A clinical evaluation of the response in preschool children to oral hygiene education

Thesis (M.Sc.D)--Boston University School of Graduate Dentistry, 1972. (Pedodontics)Bibliography included

Design of a precise X-Y-Theta nanopositioning optical sensor

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.Cataloged from PDF version of thesis.Includes bibliographical references (p. 55-56).A position measurement system was designed to estimate the absolute and relative position of an x-y-[theta] nanopositioning stage for use in the metrology of microfluidic devices during and after manufacturing. The position sensing system consists of a visible-light high-speed area camera, a target pattern, and image processing software. The target pattern consists of a square grid with unique binary codes in each square that identify the square's global position in the grid. In macroscopic-scale testing of the position sensing system, the angular orientation of the target pattern was successfully measured with less than one degree uncertainty. However this uncertainty is several orders of magnitude larger than the target precision of the sensor, and it is still unclear whether sufficient precision is attainable with this system and software. This thesis also describes a previous attempt to perform this metrology using consumer-grade contact image sensor scanners, other elements of the current metrology system design, and the non-orthogonal viewing angle concept, which is the fundamental underpinning of the microfluidic metrology system as a whole.by Michael B. Johnson.S.B

Elliptic Curves over Real Quadratic Fields are Modular

We prove that all elliptic curves defined over real quadratic fields are modular.Comment: 38 pages. Magma scripts available as ancillary files with this arXiv versio

Ursinus College Alumni Journal, Summer 1947

Word of appreciation • Old Timers\u27 Day • President\u27s page • Alumni Association tables special committee\u27s report • Student union chosen as war memorial • Women\u27s Club • Dr. Clawson new Ursinus Dean • Board of Directors creates new committee, adds five members • Campus to be used for astronomical observation • Kuhrt Wieneke named coach of football • Three resign from faculty • Fourteen members added to faculty • Dr. Distler addresses graduating class • Sports: Men\u27s basketball; baseball; men\u27s tennis; track; women\u27s swimming; women\u27s basketball; women\u27s tennis • Local alumni associations meet • Work progressing on alumni register • Summer assembly • News about ourselves • Necrology • News around townhttps://digitalcommons.ursinus.edu/alumnijournal/1031/thumbnail.jp

Eta-Helium Quasi-Bound States

The cross section and tensor analysing power t_20 of the d\vec{d}->eta 4He reaction have been measured at six c.m. momenta, 10 < p(eta) < 90 MeV/c. The threshold value of t_20 is consistent with 1/\sqrt{2}, which follows from parity conservation and Bose symmetry. The much slower momentum variation observed for the reaction amplitude, as compared to that for the analogous pd->eta 3He case, suggests strongly the existence of a quasi-bound state in the eta-4He system and optical model fits indicate that this probably also the case for eta-3He.Comment: LaTeX, uses elsart.sty, 10 pages, 3 Postscript figures, Submitted to Physics Letters

Ursinus College Alumni Journal, Winter 1947

An auspicious beginning for a worthwhile project • President\u27s page • Committees plan new position at college • Status of the war memorial campaign • 964 students enrolled at Ursinus • Miss Moll resumes duties at Ursinus • General Arnold Founders\u27 Day speaker • Three faculty promotions, one appointment announced • New gymnasium nearing completion • Questionnaires outstanding from 900 alumni • Sports: football, soccer, hockey • The shape of things to come? • The attack on illiteracy in British Guiana • News around town • News about ourselves • Faculty members complete laboratory manual • Necrologyhttps://digitalcommons.ursinus.edu/alumnijournal/1029/thumbnail.jp

Ursinus College Alumni Journal, Summer 1946

Board of Directors encourage alumni participation • Alumni committees active • Dr. Johnson commencement speaker • President\u27s page • Directors plan for future • Alumni give $31,000 • Retirement plan • Five earn degrees • Missions secretary • Modern pioneer • Operations Africa • A Dean\u27s mailbox • That others may live • Dr. Miller retires • Seminary gets new head • Faculty and staff additions • Penfield winner • Dr. Garrett studies in France • News about ourselves • Commencement prizes • Challenge of Picalqui • Highlights in fall sports • Local Alumni Association meetings • News around town • Necrology • Summer conferences • College solves housing problem • Fall enrollment 700 • Alumni Association officershttps://digitalcommons.ursinus.edu/alumnijournal/1028/thumbnail.jp

Ursinus College Alumni Journal, Spring 1947

It\u27s time to vote • President\u27s page • News from the campus: Club meetings; Debating; Forum Committee; Curtain Club; YM and YW; Men\u27s sports; Women\u27s sports; New coach appointed; May Day; Alumni Day • Christian education in China • Around town • Ursinus professor honored • Tribute to Dean Kline • News about ourselves • Function of an alumni association • Reunion abroad • Necrology • War Memorial Committee requests expression of opinion from alumni • Alumni Association nomineeshttps://digitalcommons.ursinus.edu/alumnijournal/1030/thumbnail.jp