Academic literature on the topic 'Founder events'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Founder events.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Founder events"
1
Tournebize, Rémi, Gillian Chu, and Priya Moorjani. "Reconstructing the history of founder events using genome-wide patterns of allele sharing across individuals." PLOS Genetics 18, no. 6 (2022): e1010243. http://dx.doi.org/10.1371/journal.pgen.1010243.
Full textAbstract:
Founder events play a critical role in shaping genetic diversity, fitness and disease risk in a population. Yet our understanding of the prevalence and distribution of founder events in humans and other species remains incomplete, as most existing methods require large sample sizes or phased genomes. Thus, we developed ASCEND that measures the correlation in allele sharing between pairs of individuals across the genome to infer the age and strength of founder events. We show that ASCEND can reliably estimate the parameters of founder events under a range of demographic scenarios. We then apply ASCEND to two species with contrasting evolutionary histories: ~460 worldwide human populations and ~40 modern dog breeds. In humans, we find that over half of the analyzed populations have evidence for recent founder events, associated with geographic isolation, modes of sustenance, or cultural practices such as endogamy. Notably, island populations have lower population sizes than continental groups and most hunter-gatherer, nomadic and indigenous groups have evidence of recent founder events. Many present-day groups––including Native Americans, Oceanians and South Asians––have experienced more extreme founder events than Ashkenazi Jews who have high rates of recessive diseases due their known history of founder events. Using ancient genomes, we show that the strength of founder events differs markedly across geographic regions and time––with three major founder events related to the peopling of Americas and a trend in decreasing strength of founder events in Europe following the Neolithic transition and steppe migrations. In dogs, we estimate extreme founder events in most breeds that occurred in the last 25 generations, concordant with the establishment of many dog breeds during the Victorian times. Our analysis highlights a widespread history of founder events in humans and dogs and elucidates some of the demographic and cultural practices related to these events.
2
Basque, Joëlle, and Ann Langley. "Invoking Alphonse: The founder figure as a historical resource for organizational identity work." Organization Studies 39, no. 12 (2018): 1685–708. http://dx.doi.org/10.1177/0170840618789211.
Full textAbstract:
There has been growing interest in the rhetorical use of history to express organizational identity claims. Yet the evolving role of the founder figure in managerial accounts has not so far received specific attention. In this study, we examine how the founder figure is used to articulate, enact, stretch, preserve or refresh expressions of organizational identity, drawing on an 80-year magazine archive of a financial cooperative. We identify five modes of founder invocation, and show how distance from founding events leads to increasing abstraction in linkages between the founder and organizational identity claims. The paper offers a dynamic perspective on the mobilization of the founder in organizational identity construction as well as an understanding of how and why founders may remain established identity markers long after their demise.
3
Ortega‐Beltran, Alejandro, Kenneth A. Callicott, and Peter J. Cotty. "Founder events influence structures of Aspergillus flavus populations." Environmental Microbiology 22, no. 8 (2020): 3522–34. http://dx.doi.org/10.1111/1462-2920.15122.
Full text
4
Novak, Stephen J., Richard N. Mack, and Pamela S. Soltis. "Genetic variation in Bromus tectorum (Poaceae): introduction dynamics in North America." Canadian Journal of Botany 71, no. 11 (1993): 1441–48. http://dx.doi.org/10.1139/b93-174.
Full textAbstract:
The Eurasian grass Bromus tectorum was collected first in its 19th century invasion of western America in six widely separated locales. We used allozyme variability to evaluate whether populations at these locales and elsewhere in North America stem from different founders. By identifying the same geographically restricted alleles in both introduced populations and potential source populations and tracing the distribution of these alleles in western North America, we identified a minimum of five or six independent founder events. These alleles were often at their highest frequencies in populations at or near the earliest collection sites. Founder events likely occurred near Cache Creek, B.C., Ritzville, Wash., Juniper Flat, Nev., Emigrant Pass, Nev., and either Dubois, Idaho, or Provo, Utah, or both. Multiple introductions and the spread of allelic variants produced a mosaic of genotypes throughout western North America and partially offset the reduction in genetic variation this alien grass would have probably incurred during intercontinental migration. Key words: Bromus tectorum, biological invasions, multiple introductions, shared alleles, enzyme electrophoresis.
5
Shinagawa, Jun, Hideaki Moteki, Shin-ya Nishio, Yoshihiro Noguchi, and Shin-ichi Usami. "Haplotype Analysis of GJB2 Mutations: Founder Effect or Mutational Hot Spot?" Genes 11, no. 3 (2020): 250. http://dx.doi.org/10.3390/genes11030250.
Full textAbstract:
The GJB2 gene is the most frequent cause of congenital or early onset hearing loss worldwide. In this study, we investigated the haplotypes of six GJB2 mutations frequently observed in Japanese hearing loss patients (i.e., c.235delC, p.V37I, p.[G45E; Y136X], p.R143W, c.176_191del, and c.299_300delAT) and analyzed whether the recurring mechanisms for each mutation are due to founder effects or mutational hot spots. Furthermore, regarding the mutations considered to be caused by founder effects, we also calculated the age at which each mutation occurred using the principle of genetic clock analysis. As a result, all six mutations were observed in a specific haplotype and were estimated to derive from founder effects. Our haplotype data together with their distribution patterns indicated that p.R143W and p.V37I may have occurred as multiple events, and suggested that both a founder effect and hot spot may be involved in some mutations. With regard to the founders’ age of frequent GJB2 mutations, each mutation may have occurred at a different time, with the oldest, p.V37I, considered to have occurred around 14,500 years ago, and the most recent, c.176_191del, considered to have occurred around 4000 years ago.
6
Gomes, Marleide da Mota, and Eliasz Engelhardt. "Meynert and the biological German psychiatry." Arquivos de Neuro-Psiquiatria 70, no. 11 (2012): 894–96. http://dx.doi.org/10.1590/s0004-282x2012001100013.
Full textAbstract:
Theodor Hermann Meynert (1833-1892), a German-Austrian neuropathologist and anatomist, is known as one of the founders of the Brain Psychiatry. He was the most arduous defender of the bridge between psychological and neurophysiological events, both dependent on specific neuroanatomical structures. Juliano Moreira (1873-1933), the founder of the Brazilian scientific psychiatry, is also mentioned, as well as the influence he received from the German psychiatry, mainly Emil Kraepelin's (1856-1926). Finally, the rapprochement of Psychiatry and Neurology is considered mostly in common areas as Neuropsychiatry.
7
Goodnight, Charles J. "On the Effect of Founder Events on Epistatic Genetic Variance." Evolution 41, no. 1 (1987): 80. http://dx.doi.org/10.2307/2408974.
Full text
8
Rundle, Howard D., Arne O. Mooers, and Michael C. Whitlock. "Single Founder-Flush Events and the Evolution of Reproductive Isolation." Evolution 52, no. 6 (1998): 1850. http://dx.doi.org/10.2307/2411356.
Full text
9
Rodrigues, Pedro, Ricardo Jorge Lopes, Roberto Resendes, Jaime Albino Ramos, and Regina Tristao Cunha. "Genetic Diversity of the Azores BlackbirdsTurdus merulaReveals Multiple Founder Events." Acta Ornithologica 51, no. 2 (2016): 221–34. http://dx.doi.org/10.3161/00016454ao2016.51.2.008.
Full text
10
Goodnight, Charles J. "ON THE EFFECT OF FOUNDER EVENTS ON EPISTATIC GENETIC VARIANCE." Evolution 41, no. 1 (1987): 80–91. http://dx.doi.org/10.1111/j.1558-5646.1987.tb05772.x.
