Log in

Relevant bibliographies by topics / And Correlations: BasicConcepts and Methods / Journal articles

Journal articles on the topic 'And Correlations: BasicConcepts and Methods'

To see the other types of publications on this topic, follow the link: And Correlations: BasicConcepts and Methods.

Author: Grafiati

Published: 27 July 2024

Last updated: 28 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'And Correlations: BasicConcepts and Methods.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Qanita, Afiana, Muhammad Faris Fadhlillah, and Andika Supriyana. "Analysis of Structural Equation Modeling as a Measuring Tool for Educational Management Research." Aptisi Transactions on Management (ATM) 2, no. 2 (January 24, 2019): 129–39. http://dx.doi.org/10.33050/atm.v2i2.812.

Full text

Abstract:

In management education and psychology there are certain concepts that cannot bewell defined and then various discussions arise about the true meaning of the concept.Concepts such as management intelligence, personality, attitudes, interests, ambitions, socialprejudice and social status are hypothetical constructs that are not available in operationalmethods that can directly measure them. Concepts such as intelligence, personality, attitudes,interests, ambitions, social prejudice, social status are hypothetical constructs that are notavailable operational methods that can directly measure them. This study aims to determine thebackground of the use of Structural Equation Modeling (SEM), understanding SEM, basicconcepts of SEM: constructs, manifest variables, validity, reliability, factor analysis, polycoriccorrelation, causal relationships, LISREL: Linear Structural Relationship, SEM procedures :definition of variance and covariance, model specifications, model identification, modelestimation, model formation, model compatibility test, model specification, LISREL programoutput. Symbols in SEM and SEM mathematical equations. The method used during this studytook place, namely using a literature study method which functions so that in research,researchers continue to add insight.

APA, Harvard, Vancouver, ISO, and other styles

2

Quinn, Thomas P., and Ionas Erb. "Examining microbe–metabolite correlations by linear methods." Nature Methods 18, no. 1 (January 2021): 37–39. http://dx.doi.org/10.1038/s41592-020-01006-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Batra, Vijay K. "Toxicokinetics/Toxicodynamic Correlations: Goals, Methods, and Limitations." Toxicologic Pathology 23, no. 2 (March 1995): 158–64. http://dx.doi.org/10.1177/019262339502300209.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Amerise, Ilaria L., and Agostino Tarsitano. "Correction methods for ties in rank correlations." Journal of Applied Statistics 42, no. 12 (May 12, 2015): 2584–96. http://dx.doi.org/10.1080/02664763.2015.1043870.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Zheng, Shun Xing, and Hua Shan Chen. "Correlations of rheological methods to coatings' performance." Progress in Organic Coatings 177 (April 2023): 107403. http://dx.doi.org/10.1016/j.porgcoat.2022.107403.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

de Forcrand, Ph, and C. Roiesnel. "Refined methods for measuring large-distance correlations." Physics Letters B 151, no. 1 (January 1985): 77–80. http://dx.doi.org/10.1016/0370-2693(85)90826-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

O'Neal, Marcia R., and Brad S. Chissom. "Comparison of Three Methods for Assessing Attitudes." Perceptual and Motor Skills 78, no. 3_suppl (June 1994): 1251–58. http://dx.doi.org/10.2466/pms.1994.78.3c.1251.

Full text

Abstract:

Conducting survey research involves making choices concerning the methods of gathering attitude data. Several methods are available, each with its advantages and disadvantages. Three methods were compared in this study. They included ratings, rankings, and paired comparisons. The responses of 392 undergraduate students were included in the analyses. Each participant completed a survey consisting of three attitude objects of five items each, one set formatted using a rating scale, another using rankings, and a third using paired comparisons. Three survey forms were developed so that each attitude object could be presented in each format. The three forms were presented randomly to approximately equal numbers of participants. Analyses consisted of obtaining means or scale values for each item. Correlations among methods were computed for each of the three attitude objects. Correlations for one well-researched attitude object were all above .80. Other correlations ranged from .41 to .89. Consistently the highest correlations were between rankings and paired comparisons, a finding that is not surprising in view of the fact that tasks required of these two scales are very similar.

APA, Harvard, Vancouver, ISO, and other styles

8

Novak, Miroslav M. "Correlations in Computer Programs." Fractals 06, no. 02 (June 1998): 131–38. http://dx.doi.org/10.1142/s0218348x9800016x.

Full text

Abstract:

Numerical and statistical methods are used to analyze and classify computer programs. Both computer source code and object files are examined. The results of the application of the Pearson and Spearman correlation methods to the source code are coupled with the random walk model applied to the binary code. One of the practical consequences of the analysis is the ability to quantify the degree of similarity between different computer programs and, hence, identify cases of plagiarism.

