Vertical mixing ratio profiles of nitrous acid (HONO) were measured in a clearing and on the forest floor in a rural forest environment. For the forest floor, HONO was found to predominantly deposit, whereas for the clearing, net deposition dominated only during nighttime and net emissions were observed during daytime. For selected days, net fluxes of HONO were calculated from the measured prof...

The once remote and inaccessible forests of Guatemala's Maya Biosphere Reserve (MBR) have recently experienced high mtes of deforestation corresponding to human migration and expansion of the agricultural frontier. Given the importance of land-cover and land-use change data in conservation planning, accurate and efficient techniques to detect forest change from multi-tempoml satellite imagery w...

We estimate the effects of neighbors’ deforestation actions on individuals’ deforestation decisions in Costa Rica. To address simultaneity and the presence of spatially correlated unobservable factors, we instrument for neighboring deforestation using topographic and biological characteristics of neighboring parcels. We find evidence that neighboring deforestation significantly raises the proba...

Due to strong light scattering in tissue, both the spatial resolution and maximum penetration depth of optical-resolution photoacoustic microscopy (OR-PAM) deteriorate sharply with depth. To reduce tissue scattering, we propose to use glycerol as an optical clearing agent in OR-PAM. Our results show that the imaging performance of OR-PAM can be greatly enhanced by optical clearing both in vitro...

Tissue optical clearing technique provides a prospective solution for the application of advanced optical methods in life sciences. This paper gives a review of recent developments in tissue optical clearing techniques. The physical, molecular and physiological mechanisms of tissue optical clearing are overviewed and discussed. Various methods for enhancing penetration of optical-clearing agent...

Land cover plays a major role in many biogeochemical models that represent processes and connections with terrestrial systems; hence, it is a key component for public decisions in ecosystems management. The advance of remote sensing technology, combined with the emergence of new operational products, offers alternatives to improve the accuracy of environmental monitoring and analysis. This work...

A f r a m e w o r k f o r m o d e l i n g a n d r e c o g n i t i o n o f t e m p o r a l a c t i v i t i e s is proposed . T h e m o d e l i n g o f s e t s o f e x e m p l a r a c t i v i t i e s is ach ieved by p a r a m e t e r i z i n g t h e i r r e p r e s e n t a t i o n in t h e f o r m o f p r i n c i p a l c o m p o n e n t s . R e c o g n i t i o n o f s p a t i o t e m p o r a l v ...