Relevant bibliographies by topics / Curve line

Contents

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

Academic literature on the topic 'Curve line'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Curve line"

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Kovacic, Ivana, and Richard Rand. "Straight-line backbone curve." Communications in Nonlinear Science and Numerical Simulation 18, no. 9 (2013): 2281–88. http://dx.doi.org/10.1016/j.cnsns.2012.11.031.

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JURAK, MLADEN, and JOSIP TAMBAČA. "LINEAR CURVED ROD MODEL: GENERAL CURVE." Mathematical Models and Methods in Applied Sciences 11, no. 07 (2001): 1237–52. http://dx.doi.org/10.1142/s0218202501001318.

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A one-dimensional model of a curved rod is derived from the three-dimensional linearized elasticity. No positivity assumption on the curvature of the central line of the curved rod is made. The model is obtained by taking the limit in the equilibrium equation of the three-dimensional elastic rod when the thickness of the rod goes to zero. The appropriate convergence result is proved.
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XIAO, YIJUN, MINGYUE DING, and JIAXIONG PENG. "B-SPLINE BASED STEREO FOR 3D RECONSTRUCTION OF LINE-LIKE OBJECTS USING AFFINE CAMERA MODEL." International Journal of Pattern Recognition and Artificial Intelligence 15, no. 02 (2001): 347–58. http://dx.doi.org/10.1142/s0218001401000915.

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This paper presents a novel curve based algorithm of stereo vision to reconstruct 3D line-like objects. B-spline approximations of 2D edge curves are selected as primitives for the reconstruction of their corresponding space curves so that, under the assumption of affine camera model, a 3D curve can be derived from reconstructing its control points according to the affine invariant property of B-Spline curves. The superiority of B-spline model in representing free-form curves gives good geometric properties of reconstruction results. Both theoretical analysis and experimental results demonstra
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Fang, Gui Hua, and Li Bo Zhang. "Improvement of Folded Line Assistance Characteristics Curve for EHPS System." Advanced Materials Research 945-949 (June 2014): 1314–17. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.1314.

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Electro-hydraulic power steering system (EHPS) assistance characteristic curves are generally linear, folded line and curve type. The folded line type combines the advantages of linear and curve type assistance characteristic, but the slope of the characteristic curve changes suddenly, which have an impact on the driver, leading to potentially dangerous. In view of existing problem, the article studies deeply the characteristics of the power system to apply computer simulation technology, and improves the folded line characteristic curve. The simulation analytic results show clearly that the i
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Kagami, Yoshiyuki, Takashi Emura, and Masayuki Hiyama. "Vision-based playback method of wheeled mobile robots." Robotica 18, no. 3 (2000): 281–86. http://dx.doi.org/10.1017/s026357479900257x.

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This paper describes a new vision-based playback method of a wheeled mobile robot. The path of the robot is divided into straight line parts and curved line parts. The curved line parts were approximated by a Bézier curve to decrease the volume of data. In order to track the curved line parts with good accuracy, tracking errors were detected by referring to two pre-recorded images on one part of the curve. Then, the errors were corrected by adjusting the control points of the Bézier curve. Outdoor experiments demonstrated good repeatability by using the proposed method.
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Belay, Aschale Moges. "Line integral and its applications." Engineering and Applied Science Letters 5, no. 1 (2022): 47–63. https://doi.org/10.30538/psrp-easl2022.0084.

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This study focused on line integral and its applications. The study was designed to show the areas where line integral is applicable and point out the role of line integral in solving practical problems. The study found out that space curves, and the concepts of scalar and vector fields are basic concepts to deal line integral. Also, the study found out that line integral is used to calculate mass, center of mass and moments of inertia of a wire, work done by a force on an object moving in a vector field, magnetic field around a conduct, voltage generated in a loop, length of a curve, area of
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Xie, Aishu, Moung Ervin Gubin, Xu Zhou, and Zhibang Yang. "A fully automatic curve localization method for extracted spine." A fully automatic curve localization method for extracted spine 14, no. 4 (2024): 4018–33. https://doi.org/10.11591/ijece.v14i4.pp4018-4033.

