scholarly journals Forecasting of the ionospheric quiet and disturbed ƒoF2values at a single location

Radio Science ◽  
2001 ◽  
Vol 36 (5) ◽  
pp. 1065-1071 ◽  
Author(s):  
Iwona Stanislawska ◽  
Zbigniew Zbyszynski
Keyword(s):  
Single Location

Validity of Proxy-Based Reports of Impulsivity and Aggression in Chinese Research on Suicidal Behavior

Crisis ◽  
2010 ◽  
Vol 31 (3) ◽  
pp. 137-142 ◽  
Author(s):  
Jing An ◽  
Michael R. Phillips ◽  
Kenneth R. Conner
Keyword(s):  
Risk Factors ◽  
Suicidal Behavior ◽  
Rural China ◽  
Suicide Attempters ◽  
Barratt Impulsiveness Scale ◽  
Single Location ◽  
Aggression Questionnaire ◽  
Community Controls

Background: In studies about the risk factors for suicidal behavior, the assessment of impulsiveness and aggression often depend on information from proxy informants. Aims: To assess the validity of proxy informants’ reports on impulsiveness and aggression in China. Methods: Modified Chinese versions of the Barratt Impulsiveness Scale (BIS-CV) and the Buss-Perry Aggression Questionnaire (AQ-CV) were administered to 131 suicide attempters treated at a hospital in rural China, to coresident relatives about the attempters, to 131 matched community controls, and to coresident relatives about the controls. Results: BIS-CV and AQ-CV total scores and subscale scores were all significantly higher for suicide attempters than for matched controls. Proxy informants considered subjects slightly more impulsive and aggressive than the subjects reported themselves. Subject-proxy concordance for total BIS-CV and AQ-CV scores were excellent for both attempters and controls (ICCs = 0.76–0.83). Concordance for the three BIS-CV subscales was 0.74–0.81 for attempters and 0.74–0.83 for controls. Concordance for the five AQ-CV subscales was 0.66–0.85 for attempters and 0.56–0.82 for controls. Limitations: Results are based on respondents from a single location in rural China. Conclusions: The results support the validity of the BIS-CV and AQ-CV and of research on suicidal behavior in China that uses proxy-based reports of impulsiveness and aggression.

Keeping Black Girls in School: A Systematic Review of Opportunities to Address Exclusionary Discipline Disparity

2021 ◽  
pp. 215336872098889
Author(s):  
Lynn A. Addington
Keyword(s):  
Systematic Review ◽  
Policy Development ◽  
The United States ◽  
Black Girls ◽  
Research Note ◽  
Future Research ◽  
Exclusionary Discipline ◽  
Girls Of Color ◽  
Single Location ◽  
Trauma Informed

A punitive legacy of the responses to school shootings in the United States is the expansion of exclusionary discipline. Black girls have disproportionately experienced this form of punishment as compared to white girls and non-Black girls of color. A small, but growing, body of research has examined the patterns and causes of this disparity. Current studies have made suggestions for possible solutions to address this disparity, but these recommendations are not readily accessible in a single location. A catalogue of these ideas could provide a useful foundation for policy development and evaluation. The present research note seeks to generate this resource by conducting a systematic review to identify and categorize recommendations aimed at reducing the discipline disparity experienced by Black girls. Based on this review, four categories emerged that center around: (1) culturally competent school programs, (2) enhanced teacher training, (3) spaces at school for empowering Black girls, and (4) trauma-informed student policies. This research note discusses these categories of recommendations using an intersectional framework and concludes with a summary of next steps to guide future research and policy work to address the disproportionate use of exclusionary discipline against Black girls.

scholarly journals mLoc-mRNA: predicting multiple sub-cellular localization of mRNAs using random forest algorithm coupled with feature selection via elastic net

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Prabina Kumar Meher ◽  
Anil Rai ◽  
Atmakuri Ramakrishna Rao
Keyword(s):  
Random Forest ◽  
Cellular Localization ◽  
Learning Algorithm ◽  
Elastic Net ◽  
Messenger Rnas ◽  
Computational Tool ◽  
Temporal Gene Expression ◽  
Single Location ◽  
Spatio Temporal ◽  
Localization Prediction

