4,636 research outputs found
Waste-full Crossings: Thomas King’s Rubbishy Border
No full textThomas King’s Truth & Bright Water begins with an illusory image of a smooth
border crossing that never takes place, anticipating the fatal, failed border crossing that
constitutes the novel’s tragic climax. King foregrounds the unfinished and wasted state of the
only bridge “serving” the cross-border community:
At a distance, the bridge between Truth and Bright Water looks whole and complete,
a pale thin line, delicate and precise, bending over the Shield and slipping back into
the land like a knife. But if you walk down the coulees and stand in the shadows of
the deserted columns and the concrete arches, you can look up through the open
planking and the rusting webs of iron mesh, and see the sky. (1
Bright solitary waves and non-equilibrium dynamics in atomic Bose-Einstein condensates
No full textIn this thesis we investigate the static properties and non-equilibrium dynamics of bright solitary waves in atomic Bose-Einstein condensates in the zero-temperature limit, and we investigate the non-equilibrium dynamics of a driven atomic Bose-Einstein condensate at finite temperature.
Bright solitary waves in atomic Bose-Einstein condensates are non-dispersive and soliton-like matter-waves which could be used in future atom-interferometry experiments. Using the mean-field, Gross-Pitaevskii description, we propose an experimental scheme to generate pairs of bright solitary waves with controlled velocity and relative phase; this scheme could form an important part of a future atom interferometer, and we demonstrate that it can also be used to test the validity of the mean-field model of bright solitary waves. We also develop a method to quantitatively assess how soliton-like static, three-dimensional bright solitary waves are; this assessment is particularly relevant for the design of future experiments.
In reality, the non-zero temperatures and highly non-equilibrium dynamics occurring in a bright solitary wave interferometer are likely to necessitate a theoretical description which explicitly accounts for the non-condensate fraction. We show that a second-order, number-conserving description offers a minimal self-consistent treatment of the relevant condensate -- non-condensate interactions at low temperatures and for moderate non-condensate fractions. We develop a method to obtain a fully-dynamical numerical solution to the integro-differential equations of motion of this description, and solve these equations for a driven, quasi-one-dimensional test system. We show that rapid non-condensate growth predicted by lower-order descriptions, and associated with linear dynamical instabilities, can be damped by the self-consistent treatment of interactions included in the second-order description
The stimulating effect of bright light on physical performance depends on internal time.
No full textThe human circadian clock regulates the daily timing of sleep, alertness and performance and is synchronized to the 24-h day by the environmental light-dark cycle. Bright light exposure has been shown to positively affect sleepiness and alertness, yet little is known about its effects on physical performance, especially in relation to chronotype. We, therefore, exposed 43 male participants (mean age 24.5 yrs ± SD 2.3 yrs) in a randomized crossover study to 160 minutes of bright (BL: ≈ 4.420 lx) and dim light (DL: ≈ 230 lx). During the last 40 minutes of these exposures, participants performed a bicycle ergometer test. Time-of-day of the exercise sessions did not differ between the BL and DL condition. Chronotype (MSF(sc), mid-sleep time on free days corrected for oversleep due to sleep debt on workdays) was assessed by the Munich ChronoType Questionnaire (MCTQ). Total work was significantly higher in BL (median 548.4 kJ, min 411.82 kJ, max 875.20 kJ) than in DL (median 521.5 kJ, min 384.33 kJ, max 861.23 kJ) (p = 0.004) going along with increased exhaustion levels in BL (blood lactate (+12.7%, p = 0.009), heart rate (+1.8%, p = 0.031), and Borg scale ratings (+2.6%, p = 0.005)) in all participants. The differences between total work levels in BL and DL were significantly higher (p = 0.004) if participants were tested at a respectively later time point after their individual mid-sleep (chronotype). These novel results demonstrate, that timed BL exposure enhances physical performance with concomitant increase in individual strain, and is related not only to local (external) time, but also to an individual's internal time
Bright Young Things
No full textBright young things required for big project...Six young people respond to the advert in The Times - all clever, all disaffected with their lives, all looking for an escape. What they least expect is to find themselves prisoners on an island, at the mercy of...who? Their needs are well provided for with a comfortable house and provisions but there's no telephone, no television and no way to escape. The bright young things have to start working out why they're there and how to get away before it's too late..
