20,031 research outputs found

    Making Government Work

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    For a city or state government to be viable in the last decade of the 20th century, elected leaders must view modern management as a crusade. The work force must receive fair and equitable compensation, and all must be committed to constant quality improvement. Newspapers, magazines, radio and television must report the success stories and the failures. Taxpayers must understand that government services can improve, and the leaders must be held accountable. This is possible throughout the country but it will not happen unless an educated electorate demands it and the elected officials understand the stakes and urgency involved

    Shapes of Semiflexible Polymer Rings

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    The shape of semiflexible polymer rings is studied over their whole range of flexibility. Investigating the joint distribution of asphericity and nature of asphericity as well as their respective averages we find two distinct shape regimes depending on the flexibility of the polymer. For small perimeter to persistence length the fluctuating rings exhibit only planar, elliptical configurations. At higher flexibilities three dimensional, crumpled structures arise. Analytic calculations for tight polymer rings confirm an elliptical shape in the stiff regime.Comment: 4 pages, 3 figures, Version as published in Phys. Rev. Let

    Trade Unions and Family-Friendly Policies in Britian.

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    This paper uses linked data on over 1,500 workplaces and 20,000 individuals from the 1998 British Workplace Employee Relations Survey to analyze the relationship between labor unions and the availability of six employer-provided family-friendly policies. Unions appear to help with work-family issues by increasing the availability of parental leave and job sharing options through a combination of negotiating for additional benefits and providing better information about existing policies. There is also a negative association between union membership and the availability of working at home options and, for parents of young children, child care subsidies.

    Trade Unions and Family Friendly Policies in Britain

    Get PDF
    This paper uses linked data on over 1,500 workplaces and 20,000 individuals from the 1998 British Workplace Employee Relations Survey to analyze the relationship between labor unions and the availability of six employer-provided family-friendly policies. Unions appear to help with work-family issues by increasing the availability of parental leave and job sharing options through a combination of negotiating for additional benefits and providing better information about existing policies. There is also a negative association between union membership and the availability of working at home options and, for parents of young children, childcare subsidies.

    Core CPI: excluding food, energy ... and used cars?

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    Although used car prices represent only a small portion of the consumer price index, their extreme volatility has had a major impact on the measured inflation rate. To explain this relationship, the authors describe how used cars are treated in the CPI and explore what might cause the wide swings in used car prices.Automobile industry and trade ; Consumer price indexes

    Development of affinity-based delivery of NGF from a chondroitin sulfate biomaterial.

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    Chondroitin sulfate is a major component of the extracellular matrix in both the central and peripheral nervous systems. Chondroitin sulfate is upregulated at injury, thus methods to promote neurite extension through chondroitin sulfate-rich matrices and synthetic scaffolds are needed. We describe the use of both chondroitin sulfate and a novel chondroitin sulfate-binding peptide to control the release of nerve growth factor. Interestingly, the novel chondroitin sulfate-binding peptide enhances the controlled release properties of the chondroitin sulfate gels. While introduction of chondroitin sulfate into a scaffold inhibits primary cortical outgrowth, the combination of chondroitin sulfate, chondroitin sulfate-binding peptide and nerve growth factor promotes primary cortical neurite outgrowth in chondroitin sulfate gels

    Optimizing Dual Interdependent Products from a Single Crop

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    The objective of the research is to determine the optimal grazing termination date that maximizes expected net returns from dual-purpose winter wheat production. Preliminary results indicate that grazing should be terminated at or before first hollow stem to generate the highest expected net returns in a dual-purpose winter wheat production enterprise.Crop Production/Industries,

    A new pathogen transmission mechanism in the ocean: the case of sea otter exposure to the land-parasite Toxoplasma gondii.

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    Toxoplasma gondii is a land-derived parasite that infects humans and marine mammals. Infections are a significant cause of mortality for endangered southern sea otters (Enhydra lutris nereis), but the transmission mechanism is poorly understood. Otter exposure to T. gondii has been linked to the consumption of marine turban snails in kelp (Macrocystis pyrifera) forests. It is unknown how turban snails acquire oocysts, as snails scrape food particles attached to surfaces, whereas T. gondii oocysts enter kelp beds as suspended particles via runoff. We hypothesized that waterborne T. gondii oocysts attach to kelp surfaces when encountering exopolymer substances (EPS) forming the sticky matrix of biofilms on kelp, and thus become available to snails. Results of a dietary composition analysis of field-collected snails and of kelp biofilm indicate that snails graze the dense kelp-biofilm assemblage composed of pennate diatoms and bacteria inserted within the EPS gel-like matrix. To test whether oocysts attach to kelp blades via EPS, we designed a laboratory experiment simulating the kelp forest canopy in tanks spiked with T. gondii surrogate microspheres and controlled for EPS and transparent exopolymer particles (TEP - the particulate form of EPS). On average, 19% and 31% of surrogates were detected attached to kelp surfaces covered with EPS in unfiltered and filtered seawater treatments, respectively. The presence of TEP in the seawater did not increase surrogate attachment. These findings support a novel transport mechanism of T. gondii oocysts: as oocysts enter the kelp forest canopy, a portion adheres to the sticky kelp biofilms. Snails grazing this biofilm encounter oocysts as 'bycatch' and thereby deliver the parasite to sea otters that prey upon snails. This novel mechanism can have health implications beyond T. gondii and otters, as a similar route of pathogen transmission may be implicated with other waterborne pathogens to marine wildlife and humans consuming biofilm-feeding invertebrates

    Plant pathogens as biocontrol agents for Cirsium arvense : an answer to MĂĽller and Nentwig

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    Recently, MĂĽller and Nentwig (2011) reviewed the plant pathogens that have been considered for biological control of the weed Cirsium arvense (L.) Scop. (Canada thistle, Californian thistle, creeping thistle), and concluded that the prospects have been largely overestimated. The premise of their conclusion is that no bioherbicide products have achieved marketability, which they surmise is due to lack of host specificity, effectiveness, and issues with application. While it is true that no microbial products have achieved marketability for this weed, we believe their reasoning for this is erroneous, and likely due to lack of distinction between two biocontrol approaches, specifically classical biocontrol, and innundative biocontrol (often referred to as the biopesticide approach). These two different types of biocontrol have different goals, and are applied in different ways
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