Log in

Relevant bibliographies by topics / Descriptor moment / Journal articles

To see the other types of publications on this topic, follow the link: Descriptor moment.

Journal articles on the topic 'Descriptor moment'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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 'Descriptor moment.'

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

Ye Mei and D. Androutsos. "Robust Affine Invariant Region-Based Shape Descriptors: The ICA Zernike Moment Shape Descriptor and the Whitening Zernike Moment Shape Descriptor." IEEE Signal Processing Letters 16, no. 10 (2009): 877–80. http://dx.doi.org/10.1109/lsp.2009.2026119.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Bellarbi, Abdelkader, Nadia Zenati, Samir Otmane, and Hayet Belghit. "Learning moment-based fast local binary descriptor." Journal of Electronic Imaging 26, no. 2 (2017): 023006. http://dx.doi.org/10.1117/1.jei.26.2.023006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Miciak, Mirosław. "Invariant Radon-Moment Descriptor for Postal Applications." Image Processing & Communications 20, no. 4 (2015): 13–21. http://dx.doi.org/10.1515/ipc-2015-0040.

Full text

Abstract:

Abstract In this article a new solution of handwritten digits recognition system for postal applications is presented. Moreover, in this paper, a new approach of handwritten characters recognition was presented. The implemented algorithm is applied to recognition of postal items on the basis of postcode information. In connection with this article the research was carried with all digit characters used in authentic zip code of various mail pieces. Additionally, the paper contains some preliminary image processing for example normalization of the character. The main objective of this article is

APA, Harvard, Vancouver, ISO, and other styles

4

Wang, Shuenn-Shyang, Po-Cheng Chen, and Wen-Gou Lin. "Invariant pattern recognition by moment fourier descriptor." Pattern Recognition 27, no. 12 (1994): 1735–42. http://dx.doi.org/10.1016/0031-3203(94)90090-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Dinesh Kumar, V. P., and T. Tessamma. "Performance study of an improved Legendre Moment Descriptor as region-based shape descriptor." Pattern Recognition and Image Analysis 18, no. 1 (2008): 23–29. http://dx.doi.org/10.1134/s1054661808010045.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Wang, Xiao Chun, and Hong Lei Sun. "Shape Classification and Retrieval Based on the V-System." Applied Mechanics and Materials 328 (June 2013): 227–32. http://dx.doi.org/10.4028/www.scientific.net/amm.328.227.

Full text

Abstract:

In this paper, a method for describing 2D shape characteristic is presented. The similarity between any two shapes is measured by the Euclidian distance between their corresponding new shape descriptors. Accordingly, a new classification and retrieval technique is proposed by comparing the similarity between two shapes. To evaluate the proposed method, we applied it on the benchmark data set MPEG-7-PartB for shape classification and retrieval. The results show that the V-descriptor has higher efficiency than Zernike moment, pseudo Zernike moment, the central moment and moment invariants.

APA, Harvard, Vancouver, ISO, and other styles

7

Fan, Xiao Hu, Wei Ting Lin, Juan Cao, Ben Ling Li, and Yan Si. "A Description Method for MSER with SIFT Descriptor." Applied Mechanics and Materials 127 (October 2011): 115–20. http://dx.doi.org/10.4028/www.scientific.net/amm.127.115.

Full text

Abstract:

Maximally Stable Extremal Regions are robust to complex affine distortion and illumination changes between reference image and real-time image. On the basis of deeply research on the SIFT descriptor, this paper propose a description algorithm for MSER using SIFT descriptor. The Second central moment is used in the algorithm to make ellipse adjustment for each irregular MSER. Then a self-adaptable rectangle area, whose side is proportional to the minor axis of the ellipse, is constructed encircling each ellipse centre. Finally, a SIFT feature vector is formed to express the MSER, after processi

APA, Harvard, Vancouver, ISO, and other styles

8

Wang, Wei Zhuo, De Zhi Wang, John E. Mottershead, and George Lampeas. "Identification of Composite Delamination Using the Krawtchouk Moment Descriptor." Key Engineering Materials 569-570 (July 2013): 33–40. http://dx.doi.org/10.4028/www.scientific.net/kem.569-570.33.

Full text

Abstract:

Damage assessment of composite materials is crucial for health monitoring of engineering structures. It is particularly important to detect damage invisible to the human eye caused by low speed impact. Optical non-contact sensing techniques enable full-field measurements from structural responses. However, damage is generally associated with its local effect on deformation and strain patterns while full-field measured data is highly information redundant. It is possible to apply image processing techniques [1, 2] to extract succinct and efficient features, or attributes, from full-field data.

