scholarly journals Calendar [Dates Ahead]

2021 ◽  
Vol 38 (6) ◽  
pp. C3-C3
Keyword(s):  
2005 ◽  
Vol 08 (02) ◽  
pp. 239-253 ◽  
Author(s):  
PETER CARR ◽  
ALIREZA JAVAHERI

We derive a partial integro differential equation (PIDE) which relates the price of a calendar spread to the prices of butterfly spreads and the functions describing the evolution of the process. These evolution functions are the forward local variance rate and a new concept called the forward local default arrival rate. We then specialize to the case where the only jump which can occur reduces the underlying stock price by a fixed fraction of its pre-jump value. This is a standard assumption when valuing an option written on a stock which can default. We discuss novel strategies for calibrating to a term and strike structure of European options prices. In particular using a few calendar dates, we derive closed form expressions for both the local variance and the local default arrival rate.


1956 ◽  
Vol 9 (4) ◽  
pp. 545 ◽  
Author(s):  
EG Bowen

It is reasonable to suppose that observations like that of cirrus cloud in the upper air and heavy falls of snow in relatively warm latitudes correspond to the presence of a large number of freezing nuclei in the atmosphere. A 300-year record of snow covering the ground at Tokyo and a 10-year record of cirrus cloud in Western Australia are examined and compared with one year's measurement of freezing nucleus concentration. The curves show a high degree of correlation, and all three tend to maximize on certain calendar dates.


2021 ◽  
Vol 9 (1) ◽  
pp. 1-26
Author(s):  
Ahmad Musonnif

Calendar had a function as a regulator of community activities, both civil and religious activities. The Islamic calendar which whom established by Prophet Muhammad by adopting Lunar system also had a civil function. The Islamic calendar also had a major element to prescribe the timing of worships such as the time of fasting and Hajj. The Shamsi Hijri Calendar of Iran and the Ahmadiyya Community were calendars based on solar system which the beginning of the year starts from the Hijrah of Prophet Muhammad. The Iranian calendar dates back to ancient Persian times while the Ahmadiyya calendar is an adoption of the Gregorian calendar labeled by the symbols of Islam. Viewed from the perspective of Siyasah Shar'iyyah, the two calendars designed so each of community gets maslahat according to paradigm of each authorities. The Iranian Hijri Shamsi Calendar designed for the Iranians to keep their identity as Persians as well as to show their Islamic identity and shiáh characteristics. The Ahmadiyya calendar designed as an effort to Islamize the Gregorian calendar aside from an effort to internationalize this Jamaah and also as a symbol of relationship between Mirza Ghulam Ahmad, the founder of Ahmadiyya and Prophet Jesus Christ since Mirza Ghulam Ahmad also pronounced as Messiah as what it seems in Prophet Jesus. In the framework of al-siyasah al-Shar'yyah, the Iranian Hijri Shamsi calendar design is not as problematic as this calendar for religious purposes nor to the Ahmadiyya calendar, as both calendars were nothing more than a civil calendars.  


Radiocarbon ◽  
2014 ◽  
Vol 56 (02) ◽  
pp. 877-881
Author(s):  
Adam Walanus ◽  
Dorota Nalepka

The calibration procedure, and especially the nonlinear shape of the calibration curve, makes analyzing a possible dating result a far from straightforward process. This is especially so if the goal is to distinguish between two relatively close events. Proposed herein is a calculator, or alternatively a graph, which enables reading of the difference between two radiocarbon ages corresponding to their expected calendar ages. The result may surprise the less experienced14C users. Such a calculation also indicates the time periods with high or low potential for application of the wiggle-matching method.


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