Resource envelope concepts for mission planning

Seven proposed methods for creating resource envelopes for Space Station Freedom mission planning are detailed. Four reference science activity models are used to illustrate the effect of adding operational flexibility to mission timelines. For each method, a brief explanation is given along with graphs to illustrate the application of the envelopes to the power and crew resources. The benefits and costs of each method are analyzed in terms of resource utilization. In addition to the effect on individual activities, resource envelopes are analyzed at the experiment level

The Crisis in Legal Education: Dabbling in Disaster Planning

The legal education crisis has already struck for many recent law school graduates, signaling potential disaster for law schools already struggling with their own economic challenges. Law schools have high fixed costs caused by competition between schools, the unchecked expansion of federal loan programs, a widely exploited information asymmetry about graduate employment outcomes, and a lack of financial discipline masquerading as innovation. As a result, tuition is up, jobs are down, and skepticism of the value of a J.D. has never been higher. If these trends do not reverse course, droves of students will continue to graduate with debt that greatly reduces their ability to fulfill the law school graduate\u27s traditional and important role in American society. The point at which the law school crisis becomes a disaster for legal education is debatable, but the importance of preparing for and forestalling this disaster is not. This Article serves two forward-looking purposes that stem from the premise that American legal education requires structural change to reduce the cost of obtaining a legal education. First, we set a framework for thinking about reforms to the method of delivering legal education. Second, we examine three blueprints for structural reform: one that has already been implemented and is ineffective, and two that set the discussion on the right track. These blueprints reject mere tinkering in favor of refocusing the attention of legal education stakeholders on the drastic structural changes needed to provide quality, affordable legal education. While we provide only a starting point for considering how the two new models could work in principle, they serve as an intellectual blueprint that can pave the way for new and better ideas about legal education. It is clear that cost reform is necessary, and it is likely that substantial reform is coming. The shape of this reform depends on who gets involved, who we hope include actors beyond those who have set legal education on a path toward disaster

INTEGERS: ELECTRONIC JOURNAL OF COMBINATORIAL NUMBER THEORY 7 (2007), #A29 DISJUNCTIVE RADO NUMBERS FOR x1 + x2 + c = x3

Given two equations E1 and E2, the disjunctive Rado number for E1 and E2 is the least integer n, provided that it exists, such that for every coloring of the set {1, 2,..., n} with two colors there exists a monochromatic solution to either E1 or E2. If no such integer n exists, then the disjunctive Rado number for E1 and E2 is infinite. Let R(c, k) represen

The Crisis in Legal Education: Dabbling in Disaster Planning

The legal education crisis has already struck for many recent law school graduates, signaling potential disaster for law schools already struggling with their own economic challenges. Law schools have high fixed costs caused by competition between schools, the unchecked expansion of federal loan programs, a widely exploited information asymmetry about graduate employment outcomes, and a lack of financial discipline masquerading as innovation. As a result, tuition is up, jobs are down, and skepticism of the value of a J.D. has never been higher. If these trends do not reverse course, droves of students will continue to graduate with debt that greatly reduces their ability to fulfill the law school graduate\u27s traditional and important role in American society. The point at which the law school crisis becomes a disaster for legal education is debatable, but the importance of preparing for and forestalling this disaster is not. This Article serves two forward-looking purposes that stem from the premise that American legal education requires structural change to reduce the cost of obtaining a legal education. First, we set a framework for thinking about reforms to the method of delivering legal education. Second, we examine three blueprints for structural reform: one that has already been implemented and is ineffective, and two that set the discussion on the right track. These blueprints reject mere tinkering in favor of refocusing the attention of legal education stakeholders on the drastic structural changes needed to provide quality, affordable legal education. While we provide only a starting point for considering how the two new models could work in principle, they serve as an intellectual blueprint that can pave the way for new and better ideas about legal education. It is clear that cost reform is necessary, and it is likely that substantial reform is coming. The shape of this reform depends on who gets involved, who we hope include actors beyond those who have set legal education on a path toward disaster

New proofs for strongly chordal graphs and chordal bipartite graphs

We give new proofs of well-known characterizations of strongly chordal graphs and chordal bipartite graphs. The key ingredient is the dual hypertree structure for totally balanced hypergraphs. We also consider split graphs and threshold graphs

Visual arts in the clinical clerkship: a pilot cluster-randomized, controlled trial

Abstract Background Arts exposure is associated with positive psychological constructs. To date, no randomized, controlled studies have integrated art into clinical medical education or measured its effects on positive psychological constructs or educational outcomes. In this study, we assessed the possibility and potential benefits of integrating visual arts education into a required internal medicine (IM) clinical clerkship. Methods We conducted a controlled trial in an academic healthcare system with an affiliated art museum. IM students were assigned to one of three interventions: museum-based arts (n = 11), hospital-based arts (n = 10), or hospital-based conventional education (n = 13). Arts groups explored empathy, resilience, and compassion in works of art during facilitator-guided discussions. We assessed pre- and post-intervention measures of empathy, mindfulness, tolerance of ambiguity, and grit and tracked National Board of Medical Examiners IM shelf exam performance to capture changes in educational outcomes. Focus group discussions with participants in the arts-based interventions were performed at the study’s conclusion. Results Arts education was successfully integrated into a busy clinical clerkship in both hospital and art museum settings. Focus group participants reported increased implicit bias cognizance and time for reflection, but no significant differences in psychometric or educational outcomes were identified. While most students felt positively toward the experience; some experienced distress from missed clinical time. Conclusions This pilot study demonstrates the feasibility of integrating visual arts education into the clerkship. Although observable quantitative differences in measures of positive psychological constructs and educational outcomes were not found, qualitative assessment suggested benefits as well as the feasibility of bringing fine arts instruction into the clinical space. A larger, multi-center study is warranted.http://deepblue.lib.umich.edu/bitstream/2027.42/173618/1/12909_2020_Article_2386.pd

