146 research outputs found
Experimental earthquake duct videos, Seibert et al. 2025
No full textTop and side view videos of experimental runs referenced in the article. Specific experimental parameters are given in the article, referenced by run number.
In general, the videos show sediment entrainment by combinations of high-frequency vertical shaking and steady (low frequency) horizontal fluid flow. Sediments include sands and mixtures of sand, silt, and clay, as detailed in the article.The largest earthquakes are infrequent and poorly understood. We propose that seismic waves from major subduction earthquake ruptures can move the overlaying sea floor relatively to the water vigorously enough to entrain sediment. We used physical tank experiments to test and further develop this model. We show that relative water velocities consistent with long-period earthquake motion can mobilize synthetic fine marine sediment, and that high frequency vertical shaking can enhance this mobilization. Earthquake-induced seafloor motion for Tohoku-like earthquakes can entrain several centimeters of surficial sediment, depending on sediment characteristics including clay type, grain size, water content and salinity. High-frequency vertical shacking can enhance this entrainment. We have validated a new mechanism of co-seismic sediment entrainment in deep-water environments.
The data archived here are videos of these physical tank experiments.National Science Foundation OCE-2044915Seibert, Chloe; Paola, Christopher; McHugh, Cecilia; Seeber, Leonardo; Tucker, James. (2024). Experimental earthquake duct videos, Seibert et al. 2025. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/agg6-xh31
Steering heterogeneous sciences in the Dutch and Italian higher education systems
No full textThis paper studies how the implementation of New Public Management reforms in Higher Education affects the academic bodies’ steering in different national systems and disciplines. It is assumed that the steering capability depends on the characteristics of each system and discipline. The work includes three case studies (two Italian universities and one Dutch university); two research institutes are selected for each university: one HS institute (either Biomedical Sciences or Physics) and one SoSc institute (Management). Evidence confirms that steering capability improves in some disciplines, while other scientific fields remain hardly steerable because the levers are weak, the interest of society and policy makers in research outcomes is small, and the reputational organisations are very influential.Higher Education, Research, Funding, Evaluation, Steering, Governance, Social Sciences, Hard Sciences, New Public Management
Geomorphic evidence for tilting at a continental transform: The Karamursel Basin along the North Anatolian Fault, Turkey
No full textContinental transform boundaries are characterised by regional transcurrent faults that locally slip obliquely and spawn rapidly subsiding and tilting basins. A type example is the North Anatolian Fault (NAF) that accounts for the westward motion of the Anatolian "platelet" relative to Asia at about 25. mm/yr. Many of the basins along the NAF are asymmetric half grabens that border a strand of the NAF on the extensional side of a fault bend and tilt obliquely toward the fault. A prominent example is the 17. km-long Karamursel half graben south of the NAF in Izmit Gulf, one of the starved basins flooded by the Marmara Sea. A tilt rate of 3°/10. kyr has been proposed for the submerged part of the basin within 2. km south of the NAF, on the basis of a tilted early Holocene paleo-shoreline. Very rapid tilt and subsidence have been reported for similar basins along the NAF, but the locus of tilt shifts relative to the basin and is short lived at any one place. We find evidence of recent tilting from surface flow patterns on the steep flank of the basin above the southern coastline, up to 6-8. km from the NAF. Drainage divides between 13 rivers mark a northward 8-10° tilted sub-planar surface that extrapolates down into the basement below the progressively tilted sediments of the basin. River profiles are only slightly concave below this surface. We interpret this as the bevelled surface that preceded tilting, and the immature comb-like drainage to be symptomatic of recent tilt. On the north flank of the basin, the drainage is equally steep but markedly different. It suggests a backward eroding fault scarp. Northward drainage into the Black Sea suggests a subtle but regional northward tilt of the Kocaeli Plateau, possibly a flexural response to unloading along the fault. Along the western NAF, rapid progressive tilting of sediments is typical of submarine transform basins. They provide ground truth for investigating the geomorphic effects of rapid tilting on land.</p
Quantitative differential geomorphology of the Monterey Canyon from time-separated multibeam surveys
No full textMultiple Masculinities in U.S. Military Culture
No full textThe University Archives has determined that this item is of continuing value to OSU's history.The media can be accessed here: http://streaming.osu.edu/knowledgebank/mershon10/022210.mp4Jesse Crane-Seeber is a postdoctoral fellow in the Global Integration Field in the International Graduate School of Social Sciences at the University of Bremen in Bremen, Germany. His research focuses on social and political theories of agency, power, and conflict; epistemology, meaning-making, and empirical social science methodologies; the cultural politics of U.S. military deployments; gender and the U.S. military; and political economy of the U.S. military. Crane-Seeber is co-author with Betsy Crane of "The Four Boxes of Gendered Sexuality: Good Girl/Bad Girl Tough Guy/Sweet Guy," published in Sexual Lives: A Reader on the Theories and Realities of Human Sexuality (New York: McGraw-Hill, 2002). His most recent article, co-authored with Betsy Crane, "Contesting Essentialist Theories of Patriarchal Relations: Evolutionary Psychology and the Denial of History," is currently under review by the Journal of Men's Studies. Crane-Seeber has received numerous awards to conduct his research including the American University School of International Service Dissertation Research Fellowship, the school of International Service Ph.D. Studentship, and the Ithaca College President's Scholarship. He has also been recognized for academic service in the areas of teaching and research at American University and Ithaca College. Crane-Seeber received his M.A. and Ph.D. in International Relations from the School of International Service at American University. He received his B.A. with honors in Resisting Hegemony from Ithaca College.Ohio State University. Mershon Center for International Security Studie
Reply [to “Comment on ‘The 1993 Killari earthquake in central India: A new fault in Mesozoic basalt flows?’ by L. Seeber et al.”]
