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The Second Edition of this best-selling text continues to answer the question, How do computer networks and internets operate? Douglas Comer, a leading computer networking authority, provides a self-contained tour from the lowest levels of data transmission wiring through the highest levels of application software, explaining how facilities and services are used and extended in the next level. Finally, the text explains how applications use reliable stream transfer to provide high-level services. Computer Networks and Internets is appropriate for use by undergraduate students, as well as graduate students and professionals with little or no background in networking or operating systems. The text uses analogies and examples to define concepts instead of sophisticated mathematical proofs.
Handout # 6: Computer Networks & Healthcare. SII 199 - Computer Networks and Society. Professor Yashar Ganjali Department of Computer Science University of Toronto [email protected] http://www.cs.toronto.edu/~yganjali. Announcements. Assignment # 1 Slideshow 2387198 by anne
A computer network for providing a test environment is disclosed. The computer network may include at least one simulated network for simulating at least a portion of the infrastructure of a productio
Computer network and system administration students learn to build and troubleshoot computer networks and manage massive databases effectively and securely.
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Mobile network services are performed in a mobile data network in a way that is transparent to most of the existing equipment in the mobile data network. The mobile data network includes a radio access network and a core network. A breakout component in the radio access network breaks out data coming from a basestation, and performs one or more mobile network services at the edge of the mobile data network based on the broken out data. The breakout component includes a service interface that performs primary control by one system, and backup control by a different system.
A security risk of a computer network is assessed by simulating a threat environment of the computer network, wherein the threat environment includes a vulnerability and a website, simulating a protection environment of the computer network and a computer system in the computer network, and simulating network activity of the computer system. The security risk of the computer network is assessed based at least in part on the simulated threat environment, the simulated protection environment, and the simulated network activity of the computer system.
Following the application of computers in surgery and connecting diagnostic devices with computer networks by use of DICOM protocol, the next step is directed toward connecting these local computer networks with broad range networks, i.e. within a clinical center, city, country, or countries. The establishment of complex computer networks of diagnostic systems across the country offers another significant application of computer networks in medicine, i.e. telemedicine (distant medical consultation in the diagnosis and treatment). Current computer networks using ATM technology allow for very fast and simultaneous communication among a number of physicians for joint diagnostic or therapeutic consultation. Textual, image, audio and video communication as well as exchange of operative field spatial models are thus enabled. Patient images and 3D spatial models can be simultaneously examined by a number of phyisicans, who then can outline and describe image segments by use of textual messages, ...
CS640: Introduction to Computer Networks. Aditya Akella Lecture 20 - Queuing and Basics of QoS. Queuing Disciplines. Each router must implement some queuing discipline Scheduling discipline Drop policy Queuing allocates both bandwidth and buffer space: Slideshow 3035973 by ishi
This volume contains papers presented at the 5th International Conference on Mat- matical Methods, Models and Architectures for Computer Network Security (MMM-ACNS 2010) held in St. Petersburg, Russia
The present invention is an integrated system for gathering commerce information and distributing advertising using a global computer network in order to improve and enhance the efficiency of commerce
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APPLY THROUGH CLEARING TODAY. Call 020 8411 6565. BSc Computer Networks with Honours focuses on understanding key aspects of contemporary networked systems.
The Role of Computer Networks in Development Larry Press California State University The good news is that the Internet has grown like a weed, and many welcome it as a tool for productivity and enlightenment; the bad news is that it is almost unknown in developing nations (see Table 1). This article offers the hypothesis…
U.S. health officials were first alerted to the current peanut-based salmonella outbreak through a government computer network called PulseNet. But the system relies on doctors testing patients and it takes interviews with patients to identify the food source.
