131 research outputs found
World Famous Scientist Lotfi A. Zadeh Azerbaijan "Era"
No full textOne of modern science's most important tasks is to research and examine the era, perspective and philosophical views of the genius scientist Lotfi A. Zadeh, who served science for 70 years and raised it "from earth to the universe" in the context of the historical philosophy. This article describes the "era" of Lotfi A. Zadeh, which started in Azerbaijan and ended with his eternity in Azerbaijan. This article is the part monograph of the Author of the article "Lotfi A. Zadeh. Of course, the main part of Lotfi A. Zadeh's "era" passed far away from Azerbaijan - to the United States. After a long break, in 1965, when he came to Russia for a conference, he made a short visit to Azerbaijan. The genius scientist's first and last live visit to Azerbaijan took place in 2008, which the Author of the article called this visit "21st century. The peak of Lotfi A. Zadeh Azerbaijan and Azerbaijanis "era". And the last - a genius scientist - returned to his native land once and for all when he died in 2017 at 96. This entire period is evaluated in the context of the philosophy of history in the article
Standard format for writing paper in industrial engineering web of science journal
No full textThis research suggests a standard format for writing a paper in industrial engineering web of science journal. It is the first time generating a solution format for this author's problem. As a result, we design a simple and suitable format for writing a paper in industrial engineering area. This format aims to help industrial engineering for preparing a paper for web of science journal
On Fuzziness: A Homage to Lotfi A Zadeh
No full textThe notion of Fuzziness stands as one of the really new concepts that have recently enriched the world of Science. Science grows not only through technical and formal advances on one side and useful applications on the other side, but also as consequence of the introduction and assimilation of new concepts in its corpus. These, in turn, produce new developments and applications. And this is what Fuzziness, one of the few new concepts arisen in the XX Century, has been doing so far. This book aims at paying homage to Professor Lotfi A. Zadeh, the “father of fuzzy logic” and also at giving credit to his exceptional work and personality. In a way, this is reflected in the variety of contributions collected in the book. In some of them the authors chose to speak of personal meetings with Lotfi; in others, they discussed how certain papers of Zadeh were able to open for them a new research horizon. Some contributions documented results obtained from the author/s after taking inspiration from a particular idea of Zadeh, thus implicitly acknowledging him. Finally, there are contributions of several “third generation fuzzysists or softies” who were firstly led into the world of Fuzziness by a disciple of Lotfi Zadeh, who, following his example, took care of opening for them a new road in science. Rudolf Seising is Adjoint Researcher at the European Centre for Soft Computing in Mieres, Asturias (Spain). Enric Trillas and Claudio Moraga are Emeritus Researchers at the European Centre for Soft Computing, Mieres, Asturias (Spain). Settimo Termini is Professor of Theoretical Computer Science at the University of Palermo, Italy and Affiliated Researcher at the European Centre for Soft Computing, Mieres, Asturias (Spain
A survey on the construction and demolition waste in Mongolia
No full textn many developing countries, the rapid growth of town and cities has generated a rising levels of waste and illegal dumps have become a serious issue. The booming construction industry in Mongolia has resulted in the production of massive amounts of CDW which is one of the largest waste streams. In Ulaanbaatar (UB) and other cities in Mongolia, the construction waste is dumped illegally. In order to promote the sustainability of the building industry, plenty of regulations focusing on reducing or recycling the CDW have been carried out worldwide. This paper investigates the current CDW management in Mongolia and proposes a quantification of the amount of CDW in UB by using a Material Flow Analysis (MFA). Questionnaire surveys and interviews were conducted with main stakeholders in construction and recycling sector. From the questionnaire results, it is clear that the awareness about the CDW issues in Mongolia is low among the principal stakeholders in the sector, such as Government agencies and construction companies. On the other hand, recycling in Mongolia belongs to an informal sector and the lack of investment constitutes a major problem. In this regards, the technical and non-technical solutions to improve CDW management system are proposed. A stricter control of landfilling for CDW and a creation of a dedicated regulatory framework specific to CDW are needed. To increase the recovery and recycling rates of materials an optimum demolition strategy (for example process, costs, logistics, procedures, timing) is recommended.Materials and Environmen
Numerical modelling of the dehydration of waste concrete fines: An attempt to close the recycling loop
No full textThe ever-increasing interest on sustainable raw materials has urged the quest for recycled materials that can be used as a partial or total replacement of fine fractions in the production of concrete. This paper demonstrates a modelling study of recycled concrete waste fines and the possibility of turning them into active constituents for the production of concrete. When construction demolition waste (CDW) fines with particle size 0 - 4mm are exposed to a hot environment, different reactions will occur, especially dehydration and phase changes. A one- dimensional (1D) transient model is developed to predict the conversion of the hydrated concrete fines into their dehydrated state, in which the key processes inside the particle and at the boundary layer outside the particle are properly addressed. The model predicts a final composition of the particle that resembles cement clinker, which means a high potential for reuse in manufacturing concrete. Finally, model results for the mass loss during conversion are experimentally validated using thermogravimetric study.Materials and Environmen
