نتایج جستجو برای: calendars

تعداد نتایج: 738  

ژورنال: تاریخ علم 2009
Grigor Broutian

Here is an attempt to present the ideas concerning the Medieval Persian and Arabic calendars as offered in the works of the 7th century A.D. Armenian scientist Anania Shirakatsi. The calendars of Christian Persians and Arabs, as explained in Anania’s work, are of the Julian type, with 365.25 days per year. By Persian and Arabic Calendars, he means variants of the Julian calendar used by groups ...

Journal: :The Mathematical Intelligencer 2015

Journal: :International Astronomical Union Colloquium 1987

Journal: :Nature 1872

Journal: :JAMA: The Journal of the American Medical Association 1899

Journal: :CoRR 2008
Manas Tungare Manuel A. Pérez-Quiñones Alyssa Sams

In this paper, we report on findings from an ethnographic study of how people use their calendars for personal information management (PIM). Our participants were faculty, staff and students who were not required to use or contribute to any specific calendaring solution, but chose to do so anyway. The study was conducted in three parts: first, an initial survey provided broad insights into how ...

Journal: :Folklore: Electronic Journal of Folklore 2010

Journal: :The Gerontologist 2000

Journal: :ACM Transactions on Computer-Human Interaction 2006

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