نتایج جستجو برای: artificial satellite

تعداد نتایج: 365560  

2014
Jonathan Bennie Thomas W. Davies James P. Duffy Richard Inger Kevin J. Gaston

Since the 1970s nighttime satellite images of the Earth from space have provided a striking illustration of the extent of artificial light. Meanwhile, growing awareness of adverse impacts of artificial light at night on scientific astronomy, human health, ecological processes and aesthetic enjoyment of the night sky has led to recognition of light pollution as a significant global environmental...

Journal: :Celestial Mechanics and Dynamical Astronomy 2023

Abstract The merits of a perturbation theory based on mean-to-osculating transformation that is purely periodic in the fast angle are investigated. exact separation perturbed Keplerian dynamics into short-period effects and long-period mean frequencies achieved by non-canonical transformation, which, therefore, cannot be obtained Hamiltonian methods. For this case, evolution elements strictly a...

Journal: :Journal of the Japan Society for Composite Materials 1985

2001
D. Borrajo D. Meziat

Planning and scheduling are closely related areas with which the AI community has been long concerned. The first one deals with finding plans to achieve some goals from an initial state; that is, a sequence of activities that will modify the initial state into another that satisfies the goals. The second one refers to the allocation of available resources to known activities over time in order ...

Journal: :تحقیقات آب و خاک ایران 0
سعید امامی فر کارشناس ارشد گروه مهندسی آبیاری و زهکشی پردیس ابوریحان دانشگاه تهران علی رحیمی خوب دانشیار گروه مهندسی آبیاری و زهکشی پردیس ابوریحان دانشگاه تهران علی اکبر نوروزی استادیار پژوهشکدة حفاظت خاک و آبخیزداری

the use of satellite data in an estimation of air temperature (ta) near the earth’s surface has turned into an effective way for a large area of high spatial and temporal resolution. throughout the present study, artificial neural network (ann) as well as m5 model tree were employed to estimate ta in khuzestan province (south west of iran), using satellite remotely sensed land surface temperatu...

2016
Anil Kumar Goswami Heena Joshi S. P. Mishra

Artificial Neural Network (ANN) is an important Artificial Intelligence (AI) and Machine Learning (ML) method used in various remote sensing applications such as image classification, pattern recognition etc.One of important remote sensing applications is the landuse classification i.e. classification of satellite data into various landuse classes such as forest, waterbody, snowcover etc. Landu...

2013
Gowri Ariputhiran

Remote sensing data provides much essential and critical information for monitoring many applications such as image fusion, change detection and land cover classification. This paper proposed about the classification and extraction of spatial features in urban areas for high resolution multispectral satellite image. Spectral information is the foundation of remotely sensed image classification....

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