scholarly journals Development of a Matrix Based Statistical Framework to Compute Weight for Composite Hazards, Vulnerability and Risk Assessments

Climate ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 56 ◽  
Author(s):  
Kabir ◽  
Akter ◽  
Karim ◽  
Haque ◽  
Rahman ◽  
...  
Keyword(s):  
Correlation Matrix ◽  
Composite Index ◽  
Accurate Method ◽  
Risk Assessments ◽  
Physical Explanation ◽  
Statistical Framework ◽  
Large Numbers ◽  
Individual Indicator ◽  
Bangladesh Coast ◽  
Selection Of

Selection of relative weights for different indicators is a critical step during assessment of composite hazards, vulnerability, and risk. While assigning weight to an indicator, it is important to consider the influence of an individual indicator on a particular composite index. In general, the larger the weight of the indicator, the higher the importance of that indicator compared to other indicators. In this study, a new matrix based statistical framework (MSF) for weight assignment is developed that can be considered as the simplest and most accurate method for assigning weights for a large number of indicators. This method (MSF) is based on the valuation of the correlation matrix and Eigenvector associated with Eigenvalue. Relying on the inter build up methodology, MSF can fulfill some built-in gaps among other weightage methods. It can also directly give the ‘decision’ to select the relative weights that are found from the Eigenvector corresponding to the largest Eigenvalue. The new method is applied by assigning weights to 15 socio-economic indicators and assessed vulnerability and risk in the Bangladesh coast. While comparing with other weight methods, it is found that MSF gives the most acceptable physical explanation about the relative values of weights of indicators. In terms of accuracy, MSF is found to be most accurate compared to other weight methods. When large numbers of indicators are involved in an application, MSF is found to be relatively simple and easy to apply compared to other methods.

Changing Patterns in the Late Pleistocene/Early Holocene Prehistory of Southern Africa as Seen from the Nelson Bay Cave Stone Artifact Sequence

1978 ◽  
Vol 10 (1) ◽  
pp. 84-111 ◽  
Author(s):  
Janette Deacon
Keyword(s):  
Southern Africa ◽  
Sensu Stricto ◽  
Middle Stone Age ◽  
Stone Age ◽  
Faunal Remains ◽  
Later Stone Age ◽  
Large Numbers ◽  
Changing Patterns ◽  
Selection Of ◽  
Stone Artifact

The dating of the Stone Age sequence in southern Africa has been considerably revised over the last decade, and one of the anomalies which has resulted is that the Middle Stone Age, now dated to beyond 30,000 B.P., does not immediately precede the Later Stone Agesensu stricto. The excavation and analysis of occupation horizons dating between the most recent Middle Stone Age assemblages and the Holocene is therefore of particular interest. Nelson Bay Cave, situated on the southern coast of South Africa, contains deposits which partly fill the “gap” between the Middle and Later Stone Ages, and the occupation horizons dating between about 18,000 and 5000 years ago are described in this paper. Changes in the habitat in the vicinity of the site caused by sea-level and vegetation changes coincident with the amelioration of temperatures at the end of the Pleistocene are clearly marked in the faunal remains at the site. Largely correlated with the faunal changes (which includes the introduction of marine resources to the cave at about 12,000 B.P.) are changes in the stone artifact assemblages. Three industries are recognized in the sequence: the Robberg, characterized by microbladelets produced from bladelet cores and a few small scrapers and backed tools; the Albany, characterized by large scrapers and an absence of backed tools; and the Wilton, characterized by a variety of Formal Tools including relatively large numbers of small scrapers and backed tools. These changes in artifact-manufacturing traditions are interpreted as signaling adjustments to changing environmental conditions. An explanation for these adjustments is not sought in a simple cause-and-effect relationship between the environment and the cultural response; artifact changes are seen instead as the result of a twofold process, with the environment acting as an external stimulus to change, and the direction of the artifact change governed by the selection of a range of possibilities offered by the technology of the Later Stone Agesensu latothat was widespread in subequatorial Africa during the last 20,000 years.

An Accurate Method for Rapid Blood Grouping of Large Numbers of People

1951 ◽  
Vol 244 (25) ◽  
pp. 925-930 ◽  
Author(s):  
Fred H. Allen ◽  
Louis K. Diamond ◽  
Helen J. Madden
Keyword(s):  
Accurate Method ◽  
Large Numbers ◽  
Blood Grouping

scholarly journals MSX Sources in the LMC: Dust-Enshrouded AGB Stars, Post-AGB Stars and PN

2003 ◽  
Vol 209 ◽  
pp. 52-52
Author(s):  
P. R. Wood ◽  
M. Cohen
Keyword(s):  
Near Infrared ◽  
Point Sources ◽  
Agb Stars ◽  
Large Numbers ◽  
Red Supergiants ◽  
Selection Of

The Midcourse Space (MSX) Experiment (Price 1995) detected large numbers of point sources in the LMC at 8.28 μm (Egan et al. 2001). Near-infrared J H K L imaging and monitoring of the 504 MSX sources in a region of size 3° x 3.5° covering most of the LMC bar has been carried out. Spectra have been taken for most of the post-AGB stars and a selection of the AGB stars and red supergiants.

