Showing papers by "University of North Texas published in 2011"
TL;DR: In this paper, the authors used density functional theory (DFT) to demonstrate that the oxygen reduction reaction (ORR) on N-doped graphene is a direct fourelectron pathway, which is consistent with the experimental observations.
Abstract: Graphene and its derivatives are attractive for electrocatalytical application in fuel cells because of their unique structures and electronic properties. The electrocatalytical mechanism of nitrogen doped graphene in acidic environment was studied by using density functional theory (DFT). The simulations demonstrate that the oxygen reduction reaction (ORR) on N-doped graphene is a direct four-electron pathway, which is consistent with the experimental observations. The energy calculated for each ORR step shows that the ORR can spontaneously occur on the N-graphene. The active catalytical sites on single nitrogen doped graphene are identified, which have either high positive spin density or high positive atomic charge density. The nitrogen doping introduces asymmetry spin density and atomic charge density, making it possible for N-graphene to show high electroncatalytic activities for the ORR.
1,230 citations
Indiana University1, University of Notre Dame2, Utah State University3, University of New Hampshire4, University of California, Santa Barbara5, University of Tokyo6, United States Department of Energy7, Ludwig Maximilian University of Munich8, J. Craig Venter Institute9, National Institutes of Health10, University of Illinois at Urbana–Champaign11, Hebrew University of Jerusalem12, University of North Texas13, Harvard University14, Research Institute of Molecular Pathology15, University of Geneva16, Oregon State University17, Utrecht University18, University of California, Davis19, Hoffmann-La Roche20, University of Iowa21, University of Strasbourg22, University of Washington23, University of Texas at Arlington24, University of California, Santa Cruz25, Life Technologies26, New York University27, University of Guelph28, Imperial College London29, University of California, Berkeley30
TL;DR: The Daphnia genome reveals a multitude of genes and shows adaptation through gene family expansions, and the coexpansion of gene families interacting within metabolic pathways suggests that the maintenance of duplicated genes is not random.
Abstract: We describe the draft genome of the microcrustacean Daphnia pulex, which is only 200 megabases and contains at least 30,907 genes. The high gene count is a consequence of an elevated rate of gene duplication resulting in tandem gene clusters. More than a third of Daphnia's genes have no detectable homologs in any other available proteome, and the most amplified gene families are specific to the Daphnia lineage. The coexpansion of gene families interacting within metabolic pathways suggests that the maintenance of duplicated genes is not random, and the analysis of gene expression under different environmental conditions reveals that numerous paralogs acquire divergent expression patterns soon after duplication. Daphnia-specific genes, including many additional loci within sequenced regions that are otherwise devoid of annotations, are the most responsive genes to ecological challenges.
1,204 citations
University of North Texas1, East Malling Research Station2, Plant & Food Research3, Oregon State University4, University of Maryland, College Park5, Indiana University6, Virginia Tech7, Georgia Institute of Technology8, University of New Hampshire9, United States Department of Agriculture10, Hoffmann-La Roche11, University of Auckland12, Rutgers University13, University of the Western Cape14, University of Florida15, University of Chile16, Andrés Bello National University17, Weizmann Institute of Science18, University of Pittsburgh19, University of Georgia20, Technische Universität München21, University of Illinois at Urbana–Champaign22, Institut national de la recherche agronomique23
TL;DR: New phylogenetic analysis of 154 protein-coding genes suggests that assignment of Populus to Malvidae, rather than Fabidae, is warranted, and macrosyntenic relationships between Fragaria and Prunus predict a hypothetical ancestral Rosaceae genome that had nine chromosomes.
