Sharif Digital Repository

The airport terminal is difficult to plan and design due to the different components and the intricate complexity of its parts. At the airport terminal, we face a queue system which simulation is always a good way to analyze. In addition, computer simulation using modern softwares with the capability to model different types of systems, including the airport terminal, while being less realistic than analytical models, is less costly than operational Exercise.In this study, a supportive approach for better and specific management of Iranian airport terminal buildings with discrete-event simulation is proposed, considering the need for managing the airport terminals building in the country and... 

Limited water resources in Iran have made dams an important part of the country’s infrastructure. As a result of the large number of in-progress and expected dam projects in the country, consideration of sustainability factors during planning, construction and operation phases of dam projects can create significant economical, social and environmental impacts in the long term. To come up with an inclusive sustainable development, new sustainability assessment approaches seek for sustainable development at the entire project’s life-cycle; they are looking for sustainable development at all design, construction, operation, maintenance and even demolition phases. In this research we have... 

Dealing with complicated organizational situations in the current competitive and uncertain market requires making the best management decisions at the earliest time possible. As making the best decisions requires the possession of adequate and accurate knowledge, knowledge has become the most valuable asset of organizations. Knowledge Management (KM) spans managing the identification, capture, storage, sharing, usage and creation of knowledge. Using an appropriate Knowledge Management System (KMS) can ensure the provision of essential knowledge for decision making, and can manage the complexity of the competitive market by maintaining and managing the relevant organizational knowledge.... 

Design and parametric study of a coupled thermoacoustic refrigerator system has been carried out based on thermoacoustic theories. The purpose of coupled thermoacoustic refrigerator design is to cool a container with small dimensions for use in cold storage above zero. The application of this refrigerator is where the waste heat of piston engines of distributed generation (DG) plants can be used as energy input. The design is based on the simplicity and low cost of the refrigerator. Therefore, the engine and refrigerator part of the coupled thermoacoustic refrigerator is enclosed in a resonator with a fixed diameter, which is closed on both sides of the resonator. Two standing-wave... 

In today’s methodical corporate world, processes have been recognized as valuable organizational knowledge assets. Situational Method Engineering (SME) processes are considered particularly valuable because of their effectiveness in building context-specific software processes for developing efficient software systems; thus, they indirectly affect all software-dependent organizational knowledge assets, including organizational processes. It is therefore logical to deduce that managing SME knowledge would improve the efficiency of both SME and organizational processes. Unfortunately, existing SME processes suffer from weaknesses that are rooted in loss of knowledge within method engineering... 

People's lives have been affected by the spread of the Covid-19 virus. Due to the high infectivity, governments have screened people, imposed curfews, mandated the use of masks, and so on to reduce the rate of transmission of the disease among people. Meanwhile, infected people are getting treatments: people who are slightly affected are quarantined at home, and those who are heavily affected are treated in hospitals. Hence there is an excessive increase in the hospital workload. On the one hand, this increased workload leads to physical fatigue and, on the other hand, to psychological problems, stress, etc. for the healthcare professionals. Therefore, it is very important to take care of... 

Destruction of green lands, especially forests, is one of the most common forms of environmental degradation. Meanwhile, political institutions can play an important role in protecting or destroying the environment, especially forests. The creation of town and village councils as a change in political institutions and decentralization can have an impact on the environment. Land use change, implementation of development projects and the task of overseeing the implementation of environmental protection laws are among the duties and powers of councils that affect the coverage of various areas. At different eras, town and village councils’ elections have been annulled or dissolved in a... 

The exploration of bipedal robot locomotion is primarily motivated by a variety of sociological and commercial imperatives, such as the aspiration to substitute humans in hazardous occupations (e.g., mining, nuclear power plant inspections, military operations) and advancements in dynamic control for purposes like rehabilitation with robotic assistance and nerve stimulation. The complexity arising from a high number of degrees of freedom, intricate nonlinear dynamics, and persistent challenges in modeling ground interactions pose significant obstacles in the development of control strategies for bipedal systems. With the increasing integration of robots into diverse sectors like education... 

The aim of this study is to design a Zero Liquid Discharge (ZLD) treatment plant for mine effluent. For this purpose, wastewater from an iron ore mine was selected as a case study. Initially, recent studies on ZLD systems were reviewed, and a technically feasible process was designed to treat mine effluent with a ZLD approach. The designed process was then simulated using Aspen Plus software, and the results were utilized for an economic analysis. The simulation was performed under three design scenarios: (1) using external steam for energy supply, (2) utilizing waste heat, and (3) employing a steam compressor to superheat the saturated steam exiting the evaporative crystallizer and using...