Full textDissertations / Theses on the topic "Founder events"
1
Cameron, Emilie C. "Fruit Fly Pests of Northwestern Australia." University of Sydney, 2007. http://hdl.handle.net/2123/1711.
Full textAbstract:
Doctor of Philosophy(PhD),<br>Until recently, Northwestern Australia was thought to be relatively free of serious fruit fly pests. Although a noxious strain, present in Darwin since 1985, was widely believed to be an infestation of the Queensland fruit fly, Bactrocera tryoni, from the East coast, the fruit flies present outside this area were believed to be the benign endemic species, B. aquilonis. However, during the year 2000, infestations of fruit flies were discovered on major commercial crops in both Western Australia and the Northern Territory. It was not known whether these outbreaks were due to an invasion of the major pest species, Bactrocera tryoni, a change in the behaviour of B. aquilonis, or a hybridisation event between the two species. Finding the source of these outbreaks has been complicated by the fact that, since B. tryoni and B. aquilonis are virtually indistinguishable morphologically, it was not known which species are present in the region. Traditionally any tryoni complex fly caught in the Northwest was called B. aquilonis based solely on location. In order to get a good population profile of the region, an extensive trapping program was set up to include flies from urban areas, commercial crops and natural areas where the benign strain is thought to remain. Tests of genetic differentiation and clustering analyses revealed a high degree of homogeneity in the Northwest samples, suggesting that just one species is present in the region. The Northwest samples were genetically differentiated from the Queensland samples but only to a small degree (FST =0.0153). MtDNA sequencing results also showed a small degree of differentiation between these regions. A morphological study of wing shape indicated that there are some minor identifiable morphological differences between East coast and Northwest laboratory reared flies. This difference was greater than that seen between B. jarvisi populations across the same geographic range. The results suggest that the flies caught in the Northwest are a separate population of B. tryoni. Soon after pest flies were discovered in Darwin, a population became established in Alice Springs. This population had a low genetic diversity compared with Queensland and Darwin populations, and showed evidence of being heavily founded. In 2000, an outbreak was discovered in the nearby town of Ti Tree. Due to the geographic and genetic similarity of these populations, Alice Springs was determined to be the source of the Ti Tree outbreak. To investigate the founding of these populations, a program was developed to estimate the propagule size. Using a simulation method seven different statistics were tested for estimating the propagule size of an outbreak population. For outbreaks originating from populations with high genetic diversity, the number of alleles was a good estimator of propagule size. When, however, the genetic diversity of the source population was already reduced, allele frequency measures, particularly the likelihood of obtaining the outbreak population from the source population, gave more accurate estimates. Applying this information to the Alice Springs samples, it was estimated that just five flies were needed to found the major population in and around Alice Springs. For Ti Tree, the propagule size was estimated to be 27 flies (minimum 10). In 2000, a much larger outbreak occurred in the developing horticultural region of Kununurra in northern Western Australia. An important question for the management of the problem is whether there is an established fly population or the flies are reinvading each year. This population was found to have a large amount of gene flow from the Northern Territory. Within the Kununurra samples, one group of flies was genetically differentiated from all the other samples. This group came from a small geographic area on the periphery of Kununurra and appeared to be the result of an invasion into this area at the time when the population was building up following the dry season. A further threat to the Northwest horticultural regions comes from B. jarvisi. A recent increase in the host range of this species has lead to speculation that it may become a greater pest in Northwestern Australia. At the present time, protocols for the population monitoring and disinfestation of this species are not in place. Here it is shown that B. jarvisi eggs are more heat tolerant than B. tryoni eggs and that monitoring of B. jarvisi populations is possible using cue lure traps placed according to fruiting time and location of their favoured host, Planchonia careya.
2
Cameron, Emilie C. "Fruit Fly Pests of Northwestern Australia." Thesis, The University of Sydney, 2006. http://hdl.handle.net/2123/1711.
Full textAbstract:
Until recently, Northwestern Australia was thought to be relatively free of serious fruit fly pests. Although a noxious strain, present in Darwin since 1985, was widely believed to be an infestation of the Queensland fruit fly, Bactrocera tryoni, from the East coast, the fruit flies present outside this area were believed to be the benign endemic species, B. aquilonis. However, during the year 2000, infestations of fruit flies were discovered on major commercial crops in both Western Australia and the Northern Territory. It was not known whether these outbreaks were due to an invasion of the major pest species, Bactrocera tryoni, a change in the behaviour of B. aquilonis, or a hybridisation event between the two species. Finding the source of these outbreaks has been complicated by the fact that, since B. tryoni and B. aquilonis are virtually indistinguishable morphologically, it was not known which species are present in the region. Traditionally any tryoni complex fly caught in the Northwest was called B. aquilonis based solely on location. In order to get a good population profile of the region, an extensive trapping program was set up to include flies from urban areas, commercial crops and natural areas where the benign strain is thought to remain. Tests of genetic differentiation and clustering analyses revealed a high degree of homogeneity in the Northwest samples, suggesting that just one species is present in the region. The Northwest samples were genetically differentiated from the Queensland samples but only to a small degree (FST =0.0153). MtDNA sequencing results also showed a small degree of differentiation between these regions. A morphological study of wing shape indicated that there are some minor identifiable morphological differences between East coast and Northwest laboratory reared flies. This difference was greater than that seen between B. jarvisi populations across the same geographic range. The results suggest that the flies caught in the Northwest are a separate population of B. tryoni. Soon after pest flies were discovered in Darwin, a population became established in Alice Springs. This population had a low genetic diversity compared with Queensland and Darwin populations, and showed evidence of being heavily founded. In 2000, an outbreak was discovered in the nearby town of Ti Tree. Due to the geographic and genetic similarity of these populations, Alice Springs was determined to be the source of the Ti Tree outbreak. To investigate the founding of these populations, a program was developed to estimate the propagule size. Using a simulation method seven different statistics were tested for estimating the propagule size of an outbreak population. For outbreaks originating from populations with high genetic diversity, the number of alleles was a good estimator of propagule size. When, however, the genetic diversity of the source population was already reduced, allele frequency measures, particularly the likelihood of obtaining the outbreak population from the source population, gave more accurate estimates. Applying this information to the Alice Springs samples, it was estimated that just five flies were needed to found the major population in and around Alice Springs. For Ti Tree, the propagule size was estimated to be 27 flies (minimum 10). In 2000, a much larger outbreak occurred in the developing horticultural region of Kununurra in northern Western Australia. An important question for the management of the problem is whether there is an established fly population or the flies are reinvading each year. This population was found to have a large amount of gene flow from the Northern Territory. Within the Kununurra samples, one group of flies was genetically differentiated from all the other samples. This group came from a small geographic area on the periphery of Kununurra and appeared to be the result of an invasion into this area at the time when the population was building up following the dry season. A further threat to the Northwest horticultural regions comes from B. jarvisi. A recent increase in the host range of this species has lead to speculation that it may become a greater pest in Northwestern Australia. At the present time, protocols for the population monitoring and disinfestation of this species are not in place. Here it is shown that B. jarvisi eggs are more heat tolerant than B. tryoni eggs and that monitoring of B. jarvisi populations is possible using cue lure traps placed according to fruiting time and location of their favoured host, Planchonia careya.
3
Broders, Hugh G. "Population genetic structure and the effect of founder events on the genetic variability of moose (Alces alces) in Canada." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0035/MQ47418.pdf.
Full text
4
Winbo, Annika. "Long QT syndrome in Sweden : founder effects and associated cardiac phenotypes." Doctoral thesis, Umeå universitet, Pediatrik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-57724.
