Multiple phases of human occupation in Southeast Arabia between 210,000 and 120,000 years ago

Changing climatic conditions are thought to be a major control of human presence in Arabia during the Paleolithic. Whilst the Pleistocene archaeological record shows that periods of increased monsoon rainfall attracted human occupation and led to increased population densities, the impact of arid conditions on human populations in Arabia remains largely speculative. Here, we present data from Jebel Faya in Southeast (SE) Arabia, which document four periods of human occupation between c. 210,000 and 120,000 years ago. The Jebel Faya record indicates that human occupation of SE Arabia was more regular and not exclusively linked to major humid periods. Our data show that brief phases of increased rainfall additionally enabled human settlement in the Faya region. These results imply that the mosaic environments in SE Arabia have likely formed a population refugia at the end of the Middle and the beginning of the Late PleistoceneOpen Access funding enabled and organized by Projekt DEAL.https://www.nature.com/srepBiochemistryGeneticsMicrobiology and Plant Patholog

Multiple phases of human occupation in Southeast Arabia between 210,000 and 120,000 years ago

Changing climatic conditions are thought to be a major control of human presence in Arabia during the Paleolithic. Whilst the Pleistocene archaeological record shows that periods of increased monsoon rainfall attracted human occupation and led to increased population densities, the impact of arid conditions on human populations in Arabia remains largely speculative. Here, we present data from Jebel Faya in Southeast (SE) Arabia, which document four periods of human occupation between c. 210,000 and 120,000 years ago. The Jebel Faya record indicates that human occupation of SE Arabia was more regular and not exclusively linked to major humid periods. Our data show that brief phases of increased rainfall additionally enabled human settlement in the Faya region. These results imply that the mosaic environments in SE Arabia have likely formed a population refugia at the end of the Middle and the beginning of the Late Pleistocene.

Identificación y análisis de los recursos económicos asignados a la segunda locomotora. Evolución, aciertos y desaciertos

Con la elaboración del presente documento, se pretende identificar y analizar los recursos económicos asignados a una de las locomotoras del gobierno del presidente Juan Manuel Santos en el marco de su plan de desarrollo Prosperidad para todos y el impacto social de esta asignación de recursos en el agro Colombiano, Así mismo evaluar el cumplimiento de dicha política publica y la generación de bienestar social en la población."With the production of the present document, one tries to identify and to analyze the economic resources assigned to one of the locomotives of the government of the president Juan Manuel Santos in the frame of his plan of development "" Prosperity for all "" and the social impact of this assignment of resources in the Colombian agro, Likewise to evaluate the fulfillment of the above mentioned politics publishes and the generation of social well-being in the population.

The greening of Arabia: multiple opportunities for human occupation of the Arabian peninsula during the Late Pleistocene inferred from an ensemble of climate model simulations

Climate models are potentially useful tools for addressing human dispersals and demographic change. The Arabian Peninsula is becoming increasingly significant in the story of human dispersals out of Africa during the Late Pleistocene. Although characterised largely by arid environments today, emerging climate records indicate that the peninsula was wetter many times in the past, suggesting that the region may have been inhabited considerably more than hitherto thought. Explaining the origins and spatial distribution of increased rainfall is challenging because palaeoenvironmental research in the region is in an early developmental stage. We address environmental oscillations by assembling and analysing an ensemble of five global climate models (CCSM3, COSMOS, HadCM3, KCM, and NorESM). We focus on precipitation, as the variable is key for the development of lakes, rivers and savannas. The climate models generated here were compared with published palaeoenvironmental data such as palaeolakes, speleothems and alluvial fan records as a means of validation. All five models showed, to varying degrees, that the Arabia Peninsula was significantly wetter than today during the Last Interglacial (130 ka and 126/125 ka timeslices), and that the main source of increased rainfall was from the North African summer monsoon rather than the Indian Ocean monsoon or from Mediterranean climate patterns. Where available, 104 ka (MIS 5c), 56 ka (early MIS 3) and 21 ka (LGM) timeslices showed rainfall was present but not as extensive as during the Last Interglacial. The results favour the hypothesis that humans potentially moved out of Africa and into Arabia on multiple occasions during pluvial phases of the Late Pleistocene

Temperamental correlates of trauma symptoms in firemen, policemen and soldiers

Objectives: The main goal of the research was to assess temperamental determinants of trauma symptoms in firemen, policemen and soldiers. The temperament traits which were considered were those postulated by the Regulative Theory of Temperament (briskness, perseveration, sensory sensitivity, emotional reactivity, endurance and activity). Material and Methods: A cross-sectional study was run on non-clinical samples. The participants were 417 men, White-Caucasian only: 284 firemen (aged 21–55), 58 policemen (aged 22–45), and 75 soldiers (aged 21–42). Temperament was assessed using the Formal Characteristics of Behavior – Temperament Inventory. Intensity of trauma symptoms was assessed with the PTSD-Factorial Version Inventory, a quantitative measure of trauma-related symptoms. The respondents were examined in their place of work. The study included only men reporting at least 1 traumatic event during the year before the trauma diagnosis. Results: Emotional reactivity had a significant positive effect on the intensity of trauma symptoms only in the group of firemen. Emotional reactivity accounted for 16% of the variance of trauma intensity symptoms in this occupational group. Negative significant effect on trauma symptoms was found for briskness only in the soldiers group (briskness explained 20% trauma intensity variance in this group). Conclusions: Emotional reactivity was conducive to the increased trauma symptoms intensity in firemen, whereas briskness tended to reduce symptoms intensity only in the group of soldiers