The Texas Instruments Calculator Based Laboratory used with graphics calculators, enables students to undertake mathematical modelling through problem solving using classroom generated data. The easy transfer of data to each student's calculator allows self–paced, independent work either individually or in small groups. There are opportunities for discussion between students and teacher and bet...

The voice activated calculator is a speaker-independent system that is used to perform basic mathematical operations. It recognizes the isolated spoken digits from 0 to 9, and other words like plus, minus, times, equal and clear. It then performs the respective arithmetic operations, and displays the final answer on an LCD display.

The views presented in this paper are those of the author alone, and they do not necessarily reflect the views of the Board of Governors of the Federal Reserve System or its official staff. The author wishes to thank Rochelle Antoniewicz for sharing the flow of funds calculations used in this paper, Amber Lynn Lytle for research assistance, Annamaria Lusardi, Martha Starr-McCluer and John Weich...

Given a large number of incorrect responses to mathematical exercises, we ask, “What errors might the learner have made to arrive at their answer?” Even though our data does not contain intermediate steps, we find that we are able to infer well over 50% and sometimes over 90% of the types of errors learners make on an exercise when they only supply final answers. Our approach capitalizes on the...

OBJECTIVES To evaluate English, Afrikaans, and Xhosa mother-retained 'Road-to-Health Book' (RTH book) for children, and an electronic calculator. DESIGN Researchers D Harrison (DH) and H Harker (HH) informed clinic staff about the contents and significance of the RTH book. They requested nurses to use this book in conjunction with the Road-to-Health Card and to issue and explain its use to ev...

The risk calculator of the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) has been shown to be useful in predicting postoperative complications. In this study, we aimed to evaluate the predictive value of the ACS-NSQIP calculator in geriatric patients undergoing lumbar surgery.A total of 242 geriatric patients who underwent lumbar surgery between January ...

Realistic appraisal of paleoclimatic information obtained from a particular location requires accurate knowledge of its paleolatitude defined relative to the Earth's spin-axis. This is crucial to, among others, correctly assess the amount of solar energy received at a location at the moment of sediment deposition. The paleolatitude of an arbitrary location can in principle be reconstructed from...

INTRODUCTION Accurate surgical risk prediction is paramount in clinical shared decision making. Existing risk calculators have limited value in local practice due to lack of validation, complexities and inclusion of non-routine variables. OBJECTIVE We aim to develop a simple, locally derived and validated surgical risk calculator predicting 30-day postsurgical mortality and need for intensive...

The laws of thermodynamics constrain the action of biochemical systems. However, thermodynamic data on biochemical compounds can be difficult to find and is cumbersome to perform calculations with manually. Even simple thermodynamic questions like 'how much Gibbs energy is released by ATP hydrolysis at pH 5?' are complicated excessively by the search for accurate data. To address this problem, ...

Molecular descriptors are widely employed to present molecular characteristics in cheminformatics. Various molecular-descriptor-calculation software programs have been developed. However, users of those programs must contend with several issues, including software bugs, insufficient update frequencies, and software licensing constraints. To address these issues, we propose Mordred, a developed ...