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- Renata Kallosh, Navin Sivanandam, Masoud Soroush
- 2006

We develop some properties of the non-BPS attractive STU black hole. Our principle result is the construction of exact solutions for the moduli, the metric and the vectors in terms of appropriate harmonic functions. In addition, we find a spherically-symmetric attractor carrying p 0 (D6 brane) and q a (D2 brane) charges by solving the non-BPS attractor… (More)

- Renata Kallosh, Navin Sivanandam, Masoud Soroush
- 2008

We study the attractor mechanism for extremal non-BPS black holes with an infinite throat near horizon geometry, developing, as we do so, a physical argument as to why such a mechanism does not exist in non-extremal cases. We present a detailed derivation of the non-supersymmetric attractor equation. This equation defines the stabilization of moduli near… (More)

- Hans Jockers, Masoud Soroush
- 2008

For compact Calabi-Yau geometries with D5-branes we study N = 1 effective super-potentials depending on both open-and closed-string fields. We develop methods to derive the open/closed Picard-Fuchs differential equations, which control D5-brane deformations as well as complex structure deformations of the compact Calabi-Yau space. Their solutions encode the… (More)

- Hans Jockers, Masoud Soroush
- 2009

In this work we compute relative periods for B-branes, realized in terms of divisors in a compact Calabi-Yau hypersurface, by means of direct integration. Although we exemplify the method of direct integration with a particular Calabi-Yau geometry, the recipe automatically generalizes for divisors in other Calabi-Yau geometries as well. From the calculated… (More)

- Jorge L Garriga, Masoud Soroush
- 2010

This paper provides a review of the available tuning guidelines for model predictive control, from theoretical and practical perspectives. It covers both popular dynamic matrix control and generalized predictive control implementations, along with the more general state-space representation of model predictive control and other more specialized types, such… (More)

- Ankur Pariyani, Warren D Seider, Ulku G Oktem, Masoud Soroush
- 2010

A novel framework to model the chronology of incidents is presentedsdepicting the relationship of initiating events with the various regulating and protection systems of the processseventually leading to consequences, varying from zero to high severities. The key premise is that the departures and subsequent returns of process and product quality variables,… (More)

- Renata Kallosh, Navin Sivanandam, Masoud Soroush
- 2008

The majority of models of inflation in string theory predict an absence of measurable grav-itational waves, r << 10 −3. The most promising proposals for making string theoretic models that yield measurable tensor fluctuations involve axion fields with slightly broken shift symmetry. We consider such models in detail, with a particular focus on the N-flation… (More)

We present an explicit, exact to all orders in gravitational coupling E 7(7) symmetry transformations of on-shell N = 8 supergravity fields in the gauge with 70 scalars in E 7(7) SU(8) coset space, the local SU (8) symmetry being fixed. The non-linear realization of E 7(7) includes a field-dependent SU (8) transformation preserving the unitary gauge. We… (More)

- Francis J Doyle Iii, Masoud Soroush
- 2002

The increasingly aggressive global competition for the production of higher quality polymer products at lower costs, along with a general trend away from new capital investments in the U.S., has placed considerable pressure on the process engineers in the U.S. to operate the existing polymer plants more efficiently and to use the same plant for the… (More)

- Ankur Pariyani, Warren D Seider, Ulku G Oktem, Masoud Soroush
- 2011

Part II presents step (iii) of the dynamic risk analysis methodology; that is, a novel Bayesian analysis method that utilizes near-misses from distributed control system (DCS) and emergency shutdown (ESD) system databases—to calculate the failure probabilities of safety, quality, and operability systems (SQOSs) and probabilities of occurrence of incidents.… (More)