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Journal articles on the topic 'Principal coordinate analysis'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Elmaci, Nuran, and R. Stephen Berry. "Principal coordinate analysis on a protein model." Journal of Chemical Physics 110, no. 21 (1999): 10606–22. http://dx.doi.org/10.1063/1.478992.

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Kosaki, Kenjiro, Marilyn C. Jones, and Carla Stayboldt. "Zimmer phocomelia: Delineation by principal coordinate analysis." American Journal of Medical Genetics 66, no. 1 (1996): 55–59. http://dx.doi.org/10.1002/(sici)1096-8628(19961202)66:1<55::aid-ajmg12>3.0.co;2-p.

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Molytė, Alma, Alina Urnikytė, and Vaidutis Kučinskas. "A comparative analysis of mathematical methods for homogeneity estimation of the Lithuanian population." Acta medica Lituanica 26, no. 4 (2020): 211–16. http://dx.doi.org/10.6001/actamedica.v26i4.4206.

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Background. Population genetic structure is one of the most important population genetic parameters revealing its demographic features. The aim of this study was to evaluate the homogeneity of the Lithuanian population on the basis of the genome-wide genotyping data. The comparative analysis of three methods – multidimensional scaling, principal components, and principal coordinates analysis – to visualize multidimensional genetics data was performed. The results of visualization (mapping images) are also presented. Materials and methods. The data set consisted of 425 samples from six ethnolin

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4

Kadyrov, Ablaikhan, Altay Ussenbayev, Dariyash Kurenkeyeva, Berdaly Kurenkey, Sarsenbay Abdrakhmanov, and Nurlan Tashatov. "Principal component analysis in the epidemiology of diarrhoea in calves." Indonesian Journal of Electrical Engineering and Computer Science 30, no. 3 (2023): 1762. http://dx.doi.org/10.11591/ijeecs.v30.i3.pp1762-1770.

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The paper is the first to use principal component analysis (PCA) in veterinary epidemiology and aims to identify the most significant agents of diarrhoea in calves. Data were collected from 245 calves on 32 farms within 13 districts of Northern Kazakhstan. Epidemiological data were simulated in R, using standard PCA modules. The data clustering was carried out based on the prevalence of seven enteropathogens for an age group dataset (represented by four animal groups) and a farm type dataset (by three farm types depending on herd size). The simulation revealed that the components identified he

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Ablaikhan, Kadyrov, Ussenbayev Altay, Kurenkeyeva Dariyash, Kurenkey Berdaly, Abdrakhmanov Sarsenbay, and Tashatov Nurlan. "Principal component analysis in the epidemiology of diarrhoea in calves." Principal component analysis in the epidemiology of diarrhoea in calves 30, no. 3 (2023): 1762–70. https://doi.org/10.11591/ijeecs.v30.i3.pp1762-1770.

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The paper is the first to use principal component analysis (PCA) in veterinary epidemiology and aims to identify the most significant agents of diarrhoea in calves. Data were collected from 245 calves on 32 farms within 13 districts of Northern Kazakhstan. Epidemiological data were simulated in R, using standard PCA modules. The data clustering was carried out based on the prevalence of seven enteropathogens for an age group dataset (represented by four animal groups) and a farm type dataset (by three farm types depending on herd size). The simulation revealed that the components identified he

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6

Hrenar, T., I. Primožič, D. Fijan, and M. Majerić Elenkov. "Conformational analysis of spiro-epoxides by principal component analysis of molecular dynamics trajectories." Physical Chemistry Chemical Physics 19, no. 47 (2017): 31706–13. http://dx.doi.org/10.1039/c7cp05600a.

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Zhang, Tiansi, Xiaoxin Huang, and Deming Zhu. "Resonant Homoclinic Flips Bifurcation in Principal Eigendirections." Abstract and Applied Analysis 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/267826.

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A codimension-4 homoclinic bifurcation with one orbit flip and one inclination flip at principal eigenvalue direction resonance is considered. By introducing a local active coordinate system in some small neighborhood of homoclinic orbit, we get the Poincaré return map and the bifurcation equation. A detailed investigation produces the number and the existence of 1-homoclinic orbit, 1-periodic orbit, and double 1-periodic orbits. We also locate their bifurcation surfaces in certain regions.

