Готові списки джерел за темами / Collective rotation

Добірка наукової літератури з теми "Collective rotation"

Автор: Grafiati

Опубліковано: 7 липня 2024

Оновлено: 7 липня 2024

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Статті в журналах з теми "Collective rotation":

Ma, R., E. S. Paul, D. B. Fossan, Y. Liang, N. Xu, R. Wadsworth, I. Jenkins, and P. J. Nolan. "Rotational bands inCe135: Collective prolate and oblate rotation." Physical Review C 41, no. 6 (June 1, 1990): 2624–34. http://dx.doi.org/10.1103/physrevc.41.2624.

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Shelton, David P. "Collective molecular rotation in D2O." Journal of Chemical Physics 117, no. 20 (November 22, 2002): 9374–82. http://dx.doi.org/10.1063/1.1514976.

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Mafu, Mhlambululi, Comfort Sekga, and Makhamisa Senekane. "Security of Bennett–Brassard 1984 Quantum-Key Distribution under a Collective-Rotation Noise Channel." Photonics 9, no. 12 (December 6, 2022): 941. http://dx.doi.org/10.3390/photonics9120941.

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The security analysis of the Ekert 1991 (E91), Bennett 1992 (B92), six-state protocol, Scarani–Acín–Ribordy–Gisin 2004 (SARG04) quantum key distribution (QKD) protocols, and their variants have been studied in the presence of collective-rotation noise channels. However, besides the Bennett–Brassard 1984 (BB84) being the first proposed, extensively studied, and essential protocol, its security proof under collective-rotation noise is still missing. Thus, we aim to close this gap in the literature. Consequently, we investigate how collective-rotation noise channels affect the security of the BB84 protocol. Mainly, we study scenarios where the eavesdropper, Eve, conducts an intercept-resend attack on the transmitted photons sent via a quantum communication channel shared by Alice and Bob. Notably, we distinguish the impact of collective-rotation noise and that of the eavesdropper. To achieve this, we provide rigorous, yet straightforward numerical calculations. First, we derive a model for the collective-rotation noise for the BB84 protocol and parametrize the mutual information shared between Alice and Eve. This is followed by deriving the quantum bit error rate (QBER) for two intercept-resend attack scenarios. In particular, we demonstrate that, for small rotation angles, one can extract a secure secret key under a collective-rotation noise channel when there is no eavesdropping. We observe that noise induced by rotation of 0.35 radians of the prepared quantum state results in a QBER of 11%, which corresponds to the lower bound on the tolerable error rate for the BB84 QKD protocol against general attacks. Moreover, a rotational angle of 0.53 radians yields a 25% QBER, which corresponds to the error rate bound due to the intercept-resend attack. Finally, we conclude that the BB84 protocol is robust against intercept-resend attacks on collective-rotation noise channels when the rotation angle is varied arbitrarily within particular bounds.

Gulshani, P. "A semiclassical, microscopic model for nuclear collective rotation." Canadian Journal of Physics 84, no. 10 (October 1, 2006): 905–23. http://dx.doi.org/10.1139/p06-071.

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In this article, a semiclassical, microscopic model (dubbed SMRM) is derived to describe collective rotation in deformed nuclei. The SMRM is derived by transforming the time-dependent, multiparticle Schrodinger equation to a rotating frame whose axes are chosen to coincide with the principal axes of the expectation value of an arbitrary, second-rank, symmetric, tensor (nuclear shape) operator [Formula: see text]. This transformation circumvents the difficulty associated with the introduction of redundant particle coordinates in the Villars' transformation. The SMRM Schrodinger equation, which resembles the cranking model (CM) equation, is a time-dependent, time-reversal-invariant, nonlinear integro-differential equation. In this equation, the angular velocity is determined by the wave function and deformation–rotation shear operators, and this introduces the nonlinearity in the equation. A variational method is proposed and justified to obtain: a stationary solution of the SMRM Schrodinger equation in the Rayleigh–Ritz Hartree–Fock particle–hole formalism, the rotational energy increment, and the associated moment of inertia. When exchange interaction terms are neglected or a separable interaction is used, the SMRM moment of inertia is shown to reduce to that given by the CM provided that a certain relationship exists between the moment of inertia and the expectation value of [Formula: see text]. However, the SMRM and CM wave functions are not the same (SMRM preserves and CM violates time-reversal invariance) implying that the calculated values of other parameters, including the moment of inertia at higher values of the angular momentum, may not be the same in the two models. In any case, the SMRM derives the CM moment of inertia from a microscopic, time-reversal invariant, nonlinear theory.PACS Nos.: 21.60.Ev, 21.60.Fw, 21.60.Jz

YU, K. W., G. Q. GU, J. P. HUANG, and J. J. XIAO. "DYNAMIC ELECTRORHEOLOGICAL EFFECTS OF ROTATING PARTICLES: A BRIEF REVIEW." International Journal of Modern Physics B 19, no. 07n09 (April 10, 2005): 1163–69. http://dx.doi.org/10.1142/s0217979205030013.

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Particle rotation leads to a steady-state which is different from the equilibrium state in the absence of rotational motion. The change of the polarization of the particle due to the rotational motion is called the dynamic electrorheological effect (DER). There are three cases to be considered: rotating particles in a dc field, particle rotation due to a rotating field and spontaneous rotation of particle in dc field (Quincke rotation). In the DER of rotating particles, the particle rotational motion generally reduces the interparticle force between the particles. The effect becomes pronounced when the frequency is on the order of the relaxation rate of the surface charges. In the electrorotation of particles, the mutual interaction between approaching particles will change the electrorotation spectrum significantly. The electrorotation spectrum depends strongly on the medium conductivity as well as the conductivity contrast between the particle and the medium. In the collective behaviors of Quincke rotors, the mutual interactions between the individual rotors lead to the assembly of chain-like structures which make an angle with the applied field. This has an implication of a new class of material.

