Bekanntmachungen des Konsistoriums der Israeliten zu Kassel aus den Jahren 1808-1813

Samuel Steinberg

Abschrift aus einer Reisebeschreibung von Otto Blome im Jahre 1808 : Ms. im Besitze von Jacob Klatzkin

Otto Blome

Petition der Kommunalbehörden zu Berlin wegen Beibehaltung der Städte-Ordnung vom 19. November 1808

Boberach: Die bisherige Städteordnung ist dem Regierungsentwurf unbedingt vorzuziehen. Es ist nicht wünschenswert, das bisher an das Bürgerrecht gebundene Wahlrecht auf die Schutzverwandten auszudehnen, die das Bürgerrecht nicht erworben haben, weil sie keine Bürgergelder zahlen wollen. Das Dreiklassenwahlrecht wird abgelehnt

Die Namengebung der westfälischen Lanjudenschaft von 1808

Gustav Samuel

Dynamic Unicast: Information-Centric Multi-hop Routing for Mobile Ad-hoc Networks

Abstract Information-centric networking (ICN) offers new perspectives on mobile ad-hoc communication because routing is based on names but not on endpoint identifiers. Since every content object has a unique name and is signed, authentic content can be stored and cached by any node. If connectivity to a content source breaks, it is not necessarily required to build a new path to the same source but content can also be retrieved from a closer node that provides the same content copy. For example, in case of collisions, retransmissions do not need to be performed over the entire path but due to caching only over the link where the collision occurred. Furthermore, multiple requests can be aggregated to improve scalability of wireless multi-hop communication. In this work, we base our investigations on Content-Centric Networking (CCN), which is a popular {ICN} architecture. While related works in wireless {CCN} communication are based on broadcast communication exclusively, we show that this is not needed for efficient mobile ad-hoc communication. With Dynamic Unicast requesters can build unicast paths to content sources after they have been identified via broadcast. We have implemented Dynamic Unicast in CCNx, which provides a reference implementation of the {CCN} concepts, and performed extensive evaluations in diverse mobile scenarios using NS3-DCE, the direct code execution framework for the {NS3} network simulator. Our evaluations show that Dynamic Unicast can result in more efficient communication than broadcast communication, but still supports all {CCN} advantages such as caching, scalability and implicit content discovery.

Biological and physical controls in the Southern Ocean on past millennial-scale atmospheric CO2 changes

Millennial-scale climate changes during the last glacial period and deglaciation were accompanied by rapid changes in atmospheric CO2 that remain unexplained. While the role of the Southern Ocean as a ’control valve’ on ocean–atmosphere CO2 exchange has been emphasized, the exact nature of this role, in particular the relative contributions of physical (for example, ocean dynamics and air–sea gas exchange) versus biological processes (for example, export productivity), remains poorly constrained. Here we combine reconstructions of bottom-water [O2], export production and 14C ventilation ages in the sub-Antarctic Atlantic, and show that atmospheric CO2 pulses during the last glacial- and deglacial periods were consistently accompanied by decreases in the biological export of carbon and increases in deep-ocean ventilation via southern-sourced water masses. These findings demonstrate how the Southern Ocean’s ’organic carbon pump’ has exerted a tight control on atmospheric CO2, and thus global climate, specifically via a synergy of both physical and biological processes.

Bernhard Wolf Klausner [Illustration] : geb. 23. März 1808 - gest. 2. Februar 1880

Scan von Monochrom-Mikroform

Die Konsistorial-Verfassung in Frankreich vom 17. März 1808

Simon Bernfeld

Prediger Samson Wertheimer [Illustration] : gest. 1723

Scan von Monochrom-Mikroform

Das Namensregister der Kölner Juden von 1808

Adolf Kober

Zum Andenken an Moritz Veit : (geb. 13. September 1808)

Ludwig Geiger

Das "Kaschern" des Geschirres für Pessach [Illustration] : Aus einem Minhagbuche, Amsterdam 1723

Scan von Monochrom-Mikroform