Mosaik - Konservierung - Restaurierung.

ICOLD Bulletin 180 presents the vast experience gained over the past 6 decades by the dam engineering community in the field of dam surveillance by means of 80 case histories. The documented case histories endeavour to cover the practical experiences related with one or several of the following points: a) Methods for the improvement of the quality and reliability of information. b) Data processing and representation techniques. c) Effective Diagnostic analyses to determine behaviour patterns. d) Dedicated surveillance systems for the optimization of maintenance, rehabilitation, and other life cycle costs. e) Impact of surveillance on preventing dam incidents and dam failure. f) Overview of dam surveillance management systems. The case histories cover a wide variety of technical aspects and deal with success stories but also incidents, some of them with catastrophic consequences. The time framework spans over 70 years: from the times of the Second World War up to the present. The purpose is to learn from these practical experiences, not to criticize the involved individuals, who had to work with the techniques and rules of practice available at the time. This bulletin wants to contribute to keep learning from the experience of the dam engineering community, specifically in the field of dam surveillance. Some of the case histories are widely known and have been described and analysed in numerous publications. Most of them are related to famous dam failure incidents and were compiled as international “benchmark case histories” for this bulletin to focus on the specific lessons learnt related with dam surveillance. Le Bulletin de la CIGB 180 présente la vaste expérience acquise au cours des 6 dernières décennies par la communauté des ingénieurs de barrages dans le domaine de la surveillance des barrages au moyen de 80 histoires de cas. Les histoires de cas documentées s'efforcent de couvrir les expériences pratiques liées à un ou plusieurs des points suivants : a) Méthodes d'amélioration de la qualité et de la fiabilité de l'information. b) Techniques de traitement et de représentation des données. c) Analyses diagnostiques efficaces pour déterminer les modèles de comportement. d) Systèmes de surveillance dédiés pour l'optimisation de la maintenance, de la réhabilitation et des autres coûts du cycle de vie. e) Impact de la surveillance sur la prévention des incidents et des ruptures de barrage. f) Aperçu des systèmes de gestion de la surveillance des barrages. Les histoires de cas couvrent une grande variété d'aspects techniques et traitent de réussites mais aussi d'incidents, dont certains avec des conséquences catastrophiques. Le cadre temporel s'étend sur 70 ans : de l'époque de la Seconde Guerre mondiale à nos jours. Le but est d'apprendre de ces expériences pratiques, pas de critiquer les individus impliqués, qui ont dû travailler avec les techniques et les règles de pratique disponibles à l'époque. Ce bulletin veut contribuer à continuer d'apprendre de l'expérience de la communauté de l'ingénierie des barrages, en particulier dans le domaine de la surveillance des barrages. Certaines des histoires de cas sont largement connues et ont été décrites et analysées dans de nombreuses publications. La plupart d'entre eux sont liés à des incidents de rupture de barrages célèbres et ont été compilés en tant qu'« histoires de cas de référence » internationales pour ce bulletin afin de se concentrer sur les leçons spécifiques apprises liées à la surveillance des barrages.

In recent years, funding for the conservation of cultural heritage has become increasingly difficult to obtain, and this trend shows no sign of changing significantly in the foreseeable future. The twelfth triennial meeting of the International Committee for the Conservation of Mosaics, held in Sardinia in October 2014, focused on the theme of cost, broadly considered, relating specifically to the preservation and presentation of the world’s mosaic heritage. This handsome, abundantly illustrated volume provides a comprehensive record of the conference. The volume’s sixty-seven papers and posters, comprising contributions from more than one hundred leading experts in the field, reflect the conference’s principal themes: cost, methods of survey and documentation, conservation and management, education and training, backing materials and techniques, presentation and display, and case studies. Papers are presented either in English, French, or Italian; there are abstracts in English and either French or Italian for all entries. The volume will be of interest to conservators, site managers, and others responsible for conserving the mosaic heritage, especially in these challenging times.

Undercurrent is the only student-run national undergraduate journal publishing scholarly essays and articles that explore the subject of international development. The journal is a refereed publication dedicated to providing a non-partisan, supportive, yet critical and competitive forum exclusively for undergraduate research, writing, and editing.

Between the second and the sixth centuries of the common era, elaborate mosaics were designed and created to pave the floors of town homes and rural estates of the Roman settlements in North Africa. These stunning mosaics were especially widespread in the colony of Africa Proconsularis, modern-day Tunisia, and covered a wide range of subject matter: from scenes of daily life and classical mythology, to abstract floral and geometric designs of rare vibrancy and complexity. A distinctive African style emerged, whose influence would extend throughout the Mediterranean basin and beyond. This catalogue is being published to coincide with an exhibition at the J. Paul Getty Museum at the Getty Villa from October 26, 2006, to April 30, 2007--the first major exhibition in the United States solely devoted to ancient mosaics. The twenty-seven mosaics in the exhibition come from Tunisia's leading museums, including the Bardo Museum in Tunis, the Sousse Museum and the El Jem Museum. Stories in Stone is structured around four principal themes--Nature, Theater and Spectacle, Myths and Gods, and Technique--and includes extensive material on mosaic conservation. In addition to color plates of all objects in the exhibit, this catalogue includes nine richly illustrated essays that illuminate the historical background of mosaic art, trace the development of principal themes, and examine the conservation of mosaics both in the museum setting and in situ. Contributors include Taher Ghalia, director of the Bardo Museum; Mongi Ennaifer, minister of cultural affairs, Tunisia; Thomas Roby, senior project specialist, Getty Conservation Institute; and Jerry Podany, head of antiquities conservation, J. Paul Getty Museum.