Full textAbstract:
Background: We aimed to increase the knowledge regarding the familial arrhythmogenic disorder Long QT Syndrome (LQTS) and its recessive variant Jervell and Lange-Nielsen Syndrome (JLNS) in Sweden, including prevalences and clinical phenotypes. A specific focus was directed towards two KCNQ1 mutations –p.Y111C and p.R518X- commonly identified in Swedish LQTS index cases. Methods: Cases and families with LQTS (p.Y111C or p.R518X) and JLNS were recruited via regional clinical practices, national referrals to the Clinical Genetics laboratory, Umeå University Hospital, and a national inventory. Molecular genetics methods were used for case ascertainment. Clinical data was obtained via medical records, a questionnaire, and/or an interview. Electrocardiograms were manually assessed. In p.R518X heterozygotes intra-familial phenotypic variability (QTc and cardiac events) was assessed by analysis of sequence variants (modifier genes). The origins of the mutations p.Y111C and p.R518X were investigated using genealogical and haplotype analysis (microsatellite markers). In families sharing a common haplotype mutation age and associated prevalence was analyzed using ESTIAGE and DMLE computer software. Results: We identified p.Y111C (170 mutation-carriers) and p.R518X (101 mutation-carriers) as two major causes of LQTS/JLNS in Sweden. LQTS phenotype was revealed to be relatively benign in p.Y111C and p.R518X (annual incidence of life-threatening cardiac events, before therapy 0.05% and 0.04%, respectively). Gender-specific effects of genetic modifiers on phenotypic expression were seen. A founder origin, approximately 600-700 years ago in two northern river valleys was established for p.Y111C and p.R518X, and a high prevalence of LQTS founder descendants suggested. A minimum JLNS prevalence of 1:200 000 in preadolescent Swedish children was revealed. JLNS phenotype was mainly severe, with a cumulative incidence of life-threatening cardiac events of 53% (annual incidence rate before therapy 5%) and four sudden deaths. Possible founder effects regarding four KCNQ1 mutations; p.Y111C (8%), p.R518X (50%), c.572_576del (17%) and p.Q530X (8%) together explained 83% of the JLNS mutation-spectrum in Sweden, consisting of 8 KCNQ1 mutations. Conclusion: The high prevalence of p.Y111C- and p.R518X-related LQTS as well as JLNS revealed in Sweden could be explained by the combination of mild clinical phenotypes in heterozygotes and strong founder effects present during the population development of northern Sweden. Increased knowledge regarding the occurrence of LQTS and JLNS as well as mutation- and/or genotype-specific data constitute prerequisites for possible improvement of patient management.
5
Matzke, Nicholas J. "Probabilistic Historical Biogeography| New Models for Founder-Event Speciation, Imperfect Detection, and Fossils Allow Improved Accuracy and Model-Testing." Thesis, University of California, Berkeley, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3616487.
Full textAbstract:
<p> Historical biogeography has a diversity of methods for inferring ancestral geographic ranges on phylogenies, but many of the methods have conflicting assumptions, and there is no common statistical framework by which to judge which models are preferable. Probabilistic modeling of geographic range evolution, pioneered by Ree and Smith (2008, <i>Systematic Biology</i>) in their program LAGRANGE, could provide such a framework, but this potential has not been implemented until now. </p><p> I have created an R package, "BioGeoBEARS," described in chapter 1 of the dissertation, that implements in a likelihood framework several commonly used models, such as the LAGRANGE Dispersal-Extinction-Cladogenesis (DEC) model and the Dispersal-Vicariance Analysis (DIVA, Ronquist 1997, <i> Systematic Biology</i>) model. Standard DEC is a model with two free parameters specifying the rate of "dispersal" (range expansion) and "extinction" (range contraction). However, while dispersal and extinction rates are free parameters, the cladogenesis model is fixed, such that the geographic range of the ancestral lineage is inherited by the two daughter lineages through a variety of scenarios fixed to have equal probability. This fixed nature of the cladogenesis model means that it has been indiscriminately applied in all DEC analyses, and has not been subjected to any inference or formal model testing. </p><p> BioGeoBEARS also adds a number of features not previously available in most historical biogeography software, such as distance-based dispersal, a model of imperfect detection, and the ability to include fossils either as ancestors or tips on a time-calibrated tree. </p><p> Several important conclusions may be drawn from this research. First, formal model selection procedures can be applied in phylogenetic inferences of historical biogeography, and the relative importance of different processes can be measured. These techniques have great potential for strengthening quantitative inference in historical biogeography. No longer are biogeographers forced to simply assume, consciously or not, that some processes (such as vicariance or dispersal) are important and others are not; instead, this can be inferred from the data. Second, founder-event speciation appears to be a crucial explanatory process in most clades, the only exception being some intracontinental taxa showing a large degree of sympatry across widespread ranges. This is not the same thing as claiming that founder-event speciation is the <i>only</i> important process; founder event speciation as the only important process is inferred in only one case (<i>Microlophus</i> lava lizards from the Galapagos). The importance of founder-event speciation will not be surprising to most island biogeographers. However, the results are important nonetheless, as there are still some vocal advocates of vicariance-dominated approaches to biogeography, such as Heads (2012, <i>Molecular Panbiogeography of the Tropics</i>), who allows vicariance and range-expansion to play a role in his historical inferences, but explicitly excludes founder-event speciation <i> a priori.</i> The commonly-used LAGRANGE DEC and DIVA programs actually make assumptions very similar to those of Heads, even though many users of these programs likely consider themselves dispersalists or pluralists. Finally, the inclusion of fossils and imperfect detection within the same likelihood and model-choice framework clears the path for integrating paleobiogeography and neontological biogeography, strengthening inference in both. </p><p> Model choice is now standard practice in phylogenetic analysis of DNA sequences: a program such as ModelTest is used to compare models such as Jukes-Cantor, HKY, GTR+I+G, and to select the best model before inferring phylogenies or ancestral states. It is clear that the same should now happen in phylogenetic biogeography. BioGeoBEARS enables this procedure. Perhaps more importantly, however, is the potential for users to create and test new models. Probabilistic modeling of geographic range evolution on phylogenies is still in its infancy, and undoubtedly there are better models out there, waiting to be discovered. It is also undoubtedly true that different clades and different regions will favor different processes, and that further improvements will be had by linking the evolution of organismal traits (e.g., loss of flight) with the evolution of geographic range, within a common inference framework. In a world of rapid climate change and habitat loss, biogeographical methods must maximize both flexibility and statistical rigor if they are to play a role. This research takes several steps in that direction. </p><p> BioGeoBEARS is open-source and is freely available at the Comprehensive R Archive Network (http://cran.r-project.org/web/packages/BioGeoBEARS/index.html). A step-by-step tutorial, using the <i>Psychotria</i> dataset, is available at PhyloWiki (http://phylo.wikidot.com/biogeobears). </p><p> (Abstract shortened by UMI.)</p>
6
Borgehammar, Stephan. "How the Holy Cross was found : from event to medieval legend : with an appendix of texts /." Stockholm : Almqvist & Wiksell International, 1991. http://bibpurl.oclc.org/web/33238.
Full text
7
Nilsson, Emil. "Breeding System Evolution and Pollination Success in the Wind-Pollinated Herb Plantago maritima." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4790.
Full text
8
Andersson, Bea Angelica. "Analysis of Selection and Genetic Drift in a Dioecious Plant : Spatial Genetic Structure and Selection in Phenotypic Traits in a Young Island Population of Silene dioica." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-96275.
