access points). User movement in such scenarios exhibit spatial locality, which is the preference to a geographical location than others. This feature influences the data transfer opportunities that exist between different sets of users. This paper investigates the impact of locality on routing in pocket switched networks by: (i) evaluating the performance of existing routing strategies for point-to-point communication over different degrees of locality; and (ii) providing insights towards enhancing routing performance for realizing the aforementioned application scenarios through locality awareness. This presentation was given in the 10th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications 2016 (AOC 2016), on June 21st, 2016 in Coimbra, Portugal. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/localityaoc2016presentation-160621155604-thumbnail.jpg?width=120&height=120&fit=bounds" /> The current Internet design falls short in scenarios characterized by intermittent connectivity and absence of supporting infrastructure. Pocket switched networking allows communication between portable handheld user devices in such environments through the store-carry-forward paradigm. This involves storing data in device memory, exploiting user movement to physically transport the data, and forwarding through available short-range wireless interfaces. In this regard, user devices can be leveraged as data mules for point-to-point communication in two main scenarios: (i) conveying data between major infrastructures in urban areas (e.g., transporting sensor data to gateways in smart cities); and (ii) extending wireless coverage to provide connectivity in developing regions (e.g., bridging user devices and remote Internet access points). User movement in such scenarios exhibit spatial locality, which is the preference to a geographical location than others. This feature influences the data transfer opportunities that exist between different sets of users. This paper investigates the impact of locality on routing in pocket switched networks by: (i) evaluating the performance of existing routing strategies for point-to-point communication over different degrees of locality; and (ii) providing insights towards enhancing routing performance for realizing the aforementioned application scenarios through locality awareness. This presentation was given in the 10th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications 2016 (AOC 2016), on June 21st, 2016 in Coimbra, Portugal.

Spatial Locality in Pocket Switched Networks from Waldir Moreira

]]> 121 4 https://cdn.slidesharecdn.com/ss_thumbnails/localityaoc2016presentation-160621155604-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Computer Networking meets Social Psychology /slideshow/dia-dasorganizacoes/48051135 diadasorganizacoes-150512142139-lva1-app6891
An attempt to show what happens when computer networking, more specifically opportunistic networking, meets the social psychology discipline. This presentation was given in the II Encontro Psicologia Social e das Organizações (ULHT), on May 12th, 2015 in Lisbon, Portugal.]]>
An attempt to show what happens when computer networking, more specifically opportunistic networking, meets the social psychology discipline. This presentation was given in the II Encontro Psicologia Social e das Organizações (ULHT), on May 12th, 2015 in Lisbon, Portugal.]]> Tue, 12 May 2015 14:21:39 GMT /slideshow/dia-dasorganizacoes/48051135 WaldirJunior1@slideshare.net(WaldirJunior1) Computer Networking meets Social Psychology WaldirJunior1 An attempt to show what happens when computer networking, more specifically opportunistic networking, meets the social psychology discipline. This presentation was given in the II Encontro Psicologia Social e das Organizações (ULHT), on May 12th, 2015 in Lisbon, Portugal. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/diadasorganizacoes-150512142139-lva1-app6891-thumbnail.jpg?width=120&height=120&fit=bounds" /> An attempt to show what happens when computer networking, more specifically opportunistic networking, meets the social psychology discipline. This presentation was given in the II Encontro Psicologia Social e das Organizações (ULHT), on May 12th, 2015 in Lisbon, Portugal.

Computer Networking meets Social Psychology from Waldir Moreira

]]> 461 2 https://cdn.slidesharecdn.com/ss_thumbnails/diadasorganizacoes-150512142139-lva1-app6891-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Dynamics of Social-aware Pervasive Networks /slideshow/dynamics-of-socialaware-pervasive-networks/46380206 ieeepermoby2015-150327173209-conversion-gate01
Social-aware pervasive networks consider the users' social behavior to overcome intermittent end-to-end connectivity, inherent to this type of networking: forwarding decisions consider local knowledge about the behavior of nodes to predict future encounters. Complex Network Analysis (CNA) has been used to support contact prediction, by aggregating connectivity graphs into less volatile social graphs. Nevertheless, the structure of such graphs is rather dynamic, since users' social behavior and interactions vary throughout their daily routines and according to their mobility. Consequently, aggregation algorithms should be able to create social graphs that reflect the resulting dynamic behavior of people. This paper discusses on human behavior-aware aggregation to allow the creation of graphs based on social variations observed in people's daily routines. By focusing on the dynamics of the network, we show that social graphs, reflecting different stages of human social behavior and mobility, are able to take advantage of the potential small-world properties of networks in different time frames, improving the performance of social-aware opportunistic forwarding. This presentation was given in the 4th IEEE PerCom Workshop on the Impact of Human Mobility in Pervasive Systems and Applications (PerMoby 2015), on March 27th, 2015 in St. Louis, USA.]]>
Social-aware pervasive networks consider the users' social behavior to overcome intermittent end-to-end connectivity, inherent to this type of networking: forwarding decisions consider local knowledge about the behavior of nodes to predict future encounters. Complex Network Analysis (CNA) has been used to support contact prediction, by aggregating connectivity graphs into less volatile social graphs. Nevertheless, the structure of such graphs is rather dynamic, since users' social behavior and interactions vary throughout their daily routines and according to their mobility. Consequently, aggregation algorithms should be able to create social graphs that reflect the resulting dynamic behavior of people. This paper discusses on human behavior-aware aggregation to allow the creation of graphs based on social variations observed in people's daily routines. By focusing on the dynamics of the network, we show that social graphs, reflecting different stages of human social behavior and mobility, are able to take advantage of the potential small-world properties of networks in different time frames, improving the performance of social-aware opportunistic forwarding. This presentation was given in the 4th IEEE PerCom Workshop on the Impact of Human Mobility in Pervasive Systems and Applications (PerMoby 2015), on March 27th, 2015 in St. Louis, USA.]]> Fri, 27 Mar 2015 17:32:09 GMT /slideshow/dynamics-of-socialaware-pervasive-networks/46380206 WaldirJunior1@slideshare.net(WaldirJunior1) Dynamics of Social-aware Pervasive Networks WaldirJunior1 Social-aware pervasive networks consider the users' social behavior to overcome intermittent end-to-end connectivity, inherent to this type of networking: forwarding decisions consider local knowledge about the behavior of nodes to predict future encounters. Complex Network Analysis (CNA) has been used to support contact prediction, by aggregating connectivity graphs into less volatile social graphs. Nevertheless, the structure of such graphs is rather dynamic, since users' social behavior and interactions vary throughout their daily routines and according to their mobility. Consequently, aggregation algorithms should be able to create social graphs that reflect the resulting dynamic behavior of people. This paper discusses on human behavior-aware aggregation to allow the creation of graphs based on social variations observed in people's daily routines. By focusing on the dynamics of the network, we show that social graphs, reflecting different stages of human social behavior and mobility, are able to take advantage of the potential small-world properties of networks in different time frames, improving the performance of social-aware opportunistic forwarding. This presentation was given in the 4th IEEE PerCom Workshop on the Impact of Human Mobility in Pervasive Systems and Applications (PerMoby 2015), on March 27th, 2015 in St. Louis, USA. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/ieeepermoby2015-150327173209-conversion-gate01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Social-aware pervasive networks consider the users' social behavior to overcome intermittent end-to-end connectivity, inherent to this type of networking: forwarding decisions consider local knowledge about the behavior of nodes to predict future encounters. Complex Network Analysis (CNA) has been used to support contact prediction, by aggregating connectivity graphs into less volatile social graphs. Nevertheless, the structure of such graphs is rather dynamic, since users' social behavior and interactions vary throughout their daily routines and according to their mobility. Consequently, aggregation algorithms should be able to create social graphs that reflect the resulting dynamic behavior of people. This paper discusses on human behavior-aware aggregation to allow the creation of graphs based on social variations observed in people's daily routines. By focusing on the dynamics of the network, we show that social graphs, reflecting different stages of human social behavior and mobility, are able to take advantage of the potential small-world properties of networks in different time frames, improving the performance of social-aware opportunistic forwarding. This presentation was given in the 4th IEEE PerCom Workshop on the Impact of Human Mobility in Pervasive Systems and Applications (PerMoby 2015), on March 27th, 2015 in St. Louis, USA.

