This paper examines in detail the little-known Friday Mosque (masjid-i jāmi‘) of Firdaus, located southwest of the Khurasan, which has had a key role in developing Saljuq architecture in the area. The original scheme of the mosque was unclear. The lofty īwān and two flanking dome chambers on the west (qibla) side of the courtyard are the central core of the mosque. The main aim of the article is to analyse the architecture of the mosque and demonstrate its association with the architectural style of the Saljuq mosque in the Khurasan area.  During the conservation and restoration measures in 2006, some fresh materials were unearthed. The new findings shed light on the original features of the mosque and revealed its formation. The paper describes the city's history, defines its architectural characteristics, and then analyses the present information for replying to the research questions. Owing to the outcomes of the archaeological investigation, the study suggests the general scheme of the mosque as a further example of the two- īwān mosque, which may be dated to the late years of the 6th /12th century. Despite the importance of the mosque, no lengthy study has been published about the building. The accurate drawing of the plan and sections of this monument, with the proposal scheme for the reconstruction of the mosque, are being published in this paper for the first time.

Some functional inequalities in variable exponent Lebesgue spaces are presented. The bi-weighted modular inequality with variable exponent p(: ) for the Hardy operator restricted to non-increasing function which is....

One of the important issues in political jurisprudence, is the condition of the consent of majority for the adoption of the position of public guardianship (Velayat Ameh) by a qualified jurisprudent. This research is an attempt to study this issue based on Imam Khomeini’s works and statements, as the theoretician and founder of a religious government in Iran. The main question of this research is as follows: What is the role of the majority’s consent in legitimation and continuity of a qualified jurisprudent. According to some notions, if a just jurisprudent, with the support and cooperation of some groups of people, who are in minority, is able to form a government, he is dutybound to take practical action in this regard. But the analysis of the collected data for this research shows that in Imam Khomeini’s viewpoint, although the majority’s consent does not have an effective role in proving the public guardianship, it is a rational and canonical condition for assuming the position of guardianship. "Relying on public votes", "right to self-determination of the people", "paying attention to the majority vote" and "negation of coercive rule" are four important pillars in the statements of Imam Khomeini about the role of the people which obviously bind the ruling of the jurist to the consent of the majority The necessary data for this research were collected from library sources, including Imam’s Sahifa and were analyzed through continent analysis method.

The efforts for better planning of power systems from various viewpoints, such as economic, technical, and environmental, for reliably meeting the demand are continued. The unit commitment (UC) is one of these planning problems. In this paper, the security-constrained unit commitment problem is addressed with focusing on the strategic importance of electrical energy in the presence of smart grids. To achieve this, firstly, a comprehensive UC model, amalgamating with emergency demand response programs (EDRP), is presented. To adapt the model with war condition, a modified form of EDRP, the so called strategic EDRP, is also proposed. The problem is formulated as a mixed integer linear programming problem solved via the GAMS. Then, to investigate the impacts of smart demand response programs on the reliability of load meeting, several scenarios are conducted regarding a stochastic contingency model for generating units under war condition. It is found in result evaluation that smart demand side contribution under war condition can increase reliability and so decreases the costs.

Monitoring and evaluation of transformers are essential to prevent their insulation failure. In this paper, the use of 2-furan-carboxaldehyde (2-FAL) and methanol (MeOH) concentrations as the main products of paper insulation degradation, and insulation condition markers, has been studied. In order to study the degradation process and production of degradation products, the thermal aging process of the transformer insulation system was implemented in laboratory conditions. The results of laboratory studies show that in the early stages of degradation the amount of MeOH is significant compared to 2-FAL. Also, the estimation of the degree of polymerization (DP) in the early stages of degradation (DP>800) through MeOH concentration and with decreasing DP (DP <800) through 2-FAL concentration is closer to the real value. The results of studies performed on 35 distribution transformers confirm the production of significant amounts of MeOH in the early stages of degradation. Also, the estimated DP values for the studied transformers were obtained through 2-FAL and MeOH concentration. The results show that estimating the amount of DP through MeOH concentration is associated with a probability of error of about 9% compared to estimating DP through 2-FAL concentration.