نتایج جستجو برای: reducing sequences

تعداد نتایج: 451782  

2009
R. H. Tijssen S. M. Smith P. Jezzard R. Frost M. Jenkinson K. L. Miller

3D readouts generally have the advantage that they 1) allow imaging at a high isotropic resolution and 2) are inherently multi-shot sequences with short readout segments thereby reducing distortion artifacts. These advantages make sequences such as steady-state free-precession (SSFP) and spoiled gradient echo (SPGR) an attractive option for high resolution FMRI in areas such as the brainstem. E...

Journal: :AJNR. American journal of neuroradiology 1988
W Kucharczyk A P Crawley W M Kelly R M Henkelman

Multislice imaging markedly degrades the contrast of T2-weighted MR images as the separation between slices is reduced. Image contrast was measured clinically at 1.5 T and experimentally at 0.15 T as a function of interslice gap width and shown to be in agreement with calculations based on known relaxation times and excitation profiles. Thus, the cause of T2 contrast degradation in multislice s...

2010
Paolo Angelelli Ivan Viola Kim Nylund Odd Helge Gilja Helwig Hauser

Ultrasonography allows informative and expressive real time examinations of patients. Findings are usually reported as printouts, screen shots and video sequences. However, in certain scenarios, the amount of imaged ultrasound data is considerable or it is challenging to detect the anatomical features of interest. Post-examination access to the information present in the data is, therefore, cum...

2001
Michael Levit Allen L. Gorin Jeremy H. Wright

We are interested in spoken language understanding within the domain of automated telecommunication services. Our current methodology involves training statistical language models from large annotated corpora for recognition and understanding. Since the transcribing of large speech corpora is a resource consuming task, we are motivated to exploit speech without transcriptions. In particular, we...

2010
Ravi Kuber Wai Yu

This paper describes a novel approach to authenticate entry to a system using tactile feedback. The user is required to remember a sequence of pre-selected pin patterns. A study has been undertaken to determine the feasibility of the tactile authentication mechanism, through a comparison with a graphical scheme. Findings from a within-subjects study have revealed that both tactile and graphical...

2009
Volker Jungnickel Konstantinos Manolakis Lars Thiele Thomas Wirth Thomas Haustein

Providing cell-specific reference signals is a basic requirement for advanced transmission techniques reducing the inter-cell interference in the mobile radio network. In this paper, we introduce so-called handover sequences. They consist of a comb cyclically shifted in the frequency domain to identify the cells. Orthogonal sequences in time domain are used to identify the antennas within a cel...

2000
S. Parthasarathy M. J. Zaki

The discovery of frequent sequences in temporal databases is an important data mining problem. Most current work assumes that the database is static, and a database update requires rediscovering all the patterns by scanning the entire old and new database. In this paper, we propose novel techniques for maintaining sequences in the presence of a) database updates, and b) user interaction (e.g. m...

Journal: :IEICE Electronics Express 2023

Accurate prediction of the remaining useful life (RUL) metal oxide semiconductor field effect transistors (MOSFETs) is key to safe and reliable operation power electronics. In this paper, we combine long short-term memory (LSTM) networks with successive variational mode decomposition (SVMD) use error compensation methods build a lifetime model, which improves performance model by reducing inter...

Journal: :Electronics 2023

Stochastic computing requires random number generators to generate stochastic sequences that represent probability values. In the case of an 8-bit operation, a 256-bit length sequence is required, which results in latency issues. this paper, architecture proposed address issue by employing parallel linear feedback shift registers (LFSRs). The reduces generation process without losing accuracy. ...

Journal: :hepatitis monthly 0
faraz salehi moghadam gastroenterology and liver diseases research center, shahid beheshti university of medical sciences, tehran, ir iran; department of microbiology, faculty of biological sciences, shahid beheshti university, tehran, ir iran seyed reza mohebbi gastroenterology and liver diseases research center, shahid beheshti university of medical sciences, tehran, ir iran; gastroenterology and liver diseases research center, shahid beheshti university of medical sciences, tehran, ir iran. tel.: +98-2122432514, fax: +98-2122432515, email: [email protected] seyed masoud hosseini department of microbiology, faculty of biological sciences, shahid beheshti university, tehran, ir iran behzad damavand gastroenterology and liver diseases research center, shahid beheshti university of medical sciences, tehran, ir iran mohammad reza zali gastroenterology and liver diseases research center, shahid beheshti university of medical sciences, tehran, ir iran

results phylogenetic analysis of the partial ns5b region demonstrated the relatedness of isolate fsm165 to the new subtype reported from iran in 2006. moreover, some core/e1 and ns5b sequences that had a high level of similarity with fsm165 isolate were found through searching the hcv database. these sequences were previously either misclassified or could not be accurately classified. phylogene...

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