APA, Harvard, Vancouver, ISO, and other styles

9

Klapper, A., and C. Carlet. "Spectral Methods for Cross Correlations of Geometric Sequences." IEEE Transactions on Information Theory 50, no. 1 (January 2004): 229–32. http://dx.doi.org/10.1109/tit.2003.821982.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

PRUNEAU, CLAUDE. "METHODS FOR JET STUDIES WITH THREE-PARTICLE CORRELATIONS." International Journal of Modern Physics E 16, no. 07n08 (August 2007): 1964–70. http://dx.doi.org/10.1142/s0218301307007301.

Full text

Abstract:

We present a method based on three-particle azimuthal correlation cumulants for the study of the interaction of jets with the medium produced in heavy ion collisions at RHIC and LHC where jets cannot be reconstructed on an event-by-event basis with conventional jet finding algorithms. The method is specifically designed to distinguish a range of jet interaction mechanisms such as Mach cone emission, gluon Cerenkov emission, jet scattering, and jet broadening. We discuss how anisotropic flow background conti-butions of second order (e.g. [Formula: see text]) are suppressed in three-particle azimuthal correlation cumulants, and discussed specific model representations of di-jets, away-side scattering, and Mach cone emission.

APA, Harvard, Vancouver, ISO, and other styles

11

Gollob, Harry F. "Methods for estimating individual- and group-level correlations." Journal of Personality and Social Psychology 60, no. 3 (March 1991): 376–81. http://dx.doi.org/10.1037/0022-3514.60.3.376.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Kallu, Raj, and Pedram Roghanchi. "Correlations between direct and indirect strength test methods." International Journal of Mining Science and Technology 25, no. 3 (May 2015): 355–60. http://dx.doi.org/10.1016/j.ijmst.2015.03.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Dekeyser, R., and G. Kamieniarz. "Effective field methods with correlations in magnetic systems." Journal of Magnetism and Magnetic Materials 104-107 (February 1992): 273–74. http://dx.doi.org/10.1016/0304-8853(92)90795-p.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

MITTAL, BHAVISHYA, and V. M. PURL. "CORRELATIONS BETWEEN POWDER DEPOSITION METHODS AND GREEN COMPACT QUALITY: PART II COMPACT QUALITY AND CORRELATIONS." Particulate Science and Technology 17, no. 4 (October 1999): 301–15. http://dx.doi.org/10.1080/02726359908906820.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Yun, Jung Hoon, and Ji Hwan Jeong. "A Review of Prediction Methods for Two-Phase Pressure Loss in Mini/Micro-Channels." International Journal of Air-Conditioning and Refrigeration 24, no. 01 (March 2016): 1630002. http://dx.doi.org/10.1142/s2010132516300020.

Full text

Abstract:

Previous methods and correlations for predicting two-phase frictional pressure loss in mini/micro-channels are reviewed and compared. The empirical correlations are classified into four groups of modeling approaches: Homogeneous equilibrium models (HEMs), separated flow models (SFMs), direct empirical correlations, and flow pattern specific correlations. In order to examine the characteristics of the predictive methods for two-phase pressure loss in mini-channels and to assess the accuracy of the previous models and correlations, extensive experimental data and correlations that are available in the open literature are collected. The 1175 and 1304 experimental data for the two-phase pressure drop for condensing and boiling flows, respectively, are gathered from 15 papers and reports. The results present that the size of the channel significantly influences the pressure drop. The comparison demonstrates that Cicchitti et al.’s two-phase viscosity model is recommended for predicting two-phase pressure loss when the HEM is used. In general, the SFM with the two-phase multipliers of Muller–Steinhagen and Heck and Kim and Mudawar outperforms others for channel diameters of less than 3[Formula: see text]mm.

APA, Harvard, Vancouver, ISO, and other styles

16

Brody, Carlos D. "Correlations Without Synchrony." Neural Computation 11, no. 7 (October 1, 1999): 1537–51. http://dx.doi.org/10.1162/089976699300016133.

Full text

Abstract:

Peaks in spike train correlograms are usually taken as indicative of spike timing synchronization between neurons. Strictly speaking, however, a peak merely indicates that the two spike trains were not independent. Two biologically plausible ways of departing from independence that are capable of generating peaks very similar to spike timing peaks are described here: covariations over trials in response latency and covariations over trials in neuronal excitability. Since peaks due to these interactions can be similar to spike timing peaks, interpreting a correlogram may be a problem with ambiguous solutions. What peak shapes do latency or excitability interactions generate? When are they similar to spike timing peaks? When can they be ruled out from having caused an observed correlogram peak? These are the questions addressed here. The previous article in this issue proposes quantitative methods to tell cases apart when latency or excitability covariations cannot be ruled out.

