Sohini Roy Chowdhury

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IMPORTANCE We observed a significant correlation between cerebrospinal fluid (CSF) levels of tau proteins and α-synuclein, but not β-amyloid 1-42 (Aβ1-42), and lower concentration of CSF biomarkers, as compared with healthy controls, in a cohort of entirely untreated patients with Parkinson disease (PD) at the earliest stage of the disease studied so far.(More)
The development of biomarkers to predict the progression of Parkinson's disease (PD) from its earliest stage through its heterogeneous course is critical for research and therapeutic development. The Parkinson's Progression Markers Initiative (PPMI) study is an ongoing international multicenter, prospective study to validate biomarkers in drug-naïve PD(More)
Prediction of epidemics such as Foot and Mouth Disease (FMD) is a global necessity in addressing economic, political and ethical issues faced by the affected countries. In the absence of precise and accurate spatial information regarding disease dynamics, learning-based predictive models can be used to mimic latent spatial parameters so as to predict the(More)
Currently many commercial buildings are not continuously monitored for energy consumption, especially small buildings which constitute 90% of all such buildings. However, readily available data from the electric meters can be used for monitoring and analyzing energy consumption. Efficient utilization of available historical data (from these meters) can(More)
In this paper we build a model of market competition among religious denominations, using a framework that involves incomplete contracts and the production of club goods. We treat denominations akin to multinational enterprises, which decide which countries to enter based on local market conditions and their own " productivity. " The model guides us in(More)
In this paper I construct product-level U.S.-manufacturing-imports data for new products. I show that consistent with product cycles, the North's new-products exports to the U.S., relative to its old-products exports, grow faster than the South's for over a decade, and then the South catches up with the North and this pattern is reversed. This finding holds(More)
BACKGROUND Fox Trial Finder is an online registry for individuals with and without Parkinson disease (PD) interested in participating in PD research. However, distance or disability could prevent such individuals from participating in traditional, clinic-based research at major centers. OBJECTIVE Use videoconferencing to connect participants to(More)
This paper evaluates the distortions from specific tariffs levied on agricultural imports by rich countries. Through their non-MFN advalorem equivalents (AVEs), specific tariffs discriminate against exports from poor countries because of the lower price of their exports. So the MFN specific tariffs levied by rich WTO member countries essentially translate(More)
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