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Journal articles on the topic 'Homogeneity index'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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1

Prasad, Mridula, Geert Postma, Lavinia Morosi, et al. "Drug-Homogeneity Index in Mass-Spectrometry Imaging." Analytical Chemistry 90, no. 22 (2018): 13257–64. http://dx.doi.org/10.1021/acs.analchem.8b01870.

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2

Peng, Y., and L. J. Sun. "Towards an Index of Asphalt Mixture Homogeneity." Road Materials and Pavement Design 10, no. 3 (2009): 545–67. http://dx.doi.org/10.1080/14680629.2009.9690213.

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3

Petrova, Deva, Snezana Smickovska, and Emilija Lazarevska. "Conformity Index and Homogeneity Index of the Postoperative Whole Breast Radiotherapy." Open Access Macedonian Journal of Medical Sciences 5, no. 6 (2017): 736–39. http://dx.doi.org/10.3889/oamjms.2017.161.

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BACKGROUND: The treatment of breast cancer involves a multidisciplinary approach in which radiotherapy plays a key role.AIM: The conformity index and the homogeneity index are two analysis tools of a treatment plan using conformal radiotherapy. The purpose of this article is an analysis of these two parameters in the assessment of the treatment plans in 58 patients undergoing postoperative radiotherapy of the whole breast.MATERIALS AND METHODS: All 58 patients participating in the study had a conservatively treated early-stage breast cancer. The treatment was performed using a standard regimen

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4

Ando, Shuji. "A Bivariate Index for Visually Measuring Marginal Inhomogeneity in Square Tables." International Journal of Statistics and Probability 8, no. 5 (2019): 58. http://dx.doi.org/10.5539/ijsp.v8n5p58.

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For square tables, the marginal homogeneity model which has a structure that the row marginal distribution is equal to the column marginal distribution was proposed. Thereafter, various extended models of marginal homogeneity have been proposed, these models can be classified into two types marginal inhomogeneity. On the other hand, various indexes which measure the degree of deviation from marginal homogeneity have been proposed. However these indexes cannot concurrently define degrees of deviation from marginal homogeneity with respect to two types marginal inhomogeneity. This paper proposes

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5

Vuckovic, Milivoj, and Branko Stajic. "Wood volume distribution as an indicatorof stand homogeneity." Bulletin of the Faculty of Forestry, no. 94 (2006): 101–8. http://dx.doi.org/10.2298/gsf0694101v.

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The results of stand homogeneity definition are analyzed based on the percentage ratio of the distribution of tree number and the distribution of volume per diameter degrees. Homogeneity is defined based on homogeneity index (H) and Lorenz?s curve. Homogeneous stand is the hypothetical stand whose trees have equal volumes. Real stands, depending on their silvicultural form and treatment, as well as the development stage, are more or less distant from the absolutely homogenous state. The effect of the diameter degree width on the accuracy of homogeneity index calculation was determined and the

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6

Liu, Xu, Yong Liu, Hongzhen Jiang, et al. "Measurement of refractive index homogeneity of parallel optical component." Optik 125, no. 16 (2014): 4308–12. http://dx.doi.org/10.1016/j.ijleo.2014.03.034.

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7

Santos, J. S., E. Ono, and Carlos Kenichi Suzuki. "Effect of the Nanostructure Control on the Novel Optical Properties of Silica Photonic Glass Synthesized by VAD Method." Materials Science Forum 636-637 (January 2010): 361–68. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.361.

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This research reports the development of high homogeneity silica glass for photonic components synthesized by the VAD (Vapor-phase Axial Deposition) method. Structural radial homogeneity of silica soot were characterized by scanning electron microscopy (SEM) and small angle X-ray scattering (SAXS). It was established a relationship with the refractive index homogeneity, n, and the birefringence of consolidated boules characterized through interferometry, optical spectrometry, and polarization spectrophotometry. By controlling the silica soot nanostructure during the deposition stage, a materi

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8

Hlosta, Jakub, Lucie Jezerská, Jiří Rozbroj, David Žurovec, Jan Nečas, and Jiří Zegzulka. "DEM Investigation of the Influence of Particulate Properties and Operating Conditions on the Mixing Process in Rotary Drums: Part 2—Process Validation and Experimental Study." Processes 8, no. 2 (2020): 184. http://dx.doi.org/10.3390/pr8020184.

