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Optimal energy management system of IoT-Enabled large building considering electric vehicle scheduling, distributed resources, and demand response schemes
, Article Sensors ; Volume 22, Issue 19 , 2022 ; 14248220 (ISSN) ; Shahzad, M ; Abbas, F ; Muqeet, H. A ; Hussain, M. M ; Bin, L ; Sharif University of Technology
MDPI
2022
Abstract
In the energy system, various sources are used to fulfill the energy demand of large buildings. The energy management of large-scale buildings is very important. The proposed system comprises solar PVs, energy storage systems, and electric vehicles. Demand response (DR) schemes are considered in various studies, but the analysis of the impact of dynamic DR on operational cost has been ignored. So, in this paper, renewable energy resources and storages are integrated considering the demand response strategies such as real-time pricing (RTP), critical peak pricing (CPP), and time of use (ToU). The proposed system is mapped in a linear model and simulated in MATLAB using linear programming...
BOT-MICS: Bounding time using analytics in mixed-criticality systems
, Article IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems ; Volume 41, Issue 10 , 2022 , Pages 3239-3251 ; 02780070 (ISSN) ; Hosseinghorban, A ; Sahoo, S. S ; Ejlali, A ; Kumar, A ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
An increasing trend for reducing cost, space, and weight leads to modern embedded systems that execute multiple tasks with different criticality levels on a common hardware platform while guaranteeing a safe operation. In such mixed-criticality (MC) systems, multiple worst case execution times (WCETs) are defined for each task, corresponding to the system operation mode to improve the MC system's timing behavior at runtime. Determining the appropriate WCETs for lower criticality (LC) modes is nontrivial. On the one hand, considering a very low WCET for tasks can improve the processor utilization by scheduling more tasks in that mode, on the other hand, using a larger WCET ensures that the...
HFOS L : hyper scale fast optical switch-based data center network with L-level sub-network
, Article Telecommunication Systems ; Volume 80, Issue 3 , 2022 , Pages 397-411 ; 10184864 (ISSN) ; Hessabi, S ; Koohi, S ; Yan, F ; Calabretta, N ; Sharif University of Technology
Springer
2022
Abstract
The ever-expanding growth of internet traffic enforces deployment of massive Data Center Networks (DCNs) supporting high performance communications. Optical switching is being studied as a promising approach to fulfill the surging requirements of large scale data centers. The tree-based optical topology limits the scalability of the interconnected network due to the limitations in the port count of optical switches and the lack of optical buffers. Alternatively, buffer-less Fast Optical Switch (FOS) was proposed to realize the nanosecond switching of optical DCNs. Although FOSs provide nanosecond optical switching, they still suffer from port count limitations to scale the DCN. To address...
Integrated analysis of energy-pollution-health nexus for sustainable energy planning
, Article Journal of Cleaner Production ; Volume 356 , 2022 ; 09596526 (ISSN) ; Alizadeh, S ; Avami, A ; Kianbakhsh, A ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
In recent years, the emission of various pollutants has caused many problems for human life and the ecosystem. The prioritization between different air pollution control scenarios is a challenge between scientists and policy-makers. This study develops an integrated method for sustainable energy planning considering the energy-pollution-health nexus. The paper investigates three main pollutants (i.e., PM2.5, SO2, and NOx) of different emission sources (i.e., industrial, residential, and intra-city and suburban transportations) in twelve scenarios. The American Meteorological Society/Environmental Protection Agency Regulatory Model (AERMOD) is applied to model the air pollution dispersion,...
A systematic review of fall risk factors in stroke survivors: towards improved assessment platforms and protocols
, Article Frontiers in Bioengineering and Biotechnology ; Volume 10 , 2022 ; 22964185 (ISSN) ; Whitton, N ; Zand, R ; Dombovy, M ; Parnianpour, M ; Khalaf, K ; Rashedi, E ; Sharif University of Technology
Frontiers Media S.A
2022
Abstract
Background/Purpose: To prevent falling, a common incident with debilitating health consequences among stroke survivors, it is important to identify significant fall risk factors (FRFs) towards developing and implementing predictive and preventive strategies and guidelines. This review provides a systematic approach for identifying the relevant FRFs and shedding light on future directions of research. Methods: A systematic search was conducted in 5 popular research databases. Studies investigating the FRFs in the stroke community were evaluated to identify the commonality and trend of FRFs in the relevant literature. Results: twenty-seven relevant articles were reviewed and analyzed spanning...