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Wang, Yu, Fengzhu Sun, Wei Lin, and Shuqin Zhang. "AC-PCoA: Adjustment for confounding factors using principal coordinate analysis." PLOS Computational Biology 18, no. 7 (2022): e1010184. http://dx.doi.org/10.1371/journal.pcbi.1010184.

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Confounding factors exist widely in various biological data owing to technical variations, population structures and experimental conditions. Such factors may mask the true signals and lead to spurious associations in the respective biological data, making it necessary to adjust confounding factors accordingly. However, existing confounder correction methods were mainly developed based on the original data or the pairwise Euclidean distance, either one of which is inadequate for analyzing different types of data, such as sequencing data. In this work, we proposed a method called Adjustment for

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Uriu, K., R. Sunaga, M. Goda, and K. Ohnishi. "3P294 Phylogenetic position of Nymphaeaceae, elucidated by principal coordinate analysis." Seibutsu Butsuri 44, supplement (2004): S263. http://dx.doi.org/10.2142/biophys.44.s263_2.

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Zhao, Qian, Deyu Meng, Zongben Xu, and Chenqiang Gao. "A block coordinate descent approach for sparse principal component analysis." Neurocomputing 153 (April 2015): 180–90. http://dx.doi.org/10.1016/j.neucom.2014.11.038.

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11

Raithby, Paul R., Gregory P. Shields, Frank H. Allen, and W. D. Samuel Motherwell. "Structure correlation study of four-coordinate copper(I) and (II) complexes." Acta Crystallographica Section B Structural Science 56, no. 3 (2000): 444–54. http://dx.doi.org/10.1107/s0108768199016870.

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The geometries of four-coordinate CuI and CuII complexes in the Cambridge Structural Database (CSD) have been analysed systematically and compared using symmetry-deformation coordinates and principal component analysis. The observed stereochemistries have been rationalized in terms of the d-electron configurations, interligand repulsion and π-bonding effects. The results confirm that the majority of four-coordinate copper(I) complexes in the CSD adopt tetrahedral geometries and deviations from tetrahedral symmetry are caused by the presence of chelating ligands or by the incorporation of coppe

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Woolley, Kevin J., and Medha Athalye. "A use for principal Coordinate analysis in the comparison of protein sequences." Biochemical and Biophysical Research Communications 140, no. 3 (1986): 808–13. http://dx.doi.org/10.1016/0006-291x(86)90705-9.

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13

Sabaghnia, Naser, Mohtasham Mohammadi, and Rahmatollah Karimizadeh. "Principal coordinate analysis of genotype × environment interaction for grain yield of bread wheat in the semi-arid regions." Genetika 45, no. 3 (2013): 691–701. http://dx.doi.org/10.2298/gensr1303691s.

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Multi-environmental trials have significant main effects and significant multiplicative genotype ? environment (GE) interaction effect. Principal coordinate analysis (PCOA) offers a more appropriate statistical analysis to deal with such situations, compared to traditional statistical methods. Eighteen bread wheat genotypes were grown in four semi-arid regions over three year seasons to study the GE interaction and yield stability and obtained data on grain yield were analyzed using PCOA. Combined analysis of variance indicated that all of the studied effects including the main effects of geno

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Cheng, Xiang Wen, and Hai Bing Du. "Resistance Analysis of Belt Conveyor during Horizontal Turning Section." Advanced Materials Research 201-203 (February 2011): 467–70. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.467.

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Force state of belt conveyor during horizontal turning section was researched to improve the design level of belt conveyor with horizontal turning. On this basis,three-dimensional mechanical model describing the force state of conveyor belt during horizontal turning section was built. Then each force acting on conveyor belt was decomposed along principal coordinate direction by coordinate transformation, and the balance equations were established at different coordinate axes directions, respectively. According to the calculation formula of running resistance derived by balance equations, the f

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Molytė, Alma, and Alina Urnikytė. "A comparative analysis of proximity measures to determine the Lithuanian population structure." Lietuvos matematikos rinkinys 62 (December 20, 2021): 86–93. http://dx.doi.org/10.15388/lmr.2021.25232.