Abstract: The woodland strawberry, Fragaria vesca (2n = 2x = 14), is a versatile experimental plant system. This diminutive herbaceous perennial has a small genome (240 Mb), is amenable to genetic transformation and shares substantial sequence identity with the cultivated strawberry (Fragaria × ananassa) and other economically important rosaceous plants. Here we report the draft F. vesca genome, which was sequenced to ×39 coverage using second-generation technology, assembled de novo and then anchored to the genetic linkage map into seven pseudochromosomes. This diploid strawberry sequence lacks the large genome duplications seen in other rosids. Gene prediction modeling identified 34,809 genes, with most being supported by transcriptome mapping. Genes critical to valuable horticultural traits including flavor, nutritional value and flowering time were identified. Macrosyntenic relationships between Fragaria and Prunus predict a hypothetical ancestral Rosaceae genome that had nine chromosomes. New phylogenetic analysis of 154 protein-coding genes suggests that assignment of Populus to Malvidae, rather than Fabidae, is warranted.
1,085 citations
TL;DR: The ability of RBOHs to integrate calcium signaling and protein phosphorylation with ROS production, coupled with genetic studies demonstrating their involvement in many different biological processes in cells, places RBOhs at the center of the ROS network of cells and demonstrate their important function in plants.
782 citations
Vanderbilt University1, Centers for Disease Control and Prevention2, George Washington University3, Johns Hopkins University4, Duke University5, McGill University6, University of North Texas7, University of Texas Health Science Center at San Antonio8, Federal University of Rio de Janeiro9, Boston University10
TL;DR: The use of rifapentine plus isoniazid for 3 months was as effective as 9 months of isoniaZid alone in preventing tuberculosis and had a higher treatment-completion rate.
Abstract: In the modified intention-to-treat analysis, tuberculosis developed in 7 of 3986 subjects in the combination-therapy group (cumulative rate, 0.19%) and in 15 of 3745 subjects in the isoniazid-only group (cumulative rate, 0.43%), for a difference of 0.24 percentage points. Rates of treatment completion were 82.1% in the combination-therapy group and 69.0% in the isoniazid-only group (P<0.001). Rates of permanent drug discontinuation owing to an adverse event were 4.9% in the combination-therapy group and 3.7% in the isoniazid-only group (P = 0.009). Rates of investigator-assessed drug-related hepatotoxicity were 0.4% and 2.7%, respectively (P<0.001). Conclusions The use of rifapentine plus isoniazid for 3 months was as effective as 9 months of isoniazid alone in preventing tuberculosis and had a higher treatment-completion rate. Long-term safety monitoring will be important. (Funded by the Centers for Disease Control and Prevention; PREVENT TB ClinicalTrials.gov number, NCT00023452.)
756 citations
Pennsylvania State University1, Space Science Institute2, Pontifical Catholic University of Chile3, Goddard Space Flight Center4, Johns Hopkins University5, Durham University6, Max Planck Society7, INAF8, University of Cambridge9, Space Telescope Science Institute10, University of Science and Technology of China11, European Southern Observatory12, Leiden University13, University of North Texas14, Institute for the Physics and Mathematics of the Universe15, University of Bologna16
TL;DR: In this article, the authors presented a source catalog for the 4Ms Chandra Deep Field-South (CDF-S) survey, which is the deepest Chandra survey to date and covers an area of 464.5 arcmin2.
