In this paper, I measure the impact of manufacturing extension on productivity and sales growth at manufacturing plants. To do this, I match manufacturing extension client data to the Census Bureau’s Longitudinal Research Database (LRD). The LRD contains data for all manufacturing establishments in the U.S. and provides a number of measures of plant performance and characteristics that are meas...

From the Field Services Division, Epidemiology Program Office, and the AIDS Activity, Center for Infectious Diseases, Centers for Disease Control, Atlanta, Georgia. This work was presented in part at the symposium ‘Controversies in the Management of Infectious Complications of Neoplastic Disease,” Memorial Sloan-Kettering Cancer Center, New York, New York, March 17 and 18, 1983. Requests for re...

A Shack-Hartmann aberrometer was used to assess the optical performances of eyes corrected with rigid or soft contact lenses compared with spectacles. Metrics of optical quality derived from the measured wave aberrations were consistent with the subjective rating of visual clarity by subjects. Optical aberration analysis illustrated the differences in aberration structures of eyes wearing diffe...

2 Contact manifolds 4 2.1 Contact manifolds and their submanifolds . . . . . . . . . . . . . . 6 2.2 Gray stability and the Moser trick . . . . . . . . . . . . . . . . . . 13 2.3 Contact Hamiltonians . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.4 Darboux’s theorem and neighbourhood theorems . . . . . . . . . . 17 2.4.1 Darboux’s theorem . . . . . . . . . . . . . . . . . . . . . . . 17...

OBJECTIVE To evaluate the reliability and validity of the Spanish version of the NewCastle Asthma Knowledge Questionnaire (NAKQ) for determining asthma knowledge in teachers. METHODS DESIGN AND SAMPLE A cross-sectional observational study in educational centers of A Coruña providing preschool, primary school and/or compulsory secondary education. Centers were selected by random sampling, s...