Xem 1-20 trên 46 kết quả Geographical network
  • Wireless sensor nodes are small, embedded computing devices that interface with sensors/ actuators and communicate using short-range wireless transmitters. Such nodes act autonomously, but cooperatively to form a logical network, in which data packets are routed hop-by-hop towards management nodes, typically called sinks or base stations. A Wireless Sensor Network (WSN) comprises of a potentially large set of nodes that may be distributed over a wide geographical area, indoor or outdoor

    pdf369p nghiasimon 22-09-2012 41 19   Download

  • GSM is a Second Generation (2G) digital radio cellular network Time Division Multiplexing / Multiple access TDM/TDMA) are employed .Capacity necessary to transmit appropriate data signals between two access points creating an interface to the network

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  • What must computers on a network have in common in order to directly communicate with each other? A network that connects workstations, terminals, and other devices a geographically limitted area. A network that connects workstations, terminals, and other devices a large metropolitan area. A network that serves users across a geographically large area and often uses transmission devices provided by a common carrier.

    doc96p dhsgcntt 21-04-2010 220 152   Download

  • 1.Connect devices that are separated by a broader geographical area. 2.Use the services of carriers, such as telephone companies, network providers… 3.Use serial connections.A VPN is an encrypted connection between private networks over a public network such as the Internet. Instead of using a dedicated Layer 2 connection such as a leased line, a VPN uses virtual connections called VPN tunnels, which are routed through the Internet from the private network of the company to the remote site or employee host.

    pdf39p mrdvad11 12-03-2013 65 49   Download

  • The Oracle Spatial User’s Guide and Reference provides usage and reference information for indexing and storing spatial data and for developing spatial applications using Oracle Spatial and Oracle Locator. Oracle Spatial requires the Enterprise Edition of Oracle Database 10g. It is a foundation for the deployment of enterprise-wide spatial information systems, and Web-based and wireless location-based applications requiring complex spatial data management. Oracle Locator is a feature of the Standard and Enterprise Editions of Oracle Database 10g.

    pdf602p thuxuan 03-08-2009 65 9   Download

  • The Campus-RS™ REX2 (Remote Ethernet eXpress) is an interface module that installs directly into a Campus-RS remote device or Campus-RS Star concentrator and provides interconnectivity of geographically dispersed Ethernet LANs within a private enterprise network. The Campus-RS REX2 functions as a full-bandwidth Ethernet remote bridge, or a static or dynamic IP router, using the existing copper infrastructure as the transmission medium to provide repeaterless connectivity between LAN segments up to 4.6 Mbps....

    pdf2p thuyvan 13-08-2009 94 9   Download

  • This edited collection had its beginnings in conversations with Jan Monk and Janet Momsen who encouraged us to contribute to their series on the geographical aspects of women’s lives. Their support and helpful comments were invaluable during the long process of producing the volume.

    pdf305p kimngan_1 09-11-2012 29 9   Download

  • This lab exercise focuses on the basics of IP subnet masks and their use with TCP/IP networks. The subnet mask can be used to split up an existing network into subnetworks, or subnets. Some of the primary reasons for subnetting are the following: • Reduce the size of the broadcast domains, which creates smaller networks with less traffic • Allow LANs in different geographical locations to communicate through routers • Provide improved security by separating one LAN from another Routers separate subnets, and determine when a packet can go from one subnet to another.

    pdf1p trungha 28-08-2009 88 8   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Secure Geographic Routing in Ad Hoc and Wireless Sensor Networks

    pdf12p dauphong14 13-02-2012 20 7   Download

  • Geographic Information System (GIS) analysis is basically spatial problem-solving. It can be quite challenging at first, especially if you get bogged down in syntax and details. The hardest part is to conceptually understand the problem, and the GIS tools available to solve your problem. This book will help you understand conceptually how various GIS tools work. So for now, forget about workspaces, libraries, spatial database engines, dangling nodes, fuzzy tolerances, requests and instances....

