MINERALOGY OF MEDIEVAL SLAGS FROM LEAD AND SILVER SMELTING (BOHUTÍN,PŘÍBRAM DISTRICT,CZECH REPUBLIC): TOWARDS ESTIMATION OF HISTORICAL SMELTING CONDITIONS*

Slags from the Pb/Ag medieval (14th century) smelting plant located at Bohutín, P?íbram district, Czech Republic, were studied from the mineralogical and geochemical points of view. Two types of slags were distinguished: (i) quenched slags formed mainly by Pb‐rich glass and unmelted residual grains of SiO₂ and feldspars, and (ii) crystallized slags mainly composed of Fe‐rich olivine (fayalite) and glass. The mean log viscosity value of the slags calculated for 1200°C was 2.119 Pa s. The morphology of olivine crystals was used to estimate the cooling rates of the melt, for some slags indicating rates > 1450°C/h. The projection of the bulk composition of slags onto the SiO₂–PbO–FeO ternary system was used for rough temperature estimates of slag formation, lying probably between 800 and 1200°C.     

Oaks,tree-rings and wooden cultural heritage: a review of the main characteristics and applications of oak dendrochronology in Europe

We overview the recent development of oak dendrochronology in Europe related to archaeology and art-history. Tree-ring series of European oaks (Quercus robur and Q. petraea) have provided a reliable framework for chronometric dating and reconstruction of past climate and environment. To date, long oak chronologies cover almost the entire Holocene, up to 8480 BC and the network over the entire area in which the two oaks grow is being improved. We present the main characteristics of oak ring series and discuss the latest methodological advances in defining the calendar year in which the tree-rings were formed and in interpreting such dating in terms of the age of a wooden object. Dendrochronology has established itself as a standard dating tool and has been applied in a wide variety of (pre-)historical studies. Archaeological wood, historical buildings, works of art (such as panel paintings and sculptures) have been successfully investigated. Recent advances in dendro-provenancing have helped to obtain more information on the timber trade in the past. Information on past forest structures, silviculture and timber use have become available through scrutinizing historical and contemporary ring-width patterns.     

Mitochondrial DNA studies of the Pazyryk people (4th to 3rd centuries BC) from northwestern Mongolia

The discovery and excavations in 2006 by joint Russian–German–Mongolian expeditions of the Pazyryk culture burial sites (4th to 3rd centuries BC, Early Iron Age, the Scythian period) in the Altai mountains of northwestern Mongolia near the Russia border provided new material for studying various aspects of these ancient peoples lives, including human, animal and plant remains. Ice accumulation in the graves preserved the human remains, allowing biological analysis of the samples. We conducted a genetic study based on mitochondrial DNA from remains of three Pazyryk culture representatives to investigate the possible genetic relationships of this Siberian Scythian group with populations of adjacent territories. These data support possible genetic contacts between populations of Altai and other Eurasia regions in the Early Iron Age, and are in good agreement with corresponding archaeological and anthropological data. However, a large-scale study of the Pazyryk population gene pool structure must be performed to further confirm these findings.     

The Cold War and environmental history: complementary fields

The Cold War was not only for the hearts and minds of people, it was also for their mouths and bellies, that is, for food, energy and raw materials. This signified a global power struggle over the control of natural resources. In addition to the increasing consumption of natural resources and resulting pollution, the destructive capacity of the weapons of mass destruction compelled human beings to recognise that their activities could ultimately endanger the planet earth. The Cold War was a propagator and framework for the birth of global catastrophism and also for the emergence of a global environmental awareness. Nature, its exploitation and also gradually its protection, opened up yet another front in the Cold War. Yet the relationship between the Cold War and the environment was reciprocal. On the one hand, concerns over environmental contamination or destruction called into question the meaningfulness of the Cold War itself. On the other hand, the specific sociopolitical structures of the Cold War deeply affected the emergence of environmental ideas, ideals, organisations and activities in different continents.     