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In this paper the multidimensional scaling, the principal coordinate and principal component methods for the Lithuanian population structure have investigated, taken that the proximity measures are Euclid, Gower, Bray-Curtis, Kulczynski, Jaccard and Morisita. The genome-wide single nucleotide polymorphism genetic data analyzed. A comparative analysis of proximity measures performed. The results of visualization are also presented.

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Kumar, Keshav, and Felipe Cava. "Principal coordinate analysis assisted chromatographic analysis of bacterial cell wall collection: A robust classification approach." Analytical Biochemistry 550 (June 2018): 8–14. http://dx.doi.org/10.1016/j.ab.2018.04.008.

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Dhau, Shadana, Ridho Ananda, Isnaini Nurisusilawati, and Nur Afrina Huda Zulkarnain. "OPTIMASI RUTE DISTRIBUSI FROZEN FOOD MENGGUNAKAN METODE PRINCIPAL COORDINATE ANALYSIS DAN NEAREST NEIGHBOR." Jurnal SINTA: Sistem Informasi dan Teknologi Komputasi 1, no. 4 (2025): 162–70. https://doi.org/10.61124/sinta.v1i4.34.

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PT Subur Mulya Sejahtera yang bergerak di bidang distributor produk sosis merupakan salah satu distributor frozen food produk Sosis Kanzler yang berlokasi di Daerah Istimewa Yogyakarta. Banyak konsumen yang memesan produk di lokasi yang berbeda dengan cakupan wilayah pendistribusian antara lain adalah daerah Solo Raya. Saat ini pengiriman masih menggunakan rute awal yang belum dikaji secara analitis sehingga masih berpotensi untuk dioptimalkan. Salah satu cara yang dapat dilakukan untuk membuat sistem distribusi dapat berjalan lebih optimal ialah mengoptimalkan rute distribusi dengan pendekata

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Dray, Stéphane, Pierre Legendre, and Pedro R. Peres-Neto. "Spatial modelling: a comprehensive framework for principal coordinate analysis of neighbour matrices (PCNM)." Ecological Modelling 196, no. 3-4 (2006): 483–93. http://dx.doi.org/10.1016/j.ecolmodel.2006.02.015.

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Pavoine, Sandrine, Anne-Béatrice Dufour, and Daniel Chessel. "From dissimilarities among species to dissimilarities among communities: a double principal coordinate analysis." Journal of Theoretical Biology 228, no. 4 (2004): 523–37. http://dx.doi.org/10.1016/j.jtbi.2004.02.014.

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Zulkifli, Monadia Turrahmi. "Kebijakan Kepala Sekolah Dalam Meningkatkan Disiplin Kerja Tenaga Kependidikan di SMKN 1 Batusangkar." Jurnal Pendidikan dan Kewirausahaan 11, no. 3 (2023): 961–73. http://dx.doi.org/10.47668/pkwu.v11i3.901.

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The main problem in this study is that there are some training faculty who actually abuse the school rules, for example, arrive later than expected, leave early and there are also teaching staff who seek work elsewhere for their own benefit, it can be said that almost every day there are teaching staff who appear after the expected time, in completing the work requested by the leadership in accordance with their obligations and their abilities are still not ideal at work. the principal of SMKN 1 Batusangkar plays seven parts in further developing the work discipline of the training staff, in p

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Sant'Anna, Isabela de Castro, Gabi Nunes Silva, Vinicius Quintão Carneiro, Daiana Salles Pontes, Moyses Nascimento, and Cosme Damião Cruz. "Comparison of projection of distance techniques for genetic diversity studies." Acta Scientiarum. Agronomy 42 (November 20, 2019): e42483. http://dx.doi.org/10.4025/actasciagron.v42i1.42483.

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The objective of this study was to compare different graphical dispersion analysis techniques in two- or three-dimensional planes. In this study, the data from different published works were used in order to determine the best methodology for analyzing the genetic diversity of different species. In this study, efficiency is measured by the amount of original distance absorbed by the projection of distances technique, which in the case of major components is equal to the amount of total variation originally available and retained by the principal components used for dispersion purposes. The pro

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Mei, Ling, Ai Zhao Zhou, and Peng Ming Jiang. "Numerical Analysis of Ultimate Bearing Capacity of Embedded Foundation." Applied Mechanics and Materials 170-173 (May 2012): 766–71. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.766.