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The process of homogenization of particulates is an indispensable part of many industrial processes, and, therefore, it is necessary to pay a special attention to this area and develop it. This paper deals with a complex study of homogenization of particulate matters in a rotary drum in terms of shape, size, and density of particles. In addition, the influence of operating parameters, such as drum filling capacity, rotational speed, and drum filling pattern are also investigated. Studies of reproducibility of discrete element method simulations, effects of rotary drum sizes or effects of drum

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9

Rosas, Juan G., and Marcelo Blanco. "A criterion for assessing homogeneity distribution in hyperspectral images. Part 1: Homogeneity index bases and blending processes." Journal of Pharmaceutical and Biomedical Analysis 70 (November 2012): 680–90. http://dx.doi.org/10.1016/j.jpba.2012.06.036.

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10

Fei, Liang, Mai Lyu-bo, Zhou Tao-geng, Wang Lei, and Sha Ding-guo. "Uncertainty evaluation in infrared optical material refractive index homogeneity measurement." Journal of Applied Optics 36, no. 1 (2015): 82–87. http://dx.doi.org/10.5768/jao201536.0103004.

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11

Zhu Sheng-Jun, Wang Sheng-Lai, Liu Lin, et al. "Refractive index homogeneity of large scale potassium dihydrogen phosphate crystal." Acta Physica Sinica 63, no. 10 (2014): 107701. http://dx.doi.org/10.7498/aps.63.107701.

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12

Nishimura, Hitoshi, Kenbu Teramoto, Shingo Ohdera, and Hajime Yuasa. "The Detection of Surface Cracks by the Index of Homogeneity." Proceedings of the JSME annual meeting 2002.2 (2002): 409–10. http://dx.doi.org/10.1299/jsmemecjo.2002.2.0_409.

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13

Yan, Lingling, Yingjie Xu, Xinyuan Chen, Xin Xie, Bin Liang, and Jianrong Dai. "A new homogeneity index definition for evaluation of radiotherapy plans." Journal of Applied Clinical Medical Physics 20, no. 11 (2019): 50–56. http://dx.doi.org/10.1002/acm2.12739.

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14

Bonora, E., D. Stefanelli, and G. Costa. "Nectarine Fruit Ripening and Quality Assessed Using the Index of Absorbance Difference (IAD)." International Journal of Agronomy 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/242461.

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Consistency of fruit quality is extremely important in horticulture. Fruit growth and quality in nectarine are affected by fruit position in the canopy, related to the tree shape. The “open shaped” training systems, such as Tatura Trellis, improve fruit growth and quality. The Index of Absorbance Difference (IAD) is a new marker that characterizes climacteric fruit during ripening. A study on fruit ripening was performed by using theIADon nectarine to monitor fruit maturity stages of two cultivars trained as Tatura Trellis in Victoria, Australia. Fruit of cv “Summer Flare 34” (“SF34”) grown in

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15

Stavrev, Petar, and Alan Reid. "Euler deconvolution of gravity anomalies from thick contact/fault structures with extended negative structural index." GEOPHYSICS 75, no. 6 (2010): I51—I58. http://dx.doi.org/10.1190/1.3506559.

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The concept of extended Euler homogeneity of potential fields is examined with respect to all variables of length dimension in their analytical expressions. This reveals the possible existence of positive degrees of homogeneity or corresponding negative structural indices considered as extensions of the Thompson’s structural indices in Euler deconvolution. This approach is implemented for a contact gravity model, represented by a 2D semi-infinite slab with large thickness relative to its depth. Applying Euler deconvolution on synthetic and field data indicates that the positive degree of homog

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16

Tanaka, Hidekazu, Masaya Ito, Takahiro Yamaguchi, et al. "High Tangent Radiation Therapy With Field-in-Field Technique for Breast Cancer." Breast Cancer: Basic and Clinical Research 11 (January 1, 2017): 117822341773129. http://dx.doi.org/10.1177/1178223417731297.

