Laurence G. Kahn

Vice-President, Development

EDUCATION: MS Computer Science, 1988

Boston University, Boston, MA

BS Computer Science, 1984

University of Michigan, Ann Arbor, MI

Languages: C, C++, Ada, Visual C++, LISP, Pascal, SQL, FORTRAN, JavaScript,

HTML, XML, DAX, ASP, Java Applets

Operating Systems: Windows 7,8, Windows Server all versions,

Sun Solaris, VAX/VMS, Unix, MS-DOS, Rational, IBM/CMS, IBM/TSO

Other Experience: COM, DCOM, Oracle, SQL-SERVER, ODBC, SQL Server,

Oracle,

TCP/IP,WIN32, IIS, BI

CURRENT SECURITY CLEARANCE: Secret - Deactivated

EXPERIENCE:

iCentrix Corp - Sep 1999 - Present

Lead developer for behavioral health applications. Responsible for the

design and implementation of the data extraction from CMHC, echo and other

systems for client, staff and event/transaction, hierarchy and cost data.

Implemented a HTML, graph and Excel spreadsheet reporting system with role

based security and multi-level

drill down through the Reporting Unit hierarchy structure. The systems

include a customized, data manipulation rules capability and a web based

administration system to tailor the system to each individual agency's data

requirements. Currently fielded sites include; Community Council of

Nashua, Gateway Health Care Inc., The Howard Center for Human Services,

Riverbend Community Mental Health Inc., West Central Services, The Kent

Center and Community Partners.

Designed and implemented online form systems for both a Detox Center, and

an inpatient Foster Care Center. The system uses an IIS ASP front end, IBM

Forms and integrates into a SQL Server backend. The Detox system

automatically generates complicated drug trial forms as a result of

submitting various order forms. The Foster Care System utilizes

complicated requirements checking with alerts based on various business

rules. Multiple reports are also part of the systems. There are thousands

of lines of SQL Server stored procedures as part of this system,

Implemented various dashboards/Cubes utilizing SQL Server and Microsoft

analysis Services both Tabular (DAX) and Multi-Dimensional Models. The

dashboard integrate with various databases such as Anasazi, Psych. Consult,

ADP and Microsoft Excel Spreadsheets. The dashboards display indicators for

Services, Enrollment, Bed Days, Billing and Payroll etc.

Designed and implemented a customizable recursive publishing system that

walks through an entire site and allows publishing of a dynamic web site to

a static version of the site. This system replaces all dynamic links in

the output HTML pages with their corresponding static replacements. This

allows iCentrix to publish static versions of our dynamically generated web

sites for improved performance, or retain dynamic portions of the site for

forms submittal or other pages that need database interactions.

Designed an implemented a system to process and load daily newsfeeds from

NewsEdge Corporation. Implemented the XSL translation files to process XML

news and hierarchy files into SQL statement files that are loaded into a

SQL server database. Multiple times a day the system processes downloaded

XML news hierarchy files and maps the categories of the articles based

those inherent in the XML files to those of the web site and deletes the

articles that are not applicable to the customer.

Responsible for overseeing the ongoing development and enhancement of

object-oriented web components. This includes the data presentation

component (catalog), the shopping cart component, the interactive survey

and customer registration component, the payment management (Credit card

authorization/settlement) component, and an event logging and service

component.

Enhanced the the Payment Manager, application a web based interface to an

automatic credit card settlement component which interfaces with multiple

3rd party credit card settlement API's such as CyberCash, CyberSource,

ClearCommerce, CardServices and Verisign/Verifone

Crimson, to allow for partial settlements where only a portion of an

authorized transaction can be settled. In addition, implemented new API's

to allow re-authorizations/follow-on authorizations to handle expired

authorizations as needed for new Group-Buy functionality for a customer.

Also implented an Auto-Settle application in C++ which interfaces with the

payment manager API and automatically batches and submits/settles any

marked orders nightly and also processes any pending returns/reversals. In

this way the customer does not have to mark and settle orders manually in

the payment manager web interface if auto-settle is enabled.

