spatial patterns of soil fertility parameters, and other extrinsic factors need to be iden-tified to develop farming practices that match agricultural inputs with local crop needs. little is known about the spatial structure of yield and weed density across fields. in this study, geostatistics was used to describe and map spatial patterns of soil total nitrogen, available phosphorus, available ...

Previous studies have shown that neurons in area V4 are involved in the processing of shapes of intermediate complexity and are sensitive to curvature. These studies also suggest that curvature-tuned neurons are position invariant. We sought to examine the mechanisms that endow V4 neurons with these properties. Consistent with previous studies, we found that response rank order to the most- and...

The innate immune system provides defence against parasites and pathogens. This defence comes at a cost, suggesting that immune function should exhibit plasticity in response to variation in environmental threats. Density-dependent prophylaxis (DDP) has been demonstrated mostly in phase-polyphenic insects, where larval group size determines levels of immune function in either adults or later la...

trauma and stressor related disorders include disorders in which exposure to a traumatic or stressful event is listed explicitly as a diagnostic criterion. these include reactive attachment disorder, posttraumatic stress disorder (ptsd), acute stress disorder, and adjustment disorders. psychological distress following exposure to a traumatic or stressful event is quite variable. in some cases, ...

Title of dissertation: SPATIALLY HETEROGENEOUS DYNAMICS AND STRING-LIKE CORRELATED MOTION IN SUPERCOOLED LIQUIDS AND POLYMERS Yeshitila Gebremichael, Doctor of Philosophy, 2004 Dissertation directed by: Professor Sharon C. Glotzer Chemical Engineering Department University of Michigan, Ann Arbor, MI Professor John D. Weeks Chemical Physics Program University of Maryland, College Park, MD Dense ...

The study aims to examine the spectral dynamics of low-frequency, optically thick gyrosynchrotron microwave emission in solar flares determine characteristics emitting source. We present high-resolution spectra a set bursts observed by Expanded Owens Valley Solar Array (EOVSA) during its commissioning phase $2.5-18$ GHz frequency range with $1$ second time resolution. Out 12 events analyzed thi...

political attitudes of bureaucrats and their impact on performance have been one of the most important debates in public administration that have been studied in dichotomy of politics-administration. in this article, we examine the effect of political attitudes of bureaucrats on their organizational citizenship behavior (ocb). the results show that political attitudes have a significant correla...