Digital Commons Network^™

Comment On “Microdosimetry And Katz’S Track Structure Theory” By Marco Zaider, Robert Katz

Robert Katz Publications

To test radiobiological models one needs data from X- or γ-ray and HZE track segment irradiations of the widest possible dynamic range in dose, LET, end points, and test objects (enzymes, viruses, bacteria, cells, tissues, organs, and organisms). Some data are currently available. There are excellent data on the inactivation of dry enzymes and viruses which should serve as a test of every biophysical model. On many occasions Zaider has asserted the superiority of microdosimetric over track structure models, asserting that “radial dose distributions (on which track structure theory is based) are generally poor substitutes for exact microdosimetric distributions.” I …

Leibniz — Beyond The Calculus, Hardy Grant

Humanistic Mathematics Network Journal

No abstract provided.

Mathematics And Philosophy: The Story Of A Misunderstanding, Gian-Carlo Rota

Humanistic Mathematics Network Journal

No abstract provided.

The Hermeneutics Of Mathematical Modeling, David Tudor

Humanistic Mathematics Network Journal

No abstract provided.

Ultimately, Mathematics Is Poetry, Alfred Warrinnier

Humanistic Mathematics Network Journal

No abstract provided.

Appendix To The Final Report Of The Rfac. Statistical Summary Of Public Responses To Key Issues., Recreational Fishing Advisory Committee Western Australia.

Fisheries Management Papers

This paper has been published as a separate appendix to the final report of the Recreational Fishing Advisory Committee, and should be read in conjunction with it, and the Committee's discussion paper ("Final report of the Recreational Fishing Advisory Committee - Fisheries Management Paper No. 41 1991). The key issues that were identified in the discussion paper came up under the following headings: 5.1 Environment 5.2 Resource Sharing 5.3 Access for Fishing 5.4 Research 5.5 Management rules 5.6 Enforcement 5.7 Charter fishing 5.8 Funding and licensing 5.9 Community consultation 5.10 Public awareness and community education.

The Probe, Issue 110 - May 1991

The Probe: Newsletter of the National Animal Damage Control Association

THE PROBE
National Animal Damage Control Association
MAY 1991
NADCA News From Great Plains Wildlife Damage Control Workshop
Student Awards Presented
By-laws Amended, Approved
Bill Fitzwater Recognized at NADCA Meeting
Membership Contest to Begin
Logo Contest to Begin
ADC Practices Are Generally Consistent With Legislation and Guidance
Animal Damage Control in the News
Mountain Lions Kill 10 Sheep in Nevada
Snow Geese Devastate Oklahoma Spinach Crop
Coyotes Troubling To Idaho Homeowners
Predator Platforms Deter Honey-Seeking Bears
Nutria Cause Major Damage in Sugar Cane
Mountain Lion Appears in Irvine, California Backyard
WLFA Wants to Protect “Your Right to Hunt, Trap, and …

Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, May 1991, College Of Engineering And Computer Science, Wright State University

BITs and PCs Newsletter

A six page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.

On The Relationship Between Parsimonious Covering And Boolean Minimization, Venu Dasigi, Krishnaprasad Thirunarayan

Kno.e.sis Publications

Minimization of Boolean switching functions is a basic problem in the design of logic circuits. The designer first comes up with a switching function expressed in terms of several binary input variables that satisfies the desired functionality, and then attempts to minimize the function as a sum of products or product of sums. It turns out that a sum of products form of a switching function that has no redundancy is a union of prime implicants of the function.

In this paper we would like to explicate some of the relationships of the boolean minimization problem to a formalization of …

Effects Of The Conservation Reserve Program On Selected Wildlife Populations In Southeast Nebraska, Justin W. King

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Determining If Self-Guided Demonstration Tours Are An Effective Method To Inform Farmers And Ranchers About Conservation Practices, Larry L. Andelt

Department of Agricultural Leadership, Education, and Communication: Dissertations, Theses, and Student Research

The primary purpose of this study was to determine if the "Conservation Neighbor to Neighbor" program was an effective method of delivery to inform farmers and ranchers about conservation practices in Nebraska. A survey instrument was developed with the help of a committee of experts. The instrument asked respondents to rate the degree of agreement, quality and interest in the Conservation Neighbor to Neighbor program and the effectiveness of the delivery method. The population for the study included all the program hosts and a random sampling of all farmers and ranchers in Nebraska. The following conclusions were drawn from the …

