Vertical (sub)urbanization in Zurich’s northeast: The Valley along the Glatt as both a metaphor and mediating structural element

in Aguiar, Luis; Senese, Donna; French, Diana (Eds.) The Elgar Companion to Valleys: Social, Economic and Cultural Perspectives (2023)

Vertical Caisson Breakwaters Cyclically Loaded

in 11th Baltic Sea Geotechnical Conference on Geotechnics in Maritime Engineering (2008, September)

Aim of this paper is analysing the breakwater foundation behaviour observed during centrifuge tests performed at the laboratory of GeoDelft (The Netherlands). Dynamic centrifuge tests were performed on a ... [more ▼]

Aim of this paper is analysing the breakwater foundation behaviour observed during centrifuge tests performed at the laboratory of GeoDelft (The Netherlands). Dynamic centrifuge tests were performed on a model caisson breakwater, founded on medium-dense sand. The structure was subjected to cyclic horizontal loading simulating regular and irregular wave loading, until failure occurred. The tests were aimed at finding a critical failure mechanism, investigating the influence of the loading scheme and analysing the development of instantaneous pore pressures and residual pore pressures in the sandy subsoil. Test results showed high instantaneous values of excess pore pressures underneath the structure, not leading to a complete “liquefaction flow” failure. Dilation phenomena of sand induced local “recovering” of strength during each cycle and failure occurred according to a progressive mechanism with large cyclic strains. [less ▲]

Vertical deformations from homogeneously processed GRACE and global GPS long-term series

in Journal of Geodesy (2011)

Temporal variations in the geographic distribution of surface mass cause surface displacements. Surface displacements derived from GRACE gravity field coefficient time series also should be observed in ... [more ▼]

Temporal variations in the geographic distribution of surface mass cause surface displacements. Surface displacements derived from GRACE gravity field coefficient time series also should be observed in GPS coordinate time series, if both time series are sufficiently free of systematic errors. A successful validation can be an important contribution to climate change research, as the biggest contributors to mass variability in the system Earth include the movement of oceanic, atmospheric, and continental water and ice. In our analysis, we find that if the signals are larger than their precision, both geodetic sensor systems see common signals for almost all the 115 stations surveyed. Almost 80% of the stations have their signal WRMS decreased, when we subtract monthly GRACE surface displacements from those observed by GPS data. Almost all other stations are on ocean islands or small peninsulas, where the physically expected loading signals are very small. For a fair comparison, the data(79 months from September 2002 to April 2009) had to be treated appropriately: the GPS data were completely reprocessed with state-of-the-art models. We used an objective cluster analysis to identify and eliminate stations,where local effects or technical artifacts dominated the signals. In addition, it was necessary for both sets of results to be expressed in equivalent reference frames, meaning that net translations between the GPS and GRACE data sets had to be treated adequately. These data sets are then compared and statistically analyzed: we determine the stability (precision) of GRACEderived, monthly vertical deformation data to be ∼1.2 mm, using the data from three GRACE processing centers. We statistically analyze themean annual signals, computed from the GPS and GRACE series. There is a detailed discussion of the results for five overall representative stations, in order to help the reader to link the displayed criteria of similarity to real data. A series of tests were performed with the goal of explaining the remaining GPS–GRACE residuals. [less ▲]

Vertical differentiation in a Cournot industry: The Porter hypothesis and beyond

in Resource and Energy Economics (2012)

Vertical Division of Competences and the European Union’s External Objectives

in Cremona, Marise (Ed.) The Court of Justice of the European Union and External Relations Law – Constitutional Challenges (2014)

Vertical division of external competences pursuing external action and internal objectives. Vertical division of external competences and global approach of the external action of the Union.

Vertical Double-Gate MOSFETs

in Proc. 5th Intern. Conf. Advanced Semicon. Dev. & Microsystems ASDAM’04 (2004)

Vertical Land Movements and Sea Level Changes around South Georgia Island

Poster (2018, April 09)

South Georgia Island in the Southern Atlantic Ocean is a key location for the seismic, geomagnetic and oceanic global monitoring networks. In its sub-Antarctic location, the island is largely covered by ... [more ▼]

South Georgia Island in the Southern Atlantic Ocean is a key location for the seismic, geomagnetic and oceanic global monitoring networks. In its sub-Antarctic location, the island is largely covered by mountain glaciers which have been reported to be retreating due to climatic change. Furthermore, during past glaciation periods the island and its shelf area have been ice covered as was revealed by scarring of the sub-oceanic topography. Together with ongoing tectonics along the North Scotia Ridge, these processes have the ability to produce significant uplift on local to regional scales, affecting the measurements of the tide gauge (GLOSS ID 187) at King Edward Point (KEP). Furthermore, with its mid-ocean location, the tide gauge is of particular interest to satellite altimetry calibrations over the Southern Atlantic and Southern Oceans. With the establishment of five GNSS stations on the islands during 2013 to 2015 and the scientific analysis of these data within the global network of stations of the International GNSS Service Tide Gauge Benchmark Monitoring (TIGA) working group, it has now become possible to study present-day vertical land movements of the region and their impacts on, for example, regional sea level. Furthermore, together with four precise levelling campaigns of the KEP benchmark network in 2013, 2014 and two in 2017, it has also been possible to investigate the very local character of the vertical motions near KEP, ie. the stability of the jetty upon which the tide gauge is mounted. In this study, we will present the still preliminary results from the GNSS and levelling measurements and will discuss their impact on the sea level record from the KEP tide gauge. Our measurements show that while South Georgia Island and the area around KEP are rising, the jetty and tide gauge are subsiding, leading to a disagreement in the observed sea level change from the tide gauge and satellite altimetry. In order to improve the agreement between these sea level measurements both local and regional vertical land movements need to be monitored. [less ▲]

Vertical p-MOSFETs with gate oxide deposition before selective epitaxial growth

in Solid-State Electronics (1999), 43(1999), 529-535

A novel vertical MOSFET concept using selective epitaxial growth by low pressure chemical vapor deposition is proposed and the ®rst p-channel device characteristics measured are described. In contrast to ... [more ▼]

A novel vertical MOSFET concept using selective epitaxial growth by low pressure chemical vapor deposition is proposed and the ®rst p-channel device characteristics measured are described. In contrast to other MOS technologies, the gate oxide is deposited before epitaxy, and therefore it exists before the channel region is grown. Compared to planar layouts, the vertical layout increases the packing density without the use of advanced lithography; the extent of the increase depends on application. Compared to other vertical transistors, this concept reduces overlap capacitance and o ers the possibility of three-dimensional integration. Vertical p channel MOSFETs with a channel length LG down to 130 nm and a gate oxide thickness dox down to 12 nm have been fabricated and yield a transconductance of 100 mS mm-1. [less ▲]

Vertical Sovereignty, Horizontal Constitutionalism, Subterranean Capitalism: A Case of Competing Retroactivities

in South African Journal on Human Rights (2010), 26(1), 102-129

Vertiges adolescents : La violence dans Amok de Tullio Forgiarini et ses adaptations

in Cultural Express (in press)