Paleomagnetism of the Hyblean Plateau, Sicily: a review of the existing data set and new evidence of block rotation from the Scicli–Ragusa Fault System

2016 ◽  
Vol 135 (2) ◽  
pp. 300-307 ◽  
Author(s):  
Alessandra G. Pellegrino ◽  
Rosanna Maniscalco ◽  
Fabio Speranza ◽  
Catalina Hernandez-Moreno ◽  
Giovanni Sturiale
Keyword(s):  
Fault System ◽  
Block Rotation ◽  
Data Set ◽  
New Evidence ◽  
Existing Data

scholarly journals Relative Astrometry with Imaging Transit Telescopes

1995 ◽  
Vol 166 ◽  
pp. 9-12
Author(s):  
G. F. Benedict ◽  
J. T. McGraw ◽  
T. R. Hess
Keyword(s):  
Standard Errors ◽  
The Moon ◽  
Data Set ◽  
Existing Data

A CCD/Transit Instrument (CTI) has produced relative astrometry with standard errors less than 2.6% of a 1.55 arcsecond pixel for stars with V ≤ 17. Additional astrometric studies with existing data are required to better understand the ultimate contribution these devices can make to our science.The CTI is presently dismantled, awaiting a move to a new site. We briefly discuss the potential astrometric scientific returns from the exisiting data set, from a refurbished CTI, and from a similar device emplaced on the Moon.

Estimating clinical chemistry reference values based on an existing data set of unselected animals

2008 ◽  
Vol 178 (2) ◽  
pp. 278-281 ◽  
Author(s):  
Corrado Dimauro ◽  
Piero Bonelli ◽  
Paola Nicolussi ◽  
Salvatore P.G. Rassu ◽  
Aldo Cappio-Borlino ◽  
...  
Keyword(s):  
Reference Values ◽  
Clinical Chemistry ◽  
Data Set ◽  
Existing Data

New Evidence on Eastern Europe's Pollution Progress

2003 ◽  
Vol 3 (1) ◽  
Author(s):  
Matthew E Kahn
Keyword(s):  
Sulfur Dioxide ◽  
Carbon Dioxide Emissions ◽  
National Level ◽  
Data Sets ◽  
Local Public Good ◽  
Data Set ◽  
The Czech Republic ◽  
Level Data ◽  
Good Improvement ◽  
New Evidence

Abstract Under communism, Eastern Europe's cities were significantly more polluted than their Western European counterparts. An unintended consequence of communism's decline is to improve urban environmental quality. This paper uses several new data sets to measure these gains. National level data are used to document the extent of convergence across nations in sulfur dioxide and carbon dioxide emissions. Based on a panel data set from the Czech Republic, Hungary and Poland, ambient sulfur dioxide levels have fallen both because of composition and technique effects. The incidence of this local public good improvement is analyzed.

Insights into productivity drivers for the Niobrara-equivalent horizontal play in the Piceance Basin, Colorado

2020 ◽  
Vol 57 (4) ◽  
pp. 309-354
Author(s):  
Jason Eleson ◽  
Chip Oakes ◽  
Graham McClave
Keyword(s):  
Powder River Basin ◽  
Fault System ◽  
Piceance Basin ◽  
Thermal Maturity ◽  
Data Set ◽  
Horizontal Drilling ◽  
Child Effects ◽  
Mancos Shale ◽  
Low Degree ◽  
Future Potential

Limited horizontal drilling has occurred within the Niobrara-equivalent section of the Mancos Shale in the Piceance Basin, and the results from individual wells are highly variable. Prior studies have suggested that thermal maturity and completion techniques were the primary drivers for the observed production trends, but further analysis of well results indicates there are more variables at play. This study leveraged a comprehensive data set from the Piceance Basin, including core analyses, pressure data, and drilling and completion methods to provide additional context for the production results. From this analysis, several key trends were identified. North/south variations in thermal maturity were confirmed, as well as additional trends were identified revealing later exhumation south of the Rangely fault system resulted in significant depressurization, particularly in the western Piceance Basin. The semi-regional depressurization was the result of decrease in overburden pressures that allowed vertical migration of hydrocarbons out of the Mancos Shale. In addition to the semi-regional depressurization, there were more local depressurization events that resulted from faulting in areas such as the Orchard Unit in the southern Piceance Basin where thrust faults allowed hydrocarbons to migrate vertically into overlying formations. Northwest to southeast production trends are present in the southern Piceance Basin and are interpreted to reflect structurally undeformed areas based on high formation pressures and better producing horizontal wells. Parent-child effects have been observed locally and are linked to lower initial production rates and faster decline rates. The northern Piceance Basin exhibits higher reservoir pressure in the liquids window than was observed to the south due to the relatively low degree of exhumation and/or faulting in areas where horizontal Niobrara wells were drilled. Horizontal well results in the northern Piceance Basin have been mixed, largely due to inefficient completion strategies. By comparing the northern Piceance Basin wells with similar horizontal Niobrara wells in the Powder River Basin of northeastern Wyoming, it is concluded that drilling into the over-pressured liquids rim and utilizing slickwater frac fluid with friction reducer and 100 mesh sand will yield improved economic results over those obtained so far in the Piceance Basin. Though relatively few laterals have been drilled in the Piceance Basin Niobrara play, the basin has great future potential.

