1,672 research outputs found
Computation of optimal transport on discrete metric measure spaces
No full textErbar M, Rumpf M, Schmitzer B, Simon S. Computation of optimal transport on discrete metric measure spaces. Numer. Math. 2020;144(1):157-200
B. Rumpf s/m Landolt z. fr. Erinn
No full textDedikationssilhouette nach links von einem Herr Rumpf, gewidmet Johann Heinrich Landolt (1831-1885)Anonyme/r Künstler/inAngaben zum Widmungsempfänger gemäss interner NotizHandschriftliche Widmung unterhalb des Bildes "B. Rumpf s[eine]m Landolt z[ur] fr[eundlichen] Erinn[erung]
Recovering Identity
No full textRecovering Identity examines a critical tension in criminalized women’s identity work. Through in-depth qualitative and photo-elicitation interviews, Cesraéa Rumpf shows how formerly incarcerated women engaged recovery and faith-based discourses to craft rehabilitated identities, defined in opposition to past identities as “criminal-addicts.” While these discourses made it possible for women to carve out spaces of personal protection, growth, and joy, they also promoted individualistic understandings of criminalization and the violence and dehumanization that followed. Honoring criminalized women’s stories of personal transformation, Rumpf nevertheless strongly critiques institutions’ promotion of narratives that impose lifelong moral judgment while detracting attention from the structural forces of racism, sexism, and poverty that contribute to women’s vulnerability to violence.
“A deeply moving account of the indignity that women who are criminalized experience as they fight for their freedom. Cesraéa Rumpf’s sharp critique demands that we see the violence of incarceration and deepen our commitment to justice for criminalized women.” — BETH E. RICHIE , coauthor of Abolition. Feminism. Now.
“Recovering Identity makes a major contribution to the study of gender, race, and culture in the era of mass incarceration. Rumpf’s comprehensive analysis of how women counter the negative effects of the criminal legal system is timely, thoroughly researched, and persuasive.” — KEESHA M. MIDDLEMASS, author of Convicted and Condemned: The Politics and Policies of Prisoner Reentry
“Rumpf persuasively demonstrates how 12-step ideology obscures the structural forces driving mass incarceration. A sensitive, rigorous, and compelling contribution.” — MELISSA THOMPSON, coauthor of Motherhood after Incarceration: Community Reintegration for Mothers in the Criminal Legal Syste
De cancro
No full textQuas ... Pro consequendis Summis in Arte Medica privilegiis, & insignibus Doctoralibus, ... publice examinandas proponit, M. Christianus Rumphius Witgenstenio-Lasphensis Ad diem 6. Maii, horis & loco solitis. ...Mit ZierinitialeEnthält 56 ThesenDiss. med. Basel, 160
Asteroid impact risk
No full textAsteroid impacts are a hazard to human populations. A method to assess the impact risk of hazardous asteroids was developed in this work, making use of the universal concept of risk culminating in the Asteroid Risk Mitigation Optimization and Research (ARMOR) tool. Using this tool, the global spatial risk distribution of a threatening asteroid can be calculated and expressed in the units of expected casualties (= fatalities). Risk distribution knowledge enables disaster managers to plan for a potential asteroid impact through identification of high risk regions and estimation of total risk as a scalar value. Expressing the risk in terms of expected casualties would allow the placement of the asteroid threat on the same scale as other human hazards. Thus, this unit provides an accessible way of defining thresholds for asteroid threat response protocols, of communicating the threat utilizing a new hazard scale, and of allocating adequate resources to address the hazard by comparison with other natural disasters. To accomplish risk estimation, vulnerability models were needed that relate the severity of impact effects (wind blast, overpressure shock, thermal radiation, cratering, seismic shaking, ejecta out-throw, and tsunami) on the human population and a novel comprehensive suite of such models were derived and presented. The need for high fidelity impact effect and vulnerability modelling, as opposed to a simplified, impact location based approach, for risk estimation of a specific asteroid threat was analysed and confirmed. Subsequently, the method of ARMOR was applied to asteroid 2015 RN35 to produce an example risk distribution output. Additional analysis shows that the general impact location distribution of asteroids is approximately uniform, confirming, for the first time, a common assumption made in planetary defense. Extensive global simulations were performed utilizing an artificial sample of 50,000 impactors with sizes up to 400m to identify which impact effects are most hazardous