Full textAbstract:
Selection and genetic drift are often competing forces in shaping genetic structure in populations. Genetic drift will often effectively cancel out the effect of selection when population sizes are small, such as in colonizing island populations. On a small island in the Skeppsvik Archipelago in northern Sweden, a newly founded population of Silene dioica has been monitored since it first established around 1993. Though inhabiting an area of merely 173 m2, the population has been shown to exhibit a genetically differentiated patch structure where closely related individuals are tightly grouped, distanced from other family groups. In this study, the effect of selection was evaluated as compared to that of genetic drift. Variation in phenotypic traits in flowers, leaves and stalks were compared to that of neutral markers, in the form of PST and FST measures, to assess a measure of what proportion of differentiation among patches in phenotypic traits could not be attributed to genetic drift. Males and females were analysed separately to obtain measures of sex specific selection. Signs of divergent and stabilizing selection were found in several traits in both males and females despite the small spatial scale and short time since colonization. Further analysis is needed to assess explanations for trait divergence among patches and direction of selection.
9
Benvenuti, Sherilyn R. "St. Luke's language of mission a statistical comparative and definitional analysis of Luke's use of words for speaking events found in the book of Acts /." Theological Research Exchange Network (TREN), 1992. http://www.tren.com.
Full text
10
Savage, Rebecca. "Towards the ethnography of filmic places : video-based research and found footage filmmaking in the anthropological investigation of Mexican migrant event video." Thesis, University of Westminster, 2012. https://westminsterresearch.westminster.ac.uk/item/8z905/towards-the-ethnography-of-filmic-places-video-based-research-and-found-footage-filmmaking-in-the-anthropological-investigation-of-mexican-migrant-event-video.
Full textAbstract:
This thesis offers an ethnography, with both audiovisual and written components, of the virtual places brought into being through the creation and consumption of event videos in a transnational community. It is intended as a contribution to the development of conceptual and methodological frameworks, which will allow anthropological engagements with vernacular audiovisual media that take into account their phenomenological properties as mimetically active assemblages. In San Francisco Tetlanohcan, Mexico, young parents often leave their children behind as they cross the border illegally, heading north to look for work. Event videos, made by videographers at rite of passage ceremonies and sent to the USA, are an important aspect of migrant life. This research draws on thinking in philosophy and film studies to conceptualise these videos as agents in a process of ‘filmic emplacement’ as their production and consumption bring into being imagined places and selves. The project combines methodological approaches borrowed from sensory ethnography with video editing techniques inspired by avant-garde filmmaking, in a dynamic evocation and exploration of these filmic places. Close participation in the creation and consumption of event videos combined with the movement of alternative ‘video messages’ across the border, gave the researcher a sense of these places. Shared screenings of found footage sequences materialised and refined that understanding. By co-opting the aesthetics of popular television, event videos transform that which they depict, bringing into being collectively created and experienced imagined places. This coherent and constant virtual realm allows for the creation and maintenance of kinship and fictive kinship relationships, despite separations over space and time. The video 900,000 Frames Between Us produced as part of this thesis uses the juxtaposition of ontologically diverse images and sounds to provide an audiovisual evocation of this ‘filmic home’. In addition to contributing to the anthropological understanding of San Francisco, this thesis suggests ways in which visual anthropologists might engage with and understand the mediated experiences of others.
Books on the topic "Founder events"
1
O'Brien, C. A. E. The genius of the few: The story of those who founded the Garden in Eden. Turnstone Press, 1985.
Find full text
2
O'Brien, C. A. E. The genius of the few: The story of those who founded the Garden of Eden. Borgo Press, 1988.
Find full text
3
The founders and rulers of united Israel: From the death of Moses to the division of the Hebrew kingdom. Charles Scribner, 1988.
Find full text
6
Gagliardi, Isabella, ed. Le vestigia dei gesuati. Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-228-7.
Full textAbstract:
The book analyses the history of the Jesuat congregation, highlighting the elements of connection and comparison with the social contexts, then describing the origin and the most ancient events of the female branch of the congregation, and the memory of the meeting between the "founder" of the Jesuats and the "foundress" of the Gesuate. The iconographic memory of the initiator of the congregation, Giovani Colombini, the collection of the lauds of the Jesuat Bianco da Siena, and the fortune of the 15th-century Life of Giovanni Colombini, written by Feo Belcari, are also investigated. Then the research reconstructs the constellation of groups, religious experiments and bearers of ideas and devotions that were linked to the Jesuats and, in particular, to the convents of Milan, Siena, Lucca, Venice and Rome and the sanctuaries managed by the congregation. The congregational sociability is analysed along its lines: the practice of work as pharmacists and the cultivation of spiritual friendships with prominent people such as the Countess of Guastalla, Lodovica Torelli. Finally, the erudite use of Colombini's Epistolario as a language text is studied. The volume closes with a documentary appendix on the Jesuat convent of Chiusi.
7
How the Holy Cross was found: From event to medieval legend with an appendix of texts. Almqvist & Wiksell International, 1991.
Find full text
8
1907-, Magill Frank Northen, ed. Magill index to Great lives from history: With additional citations for the "principal personages" found in Great events from history : cumulative indexes, 1972-1990. Salem Press, 1991.
Find full text
9
Autocenter: Space for contemporary art Berlin : this publication ... documents the first 13 years of exhibitions and events at Autocenter, founded by the two artists in 2001 in a former car mechanic's garage. Distanz, 2014.
Find full text
10
The cliff walk: A memoir of a job lost and a life found. Little, Brown and Co., 1997.
Find full textBook chapters on the topic "Founder events"
1
Ringo, J. M. "The Effect of Successive Founder Events on Mating Propensity of Drosophila." In Evolutionary Genetics of Invertebrate Behavior. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-3487-1_8.
Full text
2
Giacomucci, Scott. "History of Sociometry, Psychodrama, Group Psychotherapy, and Jacob L. Moreno." In Social Work, Sociometry, and Psychodrama. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6342-7_3.
Full textAbstract:
AbstractThis chapter presents the histories of sociometry, psychodrama, and group psychotherapy while also outlining the history of Jacob L. Moreno, their founder. Major events from Moreno’s life are covered as they relate to the development of his philosophy and the practice of his triadic system, sociometry, psychodrama, and group psychotherapy. The popularity and decline of Moreno’s methods throughout their history are highlighted while offering insights into these historical trends in the USA and globally. Connections are drawn between Moreno’s history and the history of social work while also framing him as a social worker due to the nature of his philosophy, theory, and practice. A comprehensive timeline is offered which depicts the parallel timelines of psychodrama, social work, group therapy, psychology, and society.
3
Cleland Silva, Tricia, and Paulo de Tarso Fonseca Silva. "Approaching Work Stories with a Craft Mindset." In Making Sense of Work Through Collaborative Storytelling. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-89446-7_7.
Full textAbstract:
AbstractThis chapter starts with a metaphorical story called “Building a Health Village.” The story was created by the first author and is based on empirical data collected between 2018 and 2019. The data was acquired through formal interviews and two Collaborative Story Craft workshops with health care practitioners and other stakeholders co-creating a digital service platform. The story also draws from informal conversations told to the first author over a period of 15 years in a Nordic welfare state. During this time, she has navigated various social worlds as an immigrant, student, cleaner, teacher, academic researcher, business co-founder, and parent. Both authors applied their work as craft mindset to build questions for those interpreting the story.The aim of the chapter is to emphasise that stories and narrations change and transform as individuals continuously make sense of their social and material surroundings. Stories are also free floating as they narrate events to different audiences. Like sensemaking and craftwork, narrating and telling stories to make sense of embodied lived experiences never ends or stops cleanly. Rather, stories enter new cycles of purpose and possibilities from different positions, depending on the context and the audience.
4
Björnsdóttir, Sigríður. "Welfare assessment of Icelandic competition horses." In Humans, horses and events management. CABI, 2021. http://dx.doi.org/10.1079/9781789242751.0116.
