Relevant bibliographies by topics / Magnification Factors

Contents

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

Academic literature on the topic 'Magnification Factors'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Magnification Factors"

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Diego, J. M. "The Universe at extreme magnification." Astronomy & Astrophysics 625 (May 2019): A84. http://dx.doi.org/10.1051/0004-6361/201833670.

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Extreme magnifications of distant objects by factors of several thousand have recently become a reality. Small, very luminous compact objects, such as supernovae (SNe), giant stars at z = 1 − 2, Pop III stars at z > 7, and even gravitational waves (GWs) from merging binary black holes near caustics of gravitational lenses can be magnified many thousands or even tens of thousands of times thanks to their small size. We explore the probability of such extreme magnifications in a cosmological context and include the effect of microlenses near critical curves. We show how the presence of microlenses near the critical curve sets a limit on the maximum magnification. We use a combination of state of the art halo mass functions, high-resolution analytical models for the density profiles, and inverse ray tracing to estimate the probability of magnification near caustics. We estimate the rate of highly magnified events in the case of SNe, GWs, and very luminous stars including Pop III stars. Our findings reveal that future observations will increase the number of events at extreme magnifications, and will open the door not only to studying individual sources at cosmic distances, but also to constraining compact dark matter candidates.
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HUDA, WALTER, BARBARA G. STEINBACH, WILLIAM R. GEISER, and CLIFFORD J. BELDEN. "Optimal Technique Factors for Magnification Mammography." INVESTIGATIVE RADIOLOGY 32, no. 7 (July 1997): 378–81. http://dx.doi.org/10.1097/00004424-199707000-00002.

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Osten, Evariste F. "Binomial Attribute Sampling as an Aid in Defining a Representative Field of View in Microscopy." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 1 (August 12, 1990): 466–67. http://dx.doi.org/10.1017/s0424820100181087.

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Statistical analyses are routinely applied to microscope data from micrographs (measurements, shape factors) and, using electron microscopes, from x-ray microanalytical systems (net counts, peak ratios). However selection of a field of view which is recorded on a micrograph and implied to be a representative image of the bulk of the sample (at that magnification) is done intuitively. Experienced microscopists do consider a number of factors in selecting and preparing a sample and then choose from many instrument operating parameters before they view the sample. At this point assuming that the best microscopy practice has been exercised there is still the problem of a great number of fields of view to select from. High magnifications exacerbate this selection problem: in an Ultra High Resolution Field Emission Scanning Electron Microscope sharp images of routine samples are easily obtained at magnifications of X100,000 - at this magnification, even with a small sample size (4mm × 7mm), there are 28 million mutually exclusive fields of view.
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Xue, Bindang, Shaojie Zheng, and Wenfang Xue. "Multi-scale adaptive factors video acceleration magnification." Signal Processing: Image Communication 71 (February 2019): 36–44. http://dx.doi.org/10.1016/j.image.2018.10.010.

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Camasta, CA, J. Pontious, and RB Boyd. "Quantifying magnification in pedal radiographs." Journal of the American Podiatric Medical Association 81, no. 10 (October 1, 1991): 545–48. http://dx.doi.org/10.7547/87507315-81-10-545.

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Morphometric comparison between metatarsals on pedal radiographs and preserved bone specimens provides a method to quantify the amount of magnification imparted on a radiographic image. Conversion factors are presented for dorsoplantar and lateral projection images, which are of value in the preoperative assessment of patients. Factors that influence radiographic quality are discussed, with an emphasis on the geometry of projecting an accurate image.
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Potter, C. S., B. Carragher, D. Kriegman, and J. Pulokas. "Automated Very Low Magnification Imaging for TEM." Microscopy and Microanalysis 7, S2 (August 2001): 982–83. http://dx.doi.org/10.1017/s1431927600030981.

