the main objective of this study was to determine the economical level of inputs applied in production of sugar beet by eglid region farmers. therefore data set was obtained from 55 farmers through interview and completing questionnaire. the farmers were selected based on a two-stage random sampling method.  marginal productivity of inputs was studied using cobb –douglasand transendental produc...

the energy efficiency, greenhouse gas (ghg) emissions, and carbon efficiency of paddy rice production were analysed in sari in the mazandaran province of iran during 2011–2012. data was collected through questionnaires and interviews with paddy producers. the results showed that the net energy gain was 27,932 mj ha-1 and energy efficiency was 1.83 during production. the results of the cobb-doug...

There have been many automated geometry theorem provers since Gelernter’s 1964 prover discovered a proof of the ‘Pons Asinorum’ not previously known to the developer. But they all start with logic-based formulations of Euclid’s axioms, postulates, etc. (e.g. using David Hilbert’s axiomatization, and assuming the Cartesian coordinate representation of geometry). But that is not how the ancient m...

In order to improve the prediction accuracy of agricultural machinery total power then to provide the basis for the agricultural mechanization development goals, the paper used gray GM(2,1) model in the prediction. Through the introduction of parameter λ to correct the background value and parameter ρ for multiple transformation on the initial data, the model was expanded to (2,1, , ) GM λ ρ mo...

Senior Research Proposal 11-1-2000 Abstract Alan Turing’s landmark paper “Computing Machinery and Intelligence” proposed a famous test of machine intelligence: the ability to imitate human conversation. In the 50 years since the publication of Turing’s paper, the fields of Artificial Intelligence and Natural Language Processing have made great advances, and yet no program has ever successfully ...

Evolutionary processes can interact with the mechanisms of steroid hormone action to drive interspecific variation in behavioural output, yet the exact nature of these interactions is poorly understood. To investigate this issue, we compare the endocrine machinery underlying the winner effect (an ability to increase winning behaviour in response to past victories) in two closely related species...

In recent years, there has been a sharp increase in interest using satellite imagery agriculture. These images are useful for monitoring crops, analyzing soil conditions, and identifying potential machine problems. However, the quality of these can vary greatly depending on factors such as weather time day, type used. One common problem with images, general, is poor contrast or lack contrast, w...

Transcription factors play an important role in orchestrating the activation of specific networks of genes through targeting their proximal promoter and distal enhancer regions. However, it is unclear how the specificity of downstream responses is maintained by individual members of transcription-factor families and, in most cases, what their target repertoire is. We have used ChIP-chip analysi...

This paper estimates the impact of grassland transfer on technical efficiency livestock production, using cross-sectional data collected from herders in Northern China. The propensity score matching approach and selectivity-corrected stochastic production frontier model are employed to address selection bias issues. empirical results show that, average, average with is significantly higher than...

Working bodies of agricultural machinery and equipment are operated in harsh conditions. Mulching cutters shred various types vegetation, including stumps, trees, bushes, their roots mix wood residues with soil, which acts as an abrasive. Therefore, great attention is paid to the scientifically based selection materials for manufacture working parts mulching cutter. This study presents a system...