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A technical note on "A fuzzy set approach for R&D portfolio selection using a real options valuation model" by Wang and Hwang (2007)
, Article Omega ; Volume 39, Issue 4 , 2011 , Pages 464-465 ; 03050483 (ISSN) ; Collan, M ; Modarres, M ; Sharif University of Technology
2011
Abstract
In this paper, three critical issues with the paper "A fuzzy set approach for R&D portfolio selection using a real options valuation model", coauthored by Wang and Hwang and published in Omega 2007 are addressed. Shortcomings of the original work are highlighted and corrective measures to improve the approach are proposed
Conceptual Developments in the Evolution of Innovation Systems Approach
,
Ph.D. Dissertation
Sharif University of Technology
;
Kermanshah, Ali
(Supervisor)
Abstract
The systemic approach to innovation plays a central and somewhat unifying role within the field of innovation studies. The main tenets of the approach were developed during the last decades of twentieth century by a bunch of researchers who were tackling with the problem of the economic nature of innovation and its role in growth and competitiveness. The innovation systems approach spread out rapidly throughout the globe and established itself as a framework for studying and policy making in academia and national and supranational organizations. This vast and fast expansion, however, was accompanied by a set of critical contemplations on the theoretical soundness of the approach and also by...
On the Possibility and Realization of a Science-Technology System Based on Religion
, Ph.D. Dissertation Sharif University of Technology ; Golshani, Mehdi (Supervisor)
Abstract
The worldview and value system can use a cognitive-normative framework to select and shape science and technology. Of course, this framework is not the sole factor in shaping and selecting science and technology. The context in which science and technology flourish is also an important factor. Thus a religious science and technology is possible. Furthermore one can find many examples in the contemporary science and technology which are rooted in a secular and naturalistic outlook., but one can shape a science and technology which are rooted in religious worldview and value system. These examples show that one can generate a religious type of science and technology ,but in order to do this...
Analysis of Conflicting Assumptions in the Policy Process of Legislation Process of Knowledge-Based Act Using aFraming Framework
, M.Sc. Thesis Sharif University of Technology ; Souzanchi Kashani, Ebrahim (Supervisor)
Abstract
The purpose of this study is to find the conflicting assumptions of the main actors in the legislation process of Knowledge-based Act. Collecting and classifying all documents related to this policy process, and based on interviews with main actors involved in this process (with different objectives) and using thematic analysis, we first attempt to classify the main actors involved in the process. Second, we analyze the conflicting paradigms which have led to political conflicts in the process. This analysis helps to improve the policy process of similar acts in future
Objective Information in the Empiricist View of von Weizsacker
, Article Foundations of Science ; Vol. 19, issue. 3 , 2014 , p. 241-255 ; Shafiee, A ; Sharif University of Technology
Abstract
We analyze von Weizsacker's view regarding the concept of information in physics. In his view, information arises from the reduction of properties of a physical object to their logical descriptive propositions. The smallest element of a lattice of propositions is an atom of information which is considered as the essence of every physical identity including position space. von Weizsäcker calls this element, "ur". Moreover, Biological evolution is described in terms of enhancement of the variety of forms. Form could be also reduced to descriptive logical propositions, thus to atoms of information. Therefore, information is the fundamental basis in von Weizsäcker's plan for unifying all...
Thirty-nine years of Iran's scientific products in the field of Geophysics
, Article Journal of the Earth and Space Physics ; Volume 41, Issue 1 , 2015 , Pages 145-164 ; 03781046 (ISSN) ; Ghaderi Sohi, A ; Sharif University of Technology
Institute of Geophysics
2015
Abstract
Identifying and measuring the impact and value of scientific output plays an important role in today's world of information overload. On one side, governments are trying to distribute research funds in ways that support research in strategically important fields, on the other side, researchers and scientists are seeking to access only relevant and quality information that have mainly worthy of their attention. Nowadays, countries are evaluated not only by their national products, military power, geographical area, etc., but also by such factors as the production and consumption of scientific information. Scientometric approaches are used to provide appropriate tools for evaluating scientific...
Reflection on the relationship between societies and technologies: the 'global networked heterogeneous co-construction'
, Article IEEE Technology and Society Magazine ; Volume 41, Issue 1 , 2022 , Pages 43-53 ; 02780097 (ISSN) ; Taqavi, M ; Shafikhani, A ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
The short history of the philosophy of technology has witnessed different and sometimes contradictory views about the relationship between society and modern technology, from the approaches that believe in technological determinism to those which believe in the deep influence of society on technology [5]. One famous example of technological determinism has emerged from autonomist approaches toward technology. In this approach, the development of modern technology is based on a special kind of internal logic and cannot be controlled by any element other than modern technology itself, such as human society. The autonomous approach, as seen in the works of the French thinker Ellul [8],...