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A typical TEM specimen grid provides approximately a 2×2 mm area that is available for imaging. in order to identify and locate suitable targets on the grid the microscopist must usually inspect the grids at magnifications that allow for only a small area of the grid in the field of view at a time. Systematically searching the grid and mentally keeping track of relative locations presents a challenge for a microscopist especially as the image normally rotates as the magnification is changed. We present an automated technique that creates a very low magnification (VLM) image of the entire available imaging area on the grid. The VLM image can then be used as a reference map for searching the grid at high magnification.VLM images were obtained at a nominal magnification of 57x using a Philips CM200 TEM equipped with a Gatan CCD camera. The VLM image of the entire 2 mm specimen grid can be created using a mosaic of 49 images, each 512×512 pixels in size. The sampling distance between the images in the 7×7 array is 300μm and the pixel size is 680nm. The images are then automatically tiled and re-sampled to form a final VLM matrix of 4K×4K with a pixel size of 730nm. The resampling factors for the tiling operation include the scale and the relative angle between the camera and goniometer axes. These factors are determined automatically from a calibration process that characterizes the goniometer.
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Song, Peng Ran, and Chang Ming Wang. "Study for Quantitative Analysis of Loess Microstructure Influence." Advanced Materials Research 594-597 (November 2012): 522–26. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.522.

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Microstructure is a important index of soil physical, mechanical and engineering properties, SEM images and computer image processing technology make the soil microstructure research developing rapidly in recent years, but the researches on the influence factors and important degree are rare. Process the images form scanning electron microscopy test with the image processing toolbox of MATLAB. Fractal dimensions, porosities and pore size distributions are calculated in different analyzing windows, thresholds and magnifications. The results show that:1) As the results of the experiment influenced greatly by the smaller analyzing windows, in order to get the real calculation value, the medium section was processed; 2) Fractal dimension values are less influenced than porosities and pore size distributions by different thresholds; 3) Too big magnification can cause inaccurate fractal dimensions. Porosities and pore size distributions are inverse growing with increasing of magnification.
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Gil-Martín, Luisa María, Juan Francisco Carbonell-Márquez, Enrique Hernández-Montes, Mark Aschheim, and M. Pasadas-Fernández. "Dynamic magnification factors of SDOF oscillators under harmonic loading." Applied Mathematics Letters 25, no. 1 (January 2012): 38–42. http://dx.doi.org/10.1016/j.aml.2011.07.005.

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Fu, Qiang, Huajun Li, Hongqing Wang, Shuqing Wang, Dejiang Li, Qun Li, and Hui Fang. "Fatigue Magnification Factors of Arc-Soft-Toe Bracket Joints." Journal of Ocean University of China 17, no. 3 (May 9, 2018): 527–34. http://dx.doi.org/10.1007/s11802-018-3374-4.

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Low, Jun Fay, Tuti Ningseh Mohd Dom, and Safura Anita Baharin. "Magnification in endodontics: A review of its application and acceptance among dental practitioners." European Journal of Dentistry 12, no. 04 (October 2018): 610–16. http://dx.doi.org/10.4103/ejd.ejd_248_18.

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ABSTRACTThe application of magnification devices in endodontics is mainly meant for visual enhancement and improved ergonomics. This is crucial especially when long hours are spent in a narrow operating space to treat obscure microanatomy. Nevertheless, application of magnification in endodontics has yet to be introduced into the mainstream practice due to various influences in behavioral patterns. By conducting an extensive literature search in the PubMed database, this narrative review paper depicts the present state of magnification devices, their applications within the endodontic practice, factors that influence their usage, the advantages, and shortcomings, as well as the significances of magnification in the field of endodontics. This review paper will encourage clinicians to employ magnification in their practice for improved outcome.
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Dissertations / Theses on the topic "Magnification Factors"

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Neupane, Bibek. "EFFECTS OF ASYMMETRICAL LIVE LOADS ON SIDESWAYS AND MOMENT AMPLIFICATION FACTORS OF STEEL MOMENT FRAME CONSIDERING P-DELTA INTERACTION." OpenSIUC, 2016. https://opensiuc.lib.siu.edu/theses/1860.

