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VIRGINIA MOUNTAIN SECTION NEWSLETTER

IEEE  Region  3,  Council  9,  Section  65                      May 1995
*****************************************************
CONTENTS:
        May Meeting - Technical Seminar
        Talk Abstracts
        VMS Activities
        IEEE Problems
        Computer/Control/IES
        Region Activities - Job Hunting
        USA IEEE Hotlines
        For Your Information

*****************************************************

        May Meeting
        VMS  Presents   Its First

        TECHNICAL SEMINAR
Quality Inn - Salem
7:00 PM, Thursday
May 25, 1995

The Virginia Mountain Section is presenting its first Technical Seminar at
the May meeting. Section members and students will tell us about their
expertise and areas of interest.

The format for the affair is a departure from our usual dinner-meeting. A
buffet will be available at all times, beginning at 6:30. You may come and
go as you like. Technical presentations will be brief, 20 minutes max., to
accommodate as many as possible.  At this time, five people have registered
to present papers listed below. The authors are all students at Tech. The
first listed paper is by a group of undergraduates, the remainder are
graduate level papers.

'The development of the Virginia Tech Virtual Campus'
Elan Yanliv, David Moye, Roger Skidmore, and Peter Athanas:

'TCP/IP traffic multiplexing as a low cost approach to internet connectivity'
Rhett Hudson and Ray Bittner

'Microbending effects in singlemode optical fibers: Investigation and novel
applications'
Vivek Arya

'Real-time pre-processing of holographic information'
Brad Schilling and T. C. Poon

'Parameter estimation of exponential signals in colored noise environments'
Tong-Zhang Kou

Cash prizes will be awarded in at least two categories. Winners will be
selected by the VMS Executive Committee immediately following the last
presentation. HOWEVER, you will have an opportunity to vote for the paper of
your choice on forms to be available at the meeting. Your votes will be
carefully considered by the Committee. The Committee's role is simply to
avoid a ballot-stuffing contest by potentially enthusiastic attendees.

Abstracts of the papers listed, follow the Reservations announcement.

Reservations
for the May Meeting

        Thursday, May 25
        Time:   6:30 PM Social (Buffet Available)
                7:00 PM Talks Begin
        Place:  Quality Inn - Salem
                Route 419, east of I-81
                at Exit 141
        Cost:   Member or Guest FREE
                Student                 FREE

For reservations, please contact one of the following representatives before
5 PM on Monday, April 17:

Roanoke:            John Naber          563-3913
                    Hausila Singh               563-8639
Blacksburg:         Lynn Abbott         231-4472
                    Wayne Scales                231-5622
Lexington:          Dick Skutt          464-7236
Radford and
Christiansburg:    Russell Churchill    731-0655


                Abstracts

        The Development of the Virginia Tech Virtual Campus

This paper discusses the modeling of a large academic institution, the
Virginia Tech campus, and transforming the model into a virtual world. This
project is being implemented using a development package produced by VREAM,
Incorporated. Aspects which are unique to this project are the large scope
and complexity of the virtual world, and the large work-force behind its
development. Because of these two factors, creative project management is
essential. The reasoning behind the creation of the virtual campus, the
VREAM development system, the potential impact of a large scale virtual
world on the various academic departments, and the procedures used in
developing a complex virtual world are all discussed.


        TCP/IP Traffic Multiplexing as a Low Cost Approach to Internet
Connectivity

The Blacksburg Electronic Village (BEV) project is researching the social
and technical implications of providing electronic connectivity to a small
town. Several apartment complexes in Blacksburg have been wired for twisted
pair Ethernet. BEV policy issues one internet protocol (IP) address for each
connection that is activated in an apartment and Bell Atlantic charges a
monthly rate for Internet access. If residents of an apartment have more
than a single computer that they wish to connect to the Internet, a minimal
cost approach would be to find a novel way to multiplex IP traffic from all
the computers inside the apartment onto a single connection using a single
IP address. It is not difficult to connect multiple computers to a single
Ethernet connection. The difficulty is making multiple computers appear to
be a single Internet host with a single IP address. This is accomplished by
establishing a local area network (LAN) within the apartment that connects
the internal computers to a machine serving as a dedicated IP traffic
multiplexer. To the computers inside the apartment the multiplexer looks
like a normal LAN. To the rest of the Internet, the machine appears to be a
single well behaved host. The multiplexing operation is transparent to all
commonly used networking software.


