Digital Commons Network^™

Dielectric Plug-Loaded Two-Port Transmission Line Measurement Technique For Dielectric Property Characterization Of Granular And Liquid Materials, K. Mubarak, R. Zoughi, Aaron D. Benally, Karl Joseph Bois, Larry F. Handjojo

Electrical and Computer Engineering Faculty Research & Creative Works

There are numerous dielectric property characterization techniques available in the microwave regime each with its own uniqueness, advantages and disadvantages. The two-port completely-filled waveguide (transmission line) technique is a robust measurement approach which is well suited for solid dielectric materials. In this case, the dielectric material can be relatively easily machined to fit inside the waveguide and the subsequent measurement of the scattering parameters of this two-port device renders the dielectric properties of the material filling the waveguide. However, this technique is not well suited for measuring the dielectric properties of granular and liquid materials. These materials are used in …

Extension's Portfolio For The 21st Century: A Place For One-On-One Consultations, Peggy Petrzelka, Steve Padgitt, Wendy Wintersteen

Journal of Extension

Revisits the individual consultations that provided the base from which the Cooperative Extension Service grew. Using data gathered from clients' and Extension staff evaluations of one-on-one activities, our findings show these consultations have an economic and educational value for clients. The consultations benefit field specialists as well, augmenting their need assessments by providing information from in the field, providing opportunities for on-going research, and building credibility. It is maintained that continuing (or re-implementing) these consultations as part of Extension's portfolio for the 21st Century has mutual benefit, both to the client and to Extension.

The Relationship Between Secondary Teachers' Perceptions Of Empowerment And A Principal's Leadership Style, George W. Walker

Electronic Theses and Dissertations

This study was designed to investigate the relationship between teachers' perceptions of empowerment and their impressions of their principal's leadership style within Bolman and Deal's four organizational frames, selected teacher demographics, and school size. The study used the survey method of data collection. Completed School Participant Empowerment Scales, Leadership Orientations Other Scales, and demographics forms were received from 315 (90%) of the teachers surveyed. The criterion variable, or dependent variable, was the teachers' scores on the School Participant Empowerment Scale. Teachers' scores on the Leadership Orientations Other Scale, teacher demographics (age, educational level, and teaching experience), and school size were …

Statistical Controller Design For The Linear Benchmark Problem, Chaouki T. Abdallah, V. Koltchinskii, M. Ariola, Peter Dorato

Electrical & Computer Engineering Faculty Publications

In this paper some fixed-order controllers are designed via statistical methods for the benchmark problem originally presented at the 1990 American Control Conference. Based on some recent results by the authors, it is shown that the statistical approach is a valid method to design robust controllers. Two different controllers are proposed and their performance are compared with controllers with the same structure, designed using different techniques.

Development Of A Construction Safety Program, Christopher Haux

Theses and Dissertations

In the mid to late 1990's the United States has been experiencing a thriving economy which has spurred increased amounts of construction. During this time of prosperity, the quality of work and the safety of workers can often be forgotten. Each of these areas becomes important to those involved, and to the ability to continue a strong and prosperous economy. Safety to those who produce and those who buy is a sign of a strong economy and a strong community; because construction of communities is what we are really doing.

An Environmental History Of The 19th Century Marquette Iron Range, Doug Ottke

Theses and Dissertations

The history of the Marquette Iron Range in the upper peninsula of Michigan is integrally linked to the environment. The natural features of the Marquette Range defined the mode of production on the Range, and conversely, as human systems became more adept in these modes of production they became the most important modifiers of the natural systems.

Settlement on the Marquette Iron Range was closely related to two factors of natural environment: the iron ore formations and the hardwood forest. The distribution of three iron ore formations—principally the Negaunee, but also the Bijiki and other Iron- formations within the Michigamme …

Mustang Daily, November 30, 1999

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

The Daily Egyptian, November 30, 1999, Daily Egyptian Staff

November 1999

No abstract provided.

The Murray Ledger And Times, November 30, 1999, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

Daily Eastern News: November 30, 1999, Eastern Illinois University

November

No abstract provided.

Full Length Transcript Promotor From Figwort Mosaic Caulimovirus (Fmv) And Use To Express Chimeric Genes In Plant Cells, Indu B. Maiti, Robert J. Shepherd

Kentucky Tobacco Research and Development Center Faculty Patents

Use of wild type and modified viral FLt promoters of FMV in the expression of chimeric genes in plant cells. The FLt promoter from FMV is modified with duplicated enhancer domains. The FLt promoter with its single or double enhancer domains is linked to heterologous coding sequences to form chimeric gene constructs. These genes have been shown to be expressed well in plant cells.

The Pan American (1999-11-30), Joe Leal

UTPA Archives - The Pan American Newspaper

48th Year, No. 21

The Parthenon, November 30, 1999, Marshall University

The Parthenon

No abstract provided.

Current Design - Structure And Layout, Robert J. Twiggs

Robert "Bob" Twiggs STEM Education Collection

A PowerPoint Presentation created by Professor Bob Twiggs titled "Current Design - Structure and Layout" from November 30, 1999.

Independent- Nov. 30, 1999, Laura R. Hadley

The Independent (1988-present)

No abstract provided.

The Bg News November 30, 1999, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. November 30, 1999. Volume 84-Issue 65.

November 30, 1999, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Interior-Point Methods And Modern Optimization Codes, Goran Lesaja

Mathematical Sciences: Faculty Publications

During the last fifteen years we have witnessed an explosive development in the area of optimization theory due to the introduction and development of interior-point methods. This development has quickly led to the development of new and more efficient optimization codes. In this paper, the basic elements of interior-point methods for linear programming will be discussed as well as extensions to convex programming, complementary problems, and semidefinite programming. Interior-point methods are polynomial and effective algorithms based on Newton 's method. Since they have been introduced, the classical distinction between linear programming methods, based on the simplex algorithm, and those methods …

Grand Valley Forum, Volume 024, Number 18, November 29, 1999, Grand Valley State University

1999-2000, Volume 24

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

Mustang Daily, November 29, 1999

Cal Poly Student Newspaper

Student newspaper of California Polytechnic State University, San Luis Obispo, CA.

