Physical Sciences and Mathematics Commons^™

Occupational Choice And Employment Stability Among Forest Workers, Philip L. Cottel

Yale School of the Environment Bulletin Series

No abstract provided.

The Environment For Women Working On Environmental Problems, Jeanne Clare Ridley, Adele H. Goss, Jeanna Randall, Jane Westenberger

Yale School of the Environment Bulletin Series

No abstract provided.

Toward The Future Forest: Applying Physiology And Genetics To The Domestication Of Trees, J.H Rediske, F. Thomas Ledig, Peter S. Carlson, Thomas B. Rice, Richard P. Pharis

Yale School of the Environment Bulletin Series

No abstract provided.

Open-Land Policy In Connecticut, Roger L. Sherman, Neil C. Shropshire, Paul S. Wilson, Albert C. Worrell

Yale School of the Environment Bulletin Series

No abstract provided.

Computing Homogeneous Regression Equations Using Non-Homomgeneous Programs, Derek Bond, Gerald Steele

Derek Bond

No abstract provided.

Observation Of Persistent Currents In A Saturated Superfluid Film, Robert Hallock, R. K. Galkiewicz

Robert Hallock

We report the first observation of a persistent flow around a closed path consisting entirely of saturated superfluid helium film in a macroscopic geometry in which the saturated vapor was in unconstrained proximity to the film

Quasi-Isothermal Superfluid Film Oscillations, Robert Hallock

Robert Hallock

We have carried out a detailed study of the frequency and damping of the oscillations in levels of two reservoirs of HeII which are coupled only via the mobile superfluid film. Our experiments cover the temperature range 1.2

Quasi-Isothermal Superfluid Film Flow: Oscillations Between Two Reservoirs, Robert Hallock

Robert Hallock

We have carried out a detailed study of the frequency and damping of the oscillations in levels of two reservoirs of HeII which are coupled only via the mobile superfluid film. Our experiments cover the temperature range 1.2

Phytoplankton Distribution And Water Quality Indices For Lake Mead (Colorado River), Robert D. Staker, Robert W. Hoshaw, Lorne G. Everett

Publications (WR)

Phytoplankton samples were collected in Lake Mend 6 times from September 1910 to June 1971 for 8 stations at depths of 0. 3, 5, 10, 20, and 30 m. These samples were processed through a Millipore filter apparatus and 79 planktonic algae were identified. Algal divisions represented were Bacillariophyta, 42 species; Chlorophyta, 18 ; Cyanophyta, 9; Chrysophyta, 3; Cryptophyta, 3; Pyrrophyta, 2; and Euglenophyta, 2. Blue-green algae were dominant in late summer and fall; green algae, diatoms, and, cryptomonads in winter; and green algae in spring. The early summer flora was best represented by the Chlorophyta, Cryptophyta, and Chrysophyta. Palmer's …

The Recognition, Investigation, Interpretation, And Treatment Of Landslides In The Pacific Northwest, Harry Ludowise

Dissertations and Theses

Certain features unique to the Pacific Northwest influence landsliding in this region. Weakly consolidated sediments, dense vegetation and seasonally concentrated rainfall all contribute to the distinctive conditions that are encountered here.

This study gathers together information applying to the recognition and correction of Pacific Northwest landslides. Treatment practices common to this region are discussed.

A large slide located about 30 miles east of Portland, Oregon along the Clackamas River is used as an example. Exploration, instrumentation, analysis and corrective measures are illustrated.

Statistical Modelling Of Computer Systems: A Survey, Amrit L. Goel, Anand M. Joglekar

Electrical Engineering and Computer Science - Technical Reports

This paper briefly surveys the data dependent statistical methods useful for computer systems modelling. The techniques are classified according to their applicability toward comparison, tuning and design of computer systems. A review of papers dealing with statistical modelling of computer systems is presented and a comprehensive bibliography is included to provide a useful source of reference toward the present and potential applications of statistical methods for computer system modelling.

