We have examined the role of microbial communities on the surface of submersed macrophytes and in the underlying sediment for nitrification and denitrification in light and dark in NH -enriched microcosm systems using isotope 4 pairing and dilution techniques. Potamogeton pectinatus L. and intact sediment cores were collected in a shallow reservoir receiving treated municipal wastewater and con...

Uptake of atmospheric CO2 by the oceans and the export of carbon into deeper waters via the biological CO2 pump is driven by the production of particulate organic matter (POM). The elemental ratios of carbon, nitrogen, and phosphorus within POM follow Redfield ratios, suggesting that the concentrations of dissolved inorganic carbon (DIC) and nutrients decrease during new production correspondin...

In our formal runs, we have experimented with hybrid-term indexing and bigram indexing because hybrid-term indexing is a more distinct type of indexing strategy for better pooling and because bigram indexing usually gives robust (near) good results. We have also used our pseudo-relevance feedback (PRF) methods. In the informal runs, we have experimented with our previous re-ranking strategy, ca...

ABSTRACT In “Eden’s Geography Erodes Flood Geology” (The Westminster Theological Journal, Spring, 1996, pp. 123-154), John C. Munday argues that a cataclysmic view of a world-wide flood cannot be supported after an analysis of the geography of Eden. Munday bases his argument on two unproven assumptions: 1) Moses was the author of Genesis two and 2) the account was written from the perspective o...

The cardinality constraint is one of the most important constraints that can be established in a conceptual model. Nevertheless, not all CASE tools for developing database support the validation of this constraint due to the complexity associated to the referential integrity rules. So that, the contribution of this work concerns to provide PANDORA CASE (a tool used for learning and developing d...

This document summarizes the proposals before the SQL3 committees to allow the addition of tables with valid-time and transaction-time support into SQL/Temporal, and explains how to use these facilities to migrate smoothly from a conventional relational system to one encompassing temporal support. Initially, important requirements to a temporal system that may facilitate such a transition are m...

Dynamics of supersymmetric monopoles are studied in the low energy approximation. A conjecture for the exact moduli space metric is given for all collections of fundamental monopoles of distinct type, and various partial confirmations of the conjecture are outlined. Upon the quantization of the resulting multi-monopole dynamics in the context of N = 4 supersymmetric Yang-Mills-Higgs theories, o...

SQL3 generalizes the relational model into an object model offering abstract data types, multiple inheritance, and dynamic polymorphism. Tables may then contain collections (multisets) of objects, and sets and lists are defined as closely related collection types. By specifying an SQL-Table type template to correspond to the existing Table concept, it is possible to treat sets and lists as subt...

Neurons and networks in the cerebral cortex must operate reliably despite multiple sources of noise. To evaluate the impact of both input and output noise, we determine the robustness of single-neuron stimulus selective responses, as well as the robustness of attractor states of networks of neurons performing memory tasks. We find that robustness to output noise requires synaptic connections to...

Business groups are a common type of enterprise in late-developing countries, yet their existence appears to be at odds with extant theory in strategic management. Drawing on Schumpeter, we suggest that entrepreneurs in late development build a business group by engaging in a distinct type of innovation. Instead of creating new products they leverage local and foreign contacts to combine foreig...