Double Twist In Helical Polymer "Soft" Crystals, Christopher Y. Li, Stephen Z. D. Cheng, Jason J. Ge, Feng Bai, John Z. Zhang, Ian K. Mann, Frank W. Harris, Lang-Chy Chien, Donghang Yan, Tianbai He, Bernard Lotz

College of Polymer Science and Polymer Engineering

In natural and synthetic materials having non-racemic chiral centers, chirality and structural ordering each play a distinct role in the formation of ordered states. Configurational chirality can be extended to morphological chirality when the phase, structures possess low liquid crystalline order. In the crystalline states the crystallization process suppresses the chiral helical morphology due to strong ordering interactions, In this Letter, we report the first observation of helical single lamellar crystals of synthetic non-racemic chiral polymers. Experimental evidence shows that the molecular chains twist along both the long and short axes of the helical lamellar crystals, which is the first …

Energy Efficient Industrialized Housing Research Summary Of Fy1998 Activities (July 1998 - August 1999), Florida Solar Energy Center, Janet Mcilvaine

FSEC Energy Research Center®

The objectives of this work are to increase the market share of energy-efficient housing by conducting field testing and monitoring, research, development, design assistance, and training activities in partnership with housing manufacturers, production builders, non-profits and related members of the housing industry.

November 29, 1999, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

The Murray Ledger And Times, November 29, 1999, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

Deafdigest Gold: Vol. 4, No. 17 November 28, 1999, Barry Strassler

DeafDigest Gold 1999

No abstract provided.

Surface Enhanced Raman Spectroscopic Study Of Scn- Adsorbed At The Copper And Gold Nanowire Arrays, Jian-Lin Yao, Guo-Ping Pan, Kuan-Hong Xue, Yong Xie, Jing Tang, Bin Ren, Dong-Mei Sun, Bing-Wei Mao, Zhong-Qun Tian

Journal of Electrochemistry

Two-dimensional arrays of Cu and Au nanowires have been fabricated by template synthesis method, using the anodic aluminum oxidation films as the template. The morphology of the nanowire array was monitored by atomic force microscope (AFM) in the dissolution processes of the alumina film. Based on the probe molecule strategy, the spectral feature of SCN^- adsorbed at the Cu and Au nanowires with different diameters has been investigated by surface enhanced Raman spectroscopy (SERS). The results reveal that the intensity of the SERS bands depends on the length of the exposed nanowires. The C≡N stretching vibration frequency (ν_{CN …}

The Electrochemical Behaviors Of Superoxide Dismutase At Promoter Modified Gold Electrode, Xia-Qin Wu, Xiao-Yun Meng, Zhe-Su Wang, Zong-Rang Zhang

Journal of Electrochemistry

The electron-transfer process of superoxide dismutase was investigated by cyclic voltammetry at the 4,4'-dithiodipyridine, L-cysteine, histidine and arginine modified gold wire electrodes repectively. The quasi-reversible behavior was observed at L-cysteine modified gold electrode. An irreversible electrochemical behavior has been observed at hisdinine modified gold wire electrode.

Study On Electrochemical Reduction Properties Of Nitrobenzene, Chu-Na Ma, Wen-Kui Zhang, Hui Huang, Yong-Ping Gan

Journal of Electrochemistry

The electrochemical reduction characteristics of nitrobenzene was extensively investigated by using the techniques such as quasi-steady-state polarization, cyclic voltammetry, fast linear potential sweep method and chronoamperometry in this paper. The electroanalytic properties of Cu, Cu-Hg and Cu-Ni electrodes were evaluated. Based on the study of the transient steping behaviour of nitrobenzene to PAP, the reduction mechanism was discussed. The results showed that the transition steps existed on the electrochemical reduction of nitrobenzene in acidic solution, the reactant is also absorbed on electrodes surface. The control step in the reduction of nitrobenzene was ascribed to the diffusion of nitrobenzene and its …

High Performance Proton Exchange Membrane Fuel Cells, Jing-Rong Yu, Bao-Lian Yi, Ming Han, Xiao-Liang Cheng, Zhi-Gang Shao, Jing-Xin Zhang

Journal of Electrochemistry

Proton-exchange membrane fuel cells(PEMFC) using a perfluorosulfonic acid proton exchange membrane as an electrolyte can simplify water and electrolyte management. In this paper, the effects of thickness of PEM on the performance of PEMFC were studied. The Nafion-112 PEM and low platinum loading E-TEK electrode yielded very high power density, of the order of 0.95 W/cm². The energy-conversion efficiency, the degree of platinum utilization and stability for PEMFC using Nafion 112 and E-TEK electrode were also investigated.

Electrochemical Studies Of Metal Complexes In Solution, Ye-Xiang Tong, Bei-Sheng Kang, Qi-Qin Yang

Journal of Electrochemistry

The prospectus of electrochemical studies of metal complexes in solution have been introduced as a background of our research work. The electrochemical behaviors of the metal complexes and clusters have been investigated by many kinds of electrochemical methods. The content includes the standard electrode potential and the related equilibrium constant, electrochemical kinetics and the related behavior of structure, electrocatalysis and electrosynthesis of metal complexes. The electrode reaction mechanisms of the complexes have been approached. The methods for measuring some thermodynamic and kinetic parameters of the complexes are also given. Electrochemical studies would provid many kinds of important information for studying …