Georgetown University

About: Georgetown University is a education organization based out in Washington D.C., District of Columbia, United States. It is known for research contribution in the topics: Population & Cancer. The organization has 23377 authors who have published 43718 publications receiving 1748598 citations. The organization is also known as: GU & Georgetown.

Differences in Governance Practices between U.S. and Foreign Firms: Measurement, Causes, and Consequences

Abstract: We construct a firm-level governance index that increases with minority shareholder protection. Compared with U.S. matching firms, only 12.68% of foreign firms have a higher index. The value of foreign firms falls as their index decreases relative to the index of matching U.S. firms. Our results suggest that lower country-level investor protection and other country characteristics make it suboptimal for foreign firms to invest as much in governance as U.S. firms do. Overall, we find that minority shareholders benefit from governance improvements and do so partly at the expense of controlling shareholders. (JEL G32, 34, 38) Using the well-known definition from Shleifer and Vishny (1997), governance consists of the mechanisms that ensure minority shareholders receive an appropriate return on their investment. Governance depends on both country-level as well as firm-level mechanisms. The country-level governance mechanisms

A randomized controlled trial of prednisone in Alzheimer’s disease

Abstract: To the Editor: We read with interest the article by Aisen et al.,1 who found that low doses of prednisone are not effective in AD. In the article, inflammatory processes are discussed in the pathophysiology of dementia, and corresponding therapeutic approaches are pursued. However, no clear clinical evidence for this exciting hypothesis has been established yet. To acquire information about the inflammatory activity of patients with expected dementia transferred to our ward, we investigated eosinophilic cationic protein (ECP) in serum. ECP is a sensitive marker of inflammatory processes and often used as a marker in clinical studies.2 We have 41 patients (mean age 73.8 years, SD 7.8; 7 men, 34 women) in our study. …

Emergence and frustration of magnetism with variable-range interactions in a quantum simulator.

Abstract: Frustration, or the competition between interacting components of a network, is often responsible for the emergent complexity of many-body systems. For instance, frustrated magnetism is a hallmark of poorly understood systems such as quantum spin liquids, spin glasses, and spin ices, whose ground states can be massively degenerate and carry high degrees of quantum entanglement. Here, we engineer frustrated antiferromagnetic interactions between spins stored in a crystal of up to 16 trapped 171Yb+ atoms. We control the amount of frustration by continuously tuning the range of interaction and directly measure spin correlation functions and their coherent dynamics. This prototypical quantum simulation points the way toward a new probe of frustrated quantum magnetism and perhaps the design of new quantum materials.

2003 report of the intestine transplant registry: a new era has dawned.

Abstract: The intestine is more difficult to transplant than other solid organs due to its strong expression of histocompatibility antigens, large numbers of resident leukocytes, and colonization with microorganisms.1 Early efforts to transplant the small bowel failed due to refractory graft rejection and sepsis.2 Outcomes improved during the early 1990s, but survival rates were still inferior to other organ transplants.3,4 Over the past 5 years, individual centers have reported improved outcomes with better long-term intestinal engraftment.5–8 Herein, we analyze registry data to determine the scope and success of intestine transplantation in the current era.