We explore an economy where number of children is endogenously determined and the cost of raising children is determined by the total number of children in the economy. We show that number of children will be too small compared to the social optimum and that the network effect may magnify the decline of “birthrate”. Our analysis demonstrates that public policies to increase birthrate must take ...

Denitrification and nitrification in sediments of Tama Estuary and Odawa Bay, Japan, were investigated by the combined use of a continuous-flow sediment-water system and a N tracer technique. At Odawa Bay, the nitrification rate was comparable to the nitrate reduction rate, and 70% of the N(2) evolved originated from nitrogenous oxides (nitrate and nitrite) which were produced by the action of ...

The ability of intestinal microorganisms to N-oxidize nitrogenous compounds to nitrite or nitrate was evaluated both in vivo and in vitro. Nitrate balance studies with germ-free and conventional rats indicated that the host and not the microbial flora is responsible for excess urinary nitrate. In vitro studies showed that most intestinal microorganisms are not able to N-oxidize nitrogenous comp...

Growth of the ornamental fish industry is being hindered by the scarcity of low cost feed; hence alternative protein supplements should be explored. In this context the present study aims to evaluate whether the grasshopper Oxya fuscovittata could be used as a supplement for fish meal in the diets of Poecillia sphenops, which is one of the most common ornamental fishes worldwide. The present wo...

An experiment was carried out to investigate the effects of different dietary levels of energy on growth performance and meat yields of indigenous (desi) chickens up to the target weight of 950 g in rural condition. One hundred indigenous unsexed chicks aged 4 weeks were considered for the feeding trial until the body weight reached at 950g. Chicks were divided into two dietary treatments havin...

introduction: providing high quality care in emergency room is highly critical. this research was planned to compare emergency room standards of the iranian ministry of health with those of iso9001 (version 2000) method: this descriptive study compared iso 9001 standards with items listed in booklet- a1 (iranian ministry of health standards for emergency departments). expert views were sought f...

The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP (STandard for the Exchange of Product model data). Subsequent Technical Notes discussed various issues faced by users of STEP and how the ISO TC184/SC4 committee is addressing these issues. This paper presents the current move to modularize the STEP application protocol architec...

ii Acknowledgements First, I would like to thank professors Paola Mello and Evelina Lamma for their gentle guidance, keen advice and patience. Their support and incitement have been fundamental for overcoming the most diicult times. I am grateful to professor Maurelio Boari for his uninterrupted encouragement, for creating a fertile environment for doing research and for having ooered me the op...

For example, the escape sequence "ESC 2/4 2/8 4/3" or "ESC $ ( C" indicates that the bytes following the escape sequence are Korean KSC characters, which are encoded in two bytes each. The escape sequence "ESC 2/14 4/1" or "ESC . A" indicates that ISO 8859-1 is designated to G2. After the designation, the single shifted sequence "ESC 4/14 4/1" or "ESC N A" is interpreted to represent a characte...