Full textAbstract:
Abstract Veterinary examination of Icelandic competition horses, according to a specially designed protocol 'fit for competition', is performed prior to every entrance to the track during Landsmót, the National Championships of the Icelandic horse. This has provided valuable data for welfare assessment that have been used for improvement of general rules for the benefit of competition horses. It further prevents suffering on an individual level as horses expressing pain during the examination are found not to be fit for competition and are not allowed to start or continue competition during the event. The frequency of bit-related lesions can be regarded as a welfare indicator for Icelandic competition horses, reflecting the pressure placed on the mouth of the horse.
5
Stefánsdóttir, Guðrún Jóhanna, and Víkingur Gunnarss Gunnarsson. "The star of the show: the Icelandic horse." In Humans, horses and events management. CABI, 2021. http://dx.doi.org/10.1079/9781789242751.0026.
Full textAbstract:
Abstract The Icelandic horse is one of the purest horse breeds in the world, reaching an average 140 cm (13.3 hh) height at the withers and weighing 340 kg. The conformation is rectangular and compact, with a sloping croup, and a long, thick mane and tail. The breed is most known and appreciated for the lateral gaits tölt and pace, which it has in addition to the basic gaits (walk, trot and canter/gallop). The breed is found in more than 30 countries, with more Icelandic horses abroad (ca. 175,000) than in Iceland (ca. 65,000). There is one international studbook, WorldFengur, with breeding associations in 21 countries and a common breed evaluation system. Following mechanization in Iceland around 1950, the role of the Icelandic horse changed from being 'the most useful servant' to that of a leisure and sport horse. Also in 1950, Landsmót - the largest outdoor sporting event for the Icelandic horse in Iceland - was held for the first time. It was then repeated every four years until 1998 and biennially after that. Landsmót has been held 23 times in total, at seven different locations in the south and north of Iceland, lasting for 3-8 days in the high summer period. The event has expanded over time with an increasing number of horses, riders and competition disciplines. This chapter introduces the disciplines, qualification of horses and riders and facilities required for Landsmót.
6
Rodkin, M. V. "Patterns of Seismicity Found in the Generalized Vicinity of a Strong Earthquake: Agreement With Common Scenarios of Instability Development." In Extreme Events and Natural Hazards: The Complexity Perspective. American Geophysical Union, 2012. http://dx.doi.org/10.1029/2011gm001060.
Full text
7
Briguglio, Lino, and Marie Avellino. "Assessing Malta's overtourism." In Managing events, festivals and the visitor economy: concepts, collaborations and cases. CABI, 2021. http://dx.doi.org/10.1079/9781789242843.00010.
Full textAbstract:
Abstract The aim of this chapter is twofold, namely (i) to present a literature review on the upsides and downsides of tourism and its relevance to sustainable development in the context of overtourism; and (ii) to report on the results of a perception survey relating to the attitudes towards tourism in Malta, so as to consider whether Malta has reached the stage of 'overtourism'. The reason a perceptions survey approach was found appropriate for this chapter is that the exact point where overtourism sets in is difficult to measure objectively, for various reasons including that this possibility is not something static, has various dimensions, depends on the good or bad behaviour of the visitors, and varies according to the social and environmental policies and practices in the host destination.
8
Ulfsnes, Rasmus, Viktoria Stray, Nils Brede Moe, and Darja Šmite. "Innovation in Large-Scale Agile - Benefits and Challenges of Hackathons When Hacking from Home." In Agile Processes in Software Engineering and Extreme Programming – Workshops. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-88583-0_3.
Full textAbstract:
AbstractHackathons are events in which diverse teams work together to explore and develop solutions, software, or even ideas. Hackathons have been recognized not only as public events for hacking but also as a corporate mechanism for innovation. Hackathons are a way for established large-scale agile organizations to achieve increased employee wellbeing as well as being a curator for innovation and developing new products. The sudden transition to the work-from-home mode caused by the COVID-19 pandemic first put many corporate events requiring collocation, such as hackathons, temporarily on hold and then motivated companies to find ways to hold these events virtually. In this paper, we report our findings from investigating hackathons in the context of a large agile company by first exploring the general benefits and challenges of hackathons and then trying to understand how they were affected by the virtual setup. We conducted nine interviews, surveyed 23 employees, and analyzed a hackathon demo. We found that hackathons provide both individual and organizational benefits of innovation, personal interests, and acquiring new skills and competencies. However, several challenges such as added stress due to stopping the regular work, employees fearing not having enough contribution to deliver, and potential mismatch between individual and organizational goals were also found. With respect to the virtual setup, we found that virtual hackathons are not diminishing the innovation benefits. However, some negative effects surfaced on the social and networking side.
9
Reames, Donald V. "A Turbulent History." In Solar Energetic Particles. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66402-2_2.
Full textAbstract:
AbstractLarge solar energetic-particle (SEP) events are clearly associated in time with eruptive phenomena on the Sun, but how? When large SEP events were first observed, flares were the only visible candidate, and diffusion theory was stretched to explain how the particles could spread through space, as widely as observed. The observation of coronal mass ejections (CMEs), and the wide, fast shock waves they can drive, provided better candidates later. Then small events were found with 1000-fold enhancements in 3He/4He that required a different kind of source—should we reconsider flares, or their open-field cousins, solar jets? The 3He-rich events were soon associated with the electron beams that produce type III radio bursts. It seems the radio astronomers knew of both SEP sources all along. Sometimes the distinction between the sources is blurred when shocks reaccelerate residual 3He-rich impulsive suprathermal ions. Eventually, however, we would even begin to measure the source-plasma temperature that helps to better distinguish the SEP sources.
10
Yamakoshi, Kazuo, Ken’ichi Nogami, Rie Omori, Ma Jianguo, and Ma Shulan. "A Cosmic Matter Accretion Event Around 660,000 Years Before Present Found in Two Dated, Central Pacific Cores." In Origin and Evolution of Interplanetary Dust. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3640-2_11.
Full textConference papers on the topic "Founder events"
1
Polak, Yuri Еvgenievich. "The first Internet typographers (to 50th anniversary of the oldest electronic library)." In 23rd Scientific Conference “Scientific Services & Internet – 2021”. Keldysh Institute of Applied Mathematics, 2021. http://dx.doi.org/10.20948/abrau-2021-10.
Full textAbstract:
In 2021, a number of memorable events are celebrated: 50th anniversary of Project Gutenberg (the first digital library); 10 years since the death of its founder, Michael Hart; 55th birthday of the creator of the famous Russian digital library Maxim Moshkov. This paper is an attempt to show the significance of these events for Internet and its users. Special attention is paid to the issues of copyright duration legislation. This has become one of the main obstacles in the activities of the mentioned digital libraries.
2
Repisky, Máté, Éva Málovics, and Gergely Farkas. "Successes and failures in Hungarian family businesses." In The Challenges of Analyzing Social and Economic Processes in the 21st Century. Szegedi Tudományegyetem Gazdaságtudományi Kar, 2020. http://dx.doi.org/10.14232/casep21c.11.
Full textAbstract:
Family business researchers widely investigated the loss or the threatened loss of socioemotional wealth. Another growing theme within entrepreneurship is the consequences of business failures affecting entrepreneurs. However, these two fields rarely overlapped. The aim of this study was to explore different challenging events’ effects on the family entrepreneurs and to identify the factors that can determine the successfulness of the coping strategies. In this study, we present three case studies about family enterprises, which went through a challenging period and balanced between failure and success. In two cases the main challenges rooted in familiness of the enterprises and in the third case the challenge came from external regulatory change. The two inner challenges were generated by the retirement of the founder and the divorce between the two owners. We could observe both successful and partially successful coping strategies, but the common point was that all of them were strongly rooted in the socio-emotional wealth of family businesses.