Fungal bioleaching of e-waste utilizing molasses as the carbon source in a bubble column bioreactor
, Article Journal of Environmental Management ; Volume 307 , 2022 ; 03014797 (ISSN) ; Arshadi, M ; Yaghmaei, S ; Sharif University of Technology
Academic Press
2022
Abstract
Mobile phones are known as the most widely used electronic instruments, and an enormous number of discarded mobile phones are generated. The present work used a pure culture of Penicillium simplicissimum in a bubble column bioreactor to extract Cu and Ni from mobile phone printed circuit boards (MPPCBs) waste. Molasses was used as an efficient carbon source to enhance bioleaching efficiency and increase the cost benefits. The adaptation phase was done at Erlenmeyer flasks to reach 40 g/L of MPPCBs powder. The most significant parameters, including the mass of MPPCBs powder, aeration, molasses concentration, and their interaction, were optimized in order to leach the maximum possible Cu and...
Policy Instruments for the Improvement of Customers’ Willingness to Purchase Electric Vehicles: A Case Study in Iran
, Article Energies ; Volume 15, Issue 12 , 2022 ; 19961073 (ISSN) ; Mirzamohammadi, S ; Naeini, A. B ; Maleki, A ; Mobayen, S ; Skruch, P ; Sharif University of Technology
MDPI
2022
Abstract
Given the various advantages of electric vehicles compared to conventional gasoline vehicles in terms of energy efficiency and environmental pollution (among others), this paper studies the factors affecting customers’ willingness to purchase electric vehicles. An integrated discrete choice and agent-based approach is applied to model the customers’ choice for the valuation of electric vehicles based on the internal reference price. The agent-based model evaluates customers’ preferences for a number of personal and vehicle attributes, according to which vehicle they chose. Data from 376 respondents are collected to estimate a random-parameter logit model where customers are asked to reveal...
Seismic damage and life cycle cost assessment of unanchored brick masonry veneers
, Article Engineering Structures ; Volume 260 , 2022 ; 01410296 (ISSN) ; Ghahremani Baghmisheh, A ; Estekanchi, H. E ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
This paper develops the seismic damage models of brick masonry veneer attached to the masonry infill without metal ties and assesses the life cycle cost of veneers subjected to earthquake excitation. Even though anchoring veneers to the backup wall has been prescribed in recent building codes, most of the existing brick veneers in seismic prone areas around the world lack the anchoring details. Besides, the damage and consequence models of masonry façades have not been presented in the FEMA-P58 database restricting detailed performance evaluation of buildings with unanchored masonry veneers. This study develops detailed finite element models to simulate various failure modes of the masonry...
Exergy cost analysis of soil-plant system
, Article International Journal of Exergy ; Volume 38, Issue 3 , 2022 , Pages 293-319 ; 17428297 (ISSN) ; Saboohi, Y ; Valero, A ; Azamian, S ; Sharif University of Technology
Inderscience Publishers
2022
Abstract
In this paper, inspired by a gas turbine power plant, the interaction between plant-soil processes has been simulated. It is aimed to indicate that solar energy in the photosynthesis process is equivalent to the fuel in combustion chambers. In the glucose production process, when solar exergy is considered as a fuel, 99.4% of total exergy cost is supplied by solar exergy and only 0.6% of the exergy cost is provided by nutrients’ content. In general, 30% of the total exergy entering the Calvin cycle is consumed in glucose production and the remaining 70% is related to biomass generation (as flue gas in the gas turbine). Moreover, 98% of the total exergy cost of the soil box is related to...
Attitude and deformation coupled estimation of flexible satellite using low-cost sensors
, Article Advances in Space Research ; Volume 69, Issue 1 , 2022 , Pages 677-689 ; 02731177 (ISSN) ; Assadian, N ; Varatharajoo, R ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
Solar panel flexibility plays an important role in the attitude control of satellites. Therefore, traditionally the deformations of flexible solar panels are measured with a series of sensors along the panels itself. This paper presents a novel maiden attempt to simultaneously estimate the attitude and deformation of a flexible satellite using only 2 low-cost attitude sensors namely the sun sensor and magnetometer measurements. The flexible satellite is considered as a central rigid body with two attached flexible panels in order to derive the governing dynamic equations based on the Lagrange's equation. Both Extended Kalman filter (EKF) and Unscented Kalman Filter (UKF) are employed for the...