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Purpose: We evaluated whether the field-in-field (FIF) technique improves the homogeneity of the target in high tangent radiation therapy (HTRT). Materials and Methods: This study included 30 patients. In total, 3 HTRT plans were created: 1 with conventional opposed fields (Conv-p), 1 with the FIF technique (FIF-p), and 1 with FIF technique using lung-blocked subfields (FIF-LB-p). Results: The maximum dose of the breast and planning target volume (PTV) was significantly lower for FIF-p and FIF-LB-p than Conv-p. Homogeneity index of PTV was also significantly lower for FIF-p and FIF-LB-p than C

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17

Rim, Chang-Soo. "Homogeneity of Climate Aridity Index Trends Using Mann-Kendall Trend Test." Journal of Korea Water Resources Association 47, no. 7 (2014): 643–56. http://dx.doi.org/10.3741/jkwra.2014.47.7.643.

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18

Kataria, Tejinder, Kuldeep Sharma, Vikraman Subramani, KP Karrthick, and ShyamS Bisht. "Homogeneity Index: An objective tool for assessment of conformal radiation treatments." Journal of Medical Physics 37, no. 4 (2012): 207. http://dx.doi.org/10.4103/0971-6203.103606.

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19

Intajag, S., K. Paithoonwatanakij, and A. P. Cracknell. "Automatic image segmentation using fuzzy hit or miss and homogeneity index." International Journal of Remote Sensing 27, no. 1 (2006): 203–21. http://dx.doi.org/10.1080/01431160500166524.

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20

Shestakovskyi, O. P. "Index of national homogeneity support: experience of adaptation of intolerance scale." Ukrainian Society 2010, no. 1 (2010): 91–103. http://dx.doi.org/10.15407/socium2010.01.091.

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21

Kinsvater, Paul, Roland Fried, and Jona Lilienthal. "Regional extreme value index estimation and a test of tail homogeneity." Environmetrics 27, no. 2 (2015): 103–15. http://dx.doi.org/10.1002/env.2376.

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22

Thevenot, Jérôme, Jukka Hirvasniemi, Mikko Finnilä, et al. "Trabecular Homogeneity Index Derived From Plain Radiograph to Evaluate Bone Quality." Journal of Bone and Mineral Research 28, no. 12 (2013): 2584–91. http://dx.doi.org/10.1002/jbmr.1987.

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23

Cao, Tingting, Zhitao Dai, Zhen Ding, Wuzhou Li, and Hong Quan. "Analysis of different evaluation indexes for prostate stereotactic body radiation therapy plans: conformity index, homogeneity index and gradient index." Precision Radiation Oncology 3, no. 3 (2019): 72–79. http://dx.doi.org/10.1002/pro6.1072.

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24

Osman, Mohamed, Dian Tao Zhang, Yun Xiang Tong, Yu Feng Zheng, and Li Li. "Graded Transitions Homogeneity for Ti-50.8%Ni Processed by ECAP." Advanced Materials Research 1082 (December 2014): 90–94. http://dx.doi.org/10.4028/www.scientific.net/amr.1082.90.

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Ti-50.8%Ni shape memory alloy was subjected to four passes equal channel angular pressing (ECAP) with angle 120◦ via route Bc at 450°C. The deformation homogeneity was analyzed on planes across the thickness of the deformed sample by Deform-3D software. Two methods were used from the simulation model to quantify deformation homogeneity , including strain standard deviation (SSD) and inhomogeneity index (Ci). In addition, The deformation heterogeneity of ECAP was analyzed experimentally from microhardness inhomogeneity index ( HII) based on Vickers microhardness test results.In the present work

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25

Stavrev, Petar, and Alan Reid. "Degrees of homogeneity of potential fields and structural indices of Euler deconvolution." GEOPHYSICS 72, no. 1 (2007): L1—L12. http://dx.doi.org/10.1190/1.2400010.

