Physical Sciences and Mathematics Commons^™

Optimal 2,3-Trees, Nicholas J. Pippenger, Raymond E. Miller, Arnold L. Rosenberg, Lawrence Snyder

All HMC Faculty Publications and Research

The 2,3-trees that are optimal in the sense of having minimal expected number of nodes visited per access are characterized in terms of their “profiles”. The characterization leads directly to a linear-time algorithm for constructing a K-key optimal 2,3-tree for a sorted list of K keys. A number of results are derived that demonstrate how different in structure these optimal 2,3-trees are from their “average” cousins.

On The Sampling Distribution Of Entropy Function, Pan Fu-Charo

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

Since the introduction of Shannon's Entropy Function in a non-probabilistic setting [l], there has been an expectancy that it will provide a useful measure for the fuzzy cluster validity problem. We hope to demonstrate here (empirically) by Monte Carlo simulation that the entropy Hc(U) of fuzzy c-partitions (U) defined below has expectaction

E(H_c(U)) = ∑^c_k=2 1/k

and variance

Var(H_c(U)) = 1/n(∑^c_k=2 1/k₂ - (c-1)/(c+1)(π²/6) - 1).

Furthermore, for sufficiently large n, that H is approximately normal.

In this report we propose a method which generates the required fuzzy matrix …

Mechanism Of ¹⁴N(T,P) To The Ground State Quadruplet In ¹⁶N, H. T. Fortune, Oleksa-Myron Bilaniuk, G. Stephans, R. Middleton

Physics & Astronomy Faculty Works

Complete angular distributions (8°-168°) have been measured for the ¹⁴N(t,p)¹⁶N reaction, at a bombarding energy of 15 MeV, leading to the lowest four levels of ¹⁶N. Results have been analyzed using distorted-wave Born approximation and microscopic wave functions. The approximate magnitude of the compound-nucleus component has been extracted. NUCLEAR REACTION ¹⁴N(t,p), E=15 MeV; ¹⁶N levels, deduced reaction mechanism and tested shell-model wave functions. DWBA analysis.

Protein Synthesis In Rabbit Reticulocytes: Characteristics Of A Postribosomal Supernatant Factor That Reverses Inhibition Of Protein Synthesis In Heme-Deficient Lysates And Inhibition Of Ternary Complex (Met-TrnaFMet•Eif-2•Gtp) Formation By Heme-Regulated Inhibitor, R. O. Ralston, A. Das, M. Grace, H. Das, N. K. Gupta

Chemistry Department: Faculty Publications

During heme deficiency in reticulocyte lysates, a translational inhibitor (heme-regulated inhibitor, HRI) that blocks polypeptide chain initiation is activated. HRI is a protein kinase that specifically phosphorylates the 38,000-dalton subunit of the Met-tRNA_f^Met binding factor, eIF-2. Phosphorylation of eIF-2 by HRI prevents its interaction with at least two additional factors, resulting in a net reduction in formation of ternary complex (Met-tRNA_f^Met eIF-2•GTP) and AUG-dependent transfer of Met-tRNA_f^Met to 40S ribosomal subunits. A factor (sRF) that reverses protein synthesis inhibition in heme-deficient Iysates has been purified from reticulocyte postribosomal supernatant. sRF also reverses the inhibition …

A Study On Gaseous Ebullitions Of De Gray Reservoir, Arkansas, David Pinkston

Honors Theses

This study was undertaken in order to determine the nature of and the factors that influence the gaseous ebullitions of De Gray Reservoir near Arkadelphia, Arkansas during a yearly cycle.

Two major types of gaseous ebullition are described in the literature. The first has to do with the production and ebullition of elemental oxygen from photosynthesis (Porcella et al., 1975). Hutchinson (1957) predicts that the formation of oxygen bubbles in this manner is limited to very shallow, well lighted, warm waters.

The second type of gaseous ebullition involves the anaerobic digestion of organic matter (Reeburgh, 1969). Anaerobic conditions exist in …

Plasma Polymerization Of Tetrafluoroethylene. Iii. Capacitive Audio Frequency (10 Khz) And Ac Discharge, N. (Nicholas) C. Morosoff, H. Yasuda, E. S. Brandt, C. N. Reilley

Chemical and Biochemical Engineering Faculty Research & Creative Works

The plasma polymerization of tetrafluoroethylene (TFE) is studied in a capacitively coupled system with internal electrodes using a 10 kHz (af) and a 60 Hz (ac) source. The emphasis is on identifying conditions that are compatible with continuous coating of plasma polymer on a substrate moving through the center of the interelectrode gap. Operation at a pressure below 100 mTorr is most favorable for deposition of a substantial portion of the plasma polymer on this substrate. Plasma polymer deposited in this way is characterized by ESCA and by deposition rate data and compared to that deposited using rf power in …

A Graded Bibliography On Macro Systems And Extensible Languages, John R. Metzner

Computer Science Faculty Research & Creative Works

No abstract provided.

