The Internet of Things (IoT) shall be able to incorporate transparently and seamlessly a large number different heterogeneous end systems, while providing open access selected subsets data for the development plethora digital services. Building general architecture IoT is hence very complex task, mainly because extremely variety devices, link layer technologies, services that may involved in such system. In this paper, we focus specifically an urban system that, still being quite broad...

Connectivity is probably the most basic building block of IoT paradigm. Up to now, two main approaches provide data access things have been based on either multihop mesh networks using short-range communication technologies in unlicensed spectrum, or long-range legacy cellular technologies, mainly 2G/GSM/GPRS, operating corresponding licensed frequency bands. Recently, these reference models challenged by a new type wireless connectivity, characterized low-rate, transmission sub-gigahertz...

The Internet of Things (IoT) is rapidly spreading, reaching a multitude different domains, including personal health care, environmental monitoring, home automation, smart mobility, and Industry 4.0. As consequence, more IoT devices are being deployed in variety public private environments, progressively becoming common objects everyday life. It hence apparent that, such scenario, cybersecurity becomes critical to avoid threats like leakage sensible information, denial service (DoS) attacks,...

In this paper, we investigate the actual performance of some best known localization algorithms when deployed in real-world indoor environments. Among plethora possible schemes, focus on those based radio signal strength measurements only, since they do not require extra circuitry that would result higher cost and energy consumption. For a fair comparison, have first gathered thousands two different To estimate channel model parameters to compare these data been used.

The next generation of communication systems, which is commonly referred to as 5G, expected support, besides the traditional voice and data services, new paradigms, such Internet Things (IoT) Machine-to-Machine (M2M) involve between Machine-Type Devices (MTDs) in a fully automated fashion, thus, without or with minimal human intervention. Although general requirements 5G systems are progressively taking shape, technological issues raised by vision still partially unclear. Nonetheless,...

For patients who donate blood for autologous use and undergo major orthopedic surgery, low basal hematocrit (Hct) is the cause of allogeneic exposure. To determine whether recombinant human erythropoietin (rHuEPO) could increase procurement reduce exposure, a prospective randomized study was conducted in 50 women undergoing total hip replacement had Hct < 40 percent (0.40). Patients were randomly placed three groups: those receiving placebo, 300 U rHuEPO per kg, 600 kg every 3 to 4 days...

Wireless communication systems are rapidly becoming a viable solution for employment at the lowest level of factory automation systems, usually referred to as either "device" or "field" level, where requested performance may be rather critical in terms both transmission time and reliability. In this paper, we deal with use wireless networks device level. Specifically, after an analysis requirements, introduce general profile fieldbus. Both physical data link layers taken directly from...

In this paper, we focus on a vehicular ad hoc network (VANET) that makes use of 802.11-like wireless interfaces for Inter Vehicular Communication (IVC). We propose distributed position-based broadcast protocol, named Smart Broadcast (SB), aims at i) maximizing the progress message along propagation line, and ii) minimizing re-broadcast delay. The protocol is analyzed through mathematical model permits to determine optimal parameter setting given scenario. Simulations are then used validate...

Background The laboratory diagnosis of hereditary spherocytosis commonly relies on NaCl-based or glycerol-based red cell osmotic fragility tests; more recently, an assay directly targeting the molecular defect (eosin-5′-maleimide-binding test) has been proposed. None available tests identifies all cases spherocytosis.Design and Methods We compared performances eosin-5′-maleimide-binding test, NaCl-osmotic studies fresh incubated blood, glycerol lysis acidified Pink test a series 150 patients...

Hereditary spherocytosis is a very heterogeneous form of hemolytic anemia. The aim this study was to relate the type molecular defect with clinical and hematologic features response splenectomy using information from large database patients.Data 300 consecutive patients hereditary spherocytosis, grouped according results sodium dodecyl sulphate-polyacrylamide gel electrophoresis, were analyzed sensitivity red cell osmotic fragility tests compared in various subsets patients.Band 3 spectrin...

The term "ranging" is often used to indicate the operations that make it possible estimate distance between two nodes by processing some signals generated and/or received nodes. In wireless systems, a very popular ranging method makes use of radio signal strength (RSS), which measure power. However, RSS-based considered inaccurate, particularly in indoor environments, mainly because randomness this tutorial paper, we provide an in-depth analysis main factors affect variability power and...

The ever-increasing demand for seamless high-definition video streaming, along with the widespread adoption of dynamic adaptive streaming over HTTP (DASH) standard, has been a major driver large amount research on bitrate adaptation algorithms. complexity and variability content mobile wireless channel make this an ideal application learning approaches. Here, we present D-DASH, framework that combines deep reinforcement techniques to optimize quality experience (QoE) DASH. Different...