LOSS AND DEPRESSION IN JENNIFER NIVEN’S ALL THE BRIGHT PLACES
No full textThis study discusses loss and depression in Jennifer Niven’s novel, All the Bright Places. The novel represents people who undergo loss and depression because of losing a loved one. This is library research and applies mimetic theory proposed by Abrams saying that literature is an imitation of the real world. The analysis is focused on the loss and depression as a result of the death, neglect, or abandoment. The author creates Violet and Finch to represent people who undergo the situations. Violet losses her beloved sister and suffers from depression of feeling sad and guilty. Finch losses his parents’ figure and care and the worst is he loses his freedom to make friend because of bullying, so he suffers from sadness and depression and ends in commiting suicide. It is found that the author, Jennifer Niven through her novel All the Bright Places conveys that loss can make people depress and affect their lives, and many of them can suffer and live tragically
Formation of bright solitary matter-waves
No full textThis thesis presents the development of an experimental apparatus to produce Bose-Einstein condensates (BECs) with tunable interparticle interactions. The ability to precisely control the strength of these interactions, and even to switch them from repulsive to attractive, allows one to probe novel regimes of condensate physics, from the collapse of attractively interacting BECs and the formation of solitary matter-waves to the observation of beyond mean-field effects in strongly repulsive condensates.
The construction and characterisation of both a single and crossed beam optical dipole trap is presented. In the single beam case we develop a technique allowing the guided transport of atoms along the beam and up to a room-temperature surface; a technique which can be used to evaporatively cool the trapped atomic cloud. We produce Bose-Einstein condensates of 87Rb in the F=1, mF=-1 state in this trap, comparing the effect of beam waist on the evaporation trajectory. In the crossed beam trap Bose-Einstein condensation of 87Rb is realised in three distinct trapping configurations, along with a 1D optical lattice formed by changing the polarisation of the beams.
A method of direct cooling of 85Rb atoms in the crossed trap is developed using a magnetic Feshbach resonance to precisely tune both the elastic and inelastic scattering properties of the atoms. The resonance used for this work occurs at 155G in collisions between atoms in the F=2, mF=-2 state of 85Rb. Bose-Einstein condensates of up to 40,000 85Rb atoms are formed in this trap and we demonstrate the presence of tunable interatomic interactions, exploring the collapse phenomenon associated with attractive condensates.
By loading the 85Rb condensate into a quasi-1D waveguide we show that stable attractive condensates can be created, taking the form of bright solitary matter-waves. We observe a solitary wave of ~2,000 atoms which propagates, without dispersion, along the waveguide over a distance of ~1.1mm. The particle-like nature of the solitary wave is demonstrated by classical reflection of the wavepacket from a repulsive Gaussian barrier
Atomothenemus Bright 2019
No full text<i>Atomothenemus</i> Bright, 2019: 106 <p> <b>Type of genus</b></p> <p> <i>Atomothenemus unicus</i> Bright, 2019.</p> <p> <b>Diagnosis</b></p> <p>Antennae with two funicle segments (including the pedicel), antennal club with horizontal sutures.</p>Published as part of <i>Johnson, Andrew J., Hulcr, Jiri, Knížek, Miloš, Atkinson, Thomas H., Mandelshtam, Michail Yu., Smith, Sarah M., Cognato, Anthony I., Park, Sangwook, Li, You & Jordal, Bjarte H., 2020, Revision of the Bark Beetle Genera Within the Former Cryphalini (Curculionidae: Scolytinae), pp. 1-81 in Insect Systematics and Diversity 4 (3)</i> on page 27, DOI: 10.1093/isd/ixaa002, <a href="http://zenodo.org/record/10112886">http://zenodo.org/record/10112886</a>
Trypolepis Bright 2019