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The automation of scoliosis positioning presents a challenging and often understated task, yet it holds fundamental significance for the automated analysis of spinal morphological anomalies. This paper introduces a novel spinal curve localization model for precisely differentiating the spinal curves and identifying their concave centers. The proposed model contains three components: i) custom spine central line model, to define the spine central line as a combination of several secant line sequences with different polarities; ii) custom curve model, to classi
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Nunobiki, Masayuki, Koichi Okuda, Kousuke Hourai, and Hiroo Shizuka. "Bending of Pure Titanium Sheet to Curved Surface Shape by Laser Forming Technique." Advanced Materials Research 126-128 (August 2010): 388–93. http://dx.doi.org/10.4028/www.scientific.net/amr.126-128.388.

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This paper deals with laser forming procedure to bend pure titanium sheets along arbitrary curved shape. In preliminary experiments, single straight-line bending was carried out and the relationship between bending angle and laser irradiation conditions was investigated. It was clarified that the bending angle was able to control with scanning velocity and the number of scanning passes. With use of obtained experimental formula for the bending angle, we tried to bend the Ti sheet along given parabola shape with a multi straight-line bending. The experimental result was corresponding to the tar
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Korotkiy, Viktor, and Igor' Vitovtov. "NATURE-LIKE CURVE MODELING." Bulletin of Bryansk state technical university 2021, no. 6 (2021): 11–22. http://dx.doi.org/10.30987/1999-8775-2021-6-11-22.

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A physical spline is called an elastic rod the cross- section dimensions of which are rather small as compared with the length and radius of its axis curvature. Such a rod when passing through specified points obtains in natural way a nature-like shape characterized with minimum energy of inner stresses and minimum mean curvature. A search for the equation of elastic line is a difficult mathematical problem having no elementary solution. 
 The work purpose: the development of the experimental-rated procedure for modeling a nature-like elastic curve passing through complanar points specifi
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Wang, Qi Kui, You Dong Chen, Wei Li, Tian Miao Wang, and Hong Xing Wei. "Loci Conversion and Corner Smoothing with PH Curves in CNC System." Key Engineering Materials 419-420 (October 2009): 161–64. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.161.

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Free-form surface interpolation functions give more advantages in machining than the traditional line and circle functions. A method is developed to convert lines and circles into Pythagorean-hodograph (PH) curves. In order to get smooth machining process the PH curve is used to replace the joints of the circular/linear elements by the connection situation. The slope of line is used to get the tangent vector in the line conversion. When converting a circle to a PH curve, points of the divided circle are introduced to compute the vectors. The methods of computing tangent vectors are proposed ac
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Dissertations / Theses on the topic "Curve line"

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Tatikonda, Sekhar Chandra. "Curve reconstruction via line intersection tomography." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36542.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.<br>Includes bibliographical references (leaf 61).<br>by Sekhar Chandra Tatikonda.<br>M.S.
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Hsia, Wei-Kung 1958. "DOUBLE ANGLE CONNECTION MOMENTS (RICHARD EQUATION, PRYING FORCE, BEAM-LINE THEORY, MOMENT ROTATION CURVE)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/291892.

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Li, Bo. "Interest Curves : Concept, Evaluation, Implementation and Applications." Doctoral thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-111175.

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Image features play important roles in a wide range of computer vision applications, such as image registration, 3D reconstruction, object detection and video understanding. These image features include edges, contours, corners, regions, lines, curves, interest points, etc. However, the research is fragmented in these areas, especially when it comes to line and curve detection. In this thesis, we aim to discover, integrate, evaluate and summarize past research as well as our contributions in the area of image features. This thesis provides a comprehensive framework of concept, evaluation, impl
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Deller, Jason. "The effects of road geometry and posted speed limits on driver speed selection." Thesis, Queensland University of Technology, 2020. https://eprints.qut.edu.au/205849/2/Jason_Deller_Thesis.pdf.

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This research investigates the complex relationship between roadway design and operating speeds and how drivers respond to these roadway design characteristics. It seeks to understand the effects of road geometry within a complex urban road environment on driver speed selection by conducting an advanced driving simulator experiment and an observational study completed in an Australian town. The results show that a reduction or an increase in lane width, the presence of posted speed signage or a change in the posted speed limit, horizontal curves, and centre line marking influence driver speed
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Дяченко, А. В., та Н. В. Підопригора. "Застосування диференціальної геометрії у технічних завданнях". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/43354.

