scholarly journals Oil Spill Detection and Mapping: A 50-Year Bibliometric Analysis

2020 ◽  
Vol 12 (21) ◽  
pp. 3647
Author(s):  
Rodrigo N. Vasconcelos ◽  
André T. Cunha Lima ◽  
Carlos A. D. Lentini ◽  
Garcia V. Miranda ◽  
Luís F. Mendonça ◽  
...  
Keyword(s):  
Oil Spill ◽  
Remote Sensing Data ◽  
Strong Relationship ◽  
The United States ◽  
Point Of View ◽  
Technological Evolution ◽  
New Approach ◽  
Oil Spill Detection ◽  
The Past ◽  
Access Information

Oil spill detection and mapping (OSPM) is an extremely relevant issue from a scientific point of view due to the environmental impact on coastal and marine ecosystems. In this study, we present a new approach to assess scientific literature for the past 50 years. In this sense, our study aims to perform a bibliometric and network analysis using a literature review on the application of OSPM to assess researchers and trends in this field of science. In methodological terms we used the Scopus base to search for articles in the literature, then we used bibliometric tools to access information and reveal quantifying patterns in this field of literature. Our results suggest that the detection of oil in the sea has undergone a great evolution in the last decades and there is a strong relationship between the technological evolution aimed at detection with the improvement of remote sensing data acquisition methods. The most relevant contributions in this field of science involved countries such as China, the United States, and Canada. We revealed aspects of great importance and interest in OSPM literature using a bibliometric and network approach to give a clear overview of this field’s research trends.

scholarly journals Research on Wildfires and Remote Sensing in the Last Three Decades: A Bibliometric Analysis

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 604
Author(s):  
Sarah Moura Batista dos Santos ◽  
António Bento-Gonçalves ◽  
António Vieira
Keyword(s):  
Remote Sensing ◽  
Remote Sensing Data ◽  
Strong Relationship ◽  
The United States ◽  
Detection Methods ◽  
Technological Evolution ◽  
Subject Areas ◽  
Remote Sensing Techniques ◽  
The Impact ◽  
Source Of Information

Evaluating the impact of wildland fires on landscapes, a pursuit increasingly supported by remote sensing techniques, requires an understanding of wildfire dynamics. This research highlights the main insights from the literature related to “wildfires” and “remote sensing” published between 1991 and 2020. The Scopus database was used as a source of information regarding scientific production on these topics, after which bibliometric tools were employed as a means through which to reveal patterns in this network of journals, terms, countries, and authors. The results suggest that these subject areas have undergone significant developments in the last three decades, having been the focus of growing interest among the scientific community. The most relevant contributions to the literature available have been made by researchers working in the areas of earth and environmental sciences (54% of the publications), primarily in the United States, China, Spain, and Canada. Research trends in this field have undergone a significant evolution in recent decades, explained by the strong relationship between the technological evolution of detection methods and remote sensing data acquisition.

High performance GPU computing based approaches for oil spill detection from multi-temporal remote sensing data

2017 ◽  
Vol 202 ◽  
pp. 28-44 ◽  
Author(s):  
Ujwala Bhangale ◽  
Surya S. Durbha ◽  
Roger L. King ◽  
Nicolas H. Younan ◽  
Rangaraju Vatsavai
Keyword(s):  
Remote Sensing ◽  
Oil Spill ◽  
High Performance ◽  
Gpu Computing ◽  
Remote Sensing Data ◽  
Sensing Data ◽  
Oil Spill Detection ◽  
Multi Temporal

scholarly journals A New Approach of Oil Spill Detection Using Time-Resolved LIF Combined with Parallel Factors Analysis for Laser Remote Sensing

Sensors ◽  
2016 ◽  
Vol 16 (9) ◽  
pp. 1347 ◽  
Author(s):  
Deqing Liu ◽  
Xiaoning Luan ◽  
Jinjia Guo ◽  
Tingwei Cui ◽  
Jubai An ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Oil Spill ◽  
Time Resolved ◽  
New Approach ◽  
Oil Spill Detection ◽  
Factors Analysis ◽  
Laser Remote Sensing

scholarly journals The comparative method for policy studies: the thorny aspects

2019 ◽  
Vol 10 (1) ◽  
pp. 56-67
Author(s):  
Tatiana-Camelia Dogaru Cruceanu
Keyword(s):  
Comparative Research ◽  
Comparative Method ◽  
Policy Research ◽  
Point Of View ◽  
Decision Makers ◽  
Theoretical Point ◽  
Policy Studies ◽  
New Approach ◽  
The Past ◽  
Policy Systems

Abstract Over the past decades, the comparative method has attracted the attention of the theorists, and studies based on this approach have increased in applied policy research. In their daily and strategically policy decisions, the decision makers from local, regional and national levels use more and more the comparative research methods, especially due to interlinked relationship and the need for bench learning and benchmarking practices. The comparative method allows the actors to analyse other experiences, and thus to take decisions more efficient. This is a normal, an inevitable situation, when the unit of analysis is a country, a field of matters or a process where researchers compare cases from empirical or theoretical point of view. The purpose of this paper is to provide a critical view on the capacity of comparative method to foster knowledge in policy studies. The intention is to see and to explore the utility of comparative method for policy studies and policy analysis, since a new approach “evidence-based policymaking” arise, emphasising the importance of using evidence from other political and policy systems.