scholarly journals Serving up mealtime strategies : how families experience dementia in the community

2021 ◽  
Author(s):  
Abigail Wickson
Keyword(s):  
Sense Of Self ◽  
Secondary Analysis ◽  
Well Being ◽  
Spousal Caregivers ◽  
Data Set ◽  
People With Dementia ◽  
Adult Caregivers ◽  
Late Stages ◽  
Existing Data

The mealtime experiences for people with dementia and their caregivers living in the community has not been extensively explored. An existing data set provided information on the mealtime strategies used to cope with changing dementia behaviours. A secondary analysis of data from 10 dyads of people with dementia and their caregivers were analyzed. Four categories were identified including: Strategies to facilitate eating; Strategies to promote a sense of self; Stategies to minimize risk; and Strategies to promote caregiver well-being. The dyads used a variety of strategies that were common to all stages of dementia; however by the late stages, the dyads used more specific strategies. In general, the mealtime strategies used by adult caregivers and spousal caregivers did not greatly differ but rather the context in which they engaged in mealtimes did. The results demonstrated that there are opportunities to educate families and professionals about potential mealtime strategies.

scholarly journals Empirical Relationship for Assessing the Near-Field Horizontal Coseismic Displacement Using GPS Seismology Data

2021 ◽  
Vol 60 (1) ◽  
pp. 31-50
Author(s):  
Ryad Darawcheh ◽  
Riad Al Ghazzi ◽  
Mohamad Khir Abdul-wahed
Keyword(s):  
Near Field ◽  
Empirical Relationship ◽  
Active Faults ◽  
Historical Earthquakes ◽  
Dead Sea ◽  
Fault System ◽  
Coseismic Displacement ◽  
Data Set ◽  
Earthquake Parameters ◽  
Gps Station

In this research, a data set of horizontal GPS coseismic displacement in the near-field has been assembled around the world in order to investigate a potential relationship between the displacement and the earthquake parameters. Regression analyses have been applied to the data of 120 interplate earthquakes having the magnitude (Mw 4.8-9.2). An empirical relationship for prediction near-field horizontal GPS coseismic displacement as a function of moment magnitude and the distance between hypocenter and near field GPS station has been established using the multi regression analysis. The obtained relationship allows assessing the coseismic displacements associated with some large historical earthquakes occurred along the Dead Sea fault system. Such a fair relationship could be useful for assessing the coseismic displacement at any point around the active faults.

The Mesolithic-Neolithic transition in western Scotland: a review and new evidence from Tiree

2007 ◽  
Author(s):  
Steven Mithen ◽  
Anne Pirie ◽  
Sam Smith ◽  
Karen Wicks
Keyword(s):  
Settlement Patterns ◽  
Skeletal Remains ◽  
Early 20Th Century ◽  
Hunter Gatherers ◽  
Population Replacement ◽  
Dietary Analysis ◽  
Neolithic Transition ◽  
Contradictory Evidence ◽  
New Evidence ◽  
Existing Data

Although both the Mesolithic and Neolithic of western Scotland have been studied since the early 20th century, our knowledge of both periods remains limited, as does our understanding of the transition between them – whether this is entirely cultural in nature or involves the arrival of new Neolithic populations and the demise of the indigenous Mesolithic hunter-gatherers. The existing data provide seemingly contradictory evidence, with that from dietary analysis of skeletal remains suggesting population replacement and that from settlement and technology indicating continuity. After reviewing this evidence, this chapter briefly describes ongoing fieldwork in the Inner Hebrides that aims to gain a more complete understanding of Mesolithic settlement patterns, without which there can only be limited progress on understanding the Mesolithic–Neolithic transition.

