A Secret Vice (2016) by J.R.R. Tolkien, edited by Dimitra Fimi and Andrew Higgins

Book review by Nelson Goering of A Secret Vice (2016) by J.R.R. Tolkien, edited by Dimitra Fimi and Andrew Higgin

Tolkien and Sanskrit (2016) by Mark T. Hooker

Book review of Tolkien and Sanskrit (2016) by Mark T. Hooke

Open tube guideway for high speed air cushioned vehicles

This invention is a tubular shaped guideway for high-speed air-cushioned supported vehicles. The tubular guideway is split and separated such that the sides of the guideway are open. The upper portion of the tubular guideway is supported above the lower portion by truss-like structural members. The lower portion of the tubular guideway may be supported by the terrain over which the vehicle travels, on pedestals or some similar structure

The impacts of new neighborhoods on poor families: evaluating the policy implications of the moving to opportunity demonstration

This paper was presented at the conference "Policies to Promote Affordable Housing," cosponsored by the Federal Reserve Bank of New York and New York University's Furman Center for Real Estate and Urban Policy, February 7, 2002. It was part of Session 3: The Impact of Housing on People and Places.Housing ; Housing policy ; Poverty ; Demography

Service discovery using Bloom filters

A protocol to perform service discovery in adhoc networks is introduced in this paper. Attenuated Bloom filters are used to distribute services to nodes in the neighborhood and thus enable local service discovery. The protocol has been implemented in a discrete event simulator to investigate the behavior in case of a multihop mobile ad-hoc network with nodes that all have services to offer. Methods to optimize the used bandwidth, which is a scarce resource in wireless networks, are investigated. Experiments performed with the simulator suggest that the proposed service discovery system enables users to find local services in a multihop ad-hoc network efficiently. The costs for advertising can be kept low, whereas the additional costs for queries set due to so-called false positives are moderate

Non-Profit Firms and the Provision of Durable Goods

A simple linear demand two-period durable goods is analyzed where the durable good is provided by private non-profit organization (NPO). A novel flexible objective function is utilized that allows for both the “commercial” and “social concern” aspects of NPOs. The model indicates NPO’s will not typically provide the efficient cost-minimizing durability in sales markets. Indeed, if the NPO cannot credibly commit to its own stakeholders it will manufacture output with less durability than a pure for-profit seller. We show the NPO’s level of commitment ability and social concern with its stakeholders is crucial for determining the amount of “planned obsolescence” that would prevail if NPOs expand into durable goods markets. Interestingly, the social concern commonly cited for the existence of NPOs, is a double edged sword since it may cause more or less product obsolescence.

Modulus of families of walks on graphs

We introduce the notion of modulus of families of walks on graphs. We show how Beurling's famous criterion for extremality, that was formulated in the continuous case, can be interpreted on graphs as an instance of the Karush-Kuhn-Tucker conditions. We then develop an algorithm to numerically compute modulus using Beurling's criterion as our guide.Comment: Fixed a minor mistake and updated a referenc