Endry, Endry, Muhammad Torik, and Bitoh Purnomo. "Pemanfaatan Sawah Warisan Secara Bergilir Menurut Hukum Islam dan Hukum Adat." Muqaranah 7, no. 2 (December 26, 2023): 139–48. http://dx.doi.org/10.19109/muqaranah.v7i2.19581.

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The use of inherited rice fields in rotation is in accordance with customary inheritance law and article 189 KHI, namely using collective principles. This is not in accordance with the individual principle in Islamic inheritance law. One reason is that in the collective system there is a delay in the distribution of inherited assets. This has the potential to cause conflict. The formulation of the problem in this research is how to implement the use of heritage rice fields in rotation among the Mayapati Village community. The aim of the research is to examine through Islamic law and customary law the rotational use of inherited rice fields in the Mayapati Village community. The type of research is field research with data collection through interviews, observation and documentation. This research is also normative legal research with a qualitative approach, namely data obtained through library materials such as books, documents or statutory regulations related to the problems that occur. Descriptive in nature, that is, the problem is formulated according to the facts that occurred. According to customary law, inherited rice fields are used in rotation according to a collective system. According to the view of Islamic law, inheritance should be divided based on the parts regulated in the text. Referring to the Compilation of Islamic Law, the rotational use of inherited rice fields which is in accordance with Islamic Law is only inherited collectively, in accordance with property rights in Islamic law, namely ownership for the benefit only or haqqul intifa', while the rotational use of rice fields is not in accordance with work regulations. with muzara'ah.

Terasaki, J., T. Marumori, and F. Sakata. "Microscopic Description of Nuclear Collective Rotation by Means of the Self-Consistent Collective Coordinate Method: Occurrence Mechanism of Collective Rotation." Progress of Theoretical Physics 85, no. 6 (June 1, 1991): 1235–70. http://dx.doi.org/10.1143/ptp.85.1235.

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Kinouchi, S. i., T. Kammuri, and T. Kishimoto. "Nuclear Collective Rotation in the SU3 Model. I: Semiclassical Rotation." Progress of Theoretical Physics 81, no. 1 (January 1, 1989): 117–39. http://dx.doi.org/10.1143/ptp.81.117.

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Steinhardt, T., J. Eberth, and I. Ragnarsson. "Stable collective triaxial rotation in 77Kr." European Physical Journal A 33, no. 4 (September 2007): 303–6. http://dx.doi.org/10.1140/epja/i2006-10456-2.

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Caprio, M. A., P. Maris, J. P. Vary, and R. Smith. "Collective rotation from ab initio theory." International Journal of Modern Physics E 24, no. 09 (September 2015): 1541002. http://dx.doi.org/10.1142/s0218301315410025.

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Through ab initio approaches in nuclear theory, we may now seek to quantitatively understand the wealth of nuclear collective phenomena starting from the underlying internucleon interactions. No-core configuration interaction (NCCI) calculations for p-shell nuclei give rise to rotational bands, as evidenced by rotational patterns for excitation energies, electromagnetic moments and electromagnetic transitions. In this review, NCCI calculations of 7–9 Be are used to illustrate and explore ab initio rotational structure, and the resulting predictions for rotational band properties are compared with experiment. We highlight the robustness of ab initio rotational predictions across different choices for the internucleon interaction.

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Дисертації з теми "Collective rotation":

Jenkins, Ian. "Collective nuclear rotation in '1'3'4Nd and '1'3'7Nd." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314529.

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Barbier, Rémi. "Algèbre quantique Uqp(u2) et application à la dynamique collective de rotation dans les noyaux." Lyon 1, 1995. http://www.theses.fr/1995LYO10198.

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Ce travail de these s'integre dans l'etude des nouvelles symetries en physique. Il se compose de trois parties. La premiere porte principalement sur l'etude de l'algebre quantique u#q#p(u#2). Plus precisement, nous developpons sa structure d'algebre de hopf et portons un interet particulier sur sa structure de coproduit. Les bases d'une theorie de la representation de u#q#p(u#2) sont introduites, d'une part, en construisant ses representations irreductibles de dimension finie et, d'autre part, en calculant ses coefficients de clebsch et gordan par la methode de l'operateur de projection extremal. Nous completons notre etude par la construction de quelques realisations en termes de bosons deformes des algebres quantiques u#q#p(u#2), u#q2(su#2) et u#q#p(u#1#,#1). La deuxieme partie est consacree a la construction d'un nouveau modele phenomenologique de rotateur non rigide se basant sur l'algebre quantique u#q#p(u#2). L'energie de rotation et les probabilites de transition reduites e2 sont obtenues en fonction des deux parametres de deformation de l'algebre quantique. Nous montrons comment et, dans quelle mesure, l'utilisation de la double deformation de l'algebre u#q#p(u#2) permet de generaliser le modele du rotateur en symetrie u#q(su#2). Nous introduisons egalement un nouveau modele de l'oscillateur anharmonique sur la base de cette algebre quantique. Nous montrons que les systemes physiques du rotateur non rigide et de l'oscillateur anharmonique peuvent etre couples par l'intermediaire des parametres de deformation de u#q#p(u#2). Un spectre de ro-vibration est obtenu sous la forme d'un developpement a la dunham de l'energie. L'objet de notre troisieme partie est l'application de notre modele de rotateur a la dynamique collective de rotation dans les noyaux super-deformes des regions de masse a 130 - 150 et a 190 et des isomeres de fission dans les actinides et les terres rares. Dans ce but, nous ajustons les parametres libres de notre modele ainsi que, a titre de comparaison, ceux de quatre autres modeles. Une analyse comparative est menee sur les energies de transition issues de l'ajustement et sur les valeurs des parametres. Nous calculons a partir des expressions des energies de rotation les moments d'inertie dynamiques. Une comparaison des resultats obtenus pour differents modeles permet de mettre en evidence le role des parametres de deformation de l'algebre quantique u#q#p(u#2)

Radjaï, Farhang. "Dynamique des rotations et frottement collectif dans les systèmes granulaires." Paris 11, 1995. http://www.theses.fr/1995PA112471.

