Structural Engineering and Mechanics | Year: 2017
The recently introduced index Ratio Of Torsion (ROT) quantifies the base shear amplification due to torsional effects on shear cantilever types of building structures. In this work, a theoretical proof based on the theory of elasticity is provided, depicting that the ratio of torsion (ROT) is independent of the forces acting on the structure, although its definition stems from the shear forces. This is a particular attribute of other design and evaluation criteria against torsion such as center of rigidity and center of strength. In the case of ROT, this evidence could be considered as inconsistent, as ROT is a function solely of the forces acting on structural members, nevertheless it is proven to be independent of them. As ROT is the amplification of the shear forces due to in-plan irregularities, this work depicts that this increase of internal shear forces rely only on the structural topology. Moreover, a numerical verification of this theoretical finding was accomplished, using linear statistics interpretation and nonlinear neural networks simulation for an adequate database of structures. Copyright © 2017 Techno-Press, Ltd.
Bellos J.,Neapolis |
International Journal of Geomechanics | Year: 2017
The main objective of this paper is to establish a complete analytical solution concerning the linear pressure distribution under rigid rectangular spread footings. An eccentricity diagram is developed to map the unique footing deformations and compression zones in each one of five distinct regions. For each region, the linear soil pressure, neutral axis position, and pressure values at the four corners are expressed in closed forms. The accuracy and consistency of the explicit expressions are verified by presenting several special boundary cases, whereas the physical interpretation is brought out by analyzing the eccentricity diagram. A generic nomogram providing the maximum soil pressure is also formed to promote efficient structural footing design. The developed analytical formulas for responses and resultants enable algorithmic implications without iterations and offer high computational efficiency. Proper examples, generated via developed computer software, exhibit how the theoretical content of this article is applied in practice. The software enables three-dimensional (3D) viewing of the deformed and undeformed physical and mathematical model of the structure, allowing detailed visual inspection of the results. © 2017 American Society of Civil Engineers.
Agency: European Commission | Branch: FP7 | Program: CSA-CA | Phase: REGIONS-2012-2013-1 | Award Amount: 2.60M | Year: 2013
WASTECOSMART - Optimisation of Integrated Solid Waste Management Strategies for the Maximisation of Resource Efficiency addresses the priority areas of a Resource Efficient Europe and relates to the EcoAP, by boosting innovation based on research and technology development within the field of integrated waste management. Through cross border cooperation and collaborative research activities between six regional research driven clusters, the project will strengthen regional capacities for investment, research and technological development. The core goal is to help introduce innovation to the market in this sector and as a consequence support economic growth and regional development. The partners of WASTECOSMART will join forces to elaborate one Joint Action Plan (JAP) for the coordination and strengthening of their complementary RTD capacities. In close consultation with regional stakeholders from the scientific world, businesses and public authorities (triple helix), the regions will elaborate a coordinated set of Regional Research Agendas and a cross-regional Joint Action Plan, which sets a common roadmap for future collaborative RTD activities and develops synergetic follow-up projects in these key domains. The formation of regional waste management clusters is further strengthened through the mentoring of less developed regions, the dissemination of the outcomes on various platforms and internationalisation measures reaching out to other high potential regions in the world. WASTECOSMARTs approach to waste management will be based on a novel and innovative process applying a holistic set of practices. So far, there are very few studies that employ the methodological concept of innovation systems analysis, and only a few studies dealing with anything other than isolated technological issues and approaches have been carried out.
Agency: European Commission | Branch: FP7 | Program: CP | Phase: ENV.2011.3.1.9-1 | Award Amount: 2.14M | Year: 2012
About 5% of global carbon emissions originate from the manufacturing of cement.According to IEA,cement production generates an average world carbon emission of 0.81 kg CO2 per kg cement produced.Cement related emissions are expected to increase by 260% throughout the 19902050period.As consequence,the global production of cement in 2030 is projected to grow to a level roughly 5 times higher than its level in 1990,with close to 5 billion tones worldwide.Emissions of the global cement sector alone are very likely to surpass the total amount of CO2 emissions of the EU before 2030.As well, Industrial waste is now global concern,causing environmental and economic harm.Industries are rapidly trying to find a solution,searching for optimal ways to manage waste and to change the most common practices as landfill or incineration.Industrial waste is very heavy burden for the environment,where a significant proportion of this industrial waste is attributable to construction and demolition waste.To mitigate these threats ECO-CEMENT will allow recovering valuable resources from industry,capturing CO2 and transforming both products into ecological cement that can be used in construction or novel environmental applications.Based on the natures way of creating natural formations through bacterial contribution to carbonate precipitation,the main objective of ECO-CEMENT is to develop a novel bio-mimetic technology for enzyme-based microbial carbonate precipitation through the revalorization of industrial waste as raw materials,in order to produce eco-efficient environmental cement.The Bio-mimetic Technology will convert industrial waste,mainly cement waste and others by-products,into high strength,ecological cement using microbial carbonate precipitation via urea hydrolysis.Internal studies suggest that the combined use of industrial waste and the implementation of Eco-Cement technology can reduce GHGE from cement manufacturing by up to 11 % and 20 % reduction of construction waste.
Journal of Cognition and Development | Year: 2013
Arguing on the computer was used as a method to promote development of face-to-face argumentation skills in middle schoolers. In the study presented, sixth graders engaged in electronic dialogues with peers on a controversial topic and in some reflective activities based on transcriptions of the dialogues. Although participants initially exhibited limited ability in arguing both face-to-face and on the computer, by the end of the intervention, they exhibited significant advances in both discussion modes. The gains of practice in the electronic mode-increased levels of counterarguments and rebuttals-successfully transferred to the face-to-face mode. This suggests a generality in developing argument skills. © 2013 Copyright Taylor and Francis Group, LLC.
