Dissertationen zum Thema „Target shift“
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Naeem, Asad. „Single and multiple target tracking via hybrid mean shift/particle filter algorithms“. Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/12699/.
Der volle Inhalt der QuelleKalkan, Yilmaz. „Target Localization Methods For Frequency-only Mimo Radar“. Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614805/index.pdf.
Der volle Inhalt der QuelleTarget Localization via Doppler Frequencies - TLDF"
and it can be used for not only radar but also all frequency-based localization systems such as Sonar or Wireless Sensor Networks. Besides the TLDF method, two alternative target position estimation methods are proposed as well. These methods are based on the Doppler frequencies, but they requires the target velocity vector to be known. These methods are referred to as "
Target Localization via Doppler Frequencies and Target Velocity - TLD&
V methods"
and can be divided two sub-methods. One of them is based on the derivatives of the Doppler Frequencies and hence it is called as "
Derivated Doppler - TLD&
V-DD method"
. The second method uses the Maximum Likelihood (ML) principle with grid search, hence it is referred to as "
Sub-ML, TLD&
V-subML method"
. The more realistic signal model for ground based, widely separated MIMO radar is formed as including Swerling target fluctuations and the Doppler frequencies. The Cramer-Rao Bounds (CRB) are derived for the target position and the target velocity estimations for this signal model. After the received signal is constructed, the Doppler frequencies are estimated by using the DFT based periodogram spectral estimator. Then, the estimated Doppler frequencies are collected in a fusion center to localize the target. Finally, the multiple targets localization problem is investigated for frequency-only MIMO radar and a new data association method is proposed. By using the TLDF method, the validity of the method is simulated not only for the targets which are moving linearly but also for the maneuvering targets. The proposed methods can localize the target and estimate the velocity of the target with less error according to the traditional isodoppler based method. Moreover, these methods are superior than the traditional method with respect to the computational complexity. By using the simulations with MATLAB, the superiorities of the proposed methods to the traditional method are shown.
Lillkung, Lilianna. „À la recherche de la métaphore scientifique - termes médicaux en traduction“. Thesis, Linnéuniversitetet, Institutionen för språk (SPR), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-37626.
Der volle Inhalt der QuelleGogolashvili, Davit. „Global and local Kernel methods for dataset shift, scalable inference and optimization“. Electronic Thesis or Diss., Sorbonne université, 2022. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2022SORUS363v2.pdf.
Der volle Inhalt der QuelleIn many real world problems, the training data and test data have different distributions. The most common settings for dataset shift often considered in the literature are covariate shift and target shift. In this thesis, we investigate nonparametric models applied to the dataset shift scenario. We develop a novel framework to accelerate Gaussian process regression. In particular, we consider localization kernels at each data point to down-weigh the contributions from other data points that are far away, and we derive the GPR model stemming from the application of such localization operation. We propose a new method for estimating the minimizer and the minimum value of a smooth and strongly convex regression function from the observations contaminated by random noise
Hellner, Joakim. „Introducing quality assessment and efficient management of cellular thermal shift assay mass spectrometry data“. Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-311792.
Der volle Inhalt der QuelleWestling, Måns. „A Qualitative Descriptive Translation Study of Shakespeare's Romeo and Juliet“. Thesis, Stockholm University, Department of English, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8055.
Der volle Inhalt der QuelleThis essay is a qualitative descriptive translation study concerning two translations of Shakespeare’s Romeo and Juliet into Swedish. The purpose of the study is to investigate the translational behaviour of the translators and the translation norms that govern this behaviour.
By thoroughly analysing stretches of the play, the study will attempt to locate translation shifts (linguistic changes) that occur in the translation from the source text to the target text. These changes are connected with the translators’ fidelity towards e.g. the metre of the verse or the sense transfer of puns. The analysis also comprises a survey of the translation norms that the translators adhere to. These norms, stated by the translators themselves, are connected to their translation approach. Thus, the study will reveal the differences of translation behaviour and analyse them from a wider perspective. The translations were made around 1840 and in 1982, respectively. The considerable space in time in itself suggests that linguistic differences will occur. However, the study will also find differences as regards the purposes of the translations. The older translation appears to be performed in a tradition of fidelity to the written text and its literary qualities, whereas the modern translation clearly has the purpose of being used for the stage performance. The latter is stated by the translator himself, who also argues that Shakespeare is to be considered drama and not literature.
Darienzo, Matteo. „Detection and estimation of stage-discharge rating shifts for retrospective and real-time streamflow quantification“. Thesis, Université Grenoble Alpes, 2021. http://www.theses.fr/2021GRALU006.
