Relevant bibliographies by topics / Symmetric connectors

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'Symmetric connectors'

Author: Grafiati
Published: 19 February 2023

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Journal articles on the topic "Symmetric connectors"

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Nguyen Thai, Dung, Phung Van Minh, Cuong Phan Hoang, Tam Ta Duc, Nhung Nguyen Thi Cam, and Dung Nguyen Thi. "Bending of Symmetric Sandwich FGM Beams with Shear Connectors." Mathematical Problems in Engineering 2021 (July 7, 2021): 1–15. http://dx.doi.org/10.1155/2021/7596300.

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This paper carries out the static bending analysis of symmetric three-layer functionally graded sandwich beams, in which each layer is made from different functionally graded materials, and they are connected by shear connectors due to sliding movement. The finite element formulations are based on Timoshenko’s first-order shear deformation beam theory (FSDT) and the finite element method to establish the equilibrium equation of beams. The calculation program is coded in the MATLAB environment, and then verification examples are given out to compare the numerical data of present work with those of exact open sources. The impact of several geometrical and material parameters on the mechanical response of the structure, such as the height-to-length ratio, boundary conditions, volume fraction index, and especially the shear coefficient of connectors, is being explored. When designing and using these types of structures in engineering practice, the computed results can be utilized as a valid reference.
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Philip, Milu Mary, Vaibhav Shah, and Vijayakumar Balakrishnan. "Estimation and Generation of Software Architectural Specification to Handle Variation Points." International Journal of Software Engineering and Knowledge Engineering 28, no. 10 (September 25, 2018): 1517–34. http://dx.doi.org/10.1142/s0218194018500444.

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The development of a reliable and efficient software application system requires a competent software architecture which can attune to any design improvement opportunity in the early stages of software architectural design. An Architectural Description Language provides a description of all the component elements and their interactions. The proposed model determines all possible ways of connecting the components and connectors, after eliminating the transitive and symmetric conflicts among the connections, followed by the generation of the software architectural specification. An estimate on the maximum number of architectural specifications generated for a given number of components has been carried out. The syntax for specifying the components and the connectors has been formulated. The model proposed in the current work is generic and it will significantly help a software architect in building reliable, efficient and flexible software architecture, for any valid combination of components and connectors. It has been successfully tested for two prototype applications that involve processing of images and documents.
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Phung, Van Minh. "STATIC BENDING ANALYSIS OF SYMMETRICAL THREE-LAYER FGM BEAM WITH SHEAR CONNECTORS UNDER STATIC LOAD." Journal of Science and Technique 15, no. 3 (July 1, 2020): 68–78. http://dx.doi.org/10.56651/lqdtu.jst.v15.n03.213.

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In this paper, the mechanical behavior of symmetric FGM sandwich beams where each component layer is made from different funtionally graded materials and conected to one another by shear connectors is carried out. The finite element formulations are constructed based on the first-order shear deformation theory (FSDT) of Timoshenko for beam and finite element method. The calculation program is coded in the MATLAB environment and compared the results with particular cases. Effects of some geometrical and material properties such as the height-to-length ratio, boundary conditions, shear coefficient of connectors, etc. on the mechanical response of the structure are investigated.
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Wilde, D. J. "Two Generalizations of the Isometric Projection in Geometric Design." Journal of Mechanisms, Transmissions, and Automation in Design 111, no. 1 (March 1, 1989): 81–86. http://dx.doi.org/10.1115/1.3258975.

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The well-known pictorial drafting technique of isometric drawing is here generalized in two ways, called “isoclinal” and “axial,” or collectively, “symmetric.” Although the isoclinal projection preserves the useful property of foreshortening adjacent edges equally, and the axial projection foreshortens adjacent normals equally, the directions for these projections usually differ from that for isometric projection. Formulas are derived for the isoclinal and axial directions and their foreshortening factors and rotation matrices. Although intended for three-dimensional computer-aided design, the symmetric projections also can be performed on a drawing board with a protractor. Graphic examples involving design of nonrectangular connectors for three skew structural members and adjacent plates in space are presented.
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Deshpande, A., and G. Subbarayan. "LGA Connectors: An Automated Design Technique for a Shrinking Design Space." Journal of Electronic Packaging 122, no. 3 (September 1, 2000): 247–54. http://dx.doi.org/10.1115/1.1286021.