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Важливою характеристикою кривої лінії є її кривизна – міра вигнутості. Розглядаючи криву L і точки А та В в яких проведено дотичні, можна мати деяку уяву про степінь вигнутості кривої L на дузі АВ: чим більша величина кута α, тим сильніше вигнута L. Але сама по собі величина кута ще не може бути мірою заданої вигнутості.
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Křemen, Tomáš. "Rekonstrukce železniční stanice Milevsko." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227594.

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The aim of the diploma thesis is the reconstruction of Milevsko railway station. The platforms with access persons with reduced mobility are designed in this station. The rail substructure and station drainage system design was necessary to do within the reconstruction. New assembly of a switches and crossing is the part of reconstruction design as well.
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Arène, Christophe. "Géométrie et arithmétique explicites des variétés abéliennes et applications à la cryptographie." Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX22069/document.

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Les principaux objets étudiés dans cette thèse sont les équations décrivant le morphisme de groupe sur une variété abélienne, plongée dans un espace projectif, et leurs applications en cryptographie. Notons g sa dimension et k son corps de définition. Ce mémoire est composé de deux parties. La première porte sur l'étude des courbes d'Edwards, un modèle pour les courbes elliptiques possédant un sous-groupe de points k-rationnels cyclique d'ordre 4, connues en cryptographie pour l'efficacité de leur loi d'addition et la possibilité qu'elle soit définie pour toute paire de points k-rationnels (lo
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Smith, Byron L. "Mean strain effects on the strain life fatigue curve." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA267211.

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Kozák, Petr. "Napojení JV obchvatu města Jihlavy-křižovatka silnic I/38 a II/523." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225923.

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This diploma work deals with researching study of transport junction of main road I/38 and major road II/523 and than link-up of the proposed Outer ring road (VMO) and Southeastern by-pass (JVO) routes of region capital Jihlava, district of Jihlava, Vysočina region. Road structure will solve designed staged link-up of aboved mentioned roads according to their construction schedule. The design takes into account current roads and completed stages, with respect to minimum costs. Road structure is situated on Czech-Moravian Highlands. Its terrain is hilly, pondy and composed of agricultural parce
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Raif, Lukáš. "Studie rekonstrukce železniční stanice Prostějov hl.n." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226633.

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The aim of the diploma thesis is the reconstruction of Prostějov hl. n. railway station. The platforms with access persons with reduced mobility are designed in this station. The rail substructure and station drainage system design was necessary to do within the reconstruction. New assembly of a switches and crossing is the part of reconstruction design as well.
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Books on the topic "Curve line"

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M, Leighly Karen, Columbia University Trustees, Columbia Astrophysics Laboratory (Columbia University), and United States. National Aeronautics and Space Administration., eds. "Monitoring MRK 509: The origin of the reprocessor" and "Broad band X-ray spectrum of narrow line Seyfert 1 AKN 564". National Aeronautics and Space Administration, 1998.

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M, Leighly Karen, Columbia University Trustees, Columbia Astrophysics Laboratory (Columbia University), and United States. National Aeronautics and Space Administration., eds. "Monitoring MRK 509: The origin of the reprocessor" and "Broad band X-ray spectrum of narrow line Seyfert 1 AKN 564". National Aeronautics and Space Administration, 1998.

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1947-, Paciesas William Simon, and United States. National Aeronautics and Space Administration., eds. BATSE observations of Nova Muscae 1991. National Aeronautics and Space Administration, 1993.

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Parmley, Mary T. Retirement curve ahead! National Council on the Aging, 1997.

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Gutenmacher, Victor, and N. B. Vasilyev. Lines and Curves. Birkhäuser Boston, 2004. http://dx.doi.org/10.1007/978-1-4757-3809-4.

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Kōbō, Abe. Beyond the curve. Kodansha International, 1991.

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Translated by Juliet Winters Carpenter. Shiro Tsujimura (cover art), ed. Beyond the Curve. Kodansha International (JPN), 1993.

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Daugherty, Billy Joe. When life throws you a curve. Destiny Image Publishers, 2006.

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Palmer, Bernard. Cure for life. Christian Medical Fellowship, 2002.

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Quinn, Susan. Marie Curie: A life. Heinemann, 1995.

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Book chapters on the topic "Curve line"

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Um, Dugan. "Parametric Line and Curve Theory." In Solid Modeling and Applications. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74594-7_4.

