Digital Commons Network^™

Scintillation Model For A Satellite Communication Link At Large Zenith Angles, Larry C. Andrews, Ronald L. Phillips, Cynthia Young Hopen

Faculty Bibliography 2000s

A scintillation model is developed for uplink-downlink optical communication channels applicable in moderate to strong fluctuation conditions that may arise under large zenith angles between transmitter and receiver. The model developed here is an extension of a recently published theory that treats irradiance fluctuations along a horizontal path as a modulation of small-scale scintillation by large-scale scintillation. For a downlink path the scintillation index is modeled like that of an infinite plane wave, and for an uplink path we consider a spherical wave model. In both cases the scintillation index agrees with conventional weak-fluctuation-theory results out to zenith angles of …

Central Washington University Football Key Player Profiles, Central Washington University Athletics

Football

No abstract provided.

Functional Skill Requirements Of Manufacturing Employment In The Rural South, Timothy R. Wojan

Journal of Rural Social Sciences

This analysis compares the functional skill requirements of manufacturing employment in rural and urban areas of six Southern states. The General Educational Development-Reasoning Scale provides information on the cognitive requirements of various work tasks while Specific Vocational Preparation provides information on the time of training needed for average performance in a job. The analysis identifies three distinct patterns of comparative skill requirements. Traditional Rural Production is characterized by substantial low-skill employment in both rural and urban areas-the modest number of high-skilled workers are found predominantly in urban areas. Spatial Division of Labor Production is characterized by a large share of …

Public Education And Greenwood County: A Benchmarking Tool, 1999 December 31, Louis R. Lanier, Ellen Weeks Saltzman

Publications

No abstract provided.

Central Washington University Football Player Profiles, 1999, Central Washington University Athletics

Football

No abstract provided.

Application Of Vibrational Techniques In Determination Of Dynamic Properties Of Agricultural Products-State Of The Arton Of Vibrational Techniques In Determination Of Dynamic Properties Of Agricultural Products-State Of The Art, Silas Kajuna

Tanzania Journal of Engineering and Technology (TJET)

Vibration is one of the techniques employed in the determination of dynamic properties of fruits and vegetables. It entails generation of a mechanical or acoustic vibrational signal which is propagated through the flesh of the agricultural material. A transducer is either attached or held close to the specimen to monitor the propagation of the signal through the specimen. The manner in which the signal is transmitted through the material is analyzed, and the dynamic properties of the specimen which relate to its firmness or its internal being are derived. The technique has been around for the past 30 years or …

Mathematical Modelling Of Road Bumps, E. S. Massawe

Tanzania Journal of Engineering and Technology (TJET)

In this paper, a general mathematical model that may be used for construction of a road bump on an inclined road is developed. It is shown that if the parameters for the inclination are set to zero, the resulting model reflects the special case of a flat road. Existing experiences are briefly highlighted and a case study was done on different locations along the University Road to demonstrate the developed model.

Modeling And Simulation Of The Dynamic Behavior Of Monoliths: Effects Of Pore Structure From Pore Network Model Analysis And Comparison With Columns Packed With Porous Spherical Particles, Athanasios I. Liapis, J. J. Meyers, Orrin K. Crosser

Chemical and Biochemical Engineering Faculty Research & Creative Works

A mathematical model is presented that could be used to describe the dynamic behavior, scale-up, and design of monoliths involving the adsorption of a solute of interest. The value of the pore diffusivity of the solute in the pores of the skeletons of the monolith is determined in an a priori manner by employing the pore network modeling theory of Meyers and Liapis [J. Chromatogr. A, 827 (1998) 197 and 852 (1999) 3]. The results clearly show that the pore diffusion coefficient, D(mp), of the solute depends on both the pore size distribution and the pore connectivity, n(T), of the …

The Human Relationships And Safe And Efficient Ship Operation, Praveen Kumar

World Maritime University Dissertations

No abstract provided.

Optimum Container Handling Equipment Plan In Jakarta International Container Terminal (Jict) : A Quantitative Model Using Interger Linear Programming, Andi Isnovandiono

World Maritime University Dissertations

No abstract provided.