Abstract Background Localization of messenger RNAs (mRNAs) plays a crucial role in the growth and development of cells. Particularly, it plays a major role in regulating spatio-temporal gene expression. The in situ hybridization is a promising experimental technique used to determine the localization of mRNAs but it is costly and laborious. It is also a known fact that a single mRNA can be present in more than one location, whereas the existing computational tools are capable of predicting only a single location for such mRNAs. Thus, the development of high-end computational tool is required for reliable and timely prediction of multiple subcellular locations of mRNAs. Hence, we develop the present computational model to predict the multiple localizations of mRNAs. Results The mRNA sequences from 9 different localizations were considered. Each sequence was first transformed to a numeric feature vector of size 5460, based on the k-mer features of sizes 1–6. Out of 5460 k-mer features, 1812 important features were selected by the Elastic Net statistical model. The Random Forest supervised learning algorithm was then employed for predicting the localizations with the selected features. Five-fold cross-validation accuracies of 70.87, 68.32, 68.36, 68.79, 96.46, 73.44, 70.94, 97.42 and 71.77% were obtained for the cytoplasm, cytosol, endoplasmic reticulum, exosome, mitochondrion, nucleus, pseudopodium, posterior and ribosome respectively. With an independent test set, accuracies of 65.33, 73.37, 75.86, 72.99, 94.26, 70.91, 65.53, 93.60 and 73.45% were obtained for the respective localizations. The developed approach also achieved higher accuracies than the existing localization prediction tools. Conclusions This study presents a novel computational tool for predicting the multiple localization of mRNAs. Based on the proposed approach, an online prediction server “mLoc-mRNA” is accessible at http://cabgrid.res.in:8080/mlocmrna/. The developed approach is believed to supplement the existing tools and techniques for the localization prediction of mRNAs.

Design of Two-Dimensional Ultrasonic Phased Array Transducers

2005 ◽  
Vol 127 (3) ◽  
pp. 336-344 ◽  
Author(s):  
Shyamal C. Mondal ◽  
Paul D. Wilcox ◽  
Bruce W. Drinkwater
Keyword(s):  
Phased Array ◽  
Three Dimensional ◽  
Array Element ◽  
Two Dimensional ◽  
Circular Array ◽  
Single Location ◽  
Ultrasonic Phased Array ◽  
3D Point Spread Function ◽  
3D Volume ◽  
Simulation And Evaluation

Two-dimensional (2D) phased arrays have the potential to significantly change the way in which engineering components in safety critical industries are inspected. In addition to enabling a three-dimensional (3D) volume of a component to be inspected from a single location, they could also be used in a C-scan configuration. The latter would enable any point in a component to be interrogated over a range of solid angles, allowing more accurate defect characterization and sizing. This paper describes the simulation and evaluation of grid, cross and circular 2D phased array element configurations. The aim of the cross and circle configurations is to increase the effective aperture for a given number of elements. Due to the multitude of possible array element configurations a model, based on Huygens’ principle, has been developed to allow analysis and comparison of candidate array designs. In addition to the element configuration, key issues such as element size, spacing, and frequency are discussed and quantitatively compared using the volume of the 3D point spread function (PSF) as a measurand. The results of this modeling indicate that, for a given number of elements, a circular array performs best and that the element spacing should be less than half a wavelength to avoid grating lobes. A prototype circular array has been built and initial results are presented. These show that a flat bottomed hole, half a wavelength in diameter, can be imaged. Furthermore, it is shown that the volume of the 3D reflection obtained experimentally from the end of the hole compares well with the volume of the 3D PSF predicted for the array at that point.

scholarly journals A Linkage-Based Genome Assembly for the Mosquito Aedes albopictus and Identification of Chromosomal Regions Affecting Diapause

Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 167
Author(s):  
John H. Boyle ◽  
Pasi M. A. Rastas ◽  
Xin Huang ◽  
Austin G. Garner ◽  
Indra Vythilingam ◽  
...  
Keyword(s):  
Linkage Map ◽  
Aedes Albopictus ◽  
Dna Sequences ◽  
Genome Assembly ◽  
Single Copy ◽  
Health Concern ◽  
Candidate Snps ◽  
Single Location ◽  
Asian Tiger ◽  
Photoperiodic Diapause

The Asian tiger mosquito, Aedes albopictus, is an invasive vector mosquito of substantial public health concern. The large genome size (~1.19–1.28 Gb by cytofluorometric estimates), comprised of ~68% repetitive DNA sequences, has made it difficult to produce a high-quality genome assembly for this species. We constructed a high-density linkage map for Ae. albopictus based on 111,328 informative SNPs obtained by RNAseq. We then performed a linkage-map anchored reassembly of AalbF2, the genome assembly produced by Palatini et al. (2020). Our reassembled genome sequence, AalbF3, represents several improvements relative to AalbF2. First, the size of the AalbF3 assembly is 1.45 Gb, almost half the size of AalbF2. Furthermore, relative to AalbF2, AalbF3 contains a higher proportion of complete and single-copy BUSCO genes (84.3%) and a higher proportion of aligned RNAseq reads that map concordantly to a single location of the genome (46%). We demonstrate the utility of AalbF3 by using it as a reference for a bulk-segregant-based comparative genomics analysis that identifies chromosomal regions with clusters of candidate SNPs putatively associated with photoperiodic diapause, a crucial ecological adaptation underpinning the rapid range expansion and climatic adaptation of A. albopictus.

