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Journal articles on the topic 'Abacuses'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Iordache, Vlad, and Mihai Vlad Ionita. "Urban sound energy reduction by means of sound barriers." E3S Web of Conferences 32 (2018): 01024. http://dx.doi.org/10.1051/e3sconf/20183201024.

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In urban environment, various heating ventilation and air conditioning appliances designed to maintain indoor comfort become urban acoustic pollution vectors due to the sound energy produced by these equipment. The acoustic barriers are the recommended method for the sound energy reduction in urban environment. The current sizing method of these acoustic barriers is too difficult and it is not practical for any 3D location of the noisy equipment and reception point. In this study we will develop based on the same method a new simplified tool for acoustic barriers sizing, maintaining the same p

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2

Alhama, Iván, Gonzalo García-Ros, and Matteo Icardi. "Non-Stationary Contaminant Plumes in the Advective-Diffusive Regime." Mathematics 9, no. 7 (2021): 725. http://dx.doi.org/10.3390/math9070725.

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Porous media with low/moderate regional velocities can exhibit a complex dynamic of contamination plumes, in which advection and molecular diffusion are comparable. In this work, we present a two-dimensional scenario with a constant concentration source and impermeable upper and lower boundaries. In order to characterise the plume patterns, a detailed discriminated dimensionless technique is used to obtain the dimensionless groups that govern the problem: an aspect ratio of the domain including characteristic lengths, and two others relating time and the horizontal length of the spread of cont

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Hu, Yu Tao, Fang Yun Lu, Bang Hai Jiang, and Duo Zhang. "Empirical Approaches to Calculate External Blast Load on Structures." Applied Mechanics and Materials 275-277 (January 2013): 761–66. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.761.

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Modeling structures response to external blast loads is studied in this paper. A new model is developed based on the experimental data in literature UFC (unified facilities criteria) 3-340-2. The new model differs from the model which is available in LS-DYNA as take into account new abacuses for reflecting coefficients, leading to more precise load especially at great incidence.

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Peyre, Hervé, J. W. Sun, Jude Guelfucci, et al. "Low Temperature Photoluminescence Investigation of 3-Inch SiC Wafers for Power Device Applications." Materials Science Forum 711 (January 2012): 164–68. http://dx.doi.org/10.4028/www.scientific.net/msf.711.164.

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Focusing on the change in aluminium-related photoluminescence lines in 4H-SiC versus doping concentration, we have used a combination of LTPL (Low Temperature PhotoLuminescence) and secondary ion mass spectrometry measurements to set new calibration curves. In this way, one can probe the change in aluminum concentration in the range 1017to 1019cm-3. When applied to LTPL maps collected on full 3-inch wafers, we show that such abacuses constitute a powerful tool to control efficiently the doping level of as-grown p+(emitters) and p++(contact) layers for power device applications.

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Grivel, Eric, Bastien Berthelot, Pierrick Legrand, and Audrey Giremus. "DFA-based abacuses providing the Hurst exponent estimate for short-memory processes." Digital Signal Processing 116 (September 2021): 103102. http://dx.doi.org/10.1016/j.dsp.2021.103102.

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6

Xiong, Peng, Xiuhong Hu, Bin Huang, Jiahai Zhang, Quan Chen, and Haiyan Liu. "Increasing the efficiency and accuracy of the ABACUS protein sequence design method." Bioinformatics 36, no. 1 (2019): 136–44. http://dx.doi.org/10.1093/bioinformatics/btz515.

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Abstract Motivation The ABACUS (a backbone-based amino acid usage survey) method uses unique statistical energy functions to carry out protein sequence design. Although some of its results have been experimentally verified, its accuracy remains improvable because several important components of the method have not been specifically optimized for sequence design or in contexts of other parts of the method. The computational efficiency also needs to be improved to support interactive online applications or the consideration of a large number of alternative backbone structures. Results We derived

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PIERALISI, R., and R. D. MACHADO. "Influence of standard recommendations for the calculation of the column-base connection by socket according to ABNT NBR 9062:2006." Revista IBRACON de Estruturas e Materiais 10, no. 1 (2017): 244–59. http://dx.doi.org/10.1590/s1983-41952017000100011.

