The Iranian, or Persian, calendar is solar, with the particularity that the year is defined by two successive, apparent passages of the Sun through the vernal (spring) equinox. It is based on precise astronomical observations, and moreover uses a sophisticated intercalation system, which makes it more accurate than its younger European counterpart, the Gregorian calendar. It is currently used i...

We present an approach to na tura l language unders tanding based on a computable grammar of const~ctions. A construetionconsists of a set of features of form and a description of meaning in a context. A grammar is a set of constructions. This kind of grammar is the key element of MINCAL, an implemented natural language speech-enabled interface to an online calendar system. Tile architecture ha...

Temporal expressions that refer to a part of a calendar area in terms of common calendar divisions are studied. Our claim is that such a “calendar expression" (CE) can be described by a succession of operators operating on a calendar base (CB). These operators are categorized: a pointing operator that transform a CB into a CE; a focalizing/shifting operator that reduces or shifts the CE into an...

This paper examines lunisolar calendar anomalies in the Taiwan stock market, particularly the solar term effect. Using the Taiwan Stock Exchange Capitalization Weighted Stock Index (TAIEX), the significance of the solar term effect was tested. Statistical results showed that the lowest and the highest average stock returns are observed on Cold Dew and White Dew, respectively. Additionally, we f...

Ramadan is a sacred month for Muslims all around the world. During this lunar-based month, healthy adult Muslims are obligated to abstain from eating, drinking, smoking, or using oral medications from predawn to sunset. Followers will typically eat just after sunset and again before dawn (1). The Islamic lunar Hijri calendar is 11 days shorter than the Gregorian solar calendar, and therefore, t...

the chronobiology of the acute myocardial infarction (ami) is an interesting matter for recognition of the biological mechanism that might trigger ami. the present study was aimed to investigate the circadian, seasonal and circannual variation of the ami occurrence with solar, lunar, and christian months. a retrospective study of 1174 cases with diagnosis of ami was conducted. all cases include...

In the present work, a prototype of a new type of solar collectors, which called Direct Absorption Solar Collector, was built and its thermal performance is experimentally compared with conventional flat plate solar collector under transient and steady state conditions. Different volume fractions of multi wall carbon nanotubes in water and ethylene glycol mixture (70%:30% in volume) were used a...

In the 13th century, a new Chinese astronomical calculation was just put to use and it was almost entirely included in the calendar of Shoushi (formulated by Guo Shou-jing and his colleagues, epoch of AD 1281, adopted from AD 1281−1644). This calendar was one of the most famous and accurate in the history of China. The perfectly systematic theoretical models at that time had been developed for ...