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How shall we determine detection sensitivity in radio pulsar search? [article]

Meng Yu
2018 arXiv   pre-print
In the same surveys, the Fourier domain method was used to search for pulsars.  ...  As detection sensitivity is partially a function of the searching method, the straightfoward use of the radiometer equation for detection sensitivity determination is not consistent with the Fourier searching  ...  Crawford for the helpful discussion with him and his provision of the original routine for the sensitivity prediction of the Parkes multi-beam pulsar survey.  ... 
arXiv:1811.07113v1 fatcat:igdhortaxnei3oorpf36yqrxhm

Exploring new topography-based subgrid spatial structures for improving land surface modeling

Teklu K. Tesfa, Lai-Yung Ruby Leung
2017 Geoscientific Model Development  
In the global method, a fixed elevation classification scheme is used to discretize subbasins.  ...  Results showed that the local method reduces the standard deviation (SD) of subgrid surface elevation in the study domain by 17 to 19<span class="thinspace"></span>% compared to the global method, highlighting  ...  In addition, sensitivity of the two methods (global and local) to the values of area threshold when used to derive non-geo-located SUs is evaluated using statistical metrics calculated over the study domain  ... 
doi:10.5194/gmd-10-873-2017 fatcat:umxeafy7c5hqfbdxiyzghsldo4

Evaluation of a Method for Predicting Transcription Factors Using Motif-Search Programs

Goro Terai, Takeshi Mizuno, Toshihisa Takagi
1999 Genome Informatics Series  
And then we evaluated their results separately in terms of sensitivity and specificity. Determining a threshold In using HMMER and PSI-BLAST, we can set a threshold.  ...  Hereafter we will evaluate a method for predicting transcription factors based on the existence of a transactivation domain.  ... 
doi:10.11234/gi1990.10.249 fatcat:aqalun36arao3eql25vl3kjhtm

Arrhythmia Classification Based on Multi-Domain Feature Extraction for an ECG Recognition System

Hongqiang Li, Danyang Yuan, Youxi Wang, Dianyin Cui, Lu Cao
2016 Sensors  
An improved wavelet threshold method for ECG signal pre-processing is applied to remove noise interference.  ...  A novel multi-domain feature extraction method is proposed; this method employs kernel-independent component analysis in nonlinear feature extraction and uses discrete wavelet transform to extract frequency  ...  Therefore, a feature vector with a 1800 × 4 matrix is derived as the frequency domain features.  ... 
doi:10.3390/s16101744 pmid:27775596 pmcid:PMC5087529 fatcat:j3enr3aaxbdbfp42q3qyoag4qi

Exploring New Topography-based Subgrid Spatial Structures for Land Surface Modeling

Teklu K. Tesfa, Lai-Yung Leung
2016 Geoscientific Model Development Discussions  
In the Global method, a fixed elevation classification scheme is used to discretize subbasins.  ...  Two methods (Local and Global) of watershed discretization are applied to derive two types of subgrid structures (geo-located and non-geo-located) over the topographically diverse Columbia River basin  ...  In addition, sensitivity of the two methods (Global and Local) when used to derive non-geo-located SUs is evaluated using statistical metrics calculated over the study domain such as total number of SUs  ... 
doi:10.5194/gmd-2016-152 fatcat:ysxkqcjxxnew3elelhjukyqqfe

AVS encoding optimization with perceptual just noticeable distortion model

Qi Cai, Li Song
2013 2013 9th International Conference on Information, Communications & Signal Processing  
To better modeling JND profile in AVS integer DCT domain, we further derive the JND mapping from the classical DCT domain to AVS Integer DCT domain.  ...  In this paper we propose to enhance AVS encoder by using the latest just noticeable distortion (JND) model to adjust DCT coefficients of prediction residues in a content adaptive way.  ...  This method is to derive JND mapping between this approximate DCT domain and classical DCT domain.  ... 
doi:10.1109/icics.2013.6782937 dblp:conf/IEEEicics/CaiS13 fatcat:nj3einfsbrfjnbrjko5axwmtga

Topology Optimization Considering Porosity Defects in Metal Additive Manufacturing

Shuangyuan Cao, Hanbin Wang, Xiao Lu, Jianbin Tong, Zhongqi Sheng
2021 Applied Sciences  
The concept of topological sensitivity is used to formulate a global porosity constraint function in the proposed method, and a level set topology optimization model considering porosity defects is obtained  ...  During this process, the hole nucleation method combining bi-directional evolutionary structural optimization (BESO) and the topological sensitivity is used.  ...  topological sensitivity threshold .  ... 
doi:10.3390/app11125578 fatcat:66hnavxjibevtm7v3kalr2aesa

EARLY SEIZURE DETECTION TECHNIQUES: A Review

Manpreet Kaur, Neelam Rup Prakash, Parveen Kalra
2018 Indian Journal of Science and Technology  
Methods/Statistical Analysis: Different seizure detection techniques were studied to find the efficient technique for early seizure detection.  ...  Different time domain, frequency domain and time-frequency domain features were extracted from the raw EEG signal.  ...  If the difference is greater than the threshold, the epoch is declared as epileptic otherwise it is declared as normal. This modified system achieved a sensitivity of 97%.  ... 
doi:10.17485/ijst/2018/v11i10/99176 fatcat:myt4vcqha5htxjbs35x2jgmgyu

