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Arnoldia Kuesii, A New Juvenile Fernlike Plant From The Lower Permian Of New Mexico, William D. Tidwell, Sidney Ash

Faculty Publications

A nearly complete juvenile fernlike plant is described here from Lower Permian rocks of New Mexico. The fossil consists of a horizontal rhizome with roots, a short thick upright aerial branch, and a tuft of dimorphic leaves. It is assigned to Arnodia kuesii gen. et sp. n. and appears to be the first juvenile fernlike plant known from the Upper Paleozoic. Abundant palynomorphs and other plant fossils associated with the fossil indicate that it is Early Permian in age.

Algebraic Geometry For Computer-Aided Geometric Design, Thomas W. Sederberg, Ronald N. Goldman

Faculty Publications

Classical algebraic geometry has been virtually ignored in computer-aided geometric design. However, because it deals strictly with algorithms, it is really more suited to this field than is modern algebraic geometry, which introduces abstractions far removed from the algorithmic nature of computer-aided design. This tutorial examines resultants, curve implicitization, curve inversion, and curve intersection. Discussion follows a series of examples simple enough for those with only a modest algebra background to follow.

Habitat Suitability Index Model For The Black-Footed Ferret: A Method To Locate Transplant Sites, B. R. Houston, Tim W. Clark, S. C. Minta

Great Basin Naturalist Memoirs

A habitat suitability Index Model (HSI), following the U.S. Fish and Wildlife Service HSI Model Series, is described for the black-footed ferret. The literature on which the model is based is reviewed, and model assumptions and structure are discussed. A realistic model is specified with variables and their functions that embody the critical spatial and resource heterogeneity characteristic of the broad geographic environment ferrets occupy. It assumes that ferrets can meet year-round habitat requirements within prairie dog colonies providing: (1) prairie dog colonies are large enough, (2) burrows are numerous enough, and (3) adequate numbers of prairie dogs and alternate …

Determing Minimum Population Size For Recovery Of The Black-Footed Ferret, Craig R. Groves, Tim W. Clark

Great Basin Naturalist Memoirs

A minimum viable population (MVP) size is estimated for the critically endangered black-footed ferret by examining five basic methods: experiments, biogeographic patterns, theoretical models, simulation models, and genetic considerations. Each method is evaluated for its applicability to the feret and endangered species in general with two criteria in mind: (1) potential research impacts to target species and (2) the value of scientific accuracy and precision in relation to short-term conservation needs. For the black-footed ferret, the genetic method proved to be the most useful, resulting in an MVP estimate of about 200 ferrets for maintenance of short-term fitness. For most …

Estimates Of Site Potential For Douglas-Fir Based On Site Index For Several Southwestern Habitat Types, Robert L. Mathiasen, Elizabeth A. Blake, Carleton B. Edminster

Great Basin Naturalist

Estimates of site potential for Douglas-fir based on measured site indexes in 450 stands are compared between 10 southwestern habitat types. Significant differences in site potential are found between the habitat types studied.

Free-Form Deformations In A Constructive Solid Geometry Modeling System, Scott R. Parry

Theses and Dissertations

No one will question that computers are revolutionizing the design industry. It is pointed out in [Bezier84] that before CAD/CAM, a surface was defined by tracing cross sections on a drawing and then carving these sections in wood, plastic or metal. The final model was determined by someone interpolating between the sections. This labor intensive art is being replaced by techniques of computer aided geometric design.

Cch And The Pursuit Of Academic Excellence, 1955-1964, Kenneth Wayne Baldridge

Mormon Pacific Historical Society

No abstract provided.

Effect Of Feedback On State Anxiety And Performance While Learning Arabic Vocabulary Through Computer Assisted Instruction, Aniseh Hanania

Deseret Language and Linguistic Society Symposium

No abstract provided.

