Regional variations in Pn velocity and their effect on the location of epicenters

1962 ◽  
Vol 52 (5) ◽  
pp. 1037-1046 ◽  
Author(s):  
Eugene Herrin ◽  
James Taggart
Keyword(s):  
United States ◽  
Least Squares ◽  
Least Squares Method ◽  
The United States ◽  
Western United States ◽  
Contour Map ◽  
Regional Variations ◽  
Pn Velocity ◽  
Order Of Magnitude ◽  
Recent Earthquakes

abstract Evidence from recent earthquakes and explosions is presented showing substantial regional variations in the velocity of Pn in the United States. These variations have a significant effect on the location of epicenters by the least-squares method. We have included a contour map of Pn velocity in the United States. A new method for computer location of epicenters is described, and is shown to decrease the error of location for events in the western United States by as much as an order of magnitude.

scholarly journals Analysis of rose exports to the U.S. and their impact on ecuadorian GDP period 2015-2019

2021 ◽  
Vol 25 (111) ◽  
pp. 78-84
Author(s):  
Haydee Yulan Negrete ◽  
Jorge Garcia Regalado ◽  
Deisy Medina Zambrano ◽  
Anthony Limones Salazar
Keyword(s):  
United States ◽  
Least Squares ◽  
Research Design ◽  
Design Methodology ◽  
Least Squares Method ◽  
The United States ◽  
Correlational Research ◽  
The Us ◽  
Bibliographic Search ◽  
The U.S

This paper aims to analyze the importance of rose exports to the US market over the total GDP of Ecuador and what is the importance of this market for the country's economy. A documentary research design methodology and part of a bibliographic search were used; In addition, a type of integral correlational research was used, applying the least squares method where the floriculture sector was taken into account, this time the subdivision of roses directed to the United States market. In conclusion, the export of roses to the US market does not have high explanatory significance, which is why it is recommended to use other variables for possible subsequent studies, in turn, the GDP of Ecuador for the period (2015-2019) does not suffer large variations due to this subdivision from the flowers. Keywords: exports, rose, GDP, Ecuador. References [1]A. Yagual., S. Lovato and M. Mite.,“Importancia de la exportación de flores sobre total exportaciones FOB no tradicionales en Ecuador 2012-2016”. Revista Espacios, 39(18), (2018). [2]PRO ECUADOR. (2018). www.proecuador.gob.ec. Obtenido de www.proecuador.gob.ec: https://www.proecuador.gob.ec/tag/rosas/ [3]EXPOFLORES. (2018). expoflores.com. Obtenido de expoflores.com: https://expoflores.com/informes-economicos-2015-2018/ [4]“Ficha Sectorial: Cultivo de Rosas”. Coorporación Financiera Nacional (CFN). Quito: Subgerencia de Análisis e Información(2017). [5]Banco Central del Ecuador. (2020). www.bce.fin.ec. [6]“Cifras Macroeconómicas del Ecuador”. Federación Nacional de Cámaras de Comercio del Ecuador Cámara de Comercio de Guayaquil, Departamento de Investigación y Proyectos, (2019). [7]S. Pino, H. Aguilar, A. Apolo, and L. Sisalema, “Aporte del sector agropecuario a la economía del Ecuador. Análisis crítico de su evolución en el período de dolarización. Años 2000 – 2016”. Revista Espacios, 39(32),(2018). [8]P. Alvarez, A. Crespo, F. Núñez, and C. Usabiaga, “Introducción de elementos autorregresivos”. Revista Dinámica de Sistemas en modelos de dinámica de sistemas, 2(1), 37-66 (2006).  

Writing Time in Metaphors

2018 ◽  
Author(s):  
Jennifer J. Smith
Keyword(s):  
United States ◽  
The United States ◽  
Western United States ◽  
Entire System ◽  
Language And Culture ◽  
Space Race ◽  
Do So

Coherence of place often exists alongside irregularities in time in cycles, and chapter three turns to cycles linked by temporal markers. Ray Bradbury’s The Martian Chronicles (1950) follows a linear chronology and describes the exploration, conquest, and repopulation of Mars by humans. Conversely, Louise Erdrich’s Love Medicine (1984) jumps back and forth across time to narrate the lives of interconnected families in the western United States. Bradbury’s cycle invokes a confluence of historical forces—time as value-laden, work as a calling, and travel as necessitating standardized time—and contextualizes them in relation to anxieties about the space race. Erdrich’s cycle invokes broader, oppositional conceptions of time—as recursive and arbitrary and as causal and meaningful—to depict time as implicated in an entire system of measurement that made possible the destruction and exploitation of the Chippewa people. Both volumes understand the United States to be preoccupied with imperialist impulses. Even as they critique such projects, they also point to the tenacity with which individuals encounter these systems, and they do so by creating “interstitial temporalities,” which allow them to navigate time at the crossroads of language and culture.

