Content-Based Video Retrieval in Historical Collections of the German Broadcasting Archive

The German Broadcasting Archive (DRA) maintains the cultural heritage of radio and television broadcasts of the former German Democratic Republic (GDR). The uniqueness and importance of the video material stimulates a large scientific interest in the video content. In this paper, we present an automatic video analysis and retrieval system for searching in historical collections of GDR television recordings. It consists of video analysis algorithms for shot boundary detection, concept classification, person recognition, text recognition and similarity search. The performance of the system is evaluated from a technical and an archival perspective on 2,500 hours of GDR television recordings.Comment: TPDL 2016, Hannover, Germany. Final version is available at Springer via DO

Efficient Broadcasting for a Mobile Ad-hoc Network based Peer-to-peer Community Radio Service

Ad-hoc networks consisting entirely of simple mobile phones can be used to deploy village level telephony. We investigate a novel application for such networks – a peer-to peer community radio service. We envision a system, where any user in the network is equally empowered to generate and distribute audio content to the entire network, using his or her mobile phone. This study concentrates on a critical aspect of this service – the choice of the network-wide broadcast protocol. Using extensive simulations, we evaluate the suitability of various broadcast techniques for a rural peer-to-peer mobile adhoc network. Our simulations identify the best choice of protocols under various village network conditions while simultaneously identifying limitations of the current protocols.

Message and time efficient multi-broadcast schemes

We consider message and time efficient broadcasting and multi-broadcasting in wireless ad-hoc networks, where a subset of nodes, each with a unique rumor, wish to broadcast their rumors to all destinations while minimizing the total number of transmissions and total time until all rumors arrive to their destination. Under centralized settings, we introduce a novel approximation algorithm that provides almost optimal results with respect to the number of transmissions and total time, separately. Later on, we show how to efficiently implement this algorithm under distributed settings, where the nodes have only local information about their surroundings. In addition, we show multiple approximation techniques based on the network collision detection capabilities and explain how to calibrate the algorithms' parameters to produce optimal results for time and messages.Comment: In Proceedings FOMC 2013, arXiv:1310.459

FCC Regulation of the Telecommunications Press

The author thinks we would not tolerate this sort of regulation in any context other than telecommunications; the First Amendment would forbid it. But somehow telecommunications speech is different and permits, many think, a different First Amendment regime. The author seeks here to raise questions about this assumption through an exploration of the justifications generally offered to support this different First Amendment regime for telecommunications speech. After exploring those justifications, the author will offer some alternative strategies for reforming telecommunications regulation in a manner which both eliminates present intrusion into protected speech and forwards the First Amendment interest of diversity of ideas

FCC Regulation of the Telecommunications Press

Storstäderna växer och folk vill bo allt mer centralt, men det finns inte mycket yta att bygga på ifall man inte vill offra naturområden. En lösning är att bygga på höjden, det vill säga öka antalet våningar. Det är vad denna uppsats handlar om och hur bostads- och hyresrättsföreningar kan dra nytta av detta genom att öka sin ekonomiska vinning, samtidigt som de gör samhället en tjänst och är med och mättar behovet. Det denna uppsats kommer att behandla är hur ekonomin i olika föreningar ändras i samband med takpåbyggnad med en eller flera våningar och hur detta skiljer sig utifrån olika tekniska lösningar. Syftet är att utifrån detta skapa en uppsats som kan gagna framtida fastigheter som överväger att göra en sådan ombyggnation. De metoder vi kommer använda är granskning av dokumentation och handlingar från olika föreningar som har genomgått en takpåbyggnad av en eller flera våningar. Dessa kommer att användas för att göra uträkningar och egna analyser. Även intervjuer med styrelsemedlemmar i bostadsrättsföreningarna och företag som utför takombyggnationer förekommer. Tekniska och juridiska krav behandlas även om vad som generellt gäller för en takpåbyggnad. I slutet så sker en analys av objekten, där man får se resultatet av det som undersökts. Avslutningsvis så kommer slutsatsen som ger oss svaret att en bostadsrättsförenings ekonomi med största sannolikhet gynnas av en ombyggnation av detta slag om möjligheten finns. De variationer som förekom var oftast lägesrelaterade och man kan se en tydlig korrelation mellan vinsten och ju mer centralt man hamnade. Slutsatsen är alltså i sin enkelhet att om möjligheten finns så är en våningstakpåbyggnad med stor sannolikhet ett lönsamt alternativ.The big cities are growing and people want to live ever more centrally, but there is not much space to build on if you do not want to sacrifice the natural areas. One solution is to build higher, namely increasing the number of floors. That's what this essay is about and how housing and tenancy associations can take advantage of this by increasing their financial gain, while they’re doing the community a service and is with and saturates need. There we will examine is how the economies of various compounds change with a storey extension with one or more floors and how this differs from different technical solutions. The aim is that by this create an essay that will benefit future properties that are considering doing such conversions. The methods we will use is the examination of records and documents of various cases that have undergone a storey extension of one or more floors. These will be used to make the calculations and their own analyzes. Interviews with board members of housing cooperatives and companies that perform storey extensions occur. Technical and legal claims are pending, although generally applicable for a storey extension. In the end this happens, an analysis of the items, where you see the results of what has been investigated. Finally it will conclude that gives us the answer to a housing association economy most likely benefits from a reconstruction of this kind if the possibility exists. The variations that occurred were usually locational and one can see a clear correlation between the gain and the more centrally it ended. The conclusion is thus in its simplicity that if there is a possibility to do a storey extension, then it probably is a viable alternative