Rbe Vs. Dose For Low Doses Of High-Let Radiations, Robert Katz, F. A. Cucinotta

Robert Katz Publications

(LET) radiations varies with cellular radiosensitivity parameters and the radiation environment. Of special interest is that the RBE varies as the dose of high-LET radiation to the power (1/m - 1) where /m is the “target number” parameter, which varies from 2-4 in different cell lines. This applies to neutrons as well as to heavy ions at sufficiently low doses such that cells are not activated in the γ-kill mode; that is, the tracks of single heavy ions are sufficiently far apart so that there are few cases of inter-track inactivation.

The Ecology Of Franklin's Ground Squirrel In Indiana, Peter M. Benjamin

All-Inclusive List of Electronic Theses and Dissertations

A reduction in the distribution of the Franklin's ground squirrel in the eastern portion of its range has led to its classification as a threatened species in Indiana. Information is lacking on this species' habitat requirements and population characteristics in Indiana, which limits management capabilities. The purpose of this study was to identify preferred habitat and population characteristics of the Franklin's ground squirrel in Indiana. Radio telemetry was conducted from April 1987 to September 1988 at 3 sites along a railroad right-of-way (ROW} in Benton County, Indiana. Land use and habitat types were mapped; species composition, density, percent cover, percent …

Is Rainbow Trout Condition Influenced By Invertebrate-Drift Density?, Randall B. Filbert

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Users of the Instream Flow Incremental Methodology CTFIM) commonly assume that there is a positive linear relationship between available habitat (WUA) and stream fish biomass. However, several studies have shown a lack cf correlation between WUA and biomass. Such poor relationships may occur if other factors limit fish abundance. Food availability is a potentially important factor limiting abundance of stream fishes and can affect blomass by influencing fish condition (individual weight). I collected rainbow trout (Oncorhynchus mykiss) exposed to different levels of invertebrate-drift density to determine if condition was greater where food was more abundant. I also examined …

Linear Operators Strongly Preserving Polynomial Equations Over Antinegative Semirings, Sang-Gu Lee

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

We characterized the group of linear operators that strongly preserve r-potent matrices over the binary Boolean semiring, nonbinary Boolean semirings, and zero-divisor free antinegative semirings. We extended these results to show that linear operators that strongly preserve r-potent matrices are equivalent to those linear operators that strongly preserve the matrix polynomial equation p(X) = X. where p(X) = X^r₁ + X^r₂ + ... + X^r_t and r₁>r₂>...>r_t≥2.

In addition, we characterized the group of linear operators that strongly preserve r-cyclic matrices over the same semirings. We …

Indifference Graphs And The Single Row Routing Problem, Peter J. Looges

Computer Science Theses & Dissertations

This thesis investigates the subclass of interval graphs known as indifference graphs. New optimal algorithms for recognition, center, diameter, maximum matching, Hamiltonian path and domination in indifference graphs are presented. The recognition algorithm produces a linear order with properties which allow the solution of the other problems in linear time. Indifference graphs are further applied to the single row routing problem which results in both sequential,. and parallel routing algorithms.

Microwave Treatment Of Hazardous Wastes : Chemical Fixation Of Insoluble Non-Volatile, Chemically Non-Reactive Organics In Soil, Naihong Zhu

Theses

Microwave treatment of hazardous wastes like dioxin-contaminated soil potentially fills a great need for a remediation technology which potentially can be applied in-situ: the EPA has concluded from a risk assessment study that it is the excavation and transportation of such wastes that poses the greatest risk. Studies have been carried out on a surrogate for dioxin, namely, 9,10-anthraquinone because it has similar chemical and physical properties but it is not toxic. It was found in microwave treatment studies that, at temperatures attainable in-situ, anthraquinone became non-extractable. A model was proposed which postulated that as water was removed from soil …

The Limitations Of Women In Science At Six Midwestern Colleges Due To The Adherence To Conceptions Of Gender Differences Between The Sexes In The Years Of 1880 Through 1940, Denise Mohney '91