Ecological Indicators | Year: 2013
It is generally recognised that indicator-based research forms a substantial part both of the everyday practice and of the current theoretical pursuits in an extensive set of different scientific fields that relate to the socio-economic and the environmental sphere. However, the lack of an endogenous indicator's theory hinders the enhancement of indicator's research into an autonomous scientific field and subdues the indicators study to the broader ecological, social, or economic context. Thus, scientists are often bounded to the study of indicators within their specialisation area, as evidenced by the very limited number of interdisciplinary studies on the use of indicators that have been published. Based on this deficiency of the current literature, the paper elaborates on the use of indicators in the socio-economic and the environmental area, focusing on fields in which indicators are essential to their practice. Namely, the paper reviews quality-of-life, macroeconomic, environmental, welfare and sustainability indicators in order to detect similarities and differences, pertain to their practice and to the theoretical frameworks in which indicators are utilised. The study concludes that quality-of-life, welfare and sustainability indicators are supported by weak theoretical foundations, as a result to the choice of the respective fields to exploit the possible benefits of an empirical interdisciplinary perspective, a fact that leads the use of indicators to methodological inconsistencies. In contrast, macroeconomic and environmental indicators are supported by a coherent theoretical body, which is reflected in their well-organised structure and leads to their sound practice. Last but not least, the study suggests that the way the aforementioned two fields utilise indicators can provide useful guidance to the formation of future objectives in the quality-of-life, welfare and sustainability indicators' research. Specifically, their corresponding fields should moderate their interest on composite indicators and, instead, their future research should be focused, so much on the identification of their field's key indicators that play a crucial role to the interpretation of the complex phenomena studied, as on the identification of the relationships that link these key indicators together. © 2013 Elsevier Ltd. All rights reserved.
Land Use Policy | Year: 2015
The aim of the article is to review the official Greek target indicators, i.e. those standards that are included in the current planning legislation (Official Government Gazette 285/D/5.3, 2004), and are used for the planning of private uses, such as manufacturing, wholesale trade, retail trade, offices, and housing. The article elaborates on the general typology of urban indicators and, more specifically, it addresses the methodology for the calculation of target indicators. Part of this methodology is utilized for the evaluation of the official target indicators that are currently in force. This evaluation is mainly based on the comparison of target indicators with the respective state indicators of years 2004, 2008, and 2012, and is carried out for each category of private urban uses separately. The article concludes on the inappropriateness of the values legislated as target indicators, and stresses the need for their immediate revision. © 2014 Elsevier Ltd.
Tsagkaridis K.,Moss Rehabilitation Research Institute |
Tsagkaridis K.,Neapolis |
Watson C.E.,Moss Rehabilitation Research Institute |
Jax S.A.,Moss Rehabilitation Research Institute |
Buxbaum L.J.,Moss Rehabilitation Research Institute
Frontiers in Human Neuroscience | Year: 2014
A number of studies have explored the role of associative/event-based (thematic) and categorical (taxonomic) relations in the organization of object representations. Recent evidence suggests that thematic information may be particularly important in determining relationships between manipulable artifacts. However, although sensorimotor information is on many accounts an important component of manipulable artifact representations, little is known about the role that action may play during the processing of semantic relationships (particularly thematic relationships) between multiple objects. In this study, we assessed healthy and left hemisphere stroke participants to explore three questions relevant to object relationship processing. First, we assessed whether participants tended to favor thematic relations including action (Th+A, e.g., wine bottle-corkscrew), thematic relationships without action (Th-A, e.g., wine bottle-cheese), or taxonomic relationships (Tax, e.g., wine bottle-water bottle) when choosing between them in an association judgment task with manipulable artifacts. Second, we assessed whether the underlying constructs of event relatedness, action relatedness, and categorical relatedness determined the choices that participants made. Third, we assessed the hypothesis that degraded action knowledge and/or damage to temporo-parietal cortex, a region of the brain associated with the representation of action knowledge, would reduce the influence of action on the choice task. Experiment 1 showed that explicit ratings of event, action, and categorical relatedness were differentially predictive of healthy participants' choices, with action relatedness determining choices between Th+A and Th-A associations above and beyond event and categorical ratings. Experiment 2 focused more specifically on these Th+A vs. Th-A choices and demonstrated that participants with left temporo-parietal lesions, a brain region known to be involved in sensorimotor processing, were less likely than controls and tended to be less likely than patients with lesions sparing that region to use action relatedness in determining their choices. These data indicate that action knowledge plays a critical role in processing of thematic relations for manipulable artifacts. © 2014 Tsagkaridis, Watson, Jax and Buxbaum.
Argyrides M.,Neapolis |
Kkeli N.,Neapolis |
Body Image | Year: 2014
The current study aimed to confirm the factor structure and reliability of the newly translated Greek version of the Sociocultural Attitudes Towards Appearance Questionnaire-3 (SATAQ-3) among 1753 Greek-Cypriot high school students. Results of the structural equation modeling indicated a very good fit with the original four-factor structure of the SATAQ-3 for both males and females. The Cronbach's alpha coefficients for the four subscales were .92 for 'Internalization-General', .82 for 'Internalization-Athlete', .94 for 'Pressure' and .88 for 'Information'. Further analyses showed no significant differences between BMI categories with respect to the Internalization-General, Internalization-Athlete and Information factors but there were significant differences on the Pressure factor. The findings of the current study support the existence of the original four-factor structure of the SATAQ-3. The validity and reliability results of the Greek version of the SATAQ-3 support its use in Greek-speaking countries or populations. © 2014 Elsevier Ltd.