APA, Harvard, Vancouver, ISO, and other styles

17

Morton, James T., Daniel McDonald, Alexander A. Aksenov, Louis Felix Nothias, James R. Foulds, Robert A. Quinn, Michelle H. Badri, et al. "Reply to: Examining microbe–metabolite correlations by linear methods." Nature Methods 18, no. 1 (January 2021): 40–41. http://dx.doi.org/10.1038/s41592-020-01007-0.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Witt, T. J. "Practical methods for treating serial correlations in experimental observations." European Physical Journal Special Topics 172, no. 1 (June 2009): 137–52. http://dx.doi.org/10.1140/epjst/e2009-01047-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Wilcox, Rand R., Guillaume A. Rousselet, and Cyril R. Pernet. "Improved methods for making inferences about multiple skipped correlations." Journal of Statistical Computation and Simulation 88, no. 16 (July 23, 2018): 3116–31. http://dx.doi.org/10.1080/00949655.2018.1501051.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

MIURA, Daisuke, Taira MIYASAKA, Harumi AOKI, Yusuke AOYAGI, and Yoshiki ISHIDA. "Correlations among bending test methods for dental hard resins." Dental Materials Journal 36, no. 4 (2017): 491–96. http://dx.doi.org/10.4012/dmj.2016-304.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

O. Ozgur, Bahar, Turgay Ozgur, Yavuz Taskiran, Ayla D. Taskiran, Gokalp Gurel, and Sahin Ozen. "The correlations between commonly used anaerobic threshold determination methods." International Journal of Academic Research 5, no. 6 (December 10, 2013): 33–43. http://dx.doi.org/10.7813/2075-4124.2013/5-6/a.5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Zhang, Qian (Jackie), and Lijuan (Peggy) Wang. "Aggregating and Testing Intra-Individual Correlations: Methods and Comparisons." Multivariate Behavioral Research 49, no. 2 (March 2014): 130–48. http://dx.doi.org/10.1080/00273171.2013.870877.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Park, Younhee, Hyon-Suk Kim, Dong Il Won, Hae Jin Kim, and Yu Seun Kim. "52-P: Correlations of donor-specific antibody detection methods." Human Immunology 70 (November 2009): S37. http://dx.doi.org/10.1016/j.humimm.2009.09.085.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

SICKLES, ANNE. "JET CORRELATIONS WITH IDENTIFIED PARTICLES FROM PHENIX: METHODS AND RESULTS." International Journal of Modern Physics E 16, no. 10 (November 2007): 3160–67. http://dx.doi.org/10.1142/s0218301307009154.

Full text

Abstract:

Azimuthal angle two particle correlations have been shown to be a powerful probe for extracting novel features of the interaction between hard scattered partons and the medium produced in Au + Au collisions at RHIC. At intermediate pT, 2–5 GeV/c, the jets have been shown to be significantly modified in both their particle composition and their angular distribution compared to p + p collisions. Additionally, angular two particle correlations with identified hadrons provide information on the possible role of modified hadronization scenarios such as partonic recombination, which might allow medium modified jet fragmentation by connecting hard scattered partons to low pT thermal partons. PHENIX has excellent particle identification capabilities and has developed robust techniques for extracting jet correlations from the large underlying event. We present recent PHENIX results from Au + Au collisions for a variety of pT and particle type combinations. We also present p + p measurements as a baseline. We show evidence that protons and anti-protons in the pT region of enhanced baryon and anti-baryon single particle production are produced in close angle pairs of opposite charge and that the strong modifications to the away side shape observed for charged hadron correlations are also present when baryons are correlated.

APA, Harvard, Vancouver, ISO, and other styles

25

Mardare, Ileana, and Eugenia Claudia Bratu. "Measuring Stress – Methods and Tools." Acta Medica Transilvanica 25, no. 1 (March 1, 2020): 5–7. http://dx.doi.org/10.2478/amtsb-2020-0002.