Albatrosses bathe before departing on a foraging trip: implications for risk assessments and marine spatial planning

2017 ◽  
Vol 28 (2) ◽  
pp. 208-215 ◽  
Author(s):  
JOSÉ P. GRANADEIRO ◽  
LETIZIA CAMPIONI ◽  
PAULO CATRY
Keyword(s):  
Spatial Planning ◽  
Population Level ◽  
Sea Surface ◽  
Risk Assessments ◽  
Marine Spatial Planning ◽  
Large Numbers ◽  
Highly Sensitive ◽  
Order Of Magnitude ◽  
Thalassarche Melanophris ◽  
Marine Areas

SummaryTracking studies of seabirds have generally focused in identifying areas used for foraging, in the hope of highlighting regions of energy transfer which may be important for seabird and general ecosystem conservation and special management. However, some sea areas may serve functions other than providing nutritional resources, which may be equally relevant, particularly if used by large numbers of individuals. In this paper, based on a study of 4 breeding colonies in the Falkland Islands and on 314 individuals tracked, we show that virtually all (97.8%) black-browed albatrosses Thalassarche melanophris (BBA) bathe in the close vicinity of the colony, remaining in the area for nearly an hour, before departing on a foraging trip. This compares with only 20 to 40% of the individuals landing close to the colony at the end of a foraging trip. The observed utilization of marine areas by BBA in a radius of 1 to 5 km around the nesting colony is one order of magnitude higher than elsewhere, including foraging hotspots. Clearly, even long-range flying birds such as albatrosses can make an intensive use of the sea-surface in the immediate vicinity of the colonies, and therefore any threats to seabirds in these areas (disturbance, pollutants, collision with artificial structures and light attraction) can potentially have a major impact at the population level. As such, the close neighbourhood of seabird colonies are potentially highly sensitive areas, and this needs to be taken into account when carrying out risk assessments or during marine spatial planning exercises.

Biology of Squat Lobsters

2011 ◽  
Keyword(s):  
Deep Sea ◽  
Hydrothermal Vents ◽  
Continental Margins ◽  
Red Tides ◽  
Ecological Processes ◽  
Current State ◽  
Large Numbers ◽  
Taxonomic Research ◽  
Squat Lobsters ◽  
Selection Of

Squat lobsters of the superfamilies Chirostyloidea and Galatheoidea are highly visible crustaceans on seamounts, continental margins, shelf environments, hydrothermal vents and coral reefs. About 1000 species are known. They frequently feature in deep-sea images taken by submersibles and are caught in large numbers by benthic dredges. Some species are so locally abundant that they form ‘red tides’. Others support a variety of important fisheries. The taxonomy of squat lobsters has been intensively studied over the past few decades, making them one of the best known deepwater crustacean groups. As a result, they have attracted the attention of deep-sea ecologists who use them as proxies to test hypotheses about deepwater ecological processes and biogeography. Interest in squat lobsters now extends much more widely than the taxonomic research community and this work is a timely synthesis of what is known about these animals. The Biology of Squat Lobsters provides keys for identification and reviews the current state of knowledge of the taxonomy, evolution, life history, distribution, ecology and fisheries of squat lobsters. A striking feature of squat lobsters is their vivid coloration, which is revealed in a selection of spectacular images of different species. 2012 Whitley Award Commendation for Invertebrate Natural History.

scholarly journals Molecular Modeling and In Vitro Studies of a Neutral Oxime as a Potential Reactivator for Acetylcholinesterase Inhibited by Paraoxon

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2954 ◽  
Author(s):  
Reuel de Paula ◽  
Joyce de Almeida ◽  
Samir Cavalcante ◽  
Arlan Gonçalves ◽  
Alessandro Simas ◽  
...  
Keyword(s):  
Molecular Modeling ◽  
Accurate Method ◽  
Docking Studies ◽  
Theoretical Studies ◽  
Modified Method ◽  
Decision Methods ◽  
In Vitro Inhibition ◽  
Mcdm Method ◽  
Selection Of

The present work aimed to compare the small, neutral and monoaromatic oxime, isatin-3-oxime (isatin-O), to the commercial ones, pralidoxime (2-PAM) and obidoxime, in a search for a new potential reactivator for acetylcholinesterase (AChE) inhibited by the pesticide paraoxon (AChE/POX) as well as a novel potential scaffold for further synthetic modifications. The multicriteria decision methods (MCDM) allowed the identification of the best docking poses of those molecules inside AChE/POX for further molecular dynamic (MD) studies, while Ellman’s modified method enabled in vitro inhibition and reactivation assays. In corroboration with the theoretical studies, our experimental results showed that isatin-O have a reactivation potential capable of overcoming 2-PAM at the initial moments of the assay. Despite not achieving better results than obidoxime, this molecule is promising for being an active neutral oxime with capacity of crossing the blood–brain barrier (BBB), to reactivate AChE/POX inside the central and peripheral nervous systems. Moreover, the fact that isatin-O can also act as anticonvulsant makes this molecule a possible multipotent reactivator. Besides, the MCDM method showed to be an accurate method for the selection of the best docking poses generated in the docking studies.