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The ever-increasing demand for higher-density interconnection between a multi-chip module and the printed circuit board has resulted in the emergence of Land-Grid Array (LGA) connectors as an alternative to the traditional pin and socket area-array connectors. The design of high-density land-grid array connectors involves trade-off between conflicting performance requirements on the normal force, wipe, bulk resistance, contact resistance, stress, contact z-dimensional thickness, and z-compression. These stringent design requirements have significantly shrunk the space of viable designs and have necessitated automated search procedures for finding designs that satisfy the design requirements. In this paper, such an automated design procedure based on nonlinear optimization techniques is presented. The design procedure includes a general shape representation scheme based on B-spline curves and a set of programs for carrying out automated nonlinear elastic-plastic-contact finite element analysis (for a given shape) using a commercial finite element code. This automated analysis procedure is coupled with a nonlinear optimization code to carryout optimal design of LGA connectors. The design of LGA connectors is mathematically formulated as an optimization problem and nine different design cases (with representative dimensions and material) are solved to determine the influence of initial design and optimization problem formulation. It is shown that better solutions (with less stress) result if both the width and the thickness of the contacts are allowed to vary. In general, the choice of initial design strongly influences the optimal solution. A triply-curved symmetric contact shape is shown to produce the least stress of three possible common LGA shape designs. [S1043-7398(00)00403-5]
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Zhang, Song, Yanmin Jia, and Yixing Ding. "Study on the Flexural Behavior of Steel-Concrete Composite Beams Based on the Shear Performance of Headed Stud Connectors." Buildings 12, no. 7 (July 6, 2022): 961. http://dx.doi.org/10.3390/buildings12070961.

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Headed studs have been widely used as shear connectors in steel-concrete composite beams for a long time. Studies on the influence of the different shear properties of headed studs on the flexural behavior of the composite beams have been inconclusive. In this research, we studied the shear performance influence of headed studs by conducting static push-out tests on seven designed push-out specimens. The flexural behavior of a steel-concrete composite beam connected by studs was discussed in detail by conducting a two-point symmetric monotonic static loading test. Based on the actual situation of the composite beam test, a finite element numerical model was established and validated, in which the elastic connections units were used to simulate the studs, and the force–slip data obtained from the push-out tests were used as the constitutive model of the studs. The effects of the stud diameter, stud height, the number of studs arranged, and concrete strength on the flexural behavior of the composite beams were analyzed and compared. The results showed that the number of studs arranged had a significant influence on the flexural behavior of the composite beams, followed by the strength of the concrete. The specifications of the studs had little effect on the flexural behavior of the composite beams within the study scope using the modeling method in this paper.
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Mejías-Bikandi, Errapel. "Gradual conventionalization of pragmatic inferences." International Review of Pragmatics 11, no. 2 (May 14, 2019): 222–34. http://dx.doi.org/10.1163/18773109-01102102.

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Abstract The alternation in Spanish between y and e on the one hand, and u and o in the other, is examined. It is proposed that the standard account under which the choice of one variant over the other is sensitive only to the phonetic context is incomplete. Specifically, the paper argues that pragmatic inferences that typically appear cross-linguistically associated with these connectors, and that result in asymmetric interpretations, are not favoured in Spanish with the morphological variants e and u, which favour symmetric interpretations. The paper proposes that the relevant pragmatic inferences have been partially conventionalized for y and o, but that this conventionalization has not occurred in the case of e and u for the reason that they are much less frequently used. Thus, discussion and data offer a view of a stage in a gradual process of semantic change via conventionalization of pragmatic inferences.
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LORENZ, KUNO. "Reflections on the concept of symmetry." European Review 13, S2 (August 22, 2005): 3–11. http://dx.doi.org/10.1017/s1062798705000621.

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The concept of symmetry is omnipresent, although originally, in Greek antiquity, distinctly different from the modern logical notion. In logic a binary relation R is called symmetric if xRy implies yRx. In Greek, ‘being symmetric’ in general usage is synonymous with ‘being harmonious’, and in technical usage, as in Euclid's Elements, it is synonymous with ‘commensurable’. Due to the second meaning, which is close to the etymology of συ´μμετρoς, ‘with measure’ has likewise to be read as ‘being [in] rational [ratios]’ and displays the origin of the concept of rationality of establishing a proportion. Heraclitus can be read as a master of such connections. Exercising rationality is a case of simultaneously finding and inventing symmetries. On that basis a proposal is made of how to relate the modern logical notion of symmetry, a second-order concept, on the one hand with modern first-order usages of the term symmetric in geometry and other fields, and on the other hand with the notion of balance that derives from the ancient usage of symmetric. It is argued that symmetries as states of balance exist only in theory, in practice they function as norms vis-à-vis broken symmetries.
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Katyl, R. H., and W. T. Pimbley. "Shape and Force Relationships for Molten Axisymmetric Solder Connections." Journal of Electronic Packaging 114, no. 3 (September 1, 1992): 336–41. http://dx.doi.org/10.1115/1.2905460.