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Abstract This work studies the column-base connection by external socket in precast structures. A parametric study of the geometric characteristics of the external socket base with smooth interface is presented. In this parametric study, the consumption of concrete and steel are analyzed. The column cross section, the embedded length of the column in the socket base and the thickness of the wall of the socket base were the variables considered in this study. It was observed that with the increase of the embedded length, the minimum cross section of the main horizontal reinforcement reduces. Wi

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Samson, Gabriel, Fabrice Deby, Jean-Luc Garciaz, and Jean-Louis Perrin. "Monitoring DIAMOND device for corrosion state evaluation of reinforced concrete structures." MATEC Web of Conferences 199 (2018): 04007. http://dx.doi.org/10.1051/matecconf/201819904007.

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The corrosion of steel rebars is a major issue with respect to the durability of reinforced concrete structure. Several corrosion evaluation methods exist: half-cell potential, concrete resistivity or linear polarization resistance (LPR) measurement. However, these techniques are employed at a given moment and are not suitable for continuous corrosion evaluation. This works belongs to the DIAMOND project which aims to produce a new corrosion state measurement monitoring device. The monitoring probe consists on a cylindrical probe. A ring shape counter-electrode CE is plated on the probe side.

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9

Lallam, Faiza, Abdesselam Megnounif, and Abderrahman Nekkache Ghenim. "Estimating the runoff coefficient using the analytic hierarchy process." Journal of Water and Land Development 38, no. 1 (2018): 67–74. http://dx.doi.org/10.2478/jwld-2018-0043.

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AbstractThe runoff coefficient (RC) is a parameter that is very often used in surface hydrology in order to characterize the drainage capacity of a watershed. The traditional estimate of this coefficient is often made from abacuses based on 2 or 3 parameters to the maximum. In this work, three numerical models are presented. Two models are based on experimental work. The first one is based on three criteria, namely the vegetation cover, the type of soil, and the slope. The second one considers the size of the watershed, the maximum daily rainfall and the type of soil. In practice, it is not ea

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10

Ozcelik, Y., and İ. C. Engin. "Development of Cuttability Abacuses in Abrasive Waterjet Cutting With Regard to Depth of Cut and Roughness of Cut Surfaces." Journal of Testing and Evaluation 45, no. 5 (2016): 20160366. http://dx.doi.org/10.1520/jte20160366.

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11

Ribeiro, Paulo Marcelo Vieira, and Lineu José Pedroso. "Solution of the Dynamic Interaction Problem between a Framed Structure and an Acoustic Cavity Using Imposed Deformation Functions at the Interface." Mathematical Problems in Engineering 2010 (2010): 1–33. http://dx.doi.org/10.1155/2010/907232.

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This article presents an analytical procedure for solution of the dynamic interaction problem of a vibrating framed structure connected to a bidimensional cavity, containing an acoustic fluid. Initially the pressure solution for the fluid domain is developed, using the separation of variables technique. In a next step, this solution is applied to an entirely open cavity and to a closed cavity in the transversal direction, both containing a vibrating boundary with an arbitrary deformation. The generalized parameters of the structure (mass, rigidity, and force) are obtained by means of the virtu

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12

Garrison, Lehman H., Daniel J. Eisenstein, and Philip A. Pinto. "A high-fidelity realization of the Euclid code comparison N-body simulation with Abacus." Monthly Notices of the Royal Astronomical Society 485, no. 3 (2019): 3370–77. http://dx.doi.org/10.1093/mnras/stz634.

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Abstract We present a high-fidelity realization of the cosmological N-body simulation from the Schneider et al. code comparison project. The simulation was performed with our AbacusN-body code, which offers high-force accuracy, high performance, and minimal particle integration errors. The simulation consists of 20483 particles in a $500\ h^{-1}\, \mathrm{Mpc}$ box for a particle mass of $1.2\times 10^9\ h^{-1}\, \mathrm{M}_\odot$ with $10\ h^{-1}\, \mathrm{kpc}$ spline softening. Abacus executed 1052 global time-steps to z = 0 in 107 h on one dual-Xeon, dual-GPU node, for a mean rate of 23 mi

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13

Melo, Helena de Fátima Sousa, and Maria do Carmo Carvalho Sousa da Cunha Martins. "Estratégias e Metodologias para o Ensino-Aprendizagem da Operação Aritmética da Multiplicação utilizando Tópicos da História da Matemática." História da Ciência e Ensino: construindo interfaces 20 (December 29, 2019): 381–94. http://dx.doi.org/10.23925/2178-2911.2019v20espp381-394.

