Towards upgraded capability in offshore seismic studies with the new National Australian Pool of Ocean Bottom Seismographs

2013 ◽  
Vol 53 (2) ◽  
pp. 482
Author(s):  
Alexey Goncharov ◽  
Nicholas Rawlinson ◽  
Bruce Goleby
Keyword(s):  
Natural Hazard ◽  
Ocean Bottom ◽  
Data Set ◽  
Multi Scale ◽  
Refraction Seismic ◽  
Short And Long Term ◽  
Ocean Bottom Seismographs ◽  
Obs Data ◽  
First Time

In 2013, Australia, for the first time in its history, will obtain a national pool of ocean-bottom seismographs (OBSs) suitable for multi-scale experiments at sea and for onshore-offshore combined observations. Twenty broadband OBS instruments will be purchased for short- and long-term deployment (up to 12 months) to a maximum depth of 6 km. The instruments will be made available to Australian researchers through ANSIR, with only the costs of mobilisation and deployment to be met. It is anticipated that the OBS facility will greatly enhance the research capabilities of Australian scientists in the area of Earth imaging, offshore exploration, and natural hazard assessment. OBS experiments in Australia have been limited so far, with the only data set collected by Geoscience Australia in 1995–96 on a number of coincident reflection/refraction seismic transects across the northwestern Australian Margin. The main findings from that experiment will be reviewed in the context of recent OBS data processing and acquisition advances. The scope of the experiments with the new national Australian pool of OBSs will be presented, as well as practicalities and logistics of the OBS experiments.

It Is Not Your Parents’ Long-Term Services System: Nursing Homes in a Changing World

2018 ◽  
Vol 39 (8) ◽  
pp. 898-901
Author(s):  
Robert Applebaum ◽  
Shahla Mehdizadeh ◽  
Diane Berish
Keyword(s):  
Nursing Home ◽  
Nursing Homes ◽  
Length Of Stay ◽  
Older Person ◽  
Home Practice ◽  
Data Set ◽  
Study Results ◽  
Utilization Data ◽  
First Time

The long-term services system has changed substantially since the mid-1970s, when the landmark book Last Home for the Aged argued that the move to the nursing home was the last move an older person would make until death. Using detailed nursing home utilization data from the Minimum Data Set, this study tracks three cohorts of first-time nursing home admissions in Ohio from 1994 through 2014. Each cohort was followed for a 3-year period. Study results report dramatic reductions in nursing home length of stay between the 1994 and 2011 cohorts. Reduction in length of stay has important implications for nursing home practice and quality monitoring. The article argues that administrative and regulatory practices have not kept pace with the dramatic changes in how nursing homes are now being used in the long-term services system.

Australian national ocean bottom seismograph fleet advances conventional exploration

2017 ◽  
Vol 57 (2) ◽  
pp. 738
Author(s):  
Alexey Goncharov ◽  
Michal Malinowski ◽  
Dejan Sekulic ◽  
Ashby Cooper ◽  
Peter Chia ◽  
...  
Keyword(s):  
Regional Scale ◽  
Seismic Survey ◽  
Ocean Bottom ◽  
P Waves ◽  
Crust And Upper Mantle ◽  
Seismic Surveys ◽  
S Waves ◽  
Industry Standard ◽  
Ocean Bottom Seismographs ◽  
Obs Data

A fleet of new Australian ocean bottom seismographs (OBSs) have broadband frequency range, and similar instruments are available at only five or six institutions globally. These OBSs are multi-purpose devices able to record passive-source seismic data (earthquakes, ambient noise) as well as active-source (airgun generated) data and, at the same time, to monitor seismic survey noise and whale calls for environmentally responsible exploration. OBS data collected during commercial seismic surveys in Australian waters prove that it is possible to image the velocity distribution of the whole crust and upper mantle from analysis of both reflected and refracted phases generated by an industry-standard broadband airgun array. This means that valuable information on a regional scale can be obtained as a by-product of commercial seismic surveys. Three-component recording capability of OBSs allows analysis of S-waves in addition to the P-waves that are conventionally used in marine reflection surveys.

scholarly journals Repairing political trust in Tunisia

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Malek Sghaier ◽  
Hamida Skandrani ◽  
Julie Robson
Keyword(s):  
Political Trust ◽  
Repair Process ◽  
Structured Interviews ◽  
Content Type ◽  
Trust Repair ◽  
Political Talk ◽  
Short And Long Term ◽  
Key Events ◽  
First Time