Defining potential multi-hazard and multi-risk combinations for infrastructure and other economic sectors using empirical pan-European examples

2021 ◽  
Author(s):  
James Daniell ◽  
Andreas Schaefer ◽  
Jens Skapski ◽  
Roberth Romero ◽  
Philip Ward ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Risk Model ◽  
Volcanic Eruptions ◽  
Economic Effects ◽  
Storm Events ◽  
Economic Sectors ◽  
European Database ◽  
Single Location ◽  
Eu Project

<p>A new complex world is emerging where a natural hazards event in a certain location, can have significant impacts on a different location either interlinked via economic sectors, infrastructure systems or other social relationships. In the past this was often not able to be quantified, but with increased reporting we are able to define these interactions better than previously.</p><p>For a single location, multiple hazards can also occur in tandem, or one after another causing impacts or as a standalone. However, standalone events currently take on a whole new complexity with coronavirus protocols.</p><p>Within the course of the EU project NARSIS (New Approach to Reactor Safety ImprovementS), sites of decommissioned nuclear power plants (NPPs) were investigated for external hazards combinations using a multi-hazard approach which took into account the joint probabilities including operational times and the effects of subsequent events. Here, different external hazards were applied such as tornadoes, lightning, earthquakes, floods and volcanic eruptions in tandem calibrated on historical events.</p><p>In this work, we build a pan-European database using the backbone of CATDAT to define multi-hazard events of relevance with overlapping hazard and loss effects including events in 2020 and 2021 with significant effects due to coronavirus in combination with another hazard. We focus on the 1980-2021 time period within this database, although many older events have also been collected.</p><p>In the year 2020, numerous events including the Croatian and Greece/Turkey earthquakes, medicanes, bushfires and many flood and storm events showed the complexity of combining multi-hazard protocols concurrently.</p><p>The database will be extended within the MYRIAD-EU project in order to inform a multi-risk, multi-sector, systemic approach to risk management. Using empirical examples of socio-economic effects is one key step to understand the overlaps, and important within the calibration process of any multi-risk model.</p>

scholarly journals BASECOL2020 New Technical Design

Atoms ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 69 ◽  
Author(s):  
Yaye-Awa Ba ◽  
Marie-Lise Dubernet ◽  
Nicolas Moreau ◽  
Carlo Maria Zwölf
Keyword(s):  
Interstellar Medium ◽  
Data Center ◽  
Molecular Data ◽  
International Standards ◽  
Rate Coefficients ◽  
Collisional Excitation ◽  
Excitation Rate ◽  
Single Location ◽  
Molecular Databases ◽  
Key Features

The BASECOL database has been created and scientifically enriched since 2004. It contains collisional excitation rate coefficients of molecules for application to the interstellar medium and to cometary atmospheres. Recently, major technical updates have been performed in order to be compliant with international standards for management of data and in order to provide a more friendly environment to query and to present the data. The current paper aims at presenting the key features of the technical updates and to underline the compatibility of BASECOL database with the Virtual Atomic and Molecular Data Center. This latter aims to interconnect atomic and molecular databases, thus providing a single location where users can access atomic and molecular data.

scholarly journals Relational and Identity-Making Capabilities in the Internationalization Process: The Case of US Food Service Sector

2016 ◽  
Vol 11 (6) ◽  
pp. 205
Author(s):  
Valentina Della Corte ◽  
Giovanna Del Gaudio
Keyword(s):  
Fast Food ◽  
Service Sector ◽  
Food Service ◽  
Internationalization Process ◽  
Local Identity ◽  
Single Location ◽  
Different Types ◽  
Fast Food Restaurants ◽  
Internationalization Strategies ◽  
Relational Capabilities

<p>This paper aims at exploring the link between internationalization strategies and local identity. More precisely, this study analyzes how firms manage this relationship, understanding if a firm can express the local identity and to what extent this latter can be extended through without jeopardizing the essential soul of its products/services.<br />The analysis is developed according to a double level that includes the recognition of both distinctive resources and competences and the specific relational capabilities necessary in the internationalization process. Furthermore, the strength of this paper is represented by the examination of different types of firms (single location full-service restaurants, chain restaurants and fast food restaurants) operating in the food service sector.</p>

