scholarly journals Colour maps for fisheries acoustic echograms

2019 ◽  
Vol 77 (2) ◽  
pp. 826-834
Author(s):  
Robert E Blackwell ◽  
Richard Harvey ◽  
Bastien Y Queste ◽  
Sophie Fielding
Keyword(s):  
Large Scale ◽  
Colour Space ◽  
Acoustic Data ◽  
Green Colour ◽  
Colour Contrast ◽  
Survey System ◽  
Perceptual Contrast ◽  
Large Scale Survey ◽  
Colour Blindness ◽  
Perceived Variety

Abstract Echograms are used to visualize fisheries acoustic data, but choice of colour map has a significant effect on appearance. Quantitative echograms should use colour maps, which are colourful (have a perceived variety and intensity of colours), sequential (have monotonic lightness), and perceptually uniform (have consistency of perceived colour contrast over their range). We measure whether colour maps are colourful (M^(3)>0), sequential (rs=±1), and perceptually uniform (ρ = 1) using an approximately perceptually uniform colour space (CIELAB). Whilst all the fisheries acoustic colour maps tested are colourful, none is sequential or perceptually uniform. The widely used EK500 colour map is extremely colourful (M^(3)=186), not sequential (rs=0.06), and has highly uneven perceptual contrast over its range (ρ=0.26). Of the fisheries acoustic colour maps tested, the Large Scale Survey System default colour map is least colourful (M^(3)=79), but comes closest to being sequential (rs=−0.94), and perceptually uniform (ρ=0.95). Modern colour maps have been specifically designed for colour contrast consistency, accessibility for viewers with red-green colour-blindness, and legibility when printed in monochrome, and may be better suited to the presentation and interpretation of quantitative fisheries acoustic echograms.

Evaluating Large-Scale STEM Outreach Efficacy with a Consistent Theme: Thermodynamics for Elementary School Students

2018 ◽  
Author(s):  
Joseph DeWilde ◽  
Esha Rangnekar ◽  
Jeffrey Ting ◽  
Joseph Franek ◽  
Frank S. Bates ◽  
...  
Keyword(s):  
Elementary School ◽  
Learning Outcomes ◽  
Elementary School Students ◽  
Large Scale ◽  
College Education ◽  
School Students ◽  
Central Concept ◽  
Specific Goal ◽  
Survey System ◽  
Society Today

A biannual chemistry demonstration-based show named “Energy and U” was created to extend the general outreach themes of STEM fields and a college education with a specific goal: to teach the First Law of Thermodynamics to elementary school students. Energy is a central concept in chemical education, most STEM disciplines, and it is the concept at the foundation of many of the greatest challenges faced by society today. The effectiveness of the program was analyzed using a clicker survey system. This study provides one of the first examples of incorporating real-time feedback into large- scale chemistry-based outreach events for elementary school students in order to quantify and better understand the broader impact and learning outcomes.

scholarly journals Occurrence and Molecular Variability of Kiwifruit Viruses in Actinidia deliciosa ‘Xuxiang’ in the Shaanxi Province of China

Plant Disease ◽  
2019 ◽  
Vol 103 (6) ◽  
pp. 1309-1318 ◽  
Author(s):  
Lei Zhao ◽  
Wen Yang ◽  
Yuanle Zhang ◽  
Zhanmin Wu ◽  
Qiao-Chun Wang ◽  
...  
Keyword(s):  
Large Scale ◽  
Primary Source ◽  
Potato Virus X ◽  
Shaanxi Province ◽  
Multiple Infection ◽  
First Report ◽  
Molecular Variability ◽  
Large Scale Survey ◽  
Actinidia Spp ◽  
Main Producer

