The widespread use of Twitter makes it very interesting to determine the opinions and the sentiments expressed by its users. The shortness of the length and the highly informal nature of tweets render it very difficult to automatically detect such information. This paper reports the results to a challenge, set forth by SemEval-2013 Task 2, to determine the positive, neutral, or negative sentime...

Fish predation interferes with mussel seed population dynamic and is an important limiting factor on seed supply in several areas of mussel farming production. In the present study we assessed the impact of fish predation in a mussel farm sited in the Rıa de Ares-Betanzos (Galicia, NW Spain). To assess fish impact on recruitment, we have quantified mussel recruitment densities with or without e...

to compute the optic flow along intensity change curves. The flow is computed locally at corners, determined as edge points of high curvature, by cross correlation over time. The (full) flow is then computed along edge contours by means of a combined wave/diffusion process. MCMAP has been implemented on a Transputer array using a mixed paradigm of a pipeline and a processor farm. A fast algorit...

Clock-related operations are one of the many sources of replica non-determinism and of replica inconsistency in fault-tolerant distributed systems. In passive replication, if the primary server crashes, the next clock value returned by the new primary server might have actually rolled back in time, which can lead to undesirable consequences for the replicated application. The same problem can h...

A farm operator household time-allocation model and data from the Farm Costs and Returns Survey and from other sources were used to derive off-farm wage equations for U.S. farm operators based on production region, size of farm, and farm type. These equations, in turn, were used to impute opportunity costs for farm operators' unpaid labor. Using this new method, instead of the ad hoc method of ...

Abstract The historical contribution of agriculture to human-induced climate change is indisputable; the removal natural vegetation and soil cultivation feed growing human population has resulted in a substantial carbon transfer atmosphere. While maintaining their food production capacity, soft fruit systems now have an opportunity utilise recent technology enhance sequestration capacity. We us...

Using data from a national survey of farm households in the United States, this paper examines the effects of farm households’ decisions to participate in the Conservation Reserve Program (CRP) and to work off the farm on the technical efficiency of farm household production. After controlling for the self selection bias in estimating the multiple output-oriented distance functions, results sho...

The farm machinery statistics is an important task of the farm machinery management, the statistics of farm machinery in Jiangsu Province are very wide. Improving the working of statistical analyses by advanced computer technology, enhancing the efficiency, is a topic which the farm machinery superintendent and the scientific and technical worker explore continuously. The present situation of t...