1,583 research outputs found
Replication Data for: Conservation implications of Sabellaria spinulosa reef patches in a dynamic sandy-bottom environment
No full textThis dataset consists of three folders:
Bathymetry_Data (split up into two zip files per campaign year, due to large file sizes)
Endobenthos_Data
Epifauna_Data
Raw video footage is added as separate files per transect, per campaign year. Note that some video files are currently not available due to upload file size limitation; these can be requested by contacting the first author
A sequence of flux transfer events potentially generated by different generation mechanisms
No full textFlux transfer events (FTEs) are magnetic structures generated by time-varying reconnection at the dayside magnetopause. Understanding their generation mechanism is important, because it is necessary in order to understand the global contribution of FTEs to the convection process. We present observations of several FTEs sequentially observed by Cluster at the subsolar magnetopause. Cluster detected also several reconnection jets, which seem to be systematically associated with the trailing edge of the FTEs. This association is expected only in the FTEs formed by single X line reconnection but could be compatible also with the multiple X line model, when reconnection at one X line is dominant. Instead, it does not seem compatible with original mechanism proposed by Russell and Elphic (1978). For a large FTE, not associated with any reconnection jet, the Grad-Shafranov reconstruction obtained from Cluster 1 data recovers a flux rope, indicative of multiple X line reconnection. This same FTE was detected also by Cluster 3, which observed an asymmetric signature in the magnetic field component normal to the magnetopause. We show that this asymmetric signature was caused by an outward motion of the magnetopause. The orientation of the other FTEs, obtained from a Grad-Shafranov optimization, shows considerable spread, despite the relatively steady conditions. Our interpretation is that a combination of single and multiple X line reconnection generated these FTEs. The FTEs in the first part of the crossing, associated with reconnection jets, are generated by the single X line model and may therefore not satisfy the Grad-Shafranov assumptions so well. Instead, the last FTE, slower, bigger, and well separated from the previous ones, may be formed by multiple X line reconnection
Episodic encoding is more than the sum of its parts: An fMRI investigation of multifeatural contextual encoding
No full textEpisodic memories are characterized by their contextual richness, yet little is known about how the various features comprising an episode are brought together in memory. Here we employed fMRI and a multidimensional source memory procedure to investigate processes supporting the mnemonic binding of item and contextual information. Volunteers were scanned while encoding items for which the contextual features (color and location) varied independently, allowing activity elicited at the time of study to be segregated according to whether both, one, or neither feature was successfully retrieved on a later memory test. Activity uniquely associated with successful encoding of both features was identified in the intra-parietal sulcus, a region strongly implicated in the support of attentionally mediated perceptual binding. The findings suggest that the encoding of disparate features of an episode into a common memory representation requires that the features be conjoined in a common perceptual representation when the episode is initially experienced
Environmental and Parental Influences on Offspring Health and Growth in Great Tits (Parus major)
No full textPMCID: PMC3728352This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Experimental investigation on the aerodynamic characteristics of a bio-mimetic flapping wing with macro-fiber composites
No full textThis study describes the development of a bio-mimetic flapping wing and the aerodynamic characteristics of a flexible flapping wing. First, the flapping wing is designed to produce flapping, twisting, and camber motions by using a bio-mimetic design approach. A structural model for a macro-fiber composite (MFC) actuator is established, and structural analysis of a smart flapping wing with the actuator is performed to determine the wing configuration for maximum camber motion. The analysis model is verified with the experimental data of the smart flapping wing. Second, aerodynamic tests are performed for the smart flapping wing in a subsonic wind tunnel, and the aerodynamic forces are measured for various test conditions. Additionally, the effects of camber and chordwise wing flexibility on unsteady and quasi-steady aerodynamic characteristics are discussed. The experimental results demonstrate that the effect of the camber generated by the MFC produces sufficient aerodynamic benefit. It is further found that chordwise wing flexibility is an important parameter in terms of affecting aerodynamic performance, and that lift produced in a quasi-steady flow condition is mostly affected by the forward speed and effective angle of attack.This work was supported by grant No. R01-2005-000-
10848-0 from the Basic Research Program of the Korea
Science & Engineering Foundation. The first author
would like to thank the Brain Korea 21 Project in 2006
Central Europe in search of (lost) identity. Literary and legal findings
No full textWhy Central, and not Eastern Europe? This is the question that people from the West often ask. Central Europeans, on the other hand, do not doubt that they are not a part of the East. The purpose of this paper is to analyse the notion of Central Europe and to investigate whether a common Central European identity exists, both in the general and legal aspect. In the first, introductory part of the paper the author ventures to define the idea of Central Europe. The second part of the paper is devoted to the question of a general Central European identity. The author approaches the problem through the analysis of four authors describing the region – Milan Kundera, György Konrád, Czesław Miłosz, and Timothy Garton Ash. In the third part of the paper the author focuses on the concept of a potential Central European legal identity, whose existence is still widely debated, comparing and contrasting two opposite approaches to this problem. In the final, concluding part of the paper the author outlines the ideas for further research into the intersections between the countries of the region