Purpose This study aims to identify the responses required to repair political trust in Tunisia and the differences between two key stakeholder groups, namely, politicians and voters. Design/methodology/approach A sequential mixed method study was adopted using two data sources: semi-structured interviews conducted with citizens and politicians; and media data from TV political talk shows. Data was collected over a three-year period following several key events that affected trust. Findings New responses were identified to repair political trust, and these were categorized using a trust repair framework. In addition to short- and long-term responses, a new category, swift response, was identified to resolve immediate political uncertainty. The role of the trustor (i.e. voters) in actively restoring trust was identified for the first time. Research limitations/implications This study focussed on trust repair responses suggested by voters and politicians and not necessarily responses that were implemented by government or political parties during the period of study. The effectiveness of the suggested responses in repairing trust was not evaluated. Practical implications Identification of the responses required to repair trust with voters, how these differ over time, and according to different trust violations will help Tunisian politicians rebuild trust more effectively during election and non-election periods. Notably, differences highlighted between the responses suggested by voters and politicians suggest that politicians may not understand how to repair voter trust. Originality/value Contrary to previous studies that assume a trustor (the voter) is a passive observer, this research identified the proactive role that citizens play in the trust repair process.

Renegotiating family life: caregiving in the aftermath of the mother’s imprisonment

2020 ◽  
pp. 67-96
Author(s):  
Natalie Booth
Keyword(s):  
Family Life ◽  
Initial Response ◽  
Short And Long Term ◽  
Three Stages ◽  
First Time ◽  
Work Commitments

This chapter reveals how caregivers responded to the mother's imprisonment both in the short and long term. The focus is directed more towards the primary kin caregivers as the ones assuming the bulk of the childcare responsibilities. The literature provides some insights into the disruption that looking after the children can have for caregivers, but the chapter takes a chronological examination to help better understand the process of assuming care. While doing so, it is important to remember that in 14 families, an added layer of uncertainty and confusion occurred because it was their first time navigating maternal imprisonment. The chapter studies renegotiations at three stages: caregivers' reactions to the news of the imprisonment and especially how the mother's sentence was unexpected; the initial response to the mother's imprisonment; and the longer-term renegotiations, focusing on the diverse and complex adjustments made to their roles, identities, practices, work commitments, and finances in order to provide care to the children on a more permanent basis.

scholarly journals Short- and long-term variability of spectral solar UV irradiance at Thessaloniki, Greece: effects of changes in aerosols, total ozone and clouds

2016 ◽  
Vol 16 (4) ◽  
pp. 2493-2505 ◽  
Author(s):  
Ilias Fountoulakis ◽  
Alkiviadis F. Bais ◽  
Konstantinos Fragkos ◽  
Charickleia Meleti ◽  
Kleareti Tourpali ◽  
...  
Keyword(s):  
Total Ozone ◽  
Single Scattering ◽  
Data Set ◽  
Uv Irradiance ◽  
Long Term Changes ◽  
Solar Uv ◽  
Short And Long Term ◽  
Solar Uv Irradiance ◽  
Sky Conditions

Abstract. In this study, we discuss the short- and the long-term variability of spectral UV irradiance at Thessaloniki, Greece, using a long, quality-controlled data set from two Brewer spectrophotometers. Long-term changes in spectral UV irradiance at 307.5, 324 and 350 nm for the period 1994–2014 are presented for different solar zenith angles and discussed in association with changes in total ozone column (TOC), aerosol optical depth (AOD) and cloudiness observed in the same period. Positive changes in annual mean anomalies of UV irradiance, ranging from 2 to 6 % per decade, have been detected both for clear- and all-sky conditions. The changes are generally greater for larger solar zenith angles and for shorter wavelengths. For clear-skies, these changes are, in most cases, statistically significant at the 95 % confidence limit. Decreases in the aerosol load and weakening of the attenuation by clouds lead to increases in UV irradiance in the summer, of 7–9 % per decade for 64° solar zenith angle. The increasing TOC in winter counteracts the effect of decreasing AOD for this particular season, leading to small, statistically insignificant, negative long-term changes in irradiance at 307.5 nm. Annual mean UV irradiance levels are increasing from 1994 to 2006 and remain relatively stable thereafter, possibly due to the combined changes in the amount and optical properties of aerosols. However, no statistically significant corresponding turning point has been detected in the long-term changes of AOD. The absence of signatures of changes in AOD in the short-term variability of irradiance in the UV-A may have been caused by changes in the single scattering albedo of aerosols, which may counteract the effects of changes in AOD on irradiance. The anti-correlation between the year-to-year variability of the irradiance at 307.5 nm and TOC is clear and becomes clearer as the AOD decreases.

