Zobrazeno 1 - 10
of 124
pro vyhledávání: '"David R Braun"'
Autor:
Hilary J Bethancourt, Zane S Swanson, Rosemary Nzunza, Sera L Young, Luke Lomeiku, Matthew J Douglass, David R Braun, Emmanuel K Ndiema, Herman Pontzer, Asher Yoel Rosinger
Publikováno v:
Public Health Nutrition, Vol 26, Pp 693-703 (2023)
Abstract Objective: Water plays a critical role in the production of food and preparation of nutritious meals, yet few studies have examined the relationship between water and food insecurity. The primary objective of this study, therefore, was to e
Externí odkaz:
https://doaj.org/article/2c13f050af094d07be73819b2d768c1c
Autor:
Sam C Lin, Zeljko Rezek, Aylar Abdolahzadeh, David R Braun, Tamara Dogandžić, George M Leader, Li Li, Shannon P McPherron
Publikováno v:
PLoS ONE, Vol 17, Iss 1, p e0262920 (2022)
To understand the ways in which past stone knappers controlled the morphology of the flakes they produced, archaeologists have focused on examining the effects of striking platform attributes on flake size and shape. Among the variables commonly cons
Externí odkaz:
https://doaj.org/article/90b4aaecdc2f47f7a633a86dcaa0ef46
Publikováno v:
PLoS ONE, Vol 10, Iss 6, p e0130732 (2015)
This study investigates morphological differences between flakes produced via "core and flake" technologies and those resulting from bifacial shaping strategies. We investigate systematic variation between two technological groups of flakes using exp
Externí odkaz:
https://doaj.org/article/e70d45d6e5674a37a578cc77fcb0fc9d
Publikováno v:
PLoS ONE, Vol 10, Iss 9, p e0133984 (2015)
Blank size and form represent one of the main sources of variation in lithic assemblages. They reflect economic properties of blanks and factors such as efficiency and use life. These properties require reliable measures of size, namely edge length a
Externí odkaz:
https://doaj.org/article/c24ac6299e39496798f3a7ecdaeeca6a
Autor:
Yonatan Sahle, W Karl Hutchings, David R Braun, Judith C Sealy, Leah E Morgan, Agazi Negash, Balemwal Atnafu
Publikováno v:
PLoS ONE, Vol 10, Iss 4, p e0126064 (2015)
Externí odkaz:
https://doaj.org/article/57623d10068b444c82900c696ceb6824
Autor:
Matthew V Caruana, Susana Carvalho, David R Braun, Darya Presnyakova, Michael Haslam, Will Archer, Rene Bobe, John W K Harris
Publikováno v:
PLoS ONE, Vol 9, Iss 11, p e113856 (2014)
Percussive technology continues to play an increasingly important role in understanding the evolution of tool use. Comparing the archaeological record with extractive foraging behaviors in nonhuman primates has focused on percussive implements as a k
Externí odkaz:
https://doaj.org/article/3a6c595692394deb852f85976cab8a48
Autor:
Yonatan Sahle, W Karl Hutchings, David R Braun, Judith C Sealy, Leah E Morgan, Agazi Negash, Balemwal Atnafu
Publikováno v:
PLoS ONE, Vol 8, Iss 11, p e78092 (2013)
Projectile weapons (i.e. those delivered from a distance) enhanced prehistoric hunting efficiency by enabling higher impact delivery and hunting of a broader range of animals while reducing confrontations with dangerous prey species. Projectiles ther
Externí odkaz:
https://doaj.org/article/45390775d1b14b46a8ff98e05bf18200
Autor:
Will Archer, David R Braun
Publikováno v:
PLoS ONE, Vol 8, Iss 8, p e69899 (2013)
There is general agreement that the diet of early hominins underwent dramatic changes shortly after the appearance of stone tools in the archaeological record. It is often assumed that this change is associated with dietary expansion to incorporate l
Externí odkaz:
https://doaj.org/article/e6aac42986274b5f9247a7174ce347bc
Autor:
Joseph V Ferraro, Thomas W Plummer, Briana L Pobiner, James S Oliver, Laura C Bishop, David R Braun, Peter W Ditchfield, John W Seaman, Katie M Binetti, Fritz Hertel, Richard Potts
Publikováno v:
PLoS ONE, Vol 8, Iss 4, p e62174 (2013)
The emergence of lithic technology by ≈ 2.6 million years ago (Ma) is often interpreted as a correlate of increasingly recurrent hominin acquisition and consumption of animal remains. Associated faunal evidence, however, is poorly preserved prior t
Externí odkaz:
https://doaj.org/article/4ecf2b80c088409083f6d8435e4f6656
Autor:
Thomas W Plummer, Peter W Ditchfield, Laura C Bishop, John D Kingston, Joseph V Ferraro, David R Braun, Fritz Hertel, Richard Potts
Publikováno v:
PLoS ONE, Vol 4, Iss 9, p e7199 (2009)
Major biological and cultural innovations in late Pliocene hominin evolution are frequently linked to the spread or fluctuating presence of C(4) grass in African ecosystems. Whereas the deep sea record of global climatic change provides indirect evid
Externí odkaz:
https://doaj.org/article/94b1fa0c40494e15a0b90386b3a4dd8a