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Alumni indicates
the total number of the alumni of an institution winning
Nobel Prize in physics, chemistry, medicine and economics
and Fields Medals in mathematics. Alumni are defined as
those who obtain bachelor, Master’s or doctoral degrees
from the institution. Different weights are set according
to the periods of obtaining degrees. The weight is 100%
for alumni obtaining degrees in 1991-2000, 80% for alumni
obtaining degrees in 1981-1990, 60% for alumni obtaining
degrees in 1971-1980, 40% for alumni obtaining degrees in
1961-1970, and finally 20% for alumni obtaining degrees
in 1951-1960. If a person obtains more than one degrees
from an institution, the institution is considered once
only. Nobel Laureates in Physiology or Medicine are used
in both LIFE and MED ranking.
Award indicates
the total number of the staff of an institution winning
Nobel Prizes in physics, chemistry, medicine and economics
and Fields Medals in mathematics. Staff is defined as those
who work at an institution at the time of winning the prize.
Different weights are set according to the periods of winning
the prizes. The weight is 100% for winners in 2001-2007,
80% for winners in 1991-2000, 60% for winners in 1981-1990,
40% for winners in 1971-1980, and finally 20% for winners
in 1961-1970. If a winner is affiliated with more than one
institution, each institution is assigned the reciprocal
of the number of institutions. For Nobel Prizes, if a prize
is shared by more than one person, weights are set for winners
according to their proportion of the prize. Nobel Laureates
in Physiology or Medicine are used in both LIFE and
MED ranking.
HiCi indicates
the number
of highly cited researchers in twenty subject categories
defined and provided by isihighlycited.com. These highly
cited researchers are assigned to five broad subject fields.
If a researcher is listed in more than one subject category,
his/her weight for each category is the reciprocal of the
number of categories listed. Specifically, researchers who
are listed in Social Science, General Category are checked one by one, and they
are reclassified into three groups according to their affiliation
colleges/departments. People worked at health-related units
such as medical school, school of public health and school
of nursing are grouped for MED ranking,
people
affiliated to Psychology/Psychiatry departments are not
considered for the ranking, other individuals in this category
are totaled for SOC ranking.
PUB
indicates the total number of articles indexed by Science Citation
Index-Expanded and Social Science Citation Index in 2005
and 2006. Only publications of article type are considered.
Each article published by an institution is assigned into
one of the six broad subject fields according to journals
the article was published in (Classification
of Journal Categories), including above-mentioned
five broad subject fields and Interdisciplinary and Multidisciplinary
Sciences. If an article is published in a multi-assigned
journal (which is assigned to more than one ISI category),
it is divided into related groups.
TOP indicates the percentage
of articles published in the top 20% journals of each broad
subject field. Top 20% journals are defined as their impact
factors in the top 20% of each ISI category according to
Journal Citation Report, 2006. Articles in the top journals
of each ISI category are then aggregated into the six broad
subject fields and the TOP is calculated as the number
of articles in the top 20% journals of a particular broad
subject field to that in all journals of the field. A threshold
was set for the minimum number of top articles in each broad
subject field. The threshold was
defined as 10% of the average of top articles by the top
three institutions in each broad subject field. If the threshold
of a particular field is less than 100, then 100 is used.
If the number of top articles of an institution does not
meet the minimum threshold, the TOP indicator is
not calculated for the institution and its weight is relocated
to other indicators. Only publications of article type are
considered.
Fund indicates the total
engineering-related research expenditures in 2006. This
indicator is only used for ENG ranking. If the data
for all institutions of a country cannot be obtained, the
Fund indicator will not be considered for the institutions
and its weight will be relocated to other indicators. For
this ranking, the amounts of engineering-related research
expenditures are obtained only for institutions in USA and
some institutions in Canada.
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