Browning as a religious teacher

Thesis (M.A.)--Boston Universit

Ensemble based quantum metrology

The field of quantum metrology promises measurement devices that are fundamentally superior to conventional technologies. Specifically, when quantum entanglement is harnessed the precision achieved is supposed to scale more favourably with the resources employed, such as system size and the time required. Here we consider measurement of magnetic field strength using an ensemble of spins, and we identify a third essential resource: the initial system polarisation, i.e. the low entropy of the original state. We find that performance depends crucially on the form of decoherence present; for a plausible dephasing model, we describe a quantum strategy which can indeed beat the standard quantum limit

Quantum metrology with molecular ensembles

This work was supported by the EPSRC through QIP IRC (Grants No. GR/S82176/01 and No. GR/S15808/01), the National Research Foundation and Ministry of Education, Singapore, the DAAD, and the Royal Society.The field of quantum metrology promisesmeasurement devices that are fundamentally superior to conventional technologies. Specifically, when quantum entanglement is harnessed, the precision achieved is supposed to scale more favorably with the resources employed, such as system size and time required. Here, we consider measurement of magnetic-field strength using an ensemble of spin-active molecules. We identify a third essential resource: the change in ensemble polarization (entropy increase) during the metrology experiment. We find that performance depends crucially on the form of decoherence present; for a plausible dephasing model, we describe a quantum strategy, which can indeed beat the standard strategy.Publisher PDFPeer reviewe

Panel Discussion: Ethical Issues for Applications of Lucid Dreaming

A panel discussion featuring Joseph Dane, University of Virginia; P. Eric Craig, Center for Existential Studies and Human Services; Morton Schatzman, St. Thomas’ Hospital, London

Executive Summary

A National Science Foundation funded conference entitled, “Science, Technology, Engineering and Math – Alternative Certification for Teachers” (STEM-ACT) was held in May, 2006 in Arlington, VA. The conference was designed to facilitate a significant exchange of information, which was then synthesized to produce white papers on the three threads of the conference, i.e., policy, practice, and research. This summary presents the highlights of the three white papers

Grant Proposal for STEM ACT Conference

The STEM Education Institute and the School of Education at the University of Massachusetts Amherst propose to hold a conference entitled Science, Technology, Engineering and Math - Alternative Certification for Teachers (STEM-ACT) in November 2005 in the Washington D.C. area. The conference will focus on alternative certification programs for the preparation of science teachers. The overall purpose of the conference is to identify key features and issues relating to the alternative certification of science teachers as a basis for developing a more systematic approach to the study of these efforts. In particular, the conference asks, What do we know and what more do we need to know to incorporate the results of more than 30 years of research on science teaching and learning into alternative certification programs

Wee Wee Marie : Will You Do Zis For Me

https://digitalcommons.library.umaine.edu/mmb-vp/2644/thumbnail.jp

PARASITES ENHANCE ECOSYSTEM FUNCTIONS AND RESISTANCE TO DROUGHT IN A COASTAL ECOSYSTEM

Parasites are more diverse and numerous than the organisms they feed upon, yet we know little about how parasites affect natural ecosystems. In salt marsh ecosystems of the southeastern U.S., increasing drought stress interacts synergistically with keystone grazing by marsh periwinkles to generate marsh die-offs. Field manipulation of digenean trematode parasite prevalence within the marsh food web under both drought and non-drought conditions revealed that parasites, by suppressing keystone grazing, can sustain multiple ecosystem functions and help prevent climate-induced die-off of foundational plants. A survey along 1000km of coastline showed that trematodes parasitism is common in marsh periwinkles and that increasing infection prevalence along marsh die-off borders is correlated with decreased per capita grazing and slower rates of Spartina marsh ecosystem decline. Combined, these results demonstrate that parasites can simultaneously regulate both the functioning of an ecosystem and its ability to resist die-off in the face of drought.Master of Scienc