Academic disidentification in African American college students : an exploratory investigation of the role of teacher trust, parental racial socialization, and gender

textThe purpose of this study was to explore whether academic disidentification (i.e., the relation between ASC and GPA), differed based on students’ gender and reported level of parental racial-ethnic socialization and teacher trust. This study was exploratory in nature, as few researchers have examined the relation between parental racial-ethnic socialization and academic outcomes or the relation between teacher trust and academic outcomes. Secondary goals of this study included and examination of (1) the relation between racial socialization and academic outcomes, (2) the relation between teacher trust and academic outcomes, (3) the relation between parenting constructs (i.e., racial socialization and parental warmth) and teacher trust, and (4) the role of parental warmth as a variable that potentially buffers negative child outcomes or enhances positive child outcomes. Participants included 319 African American students (120 males, 199 females) recruited from a large, southwestern, predominantly white university. Results indicated the presence of academic disidentification as unique to upperclassmen males (i.e., the relation between ASC and GPA was significant for females and underclassmen males, but not upperclassmen males). Parental messages of promotion of mistrust were found to significantly moderate the relation between ASC and GPA. Further, in examining the influence of the combination of teacher trust x sex on the relation between ASC and GPA, a significant three-way interaction was present. Teacher trust was also found to be a significant predictor of GPA, with gender significantly moderating this relation. Gender differences were present for teacher trust, but there were not differences between underclassmen and upperclassmen. Racial socialization variables were not found to significantly predict GPA. However, two types of racial socialization (promotion of mistrust and egalitarianism) and parental warmth were found to be significant predictors of teacher trust. Theoretical and practical implications of these findings are discussed.Educational Psycholog

The Effects of the Use of a Self-monitoring Form on Achievement and Self-regulated Learning in a Developmental Mathematics Course

For most undergraduate degrees, students are required to fulfill a baseline of mathematics requirements. However, some students are not prepared to begin in a college-level mathematics course and must begin coursework in a developmental mathematics course. Therefore, identifying ways to increase the student success rate in developmental mathematics courses is an important issue faced by many post-secondary institutions. The purpose of this study was to investigate student use of a self-monitoring instrument when working online in a university developmental mathematics course, Intermediate Algebra, which blended online learning and face-to-face instruction. Comparisons of achievement on exams, self-regulated learning levels, and course grade were made between students using a self-monitoring instrument while working online and those that did not use this instrument. There were 661 students included in this semester-long study. There were three phases in this study. In Phase 1, students in the experimental group received the most intense treatment. Students were asked to complete a self-monitoring record form after every online assignment for a total of four times. During Phase 2, the treatment was moderate as students were asked to complete the online record form after every other online assignment for an additional two occurrences. In Phase 3 the treatment was removed and students were not required to complete any online record forms. All participants were asked to complete a questionnaire in class four different times throughout the semester to measure levels of self-regulation when working online. This study used a nonequivalent-control-group experimental design with repeated measures. ANCOVA results indicated that the experimental group as a whole performed slightly but statistically significantly better than the control group on two of the three unit assessments- the Unit 3 Exam which was completed at the end of Phase 2 and the Unit 4 Exam which was completed at the end of Phase 3. ANOVA revealed that during Phase 2, the experimental group as a whole had a small yet statistically significant increase in their level of self-regulation compared to the control group yet in Phase 3 those differences did not remain statistically significant. Positive correlations were identified between students’ composite score on the fourth measurement of levels of self-regulated learning and their final course grade as well as subscale scores, Goal Setting, Environment Structuring, Help Seeking, and Self-evaluation, and students’ final course grade

Educational Outcomes of Small-Group Discussion Versus Traditional Lecture Format in Dental Students\u27 Learning and Skills Acquisition.

The aim of this prospective quantitative study was to compare the effect of different instructional formats on dental students\u27 skills and knowledge acquisition for access cavity preparation. All first-year dental students were invited to participate in this study conducted during the four consecutive two-week endodontic rotation courses at the University of the Pacific Arthur A. Dugoni School of Dentistry in spring semester 2015. Four alphabetically distributed intact groups of students were randomly allocated to two groups (n=70 each) that participated in either small-group discussion or a traditional lecture on access preparation. The first outcome measure was skill acquisition, measured by the quality of access cavities prepared in extracted teeth at the conclusion of the session. Two blinded raters scored direct observations on a continuous scale. Knowledge, the second outcome measure, was scored with a multiple-choice and open-ended question test at the end of each two-week session. Data were obtained for 134 of the 140 students, for a 96% response rate. The results showed that students in the small-group discussion groups scored significantly higher than those in the lecture groups when skill performance was tested (p=8.9 × 10(-7)). However, no significant differences were found in the acquisition of knowledge between the two groups on the written test. Active student participation was significantly related to improved manual skill acquisition, but the format of the session does not seem to have had a direct influence on acquired knowledge

