data inertial reference system adirs
Tài liệu Báo cáo khoa học: "Contrastive accent in a data-to-speech system" doc
... necessary to compare the data structures that are expressed by the generated sentences The fact that the input data structures of the system are organized in such a way that identical data types express ... viewpoint An alternative solution Fortunately, in data- to-speech systems like GoalGetter, the input of which is formed by typed and structured data, a simple principle can be used for determining ... contrastive accent in data- to-speech systems, which does not need a universal definition of alternative or parallel items Because the determination of contrast is based on the data expressed by generated...
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Wireless data technologies reference handbook phần 10 pps
... current DCE data communication equipment DCI default check initialization DCID destination channel identifier DH data- high rate DIAC dedicated inquiry access code DLC data link control DLCI data link ... DLCI data link connection identifier DLL data link layer DM data- medium rate DQPSK differential quadrature phase shift keying DSAP destination address field DTE data terminal equipment DTMF dual tone ... IWF 50 IPv4 Internet Protocol version Iridium System IS Intermediate System 92 ISM 147 IWF 50 E equipment identity register (EIR) 36 Erlang 18 ES End System 92 Ethereal 141 ETSI 31 EXOR 10 F February...
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Wireless data technologies reference handbook phần 1 potx
... of Congress Cataloging-in-Publication Data Winkler, Stefan Digital video quality : vision models and metrics / Stefan Winkler p cm Includes bibliographical references and index ISBN 0-470-02404-6 ... processing—Digital techniques Imaging systems—Image quality I Title TK6680.5.W55 2005 2004061588 006.60 96–dc22 British Library Cataloguing in Publication Data A catalogue record for this book ... The advent of digital imaging systems has exposed the limitations of the techniques traditionally used for quality assessment and control For conventional analog systems there are well-established...
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Wireless data technologies reference handbook phần 3 pptx
... facilitate handling such data rates Compression is the reduction of redundancy in data Generic lossless compression algorithms, which assure the perfect reconstruction of the initial data, could be used ... the visual system depends much more on the contrast of patterns than on their absolute light levels Visual information is processed in different pathways and channels in the visual system depending ... CODING AND COMPRESSION Visual data in general and video in particular require large amounts of bandwidth and storage space Uncompressed video at TV-resolution has typical data rates of a few hundred...
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Wireless data technologies reference handbook phần 4 potx
... transmission system The video sequence is first compressed by the encoder The resulting bitstream is packetized in the network adaptation layer, where a header containing sequencing and synchronization data ... stream When the losses affect syntactic information, not only the data relevant to the lost block are corrupted, but also any other data that depend on this syntactic information For example, an ... video The effect can be even more damaging when global data are corrupted An example of this is the timing information in an MPEG stream The system layer specification of MPEG imposes that the decoder...
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Wireless data technologies reference handbook phần 5 pps
... ðyi À "Þ2 ðxi À "Þ2 x y where " and " are the means of the respective data sets This assumes a x y linear relation between the data sets If this is not the case, nonlinear correlation coefficients ... as a data point ðxi ; yi Þ for which the prediction error is greater than a certain threshold, for example twice the standard deviation yi of the subjective rating differences for this data ... performance of different video quality assessment systems with respect to these sequences In the first phase, the emphasis was on out-of-service testing (i.e fullreference metrics) for production- and distribution-class...
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Wireless data technologies reference handbook phần 6 ppt
... approximations (solid curves) of psychophysical data (dots) (a) Contrast sensitivity data for blue-yellow gratings from Mullen (1985) (b) Contrast masking data for red-green gratings from Switkes et ... threshold data from spatio-temporal contrast sensitivity experiments for both color and luminance stimuli For the W-B channels, the weights are chosen so as to match contrast sensitivity data from ... (1979a,b) For the R-G and B-Y channels, similar data from Mullen (1985) or Kelly (1983) are used As an example, the fit to contrast sensitivity data for blue-yellow gratings is shown in Figure...
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Wireless data technologies reference handbook phần 7 pdf
... remaining discrepancies can be explained by the fact that the subjective data for some test conditions are relatively noisy (the data shown in Figure 5.2 belong to the most reliable conditions), making ... slope of the function (Nachmias, 1981) These two parameters are estimated from the psychophysical data; the variable x represents the noise amplitude in this procedure The resulting function can ... such a manner for two test conditions The detection threshold can now be determined from these data Assuming an ideal observer model as discussed in section 4.2.6, the detection threshold can...
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Wireless data technologies reference handbook phần 8 ppt
... which can easily be transmitted together with the video data They can thus be considered reduced -reference features 6.3.3 Results with VQEG Data The sharpness and colorfulness ratings were computed ... attributes is that they can be computed on the reference and the distorted sequences independently This means that it is not necessary to have the entire reference sequence available at the testing ... acuity of the human visual system depends on the velocity of the image on the retina: as the retinal image velocity increases, spatial acuity decreases The visual system addresses this problem...
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Wireless data technologies reference handbook phần 9 ppsx
... about the reference, which can be transmitted along with the compressed bitstream, or even none at all These reduced -reference or no -reference metrics would be much more versatile than full -reference ... full reference sequence In many 154 CLOSING REMARKS applications the reference sequence simply cannot be made available at the testing site, for example somewhere out in the network, or a reference ... accurately fit data from psychophysical experiments The PDM was evaluated by means of subjective experiments using natural images and video sequences It was validated using threshold data for color...
