Time filter

Source Type

Hayward, CA, United States

California State University, East Bay is a public university located in the eastern region of the San Francisco Bay Area. The university, as part of the 23-campus California State University system, offers 136 undergraduate and 60 post-baccalaureate areas of study. Cal State East Bay has been designated a top–tier institution among master's–granting universities in the west by U.S. News & World Report and has been recognized as a "Best in the West" college by the Princeton Review.Founded in 1957, Cal State East Bay has a student body of over 13,000. The university's largest and oldest campus is located in the Hayward Hills, with additional campus-sites in the cities of Oakland and Concord. The university operates on the quarter system and is scheduled to convert to the semester system by 2020.In 2005, with multiple campuses across the region, the university broadened its mission to serve the eastern region of the San Francisco Bay Area. To reflect a more widespread objective, the school changed its name from California State University, Hayward to California State University, East Bay that same year. Wikipedia.

Klapp S.T.,California State University, East Bay
Consciousness and Cognition | Year: 2015

Priming is the influence of one event on performance during a second event. One type of priming is known as semantic priming because it biases interpretation of the subsequent stimulus. Another type, direct response priming, biases responding directly without semantic mediation. Research reviewed in this article indicates that two versions of the second type, direct response priming, can be distinguished. One version, explicit priming, requires awareness of the prime. The other version, associative response priming, occurs even if the prime is masked and not phenomenally visible. This version, which is attributed to associations relating specific sensory events to movements of particular muscles, is enabled only if the association has previously been automatized by brief practice in which the to-be-primed response is made to the stimulus that subsequently appears as the prime. Associative response priming can be explained by a simple stimulus-response interpretation; other varieties of priming are more theoretically challenging. © 2014 Elsevier Inc.

Ledbetter M.P.,University of California at Berkeley | Romalis M.V.,Princeton University | Kimball D.F.J.,California State University, East Bay
Physical Review Letters | Year: 2013

A comparison between existing nuclear magnetic resonance measurements and calculations of the scalar spin-spin interaction (J coupling) in deuterated molecular hydrogen yields stringent constraints on anomalous spin-dependent potentials between nucleons at the atomic scale (∼1 Å). The dimensionless coupling constant gPpgPN/4π associated with the exchange of pseudoscalar (axionlike) bosons between nucleons is constrained to be less than 3.6×10-7 for boson masses in the range of 5 keV, representing improvement by a factor of 100 over previous constraints. The dimensionless coupling constant gApgAN/4π associated with the exchange of an axial-vector boson between nucleons is constrained to be gApgAN/4π<1.3×10 -19 for bosons of mass 1000 eV, improving constraints at this distance scale by a factor of 100 for proton-proton couplings and more than 8 orders of magnitude for neutron-proton couplings. © 2013 American Physical Society.

Johnson W.L.,California State University, East Bay
Child Abuse and Neglect | Year: 2011

Objective: Analysis of the validity and implementation of a child maltreatment actuarial risk assessment model, the California Family Risk Assessment (CFRA). Questions addressed: (1) Is there evidence of the validity of the CFRA under field operating conditions? (2) Do actuarial risk assessment results influence child welfare workers' service delivery decisions? (3) How frequently are CFRA risk scores overridden by child welfare workers? (4) Is there any difference in the predictive validity of CFRA risk assessments and clinical risk assessments by child welfare workers? Method: The study analyzes 7,685 child abuse/neglect reports originating in 5 California counties followed prospectively for 2 years to identify further substantiated child abuse/neglect. Measures of model calibration and discrimination were used to assess CFRA validity and compare its accuracy with the accuracy of clinical predictions made by child welfare workers. The extent of use of an override feature of the CFRA and child welfare worker reliance on CFRA risk scores for making service decisions were analyzed. Results: Imperfect but better-than-chance predictive validity was found for the CFRA on a range of measures in a large temporal validation sample (n= 6,543). For 114 cases where both CFRA risk assessments and child welfare worker clinical risk assessments were available, the CFRA exhibited evidence of imperfect but better-than-chance predictive validity, while child welfare worker risk assessments were found to be invalid. Child welfare workers overrode CFRA risk assessments in only 114 (1.5%) of 7,685 cases and provided in-home services in statistically significantly larger proportions of higher- versus lower-risk cases, consistent with heavy reliance on the CFRA. Conclusions/practice implications: Until research identifies actuarial models exhibiting superior predictive validity when applied in every-day practice, the CFRA is, and will be a valuable tool for assessing risk in order to make in-home service-provision decisions. © 2011 Elsevier Ltd.