Honors Projects, History

It is difficult for college students today to imagine life when the term "discrimination" had not yet been defined or conceived. Yet only a little more than a hundred years ago women were first entering the academic world alongside men. These were often middle class women whose primary interactions with men had been through courtship and marriage. It was questioned whether women's intellectual ability and physical stamina were strong enough to persevere through the college experience. Scientists and physicians, writing for the general public, cited evidence that besides physical distinctions between the sexes, there were also intellectual and emotional differences. …

Electrostatically Paired Porphyrin And Phthalocyanine: Equilibria And Electrochemical Oxidation, Libin Ho '91

Honors Projects

A synthetic model system for the special pair in the photosynthetic reaction center of bacteria has been prepared from electrostatically paired porphyrin and phthalocyanine molecules. Use of rigorously dry propylene carbonate as the solvent allowed complex fonnation to occur between tetra-(N-methyl-4-pyridyl)porphyrin hexafluorophosphate (H2TMPyP(PF6)4) and tetraphenylphosphonium tetrasulfatophthalocyanine (Ph4P)4H2TSPc molecules. The stoichiometry of the complex was determined to be 1:1 by Job's method and the pair formation constant K1 was estimated to be 1x108.T he dependence of K1 on ionic strength was studied at various concentrations of tetra-n-butylammonium tetrafluoroborate BU4NBF4. With increasing ionic strength K1 decreases as expected according to the Debye-Huckellimiting …

The Annual Meeting Of The Iowa Academy Of Science April 19-20, 1991 [Program, 103rd Meeting], Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

Program Summary --- 5
General Session Speakers --- 10
Awards --- 13
Distinguished Fellow --- 13
Distinguished Iowa Scientist --- 14
Symposia Programs --- 15
Poster Session --- 18
Campus Map --- Centerfold
Section Programs --- 19
Agricultural Sciences --- 20
Anthropology --- 21
Botany --- 21
Cellular & Molecular Biology --- 23
Chemical Education --- 27
Chemistry, Inorganic --- 27
Chemistry, Organic --- 29
Conservation --- 31
Earth Science Teaching --- 32
Elementary Science Teaching --- 32
Engineering --- 32
Geology --- 35
Linguistics --- 37
Nursing --- 38
Physics --- 38
Physiology --- 39
Psychology --- 40 …

Program Abstracts, 103rd Session, Iowa Academy Of Science, April 19-20, 1991, Iowa Academy Of Science

Iowa Academy of Science Documents

Presentation abstracts from the annual meeting of the Iowa Academy of Science

Volume 2 - April 18, 1991

What on Earth

What on Earth was a short-run student publication by the Providence College Environmental and Wildlife Club. (Volume 2 - April 18, 1991 - 8 pages total.)

What's In A Name?, Robert S. Cook

Great Plains Wildlife Damage Control Workshop Proceedings

Communication is a vital part of this complex world in which we live. Even with the vast vocabulary that has evolved throughout recorded history, we still often find difficulty in expressing ourselves. As receivers of information, we struggle to grasp what the other person is trying to say. Also, when we speak to others, we struggle for the right words to use so that we can convey to that person exactly what we mean. The words we use and how we use them are very important to us as we communicate with each other. We have all experienced a time …

Environmentalism And Animal Welfare: Cornerstones Of Wildlife Damage Management, Rick D. Owens

Great Plains Wildlife Damage Control Workshop Proceedings

There are two issues which each of us, personally and as professional wildlife biologists, share a belief in, and which are essential to the conduct of our day-to-day wildlife management activities. Unfortunately, because of associated negative implications, we have failed to appropriately acknowledge and receive credit for our concerns regarding these issues. These are the issues of environmentalism and animal welfare. This discussion will serve to clarify what these terms should mean to us, why they should be considered cornerstones of wildlife damage management, and the actions we must take in addressing these issues. It is imperative that we become …

An Update On The Revision Of The Handbook, "Prevention And Control Of Wildlife Damage", Scott E. Hygnstrom, Robert M. Timm, Gary A. Larson