Abstract: We present source catalogs for the 4 Ms Chandra Deep Field-South (CDF-S), which is the deepest Chandra survey to date and covers an area of 464.5 arcmin2. We provide a main Chandra source catalog, which contains 740 X-ray sources that are detected with WAVDETECT at a false-positive probability threshold of 10–5 in at least one of three X-ray bands (0.5-8 keV, full band; 0.5-2 keV, soft band; and 2-8 keV, hard band) and also satisfy a binomial-probability source-selection criterion of P 75% of the main-catalog sources are active galactic nuclei (AGNs); of the 300 new main-catalog sources, about 35% are likely normal and starburst galaxies, reflecting the rise of normal and starburst galaxies at the very faint flux levels uniquely accessible to the 4 Ms CDF-S. Near the center of the 4 Ms CDF-S (i.e., within an off-axis angle of 3'), the observed AGN and galaxy source densities have reached 9800+1300 – 1100 deg–2 and 6900+1100 – 900 deg–2, respectively. Simulations show that our main catalog is highly reliable and is reasonably complete. The mean backgrounds (corrected for vignetting and exposure-time variations) are 0.063 and 0.178 counts Ms–1 pixel–1 (for a pixel size of 0492) for the soft and hard bands, respectively; the majority of the pixels have zero background counts. The 4 Ms CDF-S reaches on-axis flux limits of 3.2 × 10–17, 9.1 × 10–18, and 5.5 × 10–17 erg cm–2 s–1 for the full, soft, and hard bands, respectively. An increase in the CDF-S exposure time by a factor of 2-2.5 would provide further significant gains and probe key unexplored discovery space.
716 citations
TL;DR: Patients in R/S psychotherapies showed greater improvement than those in alternate secular psychotherAPies both on psychological and spiritual outcomes andReligiously accommodated treatments outperformed dismantling-design alternative treatments on spiritual but not on psychological outcomes.
Abstract: Many clients highly value religious and spiritual (R/S) commitments, and many psychotherapists have accommodated secular treatments to R/S perspectives. We meta-analyzed 51 samples from 46 studies (N = 3,290) that examined the outcomes of religious accommodative therapies and nonreligious spirituality therapies. Comparisons on psychological and spiritual outcomes were made to a control condition, an alternate treatment, or a subset of those studies that used a dismantling design (similar in theory and duration of treatment, but including religious contents). Patients in R/S psychotherapies showed greater improvement than those in alternate secular psychotherapies both on psychological (d =.26) and on spiritual (d = .41) outcomes. Religiously accommodated treatments outperformed dismantling-design alternative treatments on spiritual (d = .33) but not on psychological outcomes. Clinical examples are provided and therapeutic practices are recommended.
670 citations
TL;DR: A model of content-related, structural, and socialization factors that affect users' attitudes toward social-networking advertising is proposed and empirical support for these propositions is lacking.
Abstract: Social-networking sites (SNS) such as Facebook and Twitter are growing in both popularity and number of users For advertisers and the sites themselves, it is crucial that users accept advertising as a component of the SNS Anecdotal evidence indicates that social-networking advertising (SNA) can be effective when users accept it, but the perception of excessive commercialization may lead to user abandonment Empirical support for these propositions, however, is lacking Based on media uses and gratification theory, the authors propose and empirically test a model of content-related, structural, and socialization factors that affect users9 attitudes toward SNA
586 citations
TL;DR: Correlation consistent basis sets for the alkali and alkaline earth metals Li, Be, Na, and Mg have been developed, including the valence (cc-pVnZ), augmented valence and weighted core-valence (c-pwCVnZ) basis sets as discussed by the authors.
Abstract: Correlation consistent basis sets of double-ζ through quintuple-ζ quality for the alkali and alkaline earth metals Li, Be, Na, and Mg have been developed, including the valence (cc-pVnZ), augmented valence (aug-cc-pVnZ), core-valence (cc-pCVnZ), and weighted core-valence (cc-pwCVnZ) basis sets. The basis sets are also re-contracted for Douglas–Kroll scalar relativistic calculations and are found to be superior to non-relativistic basis sets in recovering scalar relativistic effects. CCSD(T) computations have been performed with these basis sets, and a series of properties have been examined, including atomic ionization potentials and electron affinities, optimized molecular geometries, harmonic vibrational frequencies, atomization energies, and enthalpies of formation for the molecules Li2, LiF, BeO, BeF, BeH2, BeF2, Na2, NaF, MgO, MgF, MgH2, and MgF2.
496 citations
TL;DR: Results were congruent with the previous meta-analytic findings indicating that carriers of ApoE allele 4 (ɛ4) perform significantly worse on measures of episodic memory, executive functioning, and overall global cognitive ability and indicate that increases in age result in significantly larger differences.
