Sharif Digital Repository

The Internet is often used for communication-based applications such as online banking, stock trading, and shopping where service interruption is unacceptable. Thus, analysis of the impact of the failures of hardware, software, and related services’ performance quality of the service provided to users is of importance to designers and managers in these functions. In this study, we developed a strategy to the design of a dynamic combination of file servers with the aim of providing reliability and SLA. At first, we examine the reasons for the violation of service level in file host services and datacenters, and then we introduce the criteria to measure the violation of service level on the... 

Nowadays the concept of competition in business has been expanded from enterprises to supply chains. For success in this competitive environment, it should be established complete coordination and synchronization between different rings of the chain in both strategy and operations. The supply chain management is a factor for achieving to this purpose. Effective supply chain management, especially in complex supply chains like petroleum upstream supply chain, requires to strategic factors that propel the chain to the long term goals. Unfortunately, it is showing off the vacancy of attending to this case in the literature. This thesis tries to fill this gap in literature with a new approach... 

In today's turbulent environment, change is considered as requirements of any business and organizations need to change in order to remain competitive. Change management includes: control the processes of change within the organization and its compatibility with its processes in different organizational levels (group and individual). Lately organizations are realizing the power of social networks and their analytics to solve business challenges and produce innovation, and a growing trend of using social networks is seen. A social network is defined as a set of people, organizations or other social entities, connected by a set of socially meaningful relationships. According to this fact, the... 

Nowadays, the manufacturing environments have been faced with the globalization paradigm. This paradigm urges the new necessities for manufacturing environments like concentration on customer demands, focus on increase of quality and its continuous improving trend and shortening the products’ lifecycle. These necessities have been considered by many researchers and have led to different ideas in the field of effective and efficient product development and after sales services. Computer Integrated Manufacturing (CIM) is known as the major research field for study, development and proposal of effective IT solutions to fulfill the aforementioned necessities. This research filed has resulted to... 

Software development project management has always faced a lot of challenges and the success rate in these type of projects has always been lower than other types of projects. Information systems development projects have lots of complexities and the project management process in these projects is so important and critical. In order to solve some challenges and problems of information systems project management, iterative and incremental methodologies are presented. Lots of researches are conducted about traditional methods of project management and but there are still a lot of unknowns about iterative approach and management using this approach especially in the context of planning and time... 

Cloud Manufacturing is a new paradigm which under development and has been introduced as one of the promising models for providing ubiquitous, convenient, on-demand network access to a shared pool of configurable manufacturing resources (e.g, networks, servers, facilities, applications, robots, machines and services) that can be rapidly provisioned with minimal management effort and service provider’s interaction. Cloud Manufacturing is defined based on Cloud Computing. Like the Cloud Computing, Cloud Manufaturing offers a service-oriented architecture that is based on information technology (IT) in which each manufacturing resources is expressed as a service. For providing a... 

Nowadays, the modern manufacturing dramatically has changed due to the intense global competition and the globalization of economics, resources, and rapid progress in manufacturing systems, information, computer and information management. Cloud manufacturing systems are a new network-based manufacturing paradigm which by utilizing cloud computing and service generation enables technologies to transfer manufacturing resources into manufacturing services. Moreover, recent researches have shown that security, reliability, and quality are enhanced by cloud computing systems. In cloud manufacturing systems, resources that are located in different geographic points enable the distribution of... 

Nowadays. global competition in manufacturing industries is increasing dramatically. In fact, the traditional production systems are not able to satisfy the needs of customers whom their production complexity is increasing. In order to fulfill the mentioned challenge, a new manufacturing system entitled “cloud Manufacturing” is introduced. In this new paradigm, manufacturing resources and capabilities of production are virtualized through internet and in the whole life cycle of manufacturing and production. These resources are available for end-users via the internet based on an XaaS (everything as aservice) approach. Moreover, although there are some limitations when manufacturing services... 

In each organization, decision-making about products and their impact on the profitability of the organization is vital. Today, with the constant changes and resource constraints, as well as the growing importance of environmental issues for organizations, creating a decision model that considers all of the aformentioned aspects is vital. This study considers ten effective factors related to product portfolio and focuses on maintaining business sustainability in multi-product organizations. First, by assessing the relationship between criteria and products, the priority and weight of each of the criteria by the network analysis process (ANP) method are determined. In the next step, using the... 

Today, Information Technology is a critical aspect for the development of the modern manufacturing industry. Network technology can connect customers, partners, and the general public to work together and provide resources across the supply chain to improve product performance. To meet the goal of higher performance with lower operational costs and shorter delivery times for new products, many network-driven or service-oriented models have been proposed. These models focus more on communicating with dispersed partners rather than Integrated management and generalization of dynamic resource partnerships. But, cloud manufacturing has been recognized in the literature for generating computing... 