Dynamics of Social-aware Pervasive Networks from Waldir Moreira

]]> 320 2 https://cdn.slidesharecdn.com/ss_thumbnails/ieeepermoby2015-150327173209-conversion-gate01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Crowd Assisted Approach for Pervasive Opportunistic Sensing /slideshow/ieee-casper-2015/46380155 ieeecasper2015-150327172848-conversion-gate01
The advances in the areas of microelectronics and telecommunications are helping to materialize the vision of a pervasive computing model through the incorporation of sensors and communication interfaces into objects of everyday life. In recent years, there has been a growing interest in crowd assisted sensing applications, in which people serve as the building block that can be exploited to offer pervasive opportunistic sensing at scale. This paper describes a new crowd assisted pervasive opportunistic sensing framework able of exploiting people's mobility to overcome the coverage limitation of sensors and the diversity of devices, expanding the scale of sensing applications. This presentation was given in the 2nd IEEE PerCom Workshop on Crowd Assisted Sensing Pervasive Systems and Communications (CASPer 2015), on March 27th, 2015 in St. Louis, USA.]]>
The advances in the areas of microelectronics and telecommunications are helping to materialize the vision of a pervasive computing model through the incorporation of sensors and communication interfaces into objects of everyday life. In recent years, there has been a growing interest in crowd assisted sensing applications, in which people serve as the building block that can be exploited to offer pervasive opportunistic sensing at scale. This paper describes a new crowd assisted pervasive opportunistic sensing framework able of exploiting people's mobility to overcome the coverage limitation of sensors and the diversity of devices, expanding the scale of sensing applications. This presentation was given in the 2nd IEEE PerCom Workshop on Crowd Assisted Sensing Pervasive Systems and Communications (CASPer 2015), on March 27th, 2015 in St. Louis, USA.]]> Fri, 27 Mar 2015 17:28:47 GMT /slideshow/ieee-casper-2015/46380155 WaldirJunior1@slideshare.net(WaldirJunior1) Crowd Assisted Approach for Pervasive Opportunistic Sensing WaldirJunior1 The advances in the areas of microelectronics and telecommunications are helping to materialize the vision of a pervasive computing model through the incorporation of sensors and communication interfaces into objects of everyday life. In recent years, there has been a growing interest in crowd assisted sensing applications, in which people serve as the building block that can be exploited to offer pervasive opportunistic sensing at scale. This paper describes a new crowd assisted pervasive opportunistic sensing framework able of exploiting people's mobility to overcome the coverage limitation of sensors and the diversity of devices, expanding the scale of sensing applications. This presentation was given in the 2nd IEEE PerCom Workshop on Crowd Assisted Sensing Pervasive Systems and Communications (CASPer 2015), on March 27th, 2015 in St. Louis, USA. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/ieeecasper2015-150327172848-conversion-gate01-thumbnail.jpg?width=120&height=120&fit=bounds" /> The advances in the areas of microelectronics and telecommunications are helping to materialize the vision of a pervasive computing model through the incorporation of sensors and communication interfaces into objects of everyday life. In recent years, there has been a growing interest in crowd assisted sensing applications, in which people serve as the building block that can be exploited to offer pervasive opportunistic sensing at scale. This paper describes a new crowd assisted pervasive opportunistic sensing framework able of exploiting people's mobility to overcome the coverage limitation of sensors and the diversity of devices, expanding the scale of sensing applications. This presentation was given in the 2nd IEEE PerCom Workshop on Crowd Assisted Sensing Pervasive Systems and Communications (CASPer 2015), on March 27th, 2015 in St. Louis, USA.

