Physical Sciences and Mathematics Commons^™

Some Decomposition Theorems For The Vector Space Of Matrix Summability Operators, Ed Kelly Jr., Tetsundo Sekiguchi

Journal of the Graduate Research Center

Consider the set T = {(aij) I aij are real } of matrix summability operators on the set B of bounded sequences of real numbers.

Toxic Hazards In Aerial Application, Paul W. Smith

United States Department of Commerce: Staff Publications

An analysis of the hazards accompanying the aerial application of toxic pest-control chemicals is presented. The nature of the chemicals, the symptoms of toxicity, recommended treatment, and suggestions for safe-handling, are discussed.

The introduction of the chlorinated, cyclic hydrocarbons for large-scale use as agricultural insecticides somewhat less than two decades ago, marked the beginning of a new era in agricultural pest control. In the intervening years, new chemicals, many of them engineered for specific agricultural purposes, have appeared in rapid succession. The large number and wide variety of these compounds, and their new and unfamiliar chemical and toxicological properties, have …

Water Levels In Observation Wells In Nebraska, 1961, C.F. Keech, J.B. Hyland

Conservation and Survey Division

No abstract provided.

A Proof Of A Theorem On Giffin's Paradox, Don E. Edmondson

Journal of the Graduate Research Center

For the uninitiated, Giflin's paradox is the name of a condition from economic analysis. One considers a consumer with a certain income faced with the decision of how much of two goods to purchase. Intuitively, one anticipates that this will depend upon the prices to be paid for the goods, and anticipates that if a price is increased the amount purchased by the consumer will decrease ( the other price being constant). If it happens that with an increase in price of a good, the demand for that good increases, then this paradoxical situation is called Giflin's Paradox. The theorem …

A Satellite Ratemeter Circuit, Daniel P. Christman

Physics & Astronomy ETDs

It was proposed that an attempt be made to measure the directional energy of high-energy primary gamma radiations in space. The difficulties of such an effort are readily obvious. To escape the environmental air envelope of the earth and to lessen the interference of secondary radiations, an instrument package would have to placed into a known orbital trajectory.

A Telemetering Inclinometer, Robert G. Geil

Physics & Astronomy ETDs

In present day experiments in Atmospheric Physics, information from the experiment is sometimes telemetered to observers located at positions remote from the apparatus. To obtain data from the stratosphere an instrument package may be sent aloft suspended from balloons. It is often desirable to know the azimuthal orientation of the instrument package.

To achieve this purpose a rotating ring magnetometer has been developed at the University of New Mexico to measure azimuthal orientation using the earth's magnetic field for a reference. This is sufficient for many purposes. However, due to the wind currents the package suspended beneath the balloon may …

A Study Of The Problems Involved In Measuring The Angular Momentum Of Microwave Radiation, Otis Kenley Wolfe Jr.

Doctoral Dissertations

Angular momentum will be defined below for material bodies and in Chapter II for electromagnetic radiation. The transfer of angular momentum from either of these to the other can conceivably be detected and measured. In this chapter there is a general discussion of the problem. Details in history and theory along with the definition of angular momentum for electromagnetic radiation will be presented in the next two chapters.

A Soil And Vegetation Inventory And Analysis Of Three Nebraska Sandhills Range Sites, Donald F. Burzlaff

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This study was undertaken to inventory the soils and vegetation of certain areas of the Sandhills and to seek edaphic characteristics that may be the limiting factor in the distribution of various plant species. Information of this nature will permit formulation of more accurate management practices because of a refinement in delineation of range sites.

Interbasin Movement Of Ground Water At The Nevada Test Site, Isaac J. Winograd

Publications (WR)

The present paper presents hydraulic evidence for the interbasin circulation of ground water through carbonate rocks of Paleozoic age at the Nevada Test Site. An integral part of this evidence is the discovery that aquifers in alluvium and tuff, formerly thought to be the principal aquifers at the Test Site, are semiperched above a thick tuffaceous aquiclude that separates them from the carbonate rocks.

This paper is based on one of the studies being made by the Geological
Survey for the Atomic Energy Commission. These studies seek to evaluate
the risk that may arise if ground water should be contaminated …

On Two Methods Of Unbiased Estimation With Auxiliary Variates, William (Bill) H. Williams

Publications and Research

No abstract provided.