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The analysis for equilibrium shapes of axial symmetric solder connections is presented, which includes the consideration of surface tension, external, and gravitation forces. Four methods of calculating the shapes are explained. The analysis and calculation methods are applied to molten solder drops in contact with wettable circular pads, and to controlled collapse interconnections. A discussion of planar arrays of nonidentical solder connections, and the control of connector shape and height by the use of such nonuniformity is included.
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Lacis, Raitis. "Circular hollow section connectors in timber-concrete composite structural elements." Baltic Journal of Road and Bridge Engineering 11, no. 1 (March 25, 2016): 70–76. http://dx.doi.org/10.3846/bjrbe.2016.08.

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This paper presents results of the laboratory tests of timber-concrete structural connectors applicable (but not limited to) road/pedestrian bridges. The tested elements are discrete circular hollow section connectors installed in the pre-drilled slots of a glulam. Symmetrical push-out tests are conducted for two groups of connectors: 1) with wood core not removed; no interlayer between wood and concrete; 2) concrete in-fill core instead of the wood core; waterproofing membrane interlayer between concrete and timber elements. Main structural parameters of the connectors are established including ultimate shear capacity and slip modulus. Relationship between the connector’s stiffness and ultimate shear capacity is established and failure mechanisms are briefly discussed.
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Dissertations / Theses on the topic "Symmetric connectors"

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Henschke, Chris, and chris henschke@rmit edu au. "Broken Symmetries: tensions and connections between art and science." RMIT University. Creative Media, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080110.121930.

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In respect to the nature and development of scientific knowledge and issues of abstraction and irrationality in science, there is evidence that the fundamental forms of inspiration and origins of methodology are common to both scientific and artistic research. Also, the results of artistic practice, although far more culturally specific and subjective, are arguably complementary to those of scientific research. What are then the methods used and results obtained when one makes art about scientific theories, using technologies derived from the results of scientific research? Furthermore, how does this 'art about science' affect our understanding of the relationship between art and science? These are some of the issues and ideas which I explored in my MA research project works between 2000 and 2005, and which I discuss in this exegesis. Through my research, I constructed a series of works which focused increasingly upon theories in physics and mathematics not only in an attempt to understand and communicate the theories to a wider audience, but also to communicate the historical and philosophical frameworks such theories were based upon. Through this I developed a working methodology which took inspiration from, but also subverted and critiqued the scientific theories and methodologies I was examining. The digital media tools I used, such as video, audio and programmed interactivity, opened up a line of communication between the disparate fields of artistic and scientific inquiry. The result was a series of interactive digital media and installation art pieces that explored various aspects of science, which were exhibited in both art and science spaces, and drew a wide range of responses from the scientific and general community.
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Vasilev, Stefan [Verfasser], and Ilka [Akademischer Betreuer] Agricola. "On metric connections with totally skew-symmetric torsion tensor / Stefan Vasilev ; Betreuer: Ilka Agricola." Marburg : Philipps-Universität Marburg, 2020. http://d-nb.info/1205879722/34.

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Reyes, Juan Daniel Bojowald Martin. "Spherically symmetric loop quantum gravity connections to two-dimensional models and applications to gravitational collapse /." [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-4758/index.html.

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Hanusch, Maximilian [Verfasser]. "Invariant connections and symmetry reduction in loop quantum gravity / Maximilian Hanusch." Paderborn : Universitätsbibliothek, 2014. http://d-nb.info/1064647138/34.

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Taylor, Stephen M. "On Connections Between Univalent Harmonic Functions, Symmetry Groups, and Minimal Surfaces." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1851.pdf.

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Mazzoni, Michele. "A fibre bundle approach to U(1) symmetries in physics." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16776/.

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In questa tesi si utilizza il formalismo dei fibrati principali per descrivere le propriet`a topologiche globali di sistemi fisici classici e quantistici che presentano simmetrie legate all’azione del gruppo U(1). Nel primo capitolo `e contenuta una esposizione della teoria matematica dei fibrati, con un particolare riguardo ai fibrati principali ed alle strutture differenziali definibili su di essi (forme differenziali di connessione e curvatura). Nel secondo capitolo si impiega il formalismo precedentemente sviluppato per trattare le propriet`a del monopolo magnetico di Dirac e si ottiene una quantizzazione della carica magnetica sulla base di considerazioni di natura topologica. Inoltre, si mostra l’impiego dei fibrati principali U(1) nella costruzione di una descrizione Lagrangiana globale per sistemi quali una particella carica nel campo del monopolo e una particella classica con spin in campo magnetico. Nel terzo capitolo, si descrive teoricamente la comparsa di una fase geometrica (fase di Berry) in sistemi quantistici che evolvono adiabaticamente nel tempo, e si fornisce un’interpretazione geometrica di tale fase come olonomia in un fibrato principale U(1). Il moto di una particella quantistica con spin in campo magnetico quasi-statico e l’effetto Aharonov-Bohm vengono presentati come esempi tipici di manifestazione di una fase geometrica.
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Francois, Jordan. "Réduction des symétries de jauges : une nouvelle approche géométrique." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4037/document.

