Hydrogen atoms are relatively electropositive and form hydrogen bonds with electronegative atoms. This article is about the index of scientific research impact. Subscription-based databases such as and the provide automated calculators. The h-index is an that attempts to measure both the and of the of a or scholar. 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. 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.
Because only the most highly cited articles contribute to the h-index, its determination is a simpler process. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. 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. H-Announce is a moderated one-way distribution network for events, conferences, calls for papers, calls for publication, programs, workshops, sources of short-term funding, fellowships, and news from H-Net and our affiliates. Numbers are very different in social science disciplines: The Impact of the Social Sciences team at found that social scientists in the United Kingdom had lower average h-indices.
Relics of the formerly unvoiced -h- persist in pedantic insistence on an historical object and in obsolete mine host. The use in digraphs e. It was introduced in July 2011 by as part of their work on. For the economic measure, see. From July 2011 have provided an automatically-calculated h-index and within their own profile. Thus, the true predictability of future h-index is much lower compared to what has been claimed before. For additional guidance, please refer to , located at the , or watch the.
Journal of the American Society for Information Science and Technology. Archived from on 5 May 2010. 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. It was found that the distribution of the h-index, although it depends on the field, can be normalized by a simple rescaling factor. This improvement can enhance the measurement sensitivity of the H-index.
The index is designed to improve upon simpler measures such as the total number of citations or publications. . Network editors receive the H-Announce daily digest and choose relevant content to repost to their networks. The index can also be applied to the productivity and impact of a as well as a group of scientists, such as a department or university or country. Journal of the American Society for Information Science and Technology. It has been suggested that in order to deal with the sometimes wide variation in h for a single academic measured across the possible citation databases, one should assume false negatives in the databases are more problematic than false positives and take the maximum h measured for an academic.
In earlier Latin the letter was called ha. Thus Modern English has words ultimately from Latin with missing -h- e. The letter passed into Roman use before this evolution, and thus retained there more of its original Semitic value. We see that every child has valuable strengths and real influence to improve the world around us. In Romanic languages, the sound became silent in Late Latin and was omitted in Old French and Italian, but it was restored in Middle English spelling in words borrowed from French, and often later in pronunciation, too. One can be easily convinced that ranking in coauthorship networks should take into account both measures to generate a realistic and acceptable ranking.
Retirement Retirement certified Tax Advisors have successfully completed the Block Advisors certification program focusing on the tax impact of choosing various retirement options. However, this finding was contradicted by another study by Hirsch. Beatles song H Half H Hardware H Hentai anime H High Risk H Hit Baseball H Hacker H Henry H Hell H Husband H Historical action code H Hospital H Hotel aviation letter code H Holy H Hundred H Hold baseball; relief pitcher stat H Honda H Hearts playing cards H Magnetic Field physics H Holder football H Harbor H Homo- Latin: human-taxonomic genus H Hungary International Auto Identification H Hyundai automobile brand H Hurricane s H Horizontal polarization H Humidity H Horn music H Hardness H Haze weather reports H Heer German H Hinge philately H Hexadecimal H Hologram Red Dwarf sitcom H Himalayan rabbit breed H Histamine H Planck's Constant 6. Among 36 new inductees in the National Academy of Sciences in biological and biomedical sciences in 2005, the median h-index was 57. In the Sun and other stars, the conversion of hydrogen into helium by nuclear fusion produces heat and light.
During the period January 1, 2000 — February 28, 2010, a physicist had to receive 2073 citations to be among the most cited 1% of physicists in the world. Investment Income Investment Income certified Tax Advisors are knowledgeable in the preparation of tax returns with various types of investment income. 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. Hydrogen is used to make rocket fuel, synthetic ammonia, and methanol, to hydrogenate fats and oils, and to refine petroleum. In addition, specific databases, such as the database can automatically calculate the h-index for researchers working in. 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. Perhaps something in the middle is more your speed, like the.