23 research outputs found
Understanding the radio luminosity function of star-forming galaxies and its cosmological evolution
No full text\ua9 2024 The Author(s).We explore the redshift evolution of the radio luminosity function (RLF) of star-forming galaxies using GALFORM, a semi-analytic model of galaxy formation and a dynamo model of the magnetic field evolving in a galaxy. Assuming energy equipartition between the magnetic field and cosmic rays, we derive the synchrotron luminosity of each sample galaxy. In a model where the turbulent speed is correlated with the star formation rate, the RLF is in fair agreement with observations in the redshift range 0 ≤ z ≤ 2. At larger redshifts, the structure of galaxies, their interstellar matter, and turbulence appear to be rather different from those at z ≾ 2, so that the turbulence and magnetic field models applicable at low redshifts become inadequate. The strong redshift evolution of the RLF at 0 ≤ z ≤ 2 can be attributed to an increased number, at high redshift, of galaxies with large disc volumes and strong magnetic fields. On the other hand, in models where the turbulent speed is a constant or an explicit function of z, the observed redshift evolution of the RLF is poorly captured. The evolution of the interstellar turbulence and outflow parameters appear to be major (but not the only) drivers of the RLF changes. We find that both the small- and large-scale magnetic fields contribute to the RLF but the small-scale field dominates at high redshifts. Polarization observations will therefore be important to distinguish these two components and understand better the evolution of galaxies and their non-thermal constituents
RUSSIAN LITERATURE AS FOREIGN (RLF) IN THE TURKISH AUDIENCE
No full textННОТАЦИЯВ статье поднимаются актуальные проблемы преподавания русской литературы иностранной аудитории. Автор на опыте преподавания русской литературы в турецком университете показывает эффективность комплексного подхода, включающий в себя принцип сознательности, историзм и междисциплинарный подход.ABSTRACTThe article raises current problems of teaching Russian literature to foreign audiences. The author, through the experience of teaching Russian literature at a Turkish university, shows the effectiveness of an integrated approach, which includes the principle of consciousness, historicism and an interdisciplinary approach. </p
Construction inspection report, flood control berm repair, Riverbend Landfill (RLF), McMinnville, Oregon
No full textTitle from PDF caption (viewed on July 18, 2019).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Белорусские праздники на занятиях по РКИ (на материале лингвокультурологического комплекса «Беларусь»)
No full textThis article is consider the problem of formation the linguistic country studies competence based on topic «The
Belarusian holidays» for humanitarian students-foreigners. The object of research is the texts about Belarusian holidays
in complex «Belarus» [1]. The main idea includes demonstration of didactic materials which could help to form the
linguistic country studies competence in in-class learning and at the extracurricular time. The main objectives: to define
selection criteria of Belarusian holidays and texts for RLF (Russian like foreign) classes, to demonstrate complex of
exercises. In article author decides theoretical problems: amplify content and structure of the linguistic country studies
competence, shows the role of information about Belarusian holidays (it helps to form the linguistic country studies
competence). Practical part of the article demonstrates the complex of exercises which can be used at class. Conclusion:
studying Belarusian holidays at RLF classes helps to form the linguistic country studies competence of students by
linguistic enculturation foreigners, and the main instrument of this process is national culture
UNUSUAL EVENTS DETECTION BASED ON MULTI-DICTIONARY SPARSE REPRESENTATION USING KINECT
No full textUnusual events detection plays a crucial role in surveillance applications, which is becoming more and more urgent need for public security. However, illumination and scale changing, lacking of sufficient training data and subjective of abnormality definition are some of the severe difficulties, which are hard to deal with by widely used traditional cameras. In order to solve these problems, first, a novel feature is proposed in this paper, which is named random local feature (RLF) to describe the spatial-temporal information of depth image detected by the Kinect sensor. Then, we expand the sparse representation framework to a multi-dictionary sparse representation framework, based on the intuition that that anomaly of a same event may vary a lot in different regions in a scene. We split the depth video into several regions and use detected RLF features in each region to train dictionary by K-SVD algorithm, and use the OMP algorithm to sparse-represent each feature. Finally, an objective function is introduced to evaluate the anomaly of features in each region according to reconstruction errors. Unusual events are defined as those incidences that occur very rarely in the entire video sequence in our system, which is tested on real data and demonstrates promising results in unusual events detection.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000351597603011&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Imaging Science & Photographic TechnologyCPCI-S(ISTP)
Digressions on the Concept of History in Hannah Arendt
No full textEn el futuro artículo ofreceremos algunas reflexiones sobre la historia en la obra de Hannah Arendt, partiendo de la premisa de que esta se asienta en su concepto de acción. Con tal fin, recurriremos a distintos textos en los que la autora alemana discutió nociones cruciales para su definición de la condición humana, a saber, las tres actividades bajo las cuales se le dio vida al hombre en la tierra y la separación entre lo público y lo privado. Nuestro vínculo con el pasado y su relación tanto con el presente como con el futuro estarán también en el centro del recorrido que aquí proponemos.In the following article we will offer some reflections on history in Hannah Arendt’s work, starting from the premise that it is based on her concept of action. To this end, we will turn to different texts in which the German author discussed crucial notions for her definition of the human condition, namely, the three activities under which man was given life on Earth –labor, work and action– and the separation between the public and the private. Our link with the past and its relation to both the present and the future will also be at the center of the journey we will propose here.Fil: Svampa, María Lucila. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Sociales. Instituto de Investigaciones "Gino Germani"; Argentina. Consejo Interuniversitario Nacional. - Ministerio de Educacion, Cultura, Ciencia y Tecnologia. Consejo Interuniversitario Nacional.; Argentina. Humboldt-Universität zu Berlin; Alemani
Foster parents' understanding of the foster child's perspective: Does it matter and can it be changed?
