Onboard Checkout and Data Management System /OCDMS/ computer selection criteria

Performance/design criteria for aid in selecting onboard checkout and data management system computer

Onboard Checkout and Data Management System /OCDMS/ - Preferred computer manufacturer-supplied software

Computer programs for simulation using digital syste

Tetra­ammonium diaqua­diperoxidoocta­molybdate(VI) tetra­hydrate

The title compound (NH4)4[Mo8O24(O2)2(H2O)2]·4H2O, consists of an octa­molybdate cluster with a crystallographic centre of symmetry. The clusters pack in a cubic close packing arrangement defining channels containing water mol­ecules and ammonium cations, which exhibit hydrogen bonding with neighbouring clusters. Hydrogen bonding also exists between the coordinated water mol­ecules of one cluster with one of the O atoms of the peroxido fragment in a neighbouring cluster

Looking East: Brice Marden, Michael Mazur, and Pat Steir

This is the catalogue of the exhibition "Looking East" at Boston University Art Gallery

Disasters in the media: a content analysis of the March 2011 Japan earthquake/tsunami and nuclear disasters

2012 Fall.Includes bibliographical references.This cross-cultural study analyzed online newspaper stories about the March 2011 Japan earthquake/tsunami and nuclear disasters from two nationally representative newspapers: the NYTimes.com in the United States and the Yomiuri Shimbun in Japan. This study investigated stories published between March 11, 2011, and April 15, 2011. These online news stories were examined to determine their use of disaster myths, past disasters, media hype, and directly quoted sources. Results show that few disaster myths were used overall; however, there was a difference in the number of panic flight myths used in the newspapers studied. References to past disasters were also measured on whether or not they were in the story. It was more common that stories did not mention a past disaster when reporting about the March 2011 Japan earthquake/tsunami and nuclear disasters. The NYTimes.com used more past disasters in its stories than did the Yomiuri Shimbun; Chernobyl was the most frequently mentioned past disaster. Results also show that there was no evidence of a nuclear crisis media hype in the newspapers during the time period analyzed. The study also investigated differences in the use of sources by the two newspapers. Counter to predictions, the Yomiuri Shimbun did not use more official sources than the NYTimes.com. The results suggest that culture played a role in the two newspapers covered the disaster. A closer investigation into each of the variables investigated in this study and the role of culture in reporting about disasters may be warranted in future research

A COMPARATIVE STUDY AND EVALUATION OF COLLABORATIVE RECOMMENDATION SYSTEMS

Consumers currently enjoy a surplus of goods (books, videos, music, or other items) available to purchase. While this surplus often allows a consumer to find a product tailored to their preferences or needs, the volume of items available may require considerable time or effort on the part of the user to find the most relevant item. Recommendation systems have become a common part of many online business that supply users books, videos, music, or other items to consumers. These systems attempt to provide assistance to consumers in finding the items that fit their preferences. This report presents an overview of recommendation systems. We will also briefly explore the history of recommendation systems and the large boost that was given to research in this field due to the Netflix Challenge. The classical methods for collaborative recommendation systems are reviewed and implemented, and an examination is performed contrasting the complexity and performance among the various models. Finally, current challenges and approaches are discussed

Probing the Black-Hole-Mass-Galaxy Connection of Active Galaxies Using 2D Galaxy Fitting Techniques on Near-Infrared Images

Active Galactic Nuclei (AGNs) provide a unique opportunity to measure the mass of supermassive black holes located in the centers of their host galaxies. This enables studying the scaling relations between the mass of the black hole and the properties of the host galaxy. In this thesis, we present an investigation of the relationship between black hole masses and the host galaxy bulge and total luminosity for a pilot sample of 15 objects imaged in the near-infrared with the 8m telescope of Gemini North observatory. We perform a 2D decomposition of the host galaxies using the software Galfit and obtain photometric measurements of the components. The high spatial resolution of the Gemini images allows for a detailed study of the different host galaxy components, in particular distinguishing between classical and pseudo-bulges in the presence of a bright AGN point source. In the literature, there is controversy about whether the mass of the black hole scales more closely with classical or pseudo bulges. Shedding light on this issue is crucial to our understanding of the underlying physical driver of the relations. In this study, the improved near-infrared images resulted in very different host galaxy parameters compared to those published in Bennert et al. 2015 based on images from the Sloan Digital Sky Survey. Our findings suggest that the sample of active galaxies reside in galaxies that are over-luminous compared to quiescent galaxies. Furthermore, we find that pseudo bulges are on the black-hole-mass - bulge-luminosity relation. However, for a handful of objects, the Gemini images do not have sufficient resolution to resolve the (pseudo-) bulge. Therefore, follow-up observations with the Hubble Space Telescope are currently underway

An essentially decentralized interior point method for control

Distributed and decentralized optimization are key for the control of networked systems. Application examples include distributed model predictive control and distributed sensing or estimation. Non-linear systems, however, lead to problems with non-convex constraints for which classical decentralized optimization algorithms lack convergence guarantees. Moreover, classical decentralized algorithms usually exhibit only linear convergence. This paper presents an essentially decentralized primal-dual interior point method with convergence guarantees for non-convex problems at a {super}linear rate. We show that the proposed method works reliably on a numerical example from power systems. Our results indicate that the proposed method outperforms ADMM in terms of computation time and computational complexity of the subproblems