3
Grados, Barbara. "Abandoned, lost or otherwise discarded fishing gear found in trawling at Tropical Sea of Grau Piura- Peru." In The 3rd Global Virtual Conference of the Youth Environmental Alliance in Higher Education. Michigan Technological University, 2021. http://dx.doi.org/10.37099/mtu.dc.yeah-conference/april2021/all-events/27.
Full text
4
Block, J., T. Tyrberg, and P. Souderholm. "No fault found events during the operational life of military aircraft items." In 2009 8th International Conference on Reliability, Maintainability and Safety (ICRMS 2009). IEEE, 2009. http://dx.doi.org/10.1109/icrms.2009.5269968.
Full text
5
Prewitt, T. J., and Michael Bednorz. "Diagnosis, Modelling and Assessment of Transient Pressure Events Based on Observed In-Field Evidence." In ASME 2022 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/pvp2022-85658.
Full textAbstract:
Abstract Intermittent pipe movement due to transient pressure events including vapor column collapse or water hammer events can impart large strains into the pipe, cause damage to the support structure, damage coatings, and cause damage or failure of the pipe. This paper will present a method that has been used with success for determining the pipe stresses and strains and possible cause associated with a transient pressure event based on coating damage evidence gathered from in-field assessments. After constructing a hydraulic model of the piping system, various transient events were modelled to obtain resulting pressure over the transient event’s period at key points along the piping system, such as valves and elbows. A second, more refined finite element model was created to incorporate the pressure values to determine the resulting displacements and stresses to relate to the in-field measurements of the region in question. By comparing the displacements in the model to the field evidence, the models were calibrated, and evaluation of the likely cause of coating damage found in the field was able to be performed. Moreover, the stresses in the pipe during the event are able to be assessed which allows for damage assessments to be conducted and allows for corrective actions to take place. Transient events assessed ranged from valve openings and closures, pump start up, and vapor column collapse.
6
Horlenko, Valentyna. "The impact of remote work on the mental health of teachers." In National Events on WMHD in Ukraine. N-DSA-N, 2021. http://dx.doi.org/10.32437/nmhdup2021.2.
Full textAbstract:
The paper highlights the results of a study of complications in the professional activities of teachers and their emotional state. Showing the analysis of the problem of complications in the execution of teachers' professional duties in the conditions of remote work and as a consequence - degradation of the emotional state, which is manifested in negative psychological symptoms. As a result of theoretical analysis, it was found that in different countries, studies of the emotional states of teachers during the COVID-19 pandemic are being conducted. To find out the complications in the professional activities and emotional state of teachers associated with the transition to distance learning in connection with quarantine, an online survey of teachers was conducted using the questionnaire "Identification of socio-psychological problems caused by the pandemic COVID-19 in the activities of educational institutions" developed by Panko V.H. Respondents were asked to assess the presence of the problem by scale where "0" - no presence; 1 - minimum presence; 10 - maximum presence. It was found that more than half of respondents (N = 3209) have difficulties in carrying out professional activities in the conditions of remote work (inability to perform the full range of planned tasks and professional responsibilities; insufficient competence in ICT; difficulties with organizing time; disorders in communication between teachers and parents to control the quality of students' knowledge; difficulties with involving children in distance learning; complications with student discipline). As a result, respondents experience emotional exhaustion, decreased emotional balance and excessive fatigue. The results of the study confirmed the need for professional development and psychological assistance to teachers. The ways of psychological support of the educational process are outlined. Keywords. remote work, emotional state, teacher, pandemic COVID-19
7
Ilarslan, Mustafa, and Louis Y. Ungar. "Mitigating the Impact of False Alarms and No Fault Found events in military systems." In 2015 IEEE AUTOTESTCON. IEEE, 2015. http://dx.doi.org/10.1109/autest.2015.7356464.
Full text
8
Ilarslan, Mustafa, Louis Y. Ungar, and Kenan Ilarslan. "An economic analysis of false alarms and no fault found events in air vehicles." In 2016 IEEE AUTOTESTCON. IEEE, 2016. http://dx.doi.org/10.1109/autest.2016.7589571.
Full text
9
Solding, Petter, and Patrik Thollander. "Increased Energy Efficiency in a Swedish Iron Foundry Through Use of Discrete Event Simulation." In 2006 Winter Simulation Conference. IEEE, 2006. http://dx.doi.org/10.1109/wsc.2006.322982.
Full text
10
Panok, Vitalii, and Iryna Tkachuk. "Social-Psychological problems of pedagogues in conditions pandemic of COVID-19." In National Events on WMHD in Ukraine. N-DSA-N, 2021. http://dx.doi.org/10.32437/nmhdup2021.4.
Full textAbstract:
Introduction. The COVID-19 pandemic may have hit the education industry the hardest, but the socio-psychological effects of quarantine are still poorly understood. A group of scientists from the Ukrainian SMC of practical psychology and social work of the NAES of Ukraine has conducted a study of the socio-psychological problems that have arisen for teaching staff of general secondary education establishments in the context of the pandemic. Purpose. The research was carried out during the implementation of the scientific topic «Overcoming the consequences of the COVID-19 pandemic in the activities of the psychological service of the educational system» on the order of the National Research Fund of Ukraine. Design\approach\methodology. The study was conducted by interviewing educators through Google forms. Most of the questions contained a 10-step scale. In processing the data, all respondents’ answers were grouped into 5 categories: "yes", "more likely to", "more likely not", "no", "don’t know/it’s hard to say". The survey was attended by 3,209 teaching staff from general secondary education institutions from all regions of Ukraine, 45% from urban areas, 55% from rural areas; among which 92% were women and 8% were men. Results. Among the results, researchers highlighted the difficulties and fears of educators caused by the pandemic. The fears and complexities of the profession were distributed as follows. 1. The fear of getting infected (infecting family members) is common to 78.2% of the surveyed. 40.9% of the interviewed felt this fear to the greatest extent. However, 9.3% found those fears irrelevant. 2. Problems associated with the use of ICT in educational activities (lack of competence) — 53.2%. Among those, 22.2% have major difficulties and 31% have minor difficulties. Only 15.7% consider themselves fully competent. 3. 73% of educators noted difficulties in involving children in distance learning. This was the main problem for 12.8% of respondents. 4. «It is difficult to adhere to all anti-epidemic requirements in an educational institution to protect students» — 69.5% stated that this is one of the most significant problems of professional activity. 5. Emotional exhaustion, loss of emotional balance, excessive fatigue. 58.7% said that the problem was significant, of which almost 18% said it was very significant. 6. 51.1% of respondents indicated that they were unable to communicate with students' parents regarding monitoring the quality of their students' knowledge. Of these, 8.7% rated it with the highest score. 7. Health related difficulties (consequential of COVID-19). 31.2% of educators consider this problem to be relevant, while 8.9% rated it as very relevant. 30.4% of those interviewed denied the existence of such a problem. Conclusions Taking into account the results of the study, the most relevant areas in the work of the psychologists in the educational system are the following: ● prevention among educators and students of the COVID-bullying; ● working with negative emotional states of participants in the educational process and increasing their stress tolerance; ● providing socio-educational assistance to children and families in difficult life situations, and forming positive life prospects. Keywords. COVID-19 pandemic; pedagogues; social-psychological problems; fear of getting infected; emotional exhaustion
Reports on the topic "Founder events"
1
Perdigão, Rui A. P., and Julia Hall. Spatiotemporal Causality and Predictability Beyond Recurrence Collapse in Complex Coevolutionary Systems. Meteoceanics, 2020. http://dx.doi.org/10.46337/201111.