In recent years, economy globalization has led to a major focus on the needs of customers, Moreover globalization has resulted in geographically distributed suppliers across the globe. In such a space, using cloud manufacturing as one of the novel technologies in manufacturing that deals with resource management has been more and more taken into consideration. one of the most important issues in cloud manufacturing is service composition, in which, after receiving customer’s demand, a combination of cloud services is provided to meet customer’s demand. In fact, the customer's need is decomposed in different tasks, each of which is carried out by one (or more) manufacturing plant. the purpose... 

Nowadays, both academic and industrial environment have come to the conclusion that recent manufacturing paradigms are probably no longer applicable to the ever-changing today’s business environments. That is why manufacturing is moving gradually from production-oriented to service-oriented approaches. Service-oriented manufacturing results in a variety of services through a product life cycle which create an abundance of high value-added markets promoting efficient collaboration and amazing innovation. Cloud Manufacturing as an intelligent newly developed service-oriented manufacturing paradigm provides platforms of shared and interconnected distributed manufacturing resources and... 

With the advent of Internet technology and globalization, the use of enterprise resource planning systems, through the Internet, is growing and indicates access to information and communication as part of a global business strategy.. With the extension of Internet penetration, cloud processing has attracted particular attention. According to this process, due to issues such as maintenance costs, reliability, and scalability, much attention has been paid to cloud enterprise resource planning systems. But major attention has been paid to ERP as a software service, and less has been given to providing cloud platform to develop and integrate enterprise resource planning systems in a supply... 

Regarding to emergence of the globalization concepts in manufacturing, technology and information technology has come to aid of the organizations to expand communication across the globe, in order that companies can overcome many of their deficiencies in this way. To achieve this goal, Cloud Manufacturing (CMfg) system have been investigated, while today the CMfg is a new manufacturing paradigm and is one of the dominant concepts in manufacturing industries. Regarding to the nature of the cloud, the resources used to meet the customer demands are not necessarily concentrated in a specific geographic location, or the demand of a customer may not be satisfied with a distinct service, as a... 

Reconfigurable Manufacturing system (RMS) is used to surge the speed of production and its flexibility of it which is restricted to limited extent. Its flexibility confined to at most that is essential to fabricate the members of a part family. This thesis proposes a novel model for RMS, that, that is a manufacturing framework that is cost-effectively and at the minimum time responses to changesto changes and can fulfill thefulfill marketthe demandmarket demands rapidly. In many researches the minimization of timeof time and cost is the main factors that is making anmake impressionan onimpression projecton the performance of the performanceproject. In the frame offrame theof... 

Staff assessment in a performance management system is the formal process for measuring and providing feedback to employees about the performance and the required actions to accomplish their responsibilities as well as understanding their abilities to plan and empower their future career path development. Enhancing the recovery of organizations creates a massive force that can drive growth and development programs and create organizational opportunities. For this reason, the hypothesis of this research is also given in this regard, which can be used to assess and evaluate the performance of social organizations by determining the criteria for evaluating performance and designing an... 

The business model is very important, as many researchers in this field believe that the success or failure of a business is highly dependent on right design and application of this model. In most recent innovation studies, application of innovation in business models or developing an innovative business model itself is one of the main factors to enable an organization to have stable status in the competitive market. This is unlike the traditional believes, which technology and process were the main motivators behind organization to stand out in competitive market. Designing a proper business model requires a system thinking approach, which considers both internal interactions factors, and... 

E-Work is defined as collaborative, communication-enabled and computer-supported productive activities in distributed organizations consist of humans with robots and autonomous systems. From the levels of nano and micro systems and devices all the way to the level of global enterprise networks, productive work is reshaped by e-Work. The current literature emphasizes on the role of Knowledge management as an enabler of E-Working paradigm. The four main circles of knowledge in e-Work related are: ‘‘e-Work”, ‘‘Integration Coordination and Collaboration”, ‘‘Distributed Decision Support” and ‘‘Active Middleware”. It has been generally recognized that computer and communication science and... 

With the advent of the globalization paradigm, the industrial interactions among manufacturing companies have become easier, and the possibility of sharing of the resources among them has been introduced. This issue, coupled with the increasing diversity of customer needs, has led to a change in business models of manufacturing industries and because of that, in the field of globalized manufacturing, a new paradigm called cloud manufacturing has been proposed in which service-orientation is one of the main features. Despite of the extensive studies on cloud manufacturing, the lack of a framework that, based on the service-orientation, determines the improving of manufacturing processes to...