1,721,106 research outputs found
Low-power, low-voltage BiCMOS comparators for approx.200MHz, 8bit operation
No full textTwo novel BiCMOS latched comparators operating at 3.3V with 8bit resolution are presented. They achieve approx.200MHz operation and exhibit lower power consumption than the conventional architecture. The first resembles a conventional bipolar latched comparator, with a variable load resistance which changes its value three times during the acquisition cycle. It achieves the highest speed and the lowest power consumption. The second includes a differential amplifier which unbalances a ground-referenced latch by current mirror action. It may be adapted to even lower supply voltages and exhibits negligible kick-back effects
On the use of matrix algebra for the description of EPROM failures
No full textA description of EPROM failures based on the use of Boolean matrices and operators is offered. It overcomes a number of problems which made previously available theories inapplicable to practical devices, and provides a useful tool for the analysis of test pattern efficiency
About the number of records to be acquired for histogram testing of A/D converters using synchronous sinewave and clock generators
No full textIntroduzione
No full textIl volume presenta i risultati del programma interuniversitario di ricerca La valutazione dell’impatto territoriale delle grandi polarità commerciali: factory outlet centre, multiplex, parchi commerciali. Un approccio interregionale: Piemonte, Lombardia, Emilia Romagna. Il progetto della ricerca, caratterizzata da un taglio interdisciplinare che integra concetti e metodologie operative derivati dai campi della pianificazione e dell’urbanistica, della geografia e dell’economia, è stato formulato congiuntamente da docenti e ricercatori del Dipartimento di Architettura e Pianificazione del Politecnico di Milano, del Dipartimento Interateneo Territorio del Politecnico di Torino e del Dipartimento di Economia dell’Università di Parma e la sua realizzazione è stata supportata dal contributo economico delle Regioni Piemonte, Lombardia ed Emilia Romagna
L'auto-Rorschach : facilitation de la relation et instrument d'analyse des problèmes d'identité. Étude réalisée chez des toxicomanes
No full textMax G., Max G., Morandi C., Migliarese M. L'auto-Rorschach : facilitation de la relation et instrument d'analyse des problèmes d'identité. Étude réalisée chez des toxicomanes. In: Bulletin de la Société française du Rorschach et des méthodes projectives, n°32, 1981. Les toxicomanies. pp. 87-95
Prodotti notevoli. Ricerca sui fattori di successo dei progetti di trasformazione urbana
No full textDeoxyribonucleic acid sequence of araBAD promoter mutants of Escherichia coli
No full textThe controlling site region for the araBAD operon is defined, in part, by two classes of cis-acting constitutive mutations. The aralc mutations allow low-level constitutive expression of ara-BAD in the absence of the positive regulatory protein coded for by the araC gene, whereas the araXc mutations allow expression of araBAD in the absence of the cyclic adenosine monophosphate receptor protein. Six independently isolated aralc mutations and three independently isolated araXc mutations were cloned onto the plasmid pBR322 using in vitro recombinant deoxyribonucleic acid techniques and in vivo recombination between plasmid and chromosomal deoxyribonucleic acid. The location of these mutations was determined by deoxyribonucleic acid sequence analysis. All of the aralc mutations occurred at position -35 within the araBAD promoter (+1 = messenger ribonucleic acid start for araBAD) and resulted from an AT leads to GC transition. All of the araXc mutations occurred at position -10 within the araBAD promoter and resulted from a GC leads to AT transition. Models are presented to explain the mode of action of the aralc and araXc mutations
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
- …