The Grid Menu: Efficient and Robust Selection of Menu-Items

2002 ◽  
Vol 46 (14) ◽  
pp. 1281-1285
Author(s):  
Hong-In Cheng ◽  
Patrick E. Patterson
Keyword(s):  
Web Sites ◽  
User Satisfaction ◽  
User Preference ◽  
User Friendliness ◽  
Menu Item ◽  
Menu Choice ◽  
Large Numbers ◽  
Business Web ◽  
User Friendly ◽  
Selection Of

With the increasing use of e-business web sites, users are often asked to select a menu-item from a large numbers of options. In this research, the pull-down menu, fisheye menu and grid menu were tested to compare the performance time, error rate, user satisfaction, simplicity, user friendliness, usefulness, and overall user preference of each menu type. The grid menu was more efficient in selection speed than the pull-down and fisheye menus when the number of menu-items was 50 and 100. The time needed to choose a menu-item with a grid menu was less affected by the size of menu and the physical location of an item within a menu. The pull-down and the grid menus were considered to be more satisfactory, simple, user friendly, and useful than the fisheye menu. 42.3 percent of subjects indicated that the grid menu was their preferred selection tool among the menus. The grid menu is an efficient and robust alternative menu choice for small and middle size menu lists.

Evaluation and Optimal Selection of Diversion Tunnels Construction Simulation Schemes Based on Multi-Level Fuzzy Comprehensive Evaluation

2013 ◽  
Vol 368-370 ◽  
pp. 1361-1365
Author(s):  
Lei Bi ◽  
Bing Yu Ren ◽  
Deng Hua Zhong ◽  
Lian Xing Hu
Keyword(s):  
Comprehensive Evaluation ◽  
Composite Index ◽  
Real Life ◽  
Fuzzy Comprehensive Evaluation ◽  
Optimal Selection ◽  
Construction Simulation ◽  
Entropy Weight ◽  
Multi Objective Programming ◽  
Multi Level ◽  
Selection Of

Traditional project evaluation and optimal selection based on multi-objective programming and Delphi is highly dependent on subjective cognition, difficult to define weighted coefficient and without considering the uncertainty of the indexes. To solve these problems, this paper builds a multi-level fuzzy comprehensive evaluation model for the evaluation and optimal selection of diversion tunnels construction simulation schemes, and unites entropy weight and analytic hierarchy process (AHP) to calculate composite index weights. Through the comprehensive evaluation in a real-life diversion tunnels, this method is proved advanced and intuitive for giving objective evaluations and providing optimization suggestions for program development.

scholarly journals Selection of antigen-specific, idiotype-positive B cells in transgenic mice expressing a rearranged M167-mu heavy chain gene.

1991 ◽  
Vol 174 (5) ◽  
pp. 1189-1201 ◽  
Author(s):  
J J Kenny ◽  
C O'Connell ◽  
D G Sieckmann ◽  
R T Fischer ◽  
D L Longo
Keyword(s):  
Bone Marrow ◽  
B Cells ◽  
Transgenic Mice ◽  
B Cell ◽  
Flow Cytometric Analysis ◽  
Low Frequency ◽  
Surface Expression ◽  
Chain Gene ◽  
Large Numbers ◽  
Selection Of

Flow cytometric analysis of antigen-specific, idiotype-positive (id+), B cell development in transgenic mice expressing a rearranged M167-mu gene shows that large numbers of phosphocholine (PC)-specific, M167-id+ B cells develop in the spleen and bone marrow of these mice. Random rearrangement of endogenous V kappa genes, in the absence of a subsequent receptor-driven selection, should give rise to equal numbers of T15- and M167-id+ B cells. The observed 100-500-fold amplification of M167-id+ B cells expressing an endogenous encoded V kappa 24]kappa 5 light chain in association with the M167 VH1-id transgene product appears to be an antigen driven, receptor-mediated process, since no amplification of non-PC-binding M167 VH1/V kappa 22, T15-id+ B cells occurs in these mu-only transgenic mice. The selection and amplification of antigen-specific, M167-id+ B cells requires surface expression of the mu transgene product; thus, no enhancement of M167-id+ B cells occurs in the M167 mu delta mem-transgenic mice, which cannot insert the mu transgene product into the B cell membrane. Surprisingly, no selection of PC-specific B cells occurs in M167-kappa-transgenic mice although large numbers of B cells expressing a crossreactive M167-id are present in the spleen and bone marrow of these mice. The failure to develop detectable numbers of M167-id+, PC-specific B cells in M167-kappa-transgenic mice may be due to a very low frequency of M167-VH-region formation during endogenous rearrangement of VH1 to D-JH segments. The somatic generation of the M167 version of a rearranged VH1 gene may occur in less than one of every 10(5) bone marrow B cells, and a 500-fold amplification of this M167-Id+ B cell would not be detectable by flow cytometry even though the anti-PC antibody produced by these B cells is detectable in the serum of M167-kappa-transgenic mice after immunization with PC.

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