Relevant bibliographies by topics / Normal curves

Contents

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

Academic literature on the topic 'Normal curves'

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

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Journal articles on the topic "Normal curves"

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Haggui, Fathi, and Adel Khalfallah. "Normal pseudoholomorphic curves." Annales Polonici Mathematici 101, no. 1 (2011): 55–65. http://dx.doi.org/10.4064/ap101-1-6.

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KÖRPINAR, Talat, and Ahmet SAZAK. "E3'te Adjoint Eğriler ile İlişkili Normal Yüzeyler." Bitlis Eren Üniversitesi Fen Bilimleri Dergisi 11, no. 3 (2022): 779–83. http://dx.doi.org/10.17798/bitlisfen.1086972.

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In this study, we work on the surfaces determined in relation to associated curves. We study normal surfaces defined with the help of adjoint curves, a special type of associated curve. For this, we first remember the basic equations of the 3-dimensional Euclidean space, which is the space we work with, and the adjoint curve issue. Then, by computing the first and second fundamental forms, principal curvatures and Gaussian and mean curvatures of the normal surface of an adjoint curve, we obtain the characterizations of this surface and related some results.
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ECHABBI, Nidal, and Amina OUAZZANI CHAHDI. "Some Associated Curves of Normal Indicatrix of a Regular Curve." Journal of Mathematics Research 12, no. 1 (2020): 84. http://dx.doi.org/10.5539/jmr.v12n1p84.

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In this paper, we consider integral curves of a vector field generated by Frenet vectors of normal indicatrix of a given curve in Euclidean 3-space. We define some new associated curves such as evolute direction curves, Bertrand direction curves and Mannheim directon curves of the normal indicatrix of a regular curve, respectively. We also found the relationships between curvatures of these curves. By using these associated curves, we give a new approach to construct slant helices and C- slant helices. Finally, we present some examples.
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ECHABBI, Nidal, and Amina OUAZZANI CHAHDI. "Some Associated Curves of Normal Indicatrix of a Regular Curve." Journal of Mathematics Research 12, no. 1 (2020): 92. http://dx.doi.org/10.5539/jmr.v12n1p92.

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In this paper, we consider integral curves of a vector field generated by Frenet vectors of normal indicatrix of a given curve in Euclidean 3-space. We define some new associated curves such as evolute direction curves, Bertrand direction curves and Mannheim directon curves of the normal indicatrix of a regular curve, respectively. We also found the relationships between curvatures of these curves. By using these associated curves, we give a new approach to construct slant helices and C- slant helices. Finally, we present some examples.
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Çelik, Oğuzhan. "A Generalization of Curve Mates: Normal Mate of a Curve." Erzincan Üniversitesi Fen Bilimleri Enstitüsü Dergisi 17, no. 2 (2024): 338–52. http://dx.doi.org/10.18185/erzifbed.1396745.

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This a paper, a new curve pair is defined that generalizes some pairs of curves well known as Mannheim and Bertrand curve pairs. A normal curve pair is defined in such a way that a vector u obtained by overlapping the normal planes of the G and G* curves makes the same angle as the binormals of these curves. The relationship between torsions and curvatures of curve pairs was analyzed. Moreover, The unit quaternion q corresponding to the rotation matrix between the Frenet vectors of the curves was defined. In the conclusion, it is expressed express which famous pairs of curves will be obtained
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Fløystad, Gunnar. "Curves on normal surfaces." Transactions of the American Mathematical Society 352, no. 12 (2000): 5485–510. http://dx.doi.org/10.1090/s0002-9947-00-02054-7.

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Levcovitz, Daniel, and Timothy C. McCune. "Projectively normal involutive curves." Journal of Pure and Applied Algebra 174, no. 2 (2002): 153–62. http://dx.doi.org/10.1016/s0022-4049(02)00045-2.

