DAVID WALTER CAMPBELL
Pilots at Dellwood Ave, Boulder, CO
License number
Colorado A4728372
Issued Date
Feb 2015
Expiration Date
Feb 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
777 Dellwood Ave, Boulder, CO 80304
Personal information
See more information about DAVID WALTER CAMPBELL at radaris.comName
Address
Phone
4870 E Missouri Ave, Denver, CO 80246
495 22 1/4 Rd APT 1, Grand Junction, CO 81507
11135 Clermont Dr, Denver, CO 80233
1250 Popes Valley Dr, Colorado Springs, CO 80919
2225 Logan St, Denver, CO 80210
Professional information
David Campbell
Position:
CoFounder and CEO at SafeInstance, CoFounder and Architect at MobileScope, Principal Consultant at Electric Alchemy
Location:
Greater Denver Area
Industry:
Computer & Network Security
Work:
SafeInstance
- Boulder, CO since Aug 2012
-
CoFounder and CEO
MobileScope
- Denver, CO since Apr 2012
-
CoFounder and Architect
Electric Alchemy
since 2003
-
Principal Consultant
OWASP
Nov 2007 - Nov 2011
-
Chapter Leader & Evangelist
United States Antarctic Program
Jul 2007 - Sep 2008
-
Head of Security Engineering
ABN AMRO
2004 - 2006
-
Senior Security Architect
Accenture
1998 - 2002
-
Consultant
Skills:
Penetration Testing, Social Engineering, Red Team Testing, Application Security, Code Review, Mobile Security, Red Team, Vulnerability Assessment, Identity Management, Incident Response, Testing, Information Security, Early-stage Startups, Lock Picking, VOIP, Cloud Security, Martial Arts, Static Analysis, Fuzzing, Exploitation, Private Pilot, Snowboarding, SaaS, PaaS, IaaS, Cloud Computing, Node.js, Nginx, Python, DevOps, Puppet
Methods, Apparatus, And Computer Program Products For Determining Structural Motion Using Mode Selective Filtering
US Patent:
6694279, Feb 17, 2004
Filed:
Feb 16, 2001
Appl. No.:
09/788194
Inventors:
Timothy J. Cunningham - Boulder CO
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH
Assignee:
Micro Motion, Inc. - Boulder CO
International Classification:
G06F 1700
US Classification:
702106, 702 45, 702 54, 702190, 73861356
Abstract:
Movement of a structure, such a conduit of a Coriolis mass flowmeter, is estimated. A plurality of motion signals representing motion of the structure are mode selective filtered to generate a plurality of mode selective filtered motion signals such that the mode selective filtered motion signals preferentially represent motion associated with a vibrational mode of the structure. A plurality of phase estimates is generated from the plurality of mode selective filtered motion signals. The plurality of phase estimates may be generated using a phase reference derived from a mode selective filtered motion signal of the plurality of mode selective filtered motion signals. According to some embodiments, a frequency of a mode selective filtered motion signal is estimated, and quadrature first and second reference signals are generated based on the estimated frequency. The plurality of phase estimates is generated from the mode selective filtered motion signals and the reference signals.
Mass Flow Measurement Methods, Apparatus, And Computer Program Products Using Mode Selective Filtering
US Patent:
6466880, Oct 15, 2002
Filed:
Feb 16, 2001
Appl. No.:
09/788189
Inventors:
Timothy J. Cunningham - Boulder CO
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH
Assignee:
Micro Motion, Inc. - Boulder CO
International Classification:
G06F 1760
US Classification:
702 50, 702 43, 702189, 702188, 702 55
Abstract:
Mass flow of a material in a conduit is estimated by mode selective filtering a plurality of motion signals representing motion of the conduit to generate a plurality of mode selective filtered motion signals such that the mode selective filtered motion signals preferentially represent motion associated with a vibrational mode of the conduit. A plurality of phase estimates is generated from the plurality of mode selective filtered motion signals. A mass flow estimate is generated from the plurality of phase estimates. The plurality of phase estimates may be estimated using a phase reference derived from one of the plurality of mode selective filtered motion signals. In some embodiments, a frequency of a mode selective filtered motion signal of the plurality of mode selective filtered motion signals is estimated. Quadrature first and second reference signals are generated based on the estimated frequency. The plurality of phase estimates is generated from the plurality of mode selective filtered motion signals and the first and second reference signals.
Mass Flowmeter Methods, Apparatus, And Computer Program Products Using Correlation-Measure-Based Status Determination
US Patent:
6535826, Mar 18, 2003
Filed:
Feb 16, 2001
Appl. No.:
09/785869
Inventors:
Timothy J. Cunningham - Boulder CO
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH
David Lee Campbell - Boulder CO
Thomas Dean Sharp - Terrace Park OH
Assignee:
Micro Motion, Inc. - Boulder CO
International Classification:
G06F 100
US Classification:
702 45, 702100, 73861352, 73861356
Abstract:
Motion signals representing motion of a conduit of a mass flowmeter are mode selective filtered to generate a plurality of mode selective filtered motion signals such that the plurality of mode selective filtered motion signals preferentially represent motion associated with a vibrational mode of the conduit. A plurality of time difference estimates is generated from the plurality of mode selective filtered motion signals. A correlation measure is generated from the plurality of time difference estimates. A status of the mass flowmeter system is determined from the generated correlation measure. In some embodiments, the correlation measure comprises an intercept parameter of a scaling function that relates the plurality of time difference estimates to a plurality of reference time differences representing motion of the conduit at a known mass flow. In other embodiments, the correlation measure comprises a correlation coefficient estimated from the plurality of time difference estimates. In still other embodiments, the correlation measure comprises an error of estimate.
High Temperature Drive System For A Coriolis Mass Flowmeter
US Patent:
5987998, Nov 23, 1999
Filed:
Aug 26, 1998
Appl. No.:
9/140098
Inventors:
David Lee Campbell - Boulder CO
John Richard McCarthy - Boulder CO
Kurtis Leroy McCormick - Lafayette CO
Daniel Patrick McNulty - Westminster CO
John Richard McCarthy - Boulder CO
Kurtis Leroy McCormick - Lafayette CO
Daniel Patrick McNulty - Westminster CO
Assignee:
Micro Motion, Inc. - Boulder CO
International Classification:
G01F 178
US Classification:
73861356
Abstract:
A drive system for use in a temperature environment. The drive system is made of materials that can withstand high temperatures without degrading. There are no plastics or epoxy adhesives used in this drive system. The drive system is also made more efficient by placing the drive system on a flow tube outside of a loop in the flow tube between the inlet and the outlet.