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Case Study of Absorption Capacity Growth Mechnisms in Farab and Bootan
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
In this study; technology transfer to the Farab and Butan fromabsorptive capacity perspective is under inquiry. First we have complete literature review until we can provide good understanding toward absorptive capacity concept in organizational level. George and Zahra model has been chosen as a base model. Farab and Butan have chosen because of their recent successes in knowledge transfer. Based on George and Zahra model we develop a semi-structured questionnair and run it in Farab and Butan. We have findings in how organization can transfer knowledge to their networks to increase their AC, also we have findings in different ways organizations transfer different kinds of knowledge
The Theoretical Design and Empirical Experimentation of a Systems Thinking Education Package Intended to Improve Learner Incentive
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
Systems Thinking is a key to improve the quality of decision making in various situations such as social, political, economic and managerial ones. Systems Thinking is considered a foundation of Organizational Learning and currently has a crucial and cultivating role in the management literature. Therefore, it is now critical for organizations to have people within them who are able to think systematically. This need for possessing Systems Thinkers in organizations highlights the importance of the education of Systems Thinking. An evidence for this is the growing importance of Systems Thinking Education in the Systems Thinking Literature. On the other hand, one of the most important issues in...
The Effect of Ownership Structure and Board Composition as Corporate Governance Mechanisms on Coroporate Value
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
In this research we examine the effects of internal corporate governance mechanisms on shareholder value of 247 firms that were accepted in Tehran Stock Exchange. The main focus is on ownership structure and board composition. Owners with different identities affect shareholder value both directly and to some extent indirectly (through affecting board composition). We measured firm value using 2 different measures: relative growth of share price and market to book value of the firm. Controlling for industry effects, considering different levels of competitiveness, we find that private owners affect firm value more positively than governments and so do institutional investors more than...
Empirical Research of Strategic Renewal using a Comprehensive Framework of Organizational Learning
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
Study of "Strategic Renewal" by means of "Organizational Learning's processes" was the main intention of this research. At first, we reviewed strategic renewal and organizational learning literature to have better knowledge of relationships between them. 4i Model considered as a base for our research. Tehran Information Technology Organization (TITO) was selected as a case study environment because of many strategic changes, it had in recent years. We designed a qualitative research method for studying 4i model and relationships between strategic renewal and organizational learning, based on research method used previously for testing 4i model. Accordingly, some considerable outcomes...
Investigating the Knowledge, Usage and Attitude of Exporters to the Support Programs of the Trade Promotion Organization of Iran
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
In this study, we seek to evaluate the three factors of knowledge level, the rate of use and attitude of exporting companies to the services provided by Iran Trade Promotion Organization. A questionnaire was used to collect information and data from 68 active companies in different industries of the country. Questions are about the 8 support packages officialy provided by the trade promotion organization to help exporters. In this research, we first studied the importance of the subject and the theories presented in this regard, and then we examined the similar studies conducted in other countries. Afterwards, we describe the tools used to collect information and present the results of the...
Analysis of the Level of Learning in the Research Office of Sharif University of Technology based on Single Loop and Double Loop Learning Models
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
Today the economical and technological success of a nation is based upon the amount of knowledge that is created within that nation. Thus universities, as the main engines for creating knowledge, are held responsible for this matter. Sharif University is one of the top universities in Iran; which is fortunate to have some of the very high quality faculties across nation and has been succesfull so far to attract the highest ranked students for both its undergraduate and graduate programs. Unfortunately, despite its potentials, Sharif University has not reached its desirable place in the world and nation’s ranking of universities according to their research index. This research has thus...
Studying Impediments Social Learning in Economic Policymaking Community of Iran
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
Social learning approach in economic policymaking is introduced against conflict-based approach in the similar context. Helco, 1973 first studied the effects of such a learning in economic policymaking and said ”men collectively wondering what to do… Governments not only ‘power’… they also puzzle.” The important point in studying policymaking through social learning approach is paradigm shifts in peoples’ mental models. In this approach, policies are not only the result of conflict between different interests but also are the output of a learning process. In this research we first assume that social learning has not occurred in policymaking community and that individual learning has...
Parallel Layers of Strategic Renewal and the Leveraging Role of Organizational Structure
, Ph.D. Dissertation Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor) ; Alavi, Babak (Co-Supervisor)
Abstract
One of the research areas less-addresses in the field of strategy – especially with a process approach – is strategic renewal. Strategic renewal is crucial for sustainable success of an organization. However, there are limited studies focused on strategic renewal, its implementation, and factors affecting its successive success. Process view is also less applied despite its importance both in understanding different steps of renewal and determining motivators and impediments. Therefore, this study tries to do a process-oriented research on strategic renewal, considering the gaps in extant process models on renewal. For this aim, an embedded single case study is applied and some successful...