Crowd Assisted Approach for Pervasive Opportunistic Sensing from Waldir Moreira

]]> 476 1 https://cdn.slidesharecdn.com/ss_thumbnails/ieeecasper2015-150327172848-conversion-gate01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Trust in a networked world: Problems and measures /slideshow/trust-in-a-networked-world-problems-and-measures/45424876 cbrainmoreirabrito15-150304082211-conversion-gate01
Humans are motivated to form trustworthy social relations, but also by self-interest. Trust can thus be threatened by defection, fraud, or exploitation. Trust is based both on direct experience and on social reputation. Human societies have evolved complex systems of reputation management to monitor and punish threats, from gossip and ostracism to police and legal systems. Online reputation management systems are developed to deal with a larger n and a greater anonymity of agents (individuals or devices). Trust can be specific to certain types of relations (e.g. intimate, market transactions, fairness or impartiality of an authority) or holistic (general trust in an agent). It can also focus on specific agents or on a social system as a whole, with multiple agents (e.g. a small group, the stock-market, an online peer-to-peer system). We will review and discuss concepts and measures of trust with regard to these different levels in the sociological and psychological literature, on the one hand, and in internet science, on the other, with a view to developing a common view with practical metrics. This presentation was given by Prof. Dr. Brito and myself in the COPELABS Brainstorming meeting, on February 24th, 2015.]]>
Humans are motivated to form trustworthy social relations, but also by self-interest. Trust can thus be threatened by defection, fraud, or exploitation. Trust is based both on direct experience and on social reputation. Human societies have evolved complex systems of reputation management to monitor and punish threats, from gossip and ostracism to police and legal systems. Online reputation management systems are developed to deal with a larger n and a greater anonymity of agents (individuals or devices). Trust can be specific to certain types of relations (e.g. intimate, market transactions, fairness or impartiality of an authority) or holistic (general trust in an agent). It can also focus on specific agents or on a social system as a whole, with multiple agents (e.g. a small group, the stock-market, an online peer-to-peer system). We will review and discuss concepts and measures of trust with regard to these different levels in the sociological and psychological literature, on the one hand, and in internet science, on the other, with a view to developing a common view with practical metrics. This presentation was given by Prof. Dr. Brito and myself in the COPELABS Brainstorming meeting, on February 24th, 2015.]]> Wed, 04 Mar 2015 08:22:11 GMT /slideshow/trust-in-a-networked-world-problems-and-measures/45424876 WaldirJunior1@slideshare.net(WaldirJunior1) Trust in a networked world: Problems and measures WaldirJunior1 Humans are motivated to form trustworthy social relations, but also by self-interest. Trust can thus be threatened by defection, fraud, or exploitation. Trust is based both on direct experience and on social reputation. Human societies have evolved complex systems of reputation management to monitor and punish threats, from gossip and ostracism to police and legal systems. Online reputation management systems are developed to deal with a larger n and a greater anonymity of agents (individuals or devices). Trust can be specific to certain types of relations (e.g. intimate, market transactions, fairness or impartiality of an authority) or holistic (general trust in an agent). It can also focus on specific agents or on a social system as a whole, with multiple agents (e.g. a small group, the stock-market, an online peer-to-peer system). We will review and discuss concepts and measures of trust with regard to these different levels in the sociological and psychological literature, on the one hand, and in internet science, on the other, with a view to developing a common view with practical metrics. This presentation was given by Prof. Dr. Brito and myself in the COPELABS Brainstorming meeting, on February 24th, 2015. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/cbrainmoreirabrito15-150304082211-conversion-gate01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Humans are motivated to form trustworthy social relations, but also by self-interest. Trust can thus be threatened by defection, fraud, or exploitation. Trust is based both on direct experience and on social reputation. Human societies have evolved complex systems of reputation management to monitor and punish threats, from gossip and ostracism to police and legal systems. Online reputation management systems are developed to deal with a larger n and a greater anonymity of agents (individuals or devices). Trust can be specific to certain types of relations (e.g. intimate, market transactions, fairness or impartiality of an authority) or holistic (general trust in an agent). It can also focus on specific agents or on a social system as a whole, with multiple agents (e.g. a small group, the stock-market, an online peer-to-peer system). We will review and discuss concepts and measures of trust with regard to these different levels in the sociological and psychological literature, on the one hand, and in internet science, on the other, with a view to developing a common view with practical metrics. This presentation was given by Prof. Dr. Brito and myself in the COPELABS Brainstorming meeting, on February 24th, 2015.

Trust in a networked world: Problems and measures from Waldir Moreira

]]> 275 2 https://cdn.slidesharecdn.com/ss_thumbnails/cbrainmoreirabrito15-150304082211-conversion-gate01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Social-aware Opportunistic Routing /slideshow/socialaware-opportunistic-routing/39767716 thesispresentationfinal-141001142626-phpapp02
The increased capabilities (e.g., processing, storage) of portable devices along with the constant need of users to retrieve and send information have introduced a new form of communication. Users can seamlessly exchange data by means of opportunistic contacts among them and this is what characterizes the opportunistic networks (OppNets). OppNets allow users to communicate even when an end-to-end path may not exist between them. A trend observed in the last year of opportunistic routing refers to considering social similarity metrics to improve the exchange of data. Social relationships, shared interests, and popularity are examples of such metrics that have been employed successfully: as users interact based on relationships and interests, this information can be used to decide on the best next forwarders of information. This Thesis work combines the features of today's devices found in the regular urban environment with the current social-awareness trend in the context of opportunistic routing. To achieve this goal, this work was divided into different tasks that map to a set of specific objectives, leading to the following contributions: i) an up-to-date opportunistic routing taxonomy; ii) a universal evaluation framework that aids in devising and testing new routing proposals; iii) three social-aware utility functions that consider the dynamic user behavior and can be easily incorporated to other routing proposals; iv) two opportunistic routing proposals based on the users' daily routines and on the content traversing the network and interest of users in such content; and v) a structure analysis of the social-based network formed based on the approaches devised in this work. This presentation was given as part of my PhD defense to the Universities of Minho, Aveiro, and Porto, on September 29th, 2014 in University of Aveiro. For a copy of the thesis: http://copelabs.ulusofona.pt/scicommons/index.php/publications/show/732 ]]>
The increased capabilities (e.g., processing, storage) of portable devices along with the constant need of users to retrieve and send information have introduced a new form of communication. Users can seamlessly exchange data by means of opportunistic contacts among them and this is what characterizes the opportunistic networks (OppNets). OppNets allow users to communicate even when an end-to-end path may not exist between them. A trend observed in the last year of opportunistic routing refers to considering social similarity metrics to improve the exchange of data. Social relationships, shared interests, and popularity are examples of such metrics that have been employed successfully: as users interact based on relationships and interests, this information can be used to decide on the best next forwarders of information. This Thesis work combines the features of today's devices found in the regular urban environment with the current social-awareness trend in the context of opportunistic routing. To achieve this goal, this work was divided into different tasks that map to a set of specific objectives, leading to the following contributions: i) an up-to-date opportunistic routing taxonomy; ii) a universal evaluation framework that aids in devising and testing new routing proposals; iii) three social-aware utility functions that consider the dynamic user behavior and can be easily incorporated to other routing proposals; iv) two opportunistic routing proposals based on the users' daily routines and on the content traversing the network and interest of users in such content; and v) a structure analysis of the social-based network formed based on the approaches devised in this work. This presentation was given as part of my PhD defense to the Universities of Minho, Aveiro, and Porto, on September 29th, 2014 in University of Aveiro. For a copy of the thesis: http://copelabs.ulusofona.pt/scicommons/index.php/publications/show/732 ]]> Wed, 01 Oct 2014 14:26:26 GMT /slideshow/socialaware-opportunistic-routing/39767716 WaldirJunior1@slideshare.net(WaldirJunior1) Social-aware Opportunistic Routing WaldirJunior1 The increased capabilities (e.g., processing, storage) of portable devices along with the constant need of users to retrieve and send information have introduced a new form of communication. Users can seamlessly exchange data by means of opportunistic contacts among them and this is what characterizes the opportunistic networks (OppNets). OppNets allow users to communicate even when an end-to-end path may not exist between them. A trend observed in the last year of opportunistic routing refers to considering social similarity metrics to improve the exchange of data. Social relationships, shared interests, and popularity are examples of such metrics that have been employed successfully: as users interact based on relationships and interests, this information can be used to decide on the best next forwarders of information. This Thesis work combines the features of today's devices found in the regular urban environment with the current social-awareness trend in the context of opportunistic routing. To achieve this goal, this work was divided into different tasks that map to a set of specific objectives, leading to the following contributions: i) an up-to-date opportunistic routing taxonomy; ii) a universal evaluation framework that aids in devising and testing new routing proposals; iii) three social-aware utility functions that consider the dynamic user behavior and can be easily incorporated to other routing proposals; iv) two opportunistic routing proposals based on the users' daily routines and on the content traversing the network and interest of users in such content; and v) a structure analysis of the social-based network formed based on the approaches devised in this work. This presentation was given as part of my PhD defense to the Universities of Minho, Aveiro, and Porto, on September 29th, 2014 in University of Aveiro. For a copy of the thesis: http://copelabs.ulusofona.pt/scicommons/index.php/publications/show/732 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/thesispresentationfinal-141001142626-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> The increased capabilities (e.g., processing, storage) of portable devices along with the constant need of users to retrieve and send information have introduced a new form of communication. Users can seamlessly exchange data by means of opportunistic contacts among them and this is what characterizes the opportunistic networks (OppNets). OppNets allow users to communicate even when an end-to-end path may not exist between them. A trend observed in the last year of opportunistic routing refers to considering social similarity metrics to improve the exchange of data. Social relationships, shared interests, and popularity are examples of such metrics that have been employed successfully: as users interact based on relationships and interests, this information can be used to decide on the best next forwarders of information. This Thesis work combines the features of today's devices found in the regular urban environment with the current social-awareness trend in the context of opportunistic routing. To achieve this goal, this work was divided into different tasks that map to a set of specific objectives, leading to the following contributions: i) an up-to-date opportunistic routing taxonomy; ii) a universal evaluation framework that aids in devising and testing new routing proposals; iii) three social-aware utility functions that consider the dynamic user behavior and can be easily incorporated to other routing proposals; iv) two opportunistic routing proposals based on the users' daily routines and on the content traversing the network and interest of users in such content; and v) a structure analysis of the social-based network formed based on the approaches devised in this work. This presentation was given as part of my PhD defense to the Universities of Minho, Aveiro, and Porto, on September 29th, 2014 in University of Aveiro. For a copy of the thesis: http://copelabs.ulusofona.pt/scicommons/index.php/publications/show/732