My Ivy League Education, An Autobiography: 1967-71, Wayne Taylor

Inscape

I was seven years old, leaving what I thought was Eden for the northeastern United States. The jungle, our backyard, a tangled and mysterious playground filled with loud birds, lizards , and an occasional snake, fell away in the noise and rush of Managua and the scream of propellers. Nicaragua slipped into memory: hunting iguana on hot Sunday afternoons, the warm chatter of rain on our tin roof, and volcanoes to the south and west, smoking redly through the nights. Left behind was the string hammock woven with bright red and green designs in which my sister and I had …

Old Testament And Related Studies, Hugh Nibley

Maxwell Institute Publications

In December 1832, the Lord instructed the Prophet Joseph Smith, “Seek ye diligently and teach one another words of wisdom; yea, seek ye out the best books words of wisdom; seek learning, even by study and also by faith.”

Few members of the Church have followed that admonition as faithfully as has Hugh Nibley, emeritus professor of ancient history at Brigham Young University. As a young man he memorized vast portions of Shakespeare and studied Old English, Latin, Greek and other languages. As a student at Berkeley, in he began reading the southwest corner of the ninth level of the …

A Thoughtful Faith: Essays On Belief By Mormon Scholars, Philip L. Barlow

Books

No abstract provided.

Interconnected Reproductive And Vegetative Remains Of Populus (Salicaceae) From The Middle Eocene Green River Formation, Northeastern Utah, William D. Tidwell, Steven R. Manchester, David L. Dilcher

Faculty Publications

A new specimen from the Middle Eocene Evacuation Creek Member of the Green River Formation in northeastern Utah shows a twig with several leaves of Populus wilmattae Crockrell and a fruiting raceme attache. This specimen establishes for the first time the type of fruits borne by P. wilmattae and provides additional characters with which to assess its taxonomic and evolutionary status. An associated seed shows attached placental hairs like those of extant species of Populus. The Green River fossil differs from extant Populus species in having basically palmate leaf venation and in bearing its fruiting axis on a young twig. …

Agriculture, Agribusiness, And Renewable And Natural Resource Program Review, B. Delworth Gardner

Faculty Publications

The State University System of Florida has es tab 1 i shed A "Quest for Excellence11 in its Master Plan. It is a bold plan of action that will "unleash the University System from those time-bound constraints which would allow only gradual change. 11 It is also clear that the State University System of Florida plans to compete successfully with the very best academic universities. In its mission statement the University of Florida, as a land-grant institution, administers the In"s·t itute of Food and Agricultural Sciences (IFAS), a special unit providing statewide food and .agricultural teaching, res.earch, and extension services. …

A Generalized Information Structure To Be Used In A Human-Factors Knowledge Base, Bruce J. Wachlin

Theses and Dissertations

The purpose of this thesis is to design a generalized information structure that can be used in a human-factors knowledge base. The information structure will take into account the human factors requirements and the hardware characteristics of the system. In this thesis the design and implementation of several prototype systems of a generalized information structure to be used in a human-factors knowledge base are presented.

Spencer W. Kimball At College, Edward L. Kimball

BYU Studies

No abstract provided.

In Memoriam: William Wallace Newby (1902–1977), William H. Behle

Great Basin Naturalist

W. W. Newby, professor of biology at the University of Utah from 1927 to 1971, was renowned as a great teacher and a clear and forceful writer and for his meticulous research in invertebrate embryology. Ancillary skills were counseling (especially of premedical students), illustrating, wood crafting, and paper preserving. Some of his writings pertained to the history of research in the biological sciences at the University of Utah. His specialty areas in teaching were embryology and genetics, and he served as chairman of the Department of Genetics and Cytology from the year of its creation in 1948 until 1962. The …

“Play It Again, Sam”: The Remarkable “Prophecy” Of Samuel Lutz, Alias Christophilus Gratianus, Reconsidered, Paul B. Pixton

BYU Studies

No abstract provided.

“Den Göttern Gleich Ich Nicht”: The Nature Of Faust's Salvation, Garold N. Davis

BYU Studies

No abstract provided.

A Generalized Molien Function For Field Theoretical Hamiltonians, Jeffrey W. Felix, Dorian M. Hatch

Faculty Publications

A generating function, or Molien function, the coefficients of which give the number of independent polynomial invariants in G, has been useful in the Landau and renormalization group theories of phase transitions. Here a generalized Molien function for a field theoretical Hamiltonian (with short-range interactions) of the most general form invariant in a group G is derived. This form is useful for more general renormalization group calculations. Its Taylor series is calculated to low order for the FGamma-2 representation of the space group R[3 bar]c and also for the l=1 (faithful) representation of SO(3).