Dynamic Capabilities in Public Sector; Charectiristics and Function
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor)
Abstract
In this study, the concept of dynamic capabilities is extended to strategic management of public sector organizations. For this purpose, an extensive literature review is performed on strategic management of public and non-profit organizations to identify the main characteristics of them, and the essential differences of these organisations with private sector. Afterwards, the literature on dynamic capabilities is reviewed to distinguish their characteristics and operating process in private organizations. Following the results of the previous sections, i.e. “performance and characteristics of dynamic capabilities in private organizations” and “characteristics of public organizations”, some...
Investigating Factors Affecting Petrochemical Value Chain Completion and Policies for Improvement
, M.Sc. Thesis Sharif University of Technology ; Maleki, Ali (Supervisor) ; Mashyekhi, Ali Naghi (Supervisor)
Abstract
Despite the growth in Iran’s petrochemical production, most of the plants are concentrated upstream; although the government has made various interventions to promote industrial development. The literature review shows that government intervention is necessary to solve market failures, especially in developing countries; but it should be tailored to the specific context and especially the distribution of the power. Most experts believe that the cause of the above phenomenon is feedstock rent and the reason for its continuation is the political influence of petrochemical companies. While not rejecting this view, we try to provide policy recommendations by looking more closely at the issue and...
Investigating the Logistic of Chabahar Free Zone by Data Analysis Tools
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor) ; Aslani, Shirin (Supervisor)
Abstract
In recent years, the application of data analysis in the field of management has grown significantly. One of the most important of these areas is operations. One of the key tasks of operations management is logistics management. Logistics means managing the flow of goods, information or any other source; Like energy or humans,it is between the place of production or the place of inventory to the place of consumption. Logistics is the art and science of acquiring production, distributing materials and products in the right amount and place. Logistics includes information integration, transportation, inventory, warehousing, handling and packaging.If the flow of goods is done properly; We will...
Agency and Large-Scale Institutional Changes; The Study of the Creation of the Biopharmaceutical Industry in Iran
, Ph.D. Dissertation Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor) ; Miremadi, Iman (Supervisor) ; Maleki, Ali (Co-Supervisor)
Abstract
Neither state planning nor economic liberalization has been the answer for developing countries to escape from the middle-income trap, mainly due to presence of institutional voids and due to the governance of hindering institutions. Therefore, we need another explanation for how of the development, which must include how institutions change and how new institutions and new institutional fields emerge. Developing countries are full of institutional voids and the governance of hindering institutions. Therefore, the process of economic development in these countries, is beyond the power of market and state, and needs agency. Responding to the recent call by the literature for doing more...
A Study on Readiness for Change in Project-Based Organizations that are Establishing a Project Management Office (PMO)
, M.Sc. Thesis Sharif University of Technology ; Mashayekhi, Ali Naghi (Supervisor) ; Alavi, Babak (Supervisor)
Abstract
A great rise in the number of projects undertaken simultaneously within organizations and consequently, a further increase in the complexity of managing them, has led to emerging innovative forms of organizational structures. There are new concepts developing in project management literature such as program management, portfolio management and project management offices (PMOs). PMOs have recently been used as a means for managing large projects, based on the need for an overall, coherent approach. Project offices are established to coordinate portfolios of projects and achieve project management oversight, control and support. Based on the structure and definition proposed by Hill (2004), it...
The Behavior of Supporting Structures with Pretension Anchors by Geotechnical Softwares
, M.Sc. Thesis Sharif University of Technology ; Ahmadi, Mohammad Mehdi (Supervisor)
Abstract
In recent years, due to urban expansion and population growth, number of floors and excavations depth has increased. Stabilization of excavations is one of the most important issues in geotechnical engineering. Today, one of the most widely used methods that is used in deep excavations is brace soil by steels and pretension them. In this thesis tries to evaluate static behavior of flexible supporting structures with pretension anchors by using PLAXIS2D, FLAC3D and GEOSTUDIO softwares. The objective of this modeling is better understanding the static behavior of walls, comparing the two and three dimensional modeling and the effect of corners of excavation on deformation. The results shows...
An efficient uniform-segmented neuron model for large-scale neuromorphic circuit design: Simulation and FPGA synthesis results
, Article IEEE Transactions on Circuits and Systems I: Regular Papers ; Volume 66, Issue 6 , 2019 , Pages 2336-2349 ; 15498328 (ISSN) ; Abolfathi, H ; Ahmadi, A ; Ahmadi, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2019
Abstract
Large-scale simulation of spiking neural networks on hardware with a remarkable resemblance to their mathematical models is a key objective of the neuromorphic discipline. This issue is, however, considerably resource-intensive due to the presence of nonlinear terms in neuron models. This paper proposes a novel uniform piecewise linear segmentation approach for nonlinear function evaluations. Employing the proposed approach, we present a uniform-segmented adaptive exponential neuron model capable of accurately producing various responses exhibited by the original model and suitable for efficient large-scale implementation. In contrast to previous nonuniform-segmented neuron models, the...
