1.1 Method 8070 is a gas chromatographic (GC) method applicable to the determination of nitrosamine in aqueous matrices such as groundwater and municipal and industrial discharges. It is also applicable to solid matrices such as soils, sediments, and sludges. Specifically, this method covers the determination of the following compounds:

Abstract Various techniques are available to quantify recharge; however, choosing appropriate techniques is often difficult. Important considerations in choosing a technique include space/time scales, range, and reliability of recharge estimates based on different techniques; other factors may

As the Netflix Prize competition has demonstrated, matrix factorization models are superior to classic nearest-neighbor techniques for producing product recommendations, allowing the incorporation of additional information such as implicit feedback, temporal effects, and confidence levels. Modern

of an overview and make many undesirable compactions, often preventing desirable ones. Loops are handled using the reducible property of most flow graphs. The loop handling technique permits the operations to move around loops, as well as into loops where appropriate. Trace scheduling is developed on a

to match the appropriate methods with the underlying biological questions for several common problems in ecology and conservation (assessing population structure; measuring dispersal and hybridization; and forensics and mixture analysis). We also identify several topics for future research that should

Social scientists rarely take full advantage of the information available in their statistical results. As a consequence, they miss opportunities to present quantities that are of greatest substantive interest for their research and express the appropriate degree of certainty about these quantities

This paper investigates a novel computational problem, namely the Composite Residuosity Class Problem, and its applications to public-key cryptography. We propose a new trapdoor mechanism and derive from this technique three encryption schemes: a trapdoor permutation and two homomorphic

are implemented in simulation, on robots in the laboratory and aboard DARPA's HMMWV-based Unmanned Ground Vehicles. The technique has been integrated with the Autonomous Robot Architecture (AuRA) and the UGV Demo II architecture. The results demonstrate the value of various types of formations in autonomous

& DH techniques in which air is used as a medium to carry water in the form of vapor. In this paper, appropriate techniques reviewed include the usage of passive and active systems, which are operated with or without the support of solar energy. Use of fog harvesting, and thermo-electric module

Multilayer neural networks trained with the back-propagation algorithm constitute the best example of a successful gradientbased learning technique. Given an appropriate network architecture, gradient-based learning algorithms can be used to synthesize a complex decision surface that can classify