Results 111 to 120 of about 264,467 (229)

Fertility in the Democratic Republic of Congo [PDF]

open access: yes
In this paper we examine and discuss estimates of fertility in the Democratic Republic of the Congo (DRC). Currently, the United Nations estimates that the country's total fertility rate is 6.7, and national sources provide an even higher estimate of 7.3.
Shapiro, David, Tambashe, B. Oleko
core  

Linear Temperature Variation of the Penetration Depth in YBCO Thin Films

open access: yes, 1995
We have measured the penetration depth $\lambda(T)$ on $\rm YBa_{2}Cu_{3}O_{7}$ thin films from transmission at 120, 330 and 510~GHz, between 5 and 50~K. Our data yield simultaneously the absolute value and the temperature dependence of $\lambda(T)$.
Beasley M. R.   +9 more
core   +1 more source

Farmers' preferences for eco-friendly nets as an alternative to insecticides in Africa [PDF]

open access: yes, 2014
Vegetable production in Africa is highly dependent on pesticides with a large proportion of the population involved in farming. We investigate if eco-friendly nets (EFNs) are a viable and accepted alternative to farmer's current practice of extreme use ...
Adegbidi, Anselme   +8 more
core  

The Q theory of investment under unit root tests [PDF]

open access: yes, 1992
We test a q investment model for Belgium using a multivariate cointegration approach. The introduccion of the degree of capacity utilization duc, in addition to investment and average q, is necessary to determine the cointegration space. This support the
Croix, David de la, Licandro, Omar
core   +1 more source

Measuring trade in value added in the new industrial economy: statistical implications [PDF]

open access: yes
Vertical integration of production processes at international level and the resulting fragmentation of the value chains increasingly question the relevance of traditional trade indicators.
Escaith, Hubert
core   +1 more source

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