A simple and efficient method for segmentation and classification of aerial images
, Article Proceedings of the 2013 6th International Congress on Image and Signal Processing, CISP 2013 ; Volume 1 , 2013 , Pages 566-570 ; 9781479927647 (ISBN) ; Sharif University of Technology
2013
Abstract
Segmentation of aerial images has been a challenging task in recent years. This paper introduces a simple and efficient method for segmentation and classification of aerial images based on a pixel-level classification. To this end, we use the Gabor texture features in HSV color space as our best experienced features for aerial images segmentation and classification. We test different classifiers including KNN, SVM and a classifier based on sparse representation. Comparison of our proposed method with a sample of segmentation pre-process based classification methods shows that our pixel-wise approach results in higher accuracy results with lower computation time
Prediction of pore facies using GMDH-type neural networks: a case study from the South Pars gas field, Persian Gulf basin
, Article Geopersia ; Volume 8, Issue 1 , March , 2018 , Pages 43-60 ; 22287817 (ISSN) ; Kadkhodaie, A ; Ahmadi, B ; Ahmadi, B ; Faraji, M. A ; Sharif University of Technology
University of Tehran
2018
Abstract
Pore facies analysis plays an important role in the classification of reservoir rocks and reservoir simulation studies. The current study proposes a two-step approach for pore facies characterization in the carbonate reservoirs with an example from the Kangan and Dalan formations in the South Pars gas field. In the first step, pore facieswere determined based on Mercury Injection Capillary Pressure (MICP) data in corporation with the Hierarchical Clustering Analysis (HCA) method. Each pore facies represents a specific type of pore geometry indicating the interaction between the primary rock fabric and its diagenetic overprints. In the next step, polynomial meta-models were established based...
Parallel-plate waveguide integrated filters and lenses realized by metallic posts for terahertz applications
, Article International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 25 September 2016 through 30 September 2016 ; Volume 2016-November , 2016 ; 21622027 (ISSN) ; 9781467384858 (ISBN) ; Sharif University of Technology
IEEE Computer Society
2016
Abstract
In this paper, we report on the design and analysis of filters and lenses realized by an array of metallic posts integrated in a parallel-plate waveguide (PPWG). The design methodology of these components is inferred from the modal analysis of a spoof surface plasmonic waveguide composed of metallic posts arranged in a 1D periodic structure inside PPWG. Samples of the proposed devices are analyzed using a full-wave analysis method and their performance is assessed. We show that the mentioned structure can be used to realize all-metallic band-pass filters and lenses for mm-wave and terahertz applications
A novel modelling and optimisation of gain-boosted cascode amplifiers for high speed applications
, Article 2003 10th IEEE International Conference on Electronics, Circuits and Systems, ICECS2003, Sharjah, 14 December 2003 through 17 December 2003 ; Volume 2 , 2003 , Pages 683-686 ; 0780381637 (ISBN); 9780780381636 (ISBN) ; Sharif University of Technology
2003
Abstract
Gain-boosted cascode amplifiers are good choices for power optimiied high-speed amplifiers. In this paper, after a comprehensive study on the pole-zero locus and time response, a generic and perfect model is developed for these amplifiers. By the help of this novel modeling method, the optimum parameters for the feedback or auxiliary amplifier are determined, in order to eliminate the well-known slow timing component in the step response and obtain the minimum achievable senling time. The required circuit conditions as well as a straightforward design procedure for realizing the results of the analytic analysis are presented, finally. © 2003 IEEE
Diagnostic and Prognostic Value of miR-451 Expression in Colorectal Cancer: A Meta-Analysis
, Article Asian Pacific Journal of Cancer Prevention ; Volume 25, Issue 6 , 2024 , Pages 1903-1910 ; 15137368 (ISSN) ; Koushki, M ; Ahmadi, N. A ; Ahmadi, H ; Tavirani, M. R ; Sharif University of Technology
2024
Abstract
Background: The miR-451 has been reported to play an important role in colorectal cancer (CRC) pathogenesis and can be a pivotal diagnosis biomarker of CRC. Given the contradictions in the diagnosis value of the miR-451 in patients with CRC, deciphering the diagnostic/prognostic role of this miRNA in CRC will support the identification of a novel therapeutic target for CRC. Therefore, in the present meta-analysis, we evaluated the diagnostic value of miR-451 in CRC patients. Materials and methods: The electronic databases of Embase, PubMed, ISI Web of Science, and Scopus systematically searched for relevant studies. The odds ratio (OR) with a 95% confidence interval (CI) was calculated to...