        Microbending Effects in Singlemode Optical Fibers: Investigation and
Novel Applications

Generation, transfer, and utilization of information using novel means has
been the hallmark of technological advances in the last quarter of the
twenty-first century. Rapid advances in four areas: microelectronics,
phonics, software, and networking, have been the key factors contributing to
this evolution. Perhaps the single most important factor responsible for the
genesis of a global village has been the advent of optical fiber-based
communication systems; multi-gigabit networks are linking people and places.
Another area in which the optical fiber has distinguished itself has been
sensor instrumentation systems. Fiber-based sensors are finding novel and
diverse applications during precision measurements in industrial and
research environments. Often, transduction mechanisms responsible for
sensing are adopted in the fabrication of devices useful for communication
systems. Periodic, axial microbending of optical fibers is an example of one
such mechanism. The main objective of this research was to perform a
systematic evaluation of microbending effects in singlemode optical fibers
and demonstrate applications in the fabrication of novel devices and
components for optical fiber-based sensor instrumentation and communication
systems. This innovative research, which formed the basis of the author's MS
thesis, has resulted in 3 patent disclosures, 2 journal papers, and 6
conference presentations in the last nine months.


        Real-time Pre-processing of Holographic Information

Holographic information pertaining to an object can be generated using an
active optical heterodyne scanning technique.  In optical scanning
holography, the holographic information manifests itself as an electrical
signal suitable for real-time image reconstruction using a device such as a
spatial light modulator.  The electrical signal which holds the holographic
information can also be digitized for computer storage and processing,
allowing the image reconstruction to be performed numerically.  In previous
experiments with this system, holographic information has been recorded
using the interference pattern of a plane wave and a spherical wave of
different temporal frequencies to scan an object.  However, the proper
manipulation of the pupil functions in the recording stage can result in
real-time processing of the holographic information of an object prior to
recording.  In this paper, we propose a holographic edge extraction
technique as an important example of real-time pre-processing of holographic
information which utilizes alternate pupils in the optical scanning
holographic recording stage.  We investigate the theory of holographic
pre-processing using a spatial frequency-domain analysis based on the
recording system's optical transfer function (OTF).  The theory is
reinforced through computer simulation.


        Parameter Estimation of Exponential Signals in Colored Noise
Environments

An algorithmic procedure is presented for the identification of the
parameters of exponential signals, measured in colored noise. Previous
papers on identifying sinusoids in noise have concentrated mainly on white
noise disturbances. In a practical environment however, the disturbance is
usually colored; sea-clutter in a radar context, is a lowpass type noise for
example. When least squares type estimates are used in the colored noise
environment, this usually leads to an unacceptable bias in the estimates. We
propose an identification method, named Singular Value Decomposition Bias
Elimination (SVDBE), in which it is assumed that the noise can be
represented well by an AR process. The parameters of this noise model are
then iteratively estimated along with the exponential signal parameters, via
Singular Value Decomposition (SVD) based least squares. The iteration
process starts with the white noise assumption, and improves on that by
allowing the parameters in the noise model to vary away from the white noise
case. A high order modal decomposition is found, and the best subset of the
identified modes is selected. Simulations assess the merits of the
introduced SVDBE algorithm.

VMS Section Activities

Meeting Report
Grayson Electronics, Lynchburg VA, manufactures components and test
equipment for the cellular communications industry. Mr. Rick Timmons,
Product Development Engineering Manager at Grayson, discussed the pros and
cons of the major cellular systems in use in this country: the original
AMPS, its successors NADC, and TDMA, and the upcoming digital CDMA. He
described the basic cellular concept, variations on it imposed by economic
considerations, and how they are employed to expand service (number of
active mobile sets) while maintaining constant coverage in any geographic
area. Practical aspects of handling the basic incompatibilities of the
various systems and how they perform during hand-offs between base stations
and fading conditions were also presented.

