in this paper we study properties of symbols such that these belong to class of symbols sitting insidesm ρ,φ that we shall introduce as the following. so for because hypoelliptic pseudodifferential operatorsplays a key role in quantum mechanics we will investigate some properties of m−hypoelliptic pseudodifferential operators for which define base on this class of symbols. also we consider maxi...

This paper examines the role of policy in coordination environments such as currency crises and bank runs by introducing signaling in a global game. While exogenous asymmetric information has been shown to select a unique equilibrium, we show that the endogenous information generated by policy interventions leads to multiple equilibria. Multiplicity obtains even in environments where the policy...

Sensors in the built environment ensure safety and comfort by tracking contaminants occupied space. In event of contaminant release, it is important to use limited sensor data rapidly accurately identify release location contaminant. Identification will enable subsequent remediation as well evacuation decision-making. previous work, we used an operator theoretic approach—based on Perron–Frobeni...

physiologically thermal comfort condition is a limit of temperature and humidity. ,in which thermal control mechanism of human body is in its least activity . thermal comfort conditions not only have impact on sizes of heating and cooling equipment ,but also affects the thickness of insulation, and .energy, consumption of buildings. it is necessary to define thermal comfort condition for differ...

Although airports contribute to region’s economic development, they have a negative impact on the environment and on the communities around them. Environmental impacts such as noise, air and water pollution, and natural resources consumption are some of the implications resulting from the operation of airports that have the ability to constrain airports further development. In addition, increas...

madam, cardamom, often referred to as queen of spices because of its very pleasant aroma and taste, has a history as old as human race. it is especially common in the indian subcontinent and is known for its delicious aroma, aphrodisiac properties and also as a common folk remedy to treat stomach aches.[1] both in middle east and india, it is used for flavoring hot beverages such as tea and cof...

introduction: dark or black coloured gingiva is an esthetic concern especially in subjects with high lip line or gummy smile. gingival depigmentation procedure is a type of perioplastic surgery where the gingival epithelium is excised with various techniques to lighten the colour of the gingiva. the aim of this study was to compare the clinical efficacy of gingival depigmentation procedure with...

the knowledge about climatic comfort plays an important role in the humans life and her activities. in fact many human activates are directly related with climatic comfort in every region. this paper analyzed the climatic comfort in province kurdistan (sanandaj, saghez, bijar, ghorve, zarine, marivan and bane meteorological stations). rates of climatic comfort analyzed in meteorological station...

This paper studies the linkages between housing and consumption in the United States taking into account regional variation. We estimate national and regional housing factors from a comprehensive set of US price and quantity data available at mixed frequencies and over different time spans. Our housing factors pick up the common components in the data and are less affected by the idiosyncratic ...