A time-dependent, spectral, barotropic model and a similar
two-layer primitive equation model are developed to investigate the
planetary-scale wave responses to various types of large-scale
forcing: vorticity and heat sources, and sea surface temperature (SST)
anomalies. Both models are linearized about the zonal mean states of
January climatology.
The characteristics...
The determination of failure is complicated when a structural
element is subjected to combined rather than simple stresses. This
is especially true when the principle of superposition does not apply.
For such cases, tests of the element under the expected loads are
required to determine its failure criteria.
In this...
Our nation's schools are in a key position to promote regular physical activity
through participation in quality physical education programs (Sallis & McKenzie,
1991). The ultimate long-term demonstration of each program's impact is the
students' maintenance of an active lifestyle. Physical educators are consistently
attempting to find different ways to...
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C. School Permission Letter .................................................................. 60
A numerical technique is presented for solving the gas dynamics
of a pulsating combustor. The computer solution which is developed
follows directly from the fundamental conservation laws applied to
discrete volumes rather than attempting either to finite difference the
resulting partial differential equations, or to apply the Method of Characteristics....
According to Block (1999), the greatest problem with inclusion in physical education is the lack of personnel support. Most help comes in the form of teacher assistants such as peer-tutors and paraprofessional who receive very little, if any, direction from the general physical education teacher. However, what remains unknown are...
The primary purpose of this study was to determine the effects
of an interdependent group-oriented contingency on the MVPA
levels of middle school students during the fitness portion of physical
education lessons. Participants were randomly selected target
students from three intact eighth grade classes.
A combination of a delayed multiple...
The stress concentration factors at butt joints in six-ply laminated
lumber were determined experimentally. Concentration factors
for a uniform tensile stress were found for a joint at each of
three possible locations.
Four experimental techniques were used and evaluated on actual
wood specimens: strain gages, brittle lacquer, moiré grids, and...
Dead weight creep tests were conducted on polycarbonate in
order to determine if it is a linear viscoelastic material; or if it is
not, then to determine the feasibility of photoplastic stress freezing.
Secondary objectives were: the determination of the parameters in the
creep compliance of a four element viscoelastic...