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Le principe de symétrie locale, ou symétrie de jauge, est à la base de notre compréhension des interactions fondamentales. Le language naturelle des théories de jauge est la théorie des connections sur les espaces fibrés, une branche de la géométrie différentielle. En dépit de son importance, la symétrie de jauge pose deux difficultés qui méritent d'être mises en exergue: 1) L'invariance de jauge interdit les termes de masses pour les champs d'interactions, ce qui est en conflit avec la phénoménologie de l'interaction faible. 2) La quantification des théories de jauge est délicate puisque l'intégrale fonctionnelle est a priori mal définie. La symétrie de jauge doit donc être réduite. Essentiellement trois stratégies se présentent, répondant à l'un ou l'autre des deux problèmes. Le fixage de jauge répond à 2 (méthode de Faddeev-Popov). La brisure spontanée de symétrie répond à 1 (méchanisme de Higgs). Enfin, le théorème de réduction des fibrés répond à 1.On propose ici une nouvelle stratégie de réduction des symétries de jauge: la méthode du `dressing field'. C'est un résultat de géométrie différentielle qui se trouve être à la base de la notion de `variables de Dirac'. On montre que cette méthode éclaire certains travaux récents en physique hadronique. Le secteur électrofaible du Modèle Standard est traité ce qui induit une nouvelle interprétation. L'extension de la méthode aux G-structure d'ordre supérieur, ainsi qu'une application à la géométrie conforme, est donnée. Enfin on montre comment la méthode modifie l'algèbre BRS d'une théorie de jauge, et une analyse préliminaire de son impact sur la question des anomalies en Théorie Quantique des Champs est proposée
The principle of local symmetry, or gauge symmetry, is at the basis of our understanding of fundamental interactions. The natural framework of gauge theories is the theory of connections on fiber bundles, a branch of differential geometry. Despite its importance, gauge symmetry has some drawbacks, two especially prominent: 1) Gauge invariance forbids mass terms for interaction fields, which is at odds with the phenomenology of the Weak interaction. 2) The quantization of gauge theories is delicate since the path integral is a priori ill defined. Gauge symmetry must then be reduced. Essentially three strategies are available, each addressing one problem or the other. Gauge fixing addresses 2 (Faddeev-Popov trick). Spontaneous symmetry breaking addresses 1 (Higgs mechanism). Finally, the bundle reduction theorem addresses 1.We propose here a new strategy of gauge symmetries reduction: the dressing field method. It is a differential geometric result which happens to be the basis of the notion of `Dirac variable'. We show that this method sheds some light on recent works in hadronic Physics. The electrweak sector of the Standard Model is treated, which suggests a new interpretation. Extention of the method to higher-order G-structure, as well as an application to conformal geometry, is given. Finally we show how the method alters the BRS algebra of a gauge theory, and a preliminary analysis of its impact on the question of anomalies in Quantume Field Theory is proposed
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(9840752), Manouchehr Torabi. "Optimizing oxygen delivery in subsurface drip irrigation." Thesis, 2011. https://figshare.com/articles/thesis/Optimizing_oxygen_delivery_in_subsurface_drip_irrigation/13461740.

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Subsurface drip irrigation (SDI) is known as one of the most effective irrigation methods capable of improving water use efficiency through providing small amounts of water at short irrigation intervals and causing little or no water loss in terms of deep percolation, runoff and soil evaporation. However, temporal waterlogging within the root zone during and after irrigation events adversely affects root respiration, water and nutrient uptake and consequently plant growth. Therefore, irrigation of plants with hyper-aerated, or oxygenated, water could alleviate the impacts of waterlogging in the rhizosphere. Recent studies reportedly showed that aeration of irrigation water by means of venturi air injector in SDI systems (known as oxygation) enhanced crop performance in hypoxic soils. However, there was evidence of non-uniform improvement in crop yield along lateral pipes which might be ascribed to non-uniform distribution of air flow along irrigation pipes. Moreover, under pipe inclinations ranging from 5º to 15º, preferential flow of air was reportedly observed in branching pipe systems (containing no emitters) for ratio of water to air flow in the range of 0.1 – 0.3. In the current study, preliminary investigation on preferential flow of air into branching horizontal pipe layouts suggested that delivery of air bubbles from the first emitter on the lateral pipe closest to the junction of main pipe and manifold might have formed a zone of relative low pressure. It was speculated that the low pressure zone was responsible for occurrence of preferential air flow in the branching pipe systems.
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Kolokolnikov, Theodore. "Connections between symmetries and integrating factors of ODEs." Thesis, 1999. http://hdl.handle.net/2429/9164.