Mr. Timmons described some of the products developed and manufactured at
Grayson, and showed several subassemblies which were circulated for viewing.
...editor

IEEE Problems:  Is Your Record Current?
Another reminder: IEEE Headquarters is experiencing non-trivial problems
with the computer and associated files. End result, of immediate concern to
us, is that they have little confidence in the integrity of the membership
data bases. If you have any doubt about the status of your records at IEEE,
e.g., missing some mailings, notify them, immediately if not sooner. See For
Your Info on the last page of this Newsletter. Also, if you know of any
member(s) who is not receiving expected services, please get in touch and
have them send or call in an update.

Note: Monthly mailing list updates shipped to the Newsletter have a greatly
decreasing number of active members recorded. The total has dropped by 57
since January. We have no way of determining if this is a true records
update event or records being lost. Please check with your colleagues to see
if they are really registered.
...editor

Electronic Newsletter
If you have not yet subscribed you are strongly encouraged to do so. No, we
will not remove your name from the regular mailing list if you do sign up.

To Subscribe, see instructions in the For Your Information section on the
last page.

Tidbit: Scott Midkiff noticed that our newest and most distant subscriber is
in Latvia. No, we do not know why.
...editor


Computer/Control/IES Chapter

Spring Video '95 SeriesNo.5: What Digital Engineers Need to Know About
Wireless  DAVID L. LYONCirrus LogicTuesday, May 9, 5:30 PMGeneral Electric
Co. Auditorium1501 Roanoke Boulevard, Salem, VAIn this tape, David Lyon,
President of Pacific Communications Sciences, a Cirrus Logic Company,
reviews key mathematical principles of communication technology as applied
to digital wireless systems. He also outlines the analog element, which can
never be wholly eliminated. Lyons reviews important practical examples and
demonstrates how principles can be applied.

As a follow up to Rick Timmons talk at the prior section meeting this tape
should have been of interest not only to wireless designers, but also to
digital designers to whom AMPS, TDMA, CDPD, and PCS are not proper English
nouns.

Sandy Gurian, GE design engineer and our host for the first four sessions of
this year's series will preview the tape and lead discussion afterwards.

IEEE VMS Video Library
To borrow this or any other tape shown in this year's series, contact Dave
Geer or Carol Weaver at GE.

Free Magazines!
As part of its membership drive, the IEEE Control Systems Society again
offers a free copy of the latest issue of Control Systems Magazine to
prospective members. If control systems are your thing, you should try one.
Contact Dave Geer for yours. There is no obligation.

Dave Geer, Chairman
Phone: 703-387-7359
e-mail: geer-dh@salem.ge.com
Note the change from underscore to hyphen, but... if it bounces, try it the
old way. Progress is our most important product...)


IEEE VMS Video Series Review

Why Black Boxes are Hard to Reuse...
Gregor Kiczales, Xerox PARC
95 IEEE VMS Video Series, April 4, 1995

Traditional computer science* teaches us to master complexity through
abstraction and information hiding. The goal is to provide a simple
interface for the client, while hiding the ugly details inside.
Unfortunately, some of the ugly secrets are mapping decisions, not details.

Examples of mapping decisions are the paging policy for virtual memory
systems, or window constraints for a window interface. With the Black Box
approach these implementation choices are not just hidden, they are locked
in. When a client programmer needs to change these decisions, a mapping
conflict arises. How does the client cope?

Traditionally, clients had few choices: duplicate the functionality, e.g.
write your own windows package without the constraints that bug you, and
ignore the operating system package, or keep every thing at a low level,
e.g. write everything in "C" so you can get right in and twiddle those
registers. Never mind that it's been done before, I can do it better.

Kiczales method is to identify the mapping decisions, and give clients
control over them. Examples are the pragmas in Ada, or proprietary compiler
switches in other languages. He identifies issues that arise and recommends
solutions for some of them. Others are still work in progress.
In spite of the small turn-out, a lively discussion followed this tape.
Viewers related examples of their own experience with mapping conflicts, and
how they solved them. Plan to watch this tape more than once if you borrow
it. There is some very good stuff here.

Susan Kraterfield provided us with a comprehensive outline of the tape.
Copies of her note sheet are available for those who wish to pursue these
issues further. Contact Susan, or Dave Geer at GE.
...Dave Geer

*No, this is not an oxymoron.


