Relevant bibliographies by topics / Cardioids

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Cardioids'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Cardioids"

1

Stoyanov, Todor Stoyanov. "Some Localization of the Zeros of the Third Derivatives of a Complex Polynomial the Disks or Generalized Cardioid Interioriors." European Journal of Pure and Applied Mathematics 13, no. 3 (2020): 663–73. http://dx.doi.org/10.29020/nybg.ejpam.v13i3.3736.

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In this paper, we localize the zeros of the third derivatives of a complex polynomial in some sets. These sets are relevant to the first, second and third derivative of the polynomial, and they are respectively disks and cardioid interiors or generalized cardioid interiors. Here, for the first time we consider generalized cardioids, as the areas of zeros.
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BLANCHARD, PAUL, FİGEN ÇİLİNGİR, DANIEL CUZZOCREO, ROBERT L. DEVANEY, DANIEL M. LOOK, and ELIZABETH D. RUSSELL. "CHECKERBOARD JULIA SETS FOR RATIONAL MAPS." International Journal of Bifurcation and Chaos 23, no. 02 (2013): 1330004. http://dx.doi.org/10.1142/s0218127413300048.

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In this paper, we consider the family of rational maps [Formula: see text] where n ≥ 2, d ≥ 1, and λ ∈ ℂ. We consider the case where λ lies in the main cardioid of one of the n - 1 principal Mandelbrot sets in these families. We show that the Julia sets of these maps are always homeomorphic. However, two such maps Fλ and Fμ are conjugate on these Julia sets only if the parameters at the centers of the given cardioids satisfy μ = νj(d+1)λ or [Formula: see text] where j ∈ ℤ and ν is an (n - 1)th root of unity. We define a dynamical invariant, which we call the minimal rotation number. It determi
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Hebb, R. I., Janice M. Dulieu-Barton, Keith Worden, and P. Tatum. "Towards the Derivation of Stress Intensity Factors by Parametric Modelling of Full-Field Thermoelastic Data." Applied Mechanics and Materials 24-25 (June 2010): 227–32. http://dx.doi.org/10.4028/www.scientific.net/amm.24-25.227.

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Thermoelastic Stress Analysis (TSA) is a well-established full-field technique for experimental stress analysis that has proved to be extremely effective for studying stress fields in the vicinity of cracks. Recently, work has focused on the observation that the stress-sum contours (isopachics) obtained from TSA take the form of a cardioid. Genetic Algorithms (GAs) and Differential Evolution (DE) have proved successful for accurate parameter estimation of the cardioids, thus allowing the SIFs to be calculated. Originally, some curve-fits indicated that a pure cardioid form is inappropriate for
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Silvester, John R. "On cardioids and Morley's theorem." Mathematical Gazette 105, no. 562 (2021): 40–51. http://dx.doi.org/10.1017/mag.2021.6.

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Morley’s trisector theorem says that the three intersections of the trisectors of the angles of a triangle, lying near the three sides respectively, form an equilateral triangle. See Figure 1. Morley discovered his theorem in 1899, and news of it quickly spread. Over the years many proofs have been published, by trigonometry or by geometry, but a simple angle-chasing argument is elusive. See [1] for a list up to 1978. Perhaps the easiest proof is that of John Conway [2], who assembles a triangle similar to the given triangle by starting with an equilateral triangle and surrounding it by triang
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Lee, Sang, Hyo Kwak, Gi Han, and Chul Kim. "Design of Gerotor Oil Pump with 2-Expanded Cardioids Lobe Shape for Noise Reduction." Energies 12, no. 6 (2019): 1126. http://dx.doi.org/10.3390/en12061126.

