41 research outputs found
Vanguardia fotográfica y cultura de las mercancías. Alquimia. Sistema Nacional de Fototecas: Fotografía y publicidad. Num. 20 Año 7 (2004) enero-abril
No full textDaniel Canogar, Ciudades efímeras. Exposiciones universales: espectáculo y tecnología, Madrid, Julio Ollero Editor, 1992, p. 32.Publio López Mondéjar. Historia de la fotografía en España, Madris, Lunwerg, 1997, p. 156.Marisa Giménez Cacho, "La Nueva Objetividad", en Luna Córnea, núm. 1, invierno de 1992-1993, pp. 94-95Salvador Dalí, "La fotografía, pura creació de l´espírit", en L´Amic de les Arts, núm. 18, septiembre de 1927. Reimpreso en Dalí fotógraf, Dalí en el seus fotógrafs (cat.), Barcelona, Caixa de Pensions, 1983.Dalí fue muy sensible a la mercantilización de la cultura de masas. Introdujo un envase de Coca-Cola en su pintura Poesía de América (1943). Más tarde sus colaboraciones publicitarias incluyeron cuatro anuncios televisivos para Alka-Seltzer, el chocolate Lanvin y el automóvil Datsun. Hizo bocetos para los calcetines Bryans, corbatas y perfumes. En 1964 también diseño una botella para el brandy Osborne.Patricia Johnston, Real Fantasies: Edward Steichen´s, Advertising Photography, Los Angeles, University of California Press, 1997, p. 36.La anécdota que transcribe George Hurrel de su primer encuentro con Steichen es ilustradora de la dinámica economía publicitaria y el efecto que tuvo sobre los fotógrafos. Sentados en su minúsculo cuarto oscuro, The Big Man le regalaba consejos. En tanto, pidió que le revelara unas placas e imprimiera los contactos mientras conversaban. Al final le entrego cuarenta dólares por el trabajo. Poco después Hurrel se enteró que Steichen había cobrado por la imagen de tres encendedores la bonita cifra de mil quinientos dólares. Una pequeña fortuna en los años treinta. Indudablemente, esto convenció a Hurrell para volverse el más sofisticado fotógrafo publicitario en Hollywood.La serie Jergens fue desarrollada para la agencia publicitaria J. Walter Thompson y tuvo diversas versiones, las que aparecieron en revistas estadounidenses de alcance nacional entre 1925 y 1931. En la primera estapa las manos fueron las de Helen Lansdowne Resor, principal soporte de Steichen en la agencia y patrona de las artes. Más tarde Resor será Trustee del Museo de Arte Moderno en Nueva York, y contribuyó a una nueva etapa de Steichen, la que desmbocará en la exhibición planetario conocida como The Family of Man.Herbert Lottman, El París de Man Ray, Barcelona, Tusquets, 2003, p. 63.En 1924 Lissitzky integró por primera vez un fonograma dentro de un cartel para publicitar a la tinta Pelikan.Anandi Ramamurthy, "Constructions of Illusion. Photography and Commodity Culture", en Liz Wells (ed), Photography, a Critical Introduction, Londres, Routledge, 1997, p. 154.Juan Coronel Rivera, "Guillermo Khalo, fotógrafo 1872-1941", en Guillermo Khalo, vida y obra (cat.), México, Conaculta-INBA, 1993, p. 88.Una parte de estas estructuras metálicas se presentó en la exhibición Metáforas, fotografía construida, curada por Emma Cecilia García y realizada en el Museo de Monterrey, en septiembre de 1996
The historical exhibition THE FAMILY OF MAN, compiled by Edward Steichen for the Museum of Modern Art, New York, 1955, in dialogue with the private collection TEUTLOFF PHOTO + VIDEO COLLECTION, THE CONTEMPORARY FAMILY OF MAN, 1968 to the present.
