Sharif Digital Repository

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... 

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... 

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... 

Greenhouse gases have a large share in pollution and global warming, and carbon dioxide is the main component of more than 80% of greenhouse gas emissions. For this reason, governments are looking for policies at the national and international level to reduce carbon emissions. In this research, using the system dynamics approach, a comprehensive model of the relationship between society, economy and carbon emissions in Iran has been designed. System dynamics is a method to study complex systems, which is used in this research because of the interactions between different parts of society, economy and carbon emissions and to better understand the relationship between them. First, the model is... 

In mass casualty incidents such as earthquakes, hospitals and emergency response systems face significant challenges. To manage this critical situation, transfer points have been introduced as a strategic solution, enhancing the speed and efficiency of casualty transfers, thereby improving the overall performance of hospital services. The aim of this study is to develop a discrete-event simulation model that simulates and evaluates the provision of services to casualties at transfer points while predicting the optimal number of resources needed, including ambulances, triage staff, and medical personnel, in various emergency conditions. Additionally, a location model is designed to optimally... 

Detecting defects in financial statements is crucial because such defects can impact the transparency, accuracy, and reliability of financial reports and influence the decision-making of stakeholders. This study aims to provide a novel approach for identifying defects in the financial statements of companies listed on the Tehran Stock Exchange. In this research, a defect is defined as a difference in data items between audited and unaudited financial statements, which may indicate either unintentional or intentional deviations or signal a potential fraud. The data for this study was automatically collected from the Codal system and includes both audited and unaudited financial reports in the... 

Today, knowledge is the most important resource in software development. The success of software development relies on the exchange of knowledge between software developers working in different agile teams. The purpose of this research is to determine the size of agile teams according to knowledge sharing factors. Knowledge sharing factors between work teams have been extracted by searching articles; Then, all these factors, which are classified into five main categories: individual, organizational, technological, cultural, and geographical, were investigated and separated according to the working conditions in Iran, and finally, the important factors were identified by the evaluation of... 

Organizations increasingly prioritize and utilize their intangible assets in a combined manner to achieve sustainable competitive advantage and success in a volatile market environment. In this research, the most important intangible assets of organizations have been identified. Using the Generalized Method of Moments, a suitable regression method for the statistical analysis of panel data, the impact of intangible assets on organizational profitability—specifically the return on assets—is examined separately and simultaneously across manufacturing and service industries. These assets include innovation, employee engagement, and customer satisfaction. The population of this study consists of... 

In recent years with the growth and development of emerging technologies, one of the main challenges in various organizations is the issue of Business-IT Alignment programs at different levels of strategic, tactical, and operational. Many managers and experts in the field of information technology recognize the importance of this issue because of its broad effects on the development and maturity of the organization. However, they face various difficulties in creating actionable plans to achieve high levels of alignment. The main problem is the inability to measure the alignment degree index. This index is affected by various sub-indicators in various fields of business and information... 

The process of portfolio construction and optimization can be broken down into three main steps: selecting appropriate assets, allocating capital, and monitoring and adjusting the portfolio. This study focuses on evaluating the performance of the Hierarchical Risk Parity (HRP) method for capital allocation in investment portfolios, specifically in Iran’s capital market. The aim is to enhance the method's effectiveness by implementing alternative correlation calculation approaches, such as Wavelet and Chatterjee correlations. The study utilizes three different portfolios containing assets from the Tehran Stock Exchange, the US stock market, and the cryptocurrency market. The primary objective... 

Today, with the popularity of online shopping, many business owners are interested in launching online stores. Recording opinions and using the opinions of customers and buyers of products provides the possibility of listening to the opinions of customers in the design and improvement of products. On the other hand, other users and those who intend to buy a specific product, after paying attention to the features and aspects of the product they want, refer to the section of customer views and opinions. The user also reads these comments among thousands of different sentences and words written with different opinions and suggests; It gets confusing and many users won't be able to make the... 

Studies have shown that by reducing the stiffness of structures the seismic load imposed on them is reduced. In this research the effect of two different precast connections on the seismic response of precast concrete structures with shear walls during earthquakes was studied. The connections were vertical connections and were used to connect the two halves of the shear walls together. The results were compared with that of a wet connection. In this research 46 different structures were analyzed. The buildings were 9, 6 and 3 stories. In order to obtain the best seismic behavior different combinations of steel were considered among the connections. The seismic behavior of the structures were... 

People usually use trust and reputation when they encounter uncertainty in the nature. Graphs are good tools to model and analysis of trust’s problems. If we show human and computer agents by graph’s nodes and trust values by its edges, in literature, the output graph is so-called Web of Trust. Most recently, there are three major research areas in which trust is studied. First area is policy-based trust which uses policies, digital signature and authentication methods. Second area is reputation-based trust which uses reputation and social network tools to estimate trust where past interactions or performance for an entity are combined to assess its future behavior. Third area is trust... 

Peer-to-Peer networks are invented to enable participants (peers) to share their resources and find and use the shared resources of the others. So the main issue is the mechanism of finding granted resources of the other peers. In Peer-to-Peer networks, there is no central server to index shared resources of the peers. So peers should collaborate to provide a fully distributed mechanism for searching resources. Considering the huge size of peer-to-peer systems, it is apparent that efficiency of the search mechanism is very critical. In this thesis, to have efficient seach in Peer-to-Peer networks, we propose two approaches. Then based on these approaches, we propose the third approach to... 

With significant advances in software development technologies in recent years, it is possible to have complex software applications, wich include large number of heterogeneous software components distributed over a large network of computers with different computational capabilities. To run such applications, their components must be instantiated on proper hardware resources in their target environments so that all requirements and constraints are met and some quality of service parametesrs (e.g.,reliability, load balancing, etc) are also optimized. This process is called software deployment. For large, distributed ,component-based applications¬ with many constraints and requirements, it ... 

Today, peer to peer networks have become quite popular due to their ability to easy access to shared resources regardless of their location in World. In these systems files are stored at the end user machines which named peer, rather than at a central server, in contrast to the traditional client-server systems, files are transferred directly between peers. sending and receiving those data, occupy a large amount of the internet bandwidth. So, by improving the efficiency of these networks, the total efficiency of the internet will improved. These systems are usually constructed on the other networks such as TCP/IP as an underlay or physical networks. Despite of structure of peer to peer...