Sharif Digital Repository

Nowadays, base isolation technique is widely used in the old and new structures, so it is necessary to assess the seismic performance of base-isolated buildings probabilistically, it is also essential to assess their performance during near-source versus far-field earthquakes.
Developing the fragility curves is useful probabilistic method for the seismic assessment of structures. These curves define the probability of exceedance of different damage states for a given level of seismic intensity parameter. Former investigations has been done to assess the seismic behavior of base isolation systems consider base isolated highway bridge piers.
In this thesis fragility curves are derived... 

Soft computing consists of a set of powerful methods that have been successfully applied to many different application domains, including business, engineering, and bioinformatics. In this research we propose an innovative approach that uses genetic algorithms to mine a set of behavior data output by a biological system in order to determine the kinetic parameters of the system. In our approach, the machine learning method is integrated with the framework of existent biological information in a wiring diagram so that its findings are expressed in a form of system dynamic behavior. An application of the method to the cell division cycle model has shown that the method can discover optimum... 

Since the Iranian oil terminals company(I.O.T.C.) has been the main and strategic gateway of exporting petroleum in the country and plays an important role in the optimum continuity of national, regional and international energy supply chain and also conducting the needed projects whit a desirable quality and minimum time and cost has a prominent influence on steady continuity of manufacturing, importing and exporting of petroleum and gas production. The main purpose of doing this thesis is diagnosing the process of approval, design and implementation of projects in the I.O.T.C., Thus, whit regarding to the modern needs of implementing projects and the necessity of reviewing the structure... 

To deliver gas in time to different consumers like as industrial, commercial and domestic users is one of the most important parts in gas industry. So it is very important to utilize these projects in the specified time. There are huge harms for client, contractors and consumers when there is a delay in project utilization. To identify effective parameters on delays to remove them in future is an essential factor. In this research, all delay causes for TPGC (Tehran Province Gas Company) projects are analyzed and some solutions to remove these delays are presented. 10 hypotheses in relation of gas delivery have been assumed as delay causes. Then some questions have been discussed in relation... 

Nowadays, in communication industry, specially data network, in which service quality is a serious parameter, request for making connection with appropriate quality (Proportionate to demands) and necessity of clarification of obligations of service providers and customers, as well as customer awareness of submitted materials and offering various services with different qualities & costs, led service providers, specially IP based networks, to make agreements with their customers, entitled service Level Agreement (SLA). The SLA specifies the service type, mutual obligations, related parameters, measuring methods, violation threshold, penalties and loss compensation. Whereas, applying... 

Water is crucial to human being. We use water for a wide variety of uses daily. However, leakage has caused substantial water loss to our precious processed water. The major contributor to non-revenue water in Iran is pipeline leakages. The water industry in the nation has invested in equipment to detect and localize leaks in water distribution systems. One of the equipment mentioned is acoustic-based. The principle of acoustic is that whenever a leak is present in a pipeline, noise is generated and will travel along the pipeline. The acoustic leak detection method is then derived by calculating the distance traveled by this noise generated by the leak. Different equipment based on acoustic... 

Increasing population and competition for producing various productions and also more consumption in recent decades, result in producing more wastes. Therefore effective and continuous waste management is essential for monitoring the process (from the wastes generation source to the waste disposal) and establishing the efficient strategies to reduce wastes. One of the major sources of waste generation is hospitals that cause lots of environmental problem unless they are managed properly.Recycling is an important element of waste management that can reduce costs by innovative and proper management. The purpose of this research is identification of recyclable plastic items and estimates the... 

The main purpose of this thesis is to analyze the total productive maintenance based on computerized maintenance management system. At first, a detailed study on total productive maintenance is performed and then the requirements of this maintenance strategy are specified. Also, a computerized maintenance management system is defined which can help total productive maintenance to reach to its requirements. Finally, a conceptual model and entity-relationship model for computerized maintenance management system data base has been created  

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... 

Lack of financial sources for production and performing projects has been an effective issue in all governmental and non-governmental organizations. So, using a structure with capability of detecting and forecasting all expenses and costs, and being able to convert the mass of data into useful and instrumental reports for managerial decision such as estimating total cost, selecting the syntax of production and etc is obvious for recourse management of every organization. Among the various components of the cost engineering system, cost management system by recording and allocating cost is an important issue in efficiency of every cost engineering system.In this thesis, Automotive Industrial... 

The main aim of this thesis is to develop the technical knowledge of designing and making active ingredients of domestically produced drugs, decreasing the costs, independency in producing these products, and checking outflow of currency. It also aims to reduce the financial challenges of patients who have to pay huge amounts for such drugs. Conducting research in the field of reverse engineering and using its definition, and attempt in made to get knowledge into the stages of product development process, to determine the technical standards associated with each stage, to recognize how knowledge is shared during this process, and to present some methods of establishing the infrastructure... 

