Distributed-memory parallelization of an explicit time-domain volume integral equation solver on Blue Gene/P

Two distributed-memory schemes for efficiently parallelizing the explicit marching-on in-time based solution of the time domain volume integral equation on the IBM Blue Gene/P platform are presented. In the first scheme, each processor stores the time history of all source fields and only the computationally dominant step of the tested field computations is distributed among processors. This scheme requires all-to-all global communications to update the time history of the source fields from the tested fields. In the second scheme, the source fields as well as all steps of the tested field computations are distributed among processors. This scheme requires sequential global communications to update the time history of the distributed source fields from the tested fields. Numerical results demonstrate that both schemes scale well on the IBM Blue Gene/P platform and the memory efficient second scheme allows for the characterization of transient wave interactions on composite structures discretized using three million spatial elements without an acceleration algorithm

Aeronautical mobile satellite service: Air traffic control applications

Canada's history both in aviation and in satellite communications development spans several decades. The introduction of aeronautical mobile satellite communications will serve our requirements for airspace management in areas not served by line-of-sight radio and radar facilities. The ensuing improvements in air safety and operating efficiency are eagerly awaited by the aviation community

An overview of the communications technology satellite project: Executive summary

An overview of the Communications Technology Satellite (CTS) project, a joint venture between NASA and the Canadian Department of Communications is given. A brief technical description of the CTS spacecraft and its cognate hardware and operations, a history of the CTS project, and a list of the CTS experiments and demonstrations conducted during the course of the project are given

A Proposed Solution to the Scholarly Communication Crisis

After reviewing the history and parameters of the scholarly communications crisis, particularly in regard to skyrocketing prices for journals in the natural sciences, the author reviews and rejects previously attempted solutions. He then employs the principles of game theory in proposing a new solution to the crisis

Fearless Friday: Hannah Lebovitz

This week, we recognize the work of Hannah Labovitz ’21. Hannah is currently pursuing a history major, a Spanish and Public History double minor, and a teaching certification. She is from Pittsburgh, Pennsylvania, and has been very involved in the Jewish community here at Gettysburg. She is the secretary and communications chair of Hillel, works as an assistant to Stephen Stern in the Judaic Studies Department, serves on the Judaic Studies committee, acts as co-President of Democracy Matters. She also participates in Alpha Phi Omega, College Democrats, and Dance Ensemble. [excerpt

A historical outline of school architecture in Malta

Although the history of education in Malta is well documented, the architectural history of local educational facilities is still as yet uncharted territory. The available literature on the architecture of schools in The Maltese islands and their underlying design philosophy is almost non-existent. A tentative outline can only be sketched on the basis of the substantial corpus of surviving drawings, various ad hoc reports ar.d for the international style modern schools, built in the 1950's and 60's, by direct verbal communications with their architects. This paper will present a concise historical exposition on school architecture in Malta and Gozo.peer-reviewe

In Search of Congressional Intent

Book Review: The Communications Act: A Legislative History of the Major Amendments, 1934-1996, Max D. Paglin ed., Pike & Fischer, Inc., 1999, 438 pages. The Communications Act: A Legislative History of the Major Amendments 1934-1996, a second volume of the important literary legacy of the Golden Jubilee Commission on Telecommunications, has recently appeared beside the well-thumbed copy of its sister volume, A Legislative History of the Communications Act of 1934, in the library of every diligent communications lawyer. In this Review, William Malone discusses both the content and the format of this legislative history, as well as the continuing relevance of each volume

In Search of Congressional Intent

Book Review: The Communications Act: A Legislative History of the Major Amendments, 1934-1996, Max D. Paglin ed., Pike & Fischer, Inc., 1999, 438 pages. The Communications Act: A Legislative History of the Major Amendments 1934-1996, a second volume of the important literary legacy of the Golden Jubilee Commission on Telecommunications, has recently appeared beside the well-thumbed copy of its sister volume, A Legislative History of the Communications Act of 1934, in the library of every diligent communications lawyer. In this Review, William Malone discusses both the content and the format of this legislative history, as well as the continuing relevance of each volume

Unleashing Cable T.V., Leashing the FCC: Constitutional Limitations on Government Regulation of Pay Television

Article examines the Federal Communications Commission’s 1975 decision to prohibit cablecasters from showing certain types of programming, on the rationale that pay cablevision, through successful competitive bidding, would ‘siphon’ this programming away from broadcast television and deprive the general public of popular programming. Article discusses the history behind the decision, the court of appeals’ treatment of the FCC rules and the decision’s possible effect on future pay cable regulation