Analysis of routine communication in the air traffic control system

The present project has three related goals. The first is to describe the organization of routine controller-pilot communication. This includes identifying the basic units of communication and how they are organized into discourse, how controllers and pilots use language to achieve their goals, and what topics they discuss. The second goal is to identify the type and frequency of problems that interrupt routine information transfer and prompt pilots and controllers to focus on the communication itself. The authors analyze the costs of these problems in terms of communication efficiency, and the techniques used to resolve these problems. Third, the authors hope to identify factors associated with communication problems, such as deviations from conventional air traffic control procedures

AN EVALUATION OF TESTS OF MUSICAL TALENT

The problem consists of an evaluation of tests of musical ability to discover which tests are most reliable and useful for elementary school purposes. In a review of the literature related to the problem an attempt was made to present different viewpoints fairly, to summarize evidence of outstanding tests, to analyze contradictory evidences for possible solution of the questions involved, and to set up criteria for the selection of the best tests. For further evidence, four selected batteries of comparatively new tests were given to over one thousand children in grades two to six in the schools of Parsons, Kansas. Only a brief summary was given of the results from three of the batteries, but more space was given to summarizing some significant results from the statistical study of the other battery, namely the Kwalwasser-Dykema Music Tests. Three new approaches were used in the attempt to discover which are the most reliable tests in the Kwalwasser-Dykema battery. The first approach was an analysis of all available reliability coefficients reported by different investigators for each of the ten tests in the battery. The second approach involved assembling fourteen sets of means for different ages, grades, nationalities, and races. These averages were analyzed and compared with results from fifteen different groups of Parsons\u27 schools. The third approach was a study of the accuracy with which the raw scores made on each test of the battery and other tests or parts of tests were predictive of the total scores made on the whole battery of the KwaIwasser-Dykema Music Tests. In the third approach, the purpose was not only to discover evidences as to the reliability of the tests but also to find out which brief tests actually gave the most information about the musical ability of elementary school children. The criterion of musical ability used in this was the total scores which were assumed to be the best available index of the musical ability of an individual, or at least the most practical method of ascertaining the quarter in which an individual should be classified as to musical ability. The tests finally selected are ranked according to their probable value for use in elementary schools as follows: 1. Drake Test of Musical Memory, Forms A and B. 2. Kwalwasser-Dykema Tonal Movement. 3. Kwalwasser-Dykema Tonal Memory. 4. Seashore Pitch. 5. Seashore Tonal Memory. 6. Kwalwasser-Dykema Rhythm Imagery. 7. Kwalwasser-Dykema Pitch Imagery

Effect of compression and transmission on the illuminating and heating value of carburetted water-gas

The object of this series of tests was to determine the effect of compression upon the candle power of carburetted water gas, as made in the daily operation of a three piece water gas machine, cooled in condensers, passed through shavings, scrubbers and oxide material, and thence into a storage holder, ready for compression and distribution. The apparatus consisted of a small Westinghouse air compressor; nine storage tanks of six inch wrought iron pipe; transfer pump; pressure regulator; standard one hundred inch bar photometer, complete, with regulators, clock, meter, pentane lamp, etc., gas analysis outfit, complete; also gages, thermometers, etc. --Page 1

HENRY MOORE BATES

There are people to whom any sense of fitness would assign a long life. Henry Moore Bates is one of these. In full vigor of mind until the end and before any physical deterioration had occurred to render his days uncomfortable to himself or his family, he died April 15th, on the sixteenth day following his 80th birthday. At eight o\u27clock in the evening before he died he was in bouyant spirits, his humor was keen and kindly, as always; his laughter was young. Eight hours later the end came. He was unafraid. When it (was) time for him to take his leave, he (was) as ready to go his way as to engage in any other seemly, or self-respecting act; careful of one thing, that while life (should) last his understanding (should) never disown the relation of a being possessed of mind and social aim

The managerial problems of branch operations in the custom residential construction industry

Thesis (M.B.A.)--Boston Universit

Geology of the East Lake Creek Area, Eagle County, Colorado

The East Lake Creek area is in the northwest part of central Colorado, west of the Continental Divide. The area consists of about 40 square miles of Paleozoic sedimentary rocks which dip off the extreme north end of the Sawatch Range. The medium-grained, nearly white Upper Cambrian Sawatch quartzite is about 190 feet thick, and grades into brown, sandy dolomite of the Peerless formation which is 80 to 100 feet thick. The Lower Ordovician Manitou dolomite rests unconformably on the Peerless, and is dark gray and medium to coarsely crystalline. The Manitou is absent east of East Lake Creek, but is up to 40 feet in thickness to the west. It is separated by an angular unconformity from the Middle Ordovician Harding quartzite. The Harding is a nearly white, medium-grained orthoquartzite with some grayish yellow green sandstone lenses, and is up to 20 feet in thickness. A prominent unconformity separates the Ordovician sediments from the Upper Devonian Chaffee formation. The white, vitreous, coarse-grained Parting quartzite member is about 75 feet thick. It differs from the quartzites of the Sawatch and Harding by its coarseness and more angular grains. The upper member of the Chaffee formation is the Dyer dolomite, which is uniform, finely crystalline, light gray, and approximately 100 feet thick. The Mississippian Leadville limestone disconformably overlies the Dyer, and is a gray, lithographic limestone, varying from 70 to 120 feet in thickness. The base of the Leadville is a grayish brown, dolomitic sandstone locally called the Gilman member. The Belden formation of Early Pennsylvanian age disconformably overlies the Leadville. It is about 400 feet thick, and is composed of alternating beds of dark gray, aphanitic limestone and gray to black, fissile shale. It is highly fossiliferous, while the older sediments yielded no fossils. Its fauna includes abundant specimens belonging to the genera Amphissites, Millerella, Climacammina, Lophophyllidium, Stereostylus, Fenestrellina, Rhombopora, Chonetes, Marginifera, Dictyoclostus, Spirifer, Composita, Echinocrinus, Stylophycus, and several others which were not identified. Abundant Millerella occur in a zone 100 feet thick above the middle of the formation. The presence of the Millerella, and the absence of more advanced fusulinids has led to the conclusion that at least this part of the Belden is of Morrowan age. The Belden grades into the Minturn formation which contains about 1000 feet of gray and brown, micaceous siltstones, fine to coarse gray sandstones, and thin partings of gray shale. This lower zone is overlain by several hundred feet of gray, massive beds of gypsum and anhydrite, with thin beds of dolomite, siltstone, and shale. Two reverse faults and one anticline trend about N45E across the southern part of the area; the faults have stratigraphic throws of 1200 to 1500 feet and can be traced for about 8 miles, and the anticline can be traced for about 5 miles. The structures all appear to be the result of a local compressive force applied to the sediments during the uplift of the Sawatch Range