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Alghanemi, Azeb, and Abeer AlGhawazi. "Some Geometric Characterizations of f -Curves Associated with a Plane Curve via Vector Fields." Advances in Mathematical Physics 2022 (April 27, 2022): 1–9. http://dx.doi.org/10.1155/2022/9881237.

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The differential geometry of plane curves has many applications in physics especially in mechanics. The curvature of a plane curve plays a role in the centripetal acceleration and the centripetal force of a particle traversing a curved path in a plane. In this paper, we introduce the concept of the f -curves associated with a plane curve which are more general than the well-known curves such as involute, evolute, parallel, symmetry set, and midlocus. In fact, we introduce the f -curves associated with a plane curve via its normal and tangent for both the cases, a Frenet curve and a Legendre cu
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Erdem, Hatice Altın, and Kazım İlarslan. "Spacelike Bertrand curves in Minkowski 3-space revisited." Analele Universitatii "Ovidius" Constanta - Seria Matematica 31, no. 3 (2023): 87–109. https://doi.org/10.2478/auom-2023-0033.

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Abstract In the geometry of curves in 𝔼3, if the principal normal vector field of a given space curve ϕ with non-zero curvatures is the principal normal vector field of another space curve ϕ *, then the curve ϕ is called a Bertrand curve and ϕ * is called Bertrand partner of ϕ. These curves have been studied in di erent space over a long period of time and found wide application in di erent areas. Therefore, we have a great knowledge of geometric properties of these curves. In this paper, revested results for spacelike Bertrand curves with non-null normal vectors will be given with the previou
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Ballico, E., and A. Cossidente. "Osculating subspaces, normal rational curves and generalized strange curves." Bulletin of the Belgian Mathematical Society - Simon Stevin 8, no. 1 (2001): 87–94. http://dx.doi.org/10.36045/bbms/1102714031.

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Dissertations / Theses on the topic "Normal curves"

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Mus, Koksal. "An Alternative Normal Form For Elliptic Curve Cryptography: Edwards Curves." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611065/index.pdf.

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A new normal form x2 + y2 = c2(1 + x2y2) of elliptic curves was introduced by M. Harold Edwards in 2007 over the field k having characteristic different than 2. This new form has very special and important properties such that addition operation is strongly unified and complete for properly chosen parameter c . In other words, doubling can be done by using the addition formula and any two points on the curve can be added by the addition formula without exception. D. Bernstein and T. Lange added one more parameter d to the normal form to cover a large class of elliptic curves, x2 + y2 = c2(1 +
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Kliethermes, Stephanie Ann. "A Bayesian nonparametric approach to modeling longitudinal growth curves with non-normal outcomes." Diss., University of Iowa, 2013. https://ir.uiowa.edu/etd/2546.

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Longitudinal growth patterns are routinely seen in medical studies where developments of individuals on one or more outcome variables are followed over a period of time. Many current methods for modeling growth presuppose a parametric relationship between the outcome and time (e.g., linear, quadratic); however, these relationships may not accurately capture growth over time. Functional mixed effects (FME) models provide flexibility in handling longitudinal data with nonparametric temporal trends because they allow the data to determine the shape of the curve. Although FME methods are well-deve
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Siesquén, Nancy Carolina Chachapoyas. "Singularidades simples de curvas determinantais." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/55/55135/tde-22092010-161843/.

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Neste trabalho, estudamos a classificação de singularidades de curvas espaciais simples que não são intersecções completas. O Teorema de Hilbert-Burch nos permite usar a matriz de representação para estudar a variedade definida pelo ideal gerado por seus menores maximais. Da mesma forma, as deformações da variedade determinantal podem ser representadas por perturbações da matriz e qualquer perturbação da matriz fornece uma deformação da variedade. Assim, o estudo das singularidades de curvas determinantais pode ser formulado em termos da matriz de representação da curva<br>In this work, we stu
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Lourens, Spencer. "Bias in mixtures of normal distributions and joint modeling of longitudinal and time-to-event data with monotonic change curves." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1685.