Der volle Inhalt der QuelleRiver discharge time series are established using "rating curves", which are models with stage as input and discharge as output. Unfortunately, many hydrometric stations have an unstable stage-discharge relation, particularly because of the change in the river bed during floods. These "rating shifts" pose a problem both for the establishment of long-term hydrological series (retrospective analysis) and for the delivery of real-time data, for example for flood forecasting, with quantified and reliable uncertainties. The existing methods for updating the rating curve are based on a statistical analysis of past calibration data (the gaugings) or on empirical rules. This thesis aims at developing some original methods for the automatic detection of rating shifts and the estimation of their magnitude in both retrospective and real time: a method of segmentation of the residuals between the gaugings and a base rating curve, an analysis of the stage recessions and a method for detecting potential shifts from an indicator available in real time (e.g. cumulative sediment transport). The probabilistic approach allows on the one hand to take into account the uncertainty of the information on the shift and on the other hand to quantify the uncertainties of the calculated streamflow. The combination of the three methods has been applied to the Ardèche at Meyras, France, which shows net shifts after each major flood. Good detection and estimation of the rating shift has been observed retrospectively and in real time. The method is generic and, after further validation, operationally applicable to other sites
Gorsedene, Christa. „A heuristic and HSSI exploration of experiencing interplay between spiritual guidance and synchronicity within person-centred encounters“. Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/a-heuristic-and-hssi-exploration-of-experiencing-interplay-between-spiritual-guidance-and-synchronicity-within-personcentred-encounters(3a4e4301-d034-4d71-8b40-5f4b8b5779c8).html.
Der volle Inhalt der QuelleLin, Yong-Yuan, und 林永淵. „Video Object Tracking using Mean-Shift Algorithm with Adaptive Target Model“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/79669014619972281165.
Der volle Inhalt der Quelle國立東華大學
資訊工程學系
94
We present a video object tracking algorithm based on a mean-shift algorithm with an adaptive target model that can distinguish a target object from its surrounding background. The target model records a relative likelihood ratio of the feature attributions between the target object and the surrounding background. Moreover, the target model is dynamically updated to reflect the changes of the probability density function of the tracking object. An energy-log-likelihood ratio test is applied to compute the confidences of new features in the video sequence. A segmentation algorithm is designed to estimate break points located on the object contour using the distribution of likelihood ratios. The experimental results demonstrate that the proposed tracking algorithm can (1) effectively discriminate target object from the surrounding background, (2) robustly and accurately track target object, (3) estimate and conserve object contour, and (4) adaptively learn the new appearance of target object.
Kun-Yo, Lin. „Automatic Target Recognition Based on High Resolution Range Profiles with Unknown Circular Range Shift“. 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0009-2607200617223500.
Der volle Inhalt der QuelleWang, Pang-Ta, und 王邦達. „Unsupervised Target Classification and Estimation of The Orientation Angle Shift Using Fully Polarimetric SAR“. Thesis, 2004. http://ndltd.ncl.edu.tw/handle/95179442599975794674.
Der volle Inhalt der Quelle國立中央大學
太空科學研究所
92
Abstract This study included two parts of using fully Polarimetric Synthetic Aperture Radar (POLSAR) data. First, classification of Earth terrain components using a POLSAR image which is one of the important applications of Radar Polarimetric; second, we used POLSAR to measure azimuth slopes that are related to shifts in polarization orientation angle. Polarization orientation angle is one of the parameters among the wealth of polarimetric information when analyzing POLSAR data. At first, we used a method for unsupervised classification of terrain types and man-made objects by POLSAR data. This technique is a combination of the unsupervised classification based on Polarimetric target decomposition and the maximum likelihood classifier based on the complex Wishart distribution for the Polarimetric covariance matrix. This unsupervised classification based on the use of two-dimensional Entropy (H) / Alpha angle (α) classification plane, where all random scattering mechanisms can be represented. Then, we appended the Anisotropy (A) information to the unsupervised classification combined Wishart classifier. After comparing the Au-Gu farm ground truth map with our classification result, the experiment results agreed with ground truth map. We introduced the Anisotropy (A) information, and found it allowed the improvement of the capability to distinguish between different classes whose cluster centers end in the same Entropy (H) – Alpha (α) zone. Second, we used POLSAR to measure azimuth slopes. When SAR images a rugged terrain area, surface slopes have two main effects on the SAR image response. The first is the change of radar cross section per unit image area, and the second is that polarization states are also affected, because azimuth slopes induce polarization orientation changes. We used the polarization characteristic, and the circular Polarization algorithm to estimate polarization orientation angle shifts. For comparison, the orientation angles from a digital elevation model (DEM) generated using C-band interferometry. However, the experiment results in TAIWAN POLSAR data sets were very noisy. At last, we listed and discussed some possible sources that affected the experiment results.
Lin, Kun-Yo, und 林昆佑. „Automatic Target Recognition Based on High Resolution Range Profiles with Unknown Circular Range Shift“. Thesis, 2006. http://ndltd.ncl.edu.tw/handle/67431811745553917573.
