206 research outputs found
Correction to: Predominance of Fourth Panzootic Newcastle Disease Virus Subgenotype VII.1.1 in Iran and Its Relation to the Genotypes Circulating in the Region
No full textThe original version of this article contained a mistake in the co-author names “Mohammad Sotani and Esameel Allahyari”. The correct co-author names should be Mohammad Soltani and Esmaeel Allahyari
ZnSnO3 - SnO2 nanocomposite as a catalyst for efficient hydrogen production through sodium borohydride methanolysis
No full textIn this work, we describe a straightforward modified sol gel approach for producing zinc stannate-tin oxide (ZnSnO3-SnO2) nanocomposite particles by combining tin chloride and zinc acetate using EDTA ammonium salt as an electrosteric inhibition agent. The acquired samples were characterized using simultaneous thermal gravimetric and differential scanning calorimetry (TGA/DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Vis spectroscopy and scanning electron microscopy (SEM). The catalyst activity of ZnSnO3-SnO2 particles in hydrogen production was determined by the methanolysis reaction from NaBH4. The hydrogen generation rate TOF (Turnover Frequency) The hydrogen generation rate, activation energy (Ea), enthalpy (ΔH) and entropy (ΔS) values of the hydrogen production reaction were calculated as 374.11 ml min−1.g−1 (832.38 h−1), 43.19 kJ mol−1, 40.65 kJ mol−1 and -178.96 J/mol.K, respectively. The prepared ZnSnO3-SnO2 composite can be recycled and used without obvious loss of activity; This makes the procedure economical and environmentally friendly.The author would like to acknowledge the financial support provided by the Algerian Ministry of Higher Education and Scientific Research and the University of Biskra. We are also grateful to Soltani Mohamed Toufik, Head of the Laboratory of “Photonic Physics and Multifunctional Nanomaterials” for providing TG analysis. Lastly, we extend our appreciation to our colleagues for their valuable feedback during manuscript preparation, their constructive comments helped improve the quality of this article.Peer reviewe
Forze telemetry
No full textIn this report we will introduce and explain what our project is about. Also we will describe and discuss the choices we made in this project. At the problem analysis part in Chapter 2, the requirements for this project are discussed. We will look at different alternatives and ways to implement these requirements in Chapter 3 and explain why we chose certain solutions. For each part of this project we thought about which programming language would be best to use and which frameworks we would need, this is discussed in Chapter 4. The information gathered during the research phase which is documented in this report will be used throughout the implementation of this project. Furthermore, this document contains information about the methodology in Chapter 5, implementation in Chaper 6 and the end product in Chapter 7. To explain what the client expect from us, we will define the problem in the following paragraphs.Electrical Engineering, Mathematics and Computer ScienceSoftware Technolog
Characterization of heterogeneous InP-on-Si optical modulators operating between 77 K and room temperature
No full textHeterogeneous integration of InP modulators on a silicon photonic platform, fabricated by bonding III-V wafer on patterned silicon waveguides, are proved to work between 77 K and 295 K. The performance of modulators based on the Franz-Keldysh effect (bulk) and the quantum confined Stark effect (quantum-well) is investigated for wavelengths ranging within 1460 nm-1580 nm. The bulk modulator is preferred when operating over a wide range of temperatures. The demonstration of such integrated optical components at low temperatures is especially attractive for applications that demand massive data communication between cryogenic and room temperatures requiring photonic interconnect, as well as applications with extreme environmental conditions, such as outer space exploration. (C) 2019 Author(s)
Culture driven co-creation: Guidelines for Super Moderators in U_CODE project
No full textThe U_CODE (Urban Collective Design Environment) project started to create an environment for urban co-creation with citizen. To achieve this, U_CODE has designed and developed a new kind of participatory platform for different European countries. To have an effective co-creation session, U_CODE facilitators need to have a good knowledge and understanding of different culture and values that can affect the co-creation sessions. The purpose of this project is to design guidelines for Super Moderators (SuMo) in U_CODE project to facilitate the co-creation sessions in the Netherlands, Germany, and France. First, I reviewed the literature to find the cultural differences in three countries based on available cultural dimensions models. Then, I made a blueprint for co-creation sessions using U_CODE documents and interview I had with U_CODE specialist. Adding the cultural differences to the blueprint, I made guidelines for each of three countries, which was validated by professional facilitators. Then, I ideated some concepts to find the most effective interaction between the guidelines and facilitators. I tested the concepts with interaction designers who had an experience in facilitating co-creation sessions. Based on the feedbacks and the company’s priority, I designed an app for the guidelines. Finally, I evaluated the final design with a culture professional, an international facilitator and a corporate facilitator. This report is concluded with a discussion and a list of limitations and recommendations for this project.Design for Interactio
The interaction between formal and informal assessment of public values in strategically complex decision-making processes on renewable energy projects: a case study on the 'community' wind farm Lage Weide
No full textEngineering and Policy Analysi
Chemical activation of porous carbon extracted from biomass combustion bottom ash for CO2 adsorption