Great Plains Wildlife Damage Control Workshop Proceedings

Wildlife species have an important role in our environment and they provide many recreational, economic, and aesthetic benefits. Management of these species is necessary, however, when they cause damage to agricultural, industrial, and natural resources, and threaten personal property, public health, and safety. Published estimates indicate that commensal rodents, field rodents, and predators combined, cause >$2 billion in damage in North America annually. Because of the social and economic impacts of wildlife damage, there is a need for up-to-date information on the prevention and control of wildlife damage for producers, resource managers, administrators, and the public. The book, "Prevention and …

Damage Due To Scent Marking By Eastern Gray And Fox Squirrels, John L. Koprowski

Great Plains Wildlife Damage Control Workshop Proceedings

The stripping of bark by eastern gray squirrels (Sciurus carolinensis) is a serious problem in England with 50 to 100% of the trees damaged in some locations (Shorten 1957). The economic consequences of such damage have resulted in much research (Kenward 1982, 1983; Kenward and Parish 1986); squirrel-induced damage to trees also occurs in North America (Allen 1943, Brenneman 1954) but is rarely of the magnitude observed in England. At least 10 hypotheses (reviewed by Kenward 1983) have been suggested to account for bark-stripping damage including: 1) reduction of tooth wear; 2) uncontrolled gnawing reflex; 3) source of nesting material; …

Seasonal And Site Differences In Food Consumed By Double-Crested Cormorants In Arkansas, Albert E. Bivings

Great Plains Wildlife Damage Control Workshop Proceedings

Double-crested cormorants (Phalacro-corax auritus) are a common migrant in Arkansas in the fall and spring. In most years, many linger until freeze-up prior to moving south. In south Arkansas, they may overwinter if climactic conditions are not too severe. Although they were formally year-round residents, there are no current reports of substantial breeding flocks in the state. According to band returns, most cormorants found in Arkansas come from North and South Dakota, Wisconsin, Saskatchewan, or Manitoba (James and Neal 1986).

Previous investigations by Bivings et al. (1989) and Campo et al. (1988) reported that gizzard shad (Dorosoma cepedianum) comprised the …

Relative Effectiveness Of Repellents For Reducing Damage By Elk, William F. Andelt, Dan L. Baker, Kenneth P. Burnham

Great Plains Wildlife Damage Control Workshop Proceedings

We tested the repellency of chicken eggs, MGK' Big Game Repellent (BGR), coyote (Canis latrans) urine, thiram, Hinder', Hot Sauce Animal Repellent' (Hot Sauce), and Ropey on captive tame elk (Cervus elaphus) in Colorado from December 1990 to February 1991. Coyote urine and BGR performed better than the other repellents for deterring elk from feeding on cubed alfalfa rations. Consumption of cubed rations treated with odor repellents increased from Day 1 through Day 5 of the trial, but consumption of thiram-treated rations decreased. During the second phase of the study, hungry elk consumed significantly more apple twigs that were treated …

Burrow-Building Strategies And Habitat Use Of Voles In Pacific Northwest Orchards, Leonard R. Askham, James Sipes

Great Plains Wildlife Damage Control Workshop Proceedings

Seidel and Booth (1960) wrote that the "life histories of the genus Microtus are not numerous in the literature." In support of his observation he cited 6 publications, all dated between 1891 and 1953. Since then the literature has exploded with a proliferation of publications. An international literature review recently revealed over 3,500 citations for the genus. When Pitymys and Clethrionomys are included another 350 and 1,880, respectively, were found. Over the last 10 years approximately 3 new publications on voles appeared every 4 days; a significant output for what some would consider such an insignificant species. Most of the …

Keynote Address: The Ideal Realist: How Job Realities Shape Ideology And The Role Of Natural Resource Professionals In Today's Environment, Gary J. San Julian

Great Plains Wildlife Damage Control Workshop Proceedings

I am now Vice President for Research and Education for the National Wildlife Federation (NWF)—the world's largest conservation organization. The Federation has 5.6 million members and supporters. In this position, I no longer have a small clientele of a few thousand people. In this position, hundreds of thousands of people watch NWF very closely. We have a real slice of American life in the Federation. Consequently, I have had the opportunity to see things in a broader perspective; I have been forced to broaden my horizons. What I see now causes me great concern. I see changes in the way …