613 research outputs found
Osadnictwo późnomeozolityczne na stanowisku 29 w Kopanicy, gm. Siedlec
Kopanica, site 29, is situated on the eastern edge of a former glacial trough, which now channels the Obra River north, and the latitudinal Warsaw-Berlin ice marginal valley. 2003 archaeological excavations at the site revealed evidence of intensive Late Mesolithic settlement. Trenches located on the sandy and gravel fluvial terrace of the Obra and in the zone of biogenic sediments yielded a substantial flint assemblage and remains of a dwelling structure sunken into the ground. The structure was radiocarbon dated owing to a fragment of a burnt animal bone from the fill deposit. The radiocarbon date coincides with the results of technological and typological analyses of the flint inventory. The Mesolithic settlement at the site can accordingly be attributed to a stay of a group representing the Chojnice–Pieńków (post-Maglemose) culture in the second half of the Atlantic period
Analiza środowiskowych uwarunkowań lokalizacji osadnictwa ze starszej i środkowej epoki kamienia na Pojezierzu Lubuskim. Zastosowanie drzew klasyfikacyjno-regresyjnych
The article presents results of the study of environmental variables influencing location of Palaeolithic and Mesolithic settlement in Pojezierze Lubuskie. A new method of predicting archaeological sites location has been suggested, based on classification and regression trees (CART), including nine natural variables. A detailed model has been designed illustrating dependency between these natural variables and intensity of prehistoric activity. The study, results have been also presented on the map, which systematisies and presents, in a coherent manner, a model of human presence in Palaeolithic and esolithic periods
Osadnictwo mezolityczne w południowej części Pojezierza Łagowskiego
Despite a growing recognition of late Palaeolithic and Mesolithic settlement in recent years, the area of Pojezierze Łagowskie still represents one of less known regions of western Poland, both in terms of Old and Middle Stone Age settlement and reconstruction of of contemporary environmental conditions. The article provides results of technological, typological, functional analyses, as well as that of raw materials used in stone industry of Mesolithic communities occupying sites 13 and 16 in Wilenko. Majority of functional tools is characterised by use-wear traces, which should be interpreted as results of variability of meat, bone, antler, and leather processing activities or game hunting. In the article an attempt has been made to reconstruct environmental conditions, on the basis of the results of pollen analysis
Mobility & activity patterns of individuals and parenting couples in the metropolitan area of Grenoble (France)
The geographies of our daily lives are becoming increasingly complex through phenomena such as urban sprawl, scattering of life spaces and the involvement of individuals in multiple types of activities. Daily mobility behavior can be seen as the keystone holding together the spatial components and time dimensions of the daily lives of individuals, each of whom must mobilize resources (technical and economic) and competencies (cultural and social) to organize as best they can their activities and travels across their life spaces.In this context, the conceptual framework of Time-Geography is particularly helpful, as it provides theoretical tools to investigate the space-time dimensions of daily life (Hägerstrand 1985; Lenntorp 1976; Carlestam & Sollbe 1991). Most of its principles have been adapted to mobility studies and are nowadays frequently used in the “activity-based” approach, which seeks to incorporate information on activity programs in the study of mobility behaviors (Axhausen & Gärling 1992). Our work clearly lies within this framework.Indeed, categories traditionally used to describe trip chains are inadequate for identifying the complex modes of daily organization that lie behind the diversity of mobility patterns (Kaufmann 2004). It would thus seem necessary to develop new ways to describe jointly individuals’ trip chains, activity planning and life spaces and to investigate links between all three. This is what we aim to do in this paper, through the production of new categories of mobility behaviors, based on standardized observations (household travel survey) in the French metropolitan area of Grenoble
Animal husbandry in the Early and Middle Neolithic settlement at Kopydłowo in the Polish lowlands: a multi-isotope perspective
The aim of this article is to examine the isotopic characterisation of domestic animals as it relates to birthing location and seasonality, diet, pasturing pattern, foddering and climatic conditions of herding and to determine variation between these aspects of cattle and caprine husbandry of the Neolithic Linearbandkultur (LBK) and Trichterbecherkultur (TRB) communities from Kopydłowo in Kujavia—one of the major centres of early farming in the European lowlands. Carbon and nitrogen stable isotope analysis was undertaken on faunal bone collagen; carbon, oxygen and strontium isotope ratios were measured from tooth enamel. Isotopic signatures may have been caused by different strategies of management of herds of these animal species. Different and more widely distributed carbon, nitrogen and strontium isotopic data for TRB cattle in comparison with its LBK counterparts is indicative of the exploitation of increasingly diverse ecological zones and more varied pastoral practises. The distribution of oxygen isotope values on caprine tooth made it possible to recognise herding seasonality. Irrespective of the chronology, cattle, sheep and goats kept by the inhabitants had C3 plant-based diet
Recomposition et dynamique des espaces de vie dans les régions métropolitaines : définir les centralités urbaines de la grande région grenobloise