Full text

Abstract:

AbstractTo validate PSS-14 Romanian version and identify reliable and simple tools which can be used for measuring stress level in current practice. Materials and methods: PSS-14 Romanian version, a five-level qualitative scale and a decimal scale were applied to 928 Romanian subjects, selected through the “snowball method”, for measuring perceived stress level. Intraclass correlations and Alpha Cronbach coefficient were used for assessing internal consistency of PSS-14 and Spearman coefficient for testing correlations.Results: Cronbach’s Alpha values for PSS-14 items were ≥0.700 (0.746 and 0.878 for standardized coefficient), showing internal consistency. Spearman correlation (0.375, p<0.05) revealed positive, medium and significant correlations between simple scales scores and PSS-14 scores.Conclusions: PSS-14 RO is an adequate tool for measuring the perceived stress level in Romanian patients. When appropriate, a simple Likert qualitative scale or a decimal self-assessment scale can quickly provide to health professionals results with indicative value.

APA, Harvard, Vancouver, ISO, and other styles

26

Vlček, Jozef, Dominika Ďureková, and Katarína Zgútová. "Evaluation of Dynamic Methods for Earthwork Assessment." Civil and Environmental Engineering 11, no. 1 (May 1, 2015): 38–44. http://dx.doi.org/10.1515/cee-2015-0005.

Full text

Abstract:

Abstract Rapid development of road construction imposes requests on fast and quality methods for earthwork quality evaluation. Dynamic methods are now adopted in numerous civil engineering sections. Especially evaluation of the earthwork quality can be sped up using dynamic equipment. This paper presents the results of the parallel measurements of chosen devices for determining the level of compaction of soils. Measurements were used to develop the correlations between values obtained from various apparatuses. Correlations show that examined apparatuses are suitable for examination of compaction level of fine-grained soils with consideration of boundary conditions of used equipment. Presented methods are quick and results can be obtained immediately after measurement, and they are thus suitable in cases when construction works have to be performed in a short period of time.

APA, Harvard, Vancouver, ISO, and other styles

27

Webster, Thomas F. "Correlations of Exposure Variables in Mixtures Epidemiology: Methods and Implications." ISEE Conference Abstracts 2017, no. 1 (February 2018): 912. http://dx.doi.org/10.1289/isee.2017.2017-912.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

ASTLES, P. A., A. J. MOORE, and R. F. PREZIOSI. "A comparison of methods to estimate cross-environment genetic correlations." Journal of Evolutionary Biology 19, no. 1 (January 2006): 114–22. http://dx.doi.org/10.1111/j.1420-9101.2005.00997.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Benmouna, Karim, Christophe Milants, and François Charles Wang. "Correlations between MUNIX and adapted multiple point stimulation MUNE methods." Clinical Neurophysiology 129, no. 2 (February 2018): 341–44. http://dx.doi.org/10.1016/j.clinph.2017.11.012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Bracken, Paul. "Bell’s Inequalities and Methods of Quantifying Measures of Entanglement Correlations." International Journal of Theoretical Physics 53, no. 8 (April 8, 2014): 2819–26. http://dx.doi.org/10.1007/s10773-014-2079-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Das, Shubhabrata, and Pranab Kumar Sen. "Asymptotic Distribution of Restricted Canonical Correlations and Relevant Resampling Methods." Journal of Multivariate Analysis 56, no. 1 (January 1996): 1–19. http://dx.doi.org/10.1006/jmva.1996.0001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

BERRYMAN, M. J., A. ALLISON, and D. ABBOTT. "MUTUAL INFORMATION FOR EXAMINING CORRELATIONS IN DNA." Fluctuation and Noise Letters 04, no. 02 (June 2004): L237—L246. http://dx.doi.org/10.1142/s0219477504001574.

Full text

Abstract:

This paper examines two methods for finding whether long-range correlations exist in DNA: a fractal measure and a mutual information technique. We evaluate the performance and implications of these methods in detail. In particular we explore their use comparing DNA sequences from a variety of sources. Using software for performing in silico mutations, we also consider evolutionary events leading to long range correlations and analyse these correlations using the techniques presented. Comparisons are made between these virtual sequences, randomly generated sequences, and real sequences. We also explore correlations in chromosomes from different species.

APA, Harvard, Vancouver, ISO, and other styles

33

LIN, AIJING, and PENGJIAN SHANG. "MINIMIZING PERIODIC TRENDS BY APPLYING LAPLACE TRANSFORM." Fractals 19, no. 02 (June 2011): 203–11. http://dx.doi.org/10.1142/s0218348x11005245.

Full text

Abstract:

Rescaled range analysis (R/S analysis), detrended fluctuation analysis (DFA) and detrended moving average (DMA) are widely-used methods for detection of long-range correlations in time series. Detrended cross-correlation analysis (DCCA) is a recently developed method to quantify the cross-correlations of two non-stationary time series. Another method for studying auto-correlations and cross-correlations was presented by Sergio Arianos and Anna Carbone in 2009. Recent studies have reported the susceptibility of this methods to periodic trends, which can result in spurious crossovers. In this paper, we propose the modified methods base on Laplace transform to minimizing the effect of periodic trends. The effectiveness of our techniques are demonstrated on stock data corrupted with periodic trends.