Today, organizations are surrounded by basic and continuous changes such as declining organizational resources, reduction of the production cycles, and the need for rapid adaption. Those organizations remain competitive while maintaining their productivity, that have following characteristics: accurately plan and assess their knowledge resources, create and absorb beneficial knowledge, store and organize their knowledge, disseminate knowledge to needed areas, and use knowledge in practice and decision making, to improve their products/services as well as their performance. Therefore, the human capital has been considered as knowledge owners and the most important organizational resource, on... 

Swarm robots have been interested by researchers in recent years. The most important reason of this attention is the abilities of these systems for doing some works that a single robot can’t do them alone. The goal of this article is formation control of a group of flying robots with nonholonomic dynamics. The agents are considered helicopters with dimension, mass and moment of inertia. Firstly, the dynamics equation of helicopter will be derived as for Newton-Euler method. Next, input-output equations will be derived and controller will be designed by using sliding mode method. Main rotor and tail rotor thrusts, roll and pitch torques of main rotor are the system inputs. The control method... 

In the process of industrial and economic development and in the competitive environment in the world, reducing the cost of industrial products is an important factor for more customers' satisfaction, more revenue acquisition, and stability and success in the business. Cost engineering is the area of engineering practice concerned with the application of scientific principles and techniques to problems of cost estimating, cost control, business planning, management science, profitability analysis, project management, planning and scheduling. In this research through the studying the structures and models of cost engineering, in addition to consider this dimensions of cost engineering, the... 

In recent decades many countries have attempted to measure and formulate customer satisfaction index (CSI), as an important factor in micro and macro-economic level. In developed country CSI has the same value of GNP. Customer Satisfaction Index model actually represents the relationship between primary factors of satisfaction and satisfaction results in the macro level for a country and includes all business aspects. In many countries, industrial companies have a wide range of products and providing Customer Satisfaction Index model for this aspect which can be a base of presenting national customer satisfaction index model. Accordingly, the main goal of this study is providing an Iranian... 

People in the organization who are influential, opinion leaders, decision-makers and approvers need to be incorporated into the entire Strategic Planning process at some levels .The Management of these Stakeholders involves identifying their organizational roles and their disposition towards and understanding of Strategic Planning, then to work with them throughout the process to improve or maintain their opinion of the value of Strategic Planning through continuous updating and addressing of their issues, concerns and questions. Physical asset practitioners apply the physical asset management framework and policies to ensure the performance and output potential of physical assets through... 

The increasing significance and deployment of knowledge management(KM) is the main reason for selecting the topic of this research. This research tries to analyse the dimensions and KM implementation methods in press section of maintenance department in Saipa company. This study has a qualitative approach and the method is based on a case study. Data has been collected by questionnaires. Two questionnares have been provided in this research and distributed among different staff of press section in maintenance department. The concept of knowledge management maturity is applied and the goal of first questionnaire is based on this concept. The level of KM maturity is assessed via this... 

So far, many activities have been done in regarding to decrease vehicles' pollution in the international level that the electric vehicles manufacture has been emphasized in recent years. According to these issues and need to decrease air and environment pollution, the use of fuel cell as a source of power generation can have a specific effect on decreasing this pollution. In our country, according to high statistics of manufacturing and offering vehicle particularly the vehicles with high pollution, there is a need to invest in the field of creating renewable (clean) energy production systems. Regarding to decrease environment pollution and according to the importance of fuel cell's... 

In the present era, data and its impressive access is considered to be one of the key elements in development, in a way that all social, economic process, severly require information. Today knowledge is the most important tool in competition of present and future markets. Implementation of knowledge management should be accomplished in a step by step process. One of the main goals of implementing knowledge management is increasing of the organizational productivity. This study has a qualitative approach and the method is based on a case study. Data has been collected by questionnaires. Due to this fact, knowledge management should be applied according to organizational productivity. Among... 

Multi-Criteria Decision-Making models have been considered by many researchers in recent years. In this study, considering the transition matrix, the probability of changing in the priories of the customers in the framework of a hybrid QFD-ANP has been proposed. The developed methodology is implemented to solve the supplier selection problem, one of the most important problems in the supply chain management, in a dairy manufacturer in Iran. The company is one of the most prominent companies that has a big segment of the dairy market. The results show the efficiency of the proposed methodology for multi-criteria decision-making problems.• Chapter 1) General research reasons for the purpose...