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Dvoretskii, Aleksandr, and Tetiana Denysova. "Quasifocal Line and “Burning Curve”." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95588-9_19.

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Um, Dugan. "Parametric Line and Curve Theory." In Solid Modeling and Applications. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21822-9_4.

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Mukherjee, J., G. J. Peters, and R. E. Wilson. "Binary Star Rotation from Line Profiles." In Light Curve Modeling of Eclipsing Binary Stars. Springer New York, 1993. http://dx.doi.org/10.1007/978-1-4612-2742-7_6.

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Zerbi, Filippo M. "Simultaneous Light Curve, Color Curve and Line Profile Fitting for Pulsating Stars." In Variable Stars as Essential Astrophysical Tools. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4299-1_11.

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Chen, Yangzhi, and Xiongdun Xie. "Planar Helix Driving Contact Curve Line Gear Mechanism." In Advances in Mechanical Design. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6553-8_2.

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Zhang, Yong Hong, Hui Qiang Tang, Quan Lin Bu, and De Jin Hu. "Studies on CCD On-Line Detection in Curve Grinding." In Materials Science Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-990-3.607.

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Masters, William A., and Amelia B. Finaret. "Individual Choices: Explaining Food Consumption and Production." In Food Economics. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-53840-7_2.

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AbstractEvery person sometimes chooses different foods, based in part on preferences developed over time in their family, cultural and community context. Similarly, each farmer has their own way of helping crops and livestock grow, and every food producer transforms ingredients into final products in a unique manner. Individual actions by millions of consumers and producers underpin the food systems we observe. In this chapter, we use analytical diagrams with indifference curves and budget lines to explain food consumption choices and predict how food consumption might change in response to di
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Ubul, Kurban, Ruxianguli Abudurexiti, Hornisa Mamat, Nurbiya Yadikar, and Tuergen Yibulayin. "Uyghur Off-line Signature Recognition Based on Modified Corner Curve Features." In Biometric Recognition. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46654-5_46.

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Balza-Gomez, Hélymar, Jean-Michel Moreau, and Dominique Michelucci. "Convex Hull of Grid Points below a Line or a Convex Curve." In Discrete Geometry for Computer Imagery. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-49126-0_28.

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Conference papers on the topic "Curve line"

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Abed, Achref, Hafedh Trabelsi, and Faouzi Derbel. "Dynamic Line Sag Monitoring Using Image-Based Bézier Curve Fitting." In 2025 IEEE 22nd International Multi-Conference on Systems, Signals & Devices (SSD). IEEE, 2025. https://doi.org/10.1109/ssd64182.2025.10990005.

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Chen, Nuo, Guyu Li, Dehong Tang, Yuhang Ling, Shaonan Wang, and Yi Luo. "LCC-MMC HVDC Line Pilot Protection Based on U-Q Characteristic Curve." In 2024 IEEE International Conference on DC Technologies and Systems (DCTS). IEEE, 2024. https://doi.org/10.1109/dcts62535.2024.10939351.

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Suwanasri, Cattareeya, Ittiphong Yongyee, and Thanapong Suwanasri. "Transmission Line Age Determination with Statistical Health Index and Failure Probability Curve Fitting Technique." In 2024 10th International Conference on Condition Monitoring and Diagnosis (CMD). IEEE, 2024. https://doi.org/10.23919/cmd62064.2024.10766119.

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Lewis, David. "Evaluation of Transmission Line Sag for Magnetically Induced Voltage on Pipelines in Shared Corridors." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19508.

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Abstract Transmission line phase conductors and overhead wires are affected by sag that vary the distance of these conductors to the earth. This corresponds to a varying separation distance of current carrying phase conductors producing the magnetic fields to parallel pipelines in shared corridors. This paper explores the effects of phase conductors and shield wires’ sag to evaluate the induced voltages on parallel pipelines. Methodologies to consider the sag of the conductors include catenary curves, straight sloped conductors mimicking the maximum and minimum conductor elevations, and unifor
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Nugent, M., T. Silfies, J. D. Dobis, and Tim Armitt. "A Review of High Temperature Hydrogen Attack (HTHA) Modeling, Prediction, and Non-Intrusive Inspection in Refinery Applications." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-08924.