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Estimating parameters in a mixture of normal distributions dates back to the 19th century when Pearson originally considered data of crabs from the Bay of Naples. Since then, many real world applications of mixtures have led to various proposed methods for studying similar problems. Among them, maximum likelihood estimation (MLE) and the continuous empirical characteristic function (CECF) methods have drawn the most attention. However, the performance of these competing estimation methods has not been thoroughly studied in the literature and conclusions have not been consistent in published re
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Ghinani, Sasan. "Stimulus-response curves as descriptors of CST function: A functional imaging guided TMS study in normal subjects and patients with subcortical stroke." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=67005.

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Motor evoked potentials (MEP) elicited by transcranial magnetic stimulation (TMS) are used to asses corticospinal tract (CST) function in clinical practice. Advancements in technology have increased TMS precision yet clinical protocols do not reflect the gain in precision required for neuroscientific research. The aim of this study was to determine whether parameters extrapolated from MEP responses accurately reflect CST function. TMS was administered to healthy controls and acute subcortical stroke patients. A sigmoid-shaped dose-response curve was observed in control subjec
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Beegle, David J. "Three-dimensional modeling of rigid pavement." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1176842076.

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Hoang, Van Duc. "Distance and geometry of the set of curves and approximation of optimal trajectories." Thesis, Limoges, 2020. http://aurore.unilim.fr/theses/nxfile/default/05f29d7f-d019-4ee6-8304-dcb9f95be382/blobholder:0/2020LIMO0013.pdf.

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Les problèmes d'optimisation sur l'ensemble des courbes apparaissent dans de nombreux domaines d'applications industrielles comme la robotique, la planification de mouvements et l'aérospatiale. Dans cette thèse, nous étudions l'ensemble des courbes et proposons une méthode générale pour problèmes d'optimisation de trajectoires, équations différentielles ordinaires autonomes et commande des équations différentielles ordinaires autonomes. Dans la première partie, nous fournissons une normalisation des courbes paramétrées sous l'action des difféomorphismes croissants et nous utilisons cette norma
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Vanzo, Davide. "Curve razionali normali e loro proiezioni." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amslaurea.unibo.it/1592/.

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Roos, René. "Model for interlaminar normal stresses in doubly curved laminates /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17725.

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Eilerman, Amanda Louise. "Foveal Pit Curvature in a Normal Population." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461109213.

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Books on the topic "Normal curves"

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Pan, Xuanyu. Rational normal curves on complete intersections. [publisher not identified], 2014.

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Repsold, H. Resistivity master curves for multiple-point resistivity measurements in boreholes: Layers of infinite thickness, normal and lateral arrays = : Widerstandsabweichungskurven für Mehrpunktwiderstandsverfahren in Bohrlöchern : Schichten mit unendlicher Mächtigkeit, Normal- und Lateral-Anordnung. Bundesanstalt für Geowissenschaften und Rohstoffe und den Geologischen Landesämtern in der Bundesrepublik Deutschland, 1990.

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Alling, Norman L. Collected papers of Norman Alling. Edited by Ribenboim Paulo. Queen's University, 1998.

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1976-, Gurn Alex, ed. The myth of the normal curve. Peter Lang, 2010.

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Ghandehari, Mostafa. Controlling curvature in the Minkowski plane. Dept. of Mathematics, University of Texas at Arlington, 1997.

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Rosen, Dietrich von. Multivariate linear normal models with special references to the growth curve model. Stockholms Universitet, 1985.

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1944-, Le Potier Joseph, Verdier Jean Louis, and Ecole normale supérieure (France), eds. Module des fibrés stables sur les courbes algébriques: Notes de l'Ecole normale supérieure, printemps, 1983. Birkhäuser, 1985.

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Larson, Eric, David Yang, and Atanas Atanasov. Interpolation for Normal Bundles of General Curves. American Mathematical Society, 2019.

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Gurn, Alex. Myth of the Normal Curve. Lang AG International Academic Publishers, Peter, 2010.

