Academic literature on the topic 'Isolated vertices'

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Journal articles on the topic "Isolated vertices"

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Chitra, P. Jeya Bala, and S. Arumugam. "Resolving Sets without Isolated Vertices." Procedia Computer Science 74 (2015): 38–42. http://dx.doi.org/10.1016/j.procs.2015.12.072.

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Enomoto, H. "Graph Decompositions without Isolated Vertices." Journal of Combinatorial Theory, Series B 63, no. 1 (1995): 111–24. http://dx.doi.org/10.1006/jctb.1995.1007.

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Dr., B. Ramireddy, Mohan Chand U., Sri Krishna Chaitanya A., and Sri Krishna Chaitanya A. "APPLICATIONS OF EDGE COLORING OF GRAPHS WITH RAINBOW NUMBERS PHENOMENA." International Journal of Research – Granthaalayah 3, no. 12 (2017): 163–70. https://doi.org/10.5281/zenodo.848967.

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This paper studies the Rainbow Ramsety Number for a non empty graph and the main results are 1. The Rainbow Ramsety Number of a graph F with out isolated vertices is defined if and only if F is a forest. 2. The Rainbow Ramsety Number of two graphs F1 and F2 with out isolated vertices is defined if and only if F1 is a star or F2 is a forest..
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ENOMOTO, Hikoe, and Shinsuke MATSUNAGA. "Graph decompositions without isolated vertices II." Journal of the Mathematical Society of Japan 49, no. 1 (1997): 161–80. http://dx.doi.org/10.2969/jmsj/04910161.

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Enomoto, Hikoe, and Shinsuke Matsunaga. "Graph decompositions without isolated vertices III." Journal of Graph Theory 24, no. 2 (1997): 155–64. http://dx.doi.org/10.1002/(sici)1097-0118(199702)24:2<155::aid-jgt3>3.0.co;2-p.

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Shang, Yilun. "On the Isolated Vertices and Connectivity in Random Intersection Graphs." International Journal of Combinatorics 2011 (May 30, 2011): 1–9. http://dx.doi.org/10.1155/2011/872703.

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We study isolated vertices and connectivity in the random intersection graph . A Poisson convergence for the number of isolated vertices is determined at the threshold for absence of isolated vertices, which is equivalent to the threshold for connectivity. When and , we give the asymptotic probability of connectivity at the threshold for connectivity. Analogous results are well known in Erdős-Rényi random graphs.
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Rajkhowa, Kukil Kalpa, and Helen K. Saikia. "Pendant and isolated vertices of comaximal graphs of modules." Boletim da Sociedade Paranaense de Matemática 41 (December 23, 2022): 1–8. http://dx.doi.org/10.5269/bspm.51488.

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A comaximal graph Γ(M) is an undirected graph with vertex set as the collection of all submodules of a module M and any two vertices A and B are adjacent if and only if A + B = M. We discuss characteristics of pendant vertices in Γ(M). We also observe features of isolated vertices in a special spanning subgraph in Γ(M).
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Chiba, Shuya, and Shinya Fujita. "Covering vertices by a specified number of disjoint cycles, edges and isolated vertices." Discrete Mathematics 313, no. 3 (2013): 269–77. http://dx.doi.org/10.1016/j.disc.2012.10.010.

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Rozario, J. Gerard, and J. Jon Arockiaraj. "Sum Labeling for Some Star and Cycle Related Special Graphs." Mapana - Journal of Sciences 11, no. 4 (2012): 77–90. http://dx.doi.org/10.12723/mjs.23.6.

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A sum labeling is a mapping from the vertices of G into the positive integers such that, for any two vertices u, v V (G) with labels (u) and (v), respectively, (uv) is an edge iff (u) + (v) is the label of another vertex in V (G). Any graph supporting such a labeling is called a sum graph. It is necessary to add (as a disjoint union) a component to sum label a graph. This disconnected component is a set of isolated vertices known as isolates and the labeling scheme that requires the fewest isolates is termed optimal. The number of isolates required for a graph to support a sum labeling is know
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Penrose, Mathew D. "Inhomogeneous random graphs, isolated vertices, and Poisson approximation." Journal of Applied Probability 55, no. 1 (2018): 112–36. http://dx.doi.org/10.1017/jpr.2018.9.

