New method of reading strongly correlated sequences: treatment and analysis of the CCD-matrix noise

The Axis-patella Index: A New Method for Measuring Patellar Height

10.21203/rs.3.rs-101436/v1 ◽

2020 ◽

Author(s):

Hua Han ◽

Xiaohui Zhang

Keyword(s):

Correlation Coefficient ◽

Reference Range ◽

Articular Surface ◽

Intraclass Correlation ◽

Patellar Height ◽

New Method ◽

Strongly Correlated ◽

Accurate Identification ◽

Adjacent Structures ◽

The Mean

Abstract Background: The widely used methods for measuring patellar height are based on the anatomic landmarks of the patella and the proximal tibia. When the knee undergoes alterations in the articular surface or adjacent structures due to various diseases or operations, the accurate identification of tibial landmarks is challenging. The results of these conventional methods may be biased or even unavailable. The purpose of this study was to introduce and validate a new method, axis-patella index (API), for assessing patellar height. Methods: Patellar heights were respectively measured using the Insall–Salvati, modified Insall–Salvati, Blackburne–Peel, Caton–Deschamps, plateau-patellar angle, and axis-patella methods on the lateral radiographs of 649 knees without anatomic abnormalities. The inter- and intra-observer reliability of all methods were evaluated by calculating intraclass correlation coefficient and Bland-Altman plots. The associations between the API and the established methods were assessed using Pearson’s correlation coefficient. Results: The API was strongly correlated with the five aforementioned methods. Reliability analyses indicated high inter-observer reproducibility and intra-observer repeatability. The mean of API was approximately 1.5, hence the reference range was defined 1.2 - 1.9 according to the 95% confidence interval. Conclusions: The API, a new index of referencing the tibial shaft axis and the fibular head, providing a valid and accurate alternative for the assessment of patellar height. The reference range was 1.2 - 1.9 in radiographically normal knee.

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A new method to estimate the ages of globular clusters: the case of NGC 3201

Proceedings of the International Astronomical Union ◽

10.1017/s1743921309031846 ◽

2008 ◽

Vol 4 (S258) ◽

pp. 189-196

Author(s):

A. Calamida ◽

G. Bono ◽

P. B. Stetson ◽

M. Dall'Ora ◽

M. Monelli ◽

...

Keyword(s):

Globular Cluster ◽

Globular Clusters ◽

Near Infrared ◽

Color Difference ◽

New Method ◽

Color Temperature ◽

Strongly Correlated ◽

Knee Location ◽

Different Color ◽

Cluster Age

AbstractWe devised a new method to estimate globular cluster absolute ages by adopting the knee of the bending of the lower main-sequence (MS) in the Near-Infrared (NIR)J,J-Kscolor-magnitude diagram. The color difference between this feature and the Turn-Off point is strongly correlated to the cluster age. This method is marginally affected by distance and reddening uncertainties, and by the possible occurrence of differential reddening. Furthermore, the knee location does not depend on the cluster age and it is a robust theoretical prediction. We adopted accurateJ,Ks-band photometry collected with both MAD/VLT and SOFI/NTT for the Galactic globular cluster NGC 3201 to identify the location of the knee atJ~19.90 ±0.03 andJ-Ks~0.76±0.02 mag. The comparison with different sets of cluster isochrones, transformed adopting different Color–Temperature–Relations (CTRs), shows that the models are slightly redder than the observations forJ> 19 mag. This difference could be due to the presence of a calibration drift or to a problem of the CTRs in this magnitude range.

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How to characterise shared space use networks

10.1101/839530 ◽

2019 ◽

Cited By ~ 1

Author(s):

Klara M. Wanelik ◽

Damien R. Farine

Keyword(s):

Space Use ◽

New Method ◽

Observation Data ◽

Strongly Correlated ◽

The Real ◽

Individual Level ◽

Real Network ◽

Shared Space ◽

Sampling Regime ◽

The Individual

ABSTRACTStudying the social behaviour of small or cryptic species often relies on constructing space-sharing networks from sparse point-based observations of individuals. Such an approach assumes that individuals that have greater shared space use will also interact more. However, there is very little guidance on how much data are required to construct meaningful space-sharing networks, or on how to interpret the relationships generated from such networks. In this study, we quantify the robustness of space-sharing networks to different sampling regimes, providing much needed guidance for informing the choice of sampling regime when designing studies to accurately quantify space sharing. We then describe the characteristics of space use in a wild population of field voles (Microtus agrestis), and use this empirical dataset to develop a new method for generating shared space use networks which are generally more strongly correlated with the real network, differ less from the real network and are more powerful to detect effects present in the real network. Our method pools data among individuals to estimate a general home range profile for a given set of individuals.Combining these profiles with the individual-level observation data then allows us to better estimate their overlap in space and requires less data. Our new method provides the potential to generate meaningful space-sharing networks, and in doing so, to address a range of key questions in ecology and evolution, even when point-based observations of individuals are sparse.

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Fibre Length in Relation to the Distance from vessels and contact with rays in Acacia Mangium

IAWA Journal ◽

10.1163/22941932-90000062 ◽

2011 ◽

Vol 32 (3) ◽

pp. 341-350 ◽

Cited By ~ 7

Author(s):

Ridwan Yahya ◽

Katsuhiko Koze ◽

Junji Sugiyama

Keyword(s):

Cross Sections ◽

Fibre Length ◽

Acacia Mangium ◽

New Method ◽

Strongly Correlated ◽

Length Estimation ◽

3D Data ◽

Length Increase ◽

Tangential Directions

Fibre length, as a function of radial or tangential distance from a vessel was estimated from serial cross sections. This new method is easier and faster than earlier methods which rely on photographic prints of transverse images for the analysis. When necessary virtual tangential and radial sections were produced from 3D data to enable fibre length estimation. Fibre length up to the 5th and 2nd fibres away from a vessel in radial and tangential directions, respectively, were significantly shorter than fibres at greater distance from the vessels. Fibre length strongly correlated with radial vessel distance (r = 0.83) up to the 5th fibre and then leveled off. Vessel-adjacent fibres on the radial or tangential side of a vessel did not significantly differ in length. However, the rate of length increase differed significantly in the radial and tangential directions. Percentage of contact with rays varied independently of fibre length.