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Abstract In 2016, the most significant change in the last 25 years was made to API(1) RP 941 Steels for Hydrogen Service at Elevated Temperatures and Pressures in Petroleum Refineries and Petrochemical Plants (i.e., The Nelson Curves).1 A new “curve” for non-post weld heat treated carbon steel was added that is approximately 50°F (10°C) to 75°F (24°C) below the existing carbon steel line and at lower hydrogen partial pressure. This places a significant amount of existing piping and equipment above the new curve, in a potential area of concern from a mechanical integrity perspective. A brief su
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Shirahata, Ryo, Shin’ichi Agari, and Kenjiro T. Miura. "Input of Log-Aesthetic Curves by Use of Control Points: Plugging an LA Curve Module in a Commercial Geometric Modeler." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-29223.

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In the field of industrial design, the aesthetic design is an important element to determine the quality of products and it is inevitable for them to make it aesthetic and attractive to improve the total quality of the shape design. If we can find an equation of aesthetic curves, it is expected that the quality of the curve design improves drastically because we can use it as a standard to generate, evaluate, and deform the curves. The log-aesthetic curve was proposed to generate high-quality curves efficiently [6]. Harada et al. insist that natural aesthetic curves like birds’ eggs and butter
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Yurovsky, Vladimir A. "Curve crossing beyond semiclassical approximations." In The 15th international conference on spectral line shapes. AIP, 2001. http://dx.doi.org/10.1063/1.1370666.

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Solin, Jussi, Gerhard Nagel, and Wolfgang Mayinger. "Cyclic Behavior and Fatigue of Stainless Surge Line Material." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-78138.

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Fatigue of Niobium stabilized austenitic stainless steel (X6CrNiNb1810mod) was studied using specimens extracted from a solution annealed and quenched φ360×32 mm pipe, which fulfils all the German KTA material requirements for primary components in BWR and PWR. An experimental strain life fatigue curve was determined as a base line for component specific evaluations and for comparison with the Langer and Chopra curves, which are the basis of the ASME III and NRC RG 1.207 design criteria. Stress strain responses in strain controlled tests were carefully measured to clarify the fatigue mechanism
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Dandan Zhu and Yan Cui. "Understanding random guessing line in ROC curve." In 2017 2nd International Conference on Image, Vision and Computing (ICIVC). IEEE, 2017. http://dx.doi.org/10.1109/icivc.2017.7984735.

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Lone, Erling N., Bernt J. Leira, Thomas Sauder, Vegard Aksnes, Øystein Gabrielsen, and Kjell Larsen. "Influence of Mean Tension on Mooring Line Fatigue Life." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18628.

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Abstract Studies published in recent years have documented a significant mean load effect on fatigue capacity for offshore mooring chain, and show that a reduction of the mean load gives an increase in fatigue life. However, current S-N design curves are based on fatigue tests performed at a mean load of 20% of minimum breaking load (MBL), which is well above the typical mean loads for most mooring systems. This paper investigates the mean loads experienced during fatigue damage accumulation for the mooring system of a typical production semi-submersible, operating in Norwegian Sea conditions.
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Reports on the topic "Curve line"

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Levell, Peter, and Alex Davenport. Changes down the line: flattening the curve of public transport use. Institute for Fiscal Studies, 2020. http://dx.doi.org/10.1920/bn.ifs.2020.bn0287.

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Rudland. L52245 Improvements to the Two Curve Ductile Fracture Model - Soil-Elastic and Plastic Contributions. Pipeline Research Council International, Inc. (PRCI), 2007. http://dx.doi.org/10.55274/r0010625.

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The most commonly used fracture analyses procedure for the prediction of minimum arrest toughness and fracture speed for axially running cracks in line pipe materials for natural gas transmission pipeline applications is the Battelle Two-Curve approach. This analysis procedure incorporates the gas-decompression behavior with the fracture toughness of the pipe material to predict the minimum Charpy energy required for crack arrest. For this model, the effect of backfill on the propagating crack fracture speeds is lumped into one empirically based �backfill coefficient,� which does not distingui
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L'Huillier, Jean-Paul, and Gregory Phelan. Can Supply Shocks Be Inflationary with a Flat Phillips Curve? Federal Reserve Bank of Cleveland, 2023. http://dx.doi.org/10.26509/frbc-wp-202336.