Social-aware Opportunistic Routing from Waldir Moreira

]]> 794 7 https://cdn.slidesharecdn.com/ss_thumbnails/thesispresentationfinal-141001142626-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Social-aware Forwarding in Opportunistic Wireless Networks: Content Awareness or Obliviousness? /slideshow/aoc2014/35996766 aoc2014-140617215901-phpapp01
Information-Centric Networking (ICN) has gained increasing attention from the research community as it is able to improve content dissemination by releasing the dependency on content location. With the current host-based Internet architecture, networking faces limitations in dynamic scenarios, due mostly to host mobility. The ICN paradigm mitigates such problems by releasing the need to have an end-to-end transport session established during the life time of the data transfer. Moreover, the ICN concept solves the mismatch between the Internet architecture and the way users would like to use it: currently a user needs to know the topological location of the hosts involved in the communication when he/she just wants to get the data, independently of its location. Most of the research efforts aim to come up with a stable ICN architecture in fixed networks, with few examples in ad-hoc and vehicular networks. However, the Internet is becoming more pervasive with powerful personal mobile devices that allow users to form dynamic networks in which content may be exchanged at all times and with low cost. Such pervasive wireless networks suffer with different levels of disruption given user mobility, physical obstacles, lack of cooperation, intermittent connectivity, among others. This paper discusses the combination of content knowledge (e.g., type and interested parties) and social awareness within opportunistic networking as to drive the deployment of ICN solutions in disruptive networking scenarios. With this goal in mind, we go over few examples of social-aware content-based opportunistic networking proposals that consider social awareness to allow content dissemination independently of the level of network disruption. To show how much content knowledge can improve social-based solutions, we illustrate by means of simulation some content-oblivious/oriented proposals in scenarios based on synthetic mobility patterns and real human traces. This presentation was given in the 8th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2014), on June 16th, 2014 in Sydney, Australia.]]>
Information-Centric Networking (ICN) has gained increasing attention from the research community as it is able to improve content dissemination by releasing the dependency on content location. With the current host-based Internet architecture, networking faces limitations in dynamic scenarios, due mostly to host mobility. The ICN paradigm mitigates such problems by releasing the need to have an end-to-end transport session established during the life time of the data transfer. Moreover, the ICN concept solves the mismatch between the Internet architecture and the way users would like to use it: currently a user needs to know the topological location of the hosts involved in the communication when he/she just wants to get the data, independently of its location. Most of the research efforts aim to come up with a stable ICN architecture in fixed networks, with few examples in ad-hoc and vehicular networks. However, the Internet is becoming more pervasive with powerful personal mobile devices that allow users to form dynamic networks in which content may be exchanged at all times and with low cost. Such pervasive wireless networks suffer with different levels of disruption given user mobility, physical obstacles, lack of cooperation, intermittent connectivity, among others. This paper discusses the combination of content knowledge (e.g., type and interested parties) and social awareness within opportunistic networking as to drive the deployment of ICN solutions in disruptive networking scenarios. With this goal in mind, we go over few examples of social-aware content-based opportunistic networking proposals that consider social awareness to allow content dissemination independently of the level of network disruption. To show how much content knowledge can improve social-based solutions, we illustrate by means of simulation some content-oblivious/oriented proposals in scenarios based on synthetic mobility patterns and real human traces. This presentation was given in the 8th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2014), on June 16th, 2014 in Sydney, Australia.]]> Tue, 17 Jun 2014 21:59:01 GMT /slideshow/aoc2014/35996766 WaldirJunior1@slideshare.net(WaldirJunior1) Social-aware Forwarding in Opportunistic Wireless Networks: Content Awareness or Obliviousness? WaldirJunior1 Information-Centric Networking (ICN) has gained increasing attention from the research community as it is able to improve content dissemination by releasing the dependency on content location. With the current host-based Internet architecture, networking faces limitations in dynamic scenarios, due mostly to host mobility. The ICN paradigm mitigates such problems by releasing the need to have an end-to-end transport session established during the life time of the data transfer. Moreover, the ICN concept solves the mismatch between the Internet architecture and the way users would like to use it: currently a user needs to know the topological location of the hosts involved in the communication when he/she just wants to get the data, independently of its location. Most of the research efforts aim to come up with a stable ICN architecture in fixed networks, with few examples in ad-hoc and vehicular networks. However, the Internet is becoming more pervasive with powerful personal mobile devices that allow users to form dynamic networks in which content may be exchanged at all times and with low cost. Such pervasive wireless networks suffer with different levels of disruption given user mobility, physical obstacles, lack of cooperation, intermittent connectivity, among others. This paper discusses the combination of content knowledge (e.g., type and interested parties) and social awareness within opportunistic networking as to drive the deployment of ICN solutions in disruptive networking scenarios. With this goal in mind, we go over few examples of social-aware content-based opportunistic networking proposals that consider social awareness to allow content dissemination independently of the level of network disruption. To show how much content knowledge can improve social-based solutions, we illustrate by means of simulation some content-oblivious/oriented proposals in scenarios based on synthetic mobility patterns and real human traces. This presentation was given in the 8th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2014), on June 16th, 2014 in Sydney, Australia. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/aoc2014-140617215901-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Information-Centric Networking (ICN) has gained increasing attention from the research community as it is able to improve content dissemination by releasing the dependency on content location. With the current host-based Internet architecture, networking faces limitations in dynamic scenarios, due mostly to host mobility. The ICN paradigm mitigates such problems by releasing the need to have an end-to-end transport session established during the life time of the data transfer. Moreover, the ICN concept solves the mismatch between the Internet architecture and the way users would like to use it: currently a user needs to know the topological location of the hosts involved in the communication when he/she just wants to get the data, independently of its location. Most of the research efforts aim to come up with a stable ICN architecture in fixed networks, with few examples in ad-hoc and vehicular networks. However, the Internet is becoming more pervasive with powerful personal mobile devices that allow users to form dynamic networks in which content may be exchanged at all times and with low cost. Such pervasive wireless networks suffer with different levels of disruption given user mobility, physical obstacles, lack of cooperation, intermittent connectivity, among others. This paper discusses the combination of content knowledge (e.g., type and interested parties) and social awareness within opportunistic networking as to drive the deployment of ICN solutions in disruptive networking scenarios. With this goal in mind, we go over few examples of social-aware content-based opportunistic networking proposals that consider social awareness to allow content dissemination independently of the level of network disruption. To show how much content knowledge can improve social-based solutions, we illustrate by means of simulation some content-oblivious/oriented proposals in scenarios based on synthetic mobility patterns and real human traces. This presentation was given in the 8th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2014), on June 16th, 2014 in Sydney, Australia.