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L'unilateralite geometrique et la loi de frottement de coulomb constituent les aspects les plus generiques des interactions entre particules dans les systemes granulaires. Ces lois sont non-regulieres en ce sens que les variables conjuguees impliquees appartiennent a un ensemble continu des valeurs acceptables qui ne peut pas etre represente comme une fonction mathematique. Nous avons montre que ce caractere non-regulier entraine des correlations non-triviales, meme lorsqu'il s'agit des systemes a geometrie simple. Ces correlations apparaissent a la fois dans le temps, par une auto-organisation des variables dynamiques, et dans l'espace, par la formation des domaines de tailles intermediaires entre celle des particules et celle du systeme. Ces domaines sont lies a la mobilisation progressive de la force de frottement dans le systeme et aux modes de rotation collectifs. Les roulements ont pour effet majeur d'introduire un coefficient de frottement macroscopique inferieur au coefficient de frottement entre particules et une inertie effective plus grande que la masse totale du systeme. Celle-ci prend toute son importance dans la limite quasi-statique. Dans le contexte du desordre geometrique, les forces de contact s'organisent, quelque soit la composition du systeme en tailles des particules, pour definir une distribution statistique en loi de puissance pour les faibles et en decroissance exponentielle pour les fortes forces de contact. Pour ces etudes nous avons realise a la fois des simulations fondees sur les lois de contacts non-regulieres, des experiences en laboratoire et une analyse theorique detaillee

Selkowitz, Anthony R. "Mental rotation and a drawing based training regiment." Honors in the Major Thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1139.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.
Bachelors
Sciences
Psychology

Guyomar, Tristan. "Roles of acto-myosin cortex dynamics in organoid self-organisation." Electronic Thesis or Diss., Strasbourg, 2023. http://www.theses.fr/2023STRAJ100.

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Dans cette thèse, nous étudions les organoïdes, mini-organes auto-assemblés issus de quelques cellules souches, qui offrent une perspective unique pour étudier l'organogenèse. Notre recherche relie les formes et les mouvements collectifs des organoïdes à la dynamique hors équilibre du cortex d’acto-myosine. À l'interface entre la physique et la biologie, nous concevons des expériences pour quantifier les propriétés cellulaires et tissulaires et nous intégrons ces mesures dans des modèles physiques révélant les règles d’auto-organisation des organoïdes. En utilisant des cystes MDCK, un modèle organotypique, nous explorons (i) le rôle des asymétries corticales sur la forme des cellules et du cyste, (ii) comment les protéines de jonction serrée influent sur la morphologie et la mécanique du cyste, et (iii) l'émergence de la rotation collective spontanée en 3D de doublets cellulaires due à la rupture de symétrie de la dynamique d’acto-myosine. Notre travail établit un lien entre l'auto-organisation des organoïdes et la dynamique d’acto-myosine, révélant comment les propriétés hors équilibre dirigent la morphogenèse
In this PhD study, we investigate organoids—self-assembled mini-organs derived from a few stem cells, offering a unique perspective on organogenesis. Our research links organoid shapes and collective motions to the out-of-equilibrium dynamics of the acto-myosin cortex. At the interface between Physics and Biology, we design experiments to quantify cellular and tissue properties and use theoretical physics to integrate measurements into models revealing the self-organization of organoids. Using MDCK cysts, an organotypic model, we explore (i) the role of cortical asymmetries on cell shape and cyst structure, (ii) how tight junction proteins influence cyst morphology and mechanics, and (iii) the emergence of spontaneous 3D collective rotation of cell doublets due to symmetry breaking of acto-myosin dynamics. Our work highlights the intricate link between organoid self-organisation and acto-myosin dynamics further revealing how out-of-equilibrium properties drive morphogenesis

Rogers, Rodney O. "Finding paths in the rotation graph of binary trees." Doctoral diss., University of Central Florida, 1996. http://digital.library.ucf.edu/cdm/ref/collection/RTD/id/2300.

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University of Central Florida College of Arts and Sciences Thesis
A binary tree coding scheme is a bijection mapping a set of binary trees to a set of integer tuples called codewords. One problem considered in the literature is that of listing the codewords for n-node binary trees, such that successive codewords represent trees differing by a single rotation, a standard operation for rebalancing binary search trees. Then, the codeword sequence corresponds to an Hamiltonian path in the rotation graph Rn of binary trees, where each node is labelled with an n-node binary tree, and an edge connects two nodes when their trees differ by a single rotation. A related problem is finding a shortest path between two nodes in Rn, which reduces to the problem of transforming one binary tree into another using a minimum number of rotations. Yet a third problem is determining properties of the rotation graph. Our work addresses these three problems.
Ph.D.
Doctorate;
Department of Computer Science
Arts and Sciences
Computer Science
247 p.
xi, 247 leaves, bound : ill. ; 28 cm.

Diaz, Derek Daniel. "Accidental Inversion During 3D Rotation With 2-Dof Input Devices." Doctoral diss., University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2075.