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Soil is divided for finding the ultimate bearing capacity of foundation with given buried depth and size. Supposing a uniform load acts on the foundation, Mindlin’s integral formula and corner points method are used to get extra stress of every mesh knot by MATLAB program, then the principal stress is found. Combining with failure criterion, MATLAB program is used to find coordinates of points which are destroyed. Using graphic processing function of MATLAB, the failure points are showed in the coordinate. Increasing the rectangular uniform load, the failure points are found until these points

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Frisvad, Jens C. "Correspondence, principal coordinate, and redundancy analysis used on mixed chemotaxonomical qualitative and quantitative data." Chemometrics and Intelligent Laboratory Systems 23, no. 1 (1994): 213–29. http://dx.doi.org/10.1016/0169-7439(94)00003-4.

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24

Leech, J. W., R. L. Correll, and Aung Kyaw Myint. "Use of principal-coordinate analysis to assist in aggregating species for volume-table construction." Forest Ecology and Management 40, no. 3-4 (1991): 279–88. http://dx.doi.org/10.1016/0378-1127(91)90046-x.

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Meng, Deyu, Hengbin Cui, Zongben Xu, and Kaili Jing. "Following the entire solution path of sparse principal component analysis by coordinate-pairwise algorithm." Data & Knowledge Engineering 88 (November 2013): 25–36. http://dx.doi.org/10.1016/j.datak.2013.08.007.

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Wu, Fan, Zhicheng Zhuang, Hsin-Lung Liu, and Yan-Chyuan Shiau. "Evaluation of Water Resources Carrying Capacity Using Principal Component Analysis: An Empirical Study in Huai’an, Jiangsu, China." Water 13, no. 18 (2021): 2587. http://dx.doi.org/10.3390/w13182587.

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With the rapid development of urbanization, problems such as the tight supply and demand of water resources and the pollution of the water environment have become increasingly prominent, and the pressure on the carrying capacity of water resources has gradually increased. In order to better promote the sustainable development of cities, it is extremely important to coordinate the relationship between water resources and economic society. This study analyzed the current research status of water resources carrying capacity from two aspects, i.e., research perspective and research methodology, es

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Zhang, Shengkai, Li Gong, Qi Zeng, Wenhao Li, Feng Xiao, and Jintao Lei. "Imputation of GPS Coordinate Time Series Using missForest." Remote Sensing 13, no. 12 (2021): 2312. http://dx.doi.org/10.3390/rs13122312.

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The global positioning system (GPS) can provide the daily coordinate time series to help geodesy and geophysical studies. However, due to logistics and malfunctioning, missing values are often “seen” in GPS time series, especially in polar regions. Acquiring a consistent and complete time series is the prerequisite for accurate and reliable statical analysis. Previous imputation studies focused on the temporal relationship of time series, and only a few studies used spatial relationships and/or were based on machine learning methods. In this study, we impute 20 Greenland GPS time series using

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Xiong, Zhu Lin, Ce Lun Liu, Wei Du, and Ze Bin Xie. "Non-Line-of-Sight Positioning Algorithm Based on Robust Principal Component Analysis." Advanced Materials Research 998-999 (July 2014): 889–93. http://dx.doi.org/10.4028/www.scientific.net/amr.998-999.889.

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Non-Line-of-Sight (NLOS) propagation problems badly degrade the accuracy of wireless mobile positioning algorithms, which incurs a large positive bias in the Time-of-Arrival (TOA) measurements. Under several assumptions, the Hankel matrix of TOA data can be decomposed into a low-rank distance matrix and a sparse error matrix. This paper utilizes the robust principal component analysis (RPCA) method to solve the decomposition problem. After estimating the distance, the positioning problem can use existing Line-of-Sight (LOS) based algorithms to calculate the coordinate of the mobile station (MS

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Sun, Ning, and Jin Min Wei. "Extraction of Inertial Parameters Based on 3D-Voxel Model of Equal Volume." Applied Mechanics and Materials 733 (February 2015): 889–92. http://dx.doi.org/10.4028/www.scientific.net/amm.733.889.

