Charles Cook, Ph.D.

Great Vocab is a novel online vocabulary training program which utilizes some of my work in data analysis and control theory applied to the learning of vocabulary with the help of a custom enterprise-scale web application framework. The application is capable of finding published in-use examples of any word in the English dictionary on demand.

I designed and developed a CMS that was successfully deployed in hundreds of commercial web applications and was one of the first to allow in-place editing, content versioning, full-text search, and dynamic menu building in 2008.

I designed and developed a service which exposed a Twitter 1.1 API providing automatic, expiring, and rate limit observing caching of calls to Twitter. The cache was implemented through a custom cache paradigm I designed that allowed for bursting. The cache data store was asynchronous, dependency injected, and demonstrated in SQL CE and NoSQL databases, both with auto migrations for self-hosted deployment.

I designed and developed a search system which has a plugin interface to allow any other content provider to populate the search system. The search system provides full-text catalog searching over any content source with a management system for custom weighting of content and associated keywords with their weighting (to control the position of content in results). The system also has reporting for metrics such as searched expressions, view to click ratios, view and click counts, searches that had no results, popular searches, and overall activity reports.

I developed an application which allows users to submit images and videos through a Facebook application that is then reviewed by a moderator before being posted to a Facebook gallery. The application supports a basic voting system and categorization.

I designed and prototyped a large-scale web application tiered vertically and distributed horizontally using WCF with load balancing. An early version of the application was published as the Unifico Framework in 2008.

Dynamic registration system for organizers in the equestrian community with adaptive payments.

Inventors at NASA's Kennedy Space Center have developed a magnetically retained fast-response pressure relief valve that is designed to fully open at precise cracking pressures and that operates in a fully open/fully closed manner.

US9845898

Utilizes heat from existing exhaust to recover cryogenically stored renewable energy, more than doubling fossil fuel efficiency.

US10480353

A CRM SaaS application for the mortgage industry. I received a Certificate of Excellence from UCG and Vantage for my work on the project, where I was a full-stack developer.

A new computational approach for the general numerical simulation of compressible natural convection flows with real fluid properties.

Based upon academic literature, developed numerical methods and engineered a solution to perform real time non-linear Newton-Raphson to six coupled equations in vanilla JavaScript, with singular value decomposition (SVD).

Single-handedly replaced a sprawling, multi-developer AWS environment with a single EC2 instance running a custom, ultra-low-latency database engine in C++ that ingested and analyzed full real-time social media feeds for financial markets. Leveraging deep OS-level integration, XFS-based file alignment, a bespoke vectorized data pipeline, and a buffered asynchronous REST JSON API, I sustained wire-speed throughput limited only by NVMe performance. The design scaled linearly across 120 CPU cores while maintaining near O(n) efficiency for filtering, bucketing, and aggregating massive time-series data with millisecond response times. The system processed the entire Twitter firehose in real time and supported interactive visualizations spanning decades of data, featuring a self-healing pipeline that automatically detected and patched data gaps. To achieve precise filtering, I integrated dynamic, timezone-aware market calendars. Overall, this approach delivered superior concurrency compared to typical cloud-based architectures, eliminated extensive legacy infrastructure, and reduced operational costs by an order of magnitude.

Designed and developed a custom JavaScript dashboard showing interactive live minutely market data over the span of a decade with sub-second load times, where all data is computed on demand using event-driven data.

Developed and supported the various web applications and APIs used to run a phone based adviser company, including payment processing, event/notification subscription and distribution, web applications with live agent statuses, internal administrative dashboard, custom content management system (CMS), funds and minute balance accounting for customers with O(1) calculation time, REST APIs for the cloud based phone system, with all services being load balanced with health monitoring (AWS) for zero down time of REST APIs.

Inventor: Various examples are provided for cryogenic power extraction. In one example, among others, a system for cryogenic power extraction includes a heat exchanger that can heat a cryogenic working fluid using exhaust heat from a heat source, and a turbine that can generate power from the heated cryogenic working fluid. In another example, a method includes heating a cryogenic working fluid with waste heat from a heat source and driving a turbine with the heated cryogenic working fluid. Power produced by the turbine can be used drive a mechanical load and/or generate electricity for use by an electrical load. For example, waste heat from a combustion engine of a vehicle can be used to generate power for driving mechanical loads of the engine and/or to generate electricity for charging a battery of the vehicle.