Published February 1959. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
SIDAC-I is a digital analog simulator which permits analog as
well as hybrid simulations to be programmed on a digital computer.
FORTRAN, a scientific computer language, may be included as an
integral part of the SIDAC-I simulation language. The simulator
consists of a controller program and a set of predefined...
This paper is a classification of 181 problems, each of which involves the evaluation or application of determinants. The problems are those which have appeared in the "Problems and Solutions" sections of the American Mathematical Monthly, Deutsche Mathematiker-Vereinigung Jahresbricht, Mathematics Magazine, and School Science and Mathematics. The problems are classified,...
Three inbred and relatively unrelated lines of Hereford cattle
(1. Lionheart, 2. Prince, and 3. David) developed at the Corvallis
branch of the Oregon Agricultural Experiment Station as part of the
W-1 project of the Western States were crossed annually from 1963
through 1965 inclusive. Data on 137 inbred and...
The extension and convergence of positive operators is investigated by means of a monotone approximation technique. Some generalizations and extensions of Korovkin's monotone operator theorem on C[0, 1] are given. The concept of a regular set is introduced and it is shown that pointwise convergence is uniform on regular sets....
Laboratory experiments were conducted to study those factors which control the rate at which salts, such as magnesium chloride and sodium chloride, are removed from titanium sponge. The sponge was prepared by reducing titanium tetrachloride with either magnesium or sodium, and the resulting sponge salt mixtures were treated by vacuum...
It is necessary to evaluate and compare the characteristics of
various methods of accessing data-files in order to utilize economically
both the hardware and the software (Space and Time) supported
by the digital on-line system. The purpose of this paper is to
describe and evaluate the structure and use of...
The well-known local adjustment algorithm for training a
threshold logic unit, TLU, is extended to a local adjustment
algorithm for training a network of TLUs Computer simulations
show that the extension is unsatisfactory.
A new logic for a committee of TLUs, called modified veto logic,
and a local adjustment algorithm...
The determinants of electrical energy demand for the State of
Oregon are represented in a mathematical model. This model is
structured to operate in parallel with a computer simulation model of
the state and is utilized independently to investigate electrical energy
consumption during various scenarios of economic activity and energy...
This report is concerned with the analysis of the effect of
finite wordlength, channel capacity and source rate in digital feedback
control of linear systems. The cases considered are (1) finite
wordlength A/D conversion, no feedback delay, ideal ROM (read
only memory) controller; (2) finite A/D wordlength (source rate),
state...
Turbulent mixing across adjacent subchannels in packed rod
bundles was studied using conductivity measurement and sodium
chloride solution as the tracer. Single phase water was the fluid
investigated.
The packed rod bundles were seven stainless steel tubes,
1.905 cm in diameter and 152.4 cm long, arranged in hexagonal close-packed
configuration...
Let K be a field, and G a finite group. G is said to be
K-adequate if there exists a division ring D, finite dimensional
over K, and with center K, such that G is contained in the
multiplicative group of nonzero elements of D.
In this dissertation we investigate...
A system to perform neutron radiographic analysis of dynamic
events taking place over the order of several milliseconds has been
developed at Oregon State University. The design consists of a TRIGA
reactor capable of pulsing to 3000 MW peak power, a neutron beam
collimator with an L/D of about 30:1,...
This thesis is concerned with designing and simulating waste
energy retrieval systems from large transformers to provide heating and
cooling of a control house. The transformer selected is Transformer
Bank One at the Ross Substation in the BPA system. The unit is an
ASEA 250 MVA transformer with forced oil,...
The problem of a fixed rectangular structure of unit width in a
train of simple harmonic normally-incident waves is modeled. The solution
allows for variable (1) length and draft of structure, (2) differing
depths in the three (fore, aft, and beneath the structure) distinct
regions, and (3) wave period. The...
Consider the situation where one is faced with a sequence of knapsack type problems which involves additional constraints on the permissible number of certain types of knapsack fillers to be used over the sequence. This research is concerned with determining good and perhaps optimal solutions which maximize the total value...
