Digital Commons Network^™

Two-Variable Scattering Formulas To Describe Some Classes Of Lossles Two-Ports With Mixed, Lumped Elements And Commensurate Stubs, Ahmet Sertbaş

Turkish Journal of Electrical Engineering and Computer Sciences

Using the semi-analytic method based on the construction of two-variable scattering functions, which describe lossless two-ports with two kinds of elements, for some classes of ladder networks formed with lumped elements and commensurate stubs, the explicit descriptive formulas are produced up to six mixed-elements. To exhibit the efficiency of the explicit descriptive equations in the design of the broadband microwave circuits, a single matching design problem (UHF antenna matching) is solved by using the obtained two-variable scattering formulas.

Performance Analysis Of A Fuzzy Logic Based Rotor Resistance Estimator Of An Indirect Vector Controlled Induction Motor Drive, Y. Miloud, Azeddine Draou

Turkish Journal of Electrical Engineering and Computer Sciences

This paper presents a simple method for estimating rotor resistance in an indirect vector-controlled induction motor drive. This is important in vector control, if high-performance torque control is needed. For this purpose, a rotor resistance estimator using fuzzy logic technique is used and analysis, design, and digital simulations are carried out to demonstrate the effectiveness of the proposed estimator.

Cover And Contents

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

A Content-Based Fuzzy Image Database Based On The Fuzzy Artmap Architecture, M. Uysal, Fatoş Tünay Yarman Vural

Turkish Journal of Electrical Engineering and Computer Sciences

A major design issue in content-based image retrieval system is the selection of the feature set. This study attacks the problem of finding a discriminative feature for each class, which is optimal in some sense. Fuzzy ARTMAP architecture is used to find this discriminative feature set. For this purpose, initially, a large variety of features are extracted from the regions of the pre-segmented images. Then, the feature set of each object class is learned using the Fuzzy Art Map Architecture, by identifying the weights of each feature for each object class. In the querying phase, trained set of feature weights …

Color Image Profiling Using Fuzzy Sets, Amine Ait Younes, Isis Truck, Herman Akdag

Turkish Journal of Electrical Engineering and Computer Sciences

In this article, a software for image indexing and retrieval is presented. The classification proposed here is based on the dominant color(s) of the images. The process consists in assigning a colorimetric profile to the image in HLS space (Hue, Lightness, Saturation). First, the definition of hue is done thanks to a fuzzy representation to take into account the non-uniformity of colors distribution. And then, lightness and saturation are represented through linguistic qualifiers also defined in a fuzzy way. Finally, the profile is built through fuzzy functions representing the membership degree of the image to different classes. In order to …

Magnolia News - January 2005, Magnolia Steering Committee

MAGNOLIA News

January 2005 edition of MAGNOLIA News.

Search For LambdaB0-->Ppi And LambdaB0-->PK Decays In P [Overline P] Collisions At Sqrt(S)=1.96 Tev, Darin Acosta, Kenneth A. Bloom, Collider Detector At Fermilab Collaboration

Kenneth Bloom Publications

We report on a search for Λ _b⁰-->pπ^- and Λ _b⁰-->pK^- (and charge conjugate) decays in pp̅ collisions at sqrt(s)=1.96 TeV using 193 pb^-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. Data were collected using a track trigger that has been optimized to select tracks belonging to a secondary vertex that is typical of two-body charmless decays of b-flavored hadrons, including Λ _b⁰ baryons. As no Λ _b⁰ signal was observed, we set the upper limits on the branching fraction …

The Essential Features Of The Personalized System Of Instruction (Psi) Or The Keller Plan, Robert Fuller

Personalized System of Instruction (PSI), or Keller Plan, Materials

While the elements vary somewhat from list to list most authors agree that the five points presented here constitute the essential aspects of PSI. Even wider variation exists among lists of learning principles prepared by various psychologists. While some arbitrariness is inevitable, the principles offered in support of each element of the PSI approach were chosen in an attempt to represent at least a modicum of consensus among psychologists concerning the way humans learn. These principles are offered here primarily as a means of showing how the Keller Plan incorporates some of the basic concepts of learning.

