Based on the Partial Distribution [F. Dai, 2001] and the theory of Development Power [F. Dai, 2004], this paper discusses the power model of relation between development power (DP) and productivity. The power model also supports the hypothesis [F. Dai, 2005] that there are three kinds of energy...

Traveling salesman problem is a fundamental combinatorial optimization model studied in the operations research community for nearly half a century, yet there is surprisingly little literature that addresses uncertainty and multiple objectives in it. A novel TSP variation, called uncertain...

Taking the grape theme sightseeing garden of Hebei Academy of Forestry Sciences for example, this article discusses the suitable edible and wine making cultivation varieties, vineyard frame and cultivation techniques in the grape theme sightseeing garden, from the perspective of planning and...

Cycle-by-cycle variations in some parameters of the combustion and performance during a dual-fuel premixed charge compression ignition (PCCI) combustion process were investigated on a modified direct injection diesel engine with dimethyl ether (DME) as premixing fuel. Experiments were conducted...

In this study, effects of DME (dimethyl ether) pre-mixing ratio and cooled external EGR (exhaust gas recirculation) rate on combustion, performance and emission characteristics of a DME-diesel dual fuel PCCI (premixed charge compression ignition) engine were investigated in a 2105 engine. PCCI...

This paper attempts to explore the effectiveness of the seller reputation mechanism by an empirical study using online sales data collected from TaoBao.com. A comparison analysis of seller reputation metrics of TaoBao, Amazon, and jd are carried out before the selection of the seller reputation...

Irrigation water availability is a main driver which determines cropping patterns for an irrigation area. Irrigation water availability will potentially reduce due to changes in climate and irrigation extraction limits. Cropping patterns should be adjusted to meet this challenge. This study...

This paper examines mutual fund managers' ability to time market-wide liquidity. Using the CRSP mutual fund database, we find strong evidence that over the 1974–2009 period, mutual fund managers demonstrate the ability to time market liquidity at both the portfolio level and the individual...

Past research has suggested that the acceptance concern of lesbians, gays and bisexuals (LGB), defined as LGB individuals’ sensitivity to negative judgement and rejection associated with their sexuality, is negatively related to subjective wellbeing. However, the mechanism underlying this...