A method and system are provided for provisioning a circuit in a data network without manual intervention. A network management module receives an order for provisioning the circuit and then, based on the order, transmits a request to a legacy logical element module to configure a logical circuit in one or more network devices in the network. The network device may be a switch. The circuit may be a frame relay circuit or an ATM circuit. A method and system are also provided for maintaining a network circuit in a data network. The network circuit includes both a logical circuit and a physical circuit. A legacy physical element module sends a request for logical circuit data to a legacy logical element module through a network management module in communication with the legacy physical element module and the legacy physical element module. Based on the request, the legacy logical element module retrieves the logical circuit data from one or more network devices in the network and transmits the data to the
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Closed system thermodymamics is taught as gospel by conventional academics and forms the foundation of our civilization and all current technologies. The problem is, there is no such thing as a closed system.. The closed system assumption is defined as being an isolated system, but the same definition states that energy is exchanged with the surrounding environment so it makes little sense.. Everything in the natural world operates on the principles of Open System energy exchanges and Thermodynamics. We can apply these same concepts to energy producing machines whether theyre electrical, mechanical, biological or otherwise.. Open system knowledge allows a generator to receive free source potential from the environment. This can accomplish real work and that is exactly what Michaels wind turbine example and other energy technologies accomplish. Although conventional wind powered generators are open system, they are developed based on closed system efficiency formulas. Michaels does the ...
Average salaries for Open Systems International Power Systems Engineer: $68,613. Open Systems International salary trends based on salaries posted anonymously by Open Systems International employees.
Open System Thermodynamics by Peter Lindemann Open System Thermodynamics by Peter Lindemann: Learn how Energy behaves in Open Systems, which is completely contrary to conventionally taught closed-system thermodynamics! No laws are violated and the historical facts will surprise you. The 2nd Law of Thermodynamics says that machines that produce more...
A system for classifying, monitoring, controlling and otherwise managing and allocating bandwidth of a network to data streams. A method for allocating bandwidth of a data network to a plurality of data streams is provided. The method comprises specifying apportionment of the bandwidth to a plurality of data classes. Receiving a plurality of data streams wherein each data stream has an associated data class. Negotiating a transfer rate for each data stream, wherein the transfer rate is limited to the bandwidth apportioned to the data class associated with each data stream and transmitting the data streams on the data network at the negotiated transfer rates.
The Internet (portmanteau of interconnected network) is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing. The origins of the Internet date back to research commissioned by the federal government of the United States in the 1960s to build robust, fault-tolerant communication with computer networks. The primary precursor network, the ARPANET, initially served as a backbone for interconnection of regional academic and military networks in the 1980s. The funding of the National Science Foundation Network ...
Seeking a position where I can leverage my military, educational, and professional leadership experience, specifically in the areas of Special Operations, Counterterrorism, Project Management, Analytical Thinking, Computer Network Operations (CNO), Network Infrastructure, Network Administration and Security, Information Assurance, and Military Exercises and Planning. Core Competencies and Technical Proficiencies: Supervise and perform Network Management and Network Administration on DoD Local, Metropolitan, and Wide Area Networks, C4 and intelligence systems. Supervise and perform daily Help Desk, Information Protection Operations and Computer Network Operations. Oversee network configurations, faults, performance, security management, and information systems life cycle management. Repair network systems and all associated client systems in a fix or deployed environment. Configure and manage hardware/software: routers, switches, network test equipment, network analyzers, servers, desktops, ...
PCORnet is a research database that focuses on making research more efficient and less expensive for patients, researchers, health systems, and clinicians. PCORnet realizes the importance of patient-centered research, instead of being led by researchers, thus attributes the patient experience as its foundation.. There are two kinds of individual partner networks that make up PCORnet. These include Clinical Data Research Networks (CDRNs) and Patient-Powered Research Networks (PPRNs). Clinical Data Research Networks are trustworthy networks that exist in healthcare systems, and collect data, such as health information, during patient care. Patient-Powered Research Networks are controlled by patient groups and the patients partners who can provide vital information about a condition or characteristics of a condition. Together, the technical and logistical information from CDRNs and PPRNs is organized by a Coordinating Center through Harvard Pilgrim Health Care Institute, the Duke Clinical Research ...