400 citations
TL;DR: The authors explored the effect of exposure to entrepreneurial role models on entrepreneurial career intention, and found that role models have a significant and positive impact on intention, that gender moderated the effects, and that self-efficacy mediated it.
Abstract: This paper addresses the effects of role models and self-efficacy on forming career intentions, and whether the effects vary by gender and process. Focusing on entrepreneurship as a career choice, we explored (a) the effect of exposure to entrepreneurial role models on entrepreneurial career intention; (b) the difference in effects between men and women; and (c) the mediating functionality of self-efficacy. Results indicate that role models have a significant and positive impact on intention, that gender moderated the effects, and that self-efficacy mediated it. A moderated mediation relationship was observed such that, for women, role models had stronger influence on self-efficacy, which, in turn, influenced entrepreneurial career intention. Results are discussed in terms of implications for theory and practice.
TL;DR: Spin-component scaled double hybrids including dispersion correction were optimized for many exchange and correlation functionals and DSD-PBEP86 emerged as a very accurate and robust method approaching the accuracy of composite ab initio methods at a fraction of their computational cost.
Abstract: Spin-component scaled double hybrids including dispersion correction were optimized for many exchange and correlation functionals. Even DSD-LDA performs surprisingly well. DSD-PBEP86 emerged as a very accurate and robust method, approaching the accuracy of composite ab initio methods at a fraction of their computational cost.
TL;DR: The results suggest great promise for FMOFs in applications such as removal of organic pollutants from oil spills or ambient humid air, hydrocarbon storage and transportation, water purification, etc. under practical working conditions.
Abstract: We demonstrate that fluorous metal–organic frameworks (FMOFs) are highly hydrophobic porous materials with a high capacity and affinity to C6–C8 hydrocarbons of oil components. FMOF-1 exhibits reversible adsorption with a high capacity for n-hexane, cyclohexane, benzene, toluene, and p-xylene, with no detectable water adsorption even at near 100% relative humidity, drastically outperforming activated carbon and zeolite porous materials. FMOF-2, obtained from annealing FMOF-1, shows enlarged cages and channels with double toluene adsorption vs FMOF-1 based on crystal structures. The results suggest great promise for FMOFs in applications such as removal of organic pollutants from oil spills or ambient humid air, hydrocarbon storage and transportation, water purification, etc. under practical working conditions.
14 Nov 2011
TL;DR: This paper addresses the task of multimodal sentiment analysis, and conducts proof-of-concept experiments that demonstrate that a joint model that integrates visual, audio, and textual features can be effectively used to identify sentiment in Web videos.
Abstract: With more than 10,000 new videos posted online every day on social websites such as YouTube and Facebook, the internet is becoming an almost infinite source of information. One crucial challenge for the coming decade is to be able to harvest relevant information from this constant flow of multimodal data. This paper addresses the task of multimodal sentiment analysis, and conducts proof-of-concept experiments that demonstrate that a joint model that integrates visual, audio, and textual features can be effectively used to identify sentiment in Web videos. This paper makes three important contributions. First, it addresses for the first time the task of tri-modal sentiment analysis, and shows that it is a feasible task that can benefit from the joint exploitation of visual, audio and textual modalities. Second, it identifies a subset of audio-visual features relevant to sentiment analysis and present guidelines on how to integrate these features. Finally, it introduces a new dataset consisting of real online data, which will be useful for future research in this area.
TL;DR: The W4-11 dataset as discussed by the authors provides a broad spectrum of bonding situations and multireference character, and as such is an excellent, quasi-automated benchmark for parametrization and validation of more approximate methods (such as DFT functionals and composite methods).
TL;DR: The resulting measure, the Multidimensional Experiential Avoidance Questionnaire, or MEAQ, exhibited good internal consistency, was substantially associated with other measures of avoidance, and demonstrated greater discrimination vis-à-vis neuroticism relative to preexisting measures of EA.
