Statistical Analysis in Art Conservation Research

Evaluates all components of data analysis and shows that statistical methods in conservation are vastly underutilized. Also offers specific examples of possible improvements

Starting Smaller; Staying Smaller: America's Slow Leak in Job Creation

Considers the slowdown in jobs created by new businesses - the most critical source of job creation - from before the recession; potential contributing factors, including industrial dynamics and structural changes; and long-term effects

An Overview of the Kauffman Firm Survey: Results From 2009 Business Activities

Highlights findings from longitudinal data on new businesses' performance since 2004 as well as new firms founded in 2009, including trends in customer payment problems and loan denials, financial injections, and sources of comparative advantage

Casting a Wide Net: Online Activities of Small and New Businesses in the United States

Examines trends in businesses' use of Web sites and e-mail, online sales, and outcomes of such online activities by industry, age and size of firm, and owners' race/ethnicity, gender, location, and education

An Overview of the Kauffman Firm Survey: Results From 2010 Business Activities

Examines longitudinal data on new businesses' survival and performance since 2004 as well as new firms founded in 2010, including trends in slow or lost sales, predictability of business conditions, credit availability, and product or service innovation

Who Are User Entrepreneurs? Findings on Innovation, Founder Characteristics, and Firm Characteristics

Documents the prevalence of innovators who create products or services for their own use then start firms, by industry and type. Examines founder and firm characteristics, revenue growth, job creation, R&D investment, and intellectual property creation

Solar particle history: 1983 version

It has long been known that the great majority of nuclear active solar particles are emitted in a few large storms in each 11 year cycle. A single storm in August 1972 dominated the fluence of particles of energy >10 MeV. Such storms can occur, it seems, at any time within the more active half ot the cycle. On a time scale long compared to 11 years, the knowledge comes from two sources. Terrestrial C-14 sets limits on the largest proton bursts that can have taken place in the 8000 years. Lunar surface samples have yielded data on mean fluxes on a time scale from the C-14 to the Mn-53 mean life. A mean flux was found of 70 protons >10 MeV and a rigidity constant R sub o = 100 MV to be robust on the 1,000,000 to 10,000,000 year time scale. Over the shorter periods represented by C-14 and Kr-81 the fluxes seem to have been higher by a factor of roughly three. Some examples of dating are discussed