scholarly journals Design of fault trees as a practical method for risk analysis of CCS: Application to the different life stages of deep aquifer storage, combining long-term and short-term issues

2011 ◽  
Vol 4 ◽  
pp. 4193-4198 ◽  
Author(s):  
Régis Farret ◽  
Philippe Gombert ◽  
Franz Lahaie ◽  
Auxane Cherkaoui ◽  
Stéphane Lafortune ◽  
...  
1982 ◽  
Vol 15 (02) ◽  
pp. 180-186 ◽  
Author(s):  
Joseph LaPalombara

Political scientists are only now, and dimly, beginning to recognize that something called “political risk analysis” (PRA) is very much in vogue in the corporate and banking communities of this country. Any attempt to assess this uncommon development should begin with this question: Why would any banker or corporate manager wish to spend hard cash on anything political scientists might have to say about places overseas where banks and multinational corporations lend or invest their capital? After all, the profession is not exactly distinguished by its ability to make accurate forecasts. Indeed, Sartori has argued that political scientists ought to eschew forecasting entirely in that they are best able to explain what happened as opposed to what may come to pass.Sartori's assertion of course would make historians of us all—and burden us with the historian's smug claim that, if the history examined is too recent, the immediacy of events will distort our vision and bias our judgments. Thus, rather than try to foretell where, say, Germany will move politically next year we should expend (more!) of our resources to establish once and for all what really caused Weimar to collapse and Hitler to come to power.This is not the stuff of political risk analysis. Growing interest in this activity is little based on broad analyses of the past or on long-term forecasts of future events. The potential consumers of political assessments are intelligent, harried bankers and corporate managers who are pressed to make relatively short-term decisions that affect the viability of enterprise and investment-and, equally important, careers-in professions where tenure is unknown.


2001 ◽  
Vol 2001 (1) ◽  
pp. 399-403 ◽  
Author(s):  
Mark G. Carls ◽  
Ron Heintz ◽  
Adam Moles ◽  
Stanley D. Rice ◽  
Jeffrey W. Short

ABSTRACT Immediate damage from an oil spill is usually obvious (oiled birds, oiled shoreline), but long-term damage to either fauna or habitat is more subtle, difficult to measure, difficult to evaluate, and hence often controversial. The question is, are too many of response decisions such as dispersant use or shoreline cleanup based on short-term acute toxicity models? Have long-term damage scenarios been discounted because of the inherent difficulty in deriving definitive answers? Experience with the Exxon Valdez oil spill is shedding new light on the potential for long-term damage. Government-funded studies demonstrated that oil persists in certain habitats for extended periods of time, such as the intertidal reaches of salmon streams, in soft sediments underlying mussel beds, and on cobble beaches armored with large boulders. Observation of long-term persistence of oil in some habitats is not new, but an increasing number of studies indicate that fauna may be chronically and significantly exposed to oil in these habitats. The toxic components in oil responsible for much of the long-term effects are believed to be the larger 3- and 4-ring polyaromatic hydrocarbons (PAHs) that can induce cellular and genetic effects rather than the narcotic monoaromatic hydrocarbons (MAHs) responsible for acute mortalities. Observation of long-term persistence of Exxon Valdez oil, coupled with adverse effects on sensitive life stages, leads to the conclusion that strategies based on minimizing acute mortalities immediately following a spill probably do not provide adequate protection against long-term damage. When making environmental decisions in response to a spill (prevention measures or restoration measures), more weight should probably be given to long-term issues rather than discounting their significance. Total environmental cost is the sum of short-term damage and long-term damage, and long term-damage to habitats and sensitive life stages probably needs more consideration even though it is very difficult to evaluate and compare to the relatively obvious acute issues.


Water ◽  
2017 ◽  
Vol 9 (6) ◽  
pp. 424 ◽  
Author(s):  
Wen-Ming Cheng ◽  
Chien-Lin Huang ◽  
Nien-Sheng Hsu ◽  
Chih-Chiang Wei

2021 ◽  
Author(s):  
Jiale Xu ◽  
Romelo Casanave ◽  
Su Guo

AbstractBalancing exploration and anti-predation are fundamental to the fitness and survival of all animal species from early life stages. How these basic survival instincts drive learning remains poorly understood. Here, employing a light/dark preference paradigm with well-controlled luminance history and constant visual surrounding in larval zebrafish, we analyzed intra- and inter-trial dynamics for two behavioral components, dark avoidance and center avoidance. We uncover that larval zebrafish display short-term learning of dark avoidance with initial sensitization followed by habituation; they also exhibit long-term learning that is sensitive to trial interval length. We further show that such stereotyped learning patterns is stimulus specific, as they are not observed for center avoidance. Finally, we demonstrate at individual levels that long-term learning is under homeostatic control. Together, our work has established a novel paradigm to understand learning, uncovered sequential sensitization and habituation, and demonstrated stimulus specificity, individuality, as well as dynamicity in learning.


