Sharif Digital Repository

Nowadays, separate use of traditional service management frameworks and approaches will not meet the needs of businesses and customers. This is because of the very fast change in the environment and the move to the digital age. The integration of traditional approaches into modern ones significantly helps organizations adapt to new needs and changes in the environment. In this research, first, the basic concepts of the ITIL framework as the most widely used IT services management framework have been studied. Then, the COBIT framework as the most accepted IT governance framework has been investigated. The VeriSM approach also has been used as a solution for service management in the digital... 

Nowadays, due to the enlargement and complexity of software systems, traditional approaches to software development are not as efficient as before, hence there is a need for new approaches in design, implementation, and maintenance of software systems and processes. Complexity and enlargement of design and initial implementation of systems and processes on one hand, and the requirements appear in the maintenance phase on the other hand, makes the dynamic design of systems and processes a very important issue. However, adding dynamism and changeability to the systems has an upper bound, and additionally, it is impossible to definitely predict trend of systems and processes in the future. This... 

In this research, we study one of the challenges in the field of software engineering, namely the detection of diplicate questions in Stackoverflow, the Q&A community of programmers. The works done in this area has problems such as complexity and reduced performance over time. The proposed solution is based on machine learning and modern representation learning methods. Representation is done with two approaches, domain specific learning and transfer learning. Fasttext and GloVe, the two word embeddings used in domain specific learning, and in transfer learning, the embedding of the universal sentence encoder has been used. Support vector machine and multilayer perceptron used as... 

Nowadays, separate use of traditional service management frameworks and approaches will not meet the needs of businesses and customers. This is because of the very fast change in the environment and the move to the digital age. The integration of traditional approaches into modern ones significantly helps organizations adapt to new needs and changes in the environment. In this research, first, the basic concepts of the ITIL framework as the most widely used IT services management framework have been studied. Then, the COBIT framework as the most accepted IT governance framework has been investigated. The VeriSM approach also has been used as a solution for service management in the digital... 

Open-source online social networks for project sharing and online social networks Q&A make use of tags and keywords for indexing, classification, and thematic search. users are responsible for selecting tags to identify their content, which can lead to human errors, or malicious users with improper tagging can lead to information corruption. Uncontrolled use of words also leads to the production of different types of tags, leading to redundancy or ambiguity. The most obvious advantage of tagging is the correct classification of information, which provides better services for relevant searches and requests. In this study, we propose a new model called TagBERT, which for the first time uses... 

A large number of desalination plants have been established to overcome the drinkable water scarcity in the world. These plants produce saline water as effluent, which is often discharged into local sea water. One of the applicable methods to dispose these kinds of effluents is to install an inclined nozzle below the water’s surface. Hence, an inclined negatively buoyant jet (INBJ) forms which is often fully turbulent due to the high discharge velocity. Local environmental characteristics affect the dynamics and mixing behavior of INBJs. One of these characteristics is the sea bed slope, on which the present study has been focused. Large eddy simulations (LES) are performed in the present... 

The project schedule is used as a key tool for managers to measure the progress of the project and prevent the deviation of the project from achieving its goals.Project scheduling started with manual methods. After a while, due to the increase in the size of projects and their complexity, the efficiency of traditional methods decreased. After the advances in computer sciences, scientists and experts had moved towards intelligentization and automation.During the past three decades, despite the attention of both academic and industrial fields towards automatic planning and scheduling of projects, Most of the researches focused on construction projects, and unfortunately, a few attentions have... 

Supply chain management aims to increase customer satisfaction and satisfy demand with the lowest cost by establishing coordination and cooperation among the chain members. However, considerable concerns along supply chain management are reported from both academicians and practitioners. Security, visibility, transparency and traceability are the main challenges confronting supply chain management. The emerging technology named Blockchain is able to address the mentioned challenges by integrating with supply chain management. A prominent point to consider is that whether it is absolutely necessary to adopt blockchain technology in a system or not. If yes, how blockchain should be implemented... 

