نتایج جستجو برای: convenient variety
تعداد نتایج: 304768 فیلتر نتایج به سال:
This document or any other document produced within the SUSTELNET project does not represent the opinion of the European Commission. Neither the European Commission, nor any person acting on behalf of the Commission, is responsible for the use that might be made of the information arising from the SUSTELNET project. Abstract This report identifies the main factors at play with regard to the int...
Anticoagulation during extracorporeal circulation is achieved by a variety of protocols. 1 •2•3•4 ·5 Of those routinely used, the most convenient method of heparin management utilized the activated clotting time (ACT) and dose-response curve (DRC) as described by Bull.6 It has become apparent, however, that a number of factors other than heparin concentration influence the ACT. This study was d...
We derive a one-period look-ahead policy for finiteand infinite-horizon online optimal learning problems with Gaussian rewards. The resulting decision rule easily extends to a variety of settings, including the case where our prior beliefs about the rewards are correlated. Experiments show that the KG policy performs competitively against other learning policies in diverse situations. In the ca...
Efficient Estimation of Dynamic Panel Data Models: Alternative Assumptions and Simplified Estimation
This paper considers the estimation of dynamic models for panel data. It shows how to count and express the moment conditions implied by a variety of covariance restrictions. These conditions can be imposed in a GMM framework. Many of the moment conditions are nonlinear in the parameters. We derive a simple linearized estimator that is asymptotically as efficient as the nonlinear GMM estimator,...
employed by lipid chemists nuder a wide variety of conditions. Most recently, Kishimoto and Badin (1) described a closed reaction-tube procedure designed to mimnuze loss of HC1 from a methanolic solution. For several years we have used a convenient system in preparing esters of free fatty acids, or in transesterifymg various lipids. We have found it suitable for samples varying in weight from 5...
Growing amounts of multimedia data (alphanumeric, image, sound and video) are being captured with the increasing deployment of sensors. We present the image stack stream model or view of data as a convenient basis for both querying and visualizing the situation and changes through time of phenomena buried in the multitude of such variety of data. We outline briefly the requirements with motivat...
The direct a-arylation of cyclic and acyclic ethers with azoles has been achieved, which features a novel iron-catalyzed cross-dehydrogenative coupling (CDC) process. This practical oxidative method allowed the efficient C2-alkylation of a variety of (benzo)azoles constituting straightforward access to heterocycles of utmost medicinal significance and highlighting the convenient use of feedstoc...
Phenols, being readily available from naturally abundant lignins, are important future feedstocks for the renewable production of fuels, chemicals, and energy. Herein, a highly efficient Pd-catalyzed direct coupling of phenolic lignin model monomers and analogues with anilines to give cyclohexylamines using cheap and safe sodium formate as hydrogen donor is described. A variety of secondary and...
Mica is the substrate of choice for microscopic visualization of a wide variety of intricate nanostructures. Unfortunately, the lack of a facile strategy for its modification has prevented the on-mica assembly of nanostructures. Herein, we disclose a convenient catechol-based linker that enables various surface-bound metal-free click reactions, and an easy modification of mica with DNA nanostru...
The complexity of planning tasks have increased over the past decade. There is relatively poor understanding what the implications are of increased task complexity in planning and scheduling operations. Previous work in the behavorial sciences have investigated the concept of cognitive load, addressing both task complecity and task workload or stress, and have concluded that decision makers ten...
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