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Harrison, Mark. Normal distribution. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198765875.003.0063.

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This chapter describes normal distribution as it applies to Emergency Medicine, and in particular the Primary FRCEM examination. The chapter outlines the key details of the bell-shaped curve, standard deviation, and confidence intervals. This chapter is laid out exactly following the RCEM syllabus, to allow easy reference and consolidation of learning.
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Book chapters on the topic "Normal curves"

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Pinkall, Ulrich, and Oliver Gross. "Parallel Normal Fields." In Compact Textbooks in Mathematics. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-39838-4_4.

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AbstractFor curves $$\gamma \colon [a,b] \to \mathbb {R}^n$$ γ : [ a , b ] → ℝ n there is an analog $$\kappa \colon [a,b] \to \mathbb {R}^{n-1}$$ κ : [ a , b ] → ℝ n − 1 of the curvature function of a plane curve. In the context of unit speed curves, this function $$\kappa $$ κ determines $$\gamma $$ γ up to an orientation-preserving rigid motion of $$\mathbb {R}^n$$ ℝ n . Before we can define $$\kappa $$ κ , we have to study parallel normal vector fields along a curve in $$\mathbb {R}^n$$ ℝ n .
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Ramli, Ahmad, and Ioannis Ivrissimtzis. "Bootstrap-Based Normal Reconstruction." In Curves and Surfaces. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27413-8_38.

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Notari, Roberto, Ignacio Ojeda, and Maria Luisa Spreafico. "Doubling Rational Normal Curves." In Liaison, Schottky Problem and Invariant Theory. Birkhäuser Basel, 2010. http://dx.doi.org/10.1007/978-3-0346-0201-3_9.

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Oswald, Peter. "Normal Multi-scale Transforms for Surfaces." In Curves and Surfaces. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27413-8_34.

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Harizanov, Stanislav. "Globally Convergent Adaptive Normal Multi-scale Transforms." In Curves and Surfaces. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27413-8_19.

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Lávička, Miroslav, and Jan Vršek. "On a Special Class of Polynomial Surfaces with Pythagorean Normal Vector Fields." In Curves and Surfaces. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27413-8_27.

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Schaefer, Marcus, Eric Sedgwick, and Daniel Štefankovič. "Algorithms for Normal Curves and Surfaces." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-45655-4_40.

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Pinkall, Ulrich, and Oliver Gross. "Curves in $$\mathbb {R}^3$$." In Compact Textbooks in Mathematics. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-39838-4_5.

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AbstractFor a closed curve $$\gamma \colon [a,b]\to \mathbb {R}^3$$ γ : [ a , b ] → ℝ 3 with unit tangent field T, we can use a parallel normal vector field to transport a normal vector $$W_a\in T(a)^\perp $$ W a ∈ T ( a ) ⊥ at the starting point of $$\gamma $$ γ to a normal vector $$W_b\in T(b)^\perp $$ W b ∈ T ( b ) ⊥ at the end point.
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Kohel, David. "Twisted $${\mu }_4$$ -Normal Form for Elliptic Curves." In Lecture Notes in Computer Science. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56620-7_23.

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Chiantini, Luca, and Ferruccio Orecchia. "Plane sections of arthmetically normal curves in ℙ3." In Lecture Notes in Mathematics. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/bfb0085922.

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Conference papers on the topic "Normal curves"

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Pira, Jenny, Fabián Lamus, Juan Lizarazo, Patricia Luna, and Juan Reyes. "Flexural experimental assessment of ductility of SFRC beams using longitudinal reinforcing bars." In IABSE Congress, San José 2024: Beyond Structural Engineering in a Changing World. International Association for Bridge and Structural Engineering (IABSE), 2024. https://doi.org/10.2749/sanjose.2024.0113.