Etymology is the study of how a word was originally formed. The word Internet, as one example, is a modern word. There is no ancient word belonging to what we today know as the World Wide Web because it didnt exist in the ancient world. When we say Internet, people know we are describing a vast computer network linking smaller computer networks worldwide…[through the use of] the same set of communications protocols,[vi] or more simply, that thing we log on to over the computer at night to check e-mail. So, when we say Internet, everyone knows what were describing and what the word means in the same way many know that an obelisk is a pointed pillar. However, the word Internet is a compound word made up of: 1) the prefix inter-, meaning between, among, in the midst of, mutually, reciprocally, together, [and] during,[vii]and 2) net(work), meaning a netlike combination of filaments, lines, veins, passages, or the like.[viii] Our culture has taken one prefix that ...
A method and system for intelligently directing a search of a peer-to-peer network, in which a user performing a search is assisted in choosing a host which is likely to return fast, favorable results to the user. A host monitor monitors the peer-to-peer network and collects data on various characteristics of the hosts which make up the network. Thereafter, a host selector ranks the hosts using the data, and passes this information to the user. The user then selects one or more of the highly-ranked hosts as an entry point into the network. Additionally, a cache may collect a list of hosts based on the content on the hosts. In this way, a user may choose to connect to a host which is known to contain information relevant to the users search. The host selector may be used to select from among the hosts listed in the cache.
A communication protocol includes one or more messages passed between Web routers over a reliable transmission protocol used for inter-Web router communication. These messages include information that allows the Web routers to dynamically update mappings of client addresses or address ranges to information object repository addresses based on client-to-server distance and server load. The mappings are preferably optimal mappings of the client addresses or address ranges to the information object repository addresses and the messages report updated distances from these information object repository addresses to the client addresses or address ranges. For example, the messages may report, for each updated distance, an associated client address or address range and/or an associated anchor address of a Web router co-located with an information object repository that is the subject of the message.
Data & statistics on Heavy-Tailed Probability Distributions in the World Wide Web: Heavy-Tailed Probability Distributions in the World Wide Web Mark Crovella, Murad, Taqqu, Azer Bestavros, 1996, Heavy-Tailed Probability Distributions in the World Wide Web Mark Crovella, Murad, Taqqu, Azer Bestavros, 1996, Example Zipf Distribution...
The motivating example for this paper comes from a distributed health data network, the International Consortium of Orthopaedic Registries (ICOR), which aims to examine risk factors for orthopedic device failure for registries around the world. Unfortunately, regulatory, privacy, and propriety concerns made sharing of raw data impossible, even if de-identified. Therefore, this article describes an approach to extraction and analysis of aggregate time-to-event data from ICOR. Data extraction is based on obtaining a survival probability and variance estimate for each unique combination of the explanatory variables at each distinct event time for each registry. The extraction procedure allows for a great deal of flexibility; models can be specified after the data have been collected, for example, modeling of interaction effects and selection of subgroups of patients based on their values on the explanatory variables. Our analysis models are adapted from models presented elsewhere - but allowing for ...
Dean / Professor, Faculty of Environment and Information Studies, Keio University In 1979, he enrolled in the Department of Mathematics, Faculty of Science and Technology, of Keio University and obtained degrees of MS and Ph.D in Computer Science, specializing in Computer Science, Computer Network and Computer Communication, in 1981 and 1987 respectively, both from Keio University.. In 1984, he developed the Japan University UNIX Network (JUNET). In 1988, he established WIDE Project, of which he currently has the title of the Founder. In the 1990s, he focused on the research and development of computer networks, and worked as a member of the Internet Architecture Board (IAB) (1993-1995), and a member of the board of trustees of the Internet Society (ISOC) (1997-2000), as well as a member of the board of directors of the Internet Corporation for Assigned Names and Numbers (ICANN) (1998-2000). In the 2000s, he turned his attention also to IT governance for national government, including Prime ...