APA, Harvard, Vancouver, ISO, and other styles

9

White, Richard J., Honor C. Prentice, and Theo Verwijst. "Automated image acquisition and morphometric description." Canadian Journal of Botany 66, no. 3 (1988): 450–59. http://dx.doi.org/10.1139/b88-070.

Full text

Abstract:

Manual assembly of large morphometric data sets for investigations in population biology and biosystematics is extremely time consuming. Automated image handling allows rapid and accurate data collection and in addition makes it practicable to uncouple image acquisition and shape description. Variation can be characterized flexibly when these two phases of "scoring" are separated. Different descriptor systems can be used to describe a set of stored outlines, without having to return to the original objects. This paper introduces an integrated automated outline handling system and compares the

APA, Harvard, Vancouver, ISO, and other styles

10

Zhang, Hua-Zhen, Dong-Won Kim, Tae-Koo Kang, and Myo-Taeg Lim. "MIFT: A Moment-Based Local Feature Extraction Algorithm." Applied Sciences 9, no. 7 (2019): 1503. http://dx.doi.org/10.3390/app9071503.

Full text

Abstract:

We propose a local feature descriptor based on moment. Although conventional scale invariant feature transform (SIFT)-based algorithms generally use difference of Gaussian (DoG) for feature extraction, they remain sensitive to more complicated deformations. To solve this problem, we propose MIFT, an invariant feature transform algorithm based on the modified discrete Gaussian-Hermite moment (MDGHM). Taking advantage of MDGHM’s high performance to represent image information, MIFT uses an MDGHM-based pyramid for feature extraction, which can extract more distinctive extrema than the DoG, and MD

APA, Harvard, Vancouver, ISO, and other styles

11

Yu, Guorong, and Shuangming Zhao. "A New Feature Descriptor for Multimodal Image Registration Using Phase Congruency." Sensors 20, no. 18 (2020): 5105. http://dx.doi.org/10.3390/s20185105.

Full text

Abstract:

Images captured by different sensors with different spectral bands cause non-linear intensity changes between image pairs. Classic feature descriptors cannot handle this problem and are prone to yielding unsatisfactory results. Inspired by the illumination and contrast invariant properties of phase congruency, here, we propose a new descriptor to tackle this problem. The proposed descriptor generation mainly involves three steps. (1) Images are convolved with a bank of log-Gabor filters with different scales and orientations. (2) A window of fixed size is selected and divided into several bloc

APA, Harvard, Vancouver, ISO, and other styles

12

Kang, Tae-Koo. "Enhanced SIFT Descriptor Based on Modified Discrete Gaussian-Hermite Moment." ETRI Journal 34, no. 4 (2012): 572–82. http://dx.doi.org/10.4218/etrij.12.0111.0538.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

BUI, T. D., G. Y. CHEN, and L. FENG. "AN ORTHONORMAL–SHELL–FOURIER DESCRIPTOR FOR RAPID MATCHING OF PATTERNS IN IMAGE DATABASE." International Journal of Pattern Recognition and Artificial Intelligence 15, no. 08 (2001): 1213–29. http://dx.doi.org/10.1142/s0218001401001465.

Full text

Abstract:

Invariance and low dimension of features are of crucial significance in pattern recognition. This paper proposes a novel orthonormal shell Fourier descriptor that satisfies all of these demands. This method first performs orthonormal shell decomposition on the line moment that is obtained from the 2-D pattern, then applies Fourier transform on each scale of the shell coefficients. Unlike other existing wavelet-based methods, our method allows applying common orthonormal wavelets, such as Daubechies, Symmlet and Coiflet, therefore it is simple to implement. We study the structure of the filter

APA, Harvard, Vancouver, ISO, and other styles

14

Lei, Hai Long, and Sheng Yang. "Fusion of Image Contour Moments and Fourier Descriptors for the Hand Gesture Recognition." Advanced Materials Research 433-440 (January 2012): 5188–92. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.5188.