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&lt;p&gt;Nowadays, products are available to improve the performance of reinforced concrete elements, such as short fibers, which are available in different geometries and aspect ratios. However, the regulations and standards for building construction do not allow its use in elements of the seismic resistance system. Therefore, a composite material called SFRC (steel fiber reinforced concrete) is being widely used in slabs, shells, or coatings as reinforcement to replace welded wire meshes or as a control system for shrinkage and pressure cracks in tunnels. For this research, SFRC specimens we
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Moldovan, Lucian, Adrian Jurca, Mihai Magyari, Marcel Rad, and Valentin Sirbu. "SPECIFIC ASPECTS REGARDING THE TESTING OF FLAMEPROOF ENCLOSURE EQUIPMENT INTENDED FOR USE IN HAZARDOUS AREAS ENDANGERED BY THE PRESENCE OF HYDROGEN." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/1.1/s06.82.

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The type of protection flameproof enclosure consists in placing the parts that can ignite an explosive atmosphere into an enclosure that can withstand an internal explosion and it prevents the transmission of the explosion effects (hot gases, flames, incandescent particles etc.) capable of ignition to the external explosive atmosphere in which the equipment is placed. The purpose of the paper is to underline some specific situations that can occur during the tests in explosive mixtures needed to verify the characteristics ensuring explosion protection in case of flameproof enclosure �d� type o
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Wootton, Aaron. "Non-normal Belyi p-gonal surfaces." In Computational Aspects of Algebraic Curves. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812701640_0008.

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Pottmann, Helmut, and Anthony D. DeRose. "Classification using normal curves." In Robotics - DL tentative, edited by Martine J. Silbermann and Hemant D. Tagare. SPIE, 1992. http://dx.doi.org/10.1117/12.135146.

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Kuether, R. J., L. Renson, T. Detroux, C. Grappasonni, G. Kerschen, and M. S. Allen. "Prediction of Isolated Resonance Curves Using Nonlinear Normal Modes." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46301.

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Isolated resonance curves are separate from the main nonlinear forced-response branch, so they can easily be missed by a continuation algorithm and the resonant response might be underpredicted. The present work explores the connection between these isolated resonances and the nonlinear normal modes of the system and adapts an energy balance criterion to connect the two. This approach provides new insights into the occurrence of isolated resonances as well as a method to find an initial guess to compute the isolated resonance curve using numerical continuation. The concepts are illustrated on
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Rubio, Rosario, J. Miguel Serradilla, and M. Pilar Vélez. "A note on implicitization and normal parametrization of rational curves." In the 2006 international symposium. ACM Press, 2006. http://dx.doi.org/10.1145/1145768.1145818.

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Samanta, Kuntal, and Bahattin Koc. "Ruled Layer Generation Between Two Freeform Curves by Normal and Distance Matching." In ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99582.

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A new curve matching method is proposed to generate non-self-intersecting and non-twisted ruled layers for application in diverse fields such as layered manufacturing, offsetting and multi-axis CNC machining. The method establishes point-to-point correspondence represented by a set of ruling lines between two directrices of the ruled surface. The directrices are given as non-self-intersecting, closed, at least C1 continuous, planar, B-spline curves. To match the points on the directrices, a heuristic optimization method developed with the objective is to maximize the sum of the inner products
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Perktaş, Selcen Yüksel, Adara M. Blaga, Bilal Eftal Acet, and Feyza Esra Erdoğan. "Magnetic biharmonic curves on 3-dimensional normal almost paracontact metric manifolds." In 1ST INTERNATIONAL CONFERENCE ON MATHEMATICAL AND RELATED SCIENCES (ICMRS 2018). Author(s), 2018. http://dx.doi.org/10.1063/1.5047877.

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Perktaş, Selcen Yüksel, and Feyza Esra Erdoğan. "Biharmonic slant Frenet curves in 3-dimensional normal almost paracontact metric manifolds." In II. INTERNATIONAL CONFERENCE ON ADVANCES IN NATURAL AND APPLIED SCIENCES: ICANAS 2017. Author(s), 2017. http://dx.doi.org/10.1063/1.4981674.