Blood And Tissue Identification Of Selected Birds And Mammals, Part 2, David W. Oates, Craig W. Brown, Debra L. Weigel

Other Publications in Wildlife Management

Part 2 (pages 30-50 of original)
Protein Patterns for Mammals (Figure 15):
Antelope
Badger
Beaver
Bobcat
Buffalo
Cat
Cow
Coyote
White-tailed Deer

Component Group Report

Journal of the Minnesota Academy of Science

No abstract provided.

A Glimpse Of Minnesota's Energy Future, Dean E. Abrahamson, Steven Emmings

Journal of the Minnesota Academy of Science

No abstract provided.

Minnesotans In Nature: Trends And Prospects, John R. Borchert

Journal of the Minnesota Academy of Science

No abstract provided.

Determining Sample Size For A Control Chart, Shu-Yang Catherine Jean

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The essential tool in statistical quality control is the control chart. In spite of the apparent simplicity of the control chart, most engineers, production men, and inspectors find that its use calls for an entirely new point of view. The power of this technique lies in its ability to separate out assignable causes of quality variation. This makes possible the diagnosis and correction of many production troubles and often brings substantial improvements in product quality and reduction of spoilage and rework. The control chart tells when to leave a process alone and thus prevents unnecessarily frequent adjustments that tend to …

Principal Component Factor Analysis, Kuang-Ming Chu

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The principal-factor solution is probably the most widely used technique in factor analysis and a relatively straight forward method to determine the minimum number of independent dimensions needed to account for most of the variance in the original set of variables.

The principal components approach to parsimony was first proposed by Karl Pearson (1901) who studied the problem for the case of nonstochastic variables, and in a different context. Hotelling provided the full development of the method (1933) and Thomson (1947) was the first to apply it to the principal factor analysis.

This method was first developed to deal with …

Maintaining Topological Properties On The Brink Of Destruction, Kay J. Hamm

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Throughout the paper we consider the setting where f is a continuous function (a mapping) whose domain X and range Y are both Hausdorff spaces. Our object is to determine conditions on the map f which insure that when X has a certain topological property Q, then Y will also have property Q. For example, if X is metrizable, then it does not necessarily follow that Y is a metric space; but if f is a perfect map, then metrizability is preserved. Chapter III is devoted to the study of this metrizability problem. In particular, we present Frink's [ 2] …

Functional Analysis Techniques In Numerical Analysis, Kenneth D. Schoenfeld

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

In this paper we will consider the problem of selecting the best, or optimal, numerical method of solution to a given mathematical problem. The admissible numerical methods will be a clearly defined set for each problem. Obviously, in order to find the best method in this set, we must have a clear mathematical formulation of just what "best" means; this will be the intent of Theorem 0.1. Intuitively, the best method will be understood to be the one which minimizes the maximum possible error where this error will be measured in terms of the norm of a given Hilbert space. …

Matrix Norms, I-Hui C. Cheng

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

In many situations it is very useful to have a single nonnegative real number to be, in some sense, the measure of the size of a vector or a matrix. As a matter of fact we do a similiar thing with scalars, we let jÀj represent the familiar absolute value or modulus of À. Fora vector x e: C , one way n of assigning magnitude is the usual definition of length, Il I 1/2 2 1/2 xl= = {jxij } , which is called the euclidean norm of x. In this case, length gives an overall estimate of the …

Families Of Weighing Matrices, Anthony V. Geramita, Norman J. Pullman, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

A weighing matrix is an n x n matrix W = W(n, k) with entries from {0, 1, -l}, satisfying WW^t = kI_n. We shall call k the degree of W. It has been conjectured that if n = 0 (mod 4) then there exist n x n weighing matrices of every degree k < n.

We prove the conjecture when n is a power of 2. If n is not a power of two we find an integer t < n for which there are weighing matrices of every degree

A Note On Supplementary Difference Sets, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

Let S₁, S₂,···, S_n be subsets of G, a finite abelian group of order v, containing k₁, k₂,...,kn elements respectively. Write T_i for the totality of all differences between elements of S_i (with repetitions), and T for the totality of elements of all the T_i. We will denote this by T= T₁ & T₂ & ... & T_n. If T contains each non-zero element of G a fixed number of times, lambda say, then the sets S₁, S₂, ..., …

Orthogonal Designs Iii: Weighing Matrices, Anthony V. Geramita, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

A weighing matrix W = W(n,k) of order n and weight k is a square (0,l,-l)-matrix satisfying

WW^t -kI_n

An orthogonal design of order n on a single variable is a weighing matrix and consequently the study of orthogonal designs is intimately connected with the study of weighing matrices.

