Neurally Implementable Semantic Networks

We propose general principles for semantic networks allowing them to be implemented as dynamical neural networks. Major features of our scheme include: (a) the interpretation that each node in a network stands for a bound integration of the meanings of all nodes and external events the node links with; (b) the systematic use of nodes that stand for categories or types, with separate nodes for instances of these types; (c) an implementation of relationships that does not use intrinsically typed links between nodes.Comment: 32 pages, 12 figure

Addressing Default Trends in Patent-Based Section 337 Proceedings in the United States International Trade Commission

Section 337 of the Tarif Act of 1930 empowers the United States International Trade Commission to investigate imports to ensure imports do not infringe on U.S. trademarks. The Commission permits patent, copyright, and trademark owners to notify the Commission of possibly infringing imports and to obtain exclusion orders that prevent importation of products that infringe their intellectual property. The total number of investigations increased from 1996 to 2005, yet the proportion of respondent defaults rose as well. The increase in defaults suggests there is some systemic difficulty in ensuring full participation. This Note argues that the res judicata effects of particular outcomes in patent-based investigations may skew respondents\u27participationin centives. To recalibrate respondent participation incentives and spread participation costs more equitably, this Note proposes respondent class certification in patent-based section 337 investigations as a procedural alternative to intervention and mass joinder The proposed respondent class certification would also require bifurcation be available because, while many patent issues apply generally to each member of the proposed respondent class, some issues require an individualized determination for each respondent

Addressing Default Trends in Patent-Based Section 337 Proceedings in the United States International Trade Commission

Section 337 of the Tarif Act of 1930 empowers the United States International Trade Commission to investigate imports to ensure imports do not infringe on U.S. trademarks. The Commission permits patent, copyright, and trademark owners to notify the Commission of possibly infringing imports and to obtain exclusion orders that prevent importation of products that infringe their intellectual property. The total number of investigations increased from 1996 to 2005, yet the proportion of respondent defaults rose as well. The increase in defaults suggests there is some systemic difficulty in ensuring full participation. This Note argues that the res judicata effects of particular outcomes in patent-based investigations may skew respondents\u27participationin centives. To recalibrate respondent participation incentives and spread participation costs more equitably, this Note proposes respondent class certification in patent-based section 337 investigations as a procedural alternative to intervention and mass joinder The proposed respondent class certification would also require bifurcation be available because, while many patent issues apply generally to each member of the proposed respondent class, some issues require an individualized determination for each respondent

The S.S. Reading: Does it Float?

Increasing numbers of both elementary and secondary teachers have implemented Sustained Silent Reading (SSR) as a part of their program in reading instruction. Much of this implementation has occurred and will continue primarily on the recommendation of its proponents. There has been no serious examination of the assumptions by these proponents of its effectiveness in bringing about the benefits claimed for it. The tremendous importance attached to learning to read and the limited time available in which to provide instructional activities toward that end should lead us to a rigorous evaluation of SSR whenever and wherever it becomes a component of the reading program

Gravitational instabilities in a protosolar-like disc - I. Dynamics and chemistry

MGE gratefully acknowledges a studentship from the European Research Council (ERC; project PALs 320620). JDI gratefully acknowledges funding from the European Union FP7-2011 under grant agreement no. 284405. ACB's contribution was supported, in part, by The University of British Columbia and the Canada Research Chairs program. PC and TWH acknowledge the financial support of the European Research Council (ERC; project PALs 320620).To date, most simulations of the chemistry in protoplanetary discs have used 1 + 1D or 2D axisymmetric α-disc models to determine chemical compositions within young systems. This assumption is inappropriate for non-axisymmetric, gravitationally unstable discs, which may be a significant stage in early protoplanetary disc evolution. Using 3D radiative hydrodynamics, we have modelled the physical and chemical evolution of a 0.17 M⊙ self-gravitating disc over a period of 2000 yr. The 0.8 M⊙ central protostar is likely to evolve into a solar-like star, and hence this Class 0 or early Class I young stellar object may be analogous to our early Solar system. Shocks driven by gravitational instabilities enhance the desorption rates, which dominate the changes in gas-phase fractional abundances for most species. We find that at the end of the simulation, a number of species distinctly trace the spiral structure of our relatively low-mass disc, particularly CN. We compare our simulation to that of a more massive disc, and conclude that mass differences between gravitationally unstable discs may not have a strong impact on the chemical composition. We find that over the duration of our simulation, successive shock heating has a permanent effect on the abundances of HNO, CN and NH3, which may have significant implications for both simulations and observations. We also find that HCO+ may be a useful tracer of disc mass. We conclude that gravitational instabilities induced in lower mass discs can significantly, and permanently, affect the chemical evolution, and that observations with high-resolution instruments such as Atacama Large Millimeter/submillimeter Array (ALMA) offer a promising means of characterizing gravitational instabilities in protosolar discs.Publisher PDFPeer reviewe