Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

1999

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 9241 - 9270 of 9458

Full-Text Articles in Entire DC Network

Ds Cdma Scheme For Watm With Errors And Erasures Decoding, Beata J. Wysocki, Hans-Jürgen Zepernick, Tadeusz Wysocki Jan 1999

Ds Cdma Scheme For Watm With Errors And Erasures Decoding, Beata J. Wysocki, Hans-Jürgen Zepernick, Tadeusz Wysocki

Department of Electrical and Computer Engineering: Faculty Publications (to 2015)

In the paper, we present simulation results for the 13 channel DS CDMA WATM LAN utilising optimized complex spreading signatures based on Walsh functions. The method to obtain those optimized spreading signatures, as well as the full set of the coefficients giving the minimum level of cross-correlation between any pair of the channels is shown. The resultant system BER as well as the distribution of errors within WATM cells is given. The obtained results indicate that with the application of a hybrid ARQ scheme with errors and erasures decoding, the number of WATM cells which would require retransmission is in …

Go to article

A Dual Encryption Protocol For Scalable Secure Multicasting, Lakshminath R. Dondeti, Sarit Mukherjee, Ashok K. Samal Jan 1999

A Dual Encryption Protocol For Scalable Secure Multicasting, Lakshminath R. Dondeti, Sarit Mukherjee, Ashok K. Samal

School of Computing: Conference and Workshop Papers

In this paper we propose a dual encryption protocol for scalable secure multicasting. Multicasting is a scalable solution for group communication. It howevel; poses several unique security problems. We use hierarchical subgrouping to achieve scalability. Third party hosts or members of the multicast group are designated as subgroup managers. They are responsible for secret key distribution and group membership management at the subgroup level. Unlike existing secure multicast protocols, our protocol need not trust the subgroup managers with the distribution of data encryption keys. The dual encryption protocol proposed in this paper distributes encrypted data encryption keys via subgroup managers. …

Go to article

2018 Nebraska Water Leaders Academy - Final Report, Mark E. Burbach Jan 1999

2018 Nebraska Water Leaders Academy - Final Report, Mark E. Burbach

Conservation and Survey Division: Faculty and Staff Publications

Nineteen participants completed the 2018 Water Leaders Academy bringing the total number of graduates to 120 since the inception of the program in 2011. Assessment of participants’ transformational leadership skills, champion of innovation skills, water knowledge and engagement, civic capacity, and entrepreneurial leadership behaviors showed a significant increase over the course of the year, from both participants’ and their raters’ perspectives. Feedback from participants was highly positive and constructive. Participant concerns were addressed, and only minor changes are planned for the 2019 Academy curriculum. Results of the program assessment indicate that the curriculum is meeting Academy objectives. Most importantly, Alumni …

Go to article

Railing Systems For Use On Timber Deck Bridges, Ronald K. Faller, Michael A. Ritter, Barry Thomas Rosson, Sheila R. Duwadi Jan 1999

Railing Systems For Use On Timber Deck Bridges, Ronald K. Faller, Michael A. Ritter, Barry Thomas Rosson, Sheila R. Duwadi

Department of Civil and Environmental Engineering: Faculty Publications

Bridge railing systems in the United States have historically been designed based on static load criteria given in the AASHTO Standard Specifications for Highway Bridges. In the past decade, full-scale vehicle crash testing has been recognized as a more appropriate and reliable method of evaluating bridge railing acceptability. In 1989, AASHTO published the Guide Specifications for Bridge Railings, which gave the recommendations and procedures to evaluate bridge rails by full-scale vehicle crash testing. In 1993, the National Cooperative Highway Research Program (NCHRP) published Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features, which provided …

Go to article

Models In Manual Materials Handling, M. M. Ayoub, Jeffrey C. Woldstad Jan 1999

Models In Manual Materials Handling, M. M. Ayoub, Jeffrey C. Woldstad

Department of Industrial and Management Systems Engineering: Faculty Publications

The ergonomics approach to manual materials handling (MMH) tasks defines a Man-Task-Environment System. A generally accepted means of minimizing MMH related injuries is to design MMH tasks so that the demands of the tasks are less than the capacities of the individuals performing these tasks. Task design is dependent, in part, on the availability of comparable data for task demands and worker capacities. The generation of the appropriate data is dependent, in part, on being able to identify the pertinent capacity parameters of manual materials handling activities.

In the past, a substantial effort has been directed at determining ‘safe’ lifting …

Go to article

Road Rescue Implements A Continuous Process Improvement Framework, John Olson, Paul Savory Jan 1999

Road Rescue Implements A Continuous Process Improvement Framework, John Olson, Paul Savory

Department of Industrial and Management Systems Engineering: Faculty Publications

Continuous improvement programs traditionally focus on making small incremental improvements to a system. Unfortunately, their success can be limited due to the rapid changing environment within which most small companies operate. Improvement efforts should be flexible enough to capitalize on incremental and radical changes to a system. This paper presents a case analysis of how Road Rescue, an ambulance manufacturer, uses a continuous improvement framework to capitalize on both radical and incremental improvement opportunities. Results include a 10% increase in throughput, reduced cycle time of 44%, increased customer satisfaction, and higher quality.