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The P-delta effect, which is a second order effect, is experienced by a structure mostly when the structure is subjected to lateral forces like earthquake and wind. In addition to earthquake and wind loads, when the structure is subjected to various live load patterns other than symmetrical loading, the structure experiences side sway or lateral translation. In this thesis, P-delta effects due to symmetrical and asymmetrical live loads is studied on a three-bay, two-story steel moment frame. The main objective of this research is to investigate P-delta effects on the column which is subjected to critical load case. The effect is analyzed based on the value of the moment magnification factor, B2. Besides, the story drift due to asymmetrical loading is also investigated. For the purpose of this study, “Approximate Second-Order Analysis” specified in “Appendix 8” of AISC Steel Construction Manual (AISC 2011) is used to amplify the first order effects to account for the second-order effects in the steel moment frame. Additionally, computer software is used to calculate the first order moments and axial forces.
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Montevecchi, Michele. "La risposta torsionale non lineare di strutture asimmetriche in pianta." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8547/.

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Il lavoro principale di questa tesi è stato quello di fornire gli spettri di particolari coefficienti, detti Magnification Factors, da utilizzare in associazione con gli spettri degli spostamenti già forniti dalla normativa quando si ha a che fare con strutture eccentriche a 3 gradi di libertà per ricavare una prima stima di alcuni punti notevoli di tali strutture (spostamenti longitudinali del centro di massa, del lato flessibile e del lato rigido). In particolare tali Magnification Factors, che dipendono esclusivamente da parametri fisici della struttura (i.e. Ωθ, ξ, e, TL, R), vanno moltiplicati per il valore di spostamento spettrale ricavato dalla normativa entrando nello spettro degli spostamenti con il periodo longitudinale disaccoppiato (TL) della struttura. Il risultato di questo prodotto è lo spostamento longitudinale del punto notevole della struttura eccentrica cui ogni Magnification Factors si riferisce. Gli spettri dei Magnification Factors sono stati ricavati attraverso l’integrazione diretta dell’equazione del moto del sistema dinamico ad 1 piano a 3 gradi di libertà.
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Supuk, Elvira. "Dizziness and falls rate changes after routine cataract surgery and the influence of visual and refractive factors." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/14422.

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Purpose: To determine whether symptoms of dizziness and fall rates change due to routine cataract surgery and to determine the influence of visual and refractive factors on these common problems in older adults. Methods: Self-reported dizziness and falls were determined in 287 subjects (mean age of 76.5±6.3 years, 55% females) before and after routine cataract surgery for the first (81, 28%), second (109, 38%) and both eyes (97, 34%). Six-month falls rates were determined using self-reported retrospective data. Dizziness was determined using the short-form of the Dizziness Handicap Inventory. Results: The number of patients with dizziness reduced significantly after cataract surgery (52% vs. 38%; χ2 = 19.14 , p < 0.001), but the reduction in number of patients who fell in the 6-months post surgery was not significant (23% vs. 20%; χ2= 0.87, p=0.35). Multivariate logistic regression analyses found significant links between post-operative falls and change in spectacle type (increased risk if switched into multifocal spectacles). Post-operative dizziness was associated with changes in best eye visual acuity and changes in oblique astigmatic correction. Conclusions: Dizziness is significantly reduced by cataract surgery and this is linked with improvements in best eye visual acuity, although changes in oblique astigmatic correction increased dizziness. The lack of improvement in falls rate may be associated with switching into multifocal spectacle wear after surgery.
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Parker, Walter P. "Proposed New Military Live Load for Highway Bridges in the United States." ScholarWorks@UNO, 2019. https://scholarworks.uno.edu/td/2631.