Estimate of flame radiance via a single location measurement in liquid pool fires

1991 ◽  
Vol 86 (3) ◽  
pp. 223-228 ◽  
Author(s):  
A. Hamins ◽  
M. Klassen ◽  
J. Gore ◽  
T. Kashiwagi
Keyword(s):  
Liquid Pool ◽  
Pool Fires ◽  
Single Location ◽  
Location Measurement

scholarly journals First Report of Leptosphaeria biglobosa (Blackleg) on Brassica oleracea (Cabbage) in Mexico

Plant Disease ◽  
2010 ◽  
Vol 94 (6) ◽  
pp. 791-791 ◽  
Author(s):  
A. Dilmaghani ◽  
M. H. Balesdent ◽  
T. Rouxel ◽  
O. Moreno-Rico
Keyword(s):  
Brassica Oleracea ◽  
Sequence Data ◽  
Leptosphaeria Maculans ◽  
The United States ◽  
Internal Transcribed Spacers ◽  
First Report ◽  
5.8S Rdna ◽  
Single Location ◽  
Leptosphaeria Biglobosa ◽  
Β Tubulin

Broccoli (Brassica oleracea var. italica), cauliflower (B. oleracea var. botrytis), and cabbage (B. oleracea var. capitata) have been grown in central Mexico since 1970, with 21,000 ha cropped in 2001. In contrast, areas grown with oilseed rape (B. napus) are very limited in Mexico (<8,000 ha). Blackleg, a destructive disease of B. napus in most parts of the world, was first observed in Mexico in Zacatecas and Aguascalientes in 1988 on B. oleracea, causing as much as 70% yield loss. A species complex of two closely related Dothideomycete species, Leptosphaeria maculans and L. biglobosa, is associated with this disease of crucifers (1), but leaf symptoms on susceptible plants are different, with L. maculans typically causing >15-mm pale gray lesions with numerous pycnidia, whereas L. biglobosa causes dark and smaller lesions only containing a few pycnidia. Having a similar epidemiology, both species can be present on the same plants at the same time, and symptom confusion can occur as a function of the physiological condition of the plant or expression of plant resistance responses. A total of 209 isolates from symptomatic B. oleracea leaves were collected from three fields in central states of Mexico (58 to 71 isolates per location). All leaves showed similar symptoms, including a 10- to 15-mm tissue collapse with an occasional dark margin. Cotyledons of seven B. napus differentials were inoculated with conidia of all the isolates as described by Dilmaghani et al. (1). Two hundred isolates caused tissue collapse typical of L. maculans. However, nine obtained from white cabbage in a single location in Aguascalientes caused <5-mm dark lesions. When inoculated onto cotyledons of three B. oleracea genotypes commonly grown in Mexico (cvs. Domador, Monaco, and Iron Man), the nine isolates caused a range of symptoms characterized by tissue collapse (maximum 10 to 15 mm), showing the presence of patches of black necrotic spots within the collapse. The occasional presence of a few pycnidia allowed us to reisolate the fungus for molecular identification. ITS1-5.8S-ITS2, (internal transcribed spacers and 5.8S rDNA), actin, and β-tubulin sequences were obtained as described previously (4). Multiple gene genealogies based on these sequence data showed two subclades of L. biglobosa: L. biglobosa ‘occiaustralensis’ (one isolate; ITS [AM410082], actin [AM410084], and β-tubulin [AM410083]) and L. biglobosa ‘canadensis’ (eight isolates; ITS [AJ550868], actin [AY748956], and β-tubulin [AY749004]) (3,4), which were previously described on B. napus in the United States, Canada, and Chile. To our knowledge, this is the first report of L. biglobosa in Mexico. Previously, this species has only been reported once on B. oleracea without discrimination into subclades (2). In the Aguascalientes sampling, 24% of the isolates were L. biglobosa, similar to Canadian locations where this species is still common as compared with L. maculans (1). The large proportion of sampled L. biglobosa ‘canadensis’, highlights the prevalence of this subclade throughout the American continent (1). References: (1) A. Dilmaghani et al. Plant Pathol. 58:1044, 2009. (2) E. Koch et al. Mol. Plant-Microbe Interact. 4:341, 1991. (3) E. Mendes-Pereira et al. Mycol Res. 107:1287, 2003. (4) L. Vincenot et al. Phytopathology 98:321, 2008.

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