The study of macroevolution, here defined simply as evolution above the species level, has seen a growing appreciation of the role of physical factors in shaping large-scale evolutionary patterns. Many of the major biotic turnovers, extinctions, and radiations that had once been attributed to direct competitive replacements or adaptive breakthroughs are now seen as physically mediated. Asteroid...

The labor market practices of higher education and health care institutions, or other large local employers, may influence beliefs in local labor markets about the fairness of employer practices. If a few large employers in a local economy choose “high road” labor market practices, with higher wages, more internal promotion, and lower employee turnover, other local employers may emulate them.. ...

Although it is well-established that children with Specific Language Impairment characteristically optionally inflect forms that require tense and agreement marking, their abilities with regards to derivational suffixation are less well understood. In this paper we provide evidence from children with Grammatical-Specific Language Impairment (G-SLI) that derivational suffixes, unlike tense and a...

* Correspondence: songjiwen@rbs. ruc.edu.cn Department of Organization and Human Resources, School of Business, Renmin University of China, Beijing 100872, China Department of Organization and Human Resources, School of Business, Renmin University of China, Room 909, Mingde Business Building, No. 59 Zhongguancun Street, Haidian District, Beijing 100872, People’s Republic of China Full list of a...

Little firm information exists about the global terrorist network, and the type of data used by network analysts—testimony of participants—is not available. Relying on newspaper and other media reports, some general conjectures about the network features of the terrorist organization can be offered: It may well be characterized by a high degree of connectivity and considerable redundancy. The d...

RecBCD is a processive, DNA-based motor enzyme with both helicase and nuclease activities. We used high-resolution optical trapping to study individual RecBCD molecules moving against applied forces up to 8 pN. Fine-scale motion was smooth down to a detection limit of 2 nm, implying a unitary step size below six basepairs (bp). Episodes of constant-velocity motion over hundreds to thousands of ...

The connection between strategic change and managerial turnover is studied within a model where managers decide on a …rm’s strategy. Managers as well as …rm owners care for the long-term success of a company. But managers are also interested in their own reputation. Due to reputational concerns managers may be reluctant to alter strategic decisions they themselves made in the past even when int...

Decades of turnover research have identified sets of factors that lead to voluntary employee turnover. However, existing models predict employee separation from organisations with an extremely limited predictive power, which rarely goes far beyond 30%. In contrast, marital research has identified a method for predicting separations which has an accuracy of over 90%, based on a couples’ reflecti...

Since the time of Darwin (1859) and Wallace (1869), islands have been regarded by scientists as a prime target for scrutinizing the forces that may influence evolution and diversification and important elements in biogeographic studies. This research aims to scrutinize whether and to what extent the composition and structure of past mammal insular faunas and their changes through time may provi...