Information Technology

Most Recent Inventions

Physics ‘Office Hours’ educational learning platform

A physics education researcher at the University of Wisconsin-Green Bay has designed a novel and interactive app-based study aid platform for students in STEM disciplines. The platform’s interface is built around education research into how students conceptualize problems they do not understand. It is a novel tool to help students see why they are struggling with a particular problem, and what might help them solve it, rather than solving the problem for them. The team’s first working prototype, the Physics Office Hours app, has been designed for use in introductory-level college physics. The app is designed to mimic a scenario students might face during ‘office hours’ with a professor: Rather than offering an answer, the instructor guides the students through problems via a series of questions. A user-friendly online interface allows app content to be easily updated and changed over time and as more problem sets become available. In addition, the app architecture can easily be adapted to problem sets in other STEM disciplines and therefore serves as a platform technology.

Imaging Technique for Recognizing Hand Gestures & Other Micromotions in 3-D

UW–Madison researchers have developed a new imaging technique that analyzes speckle patterns to track extremely small 3-D motions on the order of 10-100 microns. This technique enables, for the first time, precise 3-D measurement of multiple moving objects using low-cost, off-the-shelf components.

Virtual Touch Screens: New Input for Smaller Devices

UW–Madison researchers have developed a new virtual touch screen technology utilizing unused space to the side of a device display. The technology is a low-cost passive finger localization system based on visible light sensing. It provides a simple and convenient interface that does not require additional external equipment such as a sensor attached to the finger.

A sensor system on the edge of a mobile device uses photodetectors and a light source to track finger motion based on reflected light signals within the narrow light-sensing plane of the virtual touch screen. The signals are converted to orthogonal coordinates and subsequently output to the graphics display screen.

Optimized Nanoresonator Design Signals Breakthroughs in Spectrometry and Device Efficiency

UW–Madison researchers have developed a new method and structure for increasing the cross section of nanoresonators, thereby improving the concentration ratio of light (or other electromagnetic radiation) and device performance. The key to their approach is that the nanoresonator is surrounded by a material that provides increased light concentration.

New Software Algorithm Advances Measurement Technology in Agribusiness

UW–Madison researchers have developed a new scanning algorithm for use in assessing yield and quality of crop production.

To determine characteristics such as kernel loading on an ear of corn and ear size, researchers scan up to three ears at a time using a common flatbed scanner. To measure 100 kernel weight, another common yield measurement, researchers weigh a handful of individual kernels and scatter them on the scanner. The resulting images are then analyzed using the algorithm to quickly provide yield data.

The algorithm uses a thresholding technique to separate the ears from the background and a Fourier transform to more accurately estimate kernel length. It also corrects for individual kernels clustering together.

Most Recent Patents

Tailored Radiopharmaceutical Dosimetry for 4-D Treatment Planning System

UW-Madison researchers have developed a system for precisely tailoring the quantity and timing of the administration of a radiopharmaceutical to a particular patient. To generate time-activity curves, an imaging radioisotope is first administered and the subject is scanned using dynamic PET/CT imaging. From the acquired datasets, the critical organ, which displays toxicity at the lowest injection level, is determined. A fractionation scheme is then developed for tumor control and toxicity avoidance, and precise, patient-specific administration schedules are created based on the effect that varying dose rates have on the critical organs and tumors. This two-step technique can provide sufficient precision to allow the combination of radiopharmaceutical treatment with other radiation treatment such as external-beam radiotherapy.

Improving Memory Access in Asymmetric Memories

UW–Madison researchers have developed a shared row buffer system for asymmetric memory. The system better accommodates changing patterns of data by sharing row buffers between fast and slow memory banks.

In general, the row buffers provide a vehicle for swapping data. They can be loaded from one memory bank and then reassigned to the other memory bank. The system provides a lightweight method of moving data between memory banks without incapacitating the memory channel or involving the processor.

Tactile Button Panel for Use with Touch Screens

UW–Madison researchers have developed a touch screen system that attaches a simple button fixture over a portion of the screen. This is important because virtual ‘buttons’ may be difficult to see or manipulate.

The buttons have clear markings that can be felt by a user. When pressed, the buttons contact the touch screen and the task is performed as usual. The button panel may be mounted permanently or fastened.