Hyperbolic dimension of Julia sets of meromorphic maps with logarithmic tracts

We prove that for meromorphic maps with logarithmic tracts (e.g. entire or meromorphic maps with a finite number of poles from class $\mathcal B$), the Julia set contains a compact invariant hyperbolic Cantor set of Hausdorff dimension greater than 1. Hence, the hyperbolic dimension of the Julia set is greater than 1.Comment: 7 pages, 1 figur

A repeat sales index for office buildings in New York City, 1900-2000

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2002.Includes bibliographical references.This paper comments on one of the real estate and financial world's most common adages: that real estate is a safe long-term investment that will perform equal to or exceed other common investments, particularly over long stretches of time. With data drawn from a wide range of primary and secondary sources, a repeat sales index of large (250,000+ square foot) commercial building sales in the Midtown and Downtown sub-markets of New York City is created to illustrate how these properties have performed as an inflation-adjusted investment from 1900 through 2000. It differs from other papers that focused on hedonic modeling of building attributes and locational characteristics or that created appraisal-, lease- or property-share returns indices. Although our findings were not statistically significant, appreciation is found to be rather flat over time, appreciating on average between 1/4 to 2/3 percent per year and mirrors the findings of Eichholtz 1997 and Eichholtz & Geltner 2002. This suggests that while commercial office properties may provide investment opportunities when purchased and sold at the right points in the cycle, it tends to under-perform other investment options when carried over time.by Cesarina A. Templeton and Mark S. Baranski.S.M

Empowered or exploited? Analyzing the attitudes of unpaid community health workers in Amhara, Ethiopia

The Women’s Development Army (WDA), an all-female workforce of unpaid Community Health Workers (CHW), is Ethiopia’s answer to improving rural health. Through the WDA, Ethiopia’s government says it is empowering women to spark change in their community by disseminating healthy behaviors and by advocating on their own behalf to health officials. At the same time, they serve at the bottom of a hierarchical health system and are potentially exploited by the government for their unpaid labor. Analysis of 2015 survey data collected from leaders in the WDA in Amhara state, Ethiopia, shows that most women are grateful for the program as it improves their quality of life, but that most feel that their missions are directed by the government and that WDA leaders should be paid for their work. CHW empowerment and exploitation are essential topics of research to sustain and improve health outcomes around the world

A randomized trial of a lab-embedded discourse intervention to improve research ethics.

We report a randomized trial of a research ethics training intervention designed to enhance ethics communication in university science and engineering laboratories, focusing specifically on authorship and data management. The intervention is a project-based research ethics curriculum that was designed to enhance the ability of science and engineering research laboratory members to engage in reason giving and interpersonal communication necessary for ethical practice. The randomized trial was fielded in active faculty-led laboratories at two US research-intensive institutions. Here, we show that laboratory members perceived improvements in the quality of discourse on research ethics within their laboratories and enhanced awareness of the relevance and reasons for that discourse for their work as measured by a survey administered over 4 mo after the intervention. This training represents a paradigm shift compared with more typical module-based or classroom ethics instruction that is divorced from the everyday workflow and practices within laboratories and is designed to cultivate a campus culture of ethical science and engineering research in the very work settings where laboratory members interact

Determination of oxygen tension in the subcutaneous tissue of cosmonauts during the Salyut-6 mission

A polarographic technique was used to measure the oxygen tension in subcutaneous tissue of the forearm of a cosmonaut prior to, after, and on the fourth day of a space mission performed by Salut-6. A drop in the oxygen exchange rate in the peripheral tissues during weightlessness was observed. The mechanisms of this change are studied, taking into consideration the blood distribution in the organism and microcirculation disorders reflected by a decreased blood flow rate in arterial-venous junctions

Investigation of cooling properties of the gaseous medium of a space station

An investigation of cooling properties of the gaseous medium was performed in the biosatellite Kosmos-936 as well as in the orbital complexes Soyuz-28/Salyut-6 and Soyuz-30/Salyut-6 with the aid of an especially constructed electric dynamic catathermometer. In this instrument current was measured which was necessary to keep a steady settled temperature of the sensing device. The investigation was performed because of the disturbed heat exhange of the human body caused by lack of natural convection in weightlessness. The instrument also enabled objective estimation of the temperature of the cosmonaut's ody in six optionally selected regions. The results obtained by means of the catathermometer will also enable defining the appropriate hygienic conditions of the gaseous medium of space stations

FAST-NMR - Functional Annotation Screening Technology Using NMR Spectroscopy

An abundance of protein structures emerging from structural genomics and the Protein Structure Initiative (PSI) are not amenable to ready functional assignment because of a lack of sequence and structural homology to proteins of known function. We describe a high-throughput NMR methodology (FAST-NMR) to annotate the biological function of novel proteins through the structural and sequence analysis of protein-ligand interactions. This is based on basic tenets of biochemistry where proteins with similar functions will have similar active sites and exhibit similar ligand binding interactions, despite global differences in sequence and structure. Protein-ligand interactions are determined through a tiered NMR screen using a library composed of compounds with known biological activity. A rapid co-structure is determined by combining the experimental identification of the ligand-binding site from NMR chemical shift perturbations with the proteinligand docking program AutoDock. Our CPASS (Comparison of Protein Active Site Structures) software and database is then used to compare this active site with proteins of known function. The methodology is demonstrated using unannotated protein SAV1430 from Staphylococcus aureus