Multi-objective economic-statistical design of simple linear profiles using a combination of NSGA-II, RSM, and TOPSIS
, Article Communications in Statistics: Simulation and Computation ; Volume 51, Issue 4 , 2022 , Pages 1704-1720 ; 03610918 (ISSN) ; Ershadi, M. J ; Niaki, S. T. A ; Sharif University of Technology
Taylor and Francis Ltd
2022
Abstract
A multi-objective economic-statistical design is aimed in this article for simple linear profiles. In this design, the interval between two successive sampling intervals, the sample size and the number of adjustment points alongside, the parameters of the monitoring scheme are determined such that not only the implementation cost is minimized, but also the profile exhibits desired statistical performances. To this aim, three objective functions are considered in the multi-objective optimization model of the problem. The Lorenzen–Vance cost function is used to model the implementation cost as the first objective function to be minimized. The second objective function maximizes the in-control...
Solar-hydrogen renewable supply system optimisation based on demand side management
, Article International Journal of Ambient Energy ; Volume 43, Issue 1 , 2022 , Pages 754-763 ; 01430750 (ISSN) ; Jafarinejad, T ; Badpar, F ; Sharif University of Technology
Taylor and Francis Ltd
2022
Abstract
Stand-alone hybrid power systems are an alternative to main electricity grids, where the grid extension is costly or the trifling local consumption would not justify its expansion. However, lack of consistency and uniformity in renewable energy sources, and the restrictions of energy storage systems make system sizing a challenging task. Optimum size of a stand-alone system depends on several factors including energy demand function. In this paper, different types of demand functions are addressed for optimising a solar-hydrogen supply system. Different parameters are defined to investigate the impact of household population on the power generation cost, and also to determine the optimum...
Performance optimization of the helical heat exchanger with turbulator
, Article Frontiers in Energy Research ; Volume 9 , 2022 ; 2296598X (ISSN) ; Xiaoluan, Z ; Mahariq, I ; Salem, M ; Ghalandari, M ; Ghadak, F ; Abedini, M ; Sharif University of Technology
Frontiers Media S.A
2022
Abstract
In this paper, optimization on a two-tube helical heat exchanger with a fin is represented. The spiral pipes heat exchanger which is made of the cooper is adopted for investigation. The effects of three types of fins with the proposed geometric shapes on the overall heat transfer coefficient and pressure loss are investigated. The fins are located on the inner surface of the outer pipe. The obtained numerical results are compared with the experimental results, and a good agreement is observed between the results. The studies show that the total heat transfer coefficient has increased by 170% compared to an exchanger with no fin. Therefore, the best fin has been selected based on the...
Network and application-aware cloud service selection in peer-assisted environments
, Article IEEE Transactions on Cloud Computing ; Volume 9, Issue 1 , 2021 , Pages 258-271 ; 21687161 (ISSN) ; Malekimajd, M ; Movaghar, A ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2021
Abstract
There are a vast number of cloud service providers, which offer virtual machines (VMs) with different configurations. From the companies perspective, an appropriate selection of VMs is an important issue, as the proper service selection leads to improved productivity, higher efficiency, and lower cost. An effective service selection cannot be done without a systematic approach due to the modularity of requests, the conflicts between requirements, and the impact of network parameters. In this paper, we introduce an innovative framework, called PCA, to solve service selection problem in the hybrid environment of peer-assisted, public, and private clouds. PCA detects the conflicts between the...
Comparison of mechanical properties in interference screw fixation technique and organic anterior cruciate ligament reconstruction method: a biomechanical study
, Article BMC Musculoskeletal Disorders ; Volume 22, Issue 1 , 2021 ; 14712474 (ISSN) ; Nourani, A ; Moeinnia, H ; Mohseni, M ; Korani, H ; Ghias, N ; Chizari, M ; Sharif University of Technology
BioMed Central Ltd
2021
Abstract
Background: Bone and Site Hold Tendon Inside (BASHTI) technique is an organic implant-less technique for anterior cruciate ligament (ACL) reconstruction with some clinical advantages, such as speeding up the healing process, over implantable techniques. The study aims to compare the mechanical properties of BASHTI technique with the conventional interference screw technique. Methods: To investigate the mechanical properties, 20 in-vitro experimental tests were conducted. Synthetic dummy bone, along with fresh digital bovine tendons, as a graft, were used for experiments. Three loading steps were applied to all specimens, including a preconditioning, a main cyclic, and a pull-out loading....
