194 research outputs found
Lessons from the Draft Horse Industry in East Texas
The purpose of the study reported here was to determine and understand the variables responsible for the revival of the draft horse industry in East Texas. The draft horse industry can provide viable employment for rural entrepreneurs. The authors suggest universities and Extension rethink their traditional roles of supporting and providing resources for rural entrepreneurs engaged in agricultural enterprises that utilize relic technologies
Study Abroad and College Students of the African Diaspora: Attitudes, Access and Barriers
This qualitative study examined the attitudes, preferences, and barriers to participation experienced by African American students attempting to participate in study abroad programs. A literature review indicates that African American students are grossly underrepresented in global education opportunities when compared with their overall enrollment numbers. Study abroad has been named as a valuable (both personally and academically) enriching experience granting competitive edges in postgraduate and professional endeavors in a globalized world. Twenty participants from purposively selected universities across the United States participated in a short-answer survey of either twelve or seven questions, depending on if they participated in a study abroad program or not. The results suggest that finances, institutional factors, and individual differences are significant factors in determining if an African American student will study abroad. Future studies tracking Black studentsâ active intent to study abroad, as well as those that do study abroad, can provide more insight to universities as they attempt to increase this group of studentsâ participations.Michelle Reneeâ Harris - [email protected] W. Hynes - [email protected] Reneeâ Harris - MEd is the Global Programs Coordinator for all programs affiliated with the African Bioethics Consortium at the Johns Hopkins Berman Institute of Bioethics. Her primary research/career focuses are international education program management, with special focus on minority, low-income, 1st generation, and other underrepresented groupsâ participation in in global education opportunities.James W. Hynes - Corresponding author. PhD. is an Associate Professor in the School of Teaching and Learning at Sam Houston State University in Huntsville, Texas. His research focus is primarily centered on two topics. The first is sustainable development in agriculture and education in developing countries located primarily in sub-Saharan Africa. The second focus supports the first - right sizing animal traction agricultural implements developed and used by U.S. Amish farmers. This adaptation allows farmers in developing countries, whose primary source of power is either human or animal, to increase their food production and quality of life without the use of combustion engines.Michelle Reneeâ Harris - Sam Houston State UniversityJames W. Hynes - Sam Houston State UniversityArmstrong, G. K. (1984). Life after study abroad: A survey of undergraduate academic and career choices. The Modern Language Journal, 68(1), 1-6.Barbuto Jr., J. E., Beenen, G., & Tran, H. (2015). The role of core self-evaluation, ethnocentrism, and cultural intelligence in study abroad success. The Journal of Management Education, 13, 268-277.Brux, J. M., & Fry, B. (2010). Multicultural students in study abroad: Their interests, their issues, and their constraints. Journal of Studies in International Education, 14(5), 508-227.Carlson, J. S., & Widaman, K. F. (1998). The effects of study abroad during college on attitudes toward other cultures. International Journal of Intercultural Relations. https://doi.org/10.1016/0147-1767(88)90003-XChieffo, L., & Griffiths, L. (2004). Large-scale assessment of student attitudes after a short-term study abroad program. Frontiers: The Interdisciplinary Journal of Study Abroad, 10, 165-177.Dwyer, M. M. (2004). More is better: The impact of study abroad program duration. Frontiers: The Interdisciplinary Journal of Study Abroad, 10, 151-163.Dwyer, M. M., & Peters, C. K. (2004). The Benefits of study abroad: New study confirms significant gains. Retrieved from Transitions Abroad: https://www.transitionsabroad.com/publications/magazine/0403/benefits_study_abroad.shtmlEducators, N. A. (2018). Trends in U.S, study abroad. Retrieved from NAFSA: https://www.nafsa.org/Policy_and_Advocacy/Policy_Resources/Policy_Trends_and_Data/Trends_in_U_S__Study_Abroad/Engberg, M. E. (2013). The influence of study away experiences on global perspective-taking. Journal of College Student Development, 54(5), 466-480.Giedt, T., Gokcek, G., & Ghosh, J. (2015). International education in the 21st Century: The importance of faculty in developing study abroad research opportunities. The Interdisciplinary Journal of Study Abroad, 26, 167-186.Gieser, J. D. (2015). A sociocultural investigation of identity: How students navigate the study abroad experience. Journal of College Student Development, 56(6), 637-643.Goldstein, S. B., & Kim, R. I. (2006). Predictors of US