The Frequency of Occurrence of Air Masses Over Twelve European Cities.

1983 ◽  
Author(s):  
Marvin D. Kays ◽  
John T. Allen ◽  
Louis D. Duncan
Keyword(s):  
Frequency Of Occurrence ◽  
Air Masses ◽  
European Cities

scholarly journals Synoptic control over winter snowfall variability observed in a remote site of Apennine Mountains (Italy), 1884–2015

2021 ◽  
Author(s):  
Vincenzo Capozzi ◽  
Carmela De Vivo ◽  
Giorgio Budillon
Keyword(s):  
North Atlantic ◽  
Large Scale ◽  
Eastern Mediterranean ◽  
Winter Season ◽  
The Arctic ◽  
Positive Trend ◽  
Frequency Of Occurrence ◽  
Remote Site ◽  
Cold Air ◽  
Air Masses

Abstract. This work presents a new, very long snowfall time series collected in a remote site of Italian Apennine mountains (Montevergine Observatory, 1280 m a.s.l.). After a careful check, based on quality control tests and homogenization procedures, the available data (i.e. daily height of new snow) have been aggregated over winter season (December-January-February) to study the long-term variability in the period 1884–2020. The main evidences emerged from this analysis lie in (i) the strong interannual variability of winter snowfall amounts, in (ii) the absence of a relevant trend from late 19th century to mid-1970s, in (iii) the strong reduction of the snowfall amount and frequency of occurrence from mid-1970s to the end of 1990s (−45 and −17 % compared to the average recorded in 1884–1975 period, respectively), and in (iv) the increase of average snowfall amount and frequency of occurrence in the last 20 years. Moreover, this study shed light on the relationship between the snowfall variability observed in Montevergine and the large-scale atmospheric circulation. Six different synoptic types, describing the meteorological scenarios triggering the snow events in the study area, have been identified by means of a cluster analysis, using two essential atmospheric variables, the 500-hPa geopotential height and the sea level pressure (both retrieved from the third version of Twentieth Century Reanalysis dataset). Such patterns trace out scenarios characterized by the presence of a blocking high-pressure anomaly over Scandinavia or North Atlantic and by a cold air outbreak, involving both maritime and continental cold air masses. A further analysis demonstrates that the identified synoptic types are strongly related with different teleconnection patterns, i.e. the Arctic Oscillation (AO), the Eastern Atlantic Western Russia (EAWR), the Eastern Mediterranean Pattern (EMP), the North Atlantic Oscillation (NAO) and the Scandinavia pattern (SCAND), that govern the European winter atmospheric variability. The relevant decline in snowfall frequency and amounts between 1970s and 1990s can be mainly ascribed to the strong positive trend of AO and NAO indices, which determined, in turn, a decrease in the incidence of patterns associated to the advection, in central Mediterranean area, of moist and cold arctic maritime air masses. The recent increase in average snowfall amounts can be explained by the reverse trend of AO index and by the prevalence of neutral or negative EAWR pattern.

TEM studies of tweed microstructures in annealed amelia albite

1990 ◽  
Vol 48 (4) ◽  
pp. 1064-1065
Author(s):  
Y. J. Kim ◽  
D. M. Henderson
Keyword(s):  
Annealing Time ◽  
The Other ◽  
Frequency Of Occurrence ◽  
Systematic Trend ◽  
Tweed Structure

Natural Amelia albite (Ab99.3An0.1Or0.6) annealed at 1073° and 924°C for various periods up to 140 days has been studied by NMR. TEM studies of the same sample revealed a distinct tweed microstructure in some samples annealed at both 1073°C and 924°C. On the whole, the quasi-regular tweed has a periodicity of 100 - 200 Å in both directions, one nearly normal to b* and the other approximately parallel to b*, which gives rise to two-directional streaking in SADP’s (Fig. 1 and 2). However, there are some differences in the tweed structure developed on annealing at 1073°C and at 924°C in albite.Albite samples annealed at 1073° show a systematic trend in their development of tweed structures: the regularity, periodicity, and frequency of occurrence increase with annealing time during the first 3 days, and then decrease gradually until no tweed microstructures are seen in samples annealed for more than 15 days. The tweed structure proceeds locally to form one-directional twin-like microstructures.

An Investigation of the Assumptions Underlying the Scoring System of the Arizona Articulation Proficiency Scale: Revised

1979 ◽  
Vol 10 (4) ◽  
pp. 241-245
Author(s):  
Richard J. Schissel ◽  
Linda B. James
Keyword(s):  
Scoring System ◽  
Frequency Of Occurrence

This study examines the assumptions underlying the scoring system of the Arizona Articulation Proficiency Scale: Revised. Twenty-one children between the ages of four years two months and six years 11 months were administered the Arizona Articulation Proficiency Scale: Revised and the Screening Deep Test of Articulation. The subjects' performance on the two tests was compared for the phones: [s], [l], [r], [t∫], [θ], [∫], [k], [f], and [t]. Results suggested that 1) the production of most sounds in only two contexts does not necessarily reflect the accuracy of production of those sounds in other contexts, and 2) for the sounds tested, the weightings assigned on the basis of their frequency of occurrence rather than the frequency with which they were misarticulated overestimated the extent of many articulation errors.