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This thesis presents the results of a mathematical analysis of various live load combinations on highway bridge spans up to 304.8 meters (1,000 feet) total lengths. The analysis included continuous beams, but only the results for simple beams is presented. The analysis was performed using an independently developed Microsoft EXCEL spreadsheet computation, based on superposition and classical mechanics. In this thesis, several actual bridge live loadings and several hypothetical live loadings were analyzed and compared to the American Association of State Highway and Transportation Officials Load and Resistance Factor Design method. Also considered was the new bridge design method adopted by the Louisiana Department of Transportation in March 2015. The evolution of bridge design loads is discussed, and the concept of the Military Load Classification is introduced and adapted to the bridge design analysis. The results of the analysis are presented, compared and interpreted for use in future bridge design.
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Simonpietri, Sean. "Influence of the LRFD moment magnification procedure on unbraced frames in short buildings." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09122009-040427/.

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Yu, Tsung-his, and 游宗熹. "Study On Nonlinear Dynamic Magnification Factors of Three-Dimensional Inclined Cables." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/4999cs.

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碩士
國立臺灣科技大學
營建工程系
95
Long-span cable-stayed bridges are the highly flexible structure. Cables usually exhibit geometrically nonlinear behavior under large deformation.This study adopts Three-Dimensional elastic catenary inclined cable elements in the finite element formulation of an inclined cable to simulate its initial mode shape,nonlinear static behavior and nonlinear dynamic behavior. This study analyses three kinds of cable resonance. This study observes relation of dynamic magnification factor and frequency ratio and relation of transmissibility and frequency ratio.
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Nassim, Marouane. "Organisation rétinotopique des structures visuelles révélée par imagerie optique cérébrale chez le rat normal." Thèse, 2008. http://hdl.handle.net/1866/8252.

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Book chapters on the topic "Magnification Factors"

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Zerefos, C. S., A. F. Bais, and I. C. Ziomas. "Monochromatic UV-Magnification Factors and Total Ozone." In Atmospheric Ozone, 686–90. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5313-0_135.

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Picanço-Diniz, Cristovam W., Luiz Carlos L. Silveira, and Eduardo Oswaldo-Cruz. "A Comparative Survey of Magnification Factor in V1 and Retinal Ganglion Cell Topography of Lateral-Eyed Mammals." In The Visual System from Genesis to Maturity, 187–98. Boston, MA: Birkhäuser Boston, 1992. http://dx.doi.org/10.1007/978-1-4899-6726-8_14.

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Messing, B., and H. Gänshirt. "The Role of the Magnification Factor in the Recovery Process of Visual Field Defects After Retrogeniculate Lesions." In From Neuron to Action, 549–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-662-02601-4_69.

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Sharma, Mukta, Rahul Verma, Ambuj Mishra, and Mahua Bhattacharya. "A Novel Approach to Classify Breast Cancer Tumors Using Deep Learning Approach and Resulting Most Accurate Magnification Factor." In Studies in Computational Intelligence, 185–201. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6844-2_13.

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Plumbley, M. D. "Information Density and Cortical Magnification Factors." In Information Theory and the Brain, 305–17. Cambridge University Press, 2000. http://dx.doi.org/10.1017/cbo9780511665516.022.

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Hsiao, J. Kent. "SIDESWAY MAGNIFICATION FACTORS FOR STEEL MOMENT FRAMES WITH VARIOUS TYPES OF COLUMN BASES." In Volume 10 Number 3, 274–88. The Hong Kong Institute of Steel Construction, 2014. http://dx.doi.org/10.18057/ijasc.2014.10.3.2.

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Rani, Roopa, Prem Kishore Patnala, and Vinayak V. Pathak. "Prospects of Pesticide Contamination and Control Measures in Aquatic Systems." In Advances in Environmental Engineering and Green Technologies, 369–86. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-6111-8.ch020.