college studentsâ participation in study abroad programs: A longitudinal study. International Journal of Intercultural Relations, 30(4), 507-521.Kadmar, N., & Lewis, T. (2015). Deriving long-term benefits from short-term study-abroad programs. The Journal of Management and Engineering Integration, 7(2), 1-11.Kowarski, L. (2010). Colleges help students to translate the benefits of study abroad. Retrieved from The Chronicle of Higher Education: https://www.chronicle.com/article/Colleges-Help-Students-to/123653Lee, C. S., Therriault, D. J., & Linderholm, T. (2012). On the cognitive benefits of cultural experience: Exploring the relationship between study abroad and creative thinking. Applied Cognitive Psychology, 26(5), 768-778.Lee, J., & Green, Q. (2016). Unique opportunities: Influence of study abroad on black students. The Interdisciplinary Journal of Study Abroad, 28, 62-77.Lewis, W. (2016). Study abroad influencing factors: An investigation of socio-economic status, cultural, and personal factors. Ursidae: The Undergraduate Research Journal of the University of Northern Colorado, 5(3), 58-73.Lu, C., Reddick, R., Dean, D., & Pecero, V. (2015). Coloring up studying abroad: Exploring black studentsâ decision to study in China. Journal of Student Affairs Research and Practice, 52(4), 440-451.Luo, J., & Jamieson-Drake, D. (2015). Predictors of study abroad intent, participation, and college outcomes. Research in Higher Education, 56(1), 29-56.MâBalia, T. (2013). The problematization of racial/ethnic minority student participation in U.S. study abroad. Applied Linguistics Review, 4(2), 365-390.Norris, E. M., & Gillespie, J. (2008). How study abroad shapes global careers: Evidence from the United States. Journal of Studies in International Education, 13(3), 382-397.Paige, R. M., Fry, G. W., Stallman, E. M., Josic, J., & Jon, J.-E. (2009). Study abroad for global engagement: The long-term impact of mobility experiences. Intercultural Education,
20((sup1)), S29-S44.Petzold, K., & Peter, T. (2015). The social norm to sStudy abroad: Determinants and effects. Higher Education, 69(6), 885-900.Potts, D. (2015). Understanding the early career benefits of learning abroad programs. Journal of Studies in International Education, 19(5), 441-459.Salisbury, M. H., Paulsen, M. B., & Pascarella, E. T. (2011). Why do all the study abroad students look alike? Applying an integrated student choice model to explore differences in the factors that influence white and minotiry studentsâ intent to study abroad. Research in Higher Education, 52, 123-150.Simon, J., & Ainswoth, J. W. (2012). Race and socioeconomic status differences in study abroad participation: The role of habitus, social networks, and cultural capital. International Scholarly Research Network. https://doi.org/10.5402/2012/413896Slotkin, M. H., Durie, C. J., & Eisenberg, J. R. (2012). The benefits of short-term study abroad as a blended learning experience. Journal of International Education in Business, 5(2), 163-173.Slotkin, M. H., Vamosi, A. R., & Perez, E. M. (2016). Study tours and the diversification of cultural capital aAquisition. Journal of International Education in Business, 9(1), 70-86.Smith, D. E., & Mitry, D. (2008). Benefits of study abroad and creating opportunities: The case for short-term programs. Journal of Research in Innovative Teaching, 1(1), 236-245.Stroud, A. H. (2010). Who plans (not) to study abroad? An examination of U.S. student intent. Journal of Studies in International Education, 14(5), 491-507.Wang, L. C., Gault, J. J., Christ, P., & Diggin, P. A. (2016). Individual attitudes and social influences on college studentsâ intent to participate in study abroad programs. Journal of Marketing for Higher Education, 26(1), 103-128.Xiaoxuan, L. (2004). A study by the Chinese Academy of Sciences on the benefits of study abroad. Chinese Education and Society, 37(2), 61-87.Zemach-Bersin, T. (2007). Global citizenship & study abroad: Itâs all about U.S. Critical Literacy: Theories and Practices, 1(2), 16-29.32112
Multiwavelength Observations of A0620-00 in Quiescence
[Abridged.] We present multiwavelength observations of the black hole binary
system, A0620-00. Using the Cosmic Origins Spectrograph on the Hubble Space
Telescope, we have obtained the first FUV spectrum of A0620-00. The observed
spectrum is flat in the FUV and very faint (with continuum fluxes \simeq 1e -
17 ergs/cm^2/s/A). We compiled the dereddened, broadband spectral energy
distribution of A0620-00 and compared it to previous SEDs as well as
theoretical models. The SEDs show that the source varies at all wavelengths for
which we have multiple samples. Contrary to previous observations, the
optical-UV spectrum does not continue to drop to shorter wavelengths, but
instead shows a recovery and an increasingly blue spectrum in the FUV. We
created an optical-UV spectrum of A0620-00 with the donor star contribution
removed. The non-stellar spectrum peaks at \simeq3000 {\deg}A. The peak can be
fit with a T=10,000 K blackbody with a small emitting area, probably
originating in the hot spot where the accretion stream impacts the outer disk.