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Not in standard models. With conventional pricing frictions, imposing a flat Phillips curve also imposes a price level that is rigid with respect to supply shocks. In the New Keynesian model, price markup shocks need to be several orders of magnitude bigger than other shocks in order to fit the data, leading to unreasonable assessments of the magnitude of the increase in costs during inflationary episodes. To account for the facts, we propose a strategic microfoundation of shock-dependent price stickiness: prices are sticky with respect to demand shocks but flexible with respect to supply shoc
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Unknown, Author. PR-213-9103-R01 Capabilities-Limitations of the S-Curve Pipelay Method. Pipeline Research Council International, Inc. (PRCI), 1991. http://dx.doi.org/10.55274/r0011969.

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Evaluated the typical Gulf of Mexico pipelay barges and assess their ability to install 8 to 20-inch diameter pipelines in water depths ranging from 1000 ft to 3000 ft. McDermott's LB-29 and DB-28, Global Pipelines PLUS' Cherokee, and OPI's DLB-423 were evaluated. Allseas' the North Sea dynamically positioned lay vessel Lorelay was also evaluated for comparison. Pipe wall thicknesses to satisfy buckle propagation, collapse, and stability criteria were determined, and the results were used to select wall thicknesses for 8, 12, 16, and 20-inch nominal pipe diameters in water depths of 1000, 1500
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Shim, D. J., Gery Wilkowski, Mohammed Uddin, Sureshkumar Kalyanam, and P. Mincer. PR-276-094509-R01 Develop Fracture Initiation Criteria for High-Strength Steel Line Pipe Phase II. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010072.

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This report summarizes the major findings from a PRCI Project on developing fracture initiation criteria for axial flaws (both through-wall and surface flaws) in high-strength line-pipe materials. This work was originally done on the basis to see if improvements were needed for higher-grade steels, but interestingly there were several outcomes that affect predictions for all piping steels. One of the outcomes of this work is a new correlation between Charpy USE and J-R curve for high-strength materials. Although it is based on limited data, it was demonstrated that there is significant differe
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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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O. C. Bernardo, Felipe, Sebastião V. Canevarolo, and José A. C. G. Covas. Evaluation of temperature impact during extrusion on the mixing levels of PS/PA6 by optical monitoring. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.ex.2.

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This work uses on-line monitoring of turbidity to ascertain the temperature impact on the mixing performance of kneading blocks with different geometries. For this purpose, one of the barrel segments of the extruder was modified to incorporate four sampling devices and a slit die containing optical windows. The experiments consisted in reaching steady extrusion and then adding a small amount of tracer. Upon opening each sampling device, material was laterally detoured from the local screw channel and its turbidity were measured by the optical detector. Residence time distribution (RTD) curves
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Nestleroth. L52117 Dual Magnetization MFL for Enhanced Assessment of Corrosion Anomalies. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0010957.

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Magnetic flux leakage (MFL) is the most commonly used in-line inspection method for pipelines and will most likely remain the preferred technology for many decades. However, MFL does have its limitations on sizing corrosion anomalies. This work investigates an enhanced MFL implementation to improve assessment of corrosion anomalies. This implementation uses signals recorded at two magnetization levels: high levels typical of modern commercial MFL tools and low levels near the knee of the nonlinear magnetization curve. A method for combining signals from both field levels was developed, which c
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Mohanty, Subhasish, Bipul Barua, Joseph Listwan, Saurin Majumdar, and Ken Natesan. Final Report on CFD and Thermal-Mechanical Stress Analysis of PWR Surge Line under Transient Condition Thermal Stratification and an Evolutionary Cyclic Plasticity Based Transformative Fatigue Evaluation Approach without Using S~N Curve: Rev. 1. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1480513.

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Cabrera-Rodríguez, Wilmar Alexander, Daniela Rodríguez-Novoa, and Camilo Eduardo Sánchez-Quinto. A robust model for the term structure of interest rates: some applications in Colombia. Banco de la República, 2023. http://dx.doi.org/10.32468/be.1255.

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This document presents a Gaussian Affine Term Structure Model (GATSM) of the zero-coupon public debt curve issued locally by the Colombian Government, adopting the methodological approach of Hamilton and Wu (2012) to solve the problems of identification and instability in the estimation of this family of models. Two empirical exercises are presented to highlight the relevance of this methodological approach. The first combines the GATSM structure with a Bayesian Averaging of Classical Estimates (BACE) approach to forecast the yield curve given a set of macroeconomic variables, thus offering a
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