Clinical application of next generation sequencing in lymphoma.

Successful treatment of relapsed/refractory and rare subtypes of lymphomas remains a therapeutic challenge. Though the use of tumor profiling is increasing, little is described about how providers ultimately utilize this information in clinical decision-making. We reviewed 92 adult lymphoma patients who underwent an IRB-approved tumor sequencing protocol at the University of Michigan, MI-ONCOSEQ. Of this cohort, 60 had a targeted treatment suggested by their test results, and 11 patients ultimately underwent the MI-ONCOSEQ recommended therapy. One obtained complete response based on precision treatment recommendations. The two main barriers for targeted treatment utilization included inopportune timing (the patient either was sequenced too early or too late in their disease course) and clinical trial availability. While this study demonstrates the success of sequencing lymphomas for the identification of novel therapies, it also underlines the clinical challenges, namely the optimal timing and availability of trials, inherent in the successful application of this technology

Patch grafting, strategies for transplantation of organoids into solid organs such as liver

Epithelial cell therapies have been at an impasse because of inefficient methods of transplantation to solid organs. Patch grafting strategies were established enabling transplantation of ≥107th organoids/patch of porcine GFP+ biliary tree stem/progenitors into livers of wild type hosts. Grafts consisted of organoids embedded in soft (~100 Pa) hyaluronan hydrogels, both prepared in serum-free Kubota's Medium; placed against target sites; covered with a silk backing impregnated with more rigid hyaluronan hydrogels (~700 Pa); and use of the backing to tether grafts with sutures or glue to target sites. Hyaluronan coatings (~200–300 Pa) onto the serosal surface of the graft served to minimize adhesions with neighboring organs. The organ's clearance of hyaluronans enabled restoration of tissue-specific paracrine and systemic signaling, resulting in return of normal hepatic histology, with donor parenchymal cells uniformly integrated amidst host cells and that had differentiated to mature hepatocytes and cholangiocytes. Grafts containing donor mature hepatocytes, partnered with endothelia, and in the same graft biomaterials as for stem/progenitor organoids, did not engraft. Engraftment occurred if porcine liver-derived mesenchymal stem cells (MSCs) were co-transplanted with donor mature cells. RNA-seq analyses revealed that engraftment correlated with expression of matrix-metalloproteinases (MMPs), especially secreted isoforms that were found expressed strongly by organoids, less so by MSCs, and minimally, if at all, by adult cells. Engraftment with patch grafting strategies occurred without evidence of emboli or ectopic cell distribution. It was successful with stem/progenitor organoids or with cells with a source(s) of secreted MMP isoforms and offers significant potential for enabling cell therapies for solid organs

Patch grafting, strategies for transplantation of organoids into solid organs such as liver

Epithelial cell therapies have been at an impasse because of inefficient methods of transplantation to solid organs. Patch grafting strategies were established enabling transplantation of ≥107th organoids/patch of porcine GFP+ biliary tree stem/progenitors into livers of wild type hosts. Grafts consisted of organoids embedded in soft (~100 Pa) hyaluronan hydrogels, both prepared in serum-free Kubota's Medium; placed against target sites; covered with a silk backing impregnated with more rigid hyaluronan hydrogels (~700 Pa); and use of the backing to tether grafts with sutures or glue to target sites. Hyaluronan coatings (~200–300 Pa) onto the serosal surface of the graft served to minimize adhesions with neighboring organs. The organ's clearance of hyaluronans enabled restoration of tissue-specific paracrine and systemic signaling, resulting in return of normal hepatic histology, with donor parenchymal cells uniformly integrated amidst host cells and that had differentiated to mature hepatocytes and cholangiocytes. Grafts containing donor mature hepatocytes, partnered with endothelia, and in the same graft biomaterials as for stem/progenitor organoids, did not engraft. Engraftment occurred if porcine liver-derived mesenchymal stem cells (MSCs) were co-transplanted with donor mature cells. RNA-seq analyses revealed that engraftment correlated with expression of matrix-metalloproteinases (MMPs), especially secreted isoforms that were found expressed strongly by organoids, less so by MSCs, and minimally, if at all, by adult cells. Engraftment with patch grafting strategies occurred without evidence of emboli or ectopic cell distribution. It was successful with stem/progenitor organoids or with cells with a source(s) of secreted MMP isoforms and offers significant potential for enabling cell therapies for solid organs