Fracking, Warming, and Systemic Leadership

2018 ◽  
Author(s):  
William R. Thompson ◽  
Leila Zakhirova
Keyword(s):  
Global Warming ◽  
Fossil Fuels ◽  
New Technology ◽  
Strong Relationship ◽  
The United States ◽  
Extraction Methods ◽  
Short Term ◽  
The Past ◽  
Significant Difference ◽  
International Standing

In the past, states with access to cheap and abundant sources of energy were able to develop radical new technology that paired core innovations with new fuels. Given the strong relationship between global warming and fossil fuels, in this chapter we ask whether the emergence of unconventional fuels and extraction methods are likely to make a significant difference for the relative international standing of the United States now and China perhaps later. Should the expansion of less expensive but older sources of energy, thanks to fracking technologies, help states maintain or regain systemic leadership? Our answer is that fracking will be advantageous in the short term but much less so when it comes to longer-term considerations such as global warming and systemic leadership. More likely, this innovation will only protract the transition away from fossil fuels.

Postmodern Curriculum

2021 ◽  
Author(s):  
Karen A. Krasny ◽  
Patrick Slattery
Keyword(s):  
First Nations ◽  
Large Scale ◽  
18Th Century ◽  
The United States ◽  
Natural World ◽  
Point Of View ◽  
Diverse Range ◽  
The Past ◽  
Life Itself ◽  
First Nations People

Postmodernism is a mid-20th-century response to 18th-century Enlightenment rationality. As a movement that developed across a diverse range of disciplines, it is not so much defined by a distinct chronology but rather is predicated on a recognition of the past and has come to represent a way of operating. The late Italian semiotician and writer Umberto Eco argued from an ideological point of view that every period in history has had its postmodernism. Architect and critical theorist Charles Jencks further polemicized postmodernism as a specific form of cultural resistance. In his view, postmodernism operates as a communicative set of values to address the needs of a society, and he cites architecture’s response to the pressing need for mass housing and large-scale urban redevelopment as an example of postmodern innovation. Inspired by postmodernism as a critical movement in the arts, architecture, and philosophy, postmodern curriculum similarly works to reject the universalizing ideals of modernity. It shares Jencks’s polemic stance and would have us reimagine the literal and metaphorical bricks and mortar of schools, colleges, and universities to advance a broader understanding of curriculum with the aim of addressing the need to provide fair and equitable access to education. The postmodern notion that the past has everything to do with the present is central to decolonizing efforts aimed at acknowledgment and reconciliation of the devastating and oppressive ends of curriculum as institutions. For example, government-sponsored residential schools in Canada and the United States stand as a glaring example of the abject failure of modern education to embrace the communicative ideals of postmodernism in its response to First Nations people. Postmodern curriculum is committed to a decentering and challenging agenda aimed at exposing and undermining master narratives of truth, language, knowledge, and power. Dynamic and responsive, postmodern curriculum’s holistic and ecological approach to education works to dissolve the artificial boundary between the outside community and the classroom to celebrate and honor the interconnectedness of knowledge, experience, international and local communities, the natural world, and life itself.

scholarly journals MEDSLIK-II, a Lagrangian marine oil spill model for short-term forecasting – Part 2: Numerical simulations and validations

2013 ◽  
Vol 6 (1) ◽  
pp. 1999-2043 ◽  
Author(s):  
M. De Dominicis ◽  
N. Pinardi ◽  
G. Zodiatis ◽  
R. Archetti
Keyword(s):  
Oil Spill ◽  
Remote Sensing Data ◽  
Horizontal Resolution ◽  
Point Of View ◽  
Ocean Currents ◽  
Stokes Drift ◽  
Model Parameters ◽  
Spatial Error ◽  
Marine Oil ◽  
Radar Images

Abstract. In this paper we use MEDSLIK-II, a Lagrangian marine oil spill model described in Part 1 of this paper (De Dominicis et al., 2013), to simulate oil slick transport and transformation processes for realistic oceanic cases where satellite or drifting buoys data are available for verification. The model is coupled with operational oceanographic currents, atmospheric analyses winds and remote-sensing data for initialization. The sensitivity of the oil spill simulations to several model parameterizations is analyzed and the results are validated using surface drifters and SAR (Synthetic Aperture Radar) images in different regions of the Mediterranean Sea. It is found that the forecast skill of Lagrangian trajectories largely depends on the accuracy of the Eulerian ocean currents: the operational models give useful estimates of currents, but high-frequency (hourly) and high spatial resolution is required, and the Stokes drift velocity has to be often added, especially in coastal areas. From a numerical point of view, it is found that a realistic oil concentration reconstruction is obtained using an oil tracer grid resolution of about 100 m, with at least 100 000 Lagrangian particles. Moreover, sensitivity experiments to uncertain model parameters show that the knowledge of oil type and slick thickness are, among all the others, key model parameters affecting the simulation results. Considering acceptable for the simulated trajectories a maximum spatial error of the order of three times the horizontal resolution of the Eulerian ocean currents, the predictability skill for particle trajectories is from 1 to 2.5 days depending on the specific current regime. This suggests that re-initialization of the simulations is required every day.

