Archéologie

Résumé

vignette|350px|Fouilles archéologiques. vignette|350px|Théâtre romain, Alexandrie, Égypte, découvert par accident en 1960 par l'expédition polonaise égyptienne à Kom el-Dekka. L' est une discipline scientifique dont l'objectif est d'étudier l'être humain à travers l'ensemble des vestiges matériels (artéfacts et ) ayant subsisté au cours des siècles. Provenant de fouilles ou non, ces vestiges sont de nature variée : outils, ossements, poteries, armes, pièces de monnaie, bijoux, vêtements, empreintes, traces, peintures, bâtiments, infrastructures, etc. L'ensemble des artéfacts et des écofacts relevant d'une période, d'une civilisation, d'une région, ou d'un peuplement donné, s'appelle culture archéologique. Cette culture matérielle est avant tout un concept basé sur l'assemblage de vestiges retrouvés dans des espaces et dans des chronologies contingentes, sur un même site, ou dans une même région, par exemple. On peut alors parler, pour désigner un ensemble cohérent, de culture archéol

Source officielle

https://fr.wikipedia.org/wiki/Arch%C3%A9ologie

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Complementary use of sterols and bile acids as faecal biomarkers in archaelogical soils.

University of Bristol1997

Chargement

This thesis assesses the surveillance operated on the mobile phone network by governmental actors (intelligence agencies, police, army) and the relationship between monitored spaces and their users. Indeed, some new surveillance devices used by intelligence services redefine surveillance spatiality raising new questions in this field of research. More specifically this research focuses on one specific object: the IMSI catcher, a monitoring apparatus of the cellular network that intercepts cellphones' identity and some communications in a given area by mimicking the activity of a cell tower. While this kind of device seems to offer a tactical and a security interest in the fight against terrorism and against crime, many civil liberties organisations such as the Electronic Frontier Foundation, Privacy International and _La Commission nationale de l'informatique et des libertÃ©s are concerned about the potential of an uncontrolled surveillance ; indeed, the controversial nature of the device could endanger certain individual and public rights. What is this technical object and which new issues comes with its use in surveillance? How and from which perspective is it problematic What does the IMSI catcher teaches us on the potential future of surveillance regimes? I look into this specific device case in a research framework at the intersection of design research practices, science and technology studies (STS) and surveillance studies. First, I deal with this surveillance apparatus as a technical object, from a perspective fed by the theoretical framework of concretization and technical lines proposed by Gilbert Simondon and Yves Deforge, through the analysis of a visual and technical documentation. Second, I use a research by design approach to explore certain assumptions regarding the nature of the object itself, its functioning and its "concrete" aspect â or rather "non-concrete" in the present case â with the help of approaches borrowed to reverse engineering and reconstitution, close to media archeology. Then, I explore possible opposition and protest trajectories with the help of prototypes designed with critical design and speculative design methods. Finally, through the writing of prospective scenarios, I build a design fiction that offers a synthesis, potentially subject to debate, around the IMSI catcher's uses, present and to come, and more broadly on the potential future of surveillance regimes.

EPFL2022

Chargement

Hydraulic scaled model tests for the optimization of approach channel excavation and approach flow conditions of haraz morning glory spillway

Anton Schleiss

Haraz dam under construction is located along Tehran-Amol road, 20 km upstream of the Amol city. A tunnel has been designed to detour the traffic temporarily around the dam site to avoid any closure of the main road. This tunnel will be integrated in the morning glory spillway of the dam. According to the road design constraints and the tunnel layout, the morning glory entrance is located next to the dam abutment. This is the main challenge in Haraz spillway in comparison with conventional morning glory spillway approach channel. A spillway hydraulic model was set up in Tehran Water Research Institute and the corresponding tests were performed on it subsequently. According to the test results and as expected, some disturbances in the stream lines were observed of the approach flow nearby the abutment which had some negative impacts on the spillway capacity and its performance. Several alternatives were studied to optimize the hydraulic conditions using the hydraulic model. Finally, taking advantage of piers in a specific position on the ogee crest was found to be the most promising solution for reducing flow disturbances. This method could be an innovative solution for morning glory spillways, which have to be located close to the abutments.

South African National Committee on Large Dams (SANCOLD)2016

Chargement

EPFL2022