The influence of parent concrete and milling intensity on the properties of recycled aggregates
No full textThe C2CA concrete recycling process consists of a combination of smart demolition, gentle grinding of the crushed concrete in an autogenous mill, and a novel dry classification technology called ADR to remove the fines. The` main factors in the C2CA process which influence the properties of Recycled Aggregates or Recycled Aggregate Concrete (RAC) include the type of Parent Concrete (PC), the intensity of autogenous milling and ADR cut-size point. This study aims to investigate the influence of PC and intensity of the autogenous milling on the quality of the produced recycled aggregates. Three types of concrete which are frequently demanded in the Dutch market were cast as PC and their fresh and hardened properties were tested. After near one year curing of PC samples, they were recycled independently while the aforementioned recycling factors were varied. The effects of different recycling variables on the water absorption, density, crushing resistance and durability of produced recycled aggregates were investigated. According to the results, type of the parent concrete is the predominant factor influencing the properties of the recycled aggregates. Milling intensity was found to be effective on improving the properties of recycled aggregates coming from weaker parent concrete. The experimental results suggest that among various milling intensities, milling at medium shear and medium compression improves the overall quality of RAMaterials and Environmen
On-site wind powered hydrogen refuelling stations: From national level to a case study in Germany
No full textHydrogen refueling stations are an important part of the infrastructural development that should be developed in order to realize a 100% sustainable economy for the future. Most of the refueling stations are located within urban areas but there are many located outside urban areas or in remote areas. Hydrogen could either be transported to these sites or being locally produced with integrated sustainable energy systems. In this study the potential number for wind powered hydrogen refueling stations using GIS is determined. Furthermore the amount of hydrogen that could be produced and used is determined via energy system simulation. Finally the hydrogen production and dispensing costs are calculated.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Energy Technolog
Assessment of the contaminants level in recycled aggregates and alternative new technologies for contaminants recognition and removal
No full textOne of the main challenging problems associated with the use of Recycled Aggregates (RA) is the level of mixed contaminants. For utilizing RA in high-grade applications, it is essential to monitor and minimise the content of the pollutants. To this extent the C2CA concrete recycling process investigates a combination of smart demolition, followed by new innovative technologies to produce high-grade secondary aggregates with low amount of contaminants. This paper ?rstly reports the level of contaminants in different fractions of recycled aggregates coming from a real case study. Results show that the wood content of 4-16 mm recycled aggregates is well within the strictest limit of the EU standard. However, there are still large visible pieces of wood and plastic in the +16 mm RA fraction which, albeit within the standards, does not satisfy the users. In order to solve this problem the feasibility of applying two existing technologies (near infrared sensor sorting and wind sifting) to remove contaminants, is studied. Furthermore, two types of online quality control sensors (hyper spectral imaging and laser induced breakdown spectroscopy) are introduced and a summary of their recent developments towards the quality control of RA are presented.Structural EngineeringCivil Engineering and Geoscience
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Novel fuzzy logic controllers with self-tuning capability
No full textTwo controllers which extend the PD+I fuzzy logic controller to deal with the plant having time varying nonlinear dynamics are proposed. The adaptation ability of the first self tuning PD+I fuzzy logic controller (STPD+I_31) is achieved by adjusting the output scaling factor automatically thereby contributing to significant improvement in performance. Second controller (STPD+I_9) is the simplified version of STPD+I_31 which is designed under the imposed constraint that allows only minimum number of rules in the rule bases. The proposed controllers are compared with two classical nonlinear controllers: the pole placement self tuning PID controller and sliding mode controller. All the controllers are applied to the two-links revolute robot for the tracking control. The tracking performance of STPD+I_31 and STPD+I_9 are much better than the pole placement self tuning PID controller during high speed motions while the performance are comparable at low and medium speed. In addition, STPD+I_31 and STPD+I_9 outperform sliding mode controller using same method of comparison study
Elements and Measurement Models of Intellectual Capital
No full textRecognizing and measuring of intellectual capital (IC) is on the agenda of most 21st century organizations. The purpose of this paper is to describe intellectual capital and IC elements and also to present a review of some of the most commonly known intellectual capital models. This paper, is structured into two sections. The first section proposes definition of intellectual capital and IC elements. The second section focuses on importance of measuring intellectual capital and commonly known IC measurement models. For this, a wide review of literature was made. In almost every created intellectual capital measurement model, elements of IC are defined in three dimensions; i.e. human capital, customer capital and structural capital
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