To control for heterogeneity across employment websites, we control for time-varying website-level attributes (e.g., the number of different types of postings that the websites hosted, services offered by the websites, age) and add website-level fixed effects.
Because all specifications include website-level fixed effects (δ i ), we exploit within-website variation to identify effects of Craigslist's entry in the websites' markets.
Table 3 reports estimates of the effects of Craigslist's presence on the online traffic at competing employment websites specifically, the number of visitors and page views per visitor on competing websites once we control for observed website-level and market-level heterogeneity.
We drop from the sample websites that served markets outside of the USA, websites for which information on key variables was not available, and given our inclusion of website-level fixed effects websites for which data are available in only one survey.
We found that, of the top 25 connections as shown in the website, gene-level and isoform-level networks have on average 12 shared connections, which is much smaller than the baseline of 25 obtained by assuming that there is no difference between gene and isoform-level networks.
National levels had the highest average amount of sponsorship per team/website with 14.6 per relevant website, regional level had an average of 8.8 and club an average of 7.1.
According to a new report from the Center for Responsive Politics and additional data from the center's website, cabinet-level appointees and their spouses have given nearly $1.7 million to confirming senators' campaigns, leadership PACs, and outside groups that poured money into their races.
We conducted a self-administered survey to assess the extent and the determinants of (1) the awareness of the existence of doctor-rating websites; (2) the level of actual usage of those websites; (3) the intention to use doctor-rating websites in the future.
Regarding the early education level, website presenting a developmentally appropriate early engineering curriculum is Puppeteering to Engineering (P2E) (http://puppetengineering.com).
Other important factors include hyperlink to the page on airline's website and the level of customer service it provides on Facebook.