The Communicator, Volume 1, Issue 2, September 2005

The Communicator: News from the Nebraska Cooperative Fish and Wildlife Research Unit

People New Assistant Unit Leader Current Research Landowner Incentives Program (LIP) Amphibians in the Rainwater Basin Resilience in Ecosystems Cross-Scale Structure in Ecosystems Diversity and Ecological Functions: Pollination Future Research Projects Impact of White Perch on Walleye Spatial Risk Assessment of Invasive Species Impacts on Native Species in Nebraska Graduate Students (Donald (Don) Wardwell; Elizabeth (Beth) Forbus; Aaron Lotz) EVENTS Conferences/Meetings

St. Croix National Scenic Riverway Aquatic Invasive Species Interagency Task Force: 2005 Action Plan For The Lower St. Croix River

National Invasive Species Council

This plan outlines strategies and actions proposed by the participating agencies for the 2005 season to help accomplish the Task Force purpose and implement actions from the St. Croix Scenic Riverway Comprehensive Interstate Management Plan.

Implementing this action plan will help attain the following goals of the comprehensive interstate management plan:

Goal I: Prevent or slow the spread of aquatic invasive species into and within the St. Croix River.

Goal II: Abate harmful ecological, economic, social and public health impacts resulting from infestation of aquatic invasive species.

Asian Carps Of The Genus Hypophthalmichthys (Pisces, Cyprinidae) ― A Biological Synopsis And Environmental Risk Assessment, Cindy S. Kolar, Duane C. Chapman, Walter R. Courtenay Jr., Christine M. Housel, James D. Williams, Dawn P. Jennings

National Invasive Species Council

Carps of the family Cyprinidae, the largest family of freshwater fishes in the world (Nelson 1994), have long been introduced beyond their native ranges, a practice that continues today. Although carps have been introduced for several centuries, the widespread introduction of the genus Hypophthalmichthys, the bigheaded carps, is a relatively recent phenomenon. All three recognized species of Hypophthalmichthys—H. nobilis, in North America referred to as Bighead Carp; H. molitrix; Silver Carp; and H. harmandi, Largescale Silver Carp—are native to fresh waters of eastern Asia. Largescale Silver Carp have been introduced elsewhere in west-central Asia as a …

Focus Group Conference Report And Pathways Ranking Guide: June- August 2005

National Invasive Species Council

This document represents the second version of a guide and process for pathway definition, analysis and prioritization. It is expected that this document will undergo another trial test and revision prior to full implementation, though we strongly believed this is a ‘workable’ product that only requires refinement.

Throughout this systems development process, the Pathways Work Team struggled with several issues relevant to scientific data and public policy. While this report in no way attempts to resolve such intricate issues, it is essential that these considerations be brought to the forefront for future decision-making efforts and as such are enumerated below: …

Spatial Patterns Of Cadmium And Lead Deposition On And Adjacent To National Park Service Lands In The Vicinity Of Red Dog Mine, Alaska, L. Hasselbach, J.M. Ver Hoef, J. Ford, P. Neitlich, E. Crecelius, S. Berryman, B. Wolk, T. Bohle

United States National Park Service: Publications

Heavy metal escapement associated with ore trucks is known to occur along the DeLong Mountain Regional Transportation System (DMTS) haul road corridor in Cape Krusenstern National Monument, northwest Alaska. Heavy metal concentrations in Hylocomium splendens moss (n =226) were used in geostatistical models to predict the extent and pattern of atmospheric deposition of Cd and Pb on Monument lands. A stratified grid-based sample design was used with more intensive sampling near mine-related activity areas. Spatial predictions were used to produce maps of concentration patterns, and to estimate the total area in 10 moss concentration categories.

The Use Of Discontinuities And Functional Groups To Assess Relative Resilience In Complex Systems, Craig R. Allen, L. Gunderson, A. R. Johnson

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

It is evident when the resilience of a system has been exceeded and the system qualitatively changed. However, it is not clear how to measure resilience in a system prior to the demonstration that the capacity for resilient response has been exceeded. We argue that self-organizing human and natural systems are structured by a relatively small set of processes operating across scales in time and space. These structuring processes should generate a discontinuous distribution of structures and frequencies, where discontinuities mark the transition from one scale to another. Resilience is not driven by the identity of elements of a system, …

Factors Affecting Regional Variation In Growth Of Channel Catfish, Bart W. Durham, Kevin L. Pope, Gene R. Wilde

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

We related the length at age of channel catfish Ictalurus punctatus, an indirect measure of growth, to three climatic and five morphoedaphic variables in 144 Texas reservoirs. Growth of channel catfish ages 3 through 6 was negatively related to longitude, a factor that explained as much as 34% of the variation in length at age. Channel catfish length at age was not significantly related to latitude, conductivity, morphoedaphic index, mean depth, and maximum depth in all age-classes. Among age-7 channel catfish, length at age was positively related to reservoir area, which explained 35% of the variation in growth. A …

