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    Recruitment processes in academia: does the emperor have any clothes?

    , Article Science and Engineering Ethics ; Volume 22, Issue 5 , 2016 , Pages 1565-1568 ; 13533452 (ISSN) Ataie Ashtiani, B ; Sharif University of Technology
    Springer Netherlands  2016
    The final outcome of promotion and recruitment processes in universities should be conventional and plausible by the members of the relevant scientific community, to affirm that the processes have been competitive and fair. The objective of this opinion letter is to make a plea for the importance of the post-auditing and quantitative assessment of the selection criteria. It is shown that for an example case the outcome of the post-audit does not look reasonable from an external point of view, at least regarding the research competency. © 2015, Springer Science+Business Media Dordrecht  

    Microwave engineering in Iran's academia [around the globe]

    , Article IEEE Microwave Magazine ; Volume 19, Issue 3 , May , 2018 , Pages 124-128 ; 15273342 (ISSN) Abdipour, A ; Banai, A ; Farzaneh, F ; Kamarei, M ; Moradi, G ; Rashed Mohassel, J ; Shahabadi, M ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2018
    Presents information on global MTTS society education initiatives. © 2000-2012 IEEE  

    A new method for assessment of engineering drawing answer scripts using fuzzy logic

    , Article Journal of Computational Applied Mechanics ; Volume 51, Issue 1 , June , 2020 , Pages 170-183 Haghshenas Gorgani, H ; Jahantigh Pak, A ; Sharif University of Technology
    University of Tehran  2020
    Popular method for assessment of final exam answer scripts in university and among the engineering drawing answer scripts based on absolute true or false judgment and assigning a single number or letter to answer of each problem cannot be so fair. To obtain a fair assessment method, we considered “imagination”, “accuracy”, “drawing” and “innovation” that are objectives of engineering drawing course to be separately assessed for each problem. Flexibility and linguistic properties of fuzzy logic made us use it as the basis of our method. In addition, fuzzy variables and membership functions are easily linguistic explainable, and adjustable to different conditions. “Answering time” was added as... 

    Fabrication and evaluation of chitosan/gelatin/PVA hydrogel incorporating honey for wound healing applications: An in vitro, in vivo study

    , Article International Journal of Pharmaceutics ; 2020 Shamloo, A ; Aghababaie, Z ; Afjoul, H ; Jami, M ; Bidgoli, M. R ; Vossoughi, M ; Ramazani, A ; Kamyabhesari, K ; Sharif University of Technology
    Elsevier B.V  2020
    In this study, physically cross-linked hydrogels were developed by freezing-thawing method while different concentrations of honey were included into the hydrogels for accelerated wound healing. The hydrogel was composed of chitosan, polyvinyl alcohol (PVA), and gelatin with the ratio of 2:1:1 (v/v), respectively. Further, the effect of honey concentrations on antibacterial properties, and cell behavior was investigated. In vivo studies, including wound healing mechanism using rat model and histological analysis of section tissue samples were performed. The results illustrated that the incorporation of honey in hydrogels increased the ultimate strain of hydrogels approximately two times,... 

    Fabrication and characterization of biaxially electrospun collagen/alginate nanofibers, improved with Rhodotorula mucilaginosa sp. GUMS16 produced exopolysaccharides for wound healing applications

    , Article International Journal of Biological Macromolecules ; 2021 ; 01418130 (ISSN) Ashraf, S ; Parivar, K ; Hayati Roodbari, N ; Mashayekhan, S ; Amini, N ; Sharif University of Technology
    Elsevier B.V  2021
    Fabrication of scaffolds with enhanced mechanical properties and desirable cellular compatibility is critical for numerous tissue engineering applications. This study was aimed at fabrication and characterization of a nanofiber skin substitute composed of collagen (Col)/sodium alginate (SA)/ polyethylene oxide (PEO)/Rhodotorula mucilaginosa sp. GUMS16 produced exopolysaccharides (EPS) were prepared using the biaxial electrospinning technique. This study used collagen extracted from the bovine tendon as a natural scaffold, sodium alginate as an absorber of excess wound fluids, and GUMS16 produced exopolysaccharides as an antioxidant. Collagen was characterized using FTIR and EDS analyses. The... 