Full textAbstract:
Causality and Predictability of Complex Systems pose fundamental challenges even under well-defined structural stochastic-dynamic conditions where the laws of motion and system symmetries are known. However, the edifice of complexity can be profoundly transformed by structural-functional coevolution and non-recurrent elusive mechanisms changing the very same invariants of motion that had been taken for granted. This leads to recurrence collapse and memory loss, precluding the ability of traditional stochastic-dynamic and information-theoretic metrics to provide reliable information about the non-recurrent emergence of fundamental new properties absent from the a priori kinematic geometric and statistical features. Unveiling causal mechanisms and eliciting system dynamic predictability under such challenging conditions is not only a fundamental problem in mathematical and statistical physics, but also one of critical importance to dynamic modelling, risk assessment and decision support e.g. regarding non-recurrent critical transitions and extreme events. In order to address these challenges, generalized metrics in non-ergodic information physics are hereby introduced for unveiling elusive dynamics, causality and predictability of complex dynamical systems undergoing far-from-equilibrium structural-functional coevolution. With these methodological developments at hand, hidden dynamic information is hereby brought out and explicitly quantified even beyond post-critical regime collapse, long after statistical information is lost. The added causal insights and operational predictive value are further highlighted by evaluating the new information metrics among statistically independent variables, where traditional techniques therefore find no information links. Notwithstanding the factorability of the distributions associated to the aforementioned independent variables, synergistic and redundant information are found to emerge from microphysical, event-scale codependencies in far-from-equilibrium nonlinear statistical mechanics. The findings are illustrated to shed light onto fundamental causal mechanisms and unveil elusive dynamic predictability of non-recurrent critical transitions and extreme events across multiscale hydro-climatic problems.
2
Downing, W. Logan, Howell Li, William T. Morgan, Cassandra McKee, and Darcy M. Bullock. Using Probe Data Analytics for Assessing Freeway Speed Reductions during Rain Events. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317350.
Full textAbstract:
Rain impacts roadways such as wet pavement, standing water, decreased visibility, and wind gusts and can lead to hazardous driving conditions. This study investigates the use of high fidelity Doppler data at 1 km spatial and 2-minute temporal resolution in combination with commercial probe speed data on freeways. Segment-based space-mean speeds were used and drops in speeds during rainfall events of 5.5 mm/hour or greater over a one-month period on a section of four to six-lane interstate were assessed. Speed reductions were evaluated as a time series over a 1-hour window with the rain data. Three interpolation methods for estimating rainfall rates were tested and seven metrics were developed for the analysis. The study found sharp drops in speed of more than 40 mph occurred at estimated rainfall rates of 30 mm/hour or greater, but the drops did not become more severe beyond this threshold. The average time of first detected rainfall to impacting speeds was 17 minutes. The bilinear method detected the greatest number of events during the 1-month period, with the most conservative rate of predicted rainfall. The range of rainfall intensities were estimated between 7.5 to 106 mm/hour for the 39 events. This range was much greater than the heavy rainfall categorization at 16 mm/hour in previous studies reported in the literature. The bilinear interpolation method for Doppler data is recommended because it detected the greatest number of events and had the longest rain duration and lowest estimated maximum rainfall out of three methods tested, suggesting the method balanced awareness of the weather conditions around the roadway with isolated, localized rain intensities.
3
Gidengil, Courtney, Matthew Bidwell Goetz, Margaret Maglione, et al. Safety of Vaccines Used for Routine Immunization in the United States: An Update. Agency for Healthcare Research and Quality (AHRQ), 2021. http://dx.doi.org/10.23970/ahrqepccer244.
Full textAbstract:
Objective. To conduct a systematic review of the literature on the safety of vaccines recommended for routine immunization in the United States, updating the 2014 Agency for Healthcare Research and Quality (AHRQ) report on the topic. Data sources. We searched MEDLINE®, Embase®, CINAHL®, Cochrane CENTRAL, Web of Science, and Scopus through November 9, 2020, building on the prior 2014 report; reviewed existing reviews, trial registries, and supplemental material submitted to AHRQ; and consulted with experts. Review methods. This report addressed three Key Questions (KQs) on the safety of vaccines currently in use in the United States and included in the Centers for Disease Control and Prevention’s (CDC) recommended immunization schedules for adults (KQ1), children and adolescents (KQ2), and pregnant women (KQ3). The systematic review was supported by a Technical Expert Panel that identified key adverse events of particular concern. Two reviewers independently screened publications; data were extracted by an experienced subject matter expert. Studies of vaccines that used a comparator and reported the presence or absence of adverse events were eligible. We documented observed rates and assessed the relative risks for key adverse events. We assessed the strength of evidence (SoE) across the existing findings from the prior 2014 report and the new evidence from this update. The systematic review is registered in PROSPERO (CRD42020180089). Results. A large body of evidence is available to evaluate adverse events following vaccination. Of 56,608 reviewed citations, 189 studies met inclusion criteria for this update, adding to data in the prior 2014 report, for a total of 338 included studies reported in 518 publications. Regarding vaccines recommended for adults (KQ1), we found either no new evidence of increased risk for key adverse events with varied SoE or insufficient evidence in this update, including for newer vaccines such as recombinant influenza vaccine, adjuvanted inactivated influenza vaccine, and recombinant adjuvanted zoster vaccine. The prior 2014 report noted a signal for anaphylaxis for hepatitis B vaccines in adults with yeast allergy and for tetanus, diphtheria, and acellular pertussis vaccines. Regarding vaccines recommended for children and adolescents (KQ2), we found either no new evidence of increased risk for key adverse events with varied SoE or insufficient evidence, including for newer vaccines such as 9-valent human papillomavirus vaccine and meningococcal B vaccine. The prior 2014 report noted signals for rare adverse events—such as anaphylaxis, idiopathic thrombocytopenic purpura, and febrile seizures—with some childhood vaccines. Regarding vaccines recommended for pregnant women (KQ3), we found no evidence of increased risk for key adverse events with varied SoE among either pregnant women or their infants following administration of tetanus, diphtheria, and acellular pertussis vaccines during pregnancy. Conclusion. Across this large body of research, we found no new evidence of increased risk since the prior 2014 report for key adverse events following administration of vaccines that are routinely recommended. Signals from the prior report remain unchanged for rare adverse events, which include anaphylaxis in adults and children, and febrile seizures and idiopathic thrombocytopenic purpura in children. There is no evidence of increased risk of adverse events for vaccines currently recommended in pregnant women. There remains insufficient evidence to draw conclusions about some rare potential adverse events.
4
Wilson, D., Michael Shaw, Vladimir Ostashev, et al. Numerical modeling of mesoscale infrasound propagation in the Arctic. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45788.
Full textAbstract:
The impacts of characteristic weather events and seasonal patterns on infrasound propagation in the Arctic region are simulated numerically. The methodology utilizes wide-angle parabolic equation methods for a windy atmosphere with inputs provided by radiosonde observations and a high-resolution reanalysis of Arctic weather. The calculations involve horizontal distances up to 200 km for which interactions with the troposphere and lower stratosphere dominate. Among the events examined are two sudden stratospheric warmings, which are found to weaken upward refraction by temperature gradients while creating strongly asymmetric refraction from disturbances to the circumpolar winds. Also examined are polar low events, which are found to enhance negative temperature gradients in the troposphere and thus lead to strong upward refraction. Smaller-scale and topographically driven phenomena, such as low-level jets, katabatic winds, and surface-based temperature inversions, are found to create frequent surface-based ducting out to 100 km. The simulations suggest that horizontal variations in the atmospheric profiles, in response to changing topography and surface property transitions, such as ice boundaries, play an important role in the propagation.
