1,721,256 research outputs found
Edoardo Amaldi and Victor Weisskopf
No full textEdoardo Amaldi and Victor Weisskopf in a discussion, 197
XIX Edoardo Amaldi Conference
No full textThis book, comprising contributions presented at the XIX Edoardo Amaldi Conference, examines important aspects of international cooperation aimed at enhancing nuclear safety, security, safeguards (the “3S”), and non-proliferation, thereby assisting in the development and maintenance of the verification regime and progress toward a nuclear weapon-free world. The Conference served as a forum where eminent scientists, diplomats, and policymakers could compare national perspectives and update international collaborations. The book opens by addressing the political, institutional, and legal dimensions of the 3S and non-proliferation; current challenges are discussed and attempts made to identify possible solutions and future improvements. Subsequent sections consider scientific developments that can contribute to increased effectiveness in the implementation of international regimes, particularly in critical areas, technology foresight, and the ongoing evaluation of current capabilities. The closing sections discuss scientific and technical challenges to the effective implementation of the 3S approach and the role of international cooperation and scientific community actions in leading the world toward peace and security
Left to right : Pierre Auger, Edoardo Amaldi and Lew Kowarski
No full textLeft to right: Pierre-Auger, Edoardo Amaldi, Italian physicist who was appointed Secretary General of CERN at the first Council Session in Paris in May 1952, and Lew Kowarski, French physicist who became Director of the Laboratory Group which planned the site and its services
Docufilm "La Scelta. Edoardo Amaldi e la scienza senza confini"
No full textPremio 2020 della Società italiana di fisica per la Comunicazione Scientifica per la sceneggiatura del documentario “La Scelta. Edoardo Amaldi e la Scienza senza confini”, lavoro esemplare di comunicazione scientifica che scaturisce anche da un’approfondita attività di ricerca storica e d’archivio e da una preziosa raccolta di testimonianze orali
Screening documentary film The Decision: Edoardo Amaldi and Science without Borders
No full textBarry Barish, co-recipient of the Physics Nobel 2017 for the discovery of gravitational waves, will introduce the film with a few words on the figure of Edoardo Amaldi
Edoardo Amaldi, Bruno Pontecorvo and the invisible light of stars
Full text linkTwo new astronomical windows are opening at the beginning of
the third millennium, thanks to Observatories of very peculiar cosmic messengers: neutrinos and gravitational waves. Bruno Pontecorvo and Edoardo Amaldi, in different
ways, have contributed to the advancement of these fields of research and have inspired the work of many physicists. I dedicate this contribution to the memories of these two scientists. Remembering my encounter with Bruno, I report here on the experimental search for gravitational waves, in Italy and worldwide, and on some aspects of the study of the simultaneous emission of gravitational waves and
neutrinos by a supernova
Screening documentary film The Decision: Edoardo Amaldi and Science without Borders
No full textScreening of the historical documentary The Decision. Edoardo Amaldi and Science without Borders, English version of the Italian film La Scelta, by E. Agapito and Adele La Rana.
On the 30th anniversary of Edoardo Amaldi’s death, the film tells the story of the life and works of one of the most relevant scientific figures of the 20th century, from his commitment to the creation of CERN and ESA and the reconstruction of European physics to his contributions to the search of gravitational waves. The film will be introduced by Nobel Laureate Barry Barish, who is writing a biography of Amaldi with film screen writer and physics historian Adele La Ran
On the Approximability of the Minimum Fundamental Cycle Basis Problem
No full textWe consider the problem of finding a fundamental cycle ba- sis of minimum total weight in the cycle space associated with an undi- rected biconnected graph G, where a nonnegative weight is assigned to each edge of G and the total weight of a basis is defined as the sum of the weights of all the cycles in the basis. Although several heuristics have been proposed to tackle this NP-hard problem, which has several interesting applications, nothing is known regarding its approximability. In this paper we show that this problem is MAXSNP-hard and hence does not admit a polynomial-time approximation scheme (PTAS) unless P=NP. We also derive the first upper bounds on the approximability of the problem for arbitrary and dense graphs. In particular, for complete graphs, it is approximable within 4 + ε , for any ε > 0
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