scispace - formally typeset
Search or ask a question
Institution

San Francisco State University

EducationSan Francisco, California, United States
About: San Francisco State University is a education organization based out in San Francisco, California, United States. It is known for research contribution in the topics: Population & Planet. The organization has 5669 authors who have published 11433 publications receiving 408075 citations. The organization is also known as: San Francisco State & San Francisco State Normal School.


Papers
More filters
Journal ArticleDOI
TL;DR: In this article, a dyadic perspective is proposed to examine how and why configurations of two firms' resources and capabilities affect the costs and benefits associated with each governance structure, and the likelihood of a pair of firms forming an alliance vs. engaging in an acquisition.
Abstract: For firms seeking to strategically combine their resources with those of other firms, two popular alternative governance structures emerge: alliance or acquisition. In this paper, we propose a dyadic perspective to examine how and why configurations of two firms' resources and capabilities affect the costs and benefits associated with each governance structure. More specifically, we posit that factors such as (1) the resource similarity and complementarity between a pair of firms, (2) the combined relational capabilities of a pair of firms, and (3) the partner-specific knowledge between a pair of firms will affect the likelihood of observing that pair of firms forming an alliance vs. engaging in an acquisition. We test and find support for our hypotheses using extensive longitudinal data from a sample of the largest firms in the United States from 1991 to 2000. Copyright © 2007 John Wiley & Sons, Ltd.

413 citations

Journal ArticleDOI
TL;DR: In this article, the alpha-rich freeze-out for values of neutron excesses larger than previously treated was explored, and it was found that a large part of the nuclear flow in the r-process may be carried by charged particle reactions up to about A of about 100.
Abstract: The paper explores the alpha-rich freeze-out for values of neutron excesses larger than previously treated, and reports the discovery of nuclear systematics that, for neutron excesses greater than about 0.05, allow the creation of heavier elements all the way up to A of about 100, even when most of the ejecta is in the form of heavy elements. It is found that a large part of the nuclear flow in the r-process may be carried by charged particle reactions up to about A of about 100. It is speculated that the site of these processes is the high-entropy 'wind' of a young neutron star in which neutrino energy deposition is driving mass loss. The pass of r-process ejected per supernova is expected to be about 0.0001 solar mass per Type II or Ib supernova, but this is sensitive to details of the presupernova structure, the explosion mechanism, and the amount of material that falls back onto the neutron star when the reverse shock arrives there.

409 citations

Journal ArticleDOI
TL;DR: Increased knowledge over the last decade of Pseudo-nitzschia and its production of DA is summarized, including changes in worldwide range, phylogeny, physiology, ecology, monitoring and public health impacts.

407 citations

Journal ArticleDOI
TL;DR: In this article, the authors revisited the analysis of a sample of 50 clusters studied as part of the Canadian Cluster Comparison Project and found that the uncertainty in the determination of photometric redshifts is the largest source of systematic error for our mass estimates.
Abstract: Masses of clusters of galaxies from weak gravitational lensing analyses of ever larger samples are increasingly used as the reference to which baryonic scaling relations are compared. In this paper we revisit the analysis of a sample of 50 clusters studied as part of the Canadian Cluster Comparison Project. We examine the key sources of systematic error in cluster masses. We quantify the robustness of our shape measurements and calibrate our algorithm empirically using extensive image simulations. The source redshift distribution is revised using the latest state-of-the-art photometric redshift catalogues that include new deep near-infrared observations. None the less we find that the uncertainty in the determination of photometric redshifts is the largest source of systematic error for our mass estimates. We use our updated masses to determine b, the bias in the hydrostatic mass, for the clusters detected by Planck. Our results suggest 1 − b = 0.76 ± 0.05 (stat) ± 0.06 (syst), which does not resolve the tension with the measurements from the primary cosmic microwave background.

404 citations


Authors

Showing all 5744 results

NameH-indexPapersCitations
Yuri S. Kivshar126184579415
Debra A. Fischer12156754902
Sandro Galea115112958396
Vijay S. Pande10444541204
Howard Isaacson10357542963
Paul Ekman9923584678
Russ B. Altman9161139591
John Kim9040641986
Santi Cassisi8947130757
Peng Zhang88157833705
Michael D. Fayer8453726445
Raymond G. Carlberg8431628674
Geoffrey W. Marcy8355082309
Ten Feizi8238123988
John W. Eaton8229826403
Network Information
Related Institutions (5)
Arizona State University
109.6K papers, 4.4M citations

94% related

Rutgers University
159.4K papers, 6.7M citations

91% related

Pennsylvania State University
196.8K papers, 8.3M citations

91% related

University of Colorado Boulder
115.1K papers, 5.3M citations

91% related

University of Maryland, College Park
155.9K papers, 7.2M citations

91% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202313
2022104
2021575
2020566
2019524
2018522