Electrochemical prostate-specific antigen biosensors based on electroconductive nanomaterials and polymers
, Article Clinica Chimica Acta ; Volume 516 , 2021 , Pages 111-135 ; 00098981 (ISSN) ; Abdekhodaie, M. J ; Sharif University of Technology
Elsevier B.V
2021
Abstract
Prostate cancer (PCa), the second most malignant neoplasm in men, is also the fifth leading cause of cancer-related deaths in men globally. Unfortunately, this malignancy remains largely asymptomatic until late-stage emergence when treatment is limited due to the lack of effective metastatic PCa therapeutics. Due to these limitations, early PCa detection through prostate-specific antigen (PSA) screening has become increasingly important, resulting in a more than 50% decrease in mortality. Conventional assays for PSA detection, such as enzyme-linked immunosorbent assay (ELISA), are labor intensive, relatively expensive, operator-dependent and do not provide adequate sensitivity....
Time series analysis framework for forecasting the construction labor costs
, Article KSCE Journal of Civil Engineering ; Volume 25, Issue 8 , 2021 , Pages 2809-2823 ; 12267988 (ISSN) ; Gholipour, Y ; Kashani, H ; Sharif University of Technology
Springer Verlag
2021
Abstract
This manuscript presents a framework to develop vector error correction (VEC) models applicable to forecasting the short- and long-run movements of the average hourly earnings of construction labor, which is an essential predictor of the construction labor costs. These models characterize the relationship between average hourly earnings and a set of explanatory variables. The framework is applied to develop VEC forecasting models for the average hourly earnings of construction labor in the USA based on the identified variables that govern its movements, such as Global Energy Price Index, Gross Domestic Product, and Personal Consumption Expenditures. More than 150 candidate VEC models were...
BIM-based approach to conduct Life Cycle Cost Analysis of resilient buildings at the conceptual stage
, Article Automation in Construction ; Volume 123 , 2021 ; 09265805 (ISSN) ; Jalaei, F ; Golpour, A ; Hosseini Varzande, S. S ; Guest, G ; Sharif University of Technology
Elsevier B.V
2021
Abstract
All costs within the life cycle of a building are known as its life cycle cost (LCC). In the design process of a building, the use of a lower initial cost index to select an option among others with similar performance may not lead to an economically optimal alternative during the life cycle. Hence, today, building designers and investors require a tool to estimate life cycle cost at the conceptual design stage to select an economically efficient option. Resilient solutions generally lead to a higher level of complexity and upfront costs and carry additional embodied environmental impact as well. This study aims to support the design of resilient buildings using a sound LCC methodology in...
BOT-MICS: Bounding time using analytics in mixed-criticality systems
, Article IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems ; 2021 ; 02780070 (ISSN) ; Hosseinghorban, A ; Sahoo, S. S ; Ejlali, A ; Kumar, A ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2021
Abstract
An increasing trend for reducing cost, space, and weight leads to modern embedded systems that execute multiple tasks with different criticality levels on a common hardware platform while guaranteeing a safe operation. In such Mixed-Criticality (MC) systems, multiple Worst-Case Execution Times (WCETs) are defined for each task, corresponding to system operation mode to improve the MC system’s timing behavior at run-time. Determining the appropriate WCETs for lower criticality modes is non-trivial. On the one hand, considering a very low WCET for tasks can improve the processor utilization by scheduling more tasks in that mode, on the other hand, using a larger WCET ensures that the mode...
A new pre-concentration scheme for brine treatment of MED-MVC desalination plants towards low-liquid discharge (LLD) with multiple self-superheating
, Article Energy ; Volume 225 , 2021 ; 03605442 (ISSN) ; Sharif University of Technology
Elsevier Ltd
2021
Abstract
Multi-effect distillation units discard brine at high volume to the environment which results in numerous environmental pollutions, low thermodynamic performance, high exergy destruction rate, and high unit cost for the fresh water. This study aims at introducing a new method of pre-treatment for the brine discarded from each stage of the desalination plant to increase its concentration. The new method per-concentrates the brine by superheating the steam produced in the previous stage via recovering valuable thermal heat of the same effect. Due to a low temperature difference between the heat sink and heat source of this self-superheating scheme (i.e., the temperature difference between the...