200,653 research outputs found
Jahrbuch des S.A.C / 12 Panorama vom Pic d'Arzinol, 3002 m
No full text[Raphael] Ritz del. ad nat. ; Lith. F.Lips, BernGetönte LithographieFussleiste, rechts: Jahrbuch d. S.A.C. Bd. XI
Schnurer (Gustav) et Ritz (Joseph M.) — Sankt Kümmernis und Volto Santo, 1934
No full textDavid M. Schnurer (Gustav) et Ritz (Joseph M.) — Sankt Kümmernis und Volto Santo, 1934. In: Revue du Nord, tome 20, n°80, novembre 1934. pp. 341-345
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Ritz Theater
No full textRitz Theater located on 700 block of N. Chaparra
Recommended from our members
Ritz Theater
No full textRitz Theater on the 700 block of Chaparral street lined with car
The use of positive and negative penalty functions in solving constrained optimization problems and partial differential equations
No full textThe Rayleigh-Ritz Method together with the Penalty Function Method is used to investigate the use of different types of penalty parameters. The use of artificial springs as penalty parameters is a very well established procedure to model constraints in the Rayleigh-Ritz Method, the Finite Element Method and other numerical methods. Historically, large positive values were used to define the stiffness coefficient of artificial springs, until recent publications demonstrated that it is possible to use negative values to define the stiffness coefficients of the springs. Furthermore, recent publications show that constraints can be enforced using positive and negative mass or inertia in vibration problems and in a more generic sense using eigenpenalty parameters which are penalty parameters in the matrix associated with the eigenvalue. Before the commencement of this thesis, solutions using artificial inertia were published only for beams and simple spring-mass systems.
In this thesis the use of all possible types of penalty parameters are investigated in vibration problems of Euler-Bernoulli beams, thin plates and shallow shells and in elastic stability analysis of Euler-Bernoulli beams, including penalty parameters associated with the geometrical stiffness matrix. The study includes the use of penalty parameters for both enforcing support boundary conditions and continuity conditions along structural joints.
This investigation started with the selection of the set of admissible functions that would: (a) allow modelling of beams, plates and shells in completely free boundary conditions; (b) not present any limitation in the number of functions that can be used in the solution. This gives the possibility to converge to the constraint solution and to model any type of boundary conditions.
The procedure proposed in this work combines several advantages: accuracy of the results, relative fast convergence, simplicity of the set of admissible functions and flexibility to define boundary conditions. While there are other procedures that may give better accuracy for specific cases, the proposed method is more widely applicable.
The procedure used in this work also includes a way to check for round-off errors and ill-conditioning in the results; as well as a way to bracket the exact solution with upper and lower-bound results
Matrices with prescribed Ritz values
No full textAbstractOn the way to establishing a commutative analog to the Gelfand–Kirillov theorem in Lie theory, Kostant and Wallach produced a decomposition of M(n) which we will describe in the language of linear algebra. The “Ritz values” of a matrix are the eigenvalues of its leading principal submatrices of order m=1,2,…,n. There is a unique unit upper Hessenberg matrix H with those eigenvalues. For real symmetric matrices with interlacing Ritz values, we extend their analysis to allow eigenvalues at successive levels to be equal. We also decide whether given Ritz values can come from a tridiagonal matrix
Disputatio medica inauguralis de hydrope ascite
No full textquam ... pro obtinendis summis in medicina honoribus & privilegiis doctoralibus publicae eruditorum censurae submittit Iohannes Ritzius Berneggâ Rhegusc. Ad d. ... Mart. an M. DC. XC. ...Datum auf Titelblatt hs. ergänzt: Ad d. 7. Mart.Enth. 28 ThesenDiss. med. Basel, 169
Availability and use of molecular microbiological and immunological tests for the diagnosis of tuberculosis in Europe - public dataset
No full textThe original data are accessible as .csv file. This dataset supports the publication Tebruegge M, Ritz N, Koetz K, Noguera-Julian A, Seddon JA, et al. (2014) Availability and Use of Molecular Microbiological and Immunological Tests for the Diagnosis of Tuberculosis in Europe. PLOS ONE 9(6): e99129. https://doi.org/10.1371/journal.pone.0099129</span
Schnürer (G.) und Ritz (J. M.). Sankt Kümmernis und Volto Santo. Studien und Bilder
No full textGessler Jean. Schnürer (G.) und Ritz (J. M.). Sankt Kümmernis und Volto Santo. Studien und Bilder. In: Revue belge de philologie et d'histoire, tome 14, fasc. 2, 1935. pp. 505-510
Energy and fluid metabolism in microgravity
No full textAstronauts lose body mass when exploring space. The mechanism was considered to be an upward fluid shift inducing diuresis and natriuresis (the Henry-Gauer mechanism) during the first few days in microgravity. However, recent space missions have shown that neither diuresis nor natriuresis occurs in space missions. In contrast, a sodium-retaining status was shown, which led to positive metabolic sodium balances without fluid retention. Energy intake was consistently reduced whereas energy needs were unchanged, resulting in a negative energy balance of 20%. The reasons for this are many, although proper studies on appetite regulation have not been carried out. Despite numerous countermeasures, bone mass is lost in microgravity situations. These are body composition changes that need to be challenged before humans can be sent to space for extra-long missions
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