    Principles of submarine dynamics modeling

    , Article Conference on Underwater Intervention, UI 2005, New Orleans, LA, 14 February 2005 through 16 February 2005 ; 2005 , Pages 17-22 ; 9781605601298 (ISBN) Azarsina, F ; Seif, M. S ; Sharif University of Technology
    In this paper the principles of submarine dynamics modeling have been gathered as distinguished steps. Of course, in these few pages the details cannot be discussed and the formulae cannot be proved. The interested reader has to study more detailed references to attain a better perception of the subject. The paper, in addition to gathering and editing principles, has gone through offering simplifications in each part of modeling. Such simplifications will result in a good approximation of submarine dynamic behavior, which is exactly complicated in reality. In higher levels of modeling each part can be completed and details can be processed  

    Approximation of titration curves by artificial neural networks and its application to pH control

    , Article Scientia Iranica ; Volume 6, Issue 5 , 2000 , Pages 82-91 ; 10263098 (ISSN) Pishvaie, M. R ; Shahrokhi, M ; Sharif University of Technology
    Sharif University of Technology  2000
    Advanced model-based control of pH processes is noticeably a chemical modeling issue, because it can have a profound effect on the attainable control quality. This is especially the case when the pH regulation of streams, consisting of hundreds of constituents with varying concentrations, is encountered. The severe non-linear behavior of pH processes is reflected in the titration curve of the process stream. The performances of all model-based controllers are highly dependent on the accuracy of the model. Considering a great number of parameters such as dissociation constants, solubility products and characteristic concentrations places the designer in a dilemma of choosing between... 

    Analysis and data-based reconstruction of complex nonlinear dynamical systems : using the methods of stochastic processes

    , Book Rahimi Tabar, M. Reza
    Springer International Publishing  2019
    This book focuses on a central question in the field of complex systems: Given a fluctuating (in time or space), uni- or multi-variant sequentially measured set of experimental data (even noisy data), how should one analyse non-parametrically the data, assess underlying trends, uncover characteristics of the fluctuations (including diffusion and jump contributions), and construct a stochastic evolution equation?
    Here, the term "non-parametrically" exemplifies that all the functions and parameters of the constructed stochastic evolution equation can be determined directly from the measured data.
    The book provides an overview of methods that have been developed for the analysis of... 

    A Framework for Requirements Engineering in Situational Method Engineering

    , M.Sc. Thesis Sharif University of Technology Jafarinezhad, Omid (Author) ; Ramsin, Raman (Supervisor)
    Practitioners and researchers working on Software Development Methodologies (SDM) have always sought for ways to raise the degree of flexibility in SDMs, so that methodologies can be adjusted to specific project situations. Methodology Engineering (ME) approaches are being pursued to this aim, giving rise to Situational Method Engineering (SME). As the pivotal phase of software development, Requirements Engineering (RE) has proved essential in SME; however, SME has a long way to go as to its support for specialized RE practices. The RE practices employed in software engineering seem to provide a rich resource for strategies and techniques that can address this issue, if properly attuned to... 

    Effect of organoclay modified binders on fatigue performance

    , Article RILEM Bookseries ; Volume 4 , 2012 , Pages 869-878 ; 22110844 (ISSN) ; 9789400745650 (ISBN) Tabatabaee, N ; Shafiee, M. H ; Scarpas, A ; Kringos, N ; Al Qadi, I. L ; Loizos, A ; Sharif University of Technology
    Organoclay modification is receiving attention as a nano-modifier for asphalt binders. Nanoparticles are able to effectively mend the damaged sites of the nanocomposite without external intervention. Particle-polymer interaction results in packing particles into developed cracks, thereby mending the cracks during patch formation. This study investigates the rheological properties of organoclay modified binders with a focus on their fatigue properties. To this end, the dissipated energy concept, the ratio of dissipated energy change and plateau value (PV) energy were examined during fatigue tests using a dynamic shear rheometer. The effects of strain level, frequency and temperature on unaged... 