Assessing And Evaluating Honors Programs And Honors Colleges: A Practical Handbook, Rosalie Otero, Robert Spurrier

National Collegiate Honors Council Monographs

Systematic use of evaluation and assessment is one of the core principles guiding education. A considerable portion of current educational research addresses the effectiveness of evaluation and assessment at all levels of education. The relevance of assessment and evaluation has been dramatically increased by the current political tendency to decentralize the responsibility for educational processes. At the same time, students and parents are becoming more aware of differences in quality between schools and programs and more inclined to hold faculty and administrators accountable for their institutions' achievements. Both developments have led to a need for setting explicit standards for educational …

Symmetry And Symmetry-Breaking: An Approach To Understanding Beauty, Carol Bier

Textile Research Works

Considering the relationship of symmetry and beauty, the author examines three textiles from the collection of Doris Duke at Shangri La in Honolulu. Referring to abstract expressionism of the 20th century as antithetical to symmetry, and the Arts & Crafts Movement of the 19th century as countering the insistency of industrial mass production, Bier explores the relative roles of symmetry and symmetry-breaking in the construction of three embroideries (called suzani, after the Persian and Tajik word for “needlework”), using as her point of departure a recent research initiative, the Shangri La Suzani Project. The study of colors, motifs, stitches, designs …

Use Of An Electronic Nose To Diagnose Mycobacterium Bovis Infection In Badgers And Cattle, R. Fend, R. Geddes, S. Lesellier, H.-M. Vordermeier, L. A. L. Corner, E. Gormley, E. Costello, R. G. Hewinson, D. J. Marlin, A. C. Woodman, M. A. Chambers

Michigan Bovine Tuberculosis Bibliography and Database

It is estimated that more than 50 million cattle are infected with Mycobacterium bovis worldwide, resulting in severe economic losses. Current diagnosis of tuberculosis (TB) in cattle relies on tuberculin skin testing, and when combined with the slaughter of test-positive animals, it has significantly reduced the incidence of bovine TB. The failure to eradicate bovine TB in Great Britain has been attributed in part to a reservoir of the infection in badgers (Meles meles). Accurate and reliable diagnosis of infection is the cornerstone of TB control. Bacteriological diagnosis has these characteristics, but only with samples collected postmortem. Unlike …

Research Experiences For Teachers In Materials Science: A Case Study, Michelle A. Strand, Steve Wignall, Diandra Leslie-Pelecky

Materials Research Science and Engineering Center: Faculty Publications

The National Science Education Standards encourage teachers to become involved in research as ‘representatives of science in the classroom’. The Research Experiences for Teachers program affiliated with the Materials Research Science and Engineering Center at the University of Nebraska involves teachers in research on nanoscale magnetic and electronic structures over a summer. Two teachers and a sponsoring researcher share their experiences and what they believe are necessary elements for successful RET experiences.

Survey Of Changes In Science Teacher Preparation Programs Responding To Performance-Based Science Standards, Steven Gilbert, Jon E. Pedersen, Cheryl Mason

Department of Teaching, Learning, and Teacher Education: Faculty Publications

This study presents the results of two web-based surveys of 23 science teacher preparation programs having functional standards-based candidate performance assessment systems recognized by the National Science Teachers Association (NSTA) through the National Council for the Accreditation of Teacher Education (NCATE). Our goal was to determine the degree and nature of changes made to these programs as they sought to gain NSTA-NCATE program recognition. The results indicate that most programs made major changes as they implemented performance assessment systems, now pay more attention to documenting candidate performances in all areas of concern covered by the standards, and believe the changes …

Spatiotemporal Patterns And Changes In Missouri River Fishes, David L. Galat, Charles R. Berry, William M. Gardner, Jeff C. Hendrickson, Gerald E. Mestl, Greg J. Power, Clifton Stone, Matthew R. Winston

Nebraska Game and Parks Commission: Staff Research Publications

The longest river in North America, the Missouri, trends southeast from Montana across the mid continent of the United States, 3,768 km to its confluence with the Mississippi River near St. Louis, Missouri. Frequent flooding, a shifting, braided channel, and high turbidity characterized the precontrol “Big Muddy.” Major alterations occurred over the past century primarily for flood protection, navigation, irrigation, and power production. Today, the middle one-third of its length is impounded into the largest volume reservoir complex in the United States and the lower one-third is channelized, leveed, and its banks stabilized.

