Search results for "Figure"
showing 10 items of 239 documents
HEMT for low-noise microwaves: CAD-oriented performance evaluation
1995
This paper shows how a graphic processing of low-noise HEMT's small signal parameters, allows evaluating and comparing the actual performance obtainable in front-end applications. HEMT's tradeoff charts which solve tradeoffs among the basic low-noise amplifier performance are reported. Figures of merit for microwave low-noise HEMT which represent a fast way of evaluating HEMT in actual working conditions and of selecting the proper transistor, are defined. As an example, the tradeoff charts and the figures of merit of two HEMT's (Fujitsu FHR02FH, Sony 2SK677) and a pseudomorphic-HEMT (Celeritek CFB001-03) are reported and compared with the data sheets. © 1995, IEEE. All rights reserved.
2-D approach to the analysis of semianechoic chambers using a hybrid technique
2003
Semianechoic chambers are the most widely used emplacements for electromagnetic compatibility (EMC) tests. In this work a new and efficient technique for the analysis of 2-D simplified model of a chamber with arbitrary absorber is introduced and validated Some advanced results are presented, and a 2-D figure of merit for studying the overall behaviour of the chamber is proposed.
Enhanced thermoelectric performance in the p-type half-Heusler (Ti/Zr/Hf)CoSb0.8Sn0.2 system via phase separation
2014
A novel approach for optimization of the thermoelectric properties of p-type Heusler compounds with a C1b structure was investigated. A successful recipe for achieving intrinsic phase separation in the n-type material based on the TiNiSn system is isoelectronic partial substitution of Ti with its heavier homologues Zr and Hf. We applied this concept to the p-type system MCoSb0.8Sn0.2 by a systematic investigation of samples with different compositions at the Ti position (M = Ti, Zr, Hf, Ti0.5Zr0.5, Zr0.5Hf0.5, and Ti0.5Hf0.5). We thus achieved an approximately 40% reduction of the thermal conductivity and a maximum figure of merit ZT of 0.9 at 700 °C. This is a 80% improvement in peak ZT fr…
Figure della maternità e itinerari dell’attesa negli oggetti del Museo etnografico siciliano Giuseppe Pitrè
2023
Il contributo propone una riflessione sul tema della maternità che lega, come un filo rosso, gli oggetti del Museo etnografico siciliano Giuseppe Pitrè e ne struttura la narrazione. Lo sguardo rivolto alle collezioni e al loro ordinamento restituisce la centralità di una tematica che riflette il senso profondo della cultura che gli oggetti comunicano e svela, attraverso i suoi simboli, i significati contestuali delle sue figure: le madri e i loro corpi, le madrine e i loro ruoli, le levatrici e le loro potenzialità. The contribution proposes a reflection on the theme of motherhood that links the objects of the Sicilian Ethnographic Museum Giuseppe Pitrè as a core idea and a narrative struct…
The Bias toward the Right Side of Others Is Stronger for Hands than for Feet
2021
As shown by a series of previous studies, ambiguous human bodies performing unimanual or unipedal actions tend to be perceived more frequently as right-handed or right-footed rather than left-handed or left-footed, which indicates a perceptual and attentional bias toward the right side of others&rsquo
Scaling the Analytical Information Given by Several Types of Colorimetric and Spectroscopic Instruments Including Smartphones: Rules for Their Use an…
2021
The analytical information given by different types of instruments was scaled in order to establish suitably the figures of merit of a given methodology based on color measurements. Different lab and portable instruments, including smartphones with and without a miniaturized spectrophotometer accessory, have been tested. In order to obtain broad information and using objective criteria, these instruments have been compared from (1) the analytical point of view, considering mainly the detection limit (limits of detection [LODs]), selectivity, accuracy and intra- and interday precision, size, components, and costs; and (2) the environmental point of view, based on their footprint as kilograms…
Mapping the political toponymy of educational namescapes: A quantitative analysis of Romanian school names
2019
Abstract This study sets out to map the political toponymy of Romanian schooling network. Starting from the theoretical premise that national memory is toponymically inscribed, inter alia, on a series of public organizations that form an institutional namescape, the paper reads the Romanian historical memory through the looking glass of school names. Exhaustive data was collected for the Romanian secondary schools bearing a nominal identity (N = 2850). Data were analyzed in terms of the ethnic and gender distribution, the social (occupational), spatial, and historical structures of the Romanian educational namescape. Our findings reveal that the political toponymy of the Romanian schooling …
Mans mnemòniques en l’Ars demonstrativa de Ramon Llull
2014
Aquest article recupera el concepte d’art de la memòria aplicat a les obres de Ramon Llull a partir de la presentació i el comentari de figures de mans amb finalitats mnemotècniques, especulatives i predicadores, que es troben en els manuscrits lul·lians de l’Ars demonstrativa –escrita el 1283– datats del segle xiii i el xvi. En els manuscrits de Venècia (Bibl. Marciana, Lat. VI. 200), de Bèrgam (MA 365) i de San Candido (B. della Collegiata, VIII C.8), la mà està vinculada a la figura S de l’Ars demonstrativa. En el ms &.IV.6 de l’Escorial, en canvi, la mà representa la figura A. El precedent més rellevant d’aquesta iconografia manual és la mà guidoniana, en l’àmbit musical, juntament amb …
Recensione a BART HUELSENBECK, Figures in the Shadows. The Speech of Two Augustan-Age Declaimers, Arellius Fuscus and Papirius Fabianus, Berlin-Bosto…
2022
Review of the volume that is configured as an essay on the declamatory phenomenon as a whole, but above all as a reading entirely internal to the first corpus of declamatory texts by Seneca il Vecchio that has come down to us