International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / Using acquisition networks requires an understanding of the capabilities, design constraints and limitations of each available network device. The proper use of bridges, routers and gateways become extremely important in large networks where dissimilar busses, protocols or applications may be found. As data acquisition networks become a reality, the instrumentation network engineer must understand the benefits of each of these network devices and when to use them.

International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The objective of any data acquisition system is to make accurate measurements of physical phenomena. Many of the phenomena to be characterized contain data that is in the audio-frequency range between 0 and 50,000 Hertz. Examples include structural vibration, wind-tunnel measurements, turbine engines and acoustics in air and water. These tests often require a large number of channels and may be very expensive. In some cases, there may be only one opportunity to acquire the data. This paper describes a testing/measurement philosophy and the use of advances in available hardware/software systems to implement the requirements. Primary emphasis is on robustness (assurance that critical data is properly recorded), measurement/characterization of unexpected results (generated by accidents or unexpected behavior), and test safety (for both the test article and the facility). Finally, a data acquisition system that encompasses the features discussed is described.

International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California / On reviewing current PCM on-board data acquisition systems design is not very uncommon to find lots of useful signals being generated together with the PCM stream, such as bit clocks, word clocks, minor and major frame pulses. The purpose of this paper is to demonstrate a conceptual design of a digital recording device that takes advantage of these signals to collect data directly into a computer compatible disk file. Such device can eliminate the need of further PCM signal processing after the test and speed up the conversion process of pure digital sampling values into floating point numbers.

This study compares the performance of unilingual normal, unilingual learning-disabled, bilingual normal, and bilingual learning-disabled groups of children from 8 to 11 years of age on acquisition of word meaning tasks. The tasks were derived from the Re-cognition Function Level of Kass's theory. Initial subject selection involved using teacher judgments and an examination of school files to determine the presence of learning disability. Bilingual linguistic background was determined by teacher and parental judgments and by ability in verbal conversation to achieve a criterion of approximate equivalence between English and Spanish. Four groups of at least 15 subjects each were established, reflecting linguistic background (unilingual, bilingual) and presence of learning disability (learning-disabled, normal). Final assignment of subjects to learning-disabled and normal groups was verified by the administration of four tests and a discriminant analysis of the results. Five experimental tasks involving the acquisition of word meaning were devised and administered to the subjects. These tasks were: Task 1, Word Classification; Task 2, Word Class Labeling; Task 3, Verbal Analogies; Task 4, Synonyms and Antonyms; and Task 5, Creative Language. Task 5, Creative Language, consisted of Parts A (written) and Part B (verbal). An Abstract-Concrete Scale score and a Words per Sentence score resulted from both Part A and Part B. The results of the study were as follows: (1) Learning-disabled subjects, regardless of linguistic grouping, scored significantly lower than normal subjects on the Word Classification, Word Class Labeling, Verbal Analogies, and Synonyms and Antonyms tasks. They also scored significantly lower than normal subjects on the Creative Language Task Part A (written) and Part B (verbal), Abstract-Concrete Scale. No difference was present on the Creative Language Task, Part A (written) and Part B (verbal), Words per Sentence. (2) Bilingual subjects, regardless of the presence of learning disability, scored significantly lower than unilingual subjects on the Word Class Labeling and Verbal Analogies tasks. They scored significantly higher than unilingual subjects on the Creative Language Task, Part A (written), Words per Sentence. (3) Younger subjects scored significantly lower than older subjects on the Word Classification and Verbal Analogies tasks and on the Creative Language Task, Part A (written) and Part B (verbal), Abstract-Concrete Scale. (4) No significant interaction effect (presence of learning disability x linguistic background) was obtained on any of the tasks. The results of this study support these conclusions. First, children labeled as learning disabled have skill deficits in acquiring word meaning, with the qualification that measures of the quantity of language production do not consistently correspond to measures of the quality of language production. Second, bilingual children may appear to display deficits in the acquisition of word meaning if task selection in the secondary language (English) does not take practice factors into account. However, bilingual learning-disabled children display these deficits in both primary and secondary languages. Third, skill in the acquisition of word meaning improves across the age span of 8 to 11 years regardless of the presence of learning disability.

ITC/USA 2011 Conference Proceedings / The Forty-Seventh Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2011 / Bally's Las Vegas, Las Vegas, Nevada / The F-22 Quick Response Package was designed to efficiently solve aircraft anomalies in the field. Providing this capability would enhance aircraft combat availability and lower maintenance costs. Using the current F-22 instrumentation flight test system design package as a baseline, a smaller, and much more versatile, version of the system was designed. This new design concept includes a data acquisition and recording system on a single pallet called the Quick Response Package (QRP). The QRP can be installed in any operational F-22 war fighter in a single production shift with no intrusion to the aircraft's systems readiness. The data acquisition and recording capabilities provide a near real-time field solution without excessive downtime or pilot intervention. This paper describes the design requirements, the design concept and packaging details of the QRP.

published_or_final_version / abstract / toc / Educational Psychology / Master / Master of Social Sciences

published_or_final_version / abstract / toc / Educational Psychology / Master / Master of Social Sciences

published_or_final_version / Chinese Language and Literature / Master / Master of Arts

published_or_final_version / Linguistics / Master / Master of Arts

published_or_final_version / abstract / Educational Psychology / Master / Master of Social Sciences