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Homogeneity is a well-known property of the potential fields of simple point sources used in field inversion. We find that the analytical expressions of potential fields created by sources of complicated shape and constant or variable density or magnetization also show this property. This is true if all variables of length dimension are involved in the test of homogeneity. The coordinates of observation points and the source coordinates and sizes form an extended set of variables, in relation to which the field expression is homogeneous. In this case, the principal definition of homogeneity ap

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26

Yu, Cheng, Gabor Jozsef, Michael L. J. Apuzzo, and Zbigniew Petrovich. "Dosimetric Comparison of CyberKnife with Other Radiosurgical Modalities for an Ellipsoidal Target." Neurosurgery 53, no. 5 (2003): 1155–63. http://dx.doi.org/10.1227/01.neu.0000088805.01793.5a.

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Abstract OBJECTIVE To compare treatment plans obtained with the CyberKnife (CK) (Accuray, Inc., Sunnyvale, CA) with those of other commonly used radiosurgical modalities, such as the gamma knife (GK), linear accelerator multiple arcs, conformally shaped static fields, and intensity-modulated radiotherapy (IMRT). METHODS An ellipsoidal simulated target was chosen centrally located in a three-dimensional model of a patient's head acquired with magnetic resonance or computed tomographic imaging. It was 25 mm in diameter and 35 mm long. The aims of treatment plans were 100% target volume coverage

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27

Tahata, Kouji, Kanau Kawasaki, and Sadao Tomizawa. "Asymmetry Index on Marginal Homogeneity for Square Contingency Tables with Ordered Categories." Open Journal of Statistics 02, no. 02 (2012): 198–203. http://dx.doi.org/10.4236/ojs.2012.22023.

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28

Thieme, A. H., C. Stromberger, P. Ghadjar, A. Grün, S. Zschaek, and V. Budach. "PO-0641: A novel voxel based homogeneity index: clinical implications for WBRT." Radiotherapy and Oncology 123 (May 2017): S335—S336. http://dx.doi.org/10.1016/s0167-8140(17)31078-2.

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29

Intajag, S., K. Paithoonwatanakij, and A. P. Cracknell. "Iterative satellite image segmentation by fuzzy hit-or-miss and homogeneity index." IEE Proceedings - Vision, Image, and Signal Processing 153, no. 2 (2006): 206. http://dx.doi.org/10.1049/ip-vis:20045211.

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30

Fiałkowski, M., P. Garstecki, and R. Hołyst. "Liquids with internal surfaces at and out of equilibrium: the homogeneity index." Journal of Molecular Liquids 112, no. 1-2 (2004): 29–35. http://dx.doi.org/10.1016/j.molliq.2003.11.006.

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31

Cirino, E. T., I. Iftimia, and T. C. Lo. "Using Dose Homogeneity Index and Conformity Index to Evaluate Prostate High-dose-rate Plan Quality and Consistency." International Journal of Radiation Oncology*Biology*Physics 84, no. 3 (2012): S770—S771. http://dx.doi.org/10.1016/j.ijrobp.2012.07.2062.

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32

Reid, Alan B., and Jeffrey B. Thurston. "The structural index in gravity and magnetic interpretation: Errors, uses, and abuses." GEOPHYSICS 79, no. 4 (2014): J61—J66. http://dx.doi.org/10.1190/geo2013-0235.1.

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The structural index (SI) is based on the concept of Euler homogeneity, a description of scaling behavior. It has found wide use in potential-field depth estimation and is a constant integer for simple sources with single singularities (points, lines, thin-bed faults, sheet edges, infinite contacts). For these cases, the SI is identical to the index of a simple power-law field fall-off with distance. The simple Euler formulation is only strictly correct for such simple sources and integer SI values. The widespread use of the simple Euler method on more complex structures, using fractional SI v

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33

Apriantoro, Nursama Heru, Bambang Sutrisno Wibowo, Muhammad Irsal, and Prima Chintya Delsi Kasih. "Result Analysis Of Treatment Planning System Between 3-Dimensional Conformal Radiation Therapy Technique And Intensity Modulated Radiation Therapy Technique In Nasopharyngeal Cancer Cases." SANITAS : Jurnal Teknologi dan Seni Kesehatan 8, no. 1 (2017): 29–34. http://dx.doi.org/10.36525/sanitas.2017.5.