Social-aware Forwarding in Opportunistic Wireless Networks: Content Awareness or Obliviousness? from Waldir Moreira

]]> 585 4 https://cdn.slidesharecdn.com/ss_thumbnails/aoc2014-140617215901-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Social-aware Opportunistic Routing Protocol based on User's Interactions and Interests /slideshow/2013-1016adhocnetsscorp/32238205 2013-10-16-adhocnets-scorp-140312141126-phpapp02
Nowadays, routing proposals must deal with a panoply of heterogeneous devices, intermittent connectivity, and the users' constant need for communication, even in rather challenging networking scenarios. Thus, we propose a Social-aware Content-based Opportunistic Routing Protocol, SCORP, that considers the users' social interaction and their interests to improve data delivery in urban, dense scenarios. Through simulations, using synthetic mobility and human traces scenarios, we compare the performance of our solution against other two social-aware solutions, dLife and Bubble Rap, and the social-oblivious Spray and Wait, in order to show that the combination of social awareness and content knowledge can be benecial when disseminating data in challenging networks This presentation was given on my behalf by Dr. Mendes in the 5th International Conference on Ad Hoc Networks (ADHOCNETS 2013), on October 16th, 2013 in Barcelona, Spain.]]>
Nowadays, routing proposals must deal with a panoply of heterogeneous devices, intermittent connectivity, and the users' constant need for communication, even in rather challenging networking scenarios. Thus, we propose a Social-aware Content-based Opportunistic Routing Protocol, SCORP, that considers the users' social interaction and their interests to improve data delivery in urban, dense scenarios. Through simulations, using synthetic mobility and human traces scenarios, we compare the performance of our solution against other two social-aware solutions, dLife and Bubble Rap, and the social-oblivious Spray and Wait, in order to show that the combination of social awareness and content knowledge can be benecial when disseminating data in challenging networks This presentation was given on my behalf by Dr. Mendes in the 5th International Conference on Ad Hoc Networks (ADHOCNETS 2013), on October 16th, 2013 in Barcelona, Spain.]]> Wed, 12 Mar 2014 14:11:26 GMT /slideshow/2013-1016adhocnetsscorp/32238205 WaldirJunior1@slideshare.net(WaldirJunior1) Social-aware Opportunistic Routing Protocol based on User's Interactions and Interests WaldirJunior1 Nowadays, routing proposals must deal with a panoply of heterogeneous devices, intermittent connectivity, and the users' constant need for communication, even in rather challenging networking scenarios. Thus, we propose a Social-aware Content-based Opportunistic Routing Protocol, SCORP, that considers the users' social interaction and their interests to improve data delivery in urban, dense scenarios. Through simulations, using synthetic mobility and human traces scenarios, we compare the performance of our solution against other two social-aware solutions, dLife and Bubble Rap, and the social-oblivious Spray and Wait, in order to show that the combination of social awareness and content knowledge can be bene�cial when disseminating data in challenging networks This presentation was given on my behalf by Dr. Mendes in the 5th International Conference on Ad Hoc Networks (ADHOCNETS 2013), on October 16th, 2013 in Barcelona, Spain. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/2013-10-16-adhocnets-scorp-140312141126-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Nowadays, routing proposals must deal with a panoply of heterogeneous devices, intermittent connectivity, and the users' constant need for communication, even in rather challenging networking scenarios. Thus, we propose a Social-aware Content-based Opportunistic Routing Protocol, SCORP, that considers the users' social interaction and their interests to improve data delivery in urban, dense scenarios. Through simulations, using synthetic mobility and human traces scenarios, we compare the performance of our solution against other two social-aware solutions, dLife and Bubble Rap, and the social-oblivious Spray and Wait, in order to show that the combination of social awareness and content knowledge can be bene�cial when disseminating data in challenging networks This presentation was given on my behalf by Dr. Mendes in the 5th International Conference on Ad Hoc Networks (ADHOCNETS 2013), on October 16th, 2013 in Barcelona, Spain.

