Citation classics in systematic reviews and meta-analyses : who wrote the top 100 most cited articles?

Background: Systematic reviews of the literature occupy the highest position in currently proposed hierarchies of evidence. The aims of this study were to assess whether citation classics exist in published systematic review and meta-analysis (SRM), examine the characteristics of the most frequently cited SRM articles, and evaluate the contribution of different world regions. Methods: The 100 most cited SRM were identified in October 2012 using the Science Citation Index database of the Institute for Scientific Information. Data were extracted by one author. Spearman’s correlation was used to assess the association between years since publication, numbers of authors, article length, journal impact factor, and average citations per year. Results: Among the 100 citation classics, published between 1977 and 2008, the most cited article received 7308 citations and the least-cited 675 citations. The average citations per year ranged from 27.8 to 401.6. First authors from the USA produced the highest number of citation classics (n=46), followed by the UK (n=28) and Canada (n=15). The 100 articles were published in 42 journals led by the Journal of the American Medical Association (n=18), followed by the British Medical Journal (n=14) and The Lancet (n=13). There was a statistically significant positive correlation between number of authors (Spearman’s rho=0.320, p=0.001), journal impact factor (rho=0.240, p=0.016) and average citations per year. There was a statistically significant negative correlation between average citations per year and year since publication (rho = -0.636, p=0.0001). The most cited papers identified seminal contributions and originators of landmark methodological aspects of SRM and reflect major advances in the management of and predisposing factors for chronic diseases. Conclusions: Since the late 1970s, the USA, UK, and Canada have taken leadership in the production of citation classic papers. No first author from low or middle-income countries (LMIC) led one of the most cited 100 SRM

Simulations of Nonthermal Electron Transport in Multidimensional Flows: Synthetic Observations of Radio Galaxies

We have applied an effective numerical scheme for cosmic-ray transport to 3D MHD simulations of jet flow in radio galaxies (see the companion paper by Jones et al. 1999). The marriage of relativistic particle and 3D magnetic field information allows us to construct a rich set of ``synthetic observations'' of our simulated objects. The information is sufficient to calculate the ``true'' synchrotron emissivity at a given frequency using explicit information about the relativistic electrons. This enables us to produce synchrotron surface-brightness maps, including polarization. Inverse-Compton X-ray surface-brightness maps may also be produced. First results intended to explore the connection between jet dynamics and electron transport in radio lobes are discussed. We infer lobe magnetic field values by comparison of synthetically observed X-ray and synchrotron fluxes, and find these ``inverse-Compton'' fields to be quite consistent with the actual RMS field averaged over the lobe. The simplest minimum energy calculation from the synthetic observations also seems to agree with the actual simulated source properties.Comment: 7 pages, 1 figure; to appear in Life Cycles of Radio Galaxies, ed. J. Biretta et al., New Astronomy Review

Freedom of Speech and the Problem of the Lawful Harmful Public Reaction: Adult use Cases of Renton and Mini Theatres

The constitutional right of freedom of speech protects the speech of adult erotic entertainment. The state, consequently, can not suppress such speech unless it is obscene. This constitutional protection helped to turn adult erotic entertainment into one of the nation\u27s growth industries. The constitutionally protected speech of adult erotic entertainment includes explicit sex films, nude dancing and erotic books. Various adult land uses sprung up to satisfy an apparent large public demand for this entertainment. Adult film theaters, of course, show filmed reproductions of live sex on a big screen. Some taverns offer nude dancing. Some adult bookstores sell more than books and pictures. Adopting a practice of the beverage industry, they also sell films for consumption both on and off the premises. Some bookstores go farther and offer the customer live nude dancing in a booth with a protective, but transparent glass partition between the .performer and the viewer. Thus, although the basic form of this expression has probably changed very little since ancient times, it clearly appears adaptable to the improvements of modern merchandising. In effect, however, the recent case of City of Renton v. Playtime Theaters, Inc. may allow the nation\u27s towns and small cities to prohibit the future development of adult speech entertainment uses within their territory

Local Hire and the State-Market-Participant Doctrine: A Trojan Horse for the Commerce Power of Congress

Local hire laws require that when units of local government hire employees a preference be given to residents of the governmental unit. These laws affect employees directly hired by the city or state, as well as employees hired by private contractors to do construction work. Naturally, this employment preference for residents discriminates against those who do not reside within the city or state. Nonresidents, however, are afforded extensive protection against discrimination by states and their political subdivisions by two clauses of the Constitution: the commerce clause and the interstate privileges and immunities, or comity, clause. This Article will analyze the Court\u27s decision in United Building & Construction Trades Council v. Mayor of Camden and cases that preceded it. The commerce and privileges and immunities clauses will be examined with respect to local hiring preferences, with a consideration of the operation of the two clauses in the private sector and their impact on the control and disposition of state property. Attention will then turn to recent market-participant decisions. This discussion will show that a change-of-residence local-hire law has a good chance of being upheld. Finally, this Article will attempt to explain the Court\u27s decisions concerning the state market-participant doctrine

Private Property, The Takings Clause and the Pursuit of Market Gain

This Article proposes a fair return model for the takings clause. This conception of the clause has been an operating principle of welfare capitalism for decades. The Article rejects the model of laissez faire capitalism that once dominated the landscape of the nation\u27s constitutional system and may come back again

The nature and solution of the community boy problem

Thesis (M.A.)--Boston Universit