IT and telecom services provider NTT Communications Corporation (NTT Com), has launched the international data network services in India through its affiliate
Tender for Health Data Research Innovation Gateway. The Gateway will not store or hold health data, which will be held by data custodians.
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a computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange. ...
Description. This book is devoted to the most used methodologies for performance evaluation: simulation using specialized software and mathematical modeling. An important part is dedicated to the simulation, particularly in its theoretical framework and the precautions to be taken in the implementation of the experimental procedure. These principles are illustrated by concrete examples achieved through operational simulation languages ??(OMNeT ++, OPNET). Presented under the complementary approach, the mathematical method is essential for the simulation. Both methodologies based largely on the theory of probability and statistics in general and particularly Markov processes, a reminder of the basic results is also available.. ...
A communication module exchanges real-world information with a server in a network via wireless connectivity. The communication module has at least one of a short-range and a long-range communication device operating in at least one of an indoor and an outdoor environment in real-world interactive event.
The first packet-switched computer network was the NPL network, followed closely by the ARPANET. The latter used a backbone of routers called Interface Message Processors. Both the NPL and ARPANET networks were interconnected in 1973, while other packet-switched computer networks began to proliferate in the 1970s, eventually adopting TCP/IP protocols or being replaced by newer networks. The National Science Foundation created NSFNET in 1986 by funding six networking sites using 56kbit/s interconnecting links and peering to the ARPANET. In 1987, this new network was upgraded to 1.5Mbit/s T1 links for thirteen sites. These sites included regional networks that in turn connected over 170 other networks. IBM, MCI and Merit upgraded the backbone to 45Mbit/s bandwidth (T3) in 1991.[1] The combination of the ARPANET and NSFNET became known as the Internet. Within a few years, the dominance of the NSFNet backbone led to the decommissioning of the redundant ARPANET infrastructure in 1990.. In the early ...
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract-Novel network architectures with distributed service components on both routers and end-systems have been proposed to provide the necessary flexibility in the next-generation Internet. Such architectures allow services to be composed along the data path to satisfy different communication requirements. A major operational challenge in such systems is to determine where to perform the required services along the data path. This problem, which we call as the
May 31, 2011. Lockheed Martin, the nations largest military contractor, has battled disruptions in its computer networks this week that might be tied to a hacking attack on a vendor that supplies coded security tokens to millions of users, security officials said on Friday.. The SecurID electronic tokens, which are used to gain access to computer networks by corporate employees and government officials from outside their offices, are supplied by the RSA Security division of the EMC Corporation.. RSA acknowledged in March that it had sustained a data breach that could have compromised some of its security products. Executives in the military industry said Friday that Lockheeds problems appeared to stem from that data breach and could be the first public signs of damage from it.. Read Entire Article. ...
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A method and system for central management of plural network clients interfaced with a network host, each network client automatically calling a login routine (20) and a start-up routine (22) associat
At Data Resolution, we understand how precious your time is. While your computer network is crucial to your business success, you have more important issues to deal with. Our fully managed program is the ideal solution for organizations that demand the utmost in network reliability and quality service. Our team ensures your computer network is running predictably, optimally, and securely.. We provide your company with total IT support and management for a fixed monthly price. This allows you to take advantage of all the benefits of an internal MIS department for a fraction of the cost of staffing one yourself.. Our services reduce the business impact of IT failures by minimizing their occurrence. Any unforeseen issues are dealt with quickly. We cover all aspects of your network including security, data protection, applications, and hardware.. When you outsource the management of your IT resources to us, we look upon it as a partnership. Our comprehensive approach allows us to act as your IT ...