scholarly journals Comparison of long-term Moscow and Danish NLC observations: statistical results

2006 ◽  
Vol 24 (11) ◽  
pp. 2841-2849 ◽  
Author(s):  
P. Dalin ◽  
S. Kirkwood ◽  
H. Andersen ◽  
O. Hansen ◽  
N. Pertsev ◽  
...  
Keyword(s):  
Weather Conditions ◽  
Noctilucent Clouds ◽  
Characteristic Scale ◽  
Careful Attention ◽  
Data Set ◽  
First Time ◽  
Term Data ◽  
Statistical Results

Abstract. Noctilucent clouds (NLC) are the highest clouds in the Earth's atmosphere, observed close to the mesopause at 80–90 km altitudes. Systematic NLC observations conducted in Moscow for the period of 1962–2005 and in Denmark for 1983–2005 are compared and statistical results both for seasonally summarized NLC parameters and for individual NLC appearances are described. Careful attention is paid to the weather conditions during each season of observations. This turns out to be a very important factor both for the NLC case study and for long-term data set analysis. Time series of seasonal values show moderate similarity (taking into account the weather conditions) but, at the same time, the comparison of individual cases of NLC occurrence reveals substantial differences. There are positive trends in the Moscow and Danish normalized NLC brightness as well as nearly zero trend in the Moscow normalized NLC occurrence frequency but these long-term changes are not statistically significant. The quasi-ten-year cycle in NLC parameters is about 1 year shorter than the solar cycle during the same period. The characteristic scale of NLC fields is estimated for the first time and it is found to be less than 800 km.

Justice Matters: Peace Negotiations, Stable Agreements, and Durable Peace

2017 ◽  
Vol 63 (2) ◽  
pp. 287-316 ◽  
Author(s):  
Daniel Druckman ◽  
Lynn Wagner
Keyword(s):  
Civil Wars ◽  
Related Factors ◽  
Data Set ◽  
Negotiated Agreements ◽  
Peace Negotiations ◽  
Peace Agreements ◽  
Short And Long Term ◽  
The One ◽  
Durable Peace

Attaining durable peace (DP) after a civil war has proven to be a major challenge, as many negotiated agreements lapse into violence. How can negotiations to terminate civil wars be conducted and peace agreements formulated to contribute to lasting peace? This question is addressed in this study with a novel data set. Focusing on justice, we assess relationships between process (procedural justice [PJ]) and outcome (distributive justice [DJ]) justice on the one hand and stable agreements (SA) and DP on the other. Analyses of fifty peace agreements, which were reached from 1957 to 2008, showed a path from PJ to DJ to SA to DP: The justice variables were instrumental in enhancing both short- and long-term peace. These variables had a stronger impact on DP than a variety of contextual- and case-related factors. The empirical link between justice and peace has implications for the way that peace negotiations are structured.

scholarly journals Hirurska revaskularizacija miokarda

2003 ◽  
Vol 50 (2) ◽  
pp. 87-98
Author(s):  
Dusko Nezic ◽  
Predrag Milojevic ◽  
Aleksandar Knezevic ◽  
Milan Cirkovic ◽  
Ljiljana Lausevic-Vuk ◽  
...  
Keyword(s):  
Coronary Artery Bypass Surgery ◽  
Bypass Surgery ◽  
Internal Thoracic Artery ◽  
Artery Bypass ◽  
Surgical Approaches ◽  
Arterial Grafts ◽  
Cabg Surgery ◽  
Short And Long Term ◽  
First Time

It has been 45 years ago when Longmire (1958.) used internal thoracic artery (ITA) for the first time in coronary artery bypass surgery (CABG). In this review, we are presenting novel surgical approaches in CABG surgery. We have also been summarized the best of knowledge, up to date, regarding histology, pharmacology and pathophysiology of conduits (VSM, ITA and alternative venous and arterial grafts) which have been used in CABG surgery, as well as factors influence on its short and long-term patency.

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