Get PDFData Availability Statement: Data have been made available in Brunel University London’s repository via Brunel Figshare database.Supplementary materials are available online at: https://www.sciencedirect.com/science/article/pii/S2772656823000556?via%3Dihub#sec0021 .Copyright © 2023 The Author(s). Adsorption of CO2 by solid sorbents has been proposed as a pathway to decrease the emissions associated with combustion of fuels. However, if employing the waste residues of the combustion process (e.g. biomass combustion bottom ash), a pathway towards a green circular zero-waste and zero-emissions economy may be achieved. As such, a carbonaceous adsorbent has been produced (via chemical activation) using biomass combustion bottom ash as a precursor. This process entailed an intelligently designed experimental campaign based on a randomised Taguchi L9 orthogonal array, which revealed moderate activation temperatures (∼625 °C) and times (30 min) coupled with high ramp rates (10 – 15 °C/min) to be preferable. Following this method, a highly microporous (∼93 %) material was produced possessing a surface area of 643.6 m2/g. This, in turn, facilitated a substantial increase in CO2 uptake, namely, 1.29 mmol/g at 50 °C (quadruple that of the parent carbon and double that of the physically activated counterpart). Additionally, the working capacity as well as the heat of adsorption were measured. The latter properties are often overlooked with main focus drawn towards purely the adsorption capacity; however, they are imperative for industrial deployment of CO2 adsorbents.This work has been funded by the UK Carbon Capture and Storage Research Centre (EP/W002841/1) through the flexible funded research programme “Investigation of Environmental and Operational Challenges of Adsorbents Synthesised from Industrial Grade Biomass Combustion Residues”. The UKCCSRC is supported by the Engineering and Physical Sciences Research Council (EPSRC), UK, as part of the UKRI Energy Programme. Dr David Danaci would like to acknowledge funding provided by UK Research and Innovation (UKRI) under grants EP/P026214/1 and EP/T033940/1. Dr Salman Masoudi Soltani would also acknowledge EPSRC for the financial support of this work (grant EP/T033940/1)
Modeling the Exception Flow in PHP Systems
No full textThe goal of this thesis is to learn how exception handling constructs are used by PHP developers. We present an approach for detecting the exception flow of a software system, based on the work of Robillard and Murphy (2003). We show the accuracy of this approach by evaluating the tool on a corpus of three different PHP systems. The approach is thereafter used to perform an empirical study on a corpus of 20 PHP systems. For each of these systems, we compute the exception flow and measure the number of exceptions that are encountered, how often exceptions are propagated before they are caught, by what type they are typically caught, and whether they are documented. The results show that many exceptions are propagated often before they are caught and that many are caught by subsumption. Another finding is that exceptions are often not documented, which in many cases is a violation of the Liskov Substitution Principle
Single-objective versus Multi-Objectivized Optimization for Evolutionary Crash Reproduction
No full textEvoCrash is a recent search-based approach to generate a test case that reproduces reported crashes. The search is guided by a fitness function that uses a weighted sum scalarization to combine three different heuristics: (i) code coverage, (ii) crash coverage and (iii) stack trace similarity. In this study, we propose and investigate two alternatives to the weighted sum scalarization: (i) the simple sum scalarization and (ii) the multi-objectivization, which decomposes the fitness function into several optimization objectives as an attempt to increase test case diversity. We implemented the three alternative optimizations as an extension of EvoSuite, a popular search-based unit test generator, and applied them on 33 real-world crashes. Our results indicate that for complex crashes the weighted sum reduces the test case generation time, compared to the simple sum, while for simpler crashes the effect is the opposite. Similarly, for complex crashes, multi-objectivization reduces test generation time compared to optimizing with the weighted sum; we also observe one crash that can be replicated only by multi-objectivization. Through our manual analysis, we found out that when optimizing the original weighted function gets trapped in local optima, optimization for decomposed objectives improves the search for crash reproduction. Generally, while multi-objectivization is under-explored, our results are promising and encourage further investigations of the approach.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.Software EngineeringSoftware Technolog
Collaborative identity in project alliances: improving collaboration through collaborative identity formation
No full textAs a result of the high failure costs and many project delays in the construction industry, collaborative contracts emerged in an attempt to improve project performance. The project alliance was one of them. This integrative way of working requires a focus on the human aspects, because people from different organisational cultures are brought together, but this is not the case in practice. One of these human aspects is the formation of a collaborative identity.A collaborative identity refers to the collaborative values and working practices that form the organisational self-image and differentiates the organisations from others. It provides a feeling of belonging for each individual within the project alliance. The collaborative values and working practices that are required to build a collaborative identity are unknown, and therefore this research answers the question "How can collaboration within a project alliance be improved through a focus on the formation of collaborative identity?". The research is performed by means of a literature study as well as a Delphi study with two participating project alliances. The main outcome of the research was that forming a collaborative identity requires a different combination of working practices and collaborative values, that were defined during this research, for different project alliances.Civil Engineering | Construction Management and Engineerin
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