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Wireless data technologies reference handbook phần 1 pps
... Cataloging-in-Publication Data Dubendorf, Vern A Wireless data technologies / Vern A Dubendorf p cm Includes bibliographical references and index ISBN 0-470-84949-5 (alk paper) Wireless communication systems – ... Wireless Data Technologies Vern A Dubendorf IEEE, Massachusetts Health Data Consortium (MHDC), Mobile Healthcare Alliance (MOHCA) and The Council of Communications Advisors USA Wireless Data Technologies ... systems – handbooks, manuals, etc Data transmission systems – Handbooks, manuals, etc I Title TK5103.2 D83 2003 621.382 – dc21 British Library Cataloguing in Publication Data A catalogue record for...
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Wireless data technologies reference handbook phần 2 doc
... (DSSS) A direct sequence system uses a locally generated pseudo noise code to encode digital data to be transmitted The local code runs at a much higher rate than the data rate Data for transmission ... 11 A direct sequence system uses a locally generated pseudo noise code to encode digital data to be transmitted The local code runs at a much higher rate than the data rate Data for transmission ... Labs used multiple cells This original system was called the Advanced Mobile Phone System, or AMPS It is still in use throughout North America Similar systems, with slight variations, are Nordic...
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Wireless data technologies reference handbook phần 3 docx
... and data, the mobile also performs a number of very demanding tasks such as authentication, handover, encoding and channel encoding 4.2.2 The Base Station Subsystem (BSS) The base station subsystem ... subsystem uses Signaling System (SS7) If the MSC also has a gateway function for communicating with other networks, it is called Gateway MSC (GMSC) 4.2.4.2 The Home Location Register (HLR) A database ... protocols are needed to enable the flow of data and signaling between different GSM subsystems Figure 4.3 shows the interfaces that link the different GSM subsystems and the protocols used to communicate...
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Wireless data technologies reference handbook phần 4 docx
... Node-B to RNC connection • Security data in the network will be protected in data storages and while transmitting ciphering keys and authentication data in the system • Mechanism for upgrading security ... users Voice and data traffic to be carried Node B software features Required Node B optional features Requirements for special antenna systems Requirements for power and transmission systems The RNC ... mobile network theoretical capacity In CDMA systems interference, accepted and planned quality and grade of service determines the system capacity CDMA systems have what is know as soft capacity...
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Wireless data technologies reference handbook phần 5 potx
... layer in System B The information unit grows in 88 WIRELESS DATA NETWORKS System A Information units System B • • • Header Data 4 Data Header 3 Header Data Data Network Figure 8.2 Headers and data ... computer systems The data link layer in System A, as an example, communicates with the network layer of System A, the physical layer of System A, and the data link layer in System B DATA NETWORKS ... description, refer to Figure 8.2 If System A has data from a software application to send to System B, the data is passed to the application layer The application layer in System A then communicates any...
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Wireless data technologies reference handbook phần 6 pot
... looked at for implementation 132 WIRELESS DATA NETWORKS 25 23 24 21 19 17 22 20 18 15 16 11 14 12 10 SNR 10−15 dB, datarate > = 5.5 Mb SNR >15 dB, datarate = 11 Mb Figure 8.18 Total signal-to-noise ... connect to the data only’ ports on the PowerDsine Power Hub The PowerDsine Power Hub will add 48VDC to the spare pairs 4,5,7 and and then exit the Power Hub through the corresponding data and power’ ... the network infrastructure will be authenticated with AAA The database containing authorized network personnel will differ from the database containing the (ORiNOCO Wireless Client) subscribers...
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Wireless data technologies reference handbook phần 8 pptx
... systems are single bit RFID systems, able to convey their presence, but not having sufficient data capabilities to convey an identity Presently there are four major technologies used for EAS systems ... something is present (EAS) Different frequencies of the radio system result in different reading ranges and properties of the system RFID systems generally comprise two components, namely transponders ... accuracy of such systems is limited to fractions of a meter using electromagnetic propagation systems due to the limits in determining the transmission times with sufficient accuracy (A system called...
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Wireless data technologies reference handbook phần 9 pot
... protecting our systems Although incorrect, to many managers and users the security of data on wired network is an assumed fact They not however, extend this assumption to wireless data They instead ... takes the content of a data frame, its frame body, and passes it through an encryption algorithm The result then replaces the frame body of the data frame and is transmitted Data frames that are ... used to protect data from unauthorized persons There are at least two ways that data can be protected through encryption End-to-end encryption is the most thorough way to protect the data This means...
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Wireless Data Technologies reference phần 7 pptx
... (PIM) database maintaining personal calendars, address books, and to-do lists PIM databases in one personal 150 WIRELESS DATA NETWORKS Application Applications/Profiles Presentation Network Data ... attacks This is where an attacker will try to decode sniffed data packets If the intruding WLAN user manages to capture WEP 136 WIRELESS DATA NETWORKS encrypted 802.11b frames out of the air, the ... authentication process consists of two types of authentication: • Open System Authentication; • Shared Key Authentication With Open System Authentication (OSA), all negotiation is done in clear text...
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Tiểu luận môn CÔNG NGHỆ TRI THỨC VÀ ỨNG DỤNG Khai mỏ dữ liệu trong bảo mật hệ thống Data mining in system security
... Learning and Data Mining for Computer Security, Nhà xuất Springer, 2006 [3] Anoop Singhal, Data warehousing and Data mining techniques for cyber security, Nhà xuất Springer, 2007 [4] S.Prabhu, Data mining ... (knowlegde mining from databases), trích lọc liệu (knowlegde extraction), phân tích liệu hay mẫu (data/ pattern analysis), khảo cổ liệu (data archaeology), nạo vét liệu (data dredging) Khai mỏ ... CH1101001 Bài thu hoạch Khai mỏ liệu bảo mật hệ thống B NỘI DUNG I Khai mỏ liệu (Data mining) Giới thiệu Khai mỏ liệu (data mining) trình tìm kiếm, khai thác, phát mối tương quan, quy tắc, mô hình,...
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