A short history of the Tower of London ; with a list of the interesting curiosities contained in the armories and regalia /

Title vignette.

The history and antiquities of the Tower of London, with biographical anecdotes of royal and distinguished persons, deduced from records, state-papers, and manuscripts, and from other original and authentic sources.

Paged continuously.

"My merry Rockhurst"; being some episodes in the life of Viscount Rockhurst, a friend of King Charles the Second, and at one time constable of His Majesty's tower of London,

Mode of access: Internet.

Authorized guide to the Tower of London.

Mode of access: Internet.

Account of the royal hospital and collegiate church of Saint Katharine, near the Tower of London.

Mode of access: Internet.

Tower of ivory; a novel,

Mode of access: Internet.

La torre de los vientos en Atenas

Hacemos una breve historia del edificio conocido como Torre de los Vientos construido en el barrio de Plaka en Atenas desde sus posibles orígenes hasta la actualidad; añadimos sus funciones religioso-meteorológicas y a partir de grabados ilustrativos reconstruimos sus avatares arquitectónicos; nos interesan especialmente los frisos de los ocho vientos con sus orientaciones y función, que describimos y en particular el Notos o Auster, nombre que el Centro de Estudios Latinos ha elegido para su publicación

La torre de los vientos en Atenas

Hacemos una breve historia del edificio conocido como Torre de los Vientos construido en el barrio de Plaka en Atenas desde sus posibles orígenes hasta la actualidad; añadimos sus funciones religioso-meteorológicas y a partir de grabados ilustrativos reconstruimos sus avatares arquitectónicos; nos interesan especialmente los frisos de los ocho vientos con sus orientaciones y función, que describimos y en particular el Notos o Auster, nombre que el Centro de Estudios Latinos ha elegido para su publicación

La torre de los vientos en Atenas

Hacemos una breve historia del edificio conocido como Torre de los Vientos construido en el barrio de Plaka en Atenas desde sus posibles orígenes hasta la actualidad; añadimos sus funciones religioso-meteorológicas y a partir de grabados ilustrativos reconstruimos sus avatares arquitectónicos; nos interesan especialmente los frisos de los ocho vientos con sus orientaciones y función, que describimos y en particular el Notos o Auster, nombre que el Centro de Estudios Latinos ha elegido para su publicación

A process-based evaluation of dust-emitting winds in the CMIP5 simulation of HadGEM2-ES

Despite the importance of dust aerosol in the Earth system, state-of-the-art models show a large variety for North African dust emission. This study presents a systematic evaluation of dust emitting-winds in 30 years of the historical model simulation with the UK Met Office Earth-system model HadGEM2-ES for the Coupled Model Intercomparison Project Phase 5. Isolating the effect of winds on dust emission and using an automated detection for nocturnal low-level jets (NLLJs) allow an in-depth evaluation of the model performance for dust emission from a meteorological perspective. The findings highlight that NLLJs are a key driver for dust emission in HadGEM2-ES in terms of occurrence frequency and strength. The annually and spatially averaged occurrence frequency of NLLJs is similar in HadGEM2-ES and ERA-Interim from the European Centre for Medium-Range Weather Forecasts. Compared to ERA-Interim, a stronger pressure ridge over northern Africa in winter and the southward displaced heat low in summer result in differences in location and strength of NLLJs. Particularly the larger geostrophic winds associated with the stronger ridge have a strengthening effect on NLLJs over parts of West Africa in winter. Stronger NLLJs in summer may rather result from an artificially increased mixing coefficient under stable stratification that is weaker in HadGEM2-ES. NLLJs in the Bodélé Depression are affected by stronger synoptic-scale pressure gradients in HadGEM2-ES. Wintertime geostrophic winds can even be so strong that the associated vertical wind shear prevents the formation of NLLJs. These results call for further model improvements in the synoptic-scale dynamics and the physical parametrization of the nocturnal stable boundary layer to better represent dust-emitting processes in the atmospheric model. The new approach could be used for identifying systematic behavior in other models with respect to meteorological processes for dust emission. This would help to improve dust emission simulations and contribute to decreasing the currently large uncertainty in climate change projections with respect to dust aerosol.

Dynamic investigation of an ancient masonry bell tower with operational modal analysis: a non-destructive experimental technique to obtain the dynamic characteristics of a structure

This paper shows the results of an experimental analysis on the bell tower of “Chiesa della Maddalena” (Mola di Bari, Italy), to better understand the structural behavior of slender masonry structures. The research aims to calibrate a numerical model by means of the Operational Modal Analysis (OMA) method. In this way realistic conclusions about the dynamic behavior of the structure are obtained. The choice of using an OMA derives from the necessity to know the modal parameters of a structure with a non-destructive testing, especially in case of cultural-historical value structures. Therefore by means of an easy and accurate process, it is possible to acquire in-situ environmental vibrations. The data collected are very important to estimate the mode shapes, the natural frequencies and the damping ratios of the structure. To analyze the data obtained from the monitoring, the Peak Picking method has been applied to the Fast Fourier Transforms (FFT) of the signals in order to identify the values of the effective natural frequencies and damping factors of the structure. The main frequencies and the damping ratios have been determined from measurements at some relevant locations. The responses have been then extrapolated and extended to the entire tower through a 3-D Finite Element Model. In this way, knowing the modes of vibration, it has been possible to understand the overall dynamic behavior of the structure.

On the Construction of Codes from an Asymptotically Good Tower over F8

In 2002, van der Geer and van der Vlugt gave explicit equations for an asymptotically good tower of curves over the field F8. In this paper, we will present a method for constructing Goppa codes from these curves as well as explicit constructions for the third level of the tower. The approach is to find an associated plane curve for each curve in the tower and then to use the algorithms of Haché and Le Brigand to find the corresponding Goppa codes.

Functional magnetic resonance brain imaging of executive cognitive performance in young first-episode schizophrenia patients and age-matched long-term cannabis users

Converging evidence from epidemiological, clinical and neuropsychological research suggests a link between cannabis use and increased risk of psychosis. Long-term cannabis use has also been related to deficit-like “negative” symptoms and cognitive impairment that resemble some of the clinical and cognitive features of schizophrenia. The current functional brain imaging study investigated the impact of a history of heavy cannabis use on impaired executive function in first-episode schizophrenia patients. Whilst performing the Tower of London task in a magnetic resonance imaging scanner, event-related blood oxygenation level-dependent (BOLD) brain activation was compared between four age and gender-matched groups: 12 first-episode schizophrenia patients; 17 long-term cannabis users; seven cannabis using first-episode schizophrenia patients; and 17 healthy control subjects. BOLD activation was assessed as a function of increasing task difficulty within and between groups as well as the main effects of cannabis use and the diagnosis of schizophrenia. Cannabis users and non-drug using first-episode schizophrenia patients exhibited equivalently reduced dorsolateral prefrontal activation in response to task difficulty. A trend towards additional prefrontal and left superior parietal cortical activation deficits was observed in cannabis-using first-episode schizophrenia patients while a history of cannabis use accounted for increased activation in the visual cortex. Cannabis users and schizophrenia patients fail to adequately activate the dorsolateral prefrontal cortex, thus pointing to a common working memory impairment which is particularly evident in cannabis-using first-episode schizophrenia patients. A history of heavy cannabis use, on the other hand, accounted for increased primary visual processing, suggesting compensatory imagery processing of the task.