a cognitive radio system using discrete wavelet multitone modulation
List the components of a radio system
Ngày tải lên :
13/09/2012, 10:52
... components of a radio system
ã
Describe how different factors affect the design of a
radio system
ã
Explain the radio frequency spectrum
17
Multiple Access (continued)
9
Antennas
ã
Transmit or ... communication today
ã
Except for broadcast radio and television
ã
Half-duplex transmission
Sends data in both directions
ã
But only one way at a time
Used in consumer devices such as citizens band ... when receiving the signal
ã
Attenuation
A loss of signal strength
ã
Multipath distortion
As a radio signal is transmitted, the electromagnetic
waves spread out
13
Multiple Access (continued)
ã
Time...
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Tài liệu Báo cáo khoa học: "Using Automatically Transcribed Dialogs to Learn User Models in a Spoken Dialog System" doc
Ngày tải lên :
20/02/2014, 09:20
... θ be the maximum likelihood
estimate using automatically transcribed data,
i.e., θ
asu
=
e
K
D
as
P
a
e
K
D
as
. This approach ignores
transcription errors and assumes that user be-
havior depends ... 08540, USA
usyed@cs.princeton.edu
Jason D. Williams
Shannon Laboratory
AT&T Labs — Research
Florham Park, NJ 07932, USA
jdw@research.att.com
Abstract
We use an EM algorithm to learn user ... expectation and its
maximization are easy to compute. This is because
our dialog model has a chain-like structure that
closely resembles an Hidden Markov Model, so a
forward-backward procedure can...
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- 0
Tài liệu Báo cáo khoa học: "Paraphrasing Using Given and New Information in a Question-Answer System" docx
Ngày tải lên :
21/02/2014, 20:20
... Reptuentatton in
Natural Language Inferenctng', to
appear
in IJCAI
Proceedinqs
79.
13. [KAMAN 79]. Kaplan, S. J., "Cooperative Responses
from a Portable Natural Larquage Data Base ... used by the paraphraser to
generate questions.
I ã INTRO~ION
In a natural language interface to a database query
system, a paraphraser can be used to ensure that the
system has correctly understood ... Pennsylvania, Philadelphia, Pa. 19104
ABSTRACT: The design and implementation of a paraphrase
component for a natural language questlon-answer system
(CO-OP) is presented. A major point made is the...
- 6
- 532
- 0
Báo cáo " Development of a spectrometry system Using lock-in amplification technique " doc
Ngày tải lên :
05/03/2014, 14:20
... Key board, display board, Analog Input board,
DSP Logic board and CPU and Power supply board. The DSP logic board takes a
digital input from the A/ D converter on the Analog Input board and perform ... spectroscopy
has a very important role in studies of optical properties of materials. Our goal
is to build a spectrometry system to measure weak optical signals such as
Raman scattering and surface SH ... He-Ne laser instead of Ion Argon laser. The Raman
excitation by He-Ne laser showed many advantages in comparison with Argon laser
excitation.
Acknowledgements: This work is supported by the Natural...
- 6
- 524
- 0
Therapeutic ultrasound as a potential male contraceptive: power, frequency and temperature required to deplete rat testes of meiotic cells and epididymides of sperm determined using a commercially available system doc
Ngày tải lên :
05/03/2014, 17:20
... GraphPad Prism version 5.0 d, GraphPad
Software, San Diego California USA [6]. If data failed
Bartlett’s test for equal variances, significance was evalu-
ated usi ng the Kruskal-Wallis test and ... determined using a
commercially available system
James K Tsuruta
1*
, Paul A Dayton
3
, Caterina M Gallippi
3
, Michael G O’Rand
1,2
, Michael A Streicker
4
,
Ryan C Gessner
3
, Thomas S Gregory
3,6
, ... counts and motilities. Untreated, retired breeders
served as untreated controls. Sham-treated animals
underwent all preparations for ultrasound treatment as
treated animals: anesthesia was administered...
- 15
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Báo cáo khoa học: "A Speech-based Just-in-Time Retrieval System using Semantic Search" doc
Ngày tải lên :
07/03/2014, 22:20
... Search
Andrei Popescu-Belis, Majid Yazdani, Alexandre Nanchen, and Philip N. Garner
Idiap Research Institute
Rue Marconi 19, CP 592
1920 Martigny, Switzerland
{apbelis,myazdani,ananchen,pgarner}@idiap.ch
Abstract
The ... semantic relatedness using
Wikipedia. In AAAI 2006 (21st National Conference
on Artificial Intelligence), pages 1419–1424, Boston,
MA.
Majid Yazdani and Andrei Popescu-Belis. 2010. A ran-
dom walk ... information
about it.
4.5 The User Interface (UI)
The main goal of the UI is to make available all
information produced by the system, in a config-
urable way, allowing users to see a larger or smaller
amount...
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Báo cáo khoa học: "A Chinese-English Organization Name Translation System Using Heuristic Web Mining and Asymmetric Alignment" pot
Ngày tải lên :
08/03/2014, 00:20
... Multilingual
and Mixed-language Named Entity Recognition
Masaaki Nagata, Teruka Saito, and Kenji Suzuki.
2001. Using the Web as a Bilingual Dictionary. In
Proc. of ACL 2001 Workshop on Data-driven ... Organization Name Translation System Using
Heuristic Web Mining and Asymmetric Alignment
Fan Yang, Jun Zhao,
Kang Liu
National Laboratory of Pattern Recognition
Institute of Automation, ... in Machine Translation.
David Chiang. 2005. A hierarchical phrase-based
model for statistical machine translation. In Proc. of
ACL 2005.
