CIICT 2009 Proceedings

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same size of annular-ring outer radius, themeasured return loss and axial ratio properties ofthree different circular polarized annular-ringantennas are plotted in the Fig 2 and Fig 3,respectively. It is found that three antennas havegood impedance bandwidth and axial-ratioperformances. The normalized spinning radiationpatterns in the XoZ plane for the three types areshown in Fig.4 (a), (b), and (c) at their individualcentre frequencies (1.562GHz, 1.556GHz,1.452Ghz), respectively.oyxwAxial Ratio (dB)5.04.54.03.53.02.52.01.51.00.50.0Antenna AAntenna BAntenna C1.44 1.46 1.48 1.50 1.52 1.54 1.56 1.58 1.60 1.62Frequency(GHz)Figure 3 Axial ratio for the three antennas0330030R2R2wL1R2R1-1030060wL1R1L1Feed PointR1Feed PointL2Feed Point-2027090-20(1) Antenna A (2) Antenna B (3) Antenna C-10240120Figure 1. Annular-Ring Patch with embedded stripsTable 1 The parameters of three annular-ring patch antennasembedded cross-stripsParameters(mm)No.R1 R2 W Feedpoint L1 L2Antenna A 24.8 8.2 1 (-7,7) 4 -Antenna B 24.8 7.8 2 (-6.6,6.6) 3.8 -Antenna C 24.8 12.8 2 (-3,3) 59 9.800-10-20-30-40-30-20-10300270240210330(a) 180015030609012000210150180(b)0033030S11(dB)-10-10-2030060-20Antenna AAntenna BAntenna C-30-20-102702401209002101501.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75Freuqency(GHz)180(c)Figure 2. S11 for three annular-ring patch antennasFigure 4. Spinning dipole radiation patternsfor the antennas at different frequencies12
Annular-ring Patch Antenna with EmbeddedCircular Patch and a Cross-slotted Ground PlaneIn order to miniaturize the annular-ring antenna, across-slot in the ground plane is employed tocompact annular-ring due to increased surfacecurrent path. To match the annular-ring patch, acircular patch placed in the centre of annular-ringpatch is used, as shown in Figure 5 (a). Figure 5 (b)shows the geometry of the proposed dualfrequencycircular polarized characteristics. Thesepatches are printed on FR4 substrate, ofpermittivity ε r = 4. 0 and thickness 1.52 mm. Thecrossed slot in the groundplane has unequal laterallengths, L1 and L2, with a slot width w. Thisstructure can excite two degenerate orthogonalmodes with equal amplitude and 90 degree phasedifference by tuning various parameters (R2, R3,L1, and L2) and right-hand circular polarization(RHCP) radiation is obtained. The optimizeddimensions selected are listed in table 2. In orderfor better matching of input impedance, a circularslot of radius R4 = 4mm is located at the centre ofthe cross slot. This antenna is excited by a 50 ohmcoaxial probe, and position of feedpoint along thediagonal line is also listed in table 2.WpFeed Point0R1R2(a)W2R20 Feed PointR1W1L2L1(b) The proposed dual-frequency CP antennaFigure 5. The geometries of the annular-ring patch antennasloaded by circular patch with cross-slotted ground planeFor the single frequency CP antenna, incomparison to the conventional circular patchantenna, the centre frequency of the proposedannular-ring patch antenna is smaller by 55 % forthe same substrate and outer circular radius. Themeasured 10 dB return loss impedance bandwidthfor the proposed antenna is approximately 65 MHz(6.1%) from 1.039 GHz to 1.094 GHz, as shown inFigure 6.R3W(a)(b)(c)xyz(b)0SD1L2W(c)S11(dB)-10Simulated resultMeasured resultL1-20(a) The proposed single-frequency CPantenna-300.85 0.90 0.95 1.00 1.05 1.10 1.15 1.20 1.25Frequency(GHz)Figure 6. Measured and simulated S11 for the singlefrequency CP antenna.13
Page 3 and 4: CIICT 2009Proceedings of the China-
Page 5 and 6: ForewordOn behalf of the organising
Page 7 and 8: TABLE OF CONTENTSSection 1A: ANTENN
Page 9 and 10: Section 3B: COMPUTER VISION 133A ne
Page 11 and 12: Section 1AANTENNAS AND CIRCUITS 11
Page 13 and 14: A block diagram of the platform is
Page 15 and 16: These two paths are averaged to red
Page 18 and 19: 4 mm -10 0 , -8 0 , -3 mm -8 0 , -6
Page 20 and 21: The results show that the separatio
Page 25 and 26: [4] C.Y.Sim, K.W.Lin, J.S.Row, Desi
Page 27 and 28: Interpretation of Spatial Movement
Page 30 and 31: III.DATA COLLECTIONAccurate spatial
Page 32 and 33: navigation. We define a walking are
Page 34 and 35: one’s body position, movement and
Page 36 and 37: world and will result in them being
Page 38 and 39: GPS/RFID/Self-contained Sensor Syst
Page 40 and 41: When the headway measures are equal
Page 42 and 43: [4] R.Liu, and S. Sinha, “Modelli
Page 44 and 45: Digital Audio Watermarking by Magni
Page 46 and 47: j 2 πβND = e(2)The frequency depe
Page 48 and 49: accurate in identifying the compone
Page 50 and 51: Furthermore, the decode experiment
Page 52 and 53: exists no spatial information of th
Page 54 and 55: iteration, one NMF for each frame.