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Gerotor pump technology is being increasingly employed in innovative application fields, such as engines and as the hydraulic source of automatic transmissions. The most important issues in the automobile industry in recent years are improvement of fuel efficiency and noise reduction, so the existing studies relating to design of the gerotor profiles and the port in gerotor oil pumps have been conducted to ensure high flow rates and low irregularity. This study proposes a new gerotor lobe shape with 2-expanded cardioids to reduce the noise of the oil pump used in the automatic transmissions of
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Guéguen, Nicolas, Céline Jacob, and Virginie Charles-Sire. "Helping with All Your Heart: The Effect of Cardioids Cue on Compliance to a Request for Humanitarian Aid." Social Marketing Quarterly 17, no. 4 (2011): 2–11. http://dx.doi.org/10.1080/15245004.2011.620683.

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Some studies have shown that figurative cues, presented in the immediate environment of an individual, can affect his or her later behavior. This effect was applied in a fundraising context. In 12 bakeries, a pink opaque donation box was placed near the cash register with a message soliciting donations for a humanitarian project. The moneybox had a cardioids (heart-like) shape, a round shape, or a square shape. Results showed that more donations were found with the moneybox with the cardioids shape. The spreading activation theory is used to explain these results.
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Orlova, Valeria V., and Christine L. Mummery. "Heart defects recapitulated in human cardioids." Cell Research 31, no. 9 (2021): 947–48. http://dx.doi.org/10.1038/s41422-021-00534-5.

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Holland, Finbarr, and Roger Smyth. "Cardioids and Self-inversive Cubic Polynomials." American Mathematical Monthly 126, no. 4 (2019): 319–29. http://dx.doi.org/10.1080/00029890.2019.1568151.

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Dzhenzher, V. O., and L. V. Denisova. "MATHEMATICAL ANIMATION IN COMPUTER SIMULATION AT SCHOOL." Informatics in school, no. 6 (September 17, 2019): 51–54. http://dx.doi.org/10.32517/2221-1993-2019-18-6-51-54.

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G�de, Lars, Jens Gravesen, and Steen Markvorsen. "A characterization of spheres, circles and cardioids." Archiv der Mathematik 60, no. 6 (1993): 579–90. http://dx.doi.org/10.1007/bf01236085.

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Dissertations / Theses on the topic "Cardioids"

1

Goldie, Robert George. "Comparison of Hilbert Transform and Derivative Methods for Converting ECG Data into Cardioid Plots to Detect Heart Abnormalities." DigitalCommons@CalPoly, 2021. https://digitalcommons.calpoly.edu/theses/2309.

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Electrocardiogram (ECG) time-domain signals contain important information about the heart. Several techniques have been proposed for creating a two-dimensional visualization of an ECG, called a Cardioid, that can be used to detect heart abnormalities with computer algorithms. The derivative method is the prevailing technique, which is popular for its low complexity, but it can introduce distortion into the Cardioid plot without additional signal processing. The Hilbert transform is an alternative method which has unity gain and phase shifts the ECG signal by 90 degrees to create the Cardioid p
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Narea, Matamala Juan Rodrigo. "Expansión del uso de desfibriladores externos automáticos en Chile, mediante la creación de la empresa Cardiovida S.A." Tesis, Universidad de Chile, 2012. http://www.repositorio.uchile.cl/handle/2250/111957.

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Magíster en Gestión para la Globalización<br>La Salud en cualquier país es un asunto de gran preocupación tanto a nivel de la población como de gobierno, sin importar el grado de desarrollo que posea el territorio. En Chile una de las principales causas de muerte es la asociada a enfermedades cardiovasculares con un 28,2% según MINSAL, dentro de las cuales se encuentra el Infarto Agudo al Miocardio. Es por este motivo que se generó la inquietud de intervenir en este tema realizando esta tesis; el objetivo de esto fue realizar el análisis estratégico y económico del proyecto Expansión del uso
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Рилова, А. К., та А. С. Кулак. "Плоскі алгебраїчні криві в науці та природі". Thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/66842.

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Алгебраїчні криві – це найпростіші об’єкти евклідової геометрії, які визначаються як множина нулів многочлена від двох змінних. До плоских алгебраїчних кривих відносять спіраль Архімеда, лемніскату Бернуллі, клотоїду, кардіоїду та ін.
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Tsai, C.-J., and 蔡嘉仁. "Locally Optimal Tests in Cardioid Distribution." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/55528025062943018021.