Region Activities
JOB Hunting

As part of the effort to assist members who are in the throws of job hunting
or just curious about available positions, the Region has been building a
database of area employers of engineers. It came on line (e-mail) on a trial
basis last fall and is now ready for use. A related BBS is also available.
The following is excerpted from the Spring 1995 Region 3 Newsletter:

Region 3 Employment Service Available
The IEEE-Region 3 Electro-Technology Industry Database (ETI Db) is currently
available for Region 3 member use. Currently the ETI Db focus is on electro
technology industries within the geographical boundaries of Region 3, with
approximately 40,000 companies and points-of-contact identified. Region 3
members can request access to the system via Internet/e-mail and search
employers of engineers by area code, Standard Industry Identification (SIC)
Code, ZIP code, city, state and other variables (or combination of variables).

To use this Database:
  - E-mail a system access request to: empaccess.r03@eng.uab.edu using the
following format:

        NAMELINE: |Membership #||Last Name, First MI|
        ADDRESS1: |Address Line #1|
        ADDRESS2: |Address Line #2|
        ADDRESS3: |Address Line #3|
        SECTNAME: |Section Name|
        STBRANCH: |Student Branch Name|
        HOMENMBR: |Home Phone Number|
        WORKNMBR: |Work Phone Number|
        EMPLOYER: |Employer|
        EMAILADR: |E-Mail Address|

- After being granted access, E-mail system search requests to:
emp.r03@eng.uab.edu

- Mail all comments or questions regarding system operation to:
empadmin.r03@eng.uab.edu

If you know students or unemployed engineers who are not members of the IEEE
and could benefit from the Region 3 ETI Db system, have them contact Mr.
James M. Howard, Region 3 Membership Development Committee Chair, at the
address/phone numbers listed on Page 15.

Questions and comments on general system operation should be addressed to:

ETI Database Coordinator, David Green, UAB
E&CE Department, Birmingham AL 35294-4461
Tel: (205) 934-8440; Fax: (205) 975-3337;
e-mail: empadmin.r03@eng.uab.edu

ELECTRO-TECHNOLOGY INDUSTRY DATABASE 1995 PLANNED ACTIVITIES
To complete the ETI Database Project Phase 3 milestone, the Region 3
Professional Activities Operation, Employment Assistance Subcommittee will
expand the database to include selected states outside Region 3. Director
Powers indicated that students and professional members may have a need to
seek employment outside Region 3 and the inclusion on outside states would
aid their employment search. States of particular interest are those that
are in economic recovery and are hiring electro-technology professionals.
Another enhancement and 1995 goal for professional activities is to
establish a procedure to permit Region entities (chapters. sections,
area/councils) to support data entry for new entries and to further fill out
the database.

Region 3 Bulletin Board System
Our second project, known as the "Region 3 Bulletin Board System (BBS) was
started in the spring of 1995 and became operational during the winter of
1995. The intent of the R-3 BBS is to improve communications within our
region by providing a central point to share information about the
Institute. Region, Area/Council, Section, and most importantly the
membership. A major reason for the existence of our BBS is to provide
employment assistance to our members by listing job opportunities The R-3
BBS was demonstrated at the R-3 Excom meeting January 28-29, l995 in
Birmingham, AL.

If you have a Personal Computer (PC) with a communications modem and
software and are an IEEE member within Region 3, all you to do is dial via
you modem the following number:

1 -800-555-REG3 or 1-800-555-7343
(members outside the Atlanta area)
; or: 404-446-0740
(members within the Atlanta area)

You will log on by providing your name @ it appears on your membership card.
This will become your user 11 Your password will be your IEEE member number.
Then follow the menu. Job listings are found by keying to R-3 Professional
Activities |G| then Employment/Job Postings |E|. A major effort will be made
by the PAO-Employment Assistance Subcommittee in 1995 to expand and enhance
this employment assistance service by adding job listings from major
newspapers, job agencies, and member companies within the Southeast.

IEEE-USA  HOTLINES

Speak Out On Tort Reform
Have you ever been the subject of a frivolous lawsuit for engineering work
you've done? Have you or your employer ever decided not to take a job,
develop a product or provide a service because of the insurance costs or the
fear of potential liability? Are you willing to share your experiences with
the public and with Congress?

IEEE-USA has joined with the American Tort Reform Association in supporting
ongoing Congressional tort reform efforts. Your personal accounts can help
us illustrate civil justice system problems and make the case for fair and
effective reforms.

