2,192 research outputs found

    Nuclear Physics Review

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    Anchoring low-energy nuclear physics to the fundamental theory of strong interactions remains an outstanding challenge. I review the current progress and challenges of the endeavor to use lattice QCD to bridge this connection. This is a particularly exciting time for this line of research as demonstrated by the spike in the number of different collaborative efforts focussed on this problem and presented at this conference. I first digress and discuss the 2013 Ken Wilson Award.Comment: Proceedings of a plenary presentation at the 31st International Symposium on Lattice Field Theory - LATTICE 2013, July 29 - August 3, 2013, Mainz, Germany; v2 thanks to M.Savage for pointing out an overly aggressive average in Fig. 3; v3 oops, wrong figure 3 was included, fixed now; v4 fixed typos including Eqs. 1.12, 1.17, 1.18; v5 added missing references for 3-body finite volume spectru

    The Electromagnetic Self-Energy Contribution to M_p - M_n and the Isovector Nucleon Magnetic Polarizability

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    We update the determination of the isovector nucleon electromagnetic self-energy, valid to leading order in QED. A technical oversight in the literature concerning the elastic contribution to Cottingham's formula is corrected and modern knowledge of the structure functions is used to precisely determine the inelastic contribution. We find \delta M_{p-n}^\gamma = 1.30(03)(47) MeV. The largest uncertainty arises from a subtraction term required in the dispersive analysis, which can be related to the isovector magnetic polarizability. With plausible model assumptions, we can combine our calculation with additional input from lattice QCD to constrain this polarizability as: \beta_{p-n} = -0.87(85) x 10^{-4} fm^3.Comment: 5 pages, version accepted for publication in PR

    Increasing Placement through Professional Networking

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    [Excerpt] The national percentage of people of working age with disabilities who are employed continues to hover around 37%, compared with 80% for their peers without disabilities. However, according to the Harris Poll, 67% of people with disabilities who are not currently working would like to be. In the late 1990s, a Presidential Task Force began work on improving the employment rate for adults with disabilities, a national priority that was further supported by the New Freedom Initiative of 2001, creating a bipartisan effort. Despite these initiatives, the rate of employment for people with disabilities has not increased. While many people are involved in the effort to improve this employment picture, much of the responsibility for helping people with disabilities secure employment falls on the shoulders of job developers. Typically, job developers act as the bridge between employment services, job seekers, and businesses seeking qualified employees. Good job developers need knowledge, persistence, creativity, and a superior ability to build relationships. A successful job developer knows how to collaborate with others. Toward that end, one strategy increasing in popularity involves networking with fellow placement professionals working at other provider agencies or for the state. Referred to as an employment networking group, this model offers job developers the opportunity to significantly increase their networking base and thus their own efficiency
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