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碩士<br>國立中興大學<br>應用數學系<br>87<br>We are adopting the concept of Locally Most Powerful test and Locally Most Powerful Invariate test to derive optimal tests with respect to one-sided for one unknown parameter and two-sided for two unknown parameters problems,respectively. In this thesis, the problem under discussion is that whether a circular random sample is from the uniform distribution or from Cardioid distribution. After these two respective optimal tests have been developed, some optimal properties pertaining to
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Liu, De-Bin, and 劉得彬. "A Characteristic Study on Cardioid Type Gerotor Pump." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/36815696429353601472.

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碩士<br>國立聯合大學<br>機械工程學系碩士班<br>104<br>The tooth profile mathematical model of an outer rotor is derived by means of tooth geometry relation of an outer rotor with cardioid’s equation. Meanwhile, the tool profile mathematical model of a shaper cutter is expressed with that of an outer rotor. Based on theory of gearing, the mathematical model of an inner rotor is derived based on the manufacturing mechanism of a shaper cutter and an inner rotor. Undercutting may appear on tooth profiles of an inner rotor. Tooth undercutting of an inner rotor is derived by applying undercutting conditions developed
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TOMANDLOVÁ, Lucie. "Vlastnosti vybraných rovinných křivek." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-189346.

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The thesis is focused on the properties of the selected plane curves of order higher than two and one transcendent curve. To each curve an overview of its properties which are then derived and described in detail is given. All curves are enriched with their images that are created in mathematical software GeoGebra. In addition, to these images the text links directly to GeoGebra are added, where some interesting features are described and demonstrated.
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Javorská, Zdeňka. "Kinematická geometrie v rovině." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-352607.

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Diploma thesis is divided into three chapters. In first chapter are explained elementary ideas of kinematic geometry in the plane included not just images but also dynamic files made in software GeoGebra. Second chapter is about specific motions in the plane. It describes construstion of the curves in synthetic and analytic way. Every motion has its own file with animation of that motion. Last chapter devoted to history of some curves and also to aplication of kinematic geometry in real life. This thesis is useful for university students of descriptive geometry, but it also may help as motivat
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Books on the topic "Cardioids"

1

Bors, Mátyás. Cardioïde. Independently Published, 2018.

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Willerson. Cardiovas Lib Core Serv Netwrk. W B Saunders Co, 1995.

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SCRIABINE. New Cardiovas Drug (New Cardiovascular Drugs, Vol 3). Lippincott Williams & Wilkins, 1985.

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BAKER, Nancy. Exercises for Pregnant Women: Simple, Safe and Easy Exercises, Cardios and Workouts for Pregnant Women. Independently Published, 2022.

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Archibald, Raymond Clare 1875-1955. Cardioide and Some of Its Related Curves [microform]: Inaugural Dissertation der Mathematischen und Naturwissenschaftliichen Facultät der Kaiser-Wilhelms-Universität, Strassburg Zur Erlangung der Doctorwürde. Creative Media Partners, LLC, 2021.

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Book chapters on the topic "Cardioids"

1

Körei, Attila, and Szilvia Szilágyi. "How to Draw Cardioids with LEGO Robots: A Technical-Mathematical Project in Higher Education." In Robotics in Education. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-38454-7_4.

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Ong, Seng-Huat, and Ashis SenGupta. "Bivariate Cardioid Distributions." In Forum for Interdisciplinary Mathematics. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1044-9_13.

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Eargle, John M. "Back-to-Back Cardioid Components of the First-Order Cardioid Family." In Electroacoustical Reference Data. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2027-6_80.

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Kent, John T., Kanti V. Mardia, Luigi Ippoliti, and Pasquale Valentini. "A Statistical Analysis of the Cardioid Radial Growth Model." In Methodology and Applications of Statistics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83670-2_16.

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Eargle, John M. "Omni- and Bidirectional Components of the First-Order Cardioid Family." In Electroacoustical Reference Data. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2027-6_79.