However, one or more components in addition to the blackbody are needed to fit
the FUV upturn and the red optical fluxes in the optical-UV spectrum. By
comparing the mass accretion rate determined from the hot spot luminosity to
the mean accretion rate inferred from the outburst history, we find that the
latter is an order of magnitude smaller than the former, indicating that
\sim90% of the accreted mass must be lost from the system if the predictions of
the disk instability model and the estimated interoutburst interval are
correct. The mass accretion rate at the hot spot is 10^5 the accretion rate at
the black hole inferred from the X-ray luminosity. To reconcile these requires
that outflows carry away virtually all of the accreted mass, a very low rate of
mass transfer from the outer cold disk into the inner hot region, and/or
radiatively inefficient accretion.Comment: ApJ, accepte
Tiered Approach to Resilience Assessment
Regulatory agencies have long adopted a three-tier framework for risk assessment. We build on this structure to propose a tiered approach for resilience assessment that can be integrated into the existing regulatory processes. Comprehensive approaches to assessing resilience at appropriate and operational scales, reconciling analytical complexity as needed with stakeholder needs and resources available, and ultimately creating actionable recommendations to enhance resilience are still lacking. Our proposed framework consists of tiers by which analysts can select resilience assessment and decision support tools to inform associated management actions relative to the scope and urgency of the risk and the capacity of resource managers to improve system resilience. The resilience management framework proposed is not intended to supplant either risk management or the many existing efforts of resilience quantification method development, but instead provide a guide to selecting tools that are appropriate for the given analytic need. The goal of this tiered approach is to intentionally parallel the tiered approach used in regulatory contexts so that resilience assessment might be more easily and quickly integrated into existing structures and with existing policies
Defining the Rhizobium leguminosarum Species Complex
Bacteria currently included in Rhizobium leguminosarum are too diverse to be considered a single species, so we can refer to this as a species complex (the Rlc). We have found 429 publicly available genome sequences that fall within the Rlc and these show that the Rlc is a distinct entity, well separated from other species in the genus. Its sister taxon is R. anhuiense. We constructed a phylogeny based on concatenated sequences of 120 universal (core) genes, and calculated pairwise average nucleotide identity (ANI) between all genomes. From these analyses, we concluded that the Rlc includes 18 distinct genospecies, plus 7 unique strains that are not placed in these genospecies. Each genospecies is separated by a distinct gap in ANI values, usually at approximately 96% ANI, implying that it is a ânaturalâ unit. Five of the genospecies include the type strains of named species: R. laguerreae, R. sophorae, R. ruizarguesonis, âR. indicumâ and R. leguminosarum itself. The 16S ribosomal RNA sequence is remarkably diverse within the Rlc, but does not distinguish the genospecies. Partial sequences of housekeeping genes, which have frequently been used to characterize isolate collections, can mostly be assigned unambiguously to a genospecies, but alleles within a genospecies do not always form a clade, so single genes are not a reliable guide to the true phylogeny of the strains. We conclude that access to a large number of genome sequences is a powerful tool for characterizing the diversity of bacteria, and that taxonomic conclusions should be based on all available genome sequences, not just those of type strains
Defining the Rhizobium leguminosarum Species Complex