    The regulated market for kidneys in Iran

    , Article Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, 22 August 2011 through 23 August 2011 ; Volume 80 LNICST , August , 2012 , Pages 62-75 ; 18678211 (ISSN) ; 9783642309120 (ISBN) Fatemi, F ; Sharif University of Technology
    We study the kidney market in Iran. The most effective treatment for end-stage renal disease is a kidney transplant. While the supply of cadaveric kidneys is limited, the debate has been focused on the effects of the existence of a free market for human organs. Economists as well as medical and legal researchers are divided over the issue. Iran has a unique kidney market which has been in place for over 20 years, frequently reporting surprising success in reducing the waiting list for kidneys. This paper demonstrates how the Iranian system works  

    Enhancing tool support for situational engineering of agile methodologies in eclipse

    , Article Studies in Computational Intelligence ; Volume 430 , 2012 , Pages 141-152 ; 1860949X (ISSN) ; 9783642304590 (ISBN) Shakeri Hossein Abad, Z ; Alipour, A ; Ramsin, R ; Lee R ; Sharif University of Technology
    In recent years, with the growth of software engineering, agile software development methodologies have also grown substantially, replacing plan-driven approaches in many areas. Although prominent agile methodologies are in wide use today, there is no method which is suitable for all situations. It has therefore become essential to apply Situational Method Engineering (SME) approaches to produce agile methodologies that are tailored to fit specific software development situations. Since SME is a complex process, and there is a vast pool of techniques, practices, activities, and processes available for composing agile methodologies, tool support-in the form of Computer Aided Method... 

    Conditions on polynomials involved in admittance functions passively realizable by using rlc and two fractional elements

    , Article IEEE Transactions on Circuits and Systems II: Express Briefs ; Volume 67, Issue 6 , 2020 , Pages 999-1003 Tavazoei, M. S ; Sharif University of Technology
    Institute of Electrical and Electronics Engineers Inc  2020
    This brief deals with finding the necessary conditions which should be met by the polynomials appeared in the admittance functions passively realizable by using RLC components and two fractional elements. These conditions include structurally necessary equalities/specifications and positive-realness-based inequalities which should be satisfied by the involved polynomials. In the realizable cases, the acceptable region for choosing the pseudo inductances/capacitances of fractional elements is found from the obtained conditions. © 2004-2012 IEEE  

    Computer-aided method engineering: An analysis of existing environments

    , Article 20th International Conference on Advanced Information Systems Engineering, CAiSE 2008, Montpellier, 16 June 2008 through 20 June 2008 ; Volume 5074 LNCS , 2008 , Pages 525-540 ; 03029743 (ISSN) ; 3540695338 (ISBN) Niknafs, A ; Ramsin, R ; Sharif University of Technology
    Analogous to Computer-Aided Software Engineering (CASE), which aims to facilitate Software Engineering through specialized tools, Computer-Aided Method Engineering (CAME) strives to support a wide range of activities carried out by method engineers. Although there is consensus on the importance of tool support in method engineering, existing CAME environments are incomplete prototypes, each covering just a few steps of the method engineering process. This paper summarizes the history and the state of the practice in CAME technology, and provides criteria-based critique on existing CAME environments, thus highlighting their strengths and weaknesses. © 2008 Springer-Verlag Berlin Heidelberg  

    An introduction to the quantitative, rational and scientific process of software development (Part 2)

    , Article 6th International Conference on Software Methodologies, Tools and Techniques, SoMeT_07, Rome, 7 November 2007 through 9 November 2007 ; 2007 Koono, Z ; Chen, H ; Abolhassani, H ; Sharif University of Technology
    "Product" and "process" are two mutually orthogonal and important aspects of software. As Part 1 discusses "product", Part 2 discusses "process". "Process" is independent of "product" and is used commonly by various "producers". This paper first explains the structure of "process" and then introduces important technique by "divide and conquer". Various important management issues are discussed  

    An extended model of design process of lean production systems by means of process variables