Spatial and temporal patterns of Missouri River …

Plant Community Field Surveys In Eastern Nebraska Project Final Report, Alicia Admiraal

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

This project was completed as part of the Nebraska Game and Parks Commission’s (NGPC) State Wildlife Comprehensive Conservation Plan. As part of this project, inventory and assessment of native plant communities and at-risk habitats throughout the state of Nebraska is necessary. This report describes the field inventories of native grasslands and other plant communities conducted during the 2004 field season for the Elkhorn River valley in Madison, Stanton and Dodge counties, and the Platte River valley between the towns of Columbus and Schuyler, in Platte and Colfax counties. Funding for the project was provided by the US Fish and Wildlife …

2005 Plant Community Field Surveys In Western Nebraska, Robert F. Steinauer

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

These surveys were undertaken to provide biological data for the Nebraska Game and Parks Commission’s (NGPC) Nebraska Natural Legacy Action Plan. The specific intent was to identify, map, and give quality rankings to large blocks of privately-owned native plant communities within the survey area. In 2005, the surveys focused on Keith, Deuel, Cheyenne, Kimball, Banner, and Scotts Bluff counties, Sioux, Dawes and Sheridan counties north of the Pine Ridge, and Garden County south of the North Platte River.

Focus Emu, March 29, 2005, Office Of Public Information

Focus EMU

No abstract provided.

Focus Emu, May 10, 2005, Office Of Public Information

Focus EMU

No abstract provided.

Board Of Regents Meeting Materials, August 2, 2005, Eastern Michigan University

Board of Regents Meeting Materials

No abstract provided.

Nebraska Earth Systems Education Network – Winter 2004/05

Nebraska Earth Systems Education Network

Content:

Sand Hills Biocomplexity Project 2005 by Monica Sanford

The Sand Hills Biocomplexity Project: An Interview with Dr. Dave Wedin by Monica Sanford

Science: Think Outside the Box by Monica Sanford

New UNL Web Site Sells Everything from Maps to Rocks

Geographic Educators of Nebraska Sponsors Summer Workshops

Government Auditing Standards And Circular A-133 Audits - 2005; Audit Risk Alerts, American Institute Of Certified Public Accountants

Industry Guides (AAGs), Risk Alerts, and Checklists

No abstract provided.

Changes In Lake Whitefish Diet In Lake Michigan, 1998-2001, Stephen A. Pothoven

United States Department of Commerce: Staff Publications

Lake whitefish (Coregonus clupeaformis) were collected for diet analysis from Michigan’s waters of Lake Michigan during 1998-2001. When the benthic amphipod Diporeia spp. was available, it was an important item in the diets of small (<430 mm) and large (>430 mm) lake whitefish. In southern Lake Michigan, the most-common prey consumed in the absence of Diporeia spp. included zebra mussels (Dreissena polymorpha), gastropods, chironomids, and Mysis relicta. In northern regions of the lake, alternative prey included chironomids, isopods, Bythotrephes, and fish. Following the decline of Diporeia spp. in southeastern Lake Michigan between 1998 and 2001, their contribution …

Population Histories Of Right Whales (Cetacea: Eubalaena) Inferred From Mitochondrial Sequence Diversities And Divergences Of Their Whale Lice (Amphipoda: Cyamus), Zofia A. Kaliszewska, Jon Seger, Victoria J. Rowntree, Amy R. Knowlton, Kim Marshalltilas, Nathalie J. Patenaude, Mariana Rivarola, Catherine M. Schaeff, Mariano Sironi, Wendy A. Smith, Tadasu K. Yamada, Susan G. Barco, Rafael Benegas, Peter B. Best, Moira W. Brown, Robert L. Brownell Jr., Robert Harcourt, Alejandro Carribero

United States Department of Commerce: Staff Publications

Right whales carry large populations of three ‘whale lice’ (Cyamus ovalis, Cyamus gracilis, Cyamus erraticus) that have no other hosts. We used sequence variation in the mitochondrial COI gene to ask (i) whether cyamid population structures might reveal associations among right whale individuals and subpopulations, (ii) whether the divergences of the three nominally conspecific cyamid species on North Atlantic, North Pacific, and southern right whales (Eubalaena glacialis, Eubalaena japonica, Eubalaena australis) might indicate their times of separation, and (iii) whether the shapes of cyamid gene trees might contain information about changes in the population …