Social-aware Opportunistic Routing Protocol based on User's Interactions and Interests from Waldir Moreira

]]> 729 3 https://cdn.slidesharecdn.com/ss_thumbnails/2013-10-16-adhocnets-scorp-140312141126-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation Black http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 SocialDTN: a DTN Implementation for Digital and Social Inclusion /slideshow/social-dtn-presentation/31473418 socialdtnpresentation-140221041804-phpapp01
SocialDTN is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces this DTN implementation for digital and social inclusion. This presentation was given on my behalf by Dr. Cerqueira in the ACM MobiCom Workshop on Lowest Cost Denominator Networking for Universal Access (LCDNet 2013), on September 30th, 2013 in Miami, USA.]]>
SocialDTN is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces this DTN implementation for digital and social inclusion. This presentation was given on my behalf by Dr. Cerqueira in the ACM MobiCom Workshop on Lowest Cost Denominator Networking for Universal Access (LCDNet 2013), on September 30th, 2013 in Miami, USA.]]> Fri, 21 Feb 2014 04:18:04 GMT /slideshow/social-dtn-presentation/31473418 WaldirJunior1@slideshare.net(WaldirJunior1) SocialDTN: a DTN Implementation for Digital and Social Inclusion WaldirJunior1 SocialDTN is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces this DTN implementation for digital and social inclusion. This presentation was given on my behalf by Dr. Cerqueira in the ACM MobiCom Workshop on Lowest Cost Denominator Networking for Universal Access (LCDNet 2013), on September 30th, 2013 in Miami, USA. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/socialdtnpresentation-140221041804-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> SocialDTN is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces this DTN implementation for digital and social inclusion. This presentation was given on my behalf by Dr. Cerqueira in the ACM MobiCom Workshop on Lowest Cost Denominator Networking for Universal Access (LCDNet 2013), on September 30th, 2013 in Miami, USA.

SocialDTN: a DTN Implementation for Digital and Social Inclusion from Waldir Moreira

]]> 582 5 https://cdn.slidesharecdn.com/ss_thumbnails/socialdtnpresentation-140221041804-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 dLife: Opportunistic Routing based on Users Daily Life Routine /slideshow/dlife-opportunistic-routing-based-on-users-daily-life-routine/21218025 winemo2013v4-130515143725-phpapp01
The social-aware opportunistic routing protocol dLife is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces dLife and its functioning, and shows how it fits in the context of this project. This presentation was given in the 7th WiNeMo meeting on May 14th, 2013 at University of Coimbra in Coimbra, Portugal.]]>
The social-aware opportunistic routing protocol dLife is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces dLife and its functioning, and shows how it fits in the context of this project. This presentation was given in the 7th WiNeMo meeting on May 14th, 2013 at University of Coimbra in Coimbra, Portugal.]]> Wed, 15 May 2013 14:37:25 GMT /slideshow/dlife-opportunistic-routing-based-on-users-daily-life-routine/21218025 WaldirJunior1@slideshare.net(WaldirJunior1) dLife: Opportunistic Routing based on Users Daily Life Routine WaldirJunior1 The social-aware opportunistic routing protocol dLife is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces dLife and its functioning, and shows how it fits in the context of this project. This presentation was given in the 7th WiNeMo meeting on May 14th, 2013 at University of Coimbra in Coimbra, Portugal. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/winemo2013v4-130515143725-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> The social-aware opportunistic routing protocol dLife is also part of the DTN-Amazon project fruit of a partnership between SITILabs and GERCOM/UFPA. This presentation introduces dLife and its functioning, and shows how it fits in the context of this project. This presentation was given in the 7th WiNeMo meeting on May 14th, 2013 at University of Coimbra in Coimbra, Portugal.

dLife: Opportunistic Routing based on Users Daily Life Routine from Waldir Moreira

]]> 1823 2 https://cdn.slidesharecdn.com/ss_thumbnails/winemo2013v4-130515143725-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 DTN-Amazon: Digital/Social Inclusion in the Amazon Region /WaldirJunior1/dtnamazon-digitalsocial-inclusion-in-the-amazon-region tedweb2013-130416125730-phpapp02
DTN-Amazon is a project developed in a partnership between SITILabs and Federal University of Para (UFPA/Brazil) since 2011. The main goal is to promote digital/social inclusion in the Amazon region by bringing Internet access to remote, infrastructureless locations such as the the riverside communities nearby UFPA. The project has implemented middleware solutions that are actually being experimented in a 7-node testbed at UFPA. This presentation was given in TecWeb 2013 on April 16th, 2013 at University Lusofona in Lisbon, Portugal.]]>
DTN-Amazon is a project developed in a partnership between SITILabs and Federal University of Para (UFPA/Brazil) since 2011. The main goal is to promote digital/social inclusion in the Amazon region by bringing Internet access to remote, infrastructureless locations such as the the riverside communities nearby UFPA. The project has implemented middleware solutions that are actually being experimented in a 7-node testbed at UFPA. This presentation was given in TecWeb 2013 on April 16th, 2013 at University Lusofona in Lisbon, Portugal.]]> Tue, 16 Apr 2013 12:57:30 GMT /WaldirJunior1/dtnamazon-digitalsocial-inclusion-in-the-amazon-region WaldirJunior1@slideshare.net(WaldirJunior1) DTN-Amazon: Digital/Social Inclusion in the Amazon Region WaldirJunior1 DTN-Amazon is a project developed in a partnership between SITILabs and Federal University of Para (UFPA/Brazil) since 2011. The main goal is to promote digital/social inclusion in the Amazon region by bringing Internet access to remote, infrastructureless locations such as the the riverside communities nearby UFPA. The project has implemented middleware solutions that are actually being experimented in a 7-node testbed at UFPA. This presentation was given in TecWeb 2013 on April 16th, 2013 at University Lusofona in Lisbon, Portugal. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/tedweb2013-130416125730-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> DTN-Amazon is a project developed in a partnership between SITILabs and Federal University of Para (UFPA/Brazil) since 2011. The main goal is to promote digital/social inclusion in the Amazon region by bringing Internet access to remote, infrastructureless locations such as the the riverside communities nearby UFPA. The project has implemented middleware solutions that are actually being experimented in a 7-node testbed at UFPA. This presentation was given in TecWeb 2013 on April 16th, 2013 at University Lusofona in Lisbon, Portugal.