This paper reviews and updates the current status of the conjectures:

I. Let n = 2 (mod 4). Then there exists a W(n,k) if and only if k < n - 1 is the sum of two integer squares;

II. Let n = 0 (mod 4). Then there exists a W(n,k) for each k < n. This conjecture has been verified for n = 28, 2^t+l, 2^{t +l}·3 …

Williamson Matrices Of Even Order, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

Recent advances in the construction of Hadamard matrices have depended on the existence of Baumert-Hall arrays and Williamson-type matrices. These latter are four (1,-1) matrices A,B,C,D, of order m, which pairwise satisfy

(i) MN^T = NM^T, M,N E (A,B,C,D),

and (ii) AA^T +BB^T +CC^T +DD^T = 4mI_m, where I is the identity matrix.

Currently Williamson matrices are known to exist for all orders less than 100 except: 35,39,47,53,59,65,67,70,71,73,76,77,83,89,94.

This paper gives two constructions for Williamson matrices of even order, 2n. This is most significant when no Williamson matrices of order n …

A Survey Of Orthogonal Designs, Anthony V. Geramita, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

This paper surveys orthogonal designs which are an overview of Baumert-Hall arrays, Hadamard matrices and weighing matrices.

The known results are given and unsolved problems indicated.

Semantic Decomposition Of Computer Programs: An Aid To Program Testing, Paul M. Zeslis

Department of Computer Science Technical Reports

No abstract provided.

Animal-Sediment Relations In A Tropical Lagoon: Discovery Bay, Jamaica, Robert C. Aller, Richard E. Dodge

Marine & Environmental Sciences Faculty Articles

The distribution of many macrobenthic species in the back-reef lagoon of Discovery Bay, Jamaica can be related to a gradient in bottom stability. This gradient is defined by increasing rates of biogenic reworking and sediment resuspension in the western part of the lagoon. Infaunal diversity and coral growth decrease in the western, unstable areas. The infauna of the carbonate sand consists mainly of deposit feeders. In the western lagoon, the feeding activities of this group result in high biogenic reworking rates (up to 6-7 cm/week) producing loose surface sediment easily resuspended by waves. A maximum, mean resuspension rate of 19 …

Radiation Testing Under Simulated Loca Conditions, Kenneth G. Mayhan, D. R. Edwards, W. F. Oberbeck, J. F. Montle

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The purpose of this evaluation is to gather data to determine whether or not radiation during a simulated Loss of Coolant Accident would have any effect upon the coatings being used. Because of the concern in industry regarding the safety of nuclear power generating stations and the strong actions of the various environmentalist clubs and agencies clubs and agencies, the utilities have been required to prove the safety of the power facilities to extraordinary degrees before licensing can be obtained to operate. One of the areas regarding the safety is the necessity of proving that the coatings will remain intact …

Future United States Energy Demand Patterns, Leland Blank, Richard Riley

UMR-MEC Conference on Energy / UMR-DNR Conference on Energy

The future energy demands of the United States are forecast using a unique approach. The saturation forecasting method reflects the inability of an individual to utilize more than a limited amount of energy. This technique also allows evaluation of various conservation methods and their effects on the future energy needs.

1974 Trace Element Nutrition, J. W. Gartrell

Experimental Summaries - Plant Research

1 • Mineral nutrition of sweet lupins 74M031, 74M032, 74M033, 74M034, 74M035, 74M036, 74M09, 74M038, 74BA15, 74BA16, 74BA17, 74BA18, 74AL20, 74JE19, 74ES27, 74ES28, 74E17, 74TS26, 74TS27, 74N028, (See Cox's Report)

2. Barley nutrition 74TS29.

3. Cu Zn Residual 74AL19, 66N14 (incomplete)

4. Cu or requirement of cattle 74GE30 (See May and Barker, Animal Production Report)

5. Co on sheep Badgingarra trial (See Croker's Report)