Full text

Abstract:

Hand is a highly variable organ and hand features are easily affected by environmental factors. Considering the characteristics of hand gesture, a novel hand gesture recognition algorithm based on hybrid moments is presented. First, According to the color cue, the hand shape is available to extract from the complicated background, then the contour moment invariant and Fourier Descriptor are extracted and fused into a hybrid feature, finally the hybrid feature are put into the BP network to identity. The experimental results show that the method has better robustness and higher recognition rate

APA, Harvard, Vancouver, ISO, and other styles

15

Arya, Devrat, and Jaimala Jha. "GLOBAL AND LOCAL DESCRIPTOR FOR CBIR AND IMAGE ENHANCEMENT USING MULTI-FEATURE FUSION METHOD." International Journal of Research -GRANTHAALAYAH 4, no. 6 (2016): 170–82. http://dx.doi.org/10.29121/granthaalayah.v4.i6.2016.2651.

Full text

Abstract:

The research is ongoing in CBIR it is getting much popular. In this retrieval of image is done using a technique that searches the necessary features of image. The main work of CBIR is to get retrieve efficient, perfect and fast results.In this algorithm, fused multi-feature for color, texture and figure features. A global and local descriptor (GLD) is proposed in this paper, called Global Correlation Descriptor (GCD) and Discrete Wavelet Transform (DWT), to excerpt color and surface feature respectively so that these features have the same effect in CBIR. In addition, Global Correlation Vecto

APA, Harvard, Vancouver, ISO, and other styles

16

Petelenz, Piotr, and Barbara Pac. "Is Dipole Moment a Valid Descriptor of Excited State’s Charge-Transfer Character?" Journal of the American Chemical Society 135, no. 46 (2013): 17379–86. http://dx.doi.org/10.1021/ja407379h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Zen Chen and Shu-Kuo Sun. "A Zernike Moment Phase-Based Descriptor for Local Image Representation and Matching." IEEE Transactions on Image Processing 19, no. 1 (2010): 205–19. http://dx.doi.org/10.1109/tip.2009.2032890.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Zhang, Xirui, Chao Yu, Jintong Guan, et al. "Polymeric heptazine imide by O doping and constructing van der Waals heterostructures for photocatalytic water splitting: a theoretical perspective from transition dipole moment analyses." Physical Chemistry Chemical Physics 22, no. 18 (2020): 9915–22. http://dx.doi.org/10.1039/c9cp06092h.

Full text

Abstract:

Transition dipole moment is suggested as a bridge between band structure and optical absorption in semiconductor photocatalysts and as referential descriptor for interlayer photoexcitation in layered heterostructures.

APA, Harvard, Vancouver, ISO, and other styles

19

Wang, Weizhuo, John E. Mottershead, and Cristinel Mares. "Mode-shape recognition and finite element model updating using the Zernike moment descriptor." Mechanical Systems and Signal Processing 23, no. 7 (2009): 2088–112. http://dx.doi.org/10.1016/j.ymssp.2009.03.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Huh, Yong, and Ki-Yun Yu. "Shape similarity measure for M:N areal object pairs using the Zernike moment descriptor." Korean Journal of Geomatics 30, no. 2 (2012): 153–62. http://dx.doi.org/10.7848/ksgpc.2012.30.2.153.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Papakostas, G. A., D. E. Koulouriotis, E. G. Karakasis, and V. D. Tourassis. "Moment-based local binary patterns: A novel descriptor for invariant pattern recognition applications." Neurocomputing 99 (January 2013): 358–71. http://dx.doi.org/10.1016/j.neucom.2012.06.031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Ahmad, Mian Ilyas, Peter Benner, Pawan Goyal, and Jan Heiland. "Moment-matching based model reduction for Navier-Stokes type quadratic-bilinear descriptor systems." ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 97, no. 10 (2017): 1252–67. http://dx.doi.org/10.1002/zamm.201500262.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Ni Ni, Soe, J. Tian, Pina Marziliano, and Hong-Tym Wong. "Anterior Chamber Angle Shape Analysis and Classification of Glaucoma in SS-OCT Images." Journal of Ophthalmology 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/942367.