to the human population. Aerothermal effects are most hazardous while tsunamis only contribute moderately to the overall hazard. The average land impactor is an order of magnitude more dangerous than a similar water impactor and asteroids smaller than 50-60m (density ≈ 3100 kg/m3) are expected to airburst rather than reach the surface. Furthermore, the average loss estimate for asteroid impactors enables fast threat analysis of newly discovered asteroids and helps determine the asteroid size that contributes most to the residual asteroid impact risk. These results provide new insights to inform efficient preparation for a future asteroid threat. In the future, ARMOR can be used to perform on-ground risk driven asteroid detection mission design which would reduce risk of an incoming asteroid progressively and this is not accomplished with current methods
A cascadic geometric filtering approach to subdivision
No full textA new approach to subdivision based on the evolution of surfaces under curvature motion is presented. Such an evolution can be understood as a natural geometric filter process where time corresponds to the filter width. Thus, subdivision can be interpreted as the application of a geometric filter on an initial surface. The concrete scheme is a model of such a filtering based on a successively improved spatial approximation starting with some initial coarse mesh and leading to a smooth limit surface. In every subdivision step the underlying grid is refined by some regular refinement rule and a linear finite element problem is either solved exactly or, especially on fine grid levels, one confines to a small number of smoothing steps within the corresponding iterative linear solver. The approach closely connects subdivision to surface fairing concerning the geometric smoothing and to cascadic multigrid methods with respect to the actual numerical procedure. The derived method does not distinguish between different valences of nodes nor between different mesh refinement types. Furthermore, the method comes along with a new approach for the theoretical treatment of subdivision. © 2002 Elsevier Science B.V. All rights reserved
Effect of wood ash on soil chemistry of a pine stand in Northern Germany
No full textAddition of wood ash to acid soils will affect the soil chemistry of forests in a number of ways which were assessed for a pine stand in northern Germany. A field experiment was carried out in a fifty-year old pine stand on a sandy Podzol at Fuhrberg (Luneburger Heide, Lower Saxony/Germany) which involved depositing wood ash (2.4 t ha(-1)) on the surface. Soil solution chemistry was investigated monthly at different depths for 24 months. Prior to and 19 months after the ash addition, exchangeable cations and amounts of heavy metals were determined at different depths. Two to four months after addition of wood ash, maximum mean concentrations in the soil solution of Ca were 240 mu mol l(-1) at 0 cm (surface of mineral soil) and 100 mu mol l(-1) at 100 cm and of K 980 mu mol l(-1) and 140 mu mol l(-1), respectively. The pH values in soil solutions dropped temporarily by 0.3 units at 0 and 10 cm depth. Nitrate concentrations increased at all depths and maximum mean concentration was 230 mu mol l(-1) at 100 cm. Concentrations of Pb and Cr in soil solution did not change significantly (p < 0.05) after ash addition. Concentrations of Cd and Zn increased significantly at some depths but stayed well below the legal limit for drinking water and below the limits given by the German recommendation for soil conservation. Nineteen months after ash addition, the cation exchange capacity (corrected for the release of cations from the ash) of the upper 6 cm of the organic layer was almost doubled and amounts of exchangeable Ca and Mg increased significantly in the upper 8 cm of the organic layer. Amounts of Zn were increased in the entire organic layer, but changes were significant only in the upper 4 cm. The results of is study suggest that ash from untreated wood (using modest additions) may be recommended for amelioration of forest soils
G. E. Rumpf, The Poison Tree. Selected writings of Rumphius on the natural history of the Indies, éd., transl. E. M. Beekman
No full textG. E. Rumpf, The Poison Tree. Selected writings of Rumphius on the natural history of the Indies, éd., transl. E. M. Beekman. In: Revue d'histoire des sciences, tome 37, n°3-4, 1984. pp. 370-371
G. E. Rumpf, The Poison Tree. Selected writings of Rumphius on the natural history of the Indies, éd., transl. E. M. Beekman
No full textG. E. Rumpf, The Poison Tree. Selected writings of Rumphius on the natural history of the Indies, éd., transl. E. M. Beekman. In: Revue d'histoire des sciences, tome 37, n°3-4, 1984. pp. 370-371
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