Selected tether applications in space: Phase 2

System characteristics and design requirements are assessed for tether deployment. Criteria are established for comparing alternate concepts for: (1) deployment of 220 klb space shuttle from the space station; (2) tether assisted launch of a 20,000 lb payload to geosynchronous orbit; (3) placement of the 20,000 lb AXAF into 320 nmi orbit via orbiter; (4) retrieval of 20,000 lb AXAF from 205 nmi circular orbit for maintenance and reboost to 320 nmi; and (5) tethered OMV rendezvous and retrieval of OTV returning from a geosynchronous mission. Tether deployment systems and technical issues are discussed

Heteroepitaxy of 3-5 compound semiconductors on insulating substrates Interim report

Heteroepitaxial growth of GaAs films on aluminum oxide substrates by trimethylgallium-arsine proces

Viewing the opposite sex through lifestyle magazines: An exploratory study

This study is an exploratory study examining the use of traditional stereotypical gender roles and themes projected in the problem pages of Cosmopolitan, Redbook, Maxim, and Men\u27s Health from 2007. This study is grounded in functionalist feminist media theory and is supplemented by normative theory. The findings show that women\u27s lifestyle magazine problem pages lean more heavily towards traditional gender stereotypes, whereas men\u27s lifestyle magazine problem pages rely on less traditional gender stereotypes. This is partially attributed to a similar formula used in both genders\u27 problem pages, encouraging a traditionally stereotypical female approach to both men\u27s and women\u27s problems

The Impact of Crossramp Angle and Elliptical Path Trajectory on Lower Extremity Muscle Activation

Abstract The purpose of this study was to examine the effects of linear path and converging path ellipticals at three varying crossramp angles (35°, 25°, and 15°) on mean muscle activation of the gluteus maximus (GMAX), semitendinosus (ST), vastus medialis (VM), lateral gastrocnemius (LG), and vastus lateralis (VL). The study consisted of 25 young adults (15 males and 10 females. All subjects had previous experience with elliptical trainers and had no contraindications preventing them from taking part in the study. The main outcome measure was mean muscle activation, presented at %MVC, for GMAX, ST, VM, LG, and VL. A two-way, repeated measures analysis of variance (ANOVA) was performed to determine significance, with an alpha level of 0.05. The converging path elliptical trainer showed no significant difference in muscle activation for GMAX, ST, VM, or LG, compared to the linear path elliptical, but was significantly higher (p = .006) for VL. Results for the crossramp angle showed that VM and VL had significantly higher muscle activation on the 35° ramp angle, with activation lessening from 25° to 15° (p = .027 and p \u3c .001 respectively). LG showed higher activation on the 15° ramp angle with activation lessening from 25° to 35° (p = .003). Exercising at a higher crossramp angle appears to activate the quadriceps more, while exercising at a lower crossramp angle would activate the LG to a higher degree. Additionally, individuals wanting to focus on VL activation should perform exercise on a converging path elliptical at a higher crossramp angle; however, caution should be exercised to account for over strengthening of the VL

Voice Assimilation of Stop Consonants and Fricatives in French and its Relation to Sound Duration and Intra-oral Air-pressure

No abstrac

Sensitive Coverage Saves Lives: Improving media portrayal of suicidal behaviour

The report outlines the results of consultations with journalists, suicide prevention agencies and mental health groups conducted by the journalism ethics charity MediaWise. It makes recommendations for action by media organisations and suicide prevention agencies

Ontologies in the Time of Linked Data

This paper discusses some of the methodological issues one encounters when creating and using ontologies in the rapidly expanding Linked Open Data (LOD) landscape. Over the years the notion of applied ontologies has transitioned from that of a logically formalized knowledge system with varying degrees of inferencing power to that of a lightweight knowledge representation tool. This shift is reflected in the current lexicon where different actors in the LOD community use the term ontology interchangeably with more generic terms like vocabulary or even namespace or data schema. Applied ontologies have been a key area of research in the context of Semantic Web initiative since the late 1990s. The Semantic Web has recently found a new stream of development in the Linked Data initiative, which is considered its natural evolution (Allemang and Hendler, 2011). While a good deal of literature has been devoted to investigating ontology engineering for the Semantic Web, not enough attention has yet been paid to understanding the nature and role that ontologies play in the linked data context, especially from the lens of knowledge organization research. Based on our ongoing work creating Linked Open Data applications and services for digital resources in the domain of the performing arts, we describe methodological steps and lessons learned in line with the spirit of the linked data initiative, where an agile and pragmatic approach to development is combined with the practice of learning from one another

Neutral gas in Lyman-alpha emitting galaxies Haro 11 and ESO 338-IG04 measured through sodium absorption

Context. The Lyman alpha emission line of galaxies is an important tool for finding galaxies at high redshift, and thus probe the structure of the early universe. However, the resonance nature of the line and its sensitivity to dust and neutral gas is still not fully understood. Aims. We present measurements of the velocity, covering fraction and optical depth of neutral gas in front of two well known local blue compact galaxies that show Lyman alpha in emission: ESO 338-IG 04 and Haro 11. We thus test observationally the hypothesis that Lyman alpha can escape through neutral gas by being Doppler shifted out of resonance. Methods. We present integral field spectroscopy from the GIRAFFE/Argus spectrograph at VLT/FLAMES in Paranal, Chile. The excellent wavelength resolution allows us to accurately measure the velocity of the ionized and neutral gas through the H-alpha emission and Na D absorption, which traces the ionized medium and cold interstellar gas, respectively. We also present independent measurements with the VLT/X-shooter spectrograph which confirm our results. Results. For ESO 338-IG04, we measure no significant shift of neutral gas. The best fit velocity is -15 (16) km/s. For Haro 11, we see an outflow from knot B at 44 (13) km/s and infalling gas towards knot C with 32 (12) km/s. Based on the relative strength of the Na D absorption lines, we estimate low covering fractions of neutral gas (down to 10%) in all three cases. Conclusions. The Na D absorption likely occurs in dense clumps with higher column densities than where the bulk of the Ly-alpha scattering takes place. Still, we find no strong correlation between outflowing neutral gas and a high Lyman alpha escape fraction. The Lyman alpha photons from these two galaxies are therefore likely escaping due to a low column density and/or covering fraction.Comment: 9 pages, 3 figure

Realization and efficiency evaluation of a micro-photocatalytic cell prototype for real-time blood oxygenation

This paper was presented at the 2nd Micro and Nano Flows Conference (MNF2009), which was held at Brunel University, West London, UK. The conference was organised by Brunel University and supported by the Institution of Mechanical Engineers, IPEM, the Italian Union of Thermofluid dynamics, the Process Intensification Network, HEXAG - the Heat Exchange Action Group and the Institute of Mathematics and its Applications.A novel approach to blood oxygenation is presented. Microfluidic channels molded out of PDMS (using standard soft lithography techniques) work as photocatalytic cells, where the coupling of anatase titanium dioxide (TiO2) thin films and platinum electrodes, allow an electrically assisted photocatalytic reaction to produce dissolved oxygen gas from the water content of the flowing blood. The thin films were deposited onto quartz glass substrates at room temperature (300K) using reactive RF sputtering with a Ti metal target. The results of the current study, as a proof of concept, have shown that the device can generate oxygen at a rate of 4.06×10-3 mM O2/(cm2 min) and oxygenate venous blood to the oxygen saturation level of arterial blood