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This dissertation focuses on a human operator's ability to perform rotational control of a three-dimensional object using two-degrees of freedom (DOF) interface devices. Although input devices designed specifically for 3D interaction exist, devices traditionally used for two-dimensional user interaction, such as a mouse or joystick, have become ubiquitous to computer tasks. This research examines a particular human-computer interaction issue that arises from stimulus-response compatibility between three-dimensional stimuli spaces and 2-DOF response sets. The focal point of this research is a phenomenon referred to here as accidental inversion. Accidental inversions occur when an operator erroneously moves a three-dimensional object in a direction opposite than was intended. Thus, the effect of accidental inversion results from a mismatch between the operator's intended and actual input. A key assumption in diagnosing the causal factors involved in the accidental inversion effect is contribution from both internal (i.e., having to do with the individual) and external (i.e., having to do with the environment) influences. Three experiments were conducted to study accidental inversion. The first examined population stereotype, a measure of a target population's natural response tendencies to particular stimuli for a particular task. Results indicated a strong population stereotype for horizontal rotations (i.e., yaw) and weak stereotype for vertical rotations (i.e., pitch). This effect was mediated by whether the task was in the context of flight or ground-based movement. The second experiment analyzed the subjective preference for two opposite input-response (I-R) mappings (i.e., how the system responds to different input into the controlling device) for a task requiring control over vertical rotation. Results indicated that subjective preferences for I-R mappings were not heavily polarized. The third experiment also focused on vertical rotational control and examined how subjective preference for a particular I-R mapping affected performance. Furthermore, this experiment also examined performance when interference was introduced in the form of a temporary interruption where the participant had to conduct the task using an opposite I-R mapping. Results indicated that, upon being interrupted with the opposite I-R mapping, the group who used the mapping they subjectively preferred did worse than the group who used the mapping they did not prefer. This research has implications for the design of human-machine systems requiring human-in-the-loop three-dimensional rotational control. Some human-machine systems can have significant consequences from even a single mistake caused by a human-operator accidentally providing the wrong input. Findings from this research lead to two primary recommendations to the design of human-machine systems: a) an easily accessible and clearly indicated method to select input-response mapping which is provided before beginning the actual task, b) be informed of the current input-response mapping in use.
Ph.D.
Department of Psychology
Sciences
Psychology PhD

Fatolitis, Philip. "Initial Validation of Novel Performance-Based Measures: Mental Rotation and Psychomotor Ability." Doctoral diss., University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6223.

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Given the high-risk nature of military flight operations and the significant resources required to train U.S. Naval Aviation personnel, continual improvement is required in the selection process. In addition to general commissioning requirements and aeromedical standards, the U.S. Navy utilizes the Aviation Selection Test Battery (ASTB) to select commissioned aviation students. Although the ASTB has been a good predictor of aviation student performance in training, it was proposed that incremental improvement could be gained with the introduction of novel, computer administered performance-based measures: Block Rotation (BRT) and a Navy-developed Compensatory Tracking task. This work constituted an initial validation of the BRT, an interactive virtual analog of Shepard-Metzler's (1971) Mental Rotation task that was developed with the intention of quantifying mental rotation and psychomotor ability. For Compensatory Tracking, this work sought to determine if data gathered concord with results in extant literature, confirming the validity of the task. Data from the BRT were examined to determine task reliability and to formulate relevant quantitative/predictive performance human models. Results showed that the BRT performance is a valid spatial ability predictor whose output can be modeled, and that Compensatory Tracking task data concord with the psychometric properties of tracking tasks that have been previously presented in the literature.
Ph.D.
Doctorate
Psychology
Sciences

Hauschild, Karl. "Collective rotational behaviour in the A-130 region : #gamma#-ray spectroscopic studies of '1'3'2,'1'3'4Pr and '1'3'3Ce." Thesis, University of York, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284170.

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Sleiti, Ahmad Khalaf. "EFFECT OF CORIOLIS AND CENTRIFUGAL FORCES ON TURBULENCE AND TRANSPORT AT HIGH ROTATION AND BUOYANCY NUMBERS." Doctoral diss., University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4408.

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This study attempts to understand one of the most fundamental and challenging problems in fluid flow and heat transfer for rotating machines. The study focuses on gas turbines and electric generators for high temperature and high energy density applications, respectively, both which employ rotating cooling channels so that materials do not fail under high temperature and high stress environment. Prediction of fluid flow and heat transfer inside internal cooling channels that rotate at high rotation number and high density ratio similar to those that are existing in turbine blades and generator rotors is the main focus of this study. Both smooth-wall and rib-roughened channels are considered here. Rotation, buoyancy, bends, ribs and boundary conditions affect the flow inside theses channels. Ribs are introduced inside internal cooling channel in order to enhance the heat transfer rate. The use of ribs causes rapid increase in the supply pressure, which is already limited in a turbine or a generator and requires high cost for manufacturing. Hence careful optimization is needed to justify the use of ribs. Increasing rotation number (Ro) is another approach to increase heat transfer rate to values that are comparable to those achieved by introduction of ribs. One objective of this research is to study and compare theses two approaches in order to decide the optimum range of application and a possible replacement of the high-cost and complex ribs by increasing Ro. A fully computational approach is employed in this study. On the basis of comparison between two-equation (k-[epsilon] and k-[omega]) and RSM turbulence models, against limited available experimental data, it is concluded that the two-equation turbulence models cannot predict the anisotropic turbulent flow field and heat transfer correctly, while RSM showed improved prediction. For the near wall region, two approaches with standard wall functions and enhanced near wall treatment were investigated. The enhanced near wall approach showed superior results to the standard wall functions approach. Thus RSM with enhanced near wall treatment is validated against available experimental data (which are primarily at low rotation and buoyancy numbers). The model was then used for cases with high Ro (as much as 1.29) and high-density ratios (DR) (up to 0.4). Particular attention is given to how turbulence intensity, Reynolds stresses and transport are affected by Coriolis and buoyancy/centrifugal forces caused by high levels of Ro and DR. Variations of flow total pressure along the rotating channel are also predicted. The results obtained are explained in view of physical interpretation of Coriolis and centrifugal forces. Investigation of channels with smooth and with rib-roughened walls that are rotating about an orthogonal axis showed that increasing Ro always enhances turbulence and the heat transfer rate, while at high Ro, increasing DR although causes higher turbulence activity but does not necessarily increase Nu and in some locations even decreases Nu. The increasing thermal boundary layer thickness near walls is the possible reason for this behavior of Nu. The heat transfer enhancement for smooth-wall cases correlates linearly with Ro (with other parameters are kept constant) and hence it is possible to derive linear correlation for the increase in Nu as a function of Ro. Investigation of channels with rib-roughened walls that rotate about orthogonal axis showed that 4-side-average Nur correlates with Ro linearly, where a linear correlation for Nur/Nus as a function of Ro is derived. It is also observed that the heat transfer rate on smooth-wall channel can be enhanced rapidly by increasing Ro to values that are comparable to the enhancement due to the introduction of ribs inside internal cooling channels. This observation suggests that ribs may be unnecessary in high-speed machines, and has tremendous implications for possible cost savings in these machines. In square channels that rotate about parallel axis, the heat transfer rate enhances with Ro on three surfaces of the square channel and decreases on the inner surface (that is the one closest to the axis of rotation). However, the four-sides average Nu increases with Ro. Increasing wall heat flux at high Ro does not necessarily increase Nu on walls although higher turbulence activity is observed. This study examines the rich interplay of physics under the simultaneous actions of Coriolis and centrifugal/buoyancy forces in one of the most challenging internal flow configurations. Several important conclusions are reached from this computational study that may have far-reaching implications on how turbine blades and generator rotors are currently designed. Since the computation study in not validated for high Ro cases, these important results call for a experimental investigation.
Ph.D.
Department of Mechanical, Materials and Aerospace Engineering
Engineering and Computer Science
Mechanical, Materials and Aerospace Engineering