APA, Harvard, Vancouver, ISO, and other styles

34

Lester, David. "Availability of Methods for Suicide and Suicide Rates." Perceptual and Motor Skills 76, no. 3_suppl (June 1993): 1358. http://dx.doi.org/10.2466/pms.1993.76.3c.1358.

Full text

Abstract:

Correlations between suicidal and accidental deaths by similar methods over states and over age groups were positive, suggesting that accidental death rates may indirectly measure the availability of methods for suicide.

APA, Harvard, Vancouver, ISO, and other styles

35

Marshall, C. Tara, and Kenneth T. Frank. "Geographic Responses of Groundfish to Variation in Abundance: Methods of Detection and Their Interpretation." Canadian Journal of Fisheries and Aquatic Sciences 51, no. 4 (April 1, 1994): 808–16. http://dx.doi.org/10.1139/f94-079.

Full text

Abstract:

Recent published studies have used data from bottom trawl surveys of groundfish populations to test whether distributional area and abundance are correlated. Two studies that used different indices to represent the distributional area of Georges Bank haddock (Melanogrammus aeglefinus) yielded conflicting results. To determine whether this is an example of different distributional indices measuring different things, both indices were regressed against estimates of abundance of haddock from a different but neighbouring location on the southwestern Scotian Shelf. Positive correlations were observed for immature age-classes using both indices whereas only one of the two indices resulted in positive correlations for mature age-classes. The following factors contributed to the lack of agreement among distributional indices: (1) age-aggregated indices potentially obscure correlations between distributional area and abundance for individual age-classes; (2) distributional indices that depend on the magnitude of catch rates confound variation in the large-scale horizontal distribution of stocks with diurnal variation in the three-dimensional distribution of schools; (3) distributional indices that scale positively with abundance generate spurious correlations. The results suggest that the outcome of any test of whether distributional area and abundance are correlated depends on the index chosen to represent distributional area.

APA, Harvard, Vancouver, ISO, and other styles

36

Räsänen, Aleksi, Anssi M. Lensu, Erkki O. Tomppo, and Markku Tapio Kuitunen. "Comparing conservation value maps and mapping methods in a rural landscape in southern Finland." Landscape Online 44 (November 26, 2015): 1–19. http://dx.doi.org/10.3097/lo.201544.

Full text

Abstract:

We tested to what extent conservation value maps are different if the valuation and mapping method is changed. We compared 66 different conservation value and 4 different ecosystem service maps. Using remote sensing and other georeferenced data, we produced 2 different habitat type maps, which were 50 % similar. We valued each mapped habitat type based on rarity corrected potential number of vascular plant species and naturalness using 6 different valuation alternatives. We mapped habitat type connectivity and complementarity using 2 main approaches. The habitat type valuation alternatives were quite similar, but if the habitat type naturalness was taken into account, differences were larger (correlations between maps 0.38- 1.00). Different connectivity and complementarity calculations yielded different results, variation between different approaches being larger (correlations -0.15-0.44) than inside an approach (correlations 0.31-0.60). Conservation value maps were very different from ecosystem service maps (carbon storage, timber production potential, landscape value for recreation) (correlations -0.29-0.47). We show that valuation and mapping approach has a large effect on the conservation value map and the correlation between ecosystem service and conservation value maps depends on the used mapping approach. As different mapping approaches provide different maps, maps should be used with care.

APA, Harvard, Vancouver, ISO, and other styles

37

LYNCH, MICHAEL. "Estimating genetic correlations in natural populations." Genetical Research 74, no. 3 (December 1999): 255–64. http://dx.doi.org/10.1017/s0016672399004243.

Full text

Abstract:

Information on the genetic correlation between traits provides fundamental insight into the constraints on the evolutionary process. Estimates of such correlations are conventionally obtained by raising individuals of known relatedness in artificial environments. However, many species are not readily amenable to controlled breeding programmes, and considerable uncertainty exists over the extent to which estimates derived under benign laboratory conditions reflect the properties of populations in natural settings. Here, non-invasive methods that allow the estimation of genetic correlations from phenotypic measurements derived from individuals of unknown relatedness are introduced. Like the conventional approach, these methods demand large sample sizes in order to yield reasonably precise estimates, and special precautions need to be taken to eliminate bias from shared environmental effects. Provided the sample consists of at least 20% or so relatives, informative estimates of the genetic correlation are obtainable with sample sizes of several hundred individuals, particularly if supplemental information on relatedness is available from polymorphic molecular markers.