If you have a story to tell and are willing to join in this effort, send
complete details to: Tort Reform, IEEE-USA 1828 L Street, NW, Suite
1202,Washington, DC 20036-5104; or fax to (202) 785-0835. For more
information, contact Chris Brantley at (202) 785-0017, ext. 303 (phone);or
e-mail c.brantley@ieee.org (Internet).

Join the Fight  to Preserve Federal R&D Funding
Congress' first 100 days have witnessed significant federal R&D funding cuts
in a variety of areas. In response, IEEE's United States Activities Board
(USAB) Chair Joel B. Snyder and Marvin H. Hammond, chair of IEEE-USA's
Research and Development Policy Committee, recently issued an electronic
mail alert to US IEEE members, urging them to contact their Senators and
Representatives about Congressional actions to reduce this funding.
For example, the Advanced Technology Program at the National Institute of
Standards and Technology, and the Technology Research Project, managed by
the Department of Defense's Technology Reinvestment Project, have been
singled out for large reductions. Critics of federal involvement in applied
research and federal budget-cutters have attacked these programs, along with
energy supply R&D, university R&D, the manufacturing extension partnership,
and national laboratory technology transfer. The rescissions are part of a
larger debate raging in Congress on the federal government's role in
technology development. For more information, contact Jim Anton at the
IEEE-USA Office in Washington, D.C.: by phone at (202) 785-0017, ext. 320;
or by e-mail at j.anton@ieee.org (Internet).

USAB Chair Seeks Reexamination of Current Immigration Policies
Calling for a reexamination of current immigration policies USAB Chair Joel
B. Snyder testified on Feb. 23 before the US Commission on Immigration
Reform on employment-based immigration. He asked the Commission to reassess
current policies governing the entry of foreign engineers and other skilled
workers into the United States, in light of changing economic, technological
and employment conditions in the United States.   Snyder cited statistics
showing that admissions of foreign engineers and scientists into the United
States have skyrocketed, while engineering unemployment has reached record
high levels. He added that labor certification requirements should be
extended to all employment-based immigration admissions, both permanent and
temporary. Additional information is available from Vin O'Neill at the
IEEE-USA Office in Washington D.C.: (202) 785-0017, ext. 319 (phone): or
e-mail v.oneill@ieee.org (Internet).

IEEE-USA Cites Flaws in Air Traffic Control, Outlines Measures to Improve Safety
Claiming that congested airways and obsolete navigation, communications and
flight equipment increase the risk of air disasters, IEEE-USA has urged
prompt action to update the cur-rent system with existing advanced technology.

For more information, contact Jim Anton at the IEEE-USA Office in
Washington, D.C.: (202) 785-0017 ext. 320 (phone); e-mail j.anton@ieee.org
(Internet).



5 For Your Information



Change of Address
Submit ito:   IEEE Service Center
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Editor:     Telephone: 703-552-0052.
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            For FAX, please pre-arrange via telephone.
Alternate:  Wayne Scales
            e-mail: wayne@starchild.ee.vt.edu.
Deadline: Material for the Aprily issue must be received by Monday, August
21, 1995.

E-MAIL Newsletter subscription
Send the one-line message:
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Virginia Council Newsletter
Editor: Adeeb Hamzey    Telephone:  804-796-6183

USAB     IEEE-USA
        1828 L St. NW, Suite 1202
        Washington, DC 20036-5104
        Telephone:    (202) 785-0017

IEEE Virginia Mountain Section
Chairman:       Hausila Singh           563-8639
Vice Chairman:  Wayne Scales            231-5622
Sec./Treasurer: James R. Griffiths      563-3934
Executive Committee:
Daniel W. Jackson                       774-0484
Scott Midkiff                           231-5190
John Naber                              563-3913
        (one current vacancy)

Virginia Council
Representative: Dick Skutt              464-7236

Industrial Application Chapter
Chairman:       Walter Hill             387-8619

Power Engineering Chapter
Chairman:       Jamie De La  Ree                231-6625

Microwave Theory & Techniques/Electron Devices Chapter
Chairman:       Inder Bahl              563-8638

Industrial Electronics/Computer/Control Systems Chapter
Chairman:       David Geer              387-7359

Newsletter
Editor:         John Fennick            552-0052


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