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This study aims to analyze the difference in results between TPS 3D-CRT radiotherapy irradiation technique and IMRT radiotherapy irradiation technique in nasopharyngeal cancer cases based on the doses received by the target volume and organs at risk and results of isodosis curve which include the value of the index conformity and homogeneity index value. Type of this research is quantitative experimental method. As for the population was taken in 10 patients consisting of 5 male and 5 female patients with nasopharyngeal cancer who received radiation therapy with 3D-CRT irradiation technique an

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34

De Michele, C., and R. Rosso. "A multi-level approach to flood frequency regionalisation." Hydrology and Earth System Sciences 6, no. 2 (2002): 185–94. http://dx.doi.org/10.5194/hess-6-185-2002.

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Abstract. A multi-level approach to flood frequency regionalisation is given. Based on observed flood data, it combines physical and statistical criteria to cluster homogeneous groups in a geographical area. Seasonality analysis helps identify catchments with a common flood generation mechanism. Scale invariance of annual maximum flood, as parameterised by basin area, is used to check the regional homogeneity of flood peaks. Homogeneity tests are used to assess the statistical robustness of the regions. The approach is based on the appropriate use of the index flood method (Dalrymple, 1960) in

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35

Maharjan, Prayag. "Texture and index properties of rocks from Malekhu-Thopal Khola area, Central Nepal Lesser Himalaya." Bulletin of the Department of Geology 18 (January 23, 2017): 1–14. http://dx.doi.org/10.3126/bdg.v18i0.16453.

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Infrastructures such as road, building, cannals, dam, bridges and so on lie on geological bases. Durability of the structures demands detail study of rocks in microscopic level. Such study helps to give knowledge about strength and physical properties of rocks, and their usefulness as construction materials. Index properties are the basic parameters to be found out before the developent of engineering structures, and are governed by the texture of the rock such as grain interlocking, crystallinity, shape factor, grain size homogeneity, grain orientation, micro fractures, etc.Textural study of

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36

Wang, Yumei, Xiaochuan Zhao, Shunjiang Xu, et al. "Using Regional Homogeneity to Reveal Altered Spontaneous Activity in Patients with Mild Cognitive Impairment." BioMed Research International 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/807093.

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Most patients with mild cognitive impairment (MCI) are thought to be in an early stage of Alzheimer’s disease (AD). Resting-state functional magnetic resonance imaging reflects spontaneous brain activity and/or the endogenous/background neurophysiological process of the human brain. Regional homogeneity (ReHo) rapidly maps regional brain activity across the whole brain. In the present study, we used the ReHo index to explore whole brain spontaneous activity pattern in MCI. Our results showed that MCI subjects displayed an increased ReHo index in the paracentral lobe, precuneus, and postcentral

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37

Zhang Jianfeng, 张建锋, 曹学东 Cao Xuedong, 吴时彬 Wu Shibin, 景洪伟 Jing Hongwei, and 阴旭 Yin Xu. "Temperature Effect on High Precision Measurement of Refractive Index Homogeneity of Optical Glass." Laser & Optoelectronics Progress 49, no. 1 (2012): 011203. http://dx.doi.org/10.3788/lop49.011203.

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38

Wu, Andrew, K. Ulin, and E. S. Sternick. "A dose homogeneity index for evaluating 1 9 2 Ir interstitial breast implants." Medical Physics 15, no. 1 (1988): 104–7. http://dx.doi.org/10.1118/1.596152.