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Книги з теми "Collective rotation":

Matti, Krusius, ed. Collective motion of quantized vortex lines in rotating superfluid ³He-B. Otaniemi [Finland]: Helsinki University of Technology, Low Temperature Laboratory, 1992.

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J, Heidelberg Laurence, Konno Kevin E, and United States. National Aeronautics and Space Administration., eds. Acoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake: Data collection/analysis techniques. [Washington, DC: National Aeronautics and Space Administration, 1993.

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J, Heidelberg Laurence, Konno Kevin, and United States. National Aeronautics and Space Administration., eds. Acoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake: Data collection/analysis techniques. [Washington, DC: National Aeronautics and Space Administration, 1993.

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Holloway, Nolan P. Into My Rotation - A collection of scribes. Blackcurrant Press Company, 2012.

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Perez, Robert X. Data Collection, Data Analysis, and Condition Monitoring in Rotating and Process Machinery. Wiley & Sons, Incorporated, John, 2023.

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Perez, Robert X. Data Collection, Data Analysis, and Condition Monitoring in Rotating and Process Machinery. Wiley & Sons, Incorporated, John, 2023.

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Perez, Robert X. Data Collection, Data Analysis, and Condition Monitoring in Rotating and Process Machinery. Wiley & Sons, Incorporated, John, 2023.

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Perez, Robert X. Data Collection, Data Analysis, and Condition Monitoring in Rotating and Process Machinery. Wiley & Sons, Incorporated, John, 2023.

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Roth, Martin. Complete Motets from Florilegium Portense. Edited by L. Frederick Jodry. A-R Editions, 2021. http://dx.doi.org/10.31022/b218.

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Martin Roth was a student and later cantor at the Pforta school near Leipzig. His sixteen surviving motets are contained in the anthology Florilegium Portense, issued in two volumes in 1618 and 1621. Consisting largely of double-choir motets, this collection is a retrospective of late Renaissance style, intersecting with seventeenth-century usage in Lutheran churches. The collection consists of 165 pieces by about ninety composers and was used widely in schools and churches throughout central Germany. These motets were performed on a weekly basis as late as 1770 for services at the main churches in Leipzig; J. S. Bach purchased new copies in use at the St. Thomas School in 1729, mentioning that the old copies had been sung to pieces (zersungen). The fact that such late-Renaissance motets were performed in rotation for some 150 years in Leipzig lends depth to our understanding of baroque performance practice.

Caroline, Shenaz Hossein, and Christabell P.J., eds. Community Economies in the Global South. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780198865629.001.0001.

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People everywhere engage in social and solidarity economics to help themselves, community, and society on their own terms. Through a specific form of mutual aid, we examine the people who conscientiously organize financial cooperatives known as rotating savings and credit associations (ROSCAs) to bring positive changes to their own lives as well as others. ROSCAs are an ancient practice which are well documented, especially among Global Majority people. This book spotlights people in Latin America, Africa, Southeast Asia, and Asia who organize and use ROSCAs, commoning and similar cooperative systems, which are made up of voluntary members who cooperatively make regular contributions to a fund that is given in whole or in part to each member in turn. These collective money structures vary greatly across countries in the Global South, composed of ordinary people belonging to similar class origins. People who take up these systems decide on the rules jointly and in the interests of the collective, the members. The book is organized into case studies, and each case engages with J. K. Gibson-Graham’s community economies theory, as well as drawing on local theories and ideas to recognize distinct cultural contexts. This edited collection is the first of its kind organized by scholars concerned about empirical research, and mostly written by Global Majority scholars and activists to write stories using community economies theories about how people, no matter where they live, do their part to make business inclusive.

Частини книг з теми "Collective rotation":

Salehi, Niloufar, and Michael S. Bernstein. "Hive: Collective Design Through Network Rotation." In Understanding Innovation, 79–110. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-28960-7_6.

