Competition and Enterprise Performance in Transition Economies: Evidence from a Cross-country Survey

This paper uses a survey of 3,300 firms in 25 transition countries to shed light on the factors that influence restructuring by firms and their subsequent performance as measured by growth in sales and in sales per employee over a three-year period. We begin by surveying what a decade of transition has taught us about the factors that determine how firms respond to the new market environment. We go on to analyse the impact on performance of ownership, soft budget constraints, the general business environment and a range of measures of the intensity of competition as perceived by a firm. We find that competition has an important and non-monotonic effect on the growth of sales and of labour productivity: some degree of perceived market power is associated with higher sales growth, but competitive pressure is also important. Similar competition effects are found upon firms' decisions to develop and improve their products, but market power has an unambiguously negative impact on purely defensive (cost-reducing) restructuring activity. New firms have grown relatively fast, but among old firms ownership per se has no significant relationship to performance (though state-owned firms have engaged in significantly less development of new products). Soft budget constraints have a broadly negative and the business environment a broadly positive impact on restructuring and performance.http://deepblue.lib.umich.edu/bitstream/2027.42/39760/3/wp376.pd

Competition and Enterprise Performance in Transition Economies: Evidence from a Cross-country Survey

This paper uses a survey of 3,300 firms in 25 transition countries to shed light on the factors that influence restructuring by firms and their subsequent performance as measured by growth in sales and in sales per employee over a three-year period. We begin by surveying what a decade of transition has taught us about the factors that determine how firms respond to the new market environment. We go on to analyse the impact on performance of ownership, soft budget constraints, the general business environment and a range of measures of the intensity of competition as perceived by a firm. We find that competition has an important and non-monotonic effect on the growth of sales and of labour productivity: some degree of perceived market power is associated with higher sales growth, but competitive pressure is also important. Similar competition effects are found upon firms' decisions to develop and improve their products, but market power has an unambiguously negative impact on purely defensive (cost-reducing) restructuring activity. New firms have grown relatively fast, but among old firms ownership per se has no significant relationship to performance (though state-owned firms have engaged in significantly less development of new products). Soft budget constraints have a broadly negative and the business environment a broadly positive impact on restructuring and performance.competition.restructuring,privatization,soft budget constraints, business environment

Current and Nascent SETI Instruments

Here we describe our ongoing efforts to develop high-performance and sensitive instrumentation for use in the search for extra-terrestrial intelligence (SETI). These efforts include our recently deployed Search for Extraterrestrial Emissions from Nearby Developed Intelligent Populations Spectrometer (SERENDIP V.v) and two instruments currently under development; the Heterogeneous Radio SETI Spectrometer (HRSS) for SETI observations in the radio spectrum and the Optical SETI Fast Photometer (OSFP) for SETI observations in the optical band. We will discuss the basic SERENDIP V.v instrument design and initial analysis methodology, along with instrument architectures and observation strategies for OSFP and HRSS. In addition, we will demonstrate how these instruments may be built using low-cost, modular components and programmed and operated by students using common languages, e.g. ANSI C.Comment: 12 pages, 5 figures, Original version appears as Chapter 2 in "The Proceedings of SETI Sessions at the 2010 Astrobiology Science Conference: Communication with Extraterrestrial Intelligence (CETI)," Douglas A. Vakoch, Edito

State anxiety and cortisol reactivity to skydiving in novice versus experienced skydivers

Previous studies have suggested that skydiving, a naturalistic stressor, is associated with increases in self-reported stress, anxiety and cortisol levels. However, it has not been established whether this stress reactivity is altered as a function of repeated exposure to skydiving. This is of interest due to previous observations that cortisol reactivity becomes habituated with repeated exposure to laboratory stressors, however, few studies have investigated such habituation to naturalistic stressors. State anxiety and cortisol reactivity to skydiving were measured in 11 first-time skydivers and 13 experienced skydivers (≥ 30 jumps, mean jumps = 397.6), who were to complete a solo skydive. The novice skydivers reported significantly greater levels of state anxiety prior to the jump; however, there were no differences in pre-jump levels of salivary cortisol. Both groups exhibited significantly elevated salivary cortisol levels immediately post-jump, relative to i) pre-jump and ii) recovery. However, the two groups were indistinguishable with regard to their cortisol reactivity to the skydive. These findings support previous research demonstrating that skydiving elicits acute cortisol activation. Further, they suggest that i) cortisol reactivity does not habituate in experienced jumpers, and ii) that there is lack of concordance between self-reported levels of anxiety and biological stress reactivity in experienced skydivers

Racial/Ethnic group differences in bipolar symptomatology in a community sample of persons with bipolar I disorder.

To better understand the problems associated with diagnosis of bipolar disorder, especially problems related to race and ethnicity, this study compared whites, African Americans, and Latinos with bipolar I disorder in the presentation of manic symptoms, depressive episodes, functional impairments (Short Form-12), and self-reports of schizophrenia diagnosis. Data for this study were derived from the 2001 National Epidemiologic Survey on Alcohol and Related Conditions, which are nationally representative of United States households. African Americans and Latinos expressed similar rates in presentation of 14 out of 16 manic symptoms compared with whites, with the exception of grandiosity/self-esteem, in which they were more likely to exhibit this symptom compared with whites. Higher rates of depressive episodes were observed among whites, and these episodes occurred significantly earlier compared with African Americans and Latinos. Latinos had slightly higher vitality scores on the SF-12 measures after adjusting for sociodemographic and clinical factors, but no other differences across the groups were observed. Overall, these data show that the expression and functional impairments of bipolar I disorder is very similar across racial ethnic groups using this community-based sample. This is the first community-based study making such comparisons, with results suggesting that provider biases are more likely to explain problems in misdiagnosis than fundamental differences in the presentation of bipolar disorder across racial/ethnic groups.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/78175/1/00005053-201001000-00004.pd

Mining the Mind Research Network: A Novel Framework for Exploring Large Scale, Heterogeneous Translational Neuroscience Research Data Sources

A neuroinformatics (NI) system is critical to brain imaging research in order to shorten the time between study conception and results. Such a NI system is required to scale well when large numbers of subjects are studied. Further, when multiple sites participate in research projects organizational issues become increasingly difficult. Optimized NI applications mitigate these problems. Additionally, NI software enables coordination across multiple studies, leveraging advantages potentially leading to exponential research discoveries. The web-based, Mind Research Network (MRN), database system has been designed and improved through our experience with 200 research studies and 250 researchers from seven different institutions. The MRN tools permit the collection, management, reporting and efficient use of large scale, heterogeneous data sources, e.g., multiple institutions, multiple principal investigators, multiple research programs and studies, and multimodal acquisitions. We have collected and analyzed data sets on thousands of research participants and have set up a framework to automatically analyze the data, thereby making efficient, practical data mining of this vast resource possible. This paper presents a comprehensive framework for capturing and analyzing heterogeneous neuroscience research data sources that has been fully optimized for end-users to perform novel data mining