Persistence Redefined: Why Men Stay

The research addressed factors affecting degree completion for adult male students. This qualitative case study explored factors that contributed to the persistence of undergraduate adult male students and their perception of their role within the campus community. The research considered: 1) how adult male undergraduate students described their ability to persist until degree completion; 2) what factors contributed to persistence; 3) what types of social interactions enabled participants to persist; and 4) how adult male undergraduate students described their relationship to the campus community. Data were collected through interviews with nine nontraditional male graduates who earned a baccalaureate degree within the last five years. The findings of this study showed that adult male students persisted by demonstrating grit. The campus community was about what they could contribute and the support they needed to graduate. The significance of this study demonstrated the need to consider the role of institutional resources in supporting mutual engagement and degree completion for adult male students

Persistence Redefined: Why Men Stay

The research addressed factors affecting degree completion for adult male students. This qualitative case study explored factors that contributed to the persistence of undergraduate adult male students and their perception of their role within the campus community. The research considered: 1) how adult male undergraduate students described their ability to persist until degree completion; 2) what factors contributed to persistence; 3) what types of social interactions enabled participants to persist; and 4) how adult male undergraduate students described their relationship to the campus community. Data were collected through interviews with nine nontraditional male graduates who earned a baccalaureate degree within the last five years. The findings of this study showed that adult male students persisted by demonstrating grit. The campus community was about what they could contribute and the support they needed to graduate. The significance of this study demonstrated the need to consider the role of institutional resources in supporting mutual engagement and degree completion for adult male students

Carbon Dioxide Removal and Tradeable Put Options at Scale

Options are derivative contracts that give the purchaser the right to buy (call options) or sell (put options) a given underlying asset at a particular price at a future date. The purchaser of a put option may exercise the right to sell the asset to the issuer at any point in the future before the expiration of the contract. These rights may be contracted directly between two parties (i.e. over-the-counter), or may sold publicly on formal exchanges, such as the Chicago Board Options Exchange (CBOE). If the latter, they are called Tradeable Put Options (TPOs) because they can be bought and sold by third-parties via a secondary market. The World Bank has a Pilot Auction Facility for methane and carbon mediation which uses TPOs in carbon-relevant markets, giving producers (of e.g. forest restoration) a floor price for their product. This enables long-term producer planning. 
 
 We discuss the potentially broader use of these options contracts in Carbon Dioxide Removal (CDR) markets generally and at scale. We conclude that they can, if priced correctly, encourage rapid investment both in CDR technology and in operational capacity. TPOs could do this without creating same type of systemic risk associated with other instruments (e.g. long-dated futures). Nevertheless, the widespread use of such instruments potentially creates novel risks. These include the political risk of premature closure (conventionally rendered as 'counting your chickens before they are hatched'); and the economic risk of overpaying for carbon removal services. These instruments require careful structuring, and do not inoculate the CDR market against regulatory disruption, or political pressure. Accordingly, we note the potential for the development of TPO markets in CDR, but we urge caution in respect of identified risks

SpMyb functions as an intramodular repressor to regulate spatial expression of CyIIIa in sea urchin embryos

The CyIIIa actin gene of Strongylocentrotus purpuratus is transcribed exclusively in the embryonic aboral ectoderm, under the control of 2.3 kb cis-regulatory domain that contains a proximal module that controls expression in early embryogenesis, and a middle module that controls expression in later embryogenesis. Previous studies demonstrated that the SpRunt-1 target site within the middle module is required for the sharp increase in CyIIIa transcription which accompanies differentiation of the aboral ectoderm, and that a negative regulatory region near the SpRunt-1 target site is required to prevent ectopic transcription in the oral ectoderm and skeletogenic mesenchyme. This negative regulatory region contains a consensus binding site for the myb family of transcription factors. In vitro DNA-binding experiments reveal that a protein in blastula-stage nuclei interacts specifically with the myb target site. Gene transfer experiments utilizing CyIIIa reporter constructs containing oligonucleotide substitutions indicate that this site is both necessary and sufficient to prevent ectopic expression of CyIIIa. Synthetic oligonucleotides containing the myb target site were used to purify a protein from sea urchin embryo nuclear extracts by affinity chromatography. This protein is immunoprecipitated by antibodies specific to the evolutionarily conserved myb domain, and amino acid sequences obtained from the purified protein were found to be identical to sequences within the myb domain. Sequence information was used to obtain cDNA clones of SpMyb, the S. purpuratus member of the myb family of transcription factors. Through interactions within the middle module, SpMyb functions to repress activation of CyIIIa in the oral ectoderm and skeletogenic mesenchyme