Speech Enhancement Algorithm to Reduce the Effect of Background Noise in Mobile Phones

Premananda BS, Uma BV
2013 International Journal of Wireless & Mobile Networks  
There is a need to improve the quality of received speech signal in noisy conditions by developing the speech enhancement algorithms.  ...  Time domain approach is less complex and frequency domain using psychoacoustic is more efficient in overcoming the degradation of speech signals in presence of near-end or background noise.  ...  If one has a high absolute threshold, then he requires more stimulation and thus is less sensitive [14] .  ... 
doi:10.5121/ijwmn.2013.5114 fatcat:sm4rliuwxffmlhpi3cwgtc656e

Respiratory Monitoring Based on Tracheal Sounds: Continuous Time-Frequency Processing of the Phonospirogram Combined with Phonocardiogram-Derived Respiration

Xinyue Lu, Christine Azevedo Coste, Marie-Cécile Nierat, Serge Renaux, Thomas Similowski, David Guiraud
2020 Sensors  
The recordings were post-processed by combining temporal and frequency detection domains, and a new method was proposed—Phonocardiogram-Derived Respiration (PDR).  ...  PDR method showed a good correlation of 0.77 with ECG-Derived Respiration (EDR). The comparison of R-R intervals and S-S intervals also indicated a good correlation of 0.89.  ...  The new proposed method, phonocardiogram-derived respiration (PDR), showed a good correlation with EDR, which demonstrates the feasibility of using PDR to monitor respiration.  ... 
doi:10.3390/s21010099 pmid:33375762 pmcid:PMC7795986 fatcat:aosnnzto4betddiq7jnt7fmksi

A novel approach to fold recognition using sequence-derived properties from sets of structurally similar local fragments of proteins

T. R. Hvidsten, A. Kryshtafovych, J. Komorowski, K. Fidelis
2004 Bioinformatics  
To this end, we present a novel fragment-based method using sets of structurally similar local fragments of proteins.  ...  The approach differs from other fragment-based methods that use only single backbone fragments.  ...  Obviously, sensitivity and specificity now become a function of this threshold.  ... 
doi:10.1093/bioinformatics/bth062 fatcat:je727iemsrcmlpaeudpqhnsnhu

The COST733 circulation type classification software: an example for surface ozone concentrations in Central Europe

Matthias Demuzere, P. Kassomenos, A. Philipp
2010 Theoretical and Applied Climatology  
The cost733class software contains a variety of (European) classification methods and is flexible towards choice of domain of interest, input variables, time step, number of circulation types, sequencing  ...  In a second step, the probabilistic Brier skill score is used to quantify the M. Demuzere (B) Earth and Environmental Sciences,  ...  The threshold methods GWT, JCT and LIT use fixed thresholds throughout the year to derive the circulation patterns. In other words, the circulation pattern from e.g.  ... 
doi:10.1007/s00704-010-0378-4 fatcat:m4zt2ds24nejnfafzqdypgxp7a

2019 European League Against Rheumatism/American College of Rheumatology Classification Criteria for Systemic Lupus Erythematosus

Martin Aringer, Karen Costenbader, David Daikh, Ralph Brinks, Marta Mosca, Rosalind Ramsey‐Goldman, Josef S. Smolen, David Wofsy, Dimitrios T. Boumpas, Diane L. Kamen, David Jayne, Ricard Cervera (+52 others)
2019 Arthritis & Rheumatology  
ROC analysis suggested a data-driven threshold of 70 (of a maximum of 305), with a sensitivity of 95.4% and a specificity of 95.2%, which was superior to the consensus-derived provisional threshold of  ...  analysis. 4) Refinement of weights and threshold scores in a new derivation cohort of 1001 subjects and validation compared to previous criteria in a new validation cohort of 1270 subjects.  ... 
doi:10.1002/art.40930 pmid:31385462 pmcid:PMC6827566 fatcat:gaetdeotzrd3venrrdndsnm57a

An efficient Jacobian reduction method for diffuse optical image reconstruction

Matthew E. Eames, Brian W. Pogue, Phaneendra K. Yalavarthy, Hamid Dehghani
2007 Optics Express  
In this work we present an efficient Jacobian reduction method which takes into account the total sensitivity of the imaging domain to the measured boundary data.  ...  Most model based image reconstruction algorithms rely on Newton type inversion methods, whereby the inverse of a large Jacobian is approximated.  ...  index mismatch between the tissue domain and air derived from Fresnel's law.  ... 
doi:10.1364/oe.15.015908 pmid:19550878 fatcat:v4u3allg2bc6jkefwf2nu5dnuu

Evaluating the protein coding potential of exonized transposable element sequences

Jittima Piriyapongsa, Mark T Rutledge, Sanil Patel, Mark Borodovsky, I King Jordan
2007 Biology Direct  
Profile based methods are more sensitive and more selective than the other methods evaluated.  ...  Results: We compared the ability of three classes of sequence similarity search methods to detect TE-derived sequences among data sets of experimentally characterized proteins: 1-a profile-based hidden  ...  Only one of the 12 proteins was detected using all methods, and again, RepeatMasker was shown to be the least sensitive method ( Case studies of known TE-derived genes There are a number of well verified  ... 
doi:10.1186/1745-6150-2-31 pmid:18036258 pmcid:PMC2203978 fatcat:3bcsnucc3vez5cp4oju4c7ywcm
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