Karl Dahlke
			4704 Bonniebrook Drive;  Troy, MI 48098
			Home:  [Send email to request phone number] 24-0915     Office:  [Send email to request phone number] 24-1004

	Summary

Data management and data analysis are reoccurring themes throughout my
professional career.  This began with the internals of the home-grown
database in the 5ESS telephone switch, and continued through Informix,
Oracle, mysql, and other commercial databases.  At Rush Medical Center,
I integrated data from several disparate sources, and created one
comprehensive Informix database with 2 million patients and tens of
millions of medical records.  I discovered over 7,000 duplicate patients
in the system within the first six months, and refined my patient
matching algorithms over the next few years.  These algorithms were
purchased by a startup company,  Initiate Systems.com,  which now
realizes approximately 35 million dollars of revenue per year.  Turning
to pure research, the medical database that I currently manage, with
100,000 patients and 5 million images, has yielded clinical results that
have been published in several peer reviewed journals.  If data is
important to your business, I can help.

	Experience

Neuro Metrix Inc.: January 2000 – Present
 Database Administrator, Chief Information Officer 
(When Neurometrix purchased Eyetel Imaging in December 2007,
my duties remained the same.  I accomplished these tasks
as a telecommuter 700 miles from the main office.)

*   Designed, developed, and administered an Informix medical database,
running on Linux, that currently houses 100,000 patients and 5 million
medical images.

*   Wrote applications to acquire data remotely from the doctor's
office, and make reports available to him over the Internet.

*   Built a gateway and firewall for our intranet, that allows medical
data in and out, while ensuring security and patient privacy.  Our
servers boast 6 years of uninterrupted service, with no viruses, no
security breeches, and an availability of over 99%.

*   Analyzed the data and made the results available for outcome
analysis.  With support from the Johns Hopkins Institute, several papers
have been published in peer reviewed journals.

Premiere Technologies: November 1995 - December 2000
System's Programmer

* Developed error correction algorithms for voice dialing (digits or
name), based on calling history.  This reduced error rates from 30% down
to 4%, and made the service viable in the marketplace.

* Designed and implemented a text preprocessor, so that emails can be
read over the phone by a speech synthesizer.  This was quite successful,
but is rarely used today, now that cell phones have screens.

Rush Presbyterian St. Luke's Medical Center: March 1991 - October 1995
Database Administrator - Software Architect

*   Gathered data together from several departments within the hospital
and created one central database, with 2 million patients and tens of
millions of medical records.

*   Designed and built applications to take advantage of the new,
integrated data set.  This effectively streamlined operations at the
hospital, saving money and improving patient care.

*   Cleaned up the data, which contained thousands of duplicate patients
and misassigned medical records.

*   Developed a record linkage algorithm that decides statistically
whether two separate medical records with imperfect data do or do not
belong to the same patient.  A mistake in either direction can put a
patient's health at risk.  My patent rights were purchased by Initiate
Systems, a company that now earns 35 million dollars a year in revenue,
and is about to go public.

	Education

Michigan State University: July 1982, BS+MS, Computer Science, 3.92/4.00

My master's project was a speech adapter for the blind, running on the
Apple 2+. That was 20 years ago; a more advanced version of this adapter
is now available for Linux. eklhad.net/linux/jupiter

University of California Berkeley: December 1990, MS, Math, 3.76/4.00

I took a wide variety of courses, with an emphasis on algebraic number
theory. In my spare time, I am making this graduate level material
available to others through MathReference.com.

	Skills

*C, Fortran, Pascal, Basic, Java, and Intel Assembly

* Shell (bash) scripts, awk, sed, perl

* Extensive relational database experience  Includes SQL, embedded SQL
in C, and ODBC. I was the primary architect for a complex hospital
database containing hundreds of interconnected tables, some holding
millions of rows.

* 15 years Experience with Informix  Stored procedures, 4gl, and
database administration tools.

* Linux, including Linux internals (I have developed loadable modules,
and modified the kernel itself.)

* High availability systems, including Linux raid partitions

* Networking, firewalls, and routers,  including Linux ipchains and
iptables 

* Strong background in mathematics

* Security clearances at the top secret level.

	Publications

A Heptomino of Order 76 (Journal of Combinatorial Theory, Series A 51
(1989), no. 1, pp. 127-128.)

	Community Service

In my spare time I have written adaptive software for disabled users,
such as edbrowse; edbrowse.sourceforge.net.
This is now bundled with some Linux distributions, such as grml.org.
See MathReference.com for a fully accessible math site.