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Abstract Consider a graph on randomly scattered points in an arbitrary space, with any two points x, y connected with probability ϕ(x, y). Suppose the number of points is large but the mean number of isolated points is O(1). We give general criteria for the latter to be approximately Poisson distributed. More generally, we consider the number of vertices of fixed degree, the number of components of fixed order, and the number of edges. We use a general result on Poisson approximation by Stein's method for a set of points selected from a Poisson point process. This method also gives a good Pois
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Dissertations / Theses on the topic "Isolated vertices"

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Reyhanogullari, Naim Eser. "Vertical Ground Motion Influence On Seismically Isolated &amp." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611785/index.pdf.

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In this study influences of vertical ground motion on seismically isolated bridges were investigated for seven different earthquake data. One assessment of bearing effect involves the calculation of vertical earthquake load on the seismically isolated bridges. This paper investigates the influence of vertical earthquake excitation on the response of briefly steel girder composite bridges (SCB) with and without seismic isolation through specifically selected earthquakes. In detail, the bridge is composed of 30m long three spans, concrete double piers at each axis supported by mat foundations wi
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Stelmaszek, Grzegorz. "Effect of the Vertical Component of Acceleration on Base - Isolated Structures." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/707.

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Base isolation has been widely used to reduce the risk caused by horizontal ground motion during an earthquake. Base isolation works well to reduce the risk of a seismic event because it increases the structures natural period of vibration thus reducing the horizontal acceleration transmitted to the structure. However, research conducted in recent years showed that it is also important to include the vertical component of acceleration when designing base isolated structures. Therefore, the purpose of this thesis is to investigate the effect that the vertical component of acceleration has on
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Pan, Peng. "Safety and functionality of base-isolated building structures subjected to vertical ground motions." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/145351.

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Furukawa, Sachi. "Performance of Structures and Equipment in Base-Isolated Medical Facilities Subjected to Severe Earthquake Motions." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/151971.

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Bui, Thi Thanh Huyen. "Terminaisons verticales de jonction remplies avec des couches diélectriques isolantes pour des application haute tension utilisant des composants grand-gap de forte puissance." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI061/document.

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Le développement de l’énergie renouvelable loin des zones urbaines demande le transport d'une grande quantité d’énergie sur de longues distances. Le transport d’électricité en courant continu haute tension (HVDC) présente beaucoup d’avantages par rapport à celui en courant alternatif. Dans ce contexte il est nécessaire de développer des convertisseurs de puissance constitués par des composants électroniques très haute tension, 10 à 30 kV. Si les composants en silicium ne peuvent pas atteindre ces objectifs, le carbure de silicium (SiC) se positionne comme un matériau semiconducteur alternatif
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Cheng-ChianLin and 林承謙. "The Crossing Number of Join Product of kth Power of Path with Isolated Vertices and Path." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/61329588058956352075.

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碩士<br>國立成功大學<br>資訊工程學系<br>104<br>A graph G is said to have a crossing if two edges of G share an interior point. The minimum crossing number of G is denoted by cr(G). The crossing number problem is to find the minimum crossing solution of a graph, and it can be used in applications of circuit layout. Although the crossing numbers of join product graphs have been extensively studied, the crossing number of join product of power graphs with path is relatively unexplored. Let P_m and P_n be paths with m and n vertices, and D_n be a graph consisting of n isolated vertices. In this thesis, we inves
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Chowdhury, Usman. "Cutting rules for Feynman diagrams at finite temperature." 2010. http://hdl.handle.net/1993/3856.

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The imaginary part of the retarded self energy is of particular interest as it contains a lot of physical information about particle interactions. In higher order loop diagrams the calculation become extremely tedious and if we have to do the same at finite temperature, it includes an extra dimension to the difficulty. In such a condition we require to switch between bases and select the best basis for a particular diagram. We have shown in our calculation that in higher order loop diagrams, at #12;finite temperature, the R/A basis is most convenient on summing over the internal vertices and v
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Fung-WenKuo and 郭鳳文. "Vertical Earthquake Response Analysis of General and Base-isolated Buildings." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/83569588014908030148.

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碩士<br>國立成功大學<br>建築學系碩博士班<br>101<br>Despite there are many researches on how horizontal acceleration affects general buildings now, we are still lack of knowledge on the effects of vertical acceleration on buildings. Since current buildings still cannot prevent earthquake disaster thoroughly, we decide to study the vertical acceleration effects on buildings. Base-isolated systems have been proven effective to reduce lost from earthquakes in countries such as America, Japan and so on, yet this system is also lack of researches on effects of vertical acceleration. Therefore, in our research, we c
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Chen, Jiu-Pin, and 陳瑞濱. "Molecular evolution and vertical transmission of Newcastle disease virus isolated in Taiwan." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/05208733867772116069.