Emigration and the Irish abroad: recent writings

2001 ◽  
Vol 32 (127) ◽  
pp. 433-442
Author(s):  
John A. Jackson
Keyword(s):  
Public Awareness ◽  
The United States ◽  
Point Of View ◽  
The Sun ◽  
Global System ◽  
The Past ◽  
History Of ◽  
Changing Patterns ◽  
Plural Society

There has been a remarkable revival of interest in the Irish abroad within the past ten years. In part this is attributable to the new confidence experienced by the Irish at home with the economic success of the ‘tiger economy’ and the decline of ‘migration by necessity’. Equally the Irish abroad, especially in the United States, have risen to the top of the immigrant pile and have achieved prosperity and assurance of their position in their adopted homelands. This itself has led to a reduction in some of the inhibitions that have held back serious attention to the history of the immigrants and to a recognition of their place in the sun. Public awareness has been further stimulated by changing patterns of immigration and by the development of new attitudes towards immigrants in the host societies, now including Ireland itself. Such changes have created a need to give meaning to the term ‘plural society’ and to challenge the racism that has characteristically followed in the wake of increased numbers of immigrants.These seven books are representative of a large number that have begun to address the topic in the last few years from an historical point of view. For the most part they relate to the Irish in Britain but use the focus on the immigrants to open up issues about the history of Ireland and Britain and the role of each in an emerging global system. For example, one of them is a comparative account of the Irish in Liverpool and Philadelphia which allows consideration of some of the broader questions regarding the treatment of the Irish immigrant in the literature both by historians and other interested scholars.

An Experimental Investigation of the Dynamics of a Blade With Two Under-Platform Dampers

2017 ◽  
Vol 140 (3) ◽  
Author(s):  
Daniele Botto ◽  
Chiara Gastadi ◽  
Muzio M. Gola ◽  
Muhammad Umer
Keyword(s):  
Tangential Force ◽  
Turbine Blades ◽  
Relative Displacement ◽  
Point Of View ◽  
Test Rig ◽  
New Approach ◽  
Ground Support ◽  
The Past ◽  
Force Components ◽  
Blade Frequency

Several experimental apparatuses have been designed in the past to evaluate the effectiveness of under-platform dampers. Most of these experimental setups allow to measure the overall damper efficiency in terms of reduction of vibration amplitude in turbine blades. The experimental data collected with these test rigs do not increase the knowledge about the damper dynamics, and therefore, the uncertainty on the damper behavior remains a big issue. In this paper, a different approach to evaluate the damper–blade interaction has been put forward. A test rig has been purposely designed to accommodate a single blade and two under-platform dampers. One side of each damper is in contact with a ground support specifically designed to measure two independent forces on the damper. In this way, both the normal and the tangential force components in the damper–blade contact can be inferred. Damper kinematics is rebuilt by using the relative displacement measured between damper and blade. This paper describes the concept behind the new approach, shows the details of the new test rig, and discusses the blade frequency response from a new point of view.

scholarly journals ENHANCEMENTS TO STOCK CCG TRANSFER PUMPS/SKIMMER UNITS

2005 ◽  
Vol 2005 (1) ◽  
pp. 841-844
Author(s):  
D. Cooper ◽  
R. MacKay ◽  
C. Brown
Keyword(s):  
United States ◽  
Federal Government ◽  
Oil Spill ◽  
The United States ◽  
Coast Guard ◽  
Background Information ◽  
Environment Canada ◽  
Performance Information ◽  
Government Organizations ◽  
The Past

ABSTRACT A number of modifications and enhancements of the two primary transfer pump/skimmer units, specifically the GT-185 and GT-260 stocked by the Canadian Coast Guard have been proposed over the past few years. Much of the focus of the testing during this time has centered on dealing with very viscous oils, but the proposed changes will impact the performance of these devices when dealing with any oil. This paper details the development of a collaborative series of projects supported by Environment Canada and the Canadian Coast Guard over the past six years. It provides background information on the original problems or design limitations of the oil spill recovery equipment. Descriptions of the subsequent modifications are presented, along with performance information which quantifies any improvements to performance. The work has evolved to include partnerships with federal government organizations from Canada and the United States, along with contributions by manufacturers of similar spill response equipment during testing trials.

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