859 research outputs found
Measuring Monopsony: Using the Antitrust Toolbox to Protect Market Competition and Help the Television Consumer
Stuttering Min oscillations within E. coli bacteria: A stochastic polymerization model
We have developed a 3D off-lattice stochastic polymerization model to study
subcellular oscillation of Min proteins in the bacteria Escherichia coli, and
used it to investigate the experimental phenomenon of Min oscillation
stuttering. Stuttering was affected by the rate of immediate rebinding of MinE
released from depolymerizing filament tips (processivity), protection of
depolymerizing filament tips from MinD binding, and fragmentation of MinD
filaments due to MinE. Each of processivity, protection, and fragmentation
reduces stuttering, speeds oscillations, and reduces MinD filament lengths.
Neither processivity or tip-protection were, on their own, sufficient to
produce fast stutter-free oscillations. While filament fragmentation could, on
its own, lead to fast oscillations with infrequent stuttering; high levels of
fragmentation degraded oscillations. The infrequent stuttering observed in
standard Min oscillations are consistent with short filaments of MinD, while we
expect that mutants that exhibit higher stuttering frequencies will exhibit
longer MinD filaments. Increased stuttering rate may be a useful diagnostic to
find observable MinD polymerization in experimental conditions.Comment: 21 pages, 7 figures, missing unit for k_f inserte
The Ursinus Weekly, March 27, 1916
Basketball season very successful • Marion Ballou Fisk delights audience • New Weekly staff • Schaff prize essay: The toll of the European war • Literary societies • Glee Club concert Tuesday • YMCA officershttps://digitalcommons.ursinus.edu/weekly/2623/thumbnail.jp
Issues in Forest Restoration: Navigating the Motives and Mandates of Multiparty Monitoring
In this paper, we discuss what we learned about multiparty monitoring for collaborative, community-based forest restoration projects, after providing technical assistance and training to more than 50 New Mexico community groups between 2002 and 2007. These community groups were all recipients of Collaborative Forest Restoration Program (CFRP) cost-share grants. The grants require multi-stakeholder monitoring and assessment of project effectiveness in terms of ecological change and effects on management skills. Because all CFRP grantees are required to monitor their projects, this program provided a unique opportunity for assessing community-based, multiparty monitoring of forest restoration projects. Given four years experience providing monitoring assistance to CFRP grantees, we explore the following questions:What are the goals of multiparty monitoring? How does it work? What are reasonable expectations of multiparty monitoring? What are the best ways to help community groups achieve these expectations? Finally, how should a community prepare for the implementation of multiparty monitoring in a community-based forestry program
Valence and magnetic instabilities in Sm compounds at high pressures
We report on the study of the response to high pressures of the electronic
and magnetic properties of several Sm-based compounds, which span at ambient
pressure the whole range of stable charge states between the divalent and the
trivalent. Our nuclear forward scattering of synchrotron radiation and specific
heat investigations show that in both golden SmS and SmB6 the pressure-induced
insulator to metal transitions (at 2 and about 4-7 GPa, respectively) are
associated with the onset of long-range magnetic order, stable up to at least
19 and 26 GPa, respectively. This long-range magnetic order, which is
characteristic of Sm(3+), appears already for a Sm valence near 2.7. Contrary
to these compounds, metallic Sm, which is trivalent at ambient pressure,
undergoes a series of pressure-induced structural phase transitions which are
associated with a progressive decrease of the ordered 4f moment.Comment: 15 pages (including 7 figures) submitted to J. Phys.: Condens. Matte
Monitoring Handbook 4: Monitoring ecological effects
The goal of restoration should be to create a self-sustaining ecosystem that functions well and needs little maintenance. Monitoring is essential in order to see if projects are achieving improved ecological conditions. Part 1 of this handbook includes a description of common restoration goals and indicators. Methods for measuring each indicator are described in Part 2
Monitoring Handbook 1: What is multiparty monitoring?
There are many reasons for monitoring your project and using a multiparty approach. Multiparty monitoring will increase your understanding of the effects of restoration actions, support adaptive management, and set a course for future management. Multiparty monitoring also helps build trust among partners and establish project accountability in the broader community. This handbook will guide you through the initial steps required to develop a multiparty monitoring process
Monitoring Handbook 5: Monitoring social and economic effects of forest restoration
Forest restoration projects frequently have social, economic, and cultural goals as well as ecological goals. For instance, project partners may hope that their project will provide new jobs and reduce local unemployment, keep youth in the community, reduce the wildfire risk to human lives and property, or increase public involvement in national forest planning and decision making. Monitoring provides a way to determine whether you are headed toward or away from these goals. For example, your monitoring group might want to ask, Is our community becoming more or less sustainable? Are local management skills improving or getting worse? or Is the use of small-diameter trees increasing or decreasing? Part 1 of this handbook describes indicators that can help community-based multiparty monitoring groups measure changes in common forest restoration project goals. Part 2 describes specific methods for measuring change in each indicator
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