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In this thesis we examine the connections between conservation laws and symmetries, both for self-adjoint and non self-adjoint ODEs. The goal is to gain a better understanding of how to combine symmetry methods with the method of conservation laws to obtain results not obtainable by either method separately. We review the concepts of symmetries and integrating factors. We present two known methods of obtaining conservation laws without quadrature, using known conservation laws and symmetries. We show that the two methods yield the same result. For self-adjoint systems, we examine Noether's theorem in detail and discuss its generalisation for ODEs admitting more than one variational symmetry. We generalise an example from Sheftel [20] and show how to use r-dimensional Lie Algebra of variational symmetries to obtain more then r reductions of order. We develop an ansatz for finding point variational symmetries. We also develop ansatzes that use a known symmetry to find an integrating factor or another symmetry. These ansatzes are then used to classify ODEs. New solvable cases of Emden-Fowler and Abel ODEs result.
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"Construction of projectively flat connections over U(n,n)/U(n) x U(n) and SO*(4n)/U(2n)." 2010. http://library.cuhk.edu.hk/record=b5896641.

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So, Tse Leung.
Thesis (M.Phil.)--Chinese University of Hong Kong, 2010.
Includes bibliographical references (leaves 55-56).
Abstracts in English and Chinese.
Chapter 1 --- Geometric Quantization --- p.8
Chapter 1.1 --- Motivation --- p.8
Chapter 1.2 --- Prequantization --- p.10
Chapter 1.3 --- Kahler Polarization --- p.14
Chapter 1.4 --- Holomorphic Quantization and Fock Space --- p.17
Chapter 1.4.1 --- Example: Fock Space --- p.19
Chapter 2 --- Projectively Flat Connection --- p.21
Chapter 2.1 --- Variation of Complex Structure --- p.21
Chapter 2.2 --- Projectively Flat Connection on H --- p.24
Chapter 2.2.1 --- Example of n= 1: --- p.30
Chapter 3 --- Construction of Projectively Flat Connection --- p.34
Chapter 3.1 --- Mechanism for Construction of Projectively Flat Con- nection --- p.34
Chapter 3.2 --- K = C Case --- p.39
Chapter 3.2.1 --- Identification of C´ؤlinear Complex Structures --- p.40
Chapter 3.2.2 --- Projecitvely flat bundle on U(n)×U(n) --- p.43
Chapter 3.2.3 --- Example of n=1 --- p.44
Chapter 3.3 --- K = H Case --- p.45
Chapter 3.3.1 --- Identification of H-linear Complex Structures --- p.46
Chapter 3.3.2 --- Projecitvely flat bundle on SO*(4n) --- p.49
Chapter 3.3.3 --- Example of n = 1 --- p.51
Bibliography --- p.55
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Books on the topic "Symmetric connectors"

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Conference on Hopf Algebras and Tensor Categories (2011 University of Almeria). Hopf algebras and tensor categories: International conference, July 4-8, 2011, University of Almería, Almería, Spain. Edited by Andruskiewitsch Nicolás 1958-, Cuadra Juan 1975-, and Torrecillas B. (Blas) 1958-. Providence, Rhode Island: American Mathematical Society, 2013.

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McDuff, Dusa, and Dietmar Salamon. Introduction. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198794899.003.0001.

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Symplectic topology has a long history. It has its roots in classical mechanics and geometric optics and in its modern guise has many connections to other fields of mathematics and theoretical physics ranging from dynamical systems, low-dimensional topology, algebraic and complex geometry, representation theory, and homological algebra, to classical and quantum mechanics, string theory, and mirror symmetry. One of the origins of the subject is the study of the equations of motion arising from the Euler–Lagrange equations of a one-dimensional variational problem. The Hamiltonian formalism arising from a Legendre transformation leads to the notion of a ...
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Canarutto, Daniel. Gauge Field Theory in Natural Geometric Language. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198861492.001.0001.

