SeQuential: Sustainability and Growth in the Biofuels Business

SeQuential, a vertically-integrated biodiesel company based in Portland, Oregon, pursued a more sustainable supply and production strategy than many competitors by securing inputs from used cooking oil (UCO) rather than new crops. A fragmented U.S. biodiesel industry produced more than 1.25 billion gallons of the fuel in 2016 from a mix of virgin materials and UCO, but the environmental impact of crop-based biodiesel was increasingly controversial. Meanwhile, UCO collection had grown rapidly in recent years, and with strong forecasted growth, offered a potential additional revenue stream for vertically-integrated biodiesel firms. The price of the UCO used to produce SeQuential’s biodiesel and the fuel itself were driven by commodity indices, creating a highly volatile market. In addition, industry profitability was heavily reliant on government support. This support was manifested through funding for Renewable Identification Numbers (RINs) and tax credits. The recent election of a U.S. President publicly opposed to climate change mitigation, and the re-election of a sympathetic U.S. Congress, worsened perennial uncertainty around the renewal of these policies. Tyson Keever, President and CEO of SeQuential, had guided the company through a period of major growth and vertical integration by overseeing a series of regional mergers and acquisitions. As a result, the company now faced growing pains linked to employee turnover, operational integration and efficiency, and instilling a culture of sustainability in all SeQuential employees. At the same time, SeQuential was developing a new strategy for future growth, while attempting to mitigate increased regulatory and market uncertainty. In this case, students are tasked with developing a series of strategic, mission-aligned growth proposals that address these challenges

The black hole population in low-mass galaxies in large-scale cosmological simulations

Recent systematic searches for massive black holes (BHs) in local dwarf galaxies led to the discovery of a population of faint Active Galactic Nuclei (AGN). We investigate the agreement of the BH and AGN populations in the Illustris, TNG, Horizon-AGN, EAGLE, and SIMBA simulations with current observational constraints in low-mass galaxies. We find that some of these simulations produce BHs that are too massive, and that the BH occupation fraction at z=0 is not inherited from the simulation seeding modeling. The ability of BHs and their host galaxies to power an AGN depends on BH and galaxy subgrid modeling. The fraction of AGN in low-mass galaxies is not used to calibrate the simulations, and thus can be used to differentiate galaxy formation models. AGN fractions at z=0 span two orders of magnitude at fixed galaxy stellar mass in simulations, similarly to observational constraints, but uncertainties and degeneracies affect both observations and simulations. The agreement is difficult to interpret due to differences in the masses of simulated and observed BHs, BH occupation fraction affected by numerical choices, and an unknown fraction of obscured AGN. Our work advocates for more thorough comparisons with observations to improve the modeling of cosmological simulations, and our understanding of BH and galaxy physics in the low-mass regime. The mass of BHs, their ability to efficiently accrete gas, and the AGN fraction in low-mass galaxies have important implications for the build-up of the entire BH and galaxy populations with time.Comment: Accepted in MNRAS, 21 pages, 11 figures, 1 tabl

IVOA Recommendation: IVOA Registry Interfaces Version 1.0

Registries provide a mechanism with which VO applications can discover and select resources--e.g. data and services--that are relevant for a particular scientific problem. This specification defines the interfaces that support interactions between applications and registries as well as between the registries themselves. It is based on a general, distributed model composed of so-called searchable and publishing registries. The specification has two main components: an interface for searching and an interface for harvesting. All interfaces are defined by a standard Web Service Description Language (WSDL) document; however, harvesting is also supported through the existing Open Archives Initiative Protocol for Metadata Harvesting, defined as an HTTP REST interface. Finally, this specification details the metadata used to describe registries themselves as resources using an extension of the VOResource metadata schema

