Planting the evidence
نویسندگان
چکیده
منابع مشابه
Rational Expectations? Evidence from Planting Decisions in Semi-Arid India
The optimal time to plant in rainfed semi-arid India is at the onset of the monsoon. While planting too early may result in losses because the seeds may not germinate if the first rains are not followed by subsequent rains, postponing planting for too long is also costly, because yield will typically be lower. Given that mistakes about the precise timing of the monsoon are costly, in this paper...
متن کاملPlanting ldeas in the Schools
Our review (Coen and Carpenter, 1993) describes how both the similarities and differences between flowers and shoots can be explained by the action of a set of genes modifying a common growth plan. This does not imply that flowers and shoots are directly derived from one another or that they serve the same function or that they express all of the same genes. We would also like to point out that...
متن کاملOn the Elasticity of Effort for Piece Rates: Evidence from the British Columbia Tree-Planting Industry
Ce document est publié dans l'intention de rendre accessibles les résultats préliminaires de la recherche effectuée au CIRANO, afin de susciter des échanges et des suggestions. Les idées et les opinions émises sont sous l'unique responsabilité des auteurs, et ne représentent pas nécessairement les positions du CIRANO ou de ses partenaires. This paper presents preliminary research carried out at...
متن کاملPlanting Healthier Indoor Air
Poor indoor air quality has been linked to health problems, especially in children. Asthma has reached epidemic proportions among multiple age groups and is considered the most common chronic disease in urban-dwelling children. The American Academy of Allergy, Asthma and Immunology Indoor Allergen Committee suggested in a 2010 report that allergists consider indoor air filtration to be part of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1999
ISSN: 0028-0836,1476-4687
DOI: 10.1038/44459