His research shows that a single Xbox could be used as a desktop parallel computer, allowing researchers to run proof-of-concept simulations rapidly, without the complexity of programming a parallel computer network. The GPU in the Xbox is equivalent to about a 10 to 15 node parallel computer network, he said.. Scarle, who has a background in the computer games industry, said he was aware of the parallel processing power of the graphical processing unit (GPU) used in the Xbox 360 to render graphics. He used the Xbox 360 to model how electrical excitations in the heart moved around damaged cardiac cells to investigate or even predict cardiac arrhythmias (abnormal electrical activity in the heart which can lead to a heart attack). To conduct these simulations using traditional CPU-based processing one would normally need to book time on a dedicated parallel processing computer or spend thousands of pounds on a parallel network of PCs.. Scarle said, This is a highly effective way of carrying out ...
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For large-scale wireless sensor networks (WSNs) with a minority of anchor nodes, multi-hop localization is a popular scheme for determining the geographical positions of the normal nodes. However, in practice existing multi-hop localization methods suffer from various kinds of problems, such as poor adaptability to irregular topology, high computational complexity, low positioning accuracy, etc. To address these issues in this paper, we propose a novel Multi-hop Localization algorithm based on Grid‑Scanning (MLGS). First, the factors that influence the multi-hop distance estimation are studied and a more realistic multi-hop localization model is constructed. Then, the feasible regions of the normal nodes are determined according to the intersection of bounding square rings. Finally, a verifiably good approximation scheme based on grid-scanning is developed to estimate the coordinates of the normal nodes. Additionally, the positioning accuracy of the normal nodes can be improved through neighbors
Heart Rate Monitors (HRMs) have become widely used since the last two decades. It used as training aid for various types of sports. And the development of new HRMs has evolved rapidly. Thus, in order to determine the exercise intensity of training session or race, HRMs are mainly used. Compared to the other indication of exercise intensity, Heart rate is easy to monitor, compatible to use in most situation and relatively cheap. Thus, it is most beneficial if wireless sensor network can be implementing into the system. Other than monitored their condition by themselves, this system may allowed a number of athletes being monitored simultaneously. Arduino-Nano board was used to interface with nRF24AP1 and XBee. The wireless sensor network consists of a microcontroller on Arduino-Nano board, nRF24AP1 and the XBee wireless communication module which is based on the IEEE 802.15.4. This system will involve peer to peer communication of ANT+ and mesh networking among the XBee ...
Security in wireless sensor networks is difficult to achieve because of the resource limitations of the sensor nodes. We propose a trust-based decision framework for wireless sensor networks coupled with a non-deterministic routing protocol. Both provide a mechanism to effectively detect and confine common attacks, and, unlike previous approaches, allow bad reputation feedback to the network. This approach has been extensively simulated, obtaining good results, even for unrealistically complex attack scenarios.
In this study, we analyze security and quality of service (QoS) issues in cluster-based wireless sensor networks (WSN). Taking spatial resolution as the main QoS metric and limiting the security definition to data integrity and authentication, we present a control strategy to maintain desired QoS and security levels during the entire operation of a cluster-based sensor network. Besides, our proposed strategy considers some other WSN QoS attributes such as coverage, packet collision and system lifetime. It provides sufficient coverage by statistical means and minimizes packet loss due to collisions by employment of a slotted MAC (media access control) scheme. It also tries to maximize the operational lifetime of the sensor network by a power conserving scheme which make all sensors participate equally. In this study, we also determine the best tradeoff between security and spatial resolution ...
