Turbulent flow in a rapidly rotating stably stratified fluid (quasi-geostrophic turbulence) commonly decays toward a stable pattern of large-scale jets or vortices. A formula for the most probable three-dimensional end state, the maximum entropy state (MES), is derived using a form of Lynden-Bell statistical mechanics. The MES is determined by a set of integral invariants, including energy, as ...

This article examines the influence of social networks and value congruence on turnover intention among public and nonprofit employees. We argue that employees exist in social networks inside and outside their organization, and these networks shape employee attitudes and behavior. To illustrate this theory, we use turnover intention. A strong and positive intraorganizational social network char...

Pork producers have identified the indoor environment as one of their highest concerns within the industry, citing it as one of the adverse factors in recruiting and maintaining qualified people to work in swine facilities. Producers frequently name air quality problems as prime causes for high employee turnover in the swine production industry. Clearly, efforts to improve air quality in swine ...

Using rational design, an engineered myoglobin-based catalyst capable of catalyzing the cyclopropanation of aryl-substituted olefins with catalytic proficiency (up to 46,800 turnovers) and excellent diastereo- and enantioselectivity (98-99.9%) was developed. This transformation could be carried out in the presence of up to 20 g L(-1) olefin substrate with no loss in diastereo- and/or enantiosel...

At present, carcinogenic models imply that all individuals in a population are susceptible to cancer. These models either ignore a fall of the cancer incidence rate at old ages, or use some poorly identifiable parameters for its accounting. In this work, a new heuristic model is proposed. The model assumes that, in a population, only a small fraction (pool) of individuals is susceptible to canc...

The incidence function model (IFM) uses area and connectivity to predict metapopulation dynamics. However, false absences and missing data can lead to underestimates of the number of sites contributing to connectivity, resulting in overestimates of dispersal ability and turnovers (extinctions plus colonizations). We extend estimation methods for the IFM by using a hierarchical Bayesian model to...

The creation of enzymes capable of catalyzing any desired chemical reaction is a grand challenge for computational protein design. Using new algorithms that rely on hashing techniques to construct active sites for multistep reactions, we designed retro-aldolases that use four different catalytic motifs to catalyze the breaking of a carbon-carbon bond in a nonnatural substrate. Of the 72 designs...

In Lucan Way’s insightful, highly structural account of the color revolutions, they had to happen.1 Each was separately determined by the weakness of the authoritarian regimes. As Way puts it, “regime collapses have resulted more from authoritarian weakness than opposition strength” (62). For Way, it is even misleading to conceptualize these events as revolutions; they were authoritarian turnov...

This paper examines turnover effects on transactive memory (TM) under four task conditions. The first section employs a contingency framework and describes the structural features of knowledge networks and communication networks in TM systems that match each task condition. The second part analyzes the effects of turnover on TM from a network perspective. The findings suggest that, contrary to ...

Objective. In recent years, New Mexico has prioritized integrated treatment for cooccurring mental health and substance use disorders within its public behavioral health system. This report describes factors likely to be important when implementing evidence-based practices (EBPs) in community agencies. Methods. Our mixed-method research design consisted of observations, semistructured interview...