De ontwikkeling van een meest optimale draagstructuur betreffende project KJ-plein te den Haag
No full textProject Koningin Julianaplein omvat een nieuw te bouwen hoogbouwproject naast Den Haag CS. Voor zover bekend heeft het bouwwerk (nog) geen officiële naam, zodat wordt volstaan met een plaatsgebonden aanduiding: project KJ – plein. Het project vormt een onderdeel van de toekomstvisie van het stationsgebied, welke weer een onderdeel vormt van het Masterplan Den Haag Nieuw Centraal. Het gebied rondom Den Haag CS profileert zich vooralsnog tot een onaantrekkelijk overgangszone tussen het historische stadcentrum en een modern kwartaal. De gemeente Den Haag schreef voor de nieuw te bouwen hoogbouw naast Den Haag CS een prijsvraag uit. Dit gebeurde in samenwerking met NS Poort en Multi Vastgoed. Het winnende ontwerp kwam van O.M.A., het architectenbureau van Rem Koolhaas. Deze ontwierp hiertoe een spraakmakende stationsentree die perfect aansluit op de stedenbouwkundige richtlijnen voor dit gedeelte van de stad. Het ontwerp omvat ruim 100.000 m² waarvan 42.000 m² is bestemd voor kantoren, 34.000 m² voor woningen en 4.300 m² voor commercie en overige voorzieningen. Daarnaast wordt onder het koningin Julianaplein parkeergelegenheid gesitueerd (11.500 m2), tezamen met een fietsenstalling (7.300 m2). Hoewel het ontwerp één geheel vormt, bestaat er een duidelijk onderscheid tussen een woon- en kantoorgedeelte. Laatstgenoemde steunt hierbij af op de woonvleugel en geldt zodoende als afhankelijk. Voor de uitvoering betekent dit dat het woongebouw voldoende gereed dient te zijn alvorens de koppeling gemaakt kan worden. Architectonisch gezien vormen beide gebouwdelen een volledige harmonie. Constructief gezien gelden echter grote verschillen. De uitdaging bevindt zich hierbij vooral in het kantoorgedeelte. Deze wordt gekenmerkt door 22 verdiepingen met aan weerszijde twee enorme overstekken. Ter versterking van het beoogde dynamische karakter kraagt het overstek, terzijde van gebouw Stichthage, over deze heen uit.Design and ConstructionCivil Engineering and Geoscience
How self-talk helps or hinders your resilience and wellness: Strategies to unlock the inherent healing power of your brain and body
No full textThe idea that self-talk has an influence on wellness, motivation, success and learning has been in public awareness for many years. Advancing studies in neuroscience have helped us better understand how deep-seated memories and trauma mould present beliefs and attitudes that affect how we deal with stress and prepare for new learning. With a variety of interactive suggestions, the presentation raises awareness of common types of negative self-talk and presents research- supported strategies.resiliencewellnessself-talkPresented at: Vancouver Community College Teaching, Learning, and Research Symposium, February 25-26, 202
Current sheet axial dynamics of 2.5 kJ KSU-DPF under high pressure regime
No full textIn dense plasma focus (DPF) machines, the high-pressure (HP) regime of operation can be used as alternative technique to short-circuit (SC) test as the current sheet motion is minimal. The SC test was performed to get the right values for the static parameters of the machine. HP shots of more than 30 mbar were performed on the 2.5-kJ Kansas State University DPF machine to determine the deviation of HP values from SC values in computed static inductance and resistance. The test was performed using various gases over a wide range of molecular/atomic mass, starting from hydrogen as the lightest gas up to argon. It was found that the deviation in static inductance and resistance computed from HP method is inversely proportional to gas molecular mass at a certain pressure. The heavy gases like neon and argon were found to give the most accurate results. At 60 mbar of argon, the inductance deviation was 6.5%, and the resistance deviation was 14%. It was found also that increasing gas pressure over 30 mbar using heavy gases like Ar or Ne gives no effective improvement on the computed static impedance. Snowplow model was used to predict the axial position and the axial speed of the current sheet during the HP regime. The model showed that the average axial speed in heavy gases like argon was 0.8 cm/ μs, whereas in hydrogen, it was 1.6 cm/μs
Effects of overfeeding by gastric intubation on body composition of adult female rats and on heat production during feeding and fasting
No full textThe effects of overfeeding by gastric intubation on body composition and energy metabolism of adult female rats were studied. There were significant linear increases in carcass DM, fat and energy during 10 days as daily metabolizable energy (ME) intake was increased from 160 to 300 kJ. Rats were given daily 130 kJ to maintain weight or about 270 kJ daily for 120 days. Measurements of fed and fasting heat production (FHP) were made at intervals. FHP, kJ/day kg0.75, decreased by 15% in 120 days on either treatment. The mean carcass weight of the overfed rats increased from 216 to 465 g, over 90% of the increase being due to fat. For 6, 12, 18, 24 or 30 days 3 rats were given daily 137 kJ to maintain weight or about 300 kJ. There were significant linear increases with time in carcass weight, DM, fat and energy. FHP measured before slaughter increased from 118 to 160 kJ/day but stayed constant at 334 kJ/day kg0.75. In all the experiments there were significant increases in carcass crude protein (N X 6.25) in response to overfeeding. The efficiency of utilization of energy for production or for maintenance and production averaged 0.92 and 0.86 to 0.88. It is concluded that FHP may be regarded as constant over a wide range of body compositions in adult rats made obese by force-feeding..RE: 27 ref.; SC: ZA; HE; CA; NU; BE; ZD; 0USource type: Electronic(1) http://upei-resolver.asin-risa.ca?sid=SP:CABI&id=pmid:&id=&issn=0007-1145&isbn=&volume=49&issue=2&spage=193&pages=193-202&date=1983&title=British%20Journal%20of%20Nutrition&atitle=Effects%20of%20overfeeding%20by%20gastric%20intubation%20on%20body%20composition%20of%20adult%20female%20rats%20and%20on%20heat%20production%20during%20feeding%20and%20fasting.&aulast=McCracken&pid=%3Cauthor%3EMcCracken%2c%20K%20J%3bMcNiven%2c%20M%20A%3C%2Fauthor%3E%3CAN%3E19831446552%3C%2FAN%3E%3CDT%3EJournal%20article%3C%2FDT%3
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