Full text

Abstract:

Optical coherence tomography is a high resolution, rapid, and noninvasive diagnostic tool for angle closure glaucoma. In this paper, we present a new strategy for the classification of the angle closure glaucoma using morphological shape analysis of the iridocorneal angle. The angle structure configuration is quantified by the following six features: (1) mean of the continuous measurement of the angle opening distance; (2) area of the trapezoidal profile of the iridocorneal angle centered at Schwalbe's line; (3) mean of the iris curvature from the extracted iris image; (4) complex shape descri

APA, Harvard, Vancouver, ISO, and other styles

24

Kang, Tae-Koo, In-Hwan Choi, and Myo-Taeg Lim. "MDGHM-SURF: A robust local image descriptor based on modified discrete Gaussian–Hermite moment." Pattern Recognition 48, no. 3 (2015): 670–84. http://dx.doi.org/10.1016/j.patcog.2014.06.022.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Vassou, S. A., N. Anagnostopoulos, K. Christodoulou, A. Amanatiadis, and S. A. Chatzichristofis. "CoMo: a scale and rotation invariant compact composite moment-based descriptor for image retrieval." Multimedia Tools and Applications 78, no. 3 (2018): 2765–88. http://dx.doi.org/10.1007/s11042-018-5854-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Hu, Wen, Shigang Wang, Chun Hu, Hongtao Liu, and Jinqiu Mo. "Vision-based force measurement using geometric moment invariants." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 226, no. 10 (2012): 2589–601. http://dx.doi.org/10.1177/0954406211432983.

Full text

Abstract:

This article presents a new vision-based force measurement method to measure microassembly forces without directly computing the deformation. The shape descriptor of geometric moment invariants is used as a feature vector to describe the implicit relationship between an applied force and the deformation. Then, a standard library is established to map the corresponding relationship between the deformed cantilever under known forces and a set of feature vectors. Finally, a support vector machine compares the feature vector of deformed cantilever under an unknown force with those in the standard

APA, Harvard, Vancouver, ISO, and other styles

27

Zhong, Wenhui, Yue Qiu, Hujun Shen, et al. "Electronic Spin Moment As a Catalytic Descriptor for Fe Single-Atom Catalysts Supported on C2N." Journal of the American Chemical Society 143, no. 11 (2021): 4405–13. http://dx.doi.org/10.1021/jacs.1c00889.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

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.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

29

Zhao, Danpei, Ming Lu, Xuguang Zhang, Jun Shi, and Zhiguo Jiang. "Satellite Recognition via Sparse Coding Based Probabilistic Latent Semantic Analysis." International Journal of Humanoid Robotics 11, no. 02 (2014): 1450008. http://dx.doi.org/10.1142/s021984361450008x.

Full text

Abstract:

Traditional satellite recognition usually applies low-level features (e.g., invariant moment) to describe the global information of satellites. Therefore, the local property and the latent high-level semantic concepts of satellites are likely to be ignored. Recently, the topic model has been given more attention in object recognition field, which generally supposes that the local feature can be modeled as words and images are regarded as documents. Based on this assumption, it aims to discover the latent topics existed between words and documents and then utilizes the topics to represent the i

APA, Harvard, Vancouver, ISO, and other styles

30

Wang, Lina, Mingchao Sun, Jinghong Liu, Lihua Cao, and Guoqing Ma. "A Robust Algorithm Based on Phase Congruency for Optical and SAR Image Registration in Suburban Areas." Remote Sensing 12, no. 20 (2020): 3339. http://dx.doi.org/10.3390/rs12203339.

Full text

Abstract:

Automatic registration of optical and synthetic aperture radar (SAR) images is a challenging task due to the influence of SAR speckle noise and nonlinear radiometric differences. This study proposes a robust algorithm based on phase congruency to register optical and SAR images (ROS-PC). It consists of a uniform Harris feature detection method based on multi-moment of the phase congruency map (UMPC-Harris) and a local feature descriptor based on the histogram of phase congruency orientation on multi-scale max amplitude index maps (HOSMI). The UMPC-Harris detects corners and edge points based o

APA, Harvard, Vancouver, ISO, and other styles

31

Hirjani, Hirjani, Mudasir Mudasir, and Harno Dwi Pranowo. "Prediction of High Performance Liquid Chromatography Retention Time for Some Organic Compounds Based on Ab initio QSPR Study." Acta Chimica Asiana 1, no. 1 (2018): 24. http://dx.doi.org/10.29303/aca.v1i1.6.

Full text

Abstract:

Analysis of the quantitative relationship between structure and characteristics of 18 polyaromatic hydrocarbons has been done by quantum Ab initio Quantitative Structure-Property Relationship (QSPR) study at Hartree Fock level of theory. Moment dipole was used as the quantum chemical descriptors, whereas molecular weight and number of rings were applied for constitutional descriptor and the valence connectivity index as steric descriptors. The compound’s electronic structure was studied by molecular modeling and retention time (Tr) data were obtained from the literature. Multi-linear regressio

APA, Harvard, Vancouver, ISO, and other styles

32

Hadanu, Ruslin, Salim Idris, and I. Wayan Sutapa. "QSAR Analysis of Benzothiazole Derivatives of Antimalarial Compounds Based On AM1 Semi-Empirical Method." Indonesian Journal of Chemistry 15, no. 1 (2015): 86–92. http://dx.doi.org/10.22146/ijc.21228.