Bacteria currently included in Rhizobium leguminosarum are too diverse to be considered a single species, so we can refer to this as a species complex (the Rlc). We have found 429 publicly available genome sequences that fall within the Rlc and these show that the Rlc is a distinct entity, well separated from other species in the genus. Its sister taxon is R. anhuiense. We constructed a phylogeny based on concatenated sequences of 120 universal (core) genes, and calculated pairwise average nucleotide identity (ANI) between all genomes. From these analyses, we concluded that the Rlc includes 18 distinct genospecies, plus 7 unique strains that are not placed in these genospecies. Each genospecies is separated by a distinct gap in ANI values, usually at approximately 96% ANI, implying that it is a ânaturalâ unit. Five of the genospecies include the type strains of named species: R. laguerreae, R. sophorae, R. ruizarguesonis, âR. indicumâ and R. leguminosarum itself. The 16S ribosomal RNA sequence is remarkably diverse within the Rlc, but does not distinguish the genospecies. Partial sequences of housekeeping genes, which have frequently been used to characterize isolate collections, can mostly be assigned unambiguously to a genospecies, but alleles within a genospecies do not always form a clade, so single genes are not a reliable guide to the true phylogeny of the strains. We conclude that access to a large number of genome sequences is a powerful tool for characterizing the diversity of bacteria, and that taxonomic conclusions should be based on all available genome sequences, not just those of type strains
Inhibition of Vaginal Lactobacilli by a Bacteriocin-Like Inhibitor Produced by Enterococcus faecium 62-6: Potential Significance for Bacterial Vaginosis
Objective: Bacterial vaginosis (BV) is characterized by a shift in vaginal tract ecology, which includes a decrease in the concentration and/or prevalence of facultative lactobacilli. Currently, mechanisms which could account for the disappearance of lactobacilli are not well understood. The objective of this study was to determine whether vaginal streptococci/enterococci can produce bacteriocin-like inhibitors antagonistic to vaginal lactobacilli. Methods: Seventy strains of vaginal streptococci or enterococci were tested for antagonistic activities against vaginal lactobacilli using the deferred antagonism technique. Results: One strain, Enterococcus faecium 62-6, which strongly inhibited growth of lactobacilli was selected for further characterization. The spectrum of inhibitory activity of strain 62-6 included Gram-positive organisms from the vaginal environment, although native lactobacilli from the same host were resistant to inhibitor action. Following growth inMRSbroth the strain 62-6 inhibitor was shown to be heat- (100â, 30 minutes), cold- (4â, less than 114 days) and pH- (4â7) stable. The sensitivity of inhibitor-containing supernatants to pepsin and α-chymotrypsin suggested an essential proteinaceous component. The inhibitor was sensitive to lipase but resistant to lysozyme. Dialysis of inhibitor-containing culture supernatants suggested a molecular mass greater than 12 000 Da. All physicochemical properties were consistent with its classification as a bacteriocin-like inhibitor. Kinetic assays demonstrated a sharp onset of inhibitor production coinciding with a concentration of 62-6 of 10(7) cfu/ml, suggesting that production may be regulated by quorum sensing. Conclusions: These results may have clinical significance as a novel mechanism to account for the decline of vaginal Lactobacillus populations and contribute to both the establishment and recurrence of BV
An Experimental Analysis Of the Demand For Payday Loans
The payday loan industry is one of the fastest growing segments of the consumer financial services market in the United States. We design an environment similar to the one that payday loan customers face and then conduct a laboratory experiment to examine what effect, if any, the existence of payday loans has on individuals\u27 abilities to manage and to survive financial setbacks. Our primary objective is to examine whether access to payday loans improves or worsens the likelihood of financial survival in our experiment. We also test the degree to which people\u27s use of payday loans affects their ability to survive financially. We find that payday loans help the subjects to absorb expenditure shocks and therefore survive financially. However, subjects whose demand for payday loans exceeds a certain threshold level are at a greater risk than a corresponding subject in the treatment in which payday loans do not exist
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