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碩士<br>國立臺灣大學<br>獸醫學研究所<br>89<br>Newcastle disease (ND) occurred frequently in poultry throughout Taiwan during 1998-2000. Some outbreaks occurred in broilers about 2 weeks old, which were younger than usual. Thus, vetrical transmission of NDV was suspected. In order to investigate the epidemiology, the relationships of the gene among ND isolates were analysed. The study of the possibility of the vertical transmission of Newcastle disease virus (NDV) was preceeded simultaneously. In the relationships of molecular evolution among ND isolates, twenty-three isolates of NDV isolated during 1998-200
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Fang, Yen-chen, and 方嬿甄. "Analysis and Design of Polynomial Friction Pendulum Isolator with Vertical Effect." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/67541361067605776815.

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碩士<br>國立中央大學<br>土木工程研究所<br>99<br>The sliding surface of Polynomial Friction Pendulum Isolator (PFPI) is defined by a sixth-order polynomial function. The restoring force possesses a softening section and a hardening section. In the softening section, the restoring stiffness is decreasing in order to mitigate the structural acceleration response, while in the hardening section, the restoring stiffness is increasing so as to reduce the isolator drift. It has been proven that PFPI is not only able to effectively mitigate the structural seismic response induced by either long period near-fault ear
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Book chapters on the topic "Isolated vertices"

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Godehardt, Erhard, Jerzy Jaworski, and Katarzyna Rybarczyk. "Isolated Vertices in Random Intersection Graphs." In Advances in Data Analysis, Data Handling and Business Intelligence. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01044-6_12.

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Boyar, Joan, and Christian Kudahl. "Adding Isolated Vertices Makes Some Online Algorithms Optimal." In Lecture Notes in Computer Science. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29516-9_6.

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Némethi, András, and Ágnes Szilárd. "Vertical/Horizontal Monodromies." In Milnor Fiber Boundary of a Non-isolated Surface Singularity. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23647-1_13.

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Shid, G., and M. R. Shiravand. "Analysis of Friction-Based Isolated Pier Response Under Vertical Dynamic Load." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-90690-9_8.

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Bhardwaj, Shivam, Aswath Suresh, Ragini Arora, et al. "Isolated Bio-Regenerative System for Vertical Farming Through Robots in Space Explorations." In Robot Intelligence Technology and Applications 5. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78452-6_21.

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Mochida, Yusuke, Naohiro Kida, and Sinniah Ilanko. "Base Isolator of Vertical Seismic Vibration Using a Negative Stiffness Mechanism." In Mechanisms and Machine Science. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09918-7_99.

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Hemion, Geoffrey. "Fundamental solutions." In The Classification of Knots and 3-Dimensional Spaces. Oxford University PressOxford, 1993. http://dx.doi.org/10.1093/oso/9780198596974.003.0009.

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Abstract We can apply this result in the theory of Diophantine inequalities to the basic plan for classifying Haken manifolds. Remember that the 3-manifold M consists of tetrahedrons—that is, a set of sets of four vertices. Furthermore, any normal surface consists of squares and triangles in the tetrahedrons. It is easy to see that any arbitrary normal surface can be completely specified by simply supplying a list of squares and triangles. But as far as the computer is concerned, a square is given by specifying which tetrahedrons Δ we are to take, and then specifying the way the square splits
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Barbour, A. D., Lars Holst, and Svante Janson. "Random graphs." In Poisson Approximation. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198522355.003.0005.

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Abstract In this chapter, we indicate how the general results of Chapter 2 can be used in problems involving random graphs. In Section 5.1 we consider the number of copies of a small graph G contained in Kn,p. Three cases are distinguished, counting all copies of G, induced copies of G and isolated copies of G, illustrating different ways of applying the basic Stein–Chen method. Counts of the numbers of vertices of specified degrees are considered in Section 5.2. It proves advantageous at times, when counting the vertices of degree m form large, to introduce couplings which are rather more com
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Shrimpton, Antony E., and E. Mark Levinsohn. "HOXD10 and Congenital Vertical Talus." In Inborn Errors Of Development. Oxford University PressNew York, NY, 2008. http://dx.doi.org/10.1093/oso/9780195306910.003.0071.