Der volle Inhalt der Quelle元智大學
通訊工程學系
94
In this thesis, an automatic aircraft target recognition (ATR) framework is presented, which is based on the high resolution range profiles (HRRP) of aircraft targets. This work is divided into two major parts. First, we consider the generation of the HRRP, which includes the modeling and simulation of radar cross section (RCS), the design of step frequency waveform (SFW), and IFFT processing for HRRP synthesis. In practice, a possible circular shift of the received HRRP relative to the template HRRPs in target library may exist. In such a situation, we resort to the statistical classification technique to develop ATR algorithms. We propose two kind of recognition algorithms including maximum a posteriori (MAP) decision rule, and quadratic classifier. In MAP criterion, we use the concept of signal space. we adopt the Gram-Schmidt orthogonalization (GSO) procedure to construct a signal space, and then project the received HRRP onto the signal space. Finally, the target classification can be done in terms of MAP decision rule. Generally speaking, the standard approaches for ATR use the entire range profile as the feature vector. Training the classifier is simply a statistical parameter problem. The estimation of the parameters is based on the observation of the target over a small range of viewing aspects. And the quadratic classifier is the most popular choice. Simulation results are also included to demonstrate the feasibility of these approaches.
Kumar, Vikash. „Mitigating Domain Shift via Self-training in Single and Multi-target Unsupervised Domain Adaptation“. Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5910.
Der volle Inhalt der QuelleZheng, Yuan-Song, und 鄭源松. „A Real-time Embedded Implementation of Modified Mean-shift Algorithm for Multi-target Visual Tracking“. Thesis, 2009. http://ndltd.ncl.edu.tw/handle/27642622059188183782.
Der volle Inhalt der QuelleJardak, Seifallah. „Colocated MIMO Radar: Beamforming, Waveform design, and Target Parameter Estimation“. Thesis, 2014. http://hdl.handle.net/10754/317255.
Der volle Inhalt der QuelleLiu, Jie-Hua, und 劉玠樺. „An Anti-collision Detection Method for Vehicle Doors Opening Using Multilevel Target Region Estimation and Adaptive Scale Mean Shift Tracking“. Thesis, 2014. http://ndltd.ncl.edu.tw/handle/49970848803933265359.
Der volle Inhalt der Quelle國立中興大學
資訊科學與工程學系
102
To avoid the car accident due to vehicle doors opening, we need an anti-collision detection method. Our anti-collision detection method uses “object tracking” on image processing with the video from the camera on the left rear-view mirror of the vehicle. By using object tracking algorithm, we can estimate the position, scale and orientation of the vehicle behind. However, the scale of the target can’t be estimated well when the vehicle comes close to the camera. In this study, a new tracking method is proposed to solve the above problem, it is based on the multilevel target region estimation. Besides, we use perspective transform to correct perspective crop and use automatic target selection to let the anti-collision detection method automatically run. The experimental results demonstrate the effectiveness of the proposed method.
Ertoprak, Aysegul. „Lifetime Measurements of Excited States in the Semi-Magic Nucleus 94Ru“. Licentiate thesis, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217356.
Der volle Inhalt der QuelleLivstider för exciterade tillstånd i den semimagiska (N = 50) atomkärnan 94Ru har uppmätts från en analys av Doppler-breddade övergångslinjer. Exciterade tillstånd i 94Ru har populerats i 58Ni(40Ca, 4p)94Ru∗ fusion-evaporationsreaktioner vid partikelacceleratorn Grand Accélérateur National d’Ions Lourds (GANIL), Caen, Frankrike. Livstidsanalys utfördes med hjälp av Dopplerskiftsattenueringsmetoden (DSAM) på linjer i energispektra uppmätta från gammastrålning som emitterades medan de högt exciterade atomkärnorna bromsades ned i ett homogent metalliskt strålmål av 6 mg/cm2 tjocklek. Mätmetoden har verifierats med hjälp av data från en mätning utförd med en alternativ metod. Livstider för sammanlagt åtta exciterade tillstånd i spinn-intervallet I = (13 − 20)ħ har uppmätts, varav fem bestämdes för första gången. Ur dessa har härletts B(M1) och B(E2) övergångssannolikheter vilka diskuteras inom ramen för storskaliga skalmodellsberäkningar.
QC 20171110
Ritschel, Tina [Verfasser]. „TGT - a drug target to study pKa shifts, residual solvation & protein-protein interface formation / vorgelegt von Tina Ritschel“. 2009. http://d-nb.info/999822365/34.
Der volle Inhalt der QuelleAdemi, Irsa. „The Nickel-responsive Binding and Regulation of Two Novel Helicobacter pylori NikR–targeted Genes“. Thesis, 2013. http://hdl.handle.net/1807/35577.
Der volle Inhalt der QuelleDVOŘÁKOVÁ, Eliška. „Geodetická sledování prostorových polohových změn rekultivovaných svahů pohornické krajiny“. Master's thesis, 2009. http://www.nusl.cz/ntk/nusl-51273.
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