My Life, Hans Banziger

Swiss American Historical Society Newsletter

One of my very young students having gotten once the task to write on his short lifetime introduced his witty essay with the remark that curricula vitae reminded him always of necrologies. He went on, using the fiction of a minister's sermon, to describe his career: "A promising young life came abruptly to an end; Karl X had wanted to become a teacher, but his grades were not good enough ... ". Thus, you might understand, why I myself hesitated a little when Marianne Burkhard asked me to write about my life. Memoirs always sound a little bit sad. But …

Full Issue

Swiss American Historical Society Newsletter

No abstract provided.

Johann Sebastian Bach And George Frederick Handel: In Remembrance Of The Three-Hundredth Anniversary Of Their Births, Hans-Wilhelm Kelling

BYU Studies

No abstract provided.

The Effects Of Religious Affiliation And Attendance On Illicit Sexual Behavior And Substance Abuse, Thomas W. Zane

Theses and Dissertations

A sample of 7724 college students in Washington and Utah was selected to study the relationships of religious activity and religious affiliation to illicit sexual behaviors, use of marijuana, and getting drunk. For all religious affiliations (except for the Jews), there were significant correlations between church activity and the measured illicit behaviors. LDS rates of behavior were significantly lower at <.001 for the five illicit behaviors. Two factor analyses were calculated to determine which sexual behaviors would load on a single factor and which substances would load on another factor. Extramarital coitus, heavy petting, and passionate kissing formed the first "sexual" factor. The use of beer, liquor, and marijuana combined with the behavior getting drunk to form the "substance-abuse" factor. A canonical analysis reported a moderate relationship with a canonical coefficient of .534 between the two factors. A discriminant analysis based on each subjects' religious affiliation and activity level yielded a 70-80 percent correct classification percentage.

Set Theory As An Explanation For The Selection Between Más Que/Más De In Spanish, J. Halvor Clegg, Mark Seely

Deseret Language and Linguistic Society Symposium

No abstract provided.

Unification In Linguistic Computing, Martin Kay

Deseret Language and Linguistic Society Symposium

No abstract provided.

The Banyan: A Partially Ordered Syntactic Structure With Reintersection, Dan W. Higinbotham

Deseret Language and Linguistic Society Symposium

No abstract provided.

An Information Theoretic Interpretation Of The Variable Rule, Matthew R. Sorenson

Deseret Language and Linguistic Society Symposium

No abstract provided.

Analogical Descriptions Of Variation, Royal Skousen

Deseret Language and Linguistic Society Symposium

No abstract provided.

Example Of A Group Action Determined Phase Transition, Jeffrey W. Felix, Dorian M. Hatch

Faculty Publications

The principles of the group action approach to structural phase transitions are outlined. It is assumed that all properties of the transition are determined by the action of a single physically irreducible represention of the space group of the more symmetric phase. We determine the isotropy groups using the image space of the representation. The free energy minima are determined to fourth order and to all orders using the results of Gufan and then compared. This theory is applied to Calcite (Roverline3c) to determine all possible continuous commensurate phase transitions.

Flora Of The Lower Cretaceous Cedar Mountain Formation Of Utah And Colorado; Part Iii, Icacinoxylon Pittiense N. Sp., William D. Tidwell, Gregory F. Thayn, W. L. Stokes

Faculty Publications

Icacinoxylon pittiense, a new species of angiospermous wood from the Lower Cretaceous Cedar Mountain Formation of Utah is described and compared with similar fossil and modern woods. It is distinguished from other species of Icacinoxylon by its thick-walled fiber-tracheids with their walls making up at least 50% of the total diameter of the cells, conspicuous bordered pits with obliquely crossing extended apertures on both the tangential and radial walls of its fiber-tracheids, scalariform perforation plates with as few as four or greater than 30 bars, transitional opposite to scalariform pitting on its vessel walls, thick-walled ray cells, and distinct sheath …