Bracelets and Torcs

2021 ◽  
pp. 115-161
Author(s):  
Ellen Swift ◽  
Jo Stoner ◽  
April Pudsey
Keyword(s):  
Literature Review ◽  
Social Identities ◽  
Seventh Century ◽  
Late Antique ◽  
Social Functions ◽  
Data Set ◽  
Preliminary Discussion ◽  
The Social ◽  
New Evidence ◽  
Infants And Young Children

The chapter illuminates how bracelets and torcs were used to construct social identities, and their importance as protective artefacts, using new evidence, particularly relating to diameter sizes, to question some previous interpretations of these artefacts. It starts with a preliminary discussion regarding identification and how these objects were worn. The data set of bracelets is then presented and evidence for dating of particular bracelet types is considered. Evidence for the use and social function of bracelets is then set out, particularly diameter sizes, which are shown to be important in identifying use by people at particular life course stages, for instance infants and children. Bracelets are shown to be especially common as a children’s item in Egypt, in contrast to other provinces. One particular type of bracelet, the amuletic disc bracelet, is shown to be associated with protection during pregnancy. The chapter then examines torcs, and following a literature review and discussion of dating evidence for particular types, it is established that most are of sixth- to seventh-century CE date. It is also shown that, contrary to established opinion, torcs do not have military associations in the late antique period, at least in Egypt. The diameter sizes of types of non-openable torcs instead show a strong bias to wear by infants and young children. The social functions of torcs are then discussed, which could include protection, status assertion, and signifier of dedication to a particular role. Other topics discussed include inheritance of these objects within families.

scholarly journals The Rate of Return on Everything, 1870–2015*

2019 ◽  
Vol 134 (3) ◽  
pp. 1225-1298 ◽  
Author(s):  
Òscar Jordà ◽  
Katharina Knoll ◽  
Dmitry Kuvshinov ◽  
Moritz Schularick ◽  
Alan M Taylor
Keyword(s):  
Growth Rate ◽  
Rate Of Return ◽  
Annual Data ◽  
Real Rate ◽  
Data Set ◽  
Long Run ◽  
Advanced Economies ◽  
New Findings ◽  
Asset Classes ◽  
New Evidence

Abstract What is the aggregate real rate of return in the economy? Is it higher than the growth rate of the economy and, if so, by how much? Is there a tendency for returns to fall in the long run? Which particular assets have the highest long-run returns? We answer these questions on the basis of a new and comprehensive data set for all major asset classes, including housing. The annual data on total returns for equity, housing, bonds, and bills cover 16 advanced economies from 1870 to 2015, and our new evidence reveals many new findings and puzzles.

Detection of sharp lateral discontinuities through the analysis of surface-wave propagation

Geophysics ◽  
2014 ◽  
Vol 79 (4) ◽  
pp. EN77-EN90 ◽  
Author(s):  
Paolo Bergamo ◽  
Laura Valentina Socco
Keyword(s):  
Surface Wave ◽  
Fault Location ◽  
Synthetic Data ◽  
Finite Element Method Simulation ◽  
Fault System ◽  
Energy Concentration ◽  
Data Sets ◽  
Data Set ◽  
Shallow Subsurface ◽  
Velocity Models

Surface-wave (SW) techniques are mainly used to retrieve 1D velocity models and are therefore characterized by a 1D approach, which might prove unsatisfactory when relevant 2D effects are present in the investigated subsurface. In the case of sharp and sudden lateral heterogeneities in the subsurface, a strategy to tackle this limitation is to estimate the location of the discontinuities and to separately process seismic traces belonging to quasi-1D subsurface portions. We have addressed our attention to methods aimed at locating discontinuities by identifying anomalies in SW propagation and attenuation. The considered methods are the autospectrum computation and the attenuation analysis of Rayleigh waves (AARW). These methods were developed for purposes and/or scales of analysis that are different from those of this work, which aims at detecting and characterizing sharp subvertical discontinuities in the shallow subsurface. We applied both methods to two data sets, synthetic data from a finite-element method simulation and a field data set acquired over a fault system, both presenting an abrupt lateral variation perpendicularly crossing the acquisition line. We also extended the AARW method to the detection of sharp discontinuities from large and multifold data sets and we tested these novel procedures on the field case. The two methods are proven to be effective for the detection of the discontinuity, by portraying propagation phenomena linked to the presence of the heterogeneity, such as the interference between incident and reflected wavetrains, and energy concentration as well as subsequent decay at the fault location. The procedures we developed for the processing of multifold seismic data set showed to be reliable tools in locating and characterizing subvertical sharp heterogeneities.

Sign in / Sign up

Export Citation Format

Share Document