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Resumo As dificuldades no ensino-aprendizagem das operações aritméticas podem interferir na aquisição de algumas competências matemáticas básicas e, de certo modo, influenciar futuros processos de cálculo. Uma abordagem diferente, como a utilização de tópicos de História da Matemática, pode revelar-se uma boa estratégia para motivar os alunos e encaminhá-los para um conhecimento eficaz das referidas operações. Muitos foram os povos que aplicaram técnicas, processos, métodos e algoritmos na resolução de problemas do quotidiano ao longo da história. A Matemática de então

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14

Hatta, Takeshi, and Mayumi Miyazaki. "Visual Imagery Processing in Japanese Abacus Experts." Imagination, Cognition and Personality 9, no. 2 (1989): 91–102. http://dx.doi.org/10.2190/43ju-8cbu-1lty-ry6w.

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Two experiments were conducted to examine the ability of visual imagery processing in abacus experts. Abacus experts and normal control subjects (university students) with no abacus training were given word and picture matching tasks for Experiment 1, and digit sequence and abacus-picture matching tasks for Experiment 2. The pictures, comparison stimuli, were tachistoscopically presented in either the left or the right visual field. The results indicated that: 1) the abacus experts performed matching tasks under all conditions of both experiments faster than the control group; 2) the abacus ex

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15

Robinson, Ellen, Xiaowen Cui, Nama Namakshi, Hiroko K. Warshauer, Sonalee Bhattacharyya, and Christina Koehne. "Abacus Interactive." Mathematics Teaching in the Middle School 23, no. 5 (2018): 288–97. http://dx.doi.org/10.5951/mathteacmiddscho.23.5.0288.

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Calculators are often efficient in finding the answer to an addition or subtraction problem, but they do not reveal the process by which the answer is obtained. Developing students' fluency in addition and subtraction using strategies and algorithms based on place value, composing and decomposing numbers in base 10, and reading and writing numerals in expanded form are important teaching and learning standards not only for the elementary grades but for middle school students as well (NCTM 2000; CCSSI 2010; TEA 2015). We introduced the Chinese abacus to our students as a hands-on tool to illumi

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16

Cheon, Taksu, Izumi Tsutsui, and Tamás Fülöp. "Quantum abacus." Physics Letters A 330, no. 5 (2004): 338–42. http://dx.doi.org/10.1016/j.physleta.2004.08.011.

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17

Du, Fenglei, Feiyan Chen, Yongxin Li, Yuzheng Hu, Mei Tian, and Hong Zhang. "Abacus Training Modulates the Neural Correlates of Exact and Approximate Calculations in Chinese Children: An fMRI Study." BioMed Research International 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/694075.

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Exact (EX) and approximate (AP) calculations rely on distinct neural circuits. However, the training effect on the neural correlates of EX and AP calculations is largely unknown, especially for the AP calculation. Abacus-based mental calculation (AMC) is a particular arithmetic skill that can be acquired by long-term abacus training. The present study investigated whether and how the abacus training modulates the neural correlates of EX and AP calculations by functional magnetic resonance imaging (fMRI). Neural activations were measured in 20 abacus-trained and 19 nontrained Chinese children d

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18

Tiwari, Mr Yogesh K., and Dr Pavitra D. Patil. "Impact Analysis on Skill Development with Abacus Users." International Journal of Trend in Scientific Research and Development Volume-1, Issue-5 (2017): 955–59. http://dx.doi.org/10.31142/ijtsrd2386.