Conrad Chen, Hsin-His Chen. 2006. A High-Accurate...
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- 0
Báo cáo khoa học: "A Statistical Spoken Dialogue System using Complex User Goals and Value Directed Compression" pptx
Ngày tải lên :
08/03/2014, 21:20
... user goals adopted to make sys-
tems computationally tractable.
Work in dialogue system evaluation, e.g.
Walker et al. (2004) and Lemon et al. (2006),
shows that real user goals are generally sets ... our
knowledge such a combination of goals with dif-
ferent attribute values cannot be straightforwardly
handled by comparable state-of-the-art statistical
SDSs which appear in the literature.
Crook and Lemon ... observation probabilities, and R is
the reward function. Since it iteratively projects
the rewards associated with each state and action
using the state transition and observation proba-
bilities,...
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- 0
Building a Blog System using Yii pot
Ngày tải lên :
10/03/2014, 17:20
... GET[’tag’]);
$dataProvider=new CActiveDataProvider(’Post’, array(
’pagination’=>array(
’pageSize’=>5,
),
’criteria’=>$criteria,
));
$this->render(’index’,array(
’dataProvider’=>$dataProvider,
));
}
In ... 27
’users’=>array(’@’),
),
array(’deny’, // deny all users
’users’=>array(’*’),
),
);
}
The above rules state that all users can access the index and view actions, and authenti-
cated users can access ... create and update Operations
The create and update operations are very similar. They both need to display an HTML
form to collect user inputs, validate them, and save them into database. The main...
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Báo cáo khoa học: Construction of a novel detection system for protein–protein interactions using yeast G-protein signaling pdf
Ngày tải lên :
16/03/2014, 01:20
... GGGGCTCGAGGTTTTATATTTGTTGTAAAA
25 ATATTATATATATATATAGGGTCGTATATA
26 AAATTATAGAAAGCAGTAGA TAAAACAATG
27 CTTCGAAGAATATACTAAAAAATGAGCAGG
CAAGATAAACGAAGGCAAAGTTCAATTCA
TCATTTTTTTTTTATTCTTTT
28 GGAGCCATAATGACAGCAGT
Detection ... TTCCGAATTCTCATTTACCCGGAGACAGGG
15 CCCCGCGGCCGCTGACACCGATTATTTAAA
16 TTTTGAGCTCGGAGCCATAATGACAGCAGT
17 TTTTGTCGACATGGCGCAACACGATGAAGC
CGTAGACAAC
18 GGGGGGATCCTTACATAAGCGTACAACAAA
CACTATTTGATTTCGGCGCCTGAGCATCA
TTTAGCTTTTT
19 ... plasmids and yeast
strains.
Primer number Sequence (5Â-to3Â)
1 GCCCGTCGACATATTATATATATATATAGG
2 CCCGCTCGAGTCTTAGAATTATTGAGAACG
3 GCCCGGATCCTGATAGTAATAGAATCCAAA
4 CCCCGAATTCAAATTATAGAAAGCAGTAGA
5...
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- 0
Báo cáo khoa học: Identification of sodium salicylate as an hsp inducer using a simple screening system for stress response modulators in mammalian cells pptx
Ngày tải lên :
17/03/2014, 10:20
... Pharmaceutical University, 5 Nakauchi-cho, Misasagi,
Yamashina-ku, Kyoto 607-8414, Japan.
Fax: + 81 75 595 4758, Tel.: + 81 75 595 4653,
E-mail: hatayama@mb.kyoto-phu.ac.jp
Abbreviations: SA, ... arachidonic
acid to prostaglandins [9] and inhibition of the activation of
transcription factor nuclear factor-kappa B [10], have been
made to describe how SA exerts its anti-inflammatory effects
and also ... heat shock
proteins such as Hsp10 5a and Hsp70 in various mammalian
cells.
Enhancement of thermoresistance of cells by SA
Upon exposure to a sublethal heat treatment, mammalian
cells acquire transient...
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Using iOS 5: Your Guide to a Great Mobile System
Ngày tải lên :
19/03/2014, 23:44
... it
means that it can get a lot of information for you.
You can search for a type of place (Italian
restaurants, for example) or a specific location,
and Siri can show it to you on a map. Siri also
talks ... date, regardless of
which list they’re in.
Safari
Safari is by and large the same browser that you
know and love (or hate) – iOS 5 hasn’t changed it
a whole lot. Having said that, there are a ... or any details that you might
enter. You can enable it from the Safari section of
Preferences. Once activated the Safari app changes
from blue to black.
Finally, the iPad and iPad 2 have finally...
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DISCRETE WAVELET TRANSFORMS - A COMPENDIUM OF NEW APPROACHES AND RECENT APPLICATIONS pdf
Ngày tải lên :
23/03/2014, 03:20
... Chakravarty, Rajkumar Patra and
Rohit Raja
Chapter 6 Density Estimation and Wavelet Thresholding via Bayesian
Methods: A Wavelet Probability Band and Related Metrics
Approach to Assess Agitation and ... Transforms
Techniques 27
Awad Kh. Al-Asmari and Farhan A. Al-Enizi
Chapter 3 DWT Based Resolution Enhancement of Video Sequences 45
Sara Izadpanahi, Cagri Ozcinar, Gholamreza Anbarjafari and Hasan
Demirel
Section ... Tilendra Shishir Shishir Sinha,
Rajkumar Patra, Rohit Raja, Devanshu Chakravarty, Irene Lena Hudson, In Kang, Andrew Rudge, J. Geoffrey Chase,
Gholamreza Anbarjafari, Hasan Demirel, Sara Izadpenahi,...
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