The purpose of this study is to examine a sample of former Utah apprentices who either completed or dropped out of a registered apprenticeship program during the five-year period from 1969 to 1974. Comparisons were made between the dropouts and completers in order to determine how the two groups differed and what factors influenced their decisions to complete or cancel their indentures. Significant differences were found between the two groups with respect to their opinions of the training they received as apprentices. Especially significant differences were seen between the dropouts; and completers' responses to the questions related to their on-the-job training. The study concludes with a discussion of the implications of the findings for the future course of action to be pursued by apprenticeship labor officials in the state.

In this thesis, the feasibility of complete complementary code based OFDM CDMA system is studied. The complete complementary code is composed of several sets of auto-complementary codes, any two of which are cross-complementary codes. The perfect correlation between code sets is the distinguishing feature of complete complementary code. In this thesis, we designed a new OFDM CDMA system architecture according the property of complete complementary code. The most obvious characteristic is that the bit stream in the new system is no longer aligned one bit after another in time. Instead, a new bit will start only after one chip delay relative to the previous bit, which is spread by an element code of complete complementary code. The proposed new CDMA architecture can offer an MAI-free operation in both down-link (synchronous channel) and up-link (asynchronous channel) transmission under the AWGN channel, because of the use of the CC-codes. However, due to the special spreading modulator-offset stacking modulator (OSM), we¡¦ll encounter a ¡§ multi-level ¡¨ problem . If we can¡¦t solve this problem , the linear power amplifier will not be able to support the whole system . Hence , we try to clip the multilevel into a smaller magnitude . And also , we try some other mapping methods to solve the multilevel problem .

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In 1990 James D. Lewis made a conjecture on the representability of algebraic Chow groups of projective algebraic manifolds. We prove that his conjecture holds for smooth complex complete intersections satisfying a numerical condition and consider some applications to motives. / Mathematics

Thesis (M.S.)--University of Michigan, Ann Arbor, 1975. / Typescript (photocopy). Includes bibliographical references (leaves 73-80). Also issued in print.

Thesis (M.S.)--University of Michigan, 1980.

Thesis (Ph. D.)--University of Washington, 1991. / Vita. Includes bibliographical references (leaves [160]-168).

Thesis (M.S.)--University of Michigan, Ann Arbor, 1978. / Typescript (photocopy). Includes bibliographical references (leaves 36-38). Also issued in print.

Thesis (doctoral)--Katholieke Universiteit, Nijmegen, 1992. / Vita. Includes bibliographical references (p. 229-241).