Collagen deamidation in archaeological bone as an assessment for relative decay rates

Attempts to extend methods for dating archaeological bones beyond that of radiocarbon dating, such as amino acid racemization, have met with limited success owing to the dependence on multiple environmental factors and controls. Despite facing similar challenges, deamidation of glutamine has recently been investigated as a potential indicator of ‘thermal age' in archaeological bones, as well as a measure of their preservation quality. In this study, we undertook a series of simulated diagenetic experiments to understand the various factors affecting deamidation. Further, we analysed bones from different Middle Palaeolithic layers from Grotte Mandrin (France), with the results suggesting potential use of deamidation for relative dating, but only in case of extremely well‐preserved layers. The results also suggested the possible use of attenuated total reflectance‐Fourier transform infrared (ATR‐FTIR) spectroscopy as a screening test for soluble collagen before proteomic analysis.     

The Strategic Choice of Location and Transport Mode in a Successive Monopoly Model

This work emphasizes the incentives for vertical integration in a spatial model. A downstream monopoly will both strategically increase its transport costs and locate inefficiently relative to its customers. This forces the upstream monopolist to lower its input price rather than permit sales to decline. The excess costs and the inefficient location lower total profit in the vertical stream generating an incentive for vertical integration.     

Location Equilibrium for Cournot Oligopoly in Spatially Separated Markets

Consider a two-stage non-cooperative Cournot game with location choice involving n≥ 2 firms each with several facilities. There are m≥ 2 spatially separated markets constituting the vertices of a network. Each firm first selects the locations of their facilities and then selects the quantities to supply to the markets to maximize its profit. There exists a Nash equilibrium in the quantities offered by each firm at the markets. Furthermore, when the demand in each market is sufficiently large, each firm chooses to locate its facilities only at vertices. With linear demand in each market, there exists a Nash location equilibrium.     

The Palaeolithic of the Middle Son valley, north-central India: Changes in hominin lithic technology and behaviour during the Upper Pleistocene

The Middle Son valley in north-central India preserves extensive Quaternary alluvial deposits. A long history of archaeological and geological research in the valley has resulted in the discovery of lithic assemblages ranging from Lower Palaeolithic to microlithic, a rich corpus of fossilised faunal remains, and ash deposits from the 74,000 year-old Toba supereruption. This paper reviews the chronology and stratigraphy of the valley’s Quaternary sediments, and presents a model that hypothesizes the temporal sequence of important lithic assemblages from excavated and surface contexts. Artefacts in these assemblages are analysed and changes in lithic technology through time are described; this evidence is used to propose shifts in hominin behaviour and demographic structure in this region during the Upper Pleistocene. Recognising gaps in our understanding of the Middle Son record, future avenues of research are recommended that will build upon previous research and address questions of palaeoanthropological significance. The Middle Son valley preserves a long and rich record of hominin occupation from all periods of the Palaeolithic that is rarely paralleled by other sites in India.     

Product Differentiation and Location Choice in a Circular City*

Abstract. The paper analyzes spatial competition among firms that sell substitute and/or complementary products. The firms first choose locations on the perimeter of a circular city and then compete in quantities (à la Cournot). Both linear and convex (quadratic) transport costs are considered. In general, multiple location equilibria are encountered. Complete agglomeration, partial agglomeration, and complete dispersion are possible. Convex (quadratic) transport cost substantially shrinks the set of equilibria obtained under linear transport cost. In general, the results obtained for a larger number of firms selling complementary products are strikingly different from those obtained under a duopoly.     