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Abstract Congenital vertical talus (CVT), also known as “rocker bottom foot” deformity, is a dislocation of the talonavicular joint, with rigid dorsal dislocation of the navicular over the neck of the talus. This dislocation results in a characteristic radiographic vertical orientation of the talus. This condition is usually associated with multiple other congenital deformities (e.g., myelomeningocoele neuromuscular syndromes, and aneuploidies) and only rarely as an isolated deformity (Hamanishi, 1984). An identical mutation, a recurrent missense mutation (M319K; 956T&amp;gt;A) in the HOXD10 t
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Rankey, Eugene C., Georg Warrlich, Erwin Adams, Kim P. Jakobsen, and James Teoh. "Modern Carbonate Systems of Southeast Asia: Developing Insights for Understanding Subsurface Carbonate Reservoirs in Southeast Asia." In Cenozoic Isolated Carbonate Platforms—Focus Southeast Asia. SEPM (Society for Sedimentary Geology), 2023. http://dx.doi.org/10.2110/sepmsp.114.16.

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Isolated carbonate platforms are abundant and widespread in Cenozoic strata and in the present-day oceans of Southeast Asia. The purposes of this article are (1) to describe the basic oceanographic setting of present-day Southeast Asia oceans; (2) to synthesize, compare, and contrast observations of the character of extant platforms in the context of fundamental oceanographic controls; and (3) to leverage these insights to develop a more complete understanding of older isolated platforms, especially the Miocene systems of Central Luconia. The data, presented to mimic an offshore-to-nearshore t
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Conference papers on the topic "Isolated vertices"

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Schmaus, Joseph, and Inderjit Chopra. "Performance and Loads of a Model Coaxial Rotor Part II: Prediction Validations with Measurements." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11439.

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The predictions of an upgraded UMARC comprehensive analysis are compared to experimental coaxial rotor results. The experiments cover a range of collective pitch angles (θ°) from 2° to 10°, advance ratios (μ) from 0:2 to 0:5, and lift offset from 0% to 20%. The experimental rotor system is a hingeless rotor with a first flap frequency of approximately 1:6=rev and was tested in the Glenn L. Martin Wind Tunnel at the University of Maryland first as an isolated rotor and then as a counter-rotating coaxial rotor system. The analysis is validated against measured isolated rotor performance and coax
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Bi, Naipei, Anish Sydney, Kevin Kimmel, and David Haas. "Experimental Investigation of Fan Aerodynamic Performance for Fan-In-Wing Applications." In Vertical Flight Society 71st Annual Forum & Technology Display. The Vertical Flight Society, 2015. http://dx.doi.org/10.4050/f-0071-2015-10505.

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The aerodynamic performance of a series of generic isolated fan configurations are experimentally investigated in the Naval Surface Warfare Center Carderock Division (NSWCCD) 8-by-10 foot Subsonic Wind Tunnel. The goal of this work is to develop a benchmark dataset that can enhance the fundamental understanding of the fluid dynamic interactions between a generic fan and wing for Fan-In-Wing (FIW) and embedded fan configurations These configurations have significant applications for aircraft as well as underwater systems. The research is performed in three phases; isolated fans in hover flow co
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Sharma, Abhinav, Jeffrey Keller, and Glen Whitehouse. "A Fundamental Investigation of Ship Airwake Influence on Rotorcraft." In Vertical Flight Society 80th Annual Forum & Technology Display. The Vertical Flight Society, 2024. http://dx.doi.org/10.4050/f-0080-2024-1212.

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Rotorcraft responses to idealized disturbances are examined to gain insights into model fidelity requirements for flight simulations of the ship-rotorcraft dynamic interface. Two disturbance fields are considered: an isolated straight vortex that represents the canonical vortex that results from the corners of flat top ships in oblique wind-over-deck conditions and a horseshoe vortex derived from a nondimensional characterization of the time-averaged flow observed aft of a simplified ship superstructure. Rotorcraft models considered include: an analytical blade element theory-based rotor model
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Staruk, William, Sean Patrick Kelley, Jeremy Bain, et al. "Overview of Wind Tunnel Testing of the Joby Aviation eVTOL Isolated Propeller System." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-392.