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Because of 3D model in continuous quality can be expressed by a lot of voxels with same size and small enough dimensions, a detection method of inertial parameters based on principal direction of voxel model is proposed. The method first searches three-spindle for voxel model by employing famous principal component analysis (PCA) method and establishes a new coordinates system by three-spindle above. Next, inertial parameters curve of the model can be obtained by calculating principal moment of inertia before translating the origin of the new coordinate system to the minimum point of the model

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Udage, Savithri Sarojani, and Deepthi Yakandawala. "Morphometric analysis of the genus Monochoria (Pontederiaceae) in Sri Lanka." Bangladesh Journal of Plant Taxonomy 24, no. 1 (2017): 13–22. http://dx.doi.org/10.3329/bjpt.v24i1.33001.

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The genus Monochoria is represented in Sri Lanka by only two species, M. hastata and M. vaginalis. Of the two species M. vaginalis exhibits a high morphological diversity. A morphometric analysis was performed on the Sri Lankan members of the genus Monochoria to evaluate the morphological diversity exhibited by comparing 34 vegetative, anatomical and reproductive characters. Both cluster and principal coordinate analyses resulted in four clusters of which one corresponded to M. hastata, while M. vaginalis was divided into three phenetic groups indicating that the Sri Lankan M. vaginalis is a s

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Ludajic, Gordana, Lato Pezo, Nada Filipovic, and Jelena Filipovic. "The content of essential and toxic elements in wheat bran and flour." Chemical Industry 69, no. 4 (2015): 417–23. http://dx.doi.org/10.2298/hemind140322056l.

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The research was conducted with the aim of examining the presence of toxic elements (Pb, Cd, As and Hg) and essential elements (Zn, Cu, Fe and Mn) in selected samples of wheat flour and bran by Inductively Coupled Plasma Mass Spectrometry. The principal component analysis has been used for assessing the variety of samples. Quality results show that the first two principal components, accounting for 84.22% of the total variability, can be considered sufficient for data representation and the first two principal components for toxic elements and essential microelements. Zn (16.38%), Mn (16.19%),

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Wang, L. L., Pei Qi Ge, and Chang Hou Lu. "Numerical Analysis on Hybrid High Speed Sleeve Bearing." Key Engineering Materials 315-316 (July 2006): 531–35. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.531.

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Hybrid sleeve bearing is widely used in high speed principal axis system. Numerical analysis on a spiral oil wedges hybrid sleeve bearing of high speed principal axis is investigated in this paper. The finite differential equations of Reynolds, film thickness and velocity in an oblique coordinate system are obtained. By means of the finite differential method, loading capacity, pressure distribution, and stream of lubricating oil of the hybrid sleeve bearing are computed and analyzed. The results show that spiral oil wedges can produce the flow separation between hot oil and cold oil, and avoi

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FREIRE, SUSANA E., MARIANA A. GROSSI, LAURA IHARLEGUI, CAMILA L. ABARCA, CLAUDIA MONTI, and NÉSTOR D. BAYÓN. "Taxonomic Identity of Gamochaeta americana and Gamochaeta coarctata (Gnaphalieae, Asteraceae)." Phytotaxa 523, no. 4 (2021): 273–83. http://dx.doi.org/10.11646/phytotaxa.523.4.1.

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Gamochaeta (Asteraceae, Gnaphalieae) consists of about 60 species primarily distributed in tropical and subtropical America. Gamochaeta americana and G. coarctata are closely related species that have been mainly differentiated by its phyllary apices, plant height, width of basal leaves, and involucre height. In order to evaluate whether G. americana and G. coarctata can be differentiated on a morphological basis, we performed a morphometric analysis. A matrix of 24 morphological characters and 99 specimens was analyzed using two multivariate approaches: Cluster Analysis and Principal Coordina

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KARIMIZADEH, Rahmatollah, Ali ASGHARI, Rahim CHINIPARDAZ, et al. "Use of Principal Coordinate Analysis for Measuring GE Interactions in Rain-Fed Durum Wheat Genotypes." Tarım Bilimleri Dergisi 25, no. 1 (2019): 38–46. http://dx.doi.org/10.15832/ankutbd.538993.

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Hare, Stephanie R., Lars A. Bratholm, David R. Glowacki, and Barry K. Carpenter. "Low dimensional representations along intrinsic reaction coordinates and molecular dynamics trajectories using interatomic distance matrices." Chemical Science 10, no. 43 (2019): 9954–68. http://dx.doi.org/10.1039/c9sc02742d.