Some Results Concerning Asymptotic Distributions And Their Applications., J. Sethuraman Dr.

Doctoral Theses

This thesis is being submitted to the Indian statistical Institute in support of the author's application for the degree of doctor of philosophy. The thesis embodies research carried out by the author during the period 1958-1961 under the supervision of dr.R.R. Bahadur, Professor of statistics are the Indian Statistical Institute Calcutta.This thesis is concerned with development of a new method of establishing asymptotic distributions and the elaboration of some of its applications in several fields of statistics.The thesis consists of five chapters. Chapter I describes, in general terms, the various problems considered in the thesis. Chapter II Deals with the …

Mathematics And The Managerial Imagination, Harlan D. Mills

The Harlan D. Mills Collection

No abstract provided.

Using A Density Gradient Column To Determine Wheat Density, Wendell R. Peters, Robert Katz

Robert Katz Publications

A wheat kernel placed in a density gradient column will sink until it reaches the level where its average density is equal to that of the liquid at that level. Knowing the density of the liquid as a function of height, one can measure accurately the density of the kernel to three decimal places in about 1 to 2 minutes per kernel. Kernel density ranged from a maximum of 1.416 at 7.5% moisture to a minimum of 1.255 g./cm.³ at 18.5% moisture, for the samples tested. Kernels of a homogeneously selected sample of hard spring wheat (Lee) varied in …

Methods Of Sewer Rat Control, Joe E. Brooks

Vertebrate Pest Conference Proceedings: 1st (1962)

The control of rats in the urban environment involves more than merely dealing with the above-ground populations. The average urban sewage system provides a vast labyrinth of passages and nesting places for the Norway rat, Rattus norvegicus. Here, in a protected underground habitat the rodent population is free to reproduce and ultimately expand to the maximum number that the environment can support. Eventually, the population outgrows its environment. At this point population pressures force animals to move out of the system. Rat burrows begin appearing in front yards, under sidewalks and driveways, and in flower beds, and rats themselves are …

Commensal Rodents, W. W. Dykstra

Vertebrate Pest Conference Proceedings: 1st (1962)

The evolution of effective rodent control has been greater in the past 20 years than during the previous 200 years. Mankind need no longer fear the "black death," typhus, and other rodent-borne diseases. Likewise, there is no longer any reason why we must bear the cost of serious economic losses because of commensal rodent damage to property. Unfortunately, the latter still totals many millions of dollars each year. Damage and contamination of food products by house mice now probably equals or exceeds that caused by rats.

Ectoparasite Control In Public Health , Allan M. Barnes

Vertebrate Pest Conference Proceedings: 1st (1962)

The inclusion of a chapter on ectoparasite control in a work otherwise devoted to vertebrates has a great deal of justification; the ecologies of vertebrates and their invertebrate parasites are inseparable, thus, the vertebrate control specialist is brought into intimate contact with ectoparasites and ectoparasite problems. In many cases, the need for vertebrate and ectoparasite control problems is one, and knowledge of techniques in both areas is required. The term "ectoparasite" groups a broad array of invertebrate animals externally parasitic on larger animals, many of them blood feeders in at least one stage of their life cycles. The ecological relationships …

Pigeons, Starlings And English Sparrows, G. L. Hockenyos

Vertebrate Pest Conference Proceedings: 1st (1962)

This paper deals with the control of excessive numbers of pigeons, starlings and English sparrows in urban situations in the Midwestern region of the United States. Control procedures should always be based on a survey of the factors involved in the problem so that the most feasible methods can be determined. There is no one tool of bird control that fits all situations, and in most cases more than one tool is indicated. Since the feral pigeon is the most common pest species, emphasis will be placed on pigeon control methods. Urban bird control, like urban rat control, may involve …

Infectious Disease Hazards To Pest Control Operators, Paul Arnstein Dvm, Mph

Vertebrate Pest Conference Proceedings: 1st (1962)

One of the primary reasons for controlling most vertebrate pests is the role these creatures play as links in the infection chain of certain agents pathogenic to man. It is reasonable to assume that the persons engaged in the eradication or removal of pests are at some risk of contacting zoonoses - diseases transmissible from animals to man. Unfortunately, histories or epidemiological data of occupational infections among pest control operators are not available; perhaps this society may become a future assembly point for statistics in this field. The hazards therefore have to be approached theoretically: diseases known to be associated …

Review Of Current Vertebrate Pesticides, D. Glenn Crabtree

Vertebrate Pest Conference Proceedings: 1st (1962)

For the purpose of this brief review, emphasis will be placed on development, physical properties, physiological action, experience and limitations of vertebrate pesticides primarily of current opera¬tional importance in the control of field rodents and predatory animals.

