Large-Scale Transit Signal Priority Implementation

In 2016, the District Department of Transportation (DDOT) deployed Transit Signal Priority (TSP) at 195 intersections in highly urbanized areas of Washington, DC. In collaboration with a broader regional implementation, and in partnership with the Washington Metropolitan Area Transit Authority (WMATA), DDOT set out to apply a systems engineering–driven process to identify, design, test, and accept a large-scale TSP system. This presentation will highlight project successes and lessons learned

GENETIC CONTROL OF THE IMMUNE RESPONSE TO STAPHYLOCOCCAL NUCLEASE : I. IR-NASE: CONTROL OF THE ANTIBODY RESPONSE TO NUCLEASE BY THEIR REGION OF THE MOUSEH-2 COMPLEX

A number of inbred and congenic resistant strains of mice were immunized with staphylococcal nuclease (Nase). Antibody responses were measured in the sera of the animals by a sensitive method involving inhibition of enzymatic hydrolysis of DNA, High responder strains included A/J, DBA/2, BALB/c, AKR/J, C57BR, and SJL/J. DBA/1 and C57BL/6 mice were low responders. The strain distribution of anti-Nase response potential was compatible with the relevant immune response gene(s) being linked to the murine major histocompatibility complex. Linkage of this response to H-2 was demonstrated by the findings that: (a) the congenic C3H/HeJ and C3H.SW mice were respectively high and low responders; (b) the congenic lines B10.A and B10.D2 were high responders, whereas the C57BL/10 strain was a poor responder; and (c) anti-Nase response potential of F2 progeny from DBA/1 x SJL/J matings correlated with their H-2 type. Three B10.A recombinant lines were used to map this Ir gene within H-2. B10.A(4R) was a high responder to Nase, whereas B10.A(2R) and B10.A(5R) were both low responders. We wish to propose the name Ir-Nase for the gene(s) controlling antibody responsiveness to this immunogen. Our data indicate that Ir-Nase is located within the same chromosomal segment of the H-2 complex as is Ir-IgG

Left ventricular apical puncture: A procedure surviving well into the new millennium

We report two patients with a history of prior mitral valve and aortic valve replacement with St. Jude prosthetic valves, who were referred for repeat valve replacement after noninvasive assessment was suggestive of prosthetic valve malfunction. Both patients were managed medically after evaluation with direct left ventricular apical puncture revealed normal hemodynamics in the first and mild aortic stenosis in the second patient. These two cases illustrate that, despite the advancements in the noninvasive evaluation of prosthetic heart valves, left ventricular direct puncture continues to have an important value in the evaluation of patients referred for repeat valve replacement, and it can prevent unnecessary surgeries associated with a high risk of morbidity and mortality. Cathet. Cardiovasc. Intervent. 49:68–73, 2000. © 2000 Wiley-Liss, Inc.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/35246/1/15_ftp.pd

Case Study Activities to Explore Biases in Mathematics Education and Special Education

Using a case study and a series of activities given over the course of a semester, preservice teachers answered discussion based questions to uncover implicit biases. This study was done to help preservice teachers begin to talk about the impact of racial biases in special education. The case study is about a Black boy named Tay who engaged in a counting collections task in a kindergarten classroom. The responses were coded using the FAIR framework (Louie et al., 2021) in order to categorize the preservice teachers’ noticings. Class discussions and practicum experiences occurred over the course of these activities to see how noticings would change based on these. Modifications for future studies are included to look further into how to guide preservice teachers to anti-deficit noticings