Sharif Digital Repository

Nonlinear state estimation algorithms developed based on Bayesian framework have been increasingly utilized in space navigation and attitude estimation to enhance the mission performance. However, successful implementation of these algorithms requires accurate knowledge of process and measurement noise statistical properties. As the satellites experience various systematic and environmental uncertainties on orbit, no priori information of noise characteristics is usually available. In this regard, adaptive estimation algorithms have been widely utilized to tune the planned noise properties according to the variable working conditions. Among various adaptation methods, innovation-based... 

This Thesis aim to study the evolution of knowledge network in the path of innovation capability accumulation in knowledge-based firms, active in Iran's innovation system as a sanctioned economy. The research, by an in-depth case study and at the micro level, examines the accumulation of capabilities and the evolution of the knowledge networks for two knowledge-based firms active in the manufacture of linear accelerators and cargo-scanners as high-tech products. The results show that 1) the accumulation of capabilities from low levels to advance is based on product diversity and the knowledge inputs, which was first through "using, doing and interacting" has changed to "science, technology... 

Although laws vary in the competitive business world of today and the changing supply and demand parameters show that the process of delivering new products to market is very important.Most organizations today have found that spending more than ever on trusting in traditional competitive levers such as quality, cost reduction and differentiation in selling more products and services are not enough to be successful in market, instead notions such as speed, flexibility andagility can have a significant trend toward offering new products and services. There aresome good reasons for knew that organizations need new ways to develop their new products to survival, compete with its competitors and... 

In the current situation and considering the economic conditions, entrepreneurship and self-employment are important factors of business growth. To prepare people in this field, there is a need for effective training that can motivate people. Identifying the effective methods and different dimensions of the entrepreneurship education framework that can lead to setting up a successful program for training people and facilitate the way to achieve the goal of education is one of the important goals of this research. By studying the literature from 2010 onwards, this research systematically examined 96 articles and tried to improve the framework of entrepreneurship education that was stated in... 

Today, global value chains(GVCs) have distributed the production of goods and services all over the world and have become the main part of global trade. GVCs provide developing countries with oppurtunities for engaging in economic activity and producing goods, without developing all the infrastructure needed for producing it yourself. but participating in GVCs also pose some challenges to developing countries. if developing countries do not enhance their ability for generating value-added, by losing the advantage of cheap labour over time, they will fall into the so-called "middle-income trap". therefore upgrading, with the broad definition of generating more value-added, should be targeted... 

The application of membranes for separate of particles in mainly microbial flacs , are fast growing in biological treatment systems. Membrane bioreactors are now considered as one of the major new processes in wastewater treatment. However , membranes are expensive and costly. This study is carried out to test an innovative , locally made filters for separation of flocs in an MBBR reactor. This innovative filter is replacing a traditional settling tank. This type of filters is made very cheaply and has important advantages in installing and operation. Experiments were carried out in a laboratory scale MBBR unit. A filter unit consisting of 3 innovative filter tubes were placed and the... 

New technology-based firms (NTBFs) are the driving force behind creating innovation and technology in countries and can play a crucial role in job creation and economic growth. These companies also facilitate technology transfer and strengthen the absorptive capacity of national innovation systems. Therefore, given the externalities of these companies, as well as their significant role in promoting innovation, governments around the world implement policies to support these firms. In Iran, the Vice President for Science and Technology has implemented policies to support NTBFs since 2013. Recently, a few studies have been carried out to evaluate these policies. However, the number of these... 

One of the best ways to overcome the weaknesses of technology services in different industries is right technology transfer with feasibility in the country. 3D painters have been recently widely used industrially in different countries. The 3D printer is one of the new emerging technologies, enabling the production of every 3D objects with any complexity. 3D printing has provided the possibility of producing, in fastest, more economics and regardless of those complexities. By transfer of this kind of technology and proper management, a huge transformation can created in all industries and factories. To do this, there are several technologies of 3D printing, that each of them used in various... 

Lithium ion battery is one of the innovative and emerging technologies in energy sector that has played a major role in electricity supply security by integration of renewable energy technologies in electrical grid, implementation of electrical transportation system and de-carbonation of the both sectors in recent years. On the other hand, the formation of the potential market of technology as one of the functions of the technological innovation system plays an essential role in creation and advancement of innovation in the energy sector. Therefore, in this thesis, the development of lithium ion battery technology in Iran has been investigated from the perspective of the technology market in... 

New century came with changes in a series of global macro trends, especially a greater dispersion of knowledge, which undermines the effectiveness of innovation based on internal R&D. Many of successful organizations responded to this problem by opening their borders to exchange ideas and make cooperation with external actors in their innovation activities, which is known as "open innovation". Innovation in the defense industry, which always deals with challenges to keep its readiness alive, is traditionally based on internal R&D. These industries, as well as civilian industries, face the new macro trends including budget cut and knowledge dispersion, which reduces the effectiveness of their...