Cndo Calculations On The Structure Of A Liquid Sodium Carboxylate-Carboxylic Acid Compound, Beverly Bendiksen, Stig Friberg, Patricia L.M. Plummer

Chemistry Faculty Research & Creative Works

The molecular interactions in a carboxylic acid/sodium carboxylate compound which is a liquid at room temperature were calculated using a CNDO/2 approach. The calculations gave results distinguishing the energy for different conformations in the molecular compound. The maximum binding energy was found for a structure in which the four acids were bridging with a hydrogen bond from the acid OH group to the carboxylate group and the acid carbonyl groups forming a ligand bond to the carboxylate sodium ion. © 1979 Academic Press, Inc.

A Simple Experiment Illustrating The Structure Of Association Colloids, Stig Friberg, Beverly Bendiksen

Chemistry Faculty Research & Creative Works

No abstract provided.

Plasma Polymerization Of Tetrafluoroethylene. Ii. Capacitive Radio Frequency Discharge, N. (Nicholas) C. Morosoff, H. Yasuda, E. S. Brandt, C. N. Reilley

Chemical and Biochemical Engineering Faculty Research & Creative Works

The plasma polymerization of tetrafluoroethylene (TFE) is studied in a capacitively coupled system with internal electrodes using radio frequency (13.56 MHz) power. The emphasis is on identifying conditions that are compatible with continuous coating of plasma polymer on a substrate moving through the center of the interelectrode gap. At high pressure (500 mTorr), deposition of plasma polymer is primarily on the electrodes rather than on a substrate placed midway between electrodes. Glow is observed in only part of the interelectrode gap at low powers and fills the gap only at high power levels. The use of a magnetic field effects …

Electrical Resistivity Studies Of Order-Disorder Phenomena In V2h And V2d, Gust Bambakidis, M. W. Pershing, R. C. Bowman

Physics Faculty Publications

No abstract provided.

Hydrogeologic Investigation Of A Landfill Site In Washington County, Arkansas, Albert E. Ogden, Carlos J. Quintana

Journal of the Arkansas Academy of Science

A proposed landfill site near Wheeler, Washington Co., Arkansas, was investigated for its hydrogeologic suitability. The site is located on the highly fractured, cavernous, and cherty Boone Ls. The site is a small upland valley 4500 ft. north of Clear Creek. The valley containing the proposed site is a karst dry valley in which precipitation rapidly infiltrates, recharging the water table and local springs. The water table around the site was mapped to determine the hydraulic gradient and direction of ground-water movement. The water table slopes in a SE direction from the landfill towards Clear Creek with a steep hydraulic …

Separation Of 1,3-Pentadiene With Molecular Sieves, Steven R. Schwinn

Retrospective Theses and Dissertations

The feasibility of separating piperylene (1,3-pentadiene) from a mixture of five-carbon olefins and diolefins with Linde 5A Molecular Sieves was investigated. Olefins and especially diolefins are very reactive and tend to polymerize on the highly polar adsorptive surface thereby clogging the pores of themolecular sieve. It is believed that the acid sites within the zeolite cages catalyze this polymerization reaction and that poisoning of these sites by adsorption of a nitrogenous base (ethylenediamine, dimethylamine or ammonia) or hydrogen sulfide inhibits the formation of polymers. Two criteria were used in the evaluation of the polymerization inhibitors tested. First, a series of …

Nitrogenous Fertiliser Requirements In Different Cropping Rotations - 1979 Results, M G. Mason, I Rowland

Experimental Summaries - Plant Research

Nitrogen requirement of wheat after clover, lupins and cereal - 78C1, 78N1. Nitrogen requirement of barley after clover, lupins and cereal - 78E3. Nitrogen fertiliser requirement in alternate crop-pasture rotation. Botanical composition of Pasture blocks (Sampled 16/9/79) - 78BA1. Pasture Blocks (Sampled 3/9/79) - 78WH2.