STRYCHNINE (C21H22N2O2)

SODIUM MONOFLUOROACETATE (FCH2-CO-0Na)= "1080"

THALLIUM (Thallous-Sulfate TL2SO4)

ZINC PHOSPHIDE (Zn3P2)

CYANIDE (Compounds Yielding HCN on Hydrolysis)

RED SQUILL (Urginea maritima)

ANTU Alphanaphtylthiourea (l-(l-Napthyl)-2-thiourea)(C11H10N2S)

ANTICOAGULANTS--warfarin, diphacinone

TRACKING POWDERS

ARSENIC ERIOXIDE (AS2O3)

ENDRIN (1,2,3,4,-10, 10-hexachloro-6,7-epoxy-l,4,4a,5,6,7,8,8a-octa-hydro-1,4-endo,endo-5, 8-dimethanonaphthalene)

CALCIUM CYANIDE (CaCN2)

CARBON DISULFIDE (CS2)

PYROTECHNIC (GAS) CARTRIDGES

Federal Law And Vertebrate Pest Control, Justus C. Ward

Vertebrate Pest Conference Proceedings: 1st (1962)

Shortly after the passage of the Federal Insecticide Act of 1910, mammal control specialists in the Bureau of Biological Survey began to consider a similar law to cover the chemicals with which they were concerned. Work on the project went slowly and spasmodically, but reached the point of having a Federal Rodenticide Act available for study and possible revision in 1928. At this time, the mammal control chemicals in use were limited to strychnine--alkaloid and sulphate-arsenic, barium carbonate, thallium sulphate, phosphorus, sodium and calcium cyanide, carbon disulphide, and red squill. Strychnine alkaloid was about the only predatory animal control agent, …

Concluding Remarks Of Appreciation With Comments On Histoplasmosis And Cryptococcosis, Philip J. Spear

Vertebrate Pest Conference Proceedings: 1st (1962)

The record of this meeting will stand as a permanent tribute to Dr. Walter Howard and his associates. It should remind them for years to come of their worthwhile contribution in conceiving, organizing, promoting, and handling the details of this first Vertebrate Pest Control Conference. Those of us privileged to attend will be grateful for the opportunity to enlarge our acquain¬tance with the workers in the vertebrate pest control field, and to share in this exchange of information. The National Pest Control Association, whose members provide among other services, control of many vertebrate pests, draw information and guidance from many …

Vertebrate Pest Control Conference: Contents

Vertebrate Pest Conference Proceedings: 1st (1962)

Proceedings of a meeting held at Sacramento, California, February 6-7, 1962. Sponsored by National Pest Control Association, 250 West Jersey Street, Elizabeth, New Jersey, and California Vertebrate Pest Control Technical Committee.
GENERAL CHAIRMAN OF CONFERENCE: Walter E. Howard, Associate Vertebrate Ecologist, Field Station Administration, University of California, Davis, California

Vertebrate Pest Control, Walter E. Howard

Vertebrate Pest Conference Proceedings: 1st (1962)

It is a pleasure and privilege for me to welcome all of you to this conference. And it is a conference, not a convention. No motions or resolutions will be entertained, as this conference is made up of representatives of many governmental agencies and countries; hence, not a place for resolutions. We are here to get acquainted with each other and to listen to experts from North America and Korea tell us about the best methods of controlling troublesome and pestiferous birds, mammals and snakes, and to discuss related problems concerning diseases and pesticides. Since the program is crowded, each …

The Pest Animal Problem: Keynote Speech, W. C. Jacobsen

Vertebrate Pest Conference Proceedings: 1st (1962)