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In this chapter, up-to-date knowledge on extenuation strategies to diminish pesticide accumulation in aquatic systems, which has remained a major concern for ground water as well as surface water, adversely affecting aquatic ecosystems and humans through bio-magnification, are included. Several factors affect the toxicity of pesticides like dosage of concentration, relative toxicity, and chemical interactions. The best approach to decrease pesticide pollution in environment is to use safer, non-chemical control methods, and industrial or sewage superfluous should not be dumped into water reservoirs without proper pretreatment. Biological and chemical methods used for the control measures of pesticides pollution in aquatic systems. Thus, a greener approach for remedy of pesticide-contaminated aquatic system could be more cost-effective and sustainable.
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Woodruff, Todd E. "Optic Nerve Examination." In Glaucoma. Oxford University Press, 2012. http://dx.doi.org/10.1093/oso/9780199757084.003.0009.

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•Small field of view but increased magnification •Significant degradation of the view from media opacities or small pupil •Lacks ability to perform stereoscopic examination •Useful when slit-lamp exam not possible •Most commonly used system •Variable magnification and field of view • Reasonable view through small pupil • Good stereoscopic view •Less degradation of view from media opacities than direct ophthalmoscope •The magnification and stereopsis obtained with a slit-lamp system is generally superior to that of a handheld or headlamp-based system. • Poor magnification, with wide field of view •Least degradation of view from media opacities •Value of stereopsis limited by poor magnification Fair to poor with small pupils •May be useful for bedside exam or in the operating room • The vertical diameter of the optic nerve can be easily estimated during a slit-lamp exam by the following method: 1. A thin slit beam is focused on the nerve through the lens of choice. 2. The vertical length of the beam is adjusted to match the height of the disc. 3. The length of the beam is read off the slit-lamp beam scale. 4. The scale reading is adjusted by the correction factor of the specific lens. •This estimation is reasonably accurate, but it tends to underestimate disc size in high levels of myopia, and overestimate in high hyperopia. • One can also use the scale projection of the direct ophthalmoscope to estimate nerve head size, with no correction factor needed. The small light cone of the direct ophthalmoscope subtends an angle of about 5 degrees, about the same size as an average optic disc, and can give a quick estimate of relative size. • Stereo-photographs are the most helpful but are more difficult to obtain in a reproducible manner. •Cameras with a prism-based fixed-angle method of taking simultaneous stereo-photos tend to produce more consistent results, but are more expensive. • While non-mydriatic cameras exist, images suffer when the pupil is smaller than 4 mm, and dilation is commonly employed to obtain the best images.
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Penrose, Roger, and Martin Gardner. "Mathematics and Reality." In The Emperor's New Mind. Oxford University Press, 1989. http://dx.doi.org/10.1093/oso/9780198519737.003.0011.

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Let us imagine that we have been travelling on a great journey to some far-off world. We shall call this world Tor’Bled-Nam. Our remote sensing device has picked up a signal which is now displayed on a screen in front of us. The image comes into focus and we see (Fig. 3.1): What can it be? Is it some strange-looking insect? Perhaps, instead, it is a dark-coloured lake, with many mountain streams entering it. Or could it be some vast and oddly shaped alien city, with roads going off in various directions to small towns and villages nearby? Maybe it is an island - and then let us try to find whether there is a nearby continent with which it is associated. This we can do by ‘backing away’, reducing the magnification of our sensing device by a linear factor of about fifteen. Lo and behold, the entire world springs into view (Fig. 3.2): Our ‘island’ is seen as a small dot indicated below ‘Fig. 3.1’ in Fig. 3.2. The filaments (streams, roads, bridges?), from the original island all come to an end, with the exception of the one attached at the inside of its right-hand crevice, which finally joins on to the very much larger object that we see depicted in Fig. 3.2. This larger object is clearly similar to the island that we saw first - though it is not precisely the same. If we focus more closely on what appears to be this object’s coastline we see innumerable protuberances - roundish, but themselves possessing similar protuberances of their own. Each small protuberance seems to be attached to a larger one at some minute place, producing many warts upon warts. As the picture becomes clearer, we see myriads of tiny filaments emanating from the structure. The filaments themselves are forked at various places and often meander wildly. At certain spots on the filaments we seem to see little knots of complication which our sensing device, with its present magnification, cannot resolve. Clearly the object is no actual island or continent, nor a landscape of any kind.
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Niraula, A., M. Rautiainen, A. Niemelä, I. Lillemäe-Avi, and H. Remes. "Influence of weld-induced distortions on the stress magnification factor of a thin laser-hybrid welded ship deck panel." In Trends in the Analysis and Design of Marine Structures, 423–32. CRC Press, 2019. http://dx.doi.org/10.1201/9780429298875-49.

