Urban Traffic Flows and Fourier Transforms

The purpose of this paper is first, to present some evidence indicative of a rough daily periodicity in traffic counts at a cross-section of an urban road accompanied by a considerable amount of seemingly random additional variation; and second, to attempt an accounting through Fast Fourier Transform and power spectrum density functions of this additional variation beyond the rough daily cycle. Reasons behind the macroscopic variable's dynamic behavior are provided. Relatively extensive traffic counts make them especially suited for investigating various dynamic behaviors, including possibly nonperiodic (chaotic) patterns.     

Second home conversion during the economic crisis: the case of Artemida,Greece

The conversion of second to primary homes is a known phenomenon; yet, its emergence as a result of necessity in an era of economic crisis has not been adequately addressed in the literature. To fill this gap, the article discusses an interview study of younger adults who have made this conversion, conducted in a second home area near Athens, Greece. The study explores the factors that influenced respondents to move permanently to their second home and perceptions of their relocation. Given the ongoing economic crisis in Greece, the research is placed in a unique socioeconomic context, allowing the investigation to delve into the effects of the economic crisis on these housing choices, by comparing perspectives on conversions having taken place before and during the crisis. Findings depict second home mobility as a complex phenomenon linked to tourism, changing housing needs, social factors, economic pressures, but also new potential urban functions arising from the current economic depression in Greece.     

Power Shifts in the European Union? The Case of Spatial Planning

This paper seeks to describe power shifts in the European Union's multi-level system of governance in the area of spatial planning. It begins by investigating, through the economic theory of federalism, the increasing 'Europeanization' of member states' policies that produces asymmetrical power shifts towards the European Union. It draws from German, Spanish and British case studies which confirm such shifts to the European Union level as well as to sub-national levels of government, although there is a tendency for competences to be shared between the European Union, national governments of the member states and sub-national authorities.     

The Ambivalence of Anti-Austerity Indignation in Greece: Resistance,Hegemony and Complicity

This article engages with a contradiction that can help us appreciate the ambiguity and complexity of indirect resistance as this is articulated in informal everyday contexts: many citizens in Greece boldly challenge the antisocial austerity measures that have plagued their lives, highlighting how these represent a hegemonic imposition led by foreign centres of economic power. Their anti-hegemonic critique, however, often recycles a dislike for foreigners and xenophobia, echoing more pervasive hegemonic narratives (for example, a crypto-colonial identification of Greece with the West). To deal with this contradiction, I stress the need to (1) de-pathologize local indignant discourse (avoiding the orientalization of anti-austerity discourse as emotional or inconsequential) and (2) acknowledge that indirect resistance may represent an astute critique of visible inequalities, but is not isolated from overarching hegemonic ideological influences that shape local interpretations of historical/economic causality.     

Impact of Modification on Ground Motion Characteristics and Geotechnical Seismic Analyses for a California Site

The impact of different modification techniques on ground motion characteristics and results of seismic geotechnical analyses is investigated for a site in California. Twenty-eight motions were selected and scaled and also modified using both time domain (TD) and frequency domain (FD) techniques. PGV and PGD of the TD-modified motions are found to be larger than their FD-modified counterparts, but slightly less than the scaled ground motion characteristics. Cyclic stress ratios and amplification factors are similar for all sets of motions. Newmark-type slope displacements caused by the scaled and modified ground motions are similar (within 25%) for a variety of sliding masses.     

Optimum temporal and spectral window for monitoring crop marks over archaeological remains in the Mediterranean region

This paper aims to explore the formation of crops marks over archaeological features using remote sensing data. Crop marks are very important to archaeological research since they can reveal in an indirect way buried archaeological remains. Several researches have been able to locate subsurface relics via interpretation of multispectral and hyperspectral satellite images. However the best phenophase (time-window) where these crop marks are enhanced and which spectral bands are the most capable for this enhancement are still an open question for the scientific community. This study aims to address these fundamental aspects of Remote Sensing Archaeology. For this reason an extensive dataset was used: two control archaeological sites were constructed in two different areas of Cyprus (Alampra and Acheleia). In these areas both barley and wheat, were cultivated. In situ spectroradiometric measurements were taken over a whole phenological cycle (2001–2012) for both areas. More than 30 in situ campaigns were performed and more than 2600 ground measurements were collected. The phenological analysis of these measurements have shown that a period of only 15 days is best suitable for monitoring crop marks which is connected with one phenological stage; during the beginning of the boot stage of the crops. This period can be used in areas having similar climatic condition as Cyprus (Mediterranean region). Also as it was found, this phenological stage of crops might be also influenced by the climatic conditions of the area. The evaluation of a proposed Archaeological Index was performed at the Thessalian plain (central Greece), where several Neolithic settlements are established. The evaluation was made using both Hyperion and Landsat images. The results have shown that the proposed Archaeological Index is suitable for the enhancement of crop marks in satellite imagery.