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Eargle, John M. "On-Axis Proximity Effect in a Cardioid Microphone at Several Distances." In Electroacoustical Reference Data. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2027-6_87.

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Eargle, John M. "Proximity Effect in a Cardioid Microphone as a Function of Azimuth Angle." In Electroacoustical Reference Data. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2027-6_88.

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Shimizu, Kunio, and Tomoaki Imoto. "A Circular Distribution Constructed from the Product of Cardioid-Type Densities with (Hyper-) Toroidal Extension." In Forum for Interdisciplinary Mathematics. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1044-9_11.

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Gómez, M., H. Garrido, J. A. Rodríguez, and O. Fabelo. "Diseño de los Componentes Mecánicos del Registrador para los Electrocardiógrafos CARDIOCID T50 Y S100." In V Latin American Congress on Biomedical Engineering CLAIB 2011 May 16-21, 2011, Habana, Cuba. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-21198-0_196.

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Pardo-Vicente, Miguel-Angel, Sergio de la Rosa, Lucía Rodríguez-Parada, and Carlos Filippini Franco. "Conceptual Design of a Cardioid Condenser Microphone Housing for Professional Producers in the Music Industry Using Kansei Engineering." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-72829-7_3.

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Conference papers on the topic "Cardioids"

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Kosak, Roman E., and Armen V. Gevorkyan. "Compact Ultra-Wideband Cardioid-Shaped Vivaldi Radiator with H-Shaped Impedance Inserts in the Aperture." In 2024 IEEE 9th All-Russian Microwave Conference (RMC). IEEE, 2024. https://doi.org/10.1109/rmc62880.2024.10846865.

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McConnell, James, Scott Jensen, and Jason Rudzinsky. "Forming First-and Second-Order Cardioids with Multimode Hydrophones." In OCEANS 2006. IEEE, 2006. http://dx.doi.org/10.1109/oceans.2006.306982.

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KEMPE, U. "ABOUT THE BENEFITS OF MULTIPLE LOW FREQUENCY CARDIOIDS IN SMALL ROOMS." In Reproduced Sound 2005. Institute of Acoustics, 2023. http://dx.doi.org/10.25144/17945.

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Coleman, B. "Cardioid microphones and DUET." In Irish Signals and Systems Conference 2004. IEE, 2004. http://dx.doi.org/10.1049/cp:20040552.

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Kosak, Roman E., and Armen V. Gevorkyan. "UWB Cardioid-Shaped Vivaldi Antenna." In 2023 Radiation and Scattering of Electromagnetic Waves (RSEMW). IEEE, 2023. http://dx.doi.org/10.1109/rsemw58451.2023.10202121.

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Han, Jiguang, and Haotong Han. "Cardioid crank Mechanism and its Application." In 2021 4th World Conference on Mechanical Engineering and Intelligent Manufacturing (WCMEIM). IEEE, 2021. http://dx.doi.org/10.1109/wcmeim54377.2021.00122.

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del-Val, Lara, Alberto Izquierdo, Juan J. Villacorta, Maria I. Jimenez, and Mariano Raboso. "Sidelobe Evaluation of Cardioid-Patterned Sensor Array." In 2008 38th European Microwave Conference (EuMC). IEEE, 2008. http://dx.doi.org/10.1109/eumc.2008.4751636.

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Prince, S. M., and W. G. McGuigan. "Alignment and tolerancing of a cardioid condenser." In Optical Engineering + Applications, edited by José M. Sasian and Mitchell C. Ruda. SPIE, 2007. http://dx.doi.org/10.1117/12.740868.

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Elko, Gary W., and Jens Meyer. "A simple adaptive cardioid direction finding algorithm." In 2013 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA). IEEE, 2013. http://dx.doi.org/10.1109/waspaa.2013.6701831.

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STUPFEL, B., C. GRANGER, and JN DECARPIGNY. "MODELLING OF A PRESSURE GRADIENT CARDIOID HYDROPHONE." In Sonar Transducers: Past, Present and Future 1987. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/21920.

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