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Czarnowski, Ireneusz. "Learning from Imbalanced Data Streams Using Rotation-Based Ensemble Classifiers." In Computational Collective Intelligence, 794–805. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-41456-5_60.

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Le, Thanh, Ngoc Huynh, and Bac Le. "RotatHS: Rotation Embedding on the Hyperplane with Soft Constraints for Link Prediction on Knowledge Graph." In Computational Collective Intelligence, 29–41. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-88081-1_3.

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Wu, Qiumin, Shuozhong Wang, and Xinpeng Zhang. "Detection of Image Region-Duplication with Rotation and Scaling Tolerance." In Computational Collective Intelligence. Technologies and Applications, 100–108. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16693-8_11.

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Hoang, Van-Dung, and Kang-Hyun Jo. "Optimal Partial Rotation Error for Vehicle Motion Estimation Based on Omnidirectional Camera." In Computational Collective Intelligence. Technologies and Applications, 292–301. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-11289-3_30.

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Shahamatnia, Ehsan, André Mora, Ivan Dorotovič, Rita A. Ribeiro, and José M. Fonseca. "Evaluative Study of PSO/Snake Hybrid Algorithm and Gradient Path Labeling for Calculating Solar Differential Rotation." In Transactions on Computational Collective Intelligence XXIV, 19–39. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-53525-7_2.

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Santamato, E., B. Daino, M. Romagnoli, M. Settembre, and Y. R. Shen. "Collective Rotation of Molecules Driven by the Angular Momentum of Light in a Nematic Film." In Opticals Effects in Liquid Crystals, 158–61. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-011-3180-3_19.

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de la Cruz, M. Jason. "Automation of Continuous-Rotation Data Collection for." In cryoEM, 321–27. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0966-8_16.

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Rehahn, M., W. L. Mattice, and U. W. Suter. "Collection of RIS models." In Rotational Isomeric State Models in Macromolecular Systems, 19–476. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/bfb0050961.

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Akkul, Erdem Safa, Berk Arıcan, and Behçet Uğur Töreyin. "Bi-RDNet: Performance Enhancement for Remote Sensing Scene Classification with Rotational Duplicate Layers." In Advances in Computational Collective Intelligence, 669–78. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-88113-9_54.

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Тези доповідей конференцій з теми "Collective rotation":

Gulshani, P., Ricardo Alarcon, Philip L. Cole, Chaden Djalali, and Fernando Umeres. "A Microscopic Quantal Model for Nuclear Collective Rotation." In VII Latin American Symposium on Nuclear Physics and Applications. AIP, 2007. http://dx.doi.org/10.1063/1.2813820.

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Wang, J., I. Cotoros, D. S. Chemla, X. Liu, J. K. Furdyna, J. Chovan, and I. E. Perakis. "Memory effects in femtosecond collective spin rotation in ferromagnetic semiconductors." In SPIE OPTO: Integrated Optoelectronic Devices, edited by Kong-Thon Tsen, Jin-Joo Song, Markus Betz, and Abdulhakem Y. Elezzabi. SPIE, 2009. http://dx.doi.org/10.1117/12.809945.

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Gulshani, P. "A Semi-Classical, Microscopic Model for Nuclear Collective Rotation Plus RPA." In FRONTIERS OF FUNDAMENTAL PHYSICS: Eighth International Symposium FFP8. AIP, 2007. http://dx.doi.org/10.1063/1.2736991.

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Paul, E. S., A. J. Boston, C. J. Chiara, M. Devlin, D. B. Fossan, D. R. LaFosse, G. J. Lane, et al. "Collective dipole bands in [sup 110,112]Te: Stability against magnetic rotation." In Experimental nuclear physics in europe: Facing the next millennium. AIP, 1999. http://dx.doi.org/10.1063/1.1301780.

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STONE, N. J. "QUASI-PARTICLE AND COLLECTIVE MAGNETISM: ROTATION, PAIRING AND BLOCKING IN HIGH-K ISOMERS." In Proceedings of the Fifth International Conference on ICFN5. WORLD SCIENTIFIC, 2013. http://dx.doi.org/10.1142/9789814525435_0019.

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Gulshani, P. "A microscopic derivation of nuclear collective rotation-vibration model and its application to nuclei." In THERMOPHYSICS 2016: 21st International Meeting. Author(s), 2016. http://dx.doi.org/10.1063/1.4955344.

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Terayama, Kei, Hirohisa Hioki, and Masa-Aki Sakagami. "A Measurement Method for Speed Distribution of Collective Motion with Optical Flow and its Application to Estimation of Rotation Curve." In 2014 IEEE International Symposium on Multimedia (ISM). IEEE, 2014. http://dx.doi.org/10.1109/ism.2014.26.

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Àlvarez, Ana, Alexis Suárez del Villar, Eric Martinez, and Jonathan Santiago Guevara. "Services performance with the process standardization for tire rotation, alignment and balancing." In Human Interaction and Emerging Technologies (IHIET-AI 2022) Artificial Intelligence and Future Applications. AHFE International, 2022. http://dx.doi.org/10.54941/ahfe100853.

