نتایج جستجو برای: such as albedo

تعداد نتایج: 5964311  

2017
Matthieu Million Didier Raoult

Modern diagnostic methods enable clinicians to look beyond a diagnosis of chronic Q fever and discern whether patients instead have persistent focalized Coxiella burnetii infection(s). Use of these methods and development of criteria to define and treat such infections, especially cardiovascular infections, will improve the prognosis for patients previously thought to have chronic Q fever.

2011
Britt Anderson

Given that the core issues of attention research have been recognized for millenia, we do not know as much about attention as we should. I argue that the reasons for this failure are (1) we create spurious dichotomies, (2) we reify attention, treating it as a cause, when it is an effect, and (3) we equate a collection of facts with a theory. In order to correct these errors, we need a new techn...

2006
PETE MANDIK Paul Churchland

Is the Introspection Thesis true? It certainly isn’t obvious. Introspection is the faculty by which each of us has access to his or her own mental states. Even if we were to suppose that mental states are identical to brain states, it doesn’t follow immediately from this supposition that we can introspect our mental states as brain states. This point is analogous to the following. It doesn’t fo...

2011
AARON DONOHOE DAVID S. BATTISTI

The planetary albedo is partitioned into a component due to atmospheric reflection and a component due to surface reflection by using shortwave fluxes at the surface and top of the atmosphere in conjunction with a simple radiation model. The vast majority of the observed global average planetary albedo (88%) is due to atmospheric reflection. Surface reflection makes a relatively small contribut...

2006
Hon-Keat Pong Tat-Jen Cham

Mutual information has been used for matching and registering 3D models to 2D images. However, in Viola’s original framework [1], surface albedo variance is assumed to be minimal when measuring similarity between 3D models and 2D image data using mutual information. In reality, most objects have textured surfaces with different albedo values across their surfaces, and direct application of this...

Journal: :The British journal of general practice : the journal of the Royal College of General Practitioners 2008
Jane Sandall

conomists love to say that there is no such thing as a free lunch. But the Chilean government agency responsible for school grants, Junta Nacional de Auxilio Escolar y Becas (JUNAEB), is an exception to the rule. During the school year, JUNAEB provides breakfast and lunch for 2 million children in primary and secondary public schools. In a developing country where about 14 percent of children u...

2012
Salvador E. Ayala-Raggi Leopoldo Altamirano-Robles Janeth Cruz-Enriquez

One of the more exciting and unsolved problems in computer vision nowadays is automatic, fast and full interpretation of face images under variable conditions of lighting and pose. Interpretation is the inference of knowledge from an image. This knowledge covers relevant information, such as 3D shape and albedo, both related to the identity, but also information about physical factors which aff...

Journal: :Remote Sensing 2015
Xiaodan Wu Qing Xiao Jianguang Wen Qiang Liu Dongqin You Baocheng Dou Yong Tang Xiaowen Li

To evaluate and improve the quality of land surface albedo products, validation with ground measurements of albedo is crucial over the spatially and temporally heterogeneous land surface. One of the essential steps for satellite albedo product validation is coarse scale observation technique development with long time ground-based measurements. In this paper, the optimal nodes were selected fro...

Journal: :Remote Sensing 2015
Jun Zhai Ronggao Liu Jiyuan Liu Lin Huang Yuanwei Qin

A large decrease in the land surface albedo of the Loess Plateau was observed from 2000 to 2010, as measured using satellite imagery. In particular, ecological restoration program regions experienced a decrease in peak season land surface albedo exceeding 0.05. In this study, we examined the spatial and temporal patterns of variation during the peak season albedo in the Loess Plateau and analyz...

2009
Terhikki Manninen Aku Riihelä

Surface albedo estimates based on optical and microwave satellite data were compared to corresponding ground based values in a Subarctic boreal forest test site. The ground based albedo values were derived from radiation measurements carried out at the forest floor using an albedo model and measured global and diffuse radiation data. The use of both optical and microwave satellite data turned o...

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