A computer code capable of modeling the burnup dependent static behavior
of a boiling water reactor was developed. The code calculates
three-dimensional quarter core power distributions using a simulated
two-group diffusion theory model. Thermal-hydraulic calculations account
for the interaction between power, coolant flow, and void fraction
distributions. Cross sections are...
Lamellar x-ray diffraction was studied from thin films of L-α-1,2-dipalmitoyl lecithin (DPL) and a 1:1 mixture (BrDPL) of L-α-l-palmitoyl-2-(9- bromopaimitoyl) lecithin and its 10-bromo analog. The specimens had high lamellar order, with an upper bound on the mosaicity of 6 mrad (0.4°) for DPL and BrDPL. With various water contents,...
This report presents the results of an input-output analysis for the Clatsop County economy of 1977. Financial information was collected from 292 firms in the county. The local economy was divided into 26 sectors. The financial information from the sample was used to estimate the economic interactions between these sectors...
In this thesis, computer simulation and evaluation of solar cooling systems are presented. The simulations were conducted using the TRNSYS program, developed at the University of Wisconsin. The TRNSYS program was modified by the addition of new models for the solar collector with high fluid thermal capacity, the absorption cooler,...
A multiple stage crosscurrent packed column suitable for gas-liquid
mass transfer was constructed and operated. The absorption
column consisted of a rectangular box constructed of plexiglass and
metal. Deflection baffles were positioned at regular intervals on
opposite sides of a central packed section to divert the gas phase
into the...
Finite order autoregressive models for time series are often
used for prediction and other inferences. Given the order of the
model, the parameters of the models can be estimated by least
squares, maximum likelihood, or the Yule-Walker method. The
basic problem is estimating the order of the model. A number...
During the W7711A cruise, from November 5 through November
13, 1977, a series of measurements were made on the hydrography, suspended particulate matter (spm), nutrients, first and second trophic level biomasses, primary productivity and zooplankton species for the purpose of gaining concurrent winter time information on these parameters. The cruise...
An important element in rector safety and fuel performance assessments is the efficient calculation of the time dependent temperature profiles within reactor fuel pins. Because the fuel pins have temperature dependent thermal properties, the governing partial differential equations are nonlinear. Traditionally, finite difference or finite element methods have been used...
This study was concerned with the flow of a magnetic self-propelled
ferrohydrodynamic fluid in a horizontal circular tube subjected
to axially varying temperature and magnetic field. The first
phase of the study involved the analytical solution to the governing
equations for the velocity and temperature profiles within the fully
developed...
An algorithm is developed to compute the time averaged, output
statistics of a linear system with periodic coefficients forced by
stationary white noise. The algorithm makes use of Floquet theory
and introduces the averaged system dynamics matrix to obtain more
favorable numerical performance. The time series approach to
averaged statistics...
In an effort to isolate and characterize cardiac glycosides C-17
binding site(s), we have synthesized different affinity and photoaffinity
C-17 side chain probes. These probes were screened for their
ability to inhibit Na⁺,K⁺-ATPase enzyme, a pharmacological receptor
of cardiac glycosides. The enzyme was isolated from hog kidney.
Screening of these...
This study was undertaken to determine if the structured observation of student teaching affects student teacher performance. A Structured Observation Scale (SOS), as an instrument for student teaching classroom observation, and a Satisfaction Scale (SS), to assess the satisfaction of cooperating teachers, student teachers, and university supervisors with the observation...
Describing functions have traditionally been used to obtain the
solutions of systems of ordinary differential equations. In this
work the describing function concept has been extended to include
nonlinear, distributed parameter partial differential equations. A
three-stage solution algorithm is presented which can be applied to
any nonlinear partial differential equation....
Cichelli gave a simple machine independent minimal perfect hashing function for small static sets. The hash function value for a word is computed as the sum of the length of the word and the values associated with the first and last letters of the word. Cichelli's algorithm (word-oriented) to find...
Leaf and fruit seasonal mineral fluctuations, fruit endogenous
ethylene, maturity and quality of 'Starkspur Golden Delicious' apple
(Malus domestica Borkh.) on six rootstocks: Seedling, Mailing (M)1,
M7, M26, Mailing Merton (MM)106, OAR-1, in a high density orchard
with two levels of each of the soil applied potassium (K₂SO₄) and
nitrogen...
