global system for mobile communications ppt

... personal health information system and the medical guidance. 1) Personal health information system: The personal health system can store physiological data and other information in the database ... Our system is also a mobile health system for the elderly with tailored services depending on their personal health condition. However, it is not only a remote and real-time monitoring system ... platform and medical knowledge database. Therefore, the main functions of our system are described below. ã A real-time mobile health monitoring system for the elderly to monitor the health condition...

Ngày tải lên: 28/03/2014, 19:21

Ngày tải lên: 22/06/2014, 19:20

... which are discussed extensively in Chapter 4. For one 2G system called cdmaOne and most 3G systems, e.g. the Universal Mobile Telecommunications System (UMTS), DS/CDMA was chosen as a basic multiple ... Communication Systems 25 2.2.1 Analogue First Generation Cellular Systems 25 2.2.2 Digital Second Generation Systems 25 2.3 First 3G Systems 27 2.3.1 Requirements for 3G 27 2.3.2 Evolution of 2G Systems ... Models for the Physical Layer and for User Traffic Generation 221 5.1 How to Account for the Physical Layer? 221 5.1.1 What to Account For and How? 221 5.1.2 Using Approximations for Error Performance...

Ngày tải lên: 02/03/2013, 16:59

... Network OMC AUC HLR MSC EIRVLR BSC BTS MS External PSTN & PDN N/W SS BSS Switching System Base Station System MS Mobile Station BTS Base transceiver System BSC Base Station Controller MSC Mobile Switching Center HLR Home Location ... messages ã International Mobile Equipment Identifier (IMEI) 38 GSM Architecture HLR VLR EIR AUC MSC B S C B S C SMSC PSTN VMSC Mobile Station GSM Air interface OMCR TRAU Base Station System Network and ... Circuit Switched Data EDGE = Enhanced Data rate for GSM Evolution UMTS = Universal Mobile Telecommunication System 10 sec 1 min 10 min 1 hour0 UMTS E/GPRS ISDN PSTN GSM webe-mail photo web photo e-mail web...

Ngày tải lên: 19/10/2013, 15:15

... bibliographical references and index. ISBN 0-471-48697-3 1. Wireless Internet. 2. Global system for mobile communications. 3. TCP/IP (Computer network protocol) I. Eardley, Philip. II. Burness, ... paths for them are handled by the SGSN. 1.2.3 IP for 3G What is meant by IP for 3G? 3G systems will include IP multimedia allowing the user to browse the Internet, send e-mails, and so forth. ... being captured for malicious use and impersonation of users. One, final, level of security is performed on the mobile equipment itself, as opposed to the mobile subscriber (for example, putting...

Ngày tải lên: 27/10/2013, 17:15

... Center for Telecom- munications and Information Systems Laboratory, Stanford University, Stanford, CA, June 1994. [2] Second workshop on smart antennas in wireless mobile communications, Center for ... selection performance analysis of a switched multi-beamantenna systemin mobile communications environments, Stanford, CA,July 1995. Second workshop on Smart Antennas in Wireless Mobile Communications. [28] ... Telecom- munications and Information Systems Laboratory, Stanford University, Stanford, CA, July 20-21, 1995. [3] Third workshop on smart antennas in wireless mobile communications, Center for Telecom- munications...

Ngày tải lên: 16/12/2013, 04:15

... the home and the office, (2) the ground fixed /mobile platform, and (3) the space platform. 4 RF MEMS Circuit Design for Wireless Communications Information  Voice  Broadband data  Messaging  Navigation  DBS  Internet  Video Wireless ... the information to be com- municated. Thus, the baseband section personalizes or defines the function performed by the wireless system (e.g., it makes it a telephone or a pager). Wireless SystemsA ... Standards for Wireless Local Loop Applications, IEEE Communications Maga- zine, May 2001, pp. 156162. [9] McGrath, F., et al., A 1.9 GHz GaAs Chip Set for the Personal Handyphone System,  IEEE...

Ngày tải lên: 19/01/2014, 20:20

... Point ‘ ‘ M M ’ ’   In 1993, for a specially In 1993, for a specially designed system (Madison designed system (Madison system for HDR brachytherapy system for HDR brachytherapy of uterine ... radium used. MANCHESTER SYSTEM FOR MANCHESTER SYSTEM FOR GYNECOLOGICAL APPLICATIONS GYNECOLOGICAL APPLICATIONS Anil Sharma, PhD Anil Sharma, PhD Manchester System Manchester System This concept ... therapy in Stockholm system, whereas Paris Stockholm system, whereas Paris system used external beam system used external beam therapy before the implant therapy before the implant

Ngày tải lên: 13/02/2014, 00:20

... of Strategies for Building an Innovation System for Knowledge City select set of international best practices for GDD. Finally, in task 3, we developed this outline of a strategy for GDD, incorporating ... companies obtain the benefits for which they qualify. Medium Easy Early 18 An Outline of Strategies for Building an Innovation System for Knowledge City Actions for GDD e role that government ... opportunities for them to meet. Networks will allow for more informal information sharing and will help generate ideas. Medium Medium Middle Table S.2—Continued 12 An Outline of Strategies for Building...

Ngày tải lên: 06/03/2014, 20:21

... bandwidth and storage requirement. B. System performance vs. network resource We next evaluate the performance of our system. One major metric of the performance of our system is the message success rate, ... Sprite, a simple, cheat-proof, credit- based system for stimulating cooperation among selfish nodes in mobile ad hoc networks. Our system provides incentive for mobile nodes to cooperate and report actions ... discussed in Sec- tion III, although our system provides incentive for cooperation by giving more credit for forwarding a message, whether or not to forward a specific message will depend on the...