Designed and implemented a portable SQL Server stored procedure and C++

data transfer/interface and reporting mechanism with Great Plains. This

allows data transfer of all products, orders, returns, credit card

settlements, and inventory between iCentrix's Web components and the Great

Plains financial system.

Trained two junior developers in the implementation and usage of iCentrix's

web based components. This includes installation of SQL server, Windows

NT, IIS, and installation, configuration and ongoing maintenance of our web

components.

Responsible for setting up and maintaining our corporation network

infrastructure including firewall and router configuration. Also

implemented automated backup procedures utilizing a DLT autoloader and

Veritas Backup Exec for Windows NT with a SQL Server backup agent.

Primary developer for the Windows NT freeware version of BIND (Berkeley

Internet Naming Daemon). The Windows NT port of BIND is multi-threaded, and

includes an InstallShield installer/configurator, and a control panel

applet. There is also a WIN95/WIN98 version available that utilizes mail-

slots instead of NT service API's for server control. This program is

my most downloaded piece of software and frequently was the top download on

www.bhs.com. In addition, on a consulting basis I modified the source to

make a custom version of BIND in use at MSN in order to circumvent a WIN95

resolver bug. I have also developed a callable .DLL library version of

BIND for another company on a consulting contract.

Wrote portions of the Listserver component, (including adding digest

support), for Imail. Imail is a commercial product current available from

Ipswitch Computers (www.ipswitch.com).

Implemented a point of sale inventory control DBMS system utilizing Oracle,

SQLForms and C reports for a furniture and carpet store.

Empresa Inc. - Nov. 1998 - Aug 1999

Designed and developed the Payment Manager/(Virtual Cash Register - VCR).

The VCR is a portable implementation of a credit-card payment processing

mechanism that interfaces to various back-end processors including

CyberCash, CyberSource, ClearCommerce, CardServices and Verifone Crimson.

A single installation of the VCR can host various merchants utilizing any

of the differing payment processors. The VCR incorporates a relational

Database (Oracle and SQL Server), a portable C/C++ API implementation,

Secure Socket Layer (SSL) communication, server/client certificates for

security, and an object oriented web based user interface. Functions

performed by the VCR include credit card authorization, offline payments,

batch settlement of credit card Authorizations, both direct and standalone

returns, and various web based reports.

Also incorporated a version of the blowfish encryption API on windows NT

into our payment and shopping cart components to provide secure data

encryption capabilities for credit card and other sensitive information.

Designed and Implemented dynamic, highly configurable and complex web sites

utilizing object oriented technology (VisualMagic). Primarily responsible

for the shopping cart portion of the web stores including the calculation

of tax and various shipping methods, and integration to the VCR for credit

card authorizations. Web sites were developed for the Office Furniture

Super Store (OFSS), KaboomBooks, and MuseumShop. The web stores were

developed using VisualMagic, SQL Server and targeted Windows NT 4.0 and

IIS.

Dynamics Research Corporation (DRC) - 1985 - Nov. 1998

Development and ongoing support of an object oriented software

development/maintenance environment - VisualMagic, utilizing an object

oriented methodology and Microsoft Visual C++.

Wrote the Internet Information Server (IIS) subsystem for VisualMagic. This

included writing support for generating a .DLL version of VisualMagic

applications that are multi-threaded/thread safe, re-entrant and run in a

IIS/ISA environment.

Developed portions of the WIN32 GUI interface module for VisualMagic. Also

developed an object oriented COM (Common Object Model) interface, and an

install program for VisualMagic utilizing InstallShield for Windows NT and

Win95.

Performed the initial port of VisualMagic from Sun Solaris to the WIN32

API.

Developed AdaPath, an Ada path coverage analysis tool to assists

developers/testers in generating the minimal paths necessary to fully test

an Ada module. Utilized Diana/Compiler technology to modify and instrument

source code to collect test coverage metrics.

Developed an Ada tool to analyze Naval Underwater Systems Center (NUSC),

BSY2 SSN21 Seawolf Combat Control software. The system utilizes compiler

front-end technology (a Diana attribute grammar) and will analyze BSY2 Ada

code to report on the completeness of the message processing components.