Reshaping Practitioner Higher Education Institutions to Serve Adult Learners: The COVID-19 Pandemic Implications

Involving over 200 countries, the COVID-19 global pandemic impacts adult learners’ retention, increasing the need to reshape practitioner-oriented higher education institutions to better serve students. The purpose of this study was to explore how practitioner higher education institutions adopted innovative approaches and reshaped policies, practices, and perspectives to accommodate changes brought about by the COVID- 19 pandemic and successfully maintained or increased enrollment. This article reports the results, which may enhance practitioner higher education programs and enrollment

Latency measurement of a real-time virtual acoustic environment rendering system

Proceedings of the 9th International Conference on Auditory Display (ICAD), Boston, MA, July 7-9, 2003.Techniques for measuring and estimating the end-to-end latency and component latencies of a virtual acoustic environment are discussed. These key parameters impact the responsiveness and, hence, ``realism'' of a virtual environment

Helicobacter pylori Exploits a Unique Repertoire of Type IV Secretion System Components for Pilus Assembly at the Bacteria-Host Cell Interface

Colonization of the human stomach by Helicobacter pylori is an important risk factor for development of gastric cancer. The H. pylori cag pathogenicity island (cag PAI) encodes components of a type IV secretion system (T4SS) that translocates the bacterial oncoprotein CagA into gastric epithelial cells, and CagL is a specialized component of the cag T4SS that binds the host receptor α5β1 integrin. Here, we utilized a mass spectrometry-based approach to reveal co-purification of CagL, CagI (another integrin-binding protein), and CagH (a protein with weak sequence similarity to CagL). These three proteins are encoded by contiguous genes in the cag PAI, and are detectable on the bacterial surface. All three proteins are required for CagA translocation into host cells and H. pylori-induced IL-8 secretion by gastric epithelial cells; however, these proteins are not homologous to components of T4SSs in other bacterial species. Scanning electron microscopy analysis reveals that these proteins are involved in the formation of pili at the interface between H. pylori and gastric epithelial cells. ΔcagI and ΔcagL mutant strains fail to form pili, whereas a ΔcagH mutant strain exhibits a hyperpiliated phenotype and produces pili that are elongated and thickened compared to those of the wild-type strain. This suggests that pilus dimensions are regulated by CagH. A conserved C-terminal hexapeptide motif is present in CagH, CagI, and CagL. Deletion of these motifs results in abrogation of CagA translocation and IL-8 induction, and the C-terminal motifs of CagI and CagL are required for formation of pili. In summary, these results indicate that CagH, CagI, and CagL are components of a T4SS subassembly involved in pilus biogenesis, and highlight the important role played by unique constituents of the H. pylori cag T4SS

Community-Based Approaches to Reducing Health Inequities and Fostering Environmental Justice through Global Youth-Engaged Citizen Science

Growing socioeconomic and structural disparities within and between nations have created unprecedented health inequities that have been felt most keenly among the world’s youth. While policy approaches can help to mitigate such inequities, they are often challenging to enact in under-resourced and marginalized communities. Community-engaged participatory action research provides an alternative or complementary means for addressing the physical and social environmental contexts that can impact health inequities. The purpose of this article is to describe the application of a particular form of technology-enabled participatory action research, called the Our Voice citizen science research model, with youth. An overview of 20 Our Voice studies occurring across five continents indicates that youth and young adults from varied backgrounds and with interests in diverse issues affecting their communities can participate successfully in multiple contributory research processes, including those representing the full scientific endeavor. These activities can, in turn, lead to changes in physical and social environments of relevance to health, wellbeing, and, at times, climate stabilization. The article ends with future directions for the advancement of this type of community-engaged citizen science among young people across the socioeconomic spectrum

Impact of infection with human immunodeficiency virus-1 (HIV) on the risk of cancer among children in Malawi - preliminary findings

