Journal of the American Society for Information Science and Technology. The donkey carried a heavy burden, not an heavy burden. Biochemical and Biophysical Research Communications. A detailed study showed that the Web of Science has strong coverage of journal publications, but poor coverage of high impact conferences. One can be easily convinced that ranking in coauthorship networks should take into account both measures to generate a realistic and acceptable ranking. These Tax Advisors have successfully completed advanced training in tax situations unique to Sole Proprietors, Partnerships and S Corporations.
Cannot be combined with guest designer collaborations or select special collections. This article is about the index of scientific research impact. Hydrogen is used to make rocket fuel, synthetic ammonia, and methanol, to hydrogenate fats and oils, and to refine petroleum. It might be simpler to divide citation counts by the number of authors before ordering the papers and obtaining the h-index, as originally suggested by Hirsch. It occurs in water in combination with oxygen, in most organic compounds, and in small amounts in the atmosphere as a gaseous mixture of its three isotopes protium, deuterium, and tritium in the colorless, odorless compound H 2. It has been stated that citation behavior in general is affected by field-dependent factors, which may invalidate comparisons not only across disciplines but even within different fields of research of one discipline.
The lightest and most abundant element in the universe, normally consisting of one proton and one electron. Not valid for purchase of gift cards or shipping. Hi, To provide a more secure and pleasant fashion experience at hm. Atomic number 1; atomic weight 1. Just do your best to be a good communicator and move on! The h-index is intended to measure simultaneously the quality and quantity of scientific output. It is possible to try the predictions using an online tool.
However, later work has shown that since h-index is a cumulative measure, it contains intrinsic auto-correlation that led to significant overestimation of its predictability. For example, if we have a researcher with 5 publications A, B, C, D, and E with 10, 8, 5, 4, and 3 citations, respectively, the h index is equal to 4 because the 4th publication has 4 citations and the 5th has only 3. In addition, specific databases, such as the database can automatically calculate the h-index for researchers working in. However, Hirsch noted that values of h will vary between different fields. Scopus has better coverage of conferences, but poor coverage of publications prior to 1996; Google Scholar has the best coverage of conferences and most journals though not all , but like Scopus has limited coverage of pre-1990 publications.
Tax, title, and license not included. Of course this method does not deal with academic age bias. Scientists with high h 2 upper percentages are perfectionists, whereas scientists with high h 2 lower percentages are mass producers. Just enter your current password to continue. The letter passed into Roman use before this evolution, and thus retained there more of its original Semitic value. Perhaps something in the middle is more your speed, like the.
Therefore, these disciplines have lower citation thresholds in the Essential Science Indicators, with the lowest citation thresholds observed in social sciences 154 , computer science 149 , and multidisciplinary sciences 147. Total number of papers does not account for the quality of scientific publications, while total number of citations can be disproportionately affected by participation in a single publication of major influence for instance, methodological papers proposing successful new techniques, methods or approximations, which can generate a large number of citations , or having many publications with few citations each. However, this finding was contradicted by another study by Hirsch. As these metrics are percentages, they are intended to give a qualitative description to supplement the quantitative h-index. An herb garden in a historical setting. The h-index serves as an alternative to more traditional journal metrics in the evaluation of the impact of the work of a particular researcher.
For example, the Meho and Yang study found that Google Scholar identified 53% more citations than Web of Science and Scopus combined, but noted that because most of the additional citations reported by Google Scholar were from low-impact journals or conference proceedings, they did not significantly alter the relative ranking of the individuals. Each database is likely to produce a different h for the same scholar, because of different coverage. Tax, title, and license not included. For the economic measure, see. In contrast, if the same publications have 25, 8, 5, 3, and 3, then the index is 3 because the fourth paper has only 3 citations.
Retirement Retirement certified Tax Advisors have successfully completed the Block Advisors certification program focusing on the tax impact of choosing various retirement options. This method has not been readily adopted, perhaps because of its complexity. We also have pre-owned options at our. The h-index is an that attempts to measure both the and of the of a or scholar. Tax, title, and license not included. May not be redeemed for cash or cash equivalent and is not transferable.
. Sign in Hi, To provide a more secure and pleasant fashion experience at hm. Hydrogen atoms are relatively electropositive and form hydrogen bonds with electronegative atoms. The index was suggested in 2005 by , a physicist at , as a tool for determining ' relative quality and is sometimes called the Hirsch index or Hirsch number. This improvement can enhance the measurement sensitivity of the H-index.
Because only the most highly cited articles contribute to the h-index, its determination is a simpler process. Journal of the American Society for Information Science and Technology. Tax, title, and license not included. Honeymooners go to a hideaway, not an hideaway. The use in digraphs e. It was found that the distribution of the h-index, although it depends on the field, can be normalized by a simple rescaling factor.