Rural tourism is a long-established practice in the industrialised West, but it is a comparatively recent and on-going development in postsocialist contexts. This thesis examines the development of rural tourism in Romania and draws on fieldwork carried out in one of the oldest and most popular destinations of the country, as well as in a newer and less visited location. As homestays are central to rural tourism, my research has an extensive focus on what happens with guesthouses and their owners. Countryside tourism is a practice grounded in a discourse that praises images of unspoilt nature, close-knit communities, material and cultural heritage and natural healthy food. Discourses about rurality also suggest that for city dwellers, village stays in their own countries can provide a way of getting in touch with their national identity, building, at the same time a sense of belonging. In Romania, such discourses are promoted by NGOs, state institutions and tour operators that aim to develop rural tourism. In spite of their efforts, in the destinations that I studied, rural tourism has strayed away from the ideal model. Instead of bucolic cottages inspired by the vernacular architecture of the region, hosts welcome their guests into large, modern villas equipped with state-of-the art amenities. Tourists too show a strong concern with material aspects of their accommodation, they rarely venture in outdoor pursuits and have little interest in notions of ‘heritage’ or ‘traditions’. My findings show that the lived experiences of local entrepreneurs have shaped worldviews that in many respects are at odds with the ideal models and best tourism practices promoted by various institutions. I also show how hosts and guests share similar notions of achievement and success and how this has turned rural tourism into a house-centred event. In explaining why discourses have little grounding in reality, I pay close attention to the economics of tourism, trying to understand guesthouses as businesses interlinked both with the wider forces of the market and with the socio-economic history of rural Romania. I show how the development of pensiuni was influenced by specific material and social constraints, arguing that a long history of living under oppressive regimes actually endowed locals with qualities that made them ready to embark on entrepreneurial pursuits. I also examine how kinship can be both a catalyst for growth and a factor that contributes to the stagnation or decline of businesses. Most notably, however, it was the unstable and burdensome legislative environment that had perhaps the strongest impact over the evolution of guesthouses, determining over half of the owners to stay in the shadow economy. My findings raise questions about the effectiveness and utility of many of the norms currently imposed on tourist entrepreneurs and I conclude by discussing a few ways in which institutions could respond better to the needs of guesthouse owners.

European integration is a curious concept. There is stark disparity between some areas of policy that seemingly glide through the integration process, while others lag behind and despite decades of attempts, never reach the status of a fully-fledged area of European Union competence. Once such area is education. Through integration theories, political scientists have sought to explain how policies develop and are implemented at European level. This interdisciplinary study borrows the opposing theories of neofunctionalism and intergovernmentalism with the aim of identifying the influence of the supranational and the strength of the state in the evolution of a European Union education policy. It seeks to pinpoint how education can be placed within the construction of Europe and the process of early European integration to determine the feasibility of these integration theories in explaining the journey of education policy in the European context. Historical methodology is adopted, based on archival research at the Historical Archives of the European Union, using documentary analysis to trace the history of activities and initiatives relating to education between 1945-1976. Collective biography methodology is adopted to give space to the role of states in driving the scope, direction and extent of integration based on domestic interests, while a case study implements methodological triangulation to stress-test the case of education. The study proposes that education is a complex case that does not slot neatly into a theory of integration. Education is multifaceted, a cultural – while at the same time – economic component: it is woven into the fabric of nation-states, it contributes to increasing global competitiveness, it diversifies across borders, and its development is attached to temporality and context. Despite suggestions that the state is diminishing in power, education serves as an example to demonstrate that the state is very much alive and at the centre of certain areas of policy development at European level.

Like consociationalism and territorial pluralism, centripetalism is a multiculturalist way of managing ethno-cultural diversity. Many scholars have examined how a consociational or territorial pluralist formula might help Turkey to resolve its long-running Kurdish problem. To date, no one has paid enough attention to the merits of centripetalism by scrutinising whether they might contribute to the solution of the problem. There is a general neglect of centripetal solution in the academic literature on Turkey's Kurdish question. As an interdisciplinary study, this thesis seeks to fill the centripetal research gap in the literature. The thesis argues that neither consociationalism nor territorial pluralism might be the optimal multiculturalist approach that Turkey should embrace in resolving its Kurdish issue. The thesis comes up with an original centripetal formula for the resolution of the issue. The proposed formula is constructed on the following three cornerstones: 1) a parliamentary system which is built on a 560-member legislature elected via an original version of the Alternative Vote Plus electoral system; 2) asymmetric territorial autonomy for each Kurdish-populated province; and 3) cultural autonomy for individual Kurds residing in the Turkish-dominated provinces. According to the thesis, this centripetal formula might enable Turkey to satisfy or begin to satisfy all main Kurdish demands, the fulfilment of which is regarded by almost all segments of Kurdish society as the basic requirement for the solution of the Kurdish problem. The formula might also create a multiculturalist Turkey less likely to witness some problematic political scenarios that would happen should the Republic establish a consociational or territorial pluralist model for the solution of the problem.