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19

Kreul, Lars U., Gregor Fernholz, Andrzej Górak, and Sebastian Engell. "Erfahrungen mit den dynamischen Simulatoren DIVA, gPROMSund ABACUSS." Chemie Ingenieur Technik 69, no. 5 (1997): 650–53. http://dx.doi.org/10.1002/cite.330690508.

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20

Malhas, Othman Qasim. "Abacus logic: The lattice of quantum propositions as the poset of a theory." Journal of Symbolic Logic 59, no. 2 (1994): 501–15. http://dx.doi.org/10.2307/2275403.

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AbstractWith a certain graphic interpretation in mind, we say that a function whose value at every point in its domain is a nonempty set of real numbers is an Abacus. It is shown that to every collection C of abaci there corresponds a logic, called an abacus logic, i.e.. a certain set of propositions partially ordered by generalized implication. It is also shown that to every collection C of abaci there corresponds a theory Jc in a classical propositional calculus such that the abacus logic determined by C is isomorphic to the poset of Jc. Two examples are given. In both examples abacus logic

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21

Veena, C. N., Rashmitha Vinayak Kamath, and M. Prashanth Kumar. "Effect of abacus training on critical flicker fusion frequency threshold among primary schoolchildren." Indian Journal of Physiology and Pharmacology 65 (August 10, 2021): 115–18. http://dx.doi.org/10.25259/ijpp_410_2020.

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Objectives: The concept of neuronal plasticity has been considerably studied to know how long-lasting changes are associated with brain’s capacity to be shaped or sculptured by experience. Potential cognitive benefits of abacus training have been proved by various studies indicating it to be a promising tool in improving cognitive abilities including arithmetic abilities, visuospatial and working memory. Critical flicker fusion happens when the individual can no longer differentiate between changing visual stimuli. It can be modulated by behavioural or psychophysical techniques. The objectives

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22

Rowland, Ingrid D. "Abacus and Humanism*." Renaissance Quarterly 48, no. 4 (1995): 695–727. http://dx.doi.org/10.2307/2863421.

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Renaissance humanism was not, and probably could never have been, permanently confined to the restricted company that had once created it. Even its most esoteric branches — Neoplatonism, magic, cabala, alchemy—had their practical side, for they had been conceived and continued to operate in a world of practical needs. By the first two decades of the early sixteenth century, fundamental concepts of Neoplatonism, though they may have retained their esoteric charm for self-conscious cognoscenti, had also become common coin, the imagery in which merchants, professionals, and technicians couched th

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23

Ferrante, Olivia. "Teaching the Abacus." Journal of Visual Impairment & Blindness 79, no. 7 (1985): 322. http://dx.doi.org/10.1177/0145482x8507900711.

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24

Gorman, Sean, Dean Lusher, and Keir Reeves. "Abacus Football Club." Sport in Society 19, no. 4 (2016): 538–48. http://dx.doi.org/10.1080/17430437.2014.1002975.

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Walker, Bruce N., Jeffrey Lindsay, and Justin Godfrey. "The audio abacus." ACM SIGACCESS Accessibility and Computing, no. 77-78 (September 2003): 9–15. http://dx.doi.org/10.1145/1029014.1028634.

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Li, Yongxin, Feiyan Chen, and Wenhua Huang. "Neural Plasticity following Abacus Training in Humans: A Review and Future Directions." Neural Plasticity 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/1213723.

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The human brain has an enormous capacity to adapt to a broad variety of environmental demands. Previous studies in the field of abacus training have shown that this training can induce specific changes in the brain. However, the neural mechanism underlying these changes remains elusive. Here, we reviewed the behavioral and imaging findings of comparisons between abacus experts and average control subjects and focused on changes in activation patterns and changes in brain structure. Finally, we noted the limitations and the future directions of this field. We concluded that although current stu

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Lima-Silva, Thais Bento, Maurício Einstoss de Castro Barbosa, Mariana Garcia Zumkeller, et al. "Cognitive training using the abacus: a literature review study on the benefits for different age groups." Dementia & Neuropsychologia 15, no. 2 (2021): 256–66. http://dx.doi.org/10.1590/1980-57642021dn15-020014.

