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This paper revisits the role of land measurement error in the inverse farm size and productivity relationship. By making use of data from a nationally representative household survey from Uganda, in which self-reported land size information is complemented by plot measurements collected using Global Position System devices, the authors reject the hypothesis that the inverse relationship may just be a statistical artifact linked to problems with land measurement error. In particular, the paper explores: (i) the determinants of the bias in land measurement, (ii) how this bias varies systematically with plot size and landholding, and (iii) the extent to which land measurement error affects the relative advantage of smallholders implied by the inverse relationship. The findings indicate that using an improved measure of land size strengthens the evidence in support of the existence of the inverse relationship.

Communities & Human Settlements --- E-Business --- Inverse Farm Size Productivity Relationship --- Land Measurement Error --- Land Use and Policies --- Poverty Reduction --- Regional Economic Development --- Rural Development Knowledge & Information Systems --- Rural Land Policies for Poverty Reduction --- Uganda

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• Reference Manager
• EndNote
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This paper revisits the role of land measurement error in the inverse farm size and productivity relationship. By making use of data from a nationally representative household survey from Uganda, in which self-reported land size information is complemented by plot measurements collected using Global Position System devices, the authors reject the hypothesis that the inverse relationship may just be a statistical artifact linked to problems with land measurement error. In particular, the paper explores: (i) the determinants of the bias in land measurement, (ii) how this bias varies systematically with plot size and landholding, and (iii) the extent to which land measurement error affects the relative advantage of smallholders implied by the inverse relationship. The findings indicate that using an improved measure of land size strengthens the evidence in support of the existence of the inverse relationship.

Communities & Human Settlements --- E-Business --- Inverse Farm Size Productivity Relationship --- Land Measurement Error --- Land Use and Policies --- Poverty Reduction --- Regional Economic Development --- Rural Development Knowledge & Information Systems --- Rural Land Policies for Poverty Reduction --- Uganda

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• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Mathematics in Ancient Egypt traces the development of Egyptian mathematics, from the end of the fourth millennium BC-and the earliest hints of writing and number notation-to the end of the pharaonic period in Greco-Roman times. Drawing from mathematical texts, architectural drawings, administrative documents, and other sources, Annette Imhausen surveys three thousand years of Egyptian history to present an integrated picture of theoretical mathematics in relation to the daily practices of Egyptian life and social structures.Imhausen shows that from the earliest beginnings, pharaonic civilization used numerical techniques to efficiently control and use their material resources and labor. Even during the Old Kingdom, a variety of metrological systems had already been devised. By the Middle Kingdom, procedures had been established to teach mathematical techniques to scribes in order to make them proficient administrators for their king. Imhausen looks at counterparts to the notation of zero, suggests an explanation for the evolution of unit fractions, and analyzes concepts of arithmetic techniques. She draws connections and comparisons to Mesopotamian mathematics, examines which individuals in Egyptian society held mathematical knowledge, and considers which scribes were trained in mathematical ideas and why.Of interest to historians of mathematics, mathematicians, Egyptologists, and all those curious about Egyptian culture, Mathematics in Ancient Egypt sheds new light on a civilization's unique mathematical evolution.

Mathematics, Egyptian. --- Mathematics --- Math --- History. --- Science --- Abusir papyri. --- Egyptian history. --- Egyptian mathematics. --- Egyptian number system. --- Fifth Dynasty. --- Greco-Roman Period. --- Harris I. --- King Scorpion. --- Late Egyptian Miscellanies. --- Maat. --- Mesopotamia. --- Middle Kingdom. --- New Kingdom. --- Old Kingdom. --- Papyrus Anastasi I. --- Papyrus Harris I. --- Papyrus Wilbour. --- Senmut 153. --- Turin 57170. --- Wilbour Papyrus. --- administration. --- ancient Egypt. --- ancient mathematics. --- architectural calculations. --- area units. --- arithmetic techniques. --- arithmetic. --- capacity units. --- cultural environment. --- daily life. --- decimal system. --- demotic mathematical texts. --- experts. --- fractions. --- funerary context. --- hieratic mathematical texts. --- historiography. --- inverse. --- king. --- land measurement. --- length units. --- literary texts. --- mathematical education. --- mathematical problems. --- mathematical procedure texts. --- mathematical techniques. --- mathematical texts. --- metrological tables. --- metrology. --- number notation. --- number system. --- numbers. --- ostraca. --- pharaonic history. --- place-value. --- rations. --- scribal culture. --- scribes. --- tomb U-j. --- unit fractions. --- weights. --- writing. --- zero.