Fire extinguishing apparatus having a slidable mass for a penetrator nozzle

A fire extinguishing apparatus for delivering an extinguishing agent through a tarrier surrounding a structure into its interior includes an elongated tubular nozzle body which has a pointed penetrating head carried on one end of the tubular body. A source of extinguishing agent coupled to the opposite end of the tubular body is fed through and passes through passages adjacent the head for delivering the extinguishing agent to the interior of the structure. A slidable mass is carried on the tubular body on a remote end of the tubular body from the penetrating head. By manipulating the slidable mass and bringing such in contact with an abutment the force imparted to the tubular body causes the head to penetrate the structure

Analysis of the advanced Nimbus power systems

Solar-conversion power-supply subsystem for Nimbus B, using pulse width modulated voltage regulato

Fake View Analytics in Online Video Services

Online video-on-demand(VoD) services invariably maintain a view count for each video they serve, and it has become an important currency for various stakeholders, from viewers, to content owners, advertizers, and the online service providers themselves. There is often significant financial incentive to use a robot (or a botnet) to artificially create fake views. How can we detect the fake views? Can we detect them (and stop them) using online algorithms as they occur? What is the extent of fake views with current VoD service providers? These are the questions we study in the paper. We develop some algorithms and show that they are quite effective for this problem.Comment: 25 pages, 15 figure

Towards Laser Driven Hadron Cancer Radiotherapy: A Review of Progress

It has been known for about sixty years that proton and heavy ion therapy is a very powerful radiation procedure for treating tumours. It has an innate ability to irradiate tumours with greater doses and spatial selectivity compared with electron and photon therapy and hence is a tissue sparing procedure. For more than twenty years powerful lasers have generated high energy beams of protons and heavy ions and hence it has been frequently speculated that lasers could be used as an alternative to RF accelerators to produce the particle beams necessary for cancer therapy. The present paper reviews the progress made towards laser driven hadron cancer therapy and what has still to be accomplished to realise its inherent enormous potential.Comment: 40 pages, 24 figure

Lightweight Absorption and Barrier Systems Comprising N-Layer Microperforates

Since the concept of microperforated panels (MPPs) was introduced by Maa, there have been continuing efforts to apply MPPs, primarily as fiber-free sound absorbing materials, typically wall-mounted. The objective of the present work was to demonstrate that multi-layer MPPs can also be effective functional absorbers and lightweight barrier systems. The acoustical properties of lightweight MPPs depend on hole diameter, thickness, porosity, mass per unit area, and air cavity depth. In the case of a single layer, it is possible to find a combination of these parameters that results in good performance over one or two octaves. However, to be effective for noise control over a broader range of frequencies, it is necessary to design multi-layer MPPs. Thus here the focus was on the optimal design of multi-layer MPPs in the speech interference range, 500 to 4000 kHz. In the case of functional absorbers, the total absorption of the system was optimized, while in the case of barriers, a high transmission loss was desired, without necessarily sacrificing the absorption of the system. In the latter case, in particular, it was possible to create systems having transmission losses well in excess of the mass law over a broad range of frequencies

Static Shear Testing of 3M VHB 4611F and VHB 4941P Tape in the construction of Acoustic Movable Partition Wall panels

This paper investigates the effectivenes of 3M VHB 4611F and VHB 4941P tape in the construction of Acoustic Movable Partition Wall panels

Braj B. Kachru’s scholarly publications: A bibliography

Although best known for his work on world Englishes, Braj Kachru was a truly original thinker, whose academic writings included influential publications on English linguistics, Indian languages, but much else besides, including applied linguistics, bilingualism and multilingualism, code‐mixing and switching, cross‐cultural communication, language policy, linguistic variation, literary creativity, sociolinguistics, and the politics of language. Braj B. Kachru was a renaissance scholar of immense stature, whose work brought together Indian and English linguistics with the cultural perspectives of both Asia and the West, and inspired scholars worldwide to adopt fresh perspectives on so many language issues.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/150583/1/weng12411_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/150583/2/weng12411.pd

Introduction: Special issue on the life and work of Braj B. Kachru

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/150579/1/weng12413.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/150579/2/weng12413_am.pd