Russian entrepreneurs have long faced considerable difficulties. While much is known about what these difficulties are, less is known about how entrepreneurs respond to them, what it is like to be an entrepreneur under these circumstances and why they bother in the first place. In this thesis I address these questions by conducting a multi-sited ethnography within three small Siberian enterprises, observing the directors as they conduct their everyday business. I find that these entrepreneurs all resent their vulnerable position in the political economy but that they have developed a capacity to survive or thrive in spite of the obstacles and threats they encounter. This capacity, I argue, is less a consequence of their commercial acumen than their understanding of what can be achieved given their particular circumstances, their knowledge that business-state relations take an informal, personalised form, and their preparedness to resist predatory outsiders. This leads me to reconsider the meaning of entrepreneurship in the Russian context. Furthermore, my informants’ agency presents a challenge to the idea in predominant political economic theories that the Russian state dominates the private sector. I therefore reconceptualise business-state relations using Douglass C. North et al’s Limited Access Order theory in combination with my empirical materials. This provides a more accurate theory that accepts the pre-eminent role of the state in the political economy while accommodating the agency displayed by my informants.

"Laser flash spectroscopy of photosystem II" Photosystem II (PS II) of plants and cyanobacteria oxidizes water in a light-powered reaction. Thereby, this protein is the ultimate source of the atmospheric oxygen. The capacity to oxidize water is owed to two properties of PS II: (i) The midpoint potential of the oxidizing chlorophyll moiety is increased by 0.6 V compared to photosystem I or photochemical reaction centers of anoxygenic bacteria, and (ii) the energy requirements of the four steps needed for the tetravalent oxidation of water are adapted to the energy of red light quanta. This thesis deals with two particular aspects, namely: 1. The coupling of the electron transfer from tyrosine Z (YZ) to the primary donor (P680+) to proton transfer, and an inquiry on the role of a positive charge on YZox (plus base cluster) in increasing the oxidizing potential at the catalytic site. 2. The localization of the electron hole, P680+, among the excitonically coupled four inner chlorophyll a molecules, and an estimation of the midpoint potential differences between them. Electron-proton-coupling by YZ This study was carried out with PS II core complexes from spinach or pea with a deactivated (removed) manganese cluster. The reduction of P680+ was investigated as a function of pH by detecting the laser flash induced absorption changes with nanosecond resolution. Two kinetic components were found with different pH-dependence and activation energies. The alteration of kinetic parameters by H/D isotope substitutions or by addition of divalent cations implied two different types of YZ-oxidation: At acidic pH the electron transfer was coupled with proton transfer, whereas in the alkaline region it was more rapid and no longer controlled by proton transfer. The conversion between both mechanisms occured at pH 7.4. This value corresponds either to the apparent pK of YZ itself (i.e. of the hydroxy group of the phenol ring) or to the pK of an acid-base-cluster, which includes YZ. Independent measurements of pH-transients by following the absorption changes of hydrophilic proton indicators corroborated this notion. The data were interpreted as indicating that the phenolic proton of YZ was released into the medium at acidic, but not at alkaline pH. The electron transfer and proton release characteristics of intact, oxygen-evolving PS II resembled those in deactivated samples kept at alkaline pH. We concluded that the electron transfer from YZ to P680+ in the native system was not coupled with proton transfer into the bulk. This has shed doubt on a popular hypothesis on the role of YZ as 'hydrogen abstractor' from bound water. On the other hand, the energetic constraints of water oxidation could be eased by the positive upcharging during oxidation of YZox plus its base cluster. On the localization of the electron hole of P680+ Photooxidation of PS II oxidizes the set of four innermost chlorophyll a molecules giving rise to the only spectroscopically defined species P680+. The deconvolution of difference spectra into bands of pigments is ambiguous. By using photoselective excitation of antennae, i.e. chl a molecules with site specific energies at the long wavelength border of the mean Qy-band, and by polarized detection, it was possible to tag P680+QA-/P680QA and 3P680/P680 difference spectra with a further parameter, the (wavelength-dependent) anisotropy r. Results obtained at liquid nitrogen temperature (77 K) can be clearly interpreted in terms of two chl a monomer bands. The two main components of the P680+QA-/P680QA difference spectrum were marked by two distinct values of the anisotropy and could be interpreted in a straightforward manner: the bleaching of a band at 675 nm belonging to the charged species (chl a+) and an electrochromic blue-shift of a nearby chl a from 684 to 682 nm. The main bleaching band of the 3P680/P680 spectrum (at 77 K) can be apparently attributed to a third (or several) chl a component(s). The analysis of the P680+QA-/P680QA spectrum at cryogenic temperature is compatible with monomeric chl a bands. On the other hand, one could assume a system of excitonically coupled core pigments, as it was recently introduced in the literature on the basis of energy transfer studies ('multimer model'). However, in view of the clear indications for an electrochromic band shift and the location of the bleaching band, which absorbs in a wavelength region of monomeric chl a, one assumption of the 'multimer model' should be questioned. Presumably, the excitonic couplings are rather weak, in particular between each of the two central chl a-molecules (PA/PB) and its respective accessory chl a (BA/BB), because of (i) the distances and (ii) different site energies of the monomeric chromophores. At room temperature, the absorption difference and anisotropy spectra of P680+QA-/P680QA were clearly altered. The anisotropy data indicated that the changes could no longer exclusively be ascribed to thermal broadening of individual bands. The localization of the positive charge on one pigment, analogous to the situation at 77 K, was now unlikely. Hence, the midpoint potential differences between the inner four chlorophyll a molecules were small and were estimated as approximately 15 meV.