16 research outputs found

    Grain and potato production in 19th-century Estonia

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    This article is based on the annual reports of the governors of Estland (Northern Estonia) and Livland. Although the statistical correctness of the information is questionable, it can be used to find out relative tendencies. Especially we are interested in the similarities and differences involved in the economic development of the large estates of Baltic-German landowners

    Typological-regional differences in the development of productive forces and demographic processes in the course of the transformation of European society

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    The transition process from feudalist to capitalist (from dominantly agrarian to dominantly industrial) society developed differently and at a different time in different regions of Europe. The nature of these processes was influenced by the type of the social relations and by the results of the socio-political (revolutionary or by the way of reforms) changes taking place in different ways in different European states. The nature of agricultural development depended on the nature of the economic activity of great landlords and peasantry and on the nature of their mutual relations. The following types of social structure and development can be distinguished in Europe in 18-19th centuries: 1. capitalist farmers - hired workers (England-Northern France), 2. aristocracy - peasant smallholders (Mediterranian, Central Europe), 3. great landowners - free peasant landowners - landless peasantry and hired workers (Scandinavia), 4. the "Junker" type entrepreneur landlord - dependent peasant smallholders - landless peasantry and hired workers (Eastern Europe)

    Spectroscopic studies of IrO2 and Bi2Ir2O7

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    The oxides of iridium, a 5d transition metal, have recently attracted interest in a number of scientific disciplines, ranging from fundamental solid state physics, to more applied areas of research such as spintronics and catalysis. The metallic oxides IrO2 and Bi2Ir2O7, in particular, are known to be good catalysts of the commercially important oxygen evolution reaction; IrO2 has also been identified as a promising material for spin current detection, and Bi2Ir2O7 has received attention due to its unusual magnetic response at low temperatures. In the work reported in this thesis, X-ray photoelectron spectroscopy using an Al Kα photon source (XPS), synchrotron-based hard X-ray photoelectron spectroscopy (HAXPES), X-ray emission spectroscopy (XES), X-ray absorption spectroscopy (XAS), and resonant inelastic X-ray scattering (RIXS) were used to characterize the electronic structures of IrO2 and Bi2Ir2O7. The results were compared to simulated spectra derived from the results of density functional theory calculations performed by collaborators, and analyzed in terms of qualitative models of the electronic structure. Excellent agreement between theory and experiment was observed, especially if the effects of final state lifetime broadening were accounted for. A new formalism was derived that allows final state lifetime effects to be included in band structure based RIXS simulations. The results of the theoretical calculations were also used to analyze the properties of the low energy electronic states in IrO2 and Bi2Ir2O7, and it was found that in both cases there are strong deviations from the predictions of the popular jeff = 1/2 model. The results of preliminary high pressure photoemission measurements of IrO2 are also presented in this thesis, alongside a more detailed discussion of fundamental aspects of this relatively new technique. In particular, the issue of the pressure profile that is formed around the sample and the first aperture in differentially pumped spectrometers is addressed using a combination of experimental measurements and computational fluid dynamics simulations. For the flow of N2 through a 0.3 mm aperture, the calculated pressures at the plane of the sample are tabulated for a range of sample-to-cone distances and pressures of 5.0 mbar, 9.4 mbar and 30 mbar.Open Acces

    Plasmon-Induced Hot Carriers from Interband and Intraband Transitions in Large Noble Metal Nanoparticles

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    Hot electrons generated from the decay of localized surface plasmons in metallic nanostructures have the potential to transform photocatalysis, photodetection, and other optoelectronic applications. However, the understanding of hot-carrier generation in realistic nanostructures, in particular the relative impor- tance of interband and intraband transitions, remains incomplete. Here we report theoretical predictions of hot-carrier generation rates in spherical nanoparticles of the noble metals silver, gold, and copper with diameters up to 30 nm consisting of more than one million atoms obtained from an atomistic linear-scaling approach. As the nanoparticle size increases, the relative importance of interband transitions from d bands to sp bands relative to surface-enabled sp-band to sp-band transitions increases. We find that the hot-hole generation rate is characterized by a peak at the onset of the d bands, while the position of the corre- sponding peak in the hot-electron distribution can be controlled through the illumination frequency. In contrast, intraband transitions give rise to hot electrons, but relatively cold holes. Importantly, increasing the dielectric constant of the environment removes hot carriers generated from interband transitions, while increasing the number of hot carriers from intraband transitions. The insights resulting from our work enable the design of nanoparticles for specific hot-carrier applications through their material composition, size, and dielectric environment

    Frontier orbitals and quasiparticle energy levels in ionic liquids

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    Ionic liquids play an important role in many technological applications and a detailed understanding of their frontier molecular orbitals is required to optimize interfacial barriers, reactivity and stability with respect to electron injection and removal. In this work, we calculate quasiparticle energy levels of ionic liquids using first-principles many-body perturbation theory within the GW approximation and compare our results to various mean-field approaches, including semilocal and hybrid density-functional theory and Hartree–Fock. We find that the mean-field results depend qualitatively and quantitatively on the treatment of exchange–correlation effects, while GW calculations produce results that are in excellent agreement with experimental photoelectron spectra of gas phase ion pairs and ionic liquids. These results establish the GW approach as a valuable tool for understanding the electronic structures of ionic liquids

    Captured by Evil: The Idea of Corruption in Law

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    Corruption is one of the most powerful words in the English language. When it comes to the treatment of corruption by law, however, corruption is a troubled concept. With increasing recognition of the costs of corruption for economic development, democratic governance, international aid programs, and other world goals, attempts to articulate what this destructive force is have led to an avalanche of theoretical writing. In the last fifteen years, corruption has been variously defined as the violation of law, a public servant\u27s breach of public duty, an agent\u27s betrayal of a principal\u27s interests, the pursuit of secrecy, the denial of equality in political influence, and other ways. In the end, however, all of these efforts fall short. Corruption is more than law-breaking: it is more than breaching public duties. To say that A is a thief or that A has breached his duty is not to say that A is corrupt. The latter is far more powerful, far more emotional, far more essential than the others. It is more than secrecy, or the denial of equal opportunity. It is a searing indictment, somehow, not only of A\u27s act but of A\u27s character. It is a statement not only of what A has done, but of what A has become. Corruption is, I argue, a far more powerful idea than these existing legal understandings have articulated: it is the idea of capture by evil, the possession of the individual by evil, in law. Just as we once believed in corruption of the blood in American law, which decreed that offspring of those who had committed crimes were believed to be irrevocably tainted by their parents\u27 depravity, so we still retain - through the idea of corruption - the belief that individual evil extends beyond acts of wrongdoing, or the denial of equal opportunity, or breach of the public trust. It is this idea of corruption, I argue - the idea of capture by evil - that, although unarticulated, drives our understandings of corruption in law. It drives our understanding of corrupt judges, who, once corrupt, we believe will act so in every case. It drives our understanding of campaign finance reform, where we fear deep corruption of the process from the occurrence of corrupt acts. It drives our understanding of corruption as a systemic effect and systemic influence, which presents institutional dangers that are greater than other crimes, and that requires purgation rather than simple law enforcement. This Article explores this deeper understanding of corruption, its impacts in areas such as judicial corruption and campaign finance reform, and its implications for the principle of the rule of law

    À propos de la politique agraire dans les régions baltes au cours des années 1840. Essai d'analyse du développement politique

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    Kahk J. À propos de la politique agraire dans les régions baltes au cours des années 1840. Essai d'analyse du développement politique. In: Annales. Économies, Sociétés, Civilisations. 28ᵉ année, N. 3, 1973. pp. 817-837
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