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ABSTRACT. The literature indicates that cognitive stimulation interventions have shown promising results. Abacus represents a tool with great potential in such interventions. Objectives: To carry out a systematic review of studies published in recent years that entailed the delivery of a cognitive training program using an abacus to boost target cognitive abilities of older persons and also other age groups, with or without cognitive impairment. Methods: A systematic review study was conducted in July 2020 involving PubMed, MedLine, LILACS, and SciELO databases. Results: A total of 29 studies

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Rosenblum, L. Penny, Sunggye Hong, and Sheila Amato. "The Abacus: Teachers’ Preparation and Beliefs about their Abacus Preservice Preparation." Journal of Visual Impairment & Blindness 107, no. 4 (2013): 274–85. http://dx.doi.org/10.1177/0145482x1310700404.

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29

León, Samuel P., María del Carmen Carcelén Fraile, and Inmaculada García-Martínez. "Development of Cognitive Abilities through the Abacus in Primary Education Students: A Randomized Controlled Clinical Trial." Education Sciences 11, no. 2 (2021): 83. http://dx.doi.org/10.3390/educsci11020083.

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(1) Background: An abacus is an instrument used to perform different arithmetic operations. The objective was to analyze the benefits of mathematical calculations made with an abacus to improve the concentration, attention, memory, perceptive attitudes, and creativity cognitive abilities of primary school students. (2) Methods: A total of 65 children, aged 7–11 years (8.49 ± 1.65) participated in this randomized controlled clinical trial. The children were randomly distributed into a control group (n = 34) and experimental group (n = 31). The questionnaires used were the D2 test to measure att

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Popyack, Jeffrey L. "From abacus to zdravstvuyte." ACM Inroads 4, no. 4 (2013): 28–31. http://dx.doi.org/10.1145/2537753.2537765.

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31

Grosholz, Emily. "The Abacus of Years." Hudson Review 51, no. 1 (1998): 141. http://dx.doi.org/10.2307/3853130.

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32

Cooper, KV. "Triticosecale (triticale) cv. Abacus." Australian Journal of Experimental Agriculture 34, no. 6 (1994): 851. http://dx.doi.org/10.1071/ea9940851.

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Heald, Chris. "Working with an abacus." Practical Pre-School 2005, no. 49 (2005): 1. http://dx.doi.org/10.12968/prps.2005.1.49.39963.

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Reddington, Mark V., Alexandra M. Z. Slawin, Neil Spencer, J. Fraser Stoddart, Cristina Vicent, and David J. Williams. "Towards a molecular abacus." Journal of the Chemical Society, Chemical Communications, no. 9 (1991): 630. http://dx.doi.org/10.1039/c39910000630.

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35

Reeves, Roger. "from The Golden Abacus." Ploughshares 41, no. 1 (2015): 172–78. http://dx.doi.org/10.1353/plo.2015.0028.

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36

Malhas, Othman Qasim. "Fuzziness in abacus logic." International Journal of Theoretical Physics 32, no. 10 (1993): 1917–26. http://dx.doi.org/10.1007/bf00979513.

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37

Du, Fenglei, Yuan Yao, Qiong Zhang, and Feiyan Chen. "Long-Term Abacus Training Induces Automatic Processing of Abacus Numbers in Children." Perception 43, no. 7 (2014): 694–704. http://dx.doi.org/10.1068/p7625.

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Kesuma, Suryanata, Mahdiah Syumarliyanty, and Agus Rudi Hartono. "Evaluasi Analitik Hematology Analyzer Diatron Abacus 3 Pada Parameter Hematologi Rutin Di Laboratorium Hematologi Poltekkes Kemenkes Kalimantan Timur." JOURNAL OF MUHAMMADIYAH MEDICAL LABORATORY TECHNOLOGIST 4, no. 1 (2021): 1. http://dx.doi.org/10.30651/jmlt.v4i1.6467.