There is an inscription across the top of the impressive facade of the National Archives Temple in Washington, D. 0., which reads: "What is Past is Prologue." So be it. Perhaps it applies to us here- At least the inscription furnishes a basis for me to indulge in a few com¬ments of historical significance as we undertake consideration of vertebrate pest control in its many phases. The earlier documents available to us reveal that with every expansion or westward advance into newer areas of agricultural production or livestock enterprises there also arose a variety of pest animal problems. However, it …

Control Methods For Snakes , Elbert M. Brock, Walter E. Howard

Vertebrate Pest Conference Proceedings: 1st (1962)

Of the various types of wildlife that home owners find undesirable, snakes are probably the leading offenders. Because of much false teaching, many persons have a great dread of even non-venomous snakes; hence control often is practiced when not needed. Nevertheless, very few people are willing to accept the presence of snakes in their gardens or their yards, especially if there is a concern for children playing in the area. For this reason snake control is often desirable about homes and suburban housing areas. Other situations where controls might be justified are recreation areas, farms, bird sanctuaries, duck nesting marshes, …

Methods Of Controlling Coyotes, Bobcats, And Foxes, Weldon B. Robinson

Vertebrate Pest Conference Proceedings: 1st (1962)

In reviewing methods of predator control, it would first seem appropriate to define what is meant "by "methods" and what is meant by "control." Taking the last term first, control, as applied to the predatory coyotes, bobcats, and foxes, may be defined as regulating the numbers of these animals to the point where the economic losses for which they are responsible will be reduced to a practicable minimum. In some situations, area control, i.e., limiting the numbers of the offending predator over wide areas, may be necessary for satisfactory reduction of economic losses; in other situations, spot control or localized …

Wolf Control In British Columbia, Canada, G. A. West

Vertebrate Pest Conference Proceedings: 1st (1962)

Up to 1949, the Fish and Game Branch employed personnel, some of whom were temporary, to attempt control of the extremely high wolf pop¬ulations of the central and northern portions of British Columbia. Coyotes were also very numerous in the central and southern regions and had to be considered because of their depredations. The field men were keen and conscientious but their efforts were not co-ordinated. Control areas were severely restricted in size as techniques were not adaptable enough and because of a lack of manpower. Eventually, sheepmen went out of business entirely over wide areas, cattlemen were subjected to …

Meeting The Meadow Mouse Menace, William D. Fitzwater

Vertebrate Pest Conference Proceedings: 1st (1962)

The orchardist has many ways to lose money but one of the best is to ignore his mouse problem. This apparently insignificant, short-tailed little rodent by his unobtrusive but systematic attacks on the growing tissue of trees can be very expensive. The Indiana Extension Horticulturist has stated that mice are the number one cause for orchardists going out of business in recent years in that State. Moreover, the problem is not a recent one as a questionnaire to county agricultural agents in 1924 (Davis, 1925) showed that field mice were even then considered a problem in 40 per cent of …

Control Of Opossums, Bats, Raccoons, And Skunks, Howard A. Merrill

Vertebrate Pest Conference Proceedings: 1st (1962)

Opossums at times cause economic losses, especially around poultry farms, truck crops and river bottom corn fields. Under such circumstances, control may be required.

When bats invade homes and occupied buildings to establish their roosts, they often become nuisances, necessitating some measure of control. Interest in bats has increased greatly during recent years due to the transmission of rabies to humans. Rabies virus has been isolated from over 20 species of bats in 36 States. Since 1953, five human deaths have been attributed, to rabid bat bites. More recently one field investigator has reported an experience which indicated that rabies …

Mole And Woodrat Control, Rex E. Marsh

Vertebrate Pest Conference Proceedings: 1st (1962)

MOLES: In regions where moles thrive, lawns in golf courses, parks, cemeteries and home yards are often made unsightly by dirt mounds and ridges pushed up by the active little animals. In cultivated land, moles may cause consider¬able economic loss through their burrowings. Mole control can be divided into six basic categories: exclusion, repellents, gases, toxic baits, reduction of food supply, and trapping. Un¬changed over the years, trapping is still considered the most reliable of all methods of control, however, under certain conditions or situations, the other methods of control may be extremely useful. WOOD RATS: The native wood rat …