A Critical Study of Presumptions of Socio-Technical Transitions from the Point of View of the School of Critical Realism
, M.Sc. Thesis Sharif University of Technology ; Taqavi, Mostafa (Supervisor)
Abstract
One of the questions which has its origin in science and technology studies and innovation studies, but neglected, is that of how we understand the transition and how the transition processes occur. In recent decades, such questions have fallen into an interdisciplinary field called Transition Studies. The main purpose of transition studies is to identify and solve complex and multilevel issues and challenges (such as climate change). Drawing on the views of theorists such as Roy Bhaskar and Frank Geels, this thesis seeks to critically study the foundations and assumptions of a particular type of transition called socio-technical transitions. Socio-technical transitions refer to the changes...
On Possibility of Alternative Technology (Considering Andrew Feinberg’s Theory)
, M.Sc. Thesis Sharif University of Technology ; Hosseini Sarvary, Hasan (Supervisor)
Abstract
Considering the undeniable role of technology in modern era, we investigate both the concept of technology as well as its relation as a tool with human beings. Modern technologies have had both positive and negative impact on human individual and social lives. In particular, the labor problems, environmental problems, distortion of the classic human perception of the world, and many other problems provide a very disparate perspective compare with the notion of techno-utopianism. Therefore, many contemporary philosophers such as Andrew Feinberg have made serious criticisms of technology and its consequences. Feinberg states that there is a possibility in reforming the currently derailed role...
On Feenberg’s Alternative Thinking About Virtual Space Technologies
, M.Sc. Thesis Sharif University of Technology ; Taghavi, Mostafa (Supervisor)
Abstract
Cultural and social problems in the modern age have motivated many thinkers to analyze modernity. Some of them have tried to solve these problems and, if possible, prevent their occurrence in the future. Proposed solutions are mostly dystopian, i.e. by being disappointed, they think the only possible way to overcome these problems is to annihilate modern civilization, or they pursue a passive approach; i.e. they have accepted the problems of modernity but only seek a way to mitigate its challenges. Among these, solutions which try to make use of the capacities of the modern civilization, especially emerging technologies, are really scarce. These approaches seek to realize (and make...
Synthesis and Application of Heterogeneous Catalysts in Oxidative C-O Coupling by Direct C-H Bond Activation of Formamides
, M.Sc. Thesis Sharif University of Technology ; Matloubi Moghaddam, Firouz (Supervisor)
Abstract
The magnetic MOF-based catalytic system has been reported here to be an efficient catalyst for synthesis of carbamates under optimal conditions. The robust MOF catalyst was built based on magnetic nanoparticles and HKUST-1 which further modified with thioacetamide and carbonization. The catalyst structure was confirmed by various techniques. Furthermore, the products’ yields were obtained in good to excellent for all reactions under mild conditions which result from superior activity of the synthesized heterogeneous catalyst containing Cupper. Also, the magnetic property of the MOF-based catalyst makes it easy to separate from reaction mediums and reuse in the next runs. In summary, the...
Synthesis & Characterization of Au-HKUST-1 Nanocomposite and Evaluation of Plasmonic Properties of Gold Nanoparticles in this Nanocomposite
, M.Sc. Thesis Sharif University of Technology ; Madaah Hosseini, Hamid Reza (Supervisor)
Abstract
In the past few years, many research works on the controllable integration of metal nanoparticles and metal-organic frameworks were done, since the obtained composite material shows a synergism effect in catalysis and photocatalysis, drug delivery applications, gas, and energy storage, as well as sensing. For the first time, in this study, we employed template-assisted growth to synthesize Au-HKUST-1 Nanocomposite. XRD analysis entirely confirms that employing this strategy in synthesizing Au-HKUST-1 was wholly successful, and the plasmonic properties of this nanostructure were studied via UV-visible spectroscopy. In the course of synthesis, gold nanoparticles with 70nm diameter were...
Dissipative quantum metrology in manybody systems of identical particles
, Article New Journal of Physics ; Vol. 16, issue , January , 2014 ; Alipour, S ; Rezakhani, A. T ; Sharif University of Technology
Abstract
Estimation of physical parameters is essential in almost any part of science and technology. The enhancement of performance in this task (e.g. beating the standard classical shot-noise limit) using available physical resources is a major goal in metrology. Quantum metrology in closed systems has indicated that entanglement in such systems may be a useful resource. However, whether in open quantum systems such enhancements may still show up is not yet fully understood. Here, we consider a dissipative (open) quantum system of identical particles in which a parameter of the open dynamics itself is to be estimated. We employ a recently developed dissipative quantum metrology framework, and...
