5,481 research outputs found
Optimization of Dielectric Excitation for Metal Oxide Sensors: Simulation and Experimental Results
No full textThis study assesses the agreement in terms of linearity errors between simulated and experimental data from MOX sensors operated in dielectric excitation mode. Both simulated and experimental reactance spectra exhibit high linearity with respect to gas concentration in the high-frequency shoulder of the relaxation peak. The results demonstrate strong agreement between simulated and experimental 95% CI of absolute linearity errors as a function of frequency. As expected, the empirical errors are slightly bigger compared to the simulation prediction, since the latter only considers the linearity errors. The good correspondence between simulations and empirical results supports the use of simulation to optimize the tuning capacitor and the selection of the optimal operating frequency
Dr. Kevin Cruz - Faculty Author Interview
No full textDr. Kevin Cruz, Assistant Professor of Management in the Robins School of Business, discusses his recent article, “Perceptions of psychological contract breach and perceptions of co-worker exclusion: The moderating effects of collectivism and individualism,” in Occupational Health Science. Dr. Cruz’s research interests focus on employee – employer relationships, employee – team relationships and employee – co-worker relationships
Santa Cruz Active Management Area 1997-2001 hydrologic monitoring report
No full textabstract: The purpose of this report is to present the data gathered to date in the Santa Cruz AMA in support of the management goal and groundwater modeling effort. This report presents groundwater and surface water monitoring data, USGS stream gaging data, effluent data, gravity studies, historical water use and water quality data for three distinctive stream reaches of the Santa Cruz River.Includes bibliographical references (p. 40-41)
Mongolian Stress, Licensing, and Factorial Typology
No full textThis paper examines the analysis and typology of prominence-based stress systems, which do not call on binary rhythms but depend solely on factors such as syllable weight or sonority, peripherality, and nonfinality in locating stress (Prince 1983, 1990; Prince & Smolensky 1993). Four prominence-driven constraints are defined which position stress independent of foot structure. Pursuing the optimality-theoretic hypothesis that typology derives from factorial constraint ranking, it is established that reranking accurately captures attested variation, and further, that the range of prominence-driven patterns is richer than previous conceptions, including variation in nonfinality effects. Two important empirical and theoretical findings are presented. First, new data from East Mongolian dialects are introduced, correcting a misinterpretation of the Khalkha stress pattern and illuminating the analysis with a case uniquely employing all four prominence-driven constraints. Second, opposite-edge default is argued to be a categorical licensing effect, informed by the typological result that nonfinality only fails to cooccur with opposite-side systems when the default is to the right. This finds new evidence for Zoll's (1996) licensing account of conflicting directionality and offers an argument against alternative foot-based analyses.The definitive version of this paper was published in Phonology at Santa Cruz and is available at http://linguistics.ucsc.edu/research/publications/pasc/index.htmlWalker, R. (1995). Mongolian stress, licensing, and factorial typology. Phonology at Santa Cruz, 4, 85-102
Groundwater flow model of the Santa Cruz Active Management Area along the effluent-dominated Santa Cruz River, Santa Cruz and Pima Counties, Arizona
No full textabstract: The model was developed as a tool to better understand the complex and interdependent stream-aquifer system, and to provide guidance for the management of regional water resources. Water management topics relevant to the Santa Cruz AMA include bi-national water issues and the reliability of water supplies. This model was primarily calibrated over the recent effluent-dominated groundwater flow regime (1997-2002) because of the availability of high quality head, flow and pumping data. Thus, some model boundary conditions calibrated over recent periods may not necessarily be representative of pre-effluent conditions.Modeling report ; no. 14.Includes bibliographical references (p. 86-95)
Combination vaccines: development, clinical research and approval
No full textResenha do livro: Author: Ronald W Ellis. Publisher: The Humana Press Totowa, New Jersey 07512, USA, 1999, 279 pp. ISBN: 0-896-03717-7Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Imunologia. Rio de Janeiro, RJ, Brasil
A produção científica publicada pelo Instituto Oswaldo Cruz no período 1900 a 1917: um estudo exploratório Instituto Oswaldo Cruz scientific publication from 1900 to 1917, an exploratory study
No full textO presente trabalho é um estudo exploratório sobre a produção científica publicada pelo Instituto Oswaldo Cruz (IOC) no período 1900-17. Busca-se caracterizar a produção inicial do instituto e o desempenho de seus cientistas no aspecto informacional. Para caracterizar essa produção são utilizados dados de publicação e emprega-se a análise de citação como indicativo de uso. Por meio da comparação entre os dados de publicação e os de citação, avalia-se, ainda que parcialmente, o comportamento dos cientistas do IOC na qualidade de produtores e usuários da informação. Forma-se, então, um quadro geral das áreas de atuação e de interesse dos cientistas do instituto, no período 1900-17, caracterizando assim parte de seu comportamento informacional.The present article is an exploratory study on the scientific material published by Instituto Oswaldo Cruz (IOC) from 1900 to 1917. It aims at characterizing the initial production of the institute and its scientists' concern with information. In order to characterize such production, publication data and citation analysis have been used. Through a comparative analysis of publication data and their citations by other scientists, the author evaluates part of IOC scientists' behavior towards the quality of products and as information users. The present study builds up a general view of those scientists' areas of activities and interests in the period 1900-1917 and characterizes part of their role as information producers and users
Plan de la Rade et Ville de la Vera-Cruz
No full textRepresenta la Villa de la Vera-Cruz y las Islas del Golfo.</p
A Call to Service Learning: Towards a Civic Artistry of Imagination, Creation, and Community Ways of Knowing
No full textNadinne Cruz, Speaker, Author, and Independent Consultan
Various Wavefront Sensing and Control Developments on the Santa Cruz Extreme AO Laboratory (SEAL) Testbed
No full textGround-based high contrast imaging (HCI) and extreme adaptive optics (AO) technologies have advanced to the point of enabling direct detections of gas-giant exoplanets orbiting beyond the snow lines around nearby young star systems. However, leftover wavefront errors using current HCI and AO technologies, realized as “speckles” in the coronagraphic science image, still limit HCI instrument sensitivities to detecting and characterizing lowermass, closer-in, and/or older/colder exoplanetary systems. Improving the performance of AO wavefront sensors (WFSs) and control techniques is critical to improving such HCI instrument sensitivity. Here we present three different ongoing wavefront sensing and control project developments on the Santa cruz Extreme AO Laboratory (SEAL) testbed: (1) “multi-WFS single congugate AO (SCAO)” using the Fast Atmospheric Self-coherent camera (SCC) Technique (FAST) and a Shack Hartmann WFS, (2) pupil chopping for focal plane wavefront sensing, first with an external amplitude modulator and then with the DM as a phase-only modulator, and (3) a laboratory demonstration of enhanced linearity with the non-modulated bright Pyramid WFS (PWFS) compared to the regular PWFS. All three topics share a common theme of multi-WFS SCAO and/or second stage AO, presenting opportunities and applications to further investigate these techniques in the future.We gratefully acknowledge research support of the University of California Observatories and UCSC’s Lamat NSF REU program for funding this research. This work also benefited from the 2022 Exoplanet Summer Program in the Other Worlds Laboratory (OWL) at the University of California, Santa Cruz, a program funded by the Heising-Simons Foundation. Author B. Gerard thanks the 2018 SCExAO team for hosting discussions that led to the pupil chopping concept and the UCSC LAO group, particularly Dominic Sanchez, for discussions that led to the DM-based pupil chopping idea
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