Drawing on two decades of government efforts to "secure the homeland," experts offer crucial strategic lessons and detailed recommendations for homeland security. For Americans, the terrorist attacks of September 11, 2001, crystallized the notion of homeland security. But what does it mean to "secure the homeland" in the twenty-first century? What lessons can be drawn from the first two decades of U.S. government efforts to do so? In Beyond 9/11, leading academic experts and former senior government officials address the most salient challenges of homeland security today.

"Stronghold & Followers explains both the practicality of owning a keep (how much it costs to build, the costs to maintain it, what sort of impact it would have on local politics) and gives a variety of benefits for those players who choose to build or take over one." -- Comicbook.com website: https://comicbook.com/gaming/2018/12/14/stronghold-and-followers-dungeons-and-dragons/ (viewed July 16, 2019)

Music's top journalists celebrate "Spin" magazine's 20th anniversary with original essays tracing the history of alternative rock.

This powerful retrospective analysis of the 1999 Columbine High School shooting aftermath considers society's response to the attack, long-term implications of the shooting, and the ways in which research and related policy must continue to move forward. An indispensable resource for anyone interested in learning about the long-term impact of the 1999 Columbine High School shooting, Columbine, 20 Years Later and Beyond provides a comprehensive look at how the event unfolded, what has changed since the attack, and how this information can be used to prevent future mass shootings. Authors Jaclyn Schildkraut and Glenn Muschert, both experts on mass shootings, share their broad understanding of this tragedy and its aftermath. Columbine became the measuring stick against which all other mass shootings would be compared, and this book details with great sensitivity the ensuing changes to school security, law enforcement's response to active shooter situations, threat assessment practices, legislative efforts, and media coverage of unfolding situations. With delicacy and tact, Schildkraut and Muschert help to answer the painful question raised by a stone on the wall of the Columbine Memorial: "What have we learned?".

Addressing the major issues arising from the power ascribed to the Organization of the Petroleum Exporting Countries (OPEC), this book reflects the bredth, expertise and multifaceted viewpoints of the contributors: members of OPEC itself, industry representatives, and scholars and energy specialists from the USA, Europe and the Middle East. Throughout the book, the authors look at the potential of OPEC, discernible trends in such crucial areas as global petroleum supply and pricing, and the international economic and political implications of both.

As a professional organisation, EUROCALL has been aiming to promote innovative research, development and practice in the area of computer assisted language learning (CALL) and technology enhanced language learning (TELL) in education and training. These conference proceedings establish an overview of EUROCALL as it celebrated its 20th anniversary.

Tsubasa Ukine is known to the world as a prodigious composer. However, Mayjo Nishiki, a pianist he sees as a true “prodigy”, has always remained in Tsubasa's heart. Tsubasa is charmed and has kept feelings inside himself for 20 years. This intense one-sided love has no way of coming to fruition...or does it?

Vols. 3-140 include the society's Proceedings, 1907-41

In 1989, Edward Witten discovered a deep relationship between quantum field theory and knot theory, and this beautiful discovery created a new field of research called Chern-Simons theory. This field has the remarkable feature of intertwining a large number of diverse branches of research in mathematics and physics, among them low-dimensional topology, differential geometry, quantum algebra, functional and stochastic analysis, quantum gravity, and string theory. The 20-year anniversary of Witten's discovery provided an opportunity to bring together researchers working in Chern-Simons theory for a meeting, and the resulting conference, which took place during the summer of 2009 at the Max Planck Institute for Mathematics in Bonn, included many of the leading experts in the field. This volume documents the activities of the conference and presents several original research articles, including another monumental paper by Witten that is sure to stimulate further activity in this and related fields. This collection will provide an excellent overview of the current research directions and recent progress in Chern-Simons gauge theory.