scholarly journals Efficacy and safety of fremanezumab in patients with migraine and inadequate response to prior preventive treatment: subgroup analyses by country of a randomized, placebo-controlled trial

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Egilius L. H. Spierings ◽  
Mikko Kärppä ◽  
Xiaoping Ning ◽  
Joshua M. Cohen ◽  
Verena Ramirez Campos ◽  
...  
Keyword(s):  
United States ◽  
Czech Republic ◽  
Adverse Events ◽  
Least Squares ◽  
The United States ◽  
Inadequate Response ◽  
Double Blind ◽  
Monthly Average ◽  
Preventive Medication ◽  
Subgroup Analyses

Abstract Background The FOCUS study evaluated the efficacy of migraine preventive medications across different countries within the same patient population, particularly for patients with difficult-to-treat migraine. These prespecified subgroup analyses evaluated efficacy by country in the FOCUS study of fremanezumab in adults with episodic migraine or chronic migraine and documented inadequate response to 2 to 4 migraine preventive medication classes. Methods Overall, 838 participants were enrolled in the FOCUS study, a randomized, double-blind, placebo-controlled, parallel-group, phase 3b study performed at 104 sites. For 12 weeks of double-blind treatment, patients were randomized (1:1:1) to quarterly fremanezumab, monthly fremanezumab, or matched placebo. The primary efficacy endpoint was the mean change from baseline in monthly average migraine days over 12 weeks of double-blind treatment, evaluated by country in these subgroup analyses. Results Of 14 countries contributing data, the Czech Republic (n = 188/838; 22%), the United States (n = 120/838; 14%), and Finland (n = 85/838; 10%) enrolled the most patients. Changes from baseline in monthly average migraine days over 12 weeks were significantly greater with fremanezumab versus placebo for patients in these countries: Czech Republic (least-squares mean difference versus placebo [95% confidence interval]: quarterly fremanezumab, − 1.9 [− 3.25, − 0.47]; P = 0.009; monthly fremanezumab, − 3.0 [− 4.39, − 1.59]; P < 0.001), the United States (quarterly fremanezumab, − 3.7 [− 5.77, − 1.58]; P < 0.001; monthly fremanezumab, − 4.2 [− 6.23, − 2.13]; P < 0.001), and Finland (quarterly fremanezumab, − 3.0 [− 5.32, − 0.63]; P = 0.014; monthly fremanezumab, − 3.9 [− 6.27, − 1.44]; P = 0.002). Results were comparable for the remaining 9 countries, with the least-squares mean difference versus placebo ranging from – 5.6 to – 2.4 with quarterly fremanezumab and from − 5.3 to − 1.5 with monthly fremanezumab. Incidences of serious adverse events and adverse events leading to discontinuation were low and comparable across countries and treatment groups. Conclusions Monthly and quarterly fremanezumab significantly reduced the monthly average number of migraine days versus placebo regardless of country and continent (North America versus Europe) in migraine patients with documented inadequate response to 2 to 4 migraine preventive medication classes. Trial registration ClinicalTrials.gov Identifier: NCT03308968.

scholarly journals Dermacentor variabilis is the Predominant Dermacentor spp. (Acari: Ixodidae) Feeding on Dogs and Cats Throughout the United States

2021 ◽  
Author(s):  
Kathryn T Duncan ◽  
Meriam N Saleh ◽  
Kellee D Sundstrom ◽  
Susan E Little
Keyword(s):  
United States ◽  
Spotted Fever ◽  
Rocky Mountain ◽  
The United States ◽  
Dermacentor Variabilis ◽  
Western United States ◽  
Its2 Region ◽  
Rrna Gene ◽  
Rocky Mountain Spotted Fever ◽  
Dermacentor Albipictus

