Developments in Agricultural Economic Extension Work

1931 ◽  
Vol 13 (1) ◽  
pp. 87
Author(s):  
C. B. Smith
Keyword(s):  
Agricultural Economic ◽  
Extension Work

scholarly journals Agricultural Support Policies and China’s Cyclical Evolutionary Path of Agricultural Economic Growth

2021 ◽  
Vol 13 (11) ◽  
pp. 6134
Author(s):  
Xiangdong Guo ◽  
Pei Lung ◽  
Jianli Sui ◽  
Ruiping Zhang ◽  
Chao Wang
Keyword(s):  
Agricultural Economic ◽  
Agricultural Development ◽  
Animal Husbandry ◽  
Agricultural Policies ◽  
Growth Trend ◽  
Agricultural Economy ◽  
Growth Status ◽  
Growth Regime ◽  
Agricultural Support

Due to the weak nature of agricultural production, governments usually adopt supportive policies to protect food security. To discern the growth of agriculture from 2001 to 2018 under China’s agricultural support policies, we use the nonlinear MS(M)-AR(p) model to distinguish China’s agricultural economic cycle into three growth regimes—rapid, medium, and low—and analyze the probability of shifts and maintenance among the different regimes. We further calculated the average duration of each regime. Moreover, we calculated the growth regime transfers for specific times. In this study, we find that China’s agricultural economy has maintained a relatively consistent growth trend with the support of China’s proactive agricultural policies. However, China’s agricultural economy tends to maintain a low-growth status in the long-term. Finally, we make policy recommendations for agricultural development based on our findings that continue existing agricultural policies and strengthen support for agriculture, forestry, and animal husbandry.

scholarly journals Using of Microsilica for Strength Improvement of Fiber Reinforced Cementitious Surface Compounds

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
S. S. Shebl ◽  
Ibrahim S. Khalil ◽  
H. Shoukry
Keyword(s):  
Date Palm ◽  
Fine Sand ◽  
Structural Performance ◽  
Polypropylene Fibers ◽  
Hydration Products ◽  
Fiber Reinforced ◽  
Surface Compounds ◽  
Extension Work ◽  
Strength Improvement

This study represents an extension work to investigate the role of ultra fine sand (UFS) in enhancing the mechanical properties of fiber reinforced cementitious compounds. The micro-structural origins were identified by scanning electron microscope (SEM). About 50% of UFS had a diameter of less than 20 μm. Ordinary Portland Cement (OPC) was partially substituted by UFS at 3, 5, 7 and 10% by weight of binder. It was found that as UFS loadings increase, the flexural, compressive, and tensile strengths increased up to about 5% UFS loading by 12.9, 15.7 and 30.1%, respectively, thereafter, a decrease in these properties was observed. This can be attributed to the pozzolanic effect besides the filling effect of UFS resulting in enhancing the interfacial bonds between the sand grains and hydration products that makes the paste more homogeneous and dense. The effect of both short natural and artificial fiber loadings on the structural performance of compounds was also studied. Loadings of 2%, by weight, of short natural date palm leaves’ midribs fibers (DP) and artificial polypropylene fibers (PP) were added to the 5% UFS blended mix. An increase in both flexural and tensile strength was achieved, while a decrease in the compressive strength was observed.

Agricultural Economic History

1926 ◽  
Vol 16 (3) ◽  
pp. 514
Author(s):  
O. C. Stine ◽  
H. C. Taylor ◽  
R. T. Ely ◽  
P. W. Bidwell ◽  
J. I. Falconer ◽  
...  
Keyword(s):  
Agricultural Economic ◽  
Economic History
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