Published June 1983. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Dredged spoil plumes are monitored during nine hopper dredge
disposal events in 186 foot water depths offshore near Coos Bay,
Oregon. Position and solids volume concentration characteristics of
the plumes are established.
Computer simulations of the monitored events are executed using
the WES modified version of the Koh-Chang instantaneous disposal...
Poetry in the People's Republic of China during the past 30 years has been dominated by works intensely political in nature – a kind of poetry known by the name zhengzhi shuqing shi (political lyric). The function of this poetry was to eulogize current political movements and to generate public...
An analytical model of the radiative contribution to the
total heat transfer between a large-particle (greater
than 1 mm) gas-fluidized bed and an immersed horizontal
tube is discussed. The model is applied to the case of a
bubbling bed and the emulsion phase contribution is obtained from a detailed analysis...
Two packages of subroutines were developed to perform material
balances on chemical processes using the simultaneous modular
approach and the equation-based approach. The performances of these
packages were compared for five different processes under at least
two conditions: one with no design specifications, and one with two
or more design...
Regionalized variable analysis has been used to study
a number of meteorological and hydrological variables
including precipitation (Delhomme and Delfinier, 1973),
streamfiow (Villeneuve et al., 1979) and hydraulics of
groundwater aquifers (Gambolati and Volpi, 1979). In the
research work reported in this thesis, an attempt was
made to characterize the...
Published June 1985. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This paper addresses the order-picking problem in a warehouse
and establishes some criteria for the planning, design, and improvement
of a warehouse layout to increase the order-picking efficiency.
A simulation model has been developed to study the effect of
warehouse layout on the order-picking throughput. Three major design
elements of...
In the past two decades, a great amount of attention has been
paid to investigating the economic and safe operation of power
systems using modern mathematical techniques. The classic economic
dispatch problem, now often called the Optimal Power Flow problem,
has been formulated as a mathematical optimization problem and has...
The properties of linear active coupled lines consisting of
electrically long GaAs MESFET structures are investigated for possible
applications as traveling-wave broad-band amplifiers. In addition,
the nonlinear coupled Schottky lines are studied for applications as
voltage tunable circuit elements.
The analysis of the general active asymmetric coupled transmission
lines in...
For control of a flexible manipulator, the assumed- mode method is applied to the mathematical model of the model reference adaptive system. In the assumed-mode method, the flexible, continuous manipulator is described by a limited number of degrees of freedom. A modified model reference adaptive system is studied for direct...
Published September 1989. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
In sonar or radar array processing, one of the most important objectives is to estimate the angles of incidence of distant source signals in a noisy environment. The standard eigenstructure-based method, which is known to yield high resolution spectral estimates for solving the direction finding problem, relies on the assumption...
The objective of this study was to develop a numerical model for the movement
and fate of chlorinated phenols in groundwater. In the first part, a numerical model for
several different equilibrium and nonequilibrium sorption processes under isothermal
conditions is developed for one-dimensional, steady-state water flow in soil columns.
The...
Adsorptive bubble-separation processes are used to
remove adsorptive contaminants from wastewater. A
mathematical model was developed for the adsorptive bubble
separation processes in a countercurrent column. The model
included an assumption that linear adsorption of the solute
occurred on the gas bubbles. Predictions indicated that
aqueous column height has less...
A simple heat exchanger network has been studied as
an example of a dynamically interactive process. The
process is relatively simple, requiring only temperature
measurements and flow rate manipulations. Equations are
presented for the design of a physical process having a
specified steady-state Relative Gain Array and specified
dynamic characteristics....
The work in this thesis has provided conclusive genetic evidence
that "panhandle" intermediates form during adenovirus replication.
Adenovirus chromosomes lacking 51 by from their left -hand termini
are infectious and capable of regenerating the missing origin
sequence. Yet if an entire inverted terminal repeat is removed, the
adenovirus chromosome is...