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Assessment of spontaneous baroreflex sensitivity in rats a new method using the concept of statistical dependence

AJP Regulatory Integrative and Comparative Physiology ◽

10.1152/ajpregu.1995.268.2.r382 ◽

1995 ◽

Vol 268 (2) ◽

pp. R382-R388 ◽

Cited By ~ 5

Author(s):

C. Cerutti ◽

M. Ducher ◽

P. Lantelme ◽

M. P. Gustin ◽

C. Paultre

Keyword(s):

Heart Rate ◽

Baroreflex Sensitivity ◽

New Method ◽

Statistical Dependence ◽

Strongly Correlated ◽

Vasoactive Drugs ◽

Hypertensive Rats ◽

Induced Hypertension ◽

Spontaneous Baroreflex

A new method was developed to evaluate the cardiac baroreflex sensitivity (BRS) from spontaneous mean arterial pressure (MAP) and heart rate (HR) changes in conscious rats. It relies on the determination of the statistical dependence between MAP and HR values. In 13 control rats, 12 rats with a pharmacologically induced hypertension, and 7 rats with a chronic sinoaortic denervation (SAD), dependent (MAP, HR) couples related to the baroreflex activity were selected to determine the spontaneous BRS (Sp-BRS). In control and hypertensive rats, pharmacological BRS (Ph-BRS) was estimated using graded bolus intravenous doses of vasoactive drugs. Ph-BRS was significantly lower in hypertensive than in control rats. Sp-BRS was determined in 10 control and 10 hypertensive rats and was strongly correlated with Ph-BRS (r = 0.83, n = 20, P < 0.0001). Sp-BRS could be evaluated in six SAD rats and was profoundly decreased (-86%, P < 0.001) compared with control rats. In conclusion, this work validates the estimation of the cardiac BRS from spontaneous MAP and HR variations with use of (MAP, HR) couples of values that are statistically dependent.

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July 11, 1991 Eclipse Corona Photometry by the Results of Electropolarimetric and CCD-Matrix Observations

International Astronomical Union Colloquium ◽

10.1017/s0252921100026051 ◽

1994 ◽

Vol 144 ◽

pp. 567-569

Author(s):

V. Kulidzanishvili ◽

D. Georgobiani

Keyword(s):

Solar Corona ◽

Observational Data ◽

Solar Limb ◽

Ccd Matrix

AbstractThe observational data of July 11, 1991 eclipse solar corona obtained by both electropolarimeter (EP) and CCD-matrix were processed. Using these data, the solar corona photometry was carried out. The results of EP data are compared with the ones of CCD data. It must be noted here that the CCD data give us only characteristics of the inner corona, while the EP data show the features of both the inner and middle corona up to 4R⊙. Standard flattening indexϵis evaluated from both data. The dependence of the flattening index on the distance from the solar limb is investigated. The isophotes in Na and Ca lines are plotted. Based on these data some ideas and conclusions on the type of the solar corona are presented.

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Selective Sampling and Orientation of Non-Homogeneous Tissues

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100100238 ◽

1968 ◽

Vol 26 ◽

pp. 98-99

Author(s):

C. C. Clawson ◽

L. W. Anderson ◽

R. A. Good

Keyword(s):

Electron Microscopy ◽

Electron Microscope ◽

Light Microscopy ◽

Random Sampling ◽

New Method ◽

Microscope Examination ◽

Small Areas ◽

Selective Sampling ◽

Large Numbers ◽

Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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The Concurrent Validity of the Minnesota Child Development Inventory as a Measure of Young Children's Language Development

Journal of Speech and Hearing Disorders ◽

10.1044/jshd.5401.101 ◽

1989 ◽

Vol 54 (1) ◽

pp. 101-105 ◽

Cited By ~ 19

Author(s):

J. Bruce Tomblin ◽

Cynthia M. Shonrock ◽

James C. Hardy

Keyword(s):

Child Development ◽

Language Development ◽

Expressive Language ◽

Strong Predictor ◽

Receptive Language ◽

Strongly Correlated ◽

Language Measure ◽

The Mean ◽

Child Development Inventory ◽

Mean Length Of Utterance

The extent to which the Minnesota Child Development Inventory (MCDI), could be used to estimate levels of language development in 2-year-old children was examined. Fifty-seven children between 23 and 28 months were given the Sequenced Inventory of Communication Development (SICD), and at the same time a parent completed the MCDI. In addition the mean length of utterance (MLU) was obtained for each child from a spontaneous speech sample. The MCDI Expressive Language scale was found to be a strong predictor of both the SICD Expressive scale and MLU. The MCDI Comprehension-Conceptual scale, presumably a receptive language measure, was moderately correlated with the SICD Receptive scale; however, it was also strongly correlated with the expressive measures. These results demonstrated that the Expressive Language scale of the MCDI was a valid predictor of expressive language for 2-year-old children. The MCDI Comprehension-Conceptual scale appeared to assess both receptive and expressive language, thus complicating its interpretation.

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