This book contains contributions by colleagues, former students and friends of Professor Eli Reshotko in celebration of his 60th birth­ day. Since Professor Reshotko's scientific and engineering contribu­ tions have been in the areas of hydrodynamic stability, transition to turbulence, and boundary layer flows, it is only appropriate that the articles in this volume be devoted to these and related topics. The first two sections focus on instabilities and transition in sub­ sonic and supersonic flows, respectively. The third section deals with developing turbulence, while the the final section treats related prob­ lems in engineering fluid mechanics. The diversity and scope of the articles contained herein exemplify the insight and expertise required in the study of transitional and turbulent flows today - traits which also exemplify Eli Reshotko's contributions to these fields. A few of the articles in this volume were presented at a sym­ posium in honor of Eli Reshotko's 60th birthday, held in Newport News, Virginia, on July 28, 1991. The symposium was sponsored by lCASE, and organized by M.Y. Hussaini (lCASE) and R. Hirsh (U.S. National Science Foundation). Of those who could not attend, many chose to honor Professor Reshotko by a contribution to the volume dedicated to him. We would like to use this opportunity to express our deep ap­ preciation to M.Y. Hussaini for initiating this very special tribute to Eli, and to Ms. Emily Todd for her efforts in the volume preparation and in the organization of the symposium.

New developments in the applications of fracture mechanics to engineering problems have taken place in the last years. Composite materials have extensively been used in engineering problems. Quasi-brittle materials including concrete, cement pastes, rock, soil, etc. all benefit from these developments. Layered materials and especially thin film/substrate systems are becoming important in small volume systems used in micro and nanoelectromechancial systems (MEMS and NEMS). Nanostructured materials are being introduced in our every day life. In all these problems fracture mechanics plays a major role for the prediction of failure and safe design of materials and structures. These new challenges motivated the author to proceed with the second edition of the book.

Un jeune photographe français en mission dans la bande de Gaza écoute un vieux libraire lui raconter son histoire, de l'exode à la prison, des engagements politiques à la désillusion, des bonheurs de la vie, de l'amour, du théâtre, des enfants qui grandissent au drame de perdre des êtres chers. Son récit est ponctué par les titres des livres qui ont jalonné son existence. …

Marie est née en 1912 dans une ferme de Corrèze, un lieu qu'elle n'a jamais quitté. A partir de la vie de son aïeule, l'auteur fait le portrait de ces femmes simples qui ont affronté l'absence de maris disparus trop tôt et la dure vie d'une exploitation agricole. …

Annis est encore enfant lorsqu'elle est témoin de la vente de sa mère à un nouveau propriétaire. Plus tard, ce maître se débarrasse d'elle et de plusieurs autres esclaves. Lors d'une terrible marche vers les plantations de la Nouvelle-Orléans, la jeune femme tente de se raccrocher à la vie et aux enseignements de cette mère, une battante qui descend des guerrières des rois du Dahomey. …

La Natura non muore in silenzio: ogni fiume avvelenato, ogni foresta distrutta, ogni costa devastata è un grido che reclama giustizia. "Uccidere la Natura" di Stefania Divertito racconta questo «ecocidio», le ferite invisibili, presenti in tutto il mondo, e tristemente ignorate, e ci invita a vedere l'ambiente non solo come una risorsa, ma come un essere vivente degno dei suoi diritti. In Colombia, il fiume Atrato, avvelenato dalle attività minerarie illegali, è stato riconosciuto come «soggetto di diritti», un'entità che richiede tutele giuridiche, grazie alla lotta delle comunità indigene che dipendono dalle sue acque per la sopravvivenza.

L'illusione del successo - Volume 1
In un'epoca in cui un click può trasformare una persona comune in un fenomeno virale, dove finisce la realtà e dove inizia l'apparenza?
Dieci racconti pungenti e attuali esplorano il lato nascosto della fama improvvisa e delle piccole ossessioni quotidiane. Personaggi ironici, fragili e spesso inconsapevoli si muovono tra like, commenti e riflettori digitali, scoprendo che la popolarità può essere tanto leggera quanto effimera.
Ogni storia è uno specchio deformato, capace di far sorridere e riflettere allo stesso tempo. Si ride, ci si riconosce, a volte ci si mette in discussione.

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