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This monograph addresses the need to clarify basic mathematical concepts at the crossroad between gravitation and quantum physics. Selected mathematical and theoretical topics are exposed within a not-too-short, integrated approach that exploits standard and non-standard notions in natural geometric language. The role of structure groups can be regarded as secondary even in the treatment of the gauge fields themselves. Two-spinors yield a partly original ‘minimal geometric data’ approach to Einstein-Cartan-Maxwell-Dirac fields. The gravitational field is jointly represented by a spinor connection and by a soldering form (a ‘tetrad’) valued in a vector bundle naturally constructed from the assumed 2-spinor bundle. We give a presentation of electroweak theory that dispenses with group-related notions, and we introduce a non-standard, natural extension of it. Also within the 2-spinor approach we present: a non-standard view of gauge freedom; a first-order Lagrangian theory of fields with arbitrary spin; an original treatment of Lie derivatives of spinors and spinor connections. Furthermore we introduce an original formulation of Lagrangian field theories based on covariant differentials, which works in the classical and quantum field theories alike and simplifies calculations. We offer a precise mathematical approach to quantum bundles and quantum fields, including ghosts, BRST symmetry and anti-fields, treating the geometry of quantum bundles and their jet prolongations in terms Frölicher's notion of smoothness. We propose an approach to quantum particle physics based on the notion of detector, and illustrate the basic scattering computations in that context.
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Draganov, Alexandr. Mathematical Tools for Real-World Applications. The MIT Press, 2022. http://dx.doi.org/10.7551/mitpress/14218.001.0001.

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Techniques for applying mathematical concepts in the real world: six rarely taught but crucial tools for analysis, research, and problem-solving. Many young graduates leave school with a solid knowledge of mathematical concepts but struggle to apply these concepts in practice. Real scientific and engineering problems are different from those found in textbooks: they are messier, take longer to solve, and standard solution recipes might not apply. This book fills the gap between what is taught in the typical college curriculum and what a practicing engineer or scientist needs to know. It presents six powerful tools for analysis, research, and problem solving in the real world: dimensional analysis, limiting cases, symmetry, scaling, making order of magnitude estimates, and the method of successive approximations. The book does not focus on formulaic manipulations of equations, but emphasizes analysis and explores connections between the equations and the application. Each chapter introduces a set of ideas and techniques and then shows how these techniques apply to a series of problems. (Knowledge of algebra and trigonometry, but not calculus, is required.) The final two chapters tie all six techniques together and apply them to two real-world problems: computing the probability of a rare, catastrophic event, and tracking a satellite with a GPS receiver. Readers will learn how to analyze, dissect, and gain insight into the results by using all the techniques presented in earlier chapters—and discover how analysis tools work on problems not concocted for a textbook. The appendix provides solutions to many of the problems found throughout the book. Alexandr Draganov was born and raised in Kyiv, Ukraine; in light of the current war in Ukraine he will donate 100% of his royalties for the first year to support medical and humanitarian efforts there.
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Book chapters on the topic "Symmetric connectors"

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Walser, Hans. "Magic Symmetry." In Mathematics and Its Connections to the Arts and Sciences (MACAS), 467–85. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10518-0_26.

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Crampin, Mike, and David Saunders. "Connections on Lie Groupoids and Lie Algebroids." In Cartan Geometries and their Symmetries, 27–54. Paris: Atlantis Press, 2016. http://dx.doi.org/10.2991/978-94-6239-192-5_2.

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Grantcharov, Gueo. "Hyper-Hermitian Manifolds and Connections with Skew-Symmetric Torsion." In Clifford Algebras, 167–83. Boston, MA: Birkhäuser Boston, 2004. http://dx.doi.org/10.1007/978-1-4612-2044-2_11.

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Eastwood, Michael, and Vladimir Matveev. "Metric Connections in Projective Differential Geometry." In Symmetries and Overdetermined Systems of Partial Differential Equations, 339–50. New York, NY: Springer New York, 2008. http://dx.doi.org/10.1007/978-0-387-73831-4_16.

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Krasil’Shchik, I. S. "Algebras With Flat Connections and Symmetries of Differential Equations." In Lie Groups and Lie Algebras, 407–24. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5258-7_25.

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Hinge, Abhiraj, Pranav Garg, and Neena Goveas. "Image Processing for UAV Using Deep Convolutional Encoder–Decoder Networks with Symmetric Skip Connections on a System on Chip (SoC)." In International Conference on Intelligent Computing and Smart Communication 2019, 1009–15. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0633-8_102.

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Sutton, Adrian P. "Symmetry." In Concepts of Materials Science, 52–64. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192846839.003.0005.