No full textCorrigendum: EEG beta suppression and low gamma modulation are different elements of human upright walking
No full textA corrigendum on EEG beta suppression and low gamma modulationare different elements of human upright walking by Seeber,M.,Scherer,R.,Wagner,J.,Solis-Escalante,T.,andMüller-Putz,G.R.(2014)Front.Hum. Neurosci.8:485.doi:10.3389/fnhum.2014.00485Biomechanical EngineeringMechanical, Maritime and Materials Engineerin
The transformation of steering and governance in Higher Education: funding and evaluation as policy instruments.
No full textThis paper focuses on policy implementation in higher education (HE) to be analysed through the evolution and transformation of the policy instruments, namely those related to the Government funding and evaluation. The research questions are: to what extent instruments can reveal the evolution of policy rationales and justifications? How instruments emerged, and become institutionalised, affecting and being affected by the characteristics of national configuration of HE systems? Whether and how they produce desired effects or evolve in unpredictable ways, generating unexpected results, playing new roles and functionalities? The evolution of the instruments seems to be dependent on some characteristics of the context and some key features of the instruments. The development has been often inspired by NPM principles, which aimed at increasing steering capacity of the policy maker on one side, and university role and autonomy on the other. The common narrative is then declined in very different ways among countries, and instruments implementation reveals the extent to which it is adapted to the existing characters (dominant paradigm) of the HE system.Higher Education, Funding, Evaluation, Policy instruments, Policy implementation
Reviewing the Osteotropism in Neuroendocrine Tumors: The Role of Epithelial-Mesenchymal Transition
No full textBackground: Neuroendocrine tumors (NETs) metastasize to the bone. However, the incidence, clinical features, management and pathogenesis of bone involvement in NET patients have been poorly investigated. Methods: We reviewed all published reports of histologically confirmed bone metastatic NETs and explored clinical, radiological, prognostic and therapeutic characteristics in a population of 152 patients. We then evaluated immunohistochemical expression of a panel of eight epithelial-mesenchymal transition (EMT)-related factors including SNAIL, TGF-β1, CTGF, IL-11, PTHrP, EpCAM, CXCR4 and RANK in an independent cohort of 44 archival primary NETs. Biomarker expression was correlated with clinicopathological variables, including skeletal involvement, and tested for survival prediction. Results: We found that 55% of NET patients with bone metastases were male, with a median age of 55 years at diagnosis. Metastases were restricted to the skeleton in 34% of the NET population, and axial and osteoblastic lesions were prevalent. NETs differently expressed proteins involved in EMT activation. High CXCR4 (p < 0.0001) and low TGF-β1 levels (p = 0.0015) were significantly associated with increased risk of skeletal metastases, suggesting that EMT is implicated in NET osteotropism. By applying an algorithm measuring distinct immunohistochemical predictors of osteotropism on primary tumors, we were able to identify NET patients with bone metastases with a sensitivity and specificity of 91 and 100%, respectively (p < 0.0001). Patients whose primary tumors expressed CTGF (p = 0.0007) as well as the truncated form of EpCAM (p = 0.06) showed shorter survival. Conclusion: Although underestimated, bone metastases are a prominent feature of NETs, and the tumor expression of EMT markers at diagnosis may predict concurrent or subsequent skeleton colonization
Author Correction: Species richness and beta diversity patterns of multiple taxa along an elevational gradient in pastured grasslands in the European Alps (Scientific Reports, (2020), 10, 1, (12516), 10.1038/s41598-020-69569-9)
No full textCorrection to: Scientific Reportshttps://doi.org/10.1038/s41598-020-69569-9, published online 27 July 2020 The original version of the Article contains an error. The Data Availability section is incomplete. “All species recorded during this study are included in Supplementary Information files of this article.” should read: “The datasets generated and analyzed during this study are not publicly available due to the presence of rare and endangered species at the study sites. However, they are available from the corresponding author upon reasonable request. Site locations and a list of all species recorded in this study are included in the Supplementary Information files of this article.
- …