The breadth and intertwining of the concepts of the Scrum Agile framework has made it difficult to understand the details in relation to each other correctly and quickly, and has faced learning Scrum with a challenge; because the newbies have to choose between schematic and imprecise but general images showing connections and detailed and precise but unstructured texts. On the other hand, the different approaches of Scrum implementation in different organizations according to the different conditions of the organizations and the specific ideas of each organization to personalize Scrum in the places that Scrum has given them this permission, have made the Scrum teams willing to learn as much... 

Manual code review, essential for software quality, suffers from time constraints and repetitive tasks. This thesis investigates using large language models (LLMs) with prompt engineering and in-context learning to automate aspects of the process. By leveraging an LLM's generalization capabilities, we aim to achieve automation with limited resources and minimal pre-training. Due to the development of large language models and in-context learning capabilities, our proposed approach is to add contextual information relevant to code review to the model input. Our approach focuses on providing context-specific samples and documents related to the reviewed code, enabling the LLM to learn from the... 

Today, the digital transformation has increasingly confronted software development companies with numerous requests for the production of custom software. Over time, these companies have realized that paying attention only to the technical aspect is not enough for delivering a product that functions correctly; the social dimension must also be considered. Consequently, many agile software development methods have been developed. However, an important point to note is that implementing and maintaining these methods involves many intricacies, with the most significant being the management of interpersonal relationships. With the continuous expansion of technology and the advancement of... 

Nowadays, the capital market has a significant impact on the economy of a country and causes economic dynamism and growth in gross production. Among the important phenomena in the stock market is stock pricing, the correctness or incorrectness of which has a significant role in the performance of the stock market and the value of companies. The stock price in the stock exchange represents the stock market value and usually represents the investment value of the shareholders. Forecasting the trend of the stock market is considered an important and necessary thing and has been given much attention, because the successful forecasting of the stock price may lead to attractive profits by making... 

In the cloud computing environment, although many processing resources for application software with the volume of calculations The above is available, but it may not work for software that is sensitive to latency. In fact, due to the large distance between users and end devices to cloud servers, sending requests And the required data to the data centers requires a high bandwidth and therefore the data transfer time is also significant. In addition, cloud computing in platforms such as cloud-based IoT architecture faces other challenges such as connectivity, resource limitations of end devices, and security. In order to solve the challenges in the cloud computing environment and respond to... 

The aim of this research is to develop and implement a deep reinforcement learning algorithm for portfolio management in the Tehran stock market, which is considered an emerging market with distinct patterns compared to the stock markets of developed countries. In this study, in addition to the market price data extensively used in previous research, we leverage fundamental ratio data extracted from company financial reports, which have received less attention. Furthermore, the research scope is limited to stocks in the mining and metal industries to enable the utilization of specific industry features, such as susceptibility to global prices of a key commodity. The portfolio management... 

IEEE802.16 protocol is being developed and 802.16 modems will be used in every house to connect to the Internet through base-stations in both urban and rural areas. Since user bandwidth for connection to the Internet is limited, a large fraction of each modem’s bandwidth is not used. In this thesis, we propose an architecture to make a PPMN (Public Peer-to-peer Mesh Network) of all users in a city. Users can be wired or wireless under any authority. They have to forward intra-city traffic themselves. As a result, it is not required to transfer intra-city traffic through BSs except for critical information. The architecture is composed of a routing algorithm, a forwarding incentive... 

Nowadays, research in the field of software architecture has become an important topic as a key element in software processes. Software Development Methodologies are not excluded. Importance and the need to improve and maintain methods, training new people and producing reasonable documents have highlighted the role of software architecture, especially in the methods that do not good predictions for these cases. In this project a solution would be introduced that we can extract the architecture of a methodology by using in hand techniques and tools. Then we would map the extracted architecture to architectural styles. So in addition of the benefit of using an architecture based design, we... 

Our surrounding environment has valuable information about our life. We live in technological societies where we are leaving digital footprints in, continuously. Growing development and popularity of mobile phones, has turned them into the most important global sensors. Mobile phone tracking via GPS points is one of the data types which can be collected from these sensors and used for traffic monitoring, intelligence traffic control and travel time estimation.
In order to use these devices, we need to collect data, detect transportation mode and estimate travel time. By evaluation of previous works, we can feel the need to a comprehensive approach for detecting transportation mode of...