Cultivation of cereals by the first farmers was not more productive than foraging

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Cultivation of cereals by the first farmers was not more productive than foraging.

Did foragers become farmers because cultivation of crops was simply a better way to make a living? If so, what is arguably the greatest ever revolution in human livelihoods is readily explained. To answer the question, I estimate the caloric returns per hour of labor devoted to foraging wild species and cultivating the cereals exploited by the first farmers, using data on foragers and land-abun...

متن کامل

More than One Hundred Years after It Was First Discovered by Carlos Ribeiro Justiniano

Chagas, the disease bearing his name remains one of the most neglected topical diseases in the world. Trypanosoma cruzi, the causative agent of Chagas disease, is a protozoan parasite which has become unable to synthesize purines and pteridines instead salvaging them from its human host. It is mainly transmitted by the feces of the Kissing bug, but it is also spread by organ transplant, blood t...

متن کامل

More likely than not

The likelihood ratio method [BG96] provides a tool for the calculation of hedge ratios and risk parameters with Monte Carlo calculations. In this article, we present the extension of existing likelihood ratio methods to multiple underlyings and to higher order sensitivities such as the crossderivatives on the underlyings, and how the method can be used in a displaced diffusion [Rub83] framework...

متن کامل

Constraints faced by the farmers in commercial cultivation of vegetables

The study was conducted to determine the constraints faced by the farmers in commercial cultivation of vegetables and to explore relationship between the selected characteristics of the farmers and constraints faced by them. Data were collected through personal interview from 142 randomly selected respondents out of 1422 vegetable growers of the three villages viz. Panchpara, Bagan and Rampur, ...

متن کامل

The Neolithic Transition in the Baltic Was Not Driven by Admixture with Early European Farmers

The Neolithic transition was a dynamic time in European prehistory of cultural, social, and technological change. Although this period has been well explored in central Europe using ancient nuclear DNA [1, 2], its genetic impact on northern and eastern parts of this continent has not been as extensively studied. To broaden our understanding of the Neolithic transition across Europe, we analyzed...

متن کامل

ذخیره 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: Proceedings of the National Academy of Sciences

سال: 2011

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.1010733108