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Symmetry arises not only in the invariance of an object to certain operations, but also in invariance of the equations governing motion of particles. Noether’s theorem connects continuous symmetries of equations of motion to conservation laws. The concept of broken symmetry arises in phase changes and topological defects, such as dislocations and disclinations. The principle of symmetry compensation reveals a deep sense in which symmetry is never destroyed – broken symmetries relate variants of an object displaying reduced symmetry. Symmetry plays a fundamental role in characterising the physical properties of crystals through Neumann’s principle. The concept of quasiperiodicity is introduced and it is shown how it is related to periodicity in a higher dimensional crystal.
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"Symmetry of the Plane." In Connections, 405–52. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811394_0012.

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"Connections." In Number, Shape, & Symmetry, 391–410. A K Peters/CRC Press, 2012. http://dx.doi.org/10.1201/b12926-20.

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Benito, Pilar, Cristina Draper, and Alberto Elduque. "Invariant connections on symmetric spaces." In Nonassociative algebra and its applications, 21–34. CRC Press, 2019. http://dx.doi.org/10.1201/9780429187674-3.

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Conference papers on the topic "Symmetric connectors"

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Liu, Fei, Jing Liu, Zhiwei Fang, Richang Hong, and Hanqing Lu. "Densely Connected Attention Flow for Visual Question Answering." In Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19}. California: International Joint Conferences on Artificial Intelligence Organization, 2019. http://dx.doi.org/10.24963/ijcai.2019/122.

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Learning effective interactions between multi-modal features is at the heart of visual question answering (VQA). A common defect of the existing VQA approaches is that they only consider a very limited amount of interactions, which may be not enough to model latent complex image-question relations that are necessary for accurately answering questions. Therefore, in this paper, we propose a novel DCAF (Densely Connected Attention Flow) framework for modeling dense interactions. It densely connects all pairwise layers of the network via Attention Connectors, capturing fine-grained interplay between image and question across all hierarchical levels. The proposed Attention Connector efficiently connects the multi-modal features at any two layers with symmetric co-attention, and produces interaction-aware attention features. Experimental results on three publicly available datasets show that the proposed method achieves state-of-the-art performance.
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Stewart, Barry, and Sam Kwok Lun Lee. "HPHT Subsea Connector Verification and Validation Using an API 17TR8 Methodology." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31051-ms.

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Abstract Wellhead connectors form a critical part of subsea tree production systems. Their location in the riser load path means that they are subjected to high levels of bending and tension loading in addition to internal pressure and cyclic loading. As more fields continue to be discovered and developed that are defined as High Pressure and/or High Temperature (HPHT) these loading conditions become even more arduous. In order to ensure the integrity of HPHT components, industry requirements for components are setout in API 17TR8. This technical report provides a design verification methodology for HPHT products and some requirements for validation testing. The methodology provides detail on the assessment of static structural and cyclic capacities but less detail on how to assess the functional and serviceability criteria for wellhead connectors. Similarly, API 17TR8 does not include prescriptive validation requirements for wellhead connectors and refers back to historical methods. This paper describes a practical application of the API 17TR8 methodology to the development of a 20k HPHT connector and how it was implemented to verify and validate the connector design through full scale tests to failure. A methodology was developed to meet the requirements of the relevant industry standards and applied to the connector to develop capacity charts for static combined loading. Verification was carried out on three dimensional 180° FEA models to ensure all non axi-symmetric loading is accurately captured. Connector capacities are defined based on API 17TR8 criteria with elastic plastic analysis (i.e. collapse load, local failure and ratcheting), functionality/serviceability criteria defined through a FMECA review and also including API STD 17G criteria including failure modes such as lock/unlock functionality, fracture based failure, mechanical disengagement, leakage and preload exceedance. These capacities are validated through full scale testing based on the requirements of API 17TR7 and API STD 17G with combined loading applied to the Normal, Extreme and Survival capacity curves (as defined by "as-built" FEA using actual material properties). Various test parameters such as strain gauge data, hub separation data, displacements, etc. were recorded and correlated to FEA prediction to prove the validity of the methodology. Further validation was carried out by applying a combined load up to the FEA predicted failure to confirm the design margins of the connector. Post-test review was carried out to review the suitability of the requirements set out in API 17TR8 and API STD 17G for the verification and validation of subsea connectors. The results build on previous test results to validate the effectiveness of the API 17TR8 code for verification and validation of connectors. The results show that real margins between failure of the connector and rated loads are higher than those defined in API 17TR8 and show that the methodology can be conservative.
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Wilde, D. J. "Two Generalizations of the Isometric Projection in Geometric Design." In ASME 1987 Design Technology Conferences. American Society of Mechanical Engineers, 1987. http://dx.doi.org/10.1115/detc1987-0045.