5
Gallagher, Alex, Sandra LeGrand, Taylor Hodgdon, and Theodore Letcher. Simulating environmental conditions for Southwest United States convective dust storms using the Weather Research and Forecasting Model v4.1. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/44963.
Full textAbstract:
Dust aerosols can pose a significant detriment to public health, transportation, and tactical operations through reductions in air quality and visibility. Thus, accurate model forecasts of dust emission and transport are essential to decision makers. While a large number of studies have advanced the understanding and predictability of dust storms, the majority of existing literature considers dust production and forcing conditions of the underlying meteorology independently of each other. Our study works to-wards filling this research gap by inventorying dust-event case studies forced by convective activity in the Desert Southwest United States, simulating select representative case studies using several configurations of the Weather Research and Forecasting (WRF) model, testing the sensitivity of forecasts to essential model parameters, and assessing overall forecast skill using variables essential to dust production and transport. We found our control configuration captured the initiation, evolution, and storm structure of a variety of convective features admirably well. Peak wind speeds were well represented, but we found that simulated events arrived up to 2 hours earlier or later than observed. Our results show that convective storms are highly sensitive to initialization time and initial conditions that can preemptively dry the atmosphere and suppress the growth of convective storms.
6
Philosoph-Hadas, Sonia, Richard Crain, Shimon Meir, Nehemia Aharoni, and Susan Lurie. Calcium-Mediated Signal Transduction during Leaf Senescence. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604925.bard.
Full textAbstract:
We have examined the possibility that modulation of [Ca2+]cyt may represent a signal which induces senescence processes in leaves, through triggering of lipid hydrolysis leading to the cascade of detriorative events. Characterization of the signal transduction components operating during leaf senescence was gained by studying various Ca2+-dependent activities of parsley and chrysanthemum leaves, in relation to several senescence functions, and in response to senescence-modulating hormones (ethylene,ABA, BA and IAA). Some innovative findings regarding the control of senescence processes by [Ca2+]cyt were established: Several Ca2+-or CaM-related compounds were shown to modulate [Ca2+]cyt and action, thereby affecting whole leaf senescence. The involvement of [Ca2+]cyt in mediating the effects of senescence-modulating hormones has been demonstrated. Loss of energized Ca2+-transport capability of PM was found to an early event in leaf senescence, which occurs before changes in senescence parameters are observed, and while other PM ATPase enzymes still retain about 50% of their activities. A general pattern of increased phosphorylation of PM proteins with advanced senescence, which could be modified by plant hormones applied in vivo (BA) or in vitro (ABA), sa found. Taken together, all this indirect evidence indicate that [Ca2+]cyt is elevated due to the senescence-induced decrease in the ability to extrude Ca2+, which results particularly from reduced PM Ca2++-transport capability rather than increased operation of Ca2+ channels or elevated Ins(1,4,5)P3 levels. The direct proof for such a senescence-related elevation in [Ca2+]cyt was provided for the first time by the Ca2+ imaging measures with fura-2, showing a rise in [Ca2+]cyt of mesophyll cells upon senescence induction, which preceeded changes in typical senescence characteristics. This research provides strong evidence for regarding the rise in [Ca2+]cyt as a primary event in induction of the senescence syndrome in detached leaves. The findings have also broad implications for postharvest handling of leafy crops and ornamentals, and open new avenues for employing Ca2+-related inhibitors to delay leaf senescence.
7
LI, Peng, Junhong Ren, and Yan Li. Lung ultrasound guided therapy for heart failure: an updated meta-analyses and trial sequential analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2022. http://dx.doi.org/10.37766/inplasy2022.2.0124.
Full textAbstract:
Review question / Objective: We aim to evaluate the effect of lung ultrasound (LU) guided therapy on the rates of adverse cardiac events (MACE) in heart failure (HF) patients. Condition being studied: Previous studies have found that B-lines assessed by lung ultrasound can be used for risk stratification in patients with HF and to predict the occurrence of adverse cardiac events. Therefore, similar to BNP, lung ultrasound has clinical value in guiding the management of patients with HF. However, the role of LU in guiding HF therapy is still controversial. Moreover, previous study's samples are too small to explain the over clinical outcomes. Besides, previous meta-analyses study did not perform meta-regression and/or subgroup analyses, or further analyze other parameters, such as heart function, quality of life and length of hospital stay.
8
McIntyre, Phillip, Susan Kerrigan, and Marion McCutcheon. Australian Cultural and Creative Activity: A Population and Hotspot Analysis: Albury-Wodonga. Queensland University of Technology, 2020. http://dx.doi.org/10.5204/rep.eprints.206966.
Full textAbstract:
Albury-Wodonga, situated in Wiradjuri country, sits astride the Murray River and has benefitted in many ways from its almost equidistance from Sydney and Melbourne. It has found strength in the earlier push for decentralisation begun in early 1970s. A number of State and Federal agencies have ensured middle class professionals now call this region home. Light industry is a feature of Wodonga while Albury maintains the traditions and culture of its former life as part of the agricultural squattocracy. Both Local Councils are keen to work cooperatively to ensure the region is an attractive place to live signing an historical partnership agreement. The region’s road, rail, increasing air links and now digital infrastructure, keep it closely connected to events elsewhere. At the same time its distance from the metropolitan centres has meant it has had to ensure that its creative and cultural life has been taken into its own hands. The establishment of the sophisticated Murray Art Museum Albury (MAMA) as well as the presence of the LibraryMuseum, Hothouse Theatre, Fruit Fly Circus, The Cube, Arts Space and the development of Gateway Island on the Murray River as a cultural hub, as well as the high profile activities of its energetic, entrepreneurial and internationally savvy locals running many small businesses, events and festivals, ensures Albury Wodonga has a creative heart to add to its rural and regional activities.
9
Haertel, Kateryna. ECMI Minorities Blog. Ukraine’s National Minorities Trapped by the War: the Cases of Ethnic Greeks and Bulgarians. European Centre for Minority Issues, 2022. http://dx.doi.org/10.53779/smlq2239.
Full textAbstract:
As the war against Ukraine erupted on 24 February 2022, national minorities found themselves among its first victims, both as individuals and communities characterized by unique knowledge, language, and culture. This piece looks into the immediate effects of the war on ethnic Greeks and Bulgarians, and potential lessons learned for the state of Ukraine and its minorities from these tragic events. Whereas ethnic Greeks strive for physical survival in a besieged city of Mariupol and its surroundings, ethnic Bulgarians have mobilized in support of refugees. Those situations highlight the role of minority community leaders in voicing support for the Ukrainian authorities and as facilitators of aid from kin-states, as well as turn minority civil society organizations (CSOs) into agents of change of nation-wide significance.
10
Aromi, Daniel, María Paula Bonel, Julian P. Cristia, et al. Research Insights: How Much Has Human Mobility Been Reduced by Social Distancing Policies in Latin America and the Caribbean? Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003135.
Full textAbstract:
The lockdowns implemented in Latin America and the Caribbean in March 2020 reduced the share of people who travel more than 1 km (about 0.6 miles) per day by 10 percentage points during the 15 days following its implementation. The effects of the lockdowns declined over time: the effect amounted to 12 percentage points during the first week and to 9 percentage points during the second week of the implementation of the lockdowns. In contrast, school closures reduced mobility by only 5 percentage points, and no effects were found for bar and restaurant closures or the cancellation of public events. The results suggest that lockdowns are a tool that can produce reductions in mobility quickly. This is important given the expectation that reduced mobility slows the spread of COVID-19.