Analytical study of catalytic reactors for hydrazine decomposition Quarterly progress report, 15 Jul. - 14 Oct. 1966

Computer programs used for formulating and solving integral and differential equations in study of catalytic reactors for hydrazine decompositio

Analytical study of catalytic reactors for hydrazine decomposition Quarterly progress report no. 1, 15 Apr. - 14 Jul. 1966

Analytic study of catalytic reactors for hydrazine decompositio

Theoretical investigation of radiant heat transfer in the fuel region of a gaseous nuclear rocket engine

Effect of fuel opacity on temperature distribution in gaseous nuclear rocket engin

Transient model of hydrogen/oxygen reactor

Numerical analysis of effects of transient response in catalytic ignition system to promote hydrogen-oxygen combustio

Study of catalytic reactors for hydrogen- oxygen ignition Final progress report, 28 Aug. 1968 - 28 May 1969

Catalytic ignition system for promoting hydrogen, oxygen combustio

Stability of Influence Maximization

The present article serves as an erratum to our paper of the same title, which was presented and published in the KDD 2014 conference. In that article, we claimed falsely that the objective function defined in Section 1.4 is non-monotone submodular. We are deeply indebted to Debmalya Mandal, Jean Pouget-Abadie and Yaron Singer for bringing to our attention a counter-example to that claim. Subsequent to becoming aware of the counter-example, we have shown that the objective function is in fact NP-hard to approximate to within a factor of $O(n^{1-\epsilon})$ for any $\epsilon > 0$. In an attempt to fix the record, the present article combines the problem motivation, models, and experimental results sections from the original incorrect article with the new hardness result. We would like readers to only cite and use this version (which will remain an unpublished note) instead of the incorrect conference version.Comment: Erratum of Paper "Stability of Influence Maximization" which was presented and published in the KDD1

Analytical study of catalytic reactors for hydrazine decomposition. One and two dimensional steady-state programs, computer programs manual

Programs manual for one-dimensional and two- dimensional steady state models of catalyzed hydrazine decomposition reaction chamber

Study of hydrazine reactor vacuum start characteristics Quarterly progress report, 1 May - 31 Jul. 1969

Liquid hydrazine penetration into catalyst particles upon immersion and decomposition of hydrazine ga

Hopping Conduction and Bacteria: Transport in Disordered Reaction-Diffusion Systems

We report some basic results regarding transport in disordered reaction-diffusion systems with birth (A->2A), death (A->0), and binary competition (2A->A) processes. We consider a model in which the growth process is only allowed to take place in certain areas--"oases"--while the rest of space--the "desert"--is hostile to growth. In the limit of low oasis density, transport is mediated through rare "hopping" events, necessitating the inclusion of discreteness effects in the model. By first considering transport between two oases, we are able to derive an approximate expression for the average time taken for a population to traverse a disordered medium.Comment: 4 pages, 2 figure