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In 2023, Joby Aviation conducted a test of a prototype propeller for an electric vertical takeoff and landing (eVTOL) tilt-propeller aircraft in the 40- by 80-Foot Wind Tunnel at the National Full-Scale Aerodynamics Complex (NFAC). The propeller differed from rotors found on typical helicopters and tiltrotors in having rigid blades and no cyclic pitch variation, and from airplane propellers in operating in an edgewise flow environment. This wind tunnel test was intended to study the behavior of the propeller in the transition regime experienced during conversion from thrust-borne, through semi
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Cameron, Christopher, Roland Feil, Jayant Sirohi, and Jurgen Rauleder. "Measurement of Transient Loads and Blade Deformation in a Coaxial Counter-Rotating Rotor." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12063.

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A model-scale, coaxial, counter-rotating rotor system with single-bladed rotors was tested in hover and compared to a comprehensive model developed in CAMRAD II. Measurements included vibratory hub and pitch link loads, as well as three-dimensional lower rotor blade deformations extracted using digital image correlation. The model flap dynamics were validated using a rotating frame modal extraction technique based on a modified Ibrahim Time Domain method. The CAMRAD model successfully predicted unsteady loads and deformations for the isolated lower rotor operated with cyclic pitch in hover. To
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Singh, Puneet, and Peretz Friedmann. "A Computational Fluid Dynamics Based Viscous Vortex Particle Method for Coaxial Rotor Interaction Calculations." In Vertical Flight Society 73rd Annual Forum & Technology Display. The Vertical Flight Society, 2017. http://dx.doi.org/10.4050/f-0073-2017-12002.

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The coaxial rotor in hover and forward flight experiences complex unsteady aerodynamic interaction effects. Standard methods used for isolated rotor analysis are not adequate for obtaining the unsteady loads and wake. More accurate and computationally efficient approaches are required. The viscous vortex particle approach based on the Lagrangian formulation of the incompressible Navier-Stokes equations is a grid free method suitable for capturing the vortex wake interaction over long distances. The rational function approximation of unsteady airfoil loads from a CFD database is used to reduce
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Arzalluz, Irati, Xiaoxu Ji, Davide Piovesan, and Conor Marr. "Additive Manufacturing Design of a Vibration Isolator for Rotorcraft Simulator Seats." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-379.

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Helicopter pilots are exposed to a wide range of vibration frequencies, primarily generated by engine and rotor dynamics. These vibrations, particularly within the 0.5–80 Hz range, pose significant risks to pilot health, including musculoskeletal injuries and fatigue. To mitigate these effects, vibration isolators are employed, with passive and active isolation systems offering different advantages. This study investigates the initial design and performance of a novel metal additive manufactured vibration isolator, optimized for placement under the pilot's seat in a rotorcraft simulator. The i
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Metry, Andro, J. V. R. Prasad, and David A. Peters. "A Velocity Potential-Based Finite State Model for Ground Effect Analysis." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-135.

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A velocity potential-based finite state model (VPBFSM) has been developed to analyze an isolated rotor in ground effect. The model uses mass source distributions to represent the ground and enforces the non-penetration of flow boundary condition. In previous VPBFSM approaches to impose this boundary condition, the r = j terms were excluded to avoid singularities. This exclusion required adjustments to the source strengths and ground rotor size in order to impose the boundary condition properly, which reduced the model’s robustness. In the present study, the r = j terms are incorporated using a
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Zawodny, Nikolas, D. Boyd, and Casey Burley. "Acoustic Characterization and Prediction of Representative, Small-Scale Rotary-Wing Unmanned Aircraft System Components." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11346.

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In this study, hover performance and acoustic measurements are taken on two different isolated rotors representative of small-scale, rotary-wing unmanned aircraft systems (UAS) for a range of rotation rates. Each rotor system consists of two fixed-pitch blades powered by a brushless motor. For nearly the same thrust condition, significant differences in overall sound pressure level (OASPL), up to 8 dB, and directivity were observed between the two rotor systems. Differences are shown to be in part attributed to different rotor tip speeds, along with increased broadband and motor noise levels.
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Wentrup, Marc, Jean-Paul Pinacho, Jianping Yin, et al. "An Overview Of DLR Compound Rotorcraft Aerodynamics and Aeroacoustics Activities within the CleanSky2 NACOR Project." In Vertical Flight Society 74th Annual Forum & Technology Display. The Vertical Flight Society, 2018. http://dx.doi.org/10.4050/f-0074-2018-12727.