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Conference papers on the topic "Magnification Factors"

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Bishop, C. M. "Magnification factors for the GTM algorithm." In Fifth International Conference on Artificial Neural Networks. IEE, 1997. http://dx.doi.org/10.1049/cp:19970703.

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Pelletier, Stephane, and Jeremy R. Cooperstock. "Fast Super-Resolution for Rational Magnification Factors." In 2007 IEEE International Conference on Image Processing. IEEE, 2007. http://dx.doi.org/10.1109/icip.2007.4379093.

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Maus, Natalie, Dalton Rutledge, Sedeeq Al-Khazraji, Reynold Bailey, Cecilia Ovesdotter Alm, and Kristen Shinohara. "Gaze-guided Magnification for Individuals with Vision Impairments." In CHI '20: CHI Conference on Human Factors in Computing Systems. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3334480.3382995.

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Mancini, Federica, Heikki Remes, and Jani Romanoff. "A Stress Magnification Factor for Plates With Welding-Induced Curvatures." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18094.

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Abstract The fatigue strength of thin-walled structures can be reduced significantly by non-linear secondary bending effects resulting from geometrical imperfections such as axial and angular misalignments. The welding-induced distortions can cause a critical increase of the structural hot-spot stress in the vicinity of the weld. Traditionally, the classification society rules for the fatigue strength assessment of welded ship structures suggest an analytical formula for a stress magnification factor km for axial and angular misalignment under axial loading condition. Recently, the well-known analytical solution for the angular misalignment has been extended to account for the curvature effect. The present paper analyses the effect of non-ideal, intermediate boundary conditions between fixed and pinned ends. In this regard, the fixity factors ρ (with 0 ≤ ρ ≤ 1 from ideally pinned to clamped conditions) are introduced in order to model the actual constraint on the rotation close to the ends. Under tension, a non-negligible decrease of the km factor is observed in relation to the reduction of the fixity factor at the welded end, while the fixity factor related to the loaded end has a minor effect on the km factor. Under compression, the reduction of the beam end fixity factors results into lower buckling resistance.
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Gianniotis, Nikolaos. "Interpretable magnification factors for topographic maps of high dimensional and structured data." In 2013 IEEE Symposium on Computational Intelligence and Data Mining (CIDM). IEEE, 2013. http://dx.doi.org/10.1109/cidm.2013.6597242.

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Hoh, Hsin Jen, John H. L. Pang, and Kin Shun Tsang. "Fatigue Modelling of Semi-Elliptical Surface Cracks in Welded Pipe Geometries." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54683.