No full textSocio-emotional outcomes for children placed in care are more positive when foster parents have a secure state of mind regarding attachment and are able to think about the child’s unique psychological perspective (Dozier, Stovall, Albus & Bates, 2001; Schofield & Beek, 2005a). One aspect of parents’ thinking about the child has been conceptualised as mind-mindedness (Meins, 1998) and is measured by the proportion of mind-related comments made when a parent is asked to describe their child. The first study examines whether foster parent’s mind-mindedness and attachment perceptions, amongst other child and foster parent characteristics, are positively associated with the foster parent-child relationship and the child’s emotional and behavioural outcomes.
The study found that foster parents with higher mind-mindedness had foster children with fewer behaviour problems and this relationship was enhanced by foster parents having positive attachment perceptions. Moreover, foster parent mind-mindedness was not related to the quality of the parent-child relationship, except when parents had positive attachment perceptions. Regarding the child’s placement characteristics, the number of previous placements the child had experienced predicted the child’s emotional and behaviour problems and the age at which the child was placed predicted the quality of the foster parent-child relationship. The best placement predictors of both outcome variables considered together were the age at which the child was placed and short term placements.
Drawing on attachment theory, and guided by the findings of study one, the author developed a a training programme and a Relational Learning Framework (RLF) to assist foster parents and foster care practitioners to understand the child’s psychological perspective. The second study employed a multiple- baseline design to evaluate the effectiveness of the RLF guided training programme. Statistically significant improvements were found regarding parents’ reports of children’s behaviour problems, parents’ daily stress, the attachment relationship and children’s overall functioning at post-test. However, at follow-up, only the children’s overall functioning remained significantly improved, although increases in positive mind-mindedness became statistically significant, relative to post-test. Some foster parents showed decreases in wellbeing scores, relative to their scores at pre- and post-test.
The third study used a pre- post-test design to evaluate the effectiveness of the training programme to assist foster care practitioners to apply the RLF in their clinical practice and to deliver the training programme to foster parents. At post-test, practitioners’ empathy and reflectiveness showed a statistically significant increase but no statistically significant increases were found in practitioners’ mind-mindedness. The training was rated highly by participants and a thematic analysis of diary entries showed that they used the RLF in their practice, were able to help foster parents understand the child’s perspective, and reported positive therapeutic gains from utilising these techniques.
The research provides preliminary evidence that foster parent mind-mindedness, in conjunction with attachment perceptions, is associated with the child’s emotional and behaviour problems and the foster parent-child relationship. The results from the intervention study with foster parents showed initially promising gains, which were not maintained at follow-up, and the results from the foster care practitioners study indicated improvements in practitioners’ empathy and reflectiveness, as well as positive outcomes of using the training material
The Great Barrier Reef: The chronological record from a new borehole
No full textA new borehole, 210 mbsf (meters below sea floor) deep, drilled in Ribbon Reef 5 on the Great Barrier Reef off Cooktown, NE Australia, reveals a shallowing-upwards succession, the younger part of which is punctuated by a series of erosion surfaces. Nine depositional units have been defined by lithological changes and are numbered sequentially from the base of the hole upwards. Aminostratigraphy, magnetostratigraphy, radiocarbon dating, uranium series dating, and modeling together with strontium ratios have been applied in an attempt to establish a chronology of accumulation.