An Investigation Into The Feasibility Of Introducing A Marine Engine Simulator Into The Algerian Met Maritime Education And Training System, Djelloul Bouras

World Maritime University Dissertations

No abstract provided.

An Investigation Into The Current State Of Chinese Higher Met Maritime Education And Training In The Light Of New International Legislation And With Particular Reference To Stcw'95, Biwu Chen

World Maritime University Dissertations

No abstract provided.

Maritime Education And Training In Chile : An Analysis Of The Current Management System And Proposal For Its Restructure, Luis Felipe Gracia Tapia

World Maritime University Dissertations

No abstract provided.

The Problem Of Recruitment And Retention Of Qualified Maritime Educators In Maritime Academies In The Developing Countries : The Case Of Philippine Merchant Marine Academy, Joel Yoto Abutal

World Maritime University Dissertations

No abstract provided.

Cost Benefit Analysis Regarding The Clearing And Forwarding Business In Ceylon Shipping Corporation Ltd., N. P. Kalpage

World Maritime University Dissertations

No abstract provided.

Women In The Maritime Industry : A Review Of Female Participation And Their Role In Maritime Education And Training In The 21st Century, Hannah Aba Aggrey

World Maritime University Dissertations

No abstract provided.

Uruguay Naval Academy : An Investigation Into An Expanded Education Role To Satisfy The Future Demands Of The Maritime Industry, Carlos Eduardo Abilliera Aris

World Maritime University Dissertations

No abstract provided.

Probing The Mechanisms Of Enantioselective Hydrogenation Of Simple Olefins With Chiral Rhodium Catalysts In The Presence Of Anions, Jillian M. Buriak, Jason C. Klein, Deborah Herrington, John A. Osborn

Peer Reviewed Articles

The strong influence of various anions upon the hydrogenation of 2-phenyl-1-butene, catalyzed by chiral rhodium catalysts was investigated. Both sulfonates and halides exert large increases in the enantioselectivity when [Rh{(−)-bdpp}(NBD)]ClO4 (bdpp=2,4-bis(diphenylphosphino)pentane, NBD=2,5-norbornadiene) is used as the catalyst precursor at high pressures (70 atm) of dihydrogen in nonpolar solvents. A dihydride mechanism similar to that for Wilkinson's catalyst [RhCl(PPh3)3] was shown to be operating at both high- and low-pressure conditions through a combination of catalytic studies, 31P, 1H and parahydrogen-induced polarization (PHIP) NMR experiments. With sulfonate and in neat methanol, however, a mechanistic switch takes place from a dihydride route (dihydrogen …

The Socratic Fallacy In The Early Dialogues, Priscilla Sakezles

The Society for Ancient Greek Philosophy Newsletter

In ‘Plato’s Euthyphro: An Analysis and Commentary’ (33), Peter Geach attributes two assumptions to Socrates which he calls the ‘Socratic Fallacy’ since its locus classicus is the early Socratic dialogues:

(A) if you know you are correctly predicating a given term ‘T,’ you must ‘know what it is to be T’ in the sense of being able to give a general criterion for a thing’s being T;

(B) it is no use to try and arrive at the meaning of‘T’ by giving examples of things that are T.

Geach claims that (B) follows from (A) because assuming (A) is true, …

Cu(Ii) Potentiation Of Alzheimer A Neurotoxicity, Xudong Huang, Math P. Cuajungco, Craig S. Atwood, Mariana A. Hartshorn, Joel D. A. Tyndall, Graeme R. Hanson, Karen C. Stokes, Michael C. Leopold, Et Al.

Chemistry Faculty Publications

Oxidative stress markers as well as high concentrations of copper are found in the vicinity of Aβ amyloid deposits in Alzheimer's disease. The neurotoxicity of Aβ in cell culture has been linked to H2O2generation by an unknown mechanism. We now report that Cu(II) markedly potentiates the neurotoxicity exhibited by Aβ in cell culture. The potentiation of toxicity is greatest for Aβ1–42 > Aβ1–40 ≫ mouse/rat Aβ1–40, corresponding to their relative capacities to reduce Cu(II) to Cu(I), form H2O2 in cell-free assays and to exhibit amyloid pathology. The copper complex of Aβ1–42 has a highly positive formal reduction potential (≈+500–550 mV versus …

12/23/1999 - Eastern Offers Courses In Mattoon.Pdf, University Marketing And Communications

1999

No abstract provided.