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Abstract The well-known pictorial drafting technique of isometric drawing is here generalized in two ways, called “isoclinal” and “axial”, or collectively, “symmetric”. Although the isoclinal projection preserves the useful property of foreshortening adjacent edges equally, and the axial projection foreshortens adjacent edges equally, the directions for these projections usually differ from that for isometric projection. Formulas are derived for the isoclinal and axial directions and their foreshortening factors and rotation matrices. Although intended for three-dimensional computer-aided design, the symmetric projections can also be performed on a drawing board with a protractor. Graphic examples involving design of non-rectangular connectors for three skew structural members and adjacent plates in space are presented.
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Brivio, F., S. Mazzoleni, and M. Milani. "Asymmetric Behaviour and Kink Shaping by Optical Feedback." In Nonlinear Dynamics in Optical Systems. Washington, D.C.: Optica Publishing Group, 1992. http://dx.doi.org/10.1364/nldos.1992.tuc9.

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A systematic investigation of optical feedback induced effects on semiconductor laser diodes shows a variety of phenomena; some of them are linked to (left-right) symmetry properties of the system (symmetric solitary device plus optical feedback source). Attention is devoted to the appearance of feedback induced nonlinearities (kinks) in the P-I curves just above threshold [1]. Such nonlinearities are present in the characteristic curves taken from both facets, depend on the feedback ratio, and are reproducible. Kink formation and shaping are not substantially affected by the path between the laser facet and the reflecting surface; in particular they are not dependent on the presence of splices or connectors when a typical transmission line is the subject of investigation. Furthermore the role of optical feedback in destroying the symmetry between light outputs from the (equal reflectivity) front and rear facet of the devices is examined in detail, and a connection is established with the feedback adversely affecting the differential quantum efficiency of the device, in a selected range of values of the feedback ratio.
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Bech, E. "Improvement of the absorbing clamp coupling and screening attenuation measurements and standards for symmetric and coaxial cables and connecting hardware (connectors and cable assemblies)." In IEE Colloquium on Screening Effectiveness Measurements. IEE, 1998. http://dx.doi.org/10.1049/ic:19980728.

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Gül, İlhan. "Quarter Symmetric Connections On Complex Weyl Manifolds." In International Workshop on Theory of Submanifolds 2016. Istanbul Teknik Üniversitesi: Istanbul Teknik Üniversitesi, 2017. http://dx.doi.org/10.24064/iwts2016.2017.10.

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Zou, Yan, Fujun Xiao, Linfei Zhang, Qian Chen, Bowen Wang, and Yan Hu. "Image super-resolution using convolutional neural network with symmetric skip connections." In Fourth International Conference on Photonics and Optical Engineering, edited by Jiangbo She. SPIE, 2021. http://dx.doi.org/10.1117/12.2586467.

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Dong, Lian-Feng, Yuan-Zhu Gan, Xiao-Liao Mao, Yu-Bin Yang, and Chunhua Shen. "Learning Deep Representations Using Convolutional Auto-Encoders with Symmetric Skip Connections." In ICASSP 2018 - 2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2018. http://dx.doi.org/10.1109/icassp.2018.8462085.

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Basavaraju, Chakrapani. "Evaluation of Dissimilar Socket Weld Connections." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93076.

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In the power industry, stainless steel is widely utilized for instrumentation tubing, while the small bore branch piping up to the root valves is either of carbon steel (A106 Gr. B, A106 Gr. C) or low alloy steel (A335 Gr. P11, A335 Gr. P22), or intermediate alloy steel (A335 Gr. P91). Stainless steel is not widely used for small bore piping. Generally, socket weld connections are employed in small bore piping applications as well as for pipe to tube adapter locations in instrumentation for sampling and sensing line applications. In this paper, socket weld connections at pipe to tube adapter locations are evaluated to determine the acceptability for higher temperature service applications. Finite element analysis methodology, based on axi-symmetric finite element models, is utilized to obtain thermal discontinuity stresses at the dissimilar socket weld connection. Taking into account the stress and cyclic considerations, the dissimilar socket weld connection is evaluated. Limitations and guidelines are provided concerning the acceptability for higher temperature service.
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Diewald, Andreas R., and Simon Muller. "Time domain connector extraction method for broadband measurement of symmetrical structures." In 2016 Loughborough Antennas & Propagation Conference (LAPC). IEEE, 2016. http://dx.doi.org/10.1109/lapc.2016.7807537.

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Reports on the topic "Symmetric connectors"

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Tolksdorf, Jurgen. Gauge Theories with Spontaneously Broken Gauge Symmetry, Connections and Dirac Operators. GIQ, 2012. http://dx.doi.org/10.7546/giq-3-2002-141-162.

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