The main ecological services of the sand-fixed forest are windbreak, soil erosion control, and atmospheric dust retention. In this paper, the ecological services of Populus simonii forest were assessed by simultaneous measurements of wind speeds, daily amount of soil surface wind erosion, and amount of atmospheric dust deposition at different observation sites located within and outside the for...

The flywheel energy storage systems (FESSs) are suitable for improving the quality of the electric power delivered by the wind generators and to help these generators to contribute to the ancillary services. This paper investigates the energetic performances of a low-speed FESS with a classical squirrel-cage Induction Machine (IM) in the aim of its association to a wind generator. Index Terms –...

Effective temperature is a term used to rate the cooling or heating power of the physical environment in terms of dry bulb temperature. For livestock exposed to cold, windy environments, effective temperature must now be predicted by a wind-chill index prepared for humans and designed without regard to extemal insulation_ suck~hai r or wool. The human wind-chill relationship is quadratic in nat...

erosion by wind is one of the most important factors in desert environment. prevailing winds can shift sand dunes and affect their accumulation. also, wind regime determines the direction of sand dune mobility. the aim of this research was to investigate sand drift potential using sand movement models. for this research, wind data between 1986 and 2005 from the meteorological station of yazd we...

-Electricity plays an important role in human civilization. Every aspect of human life and its well being depends on the energy conversion into electricity and utilize it for optimal performance in all kinds of industries. Wind energy is one such important energy being used in the world for producing electricity. However, wind speed is not predictable and thus the wind energy conversion is not ...

We studied the arboreal composition of the tropical mountain rainforest's upper canopy in the San Martín Pajapán volcano, Tatahuicapan, Veracruz, México (18 degrees 26' N; 94 degrees 17' W). Two forest stands were studied, one in an exposed position and one protected. The Shannon index of diversity and the Jaccard index of affinity were calculated to calculate affinities between plots and betwe...

OBJECTIVE The study examined changes in the use of shelters in New York City by mentally ill persons with a history of homelessness who received housing placements through the New York-New York (NY/NY) housing initiative between 1990 and 1999 and the impact of the initiative on the overall demand for shelter beds in the city. METHODS Computerized service records on housing, shelter use, and h...

In this study, we first analyze the specific dynamics of the shelter site location problem for an application in Turkey and develop a mixed integer linear programming based methodology which incorporates with their requirements of the Turkish Red Cresent and improve their current system. The mathematical model maximizes the minimum weight of open shelter areas while deciding on the location of ...

INTRODUCTION Intimate partner violence is a significant public health problem, with shelters offering the predominant community-based solution. Shelters in Canada are mandated to provide a safe place, protection planning, advocacy and counseling among other services. Recently it has been noted the role of the shelter was shifting from an inpatient to outpatient model with a focus on increased i...