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Fred E. Meyers in the book Study of Times and Movements for agile manufacturing indicates that companies that implement standardization to services and production have a yield of 85% increasing productivity with the same resources. The objective of this investigation was the standardization of the service times of the tire rotation, Alignment and Balancing processes, carried out in a service company that sells tires and complementary products, they have three state-of-the-art workstations and two male technicians who meet the requirements to perform the functions inherent to the position they occupy. We normalize the cycles of the operations through measurement techniques and data obtained through collective observation in the jobs to determine the current situation of each of their activities or tasks, time study sheets, the Westinghouse Method and Method of returns to zero, in this way the standard times and supplementary percentages were established. With the established proposals to reduce the percentages of the variable supplements of use of muscular force / energy to lift, pull and push a weight of 25 kg from 13% to 1% by the implementation of a hydraulic lifting table bringing it to 5 kg and the reduction from 2% to 0% of the intermittent and loud noise of 95 dB using hearing protectors is reduced to 85 dB and a continuous sound is perceived, total supplements were reduced from thirty-one percent to fourteen percent which leads to have better delivery times with a decrease of 0.722 minutes for the interlocking operation and 0.60 minutes for balancing, having an effective working day of 408 minutes

Thurman, Christopher, and Nikolas Zawodny. "Aeroacoustic Characterization of Optimum Hovering Rotors using Artificial Neural Networks." In Vertical Flight Society 77th Annual Forum & Technology Display. The Vertical Flight Society, 2021. http://dx.doi.org/10.4050/f-0077-2021-16683.

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This work illustrates the use of artificial neural network modeling in the aerodynamic and aeroacoustic characterization of optimum hovering rotors over a broad range of design and operating conditions. Design of Experiments was used to create input feature spaces over eight input factors: the number of rotor blades, rotor radius, rotor rotation rate, design thrust condition, collective pitch, airfoil camber, the location of maximum camber, and the airfoil thickness. A low-fidelity tool chain was then used at the discrete data points defined by the designed input feature spaces to analytically design optimum hovering rotors and simulate aerodynamic and aeroacoustic quantities. This allowed for the generation of data sets over which to train and test the artificial neural network prediction models. Prediction models were trained over the data sets for the actual thrust generated by the rotor, power loading, tonal thickness and loading noise at the fundamental blade passage frequency, and broadband self-noise at seventeen one-third octave bands between 1 kHz and 40 kHz. These prediction models were validated by testing over data previously unseen by the models to quantify their capability for generalization to new data within the design feature space. The models were then used to study the effect each input feature had on the aeroacoustics and aerodynamics of optimum hovering rotors, and physical insights were gained to further explain the effect of each input. This characterization study showed that tonal noise and power loading were most sensitive to the number of rotor blades and the rotor rotation rate and that broadband noise was most sensitive to collective pitch and the design thrust condition.

Arsenault, H. H., Daniel Asselin, Shoude Chang, Luc Leclerc, and Yunlong Sheng. "Recent results in rotation-invariant pattern recognition." In Critical Review Collection. SPIE, 1992. http://dx.doi.org/10.1117/12.59849.

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Звіти організацій з теми "Collective rotation":

Younes, W. A primer on rotational collective enhancements in even-even nuclei. Office of Scientific and Technical Information (OSTI), July 2004. http://dx.doi.org/10.2172/15014474.

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Barnard, M. R., H. Macgregor, A. D. Michelson, and C. R. Valeri. Effects of White Cell Filtration, ACD Concentration and Rotation During Collection, Storage and Cryopreservation of Platelet Concentrates. Fort Belvoir, VA: Defense Technical Information Center, May 1997. http://dx.doi.org/10.21236/ada360226.

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Smith, Paul N., David R. J. Gill, Michael J. McAuliffe, Catherine McDougall, James D. Stoney, Christopher J. Vertullo, Christopher J. Wall, et al. Patient Reported Outcome Measures: Hip, Knee and Shoulder Arthroplasty Supplementary Report. Australian Orthopaedic Association, October 2023. http://dx.doi.org/10.25310/uzxp4031.

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The AOANJRR first reported PROMs outcomes in the 2021 Annual Report. This year, PROMs information is provided in this dedicated supplementary report. Patient reported outcome measures (PROMs) are surveys that assess dimensions of health from the perspective of the patient. These are additional joint replacement outcomes that are reported directly by patients through a bespoke electronic data capture system. The system is currently being implemented nationally in all hospitals undertaking joint replacement surgery. Several different instruments are used to collect data on patients’ quality of life and joint-specific pain, function, and recovery. This year, PROMs data are reported for primary total hip, primary total knee, primary stemmed anatomic shoulder and primary total stemmed reverse shoulder replacement undertaken for osteoarthritis (OA), and primary reverse total shoulder replacement undertaken for rotator cuff arthropathy. The data are presented overall for each category of joint replacement as well as for the two shoulder diagnoses assessed, and their variations by age and gender. Individual surgeon and individual hospital (both de-identified) pre-operative quality of life and joint-specific scores are also reported for primary total hip, primary total knee, and primary total stemmed reverse shoulder replacement only. The 2023 Patient Reported Outcome Measures Supplementary Report is based on the analysis of procedures using prostheses that have been available and used in 2022 (described as modern prostheses) with a procedure date up to and including 31 December 2022. These include 22,448 pre-operative and 14,677 post-operative PROMs for primary total hip procedures performed for osteoarthritis, 34,827 pre-operative and 22,363 post-operative PROMs for primary total knee procedures for osteoarthritis and 2,204 pre-operative and 1,271 post-operative PROMs for primary total stemmed anatomic and primary total stemmed reverse shoulder procedures performed for osteoarthritis and rotator cuff arthropathy. This PROMs Supplementary Report is one of 16 supplementary reports to complete the AOANJRR Annual Report for 2023. The 2023 Annual Report, Supplementary Reports, and investigations of prostheses with higher than anticipated rates of revision are available on the AOANJRR website. Information on the background, purpose, aims, benefits and governance of the Registry can be found in the Introduction of the 2023 Hip, Knee and Shoulder Arthroplasty Annual Report. The Registry data quality processes including data collection, validation and outcomes assessment, are provided in detail in the data quality section of the 2023 Hip, Knee and Shoulder Arthroplasty Annual Report: https://aoanjrr.sahmri.com/annual-reports-2023.