Page 56 and 57: 7. CONCLUSIONSIn this paper we empl
Page 58 and 59: Dej 2 πβN= (1)The frequency depen
Page 60 and 61: length of x 1[n ], while it only ap
Page 62 and 63: Computing Modified Bessel functions
Page 64 and 65: From (9) both the numerator and den
Page 66 and 67: Section 2ARADIO SYSTEMS 156
Page 68 and 69: puncturing some parity RSDT columns
Page 70 and 71: [5] O'Droma M. S. and I. Ganchev.
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Administrations (CEPT) has proposed
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Figure 3 Proposed Test PlatformThe
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ACKNOWLEDGEMENTSThe authors wish to
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in an optimal fashion within that e
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whether the agent is in a learning
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needs of the experiments as the goa
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Section 2BGEOCOMPUTATION74
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describes the proposal put forward
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However, individual sensor measurem
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Position Of Test Phone CallPosition
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vol. 6, no. 3, pp. 30-38, 2007.[11]
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environment’. The report states t
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awareness communications about Twit
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2.2 Flight route planningFlight rou
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Spatial - temporal Simulation and P
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and serious ones in turn. Overall,
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[3] Cheng Weiming, Zhou Chenghu, an
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(a) 1973 (b) 1990 (c) 2000Figure 1.
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Effect of Hard RTOS on DPDC SCADA S
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Therefore, this solution is not fea
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already done on error free system o
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8 PROPOSED REAL-TIME OPERATING SYST
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HYBRID DECODING SCHEMES FOR TURBO-C
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L a(u k ) SOVA/Log-MAPLog-MAP Inter
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JavaScript code Fragment Analyzingf
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The external JavaScript itself, whi
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Section 3ACHANNELS AND PROPAGATION1
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The DCF is assumed to have negligib
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When m=6, the fluctuation have been
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Across a 5 MHz spectrum, the maximu
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Fig 6 shows the time variant charac
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In the system, the RF signal is dir
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of the different speeds UWB standar
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3dB higher for the laser biased at
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information for inter domain pre-au
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In addition, the opendiameter imple
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A new algorithm of edge detection b
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Control structure elements of shape
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3D TOOTH RECONSTRUCTIONWITH MULTIPL
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3.1 Topological structure and base
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Automatic Recognition of Head Movem
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threshold model λ is created to ca
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Dirt and Sparkle Detection for Film
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[4] T. Komatsu, T. Saito, “Detect
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Lightweight Signal Processing Algor
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a two element PIR sensor, to obtain
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the sensor node can readily be chec
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parameters may not lead to simple a
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0 (1 dR1)(1 dR2) 1[1]where d is t
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epeatability is normally defined as
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Integrated air quality monitoring:
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colour coded data that are used to
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Approximate Analysis of Fibre Delay
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Virtual Traffic SourceA*f( t)= A* e
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Section 4AANTENNAS AND CIRCUITS 217
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Primary SpiralSecondary SpiralCoCbL
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[4] A H Miklich, J X Przybysz, T J
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ased on the ABCD transmission matri
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RRe( Y3 _ LowFreq)=s(19)2 2 2Rs+ ω
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Section 4BeLearning180
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were investigated as important inpu
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Time [min]1009080706050403020100Loc
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Mean Rating for Different Encoding
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Billing Issues when Accessing Perso
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data consumed, for example 0.2€/M
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and returns billing plans the learn
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lecture size and the price per quan
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Section 5ARADIO SYSTEMS 2196
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and is uniformly distributed in the
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When the number of users is 2, and
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III.BLUETOOTH OPERATIONS IN SNIFF M
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traffic or for POLL and NULL packet
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Necessity for an Intelligent Bandwi
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Spruce: Spruce has been one of the
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Fig. 5 Comparison of bandwidth calc
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Section 5BCOMPUTER NETWORKS 2212
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2.1 CNFThe Content Navigating Funct
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User BGF PD-FE CSCF CNF(AS) HSSPeer
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5 ConclusionThis paper proposed an
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d( X − X ) + ( Y −Y)= ∑ ∑2
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Program Dependence Graph Generation
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CDGPDGFigure 2. Program Dependence
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Section 6ADIGITAL HOLOGRAPHY226
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away. Immediately behind this plane
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While this is not ideal as hair is
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Figure 12. 3-D visualisation of 200
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Speed up of Fresnel transforms for
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[9]L. Onural and H. Ozaktas, "Signa
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2009 China-Ireland International Co
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2009 China-Ireland International Co
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that enables the complete separatio
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developed in the literature to remo
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Section 6BINTELLIGENT SYSTEMS246
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the vectors remain just form the in
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d d x,y . If x and y don’t belon
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Investigating the Influence of Popu
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TABLE I.EXPERIMENTAL RESULTS FOR 26
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Intelligent Learning Systems Where
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FuzzyLogicBayesianReasoningClassifi
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AN IMPROVED HAPTIC ALGORITHM FOR VI
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Fig. 2. Proxy ImmersionFig. 1. Prox
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1Corpus Design Techniques for Irish
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