Agency: NSF | Branch: Continuing grant | Program: | Phase: AMO Experiment/Atomic, Molecul | Award Amount: 299.92K | Year: 2013

Our research program encompasses two different projects. The first project is an experimental search for a long-range interaction between atomic spins and the mass of the Earth. Such an interaction could arise due to a heretofore undiscovered fifth force or if gravity, as opposed to being a purely tensor interaction as assumed in general relativity, has a scalar/pseudoscalar component. Recent theoretical work has shown that such interactions could be the cause of the accelerating expansion of the universe, commonly attributed to dark energy. Our experiment seeks to detect this effect by simultaneously measuring the spin precession of two isotopes of rubidium using laser spectroscopy. Our experiment aims to improve experimental sensitivity to long-range spin-mass interactions by 1-3 orders of magnitude. Our second project focuses on development of a prototype sensor for the Global Network of Optical Magnetometers for Exotic physics (GNOME), an array of geographically separated, time-synchronized ultrasensitive atomic comagnetometers that will search for correlated transient signals heralding new physics. The GNOME would be sensitive to nuclear and electron spin couplings to various exotic particles and fields. To date, no such search has ever been carried out, making the GNOME a novel experimental window on new physics. A specific, feasible example of new physics detectable with the GNOME, presently unconstrained by astrophysical observations and laboratory experiments, is a network of domain walls of light pseudoscalar fields.

Our present understanding of fundamental physics is confronted by a number of deep mysteries: the origin of the matter-antimatter asymmetry of the universe, the nature of dark energy, and the nature of dark matter. Our experiments, conducted in laboratories on Earth, use precise measurements of atomic spins to test several hypotheses that might explain these mysteries. It has been proposed that if our present theory of gravity is incomplete, additional components of gravity could both generate the dark energy pushing the universe apart and produce an excess of matter over antimatter after the Big Bang. These additional components of gravity would also cause atomic spins to precess in the Earths gravitational field, the effect for which our experiment will search. A possible explanation of dark matter is a network of invisible galactic-scale domain walls that store considerable mass and energy. These invisible domain walls would exert a small torque on atomic spins that could be detected when the Earth passes through a wall. We are building a prototype sensor sensitive to such torques from domain wall-crossing events. An array of time-synchronized sensors based on our prototype will search for transient signals of astrophysical origin heralding such new physics. Our research is being carried out at a public undergraduate institution with a diverse student body, providing hands-on experience in state-of-the-art experimental physics to many undergraduate students (including a significant number of women and underrepresented minorities).

Agency: NSF | Branch: Standard Grant | Program: | Phase: Biodiversity: Discov &Analysis | Award Amount: 252.35K | Year: 2016

Vanuatu is a group of 80 islands located in the South Pacific, situated roughly equidistant from New Caledonia, Fiji, and the Solomon Islands, all of which are globally important biodiversity hotspots. Despite its significance as a treasure trove of biodiversity, Vanuatus plants and fungi remain poorly documented, leaving a significant gap in our knowledge of regional biodiversity compared with neighboring island countries, all of which have active or completed flora surveys. The few existing plant surveys in Vanuatu have focused primarily on the northern end of the archipelago. In the southern part of the country, little reliable botanical data exist, and there is great potential for new scientific discoveries. This project focuses on Tafea Province, the five southernmost islands of Vanuatu. In March, 2015, Tafea Province was the site of a catastrophic category-5 super-cyclone. Just prior to that, eight forest transects were established to characterize vegetation growth and change over time. These study sites were severely impacted by the storm, and monitoring efforts will provide an important opportunity to understand how Pacific-Island forests recover from this type of event. Along with its rich biological diversity, Vanuatu is also the most linguistically rich country in the world, with 112 languages for a total population of only 253,000; nine of these languages are found only in Tafea Province. As globalization and economic development are proceeding in Vanuatu, local languages are being replaced by English, French, and Bislama (a local Creole), and thus there is a critical need to document local languages and the botanical knowledge that is encapsulated therein. Undergraduate students will be trained in the analysis of linguistic data, and graduate students will participate in all aspects of the research and receive valuable training in tropical botany and mycology.

The researchers will complete the first comprehensive survey of angiosperms, gymnosperms, ferns, lycophytes, bryophytes, endophytic and macro-fungi, and lichens ever undertaken in Tafea Province. Surveys will be conducted using two approaches: 1) establishment of permanent monitoring transects and plots, which will allow for both vegetation analysis and dense floristic and fungal sampling, and provide an opportunity for long-term monitoring in the face of global climate change, and 2) a general collecting approach will be used across larger areas. From these data, an annotated checklist (both hard copy and online) will be assembled using the database of newly collected and historical specimens. The checklist will allow for tests of phytogeographic relationships among Vanuatu and its closest neighbors (New Caledonia and Fiji), allowing the researchers to address questions relating to levels of endemism, species distributions, and evolution of the regional flora. Because most land in Vanuatu is held under customary ownership, and local people are the stewards of their environments, the loss of biocultural knowledge is a serious threat to their ability to manage biodiversity resources sustainably. To support local environmental education efforts, the project will combine the expertise of the teams linguists and botanists to work with indigenous speakers of eight Tafean languages to document names of plants and fungi, providing a tangible linkage between biodiversity, traditional culture, and conservation. Project linguists will produce printed and digital dictionaries of indigenous plant and fungal names and will use web-based videography and story maps, which spatially link names and traditional uses of organisms onto the landscape, helping viewers visualize the connections between biodiversity, knowledge, and place, providing a complement to the botanical databases.

Discover hidden collaborations