Fallow Re-Assessment, D Tennant

Experimental Summaries - Plant Research

Fallow re-assessment. I. 72M29. Location - Merredin Research Station II. Other fallow results. As part of the fallow re-assessment project, a study was made of results from all trials done since the early 1920's which either compared fallow with non fallow or examined other aspects of fallowing. Analysis of these data has led to an update of some of the rainfall - soil water storage - yield relationships presented in previous reports. On the basis of these rainfall-yield relationships and of relevant rainfall statistics we can make an assessment of the probable value of fallow at different locations; Merredin; Chapman, …

Historical Evolution Of Coastal Sand Dunes On Currituck Spit, Virginia/North Carolina, Harold F. Hennigar

Dissertations, Theses, and Masters Projects

No abstract provided.

Long Term Rotation Trials, I Rowland

Experimental Summaries - Plant Research

Locality: 66M29, 67Cl3, 67N4, 68E5, 68SG5, 73SG16. Soil type, history, rainfall and wheat/lupin yields.

Problems In Chesapeake Bay Of Mutual Interest To The State Of Maryland And The Commonwealth Of Virginia, J. Claiborne Jones, John B. Pleasants

Reports

The Chesapeake Bay, one of the largest and most productive estuaries in the world, represents a vast natural, economic, and social resource for the citizens of the surrounding land area. The Bay is many things to many people. Much of the economic development of the entire region has been based upon the natural transportation network and the fisheries industry provided by the Bay and its tributaries. The Bay system also offers a wide variety of water-oriented recreational opportunities, a source of water for both residential and industrial users, and a site for the final disposal of many waste products. The …

Shoreline Situation Report King George And Caroline Counties, Lynne C. Morgan, Dennis W. Owen, Nancy M. Strum, Robert J. Byrne, Carl H. Hobbs Iii

Reports

No abstract provided.

Excitation Of Cd, Zn, And Sr By A Beam Of Active Nitrogen, D. W. Fahey, William F. Parks, Laird D. Schearer

Physics Faculty Research & Creative Works

Excitation of the electronic levels of Cd, Zn, and Sr is observed when these metal vapors collide with a thermal-energy, active nitrogen beam. The beam is extracted from a glow discharge in pure N2. The active beam component is inferred to be vibrationally excited N2 in the A 3Σu+ electronic state. The absolute relative intensity of the emission lines in each element was measured. The excitation rates of the Cd and Zn target levels were found to depend exponentially on their energies indicating an effective temperature of approximately 4000°K. We believe that this temperature is related to the vibrational temperature …

Broadwater Nw Quadrangle, Morrill County, Nebraska, Robert F. Diffendal Jr.

Robert F. Diffendal, Jr., Publications

7.5' topgraphic quadrangle showing exposures of bedrock formations and other geologic information.

41° 37'30" — 41° 45'

102° 52'30" — 103° 00'

Scale 1:24,000

Completed June 25, 1979

High resolution .tif file attached below as supplemental file

Nebraska Rainbow Trout, Nebraska Game And Parks, G. Zeurlein, L. Hesse, J. Seeb, L. Wishard

Nebraska Game and Parks Commission: Publications

Chapter 1 Lethal and Preferred Temperatures of Lake McConaughy Rainbow Trout Versus Domestic Strain Rainbow Trout By R. Vancil, G. Zuerlein and L. Hesse

Chapter 2 A Nitrifying Filter-Cooling Condenser System for Total Water Re-use in Cold-Water Fish Holding or Rearing Applications By L. Hesse, G. Zuerlein and R. Vancil

Chapter 3 Biochemical Genetic Analysis of Two Strains of Nebraska Rainbow Trout By J. Seeb and L. Wishard

The self-sustaining rainbow trout population living in Lake Mcconaughy and the North Platte River tributaries is unique to the Great Plains region. The population spends most of its adult life in the …

A Process For The Production Of 2-Alkyl Or 2-Cycloalkyl-4-Methyl-6-Hydroxypyrimidines, Joseph T. Blackwell Iii, John T. Gupton, Teruko U. Miyazaki, James B. Nabors, Joseph R. Pociask

Chemistry Faculty Publications

Production of 2-alkyl- or cycloalkyl-4-methyl-6- hydroxypyrimidines by first neutralizing an alkyl imidate ester hydrochloride with a base in the presence of a water-immiscible solvent for the alkyl imidate ester to be freed thereby; condensing the alkyl imidate ester with diketene to form an oxazinone intermediate, which is then reacted in organic solution with gaseous ammonia and recovering the desired substituted 6-hydroxypyrimidine.