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39

Yoon, Myonggeun, Sung Yong Park, Dongho Shin, et al. "A new homogeneity index based on statistical analysis of the dose-volume histogram." Journal of Applied Clinical Medical Physics 8, no. 2 (2007): 9–17. http://dx.doi.org/10.1120/jacmp.v8i2.2390.

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40

ABOY, M., J. FERNANDEZ, and R. HERMIDA. "A new vector index for statistical assessment of antihypertensive treatment duration and homogeneity." American Journal of Hypertension 18, no. 5 (2005): A24. http://dx.doi.org/10.1016/j.amjhyper.2005.03.061.

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41

Aboy, Mateo, Jos?? R. Fern??ndez, James McNames, and Ram??n C. Hermida. "The individual RDH index: a novel vector index for statistical assessment of antihypertensive treatment reduction, duration, and homogeneity." Blood Pressure Monitoring 11, no. 2 (2006): 69–78. http://dx.doi.org/10.1097/01.mbp.0000209070.07837.45.

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42

Uysal, Sengul, and Koksal Banoglu. "Hogging the middle lane: How student performance heterogeneity leads Turkish schools to fail in PISA?" Cypriot Journal of Educational Sciences 13, no. 2 (2018): 201–13. http://dx.doi.org/10.18844/cjes.v13i2.3196.

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This study aims to analyse the relationship between students’ mathematics achievement in Programme for International Student Assessment (PISA) 2012 and the instructional climate-related factors in the index of principals’ perceptions (learning hindrance, teacher morale and teacher intention). As preliminary analysis procedure, the chi-squared automatic interaction detection analysis was performed with relevant independent variables. Teacher’s achievement expectation from students and achievement-oriented behaviours were other significant predictive indicators on PISA mathematics achievement. B

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43

Narayanasamy, Ganesh, Sotirios Stathakis, Alonso N. Gutierrez, et al. "A Systematic Analysis of 2 Monoisocentric Techniques for the Treatment of Multiple Brain Metastases." Technology in Cancer Research & Treatment 16, no. 5 (2016): 639–44. http://dx.doi.org/10.1177/1533034616666998.

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Background: In this treatment planning study, we compare the plan quality and delivery parameters for the treatment of multiple brain metastases using 2 monoisocentric techniques: the Multiple Metastases Element from Brainlab and the RapidArc volumetric-modulated arc therapy from Varian Medical Systems. Methods: Eight patients who were treated in our institution for multiple metastases (3-7 lesions) were replanned with Multiple Metastases Element using noncoplanar dynamic conformal arcs. The same patients were replanned with the RapidArc technique in Eclipse using 4 noncoplanar arcs. Both tech

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Shiau, An-Cheng, Chen-Hsi Hsieh, Hui-Ju Tien, et al. "Left-Sided Whole Breast Irradiation with Hybrid-IMRT and Helical Tomotherapy Dosimetric Comparison." BioMed Research International 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/741326.

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Purpose. Limited-tomotherapy and hybrid-IMRT treatment techniques were compared for reductions in ipsilateral and contralateral lung, heart, and contralateral breast radiation doses.Methods and Materials.Thirty consecutively treated left-sided early-stage breast cancer patients were scheduled for lTomo and hIMRT. For the hIMRT plan conventional tangential-field and four-field IMRT plans were combined with different weightings in the prescribed dose. For the lTomo plan a geometrically limited arc was designed for the beamlet entrance. ADpof 50.4 Gy in 28 fractions was used for the PTV. The dose

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45

Al-Hadidy, Abdul-Rahim, Zeena Al-Kazzaz, and Ahmed Ali. "Deterministic Extensional Viscosity and Cracking Index of Polypropylene-Modified-Asphalt Binder." No.1 27, no. 1 (2020): 25–29. http://dx.doi.org/10.25130/tjes.27.1.04.