International audienceWe present the results of a research in geography funded by the Rhône-Alpes Region, within the ARC7 programme. The objective of this work is to offer an operational method to understand the organization of metropolitan areas. The study is based on an analysis of stocks and flows of people, incomes and travel structuring territories. The challenge is both to construct a renewed methodology and provide a representation of nodes and links that structure the spaces of large cities. It consists in studying the hierarchy, complementarity and dynamics of the various levels of urban centrality in urban areas. The cases studied and presented in this paper concerns Grenoble urban area. Several steps are proposed, including the identification of primary and secondary centers for work, shopping and leisure reasons, and the analysis of trends in the urban and peri-urban centralities, the links between the different areas of Grenoble region.Cette communication présente les résultats d’un programme de recherche qui se déroule sur l’année 2013 et 2014. Il s’agit d’un projet financé par la région Rhône-Alpes dans le cadre de l’ARC7. L’objectif de ce travail est de proposer une lecture opérationnelle de l’organisation des espaces métropolitains sur la base de l’analyse des stocks et des flux de personnes, de revenus, de déplacements qui constituent ces territoires. L’enjeu est à la fois de construire une méthodologie renouvelée et d’offrir une représentation des noeuds et des liens qui structurent les espaces des grandes agglomérations. Il s’agit d’étudier la hiérarchisation, la complémentarité et la dynamique des différents niveaux de centralité urbaine au sein des agglomérations. Le cas étudié et présenté dans ce papier est celui de la région urbaine grenobloise. Plusieurs étapes sont proposées, parmi lesquelles l’identification des pôles principaux et secondaires pour des motifs de travail, d’achats et de loisirs ; l’analyse des évolutions de ces centralités urbaines et périurbaines ; les liens entre ces différents pôles de la région grenobloise
Représentations graphiques et indicateurs des mobilités et des dynamiques de peuplement : contribution bibliographique
La Base Endnote sera adressée à toute personne en faisant la demande auprès de Françoise Dureau : [email protected] main goal of the MOBIDYC research project (Mobilities and population movement: graphics and indicators) was to contribute to the definition of processing sequences that integrate both temporal and spatial dimensions of information related to spatial mobility (be it migration, residential mobility or daily mobility). Workshops were held on a quarterly basis to bring team members together. Between meetings, members worked separately on their own datasets. A first workshop was dedicated to the sharing of experience from previous work by members of the team. Then we focused on inventorying other experiences through bibliographic research. The aim of this article is to make the results of this research available to the scientific community. After stating the whys and hows of the collection of this bibliographic corpus, we present the material in the appendix: an Endnote set of references, along with a descriptive table synthesizing the content of these references. Finally, we present the main lessons we have learned through the analysis of this bibliographic corpus and from tests we carried out based on the methods described in the literature.L'objectif général du projet MOBIDYC (Mobilités et dynamiques de peuplement : représentations graphiques et production d'indicateurs) était d'avancer dans la définition de chaînes de traitement de l'information sur les mobilités spatiales (biographies migratoires et résidentielles, trajectoires de mobilité quotidienne) intégrant les deux dimensions, temporelles et spatiales, de l'information. La méthode de travail a consisté en un atelier réunissant les membres de l'équipe à un rythme trimestriel ; entre les séances de l'atelier, les chercheurs impliqués dans le projet ont travaillé en parallèle sur leurs corpus de données respectifs. Après une première étape consacrée à la mutualisation de nos expériences respectives, l'accent a été mis sur la recherche bibliographique et la recension des expériences dans le champ du projet. L'objectif de cet article est de mettre à disposition de la communauté scientifique le résultat de ce travail bibliographique. Après avoir rappelé les objectifs et conditions de réalisation de la base de données bibliographiques, nous présentons les informations mises à disposition en annexes de cet article : tableau de description synthétique des références bibliographiques, et la base Endnote des références . Enfin, nous livrons les principaux enseignements que nous avons tirés de l'analyse de ce corpus bibliographique, et des tests effectués à partir des méthodes identifiées dans la littérature
Addressing Priority Inversion In Dynamic Priority Schedulers
Dynamic priority schemes may be employed in real-time schedulers in which tasks meet specific deadlines. For example, in an earliest deadline first (EDF) scheme, the task with the earliest deadline is considered the most important. As time passes, the relative priorities of tasks are dynamic, e.g., they change based on their proximity to their respective deadlines. Priority inversion, which takes place when a low-priority task preempts a high-priority task, e.g., by locking a resource needed by the high-priority task, is difficult to handle in dynamic priority schedulers. This disclosure describes techniques to forestall or mitigate priority inversion in dynamic priority schemes. Per the techniques, a low-priority task that blocks higher priority tasks from running due to its owning a lock on a resource needed by the higher priority tasks is granted a new deadline and capacity such that the lock owner has the same overall opportunity to run as the lock contenders, were they not blocked on the lock. In this way, the lock-owing task gets sufficient time to execute while avoiding a priority inversion
Effect of the illuminance meter used on the results of color light pollution measurements
W pracy wyników stosowania dodatkowego oświetlenia. Zastosowano dwadzieścia dwa typy zasilaczy podłączonych do znanych krzywych adapterów widmowej głowic fotometrycznych oraz jednego źródła lamp emitujących światło kolorowe. Pomiary charakterystyczne dla charakterystycznego punktu, przedstawiające się na światłach intruzowych, o wartościach 3 lx. Rozważania uzupełnień przedstawiających symulowane oświetlenie. W innych przypadkach są one stosowane przez kontrolery i kontrolery. Należy zwrócić uwagę, że jednym z najważniejszych czynników wpływających na wynik jest krzywa charakterystyczna widmowej głowicy fotometrycznej. Największe rozbieżności w uzyskanych wartościach wynikających z oświetlenia w przypadku lampy emitującej światło niebieskie. W artykule zwrócono uwagę, że pomiar wartości użytkowych oświetlenia wytwarzanego przez lampy emitujące światło kolorowe nie jest łatwo dostępne. W zależności od tego, jakie konsekwencje mogą mieć konsekwencje dla skutków wynikających z kontroli świateł, które mogą się zdarzyć. Celem artykułu jest wykazanie, że nie wszystkie skalibrowane przełączniki kontrolne są kontrolowane
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