The anatomy of difference: comprehending the evolutionary dynamics of economic and spatial structure in the Austrian and Czech economies

The research on the economic convergence of Central and Eastern European countries towards the old EU members is voluminous, and it has an obvious appeal to both policy-makers and public. Unlike the traditional literature concerned with selected macro-patterns of the European convergence process, this paper presents a comparative study of two economies, attempting to comprehend more nuanced aspects and underlying mechanisms shaping their evolution. It examines the evolutionary dynamics of the structure and spatial organization of the Czech and Austrian economies since the late 1980s. Therefore, as a basis for subsequent analysis, the conceptual part attempts to systematize the key specific factors of the former command economies. The empirical results show that, despite significant similarities in the structure of these economies, the absolute and relative productivity as well as the spatial relatedness of the main types of industries reveal important differences between these two countries. These distinctions tend to be disregarded when making inferences about the European convergence process on the basis of traditional literature concerned predominantly with macro-patterns. Consequently, this study shows that since the collapse of socialism, Czechia has been reintegrated into the global economy in a different way from Austria, implying different evolutionary trajectories in the future.     

The impact of language borders on the spatial decay of agglomeration and competition spillovers

There is now strong evidence that “soft” institutions are interrelated with the working of the economy. For example, in a geographical setting there is evidence that language borders affect interpersonal relationships, but there is no equivalent evidence regarding the effects of language borders on agglomeration or competition spillovers. This paper examines whether language affects the geographical extension of agglomeration and competition spillovers by observing the geography of employment patterns in a linguistically discontinuous setting. Our findings, for the first time, provide empirical evidence that language borders shape the distance decay of competition spillovers, independent of governance, and institutional issues.     

Observation and assessment of local economic development with regard to the application of the local multiplier

This contribution deals with the observation and evaluation of the issues of local economic development with a focus on the relatively new method of the local multiplier LM3. The main objective of this article is to evaluate the application possibilities of selected tools for the analysis of local economic development, in order to verify the effectiveness of the methodology of the local multiplier LM3 and to discuss the possibilities of its practical use. This LM3 method is perceived to be one of the convenient methods on how to capture certain components of local economic development. This indicator of the power of local economies is verified within field research in two case studies conducted in the ?umava region in Southwest Bohemia. The added value of this contribution is both methodological and practical. Currently, there exist only very few studies using the LM3 method in the Czech Republic and they do not offer satisfying evaluation of possible broader use of this method in the area of local development in the specific Czech regions. Having summarized two new case studies, this article contributes to the methodological discussion of the LM method and includes concrete practical recommendations for future research and also practical use.     

Regional embeddedness,relatedness and inter-regional linkages among less developed regions in Central Europe

This paper aims at a comprehension of existing intra-/inter-regional production flows in a dynamically transforming, export-oriented economy in Central Europe. Drawing on evolutionary economic geography combined with input–output approaches, we have assessed the sectoral compositions and relationships between regions from a buyer-supplier interactions perspective. Inspired by contemporary literature we applied concepts of regional embeddedness, relatedness and vertically related variety. Conceptually we argue that the degree of embeddedness of regions is differentiated and spatially non-random. The differences will depend to a large extent on the economic characteristics and on the ability of key actors and institutions in these regions to respond actively to changing opportunities and threats. Empirically we have found: that economically more developed regions are relatively more embedded in terms of production flows and have greater sectoral variety, whereas regions with high export-dependence are economically backward, and have higher concentration of industry and negative associations with innovation activity and overall innovation potential. The intensity of interregional production flows increases as the regional economies vary more from each other, but beyond a certain level of structural difference the rate of mutual flows decreases; and that the intensity of interregional relations depends on the relatedness of the economic bases.     

Obtaining Black Carbon—A Simple Method for the Safe Removal of Mineral Components from Soils and Archaeological Layers

In this study, we present a novel, safe method for how to remove inorganic components from soil samples studied for archaeological purposes, in order to improve studies of the distribution of black carbon in the sedimentary record. As the depositional history of this material depends on the interaction between humans and the natural environment, this method can be widely used in archaeology, landscape archaeology, palaeoecology, environmental geology and sedimentology. Our method does not require the use of dangerous hydrofluoric acid, which is commonly used for the removal of silicon oxide from such samples; therefore, this procedure allows even less chemically trained scientists to analyse soil samples with an increased level of work safety.     

Arch Dam-Fluid Interaction Considering Reservoir Topology

The magnitudes of the hydrodynamic pressures at the dam-fluid interface depend on the amount of energy transmitted to the fluid by the vibration of the reservoir boundaries. Although the reservoir topology can have a considerable impact on the amount of generated energy, it has still not been adequately addressed. This article treats an arch dam-fluid interaction considering a compound wave field of compressive and dilatational waves in a reservoir with a complex topology. A truncation surface was located at a distance beyond which the simulated wave field has only negligible effects.