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The extensional viscosity and cracking prospectus of polypropylene modified asphalt cement (PPMAC) was explored. Forty/fifty penetration class asphalt cement with fivecontents of polypropylene polymer were chosen. Conventional traits such as: Standard penetration, standard softening point, ductility, utter viscosity, elasticity moduli, penetration prospectus, ageing, cracking prospectus, homogeneity, and extensional viscosity were performed on PPMAC. The PPMAC shows better viscosity, elasticity, enduringness and lower cracking properties at cold regions

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46

Obodovskyi, O., V. Grebin, S. Snizhko, I. Kuprikov, and O. Shevchenko Shevchenko. "THE RESULTS OF CHECKING OF METEOROLOGICAL OBSERVATIONS DOMINANT DATA IN THE CUTTING OF THE DISTRICT OF RIVER BASINS AND SUBBASEINS OF UKRAINE." Bulletin of Taras Shevchenko National University of Kyiv. Geography, no. 74 (2019): 9–13. http://dx.doi.org/10.17721/1728-2721.2019.74.2.

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This article presents the results of the verification of the homogeneity of the data of long-term observations on the average annual air temperature and annual precipitation amounts according to the data of 143 meteorological stations operating on the territory of Ukraine to date and have a long (in the vast majority of cases, more than 55-60 years) rows of observations within 14 areas of river basins and sub-basins that have been allocated within the country for research. To do this, the parametric criteria of Student and Fischer, as well as the non-parametric Wilcoxon criterion, were used. B

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47

Dinakaran, S., Sunil Verma, S. Jerome Das, G. Bhagavannarayana, S. Kar, and K. S. Bartwal. "Determination of crystalline perfection, optical indicatrix, birefringence and refractive-index homogeneity of ZTS crystals." Applied Physics B 103, no. 2 (2010): 345–49. http://dx.doi.org/10.1007/s00340-010-4256-7.

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48

Urasova, Anna, and Dmitri Balandin. "Assessment of the Homogeneity of Industrial Areas in the Region Using the Hoover Index." SHS Web of Conferences 93 (2021): 05001. http://dx.doi.org/10.1051/shsconf/20219305001.

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In modern science, particular importance is given to improving approaches to identifying homogeneous territories according to industry specifics, allowing to take into account the specifics and patterns of socio-economic processes of similar groups of regions with the adoption of appropriate practical decisions. In the development of the theoretical and methodological foundations of the theory of regional economics in economic research, the tasks of overcoming the socio-economic differentiation of territories, improving the quality of the population, assessing the influence of factors on the l

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49

Newman, R. H. "Homogeneity in cellulose crystallinity between samples of Pinus radiata wood." Holzforschung 58, no. 1 (2004): 91–96. http://dx.doi.org/10.1515/hf.2004.012.

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Abstract Wood was sampled from 22 locations in 3 Pinus radiata trees and characterized by solid-state 13C NMR spectroscopy. Values of a cellulose crystallinity index were confined to the range 0.486 to 0.541 despite inclusion of earlywood and latewood, compression wood and opposite wood, juvenile wood and mature wood. The mean value was 0.515 and the standard deviation was 0.015. Highest crystallinity was associated with relatively slow radial growth, with a correlation coefficient of R=−0.79 for a linear least-squares fit against ring width. The NMR results were consistent with published stud

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ALBANO, Filipe, Carla ten CATEN, and Michel ANZANELLO. "PRINCIPAL COMPONENT ANALYSIS FOR SELECTION OF VARIABLES IN HOMOGENEITY AND STABILITY TESTS APPLIED TO PROFICIENCY TESTING SCHEMES." Periódico Tchê Química 14, no. 27 (2017): 30–38. http://dx.doi.org/10.52571/ptq.v14.n27.2017.30_periodico27_pgs_30_38.pdf.

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Abstract:

Proficiency Tests (PT) based on interlaboratory comparisons are activities aimed at assessing the technical competence of laboratories in carrying out specific measurements. The analyses of homogeneity and stability of prepared samples are an important step in ensuring the reliability of the comparison rounds, since improper selection of the parameter to carry out this evaluation can influence the promoted comparison. This paper proposes a method for selecting the most relevant variables aimed at improving homogeneity and stability tests in PT. For that matter, the approach relies on a variabl

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