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VISCEL, a general-purpose computer program for analysis of linear viscoelastic structures. Volume 1 - User's manual
VISCEL computer program user manual for analysis of linear viscoelastic structure
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VISCEL: A general-purpose computer program for analysis of linear viscoelastic structures (user's manual), volume 1
This program, an extension of the linear equilibrium problem solver ELAS, is an updated and extended version of its earlier form (written in FORTRAN 2 for the IBM 7094 computer). A synchronized material property concept utilizing incremental time steps and the finite element matrix displacement approach has been adopted for the current analysis. A special option enables employment of constant time steps in the logarithmic scale, thereby reducing computational efforts resulting from accumulative material memory effects. A wide variety of structures with elastic or viscoelastic material properties can be analyzed by VISCEL. The program is written in FORTRAN 5 language for the Univac 1108 computer operating under the EXEC 8 system. Dynamic storage allocation is automatically effected by the program, and the user may request up to 195K core memory in a 260K Univac 1108/EXEC 8 machine. The physical program VISCEL, consisting of about 7200 instructions, has four distinct links (segments), and the compiled program occupies a maximum of about 11700 words decimal of core storage
Using a Balanced Reading and Spelling Approach to Enhance the “Spell to Write to Read” Program for Preschool to Fifth Grade
Reading is the foundation of much that society aspires to, even now in the age of technology. The teacher plays a key role in facilitating the learning of reading in an elementary school. By using a balanced reading approach through the use of spelling, phonics, writing and language, teachers will be able to apply user-friendly principles of reading with the curriculum, Spell to Write to Read. A handbook will be used to present this information during a workshop for teachers and para-professionals of preschool to fifth grade students
A method to extract pure Raman spectrum of epitaxial graphene on SiC
A method is proposed to extract pure Raman spectrum of epitaxial graphene on
SiC by using a Non-negative Matrix Factorization. It overcomes problems of
negative spectral intensity and poorly resolved spectra resulting from a simple
subtraction of a SiC background from the experimental data. We also show that
the method is similar to deconvolution, for spectra composed of multiple sub-
micrometer areas, with the advantage that no prior information on the impulse
response functions is needed. We have used this property to characterize the
Raman laser beam. The method capability in efficient data smoothing is also
demonstrated.Comment: 3 figures, regular pape
Few layer graphene on SiC, pyrolitic graphite and graphene: a Raman scattering study
The results of micro-Raman scattering measurements performed on three
different ``graphitic'' materials: micro-structured disks of highly oriented
pyrolytic graphite, graphene multi-layers thermally decomposed from carbon
terminated surface of 4H-SiC and an exfoliated graphene monolayer are
presented. Despite its multi-layer character, most parts of the surface of the
graphitized SiC substrates shows a single-component, Lorentzian shape, double
resonance Raman feature in striking similarity to the case of a single graphene
monolayer. Our observation suggests a very weak electronic coupling between
graphitic layers on the SiC surface, which therefore can be considered to be
graphene multi-layers with a simple (Dirac-like) band structure.Comment: 4 pages, 3 Figures Structure of the paper strongly modified, small
changes in Fig 2 and 3. Same interpretation and same result
Landau level spectroscopy of ultrathin graphite layers
Far infrared transmission experiments are performed on ultrathin epitaxial
graphite samples in a magnetic field. The observed cyclotron resonance-like and
electron-positron-like transitions are in excellent agreement with the
expectations of a single-particle model of Dirac fermions in graphene, with an
effective velocity of c* = 1.03 x 10^6 m/s.Comment: 4 pages 4 figures Slight revisions following referees' comments. One
figure modifie
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