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Principal Component Analysis on a series of molecular geometries (e.g., a reaction coordinate or trajectory) provides maximum structural variance in the fewest dimensions, and so can offer an objective, comprehensible depiction of the transformation.

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Kang, Yaw-Hong, and Hong-Sen Yan. "CURVATURE ANALYSIS OF VARIABLE PITCH LEAD SCREWS WITH CYLINDRICAL MESHING ELEMENTS." Transactions of the Canadian Society for Mechanical Engineering 20, no. 2 (1996): 139–57. http://dx.doi.org/10.1139/tcsme-1996-0008.

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Based on coordinate transformation matrices and theory of gearing, we derive the mathematical expressions of surface geometry and the location of contact point of variable pitch lead screws. According to curvature theory, we obtain the principal curvatures, the principal directions, and the orientation of the contacting line at any contact point. Furthermore, the condition of avoiding undercutting of the screw surface, the reduced radius of curvature along any tangential direction, and the angle between the normal of contact line and the relative velocity are also derived. The result of this w

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Jiang, Le. "Research on Wine Classification Based on BP Neural Network." International Journal of Computer Science and Information Technology 3, no. 3 (2024): 300–306. http://dx.doi.org/10.62051/ijcsit.v3n3.31.

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The Wine Wine Dataset is a publicly available dataset from UCI above, which is the result of a chemical analysis of wines grown in the same region of Italy from three different varieties, red, white and rosé. BP neural network is a common artificial neural network model that is used to supervise learning tasks. It is a multi-layer feedforward neural network that updates network parameters through a backpropagation algorithm to minimize the loss function. Principal component analysis (PCA) is a commonly used data dimensionality reduction technique to discover the main features in a dataset. It

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Karuc, Emre, and Melik Dolen. "Novel Touch-Trigger Probe for Coordinate Measuring Machines." Key Engineering Materials 450 (November 2010): 19–22. http://dx.doi.org/10.4028/www.scientific.net/kem.450.19.

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A novel touch-trigger probe system is proposed in this paper. The probe houses the stylus shaft on a special diaphragm spring that is exclusively designed with the utilization of Finite Element Analysis (FEA). In the probe system, Giant Magneto-Resistive (GMR) sensors are employed to measure the motion of the stylus shaft in the principal directions. The proposed (and implemented) probe is tested on a three-axis CNC electrical discharge machine (EDM) and the results acquired from those experiments are discussed. The preliminary work presented in this paper demonstrates the capabilities of GMR

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Nantongo, Judith Ssali, Juventine Boaz Odoi, Hillary Agaba, and Samson Gwali. "SilicoDArT and SNP markers for genetic diversity and population structure analysis of Trema orientalis; a fodder species." PLOS ONE 17, no. 8 (2022): e0267464. http://dx.doi.org/10.1371/journal.pone.0267464.

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Establishing the genetic diversity and population structure of a species can guide the selection of appropriate conservation and sustainable utilization strategies. Next-generation sequencing (NGS) approaches are increasingly being used to generate multi-locus data for genetic structure determination. This study presents the genetic structure of a fodder species -Trema orientalis based on two genome-wide high-throughput diversity array technology (DArT) markers; silicoDArT and single nucleotide polymorphisms (SNPs). Genotyping of 119 individuals generated 40,650 silicoDArT and 4767 SNP markers

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Levy Jose Acuña and Inero Ancho. "Leadership Innovations During COVID-19 Pandemic: Practices of Filipino Principals in Teacher Professional Development." e-Jurnal Penyelidikan dan Inovasi 9, no. 2 (2022): 135–55. http://dx.doi.org/10.53840/ejpi.v9i2.33.

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This study was focused on how principals manage the professional development of their teachers during the COVID-19 pandemic. This also explored their practices in providing necessary learning opportunities to teachers during the sudden shift of learning modality. In addition, the practices of principals in managing teachers’ professional development have also been investigated. This study utilized the case study method of research using in‐depth semi‐structured topic‐related interviews with six (6) principals each from elementary, junior high school and senior high school in a division in the

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Gupta, Ramwant, U. S. Chandrashekhar, J. B. Yadav, S. K. Chakrabarty, and M. Dadlani. "Assessment of genetic relatedness among Indian mustard (Brassica juncea) genotypes using morphological traits and DNA marker." Indian Journal of Agricultural Sciences 82, no. 9 (2012): 746–52. http://dx.doi.org/10.56093/ijas.v82i9.23827.

