... performed only on the observations whose propensity score belongs to the intersection of the supports of the propensity score of treated and controls. Imposing the common support condition in the estimation ... upon request). Assessing the Conditional Independence Assumption An identifying assumption of the matching method, namely CIA, requires that conditional on...
Ngày tải lên: 12/02/2014, 11:20
... MekongDelta.Thissituation isapressure on suburbanfarmers in keeping agricultural production[6]. Accordingto the investigation of Institute of Economic Research in June 1996, the number of farmers owned the ... biggestindustrial andcommercialcenter of the country.Accordingto the statistics in 2005,itspopulationwasabout 6.2millionpeople. In the suburb...
Ngày tải lên: 14/03/2014, 15:20
A CFD analysis on the effect of ambient conditions on the hygro-thermal stresses distribution in a planar ambient airbreathing PEM fuel cell
... are introduced into the unit cell during operation. In addition, the non-uniform current and reactant flow distributions in the cell result in non-uniform temperature and moisture content of the ... dehumidification of the membrane may occur, resulting in deterioration of protonic conductivity, increasing resistive losses, and increasing MEA temperature. In the...
Ngày tải lên: 05/09/2013, 14:58
Indoor tests to investigate the effect of brine depth on the performance of solar still
... (in the case of the indoor tests) evaporates the water. After evaporation, it leaves all contaminants and microbes behind in the basin. The evaporated and now purified water condenses on the ... considerable attention in the literature is the brine depth. This paper reports indoor experimental investigations on the effect of brine depth on the product...
Ngày tải lên: 05/09/2013, 16:10
The effect of EGR rates on NOX and smoke emissions of an IDI diesel engine fuelled with Jatropha biodiesel blends
... emission increased with increasing biodiesel amount in the blends. More amount of CO 2 in the exhaust emission is an indication of complete combustion of fuel [13,21]. The CO 2 emission of DF increased ... First one is the decrease in combustion work (i.e. indicated work), and another reason is the increase in pumping work (assuming that friction remained const...
Ngày tải lên: 05/09/2013, 16:11
The effect of using light and darkness expressions in symbolism in english literature
... -dazzling: confusingly bright. -flaming: glowing brightly. -flashing: shining suddenly. -glaring: shining oppressively -glistening: sparkling. -glittering: glistening -radiant: shining or glowing ... shines very strongly and brightly. And that light is used by Coffin to have the figurative meaning as the passionate love of the father. After reading all the concrete details of t...
Ngày tải lên: 22/12/2013, 12:59
Tài liệu The effect of economic growth on my city pdf
... Another effect is the development of economy is nonstop and it creats the condition of farmland is less and less., because of the need building houses,, public services, and the opening of industrial ... major effects of economic growth, that are the urban expansion, and the improvement of living standard. The first effect of economic growth is urbanizati...
Ngày tải lên: 18/01/2014, 07:20
Tài liệu Báo cáo " The effect of cobalt substitution on structure and magnetic properties of nickel ferrite " pptx
... doping yields monotonic increase in the saturation magnetization of Ni- ferrite which may be due to the substitution of Ni 2+ ions by Co 2+ on the octahedral sties. Therefore, the increasing ... g/cm 3 ). The obtained XRD patterns of the Ni-Co ferrites are shown in Fig.1. Consequently, one can obtain the average particle size, from the broadening effect of t...
Ngày tải lên: 13/02/2014, 04:20
Tài liệu Báo cáo khoa học: "The Effect of Pitch Accenting on Pronoun Referent Resolution" ppt
... especially the cases in which it alters the predictions of centering theories. I investigate this via a phenomenon that, by the strictest interpretation of either centering or intonation theories, ... optional leading or trailing tone. The form of the accent L, H, L+H or H+L informs about the operation that would relate the salient item to the mutual beliefs 1...
Ngày tải lên: 20/02/2014, 22:20