نتایج جستجو برای: auxiliary potentials
تعداد نتایج: 125284 فیلتر نتایج به سال:
The auxiliary information has always been a source of improvement in estimation of certain population characteristics. Several estimators have been developed in single and two phase sampling which utilizes information on auxiliary variables as well as auxiliary attributes. The classical estimators which use information on auxiliary variables are the ratio and regression estimators as given in H...
how to cite this article: ververi a, vargiami e, v papadopoulou v, tryfonas d, zafeiriou di. brainstem auditory evoked potentials in boys with autism: still searching for the hidden truth. iran j child neurol. spring 2015;9(2):21-28. abstract objective brainstem auditory evoked potentials (baeps) have long been utilized in the investigation of auditory modulation and, more specifically, auditor...
A new concept of a photoremovable chiral auxiliary (PCA), based on the chiral benzoin chromophore, is introduced. This moiety can control the asymmetric formation of a Diels-Alder adduct, and then be removed in a subsequent photochemical step in high chemical and quantum yields. Selective formation of the products at up to 96% ee was observed in the presence of a Lewis acid catalyst in the case...
The aim of this paper is to formalize the second part of Chapter I Section 1 (1.9–1.19) in [12]. Definitions of Scott’s auxiliary and approximating relations are introduced in this work. We showed that in a meet-continuous lattice, the way-below relation is the intersection of all approximating auxiliary relations (proposition (40) — compare 1.13 in [12, pp. 43–47]). By (41) a continuous lattic...
The descent auxiliary problem method allows one to nd the solution of minimization problems by solving a sequence of auxiliary problems which incorporate a linesearch strategy. We derive the basic algorithm and study its convergence properties within the framework of innnite dimensional pseudoconvex minimization. We also introduce a partial descent type auxiliary problem method which partially ...
The use of auxiliary functions in nonparametric inference for theM/G/∞ queueinging model is considered. Estimation of the service time distribution G is challenging when only limited information about the busy/idle cycle is available. It is shown, using diagnostic plots of estimators, that a standard auxiliary function aimed at providing numerical stability fails in that regard but that a relia...
This paper sketches an HPSG analysis of the English auxiliary system, including nite negation, inversion, ellipsis, contraction, and the restricted distribution of unfocussed do. Negative and other adverbials are selected by the nite auxiliary , enabling a treatment of lexical variation in scope assignment. Auxiliary constructions are featurally distinguished from others, allowing a succinct ac...
This paper presents a family of soft-switching DC–DC converters with a simple auxiliary circuit consisting of a coupled winding and a pair of auxiliary switch and diode. The auxiliary circuit is activated in a short interval and thus the circulating conduction losses are small. With the auxiliary circuit, zero-voltage-switching (ZVS) and zero-current-switching are achieved for the main and auxi...
BACKGROUND In Myanmar, postpartum haemorrhage is the leading cause of maternal mortality and contributes to around 30% of all maternal deaths. The World Health Organization recommends training and supporting auxiliary midwives to administer oral misoprostol for prevention of postpartum haemorrhage in resource-limited settings. However, use of misoprostol by auxiliary midwives has not formally b...
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