No full textDiese Dissertationsschrift untersucht die historische Fotoausstellung The Family of Man und setzt sie in einen kontextuellen Dialog mit der Teutloff Collection, einer privaten zeitgenössischen Fotosammlung, mit dem Ziel eine dauerhafte dialogische Präsentation beider Sammlungen zu befördern und für zukünftige Diskussionen zu öffnen.The Family of Man, von Edward Steichen für das Museum of Modern Art, New York, konzipiert und 1955 eröffnet, ging bis 1965 als Wanderausstellung um die Welt und gilt als einflußreichstes Fotoprojekt des 20. Jahrhunderts. Mit ihrer pazifistischen Ausrichtung kann die bildgewaltige Installation auch als Visualisierung der Menschenrechtsdeklaration der Vereinten Nationen von 1948 gesehen werden. Die letzte vollständige Kopie wurde auf Wunsch Steichens seinem Geburtsland Luxemburg übergeben. Kuratorisch und konservatorisch betreut wird sie von den Steichen Collections CNA (Centre National de lAudiovisuel), dem staatlich geführten nationalen Zentrum für audiovisuelle Kunst Luxemburgs. Im Jahre 2003 kam The Family of Man auf die Liste des UNESCO Weltdokumentenerbes und wird auf Schloss Clervaux, Luxemburg, ausgestellt.The Family of Man hat Generationen von Kulturschaffenden beeinflusst. Sie inspirierte auch Lutz Teutloff, der unter dem Titel The Contemporary Family of Man eine Sammlung humanistischer Fotografie als zeitgenössische Antwort auf Edward Steichens Opus Magnum aufbaute. Nach Teutloffs Tod gelang der Autorin die erfolgreiche Vermittlung und Übergabe eines großen Teils der Sammlung an das CNA. Mit der Sicherung dieser privaten Fotosammlung für die Öffentlichkeit durch die Übernahme der Steichen Collections CNA und der geplanten dialogischen Präsentation gelingt ein Brückenschlag zu einem UNESCO Weltdokumentenerbe, der auf beide Sammlungen einen neuen Fokus setzt.This dissertation paper examines the historical photographic exhibition of The Family of Man and places it in contextual dialogue with the Teutloff Collection, a private contemporary photographic collection, with the aim of promoting a permanent dialogical presentation of both collections and opening it up for future discussion.The Family of Man, conceived by Edward Steichen for the Museum of Modern Art, New York, and opened in 1955, went around the world as a travelling exhibition until 1965 and is considered the most influential photographic project of the 20th century. With its pacifist orientation, the visually powerful installation can also be seen as a visualisation of the United Nations Declaration of Human Rights of 1948. At Steichen's request, the last complete copy was given to his country of birth, Luxembourg. It is curated and conserved by Steichen Collections CNA (Centre National de l'Audiovisuel), Luxembourg's state-run national centre for audiovisual art. In 2003, The Family of Man was added to the UNESCO World Documentary Heritage List and is exhibited at Clervaux Castle, Luxembourg.The Family of Man has influenced generations of cultural practitioners. It also inspired Lutz Teutloff who built a collection of humanist photography under the title The Contemporary Family of Man as a contemporary response to Edward Steichen's Opus Magnum. After Teutloff's death, the author successfully brokered and transferred a large part of the collection to the CNA. By securing this private photo collection for the public through the acquisition of the Steichen Collections CNA and the planned dialogical presentation, a bridge to a UNESCO World Documentary Heritage is being built that places a new focus on both collections.von Sabine Weichel ; Erste Gutachterin: Prof. Dr. Jutta Ströter-Bender (Universität Paderborn), Zweiter Gutachter: Prof. Dr. Wolfgang Bender (Universität Bayreuth)Tag der Verteidigung: 28.11.2018Universität Paderborn, Dissertation, 201
Edward Steichen's Influence on the Value of Photography
No full textIX, 74 p.The author examines how photography has been elevated from science to an art form through the photographer's talent and skill in creative processes, following the life and career of Steichen, who was one of the 20th century pioneers in promoting photography as art, She investigates how the critics regard his works and their aesthetic value, and demonstrates how collectors value photography relative to painting, and by looking at the work of Steichen, estimates the value the art market places on the various attributes of photographs. The author contends that for photography to be considered on par with other art forms, a photographer must envision the artwork from beginning to end and possess the technical skills to process the image in creative and innovative ways. In addition, for the value of photography to approach that of other media, patrons of photography must be educated in the finer points of the medium in order to appreciate its aesthetic as well as technical content
Mint Centrality: A Centrality Measure for the Bitcoin Transaction Graph