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Shirase, Masaaki. "An Improved Addition Formula on Elliptic Curves Given by Weierstrass Normal Form." In 2013 16th International Conference on Network-Based Information Systems (NBiS). IEEE, 2013. http://dx.doi.org/10.1109/nbis.2013.88.

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Reports on the topic "Normal curves"

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Yibchok-anun, Sirintorn, and Wara Panichkriangkrai. The role of arginine vasopressin in diabetes-associated glucagons secretion. Chulalongkorn University, 2002. https://doi.org/10.58837/chula.res.2002.63.

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The purpose of this study was to investigate the role of arginine-vasopressin (AVP) on glucagons secretion in both normal and diabetic rats. Diabetes was induced by intraperitoneal administration of alloxan HCI(200 mg/kg). Both glucagon and AVP were determined in the effluent of the perfused pancreas using radioimmunoassay. Diabetic rats had higher baseline glucagons concentrations than normal rats. AVP (1 pmol/L) failed to change glucagons secretion in normal rats, but significantly increased glucagons secretion in diabetic rats. AVP (10-100 pmol/L) increased glucagons secretion from both nor
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Wagner, D. Ry, Eliezer Lifschitz, and Steve A. Kay. Molecular Genetic Analysis of Flowering in Arabidopsis and Tomato. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7585198.bard.

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The primary objectives for the US lab included: the characterization of ELF3 transcription and translation; the creation and characterization of various transgenic lines that misexpress ELF3; defining genetic pathways related to ELF3 function regulating floral initiation in Arabidopsis; and the identification of genes that either interact with or are regulated by ELF3. Light quality, photoperiod, and temperature often act as important and, for some species, essential environmental cues for the initiation of flowering. However, there is relatively little information on the molecular mechanisms
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Gutiérrez Aguilera, Pedro Alexander. Características del acero como material estructural. Ediciones Universidad Cooperativa de Colombia, 2023. http://dx.doi.org/10.16925/gcnc.73.

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A lo largo del tiempo, el acero se ha producido a través de diferentes procesos físico-químicos y empleado como material estructural desde mediados del siglo XVIII en la industria de la construcción. Inicialmente su uso se limitaba a la industria naval pero alrededor de 1908 se comenzaron a fabricar las primeras vigas de patín ancho y su empleo se extendió a la construcción de puentes y edificaciones. Como material en las estructuras el acero presenta muchas ventajas en comparación con otros, como por ejemplo su alta resistencia, tenacidad, uniformidad, durabilidad elasticidad y ductilidad. Po
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Wilkowski, G. M., D. Rudland, P. Mincer, B. Metrovich, and D. Rider. L52249 Failure Initation Modes of Pipe with High Charpy Transition Temperature. Pipeline Research Council International, Inc. (PRCI), 2007. http://dx.doi.org/10.55274/r0012041.

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This report presents a methodology that determines the lowest temperature where ductile fracture would occur for either sharp cracks or blunt corrosion flaws in older low-toughness line pipe base metals. It is applicable to either axial or circumferential flaws in pipes under quasi-static loading, i.e., normal operating conditions with no sudden transient loads. The results showed that ductile initiation of a surface crack can occur at a significantly lower temperature than the Charpy transition temperature. A master curve of transition temperatures for different pipe thickness and crack geome
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Wang, Yao, Jeehee Lim, Rodrigo Salgado, Monica Prezzi, and Jeremy Hunter. Pile Stability Analysis in Soft or Loose Soils: Guidance on Foundation Design Assumptions with Respect to Loose or Soft Soil Effects on Pile Lateral Capacity and Stability. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317387.