An Analysis Of The U.S.-Canadian East Coast Fisheries Resource Agreement, Michael V. Guimond

Marine Affairs Theses and Major Papers

This analysis of the U.S.-Canadian East Coast Fisheries Resource Agreement was initiated at the request of a group of fishing industry representatives concerned about some of the terms enumerated in this document. The purpose behind this research project was threefold. First, to determine if this Agreement was consistent with the intent of the FCMA. Second, to determine the economic impact of this Treaty upon the New England fishing industry. The third purpose, which is not in the scope of this paper, was to aid in determining what the response of the user groups should be.

Impact Of The Ussr's 200 Mile Fishery Zone On The Japanese-Soviet Fishery Negotiations, Hiroshi Hara

Marine Affairs Theses and Major Papers

The current negotiations between Japan and the Soviet Union on the amount of catch by Japanese within the Soviet Union's 200-mile zone and by the Soviet Union within the Japanese 200-mile zone are very complex. When the Soviets declared their 200-mile zone, Japan did not agree to Soviet fishing jurisdiction over the 200-mile zone surrounding these islands. In order to secure its traditional interests in fishing within the extensive 200-mile lines, including the disputed islands, Japan had to agree to the Soviet lines with a proviso that territorial questions would be separated from fishing rights. This thesis examines the recent …

Maritime Unions & U.S. Shipping Policy, Jon Lucas

Marine Affairs Theses and Major Papers

This paper explores the role played by the U.S. maritime unions in influencing the formation of American shipping policy. The thesis of the paper is that maritime unions have exerted great influence on legislators, through lobbying efforts to foster special-interest legislation which benefits union members at the expense of the taxpayer. The research is based on standard works on shipping and maritime labor relations, Hearings of the House and Senate Merchant Marine committees, and newspaper and magazine articles which trace the progress of various pieces of maritime legislation. Only the activities of the seagoing unions are discussed, and the paper …

A Proposal For The Establishment Of A Monthly Latin American Fisheries Newspaper, Kenneth Proudfoot

Marine Affairs Theses and Major Papers

At the present time there does not exist any publication or other communication medium, directed specifically to a Latin American readership, that reports thoroughly and accurately on the fisheries and other marine-related developments in Latin America. Problems of language, physical size of the area, financing, personnel, bureaucracy and politics, among others, have always proved to be overwhelming. This study describes the informational needs of the people and organizations concerned with Latin America's fisheries sector, and review current fisheries and marine-related publications in this region. a preliminary economic feasibility analysis for the creation and publication of a new monthly Latin American …

Management Of Antarctic Krill, Paul Setliff

Marine Affairs Theses and Major Papers

This study pertains to the problem of international activity in an area of political and ecological sensitivity, the Southern Ocean. Of specific concern is the question of which group of states should have a voice in management of Antarctic krill. The niche filled by krill within the ecosystem and its potential as a fishery is discussed. Past international practice has been affected for the most part by the Antarctic Treaty of 1959 which has maintained a somewhat exclusive "club" of nations as the overseers of Antarctic activity. However, states not party to the 1959 Treaty are becoming interested in the …

State Government And Ocs Policy: An Analysis Of The Outer Continental Shelf Lands Act And The Amendments Of 1978, Bruce Vild

Marine Affairs Theses and Major Papers

An Energy Research and Development Administration report indicates that the United States is increasing its dependence on oil from the countries that participated in the 1973 oil embargo. Given the volatile situation in the Middle East at this writing, the Carter Administration's peace initiatives notwithstanding, this seems an imprudent policy. And, at a time when "Project Independence" is a recent memory, there is a great deal of irony in increased importation. It seems in the Nation's best interest to reverse that trend. Natural gas is also in demand, of course, especially in the Northeast during the winter. The best solution …

A Preliminary Cost-Benefit Analysis Of The Proposed St. Thomas-St. John Sand Mining Project, Random Dubois

Marine Affairs Theses and Major Papers

A territorial ban on beach and sand removal in the U. S. Virgin Islands has resulted in a search for alternative sources. Insecure extra-territorial reserves and high shipping costs have made sand importation prohibitive. Recent surveys conducted in 1977 by the U. S. Geological Survey identified several nearshore sources of aggregate adjacent to the island of St. Thomas. In a 1978 workshop jointly conducted by the Government of the Virgin Islands and the National Oceanic and Atmospheric Administration various alternatives were presented for sand extraction. Two alternatives are examined using a cost benefit approach.