Full text

Abstract:

Quantitative Structure and Activity Relationship (QSAR) analysis of 13 benzothiazoles derivatives compound as antimalarial compounds have been performed using electronic descriptor of the atomic net charges (q), dipole moment (μ), ELUMO, EHOMO and polarizability (α). The electronic structures as descriptors were calculated through HyperChem for Windows 7.0 using AM1 semi-empirical method. The descriptors were obtained through molecules modeling to get the most stable structure after geometry optimization step. The antimalarial activity (IC50) were taken from literature. The best model of QSAR

APA, Harvard, Vancouver, ISO, and other styles

33

Zhu, Zun Shang, Yue Qiang Zhang, Xiang Zhou, and Yang Shang. "An Affine SIFT Matching Algorithm Based on Local Patch Shape Estimation." Applied Mechanics and Materials 519-520 (February 2014): 553–56. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.553.

Full text

Abstract:

In this paper we present an affine SIFT matching method to achieve reliable correspondence points in stereo matching with large viewpoint changes. We extended the affine invariant of the conventional SIFT approach by estimating the shape of the local patch around the interest point. Since we can obtain the scale information by SIFT detector, a second moment matrix (SMM) descriptor was employed to describe the shape. Furthermore, by comparing the shapes of the potential matches, we can normalize the template of SIFT descriptor and obtain the initial affine transformation. At last, we applied th

APA, Harvard, Vancouver, ISO, and other styles

34

Koverda, Mikhail N., Eugeny N. Ofitserov, and Anna A. Koverda. "The program «Moments of inertia» for calculating the moments of inertia of the rotational motion of molecules." Butlerov Communications 57, no. 3 (2019): 42–50. http://dx.doi.org/10.37952/roi-jbc-01/19-57-3-42.

Full text

Abstract:

The moment of inertia of the rotational motion I, as a descriptor of the spatial structure of the molecule, which determines the properties of a substance, in accordance with the works of recent years, begins to acquire significance in the study of the «structure – property» dependencies, allowing one to describe the change in the properties of compounds in homologous series and address odd homologues. The problem is that there is no universal and transparent method for calculating the moments of inertia of the rotational motion of molecules. Researchers are trying to solve this problem in var

APA, Harvard, Vancouver, ISO, and other styles

35

N’DRI, Jean Stéphane, Mamadou Guy-Richard KONÉ, Charles Guillaume KODJO, et al. "Quantitative Activity Structure Relationship (QSAR) of a Series of Azetidinones Derived from Dapsone by the Method of Density Functional Theory (DFT)." IRA-International Journal of Applied Sciences (ISSN 2455-4499) 8, no. 2 (2017): 55. http://dx.doi.org/10.21013/jas.v8.n2.p2.

Full text

Abstract:

This QSAR study, which involved a series of Azetidinones derived from 4,4'-diaminodiphenylsulfone (dapsone), yielded two models based on molecular descriptors and the antibacterial activities Escherichia coli and Staphylococcus aureus.The molecular descriptors were obtained by applying the methods of quantum chemistry at the B3LYP/6-31G (d) level. The statistical indicators of the first model which is a function of the Escherichia coli activity are: the coefficient of determination R<sup>2</sup> equals 0.992, the standard deviation S equals 0.342, the Fischer coefficient F equals 1

APA, Harvard, Vancouver, ISO, and other styles

36

Moraczewski, Ireneusz R. "Analyzing leaf margins with the use of a shape feature description language." Canadian Journal of Botany 76, no. 3 (1998): 552–60. http://dx.doi.org/10.1139/b98-003.