Temperature-Aware Routing Using Secondary Sink in Wireless Body Area Sensor Network: 10.4018/978-1-7998-2454-1.ch065: Wireless Body Area Sensor Network (WBASN) is a developing application of Wireless Sensor Network (WSN) which is very useful in diagnosis of human health
Wireless sensor networks are deployed for the purpose of sensing and monitoring an area of interest. Sensor measurements in sensor networks usually suffer
One of the major challenges in deployed wireless sensor networks (WSN) is to curb down congestion in networks traffic without compromising the energy consumption of the sensor nodes. Congestion disrupts the continuous flow of data, increases loss of information, delays data delivery to the destination and significantly and unnecessarily increases energy consumption in already energy-strapped nodes. Obviously, in healthcare WSN applications, particularly those that cater to medical emergencies or monitor patients in critical conditions, it is desirable to prevent congestion from occurring in the first place. In this work, the authors address the problem of congestion in the nodes of healthcare WSN using a learning automata (LA)-based approach. The primary objective is to adaptively equate the processing rate (data packet arrival rate) in the nodes to the transmitting rate (packet service rate), so that the occurrence of congestion in the nodes can be avoided.
Data aggregation is an essential operation to reduce energy consumption in large-scale wireless sensor networks (WSNs). A compromised node may forge an aggregation result and mislead base station into trusting a false reading. Efficient and secure aggregation scheme is critical in WSN applications due to the stringent resource constraints. In this paper, we propose a method to build up the representative-based aggregation tree in the WSNs such that the sensing data are aggregated along the route from the leaf cell to the root of the tree. In the cinema of large-scale and high-density sensor nodes, representative-based aggregation tree can reduce the data transmission overhead greatly by directed aggregation and cell-by-cell communications. It also provides security services including the integrity, freshness, and authentication, via detection mechanism in the cells.
A system and method for implementing a wireless sensor network. The system comprises a plurality of motes, each mote having a sensor and a wireless communication system for communicating with neighboring motes; a distributed routing table distributed amongst each of the plurality of motes; and an update system for periodically updating the distributed routing table.
Wireless sensor networks have variety of applications in military and civilian tracking, habitat monitoring, patient monitoring and industrial control and automation. Many protocols have been...
In the literature, it is common to consider that sensor nodes in a clustered-based event-driven Wireless Sensor Network (WSN) use a Carrier Sense Multiple Access (CSMA) protocol with a fixed transmission probability to control data transmission. However, due to the highly variable environment in these networks, a fixed transmission probability may lead to extra energy consumption. In view of this, three different transmission probability strategies for event-driven WSNs are studied: optimal, fixed and adaptive. As expected, the optimum strategy achieves the best results in terms of energy consumption but its implementation in a practical system is not feasible. The commonly used fixed transmission strategy is the simplest but does not adapt to changes in the systems conditions and achieves the worst performance. In the paper, we find that the adaptive transmission strategy, pretty easy to implement, achieves results very close to the optimal one. The three strategies are analyzed in terms of energy
Wireless Sensor Networks are believed to be the enabling technology for Ambient Intelligence. They hold the promise of delivering to a smart communication parad
This dissertation research proposes embedding artificial neural networks into wireless sensor networks in parallel and distributed processing framework to implant intelligence for in-network processing, wireless protocol or application support, and infusion of adaptation capabilities. The goal is to develop in-network intelligent computation and adaptation capability for wireless sensor networks to improve their functionality, utility and survival aspects. The characteristics of wireless sensor networks bring many challenges, such as the ultra large number of sensor nodes, complex dynamics of network operation, changing topology structure, and the most importantly, the limited resources including power, computation, storage, and communication capability. All these require the applications and protocols running on wireless sensor network to be not only energy-efficient, scalable and robust, but also adapt to changing environment or context, and application scope and focus among others, and ...
In various wireless sensor network applications, it is of interest to monitor the perimeter of an area of interest. For example, one may need to check if there is a leakage of a dangerous substance. In this pa.... ...
In wireless sensor network the most challenging task is to reduce energy consumption. Due to resource restricted sensor nodes, it is valu...
Note: NI WSN products are not supported beyond LabVIEW 2015. If you have questions on migrating products, contact technical support at ni.com/support. This document describes the use of the Vaisala HMM 30D sensor with the NI Wireless Sensor Networks (WSN) system for wireless humidity monitoring. This document is one in a series of documents describing how to use specific sensor products with the NI WSN system to enable a variety of applications, such as environmental monitoring, climate studies, and resource monitoring. For more information on using other sensors with the NI WSN system, please refer to the WSN Sensor Solutions document.
