Georgia State University

About: Georgia State University is a education organization based out in Atlanta, Georgia, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 13988 authors who have published 35895 publications receiving 1164332 citations. The organization is also known as: GSU & Georgia State.

Teacher Beliefs and Student Achievement in Urban Schools Serving African American Students

Abstract: Successful teachers of African American children create a relational and personal environment. Yet, no known study has developed a measure of teachers' culturally relevant beliefs nor systematically examined how they vary with student achievement. The authors created survey items that measured teachers' culturally relevant beliefs and ascertained which items correlate with higher student achievement. Teachers in 6 urban schools serving African American children endorsed beliefs regarding a communal learning environment, success of all students, teaching as giving back to the community, and the importance of students' ethnicity. In contrast to prior studies, teachers who taught students with high academic achievement viewed their role as disseminators of knowledge and believed in drill and practice.

Stability and Change in Attachment Security Across Adolescence

Abstract: This study examined both continuity and familial, intrapsychic, and environmental predictors of change in adolescent attachment security across a 2-year period from middle to late adolescence. Assessments included the Adult Attachment Interview, observed mother-adolescent interactions, test-based data, and adolescent self-reports obtained from an ethnically and socioeconomically diverse sample of moderately at-risk adolescents interviewed at ages 16 and 18. Substantial stability in security was identified. Beyond this stability, however, relative declines in attachment security were predicted by adolescents' enmeshed, overpersonalizing behavior with their mothers; depressive symptoms; and poverty status. Results suggest that although security may trend upward for nonstressed adolescents, stressors that overwhelm the capacity for affect regulation and that are not easily assuaged by parents predict relative declines in security over time.

A Comparison of Transaction Cost, Agency, and Knowledge-Based Predictors of IT Outsourcing Decisions: A U.S.-Japan Cross-Cultural Field Study

Abstract: As outsourcing evolves into a competitive necessity, managers must increasingly contend with the decision about which software development projects to outsource. Although a variety of theories have been invoked to study the initial outsourcing decision, much of this work has relied in isolation on one theoretical perspective. Therefore, the relative importance ascribed by managers to the factors from these theories is poorly understood. The majority of this work also masks interesting insights into outsourcing decisions by focusing on the information technology (IT) function rather than individual projects as the unit of analysis, where many of these decisions occur. In contrast, prior research at the project level has focused on predicting development performance in the postoutsourcing-decision phases of projects. The objective of this study is to examine the relative importance that IT managers ascribe to various factors from three complementary theories-transaction cost economics, agency theory, and knowledge-based theory-as they simultaneously consider them in their project outsourcing decisions. A secondary objective is to assess the cross-cultural robustness (United States versus Japan in this study) of such models in predicting project-level IT outsourcing decisions. We develop and test a multitheoretic model using data on 1,008 project-level decisions collected from 33 Japanese and 55 U.S. managers. Overall, our results provide novel insights into the relative importance that managers ascribe to the factors from these three theories, their complementarities and occasional contradictions, and offer new insights into the differences among U.S. and Japanese IT managers. Implications for theory and practice are also discussed.

The crires search for planets around the lowest-mass stars. i. high-precision near-infrared radial velocities with an ammonia gas cell*

Abstract: Radial velocities measured from near-infrared (NIR) spectra are a potentially powerful tool to search for planets around cool stars and sub-stellar objects. However, no technique currently exists that yields NIR radial velocity precision comparable to that routinely obtained in the visible. We are carrying out an NIR radial velocity planet search program targeting a sample of the lowest-mass M dwarfs using the CRIRES instrument on the Very Large Telescope. In this first paper in a planned series about the project, we describe a method for measuring high-precision relative radial velocities of these stars from K-band spectra. The method makes use of a glass cell filled with ammonia gas to calibrate the spectrograph response similar to the "iodine cell" technique that has been used very successfully in the visible. Stellar spectra are obtained through the ammonia cell and modeled as the product of a Doppler-shifted template spectrum of the object and a spectrum of the cell, convolved with a variable instrumental profile (IP) model. A complicating factor is that a significant number of telluric absorption lines are present in the spectral regions containing useful stellar and ammonia lines. The telluric lines are modeled simultaneously as well using spectrum synthesis with a time-resolved model of the atmosphere over the observatory. The free parameters in the complete model are the wavelength scale of the spectrum, the IP, adjustments to the water and methane abundances in the atmospheric model, telluric spectrum Doppler shift, and stellar Doppler shift. Tests of the method based on the analysis of hundreds of spectra obtained for late-M dwarfs over 6 months demonstrate that precisions of similar to 5 m s(-1) are obtainable over long timescales, and precisions of better than 3 m s(-1) can be obtained over timescales up to a week. The obtained precision is comparable to the predicted photon-limited errors, but primarily limited over long timescales by the imperfect modeling of the telluric lines. (Less)

Implementation rules for fiscal dec·entralization

Abstract: Rule #1 Fiscal decentralization should be viewed as a comprehensive system.Rule #2 Finance follows function.Rule #3There must be a strong central ability to monitor and evaluate decentralization.Rule #4 One intergovernmental system does not fit the urban and the rural sector. Rule #5 Fiscal decentralization requires significant local government taxing powers.Rule #6 Central governments must keep the fiscal decentralization rules that they make .Rule #7 Keep it simple. Rule #8 The design of the intergovernmental transfer system should match the objectives of the decentralization reform .Rule #9 Fiscal decentralization should consider all three levels of government. Rule #10 Impose a hard budget constraint. Rule #11 Recognize that intergovernmental systems are always in transition and plan for this. Rule #12 There must be a champion for fiscal decentralization .