Kiwifruit (Actinidia spp.) is an economically substantial fruit crop with China the main producer. China is the primary source of wild kiwifruit and the largest producer of kiwifruit in terms of both production and planting area, and Shaanxi province is the largest kiwifruit producer in China. Previous studies reported presence of kiwifruit viruses in Actinidia chinensis. In this study, six viruses were identified in kiwifruit ‘Xuxiang’ (A. deliciosa) in Shaanxi, China. The incidence, distribution, and genetic diversity of these viruses were studied. The results showed that Actinidia virus A (AcVA), Actinidia virus B (AcVB), Actinidia chlorotic ringspot-associated virus (AcCRaV), cucumber mosaic virus (CMV), apple stem grooving virus (ASGV), and potato virus X (PVX) were the main viruses infecting Xuxiang kiwifruit in Shaanxi, China. Incidence of the various viruses with both single and multiple infection varied with different kiwifruit-growing counties. For single virus infection, the highest and the lowest numbers of samples infected were about 22 for AcCRaV and 0 for AcVB in Meixian out of 170 samples, 12 for AcVA and 0 for CMV in Zhouzhi out of 120 samples, 10 for AcVA and 0 for AcVB, AcCRaV, ASGV, PVX, and CMV in Yangling out of 70 samples, and 8 for AcCRaV and CMV and 0 for AcVA, AcVB, ASGV, and PVX in Hanzhong out of 80 samples, respectively. Samples which were multiply infected with two or more viruses were also detected. Analysis of the phylogenetic tree of these viruses showed some genetic variability in the AcVA, AcVB, and AcCRaV isolates of Shaanxi kiwifruit. There was no obvious molecular variation in the coat protein genes of ASGV, CMV, and PVX virus isolates from Shaanxi kiwifruit. The present study is the first large-scale survey of kiwifruit viruses in Shaanxi, China. To our knowledge, this is the first report of PVX infecting kiwifruit and the first report of molecular variability of AcVA, AcVB, and AcCRaV. These results provide important data for studying the genetic evolution of AcVA, AcVB, AcCRaV, ASGV, CMV, and PVX.

scholarly journals Correcting Citizens’ Misperceptions about non-Western Immigrants: Corrective Information, Interpretations, and Policy Opinions

2020 ◽  
pp. 1-10 ◽  
Author(s):  
Frederik Juhl Jørgensen ◽  
Mathias Osmundsen
Keyword(s):  
Immigration Policy ◽  
Large Scale ◽  
Total Population ◽  
Survey Experiment ◽  
Correct Information ◽  
The Usa ◽  
Large Scale Survey ◽  
Nationally Representative ◽  
Information Change ◽  
Corrective Information

Abstract Can corrective information change citizens’ misperceptions about immigrants and subsequently lead to favorable immigration opinions? While prior studies from the USA document how corrections about the size of minority populations fail to change citizens’ immigration-related opinions, they do not examine how other facts that speak to immigrants’ cultural or economic dependency rates can influence immigration policy opinions. To extend earlier work, we conducted a large-scale survey experiment fielded to a nationally representative sample of Danes. We randomly expose participants to information about non-Western immigrants’ (1) welfare dependency rate, (2) crime rate, and (3) proportion of the total population. We find that participants update their factual beliefs in light of correct information, but reinterpret the information in a highly selective fashion, ultimately failing to change their policy preferences.

Red-green colour blindness in Singaporean children

2008 ◽  
Author(s):  
Audrey Chia ◽  
Gus Gazzard ◽  
Louis Tong ◽  
Xiaoe Zhang ◽  
Ee-Ling Sim ◽  
...  
Keyword(s):  
Green Colour ◽  
Colour Blindness

scholarly journals P89.07 A Large-Scale Survey of IDH1/2 Mutation in Chinese Patients With NSCLC

2021 ◽  
Vol 16 (3) ◽  
pp. S691
Author(s):  
M. Jin ◽  
J. Zhang ◽  
H. Zhu ◽  
S. Chen ◽  
Z. Liu ◽  
...  
Keyword(s):  
Large Scale ◽  
Chinese Patients ◽  
Large Scale Survey

Madri single che lavorano: uno studio longitudinale

2009 ◽  
pp. 123-137
Author(s):  
Tess Ridge ◽  
Jane Millar
Keyword(s):  
Large Scale ◽  
Tax Credits ◽  
Poor People ◽  
Limited Mobility ◽  
Lone Parents ◽  
Poverty Risk ◽  
Lone Mothers ◽  
Rich People ◽  
Large Scale Survey ◽  
The Uk

- Analysis of poverty dynamics based on large-scale survey data shows that there is limited mobility across the income distribution for most individuals and families. Some people may get better-off over the lifecourse, as their careers develop and wages rise, but overall most poor people do not become very rich and most rich people do not become very poor. Lone parents are at high risk of poverty in the UK, but this poverty risk is reduced for those who are in employment and who receive state financial support through Tax Credits to supplement their wages. This article reports on longitudinal qualitative research which has involved repeat interviews with lone mothers and their children over a period of three to four years. The analysis here explores the experiences of sustaining employment while living on a low, but complex, income and highlights the challenges faced in seeking financial security in this context.

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