USSR Space Life Sciences Digest, issue 30

This is the thirtieth issue of NASA's Space Life Sciences Digest. It contains abstracts of 47 journal papers or book chapters published in Russian and of three Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. The abstracts in this issue have been identified as relevant to 20 areas of space biology and medicine. These areas include: adaptation, biospheric research, cardiovascular and respiratory systems, endocrinology, equipment and instrumentation, gastrointestinal system, group dynamics, habitability and environmental effects, hematology, human performance, immunology, life support systems, mathematical modeling, metabolism, musculoskeletal system, neurophysiology, nutrition, psychology, radiobiology, and space biology and medicine

USSR Space Life Sciences Digest, issue 29

This is the twenty-ninth issue of NASA's Space Life Sciences Digest. It is a double issue covering two issues of the Soviet Space Biology and Aerospace Medicine Journal. Issue 29 contains abstracts of 60 journal papers or book chapters published in Russian and of three Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. A review of a book on environmental hygiene and a list of papers presented at a Soviet conference on space biology and medicine are also included. The materials in this issue were identified as relevant to 28 areas of space biology and medicine. The areas are: adaptation, aviation medicine, biological rhythms, body fluids, botany, cardiovascular and respiratory systems, developmental biology, digestive system, endocrinology, equipment and instrumentation, genetics, habitability and environment effects, hematology, human performance, immunology, life support systems, mathematical modeling, metabolism, musculoskeletal system, neurophysiology, nutrition, personnel selection, psychology, radiobiology, reproductive system, space biology and medicine, and the economics of space flight

Digest of Russian Space Life Sciences, issue 33

This is the thirty-third issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 55 papers published in Russian journals. The abstracts in this issue have been identified as relevant to the following areas of space biology and medicine: biological rhythms, body fluids, botany, cardiovascular and respiratory systems, developmental biology, endocrinology, equipment and instrumentation, gastrointestinal system, genetics, hematology, human performance, metabolism, microbiology, musculoskeletal system, neurophysiology, nutrition, operational medicine, psychology, radiobiology, and reproductive system

USSR space life sciences digest, issue 27

This is the twenty-fifth issue of NASA's Space Life Sciences Digest. It contains abstracts of 30 journal papers or book chapters published in Russian and of 2 Soviet monographs. Selected abstracts are illustrated with figures and tables from the original. The abstracts in this issue have been identified as relevant to 18 areas of space biology and medicine. These areas include: adaptation, aviation medicine, biological rhythms, biospherics, botany, cardiovascular and respiratory systems, endocrinology, enzymology, exobiology, habitability and environmental effects, hematology, immunology, metabolism, musculoskeletal system, neurophysiology, radiobiology, and space medicine. A Soviet book review of a British handbook of aviation medicine and a description of the work of the division on aviation and space medicine of the Moscow Physiological Society are also included

Stable and Synchronized: Harnessing Nonlinear Physics To Control Soliton Propagation In Microresonators

The premier instrument for timing the electromagnetic oscillations of lasers is the opticalfrequency comb. Optical frequency combs aid investigations of fundamental scientific questions, and they have an ever-growing list of applications. Still, frequency-comb systems usually occupy several cubic feet of space and consume large amounts of power. Access to portable, small-footprint frequency combs would revolutionize modern laser technology. In this thesis, I describe advances in chip-scale optical frequency combs based on nonlinear microresonator solitons (soliton microcombs). First, I describe demonstrations of key optical technologies using photonics-compatible or microfabricated components, including an optical-frequency synthesizer, an optical atomic clock, and direct frequency-comb spectroscopy of rubidium. One crucial aspect of these experiments was to realize the first f-2f self-referenced soliton microcomb (self-referenced frequency combs enable accurate and absolute frequency measurements). Next, I discuss the optical decoherence of soliton microcombs that is caused by microresonator-intrinsic thermodynamic fluctuations. I present the first thermal-noise-limited measurements of soliton microcombs and trace the measurements back to fundamental thermodynamics. Moreover, I introduce a laser cooling technique for mitigating soliton-microcomb thermal noise that resembles conventional laser cooling methods for atomic ensembles and optomechanics systems. Finally, I explore two emergent phenomena in soliton microcombs: thermal-noise correlations and breather-soliton synchronization. In the first case, a suitable microresonator group-velocity dispersion profile leads to multimode interactions that coherently cancel the transduction of thermal noise from the environment to the soliton. In the second case, soliton-microcomb breathing oscillations synchronize to subharmonics of either an externally-applied force or the soliton repetition rate.</p

CEO Compensation And Firm Performance: Is There Any Relationship?

Recent media and public attention has focused on CEO compensation.&nbsp; This study looks at the relationship between CEO compensation and several measures of firm performance across a wide variety of industries.&nbsp; The study used a database of CEO compensation for 200 large public companies which filed proxy statements with the SEC for 2007.&nbsp; Total CEO compensation consists of:&nbsp; base salary, cash bonuses, perks, stock awards, and option awards.&nbsp; The measures of firm performance were:&nbsp; company revenue, year-to-year change in net income, and year-to-year change in total shareholder return (TSR).&nbsp; Correlation and regression analysis were used to test various hypotheses.&nbsp; We expected that total CEO compensation and its components would be directly related to financial measures of company performance

Publisher’s Note: “Polymer drag reduction in exact coherent structures of plane shear flow” [Phys. Fluids 16, 3470 (2004)]

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69804/2/PHFLE6-16-12-4761-1.pd