DTN-Amazon: Digital/Social Inclusion in the Amazon Region from Waldir Moreira

]]> 383 2 https://cdn.slidesharecdn.com/ss_thumbnails/tedweb2013-130416125730-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 The Role of Information in Opportunistic Networks /slideshow/the-role-of-information-in-opportunistic-networks/17357190 sbrainmeeting20130306waldir-130319061920-phpapp02
]]>
]]> Tue, 19 Mar 2013 06:19:20 GMT /slideshow/the-role-of-information-in-opportunistic-networks/17357190 WaldirJunior1@slideshare.net(WaldirJunior1) The Role of Information in Opportunistic Networks WaldirJunior1 <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/sbrainmeeting20130306waldir-130319061920-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" />

The Role of Information in Opportunistic Networks from Waldir Moreira

]]> 472 2 https://cdn.slidesharecdn.com/ss_thumbnails/sbrainmeeting20130306waldir-130319061920-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Study on the Effect of Network Dynamics on Opportunistic Routing /slideshow/study-on-the-effect-of-network-dynamics-on-opportunistic-routing/13936178 3waldiradhocnow2012-120810084756-phpapp02
There has been an efort to employ social similarity inferred from user mobility patterns in opportunistic routing solutions to improve forwarding. However, the dynamics of the networks are still not fully considered when devising solutions based on social similarity metrics. To address this issue, we propose two utility functions which consider the daily life routines of users and the intensity of their social interactions to take forwarding decisions: Time-Evolving Contact Duration (TECD) that weights social interactions among nodes considering the duration of contacts; and TECD Importance (TECDi) which estimates the importance of nodes. We compare our utility functions against contact- and social-based solutions, and we show that the use of daily life routines information (i.e., using TECD and TECDi ) has a positive effect on opportunistic routing. This presentation was given in the 11th International Conference on Ad-Hoc Networks and Wireless (ADHOC-NOW 2012), July 9th, 2012 in Belgrade, Serbia.]]>
There has been an efort to employ social similarity inferred from user mobility patterns in opportunistic routing solutions to improve forwarding. However, the dynamics of the networks are still not fully considered when devising solutions based on social similarity metrics. To address this issue, we propose two utility functions which consider the daily life routines of users and the intensity of their social interactions to take forwarding decisions: Time-Evolving Contact Duration (TECD) that weights social interactions among nodes considering the duration of contacts; and TECD Importance (TECDi) which estimates the importance of nodes. We compare our utility functions against contact- and social-based solutions, and we show that the use of daily life routines information (i.e., using TECD and TECDi ) has a positive effect on opportunistic routing. This presentation was given in the 11th International Conference on Ad-Hoc Networks and Wireless (ADHOC-NOW 2012), July 9th, 2012 in Belgrade, Serbia.]]> Fri, 10 Aug 2012 08:47:54 GMT /slideshow/study-on-the-effect-of-network-dynamics-on-opportunistic-routing/13936178 WaldirJunior1@slideshare.net(WaldirJunior1) Study on the Effect of Network Dynamics on Opportunistic Routing WaldirJunior1 There has been an efort to employ social similarity inferred from user mobility patterns in opportunistic routing solutions to improve forwarding. However, the dynamics of the networks are still not fully considered when devising solutions based on social similarity metrics. To address this issue, we propose two utility functions which consider the daily life routines of users and the intensity of their social interactions to take forwarding decisions: Time-Evolving Contact Duration (TECD) that weights social interactions among nodes considering the duration of contacts; and TECD Importance (TECDi) which estimates the importance of nodes. We compare our utility functions against contact- and social-based solutions, and we show that the use of daily life routines information (i.e., using TECD and TECDi ) has a positive effect on opportunistic routing. This presentation was given in the 11th International Conference on Ad-Hoc Networks and Wireless (ADHOC-NOW 2012), July 9th, 2012 in Belgrade, Serbia. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/3waldiradhocnow2012-120810084756-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> There has been an efort to employ social similarity inferred from user mobility patterns in opportunistic routing solutions to improve forwarding. However, the dynamics of the networks are still not fully considered when devising solutions based on social similarity metrics. To address this issue, we propose two utility functions which consider the daily life routines of users and the intensity of their social interactions to take forwarding decisions: Time-Evolving Contact Duration (TECD) that weights social interactions among nodes considering the duration of contacts; and TECD Importance (TECDi) which estimates the importance of nodes. We compare our utility functions against contact- and social-based solutions, and we show that the use of daily life routines information (i.e., using TECD and TECDi ) has a positive effect on opportunistic routing. This presentation was given in the 11th International Conference on Ad-Hoc Networks and Wireless (ADHOC-NOW 2012), July 9th, 2012 in Belgrade, Serbia.

Study on the Effect of Network Dynamics on Opportunistic Routing from Waldir Moreira

]]> 505 2 https://cdn.slidesharecdn.com/ss_thumbnails/3waldiradhocnow2012-120810084756-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Opportunistic Routing Based on Daily Routines /slideshow/opportunistic-routing-based-on-daily-routines/13936045 aoc2012-120810083526-phpapp02
Opportunistic routing is being investigated to enable the proliferation of low-cost wireless applications. A recent trend is looking at social structures, inferred from the social nature of human mobility, to bring messages close to a destination. To have a better picture of social structures, social-based opportunistic routing solutions should consider the dynamism of users’ behavior resulting from their daily routines. We address this challenge by presenting dLife, a routing algorithm able to capture thedynamics of the network represented by time-evolving social ties between pair of nodes. Experimental results based on synthetic mobility models and real human traces show that dLife has better delivery probability, latency, and cost than proposals based on social structures. This presentation was given in the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), on June 25th, 2012 in San Francisco, USA.]]>
Opportunistic routing is being investigated to enable the proliferation of low-cost wireless applications. A recent trend is looking at social structures, inferred from the social nature of human mobility, to bring messages close to a destination. To have a better picture of social structures, social-based opportunistic routing solutions should consider the dynamism of users’ behavior resulting from their daily routines. We address this challenge by presenting dLife, a routing algorithm able to capture thedynamics of the network represented by time-evolving social ties between pair of nodes. Experimental results based on synthetic mobility models and real human traces show that dLife has better delivery probability, latency, and cost than proposals based on social structures. This presentation was given in the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), on June 25th, 2012 in San Francisco, USA.]]> Fri, 10 Aug 2012 08:35:24 GMT /slideshow/opportunistic-routing-based-on-daily-routines/13936045 WaldirJunior1@slideshare.net(WaldirJunior1) Opportunistic Routing Based on Daily Routines WaldirJunior1 Opportunistic routing is being investigated to enable the proliferation of low-cost wireless applications. A recent trend is looking at social structures, inferred from the social nature of human mobility, to bring messages close to a destination. To have a better picture of social structures, social-based opportunistic routing solutions should consider the dynamism of users’ behavior resulting from their daily routines. We address this challenge by presenting dLife, a routing algorithm able to capture thedynamics of the network represented by time-evolving social ties between pair of nodes. Experimental results based on synthetic mobility models and real human traces show that dLife has better delivery probability, latency, and cost than proposals based on social structures. This presentation was given in the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), on June 25th, 2012 in San Francisco, USA. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/aoc2012-120810083526-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Opportunistic routing is being investigated to enable the proliferation of low-cost wireless applications. A recent trend is looking at social structures, inferred from the social nature of human mobility, to bring messages close to a destination. To have a better picture of social structures, social-based opportunistic routing solutions should consider the dynamism of users’ behavior resulting from their daily routines. We address this challenge by presenting dLife, a routing algorithm able to capture thedynamics of the network represented by time-evolving social ties between pair of nodes. Experimental results based on synthetic mobility models and real human traces show that dLife has better delivery probability, latency, and cost than proposals based on social structures. This presentation was given in the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), on June 25th, 2012 in San Francisco, USA.

