Cost‐benefit appraisal of the industrial areas programme in Greece: Aims,methodologies and assumptions

The Industrial Areas Programme in Greece aims to promote and propagate industrial activity in targeted regions. The policy mainly provides for the acquisition of industrial land and the development of the public infrastructure and has been operational since 1968. The objectives of this research are to evaluate the cost‐effectiveness of this policy in terms of the stated aims. Cost‐benefit methods are used to compare the likely outcomes of the policy in the light of the resources deployed. The research illustrates the variety in performance levels that individual projects achieve but concludes overall that the programme has been more than worthwhile. This paper deals with the objectives of the study and how they are to be achieved.     

A contribution to the study of post-depositional alterations of pottery using TL dating analysis

In luminescence dating, the potassium concentration significantly contributes to the dose rate value in the age estimation. Within this study, fine-grain thermoluminescence dating has been applied on sherds of calcareous pottery of known age, excavated at a Roman site in Mallorca, Spain. For those of the samples that showed signs of severe potassium leaching, according to chemical and mineralogical examination, the thermoluminescence analysis provided overestimated dates. By using the known archaeological age of the samples, a corrected dose rate value can be estimated which provides the potassium concentration averaged for the burial period. Finally, a step-like model can then be used to estimate the fraction of the burial period after which most of the alteration effects took place.     

Rethinking European Integration in the Competition Domain

This symposium explores the causes and consequences of European competition policy. I make two points in this essay, which the authors of the symposium reinforce. First, European integration is best examined from a public policy perspective, which focuses on the course of action that European public authorities decide (or not) to take. Second, the workings of competition policy in Europe cannot be understood without examining policies both at the European Union level and at national levels. The main benefit of the approach is to encourage cross-fertilization across several fields. Concepts and tools from policy studies and comparative politics are used to inform phenomena that have been investigated until recently mainly by international relations scholars.     

Behavior Factor for Performance-Based Seismic Design of Plane Steel Moment Resisting Frames

Simplified expressions to estimate the behavior factor of plane steel moment resisting frames are proposed, based on statistical analysis of the results of thousands of nonlinear dynamic analyses. The influence on this factor of specific structural parameters, such as the number of stories, the number of bays, and the capacity design factor of a steel frame, is studied in detail. The proposed factor describes the seismic strength requirements in order to restrict maximum storey ductility to a predefined value. Interrelation studies between maximum storey ductility and the Park-Ang damage index are also provided for the damage-based interpretation of the performance levels under consideration. Realistic design examples serve to demonstrate the ability of the proposed factor to convert conventional force-based design to a direct performance-based seismic design procedure.     

Cost-benefit appraisal of the industrial areas programme in Greece: Findings and implications

This is the second paper reporting on research which has attempted an evaluation of the performance of the Industrial Areas Programme in Greece. The programme itself has the objective of promoting industrial development in selected regions of Greece mainly through the provision of land and industrial infrastructure. It began in 1968. This research is about the cost-effectiveness of this policy and the methodologies used are those based on cost-benefit analysis. These were discussed in the first paper. This paper reports on the results of several different types of analysis. Although the research findings illustrate a wide variety in the levels of performance across the industrial areas selected for study, it is difficult not to conclude that the initiative in general has provided the state with good value for money.     

Optimum Design Approaches for Improving the Seismic Performance of 3D RC Buildings

In this article, a number of design approaches for 3D reinforced concrete (RC) buildings are formulated in the framework of structural optimization problems and are assessed in terms of their performance under earthquake loading. In particular, three design approaches for RC buildings are considered in this study. In the first, the initial construction cost is considered as the objective function to be minimized. The second one is formulated as a minimization problem of the torsional response, while a combined formulation is also examined as the third design approach. The third approach is considered with two distinctive formulations. According to the first approach, the torsional behavior is minimized by minimizing the eccentricity between the mass and rigidity centers, while the second one is achieved by minimizing the eccentricity between the mass and strength centers. It is shown that the optimized designs obtained according to the minimum eccentricity of the rigidity center behave better in frequent (50/50 hazard level) and occasional (10/50 hazard level) earthquakes, while the designs obtained according to the minimum eccentricity of the strength center formulation was found better in rare (2/50 hazard level) events. Designs obtained through a combined formulation seem to behave equally well in the three hazard levels examined.     

Assessment of Perforated Steel Beam-to-Column Connections Subjected to Cyclic Loading

This article presents a study of fully fixed (welded) perforated beam-to-column connections, used as strengthening techniques to seismic-resistant design. The effect of using non-standard novel web opening configurations of variable depths and positions is investigated. The improvements on the structural behavior foreshadow the enhancements gained using these perforated members. It is concluded that using large isolated perforations is an effective way of improving the behavior of connections enhancing their ductility, rotational capacity and their energy dissipation capacity. Moreover, the connections with novel openings outperform the conventional ones; therefore, they can be suitably used in the aseismic design of steel frames.