Wireless Sensor Networks will open the floodgates to the wireless revolution. But building a practical wireless network can be a daunting challenge unless the concepts are kept simple.
Note: NI WSN products are not supported beyond LabVIEW 2015. If you have questions on migrating products, contact technical support at ni.com/support. This document describes the use of the Vaisala GMM 221 sensor with the NI Wireless Sensor Networks (WSN) system for wireless humidity and temperature monitoring. This document is one in a series of documents describing how to use specific sensor products with the NI WSN system to enable a variety of applications, such as environmental monitoring, climate studies, and resource monitoring. For more information on using other sensors with the NI WSN system, please refer to the WSN Sensor Solutions document.
The global industrial wireless sensor network market size was valued at USD 3,282.2 million in 2018 and is expected to reach USD 8,669.8 million by 2025, growing at a CAGR of 15.2% from 2019 to 2025. IWSN is a network infrastructure that enables connectivity between sensor nodes and gateways without fiber cables
CiteSeerX - Scientific documents that cite the following paper: Robust positioning algorithms for distributed ad-hoc wireless sensor networks
The video stream transmission over wireless sensor networks is specially required to consider the Quality of Service (QoS), such as low p...
This paper models and analyzes the infrastructure communication reliability of wireless sensor networks (WSN) with tree topology. Reliability metrics are developed for WSN under five different data delivery models, including sink unicast, anycast, multicast, manycast, and broadcast. An example of WSN with tree topology is analyzed to illustrate the application of the proposed reliability metrics. Reliability results for the five data delivery models are compared and discussed.
Algorithms for Spatial Partitioning in Wireless Sensor Network: 10.4018/978-1-4666-4038-2.ch006: Recent interest in integrated electronic devices (sensors) that operate wirelessly creates a wide range of applications related to national security
A Wireless Sensor Networks Platform For Modelling Space Perception During Saccadic Eye-Movements. In: 12th IMEKO TC1-TC7 Joint Symposium on Man, Science and Measurement. Full text not available from this repository ...
CiteSeerX - Scientific documents that cite the following paper: Modeling and worst-case dimensioning of cluster-tree wireless sensor networks
Handbook of Research on Developments and Trends in Wireless Sensor Networks: From Principle to Practice Hai Jin Huazhong University of Science and Technology, China Wenbin Jiang Huazhong University of
DIP: Density Inference Protocol for wireless sensor networks and its application to density-unbiased statistics. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
Analysis of key aspects to manage Wireless Sensor Networks in Ambient Assisted Living environments Henar Martín, Ana M. Bernardos, Luca Bergesio, Paula Tarrío Data Processing Group (GPDS CEDITEC) ETSI
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While feeling honoured for being invited to write a paper dedicated to Prof. Yutaka Takahashi, I was enthusiastically wondering how to connect my current research on sensor networks to his excellent professional profile. The question or, better, the answer, was not simple. Considering, for instance, the field of Markov chains, as far as I know there are hardly works in literature that use this well-known modelling paradigm to represent the operational states of a sensor network. However, in a very recent work on time-driven sensor networks, I proposed the exponential randomization of the sense-and-transmit process, in order to avoid tight synchronization requirements while preserving good expectations in terms of lifetime and reconstruction quality. But$\ldots{}$oh, I said exponential, thats the connection! $\ldots{}$ So, specifically, in this paper a Markov chain is constructed to characterize the activity of a node in a time-driven sensor network based on stochastic (exponential) sampling. Since
Analyze, test, troubleshoot, and evaluate existing network systems, such as local area networks (LAN), wide area networks (WAN), cloud networks, servers, and other data communications networks. Perform network maintenance to ensure networks operate correctly with minimal interruption. Excludes Computer Network Architects (15-1241) and Network and Computer Systems Administrators (15-1244).. ...
