Article originally published in Banca Nazionale del Lavoro Quarterly Review, vol.19 n.77, June 1966, pp.99-120.The work provides a first appraisal of the contribution that econometric models can make to long-run economic policy.Rather than a detailed exposition or critique of the individual models, a more general analysis is provided.The author fir
Discrete sine transform (DST) is widely used in digital signal processing such as image coding, spectral analysis, feature extraction, and filtering.This is because the discrete sine transform is close to the optimal Karhunen–Loeve transform for first-order Markov stationary signals with low correlation coefficients.Short-time (hopping) disc
Currently, using semantic segmentation networks to distinguish dynamic and static key points has become a mainstream designing method for semantic SLAM systems.However, the semantic SLAM systems must have prior semantic knowledge of relevant dynamic jake wire tighteners objects, and their processing speed is inversely proportional to the recognitio
Rich surface water resources in south China can be utilized as heat source-sink for heat pump systems.A district heating and cooling system that utilizes lake water as heat source-sink of heat pumps has been constructed in Xiangtan,a city in Hunan province coastal clouds vanilla custard in south China.The lake water temperature distribution during
N-Dodecyloxymethylene-N-methylpiperidinium chloride (DMMP) and N-dodecyloxyme-thylene-N-methylmorpholinium chloride (DMMM) retarded germination of seeds of 9 ut solution gel for cats cultivated plant species when applied at a concentration of 10-3 M, and inhibited germination at a concentration of 10-2 M.The exceptions were represented by Lepidium