Ngày tải lên: 15/03/2014, 04:20

Ngày tải lên: 18/03/2014, 02:20

... changing information. For example, users might want to issue continuous queries of the form: In order to handle a large number of users with diverse interests, a continuous query system must ... optimization efforts [CM86] [RC88] [Sel86] have focused on finding an optimal plan for a small number of similar queries. This approach is not applicable to a continuous query system for the following ... EXPERIMENTAL RESULTS We expect that for a continuous query system over the Internet, incremental group optimization will provide substantial improvement to system performance and scalability. In the following...

Ngày tải lên: 23/03/2014, 03:20

... Plan Generator Preprocessing (Lorel to OQL) Parsing HTML GUI Textual Interface API Applications Lore System Queries Select (OA3 = TRUE) Aggr (Exists, OA2, OA3) Select (OA2 = "CS" ) Scan (OA1,"Dept",OA2) Join Scan (OA0,"Member",OA1) Scan (Root,"DBGroup",OA0) Join Join Scan (OA0,"Member",OA1) Scan (Root,"DBGroup",OA0) Join From...

Ngày tải lên: 23/03/2014, 12:20

... Association for Computational Linguistics, pages 38–42, Jeju, Republic of Korea, 8-14 July 2012. c 2012 Association for Computational Linguistics Joint Learning of a Dual SMT System for Paraphrase ... data for this task and apply two SMT systems (dual SMT system) to translate the original sentences into another pivot language and then translate them back into the orig- inal language. For question ... employs two separately trained SMT systems the parameters of which are tuned for SMT scheme and therefore cannot directly op- timize the paraphrase purposes, for example, opti- mize the diversity...

Ngày tải lên: 23/03/2014, 14:20

... December 2007 embodies a global consensus on sustainable forest management and outlines future priorities in the form of four Global Objectives on Forests: ã reverse the loss of forest cover worldwide ... are interrelated; solutions for forest degradation and deforestation overlap with those for land degradation. The Global Mechanism uses national policy processes for coordination and reconciliation, ... 2009 90 Withashifttothesourcingofwoodfromplanted forestsandtheexclusionoflargetractsofnaturalforests fromwoodproduction,theselow-intensitymanagement systemshavebeenabandonedinmanycountries.The developmentoftechnologiesthatmadeitpossibleto processwoodirrespectiveofitsnaturalqualitiesandsize hasalsocontributedtoshiftingattentionawayfromthese systems. Researchinnaturalforestsnowfocusesmore onintegratingenvironmental,socialandeconomic objectivesaccordingtotheprinciplesofsustainable forestmanagement.Anumberofnational,regionaland internationalinitiativesfocusonthedevelopmentof criteriaandindicators for measuringprogresstowards sustainableforestmanagement,outliningthenatureof technologytobeadopted.Implementationofsustainable forestmanagementrequiressubstantialstrengthening ofthescienceandtechnologybase.Tothisend,much researchfocusesonecosystemstructureandfunctioning, thespatialandtemporallinkagesamongecosystem componentsandprocesses,andtheirrelationtothe immediateandlargersocialandeconomiccontext. However,implementationofsuchresearchremains achallenge(CIFOR,2004),especiallyindeveloping countries. Technologiesthatincreasethespeedatwhichvast amountsofspatialandtemporaldatacanbeanalysedand synthesizedarerevolutionizingforestmanagementin somecountriesandareexpectedtospread.Improvements intheresolutionofsatelliteimageryandthedevelopment ofsoftwaretointerpretitwillcontributetoreal-time monitoringofdeforestation,pestsanddiseases,res andotherpotentiallydevastatingevents.Geographic informationsystems(GISs)and global navigationsatellite systemsprovideforestmanagerswithincreasingly preciseinformationonthenatureandconditionofforest resources,whichcanbeprocessedandtransmittedrapidly (Box46).Thisinformationisalsovaluableasevidence for publicconsultation,vericationoflegalityandthird-party certication. Newmodellingandvisualizationsoftwarelinking GISsandremotesensingprovideshigh-qualitydigital simulationsoffutureforestlandscapestorevealchanges thatmightresultfromnaturalprocesses,suchasclimate alterations,orhumaninterventions,suchasplanting, thinningandharvesting.Suchsimulationsfacilitate communityengagementinforestmanagementdecision- making(SheppardandMeitner,2005). Anincreasinglyurgentareaofresearchrelatestothe adaptationofforeststoclimatechange. For example, geneticandenvironmentalvariationintreegrowthand healthisbeingstudiedinordertopredictpotentialimpacts ofclimatechangeonecosystemsandspeciesranges,to predictadaptiveresponsesoftreepopulationstoclimate andtoformulatenewstrategiestohelpforesttreesadapt tothechangingclimate(Wang et...

Ngày tải lên: 24/03/2014, 05:20

... Association for Computational Linguistics High Throughput Modularized NLP System for Clinical Text Serguei Pakhomov James Buntrock Patrick Duffy Mayo College of Medicine Division of Biomedical Infor- matics ... interface, and communications of components for natural language processing. The four main UIMA services include: acquisition, unstructured informa- tion analysis, structured information access, ... standardized no- menclatures and makes them available for subsequent information retrieval and data mining. The performance of the system was validated on a small collection of 351 documents partitioned...

Ngày tải lên: 31/03/2014, 03:20

Ngày tải lên: 01/06/2014, 09:38

Ngày tải lên: 21/06/2014, 16:20

Ngày tải lên: 21/06/2014, 22:20

Ngày tải lên: 22/06/2014, 22:20