Go to article

Transgenic Mammals Expressing Human Coagulation Factor Viii, Henryk Lubon, William N. Drohan, William H. Velander Jan 1999

Transgenic Mammals Expressing Human Coagulation Factor Viii, Henryk Lubon, William N. Drohan, William H. Velander

Department of Chemical and Biomolecular Engineering: Faculty Publications

A non-human transgenic mammalian animal, as described above, contains an exogenous double Stranded DNA Sequence Stably integrated into the genome of the animal, which comprises cis-acting regulatory units operably linked to a DNA sequence encoding human Factor VIII protein and a signal peptide, where the cis-acting regulatory units are active in mammary gland cells and the Signal peptide is active in directing newly expressed Factor VIII into the milk of the animal. The promoter may be a milk protein promoter Such as for whey acidic protein, casein, lactalbumin, or beta-lactoglobulin promoter. The transgenic mammals are preferably farm animals, for example, …

Go to article

Ndsu Greenhouse Studies Yield More Tips For Improved Fungicide Spraying For Wheat/Barley Head Scab Control, Marcia Mcmullen, Scott Halley, Jeremy Pederson Jan 1999

Ndsu Greenhouse Studies Yield More Tips For Improved Fungicide Spraying For Wheat/Barley Head Scab Control, Marcia Mcmullen, Scott Halley, Jeremy Pederson

ER Series – Extension Reports

No abstract provided.

Go to article

Improved Fungicide Spraying For Wheat/Barley Head Scab Control, Marcia Mcmullen, Jim Moos Jan 1999

Improved Fungicide Spraying For Wheat/Barley Head Scab Control, Marcia Mcmullen, Jim Moos

ER Series – Extension Reports

No abstract provided.

Go to article

Introduction: The Dimensions Of Technological Change, Henry T. King Jr. Jan 1999

Introduction: The Dimensions Of Technological Change, Henry T. King Jr.

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

People Aspects Of Technological Change: Immigration Issues, Labor Mobility, The Brain Drain, And R&D--A U.S. Perspective, James D. Van Erden Jan 1999

People Aspects Of Technological Change: Immigration Issues, Labor Mobility, The Brain Drain, And R&D--A U.S. Perspective, James D. Van Erden

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Introduction: Raising Venture Capital Aspects Of Technological Change, James Mcilroy Jan 1999

Introduction: Raising Venture Capital Aspects Of Technological Change, James Mcilroy

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Discussion Following The Remarks Of Mr. Wainwright, Discussion Jan 1999

Discussion Following The Remarks Of Mr. Wainwright, Discussion

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Protecting And Exploiting U.S. And Canadian Intellectual Property Abroad On A Global Basis In A Technologically Changing World--A Canadian Perspective, T. Gary O'Neill Jan 1999

Protecting And Exploiting U.S. And Canadian Intellectual Property Abroad On A Global Basis In A Technologically Changing World--A Canadian Perspective, T. Gary O'Neill

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Public Dimension Of Technological Change: Impact On The Media, The Citizenry, And Governments--A U.S. Perspective, The, Christopher T. Hill Jan 1999

Public Dimension Of Technological Change: Impact On The Media, The Citizenry, And Governments--A U.S. Perspective, The, Christopher T. Hill

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Raising Venture Capital Aspects Of Technological Change--A Canadian Perspective, Denzil Doyle Jan 1999

Raising Venture Capital Aspects Of Technological Change--A Canadian Perspective, Denzil Doyle

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Calibrating The Electronic Scales: Tipping The Balance In Favour Of A Vigorous And Competitive Electronic Market For Consumers, Nicole Ladouceur Jan 1999

Calibrating The Electronic Scales: Tipping The Balance In Favour Of A Vigorous And Competitive Electronic Market For Consumers, Nicole Ladouceur

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Technological Change And Canada/U.S. Regulatory Models For Information, Communications, And Entertainment, Ronald G. Atkey Jan 1999

Technological Change And Canada/U.S. Regulatory Models For Information, Communications, And Entertainment, Ronald G. Atkey

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

Discussion Following The Remarks Of Mr. Allen, Discussion Jan 1999

Discussion Following The Remarks Of Mr. Allen, Discussion

Canada-United States Law Journal

The Impact of Technological Change in the Canada/U.S. Context

Go to article

2001: A Global Odyssey Prompted By The Merritt-Cihon Upper Level Curriculum Report Of The Aals, Kenneth M. Casebeer Jan 1999

2001: A Global Odyssey Prompted By The Merritt-Cihon Upper Level Curriculum Report Of The Aals, Kenneth M. Casebeer

University of Miami Inter-American Law Review

No abstract provided.