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The challenge of increasing range and speed of a rotorcraft is encountered in the scope of the European CleanSky2 "Fast Rotorcraft" project by Airbus Helicopters with the compound helicopter design RACER (RapidAndCostEfficientRotorcraft) for which the box wing and the tail parts designs are respectively protected by patent. This paper presents the DLR contributions to the RACER development. This includes the aerodynamic design of the wing and tail section as well as an overall assessment of performance and noise. In a first step the aerodynamic properties of the configuration are evaluated bot
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Reports on the topic "Isolated vertices"

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Mojidra, Rushil, and Keri Ryan. Influence of Vertical Ground Motion on Bridges Isolated with Spherical Sliding Bearings. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2019. http://dx.doi.org/10.55461/rynq3624.

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The motivation for this project developed from testing of a full scale building isolated with triple friction pendulum bearings on the E-defense shake table in Japan. The test demonstrated experimentally that the vertical component of ground motion can amplify both the base shear and the story acceleration in the isolated building. Vertical shaking introduced high-frequency variation in the axial force of the bearings, and, consequently, a high-frequency component in the bearing lateral force, which excited higher structural modes in the building. Since vertical bridges are flexible in the ver
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Moza, Andreea, Florentina Duica, Panagiotis Antoniadis, et al. Outcome of newborns in case of SARS-CoV-2 vertical infection. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.12.0093.

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Review question / Objective: To identify the types and examine the range of available evidence of vertical transmission of SARS-CoV-2 from mother to newborn. To clarify the key concepts and criteria for diagnosis of SARS-CoV-2 vertical infection in neonates. To summarize the existing evidence and advance the awareness on SARS-CoV-2 vertical infection in pregnancy. Background: Severe Acute Respiratory Syndrome Virus 2 (SARS-CoV-2), the virus that causes 2019 coronavirus disease (COVID-19), has been isolated from various tissues and body fluids, including the placenta, amniotic fluid, and umbili
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Malkinson, Mertyn, Irit Davidson, Moshe Kotler, and Richard L. Witter. Epidemiology of Avian Leukosis Virus-subtype J Infection in Broiler Breeder Flocks of Poultry and its Eradication from Pedigree Breeding Stock. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586459.bard.

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Objectives 1. Establish diagnostic procedures to identify tolerant carrier birds based on a) Isolation of ALV-J from blood, b) Detection of group-specific antigen in cloacal swabs and egg albumen. Application of these procedures to broiler breeder flocks with the purpose of removing virus positive birds from the breeding program. 2. Survey the AL V-J infection status of foundation lines to estimate the feasibility of the eradication program 3. Investigate virus transmission through the embryonated egg (vertical) and between chicks in the early post-hatch period (horizontal). Establish a model
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Hart, Carl. Vibration survey of Room 47 with a laser doppler vibrometer : Main Laboratory Basement, U.S. Army ERDC-CRREL. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/38919.

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Plans are underway to create an acousto-optic laboratory on the campus of the Cold Regions Research and Engineering Laboratory. For this purpose, existing space in the basement of the Main Laboratory will be renovated. Demanding measurement techniques, such as interferometry, require a sufficiently quiet vibration environment (i.e., low vibration levels). As such, characterization of existing vibration conditions is necessary to determine vibration isolation requirements so that highly sensitive measurement activities are feasible. To this end, existing vibro-acoustic conditions were briefly s
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Regan, Jack, Julie Bryant, and Craig Weinschenk. Analysis of the Coordination of Suppression and Ventilation in Single-Family Homes. UL Firefighter Safety Research Institute, 2020. http://dx.doi.org/10.54206/102376/slzh7498.

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Prior full-scale research with the fire service was primarily designed to isolate specific tactics, most often either ventilation or suppression, which allowed researchers to develop science-based recommendations related to the specific components of fireground operations studied in relatively controlled conditions. The current project went beyond earlier research by conducting twenty experiments in eight acquired, single-family residential structures and that combined fireground tactics to quantify the impact of coordination between ventilation and suppression actions. This experimental serie
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Russo, David, and William A. Jury. Characterization of Preferential Flow in Spatially Variable Unsaturated Field Soils. United States Department of Agriculture, 2001. http://dx.doi.org/10.32747/2001.7580681.bard.

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Preferential flow appears to be the rule rather than the exception in field soils and should be considered in the quantitative description of solute transport in the unsaturated zone of heterogeneous formations on the field scale. This study focused on both experimental monitoring and computer simulations to identify important features of preferential flow in the natural environment. The specific objectives of this research were: (1) To conduct dye tracing and multiple tracer experiments on undisturbed field plots to reveal information about the flow velocity, spatial prevalence, and time evol
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