Williams, Cameron. Channel Islands National Park: Terrestrial vegetation monitoring annual report - 2020. National Park Service, August 2023. http://dx.doi.org/10.36967/2299696.

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This report presents the data collected in 2020 as part of the long-term terrestrial vegetation monitoring program at Channel Islands National Park. The purpose of this monitoring program is to document long-term trends in the park’s vegetation communities. Data are collected from 30-m-long transects using a point-line intercept method. In the past, each transect was sampled annually. However, beginning in 2012 the program began adding randomly located transects to improve the representativeness of the sampling, and transitioned to a rotating panel design. Now only a core subset of the transects are surveyed annually. Non-core transects are assigned to one of four panels, each of which is surveyed once every four years. Coronavirus disease (COVID-19) caused a global pandemic that prevented field data collection from most of the transects scheduled for 2020. As a result, just 29 of the 127 transects scheduled were visited, distributed as follows: Santa Barbara Island (n = 18), Santa Cruz Island (n = 11). The small size of this 2020 dataset offers limited comparisons to previous years. The program also planned to install 19 new transects on Santa Rosa and San Miguel islands to complete the probabilistic component of the study design (Tiszler et al. 2016a), but the safety response to COVID-19 did not permit these installations. Key 2020 results and interpretation: For the transects visited at both islands in 2020, a long-term decline in mean absolute cover, measured as the mean number of taxa intersecting each point along a transect, was apparent. Annual rainfall correlated positively with mean absolute cover of vegetation. Six vegetation communities were visited at Santa Barbara Island compared to nine at Santa Cruz Island, despite the smaller number of transects surveyed at the latter. Mean absolute cover at both islands together averaged 87%, with native plants covering 44% and non-natives covering 39%. Among vegetation communities, mean absolute cover ranged from a high of 137% in a Lyonothamnus grove to a low of 32% in a riparian community where few plants were encountered along one transect. Mean absolute cover was higher at Santa Cruz Island (105%) than Santa Barbara Island (77%), and mean absolute native cover followed the same pattern (57% vs 36%). For both islands combined, mean richness per transect was 11 taxa. Compared to Santa Barbara Island, Santa Cruz Island supported higher overall mean species richness (14 vs 9 taxa) and higher species evenness (0.70 vs 0.55). Santa Cruz Island’s higher absolute cover, higher native species cover, higher species richness, and higher species evenness indicate that its vegetation is in better overall condition compared to Santa Barbara Island, and that the rate of recovery after overgrazing is faster at Santa Cruz Island than Santa Barbara Island.

Weissinger, Rebecca. Trends in water quality at Bryce Canyon National Park, water years 2006–2021. Edited by Alice Wondrak Biel. National Park Service, November 2022. http://dx.doi.org/10.36967/2294946.

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The National Park Service collects water-quality samples on a rotating basis at three fixed water-quality stations in Bryce Canyon National Park (NP): Sheep Creek, Yellow Creek, and Mossy Cave Spring. Data collection began at Sheep Creek and Yellow Creek in November 2005 and at Mossy Cave in July 2008. Data on in-situ parameters, fecal-coliform samples, major ions, and nutrients are collected monthly, while trace elements are sampled quarterly. This report analyzes data from the beginning of the period of record for each station through water year 2021 to test for trends over time. Concentrations are also compared to relevant water-quality standards for the State of Utah. Overall, water quality at the park’s monitoring stations continues to be excellent, and park managers have been successful in their goal of maintaining these systems in unimpaired condition. Infrequent but continued Escherichia coli exceedances from trespass livestock at Sheep and Yellow creeks support the need for regular fence maintenance along the park boundary. High-quality conditions may qualify all three sites as Category 1 waters, the highest level of anti-degradation protection provided by the State of Utah. Minimum and maximum air temperatures at the park have increased, while precipitation remains highly variable. Increasing air temperatures have led to increasing water temperatures in Sheep and Yellow creeks. Sheep Creek also had a decrease in flow across several quantiles from 2006 to 2021, while higher flows decreased at Yellow Creek in the same period. Surface flows in these two creeks are likely to be increasingly affected by higher evapotranspiration due to warming air temperatures and possibly decreasing snowmelt runoff as the climate changes. The influx of ancient groundwater in both creek drainages helps sustain base flows at the sites. Mossy Cave Spring, which is sampled close to the spring emergence point, showed less of a climate signal than Sheep and Yellow creeks. In our record, the spring shows a modest increase in discharge, including higher flows at higher air temperatures. An uptick in visitation to Water Canyon and the Mossy Cave Trail has so far not been reflected by changes in water quality. There are additional statistical trends in water-quality parameters at all three sites. However, most of these trends are quite small and are likely ecologically negligible. Some statistical trends may be the result of instrument changes and improvements in quality assurance and quality control over time in both the field sampling effort and the laboratory analyses. Long-term monitoring of water-quality stations at Bryce Canyon NP suggests relatively stable aquatic systems that benefit from protection within the park. To maintain these unimpaired conditions into the future, park managers could consider: Regular fence checks and maintenance along active grazing allotments at the park boundary to protect riparian areas and aquatic systems from trespass livestock. Developing a springs-monitoring program to track changes in springflow at spring emergences to better understand bedrock-aquifer water supplies. These data would also help quantify springflow for use in water-rights hearings. Supporting hydrogeologic investigations to map the extent and flow paths of groundwater aquifers. Working with the State of Utah to develop groundwater-protection zones to protect groundwater aquifers from developments that would affect springs in the park. Prioritizing watershed management with proactive fire risk-reduction practices. Explicitly including watershed protection as a goal in plans for fire management and suppression. Using additional data and analyses to better understand the drivers of trends in water quality and their ecological significance. These could include higher-frequency data to better understand relationships between groundwater, precipitation, and surface flows at the sites. These could also include watershed metrics...