No full text<i>Trypolepis</i> Bright, 2019: 182 <p> <b>Type of genus</b></p> <p> <i>Trypolepis antillica</i> Bright, 2019.</p> <p> <b>Diagnosis</b></p> <p> This genus can be diagnosed from the similar <i>Acorthylus</i> and <i>Neocryphus</i> by the antenna, which has only two funicle segments, with the first (pedicel) of a similar size to the second, and from the superficially similar <i>Ernoporus</i> by the broadly emarginated eye.</p> <p> <b>Female</b></p> <p>Eye broadly emarginated. Antennae with two funicle segments (including pedicel) of a similar size. Antennal club large, flat, with a single suture. Frons with a weakly concave region above epistoma. Pronotum with two asperities just behind margin, plus asperities in</p> <p>concentric rows on pronotal slope. Pronotal summit distinct. Declivity vertical at the apex.</p> <p> <b>Male</b></p> <p>Unknown.</p> <p> <b>Distribution</b></p> <p>Grenada (West Indies).</p> <p> <b>Remarks</b></p> <p> Monotypic. This species was described during the later stages of the preparation of this manuscript. Based on the description and the photos, it is clearly very similar to <i>Acorthylus</i> and <i>Neocryphus</i>,</p> <p>differing only by the antennal funicle.</p> <p> <b>Type material examined</b></p> <p> Photo of holotype of <i>Trypolepis antillica</i> Bright, 2019.</p> <p> <b>Included species</b></p> <p> <i>Trypolepis antillica</i> Bright, 2019: 182.</p> <p> Remarks: The original spelling, <i>antillicum</i>, is corrected to be fem-</p> <p>inine to match the gender of the genus.</p>Published as part of <i>Johnson, Andrew J., Hulcr, Jiri, Knížek, Miloš, Atkinson, Thomas H., Mandelshtam, Michail Yu., Smith, Sarah M., Cognato, Anthony I., Park, Sangwook, Li, You & Jordal, Bjarte H., 2020, Revision of the Bark Beetle Genera Within the Former Cryphalini (Curculionidae: Scolytinae), pp. 1-81 in Insect Systematics and Diversity 4 (3)</i> on pages 67-69, DOI: 10.1093/isd/ixaa002, <a href="http://zenodo.org/record/3826789">http://zenodo.org/record/3826789</a>
Developing Children's Cognitive Functions and Increasing Learning Effectiveness: An Intervention Using the Bright Start Cognitive Curriculum for Young Children
No full textTo prepare the young generation for the challenges of a competitive and rapidly changing world, the education systems of Singapore and in many countries in East Asia are focusing on developing children's thinking and learning skills.
This research study examines the effects of a cognitive programme, the Bright Start Cognitive Curriculum for young children, on kindergarten children's cognitive functions and their learning effectiveness. The study adopted an experimental, pretest posttest design with an experimental group of 43 children and a control group of 37 children. The Bright Start Cognitive Curriculum was systematically implemented over a period of six months with the children from the experimental group. The children from the control group had their regular integrated thematic curriculum.
The study used a combination of methods to collect data, involving measurements of children's pre and post tests performances on cognitive tasks, analyses of video recordings of teaching observations and teachers‟ feedback of children‟s performances in class.
The findings of the research study suggest that children from the experimental group showed greater improvement in all the cognitive tasks from pre to post testing than the children in the control group. The children‟s response to mediation scores in the experimental group were positively correlated with their post test scores. The experimental teachers scored higher in all three essential components of Mediated Learning Experience (MLE) than the control teachers; with marked difference between the two groups in the criteria of transcendence. However, the control teachers scored better in affective involvement, which is not one of the essential qualifying components of MLE
sj-doc-1-mso-10.1177_20552173221133262 - Supplemental material for Bright light therapy as a non-pharmacological treatment option for multiple sclerosis-related fatigue: A randomized sham-controlled trial
No full textSupplemental material, sj-doc-1-mso-10.1177_20552173221133262 for Bright light therapy as a non-pharmacological treatment option for multiple sclerosis-related fatigue: A randomized sham-controlled trial by Lisa Voggenberger, Marion Böck, Doris Moser, Gudrun Lorbeer, Patrick Altmann, Fritz Leutmezer, Thomas Berger and Stefan Seidel in Multiple Sclerosis Journal – Experimental, Translational and Clinical</p
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