Abstract: Experiential avoidance (EA) has been conceptualized as the tendency to avoid negative internal experiences and is an important concept in numerous conceptualizations of psychopathology as well as theories of psychotherapy. Existing measures of EA have either been narrowly defined or demonstrated unsatisfactory internal consistency and/or evidence of poor discriminant validity vis-a`-vis neuroticism. To help address these problems, we developed a reliable self-report questionnaire assessing a broad range of EA content that was distinguishable from higher order personality traits. An initial pool of 170 items was administered to a sample of undergraduates (N 312) to help evaluate individual items and establish a structure via exploratory factor analyses. A revised set of items was then administered to another sample of undergraduates (N 314) and a sample of psychiatric outpatients (N 201). A 2nd round of item evaluation was performed, resulting in a final 62-item measure consisting of 6 subscales. Cross-validation data were gathered in 3 new, independent samples (students, N 363; patients, N 265; community adults, N 215). The resulting measure (the Multidimensional Experiential Avoidance Questionnaire, or MEAQ) exhibited good internal consistency, was substantially associated with other measures of avoidance, and demonstrated greater discrimination vis-a`-vis neuroticism relative to preexisting measures of EA. Furthermore, the MEAQ was broadly associated with psychopathology and quality of life, even after controlling for the effects of neuroticism.
TL;DR: A doubly interpenetrated semiconducting MOF Zn(4)O(2,6-NDC)(3)(DMF)(1.5)(H(2)O)(0.5)·4DMF·7.5O (UTSA-38) of a cubic net has been constructed, which exhibits photocatalytic activity for the degradation of methyl orange in aqueous solution.
TL;DR: The findings suggest that many PDs can be placed in Axis I with related clinical disorders, and that unipolar depression may be better placed with anxiety disorders than with bipolar disorders.
Abstract: Context: Patterns of comorbidity among mental disordersarethoughttoreflectthenaturalorganizationofmental illness. Factor analysis can be used to investigate this structure and construct a quantitative classification system. Prior studies identified 3 dimensions of psychopathology: internalizing, externalizing, and thought disorder. However, research has largely relied on common disorders and community samples. Consequently, it is unclear how well the identified organization applies to patients and how other major disorders fit into it.
TL;DR: The benefits of using PLS are explained and the algorithm works to derive estimates for the measurement and structural models and guidelines in the development of research models, analysis of the data, and the interpretation of these results are offered.
TL;DR: The first DNA sequencing-based survey of bacterial population at the conjunctiva have revealed an unexpectedly diverse microbial community that included commensal, environmental, and opportunistic pathogenic bacteria.
Abstract: PURPOSE. Ocular surface (OS) microbiota contributes to infectious and autoimmune diseases of the eye. Comprehensive analysis of microbial diversity at the OS has been impossible because of the limitations of conventional cultivation techniques. This pilot study aimed to explore true diversity of human OS microbiota using DNA sequencing-based detection and identification of bacteria. METHODS. Composition of the bacterial community was characterized using deep sequencing of the 16S rRNA gene amplicon libraries generated from total conjunctival swab DNA. The DNA sequences were classified and the diversity parameters measured using bioinformatics software ESPRIT and MOTHUR and tools available through the Ribosomal Database Project-II (RDP-II). RESULTS. Deep sequencing of conjunctival rDNA from four subjects yielded a total of 115,003 quality DNA reads, corresponding to 221 species-level phylotypes per subject. The combined bacterial community classified into 5 phyla and 59 distinct genera. However, 31% of all DNA reads belonged to unclassified or novel bacteria. The intersubject variability of individual OS microbiomes was very significant. Regardless, 12 genera—Pseudomonas, Propionibacterium, Bradyrhizobium, Corynebacterium, Acinetobacter, Brevundimonas, Staphylococci, Aquabacterium, Sphingomonas, Streptococcus, Streptophyta, and Methylobacterium—were ubiquitous among the analyzed cohort and represented the putative “core” of conjunctival microbiota. The other 47 genera accounted for 4% of the classified portion of this microbiome. Unexpectedly, healthy conjunctiva contained many genera that are commonly identified as ocular surface pathogens. CONCLUSIONS. The first DNA sequencing-based survey of bacterial population at the conjunctiva have revealed an unexpect
TL;DR: In this paper, a conceptual model using Hofstede's cultural dimensions and technology acceptance model 3 is presented to examine the cultural influence on social networking and its influence on purchase intention.