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The genetic diversity and relatedness of 17 Indian mustard (Brassica juncea (L.) Czern & Coss) genotypes were assessed with morpho-physiological characteristics and 10 RAPD markers. Molecular parameters, viz. total number of bands, average polymorphic band, average per cent polymorphism, average polymorphic information content (PIC), average expected gene diversity (Hi), Jaccard’s similarity coefficient, principal coordinate analysis (PCA) and dendrogram generated using RAPD markers. Ten RAPD primers generated 62 loci with 50 polymorphic and 12 monomorphic showing 6.2 loci per primer. Prim

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Liu, Di, Daniel Percival, and Stephen Fienberg. "User Interest and Interaction Structure in Online Forums." Proceedings of the International AAAI Conference on Web and Social Media 4, no. 1 (2010): 283–86. http://dx.doi.org/10.1609/icwsm.v4i1.14059.

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We present a new similarity measure tailored to posts in an online forum. Our measure takes into account all the available information about user interest and interaction — the content of posts, the threads in the forum, and the author of the posts. We use this post similarity to build a similarity between users, based on principal coordinate analysis. This allows easy visualization of the user activity as well. Similarity between users has numerous applications, such as clustering or classification. We show that including the author of a post in the post similarity has a smoothing effect on p

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Zhao, J.-S., F. Chu, and Z.-J. Feng. "Identification of principal screws of two- and three-screw systems." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 221, no. 12 (2007): 1701–15. http://dx.doi.org/10.1243/09544062jmes752.

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The current paper proposes a unified analytical methodology to identify the principal screws of two- and three-screw systems. Based on the definition of the pitch of a screw, it first obtains an identical homogeneous quadric equation. According to functional analysis theory, it is known that the partial derivatives of an identical quadric equation with respect to its variables must be zero. Therefore, the paper deduces a set of linear homogeneous equations that are made up of the partial derivatives of the quadric equation. With the existing criteria of non-zero solutions for homogeneous linea

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Ludajic, Gordana, Lato Pezo, Jelena Filipovic, Vladimir Filipovic, and Nenad Kosanic. "Determination of essential and toxic elements in products of milling wheat." Chemical Industry 70, no. 6 (2016): 707–15. http://dx.doi.org/10.2298/hemind151119008l.

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In the production bread wheat bran is used as a raw material rich in dietary fiber. Therefore, it is necessary to monitor the content of essential and toxic elements in the flour and bran. This paper investigates essential (Zn, Cu, Fe and Mn) and toxic (Pb, Cd, Hg and As) elements in products of milling wheat grown in the whole territory of Banat, the region in Serbia. Inductively Coupled Plasma Mass Spectrometry was used for analysis. The mean contents of the following elements Pb, Cd, Hg, As, Fe, Mn and Zn in wheat kernels were 0.143 mg/kg, 0.007 mg/kg, 0.017 mg/kg, 35.7643 mg/kg, 50.865 mg/

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Pakniyat, H., W. Powell, E. Baird, et al. "AFLP variation in wild barley (Hordeum spontaneum C. Koch) with reference to salt tolerance and associated ecogeography." Genome 40, no. 3 (1997): 332–41. http://dx.doi.org/10.1139/g97-046.

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Thirty-nine genotypes of Hordeum spontaneum were selected from three geographically separated areas (southwestern, northern, and southeastern) of the Fertile Crescent. The lines were subject to AFLP (amplified fragment length polymorphism) analysis from which a similarity matrix was produced. A dendrogram of the data showed, with two exceptions, that the genotypes grouped together according to area of origin. This was confirmed by principal coordinate analysis in which the first principal coordinate separated the genotypes of the southwestern area from the other two areas, which in turn could

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MANAWADUGE, CHAPA G., DEEPTHI YAKANDAWALA, and DONALD H. LES. "Morphometric analysis reveals a new species of Aponogeton (Aponogetonaceae) in Sri Lanka." Phytotaxa 275, no. 3 (2016): 243. http://dx.doi.org/10.11646/phytotaxa.275.3.3.

