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Sensing of food spoilage and contamination is an active area of research, with many types of contact and noncontact sensors are being developed that can track fresh food quality throughout the distribution process. In this paper, we consider the communication of the sensed product quality along with the box position (in the stack of boxes in the truck or in a warehouse room) to the next level, in...
TCP LoLa is a new delay-based congestion control that supports both, low queuing delay and high network utilization in high speed wide-area networks. This is particularly useful for traffic mixes consisting of bandwidth demanding and delay sensitive flows (e.g., long file transfer and interactive "web 2.0" traffic). TCP LoLa keeps the queuing delay at the bottleneck link low around a fixed...
In this paper, we leverage two large-scale real-world datasets to provide the first results on the limits of predictability of cellular data traffic demands generated by individual users over time and space. Using information theory tools, we measure the maximum predictability that any algorithm has potential to achieve. We first focus on the predictability of mobile traffic consumption patterns in...
Ensuring the quality of online learning in higher education institutions is a growing concern in recent years. While several studies have focused on the perception of the quality of online education by academic staff and administrators, this research is based on student perceptions. This study used qualitative methods to investigate the perceptions of students from the Technical University of Moldova...
Smart Grid uses the TCP/IP protocol stack for wide area communications. To ensure low latency end to end communications, the FREEDM project chooses UDP datagram as the preferred technique. However, when many devices are using the same network resources, congestion can happen on intermediate routers. Unlike TCP, which uses ECN as an approach for congestion control, UDP does not have a similar implementation...
The virtual networking embedding (VNE) problem is a core issue in network virtualization. This is also a challenging problem as it contains different kinds of constraints, and its complexity becomes even higher in an online VNE problem with thousands of virtual network (VN) requests. In this paper, we proposed an ant colony system based VNE algorithm, called ACS-VNE, for the online VNE problem. The...
This article describes SECav, an educational software developed in the context of a research project, with the aim of supporting the teaching and learning processes of a Numerical Calculus course that is taught for several courses of the Exact and Natural Sciences Faculty of the UNLPam University. SECav focuses on the numerical resolution of nonlinear equations, polynomial interpolation and approximation,...
This work aims to present the planning, development (methodology) and implementation (technologies used) of the learnning object (LO) SegurIdade Virtual, as well as highlighting the learning experiences with the object. The material was built in game format and seeks to develop, in a playful way, the critical thinking of the elderly public for the safe use of the internet. The object was builded based...
An innovative way of conceiving the teaching of science is through the implementation of Inquiry-Based Learning (IBL) (1). This is defined as a process in which “questions are asked about the natural world, hypotheses are generated, research is designed, and data are collected and analyzed in order to find a solution to the problem” (2). This research project in development seeks to implement the...
The economic aspects of peering and transit interconnections between ISPs have been extensively studied in prior literature. Prior research primarily focuses on the economic issues associated with establishing peering and transit connectivity among ISPs to model interconnection strategies. Performance analysis, on the other hand, while understood intuitively, has not been empirically quantified and...
Fueled by increasing network bandwidth and decreasing costs, the popularity of over-the-top large-scale live video streaming has dramatically increased over the last few years. In this paper, we present a measurement study of adaptive bitrate video streaming for a large-scale live event. Using server-side logs from a commercial content delivery network, we study live video delivery for the annual...
In the current online advertisement delivery, an ad slot on a publisher's website may go through multiple layers of bidding and reselling until the final ad content is delivered. The publishers have little control on the ads being displayed on their web pages. As a result, website visitors may suffer from unwanted ads such as malvertising, intrusive ads, and information disclosure ads. Unfortunately,...
The increased popularity of IEEE 802.11 LANs (WLANs) in residential (home) environments leads to dense, unplanned and thus chaotic deployments. Access Points (APs) are frequently deployed unfavorably in terms of radio coverage and use interfering frequency/power settings. In fact, in some parts of a one's apartment the usage of the neighbor's AP might be preferred as it might provide better signal...
In recent years, privacy issues in the networking field are getting more important. In particular, there is a lively debate about how Internet Service Providers (ISPs) should collect and treat data coming from passive network measurements. This kind of information, such as flow records or HTTP logs, carries considerable knowledge from several points of view: traffic engineering, academic research,...
Internet connection is essential for daily life, however not all areas are covered by Internet access due to historical reasons. For example, with 3.7 million daily passengers, London underground system has no WiFi or cellular signal provided during travelling due to legacy reasons. Deploy new access infrastructure need to consider the integrating problem with the current environment, also bring a...
This contribution extends the series of papers about virtual laboratory for control of a hydraulic system that is based on Matlab/Simulink environment. It presents the application of dynamical feedforward control for a three-tank system that can run locally or via the Internet as a virtual laboratory. The controller design uses exact linearization techniques and takes into account input saturations...
With the promotion of electric power reform in China, distributed energy participating in power market transaction becomes possible. However, due to the characteristics of transaction decentralization, multiple energy synergies, information symmetry and the large quantity, the transaction cost and the risk of information leak increase significantly, which inhibits the enthusiasm of distributed energy...
Twitter is well known website famous for micro blogging where millions of users exchanging their opinions and thoughts. The tweets users are sharing has a error sum nature. The information available in tweets is insufficient. Because of character limitation tweets are short in nature many applications like Information Retrieval has problems in information retrieval. Here we are proposing a batch processing...
More than 64% of schools in Apurimac Peru are located in rural area; unlike the schools in urban area, they present problem of lack of Internet connection, hence, without access to virtual learning and they can't use Educational Resources. This paper describes the design, development and testing of the Mini Learning Management System for schools without internet connection to improve de availability...
Despite years of research, the Internet still lacks a routing protocol with guaranteed termination. As is well-known, decentralization of routing decisions among the Autonomous Systems (ASes) that comprise the Internet may result in permanent oscillations of the state of its routing protocol — the Border Gateway Protocol (BGP). Some permanent oscillations are made from routing loops — the propagation...
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