Abstract Throughout North America, Dermacentor spp. ticks are often found feeding on animals and humans, and are known to transmit pathogens, including the Rocky Mountain spotted fever agent. To better define the identity and distribution of Dermacentor spp. removed from dogs and cats in the United States, ticks submitted from 1,457 dogs (n = 2,924 ticks) and 137 cats (n = 209 ticks) from veterinary practices in 44/50 states from February 2018-January 2020 were identified morphologically (n = 3,133); the identity of ticks from regions where Dermacentor andersoni (Stiles) have been reported, and a subset of ticks from other regions, were confirmed molecularly through amplification and sequencing of the ITS2 region and a 16S rRNA gene fragment. Of the ticks submitted, 99.3% (3,112/3,133) were Dermacentor variabilis (Say), 0.4% (12/3,133) were D. andersoni, and 0.3% (9/3,133) were Dermacentor albipictus (Packard). While translocation of pets prior to tick removal cannot be discounted, the majority (106/122; 87%) of Dermacentor spp. ticks removed from dogs and cats in six Rocky Mountain states (Montana, Idaho, Wyoming, Nevada, Utah, and Colorado) were D. variabilis, suggesting this species may be more widespread in the western United States than is currently recognized, or that D. andersoni, if still common in the region, preferentially feeds on hosts other than dogs and cats. Together, these data support the interpretation that D. variabilis is the predominant Dermacentor species found on pets throughout the United States, a finding that may reflect recent shifts in tick distribution.

scholarly journals A Climatology of 500-hPa Closed Lows in the Northeastern Pacific Ocean, 1948–2011

2014 ◽  
Vol 53 (6) ◽  
pp. 1578-1592 ◽  
Author(s):  
Nina S. Oakley ◽  
Kelly T. Redmond
Keyword(s):  
United States ◽  
Pacific Ocean ◽  
Interannual Variability ◽  
West Coast ◽  
The United States ◽  
Western United States ◽  
The West ◽  
Reanalysis Dataset ◽  
The Pacific ◽  
Northeastern Pacific

AbstractThe northeastern Pacific Ocean is a preferential location for the formation of closed low pressure systems. These slow-moving, quasi-barotropic systems influence vertical stability and sustain a moist environment, giving them the potential to produce or affect sustained precipitation episodes along the west coast of the United States. They can remain motionless or change direction and speed more than once and thus often pose difficult forecast challenges. This study creates an objective climatological description of 500-hPa closed lows to assess their impacts on precipitation in the western United States and to explore interannual variability and preferred tracks. Geopotential height at 500 hPa from the NCEP–NCAR global reanalysis dataset was used at 6-h and 2.5° × 2.5° resolution for the period 1948–2011. Closed lows displayed seasonality and preferential durations. Time series for seasonal and annual event counts were found to exhibit strong interannual variability. Composites of the tracks of landfalling closed lows revealed preferential tracks as the features move inland over the western United States. Correlations of seasonal event totals for closed lows with ENSO indices, the Pacific decadal oscillation (PDO), and the Pacific–North American (PNA) pattern suggested an above-average number of events during the warm phase of ENSO and positive PDO and PNA phases. Precipitation at 30 U.S. Cooperative Observer stations was attributed to closed-low events, suggesting 20%–60% of annual precipitation along the West Coast may be associated with closed lows.

Near-Drowning

1993 ◽  
Vol 14 (4) ◽  
pp. 148-151
Author(s):  
Debra H. Fiser
Keyword(s):  
United States ◽  
Low Income ◽  
The United States ◽  
Western United States ◽  
King County ◽  
Near Drowning ◽  
Time Period ◽  
States Data ◽  
Low Income Groups ◽  
Bodies Of Water

Definition Drowning is defined as death caused by submersion, whereas near-drowning connotes survival for some time period following submersion. The following remarks pertain to the near-drowning victim who presents for acute medical management. Epidemiology Because reporting of near-drowning incidents is incomplete, most of the available epidemiologic information focuses on drowning deaths, which number more than 6500 per year in the United States. Data from King County, Washington, however, suggest that near-drownings slightly out-number drownings. Drowning rates are highest for children under the age of 5 years and between the ages of 15 and 24 years. Males drown 4 times more frequently than females. African-Americans and low-income groups also are affected disproportionately, except for those drownings involving boats and residential swimming pools, which more often are owned by middle class groups. Drownings peak during the summer months and are most common in the southern and western United States and Alaska. Forty to 45% of all drownings occur while the victim is swimming and 12% to 29% are boat-related. Alcohol plays a substantial role in these deaths. Between one half and three quarters of all drownings occur in lakes, ponds, rivers, and the ocean. More than 40% of all submersions in these bodies of water involve older adolescents or young adults.

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