APA, Harvard, Vancouver, ISO, and other styles

38

Lowell, Jessica, Dustin D. Boler, and Anna C. Dilger. "100 Young Scholar Presentation: Effects of sex, sire line, and packaging method on the relationships among early postmortem loin quality and aged loin and pork chop quality characteristics." Journal of Animal Science 97, Supplement_2 (July 2019): 56–57. http://dx.doi.org/10.1093/jas/skz122.103.

Full text

Abstract:

Abstract A challenge in the pork industry is that packers assess pork loin quality at ~1d postmortem, while consumers assess quality after a period of postmortem aging. Rapid line speed necessitates rapid noninvasive assessment of quality by packers as indicators of aged (~14d) quality. However, it is unclear if this assessment is representative of quality observed by consumers at purchase. It is also unclear if correlations differ between barrows and gilts, sire lines, or packaging methods. Therefore, several studies were conducted to address these questions. Harsh et al. (doi.org/10.1093/jas/sky183) used meta-analyses techniques to establish correlations between early and aged pork loin quality. Data sets encompassed ~3,957 loins. Early instrumental and visual color were moderately correlated ( ≥ 0.38) with aged instrumental and visual color. No early quality parameters were correlated ( ≤ 0.36) with instrumental or sensory tenderness. With correlations between early and aged quality established, differences between factors of interest were tested. Correlations were compared using a Fisher’s z test. First, barrows and gilts were compared using a single sire line and raised in commercial conditions. Correlations between early and aged quality did not differ (P > 0.05) between barrows and gilts. Correlations between Pietrian- and Duroc-sired pigs were compared to determine correlation difference between sire lines using pigs from two different production focuses (meat quality vs. lean growth). Correlations between early ventral L* and aged chop L*, and early visual color and aged ventral L* differed (P ≤ 0.03) between Pietrain- and Duroc-sired pigs. However, the majority of correlations did not differ (P > 0.05) between sire lines. Correlations between packaging methods were compared by assigning boneless pork loins to one of two packaging methods, intact loins or case-ready chops. The correlations between early and aged quality traits did not differ (P > 0.05) between packaging methods. Overall, packers can use the same early quality characteristics to select for aged quality, regardless of sex, sire line or packaging method.

APA, Harvard, Vancouver, ISO, and other styles

39

Hardner, Craig, Michael Bird, Monica Heberling, and Peter Gore. "Genetic parameter estimates for Eucalyptus dunnii wood properties assessed by multiple methods." Agrociencia Uruguay 27, NE2 (November 20, 2023): e1318. http://dx.doi.org/10.31285/agro.27.1318.

Full text

Abstract:

Eucalyptus dunnii Maiden (Dunn’s white gum) is a fast-growing tall tree with favourable wood properties for pulp production. Effective selection and deployment of superior genetic material in plantations require knowledge of the genetic architecture of relevant traits, including genotype-by-environment interactions (G×E). However, as open pollination (OP) is a common mating strategy for deployment in eucalypts, the genetic architecture is complicated due to the mixture of self and inbreeding progeny. Here we report genetic parameters estimated from a multivariate analysis of wood quality traits (basic density, kraft pulp yield, and wood concentration of calcium, phosphorus and lignin) assessed on trials of OP progeny established at two locations (Mt. Gambier —Australia—, and Rio Negro —Uruguay) across multiple ages. In addition, density was assessed as basic density (BD) from 5 mm wood cores, pilodyn penetration (PP), near-infrared (NIR) spectroscopy and resistance drilling (RESI). Kraft pulp yield (KPY), and calcium, phosphorous and lignin content were also predicted from NIR. A factor analytic model was implemented to accommodate the complex data structure. Within trial phenotypic correlations among observations for density assessed by BD, RESI, and PP were moderate (0.47-0.70), although correlations with NIR-predicted density were lower (0.0-0.48). Average estimated individual OP repeatability (Rop) and individual narrow-sense heritability assuming a purely additive model and 30% selfing (h2) were lower for KPY (Rop = 0.12, h2 = 0.29) and higher for RESI assessed density (0.22, 0.55). Genetic correlations between the same trait across the Uruguayan trials were greater than 0.85, but within trait genetic correlations between the Australia and Uruguay trials were lower (0.59 - RESI, 0.82 - NIR density, 0.56 - NIR KPY, 0.66 - NIR Ca, 0.73 - NIR P), suggesting a degree of large-scale G×E. While these estimates may be confounded with NIR sampling methods and models and age-to-age correlations, they provide a solid foundation for developing breeding and deployment strategies across environments.

