Crow Algorithm for Irrigation Management: A Case Study

Water Resources Management - This study employed a new evolutionary algorithm namely, the crow algorithm (CA), to optimize reservoir operation and minimize irrigation water deficit. Comprehensive...     

Numerical Study of the Dynamics and Structure of a Partial Dam-Break Flow Using the VOF Method

Water Resources Management - This paper aims to evaluate the effects of the opening width of a dam site on the evolution of partial dam-break waves over a fixed dry bed. The volume of fluid (VOF)...     

The impact of the acreage allotment program on rice farming

This paper designs an acreage response model under the acreage allotment farm program incorporation a policy-inducing variable. The single-equation regression model for each rice-producing state is estimated by the ordinary least squares mulitiple regression procedure. The estimated parameter shows a significant direct relationship between the rice acreage planted and plicy-inducing price in all the rice-growing states. The estimated short-run elasticities for Arkansas, California, Louisiana, Mississippi, and Texas were 0.72, 0.59, 0.67, 0.66, and 0.81 respectively. The heterogeneity in the magnitude of the elasticities during the acreate allotment period suggests considering a rice program formulation in response to each state's variability in physical restraints, availability of irrigation water, average yields, and return over cost, thereby providing risk management incentives to rice growers to respond positively to the farm program.     

A New Integrated Portfolio Based Water-Energy-Environment Nexus in Wetland Catchments

Water Resources Management - Increasing demand of vital resources such as water and energy will impose some overwhelming environmental degradation, particularly on wetlands as the most vulnerable...     

The impact of monetary and tax policy on income inequality in Japan

This paper assesses the effects of the most recent monetary policy behaviour of the Bank of Japan (in particular, zero interest rate policy and negative interest rate policy) and Japanese tax policy on income inequality in this country during the period of 2002Q1 to 2017Q3. The vector error correction model (VECM) that develops in this research shows that increase in money stock (m1) through Quantitative Easing (QE) and Quantitative and Qualitative Easing (QQE) policies of the BOJ significantly increases the income inequality. On the contrary, Japanese tax policy was effective in reducing the income inequality. Variance decomposition results show that increasing of income inequality by monetary policy is larger when comparing to decreasing effects of tax policy on income inequality. Cointegration and VECM results show that monetary policy has both short-run and long-run impacts but for tax policy paper could not find any significant short-run impact on income inequality. In addition, paper found that technological progress only in long-run can reduce the income inequality by increasing the marginal productivity of labour with positive impacts on employment and wages.     

Riprap Effect on Hydraulic Fracturing Process of Cohesive and Non-cohesive Protective Levees

A comprehensive experimental study was conducted to evaluate the effects of soil properties and the rip-rap as well as cohesive and non-cohesive soil material and the riprap particle size on the breaching process and the failure mechanism of the levee. The results showed the crucial role of the riprap coverage and the soil properties in the breaching of the protective levees. In this regard, breaching was developed in both vertical and transverse directions. In the levee without riprap coverage, breach development was observed in the transverse direction while the levee was eroded in the streamwise direction. In contrast, in the levee with riprap coverage, breach development mainly occurred in the vertical direction. Furthermore, the flow rate across the breach was higher in the tests with no riprap compared to those with the riprap coverage. Comparisons suggested that the shorter the failure time, the longer the equilibrium time. The present research has some major implications for coastal and hydraulic engineering designs since the construction of levees is of great importance. Furthermore, the findings can be used to predict flooding and erosion induced by the embankment failure.

     

Measuring Factor Abundance Across Many Factors and Countries

Empirical studies of factor proportion theory face the challenge of measuring factor abundance in a world with many factors of production and countries. This paper introduces a mean weighted measure of factor abundance, and using data for nine factors and 33 countries, presents the resulting factor abundance rankings. These rankings, unlike others in the literature, are quite sensible. Further, there is a positive empirical link between factor abundance and factor content for each factor except agricultural labor.     

Brand name recall: A study of the effects of word types,processing, and involvement levels

This study extends prior research on brand naming by comparing recall for five types of words in various involvement and processing conditions. Experimental findings show that the differences in recall are higher when there is semantic processing than when there is sensory processing. Involvement is not significant and hence provides no advantage for brand name recall. Several significant interactions among word types and information processing are also observed that extend prior findings in marketing and branding. More specifically, the results showed different recall pattern for the word types between semantic and sensory processing which was not observed in academic literature. Finally, the paper discusses implications for the naming of new products.