Lessons Learned: Teaching Latinx Teacher Candidates Through Digital Literacy and Community Service Learning

The authors focus on digital literacy and community service learning (CSL) strategies from research of Latinx undergraduate teacher candidates (TCs) engaged with technology in CSL courses. The qualitative studies have taken place in a tutorial agency and university classrooms in the Rio Grande Valley, Texas, one of the most economically-strapped U.S. regions. The 60 participants were Bussert-Webb’s TCs in Summer 2016 and Summer 2017 (n=28) and Lewis’s TCs in Fall 2018 and Spring 2019 courses (n=32). Data sources include participant observations, surveys, focus groups, lessons, and reflections. Using social justice and New Literacies frameworks and thematic data analysis, the authors discuss four concepts that have influenced their practices: 1) risk-taking is more important than our digital expertise, 2) digital literacy connects to social justice contexts, 3) TCs engage in authentic technology experiences, and 4) technology-infused CSL is provided. Implications relate to closing a three-tier digital divide among Latinx teachers and youth

Bilinear forms on Grothendieck groups of triangulated categories

We extend the theory of bilinear forms on the Green ring of a finite group developed by Benson and Parker to the context of the Grothendieck group of a triangulated category with Auslander-Reiten triangles, taking only relations given by direct sum decompositions. We examine the non-degeneracy of the bilinear form given by dimensions of homomorphisms, and show that the form may be modified to give a Hermitian form for which the standard basis given by indecomposable objects has a dual basis given by Auslander-Reiten triangles. An application is given to the homotopy category of perfect complexes over a symmetric algebra, with a consequence analogous to a result of Erdmann and Kerner.Comment: arXiv admin note: substantial text overlap with arXiv:1301.470

Methods to Study Activity Dependent Protein Synthesis in Autism Spectrum Disorder

It is estimated by the World Health Organization that 1 in 100 children have autism spectrum disorder (ASD), a condition characterized by neurological differences that may impact a person’s learning or behavior. Clinically, ASD symptoms are alleviated with behavioral or pharmacological therapies, however, not all patients respond to these interventions. Deep brain stimulation (DBS) is a promising treatment of Parkinson’s disease that could also be effective in treating ASD. SynGAP1 is a protein involved in neuronal action that is crucial for regulating synaptic plasticity. Mutations in the SYNGAP1 gene causing haploinsufficiency can result in the manifestation of ASD symptoms. This study aims at gathering information on the potential of using a Syngap1+/- mouse model to determine whether DBS can counter neurological differences between mice with haploinsufficiency and wild type littermates. Histology slides were analyzed for lesioning from previous surgeries performed in which electrodes were placed for DBS. To gain baseline data before DBS, behavioral tests were conducted on both male and female wild type and Syngap1+/- mice to understand differences. To correlate behavioral results with protein synthesis, labeling of newly synthesized proteins was optimized using azidohomoalanine. Inspection of histology slides showed no evidence of brain lesioning in mice that were to have undergone DBS. Behavioral results revealed increased hyperactivity in mice with haploinsufficiency. Additionally, SDS-PAGE analysis of azidohomoalanine injections revealed more injections administered on subsequent days provides optimal proteomic labeling. With this information, further research can be conducted in which DBS is performed followed by behavioral studies and proteomic analysis

Latinx Children’s Push and Pull of Spanish Literacy and Translanguaging

We explored 19 Latinx children’s literacies in Spanish and translanguaging by asking, “What are Latinx children’s experiences and beliefs regarding Spanish and translanguaging reading and writing? How do tutorial staff and teacher candidates (TCs) help the youth to resist hegemonic and bracketing practices of English-only?” This study took place in a South Texas tutorial agency, where children voluntarily attended for after-school homework help. Data sources consisted of questionnaires, interviews, focus groups, hobby essays, and newsletter articles. Most children reported negative school-related language experiences and expressed dislike and unease regarding Spanish and translanguaging reading and writing, although they lived less than 10 miles from the Mexico border. However, two tutorial staff and 15 TCs provided counter narratives and modeled that Spanish and translanguaged (hybrid) reading and writing are neither wrong nor difficult. Schools’ accountability pressures and the U.S. socio-political milieu move language to the center (centripetal forces), while forces that resist normalization are centrifugal. Implications relate to how neighborhood educational centers, TCs, and classroom teachers can help subaltern youth to resist centripetal language forces

Support varieties for selfinjective algebras

Support varieties for any finite dimensional algebra over a field were introduced by Snashall-Solberg using graded subalgebras of the Hochschild cohomology. We mainly study these varieties for selfinjective algebras under appropriate finite generation hypotheses. Then many of the standard results from the theory of support varieties for finite groups generalize to this situation. In particular, the complexity of the module equals the dimension of its corresponding variety, all closed homogeneous varieties occur as the variety of some module, the variety of an indecomposable module is connected, periodic modules are lines and for symmetric algebras a generalization of Webb's theorem is true

Randomized, controlled trial evaluating the effect of multi-strain probiotic on the mucosal microbiota in canine idiopathic inflammatory bowel disease

The intestinal microbiota is increasingly linked to the pathogenesis of idiopathic inflammatory bowel disease (IBD) in dogs. While studies have reported alterations in fecal (luminal) microbial populations, only limited information is available about the mucosal microbiota of IBD dogs at diagnosis and following medical therapy. Our aim was to characterize the mucosal microbiota and determine the clinical, microbiological, and mucosal homeostatic effects of probiotic treatment in dogs with IBD. Thirty four IBD dogs were randomized to receive standard therapy (ST = diet + prednisone) with or without probiotic. Tissue sections from endoscopic biopsies were evaluated by fluorescence in situ hybridization (FISH) on a quantifiable basis. Disease activity and changes in mucosal microbiota and tight junction protein (TJP) expression were assessed before and after 8 weeks of IBD therapy. ST and ST/probiotic therapy modulated the number of mucosal bacteria of IBD dogs in a similar fashion. Both treatments increased the numbers of total bacteria and individual species residing within adherent mucus, with ST therapy increasing Bifidobacterium spp. and ST/probiotic therapy increasing Lactobacillus spp (P \u3c 0.05 for both), respectively. Both treatments were associated with rapid clinical remission but not improvement in histopathologic inflammation. Probiotic therapy was associated with upregulated (P \u3c 0.05) expression of TJPs E-cadherin, occludin, and zonulin versus ST. The probiotic effect on mucosal bacteria is similar to that of IBD dogs receiving ST. IBD dogs fed probiotic had increased TJP expression suggesting that probiotic may have beneficial effects on mucosal homeostasis

Fuzapladib in a randomized controlled multicenter masked study in dogs with presumptive acute onset pancreatitis

We read with interest the article by Steiner et al,1 that claims that administration of fuzapladib is safe and effective in reducing 2 clinical scores in dogs with acute pancreatitis (AP). We commend Steiner et al for their efforts in addressing a critical need in veterinary medicine. This letter, however, raises significant concerns regarding the methodology and interpretation of the study results