APA, Harvard, Vancouver, ISO, and other styles

40

Garnsworthy, Philip C., Gareth F. Difford, Matthew J. Bell, Ali R. Bayat, Pekka Huhtanen, Björn Kuhla, Jan Lassen, et al. "Comparison of Methods to Measure Methane for Use in Genetic Evaluation of Dairy Cattle." Animals 9, no. 10 (October 21, 2019): 837. http://dx.doi.org/10.3390/ani9100837.

Full text

Abstract:

Partners in Expert Working Group WG2 of the COST Action METHAGENE have used several methods for measuring methane output by individual dairy cattle under various environmental conditions. Methods included respiration chambers, the sulphur hexafluoride (SF6) tracer technique, breath sampling during milking or feeding, the GreenFeed system, and the laser methane detector. The aim of the current study was to review and compare the suitability of methods for large-scale measurements of methane output by individual animals, which may be combined with other databases for genetic evaluations. Accuracy, precision and correlation between methods were assessed. Accuracy and precision are important, but data from different sources can be weighted or adjusted when combined if they are suitably correlated with the ‘true’ value. All methods showed high correlations with respiration chambers. Comparisons among alternative methods generally had lower correlations than comparisons with respiration chambers, despite higher numbers of animals and in most cases simultaneous repeated measures per cow per method. Lower correlations could be due to increased variability and imprecision of alternative methods, or maybe different aspects of methane emission are captured using different methods. Results confirm that there is sufficient correlation between methods for measurements from all methods to be combined for international genetic studies and provide a much-needed framework for comparing genetic correlations between methods should these become available.

APA, Harvard, Vancouver, ISO, and other styles

41

Boloev, P. A., T. P. Gergenova, and N. A. Enina. "CORRELATIONS OF REGRESSION MODELS OF DIESEL OPERATION." Chronos: natural and technical sciences 7, no. 2(40) (October 3, 2022): 19–23. http://dx.doi.org/10.52013/2712-9691-40-2-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Jensen, Ib Thorsgaard, Luc Janss, Simona Radutoiu, and Rasmus Waagepetersen. "Compositionally aware estimation of cross-correlations for microbiome data." PLOS ONE 19, no. 6 (June 28, 2024): e0305032. http://dx.doi.org/10.1371/journal.pone.0305032.

Full text

Abstract:

In the field of microbiome studies, it is of interest to infer correlations between abundances of different microbes (here referred to as operational taxonomic units, OTUs). Several methods taking the compositional nature of the sequencing data into account exist. However, these methods cannot infer correlations between OTU abundances and other variables. In this paper we introduce the novel methods SparCEV (Sparse Correlations with External Variables) and SparXCC (Sparse Cross-Correlations between Compositional data) for quantifying correlations between OTU abundances and either continuous phenotypic variables or components of other compositional datasets, such as transcriptomic data. SparCEV and SparXCC both assume that the average correlation in the dataset is zero. Iterative versions of SparCEV and SparXCC are proposed to alleviate bias resulting from deviations from this assumption. We compare these new methods to empirical Pearson cross-correlations after applying naive transformations of the data (log and log-TSS). Additionally, we test the centered log ratio transformation (CLR) and the variance stabilising transformation (VST). We find that CLR and VST outperform naive transformations, except when the correlation matrix is dense. SparCEV and SparXCC outperform CLR and VST when the number of OTUs is small and perform similarly to CLR and VST for large numbers of OTUs. Adding the iterative procedure increases accuracy for SparCEV and SparXCC for all cases, except when the average correlation in the dataset is close to zero or the correlation matrix is dense. These results are consistent with our theoretical considerations.

APA, Harvard, Vancouver, ISO, and other styles

43

Ciuchi, Oana Mariana, and Simona Maria Stoleru. "Correlations between the Alternative Assessment Methods and the Pupil Counseling Process." Anuarul Universitatii Petre Andrei din Iasi - Fascicula: Asistenta Sociala, Sociologie, Psihologie 27 (December 10, 2021): 58–72. http://dx.doi.org/10.18662/upasw/27/53.

Full text

Abstract:

In this paper we present the role of using active-participatory teaching-learning-assessment methods by teachers in order to streamline the educational process in the pre-university education system and the possible correlations between these and the process of school counseling and vocational guidance of pupils. The micro-research conducted on a group of pupils from a pre-university educational unit representative for the system showed that pupils are attracted to activities in which teachers use modern teaching and assessment methods and they have a significant contribution in the training /development/deepening/practicing personal skills necessary for the educational development of pupils and their social evolution. Also, the pupils appreciate the activities of school counseling and vocational guidance as paramount for the elaboration of their own educational development plan and for their subsequent socio-professional evolution.

