Organisation and memory

Data from a series of experiments are reported in support of the context hypothesis developed in this thesis: recall and recognition are affected by the context in which items are perceived and the effects on recognition are most appropriately determined through reaction time (RT) measures as opposed to accuracy measures alone. Data are also reported which demonstrate instructional effects on recognition. The major independent variables manipulated were mode of presentation (simultaneous or serial), list structure (blocked or random) and practice (one trial or three trials) In addition, both a nested hierarchy and a categorized list paradigm were used as well as a paradigm involving the use of adjective modifiers. The data reported were consistent with the context hypothesis in that, generally, RTs were faster with a serial presentation and with a random list structure, and performance improved with practice. The effect of instructions was to attenuate recall and, especially, recognition effects. Two major approaches were compared with the context hypothesis and results discussed in those terms; the effective presentation time hypothesis and the dual-process approach. Neither was as effective in explaining the obtained results as the context hypothesis. The mechanisms involved in the context hypothesis were proposed as being an encoding specificity-variability process affecting encoding and an Atkinson/Juola search and decision process affecting retrieval. Nothing in the data contraindicated these processes. The context hypothesis is falsifiable, as was demonstrated in the final experiment reported, and is in a stage of development. This thesis reports the beginning phases of this development

DEVELOPMENT OF A NONCONTACT SENSOR FOR MONITORING MILK COAGULATION AND CUTTING TIME PREDICTION IN CHEESE MAKING

Cheese products are manufactured more consistently and with better quality if the curd cutting time can be consistently selected. An optical sensor that accurately predicts cutting time has been developed for large cheese vats, but the initial cost of these sensors makes them uneconomical for small artisan cheese manufacturers. The small artisan cheese vats require an inexpensive sensor technology that can be implemented simply. The initial cost of purchasing a sensor and installing these sensors plus the need for a computational program for implementing the algorithm make this technology excessively expensive for these smaller cheese manufacturers. The objective of this research was to develop a simpler sensor technology that can be implemented inexpensively by artisan cheese makers. A prototype sensor has been developed and shown to measure the coagulation of milk in initial experiments. This sensor uses the same concepts for estimating cutting time and much of the same technology as the light backscatter technology; however, it is considerably more cost effective than a light backscatter sensor welded permanently into a vat. The results will show the unique and novel design and characterize its performance on unhomogenized milk

High accuracy fuel flowmeter. Phase 2C and 3: The mass flowrate calibration of high accuracy fuel flowmeters

A facility for the precise calibration of mass fuel flowmeters and turbine flowmeters located at AMETEK Aerospace Products Inc., Wilmington, Massachusetts is described. This facility is referred to as the Test and Calibration System (TACS). It is believed to be the most accurate test facility available for the calibration of jet engine fuel density measurement. The product of the volumetric flow rate measurement and the density measurement, results in a true mass flow rate determination. A dual-turbine flowmeter was designed during this program. The dual-turbine flowmeter was calibrated on the TACS to show the characteristics of this type of flowmeter. An angular momentum flowmeter was also calibrated on the TACS to demonstrate the accuracy of a true mass flowmeter having a 'state-of-the-art' design accuracy

Financial Aid: Just a Recruiting Tool?

Students who do not continue in classes until grades are awarded at the end of the term are of growing concern to college and university personnel. This paper reports on how a sample of non-persisting students compares with their persisting counterparts in terms of receipt of financial aid, grades awarded, etc. It appears, whether by chance or by design, that financial aids offices may have actually been doing their jobs as well as they should have been

Proton NMR studies of the electronic structure of ZrH/sub x/

The proton spin lattice relaxation times and Knight shifts were measured in f.c.c. (delta-phase) and f.c.t. (epsilon-phase) ZrH/sub x/ for 1.5 or = to x or = to 2.0. Both parameters indicate that N(E/sub F/) is very dependent upon hydrogen content with a maximum occurring at ZrH1 83. This behavior is ascribed to modifications in N(E/sub F/) through a fcc/fct distortion in ZrH/sub x/ associated with a Jahn-Teller effect

Measuring news media literacy: how knowledge and motivations combine to create news-literate teens

Funding for the research recorded in this report was provided by the Robert R. McCormick Foundation.Developing ways to improve young people's news media literacy has been the focus of much recent attention among scholars, educators, and news professionals. Common definitions and approaches, however, have been scarce, making it difficult to compare and analyze curriculum effectiveness and research results. This project sought to create a measure of news media literacy that can be used to further our understanding of what constitutes news media literacy and to help validate and improve education and training

Verifying Quantum Phase Estimation (QPE) using Prove-It

The general-purpose interactive theorem-proving assistant called Prove-It was used to verify the Quantum Phase Estimation (QPE) algorithm, specifically claims about its outcome probabilities. Prove-It is unique in its ability to express sophisticated mathematical statements, including statements about quantum circuits, integrated firmly within its formal theorem-proving framework. We demonstrate our ability to follow a textbook proof to produce a formally certified proof, highlighting useful automation features to fill in obvious steps and make formal proving nearly as straightforward as informal theorem proving. Finally, we make comparisons with formal theorem-proving in other systems where similar claims about QPE have been proven.Comment: 28 pages, 18 figures, 5 tables. Prove-It theorem-proving results available at http://pyproveit.org/ and Prove-It code available at https://github.com/PyProveIt/Prove-I