Opportunistic Routing Based on Daily Routines from Waldir Moreira

]]> 440 2 https://cdn.slidesharecdn.com/ss_thumbnails/aoc2012-120810083526-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 Using Social Information to Improve Opportunistic Networking /WaldirJunior1/using-social-information-to-improve-opportunistic-networking sbrainmeeting20120201waldir-120430092729-phpapp01
Presents the first results of my PhD proposal, which resulted in the following papers: MOREIRA, W., SOUZA, M., MENDES, P., SARGENTO, S. Study on the Effect of Network Dynamics on Opportunistic Routing. In: Proceedings of the 11th International Conference on Ad-Hoc Networks and Wireless (AdHoc Now 2012), 2012, Belgrade, Serbia. MOREIRA, W., MENDES, P., SARGENTO, S. Opportunistic Routing Based on Daily Routines. In: Proceedings of the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), 2012, San Francisco, USA. This presentation was given in SITI Brainstorming meeting, on Feb 1st, 2012 @ SITI. ]]>
Presents the first results of my PhD proposal, which resulted in the following papers: MOREIRA, W., SOUZA, M., MENDES, P., SARGENTO, S. Study on the Effect of Network Dynamics on Opportunistic Routing. In: Proceedings of the 11th International Conference on Ad-Hoc Networks and Wireless (AdHoc Now 2012), 2012, Belgrade, Serbia. MOREIRA, W., MENDES, P., SARGENTO, S. Opportunistic Routing Based on Daily Routines. In: Proceedings of the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), 2012, San Francisco, USA. This presentation was given in SITI Brainstorming meeting, on Feb 1st, 2012 @ SITI. ]]> Mon, 30 Apr 2012 09:27:26 GMT /WaldirJunior1/using-social-information-to-improve-opportunistic-networking WaldirJunior1@slideshare.net(WaldirJunior1) Using Social Information to Improve Opportunistic Networking WaldirJunior1 Presents the first results of my PhD proposal, which resulted in the following papers: MOREIRA, W., SOUZA, M., MENDES, P., SARGENTO, S. Study on the Effect of Network Dynamics on Opportunistic Routing. In: Proceedings of the 11th International Conference on Ad-Hoc Networks and Wireless (AdHoc Now 2012), 2012, Belgrade, Serbia. MOREIRA, W., MENDES, P., SARGENTO, S. Opportunistic Routing Based on Daily Routines. In: Proceedings of the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), 2012, San Francisco, USA. This presentation was given in SITI Brainstorming meeting, on Feb 1st, 2012 @ SITI. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/sbrainmeeting20120201waldir-120430092729-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds" /> Presents the first results of my PhD proposal, which resulted in the following papers: MOREIRA, W., SOUZA, M., MENDES, P., SARGENTO, S. Study on the Effect of Network Dynamics on Opportunistic Routing. In: Proceedings of the 11th International Conference on Ad-Hoc Networks and Wireless (AdHoc Now 2012), 2012, Belgrade, Serbia. MOREIRA, W., MENDES, P., SARGENTO, S. Opportunistic Routing Based on Daily Routines. In: Proceedings of the 6th IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC 2012), 2012, San Francisco, USA. This presentation was given in SITI Brainstorming meeting, on Feb 1st, 2012 @ SITI.

Using Social Information to Improve Opportunistic Networking from Waldir Moreira

]]> 607 2 https://cdn.slidesharecdn.com/ss_thumbnails/sbrainmeeting20120201waldir-120430092729-phpapp01-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 A closer look at Online Social Networks (OSNs) /slideshow/a-closer-look-at-online-social-networks-osns/12745323 ianmeeting20110329waldir-120430092053-phpapp02
Presents the work of Mislove et al. (2009) on the characteristics of Online Social Networks. This presentation was given in IANLab meeting, on Mar 29th, 2011 @ SITI. ]]>
Presents the work of Mislove et al. (2009) on the characteristics of Online Social Networks. This presentation was given in IANLab meeting, on Mar 29th, 2011 @ SITI. ]]> Mon, 30 Apr 2012 09:20:51 GMT /slideshow/a-closer-look-at-online-social-networks-osns/12745323 WaldirJunior1@slideshare.net(WaldirJunior1) A closer look at Online Social Networks (OSNs) WaldirJunior1 Presents the work of Mislove et al. (2009) on the characteristics of Online Social Networks. This presentation was given in IANLab meeting, on Mar 29th, 2011 @ SITI. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/ianmeeting20110329waldir-120430092053-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds" /> Presents the work of Mislove et al. (2009) on the characteristics of Online Social Networks. This presentation was given in IANLab meeting, on Mar 29th, 2011 @ SITI.

A closer look at Online Social Networks (OSNs) from Waldir Moreira

]]> 260 2 https://cdn.slidesharecdn.com/ss_thumbnails/ianmeeting20110329waldir-120430092053-phpapp02-thumbnail.jpg?width=120&height=120&fit=bounds presentation White http://activitystrea.ms/schema/1.0/post

http://activitystrea.ms/schema/1.0/posted

0 https://cdn.slidesharecdn.com/profile-photo-WaldirJunior1-48x48.jpg?cb=1532678542 Waldir Moreira holds Bachelors (‘05) and Masters (‘08) degrees in Computer Science. His PhD degree in Telecommunications (’14) is from Universidades do Minho, Aveiro and Porto. His researcher career started at GERCOM/UFPA/Brazil (‘06) passing by INESC-Porto/Portugal (‘09), COPELABS/Portugal (‘10), and Regional Catalão/UFG/Brazil (’15), being involved in different national and European projects. Currently, he is Senior Scientist at Fraunhofer AICOS working in the field of ICT for Development. His research interests and publications are related to Wireless Adhoc, Mesh, Social-aware, Cooperative, Opportunistic, and Information-centric Networking and Routing. https://cdn.slidesharecdn.com/ss_thumbnails/awcsafricomm2017final-180727081313-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/sv4d-the-project-the-reality-observed-and-the-challenges-to-be-addressed/107696004 SV4D: The project, the... https://cdn.slidesharecdn.com/ss_thumbnails/africomm2017-180727080727-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/sv4d-architecture-building-sustainable-villages-for-developing-countries/107695588 SV4D Architecture: Bui... https://cdn.slidesharecdn.com/ss_thumbnails/6f-6461-170929091142-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/susatainable-villages-for-development-promoting-digital-inclusion/80283562 Sustainable Villages f...