2021 ◽  
pp. JFCP-20-00017
Author(s):  
Philip Gibson ◽  
Janine K. Sam ◽  
Yuanshan Cheng

This study examines the timing of financial education and its impact on short-term and long-term financial behavior. We also explore the power of financial education on financial knowledge and examine the link between financial knowledge and positive financial behavior. Exposure to financial education during multiple life stages leads to a better financial outcome. Financial education taught via multiple channels, including high school, college, the workplace, and at home, is the most optimal in the long run. For those who did not attend college, being exposed to financial education in high school is significantly associated with positive financial behavior. We cite implications for all financial education advocates. Policymakers in the financial capability arena can stay abreast of the channels of financial education that produce the most fruitful economic and societal gains.


2016 ◽  
Vol 39 ◽  
Author(s):  
Mary C. Potter

AbstractRapid serial visual presentation (RSVP) of words or pictured scenes provides evidence for a large-capacity conceptual short-term memory (CSTM) that momentarily provides rich associated material from long-term memory, permitting rapid chunking (Potter 1993; 2009; 2012). In perception of scenes as well as language comprehension, we make use of knowledge that briefly exceeds the supposed limits of working memory.


Author(s):  
D.E. Loudy ◽  
J. Sprinkle-Cavallo ◽  
J.T. Yarrington ◽  
F.Y. Thompson ◽  
J.P. Gibson

Previous short term toxicological studies of one to two weeks duration have demonstrated that MDL 19,660 (5-(4-chlorophenyl)-2,4-dihydro-2,4-dimethyl-3Hl, 2,4-triazole-3-thione), an antidepressant drug, causes a dose-related thrombocytopenia in dogs. Platelet counts started to decline after two days of dosing with 30 mg/kg/day and continued to decrease to their lowest levels by 5-7 days. The loss in platelets was primarily of the small discoid subpopulation. In vitro studies have also indicated that MDL 19,660: does not spontaneously aggregate canine platelets and has moderate antiaggregating properties by inhibiting ADP-induced aggregation. The objectives of the present investigation of MDL 19,660 were to evaluate ultrastructurally long term effects on platelet internal architecture and changes in subpopulations of platelets and megakaryocytes.Nine male and nine female beagle dogs were divided equally into three groups and were administered orally 0, 15, or 30 mg/kg/day of MDL 19,660 for three months. Compared to a control platelet range of 353,000- 452,000/μl, a doserelated thrombocytopenia reached a maximum severity of an average of 135,000/μl for the 15 mg/kg/day dogs after two weeks and 81,000/μl for the 30 mg/kg/day dogs after one week.


2020 ◽  
Vol 29 (4) ◽  
pp. 710-727
Author(s):  
Beula M. Magimairaj ◽  
Naveen K. Nagaraj ◽  
Alexander V. Sergeev ◽  
Natalie J. Benafield

Objectives School-age children with and without parent-reported listening difficulties (LiD) were compared on auditory processing, language, memory, and attention abilities. The objective was to extend what is known so far in the literature about children with LiD by using multiple measures and selective novel measures across the above areas. Design Twenty-six children who were reported by their parents as having LiD and 26 age-matched typically developing children completed clinical tests of auditory processing and multiple measures of language, attention, and memory. All children had normal-range pure-tone hearing thresholds bilaterally. Group differences were examined. Results In addition to significantly poorer speech-perception-in-noise scores, children with LiD had reduced speed and accuracy of word retrieval from long-term memory, poorer short-term memory, sentence recall, and inferencing ability. Statistically significant group differences were of moderate effect size; however, standard test scores of children with LiD were not clinically poor. No statistically significant group differences were observed in attention, working memory capacity, vocabulary, and nonverbal IQ. Conclusions Mild signal-to-noise ratio loss, as reflected by the group mean of children with LiD, supported the children's functional listening problems. In addition, children's relative weakness in select areas of language performance, short-term memory, and long-term memory lexical retrieval speed and accuracy added to previous research on evidence-based areas that need to be evaluated in children with LiD who almost always have heterogenous profiles. Importantly, the functional difficulties faced by children with LiD in relation to their test results indicated, to some extent, that commonly used assessments may not be adequately capturing the children's listening challenges. Supplemental Material https://doi.org/10.23641/asha.12808607


2019 ◽  
Vol 25 ◽  
pp. 114
Author(s):  
Alyssa Dufour ◽  
Setareh Williams ◽  
Richard Weiss ◽  
Elizabeth Samelson

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