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The design of laterally loaded piles is often done in practice using the p-y method with API p-y curves representing the behavior of soil at discretized points along the pile length. To account for pile-soil-pile interaction in pile groups, AASHTO (2020) proposes the use of p-multipliers to modify the p-y curves. In this research, we explored, in depth, the design of lateral loaded piles and pile groups using both the Finite Element (FE) method and the p-y method to determine under what conditions pile stability problems were likely to occur. The analyses considered a wide range of design scen
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Hernandez Martinez, Victor, Hans A. Holter, and Roberto B. Pinheiro. The Hedgehog’s Curse: Knowledge Specialization and Displacement Loss. Federal Reserve Bank of Cleveland, 2022. http://dx.doi.org/10.26509/frbc-wp-202231.

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This paper studies the impact of knowledge specialization on earnings losses following displacement. We develop a novel measure of the specialization of human capital, based on how concentrated the knowledge used in an occupation is. Combining our measure with individual labor histories from the NLSY 79-97 and Norway’s LEED, we show that workers with more specialized human capital suffer larger earnings losses following exogenous displacement. A one standard deviation increase in pre-displacement knowledge specialization increases the earnings losses post-displacement by 3 to 4 pp per year in
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Wilkowski, Gery. L52249 Failure Initiation Modes of Pipe with High Charpy Transition Temperature. Pipeline Research Council International, Inc. (PRCI), 2004. http://dx.doi.org/10.55274/r0010352.

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This project was developed to establish a general methodology to; (a) determine a simple way to assess what is the lowest temperature where ductile crack initiation will occur for a sharp crack or a blunt flaw (i.e., corrosion), (b) to developed several optional approaches to predict the transition temperature shifts that depend on what type of lab specimen data are available, and (c) show validation from past tests as well as by conducting tests on older vintage linepipe steels. This report presents a methodology that determines the lowest temperature where ductile fracture would occur for ei
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Cavallo, Eduardo A., and Christian Daude. Public Investment in Developing Countries: A Blessing or a Curse? Inter-American Development Bank, 2008. http://dx.doi.org/10.18235/0010897.

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This paper analyzes the impact of public investment on private investment in 116 developing countries between 1980 and 2006. It finds a strong crowding-out effect that seems to be the norm rather than the exception, both across regions and over time. This effect is dampened (or even reversed) in countries with better institutions that are more open to international trade and financial flows. These results confirm that while public infrastructure may complement private capital, distortions associated with the public investment process might crowd out private investment in the course of building
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Yenes, Laura, Puy Ayarza, Pablo Calvín, and Alberto Santamaría. ORIGEN DE LA ANOMALÍA MAGNÉTICA DE SALAMANCA. CONTRIBUCIÓN DE LA FORMACIÓN ALDEATEJADA (PROTEROZOICO SUPERIOR) Y DE LAS PIZARRAS ORDOVÍCICAS. Ilustre Colegio Oficial de Geólogos, 2021. http://dx.doi.org/10.21028/ly.2021.05.25.

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La Anomalía Magnética de Salamanca (AMSA) presenta una amplitud y geometría que sugieren la existencia de una fuente localizada a poca profundidad y situada ligeramente al sureste de la propia ciudad. Su característica más llamativa es su polaridad inversa, que indica la existencia de rocas con una magnetización remanente adquirida durante un cron de polaridad inversa. Se han estudiado dos litologías que son potencialmente portadoras de una magnetización remanente natural (NRM) compatible con dicha anomalía: las Pizarras de Aldeatejada (Neoproterozoico) y las Pizarras del Ordovícico Medio, amb
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Ruschau. L51771 Alternative Acceptance Criteria of Girth Weld Defects. Pipeline Research Council International, Inc. (PRCI), 1997. http://dx.doi.org/10.55274/r0010187.

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The girth weld defect acceptance standards based on good workmanship reflect quality levels that can be reasonably expected from a qualified welder. Workmanship (WM) or weld quality standards specify a maximum allowable length whilst the percentage loss of cross-sectional area is used for porosities. This approach to defect acceptance philosophy has arisen from the use of radiography as the NDE technique for detecting and quantifyingweld discontinuities. The first WM standard for inspection and acceptance of finished girth welds was implemented by API in 1953. The specific requirements of the
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