APA, Harvard, Vancouver, ISO, and other styles

44

Aljondi, Rowa, Cassandra Szoeke, Chris Steward, Elaine Lui, Salem Alghamdi, and Patricia Desmond. "The impact of hippocampal segmentation methods on correlations with clinical data." Acta Radiologica 61, no. 7 (November 12, 2019): 953–63. http://dx.doi.org/10.1177/0284185119885120.

Full text

Abstract:

Background In vivo measurement of hippocampal volume with magnetic resonance imaging (MRI) has become an important element in neuroimaging research. However, hippocampal volumetric findings and their relationship with cardiovascular risk factors and memory performance are still controversial and inconsistent for non-demented adults. Purpose To compare total and regional hippocampal volumes from manual tracing and automated Freesurfer segmentation methods and their relationship with mid-life clinical data and late-life verbal episodic memory performance in older women. Material and Methods This study used structural MRI datasets from 161 women who were scanned in 2012 and underwent neuropsychological assessments. Of these participants, 135 women had completed baseline measures of cardiovascular risk factors in 1992. Results Our results showed a significant correlation between manual tracing and automated Freesurfer output segmentations of total (r = 0.71), anterior (r = 0.65), and posterior (r = 0.38) hippocampal volumes. Mid-life Framingham Cardiovascular Risk Profile score is not associated with late-life hippocampal volumes, adjusted for intracranial volume, age, education, and apolipoprotein E gene ε4 status. Anterior hippocampal volume segmented either with manual tracing or automated Freesurfer software is sensitive to changes in mid-life high-density lipoprotein (HDL) cholesterol level, while posterior hippocampal volume is linked with verbal episodic memory performance in elderly women. Conclusion These findings support the use of Freesurfer automated segmentation measures for large datasets as being highly correlated with the manual tracing method. In addition, our results suggest intervention strategies that target mid-life HDL cholesterol level in women.

APA, Harvard, Vancouver, ISO, and other styles

45

Iskhakov, T. Sh, E. D. Lopaeva, A. N. Penin, G. O. Rytikov, and M. V. Chekhova. "Two methods for detecting nonclassical correlations in parametric scattering of light." JETP Letters 88, no. 10 (January 2008): 660–64. http://dx.doi.org/10.1134/s0021364008220050.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Sang, Yongli, Xin Dang, and Yichuan Zhao. "Jackknife empirical likelihood methods for Gini correlations and their equality testing." Journal of Statistical Planning and Inference 199 (March 2019): 45–59. http://dx.doi.org/10.1016/j.jspi.2018.05.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Petrosian, Vahé. "New Statistical Methods for Analysis of Large Surveys: Distributions and Correlations." International Astronomical Union Colloquium 184 (2002): 389–97. http://dx.doi.org/10.1017/s0252921100031122.

Full text

Abstract:

Abstract The aim of this paper is to describe new statistical methods for determination of the correlations among and distributions of physical parameters from a multivariate data with general and arbitrary truncations and selection biases. These methods, developed in collaboration with B. Efron of Department of Statistics at Stanford, can be used for analysis of combined data from many surveys with different and varied observational selection criteria. For clarity I will use the luminosity function of AGNs and its evolution to demonstrate the methods. I will first describe the general features of data truncation and present a brief review of past methods of analysis. Then I will describe the new methods and results from simulations testing their accuracy. Finally I will present the results from application of the methods to a sample of quasars.

APA, Harvard, Vancouver, ISO, and other styles

48

Elfving, Britt, and Åsa Dedering. "Task dependency in back muscle fatigue – Correlations between two test methods." Clinical Biomechanics 22, no. 1 (January 2007): 28–33. http://dx.doi.org/10.1016/j.clinbiomech.2006.08.007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Özkul, Özlem, Bayram Kızılkaya, Hüseyin Eren, Teslime Ayaz, and Cemil Bilir. "Correlations between estimating GFR methods and oncological outcomes during cancer chemotherapy." Ortadoğu Tıp Dergisi 11, no. 4 (December 1, 2019): 390–95. http://dx.doi.org/10.21601/ortadogutipdergisi.499665.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Amour, Laurent, Claudy Cancelier, Pierre Lévy-Bruhl, and Jean Nourrigat. "Decay of Quantum Correlations on a Lattice by Heat Kernel Methods." Annales Henri Poincaré 8, no. 8 (November 22, 2007): 1469–506. http://dx.doi.org/10.1007/s00023-007-0343-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!