No full textIn this work, we consider the graph of confirmed transactions in Bitcoin. Understanding this graph is essential to discern the different economic activities conducted by the pseudonymous actors. In addition to traditional graph analysis methods, new metrics need to be engineered specifically for the bitcoin transaction graph. Hence, we propose a new centrality measure named mint centrality. The measure uses the inherent tree structure of transactions in bitcoin and their relation to the corresponding set of coinbase transactions, and can be evaluated with linear complexity. We evaluate the mint centrality on the first 200,000 blocks of the public bitcoin blockchain
ChainGuard - A Firewall for Blockchain Applications using SDN with OpenFlow
No full textpeer reviewedRecently, blockchains have been gathering a lot of interest. Many applications can benefit from the advantages of blockchains. Nevertheless, applications with more restricted privacy or participation requirements cannot rely on public blockchains. First, the whole blockchain can be downloaded at any time, thus making the data available to the public. Second, anyone can deploy a node, join the blockchain network and take part in the consensus building process. Private and consortium blockchains promise to combine the advantages of blockchains with stricter requirements on the participating entities. This is also the reason for the comparably small number of nodes that store and extend those blockchains. However, by targeting specific nodes, an attacker can influence how consensuses are reached and possibly even halt the blockchain operation. To provide additional security to the blockchain nodes, ChainGuard utilizes SDN functionalities to filter network traffic, thus implementing a firewall for blockchain applications. ChainGuard communicates with the blockchain nodes it guards to determine which origin of the traffic is legitimate. Packets from illegitimate sources are intercepted and thus cannot have an effect on the blockchain. As is shown with experiments, ChainGuard provides access control functionality and can effectively mitigate flooding attacks from several sources at once
The Art of The Scam: Demystifying Honeypots in Ethereum Smart Contracts
No full textpeer reviewedModern blockchains, such as Ethereum, enable the execution of so-called smart contracts - programs that are executed across a decentralised network of nodes. As smart contracts become more popular and carry more value, they become more of an interesting target for attackers. In the past few years, several smart contracts have been exploited by attackers. However, a new trend towards a more proactive approach seems to be on the rise, where attackers do not search for vulnerable contracts anymore. Instead, they try to lure their victims into traps by deploying seemingly vulnerable contracts that contain hidden traps. This new type of contracts is commonly referred to as honeypots. In this paper, we present the first systematic analysis of honeypot smart contracts, by investigating their prevalence, behaviour and impact on the Ethereum blockchain. We develop a taxonomy of honeypot techniques and use this to build HoneyBadger - a tool that employs symbolic execution and well defined heuristics to expose honeypots. We perform a large-scale analysis on more than 2 million smart contracts and show that our tool not only achieves high precision, but is also highly efficient. We identify 690 honeypot smart contracts as well as 240 victims in the wild, with an accumulated profit of more than $90,000 for the honeypot creators. Our manual validation shows that 87% of the reported contracts are indeed honeypots
Blockchain Orchestration and Experimentation Framework: A Case Study of KYC
No full textpeer reviewedConducting experiments to evaluate blockchain applications is a challenging task for developers, because there is a range of configuration parameters that control blockchain environments. Many public testnets (e.g. Rinkeby Ethereum) can be used for testing, however, we cannot adjust their parameters (e.g. Gas limit, Mining difficulty) to further the understanding of the application in question and of the employed blockchain. This paper proposes an easy to use orchestration framework over the Grid'5000 platform. Grid'5000 is a highly reconfigurable and controllable large-scale testbed. We developed a tool that facilitates nodes reservation, deployment and blockchain configuration over the Grid'5000 platform. In addition, our tool can fine-tune blockchain and network parameters before and between experiments. The proposed framework offers insights for private and consortium blockchain developers to identify performance bottlenecks and to assess the behavior of their applications in different circumstances.Large-Scale Blockchain Testbe
Demo: Blockchain for the Simplification and Automation of KYC Result Sharing
No full textpeer reviewedKnow Your Customer (KYC) processes performed by banks on their customers are redundant, cumbersome and costly. Therefore, a system is proposed to automate menial tasks and allow sharing of data related to KYC. A blockchain dictates the collaboration between different participants and several services are built around it to support the functionality of the system as a whole. An access control system is used to share data legitimately