    , Article Robotics and Computer-Integrated Manufacturing ; Volume 22, Issue 1 , 2006 , Pages 1-16 ; 07365845 (ISSN) Houshmand, M ; Jamshidnezhad, B ; Sharif University of Technology
    In this paper, we present an axiomatic modeling of lean production system design, using process variables (PVs). So far, we had developed a model for conceptual design of lean production systems by means of FR-DP relationships, the key characteristics of axiomatic design (AD) methodology, appeared in the proceedings of Second International Conference of Axiomatic Design. Albeit the model in question was thorough enough to be applied in various cases, its embedded abstract principles hamper straightforward applications and the required resources, tools, and techniques are not clarified. In AD terms, it lacks PVs created by mapping the design parameters (DPs) to the process domain to clarify... 

    Advances in heuristic signal processing and applications

    , Book ; Chatterjee, Amitava ; Nobahari, Hadi ; Siarry, Patrick
    Springer  2013
    There have been significant developments in the design and application of algorithms for both one-dimensional signal processing and multidimensional signal processing, namely image and video processing, with the recent focus changing from a step-by-step procedure of designing the algorithm first and following up with in-depth analysis and performance improvement to instead applying heuristic-based methods to solve signal-processing problems. In this book the contributing authors demonstrate both general-purpose algorithms and those aimed at solving specialized application problems, with a special emphasis on heuristic iterative optimization methods employing modern evolutionary and swarm... 

    Design and optimization of a cascade thermoacoustic Stirling engine

    , Article Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy ; Volume 227, Issue 7 , September , 2013 , Pages 814-824 ; 09576509 (ISSN) Karimi, M ; Ghorbanian, K ; Sharif University of Technology
    Professional Engineering Publishing  2013
    This article deals with the design and optimization of a cascade thermoacoustic Stirling engine. Different configurations for cascade thermoacoustic Stirling heat engine are investigated. A simplified model is proposed to enable initial design guidelines. The most important characteristics of the cascade system are examined. The results indicate that the thermoacoustic engines in cascade configuration may achieve very low onset temperatures. A suitable configuration is selected and the locations and dimensions of different thermoacoustic units are optimized to achieve low onset temperatures as well as high values for the acoustic power output and efficiency. The results support the... 

    Diesel engine maintenance system, using trend analysis of histroical data

    , Article Advanced Materials Research, 16 September 2011 through 18 September 2011, Singapore ; Volume 383-390 , September , 2012 , Pages 6755-6761 ; 10226680 (ISSN) ; 9783037852958 (ISBN) Sayyah, A ; Nikbakht, M ; Sayyah, M ; Baharudin, B. T .H. T ; Ismail, N ; Singapore Institute of Electronics ; Sharif University of Technology
    Contaminant materials in lubricants are signs for prediction and measurement of wear in engines. Therefore oil monitoring is considered as one of the most effective techniques for maintaining the heavy equipments. However based on oil analysis data, the identification of engine problem is very hard due to different contribution factors. Hence, this paper is purposed to analyze the wear behavior of some sets of selected heavy equipment engine based on documented oil analysis data during two years in different conditions to track engine failures using trend analysis. Furthermore the selected equipments are divided into two major groups (plantation and forestry, and general construction) based... 

    Performance investigation of a four stroke diesel engine, using water-based ferrofluid as an additive

    , Article ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011, 11 November 2011 through 17 November 2011 ; Volume 4, Issue PARTS A AND B , November , 2011 , Pages 1339-1343 ; 9780791854907 (ISBN) Daneshvar, F ; Jahani, N ; Shafii, M. B ; ASME ; Sharif University of Technology
    In this experimental study, a four stroke diesel engine was conducted to investigate the effect of adding water-based ferrofluid to diesel fuel on engine performance. To our knowledge, Magnetic nanoparticles had not been used before. To this end, emulsified diesel fuels of 0, 0.4, and 0.8 water-based ferrofluid/Diesel ratios by volume were used as fuel. The ferrofluid used in this study was a handmade water-based ferrofluid prepared by the authors. The results show that adding water-based ferrofluid to diesel fuel has a perceptible effect on engine performance, increasing the brake thermal efficiency relatively up to 12%, and decreasing the brake specific fuel consumption relatively up to...