432,627 research outputs found

    T-Parity Violation by Anomalies

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    Little Higgs theories often rely on an internal parity ("T-parity'') to suppress non-standard electroweak effects or to provide a dark matter candidate. We show that such a symmetry is generally broken by anomalies, as described by the Wess-Zumino-Witten term. We study a simple SU(3) x SU(3)/SU(3) Little Higgs scheme where we obtain a minimal form for the topological interactions of a single Higgs field. The results apply to more general models, including [SU(3) x SU(3)/SU(3)]^4, SU(5)/SO(5), and SU(6)/Sp(6).Comment: 17 page

    What Is The Competency Model For HR Professionals To Prepare Them to Accept Digital Change in the HR Function?

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    [Excerpt] With changes in the workforce demographics, global economy, and emerging technology, the role of the HR professional has already changed drastically and will continue to do so. The future of work in the digital age is upon us and work environments include an increasing plurality of means to get work done. This entails transformation and reskilling for HR professionals as they partner with business leaders to orchestrate effective human capital solutions. This also presents an opportunity for HR leadership to closely examine the competencies of their workforce and determine the what and the how of upskilling or reskilling to ensure the HR professionals at their company are equipped to contribute in this ever-evolving business environment. HR professionals will increasingly need to be agile, strategic contributors to the businesses they serve, thoughtfully engaged with employees throughout their lifecycle, and be well-versed in data analytics and technologies. With this in mind, it is essential for organizations to prepare now and create action plans for job displacement and reskilling of their workforce

    The Picture Painter

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    Nonperturbative Techniques for QED Bound States

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    Advantages of using a low-energy effective theory to study bound state properties are briefly discussed, and a nonperturbative implementation of such an effective theory is described within the context of nonrelativistic quantum mechanics. The hydrogen atom, in the approximation of a structureless, infinite-mass nucleus, but with the leading relativistic and radiative corrections included, is used to demonstrate the construction and solution of the effective theory. The resulting Hamiltonian incorporates a finite ultraviolet cutoff and can be solved nonperturbatively. An appendix lists explicit formulae for the various matrix elements necessary to diagonalize the Hamiltonian using gaussian basis sets.Comment: 11 pages. Talk presented at the MRST conference, U. of Rochester, 8-9 May 2000, to appear in the proceeding

    Book review: Rethinking public service delivery

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    Many public services today are delivered by external service providers such as private firms and voluntary organizations. These new ways of working – including contracting, partnering, client co-production, inter-governmental collaboration and volunteering – pose challenges for public management. This book aims to assess the ways in which public sector organizations can improve their services and outcomes by making full use of the alternative ways of getting things done. Alastair Hill believes it is in many ways a milestone work, both in its mapping of the complex 21st Century landscape of public service delivery, but also in offering a clear framework for practitioners

    North to the Future of the Right to Bear Arms: Analyzing the Alaska Firearms Freedom Act and Applying Firearm Localism to Alaska

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    The Second Amendment has gone from a rarely invoked constitutional provision to being one of the most hotly contested and politically charged protections of the Bill of Rights. Additionally, small government advocates have used local gun laws as a mechanism for challenging broad government regulation while conversely advocating for states’ rights, with Alaska recently joining a series of states seeking to expand local gun rights by passing state laws that nullify federal gun laws. Given Supreme Court case law and as demonstrated by recent Ninth Circuit precedent, the nullification course is almost certainly ill fated. Apart from the big government/small government proxy war being waged through local gun laws, others see the local, traditional character of the right to bear arms in a particular place as the most appropriate manner for scrutinizing regulation, given Supreme Court precedent and historic tradition

    Reducing attrition in panel studies in developing countries.

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    BACKGROUND: Panel studies offer repeated observations of individuals over time, but the mobility of populations in the developing world often causes attrition in panel studies. Such attrition can cause bias if it is selective but can be reduced by tracking respondents. Tracking in developing countries can be costly and difficult as populations are often highly mobile, infrastructure is poor, structures frequently change, and formal address systems or population records rarely exist. Method In this paper, the attrition and tracking experiences of panel studies in developing countries are reviewed and recommendations made for ensuring effective tracking. Comments Tracking can reduce attrition by up to 45% and is feasible if procedures are locally appropriate, well planned, involve the community, collect as much locating data as possible, and have explicit criteria, and if tracking is done at regular intervals, and interviewers are well trained, supervised, and motivated. CONCLUSION: Attrition is an important issue in panel studies, whilst tracking can be costly it can reduce attrition if effective procedures are used
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