Full text

Abstract:

A method for automated analysis of leaf margins is presented. A detailed algorithm for the decomposition of a leaf into its central part and marginal projections (teeth) is given. Cut-off projections that cannot be decomposed any further are approximated to simple geometrical figures. The set of cut-off projections is then characterized by tens of attributes, which in turn, can constitute an input for multivariate methods. In contrast to well-known shape descriptor systems (e.g., moment invariants, elliptic Fourier coefficients, chain codes) this method is highly specific, permits plausible bo

APA, Harvard, Vancouver, ISO, and other styles

37

Yangali-Quintanilla, V., T. U. Kim, M. Kennedy, and G. Amy. "Modeling of RO/NF membrane rejections of PhACs and organic compounds: a statistical analysis." Drinking Water Engineering and Science 1, no. 1 (2008): 7–15. http://dx.doi.org/10.5194/dwes-1-7-2008.

Full text

Abstract:

Abstract. Rejections of pharmaceutical compounds (Ibuprofen, Diclofenac, Clofibric acid, Naproxen, Primidone, Phenacetin) and organic compounds (Dichloroacetic acid, Trichloroacetic acid, Chloroform, Bromoform, Trichloroethene, Perchloroethene, Carbontetrachloride, Carbontetrabromide) by NF (Filmtec, Saehan) and RO (Filmtec, Saehan, Toray, Koch) membranes were studied. Chloroform presented the lowest rejection due to small molar volume, equivalent width and length. Diclofenac and Primidone showed high rejections related to high molar volume and length. Dichloroacetic acid and Trichloroacetic a

APA, Harvard, Vancouver, ISO, and other styles

38

Annastasia ERAZUA, Ehimen, and Babatunde Benjamin ADELEKE. "DFT and Molecular Docking Investigation of Potential Anticancer Properties of Some Flavonoids." Journal of Pure and Applied Chemistry Research 8, no. 3 (2019): 225–31. http://dx.doi.org/10.21776/ub.jpacr.2019.008.03.485.

Full text

Abstract:

There is a continuous need to discover and obtain more efficient drug-like molecule to suppress cancer in human being. Recently researchers are using molecular docking technique to improve the understanding of the interaction between drug and receptor, in other to obtain novel drugs for more efficient usage. Anticancer activities of some selected flavonoids were studied using quantum chemical method through Density Functional Theory (DFT) and molecular docking approach. These Flavoniods were docked against breast cancer cell line (3s7s) using Autodock tool, AutoDockVina as docking tools and Bi

APA, Harvard, Vancouver, ISO, and other styles

39

Dixit, Karishma, and Anand Singh Jalal. "A Vision-Based Approach for Indian Sign Language Recognition." International Journal of Computer Vision and Image Processing 2, no. 4 (2012): 25–36. http://dx.doi.org/10.4018/ijcvip.2012100103.

Full text

Abstract:

The sign language is the essential communication method between the deaf and dumb people. In this paper, the authors present a vision based approach which efficiently recognize the signs of Indian Sign Language (ISL) and translate the accurate meaning of those recognized signs. A new feature vector is computed by fusing Hu invariant moment and structural shape descriptor to recognize sign. A multi-class Support Vector Machine (MSVM) is utilized for training and classifying signs of ISL. The performance of the algorithm is illustrated by simulations carried out on a dataset having 720 images. E

APA, Harvard, Vancouver, ISO, and other styles

40

Nagy, Melinda, Kristóf Petrovay, Alexandre Lemerle, and Paul Charbonneau. "Towards an algebraic method of solar cycle prediction." Journal of Space Weather and Space Climate 10 (2020): 46. http://dx.doi.org/10.1051/swsc/2020051.

Full text

Abstract:

An algebraic method for the reconstruction and potentially prediction of the solar dipole moment value at sunspot minimum (known to be a good predictor of the amplitude of the next solar cycle) was suggested in the first paper in this series. The method sums up the ultimate dipole moment contributions of individual active regions in a solar cycle: for this, detailed and reliable input data would in principle be needed for thousands of active regions in a solar cycle. To reduce the need for detailed input data, here we propose a new active region descriptor called ARDoR (Active Region Degree of

APA, Harvard, Vancouver, ISO, and other styles

41

Sobańska, Anna W., Jeremy Robertson, and Elżbieta Brzezińska. "Application of RP-18 TLC Retention Data to the Prediction of the Transdermal Absorption of Drugs." Pharmaceuticals 14, no. 2 (2021): 147. http://dx.doi.org/10.3390/ph14020147.