<p>Abstract</p> <p>Background</p> <p>The impact of infection with HIV on the risk of cancer in children is uncertain, particularly for those living in sub-Saharan Africa. In an ongoing study in a paediatric oncology centre in Malawi, children (aged ≤ 15 years) with known or suspected cancers are being recruited and tested for HIV and their mothers or carers interviewed. This study reports findings for children recruited between 2005 and 2008.</p> <p>Methods</p> <p>Only children with a cancer diagnosis were included. Odds ratios (OR) for being HIV positive were estimated for each cancer type (with adjustment for age (<5 years, ≥ 5 years) and sex) using children with other cancers and non-malignant conditions as a comparison group (excluding the known HIV-associated cancers, Kaposi sarcoma and lymphomas, as well as children with other haematological malignancies or with confirmed non-cancer diagnoses).</p> <p>Results</p> <p>Of the 586 children recruited, 541 (92%) met the inclusion criteria and 525 (97%) were tested for HIV. Overall HIV seroprevalence was 10%. Infection with HIV was associated with Kaposi sarcoma (29 cases; OR = 93.5, 95% CI 26.9 to 324.4) and with non-Burkitt, non-Hodgkin lymphoma (33 cases; OR = 4.4, 95% CI 1.1 to 17.9) but not with Burkitt lymphoma (269 cases; OR = 2.2, 95% CI 0.8 to 6.4).</p> <p>Conclusions</p> <p>In this study, only Kaposi sarcoma and non-Burkitt, non-Hodgkin lymphoma were associated with HIV infection. The endemic form of Burkitt lymphoma, which is relatively frequent in Malawi, was not significantly associated with HIV. While the relatively small numbers of children with other cancers, together with possible limitations of diagnostic testing may limit our conclusions, the findings may suggest differences in the pathogenesis of HIV-related malignancies in different parts of the world.</p

Elective surgery system strengthening: development, measurement, and validation of the surgical preparedness index across 1632 hospitals in 119 countries

Background The 2015 Lancet Commission on global surgery identified surgery and anaesthesia as indispensable parts of holistic health-care systems. However, COVID-19 exposed the fragility of planned surgical services around the world, which have also been neglected in pandemic recovery planning. This study aimed to develop and validate a novel index to support local elective surgical system strengthening and address growing backlogs. Methods First, we performed an international consultation through a four-stage consensus process to develop a multidomain index for hospital-level assessment (surgical preparedness index; SPI). Second, we measured surgical preparedness across a global network of hospitals in high-income countries (HICs), middle-income countries (MICs), and low-income countries (LICs) to explore the distribution of the SPI at national, subnational, and hospital levels. Finally, using COVID-19 as an example of an external system shock, we compared hospitals' SPI to their planned surgical volume ratio (SVR; ie, operations for which the decision for surgery was made before hospital admission), calculated as the ratio of the observed surgical volume over a 1-month assessment period between June 6 and Aug 5, 2021, against the expected surgical volume based on hospital administrative data from the same period in 2019 (ie, a pre-pandemic baseline). A linear mixed-effects regression model was used to determine the effect of increasing SPI score. Findings In the first phase, from a longlist of 103 candidate indicators, 23 were prioritised as core indicators of elective surgical system preparedness by 69 clinicians (23 [33%] women; 46 [67%] men; 41 from HICs, 22 from MICs, and six from LICs) from 32 countries. The multidomain SPI included 11 indicators on facilities and consumables, two on staffing, two on prioritisation, and eight on systems. Hospitals were scored from 23 (least prepared) to 115 points (most prepared). In the second phase, surgical preparedness was measured in 1632 hospitals by 4714 clinicians from 119 countries. 745 (45·6%) of 1632 hospitals were in MICs or LICs. The mean SPI score was 84·5 (95% CI 84·1–84·9), which varied between HIC (88·5 [89·0–88·0]), MIC (81·8 [82·5–81·1]), and LIC (66·8 [64·9–68·7]) settings. In the third phase, 1217 (74·6%) hospitals did not maintain their expected SVR during the COVID-19 pandemic, of which 625 (51·4%) were from HIC, 538 (44·2%) from MIC, and 54 (4·4%) from LIC settings. In the mixed-effects model, a 10-point increase in SPI corresponded to a 3·6% (95% CI 3·0–4·1; p<0·0001) increase in SVR. This was consistent in HIC (4·8% [4·1–5·5]; p<0·0001), MIC (2·8 [2·0–3·7]; p<0·0001), and LIC (3·8 [1·3–6·7%]; p<0·0001) settings. Interpretation The SPI contains 23 indicators that are globally applicable, relevant across different system stressors, vary at a subnational level, and are collectable by front-line teams. In the case study of COVID-19, a higher SPI was associated with an increased planned surgical volume ratio independent of country income status, COVID-19 burden, and hospital type. Hospitals should perform annual self-assessment of their surgical preparedness to identify areas that can be improved, create resilience in local surgical systems, and upscale capacity to address elective surgery backlogs. Funding National Institute for Health Research (NIHR) Global Health Research Unit on Global Surgery, NIHR Academy, Association of Coloproctology of Great Britain and Ireland, Bowel Research UK, British Association of Surgical Oncology, British Gynaecological Cancer Society, and Medtronic.publishedVersio