TL;DR: Pah1p promotes lipid droplet assembly independent of its role in triacylglycerol synthesis and may have implications for drug discovery and drug design.
Abstract: Lipins are phosphatidate phosphatases that generate diacylglycerol (DAG). In this study, we report that yeast lipin, Pah1p, controls the formation of cytosolic lipid droplets. Disruption of PAH1 resulted in a 63% decrease in droplet number, although total neutral lipid levels did not change. This was accompanied by an accumulation of neutral lipids in the endoplasmic reticulum (ER). The droplet biogenesis defect was not a result of alterations in neutral lipid ratios. No droplets were visible in the absence of both PAH1 and steryl acyltransferases when grown in glucose medium, even though the strain produces as much triacylglycerol as wild type. The requirement of PAH1 for normal droplet formation can be bypassed by a knockout of DGK1. Nem1p, the activator of Pah1p, localizes to a single punctum per cell on the ER that is usually next to a droplet, suggesting that it is a site of droplet assembly. Overall, this study provides strong evidence that DAG generated by Pah1p is important for droplet biogenesis.
TL;DR: A review of recent and older studies on sucrose flux across membranes with principles of whole-plant carbon partitioning can be found in this paper, where the authors integrate the results of these studies with principles from whole plant carbon partition.
TL;DR: The secure age for D manisi's first occupations reveals that Eurasia was probably occupied before Homo erectus appears in the East African fossil record, and shows that the southern Caucasus was occupied repeatedly before Dmanisi's hominin fossil assemblage accumulated.
Abstract: The early Pleistocene colonization of temperate Eurasia by Homo erectus was not only a significant biogeographic event but also a major evolutionary threshold. Dmanisi's rich collection of hominin fossils, revealing a population that was small-brained with both primitive and derived skeletal traits, has been dated to the earliest Upper Matuyama chron (ca. 1.77 Ma). Here we present archaeological and geologic evidence that push back Dmanisi's first occupations to shortly after 1.85 Ma and document repeated use of the site over the last half of the Olduvai subchron, 1.85–1.78 Ma. These discoveries show that the southern Caucasus was occupied repeatedly before Dmanisi's hominin fossil assemblage accumulated, strengthening the probability that this was part of a core area for the colonization of Eurasia. The secure age for Dmanisi's first occupations reveals that Eurasia was probably occupied before Homo erectus appears in the East African fossil record.
TL;DR: In this article, the authors analyze factors determining external support for insurgent groups from a principal-agent perspective, focusing on both the supply side, that is, when states are willing to support insurgent groups in other states, and the demand side, when groups are willing or unwilling to accept such support, with the conditions that this may entail.
Abstract: Many rebel organizations receive significant assistance from external governments, yet the reasons why some rebels attract foreign support while others do not is poorly understood+ We analyze factors determining external support for insurgent groups from a principal-agent perspective+ We focus on both the supply side, that is, when states are willing to support insurgent groups in other states, and the demand side, that is, when groups are willing to accept such support, with the conditions that this may entail+ We test our hypotheses using new disaggregated data on insurgent groups and foreign support+ Our results indicate that external rebel sup- port is influenced by characteristics of the rebel group as well as linkages between rebel groups and actors in other countries+ More specifically, we find that external support is more likely for moderately strong groups where support is more likely to be offered and accepted, in the presence of transnational constituencies, international rivalries, and when the government receives foreign support+
TL;DR: A model of relational humility that conceptualizes humility as a personality judgment is described and initial evidence for the theoretical model is offered.