Full text

Abstract:

Several chromatographic parameters (RM0 and S obtained from RP-18 TLC with methanol—pH 7.4 phosphate buffer mobile phases by extrapolation to zero concentration of methanol; Rf and RM obtained from RP-18 TLC with acetonitrile—pH 7.4 phosphate buffer 70:30 v/v as a mobile phase) and calculated molecular descriptors (molecular weight—MW; molar volume—VM; polar surface area—PSA; total count of nitrogen and oxygen atoms—(N+O); H-bond donor count—HD; H-bond acceptor count—HA; distribution coefficient—log D; total energy—ET; binding energy—Eb; hydration energy—Eh; energy of the highest occupied mole

APA, Harvard, Vancouver, ISO, and other styles

42

Al Abiad, Nahime, Hélène Pillet, and Bruno Watier. "A Mechanical Descriptor of Instability in Human Locomotion: Experimental Findings in Control Subjects and People with Transfemoral Amputation." Applied Sciences 10, no. 3 (2020): 840. http://dx.doi.org/10.3390/app10030840.

Full text

Abstract:

While multiple criteria to quantify gait instability exist, some limitations hinder their computation during realistic walking conditions. A descriptor, computed as the distance between the center of mass of the body and the minimal moment axis ( d C O M − Δ ) , has been proposed recently. This present study aims at characterizing the behavior of the mentioned descriptor in a population at a higher risk of falls. Five individuals with transfemoral amputation and 14 healthy individuals were involved in an experiment composed of motion capture and force plates acquisition during overground walki

APA, Harvard, Vancouver, ISO, and other styles

43

Ahmad, Mian Ilyas, Peter Benner, and Lihong Feng. "Interpolatory model reduction for quadratic-bilinear systems using error estimators." Engineering Computations 36, no. 1 (2018): 25–44. http://dx.doi.org/10.1108/ec-04-2018-0162.

Full text

Abstract:

Purpose The purpose of this paper is to propose an interpolation-based projection framework for model reduction of quadratic-bilinear systems. The approach constructs projection matrices from the bilinear part of the original quadratic-bilinear descriptor system and uses these matrices to project the original system. Design/methodology/approach The projection matrices are constructed by viewing the bilinear system as a linear parametric system, where the input associated with the bilinear part is treated as a parameter. The advantage of this approach is that the projection matrices can be cons

APA, Harvard, Vancouver, ISO, and other styles

44

Bostan, Hamed, Naomie Salim, Zeti Azura Hussein, Peter Klappa, and Mohd Shahir Shamsir. "CMD: A Database to Store the Bonding States of Cysteine Motifs with Secondary Structures." Advances in Bioinformatics 2012 (October 10, 2012): 1–5. http://dx.doi.org/10.1155/2012/849830.

Full text

Abstract:

Computational approaches to the disulphide bonding state and its connectivity pattern prediction are based on various descriptors. One descriptor is the amino acid sequence motifs flanking the cysteine residue motifs. Despite the existence of disulphide bonding information in many databases and applications, there is no complete reference and motif query available at the moment. Cysteine motif database (CMD) is the first online resource that stores all cysteine residues, their flanking motifs with their secondary structure, and propensity values assignment derived from the laboratory data. We

APA, Harvard, Vancouver, ISO, and other styles

45

FENG, L., T. D. BUI, and Y. Y. TANG. "CLASSIFICATION OF SIMILAR 2-D OBJECTS BY WAVELET-SPARSE-MATRIX (WSM) METHOD." International Journal of Pattern Recognition and Artificial Intelligence 15, no. 02 (2001): 329–45. http://dx.doi.org/10.1142/s0218001401000873.

Full text

Abstract:

This paper proposes a novel method called Wavelet-Sparse-Matrix (WSM) to extract the spatial features of 2-D objects for classifying objects that have subtle differences. The differences between these objects are present in the spatial orientations of the objects, or in the local positions of points on the contours of the objects. The separable wavelets are able to distinguish these differences and to separate them into three sparse subpatterns. Sparse matrix technique has the ability to rearrange nonzero elements in a sparse matrix by moving them as close together as possible. WSM method is a

APA, Harvard, Vancouver, ISO, and other styles

46

Golik, Mykola, Tetiana Titko, Angelina Shaposhnyk, et al. "QSAR analysis and molecular docking study of pyrrolo- and pyridoquinolinecarboxamides with diuretic activity." ScienceRise: Pharmaceutical Science, no. 3(31) (June 30, 2021): 19–27. http://dx.doi.org/10.15587/2519-4852.2021.234493.