Go to article

Statistical Physics, Neural Networks, Brain Studies, Gerard Toulouse Jan 1999

Statistical Physics, Neural Networks, Brain Studies, Gerard Toulouse

Turkish Journal of Physics

An overview of some aspects of a vast domain, located at the crossroads of physics, biology and computer science is presented: 1) During the last fifteen years, physicists advancing along various pathways have come into contact with biology (computational neurosciences) and engineering (formal neural nets). 2) This move may actually be viewed as one component in a larger picture. A prominent trend of recent years, observable over many countries, has been the establishment of interdisciplinary centers devoted to the study of: cognitive sciences; natural and artificial intelligence; brain, mind and behaviour; perception and action; learning and memory; robotics; man-machine communication, …

Go to article

The Renormalization-Group Microscope: The Local Statistical Mechanics Of Heterogeneous Systems, Dicle Yeşi̇lleten, A. Nihat Berker Jan 1999

The Renormalization-Group Microscope: The Local Statistical Mechanics Of Heterogeneous Systems, Dicle Yeşi̇lleten, A. Nihat Berker

Turkish Journal of Physics

Renormalization-group theory is developed to yield all local microscopic thermodynamic densities in heterogeneous systems. Local energy densities and local magnetizations are thus obtained for random-bond systems, random-field systems, and spin-glasses, in two and three dimensions. Different order-disorder mechanisms in these diverse systems, such as chaotic ordering and domain-wall melting, become quantitatively evident.

Go to article

Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Physics

No abstract provided.

Go to article

Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Physics

No abstract provided.

Go to article

Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Physics

No abstract provided.

Go to article

Fundamental Research And Device Technology, B. K. Ridley Jan 1999

Fundamental Research And Device Technology, B. K. Ridley

Turkish Journal of Physics

Highlights of the interaction between fundamental research and semiconductor device technology are summarized.

Go to article

Electron Transport In Gaas Quantum Wells: Effect Of Interface Roughness Scatterin, Rita Gupta Jan 1999

Electron Transport In Gaas Quantum Wells: Effect Of Interface Roughness Scatterin, Rita Gupta

Turkish Journal of Physics

The importance of interface roughness (IFR) scattering of electrons and LO-phonons for electron transport in semiconductor quantum wells is discussed. Modulation doping of quantum wells minimizes the effect of impurity scattering on the low-field electron mobility so that IFR scattering of electrons in the well becomes the major limiting factor. A model calculation of IFR scattering of electrons in quantum wells is presented and it is shown that (both)\Lambda and \Delta, the parameters defining IFR, can be estimated by comparing the theoretical and experimental electron mobilities. The application of high electric field leads to a distribution of hot electrons which …

Go to article

Feasibility Of The Gainp/Ingaas/Gaas System For Modulation Doped Field-Effect Transistors, C. Besi̇kci̇, Y. Ci̇van Jan 1999

Feasibility Of The Gainp/Ingaas/Gaas System For Modulation Doped Field-Effect Transistors, C. Besi̇kci̇, Y. Ci̇van

Turkish Journal of Physics

Si-doped single Ga_{0.51}In_{0.49}P layers and GaInP/InGaAs/GaAs modulation doped field-effect transistor structures grown by gas source molecular beam epitaxy were characterized in detail through Hall-Effect and Deep Level Transient Spectroscopy techniques. Electrical characterization of the undoped and moderately Si-doped (N_D = 3 x 10^{17} cm^{-3}) GaInP layers yielded an electron trap with an activation energy of 0.75 eV and a temperature dependent capture cross section with a capture barrier of 0.593 eV showing DX center properties. The trap was not detected in highly Si doped (N_D = 4 x 10^{18} cm^{-3}) as grown layers suggesting that it is a defect complex …

Go to article

Silicon-Based Optoelectronics: Progress And Challenges, Tamim P. Sidiki, Clivia M. Sotomayor Torres Jan 1999

Silicon-Based Optoelectronics: Progress And Challenges, Tamim P. Sidiki, Clivia M. Sotomayor Torres

Turkish Journal of Physics

We review the status of silicon-based optoelectronics with emphasis on light emitting diodes. Erbium-doped Si, por-Si and silicon-based superlattices and nanostructures are discussed. The origin behind light emission in silicon with feature sizes below about 60 nm still remains poorly understood.

Go to article

3 \Mu M Intersubband Quantum Well Photodetector (Qwip), Rita Gupta, A. L. Y. Wong, S. K. Haywood Jan 1999

3 \Mu M Intersubband Quantum Well Photodetector (Qwip), Rita Gupta, A. L. Y. Wong, S. K. Haywood

Turkish Journal of Physics

In recent years photodetectors operating in the mid- to far infrared region of 3-15 \mu m have been designed based on electron and hole intersubband transitions in multiple quantum wells and superlattices. In general, QWIPs based on electron transitions show greater detectivity compared to the hole-based photodetectors. However, selection rules for electron intersubband transitions usually forbid the TE mode operation, associated with normal light incidence; Therefore, special coupling structures/geometries have been employed to couple light into the device. The spectral region 3-5 \mu m is of interest for a variety of applications such as environmental gas sensing, thermal imaging etc. …

Go to article

First Prev Next Last