Carbonate deposition began about 770 ka ago in a relatively deep-water slope environment and is represented by a series of debris flows. Lithoclasts within these rocks, indicate that older limestones already existed in the area. Subsequent accretion involved the downslope accumulation of grainstones and wackestones, sometimes cross-laminated, characterized by intervals with abundant rhodoliths and scattered, probably reworked, corals. Four units at the base of the hole reflect deposition that probably began during isotope stage 16 and continued through stage 15 from about 770 to about 564 ka. Unit 5 probably extended to stage 11 (about 400 ka), and unit 6 to stage 9 (∼ 330 ka).
Typical reefal associations of corals and calcareous algae were established in this area only above depths of about 100 m in the borehole, units 5-4. The succession is apparently unbroken to an erosion surface at 36 mbsf indicating subaerial emergence. The lack of evidence of emergence below this surface reflects progressive accretion or progradation or both. Two younger erosion surfaces define further periods of lowered sea level. Unit 7 is attributed to deposition during isotope stage 7, but erosion during stage 8 resulted in the preservation of only 8 m of unit 7 limestones. Unit 8 is correlated with stage 5 (∼125 ka), and unit 9 is interpreted as Holocene (post 7,700 ka). The limited thicknesses of units 7, 8, and 9 are considered to reflect erosion. The progressive shallowing brought the depositional surface within the zone exposed during lowstands, and there is no sedimentological evidence that aggradation was restricted by a lack of accommodation
A Closer Look at Loneliness: Why Do First-Generation Migrants Feel More Lonely Than Their Native Dutch Counterparts?
No full textTen Kate RLF, Bilecen B, Steverink N. A Closer Look at Loneliness: Why Do First-Generation Migrants Feel More Lonely Than Their Native Dutch Counterparts? The Gerontologist. 2020;60(2):291-301.BACKGROUND AND OBJECTIVES: Along with the current aging demographics in the Netherlands, the number of older first-generation migrants is also increasing. Despite studies suggesting a higher quantity of social contacts of migrants, loneliness is more common among migrants as compared to native Dutch. We theorize that migrants experience more emotional and social loneliness due to a lower satisfaction with social relationships and lower participation in social activities, respectively, compared to their native counterparts.; RESEARCH DESIGN AND METHODS: We use data from Statistics Netherlands (N = 7,920) with first-generation migrants aged 40 years and older and their Dutch counterparts. Contact frequency, household composition, satisfaction with social relationships, relationship quality with the partner, and social activities, are used as main predictors and separate regression models for social and emotional loneliness are analyzed.; RESULTS: Compared to the native Dutch, first-generation migrants are both socially and emotionally more lonely. Migrants have a similar contact frequency as the native Dutch, but are less satisfied with their social relationships, which contributes to their higher emotional, social, and overall loneliness. Migrants engage less in social activities but this does not put them at additional risk of loneliness.; DISCUSSION AND IMPLICATIONS: Migrants experience more social and emotional loneliness and are less satisfied with their social relationships compared to their native counterparts. Interventions should focus on reducing both social and emotional loneliness among older migrants. Specific attention should be paid to fostering satisfying social interactions. Additionally, encouraging migrants to broaden their social network may reduce social loneliness. © The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America
Biology of insulin-like factor 3 in human reproduction
No full text© The Author 2009. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology.BACKGROUND: Insulin-like factor 3 (INSL3) is a neohormone that has evolved to address specific mammalian traits, in particular, the first phase of testicular descent towards the scrotum during mid-gestation. METHODS: A thorough literature search was made in PubMed using the terms INSL3, as well as the older synonyms RLF and Ley-IL. RESULTS: INSL3 is a major secretory product of the testicular Leydig cells in the fetus and in adult men, and in rodent models, reduction in fetal INSL3 expression is an early marker of the testicular dysgenesis syndrome. In women, it is produced in lower amounts by ovarian theca and luteal cells, and circulating levels are increased in women with polycystic ovarian syndrome. During pregnancy, there is evidence for an interaction regulating the feto-placental unit. The presence of INSL3 in amniocentesis samples taken at 12–14 weeks gestation is absolutely specific for male gender, and levels are predictive of subsequent pre-eclampsia and/or birthweight. INSL3 is also involved in adult traits, such as spermatogenesis and bone metabolism. In adult men, INSL3 is constitutively expressed and secreted into the bloodstream at a constant level, reflecting the number and/or functional capacity of the Leydig cells. In complete contrast, testosterone is highly variable within individuals, is acutely responsive to fluctuations in the hypothalamic–pituitary–gonadal axis and appears to have marginal diagnostic value. INSL3 declines consistently with age in adult men. CONCLUSIONS: INSL3 promises to become an important new diagnostic tool to characterize those men with late-onset hypogonadism and to add clinical diagnostic value at amniocentesis.Richard Ivell and Ravinder Anand-Ivel