Local symmetry properties of pure 3-qubit states

Entanglement types of pure states of 3 qubits are classified by means of their stabilisers in the group of local unitary operations. It is shown that the stabiliser is generically discrete, and that a larger stabiliser indicates a stationary value for some local invariant. We describe all the exceptional states with enlarged stabilisers.Comment: 32 pages, 5 encapsulated PostScript files for 3 figures. Published version, with minor correction

On local invariants of pure three-qubit states

We study invariants of three-qubit states under local unitary transformations, i.e. functions on the space of entanglement types, which is known to have dimension 6. We show that there is no set of six independent polynomial invariants of degree less than or equal to 6, and find such a set with maximum degree 8. We describe an intrinsic definition of a canonical state on each orbit, and discuss the (non-polynomial) invariants associated with it.Comment: LateX, 13 pages. Minor typoes corrected. Published versio

Processing of synthetic aperture radar data as applied to the characterization of localized deformation features

Title from PDF of title page (University of Missouri--Columbia, viewed on September 13, 2010).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Dissertation advisor: Dr. J. Erik Loehr.Vita.Ph. D. University of Missouri--Columbia 2009.Satellite-based Interferometric Synthetic Aperture Radar (InSAR) has been used by the geoscience community for many years to obtain ground deformation measurements of large-scale spatial features. Researchers have also begun applying InSAR to detect small-scale spatial features associated with geotechnical engineering applications. However, there is a significant lack of understanding on how to obtain ground deformation measurements associated with civil infrastructure because of the generally large spatial resolution of the imagery as compared with the limited spatial scale of the deformation features. In this study, InSAR processing techniques were evaluated for two demonstration sites to enhance the understanding of detection of small-scale spatial features. The sites consist of a predominately urban site (Los Angeles, California) and a predominately rural site (outside of Mosul, Iraq). Localized deformation features were identified at both of these sites using InSAR processing techniques recommended in this research InSAR coverage allows for the detection of small movements (<1 cm) covering small spatial extents (<100 meters) by scanning large areas (100 km²) instead of or in addition to current surveying practices which provide spatially limited point measurements. This coverage and the ability to conduct deformation investigations on civil infrastructure using archived InSAR data make the use of InSAR well suited for geotechnical engineering applications.Includes bibliographical reference

Ketamine coadministration attenuates morphine tolerance and leads to increased brain concentrations of both drugs in the rat

Background and Purpose The effects of ketamine in attenuating morphine tolerance have been suggested to result from a pharmacodynamic interaction. We studied whether ketamine might increase brain morphine concentrations in acute coadministration, in morphine tolerance and morphine withdrawal. Experimental Approach Morphine minipumps (6mg center dot day(-1)) induced tolerance during 5 days in Sprague-Dawley rats, after which s.c. ketamine (10mg center dot kg(-1)) was administered. Tail flick, hot plate and rotarod tests were used for behavioural testing. Serum levels and whole tissue brain and liver concentrations of morphine, morphine-3-glucuronide, ketamine and norketamine were measured using HPLC-tandem mass spectrometry. Key Results In morphine-naive rats, ketamine caused no antinociception whereas in morphine-tolerant rats there was significant antinociception (57% maximum possible effect in the tail flick test 90min after administration) lasting up to 150min. In the brain of morphine-tolerant ketamine-treated rats, the morphine, ketamine and norketamine concentrations were 2.1-, 1.4- and 3.4-fold, respectively, compared with the rats treated with morphine or ketamine only. In the liver of morphine-tolerant ketamine-treated rats, ketamine concentration was sixfold compared with morphine-naive rats. After a 2 day morphine withdrawal period, smaller but parallel concentration changes were observed. In acute coadministration, ketamine increased the brain morphine concentration by 20%, but no increase in ketamine concentrations or increased antinociception was observed. Conclusions and Implications The ability of ketamine to induce antinociception in rats made tolerant to morphine may also be due to increased brain concentrations of morphine, ketamine and norketamine. The relevance of these findings needs to be assessed in humans.Peer reviewe

From A to Z: Using Alphabet Books as an instructional Tool with Older Readers

Alphabet books provide a literature source for teachers to use in the classroom that focuses on a common sequence of textual organization which upper elementary and middle school students have known since they were young children. These students most likely had in their repertoire of beginning to read activities, alphabet books using common symbols to match the letters such as A is for apple, B is for bear, C is for cat. The objects were selected to match the true sound of the letter with a single or small number of illustrations to demonstrate the concept. The alphabet book addresses the 26 letters in picture book format with typically 24 to 48 pages, illustrations on double pages, and brief text (Kormanski and Stevens, 1993)