نتایج جستجو برای: freq
تعداد نتایج: 234 فیلتر نتایج به سال:
Deployment of distributed renewable energy resources is increasing rapidly, which is leading to growing concerns over the impact of distributed power electronics energy converters on grid stability. In general, power electronic coupled systems do not provide frequency or voltage support through feedback compensation. This is leading to changes in utility interconnection requirements for distrib...
In the standard Huffman coding problem, one is given a set of words and for each word a positive frequency. The goal is to encode each word w as a codeword c(w) over a given alphabet. The encoding must be prefix free (no codeword is a prefix of any other) and should minimize the weighted average codeword size ∑ w freq(w) |c(w)|. The problem has a well-known polynomial-time algorithm due to Huff...
Background and Objective: There are many chemical, physical and biological hazards which are threatening the dentists' health. In this study we assessed the effect of noise on Zanjan dentists hearing loss as one of the dentistry physical hazards. Materials and Methods: This cross sectional study was performed on all zanjan dentists in 2006-7. All dentists were examined by audiometer (CA76 and A...
This section presents detailed results for our study for RQ1 using the APFD metric. For each application, we divide the prioritization criteria into two sets (static and usage event-based) and present them in two graphs to better show the trends. The graphs are shown in log-scale. The controls (G-Best, Random, and G-Worst) appear in each graph. We also present the APFD values for the different ...
Vagus nerve stimulation (VNS) is an approved therapy for treatment of epilepsy and depression. While also shown to be promising in several preclinical and clinical studies to treat cardiovascular diseases, optimal therapeutic stimulation paradigms are still under investigation. Traditionally, parameters such as frequency, current, and duty cycle are used to adjust the efficacy of VNS therapy. T...
Cohen’s kappa coefficient has become a standard method for measuring the degree of agreement between two raters. Confidence intervals for kappa and weighted kappa based on its asymptotic variance are available in the SAS system through the FREQ procedure. However, this variance can become unreliable as sample size decreases or as kappa approaches unity. This paper presents a SAS macro for calcu...
Differential item functioning (DIF), as an assessment tool, has been widely used in quantitative psychology, educational measurement, business management, and insurance and healthcare industries. The purpose of DIF analyses is to detect response differences of items in questionnaires, rating scales, or tests across different subgroups (e.g., gender), while controlling for ability level. There a...
Abstract. To investigate the cloud phase and macrophysical properties over Southern Ocean (SO), Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Mobile Facility (AMF2) was installed on Australian icebreaker research vessel (R/V) Aurora Australis during Measurements Aerosols, Radiation, Clouds (MARCUS) field campaign (41 to 69∘ S, 60 160∘ E) from October 2017 March 2018. examin...
We studied the maternally inherited chloroplast DNA polymorphism at three microsatellite loci of 157 Quercus robur trees from 38 native populations in Lithuania. found high diversity eight haplotypes Balkan lineage A (frequency 0.75) and “German” subbranch (freq. 0.12), western eastern Italian lineages C 0.05 0.06, respectively), Iberian B 0.03). The were geographically well structured (among p...
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