Learning to be Human Together

This project is made possible with funding by the Government of Ontario and through eCampusOntario’s support of the Virtual Learning Strategy.I. Come On InII. The Modules (1-4)III. OutroIV. Some Things We Picked Up & Take EverythingThis resource explores what humanizing teaching and learning means: to acknowledge that our relationships are foundational to the work that we do. It means to make learning inclusive with connection, access, and meaning-making at its core. When you have something to say that you hope can empower people and encourage inclusion you yell it from the rooftops and in as many formats as possible. To that end, you will find the materials of this project in a number of formats — to meet you where you are and how YOU choose to interact with it. This is just the beginning of what we hope will be a deeply humanized experience. This material is not a book, nor a guide, nor a checklist–it’s an engagement with complex issues, with social entanglements, and with ways of doing (and not doing) things. This work also foregrounds the importance of twelve core super themes, such as trust, vulnerability, re-framing failure, and friction. These super themes are not discrete units or siloed entities, rather they are multi-layered ideas that intersect and weave together across the humanizing learning spectrum. Module 1: Unlearning & Unsettling. How do we know what we know and what is our educational value system? To move forward, we must interrogate our teaching and learning practices - the work of unlearning and unsettling. This module explores how the process is more important than the outcome, and highlights the importance of moving slowly, giving ourselves time to think, process, and reflect. Module 2: Students as Agents of the own Diverse Destiny. This module explores the importance and role of vulnerability and failure in humanizing learning. It emphasizes that we are all learning and explores how, since education is relational, power is especially present. Module 3: Co-Creating Inclusive Communities. This module acknowledges that diversity is our greatest asset, with inclusion being our most important challenge. It explores community guidelines, participation standards, ethics, social justice, co-design and co-creation, and highlights how these concepts can fundamentally challenge and disrupt power. Module 4: Sustaining Change. This module acknowledges that change is hard. How can we sustain change, complexity, and care in a system that was not designed for what our society demands of it? How do we foreground care and frame it as a reciprocal process? This module explores this apparent friction and highlights steps we can take to make this work both foundational and sustainable. This resource also includes an exploration of the co-design experience - the process of creating and nurturing a community that collectively did this work. Coming out the other side of this work are a group of people who came together to share our love for learning and our passion for education. We hope you find something here that changes even one small aspect of how you move through the world

A Highly Fatigue-Resistant Zr-Based Bulk Metallic Glass

The strength-normalized fatigue endurance strength of the bulk metallic glass (BMG) Zr₅₂.₅Cu₁₇.₉Ni₁₄.₆Al₁₀Ti₅ (Vitreloy 105) has been reported to be the highest for any BMG; however, to date, there has been no explanation of why this material is so much better than other Zr-based compositions. In this study, the fatigue-crack growth behavior of Zr₅₂.₅Cu₁₇.₉Ni₁₄.₆Al₁₀Ti₅ was compared in ambient air vs dry nitrogen environment. The excellent fatigue life behavior is attributed to a relatively high fatigue threshold (Kₜₕ ≈ 2 MPa√m) and a lack of sensitivity to environmental effects on fatigue-crack growth in ambient air, as compared to other Zr-based BMGs. Fatigue life experiments conducted in ambient air confirmed the excellent fatigue life properties with a 10⁷-cycle endurance strength of ~0.24 of the ultimate tensile strength; however, it was also found that casting porosity, even in limited amounts, could reduce this endurance strength by as much as ~60 pct. Overall, the BMG Zr₅₂.₅Cu₁₇.₉Ni₁₄.₆Al₁₀Ti₅ appears to have excellent strength and fatigue properties and should be considered as a prime candidate material for future applications where good mechanical fatigue resistance is required

The Grizzly, October 8, 1991

1991 Parents\u27 Day a Great Success • Homecoming Festivities Planned • Is the Soviet Union Dead? • Teacher Appreciation Dinner a Success • Tortorelli at NASA • What About Recycled Paper? • Movie Review: Misery • Jane Powell Returns • Saffire: Uppity Blues Women • The Aggressive Couple • Homecoming Queen Nominees • Ethnic Degradation • Unsafe City • Appreciate Today • Construction Blues • Letter: Come On, Harley! • Bears Maul Swarthmore • Lady Bears Run to Victory • Volleyball Gets Spiked • Field Hockey Drives for Victory • Too Early to Tell? No Way • Cross Country Takes 2nd • Soccer Team Struggles Among Tough Competition • Flag Football Follieshttps://digitalcommons.ursinus.edu/grizzlynews/1279/thumbnail.jp

Interview with FRB Officials re 13(3)

Linked is the audiotape to this intervie

A Prospective Study of Risk-Reducing Salpingo-oophorectomy and Longitudinal CA-125 Screening among Women at Increased Genetic Risk of Ovarian Cancer: Design and Baseline Characteristics: A Gynecologic Oncology Group Study

Women who are genetically predisposed to ovarian cancer are at very high risk of developing this disease. Although risk-reducing salpingo-oophorectomy (RRSO) and various screening regimens are currently recommended to reduce ovarian cancer risk, the optimal management strategy has not been established nor have multiple additional issues been adequately addressed. We developed a collaboration among the Clinical Genetics Branch (National Cancer Institute’s Intramural Research Program), the Gynecologic Oncology Group (GOG), and the Cancer Genetics Network to address these issues