Historical review of missile aerodynamic developments

The development of missiles from early history up to about 1970 is discussed. Early unpowered missiles beyond the rock include the spear, the bow and arrow, the gun and bullet, and the cannon and projectile. Combining gunpowder with projectiles resulted in the first powered missiles. In the early 1900's, the development of guided missiles was begun. Significant advances in missile technology were made by German scientists during World War II. The dispersion of these advances to other countries following the war resulted in accelerating the development of guided missiles. In the late 1940's and early 1950's there was a proliferation in the development of missile systems in many countries. These developments were based primarily on experimental work and on relatively crude analytical techniques. Discussed here are some of the missile systems that were developed up to about 1970; some of the problems encountered; the development of an experimental data base for use with missiles; and early efforts to develop analytical methods applicable to missiles

AEGIS: A MILITARY INNOVATION CASE STUDY

The threat of hypersonic missiles being employed against U.S. naval forces by adversaries like China and Russia has forced current civilian and naval leaders to reexamine fleet defense to a degree similar to efforts at the end of World War II. When confronted with the threat of kamikazes and early anti-ship cruise missiles, the Navy launched a series of programs to close the capabilities gap between adversary weapons and the lack of a credible defense. The Navy’s eventual solution, the AEGIS Weapon System, was a revolutionary synthesis of system engineering integration with novel fleet defense tactics that have served as the backbone of the Navy surface forces for over 40 years. Why did AEGIS succeed at innovating while other programs failed? This thesis will answer this question by analyzing the development of AEGIS, from program inception to the introduction of AEGIS ships in the fleet, through the four paradigms of military innovation studies. Examination of AEGIS through each paradigm found that intraservice competition and culture were instrumental in AEGIS's success, with significant implications for policymakers. This thesis concludes with recommendations on how to best orient the Navy's approach toward hypersonic missile defense in the future.Lieutenant, United States NavyApproved for public release. Distribution is unlimited

Study of space battery accelerated testing techniques. Phase 1 report. Survey of testing methods applicable to space battery evaluation

Testing methods applicable to space battery evaluation - literature surve

Programmiersprachen und Rechenkonzepte

Die GI-Fachgruppe 2.1.4 "Programmiersprachen und Rechenkonzepte" veranstaltete vom 3. bis 5. Mai 2004 im Physikzentrum Bad Honnef ihren jährlichen Workshop. Dieser Bericht enthält eine Zusammenstellung der Beiträge. Das Treffen diente wie in jedem Jahr gegenseitigem Kennenlernen, der Vertiefung gegenseitiger Kontakte, der Vorstellung neuer Arbeiten und Ergebnisse und vor allem der intensiven Diskussion. Ein breites Spektrum von Beiträgen, von theoretischen Grundlagen über Programmentwicklung, Sprachdesign, Softwaretechnik und Objektorientierung bis hin zur überraschend langen Geschichte der Rechenautomaten seit der Antike bildete ein interessantes und abwechlungsreiches Programm. Unter anderem waren imperative, funktionale und funktional-logische Sprachen, Software/Hardware-Codesign, Semantik, Web-Programmierung und Softwaretechnik, generative Programmierung, Aspekte und formale Testunterstützung Thema. Interessante Beiträge zu diesen und weiteren Themen gaben Anlaß zu Erfahrungsaustausch und Fachgesprächen auch mit den Teilnehmern des zeitgleich im Physikzentrum Bad Honnef stattfindenden Workshops "Reengineering". Allen Teilnehmern möchte ich dafür danken, daß sie mit ihren Vorträgen und konstruktiven Diskussionsbeiträgen zum Gelingen des Workshops beigetragen haben. Dank für die Vielfalt und Qualität der Beiträge gebührt den Autoren. Ein Wort des Dankes gebührt ebenso den Mitarbeitern und der Leitung des Physikzentrums Bad Honnef für die gewohnte angenehme und anregende Atmosphäre und umfassende Betreuung

Data layout types : a type-based approach to automatic data layout transformations for improved SIMD vectorisation

The increasing complexity of modern hardware requires sophisticated programming techniques for programs to run efficiently. At the same time, increased power of modern hardware enables more advanced analyses to be included in compilers. This thesis focuses on one particular optimisation technique that improves utilisation of vector units. The foundation of this technique is the ability to chose memory mappings for data structures of a given program. Usually programming languages use a fixed layout for logical data structures in physical memory. Such a static mapping often has a negative effect on usability of vector units. In this thesis we consider a compiler for a programming language that allows every data structure in a program to have its own data layout. We make sure that data layouts across the program are sound, and most importantly we solve a problem of automatic data layout reconstruction. To consistently do this, we formulate this as a type inference problem, where type encodes a data layout for a given structure as well as implied program transformations. We prove that type-implied transformations preserve semantics of the original programs and we demonstrate significant performance improvements when targeting SIMD-capable architectures

3rd Meeting of the States Parties to the Anti-Personnel Mine Ban Convention (2001)

Managua, 18-21 September 2001 THIRD MEETING OF THE STATES PARTIES TO THE CONVENTION ON THE PROHIBITION OF THE USE, STOCKPILING, PRODUCTION AND TRANSFER OF ANTI-PERSONNEL MINES AND ON THEIR DESTRUCTIO

Air Force Institute of Technology Contributions to Air Force Research and Development, Calendar Year 1978

This report contains the listings of Master of Science Theses, Doctoral dissertations, Faculty consultations, and selected faculty publications completed during the 1978 calendar year at the Air Force Institute of Technology, at Wright-Patterson Air Force Base, Ohio

Social safety nets in World Bank lending and analytical work : FY2002 - 2007

This paper summarizes the state of the portfolio of World Bank lending activities and analytic work on social safety nets between FY2002-2007. It presents a description of the methodology used for compiling the inventories and analyses by region, type of intervention involved, sector board, and instrument. The World Bank has engaged with 118 countries on safety nets issues over the six years under review, providing lending in 68, analytic products in 86, training in 87, and a combined package of all three services in 42, demonstrating the increased sophistication and the important role of safety nets in social policy. There is noticeable variability over time as the portfolio and analytic effort expand when large or multiple countries face economic crises. The regional distribution of safety net activities shows the dominance of Latin America. The analysis also shows the diversity within the portfolio, with respect to both the type of intervention supported and the range of sectors involved in safety net work. Finally, the report delineates the implications and outlook for the future.Safety Nets and Transfers,Banks&Banking Reform,,Labor Policies,Debt Markets