A time-domain model was developed to predict the fluid/structure
interaction of a three-dimensional deformable body in a fluid domain subject to
long-crested finite amplitude waves. These nonlinear waves induce transient
motion in the body. In turn, the interaction of the body with the waves modifies
the wave field, causing additional...
The movement characteristics of five landslides are
compared and interpreted based on records of approximately
10-years duration. Condon landslide in the Oregon Coast
Range has consistently exhibited brief (1 - 8 days) movement
episodes in wet winter months, separated by long periods of
no movement. The translatory movement is probably...
The coverage of a learning algorithm is the number of concepts that can be learned by that algorithm from samples of a given size for given accuracy and confidence parameters. This thesis begins by asking whether good learning algorithms can be designed by maximizing their coverage. There are three questions...
In recent years, considerable attention has been focused on the application of
orthogonal expansions to system analysis, parameter identification, model reduction
and control system design. However, little research has been done in applying their
useful properties to Power System analysis and control. This research attempts to
make some inroads in...
The emphasis of this work has been in two areas of optical materials - the
crystal-chemical development of new optical frequency converters and the synthesis
and study of new hosts for Cr³⁺ luminescence and lasing.
A simple method has been developed to identify promising frequency-doubling
materials containing triangular oxoanions by...
Methodologies for data reduction, modeling, and classification of grouped
response curves are explored. In particular, the thesis focuses on the analysis of
a collection of highly correlated, highly dimensional response-curve data of
spectral reflectance curves of wood surface features.
In the analysis, questions about the application of cross-validation
estimation of...
A project funded by the Southern California Edison (SCE) Company, Research
Center of Irwindale, California, has supported the development of a performance and
parameter prediction software program for use during the refurbishment of large
synchronous machines, turbine generators, and synchronous condensers. The computer
program was developed for SCE to allow...
With the increased demand for complex digital signal processing systems,
real-time signal processing requires higher throughput systems. In the past, the
throughput has been increased by increasing the clock rates, but
synchronization can become increasingly more difficult. Recently there has
been renewed interest in designing asynchronous digital systems. In an...
This thesis proposes an approximate maximum likelihood estimator and
likelihood ratio test for parameters in a generalized linear model when two or
more random effects are present. Substantial progress in parameter estimation
for such models has been made with methods involving generalized least squares
based on the approximate marginal mean...
In chapter 3 of our paper we present equations of motion for continuous mass
distribution subject to hydrodynamic forces in their most general form. We start
with equations for discrete mass particles and then transform the equations so
that it is appropriate for a continuous mass distribution. As we do...
Gender relations as well as the social situation of Manchu women have long been ignored in studies of the cultural evolution of the Manchu. By setting the discussion of Manchu women in the context of cultural adaptation, this study reintroduces gender and women's problems into the research on the Manchu...
This thesis uses an anthropological approach to examine the current social status
of the young elderly in contemporary urban China and explores the problems these people
are facing. A review of literature sets up complementary theoretical frameworks for the
understanding of the interaction between changing social environment and transitional life...
There is a software gap in parallel processing. The short lifespan and small installation base of parallel architectures have made it economically infeasible to develop platform-specific parallel programming environments that deliver performance and programmability. One obvious solution is to build architecture-independent programming environments. But the architecture independence usually comes at...
2 μm average sized silicon powder was nitrided with 90% N₂/10% H₂ in a
fluidized-bed reactor, operated at 1200°C, 1250°C and 1300°C. To fluidize silicon
powder, alumina particles with an average size of 300 μm were used as an inert fluidizing
conditioner. The feasibility and operating conditions of the fluidization...
Attempts to develop dual-purpose durum wheat cultivars for both pasta and bread-making
have been unsuccessful. To better understand this limitation, thirty durum
genotypes, selected based on their diverse geographical origin, and five bread wheat
cultivars were compared as to their flour mixing properties, dough physical characteristics
and baking performance. The...
Culture, thought worldview and language have been
discussed for a long time in different fields from various
perspectives. However, the basis of this study is the view
of language as both the product and producer of people just
as people are the producer and product of language. Each
language requires...