Digned and Implemented software to collect software metric information

based on DIANA for a future release of AdaMAT/D. The system was

implemented in Ada on the Rational R1000 and utilized the Rational Language

Reference Manual (LRM) interface.

Developed an Ada version of the Quarterdeck Desqview Application Program

Interface (API) library. The system allows Ada programs written on a

Personal Computer to take advantage of the Desqview 386 multi-user

windowing environment.

Responsible for the redesign and development of the AdaMAT Metrics Display

Tool (MDT), a PC-based graphics and analysis tool, written in Ada and C.

Implemented expanded memory manager access routines, in order to interface

the Ada and C components, and allow the system to fit on a 640K personal

computer.

As a Senior Software Engineer, led the design, development and

implementation of the Data Management Information System (DMIS) for the

Naval Underwater Systems Center (NUSC). This distributed metrics data

collection and storage system is written in Oracle, C, and SQL to run on a

Vax under VMS and PC's under both MS/DOS and UNIX. The system comprises

over 90 relations, 30 reports and graphs. Responsibilities included meeting

with the customer to define the system requirements, design and development

of the system, and overseeing the work of four other developers.

Lead developer for the Automated Assistant for the Specification of Quality

of Software (ASQS). ASQS is an object-oriented, rule-based expert system

implemented on a Xerox 1186 Artificial Intelligence workstation, which

automates algorithms and guidelines for the specification and evaluation of

software quality requirements. Responsibilities included the development

of the initial research proposal, design and development of the system

including the graphical user interface, development of a complete DOD-STD-

2167 documentation set, and technical as well as marketing presentations.

Developed a prototype database system to provide on-line access of Ada

guidelines through a natural language interface to software development

engineers and managers, sponsored under DRC Internal R&D.

Supported the on-going development of automated methods of data collection

for AdaMAT, specifically in the areas of implementing patterns for

collection using AdaMAT's internal pattern matching language, design and

implementation of the user interface, and performance improvements.

Ported a version of Apache to windows NT, including Secure Socket Layer SSL

enhancements which allows us to generate our own SSL web server

certificates for testing purposes.

Various Consulting Projects - 1995 - 1999 Developed many Windows NT

freeware programs including a version of WS_FTP32, BIND, WinWhois,

Keepalive, Kill, Startras, LKBackup etc. My Windows NT port of WS_FTP32 is

currently licensed and in use as the ftp client in Intergraph's DiskShare.

GTE Corporation, 1984-1985

Designed and developed a database for collecting and processing Ada

software metrics information as part of WIS. The system was implemented in

Oracle, and stores information on cost estimation, process, and quality

metrics. The system allows the tracking of metrics data throughout the life

cycle of the WIS project and also performs intermetric correlations.Served

as a member of the metrics team and the Special Interest Group on software

metrics. Also served as the group specialist on cost estimation and

reliability models.

Served as a member of a team that implemented a Split Screen device driver

for UNIX (UTS). The new device driver allows users to have multiple logical

screens on one physical terminal and also provides basic windowing

capabilities.

PUBLICATIONS:

Kahn, Larry, "TEST DRIVE - Diskeeper For Windows NT", Windows NT Magazine,

Duke Communications Intl, April 1996.

Kahn, L., and Keller, S., "The Assistant for Specifying the Quality of

Software (ASQS)", Final Technical Report, RADC-TR-90-195, September 1990.

Keller, S., Kahn, L., Panara, R., "Specifying Software Quality Requirements

with Metrics", Systems and Software Requirements Engineering, IEEE Computer

Science Press, 1990, (ISBN NUMBER 0-8186-8921-8).

Keller S., Kahn L., "An Expert System for Specification of Quality

Software", Proceedings of the First Annual Software Quality Workshop,

Rochester, N.Y., August 1989.

Kahn, L., "Assistant for Specifying the Quality of Software (ASQS)",

Proceedings of the Post Deployment Software Support Symposium, Software

Engineering Institute (Carnegie Mellon University), October 1987.

Kahn, L., "Software Quality Attributes Guidebook Validation", Proceedings

of the Ninth Minnowbrook Workshop on Software Performance Evaluation,

August 1986

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