Teachers' Stereotypes of Children Who Wear Hearing Aids

1981 ◽  
Vol 12 (3) ◽  
pp. 139-144 ◽  
Author(s):  
Cletus G. Fisher ◽  
Kenneth Brooks
Keyword(s):  
Elementary School ◽  
School Child ◽  
Hearing Aids ◽  
Hearing Aid ◽  
Social Implications ◽  
Elementary School Child ◽  
Classroom Teachers ◽  
Frequency Of Occurrence ◽  
Service Training

Classroom teachers were asked to list the traits they felt were characteristic of the elementary school child who wears a hearing aid. These listings were evaluated according to the desirability of the traits and were studied regarding frequency of occurrence, desirability, and educational, emotional, and social implications. The results of the groupings are discussed in terms of pre-service and in-service training.

Direct coding for frequency of occurrence

1991 ◽  
Author(s):  
Iohn Jonides ◽  
Caren M. Jones
Keyword(s):  
Frequency Of Occurrence

Computerization of the Patient History -Patient Answers Compared with Medical Records

1986 ◽  
Vol 25 (04) ◽  
pp. 222-228 ◽  
Author(s):  
M. J. Quaak ◽  
R. F. Westerman ◽  
J. A. Schouten ◽  
A. Hasman ◽  
J. H. Bemmel
Keyword(s):  
Internal Medicine ◽  
Medical Records ◽  
Patient Record ◽  
Frequency Of Occurrence ◽  
History Taking ◽  
Patient History ◽  
Patient Complaints ◽  
Computerized Patient Record ◽  
Extensive Information ◽  
Experienced Physician

SummaryComputerized medical history taking, in which patients answer questions by using a terminal, is compared with the written medical record for a group of 99 patients in internal medicine. Patient complaints were analysed with respect to their frequency of occurrence for all important tracts, such as the respiratory, the gastro-intestinal and the uro-genital tracts. About 36% of over 3,200 patient answers were identical in the patient record and the written record, but a considerable percentage of complaints (56%), that were present in the patient record, were missing in the written record; the reverse was true for 4.5%. A computerized patient record appears to contain more extensive information about patient complaints, still to be interpreted by the experienced physician.

Utilizing next-generation sequencing to identify prey DNA in western North Atlantic grey seal Halichoerus grypus diet

2020 ◽  
Vol 655 ◽  
pp. 227-240
Author(s):  
KR Flanders ◽  
ZH Olson ◽  
KA Ono
Keyword(s):  
Next Generation Sequencing ◽  
Feeding Habits ◽  
Atlantic Menhaden ◽  
Halichoerus Grypus ◽  
Frequency Of Occurrence ◽  
Grey Seal ◽  
Next Generation ◽  
Significant Difference ◽  
Generation Sequencing ◽  
Seal Diet

Increasing grey seal Halichoerus grypus abundance in coastal New England is leading to social, political, economic, and ecological controversies. Central to these issues is the foraging ecology and diet composition of the seals. We studied grey seal feeding habits through next-generation sequencing of prey DNA using 16S amplicons from seal scat (n = 74) collected from a breeding colony on Monomoy Island in Massachusetts, USA, and report frequency of occurrence and relative read abundance. We also assigned seal sex to scat samples using a revised PCR assay. In contrast to current understanding of grey seal diet from hard parts and fatty acid analysis, we found no significant difference between male and female diet measured by alpha and beta diversity. Overall, we detected 24 prey groups, 18 of which resolved to species. Sand lance Ammodytes spp. were the most frequently consumed prey group, with a frequency of occurrence (FO) of 97.3%, consistent with previous studies, but Atlantic menhaden Brevoortia tyrannus, the second most frequently consumed species (FO = 60.8%), has not previously been documented in US grey seal diet. Our results suggest that a metabarcoding approach to seal food habits can yield important new ecological insights, but that traditional hard parts analysis does not underestimate consumption of Atlantic cod Gadus morhua (FO = 6.7%, Gadidae spp.) and salmon Salmo salar (FO = 0%), 2 particularly valuable species of concern.

Modernism, Space and the City

2019 ◽  
Author(s):  
Andrew Thacker
Keyword(s):  
Built Environment ◽  
Joseph Conrad ◽  
Jean Rhys ◽  
Transport Systems ◽  
Cultural Institutions ◽  
European Cities ◽  
Blaise Cendrars ◽  
Stephen Spender ◽  
Christopher Isherwood ◽  
The City

This innovative book examines the development of modernism in four European cities: London, Paris, Berlin, and Vienna. Focusing upon how literary and cultural outsiders represented various spaces in these cities, it draws upon contemporary theories of affect, mood, and literary geography to offer an original account of the geographical emotions of modernism. It considers three broad features of urban modernism: the built environment of the particular cities, such as cafés or transport systems; the cultural institutions of publishing that underpinned the development of modernism in these locations; and the complex perceptions of writers and artists who were outsiders to the four cities. Particular attention is thus given to the transnational qualities of modernism by examining figures whose view of the cities considered is that of migrants, exiles, or strangers. The writers and artists discussed include Mulk Raj Anand, Gwendolyn Bennett, Bryher, Blaise Cendrars, Joseph Conrad, T. S. Eliot, Christopher Isherwood, Hope Mirlees, Noami Mitchison, Jean Rhys, Sam Selon, and Stephen Spender.

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