Viscoelastic Depinning Of Driven Systems: Mean-Field Plastic Scallops, M. Cristina Marchetti, Alan Middleton, Thomas Prellberg

Physics - All Scholarship

We have investigated the mean field dynamics of an overdamped viscoelastic medium driven through quenched disorder. The model introduced incorporates coexistence of pinned and sliding degrees of freedom and can exhibit continuous elastic depinning or first order hysteretic depinning. Numerical simulations indicate mean field instabilities that correspond to macroscopic stick-slip events and lead to premature switching. The model is relevant for the dynamics of driven vortex arrays in superconductors and other extended disordered systems.

Emissions Of Formaldehyde, Acetic Acid, Methanol, And Other Trace Gases From Biomass Fires In North Carolina Measured By Airborne Fourier Transform Infrared Spectroscopy, Robert J. Yokelson, Jon G. Goode, Darold E. Ward, Ronald A. Susott, Ronald E. Babbitt, D. D. Wade, Issac T. Bertschi, David W. T. Griffith, Wei Min Hao

Chemistry and Biochemistry Faculty Publications

Biomass burning is an important source of many trace gases in the global troposphere. We have constructed an airborne trace gas measurement system consisting of a Fourier transform infrared spectrometer (FTIR) coupled to a “flow-through” multipass cell (AFTIR) and installed it on a U.S. Department of Agriculture Forest Service King Air B-90. The first measurements with the new system were conducted in North Carolina during April 1997 on large, isolated biomass fire plumes. Simultaneous measurements included Global Positioning System (GPS); airborne sonde; particle light scattering, CO, and CO₂; and integrated filter and canister samples. AFTIR spectra acquired within …

Nanocomposite Copt:C Films For Extremely High-Density Recording, M. Yu, Yi Liu, A. Moser, D. Weller, David J. Sellmyer

David Sellmyer Publications

Nanocomposite CoPt:C films were investigated as potential media for extremely high-density recording. An annealing temperature of over 600 °C is necessary to form nanocomposite CoPt:C films consisting of C matrix and fct CoPt nanocrystallites with grain sizes of 8–20 nm and coercivities of 3–12 kOe. Coercivity and grain size increase with increasing annealing temperature and decreasing C concentration and they are insensitive to film thickness. The average activation volumes are about 0.9×10^-18 cm³. The properties of these nanocomposite CoPt:C films can be tailored to satisfy the thermal stability, coercivity, and media noise requirements for extremely high-density recording.

(Teff,Log G,[Fe/H]) Classification Of Low-Resolution Stellar Spectra Using Artificial Neural Networks, Shawn Snider, Yuan Qu, Carlos Allende Prieto, Ted Von Hippel, Timothy C. Beers, Christopher Sneden, David L. Lambert, Silvia Rossi

Publications

New generation large-aperture telescopes, multi-object spectrographs, and large format detectors are making it possible to acquire very large samples of stellar spectra rapidly. In this context, traditional star-by-star spectroscopic analysis are no longer practical. New tools are required that are capable of extracting quickly and with reasonable accuracy important basic stellar parameters coded in the spectra. Recent analyses of Artificial Neural Networks (ANNs) applied to the classification of astronomical spectra have demonstrated the ability of this concept to derive estimates of temperature and luminosity. We have adapted the back-propagation ANN technique developed by von Hippel et al. (1994) to predict …

Commencement Program 1999 December, Gcsu Special Collections

Commencement Programs

No abstract provided.

Ua45/6 Commencement Program, Wku Registrar

WKU Administration Documents

Commencement program listing graduates.

Fall Commencement [Program], December 18, 1999, University Of Northern Iowa

UNI Commencement Programs

The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.

Commencement, Texas A&M University-Commerce

All Commencement Programs

A color program for the Fall 1999 commencement ceremony at Texas A&M University-Commerce. It includes a program of events and a list of graduating students.

150th Commencement, Winter

Commencement Programs

No abstract provided.