Full text

Abstract:

The aim. The aim of the study was to reveal QSAR and ascertain the possible mechanism of action via docking study in the row of tricyclic quinoline derivatives with diuretic activity. Materials and methods. Pyrrolo- and pyridoquinolinecarboxamides with proven diuretic activity were involved in the study. Molecular descriptors were calculated using HyperChem and GRAGON software, and QSAR models were built using BuildQSAR software. For receptor-oriented flexible docking, the Autodock 4.2 software package was used. Results. Multivariate linear QSAR models were built on two datasets of

APA, Harvard, Vancouver, ISO, and other styles

47

N’dri, Jean Stéphane, Bafétigué Ouattara, Mamadou Guy-Richard Koné, et al. "Quantitative Structure-Activity Study against Plasmodium falciparum of a Series of Derivatives of Azetidine-2-Carbonitriles by the Method of Density Functional Theory." Mediterranean Journal of Chemistry 11, no. 2 (2021): 162. http://dx.doi.org/10.13171/mjc02103241572mgrk.

Full text

Abstract:

<p>This work deals with a Quantitative Structure-Activity study against <em>Plasmodium</em> <em>falciparum</em> of a series of Azetidine-2-carbonitrile derivatives. Using the MLR and MNLR methods from excel and xlstat software, we have been able to develop two QSAR models based on molecular descriptors and plasmodial activity. Calculation level B3LYP/6-311 G (d, p) was used to determine molecular descriptors. The statistical indicators of the first model obtained by the MLR method are: the regression coefficient found was <strong>R<sup>2</sup>&lt

APA, Harvard, Vancouver, ISO, and other styles

48

Damian, Felicia Anisoara, Simona Moldovanu, Nilanjan Dey, Amira S. Ashour, and Luminita Moraru. "Feature Selection of Non-Dermoscopic Skin Lesion Images for Nevus and Melanoma Classification." Computation 8, no. 2 (2020): 41. http://dx.doi.org/10.3390/computation8020041.

Full text

Abstract:

(1) Background: In this research, we aimed to identify and validate a set of relevant features to distinguish between benign nevi and melanoma lesions. (2) Methods: Two datasets with 70 melanomas and 100 nevi were investigated. The first one contained raw images. The second dataset contained images preprocessed for noise removal and uneven illumination reduction. Further, the images belonging to both datasets were segmented, followed by extracting features considered in terms of form/shape and color such as asymmetry, eccentricity, circularity, asymmetry of color distribution, quadrant asymmet

APA, Harvard, Vancouver, ISO, and other styles

49

Kumar, M. Dinesh, P. Rajesh, R. Priya Dharsini, and M. Ezhil Inban. "Molecular Geometry, NLO, MEP, HOMO-LUMO and Mulliken Charges of Substituted Piperidine Phenyl Hydrazines by Using Density Functional Theory." Asian Journal of Chemistry 32, no. 2 (2019): 401–7. http://dx.doi.org/10.14233/ajchem.2020.22444.

Full text

Abstract:

The quantum chemical calculations of organic compounds viz. (E)-1-(2,6-bis(4-chlorophenyl)-3-ethylpiperidine-4-ylidene)-2-phenyl-hydrazine (3ECl), (E)-1-(2,6-bis(4-chlorophenyl)-3-methylpiperidine-4-ylidene)-2-phenylhydrazine (3MCl) and (E)-1-(2,6-bis(4-chloro-phenyl)-3,5-dimethylpiperidine-4-ylidene)-2-phenylhydrazine (3,5-DMCl) have been performed by density functional theory (DFT) using B3LYP method with 6-311G (d,p) basis set. The electronic properties such as Frontier orbital and band gap energies have been calculated using DFT. Global reactivity descriptor has been computed to predict ch

APA, Harvard, Vancouver, ISO, and other styles

50

Harris, D., M. Menabde, A. Seed, and G. Austin. "Breakdown coefficients and scaling properties of rain fields." Nonlinear Processes in Geophysics 5, no. 2 (1998): 93–104. http://dx.doi.org/10.5194/npg-5-93-1998.

Full text

Abstract:

Abstract. The theory of scale similarity and breakdown coefficients is applied here to intermittent rainfall data consisting of time series and spatial rain fields. The probability distributions (pdf) of the logarithm of the breakdown coefficients are the principal descriptor used. Rain fields are distinguished as being either multiscaling or multiaffine depending on whether the pdfs of breakdown coefficients are scale similar or scale dependent, respectively. Parameter estimation techniques are developed which are applicable to both multiscaling and multiaffine fields. The scale parameter (wi

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!