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Entering the era of globalization, manual tools in clinical laboratories have been replaced by full automatic devices. One of them is the Diatron Abacus Hematology analyzer 3. A relatively new hematology analyzer is required for analytical evaluation. Analytical evaluation is an evaluation of Diatron Abacus 3 on Sysmex KX 21 as a standard in RSUD I.A Moeis Samarinda, and it is very important to do this to assess the performance of the tool. Analytical evaluation is done by determining the value of accuracy, precision, and total error and linearity of measurement results from routine hematologi

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Cesar, Heldio X. Lenz. "Solutions graphiques dans la cartographie des phénomènes quantitatifs." Cahiers de géographie du Québec 4, no. 8 (2005): 303–21. http://dx.doi.org/10.7202/020221ar.

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The purpose of this paper is to present methods which will make easier the representation of quantitative phenomena in geographical cartography. The simultaneous use of certain combinations of the abacus presented here permits to eliminate completely long and fastidious calculations in the representation of quantities by figures and solids. The construction and the utilization of each abacus are successively explained.

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Naylor, Michael, and Pamela Naylor. "A Teacher's Journal: December 2001." Teaching Children Mathematics 8, no. 4 (2001): 202–5. http://dx.doi.org/10.5951/tcm.8.4.0202.

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The abacus has been used for centuries in Asia and is still an essential part of education and commerce in many Asian countries. Abacus is a Latin word that comes from the Greek abax, meaning “table,” and possibly from the Hebrew abaq, which means “dust.” Long ago, calculations were done by writing in sand or dust sprinkled on a table or by manipulating stones on a table. A counting stone was called a calculus, from which the word calculate originates. The abacus as we know it today—a frame with beads that slide on rods—is a Chinese invention that dates to at least the thirteenth century. The

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Jones, Stewart. "Abacus: The First 50 Years." Abacus 51, no. 4 (2015): 485–98. http://dx.doi.org/10.1111/abac.12056.

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Wells, Murray. "Founding Editor of Abacus Honoured." Abacus 28, no. 1 (1992): 1. http://dx.doi.org/10.1111/j.1467-6281.1992.tb00265.x.

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Dean, Graeme. "Editorial: Abacus Regains SSCI Recognition." Abacus 42, no. 2 (2006): i—ii. http://dx.doi.org/10.1111/j.1467-6281.2006.00193.x.

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Owens, H. D. "Computer memory: abacus to DRAM." IEEE Potentials 8, no. 4 (1989): 32–35. http://dx.doi.org/10.1109/45.43032.

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Venema, Liesbeth. "Quantum computation: The dreamweaver's abacus." Nature 452, no. 7189 (2008): 803–5. http://dx.doi.org/10.1038/452803a.

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46

Wildon, Mark. "Counting partitions on the abacus." Ramanujan Journal 17, no. 3 (2007): 355–67. http://dx.doi.org/10.1007/s11139-006-9013-5.

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47

Masnaghetti, Michele, and Luke Ditchburn. "Abacus Annual Trends Report 2015." Journal of Direct, Data and Digital Marketing Practice 17, no. 1 (2015): 36–42. http://dx.doi.org/10.1057/dddmp.2015.35.

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Wells, Murray. "Founding Abacus: Frustration to Fulfilment." Abacus 36, no. 3 (2000): 255–66. http://dx.doi.org/10.1111/1467-6281.00064.

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Wong, William Bruce, Arliene Ravelo, Marco DiBonaventura, and Bijal Shah-Manek. "Oncologists’ awareness, knowledge, and perceptions of value frameworks." Journal of Clinical Oncology 35, no. 15_suppl (2017): e18317-e18317. http://dx.doi.org/10.1200/jco.2017.35.15_suppl.e18317.

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e18317 Background: The increasing prevalence of cancer coupled with approvals of new drugs and technologies have brought increased scrutiny to cost/benefit of treatments in oncology. To address the rising concern about oncology drug costs, several stakeholders have developed frameworks to help assess the value of oncology regimens. The objective of this study was to assess oncologists’ perceptions, awareness and knowledge of all oncology value frameworks in the US. Methods: Data were collected from an electronic cross-sectional survey of 200 US-based oncologists recruited from an online panel.

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Mahmood, Ammar S., and Abdulrazzaq T. Al-Hussaini. "e-Abacus Diagram Rows Rearranging Technology." OALib 07, no. 06 (2020): 1–5. http://dx.doi.org/10.4236/oalib.1106407.

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