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Offshore pipelines and risers transfer oil and gas across long distances, from seabed to production facility to the surface. The long pipelines are formed by welding together pipe segments. The welded joints formed are a source of stress concentration and defects from which fatigue cracks can grow. Hence, it is imperative that the effect of the weld geometry on the stress concentration be understood so that appropriate measures can be taken to assess the potential remaining service life of the welded structure. The effects can be understood by the linear elastic fracture mechanics approach, where the stress intensity factors quantify the stress concentration. While the classical equations of Newman and Raju have been long available for semi-elliptical surface cracks in plates, no similarly elegant stress intensity factor solutions are available for pipes. There have been solutions in tabular form which can be cumbersome in practice. Moreover, solutions of welded pipe geometries have not been developed. The objectives of the current work are to develop closed-form solutions for stress intensity factors for external semi-elliptical surface cracks in plates. The welded pipe geometry will also be studied to develop solutions for the weld toe magnification factors of welded pipe geometries. The stress intensity factors can be used to determine the propagation rate of cracks in pipe or welded pipe geometries. The stress intensity factors are obtained by the J-integral output of the three-dimensional finite element method. First, a plate with a circular crack is modelled. The initial step transforms the model to a plate with a semi-elliptical crack with the appropriate crack aspect ratio and width. A second transformation follows to transform the geometry to pipe form. The main parameters studied are the relative crack depth to thickness, crack aspect ratio, radius and thickness. The developed stress intensity factor solutions can be reduced to the classical equations. The new solutions show good agreement compared to previous work. A similar approach is developed to study the welded pipe geometry to develop weld toe magnification factor solutions. The weld toe magnification factor solutions for certain geometries are presented as a function of the relative crack depth. The stress intensity factor solutions are then applied to predict the crack growth rates of cracks in pipe geometries. The prediction was conducted by a program written to assess the fatigue life of single and multiple cracks in pipes and welded pipes. The fatigue life assessment of welded pipes using the weld toe magnification factor solutions shows how significantly the weld geometry affects fatigue life.
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Bartelt, Perry, Othmar Buser, Marc Christen, and Andrin Caviezel. "DYNAMIC MAGNIFICATION FACTORS FOR SNOW AVALANCHE IMPACT (WITH PILE-UP) ON WALLS AND PYLONS." In 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2019. http://dx.doi.org/10.7712/120119.7234.20047.

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Yamatoki, Shuichi, Yoshitaka Hamamoto, and Koji Gotoh. "Evaluation of the Stress Magnification Factor in Angled Discontinuities of Longitudinal Stiffeners." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24611.

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In ship hull design, longitudinal stiffeners may be twisted or knuckled to keep the continuity of strength along the vessel. This occurs at angled discontinuities such as discontinuous connections at the transverse web between two longitudinal stiffeners having different angles, e.g., a side shell longitudinal stiffener in the rounded part of the ship’s hull. Although the criteria for selection of “twist”, “knuckle”, or “angled discontinuity” as it is should be strength criteria, there are no generalized criteria or published systematic studies, and ship hull designers usually depend on experimental rules. In this study we evaluate and compare the stress magnification factors and define the relative ratio between the stresses in the discontinuity and continuity structures by using finite element analysis from a strength-of-materials point of view. Our results show that under lateral load conditions the stress factor is larger in the twist structure than in the angled discontinuity structure, although under axial load conditions the stress factor in the knuckle and angle discontinuity structures is larger than in the twist structure. Additionally, we propose a formula that estimates the factor in the knuckle structure based on the strength-of-materials approach.
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9

Li, Guixi, Rujian Ma, and Xiaobing Luo. "Parameter Optimization of Vibration Control System in Multiple DOF Structures." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79096.

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The parameter optimization and optimal vibration control effects of the multiple tuned mass damper system are studied in this paper by establishing the dynamic model of the multi-mode control of the multi-degree-of-freedom structure and vibration control system. The transfer functions and dynamic magnification factors of the multi-mode control of the multi-degrees-of-freedom structure and vibration control system are derived at first. Then parameter optimization study of the vibration control system was performed, where the minimum of the dynamic magnification factor is used as the optimal objective. Furthermore, the optimal vibration control effects of single mode control and multi-mode control are studied. The application examples are finally given and indicated that this method has the characteristics of better suitability and high accurate.
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10

Babu, Tina, Tripty Singh, Deepa Gupta, and Shahin Hameed. "Colon Cancer Detection in Biopsy Images for Indian Population at Different Magnification Factors Using Texture Features." In 2017 Ninth International Conference on Advanced Computing (ICoAC). IEEE, 2017. http://dx.doi.org/10.1109/icoac.2017.8441173.

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