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Wyświetlanie 1-2 z 2
Tytuł:
Lithic Technology and Origin of the Stone Raw Material from the Guenfouda Cave (Jerada Province, Eastern Morocco)
Autorzy:
Souhir, Mohamed
Cruz, Sergio Almisas
Aouraghe, Hassan
Mhamdi, Hicham
Powiązania:
https://bibliotekanauki.pl/articles/1955523.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Guenfouda
prehistoric cave
Oujda mountains
eastern Morocco
Neolithic
Upper Paleolithic
raw material origin
Opis:
The Guenfouda cave is located 30 km south of the city of Oujda in the Jbel Metssila belonging to the Oujda Mountains. It was recognized as a site of archaeological interest in 2003. Excavations are scheduled every year, and important archaeological material (lithic, faunal and human) has been brought to light. A first study on the lithic industry was carried out by S. Almisas and M. Souhir [2018] under the title of "New studies on the lithic industry of the Neolithic deposits of the Oujda Mountains. Raw material and technology" [Reg.03 "Upper Pleistocene and Holocene cognitive complexity & archaeogenetics in North Africa" 15th PANAF Conférence, Rabat 2018]. The study is based on technological techniques, the typology of cut products and also on the origin of the raw material used. The lithic industry is abundant, well preserved in all levels and phases of the operating chain are present, indicating debitage in situ in the cave. The artefacts are brought back to the Neolithic for the upper levels, then to the final Upper Paleolithic (or Epipaleolithic) for the lower levels, marked by a change in culture with the appearance of back-to-body lamellae. The first analyses of the raw material used by prehistoric man in this cave, in particular the flint, generally comes from the Swimina area, located to the south of the Oued El Hay basin (Ain Béni Mathar). The limestones come from the surroundings of the mountains of ‘Oujda, plains and wadis. As for the basalt, it comes from an ancient Quaternary volcano located near the cave at the top of Jebel Metssila. In turn, quartzites, phtanites, silicified green schist and tuffite, they come from the Paleozoic buttonholes of Glib Naam and jbel boussofane (Province of Jerada). Given the information above, it appears that the man from Guenfouda may have used various rocks for the manufacturing of tools, and would have traveled distances of up to 60 km in radius to stock up on raw material, especially flint.
Źródło:
Journal of Ecological Engineering; 2021, 22, 8; 258-277
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of difficulty manipulation strategies on acquisition, retention and associated perceptions in fine motor coordination task learning in young school boys
Autorzy:
Elghoul, Yousri
Bahri, Fatma
Chaari, Nesrine
Ezeddinie, Souhir
Masmoudi, Liwa
Souissi, Nizar
Frikha, Mohamed
Powiązania:
https://bibliotekanauki.pl/articles/1031700.pdf
Data publikacji:
2018
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
competence
coordination
difficulty.
motor learning
Opis:
This study investigated whether difficulty manipulation strategies affect learning in the fine motor coordination task, perceived competence (PC) and perceived difficulty (PD). Thirty -nine novices’ right - handed boys (age 11.3 ± 0.4 years; stature 147 ± 8.94 cm ; body mass 40.57 ± 0.07 kg; mean ± SD), volunteers, were assigned to either control group (CTG: no difficulty manipulation)and two experimental groups: group 1 (EG1: one -dimension difficulty manipulation) and group 2 (EG2: two- dimensions difficulty manipu lation). All protocol sessions were conducted at the same time -of-day, in which, there were three periods: familiarization, acquisition and retention phases. Moreover, two stress- conditions of darts throw were investigated (i.e.: free condition (FC) and ti me pressure condition (TPC)). Results showed significant effect between - groups (p = 0.01, η2 = 0.215) based on difficulty strategies manipulation. Analysis showed an improvement in accuracy values in retention tests for only EG1and a significant l ower coefficient of variation (p = 0.41, η2 = 0.154) compared to the CTG and EG2. Errors decrease over time for CTG in FC (p = 0.041, η2= 0.203) but not in TPC, while no significant differences in errors for EG1 and EG2 (p = 0.19, η2 = 0.911) in the two st ress -conditions. Moreover, PD was significantly different between all test - phases (p = 0.041, η2 = 0.234) for EG1 only. The one -dimension learning strategy improves retention in accuracy performances, whereas, both strategies, do not affect errors in both FC and TPC . Therefore, teachers in physical education are not encouraged to combine difficulties in learning process of a novel fine motor coordination task.
Źródło:
Physical Activity Review; 2018, 6; 100-109
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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