Texas Christian University

About: Texas Christian University is a education organization based out in Fort Worth, Texas, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 3245 authors who have published 8258 publications receiving 282216 citations. The organization is also known as: TCU & Texas Christian University, TCU.

Entrepreneurship and Strategy in Emerging Economies

Abstract: The goals of the special issue are to: (1) publish work that builds knowledge about the nature of strategic and entrepreneurial activities in emerging economies, as well as their antecedents and consequences; and (2) develop a theoretical foundation for future research. In this introduction to the special issue, we initially review the existing literature and the major definitions used to date for emerging economies. We then develop a framework for the analysis of where strategic entrepreneurship in emerging economies now stands that, in turn, allows us to develop an understanding of where the field needs to move in the future. We subsequently identify how each article in this special issue informs our research questions as we develop an agenda for future research.

Effects of heavy resistance training on myostatin mRNA and protein expression.

Abstract: WILLOUGHBY, D. S. Effects of Heavy Resistance Training on Myostatin mRNA and Protein Expression. Med. Sci. Sports Exerc., Vol. 36, No. 4, pp. 574–582, 2004.PurposeMyostatin is a negative regulator of muscle mass and its effects seem to be exacerbated by glucocorticoids; however, its response

The Galaxy Zoo survey for giant AGN-ionized clouds: past and present black hole accretion events

Abstract: Some active galactic nuclei (AGN) are surrounded by extended emission-line regions (EELRs), which trace both the illumination pattern of escaping radiation and its history over the light-travel time from the AGN to the gas. From a new set of such EELRs, we present evidence that the AGN in many Seyfert galaxies undergo luminous episodes 0.2–2×10 5 years in duration. Motivated by the discovery of the spectacular nebula known as Hanny’s Voorwerp, ionized by a powerful AGN which has apparently faded dramatically within � 10 5 years, Galaxy Zoo volunteers have carried out both targeted and serendipitous searches for similar emission-line clouds around lowredshift galaxies. We present the resulting list of candidates and describe spectroscopy identifying 19 galaxies with AGN-ionized regions at projected radii rproj > 10 kpc. This search recovered known EELRs (such as Mkn 78, Mkn 266, and NGC 5252) and identified additional previously unknown cases, one with detected emission to r = 37 kpc. One new Sy 2 was identified. At least 14/19 are in interacting or merging systems, suggesting that tidal tails are a prime source of distant gas out of the galaxy plane to be ionized by an AGN. We see a mix of one- and two-sided structures, with observed cone angles from 23–112 ◦ . We consider the energy balance in the ionized clouds, with lower and upper bounds on ionizing luminosity from recombination and ionizationparameter arguments, and estimate the luminosity of the core from the far-infrared data. The implied ratio of ionizing radiation seen by the clouds to that emitted by the nucleus, on the assumption of a nonvariable nuclear source, ranges from 0.02 to > 12; 7/19 exceed unity. Small values fit well with a heavily obscured AGN in which only a small fraction of the ionizing output escapes to be traced by surrounding gas. However, large values may require that the AGN has faded over tens of thousands of years, giving us several examples of systems in which such dramatic long-period variation has occurred; this is the only current technique for addressing these timescales in AGN history. The relative numbers of faded and non-faded objects we infer, and the projected extents of the ionized regions, give our estimate (0.2–2×10 5 years ) for

The organizational empowerment scale

Abstract: The purpose of the present research is to develop a reliable and valid scale to distinguish and measure the three environmental factors of dynamic structural framework, control of workplace decisions, and fluidity in information sharing that are conceptually related to and affect an employee's perception of empowerment. By quantifying the environmental factors that facilitate empowerment through a valid and reliable scale human resource departments will be provided with information that will suggest environmental changes they can implement to improve perceptions of empowerment on the part of employees. Strengths and weaknesses of the scale developed, the organizational empowerment scale, are also discussed.