Hindu cosmology and the orinetation and segregation of social groups in villages in Northwestern India

This paper presents a cultural analysis of the directional orientation and segregation of castes in villages in a part of the northwestern plains of India. It interprets the built environment in terms of Hindu cosmology. Recent literature in cultural geography interprets the landscape "as text" or through symbols. The symbolic approach has greater relevance for traditional societies where clear schemata are discernible in built environments. This paper attempts a critical appraisal of Hindu cosmology as a schema for interpreting built environments in Indian villages.
Challenging the widely held view that Indian villages lack order, the paper demonstrates that there is a religiously ordained order in the landscape. The order is manifested in the form of orientation of several features of landscape, especially the caste mohallãs (wards) to the cardinal directions. Orientation of caste mohallãs to the 'sacred' directions in a settlement follows a system evolved by Indian civilization to harmonize the fractured social order with the segmented cosmic order. The paper also demonstrates that segregation is an inherent characteristic of orientation.
As a background for regional diversities, empirical evidence reveals that in the study region Hindu cosmology is impressed on villages, though often in a modified form. Villagers believe that the social space known as khenúã slopes down from west to east, while the southern sector is the 'lowest' segment of the village. Dominant castes characteristically reserve for themselves the best western site of the village and low castes are placed in lower social spaces, with scheduled castes being generally placed in the south.     

Seismic Stability of Slope Considering Rayleigh Wave

In the present paper factor of safety of slope under seismic loading condition is evaluated assuming circular failure surface. Using Fellenius method the center of most critical circle is located. Adopting limit equilibrium method, under the influence of weight of potential sliding mass and seismic inertia forces, factor of safety is evaluated considering Rayleigh wave along with primary wave and shear wave. Results are presented and compared with the available results from literature. Detailed parametric studies are also carried out to observe the variation of safety factor at different soil strength and seismic forces.     

Russian nuclear energy diplomacy in Finland and Hungary

We compare Russian nuclear energy diplomacy toward Finland and Hungary, where the Russian state corporation Rosatom intends to build nuclear power plants by the 2020s. Russian nuclear energy diplomacy features Rosatom working with other state institutions, its own subsidiaries, and an extensive network of companies and R&D actors to support Russian nuclear power projects abroad. Using the structuration approach, we find three interests driving such diplomacy: energy business and associated profits; modernization of the Russian economy, including the diversification of its export structure; while foreign policy interests are also involved, considering the constraints emerging in EU–Russia energy diplomacy in the oil and gas sectors, including the sanctions since 2014. Some domestic actors in Finland and Hungary make the linkage between nuclear energy and foreign policy as explicit as do some Western commentators. Seeking to pursue these interests, Russian actors must accommodate their considerable assets to the structural constraints they encounter in the target countries. We identify four structural dimensions: the Russian actors are well endowed as regards the resources, technology, and infrastructure dimension; and the dimension of finance, business models, and markets. However, on the institutional dimension, they face a less controllable environment. Regarding the ecological dimension, they must conform to local safety requirements. In both cases, Russian actors were able to strengthen perceptions of joint interests with actors in the target country facilitating the nuclear power plant projects, thereby paving the way for the use of soft power.     

Democratic transition in African politics: The case of Kenya

The splintered, struggling Africa of today cannot afford the luxury of multiple parties, independent presses and honest debate. In countries where national goals are not clearly defined, such freedoms enable the various factions to fight for self‐interest at the expense of majority concerns. National institutions are not strong enough to withstand these pressures, and governments are not cohesive enough to endure forces motivated by anything less than nationalistic concerns. At this stage most African countries are best served by benign dictators. Democracy can come later, if it is to come at all. But for now democracy is no more a panacea for African ills than is communism. What Africa needs to develop is an African political system, imported from neither East nor West, that combines elements of capitalism and socialism, both of which are inherent in the African character. It should include two concepts that Africans today mistakenly view as contradictory—economic incentive and social justice (Lamb 1987, 57–8).     

Seismic Behavior of RC Bridge Piers under Bidirectional Excitations: Implications of Site Effects

Seismic demand of structures may be potentially magnified due to bidirectional shaking. This may also be strongly influenced by the amplification and/or attenuation of motions due to local site conditions. Current investigation examines the implications of these two aspects collectively. A code-designed reinforced concrete pier has been analyzed under recorded accelerograms and their derivatives from 1-D site analysis. Magnification in peak and cumulative responses due to bidirectional shaking may be sensitive to record-to-record variability. However, such magnification remains relatively stable across site characteristics. Combination rules are shown adequate to estimate peak deformation and deficient for cumulative demand irrespective of the site conditions.