Abstract: The study of humility has progressed slowly due to measurement problems. We describe a model of relational humility that conceptualizes humility as a personality judgment. In this set of 5 studies, we developed the 16-item Relational Humility Scale (RHS) and offered initial evidence for the theoretical model. In Study 1 (N = 300), we developed the RHS and its subscales--Global Humility, Superiority, and Accurate View of Self. In Study 2, we confirmed the factor structure of the scale in an independent sample (N = 196). In Study 3, we provided initial evidence supporting construct validity using an experimental design (N = 200). In Study 4 (N = 150), we provided additional evidence of construct validity by examining the relationships between humility and empathy, forgiveness, and other virtues. In Study 5 (N = 163), we adduced evidence of discriminant and incremental validity of the RHS compared with the Honesty-Humility subscale of the HEXACO-PI (Lee & Ashton, 2004).
TL;DR: The developed magnetic maps can complement existing visual maps for location tracking and navigation of autonomous robots indoors and are particularly useful during limited visual feedback in poor lighting conditions.
Abstract: Magnetic field fluctuations and anomalies inside buildings tend to have a great effect on the compass, which is one of the simplest navigation devices. Alternative navigation requires landmark identification, so those landmarks can be used as guideposts in assisting individuals. By employing a mobile phone with built_in magnetometer, an extensive data set of 2000 measurements was collected. Using these fields, we identify landmarks and guideposts and create magnetic maps for multiple corridors of a floor in a building. Different phones are used at different sensitivity rates, which effectively portray similar results. Magnetic signatures are used for identifying locations and rooms and are independent of the person, the phone, and the sensitivity of the sensor being used. Magnetic field behavior is demonstrated and compared with theoretical distributions of these fields. The developed magnetic maps can complement existing visual maps for location tracking and navigation of autonomous robots indoors. These maps are particularly useful during limited visual feedback in poor lighting conditions. Moreover, building designers could include this landmark and guidepost information when developing the architecture of a building, which could in turn help people or robots navigate during disasters and emergency evacuations.
Proceedings Article•
19 Jun 2011TL;DR: This work combines several graph alignment features with lexical semantic similarity measures using machine learning techniques and shows that the student answers can be more accurately graded than if the semantic measures were used in isolation.
Abstract: In this work we address the task of computerassisted assessment of short student answers. We combine several graph alignment features with lexical semantic similarity measures using machine learning techniques and show that the student answers can be more accurately graded than if the semantic measures were used in isolation. We also present a first attempt to align the dependency graphs of the student and the instructor answers in order to make use of a structural component in the automatic grading of student answers.
TL;DR: As expected, peer liking and TSRQ exhibited bidirectional effects across the three years and the effect of both T SRQ and the peer relatedness dimensions on academic self efficacy was found to be significant.
TL;DR: A family attachment network model of military families during deployment and reintegration that is grounded in attachment theory and family systems theory is described, which will inform future research and intervention efforts with service members and their families.
Abstract: Deployment separation constitutes a significant stressor for U.S. military men and women and their families. Many military personnel return home struggling with physical and/or psychological injuries that challenge their ability to reintegrate and contribute to marital problems, family dysfunction, and emotional or behavioral disturbance in spouses and children. Yet research examining the psychological health and functioning of military families is scarce and rarely driven by developmental theory. The primary purpose of this theoretical paper is to describe a family attachment network model of military families during deployment and reintegration that is grounded in attachment theory and family systems theory. This integrative perspective provides a solid empirical foundation and a comprehensive account of individual and family risk and resilience during military-related separations and reunions. The proposed family attachment network model will inform future research and intervention efforts with service members and their families.