    pdf293p 951628473 07-05-2012 44 7   Download

  • Geographic Information Systems (GIS) has emerged as one of the most important and widely used softwares for the social scientists in last two decades. Economists, sociologists, political scientists, public administrators, and geographers alike use GIS for capturing, storing, analyzing, and presenting spatially referenced socio-economic data. Election campaigns have been using GIS in a rapidly increasing manner. It has also been substantially used by urban and regional planners, natural resources scientists, and civil engineers.

    pdf384p dontetvui 21-01-2013 14 5   Download

  • This lab connects two routers together using directly attached cables to simulate a WAN link. This allows the routers to be configured and tested as though they were geographically separated. This simulated WAN link takes the place of the service providers network and can be thought of as a CSU/DSU eliminator. The first steps involve finding out what kind of connections are on the router and what kind of cables are needed

    pdf3p thanhha 27-08-2009 56 4   Download

  • Wireless cellular networks are an integral part of modern telecommunication systems. Today it is hard to imagine our life without the use of such networks. Nevertheless, the development, implementation and operation of these networks require engineers and scientists to address a number of interrelated problems.

    pdf0p ktcn_1 10-07-2012 22 4   Download

  • When a transmission violating your enforced security policies is detected by a Sensor, the Sensor compiles information about the offending transmission and sends this “attack” data to the Manager in the form of an alert. Alert details include transmission data such as, source and destination IP addresses in the packet, as well as security analysis information (performed by the Sensor) such as attack type and severity. Alerts are backed up to the database and archived in order of occurrence.

    pdf30p cao_can 02-01-2013 28 4   Download

  • Managing teams can be a challenge. When you try to manage teams across different geographical regions and perhaps time zones, you have a situation that can be difficult for even the best manager. Remote teams have become more common in the workplace. They satisfy the need for accessing specialized expertise at a cost savings. With advances in technology, there is now a broad array of communication methods to enable remote teams to function more smoothly and cohesively.

    pdf6p huyhoang 06-08-2009 22 3   Download

  • All these new layers, devices and traffic require management and protection just as they would if they were physical machines and networks. But what do auditors need to know in order to successfully locate and ensure secure processes around sensitive data traversing this new vir- tual environment? Unfortunately, at this early stage of adoption, there is little guidance within the regulatory frameworks on how to address new audit issues presented with virtualization. The purpose of this paper is to help IT managers and auditors...

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  • The 1990’s were a troubled decade for the Big Three TV networks, NBC, ABC, and CBS. For the first time since they began keeping records, their combined prime-time ratings dropped below 50 percent. There were many reasons for this change, but the most important one is that TV and the other older media are being challenged by the Internet and other technologies that offer an expanded range of information and entertainment services. Newspaper (print) Other media are similarly affected.

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  • Data reported in this paper are provided by Thomson Reuters ScholarOne Manuscripts™.* ScholarOne’s customer base is reflective of the global scholarly publishing community, representing journals of all sizes and scopes, from high Impact Factor international titles to select niche, society, or regional journals. The aggregate dataset for analysis includes submissions, acceptances, rejections, and time-to-decision for 4,200 journals published by over 365 societies, publishers, and university presses. This encompasses over 3 million submissions during the analysis period 2005–2010.

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  • In order to obtain the sample, the universe of municipalities was those with little more than 100.000 individuals. The municipalities were classified in 25 strata according to geographical region, population size living in the urban part of the municipality, the value of synthetic index for quality of life (QLI) as well as education and health infrastructure. 6 Two treatment municipalities were randomly selected within each stratum among the municipalities participating in Familias en Accion.

    pdf33p can_thai 12-12-2012 25 2   Download

  • We know how to fix the problem of childhood hunger, and we have an opportunity now to build a prosperous future for us all by doing that. Over the past century Americans have built marvelous networks and systems of infrastructure that are necessary to our economy and quality of life. Through creativity, inventiveness, ingenuity and hard work we have made our country a model of success in many areas. For example, we have built a national power grid, telecommunication systems, water systems, transportation systems, and internet systems that are peerless, to list just a few.

    pdf36p can_thai 12-12-2012 17 2   Download

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