Report Scope This report presents the forecast for wireless sensor devices for 2021 through 2026 based on estimated volume and manufacturers total revenues. These forecasts are further broken down by the various parameters that can be measured by the sensors, end applications and region.New York, May 24, 2021 (GLOBE NEWSWIRE) -- Reportlinker.com announces the release of the report Wireless Sensors: Technologies and Global Markets - https://www.reportlinker.com/p02354695/?utm_source=GNW Report Includes- 65 tables- An updated overview of global markets for the wireless sensor applications- Analyses of market trends, with data from 2020, estimates for 2021 and projections of compound annual growth rates (CAGRs) through 2026- Estimation of the market size for wireless sensor technologies, both in value and volumetric terms, and corresponding market share analysis by type of wireless sensor standard/technology, measurable parameter, application, and geographic region- Explanation of the technology and
Considering the environmental protection, forest fire becomes a more and more serious problem and requires more concerns. This paper provides an efficient method for fire monitoring and detection in forests using wireless sensor network technology. The proposed technique estimates the location of a sensor node based on the current set of hop-count values, which are collected through the anchor nodes broadcast. Our algorithm incorporates two salient features; grid-based output and event-triggering mechanism, to improve the accuracy while reducing the power consumption. Through the computer simulation, the output region obtained from our algorithm can always cover the target node. In addition, the algorithm was implemented and tested with a set of Crossbow sensors. Experimental results demonstrated the high feasibility and worked well in real environment.
The maternal body forms a wireless communication system with the embryo through the blood circulation system. Obviously, direct sampling from early embryos is damaging. Therefore, we detected changes in the concentrations of 30 signaling molecules in serum from the pregnant rats at the 14 time points, then the intercellular wireless communication network was established, to explore the regularity of signal communication between mother and fetus. We used liquid chip scanning technology to detect 30 signal molecules at 14 time points. Statistical analysis of the data yielded significant change signal molecules. According to the secretory cells and effector cells involved in signal molecules, the communication network of different stages were drawn by using Biograph software. The process could be divided into 4 periods including early, middle, late pregnancy, and postpartum. In early pregnancy, two immune transformations occur: (a) interleukin-10 (IL-10), interleukin-13 (IL-13) increased at day 5, which
A system and method for routing in a wireless mesh network providing a first device, which includes a first device transceiver, a first device memory unit that includes a first device first queue, a first device second queue and a first device table of neighboring devices, and a first device central processing unit. Such a system also includes a second device that includes a second device transceiver, a second device memory unit that includes a second device first queue, a second device second queue and a second device table of neighboring devices, and a second device central processing unit.
Location: ITC 1211, Time: 13:15. Abstract: The progress made in the field of Internet of Things (IoT) and Wireless Sensor Networks (WSN) are leading into the more comprehensive and integrated organization of the Cyber Physical Systems (CPS). Both the Cloud and Fog (or Edge-computing) plays important role in extending the capability of wireless sensor networks. This, in effect, enables the virtualization and support intelligence around the various services that the wireless sensor network can offer. Ultimately the goal of transparent coordination between the virtual and physical organizations could be achieved through the two ways communication between the cloud and the WSN using the IoT (or the Internet) connectivity. Timing and synchronization among the system components are of vital importance in coordinating the controlled actions with the events of a highly complex and distributed system. The field is directly associated with wide range of applications such as transportation, farming, ...
A method for pricing wireless communications services on a wireless network is described. A selection of a plurality of priorities available for transmitting a wireless communication transaction on a wireless network is provided, wherein the priority to be selected corresponds to the speed and allowable delay by which the transaction is to be transmitted. Transactions of lower priority are temporarily discontinued in favor of higher priority transactions when network capacity reaches a predetermined level. An amount is charged for the wireless communication transaction at a price corresponding to the priority and duration to be selected.