Quantum metrology in open systems: Dissipative cramer-rao bound
, Article Physical Review Letters ; Volume 112, Issue 12 , 2014 ; 00319007 (ISSN) ; Mehboudi, M ; Rezakhani, A. T ; Sharif University of Technology
American Physical Society
2014
Abstract
Estimation of parameters is a pivotal task throughout science and technology. The quantum Cramér-Rao bound provides a fundamental limit of precision allowed to be achieved under quantum theory. For closed quantum systems, it has been shown how the estimation precision depends on the underlying dynamics. Here, we propose a general formulation for metrology scenarios in open quantum systems, aiming to relate the precision more directly to properties of the underlying dynamics. This feature may be employed to enhance an estimation precision, e.g., by quantum control techniques. Specifically, we derive a Cramér-Rao bound for a fairly large class of open system dynamics, which is governed by a...
Improved depth resolution and depth-of-field in temporal integral imaging systems through non-uniform and curved time-lens array
, Article Optics Express ; Volume 28, Issue 5 , 2020 , Pages 6261-6276 ; Behzadfar, S ; Kavehvash, Z ; Sharif University of Technology
OSA - The Optical Society
2020
Abstract
Observing and studying the evolution of rare non-repetitive natural phenomena such as optical rogue waves or dynamic chemical processes in living cells is a crucial necessity for developing science and technologies relating to them. One indispensable technique for investigating these fast evolutions is temporal imaging systems. However, just as conventional spatial imaging systems are incapable of capturing depth information of a three-dimensional scene, typical temporal imaging systems also lack this ability to retrieve depth information—different dispersions in a complex pulse. Therefore, enabling temporal imaging systems to provide these information with great detail would add a new facet...
Metal–organic frameworks (MOFs) for cancer therapy
, Article Materials ; Volume 14, Issue 23 , 2021 ; 19961944 (ISSN) ; Rabiee, N ; Mozafari, M ; Verpoort, F ; Voskressensky, L. G ; Luque, R ; Sharif University of Technology
MDPI
2021
Abstract
MOFs exhibit inherent extraordinary features for diverse applications ranging from cataly-sis, storage, and optics to chemosensory and biomedical science and technology. Several procedures including solvothermal, hydrothermal, mechanochemical, electrochemical, and ultrasound techniques have been used to synthesize MOFs with tailored features. A continued attempt has also been directed towards functionalizing MOFs via “post-synthetic modification” mainly by changing linkers (by altering the type, length, functionality, and charge of the linkers) or node components within the MOF framework. Additionally, efforts are aimed towards manipulating the size and morphology of crystallite domains in...
Analysis and design of a cable-driven mechanism for a spherical surgery robot
, Article 2015 22nd Iranian Conference on Biomedical Engineering, ICBME 2015, 25 November 2015 through 28 November 2015 ; 2015 , Pages 221-226 ; 9781467393515 (ISBN) ; Behzadipour, S ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2015
Abstract
This paper presents design and analysis of a cabledriven mechanism for a spherical laparoscopy surgical robot manufactured at the Research Center for Science and Technology in Medicine. The design is featured by two types of 'idler pulleys', which allow change of cables' plane of motion in spherical workspace. This robot suffers from back-lash and high friction due to the usage of motor and gear-box in each joint. In order to find a precise and optimal design, the paper studies various designs of cable robots, considering pulleys and cable arrangements, as well as pre-tensioning methods. Final scheme introduces two series of pulleys for each DOF, which transmits power from motors located on...
Business intelligence in e-learning: Case study on the Iran University of Science and Technology DataSet
, Article 2nd International Conference on Software Engineering and Data Mining, SEDM 2010, 23 June 2010 through 25 June 2010 ; June , 2010 , Pages 473-477 ; 9788988678213 (ISBN) ; Moaven, S ; Abolhassani, H ; Habibi, J ; Sharif University of Technology
2010
Abstract
Nowadays, e-learning platforms are widely used by universities and other research-based and educational institutions. Despite lots of advantages these educational environments provide for organizations, yet there are many unresolved problems which cause instructors and training managers with some difficulties to get proper information about the students' learning behavior. On one hand, lack of tools to measure, assess, and evaluate the performance of learners in educational activities has led the educators to fail to guarantee the success of learning process. On the other hand, strict structure of learning materials prevents students to acquire knowledge based on their learning style....
Smart nanostructures for cargo delivery: uncaging and activating by light
, Article Journal of the American Chemical Society ; Volume 139, Issue 13 , 2017 , Pages 4584-4610 ; 00027863 (ISSN) ; Sahandi Zangabad, P ; Baghaee Ravari, S ; Ghazadeh, M ; Mirshekari, H ; Hamblin, M. R ; Sharif University of Technology
Abstract
Nanotechnology has begun to play a remarkable role in various fields of science and technology. In biomedical applications, nanoparticles have opened new horizons, especially for biosensing, targeted delivery of therapeutics, and so forth. Among drug delivery systems (DDSs), smart nanocarriers that respond to specific stimuli in their environment represent a growing field. Nanoplatforms that can be activated by an external application of light can be used for a wide variety of photoactivated therapies, especially light-triggered DDSs, relying on photoisomerization, photo-cross-linking/un-cross-linking, photoreduction, and so forth. In addition, light activation has potential in photodynamic...