Over the years, Internet has been enriched with new available communication technologies, for both fixed and mobile networks devices, exhibiting an impressive growth in terms of performance, steadily increasing data rates. The research community kept trying to evolve transport layer protocols match capabilities modern networks, order fully reap benefits technologies. This paper surveys main novelties related that have recently proposed, identifying three trends: (i) evolution congestion...

Bike-sharing services are flourishing in Smart Cities worldwide. They provide a low-cost and environment-friendly transportation alternative help reduce traffic congestion. However, these new still under development, several challenges need to be solved. A major problem is the management of rebalancing trucks order ensure that bikes stalls docking stations always available when needed, despite fluctuations service demand. In this work, we propose dynamic strategy exploits historical data...

LoRaWAN is an emerging Low-Power Wide Area Network (LPWAN) technology, which gaining momentum thanks to its flexibility and ease of deployment. Conversely other LPWAN solutions, indeed permits the configuration several network parameters that affect different performance indexes, such as energy efficiency, fairness, capacity, in principle making it possible adapt behavior specific requirements application scenario. Unfortunately, complex sometimes elusive interactions among components make...

The next generations of vehicles are expected to support advanced services, such as object detection and recognition, risk identification avoidance, car platooning, others, which will require data transmission rates the order gigabits per driving hour. This unprecedented amount be exchanged goes beyond capabilities existing communication technologies calls for new solutions. In this regard, millimeter wave (mmWave) band is very appealing due potentially huge bitrates that can achieved...

In response to the new challenges in design and operation of communication networks, taking inspiration from how living beings deal with complexity scalability, this paper we introduce an innovative system concept called COgnition-BAsed NETworkS (COBANETS). The proposed approach develops around systematic application advanced machine learning techniques and, particular, unsupervised deep probabilistic generative models for system-wide learning, modeling, optimization, data representation....

In the last years, IEEE 802.11 Wireless LANs (WLANs) have proved their effectiveness for a wide range of real-time industrial communication applications. Nonetheless, introduction important 802.11n amendment, which is commonly implemented in commercial devices, has not been adequately addressed this operational framework yet. encompasses several enhancements at both physical (PHY) and medium access control (MAC) layers that may bring considerable improvements to performance WLANs deployed...

LoRaWAN networks are growing in popularity and adoption, mainly thanks to the inexpensive devices, affordable gateway costs, possibility opt for a private deployment or use of global network providers. While main case these is sensor data collection, standard also defines confirmed messages, which downlink transmissions required. In this paper we show that an incautious feature can bring sharp decrease performance network, especially large scale deployments. Additionally, present some...

The Covid-19 pandemic has abruptly changed well-established mobility patterns, as the need for social distancing and lockdown orders have driven citizens to reduce their movements avoid crowded mass transit. In this context, we look at case of New York City's bike sharing system, one largest in world, gain insights on socio-economic variables behind urban during a pandemic. We exploit several sources Smart City data analyze relationship between sharing, public transport, other modes...

We study the performance of TCP Westwood (TCPW), a new protocol with sender-side modification window congestion control scheme. controls using end-to-end rate estimation in way that is totally transparent to routers and destination. Thus, it compatible any network implementation. The key innovative idea continuously estimate, at sender, packet connection by monitoring ACK reception rate. estimated then used compute slow start threshold settings after episode. Resetting match available...

This paper presents the localization of a mobile robot while simultaneously mapping position nodes Wireless Sensor Network using only range measurements. The can estimate distance to nearby by measuring Received Signal Strength Indicator (RSSI) received radio messages. RSSI measure is very noisy, especially in an indoor environment due interference and reflections signals. We adopted Extended Kalman Filter SLAM algorithm integrate measurements from different over time, moves environment. A...

In this paper, we address the problem of computing probability that r out n interfering wireless signals are "captured," i.e., received with sufficiently large Signal to Interference plus Noise Ratio (SINR) correctly decode by a receiver multi-packet reception (MPR) and Successive Cancellation (SIC) capabilities. We start considering simpler case pure MPR system without SIC, for which provide an expression distribution number captured packets, whose computational complexity scales r. This...

"Smart City" is a powerful paradigm that applies the most advanced communication technologies to urban environments, with final aim of enhancing quality life in cities and provide wide set value-added services both citizens administration. A fundamental step towards practical realization Smart City concept consists development infrastructure capable collecting data from large variety different devices mostly uniform seamless manner, according Internet Things (IoT) paradigm. While scientific...