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A morphometric analysis of Sri Lankan Aponogeton was performed in order to clarify species delimitations and to facilitate their identifications by comparing states coded for 61 vegetative and reproductive characters. Both cluster analysis and principal coordinate analysis resolved five discrete phenetic groups within the genus in the island. Four of these clusters corresponded well with the four previously reported species (A. rigidifolius, A. jacobsenii, A. crispus and A. natans) whereas a fifth cluster delimited a new Aponogeton species, A. dassanayakei, from the wet lowland regions of Sri

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Feng, Bin, Zaiming Liu, Haofei Zhang, and Haozhe Fan. "Research on the Measurement System and Remote Calibration Technology of a Dual Linear Array Camera." Measurement Science Review 24, no. 3 (2024): 105–12. http://dx.doi.org/10.2478/msr-2024-0015.

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Abstract In order to accurately measure the flight trajectory of the projectile in a long-distance target range, it is important to establish a vertical target measurement system with a two-line array camera at several positions along the range. In the present work, a calibration system using dual theodolites is proposed to calibrate the vertical target measurement system of a dual linear array camera at different positions along a long target range. The present study investigates the principle of intersection measurement in the vertical target measurement system with a double linear array cam

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Yu, Fanyang, Anahita Fathi Kazerooni, Erik Toorens, et al. "NIMG-22. AN AI-BASED COORDINATE SYSTEM ELUCIDATES RADIOGENOMIC HETEROGENEITY OF GLIOBLASTOMA VIA DEEP LEARNING AND MANIFOLD EMBEDDINGS." Neuro-Oncology 24, Supplement_7 (2022): vii166. http://dx.doi.org/10.1093/neuonc/noac209.640.

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Abstract PURPOSE There is evidence that molecular heterogeneity of glioblastoma is associated with heterogeneity of MR imaging signatures. Modern machine learning models, such as deep neural networks, provide a tool for capturing such complex relationships in high-dimensional datasets. This study leverages recent advances in visualizing neural networks to construct a radiogenomics coordinate system whose axes reflect the expression of imaging signatures of genetic mutations commonly found in glioblastoma. METHODS Multi-parametric MRI (mpMRI) scans (T1, T1-Gd, T2, T2-FLAIR, DSC, DTI) of 254 sub

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Ding, Ing-Jr, and Chong-Min Ruan. "A Study on Utilization of Three-Dimensional Sensor Lip Image for Developing a Pronunciation Recognition System." Journal of Imaging Science and Technology 63, no. 5 (2019): 50402–1. http://dx.doi.org/10.2352/j.imagingsci.technol.2019.63.5.050402.

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Abstract The acoustic-based automatic speech recognition (ASR) technique has been a matured technique and widely seen to be used in numerous applications. However, acoustic-based ASR will not maintain a standard performance for the disabled group with an abnormal face, that is atypical eye or mouth geometrical characteristics. For governing this problem, this article develops a three-dimensional (3D) sensor lip image based pronunciation recognition system where the 3D sensor is efficiently used to acquire the action variations of the lip shapes of the pronunciation action from a speaker. In th

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Setotaw, Tesfahun Alemu, Eveline Teixeira Caixeta, Guilherme Ferreira Pena, Eunize Maciel Zambolim, Antonio Alves Pereira, and Ney Sussumu Sakiyama. "Breeding potential and genetic diversity of "Híbrido do Timor" coffee evaluated by molecular markers." Crop Breeding and Applied Biotechnology 10, no. 4 (2010): 298–304. http://dx.doi.org/10.1590/s1984-70332010000400003.

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AFLP, RAPD and SSR molecular markers were used to study the genetic diversity and genetic structure of the Híbrido de Timor germplasm. The principal coordinate analysis, UPGMA cluster analysis based on genetic dissimilarity of Jaccard, Bayesian model-based cluster analysis, percentage of polymorphic loci, Shannon's information index and Nei gene diversity were employed to assess the genetic diversity. The analyses demonstrated a high genetic diversity among Híbrido de Timor accessions. UPGMA and Bayesian cluster analyses grouped the accessions into three clusters. The genetic structure of Híbr

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